Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1 | /* Compile an expression node to intermediate code */ |
| 2 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 3 | /* XXX TO DO: |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4 | XXX add __doc__ attribute == co_doc to code object attributes? |
| 5 | XXX (it's currently the first item of the co_const tuple) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 6 | XXX Generate simple jump for break/return outside 'try...finally' |
Jeremy Hylton | 3faa52e | 2001-02-01 22:48:12 +0000 | [diff] [blame] | 7 | XXX Allow 'continue' inside finally clause of try-finally |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 8 | XXX New opcode for loading the initial index for a for loop |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 9 | XXX other JAR tricks? |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 10 | */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 11 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 12 | #include "Python.h" |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 13 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 14 | #include "node.h" |
| 15 | #include "token.h" |
| 16 | #include "graminit.h" |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 17 | #include "compile.h" |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 18 | #include "symtable.h" |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 19 | #include "opcode.h" |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 20 | #include "structmember.h" |
| 21 | |
| 22 | #include <ctype.h> |
Guido van Rossum | 282914b | 1991-04-04 10:42:56 +0000 | [diff] [blame] | 23 | |
Guido van Rossum | b05a5c7 | 1997-05-07 17:46:13 +0000 | [diff] [blame] | 24 | /* Three symbols from graminit.h are also defined in Python.h, with |
| 25 | Py_ prefixes to their names. Python.h can't include graminit.h |
| 26 | (which defines too many confusing symbols), but we can check here |
| 27 | that they haven't changed (which is very unlikely, but possible). */ |
| 28 | #if Py_single_input != single_input |
Guido van Rossum | 2f75b29 | 1997-05-20 22:18:48 +0000 | [diff] [blame] | 29 | #error "single_input has changed -- update Py_single_input in Python.h" |
Guido van Rossum | b05a5c7 | 1997-05-07 17:46:13 +0000 | [diff] [blame] | 30 | #endif |
| 31 | #if Py_file_input != file_input |
Guido van Rossum | 2f75b29 | 1997-05-20 22:18:48 +0000 | [diff] [blame] | 32 | #error "file_input has changed -- update Py_file_input in Python.h" |
Guido van Rossum | b05a5c7 | 1997-05-07 17:46:13 +0000 | [diff] [blame] | 33 | #endif |
| 34 | #if Py_eval_input != eval_input |
Guido van Rossum | 2f75b29 | 1997-05-20 22:18:48 +0000 | [diff] [blame] | 35 | #error "eval_input has changed -- update Py_eval_input in Python.h" |
Guido van Rossum | b05a5c7 | 1997-05-07 17:46:13 +0000 | [diff] [blame] | 36 | #endif |
| 37 | |
Guido van Rossum | 8e793d9 | 1997-03-03 19:13:14 +0000 | [diff] [blame] | 38 | int Py_OptimizeFlag = 0; |
| 39 | |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 40 | #define OP_DELETE 0 |
| 41 | #define OP_ASSIGN 1 |
| 42 | #define OP_APPLY 2 |
| 43 | |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 44 | #define VAR_LOAD 0 |
| 45 | #define VAR_STORE 1 |
| 46 | #define VAR_DELETE 2 |
| 47 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 48 | #define DEL_CLOSURE_ERROR \ |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 49 | "can not delete variable '%.400s' referenced in nested scope" |
| 50 | |
| 51 | #define DUPLICATE_ARGUMENT \ |
| 52 | "duplicate argument '%s' in function definition" |
| 53 | |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 54 | #define GLOBAL_AFTER_ASSIGN \ |
| 55 | "name '%.400s' is assigned to before global declaration" |
| 56 | |
| 57 | #define GLOBAL_AFTER_USE \ |
| 58 | "name '%.400s' is used prior to global declaration" |
| 59 | |
Martin v. Löwis | dd7eb14 | 2003-10-18 22:05:25 +0000 | [diff] [blame] | 60 | #define PARAM_GLOBAL \ |
Neal Norwitz | 2a47c0f | 2002-01-29 00:53:41 +0000 | [diff] [blame] | 61 | "name '%.400s' is a function parameter and declared global" |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 62 | |
Jeremy Hylton | 39e2f3f | 2001-02-28 01:58:08 +0000 | [diff] [blame] | 63 | #define LATE_FUTURE \ |
| 64 | "from __future__ imports must occur at the beginning of the file" |
| 65 | |
Jeremy Hylton | 897b821 | 2001-03-23 14:08:38 +0000 | [diff] [blame] | 66 | #define ASSIGN_DEBUG \ |
| 67 | "can not assign to __debug__" |
| 68 | |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 69 | #define MANGLE_LEN 256 |
| 70 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 71 | #define OFF(x) offsetof(PyCodeObject, x) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 72 | |
Guido van Rossum | 6f79937 | 2001-09-20 20:46:19 +0000 | [diff] [blame] | 73 | static PyMemberDef code_memberlist[] = { |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 74 | {"co_argcount", T_INT, OFF(co_argcount), READONLY}, |
| 75 | {"co_nlocals", T_INT, OFF(co_nlocals), READONLY}, |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 76 | {"co_stacksize",T_INT, OFF(co_stacksize), READONLY}, |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 77 | {"co_flags", T_INT, OFF(co_flags), READONLY}, |
Guido van Rossum | 39d942d | 1992-01-12 02:30:05 +0000 | [diff] [blame] | 78 | {"co_code", T_OBJECT, OFF(co_code), READONLY}, |
| 79 | {"co_consts", T_OBJECT, OFF(co_consts), READONLY}, |
| 80 | {"co_names", T_OBJECT, OFF(co_names), READONLY}, |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 81 | {"co_varnames", T_OBJECT, OFF(co_varnames), READONLY}, |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 82 | {"co_freevars", T_OBJECT, OFF(co_freevars), READONLY}, |
| 83 | {"co_cellvars", T_OBJECT, OFF(co_cellvars), READONLY}, |
Guido van Rossum | 39d942d | 1992-01-12 02:30:05 +0000 | [diff] [blame] | 84 | {"co_filename", T_OBJECT, OFF(co_filename), READONLY}, |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 85 | {"co_name", T_OBJECT, OFF(co_name), READONLY}, |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 86 | {"co_firstlineno", T_INT, OFF(co_firstlineno), READONLY}, |
| 87 | {"co_lnotab", T_OBJECT, OFF(co_lnotab), READONLY}, |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 88 | {NULL} /* Sentinel */ |
| 89 | }; |
| 90 | |
Michael W. Hudson | 6093462 | 2004-08-12 17:56:29 +0000 | [diff] [blame] | 91 | /* Helper for code_new: return a shallow copy of a tuple that is |
| 92 | guaranteed to contain exact strings, by converting string subclasses |
| 93 | to exact strings and complaining if a non-string is found. */ |
| 94 | static PyObject* |
| 95 | validate_and_copy_tuple(PyObject *tup) |
| 96 | { |
| 97 | PyObject *newtuple; |
| 98 | PyObject *item; |
| 99 | int i, len; |
| 100 | |
| 101 | len = PyTuple_GET_SIZE(tup); |
| 102 | newtuple = PyTuple_New(len); |
| 103 | if (newtuple == NULL) |
| 104 | return NULL; |
| 105 | |
| 106 | for (i = 0; i < len; i++) { |
| 107 | item = PyTuple_GET_ITEM(tup, i); |
| 108 | if (PyString_CheckExact(item)) { |
| 109 | Py_INCREF(item); |
| 110 | } |
| 111 | else if (!PyString_Check(item)) { |
| 112 | PyErr_Format( |
| 113 | PyExc_TypeError, |
| 114 | "name tuples must contain only " |
| 115 | "strings, not '%.500s'", |
| 116 | item->ob_type->tp_name); |
| 117 | Py_DECREF(newtuple); |
| 118 | return NULL; |
| 119 | } |
| 120 | else { |
| 121 | item = PyString_FromStringAndSize( |
| 122 | PyString_AS_STRING(item), |
| 123 | PyString_GET_SIZE(item)); |
| 124 | if (item == NULL) { |
| 125 | Py_DECREF(newtuple); |
| 126 | return NULL; |
| 127 | } |
| 128 | } |
| 129 | PyTuple_SET_ITEM(newtuple, i, item); |
| 130 | } |
| 131 | |
| 132 | return newtuple; |
| 133 | } |
| 134 | |
Guido van Rossum | bea18cc | 2002-06-14 20:41:17 +0000 | [diff] [blame] | 135 | PyDoc_STRVAR(code_doc, |
| 136 | "code(argcount, nlocals, stacksize, flags, codestring, constants, names,\n\ |
| 137 | varnames, filename, name, firstlineno, lnotab[, freevars[, cellvars]])\n\ |
| 138 | \n\ |
| 139 | Create a code object. Not for the faint of heart."); |
| 140 | |
| 141 | static PyObject * |
| 142 | code_new(PyTypeObject *type, PyObject *args, PyObject *kw) |
| 143 | { |
| 144 | int argcount; |
| 145 | int nlocals; |
| 146 | int stacksize; |
| 147 | int flags; |
Tim Peters | d459f53 | 2004-08-12 18:16:43 +0000 | [diff] [blame] | 148 | PyObject *co = NULL; |
Guido van Rossum | bea18cc | 2002-06-14 20:41:17 +0000 | [diff] [blame] | 149 | PyObject *code; |
| 150 | PyObject *consts; |
Michael W. Hudson | 6093462 | 2004-08-12 17:56:29 +0000 | [diff] [blame] | 151 | PyObject *names, *ournames = NULL; |
| 152 | PyObject *varnames, *ourvarnames = NULL; |
| 153 | PyObject *freevars = NULL, *ourfreevars = NULL; |
| 154 | PyObject *cellvars = NULL, *ourcellvars = NULL; |
Guido van Rossum | bea18cc | 2002-06-14 20:41:17 +0000 | [diff] [blame] | 155 | PyObject *filename; |
| 156 | PyObject *name; |
| 157 | int firstlineno; |
| 158 | PyObject *lnotab; |
| 159 | |
| 160 | if (!PyArg_ParseTuple(args, "iiiiSO!O!O!SSiS|O!O!:code", |
| 161 | &argcount, &nlocals, &stacksize, &flags, |
| 162 | &code, |
| 163 | &PyTuple_Type, &consts, |
| 164 | &PyTuple_Type, &names, |
| 165 | &PyTuple_Type, &varnames, |
| 166 | &filename, &name, |
| 167 | &firstlineno, &lnotab, |
| 168 | &PyTuple_Type, &freevars, |
| 169 | &PyTuple_Type, &cellvars)) |
| 170 | return NULL; |
| 171 | |
Michael W. Hudson | 6093462 | 2004-08-12 17:56:29 +0000 | [diff] [blame] | 172 | if (argcount < 0) { |
| 173 | PyErr_SetString( |
| 174 | PyExc_ValueError, |
| 175 | "code: argcount must not be negative"); |
| 176 | goto cleanup; |
Guido van Rossum | bea18cc | 2002-06-14 20:41:17 +0000 | [diff] [blame] | 177 | } |
| 178 | |
Michael W. Hudson | 6093462 | 2004-08-12 17:56:29 +0000 | [diff] [blame] | 179 | if (nlocals < 0) { |
| 180 | PyErr_SetString( |
| 181 | PyExc_ValueError, |
| 182 | "code: nlocals must not be negative"); |
| 183 | goto cleanup; |
Raymond Hettinger | cc1798e | 2003-09-16 04:27:52 +0000 | [diff] [blame] | 184 | } |
Raymond Hettinger | 37a724d | 2003-09-15 21:43:16 +0000 | [diff] [blame] | 185 | |
Michael W. Hudson | 6093462 | 2004-08-12 17:56:29 +0000 | [diff] [blame] | 186 | ournames = validate_and_copy_tuple(names); |
| 187 | if (ournames == NULL) |
| 188 | goto cleanup; |
| 189 | ourvarnames = validate_and_copy_tuple(varnames); |
| 190 | if (ourvarnames == NULL) |
| 191 | goto cleanup; |
| 192 | if (freevars) |
| 193 | ourfreevars = validate_and_copy_tuple(freevars); |
| 194 | else |
| 195 | ourfreevars = PyTuple_New(0); |
| 196 | if (ourfreevars == NULL) |
| 197 | goto cleanup; |
| 198 | if (cellvars) |
| 199 | ourcellvars = validate_and_copy_tuple(cellvars); |
| 200 | else |
| 201 | ourcellvars = PyTuple_New(0); |
| 202 | if (ourcellvars == NULL) |
| 203 | goto cleanup; |
| 204 | |
Raymond Hettinger | 37a724d | 2003-09-15 21:43:16 +0000 | [diff] [blame] | 205 | co = (PyObject *) PyCode_New(argcount, nlocals, stacksize, flags, |
Michael W. Hudson | 6093462 | 2004-08-12 17:56:29 +0000 | [diff] [blame] | 206 | code, consts, ournames, ourvarnames, |
| 207 | ourfreevars, ourcellvars, filename, |
| 208 | name, firstlineno, lnotab); |
| 209 | cleanup: |
| 210 | Py_XDECREF(ournames); |
| 211 | Py_XDECREF(ourvarnames); |
| 212 | Py_XDECREF(ourfreevars); |
| 213 | Py_XDECREF(ourcellvars); |
Raymond Hettinger | 37a724d | 2003-09-15 21:43:16 +0000 | [diff] [blame] | 214 | return co; |
Guido van Rossum | bea18cc | 2002-06-14 20:41:17 +0000 | [diff] [blame] | 215 | } |
| 216 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 217 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 218 | code_dealloc(PyCodeObject *co) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 219 | { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 220 | Py_XDECREF(co->co_code); |
| 221 | Py_XDECREF(co->co_consts); |
| 222 | Py_XDECREF(co->co_names); |
Guido van Rossum | 275558c | 1997-07-25 20:13:49 +0000 | [diff] [blame] | 223 | Py_XDECREF(co->co_varnames); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 224 | Py_XDECREF(co->co_freevars); |
| 225 | Py_XDECREF(co->co_cellvars); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 226 | Py_XDECREF(co->co_filename); |
| 227 | Py_XDECREF(co->co_name); |
Guido van Rossum | 275558c | 1997-07-25 20:13:49 +0000 | [diff] [blame] | 228 | Py_XDECREF(co->co_lnotab); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 229 | PyObject_DEL(co); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 230 | } |
| 231 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 232 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 233 | code_repr(PyCodeObject *co) |
Guido van Rossum | 2dff991 | 1992-09-03 20:50:59 +0000 | [diff] [blame] | 234 | { |
| 235 | char buf[500]; |
| 236 | int lineno = -1; |
Guido van Rossum | 2dff991 | 1992-09-03 20:50:59 +0000 | [diff] [blame] | 237 | char *filename = "???"; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 238 | char *name = "???"; |
Guido van Rossum | d076c73 | 1998-10-07 19:42:25 +0000 | [diff] [blame] | 239 | |
Guido van Rossum | a396a88 | 2000-04-07 01:21:36 +0000 | [diff] [blame] | 240 | if (co->co_firstlineno != 0) |
| 241 | lineno = co->co_firstlineno; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 242 | if (co->co_filename && PyString_Check(co->co_filename)) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 243 | filename = PyString_AS_STRING(co->co_filename); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 244 | if (co->co_name && PyString_Check(co->co_name)) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 245 | name = PyString_AS_STRING(co->co_name); |
Barry Warsaw | 8f6d868 | 2001-11-28 21:10:39 +0000 | [diff] [blame] | 246 | PyOS_snprintf(buf, sizeof(buf), |
| 247 | "<code object %.100s at %p, file \"%.300s\", line %d>", |
| 248 | name, co, filename, lineno); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 249 | return PyString_FromString(buf); |
Guido van Rossum | 2dff991 | 1992-09-03 20:50:59 +0000 | [diff] [blame] | 250 | } |
| 251 | |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 252 | static int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 253 | code_compare(PyCodeObject *co, PyCodeObject *cp) |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 254 | { |
| 255 | int cmp; |
Guido van Rossum | 4467959 | 2000-04-10 16:20:31 +0000 | [diff] [blame] | 256 | cmp = PyObject_Compare(co->co_name, cp->co_name); |
| 257 | if (cmp) return cmp; |
Guido van Rossum | beef8aa | 1997-08-29 17:12:43 +0000 | [diff] [blame] | 258 | cmp = co->co_argcount - cp->co_argcount; |
Michael W. Hudson | 3ae3315 | 2002-10-03 09:50:47 +0000 | [diff] [blame] | 259 | if (cmp) return (cmp<0)?-1:1; |
Guido van Rossum | beef8aa | 1997-08-29 17:12:43 +0000 | [diff] [blame] | 260 | cmp = co->co_nlocals - cp->co_nlocals; |
Michael W. Hudson | 3ae3315 | 2002-10-03 09:50:47 +0000 | [diff] [blame] | 261 | if (cmp) return (cmp<0)?-1:1; |
Guido van Rossum | beef8aa | 1997-08-29 17:12:43 +0000 | [diff] [blame] | 262 | cmp = co->co_flags - cp->co_flags; |
Michael W. Hudson | 3ae3315 | 2002-10-03 09:50:47 +0000 | [diff] [blame] | 263 | if (cmp) return (cmp<0)?-1:1; |
Guido van Rossum | d076c73 | 1998-10-07 19:42:25 +0000 | [diff] [blame] | 264 | cmp = PyObject_Compare(co->co_code, cp->co_code); |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 265 | if (cmp) return cmp; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 266 | cmp = PyObject_Compare(co->co_consts, cp->co_consts); |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 267 | if (cmp) return cmp; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 268 | cmp = PyObject_Compare(co->co_names, cp->co_names); |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 269 | if (cmp) return cmp; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 270 | cmp = PyObject_Compare(co->co_varnames, cp->co_varnames); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 271 | if (cmp) return cmp; |
| 272 | cmp = PyObject_Compare(co->co_freevars, cp->co_freevars); |
| 273 | if (cmp) return cmp; |
| 274 | cmp = PyObject_Compare(co->co_cellvars, cp->co_cellvars); |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 275 | return cmp; |
| 276 | } |
| 277 | |
| 278 | static long |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 279 | code_hash(PyCodeObject *co) |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 280 | { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 281 | long h, h0, h1, h2, h3, h4, h5, h6; |
Guido van Rossum | 4467959 | 2000-04-10 16:20:31 +0000 | [diff] [blame] | 282 | h0 = PyObject_Hash(co->co_name); |
| 283 | if (h0 == -1) return -1; |
Guido van Rossum | d076c73 | 1998-10-07 19:42:25 +0000 | [diff] [blame] | 284 | h1 = PyObject_Hash(co->co_code); |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 285 | if (h1 == -1) return -1; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 286 | h2 = PyObject_Hash(co->co_consts); |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 287 | if (h2 == -1) return -1; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 288 | h3 = PyObject_Hash(co->co_names); |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 289 | if (h3 == -1) return -1; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 290 | h4 = PyObject_Hash(co->co_varnames); |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 291 | if (h4 == -1) return -1; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 292 | h5 = PyObject_Hash(co->co_freevars); |
| 293 | if (h5 == -1) return -1; |
| 294 | h6 = PyObject_Hash(co->co_cellvars); |
| 295 | if (h6 == -1) return -1; |
| 296 | h = h0 ^ h1 ^ h2 ^ h3 ^ h4 ^ h5 ^ h6 ^ |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 297 | co->co_argcount ^ co->co_nlocals ^ co->co_flags; |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 298 | if (h == -1) h = -2; |
| 299 | return h; |
| 300 | } |
| 301 | |
Jeremy Hylton | 7889107 | 2001-03-01 06:09:34 +0000 | [diff] [blame] | 302 | /* XXX code objects need to participate in GC? */ |
| 303 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 304 | PyTypeObject PyCode_Type = { |
| 305 | PyObject_HEAD_INIT(&PyType_Type) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 306 | 0, |
| 307 | "code", |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 308 | sizeof(PyCodeObject), |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 309 | 0, |
Jeremy Hylton | c785f48 | 2001-09-14 20:08:07 +0000 | [diff] [blame] | 310 | (destructor)code_dealloc, /* tp_dealloc */ |
| 311 | 0, /* tp_print */ |
| 312 | 0, /* tp_getattr */ |
| 313 | 0, /* tp_setattr */ |
| 314 | (cmpfunc)code_compare, /* tp_compare */ |
| 315 | (reprfunc)code_repr, /* tp_repr */ |
| 316 | 0, /* tp_as_number */ |
| 317 | 0, /* tp_as_sequence */ |
| 318 | 0, /* tp_as_mapping */ |
| 319 | (hashfunc)code_hash, /* tp_hash */ |
| 320 | 0, /* tp_call */ |
| 321 | 0, /* tp_str */ |
| 322 | PyObject_GenericGetAttr, /* tp_getattro */ |
| 323 | 0, /* tp_setattro */ |
| 324 | 0, /* tp_as_buffer */ |
| 325 | Py_TPFLAGS_DEFAULT, /* tp_flags */ |
Guido van Rossum | bea18cc | 2002-06-14 20:41:17 +0000 | [diff] [blame] | 326 | code_doc, /* tp_doc */ |
Jeremy Hylton | c785f48 | 2001-09-14 20:08:07 +0000 | [diff] [blame] | 327 | 0, /* tp_traverse */ |
| 328 | 0, /* tp_clear */ |
| 329 | 0, /* tp_richcompare */ |
| 330 | 0, /* tp_weaklistoffset */ |
| 331 | 0, /* tp_iter */ |
| 332 | 0, /* tp_iternext */ |
| 333 | 0, /* tp_methods */ |
| 334 | code_memberlist, /* tp_members */ |
| 335 | 0, /* tp_getset */ |
| 336 | 0, /* tp_base */ |
| 337 | 0, /* tp_dict */ |
| 338 | 0, /* tp_descr_get */ |
| 339 | 0, /* tp_descr_set */ |
| 340 | 0, /* tp_dictoffset */ |
| 341 | 0, /* tp_init */ |
| 342 | 0, /* tp_alloc */ |
Guido van Rossum | bea18cc | 2002-06-14 20:41:17 +0000 | [diff] [blame] | 343 | code_new, /* tp_new */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 344 | }; |
| 345 | |
Guido van Rossum | 644a12b | 1997-04-09 19:24:53 +0000 | [diff] [blame] | 346 | #define NAME_CHARS \ |
| 347 | "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz" |
| 348 | |
Guido van Rossum | fc5ce61 | 2001-01-19 00:24:06 +0000 | [diff] [blame] | 349 | /* all_name_chars(s): true iff all chars in s are valid NAME_CHARS */ |
| 350 | |
| 351 | static int |
| 352 | all_name_chars(unsigned char *s) |
| 353 | { |
Guido van Rossum | cd90c20 | 2001-02-09 15:06:42 +0000 | [diff] [blame] | 354 | static char ok_name_char[256]; |
| 355 | static unsigned char *name_chars = (unsigned char *)NAME_CHARS; |
Guido van Rossum | fc5ce61 | 2001-01-19 00:24:06 +0000 | [diff] [blame] | 356 | |
Guido van Rossum | cd90c20 | 2001-02-09 15:06:42 +0000 | [diff] [blame] | 357 | if (ok_name_char[*name_chars] == 0) { |
| 358 | unsigned char *p; |
| 359 | for (p = name_chars; *p; p++) |
| 360 | ok_name_char[*p] = 1; |
| 361 | } |
| 362 | while (*s) { |
| 363 | if (ok_name_char[*s++] == 0) |
| 364 | return 0; |
| 365 | } |
| 366 | return 1; |
Guido van Rossum | fc5ce61 | 2001-01-19 00:24:06 +0000 | [diff] [blame] | 367 | } |
| 368 | |
Michael W. Hudson | 6093462 | 2004-08-12 17:56:29 +0000 | [diff] [blame] | 369 | static void |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 370 | intern_strings(PyObject *tuple) |
| 371 | { |
| 372 | int i; |
| 373 | |
| 374 | for (i = PyTuple_GET_SIZE(tuple); --i >= 0; ) { |
| 375 | PyObject *v = PyTuple_GET_ITEM(tuple, i); |
Michael W. Hudson | 6093462 | 2004-08-12 17:56:29 +0000 | [diff] [blame] | 376 | if (v == NULL || !PyString_CheckExact(v)) { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 377 | Py_FatalError("non-string found in code slot"); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 378 | } |
| 379 | PyString_InternInPlace(&PyTuple_GET_ITEM(tuple, i)); |
| 380 | } |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 381 | } |
| 382 | |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 383 | #define GETARG(arr, i) ((int)((arr[i+2]<<8) + arr[i+1])) |
| 384 | #define UNCONDITIONAL_JUMP(op) (op==JUMP_ABSOLUTE || op==JUMP_FORWARD) |
Raymond Hettinger | 5b75c38 | 2003-03-28 12:05:00 +0000 | [diff] [blame] | 385 | #define ABSOLUTE_JUMP(op) (op==JUMP_ABSOLUTE || op==CONTINUE_LOOP) |
| 386 | #define GETJUMPTGT(arr, i) (GETARG(arr,i) + (ABSOLUTE_JUMP(arr[i]) ? 0 : i+3)) |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 387 | #define SETARG(arr, i, val) arr[i+2] = val>>8; arr[i+1] = val & 255 |
Raymond Hettinger | ff5bc50 | 2004-03-21 15:12:00 +0000 | [diff] [blame] | 388 | #define CODESIZE(op) (HAS_ARG(op) ? 3 : 1) |
| 389 | #define ISBASICBLOCK(blocks, start, bytes) (blocks[start]==blocks[start+bytes-1]) |
| 390 | |
| 391 | static unsigned int * |
| 392 | markblocks(unsigned char *code, int len) |
| 393 | { |
| 394 | unsigned int *blocks = PyMem_Malloc(len*sizeof(int)); |
| 395 | int i,j, opcode, oldblock, newblock, blockcnt = 0; |
| 396 | |
| 397 | if (blocks == NULL) |
| 398 | return NULL; |
| 399 | memset(blocks, 0, len*sizeof(int)); |
| 400 | for (i=0 ; i<len ; i+=CODESIZE(opcode)) { |
| 401 | opcode = code[i]; |
| 402 | switch (opcode) { |
| 403 | case FOR_ITER: |
| 404 | case JUMP_FORWARD: |
| 405 | case JUMP_IF_FALSE: |
| 406 | case JUMP_IF_TRUE: |
| 407 | case JUMP_ABSOLUTE: |
| 408 | case CONTINUE_LOOP: |
| 409 | case SETUP_LOOP: |
| 410 | case SETUP_EXCEPT: |
| 411 | case SETUP_FINALLY: |
| 412 | j = GETJUMPTGT(code, i); |
| 413 | oldblock = blocks[j]; |
| 414 | newblock = ++blockcnt; |
| 415 | for (; j<len ; j++) { |
| 416 | if (blocks[j] != (unsigned)oldblock) |
| 417 | break; |
| 418 | blocks[j] = newblock; |
| 419 | } |
| 420 | break; |
| 421 | } |
| 422 | } |
| 423 | return blocks; |
| 424 | } |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 425 | |
| 426 | static PyObject * |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 427 | optimize_code(PyObject *code, PyObject* consts, PyObject *names, PyObject *lineno_obj) |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 428 | { |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 429 | int i, j, codelen, nops, h, adj; |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 430 | int tgt, tgttgt, opcode; |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 431 | unsigned char *codestr = NULL; |
| 432 | unsigned char *lineno; |
| 433 | int *addrmap = NULL; |
| 434 | int new_line, cum_orig_line, last_line, tabsiz; |
Raymond Hettinger | ff5bc50 | 2004-03-21 15:12:00 +0000 | [diff] [blame] | 435 | unsigned int *blocks; |
Raymond Hettinger | 76d962d | 2004-07-16 12:16:48 +0000 | [diff] [blame] | 436 | char *name; |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 437 | |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 438 | if (!PyString_Check(code)) |
| 439 | goto exitUnchanged; |
Raymond Hettinger | a12fa14 | 2004-08-24 04:34:16 +0000 | [diff] [blame] | 440 | |
| 441 | /* Avoid situations where jump retargeting could overflow */ |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 442 | codelen = PyString_Size(code); |
Raymond Hettinger | a12fa14 | 2004-08-24 04:34:16 +0000 | [diff] [blame] | 443 | if (codelen > 32000) |
| 444 | goto exitUnchanged; |
| 445 | |
| 446 | /* Make a modifiable copy of the code string */ |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 447 | codestr = PyMem_Malloc(codelen); |
Raymond Hettinger | ff5bc50 | 2004-03-21 15:12:00 +0000 | [diff] [blame] | 448 | if (codestr == NULL) |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 449 | goto exitUnchanged; |
| 450 | codestr = memcpy(codestr, PyString_AS_STRING(code), codelen); |
Raymond Hettinger | 98bd181 | 2004-08-06 19:46:34 +0000 | [diff] [blame] | 451 | |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 452 | /* Mapping to new jump targets after NOPs are removed */ |
| 453 | addrmap = PyMem_Malloc(codelen * sizeof(int)); |
| 454 | if (addrmap == NULL) |
| 455 | goto exitUnchanged; |
| 456 | |
Raymond Hettinger | ff5bc50 | 2004-03-21 15:12:00 +0000 | [diff] [blame] | 457 | blocks = markblocks(codestr, codelen); |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 458 | if (blocks == NULL) |
Raymond Hettinger | ff5bc50 | 2004-03-21 15:12:00 +0000 | [diff] [blame] | 459 | goto exitUnchanged; |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 460 | assert(PyTuple_Check(consts)); |
| 461 | |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 462 | for (i=0, nops=0 ; i<codelen ; i += CODESIZE(codestr[i])) { |
| 463 | addrmap[i] = i - nops; |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 464 | opcode = codestr[i]; |
| 465 | switch (opcode) { |
| 466 | |
Raymond Hettinger | 43ea47f | 2004-06-24 09:25:39 +0000 | [diff] [blame] | 467 | /* Replace UNARY_NOT JUMP_IF_FALSE POP_TOP with |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 468 | with JUMP_IF_TRUE POP_TOP */ |
Raymond Hettinger | 9c18e81 | 2004-06-21 16:31:15 +0000 | [diff] [blame] | 469 | case UNARY_NOT: |
| 470 | if (codestr[i+1] != JUMP_IF_FALSE || |
| 471 | codestr[i+4] != POP_TOP || |
| 472 | !ISBASICBLOCK(blocks,i,5)) |
| 473 | continue; |
| 474 | tgt = GETJUMPTGT(codestr, (i+1)); |
| 475 | if (codestr[tgt] != POP_TOP) |
| 476 | continue; |
Raymond Hettinger | 43ea47f | 2004-06-24 09:25:39 +0000 | [diff] [blame] | 477 | j = GETARG(codestr, i+1) + 1; |
| 478 | codestr[i] = JUMP_IF_TRUE; |
| 479 | SETARG(codestr, i, j); |
| 480 | codestr[i+3] = POP_TOP; |
| 481 | codestr[i+4] = NOP; |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 482 | nops++; |
Raymond Hettinger | 9c18e81 | 2004-06-21 16:31:15 +0000 | [diff] [blame] | 483 | break; |
| 484 | |
| 485 | /* not a is b --> a is not b |
| 486 | not a in b --> a not in b |
| 487 | not a is not b --> a is b |
| 488 | not a not in b --> a in b */ |
| 489 | case COMPARE_OP: |
| 490 | j = GETARG(codestr, i); |
| 491 | if (j < 6 || j > 9 || |
| 492 | codestr[i+3] != UNARY_NOT || |
| 493 | !ISBASICBLOCK(blocks,i,4)) |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 494 | continue; |
Raymond Hettinger | 9c18e81 | 2004-06-21 16:31:15 +0000 | [diff] [blame] | 495 | SETARG(codestr, i, (j^1)); |
| 496 | codestr[i+3] = NOP; |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 497 | nops++; |
Tim Peters | db5860b | 2004-07-17 05:00:52 +0000 | [diff] [blame] | 498 | break; |
| 499 | |
Raymond Hettinger | 76d962d | 2004-07-16 12:16:48 +0000 | [diff] [blame] | 500 | /* Replace LOAD_GLOBAL/LOAD_NAME None with LOAD_CONST None */ |
| 501 | case LOAD_NAME: |
| 502 | case LOAD_GLOBAL: |
| 503 | j = GETARG(codestr, i); |
| 504 | name = PyString_AsString(PyTuple_GET_ITEM(names, j)); |
| 505 | if (name == NULL || strcmp(name, "None") != 0) |
| 506 | continue; |
| 507 | for (j=0 ; j < PyTuple_GET_SIZE(consts) ; j++) { |
| 508 | if (PyTuple_GET_ITEM(consts, j) == Py_None) { |
| 509 | codestr[i] = LOAD_CONST; |
| 510 | SETARG(codestr, i, j); |
| 511 | break; |
| 512 | } |
| 513 | } |
Raymond Hettinger | 9c18e81 | 2004-06-21 16:31:15 +0000 | [diff] [blame] | 514 | break; |
| 515 | |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 516 | /* Skip over LOAD_CONST trueconst JUMP_IF_FALSE xx POP_TOP */ |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 517 | case LOAD_CONST: |
| 518 | j = GETARG(codestr, i); |
| 519 | if (codestr[i+3] != JUMP_IF_FALSE || |
| 520 | codestr[i+6] != POP_TOP || |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 521 | !ISBASICBLOCK(blocks,i,7) || |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 522 | !PyObject_IsTrue(PyTuple_GET_ITEM(consts, j))) |
| 523 | continue; |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 524 | memset(codestr+i, NOP, 7); |
| 525 | nops += 7; |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 526 | break; |
| 527 | |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 528 | /* Skip over BUILD_SEQN 1 UNPACK_SEQN 1. |
| 529 | Replace BUILD_SEQN 2 UNPACK_SEQN 2 with ROT2. |
| 530 | Replace BUILD_SEQN 3 UNPACK_SEQN 3 with ROT3 ROT2. */ |
Raymond Hettinger | ff5bc50 | 2004-03-21 15:12:00 +0000 | [diff] [blame] | 531 | case BUILD_TUPLE: |
| 532 | case BUILD_LIST: |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 533 | j = GETARG(codestr, i); |
| 534 | if (codestr[i+3] != UNPACK_SEQUENCE || |
| 535 | !ISBASICBLOCK(blocks,i,6) || |
| 536 | j != GETARG(codestr, i+3)) |
Raymond Hettinger | ff5bc50 | 2004-03-21 15:12:00 +0000 | [diff] [blame] | 537 | continue; |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 538 | if (j == 1) { |
| 539 | memset(codestr+i, NOP, 6); |
| 540 | nops += 6; |
| 541 | } else if (j == 2) { |
Raymond Hettinger | ff5bc50 | 2004-03-21 15:12:00 +0000 | [diff] [blame] | 542 | codestr[i] = ROT_TWO; |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 543 | memset(codestr+i+1, NOP, 5); |
| 544 | nops += 5; |
| 545 | } else if (j == 3) { |
Raymond Hettinger | ff5bc50 | 2004-03-21 15:12:00 +0000 | [diff] [blame] | 546 | codestr[i] = ROT_THREE; |
| 547 | codestr[i+1] = ROT_TWO; |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 548 | memset(codestr+i+2, NOP, 4); |
| 549 | nops += 4; |
Raymond Hettinger | ff5bc50 | 2004-03-21 15:12:00 +0000 | [diff] [blame] | 550 | } |
| 551 | break; |
| 552 | |
Raymond Hettinger | ef0a82b | 2004-08-25 03:18:29 +0000 | [diff] [blame] | 553 | /* Simplify conditional jump to conditional jump where the |
| 554 | result of the first test implies the success of a similar |
| 555 | test or the failure of the opposite test. |
| 556 | Arises in code like: |
| 557 | "a and b or c" |
| 558 | "a and b and c" |
| 559 | x:JUMP_IF_FALSE y y:JUMP_IF_FALSE z --> x:JUMP_IF_FALSE z |
Raymond Hettinger | 65d3c05 | 2004-08-25 15:15:56 +0000 | [diff] [blame^] | 560 | x:JUMP_IF_FALSE y y:JUMP_IF_TRUE z --> x:JUMP_IF_FALSE y+3 |
| 561 | where y+3 is the instruction following the second test. |
Raymond Hettinger | ef0a82b | 2004-08-25 03:18:29 +0000 | [diff] [blame] | 562 | */ |
| 563 | case JUMP_IF_FALSE: |
| 564 | case JUMP_IF_TRUE: |
| 565 | tgt = GETJUMPTGT(codestr, i); |
| 566 | j = codestr[tgt]; |
| 567 | if (j == JUMP_IF_FALSE || j == JUMP_IF_TRUE) { |
| 568 | if (j == opcode) { |
| 569 | tgttgt = GETJUMPTGT(codestr, tgt) - i - 3; |
| 570 | SETARG(codestr, i, tgttgt); |
| 571 | } else { |
| 572 | tgt -= i; |
| 573 | SETARG(codestr, i, tgt); |
| 574 | } |
| 575 | break; |
| 576 | } |
| 577 | /* Intentional fallthrough */ |
| 578 | |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 579 | /* Replace jumps to unconditional jumps */ |
Raymond Hettinger | 255a3d0 | 2003-04-15 10:35:07 +0000 | [diff] [blame] | 580 | case FOR_ITER: |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 581 | case JUMP_FORWARD: |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 582 | case JUMP_ABSOLUTE: |
| 583 | case CONTINUE_LOOP: |
| 584 | case SETUP_LOOP: |
| 585 | case SETUP_EXCEPT: |
| 586 | case SETUP_FINALLY: |
| 587 | tgt = GETJUMPTGT(codestr, i); |
Raymond Hettinger | ff5bc50 | 2004-03-21 15:12:00 +0000 | [diff] [blame] | 588 | if (!UNCONDITIONAL_JUMP(codestr[tgt])) |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 589 | continue; |
| 590 | tgttgt = GETJUMPTGT(codestr, tgt); |
| 591 | if (opcode == JUMP_FORWARD) /* JMP_ABS can go backwards */ |
| 592 | opcode = JUMP_ABSOLUTE; |
Raymond Hettinger | 5b75c38 | 2003-03-28 12:05:00 +0000 | [diff] [blame] | 593 | if (!ABSOLUTE_JUMP(opcode)) |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 594 | tgttgt -= i + 3; /* Calc relative jump addr */ |
| 595 | if (tgttgt < 0) /* No backward relative jumps */ |
| 596 | continue; |
| 597 | codestr[i] = opcode; |
| 598 | SETARG(codestr, i, tgttgt); |
| 599 | break; |
| 600 | |
| 601 | case EXTENDED_ARG: |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 602 | goto exitUnchanged; |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 603 | |
| 604 | /* Replace RETURN LOAD_CONST None RETURN with just RETURN */ |
| 605 | case RETURN_VALUE: |
| 606 | if (i+4 >= codelen || |
| 607 | codestr[i+4] != RETURN_VALUE || |
| 608 | !ISBASICBLOCK(blocks,i,5)) |
| 609 | continue; |
| 610 | memset(codestr+i+1, NOP, 4); |
| 611 | nops += 4; |
| 612 | break; |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 613 | } |
| 614 | } |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 615 | |
| 616 | /* Fixup linenotab */ |
Raymond Hettinger | a12fa14 | 2004-08-24 04:34:16 +0000 | [diff] [blame] | 617 | /* XXX make sure this handles intervals > 256 */ |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 618 | assert(PyString_Check(lineno_obj)); |
| 619 | lineno = PyString_AS_STRING(lineno_obj); |
| 620 | tabsiz = PyString_GET_SIZE(lineno_obj); |
| 621 | cum_orig_line = 0; |
| 622 | last_line = 0; |
| 623 | for (i=0 ; i < tabsiz ; i+=2) { |
| 624 | cum_orig_line += lineno[i]; |
| 625 | new_line = addrmap[cum_orig_line]; |
| 626 | lineno[i] =((unsigned char)(new_line - last_line)); |
| 627 | last_line = new_line; |
| 628 | } |
| 629 | |
| 630 | /* Remove NOPs and fixup jump targets */ |
| 631 | for (i=0, h=0 ; i<codelen ; ) { |
| 632 | opcode = codestr[i]; |
| 633 | switch (opcode) { |
| 634 | case NOP: |
| 635 | i++; |
| 636 | continue; |
| 637 | |
| 638 | case JUMP_ABSOLUTE: |
| 639 | case CONTINUE_LOOP: |
| 640 | j = addrmap[GETARG(codestr, i)]; |
| 641 | SETARG(codestr, i, j); |
| 642 | break; |
| 643 | |
| 644 | case FOR_ITER: |
| 645 | case JUMP_FORWARD: |
| 646 | case JUMP_IF_FALSE: |
| 647 | case JUMP_IF_TRUE: |
| 648 | case SETUP_LOOP: |
| 649 | case SETUP_EXCEPT: |
| 650 | case SETUP_FINALLY: |
| 651 | j = addrmap[GETARG(codestr, i) + i + 3] - addrmap[i] - 3; |
| 652 | SETARG(codestr, i, j); |
| 653 | break; |
| 654 | } |
| 655 | adj = CODESIZE(opcode); |
| 656 | while (adj--) |
| 657 | codestr[h++] = codestr[i++]; |
| 658 | } |
Raymond Hettinger | a12fa14 | 2004-08-24 04:34:16 +0000 | [diff] [blame] | 659 | assert(h + nops == codelen); |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 660 | |
| 661 | code = PyString_FromStringAndSize((char *)codestr, h); |
| 662 | PyMem_Free(addrmap); |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 663 | PyMem_Free(codestr); |
Raymond Hettinger | ff5bc50 | 2004-03-21 15:12:00 +0000 | [diff] [blame] | 664 | PyMem_Free(blocks); |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 665 | return code; |
| 666 | |
| 667 | exitUnchanged: |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 668 | if (addrmap != NULL) |
| 669 | PyMem_Free(addrmap); |
| 670 | if (codestr != NULL) |
| 671 | PyMem_Free(codestr); |
Raymond Hettinger | f6f575a | 2003-03-26 01:07:54 +0000 | [diff] [blame] | 672 | Py_INCREF(code); |
| 673 | return code; |
| 674 | } |
| 675 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 676 | PyCodeObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 677 | PyCode_New(int argcount, int nlocals, int stacksize, int flags, |
| 678 | PyObject *code, PyObject *consts, PyObject *names, |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 679 | PyObject *varnames, PyObject *freevars, PyObject *cellvars, |
| 680 | PyObject *filename, PyObject *name, int firstlineno, |
| 681 | PyObject *lnotab) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 682 | { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 683 | PyCodeObject *co; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 684 | int i; |
| 685 | /* Check argument types */ |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 686 | if (argcount < 0 || nlocals < 0 || |
Guido van Rossum | d076c73 | 1998-10-07 19:42:25 +0000 | [diff] [blame] | 687 | code == NULL || |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 688 | consts == NULL || !PyTuple_Check(consts) || |
| 689 | names == NULL || !PyTuple_Check(names) || |
| 690 | varnames == NULL || !PyTuple_Check(varnames) || |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 691 | freevars == NULL || !PyTuple_Check(freevars) || |
| 692 | cellvars == NULL || !PyTuple_Check(cellvars) || |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 693 | name == NULL || !PyString_Check(name) || |
| 694 | filename == NULL || !PyString_Check(filename) || |
Jeremy Hylton | 9f64caa | 2001-11-09 22:02:48 +0000 | [diff] [blame] | 695 | lnotab == NULL || !PyString_Check(lnotab) || |
| 696 | !PyObject_CheckReadBuffer(code)) { |
Guido van Rossum | d076c73 | 1998-10-07 19:42:25 +0000 | [diff] [blame] | 697 | PyErr_BadInternalCall(); |
| 698 | return NULL; |
| 699 | } |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 700 | intern_strings(names); |
| 701 | intern_strings(varnames); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 702 | intern_strings(freevars); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 703 | intern_strings(cellvars); |
Guido van Rossum | 7b89b6a | 1997-01-18 08:02:57 +0000 | [diff] [blame] | 704 | /* Intern selected string constants */ |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 705 | for (i = PyTuple_Size(consts); --i >= 0; ) { |
| 706 | PyObject *v = PyTuple_GetItem(consts, i); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 707 | if (!PyString_Check(v)) |
Guido van Rossum | 7b89b6a | 1997-01-18 08:02:57 +0000 | [diff] [blame] | 708 | continue; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 709 | if (!all_name_chars((unsigned char *)PyString_AS_STRING(v))) |
Guido van Rossum | 7b89b6a | 1997-01-18 08:02:57 +0000 | [diff] [blame] | 710 | continue; |
| 711 | PyString_InternInPlace(&PyTuple_GET_ITEM(consts, i)); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 712 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 713 | co = PyObject_NEW(PyCodeObject, &PyCode_Type); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 714 | if (co != NULL) { |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 715 | co->co_argcount = argcount; |
| 716 | co->co_nlocals = nlocals; |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 717 | co->co_stacksize = stacksize; |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 718 | co->co_flags = flags; |
Raymond Hettinger | 1a78929 | 2004-08-18 05:22:06 +0000 | [diff] [blame] | 719 | Py_INCREF(code); |
| 720 | co->co_code = code; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 721 | Py_INCREF(consts); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 722 | co->co_consts = consts; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 723 | Py_INCREF(names); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 724 | co->co_names = names; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 725 | Py_INCREF(varnames); |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 726 | co->co_varnames = varnames; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 727 | Py_INCREF(freevars); |
| 728 | co->co_freevars = freevars; |
| 729 | Py_INCREF(cellvars); |
| 730 | co->co_cellvars = cellvars; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 731 | Py_INCREF(filename); |
Guido van Rossum | a082ce4 | 1991-06-04 19:41:56 +0000 | [diff] [blame] | 732 | co->co_filename = filename; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 733 | Py_INCREF(name); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 734 | co->co_name = name; |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 735 | co->co_firstlineno = firstlineno; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 736 | Py_INCREF(lnotab); |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 737 | co->co_lnotab = lnotab; |
Jeremy Hylton | 985eba5 | 2003-02-05 23:13:00 +0000 | [diff] [blame] | 738 | if (PyTuple_GET_SIZE(freevars) == 0 && |
| 739 | PyTuple_GET_SIZE(cellvars) == 0) |
| 740 | co->co_flags |= CO_NOFREE; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 741 | } |
| 742 | return co; |
| 743 | } |
| 744 | |
| 745 | |
| 746 | /* Data structure used internally */ |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 747 | |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 748 | /* The compiler uses two passes to generate bytecodes. The first pass |
| 749 | builds the symbol table. The second pass generates the bytecode. |
| 750 | |
| 751 | The first pass uses a single symtable struct. The second pass uses |
| 752 | a compiling struct for each code block. The compiling structs |
| 753 | share a reference to the symtable. |
| 754 | |
| 755 | The two passes communicate via symtable_load_symbols() and via |
| 756 | is_local() and is_global(). The former initializes several slots |
| 757 | in the compiling struct: c_varnames, c_locals, c_nlocals, |
| 758 | c_argcount, c_globals, and c_flags. |
| 759 | */ |
| 760 | |
Tim Peters | 2a7f384 | 2001-06-09 09:26:21 +0000 | [diff] [blame] | 761 | /* All about c_lnotab. |
| 762 | |
Michael W. Hudson | dd32a91 | 2002-08-15 14:59:02 +0000 | [diff] [blame] | 763 | c_lnotab is an array of unsigned bytes disguised as a Python string. Since |
| 764 | version 2.3, SET_LINENO opcodes are never generated and bytecode offsets are |
| 765 | mapped to source code line #s via c_lnotab instead. |
| 766 | |
Tim Peters | 2a7f384 | 2001-06-09 09:26:21 +0000 | [diff] [blame] | 767 | The array is conceptually a list of |
| 768 | (bytecode offset increment, line number increment) |
| 769 | pairs. The details are important and delicate, best illustrated by example: |
| 770 | |
| 771 | byte code offset source code line number |
| 772 | 0 1 |
| 773 | 6 2 |
| 774 | 50 7 |
| 775 | 350 307 |
| 776 | 361 308 |
| 777 | |
| 778 | The first trick is that these numbers aren't stored, only the increments |
| 779 | from one row to the next (this doesn't really work, but it's a start): |
| 780 | |
| 781 | 0, 1, 6, 1, 44, 5, 300, 300, 11, 1 |
| 782 | |
| 783 | The second trick is that an unsigned byte can't hold negative values, or |
| 784 | values larger than 255, so (a) there's a deep assumption that byte code |
| 785 | offsets and their corresponding line #s both increase monotonically, and (b) |
| 786 | if at least one column jumps by more than 255 from one row to the next, more |
| 787 | than one pair is written to the table. In case #b, there's no way to know |
| 788 | from looking at the table later how many were written. That's the delicate |
| 789 | part. A user of c_lnotab desiring to find the source line number |
| 790 | corresponding to a bytecode address A should do something like this |
| 791 | |
| 792 | lineno = addr = 0 |
| 793 | for addr_incr, line_incr in c_lnotab: |
| 794 | addr += addr_incr |
| 795 | if addr > A: |
| 796 | return lineno |
| 797 | lineno += line_incr |
| 798 | |
| 799 | In order for this to work, when the addr field increments by more than 255, |
| 800 | the line # increment in each pair generated must be 0 until the remaining addr |
| 801 | increment is < 256. So, in the example above, com_set_lineno should not (as |
| 802 | was actually done until 2.2) expand 300, 300 to 255, 255, 45, 45, but to |
| 803 | 255, 0, 45, 255, 0, 45. |
| 804 | */ |
| 805 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 806 | struct compiling { |
Fred Drake | fd1f1be | 2000-09-08 16:31:24 +0000 | [diff] [blame] | 807 | PyObject *c_code; /* string */ |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 808 | PyObject *c_consts; /* list of objects */ |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 809 | PyObject *c_const_dict; /* inverse of c_consts */ |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 810 | PyObject *c_names; /* list of strings (names) */ |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 811 | PyObject *c_name_dict; /* inverse of c_names */ |
Neal Norwitz | 0698222 | 2002-12-18 01:18:44 +0000 | [diff] [blame] | 812 | PyObject *c_globals; /* dictionary (value=None or True) */ |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 813 | PyObject *c_locals; /* dictionary (value=localID) */ |
| 814 | PyObject *c_varnames; /* list (inverse of c_locals) */ |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 815 | PyObject *c_freevars; /* dictionary (value=None) */ |
Brett Cannon | 31f8350 | 2004-08-15 01:15:01 +0000 | [diff] [blame] | 816 | PyObject *c_cellvars; /* dictionary */ |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 817 | int c_nlocals; /* index of next local */ |
| 818 | int c_argcount; /* number of top-level arguments */ |
| 819 | int c_flags; /* same as co_flags */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 820 | int c_nexti; /* index into c_code */ |
| 821 | int c_errors; /* counts errors occurred */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 822 | int c_infunction; /* set when compiling a function */ |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 823 | int c_interactive; /* generating code for interactive command */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 824 | int c_loops; /* counts nested loops */ |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 825 | int c_begin; /* begin of current loop, for 'continue' */ |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 826 | int c_block[CO_MAXBLOCKS]; /* stack of block types */ |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 827 | int c_nblocks; /* current block stack level */ |
Martin v. Löwis | 95292d6 | 2002-12-11 14:04:59 +0000 | [diff] [blame] | 828 | const char *c_filename; /* filename of current node */ |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 829 | char *c_name; /* name of object (e.g. function) */ |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 830 | int c_lineno; /* Current line number */ |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 831 | int c_stacklevel; /* Current stack level */ |
| 832 | int c_maxstacklevel; /* Maximum stack level */ |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 833 | int c_firstlineno; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 834 | PyObject *c_lnotab; /* Table mapping address to line number */ |
Armin Rigo | 80d937e | 2004-03-22 17:52:53 +0000 | [diff] [blame] | 835 | int c_last_addr; /* last op addr seen and recorded in lnotab */ |
| 836 | int c_last_line; /* last line seen and recorded in lnotab */ |
| 837 | int c_lnotab_next; /* current length of lnotab */ |
| 838 | int c_lnotab_last; /* start of last lnotab record added */ |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 839 | char *c_private; /* for private name mangling */ |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 840 | int c_tmpname; /* temporary local name counter */ |
Guido van Rossum | cd90c20 | 2001-02-09 15:06:42 +0000 | [diff] [blame] | 841 | int c_nested; /* Is block nested funcdef or lamdef? */ |
| 842 | int c_closure; /* Is nested w/freevars? */ |
| 843 | struct symtable *c_symtable; /* pointer to module symbol table */ |
Jeremy Hylton | 4db62b1 | 2001-02-27 19:07:02 +0000 | [diff] [blame] | 844 | PyFutureFeatures *c_future; /* pointer to module's __future__ */ |
Martin v. Löwis | 00f1e3f | 2002-08-04 17:29:52 +0000 | [diff] [blame] | 845 | char *c_encoding; /* source encoding (a borrowed reference) */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 846 | }; |
| 847 | |
Guido van Rossum | f68d8e5 | 2001-04-14 17:55:09 +0000 | [diff] [blame] | 848 | static int |
| 849 | is_free(int v) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 850 | { |
| 851 | if ((v & (USE | DEF_FREE)) |
| 852 | && !(v & (DEF_LOCAL | DEF_PARAM | DEF_GLOBAL))) |
| 853 | return 1; |
| 854 | if (v & DEF_FREE_CLASS) |
| 855 | return 1; |
| 856 | return 0; |
| 857 | } |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 858 | |
Jeremy Hylton | 5acc0c0 | 2001-02-02 20:01:10 +0000 | [diff] [blame] | 859 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 860 | com_error(struct compiling *c, PyObject *exc, char *msg) |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 861 | { |
Jeremy Hylton | 9f1b993 | 2001-02-28 07:07:43 +0000 | [diff] [blame] | 862 | PyObject *t = NULL, *v = NULL, *w = NULL, *line = NULL; |
| 863 | |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 864 | if (c == NULL) { |
| 865 | /* Error occurred via symtable call to |
| 866 | is_constant_false */ |
| 867 | PyErr_SetString(exc, msg); |
| 868 | return; |
| 869 | } |
Guido van Rossum | 635abd2 | 1997-01-06 22:56:52 +0000 | [diff] [blame] | 870 | c->c_errors++; |
Jeremy Hylton | 9f1b993 | 2001-02-28 07:07:43 +0000 | [diff] [blame] | 871 | if (c->c_lineno < 1 || c->c_interactive) { |
| 872 | /* Unknown line number or interactive input */ |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 873 | PyErr_SetString(exc, msg); |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 874 | return; |
| 875 | } |
Fred Drake | dcf08e0 | 2000-08-15 15:49:44 +0000 | [diff] [blame] | 876 | v = PyString_FromString(msg); |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 877 | if (v == NULL) |
| 878 | return; /* MemoryError, too bad */ |
Fred Drake | dcf08e0 | 2000-08-15 15:49:44 +0000 | [diff] [blame] | 879 | |
Jeremy Hylton | ad3d3f2 | 2001-02-28 17:47:12 +0000 | [diff] [blame] | 880 | line = PyErr_ProgramText(c->c_filename, c->c_lineno); |
Jeremy Hylton | 9f1b993 | 2001-02-28 07:07:43 +0000 | [diff] [blame] | 881 | if (line == NULL) { |
| 882 | Py_INCREF(Py_None); |
| 883 | line = Py_None; |
| 884 | } |
Martin v. Löwis | cfeb3b6 | 2002-03-03 21:30:27 +0000 | [diff] [blame] | 885 | if (exc == PyExc_SyntaxError) { |
| 886 | t = Py_BuildValue("(ziOO)", c->c_filename, c->c_lineno, |
| 887 | Py_None, line); |
| 888 | if (t == NULL) |
| 889 | goto exit; |
Raymond Hettinger | 8ae4689 | 2003-10-12 19:09:37 +0000 | [diff] [blame] | 890 | w = PyTuple_Pack(2, v, t); |
Martin v. Löwis | cfeb3b6 | 2002-03-03 21:30:27 +0000 | [diff] [blame] | 891 | if (w == NULL) |
| 892 | goto exit; |
| 893 | PyErr_SetObject(exc, w); |
| 894 | } else { |
| 895 | /* Make sure additional exceptions are printed with |
| 896 | file and line, also. */ |
| 897 | PyErr_SetObject(exc, v); |
| 898 | PyErr_SyntaxLocation(c->c_filename, c->c_lineno); |
| 899 | } |
Jeremy Hylton | 9f1b993 | 2001-02-28 07:07:43 +0000 | [diff] [blame] | 900 | exit: |
| 901 | Py_XDECREF(t); |
| 902 | Py_XDECREF(v); |
| 903 | Py_XDECREF(w); |
| 904 | Py_XDECREF(line); |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 905 | } |
| 906 | |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 907 | /* Interface to the block stack */ |
| 908 | |
| 909 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 910 | block_push(struct compiling *c, int type) |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 911 | { |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 912 | if (c->c_nblocks >= CO_MAXBLOCKS) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 913 | com_error(c, PyExc_SystemError, |
| 914 | "too many statically nested blocks"); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 915 | } |
| 916 | else { |
| 917 | c->c_block[c->c_nblocks++] = type; |
| 918 | } |
| 919 | } |
| 920 | |
| 921 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 922 | block_pop(struct compiling *c, int type) |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 923 | { |
| 924 | if (c->c_nblocks > 0) |
| 925 | c->c_nblocks--; |
| 926 | if (c->c_block[c->c_nblocks] != type && c->c_errors == 0) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 927 | com_error(c, PyExc_SystemError, "bad block pop"); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 928 | } |
| 929 | } |
| 930 | |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 931 | /* Prototype forward declarations */ |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 932 | |
Martin v. Löwis | 95292d6 | 2002-12-11 14:04:59 +0000 | [diff] [blame] | 933 | static int issue_warning(const char *, const char *, int); |
| 934 | static int com_init(struct compiling *, const char *); |
Tim Peters | dbd9ba6 | 2000-07-09 03:09:57 +0000 | [diff] [blame] | 935 | static void com_free(struct compiling *); |
| 936 | static void com_push(struct compiling *, int); |
| 937 | static void com_pop(struct compiling *, int); |
| 938 | static void com_done(struct compiling *); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 939 | static void com_node(struct compiling *, node *); |
| 940 | static void com_factor(struct compiling *, node *); |
Tim Peters | dbd9ba6 | 2000-07-09 03:09:57 +0000 | [diff] [blame] | 941 | static void com_addbyte(struct compiling *, int); |
| 942 | static void com_addint(struct compiling *, int); |
| 943 | static void com_addoparg(struct compiling *, int, int); |
| 944 | static void com_addfwref(struct compiling *, int, int *); |
| 945 | static void com_backpatch(struct compiling *, int); |
| 946 | static int com_add(struct compiling *, PyObject *, PyObject *, PyObject *); |
| 947 | static int com_addconst(struct compiling *, PyObject *); |
| 948 | static int com_addname(struct compiling *, PyObject *); |
| 949 | static void com_addopname(struct compiling *, int, node *); |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 950 | static void com_test(struct compiling *c, node *n); |
Tim Peters | dbd9ba6 | 2000-07-09 03:09:57 +0000 | [diff] [blame] | 951 | static void com_list(struct compiling *, node *, int); |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 952 | static void com_list_iter(struct compiling *, node *, node *, char *); |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 953 | static void com_gen_iter(struct compiling *, node *, node *); |
Tim Peters | dbd9ba6 | 2000-07-09 03:09:57 +0000 | [diff] [blame] | 954 | static int com_argdefs(struct compiling *, node *); |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 955 | static void com_assign(struct compiling *, node *, int, node *); |
| 956 | static void com_assign_name(struct compiling *, node *, int); |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 957 | static int com_make_closure(struct compiling *c, PyCodeObject *co); |
| 958 | |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 959 | static PyCodeObject *icompile(node *, struct compiling *); |
Martin v. Löwis | 95292d6 | 2002-12-11 14:04:59 +0000 | [diff] [blame] | 960 | static PyCodeObject *jcompile(node *, const char *, struct compiling *, |
Jeremy Hylton | 9f324e9 | 2001-03-01 22:59:14 +0000 | [diff] [blame] | 961 | PyCompilerFlags *); |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 962 | static PyObject *parsestrplus(struct compiling*, node *); |
| 963 | static PyObject *parsestr(struct compiling *, char *); |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 964 | static node *get_rawdocstring(node *); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 965 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 966 | static int get_ref_type(struct compiling *, char *); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 967 | |
| 968 | /* symtable operations */ |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 969 | static int symtable_lookup(struct symtable *st, char *name); |
Jeremy Hylton | 1955fcf | 2003-07-15 20:23:26 +0000 | [diff] [blame] | 970 | static struct symtable *symtable_build(node *, PyFutureFeatures *, |
| 971 | const char *filename); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 972 | static int symtable_load_symbols(struct compiling *); |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 973 | static struct symtable *symtable_init(void); |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 974 | static void symtable_enter_scope(struct symtable *, char *, int, int); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 975 | static int symtable_exit_scope(struct symtable *); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 976 | static int symtable_add_def(struct symtable *, char *, int); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 977 | static int symtable_add_def_o(struct symtable *, PyObject *, PyObject *, int); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 978 | |
| 979 | static void symtable_node(struct symtable *, node *); |
| 980 | static void symtable_funcdef(struct symtable *, node *); |
| 981 | static void symtable_default_args(struct symtable *, node *); |
| 982 | static void symtable_params(struct symtable *, node *); |
| 983 | static void symtable_params_fplist(struct symtable *, node *n); |
| 984 | static void symtable_global(struct symtable *, node *); |
| 985 | static void symtable_import(struct symtable *, node *); |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 986 | static void symtable_assign(struct symtable *, node *, int); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 987 | static void symtable_list_comprehension(struct symtable *, node *); |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 988 | static void symtable_generator_expression(struct symtable *, node *); |
Jeremy Hylton | 4d508ad | 2003-05-21 17:34:50 +0000 | [diff] [blame] | 989 | static void symtable_list_for(struct symtable *, node *); |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 990 | static void symtable_gen_for(struct symtable *, node *, int); |
| 991 | static void symtable_gen_iter(struct symtable *, node *); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 992 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 993 | static int symtable_update_free_vars(struct symtable *); |
| 994 | static int symtable_undo_free(struct symtable *, PyObject *, PyObject *); |
| 995 | static int symtable_check_global(struct symtable *, PyObject *, PyObject *); |
| 996 | |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 997 | /* helper */ |
| 998 | static void |
| 999 | do_pad(int pad) |
| 1000 | { |
| 1001 | int i; |
| 1002 | for (i = 0; i < pad; ++i) |
| 1003 | fprintf(stderr, " "); |
| 1004 | } |
| 1005 | |
| 1006 | static void |
| 1007 | dump(node *n, int pad, int depth) |
| 1008 | { |
| 1009 | int i; |
| 1010 | if (depth == 0) |
| 1011 | return; |
| 1012 | do_pad(pad); |
| 1013 | fprintf(stderr, "%d: %s\n", TYPE(n), STR(n)); |
| 1014 | if (depth > 0) |
| 1015 | depth--; |
| 1016 | for (i = 0; i < NCH(n); ++i) |
| 1017 | dump(CHILD(n, i), pad + 1, depth); |
| 1018 | } |
| 1019 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1020 | static int |
Martin v. Löwis | 95292d6 | 2002-12-11 14:04:59 +0000 | [diff] [blame] | 1021 | com_init(struct compiling *c, const char *filename) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1022 | { |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 1023 | memset((void *)c, '\0', sizeof(struct compiling)); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1024 | if ((c->c_code = PyString_FromStringAndSize((char *)NULL, |
| 1025 | 1000)) == NULL) |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 1026 | goto fail; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1027 | if ((c->c_consts = PyList_New(0)) == NULL) |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 1028 | goto fail; |
| 1029 | if ((c->c_const_dict = PyDict_New()) == NULL) |
| 1030 | goto fail; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1031 | if ((c->c_names = PyList_New(0)) == NULL) |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 1032 | goto fail; |
| 1033 | if ((c->c_name_dict = PyDict_New()) == NULL) |
| 1034 | goto fail; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1035 | if ((c->c_locals = PyDict_New()) == NULL) |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 1036 | goto fail; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1037 | if ((c->c_lnotab = PyString_FromStringAndSize((char *)NULL, |
| 1038 | 1000)) == NULL) |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 1039 | goto fail; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 1040 | c->c_globals = NULL; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1041 | c->c_varnames = NULL; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 1042 | c->c_freevars = NULL; |
| 1043 | c->c_cellvars = NULL; |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 1044 | c->c_nlocals = 0; |
| 1045 | c->c_argcount = 0; |
| 1046 | c->c_flags = 0; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1047 | c->c_nexti = 0; |
| 1048 | c->c_errors = 0; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1049 | c->c_infunction = 0; |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 1050 | c->c_interactive = 0; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1051 | c->c_loops = 0; |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 1052 | c->c_begin = 0; |
| 1053 | c->c_nblocks = 0; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 1054 | c->c_filename = filename; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 1055 | c->c_name = "?"; |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 1056 | c->c_lineno = 0; |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1057 | c->c_stacklevel = 0; |
| 1058 | c->c_maxstacklevel = 0; |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 1059 | c->c_firstlineno = 0; |
| 1060 | c->c_last_addr = 0; |
| 1061 | c->c_last_line = 0; |
Barry Warsaw | 174e801 | 2001-01-22 04:35:57 +0000 | [diff] [blame] | 1062 | c->c_lnotab_next = 0; |
Armin Rigo | 80d937e | 2004-03-22 17:52:53 +0000 | [diff] [blame] | 1063 | c->c_lnotab_last = 0; |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1064 | c->c_tmpname = 0; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 1065 | c->c_nested = 0; |
| 1066 | c->c_closure = 0; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1067 | c->c_symtable = NULL; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1068 | return 1; |
| 1069 | |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 1070 | fail: |
| 1071 | com_free(c); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1072 | return 0; |
| 1073 | } |
| 1074 | |
| 1075 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1076 | com_free(struct compiling *c) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1077 | { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1078 | Py_XDECREF(c->c_code); |
| 1079 | Py_XDECREF(c->c_consts); |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 1080 | Py_XDECREF(c->c_const_dict); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1081 | Py_XDECREF(c->c_names); |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 1082 | Py_XDECREF(c->c_name_dict); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1083 | Py_XDECREF(c->c_globals); |
| 1084 | Py_XDECREF(c->c_locals); |
| 1085 | Py_XDECREF(c->c_varnames); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 1086 | Py_XDECREF(c->c_freevars); |
| 1087 | Py_XDECREF(c->c_cellvars); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1088 | Py_XDECREF(c->c_lnotab); |
Jeremy Hylton | 39e2f3f | 2001-02-28 01:58:08 +0000 | [diff] [blame] | 1089 | if (c->c_future) |
Andrew MacIntyre | 80d4e2a | 2002-08-04 06:28:21 +0000 | [diff] [blame] | 1090 | PyObject_FREE((void *)c->c_future); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1091 | } |
| 1092 | |
| 1093 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1094 | com_push(struct compiling *c, int n) |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1095 | { |
| 1096 | c->c_stacklevel += n; |
Jeremy Hylton | 93a569d | 2001-10-17 13:22:22 +0000 | [diff] [blame] | 1097 | if (c->c_stacklevel > c->c_maxstacklevel) { |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1098 | c->c_maxstacklevel = c->c_stacklevel; |
Jeremy Hylton | 93a569d | 2001-10-17 13:22:22 +0000 | [diff] [blame] | 1099 | /* |
| 1100 | fprintf(stderr, "%s:%s:%d max stack nexti=%d level=%d n=%d\n", |
| 1101 | c->c_filename, c->c_name, c->c_lineno, |
| 1102 | c->c_nexti, c->c_stacklevel, n); |
| 1103 | */ |
| 1104 | } |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1105 | } |
| 1106 | |
| 1107 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1108 | com_pop(struct compiling *c, int n) |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1109 | { |
Jeremy Hylton | 93a569d | 2001-10-17 13:22:22 +0000 | [diff] [blame] | 1110 | if (c->c_stacklevel < n) |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1111 | c->c_stacklevel = 0; |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1112 | else |
| 1113 | c->c_stacklevel -= n; |
| 1114 | } |
| 1115 | |
| 1116 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1117 | com_done(struct compiling *c) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1118 | { |
| 1119 | if (c->c_code != NULL) |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1120 | _PyString_Resize(&c->c_code, c->c_nexti); |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 1121 | if (c->c_lnotab != NULL) |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1122 | _PyString_Resize(&c->c_lnotab, c->c_lnotab_next); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1123 | } |
| 1124 | |
Jeremy Hylton | 93a569d | 2001-10-17 13:22:22 +0000 | [diff] [blame] | 1125 | static int |
| 1126 | com_check_size(PyObject **s, int offset) |
| 1127 | { |
| 1128 | int len = PyString_GET_SIZE(*s); |
| 1129 | if (offset >= len) |
| 1130 | return _PyString_Resize(s, len * 2); |
| 1131 | return 0; |
| 1132 | } |
| 1133 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1134 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1135 | com_addbyte(struct compiling *c, int byte) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1136 | { |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 1137 | /*fprintf(stderr, "%3d: %3d\n", c->c_nexti, byte);*/ |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1138 | assert(byte >= 0 && byte <= 255); |
Martin v. Löwis | 7198a52 | 2002-01-01 19:59:11 +0000 | [diff] [blame] | 1139 | assert(c->c_code != 0); |
Jeremy Hylton | 93a569d | 2001-10-17 13:22:22 +0000 | [diff] [blame] | 1140 | if (com_check_size(&c->c_code, c->c_nexti)) { |
| 1141 | c->c_errors++; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1142 | return; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1143 | } |
Jeremy Hylton | 93a569d | 2001-10-17 13:22:22 +0000 | [diff] [blame] | 1144 | PyString_AS_STRING(c->c_code)[c->c_nexti++] = byte; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1145 | } |
| 1146 | |
| 1147 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1148 | com_addint(struct compiling *c, int x) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1149 | { |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 1150 | com_addbyte(c, x & 0xff); |
| 1151 | com_addbyte(c, x >> 8); /* XXX x should be positive */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1152 | } |
| 1153 | |
| 1154 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1155 | com_add_lnotab(struct compiling *c, int addr, int line) |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 1156 | { |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 1157 | char *p; |
| 1158 | if (c->c_lnotab == NULL) |
| 1159 | return; |
Jeremy Hylton | 93a569d | 2001-10-17 13:22:22 +0000 | [diff] [blame] | 1160 | if (com_check_size(&c->c_lnotab, c->c_lnotab_next + 2)) { |
| 1161 | c->c_errors++; |
| 1162 | return; |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 1163 | } |
Jeremy Hylton | 93a569d | 2001-10-17 13:22:22 +0000 | [diff] [blame] | 1164 | p = PyString_AS_STRING(c->c_lnotab) + c->c_lnotab_next; |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 1165 | *p++ = addr; |
| 1166 | *p++ = line; |
| 1167 | c->c_lnotab_next += 2; |
| 1168 | } |
| 1169 | |
| 1170 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1171 | com_set_lineno(struct compiling *c, int lineno) |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 1172 | { |
| 1173 | c->c_lineno = lineno; |
| 1174 | if (c->c_firstlineno == 0) { |
| 1175 | c->c_firstlineno = c->c_last_line = lineno; |
| 1176 | } |
| 1177 | else { |
| 1178 | int incr_addr = c->c_nexti - c->c_last_addr; |
| 1179 | int incr_line = lineno - c->c_last_line; |
Armin Rigo | 80d937e | 2004-03-22 17:52:53 +0000 | [diff] [blame] | 1180 | c->c_lnotab_last = c->c_lnotab_next; |
Tim Peters | 2a7f384 | 2001-06-09 09:26:21 +0000 | [diff] [blame] | 1181 | while (incr_addr > 255) { |
| 1182 | com_add_lnotab(c, 255, 0); |
| 1183 | incr_addr -= 255; |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 1184 | } |
Tim Peters | 2a7f384 | 2001-06-09 09:26:21 +0000 | [diff] [blame] | 1185 | while (incr_line > 255) { |
| 1186 | com_add_lnotab(c, incr_addr, 255); |
| 1187 | incr_line -=255; |
| 1188 | incr_addr = 0; |
| 1189 | } |
| 1190 | if (incr_addr > 0 || incr_line > 0) |
| 1191 | com_add_lnotab(c, incr_addr, incr_line); |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 1192 | c->c_last_addr = c->c_nexti; |
| 1193 | c->c_last_line = lineno; |
| 1194 | } |
| 1195 | } |
| 1196 | |
| 1197 | static void |
Armin Rigo | 80d937e | 2004-03-22 17:52:53 +0000 | [diff] [blame] | 1198 | com_strip_lnotab(struct compiling *c) |
| 1199 | { |
| 1200 | /* strip the last lnotab entry if no opcode were emitted. |
| 1201 | * This prevents a line number to be generated on a final |
| 1202 | * pass, like in the following example: |
| 1203 | * |
| 1204 | * if a: |
| 1205 | * print 5 |
| 1206 | * else: |
| 1207 | * pass |
| 1208 | * |
| 1209 | * Without the fix, a line trace event would be generated |
| 1210 | * on the pass even if a is true (because of the implicit |
| 1211 | * return). |
| 1212 | */ |
| 1213 | if (c->c_nexti == c->c_last_addr && c->c_lnotab_last > 0) { |
| 1214 | c->c_lnotab_next = c->c_lnotab_last; |
| 1215 | } |
| 1216 | } |
| 1217 | |
| 1218 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1219 | com_addoparg(struct compiling *c, int op, int arg) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1220 | { |
Fred Drake | ef8ace3 | 2000-08-24 00:32:09 +0000 | [diff] [blame] | 1221 | int extended_arg = arg >> 16; |
Fred Drake | ef8ace3 | 2000-08-24 00:32:09 +0000 | [diff] [blame] | 1222 | if (extended_arg){ |
| 1223 | com_addbyte(c, EXTENDED_ARG); |
| 1224 | com_addint(c, extended_arg); |
| 1225 | arg &= 0xffff; |
| 1226 | } |
Guido van Rossum | 8e793d9 | 1997-03-03 19:13:14 +0000 | [diff] [blame] | 1227 | com_addbyte(c, op); |
| 1228 | com_addint(c, arg); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1229 | } |
| 1230 | |
| 1231 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1232 | com_addfwref(struct compiling *c, int op, int *p_anchor) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1233 | { |
| 1234 | /* Compile a forward reference for backpatching */ |
| 1235 | int here; |
| 1236 | int anchor; |
| 1237 | com_addbyte(c, op); |
| 1238 | here = c->c_nexti; |
| 1239 | anchor = *p_anchor; |
| 1240 | *p_anchor = here; |
| 1241 | com_addint(c, anchor == 0 ? 0 : here - anchor); |
| 1242 | } |
| 1243 | |
| 1244 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1245 | com_backpatch(struct compiling *c, int anchor) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1246 | { |
Jeremy Hylton | 93a569d | 2001-10-17 13:22:22 +0000 | [diff] [blame] | 1247 | unsigned char *code = (unsigned char *) PyString_AS_STRING(c->c_code); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1248 | int target = c->c_nexti; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1249 | int dist; |
| 1250 | int prev; |
| 1251 | for (;;) { |
| 1252 | /* Make the JUMP instruction at anchor point to target */ |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 1253 | prev = code[anchor] + (code[anchor+1] << 8); |
| 1254 | dist = target - (anchor+2); |
| 1255 | code[anchor] = dist & 0xff; |
Fred Drake | ef8ace3 | 2000-08-24 00:32:09 +0000 | [diff] [blame] | 1256 | dist >>= 8; |
| 1257 | code[anchor+1] = dist; |
| 1258 | dist >>= 8; |
| 1259 | if (dist) { |
| 1260 | com_error(c, PyExc_SystemError, |
| 1261 | "com_backpatch: offset too large"); |
| 1262 | break; |
| 1263 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1264 | if (!prev) |
| 1265 | break; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1266 | anchor -= prev; |
| 1267 | } |
| 1268 | } |
| 1269 | |
Guido van Rossum | a9df32a | 1991-12-31 13:13:35 +0000 | [diff] [blame] | 1270 | /* Handle literals and names uniformly */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1271 | |
| 1272 | static int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1273 | com_add(struct compiling *c, PyObject *list, PyObject *dict, PyObject *v) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1274 | { |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 1275 | PyObject *w, *t, *np=NULL; |
| 1276 | long n; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1277 | |
Raymond Hettinger | 8ae4689 | 2003-10-12 19:09:37 +0000 | [diff] [blame] | 1278 | t = PyTuple_Pack(2, v, v->ob_type); |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 1279 | if (t == NULL) |
| 1280 | goto fail; |
| 1281 | w = PyDict_GetItem(dict, t); |
| 1282 | if (w != NULL) { |
| 1283 | n = PyInt_AsLong(w); |
| 1284 | } else { |
| 1285 | n = PyList_Size(list); |
| 1286 | np = PyInt_FromLong(n); |
| 1287 | if (np == NULL) |
| 1288 | goto fail; |
| 1289 | if (PyList_Append(list, v) != 0) |
| 1290 | goto fail; |
| 1291 | if (PyDict_SetItem(dict, t, np) != 0) |
| 1292 | goto fail; |
| 1293 | Py_DECREF(np); |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 1294 | } |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 1295 | Py_DECREF(t); |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 1296 | return n; |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 1297 | fail: |
| 1298 | Py_XDECREF(np); |
| 1299 | Py_XDECREF(t); |
| 1300 | c->c_errors++; |
| 1301 | return 0; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1302 | } |
| 1303 | |
| 1304 | static int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1305 | com_addconst(struct compiling *c, PyObject *v) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1306 | { |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 1307 | return com_add(c, c->c_consts, c->c_const_dict, v); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1308 | } |
| 1309 | |
| 1310 | static int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1311 | com_addname(struct compiling *c, PyObject *v) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1312 | { |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 1313 | return com_add(c, c->c_names, c->c_name_dict, v); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1314 | } |
| 1315 | |
Raymond Hettinger | 0ae0c07 | 2002-06-20 22:23:15 +0000 | [diff] [blame] | 1316 | int |
| 1317 | _Py_Mangle(char *p, char *name, char *buffer, size_t maxlen) |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 1318 | { |
Guido van Rossum | d8a6d1c | 1996-08-24 07:54:27 +0000 | [diff] [blame] | 1319 | /* Name mangling: __private becomes _classname__private. |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 1320 | This is independent from how the name is used. */ |
Guido van Rossum | 582acec | 2000-06-28 22:07:35 +0000 | [diff] [blame] | 1321 | size_t nlen, plen; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1322 | if (p == NULL || name == NULL || name[0] != '_' || name[1] != '_') |
| 1323 | return 0; |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 1324 | nlen = strlen(name); |
Guido van Rossum | d8a6d1c | 1996-08-24 07:54:27 +0000 | [diff] [blame] | 1325 | if (nlen+2 >= maxlen) |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 1326 | return 0; /* Don't mangle __extremely_long_names */ |
| 1327 | if (name[nlen-1] == '_' && name[nlen-2] == '_') |
| 1328 | return 0; /* Don't mangle __whatever__ */ |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 1329 | /* Strip leading underscores from class name */ |
| 1330 | while (*p == '_') |
| 1331 | p++; |
| 1332 | if (*p == '\0') |
| 1333 | return 0; /* Don't mangle if class is just underscores */ |
| 1334 | plen = strlen(p); |
| 1335 | if (plen + nlen >= maxlen) |
Guido van Rossum | d8a6d1c | 1996-08-24 07:54:27 +0000 | [diff] [blame] | 1336 | plen = maxlen-nlen-2; /* Truncate class name if too long */ |
| 1337 | /* buffer = "_" + p[:plen] + name # i.e. 1+plen+nlen bytes */ |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 1338 | buffer[0] = '_'; |
| 1339 | strncpy(buffer+1, p, plen); |
Guido van Rossum | d8a6d1c | 1996-08-24 07:54:27 +0000 | [diff] [blame] | 1340 | strcpy(buffer+1+plen, name); |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 1341 | return 1; |
| 1342 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1343 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1344 | static void |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1345 | com_addop_name(struct compiling *c, int op, char *name) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1346 | { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1347 | PyObject *v; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1348 | int i; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1349 | char buffer[MANGLE_LEN]; |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 1350 | |
Raymond Hettinger | 0ae0c07 | 2002-06-20 22:23:15 +0000 | [diff] [blame] | 1351 | if (_Py_Mangle(c->c_private, name, buffer, sizeof(buffer))) |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 1352 | name = buffer; |
Guido van Rossum | 7b89b6a | 1997-01-18 08:02:57 +0000 | [diff] [blame] | 1353 | if (name == NULL || (v = PyString_InternFromString(name)) == NULL) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1354 | c->c_errors++; |
| 1355 | i = 255; |
| 1356 | } |
| 1357 | else { |
| 1358 | i = com_addname(c, v); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1359 | Py_DECREF(v); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1360 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1361 | com_addoparg(c, op, i); |
| 1362 | } |
| 1363 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 1364 | #define NAME_LOCAL 0 |
| 1365 | #define NAME_GLOBAL 1 |
| 1366 | #define NAME_DEFAULT 2 |
| 1367 | #define NAME_CLOSURE 3 |
| 1368 | |
| 1369 | static int |
| 1370 | com_lookup_arg(PyObject *dict, PyObject *name) |
| 1371 | { |
| 1372 | PyObject *v = PyDict_GetItem(dict, name); |
| 1373 | if (v == NULL) |
| 1374 | return -1; |
| 1375 | else |
| 1376 | return PyInt_AS_LONG(v); |
| 1377 | } |
| 1378 | |
Guido van Rossum | 3ac99d4 | 2002-08-16 02:13:49 +0000 | [diff] [blame] | 1379 | static int |
| 1380 | none_assignment_check(struct compiling *c, char *name, int assigning) |
| 1381 | { |
| 1382 | if (name[0] == 'N' && strcmp(name, "None") == 0) { |
| 1383 | char *msg; |
| 1384 | if (assigning) |
Michael W. Hudson | 976249b | 2003-01-16 15:39:07 +0000 | [diff] [blame] | 1385 | msg = "assignment to None"; |
Guido van Rossum | 3ac99d4 | 2002-08-16 02:13:49 +0000 | [diff] [blame] | 1386 | else |
| 1387 | msg = "deleting None"; |
Raymond Hettinger | 11a70c7 | 2004-07-17 21:46:25 +0000 | [diff] [blame] | 1388 | com_error(c, PyExc_SyntaxError, msg); |
| 1389 | return -1; |
Guido van Rossum | 3ac99d4 | 2002-08-16 02:13:49 +0000 | [diff] [blame] | 1390 | } |
| 1391 | return 0; |
| 1392 | } |
| 1393 | |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1394 | static void |
| 1395 | com_addop_varname(struct compiling *c, int kind, char *name) |
| 1396 | { |
| 1397 | PyObject *v; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 1398 | int i, reftype; |
| 1399 | int scope = NAME_DEFAULT; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1400 | int op = STOP_CODE; |
| 1401 | char buffer[MANGLE_LEN]; |
| 1402 | |
Guido van Rossum | 3ac99d4 | 2002-08-16 02:13:49 +0000 | [diff] [blame] | 1403 | if (kind != VAR_LOAD && |
| 1404 | none_assignment_check(c, name, kind == VAR_STORE)) |
| 1405 | { |
Guido van Rossum | 3ac99d4 | 2002-08-16 02:13:49 +0000 | [diff] [blame] | 1406 | i = 255; |
| 1407 | goto done; |
| 1408 | } |
Raymond Hettinger | 0ae0c07 | 2002-06-20 22:23:15 +0000 | [diff] [blame] | 1409 | if (_Py_Mangle(c->c_private, name, buffer, sizeof(buffer))) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1410 | name = buffer; |
| 1411 | if (name == NULL || (v = PyString_InternFromString(name)) == NULL) { |
| 1412 | c->c_errors++; |
| 1413 | i = 255; |
| 1414 | goto done; |
Guido van Rossum | c5e9629 | 1991-12-10 13:53:51 +0000 | [diff] [blame] | 1415 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1416 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 1417 | reftype = get_ref_type(c, name); |
| 1418 | switch (reftype) { |
| 1419 | case LOCAL: |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 1420 | if (c->c_symtable->st_cur->ste_type == TYPE_FUNCTION) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 1421 | scope = NAME_LOCAL; |
| 1422 | break; |
| 1423 | case GLOBAL_EXPLICIT: |
| 1424 | scope = NAME_GLOBAL; |
| 1425 | break; |
| 1426 | case GLOBAL_IMPLICIT: |
| 1427 | if (c->c_flags & CO_OPTIMIZED) |
| 1428 | scope = NAME_GLOBAL; |
| 1429 | break; |
| 1430 | case FREE: |
| 1431 | case CELL: |
| 1432 | scope = NAME_CLOSURE; |
| 1433 | break; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1434 | } |
| 1435 | |
| 1436 | i = com_addname(c, v); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 1437 | if (scope == NAME_LOCAL) |
| 1438 | i = com_lookup_arg(c->c_locals, v); |
| 1439 | else if (reftype == FREE) |
| 1440 | i = com_lookup_arg(c->c_freevars, v); |
| 1441 | else if (reftype == CELL) |
| 1442 | i = com_lookup_arg(c->c_cellvars, v); |
| 1443 | if (i == -1) { |
| 1444 | c->c_errors++; /* XXX no exception set */ |
| 1445 | i = 255; |
| 1446 | goto done; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1447 | } |
| 1448 | Py_DECREF(v); |
| 1449 | |
| 1450 | switch (kind) { |
| 1451 | case VAR_LOAD: |
| 1452 | switch (scope) { |
| 1453 | case NAME_LOCAL: |
| 1454 | op = LOAD_FAST; |
| 1455 | break; |
| 1456 | case NAME_GLOBAL: |
| 1457 | op = LOAD_GLOBAL; |
| 1458 | break; |
| 1459 | case NAME_DEFAULT: |
| 1460 | op = LOAD_NAME; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 1461 | break; |
| 1462 | case NAME_CLOSURE: |
| 1463 | op = LOAD_DEREF; |
| 1464 | break; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1465 | } |
| 1466 | break; |
| 1467 | case VAR_STORE: |
| 1468 | switch (scope) { |
| 1469 | case NAME_LOCAL: |
| 1470 | op = STORE_FAST; |
| 1471 | break; |
| 1472 | case NAME_GLOBAL: |
| 1473 | op = STORE_GLOBAL; |
| 1474 | break; |
| 1475 | case NAME_DEFAULT: |
| 1476 | op = STORE_NAME; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 1477 | break; |
| 1478 | case NAME_CLOSURE: |
| 1479 | op = STORE_DEREF; |
| 1480 | break; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1481 | } |
| 1482 | break; |
| 1483 | case VAR_DELETE: |
| 1484 | switch (scope) { |
| 1485 | case NAME_LOCAL: |
| 1486 | op = DELETE_FAST; |
| 1487 | break; |
| 1488 | case NAME_GLOBAL: |
| 1489 | op = DELETE_GLOBAL; |
| 1490 | break; |
| 1491 | case NAME_DEFAULT: |
| 1492 | op = DELETE_NAME; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 1493 | break; |
| 1494 | case NAME_CLOSURE: { |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 1495 | char buf[500]; |
Barry Warsaw | 8f6d868 | 2001-11-28 21:10:39 +0000 | [diff] [blame] | 1496 | PyOS_snprintf(buf, sizeof(buf), |
| 1497 | DEL_CLOSURE_ERROR, name); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 1498 | com_error(c, PyExc_SyntaxError, buf); |
| 1499 | i = 255; |
| 1500 | break; |
| 1501 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1502 | } |
| 1503 | break; |
| 1504 | } |
| 1505 | done: |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1506 | com_addoparg(c, op, i); |
| 1507 | } |
| 1508 | |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 1509 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1510 | com_addopname(struct compiling *c, int op, node *n) |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 1511 | { |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 1512 | char *name; |
| 1513 | char buffer[1000]; |
| 1514 | /* XXX it is possible to write this code without the 1000 |
| 1515 | chars on the total length of dotted names, I just can't be |
| 1516 | bothered right now */ |
| 1517 | if (TYPE(n) == STAR) |
| 1518 | name = "*"; |
| 1519 | else if (TYPE(n) == dotted_name) { |
| 1520 | char *p = buffer; |
| 1521 | int i; |
| 1522 | name = buffer; |
| 1523 | for (i = 0; i < NCH(n); i += 2) { |
| 1524 | char *s = STR(CHILD(n, i)); |
| 1525 | if (p + strlen(s) > buffer + (sizeof buffer) - 2) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1526 | com_error(c, PyExc_MemoryError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 1527 | "dotted_name too long"); |
Guido van Rossum | d9dfaf5 | 1995-02-17 15:04:57 +0000 | [diff] [blame] | 1528 | name = NULL; |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 1529 | break; |
| 1530 | } |
| 1531 | if (p != buffer) |
| 1532 | *p++ = '.'; |
| 1533 | strcpy(p, s); |
| 1534 | p = strchr(p, '\0'); |
| 1535 | } |
| 1536 | } |
| 1537 | else { |
| 1538 | REQ(n, NAME); |
| 1539 | name = STR(n); |
| 1540 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1541 | com_addop_name(c, op, name); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 1542 | } |
| 1543 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1544 | static PyObject * |
Guido van Rossum | b081e0c | 2002-08-16 01:57:32 +0000 | [diff] [blame] | 1545 | parsenumber(struct compiling *c, char *s) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1546 | { |
Guido van Rossum | c5e9629 | 1991-12-10 13:53:51 +0000 | [diff] [blame] | 1547 | char *end; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1548 | long x; |
Guido van Rossum | 0ae748d | 1997-02-14 22:58:07 +0000 | [diff] [blame] | 1549 | double dx; |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 1550 | #ifndef WITHOUT_COMPLEX |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 1551 | int imflag; |
| 1552 | #endif |
| 1553 | |
Guido van Rossum | 282914b | 1991-04-04 10:42:56 +0000 | [diff] [blame] | 1554 | errno = 0; |
Guido van Rossum | c5e9629 | 1991-12-10 13:53:51 +0000 | [diff] [blame] | 1555 | end = s + strlen(s) - 1; |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 1556 | #ifndef WITHOUT_COMPLEX |
Guido van Rossum | 15ad9a6 | 1996-01-26 20:53:56 +0000 | [diff] [blame] | 1557 | imflag = *end == 'j' || *end == 'J'; |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 1558 | #endif |
Guido van Rossum | f1aeab7 | 1992-03-27 17:28:26 +0000 | [diff] [blame] | 1559 | if (*end == 'l' || *end == 'L') |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1560 | return PyLong_FromString(s, (char **)0, 0); |
Guido van Rossum | 078151d | 2002-08-11 04:24:12 +0000 | [diff] [blame] | 1561 | if (s[0] == '0') { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1562 | x = (long) PyOS_strtoul(s, &end, 0); |
Guido van Rossum | 078151d | 2002-08-11 04:24:12 +0000 | [diff] [blame] | 1563 | if (x < 0 && errno == 0) { |
Guido van Rossum | 6c9e130 | 2003-11-29 23:52:13 +0000 | [diff] [blame] | 1564 | return PyLong_FromString(s, (char **)0, 0); |
Guido van Rossum | 078151d | 2002-08-11 04:24:12 +0000 | [diff] [blame] | 1565 | } |
| 1566 | } |
Guido van Rossum | acbefef | 1992-01-19 16:33:51 +0000 | [diff] [blame] | 1567 | else |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1568 | x = PyOS_strtol(s, &end, 0); |
Guido van Rossum | 282914b | 1991-04-04 10:42:56 +0000 | [diff] [blame] | 1569 | if (*end == '\0') { |
Jeremy Hylton | 71b6af9 | 2001-08-27 19:45:25 +0000 | [diff] [blame] | 1570 | if (errno != 0) |
| 1571 | return PyLong_FromString(s, (char **)0, 0); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1572 | return PyInt_FromLong(x); |
Guido van Rossum | 282914b | 1991-04-04 10:42:56 +0000 | [diff] [blame] | 1573 | } |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 1574 | /* XXX Huge floats may silently fail */ |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 1575 | #ifndef WITHOUT_COMPLEX |
| 1576 | if (imflag) { |
Guido van Rossum | b081e0c | 2002-08-16 01:57:32 +0000 | [diff] [blame] | 1577 | Py_complex z; |
| 1578 | z.real = 0.; |
Guido van Rossum | 0ae748d | 1997-02-14 22:58:07 +0000 | [diff] [blame] | 1579 | PyFPE_START_PROTECT("atof", return 0) |
Martin v. Löwis | 737ea82 | 2004-06-08 18:52:54 +0000 | [diff] [blame] | 1580 | z.imag = PyOS_ascii_atof(s); |
Guido van Rossum | b081e0c | 2002-08-16 01:57:32 +0000 | [diff] [blame] | 1581 | PyFPE_END_PROTECT(z) |
| 1582 | return PyComplex_FromCComplex(z); |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 1583 | } |
Guido van Rossum | ac1fc95 | 1997-10-08 15:23:55 +0000 | [diff] [blame] | 1584 | else |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 1585 | #endif |
Guido van Rossum | ac1fc95 | 1997-10-08 15:23:55 +0000 | [diff] [blame] | 1586 | { |
Guido van Rossum | 0ae748d | 1997-02-14 22:58:07 +0000 | [diff] [blame] | 1587 | PyFPE_START_PROTECT("atof", return 0) |
Martin v. Löwis | 737ea82 | 2004-06-08 18:52:54 +0000 | [diff] [blame] | 1588 | dx = PyOS_ascii_atof(s); |
Guido van Rossum | 45b8391 | 1997-03-14 04:32:50 +0000 | [diff] [blame] | 1589 | PyFPE_END_PROTECT(dx) |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1590 | return PyFloat_FromDouble(dx); |
Guido van Rossum | 0ae748d | 1997-02-14 22:58:07 +0000 | [diff] [blame] | 1591 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1592 | } |
| 1593 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1594 | static PyObject * |
Martin v. Löwis | 00f1e3f | 2002-08-04 17:29:52 +0000 | [diff] [blame] | 1595 | decode_utf8(char **sPtr, char *end, char* encoding) |
| 1596 | { |
Martin v. Löwis | 019934b | 2002-08-07 12:33:18 +0000 | [diff] [blame] | 1597 | #ifndef Py_USING_UNICODE |
Martin v. Löwis | 2863c10 | 2002-08-07 15:18:57 +0000 | [diff] [blame] | 1598 | Py_FatalError("decode_utf8 should not be called in this build."); |
| 1599 | return NULL; |
Martin v. Löwis | 019934b | 2002-08-07 12:33:18 +0000 | [diff] [blame] | 1600 | #else |
Martin v. Löwis | 00f1e3f | 2002-08-04 17:29:52 +0000 | [diff] [blame] | 1601 | PyObject *u, *v; |
| 1602 | char *s, *t; |
| 1603 | t = s = *sPtr; |
| 1604 | /* while (s < end && *s != '\\') s++; */ /* inefficient for u".." */ |
| 1605 | while (s < end && (*s & 0x80)) s++; |
| 1606 | *sPtr = s; |
| 1607 | u = PyUnicode_DecodeUTF8(t, s - t, NULL); |
| 1608 | if (u == NULL) |
| 1609 | return NULL; |
| 1610 | v = PyUnicode_AsEncodedString(u, encoding, NULL); |
| 1611 | Py_DECREF(u); |
| 1612 | return v; |
Martin v. Löwis | 019934b | 2002-08-07 12:33:18 +0000 | [diff] [blame] | 1613 | #endif |
Martin v. Löwis | 00f1e3f | 2002-08-04 17:29:52 +0000 | [diff] [blame] | 1614 | } |
| 1615 | |
Jeremy Hylton | accb62b | 2002-12-31 18:17:44 +0000 | [diff] [blame] | 1616 | /* compiler.transformer.Transformer.decode_literal depends on what |
| 1617 | might seem like minor details of this function -- changes here |
| 1618 | must be reflected there. */ |
Martin v. Löwis | 00f1e3f | 2002-08-04 17:29:52 +0000 | [diff] [blame] | 1619 | static PyObject * |
Guido van Rossum | b081e0c | 2002-08-16 01:57:32 +0000 | [diff] [blame] | 1620 | parsestr(struct compiling *c, char *s) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1621 | { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1622 | PyObject *v; |
Guido van Rossum | 582acec | 2000-06-28 22:07:35 +0000 | [diff] [blame] | 1623 | size_t len; |
Martin v. Löwis | 8a8da79 | 2002-08-14 07:46:28 +0000 | [diff] [blame] | 1624 | int quote = *s; |
Guido van Rossum | 5aa88f0 | 2000-03-10 23:01:36 +0000 | [diff] [blame] | 1625 | int rawmode = 0; |
Guido van Rossum | b081e0c | 2002-08-16 01:57:32 +0000 | [diff] [blame] | 1626 | char* encoding = ((c == NULL) ? NULL : c->c_encoding); |
Martin v. Löwis | 00f1e3f | 2002-08-04 17:29:52 +0000 | [diff] [blame] | 1627 | int need_encoding; |
Guido van Rossum | 5aa88f0 | 2000-03-10 23:01:36 +0000 | [diff] [blame] | 1628 | int unicode = 0; |
Guido van Rossum | 05459c5 | 2002-05-28 18:47:29 +0000 | [diff] [blame] | 1629 | |
Guido van Rossum | 5aa88f0 | 2000-03-10 23:01:36 +0000 | [diff] [blame] | 1630 | if (isalpha(quote) || quote == '_') { |
| 1631 | if (quote == 'u' || quote == 'U') { |
| 1632 | quote = *++s; |
| 1633 | unicode = 1; |
| 1634 | } |
| 1635 | if (quote == 'r' || quote == 'R') { |
| 1636 | quote = *++s; |
| 1637 | rawmode = 1; |
| 1638 | } |
| 1639 | } |
Guido van Rossum | 8054fad | 1993-10-26 15:19:44 +0000 | [diff] [blame] | 1640 | if (quote != '\'' && quote != '\"') { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1641 | PyErr_BadInternalCall(); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1642 | return NULL; |
| 1643 | } |
| 1644 | s++; |
| 1645 | len = strlen(s); |
Guido van Rossum | 582acec | 2000-06-28 22:07:35 +0000 | [diff] [blame] | 1646 | if (len > INT_MAX) { |
Guido van Rossum | b081e0c | 2002-08-16 01:57:32 +0000 | [diff] [blame] | 1647 | com_error(c, PyExc_OverflowError, |
Martin v. Löwis | cfeb3b6 | 2002-03-03 21:30:27 +0000 | [diff] [blame] | 1648 | "string to parse is too long"); |
Guido van Rossum | 582acec | 2000-06-28 22:07:35 +0000 | [diff] [blame] | 1649 | return NULL; |
| 1650 | } |
Guido van Rossum | 8054fad | 1993-10-26 15:19:44 +0000 | [diff] [blame] | 1651 | if (s[--len] != quote) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1652 | PyErr_BadInternalCall(); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1653 | return NULL; |
| 1654 | } |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 1655 | if (len >= 4 && s[0] == quote && s[1] == quote) { |
| 1656 | s += 2; |
| 1657 | len -= 2; |
| 1658 | if (s[--len] != quote || s[--len] != quote) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1659 | PyErr_BadInternalCall(); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 1660 | return NULL; |
| 1661 | } |
| 1662 | } |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 1663 | #ifdef Py_USING_UNICODE |
Guido van Rossum | fdc8bdb | 2000-05-01 17:54:56 +0000 | [diff] [blame] | 1664 | if (unicode || Py_UnicodeFlag) { |
Martin v. Löwis | 00f1e3f | 2002-08-04 17:29:52 +0000 | [diff] [blame] | 1665 | PyObject *u, *w; |
Walter Dörwald | 4c6c765 | 2002-11-21 20:13:40 +0000 | [diff] [blame] | 1666 | char *buf; |
| 1667 | char *p; |
| 1668 | char *end; |
Martin v. Löwis | 00f1e3f | 2002-08-04 17:29:52 +0000 | [diff] [blame] | 1669 | if (encoding == NULL) { |
| 1670 | buf = s; |
| 1671 | u = NULL; |
| 1672 | } else if (strcmp(encoding, "iso-8859-1") == 0) { |
| 1673 | buf = s; |
| 1674 | u = NULL; |
| 1675 | } else { |
| 1676 | /* "\XX" may become "\u005c\uHHLL" (12 bytes) */ |
| 1677 | u = PyString_FromStringAndSize((char *)NULL, len * 4); |
| 1678 | if (u == NULL) |
| 1679 | return NULL; |
| 1680 | p = buf = PyString_AsString(u); |
| 1681 | end = s + len; |
| 1682 | while (s < end) { |
| 1683 | if (*s == '\\') { |
| 1684 | *p++ = *s++; |
| 1685 | if (*s & 0x80) { |
| 1686 | strcpy(p, "u005c"); |
| 1687 | p += 5; |
| 1688 | } |
| 1689 | } |
| 1690 | if (*s & 0x80) { /* XXX inefficient */ |
| 1691 | char *r; |
| 1692 | int rn, i; |
| 1693 | w = decode_utf8(&s, end, "utf-16-be"); |
| 1694 | if (w == NULL) { |
| 1695 | Py_DECREF(u); |
| 1696 | return NULL; |
| 1697 | } |
| 1698 | r = PyString_AsString(w); |
| 1699 | rn = PyString_Size(w); |
| 1700 | assert(rn % 2 == 0); |
| 1701 | for (i = 0; i < rn; i += 2) { |
| 1702 | sprintf(p, "\\u%02x%02x", |
| 1703 | r[i + 0] & 0xFF, |
| 1704 | r[i + 1] & 0xFF); |
| 1705 | p += 6; |
| 1706 | } |
| 1707 | Py_DECREF(w); |
| 1708 | } else { |
| 1709 | *p++ = *s++; |
| 1710 | } |
| 1711 | } |
| 1712 | len = p - buf; |
| 1713 | } |
Guido van Rossum | 5aa88f0 | 2000-03-10 23:01:36 +0000 | [diff] [blame] | 1714 | if (rawmode) |
Martin v. Löwis | 00f1e3f | 2002-08-04 17:29:52 +0000 | [diff] [blame] | 1715 | v = PyUnicode_DecodeRawUnicodeEscape(buf, len, NULL); |
Guido van Rossum | 5aa88f0 | 2000-03-10 23:01:36 +0000 | [diff] [blame] | 1716 | else |
Martin v. Löwis | 00f1e3f | 2002-08-04 17:29:52 +0000 | [diff] [blame] | 1717 | v = PyUnicode_DecodeUnicodeEscape(buf, len, NULL); |
| 1718 | Py_XDECREF(u); |
Martin v. Löwis | cfeb3b6 | 2002-03-03 21:30:27 +0000 | [diff] [blame] | 1719 | if (v == NULL) |
Guido van Rossum | b081e0c | 2002-08-16 01:57:32 +0000 | [diff] [blame] | 1720 | PyErr_SyntaxLocation(c->c_filename, c->c_lineno); |
Martin v. Löwis | cfeb3b6 | 2002-03-03 21:30:27 +0000 | [diff] [blame] | 1721 | return v; |
| 1722 | |
Guido van Rossum | 5aa88f0 | 2000-03-10 23:01:36 +0000 | [diff] [blame] | 1723 | } |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 1724 | #endif |
Martin v. Löwis | 00f1e3f | 2002-08-04 17:29:52 +0000 | [diff] [blame] | 1725 | need_encoding = (encoding != NULL && |
| 1726 | strcmp(encoding, "utf-8") != 0 && |
| 1727 | strcmp(encoding, "iso-8859-1") != 0); |
| 1728 | if (rawmode || strchr(s, '\\') == NULL) { |
| 1729 | if (need_encoding) { |
Martin v. Löwis | 019934b | 2002-08-07 12:33:18 +0000 | [diff] [blame] | 1730 | #ifndef Py_USING_UNICODE |
| 1731 | /* This should not happen - we never see any other |
| 1732 | encoding. */ |
Martin v. Löwis | 2863c10 | 2002-08-07 15:18:57 +0000 | [diff] [blame] | 1733 | Py_FatalError("cannot deal with encodings in this build."); |
Martin v. Löwis | 019934b | 2002-08-07 12:33:18 +0000 | [diff] [blame] | 1734 | #else |
Martin v. Löwis | 00f1e3f | 2002-08-04 17:29:52 +0000 | [diff] [blame] | 1735 | PyObject* u = PyUnicode_DecodeUTF8(s, len, NULL); |
| 1736 | if (u == NULL) |
| 1737 | return NULL; |
| 1738 | v = PyUnicode_AsEncodedString(u, encoding, NULL); |
| 1739 | Py_DECREF(u); |
| 1740 | return v; |
Martin v. Löwis | 019934b | 2002-08-07 12:33:18 +0000 | [diff] [blame] | 1741 | #endif |
Martin v. Löwis | 00f1e3f | 2002-08-04 17:29:52 +0000 | [diff] [blame] | 1742 | } else { |
| 1743 | return PyString_FromStringAndSize(s, len); |
| 1744 | } |
| 1745 | } |
Martin v. Löwis | 8a8da79 | 2002-08-14 07:46:28 +0000 | [diff] [blame] | 1746 | |
| 1747 | v = PyString_DecodeEscape(s, len, NULL, unicode, |
| 1748 | need_encoding ? encoding : NULL); |
Fredrik Lundh | 1fa0b89 | 2000-09-02 20:11:27 +0000 | [diff] [blame] | 1749 | if (v == NULL) |
Guido van Rossum | b081e0c | 2002-08-16 01:57:32 +0000 | [diff] [blame] | 1750 | PyErr_SyntaxLocation(c->c_filename, c->c_lineno); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1751 | return v; |
| 1752 | } |
| 1753 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1754 | static PyObject * |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 1755 | parsestrplus(struct compiling* c, node *n) |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 1756 | { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1757 | PyObject *v; |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 1758 | int i; |
| 1759 | REQ(CHILD(n, 0), STRING); |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 1760 | if ((v = parsestr(c, STR(CHILD(n, 0)))) != NULL) { |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 1761 | /* String literal concatenation */ |
Fred Drake | 4e998bc | 2000-04-13 14:10:44 +0000 | [diff] [blame] | 1762 | for (i = 1; i < NCH(n); i++) { |
| 1763 | PyObject *s; |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 1764 | s = parsestr(c, STR(CHILD(n, i))); |
Fred Drake | 4e998bc | 2000-04-13 14:10:44 +0000 | [diff] [blame] | 1765 | if (s == NULL) |
| 1766 | goto onError; |
| 1767 | if (PyString_Check(v) && PyString_Check(s)) { |
| 1768 | PyString_ConcatAndDel(&v, s); |
| 1769 | if (v == NULL) |
| 1770 | goto onError; |
| 1771 | } |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 1772 | #ifdef Py_USING_UNICODE |
Fred Drake | 4e998bc | 2000-04-13 14:10:44 +0000 | [diff] [blame] | 1773 | else { |
| 1774 | PyObject *temp; |
| 1775 | temp = PyUnicode_Concat(v, s); |
| 1776 | Py_DECREF(s); |
| 1777 | if (temp == NULL) |
| 1778 | goto onError; |
| 1779 | Py_DECREF(v); |
| 1780 | v = temp; |
| 1781 | } |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 1782 | #endif |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 1783 | } |
| 1784 | } |
| 1785 | return v; |
Fred Drake | 4e998bc | 2000-04-13 14:10:44 +0000 | [diff] [blame] | 1786 | |
| 1787 | onError: |
| 1788 | Py_XDECREF(v); |
| 1789 | return NULL; |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 1790 | } |
| 1791 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1792 | static void |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1793 | com_list_for(struct compiling *c, node *n, node *e, char *t) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1794 | { |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1795 | int anchor = 0; |
| 1796 | int save_begin = c->c_begin; |
| 1797 | |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 1798 | /* list_for: for v in expr [list_iter] */ |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1799 | com_node(c, CHILD(n, 3)); /* expr */ |
Guido van Rossum | 59d1d2b | 2001-04-20 19:13:02 +0000 | [diff] [blame] | 1800 | com_addbyte(c, GET_ITER); |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1801 | c->c_begin = c->c_nexti; |
Guido van Rossum | 59d1d2b | 2001-04-20 19:13:02 +0000 | [diff] [blame] | 1802 | com_addfwref(c, FOR_ITER, &anchor); |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1803 | com_push(c, 1); |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 1804 | com_assign(c, CHILD(n, 1), OP_ASSIGN, NULL); |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1805 | c->c_loops++; |
| 1806 | com_list_iter(c, n, e, t); |
| 1807 | c->c_loops--; |
| 1808 | com_addoparg(c, JUMP_ABSOLUTE, c->c_begin); |
| 1809 | c->c_begin = save_begin; |
| 1810 | com_backpatch(c, anchor); |
Guido van Rossum | 59d1d2b | 2001-04-20 19:13:02 +0000 | [diff] [blame] | 1811 | com_pop(c, 1); /* FOR_ITER has popped this */ |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1812 | } |
| 1813 | |
| 1814 | static void |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 1815 | com_gen_for(struct compiling *c, node *n, node *t, int is_outmost) |
| 1816 | { |
| 1817 | int break_anchor = 0; |
| 1818 | int anchor = 0; |
| 1819 | int save_begin = c->c_begin; |
| 1820 | |
| 1821 | REQ(n, gen_for); |
| 1822 | /* gen_for: for v in test [gen_iter] */ |
| 1823 | |
| 1824 | com_addfwref(c, SETUP_LOOP, &break_anchor); |
| 1825 | block_push(c, SETUP_LOOP); |
| 1826 | |
| 1827 | if (is_outmost) { |
| 1828 | com_addop_varname(c, VAR_LOAD, "[outmost-iterable]"); |
| 1829 | com_push(c, 1); |
| 1830 | } |
| 1831 | else { |
| 1832 | com_node(c, CHILD(n, 3)); |
| 1833 | com_addbyte(c, GET_ITER); |
| 1834 | } |
| 1835 | |
| 1836 | c->c_begin = c->c_nexti; |
| 1837 | com_set_lineno(c, c->c_last_line); |
| 1838 | com_addfwref(c, FOR_ITER, &anchor); |
| 1839 | com_push(c, 1); |
| 1840 | com_assign(c, CHILD(n, 1), OP_ASSIGN, NULL); |
| 1841 | |
| 1842 | if (NCH(n) == 5) |
| 1843 | com_gen_iter(c, CHILD(n, 4), t); |
| 1844 | else { |
| 1845 | com_test(c, t); |
| 1846 | com_addbyte(c, YIELD_VALUE); |
| 1847 | com_pop(c, 1); |
| 1848 | } |
| 1849 | |
| 1850 | com_addoparg(c, JUMP_ABSOLUTE, c->c_begin); |
| 1851 | c->c_begin = save_begin; |
| 1852 | |
| 1853 | com_backpatch(c, anchor); |
| 1854 | com_pop(c, 1); /* FOR_ITER has popped this */ |
| 1855 | com_addbyte(c, POP_BLOCK); |
| 1856 | block_pop(c, SETUP_LOOP); |
| 1857 | com_backpatch(c, break_anchor); |
| 1858 | } |
| 1859 | |
| 1860 | static void |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1861 | com_list_if(struct compiling *c, node *n, node *e, char *t) |
| 1862 | { |
| 1863 | int anchor = 0; |
| 1864 | int a = 0; |
| 1865 | /* list_iter: 'if' test [list_iter] */ |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1866 | com_node(c, CHILD(n, 1)); |
| 1867 | com_addfwref(c, JUMP_IF_FALSE, &a); |
| 1868 | com_addbyte(c, POP_TOP); |
| 1869 | com_pop(c, 1); |
| 1870 | com_list_iter(c, n, e, t); |
| 1871 | com_addfwref(c, JUMP_FORWARD, &anchor); |
| 1872 | com_backpatch(c, a); |
| 1873 | /* We jump here with an extra entry which we now pop */ |
| 1874 | com_addbyte(c, POP_TOP); |
| 1875 | com_backpatch(c, anchor); |
| 1876 | } |
| 1877 | |
| 1878 | static void |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 1879 | com_gen_if(struct compiling *c, node *n, node *t) |
| 1880 | { |
| 1881 | /* gen_if: 'if' test [gen_iter] */ |
| 1882 | int anchor = 0; |
| 1883 | int a=0; |
| 1884 | |
| 1885 | com_node(c, CHILD(n, 1)); |
| 1886 | com_addfwref(c, JUMP_IF_FALSE, &a); |
| 1887 | com_addbyte(c, POP_TOP); |
| 1888 | com_pop(c, 1); |
| 1889 | |
| 1890 | if (NCH(n) == 3) |
| 1891 | com_gen_iter(c, CHILD(n, 2), t); |
| 1892 | else { |
| 1893 | com_test(c, t); |
| 1894 | com_addbyte(c, YIELD_VALUE); |
| 1895 | com_pop(c, 1); |
| 1896 | } |
| 1897 | com_addfwref(c, JUMP_FORWARD, &anchor); |
| 1898 | com_backpatch(c, a); |
| 1899 | /* We jump here with an extra entry which we now pop */ |
| 1900 | com_addbyte(c, POP_TOP); |
| 1901 | com_backpatch(c, anchor); |
| 1902 | } |
| 1903 | |
| 1904 | static void |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1905 | com_list_iter(struct compiling *c, |
| 1906 | node *p, /* parent of list_iter node */ |
| 1907 | node *e, /* element expression node */ |
| 1908 | char *t /* name of result list temp local */) |
| 1909 | { |
| 1910 | /* list_iter is the last child in a listmaker, list_for, or list_if */ |
| 1911 | node *n = CHILD(p, NCH(p)-1); |
| 1912 | if (TYPE(n) == list_iter) { |
| 1913 | n = CHILD(n, 0); |
| 1914 | switch (TYPE(n)) { |
| 1915 | case list_for: |
| 1916 | com_list_for(c, n, e, t); |
| 1917 | break; |
| 1918 | case list_if: |
| 1919 | com_list_if(c, n, e, t); |
| 1920 | break; |
| 1921 | default: |
| 1922 | com_error(c, PyExc_SystemError, |
| 1923 | "invalid list_iter node type"); |
| 1924 | } |
| 1925 | } |
| 1926 | else { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1927 | com_addop_varname(c, VAR_LOAD, t); |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1928 | com_push(c, 1); |
| 1929 | com_node(c, e); |
Raymond Hettinger | dd80f76 | 2004-03-07 07:31:06 +0000 | [diff] [blame] | 1930 | com_addbyte(c, LIST_APPEND); |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1931 | com_pop(c, 2); |
| 1932 | } |
| 1933 | } |
| 1934 | |
| 1935 | static void |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 1936 | com_gen_iter(struct compiling *c, node *n, node *t) |
| 1937 | { |
| 1938 | /* gen_iter: gen_for | gen_if */ |
| 1939 | node *ch; |
| 1940 | REQ(n, gen_iter); |
| 1941 | |
| 1942 | ch = CHILD(n, 0); |
| 1943 | |
| 1944 | switch (TYPE(ch)) { |
| 1945 | case gen_for: |
| 1946 | com_gen_for(c, ch, t, 0); |
| 1947 | break; |
| 1948 | case gen_if: |
| 1949 | com_gen_if(c, ch, t); |
| 1950 | break; |
| 1951 | default: |
| 1952 | com_error(c, PyExc_SystemError, |
| 1953 | "invalid gen_iter node type"); |
| 1954 | } |
| 1955 | } |
| 1956 | |
| 1957 | static void |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1958 | com_list_comprehension(struct compiling *c, node *n) |
| 1959 | { |
Skip Montanaro | 46dfa5f | 2000-08-22 02:43:07 +0000 | [diff] [blame] | 1960 | /* listmaker: test list_for */ |
Barry Warsaw | 8f6d868 | 2001-11-28 21:10:39 +0000 | [diff] [blame] | 1961 | char tmpname[30]; |
Jeremy Hylton | 4d508ad | 2003-05-21 17:34:50 +0000 | [diff] [blame] | 1962 | |
| 1963 | REQ(n, listmaker); |
Barry Warsaw | 8f6d868 | 2001-11-28 21:10:39 +0000 | [diff] [blame] | 1964 | PyOS_snprintf(tmpname, sizeof(tmpname), "_[%d]", ++c->c_tmpname); |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1965 | com_addoparg(c, BUILD_LIST, 0); |
| 1966 | com_addbyte(c, DUP_TOP); /* leave the result on the stack */ |
| 1967 | com_push(c, 2); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1968 | com_addop_varname(c, VAR_STORE, tmpname); |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1969 | com_pop(c, 1); |
Skip Montanaro | 46dfa5f | 2000-08-22 02:43:07 +0000 | [diff] [blame] | 1970 | com_list_for(c, CHILD(n, 1), CHILD(n, 0), tmpname); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1971 | com_addop_varname(c, VAR_DELETE, tmpname); |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1972 | --c->c_tmpname; |
| 1973 | } |
| 1974 | |
| 1975 | static void |
| 1976 | com_listmaker(struct compiling *c, node *n) |
| 1977 | { |
Skip Montanaro | 46dfa5f | 2000-08-22 02:43:07 +0000 | [diff] [blame] | 1978 | /* listmaker: test ( list_for | (',' test)* [','] ) */ |
| 1979 | if (NCH(n) > 1 && TYPE(CHILD(n, 1)) == list_for) |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1980 | com_list_comprehension(c, n); |
| 1981 | else { |
| 1982 | int len = 0; |
| 1983 | int i; |
| 1984 | for (i = 0; i < NCH(n); i += 2, len++) |
| 1985 | com_node(c, CHILD(n, i)); |
| 1986 | com_addoparg(c, BUILD_LIST, len); |
| 1987 | com_pop(c, len-1); |
| 1988 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1989 | } |
| 1990 | |
| 1991 | static void |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 1992 | com_generator_expression(struct compiling *c, node *n) |
| 1993 | { |
| 1994 | /* testlist_gexp: test gen_for */ |
| 1995 | /* argument: test gen_for */ |
| 1996 | PyCodeObject *co; |
| 1997 | |
| 1998 | REQ(CHILD(n, 0), test); |
| 1999 | REQ(CHILD(n, 1), gen_for); |
| 2000 | |
| 2001 | symtable_enter_scope(c->c_symtable, "<genexpr>", TYPE(n), |
| 2002 | n->n_lineno); |
| 2003 | co = icompile(n, c); |
| 2004 | symtable_exit_scope(c->c_symtable); |
| 2005 | |
| 2006 | if (co == NULL) |
| 2007 | c->c_errors++; |
| 2008 | else { |
| 2009 | int closure = com_make_closure(c, co); |
| 2010 | int i = com_addconst(c, (PyObject *)co); |
| 2011 | |
| 2012 | com_addoparg(c, LOAD_CONST, i); |
| 2013 | com_push(c, 1); |
| 2014 | if (closure) |
| 2015 | com_addoparg(c, MAKE_CLOSURE, 0); |
| 2016 | else |
| 2017 | com_addoparg(c, MAKE_FUNCTION, 0); |
| 2018 | |
| 2019 | com_test(c, CHILD(CHILD(n, 1), 3)); |
| 2020 | com_addbyte(c, GET_ITER); |
| 2021 | com_addoparg(c, CALL_FUNCTION, 1); |
| 2022 | com_pop(c, 1); |
| 2023 | |
| 2024 | Py_DECREF(co); |
| 2025 | } |
| 2026 | } |
| 2027 | |
| 2028 | static void |
| 2029 | com_testlist_gexp(struct compiling *c, node *n) |
| 2030 | { |
| 2031 | /* testlist_gexp: test ( gen_for | (',' test)* [','] ) */ |
| 2032 | if (NCH(n) > 1 && TYPE(CHILD(n, 1)) == gen_for) |
| 2033 | com_generator_expression(c, n); |
| 2034 | else com_list(c, n, 0); |
| 2035 | } |
| 2036 | |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 2037 | |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 2038 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2039 | com_dictmaker(struct compiling *c, node *n) |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 2040 | { |
| 2041 | int i; |
| 2042 | /* dictmaker: test ':' test (',' test ':' value)* [','] */ |
| 2043 | for (i = 0; i+2 < NCH(n); i += 4) { |
| 2044 | /* We must arrange things just right for STORE_SUBSCR. |
| 2045 | It wants the stack to look like (value) (dict) (key) */ |
| 2046 | com_addbyte(c, DUP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2047 | com_push(c, 1); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 2048 | com_node(c, CHILD(n, i)); /* key */ |
Gustavo Niemeyer | 78429a6 | 2002-12-16 13:54:02 +0000 | [diff] [blame] | 2049 | com_node(c, CHILD(n, i+2)); /* value */ |
| 2050 | com_addbyte(c, ROT_THREE); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 2051 | com_addbyte(c, STORE_SUBSCR); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2052 | com_pop(c, 3); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 2053 | } |
| 2054 | } |
| 2055 | |
| 2056 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2057 | com_atom(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2058 | { |
| 2059 | node *ch; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2060 | PyObject *v; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2061 | int i; |
| 2062 | REQ(n, atom); |
| 2063 | ch = CHILD(n, 0); |
| 2064 | switch (TYPE(ch)) { |
| 2065 | case LPAR: |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2066 | if (TYPE(CHILD(n, 1)) == RPAR) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2067 | com_addoparg(c, BUILD_TUPLE, 0); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2068 | com_push(c, 1); |
| 2069 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2070 | else |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 2071 | com_testlist_gexp(c, CHILD(n, 1)); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2072 | break; |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 2073 | case LSQB: /* '[' [listmaker] ']' */ |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2074 | if (TYPE(CHILD(n, 1)) == RSQB) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2075 | com_addoparg(c, BUILD_LIST, 0); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2076 | com_push(c, 1); |
| 2077 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2078 | else |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 2079 | com_listmaker(c, CHILD(n, 1)); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2080 | break; |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 2081 | case LBRACE: /* '{' [dictmaker] '}' */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2082 | com_addoparg(c, BUILD_MAP, 0); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2083 | com_push(c, 1); |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 2084 | if (TYPE(CHILD(n, 1)) == dictmaker) |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 2085 | com_dictmaker(c, CHILD(n, 1)); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2086 | break; |
| 2087 | case BACKQUOTE: |
| 2088 | com_node(c, CHILD(n, 1)); |
| 2089 | com_addbyte(c, UNARY_CONVERT); |
| 2090 | break; |
| 2091 | case NUMBER: |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 2092 | if ((v = parsenumber(c, STR(ch))) == NULL) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2093 | i = 255; |
| 2094 | } |
| 2095 | else { |
| 2096 | i = com_addconst(c, v); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2097 | Py_DECREF(v); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2098 | } |
| 2099 | com_addoparg(c, LOAD_CONST, i); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2100 | com_push(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2101 | break; |
| 2102 | case STRING: |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 2103 | v = parsestrplus(c, n); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 2104 | if (v == NULL) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2105 | c->c_errors++; |
| 2106 | i = 255; |
| 2107 | } |
| 2108 | else { |
| 2109 | i = com_addconst(c, v); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2110 | Py_DECREF(v); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2111 | } |
| 2112 | com_addoparg(c, LOAD_CONST, i); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2113 | com_push(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2114 | break; |
| 2115 | case NAME: |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 2116 | com_addop_varname(c, VAR_LOAD, STR(ch)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2117 | com_push(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2118 | break; |
| 2119 | default: |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2120 | com_error(c, PyExc_SystemError, |
| 2121 | "com_atom: unexpected node type"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2122 | } |
| 2123 | } |
| 2124 | |
| 2125 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2126 | com_slice(struct compiling *c, node *n, int op) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2127 | { |
| 2128 | if (NCH(n) == 1) { |
| 2129 | com_addbyte(c, op); |
| 2130 | } |
| 2131 | else if (NCH(n) == 2) { |
| 2132 | if (TYPE(CHILD(n, 0)) != COLON) { |
| 2133 | com_node(c, CHILD(n, 0)); |
| 2134 | com_addbyte(c, op+1); |
| 2135 | } |
| 2136 | else { |
| 2137 | com_node(c, CHILD(n, 1)); |
| 2138 | com_addbyte(c, op+2); |
| 2139 | } |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2140 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2141 | } |
| 2142 | else { |
| 2143 | com_node(c, CHILD(n, 0)); |
| 2144 | com_node(c, CHILD(n, 2)); |
| 2145 | com_addbyte(c, op+3); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2146 | com_pop(c, 2); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2147 | } |
| 2148 | } |
| 2149 | |
Guido van Rossum | 635abd2 | 1997-01-06 22:56:52 +0000 | [diff] [blame] | 2150 | static void |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2151 | com_augassign_slice(struct compiling *c, node *n, int opcode, node *augn) |
| 2152 | { |
| 2153 | if (NCH(n) == 1) { |
| 2154 | com_addbyte(c, DUP_TOP); |
| 2155 | com_push(c, 1); |
| 2156 | com_addbyte(c, SLICE); |
| 2157 | com_node(c, augn); |
| 2158 | com_addbyte(c, opcode); |
| 2159 | com_pop(c, 1); |
| 2160 | com_addbyte(c, ROT_TWO); |
| 2161 | com_addbyte(c, STORE_SLICE); |
| 2162 | com_pop(c, 2); |
| 2163 | } else if (NCH(n) == 2 && TYPE(CHILD(n, 0)) != COLON) { |
| 2164 | com_node(c, CHILD(n, 0)); |
| 2165 | com_addoparg(c, DUP_TOPX, 2); |
| 2166 | com_push(c, 2); |
| 2167 | com_addbyte(c, SLICE+1); |
| 2168 | com_pop(c, 1); |
| 2169 | com_node(c, augn); |
| 2170 | com_addbyte(c, opcode); |
| 2171 | com_pop(c, 1); |
| 2172 | com_addbyte(c, ROT_THREE); |
| 2173 | com_addbyte(c, STORE_SLICE+1); |
| 2174 | com_pop(c, 3); |
| 2175 | } else if (NCH(n) == 2) { |
| 2176 | com_node(c, CHILD(n, 1)); |
| 2177 | com_addoparg(c, DUP_TOPX, 2); |
| 2178 | com_push(c, 2); |
| 2179 | com_addbyte(c, SLICE+2); |
| 2180 | com_pop(c, 1); |
| 2181 | com_node(c, augn); |
| 2182 | com_addbyte(c, opcode); |
| 2183 | com_pop(c, 1); |
| 2184 | com_addbyte(c, ROT_THREE); |
| 2185 | com_addbyte(c, STORE_SLICE+2); |
| 2186 | com_pop(c, 3); |
| 2187 | } else { |
| 2188 | com_node(c, CHILD(n, 0)); |
| 2189 | com_node(c, CHILD(n, 2)); |
| 2190 | com_addoparg(c, DUP_TOPX, 3); |
| 2191 | com_push(c, 3); |
| 2192 | com_addbyte(c, SLICE+3); |
| 2193 | com_pop(c, 2); |
| 2194 | com_node(c, augn); |
| 2195 | com_addbyte(c, opcode); |
| 2196 | com_pop(c, 1); |
| 2197 | com_addbyte(c, ROT_FOUR); |
| 2198 | com_addbyte(c, STORE_SLICE+3); |
| 2199 | com_pop(c, 4); |
| 2200 | } |
| 2201 | } |
| 2202 | |
| 2203 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2204 | com_argument(struct compiling *c, node *n, PyObject **pkeywords) |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 2205 | { |
| 2206 | node *m; |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 2207 | REQ(n, argument); /* [test '='] test [gen_for]; really [keyword '='] test */ |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 2208 | if (NCH(n) == 1) { |
Guido van Rossum | 635abd2 | 1997-01-06 22:56:52 +0000 | [diff] [blame] | 2209 | if (*pkeywords != NULL) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2210 | com_error(c, PyExc_SyntaxError, |
Fred Drake | dcf08e0 | 2000-08-15 15:49:44 +0000 | [diff] [blame] | 2211 | "non-keyword arg after keyword arg"); |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 2212 | } |
| 2213 | else { |
| 2214 | com_node(c, CHILD(n, 0)); |
| 2215 | } |
Guido van Rossum | 635abd2 | 1997-01-06 22:56:52 +0000 | [diff] [blame] | 2216 | return; |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 2217 | } |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 2218 | if (NCH(n) == 2) { |
| 2219 | com_generator_expression(c, n); |
| 2220 | return; |
| 2221 | } |
| 2222 | |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 2223 | m = n; |
| 2224 | do { |
| 2225 | m = CHILD(m, 0); |
| 2226 | } while (NCH(m) == 1); |
| 2227 | if (TYPE(m) != NAME) { |
Tim Peters | 4e30378 | 2001-02-18 04:45:10 +0000 | [diff] [blame] | 2228 | /* f(lambda x: x[0] = 3) ends up getting parsed with |
| 2229 | * LHS test = lambda x: x[0], and RHS test = 3. |
| 2230 | * SF bug 132313 points out that complaining about a keyword |
| 2231 | * then is very confusing. |
| 2232 | */ |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2233 | com_error(c, PyExc_SyntaxError, |
Tim Peters | 4e30378 | 2001-02-18 04:45:10 +0000 | [diff] [blame] | 2234 | TYPE(m) == lambdef ? |
| 2235 | "lambda cannot contain assignment" : |
| 2236 | "keyword can't be an expression"); |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 2237 | } |
| 2238 | else { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2239 | PyObject *v = PyString_InternFromString(STR(m)); |
Guido van Rossum | 63dd79a | 2002-08-16 02:24:56 +0000 | [diff] [blame] | 2240 | (void) none_assignment_check(c, STR(m), 1); |
Guido van Rossum | 635abd2 | 1997-01-06 22:56:52 +0000 | [diff] [blame] | 2241 | if (v != NULL && *pkeywords == NULL) |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2242 | *pkeywords = PyDict_New(); |
Jeremy Hylton | 39e2f3f | 2001-02-28 01:58:08 +0000 | [diff] [blame] | 2243 | if (v == NULL) |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 2244 | c->c_errors++; |
Jeremy Hylton | 39e2f3f | 2001-02-28 01:58:08 +0000 | [diff] [blame] | 2245 | else if (*pkeywords == NULL) { |
| 2246 | c->c_errors++; |
| 2247 | Py_DECREF(v); |
| 2248 | } else { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2249 | if (PyDict_GetItem(*pkeywords, v) != NULL) |
| 2250 | com_error(c, PyExc_SyntaxError, |
Guido van Rossum | 635abd2 | 1997-01-06 22:56:52 +0000 | [diff] [blame] | 2251 | "duplicate keyword argument"); |
| 2252 | else |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2253 | if (PyDict_SetItem(*pkeywords, v, v) != 0) |
Guido van Rossum | 635abd2 | 1997-01-06 22:56:52 +0000 | [diff] [blame] | 2254 | c->c_errors++; |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 2255 | com_addoparg(c, LOAD_CONST, com_addconst(c, v)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2256 | com_push(c, 1); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2257 | Py_DECREF(v); |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 2258 | } |
| 2259 | } |
| 2260 | com_node(c, CHILD(n, 2)); |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 2261 | } |
| 2262 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2263 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2264 | com_call_function(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2265 | { |
| 2266 | if (TYPE(n) == RPAR) { |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 2267 | com_addoparg(c, CALL_FUNCTION, 0); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2268 | } |
| 2269 | else { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2270 | PyObject *keywords = NULL; |
Guido van Rossum | 635abd2 | 1997-01-06 22:56:52 +0000 | [diff] [blame] | 2271 | int i, na, nk; |
Guido van Rossum | ca90605 | 1998-12-10 16:56:22 +0000 | [diff] [blame] | 2272 | int lineno = n->n_lineno; |
Jeremy Hylton | 7690151 | 2000-03-28 23:49:17 +0000 | [diff] [blame] | 2273 | int star_flag = 0; |
| 2274 | int starstar_flag = 0; |
| 2275 | int opcode; |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 2276 | REQ(n, arglist); |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 2277 | na = 0; |
| 2278 | nk = 0; |
| 2279 | for (i = 0; i < NCH(n); i += 2) { |
Guido van Rossum | ca90605 | 1998-12-10 16:56:22 +0000 | [diff] [blame] | 2280 | node *ch = CHILD(n, i); |
Jeremy Hylton | 7690151 | 2000-03-28 23:49:17 +0000 | [diff] [blame] | 2281 | if (TYPE(ch) == STAR || |
| 2282 | TYPE(ch) == DOUBLESTAR) |
| 2283 | break; |
Guido van Rossum | ca90605 | 1998-12-10 16:56:22 +0000 | [diff] [blame] | 2284 | if (ch->n_lineno != lineno) { |
| 2285 | lineno = ch->n_lineno; |
Michael W. Hudson | dd32a91 | 2002-08-15 14:59:02 +0000 | [diff] [blame] | 2286 | com_set_lineno(c, lineno); |
Guido van Rossum | ca90605 | 1998-12-10 16:56:22 +0000 | [diff] [blame] | 2287 | } |
| 2288 | com_argument(c, ch, &keywords); |
Guido van Rossum | 635abd2 | 1997-01-06 22:56:52 +0000 | [diff] [blame] | 2289 | if (keywords == NULL) |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 2290 | na++; |
| 2291 | else |
| 2292 | nk++; |
| 2293 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2294 | Py_XDECREF(keywords); |
Jeremy Hylton | 7690151 | 2000-03-28 23:49:17 +0000 | [diff] [blame] | 2295 | while (i < NCH(n)) { |
| 2296 | node *tok = CHILD(n, i); |
| 2297 | node *ch = CHILD(n, i+1); |
| 2298 | i += 3; |
| 2299 | switch (TYPE(tok)) { |
| 2300 | case STAR: star_flag = 1; break; |
| 2301 | case DOUBLESTAR: starstar_flag = 1; break; |
| 2302 | } |
| 2303 | com_node(c, ch); |
| 2304 | } |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 2305 | if (na > 255 || nk > 255) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2306 | com_error(c, PyExc_SyntaxError, |
| 2307 | "more than 255 arguments"); |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 2308 | } |
Jeremy Hylton | 7690151 | 2000-03-28 23:49:17 +0000 | [diff] [blame] | 2309 | if (star_flag || starstar_flag) |
Jeremy Hylton | e4fb958 | 2000-03-29 00:10:44 +0000 | [diff] [blame] | 2310 | opcode = CALL_FUNCTION_VAR - 1 + |
Jeremy Hylton | 7690151 | 2000-03-28 23:49:17 +0000 | [diff] [blame] | 2311 | star_flag + (starstar_flag << 1); |
| 2312 | else |
| 2313 | opcode = CALL_FUNCTION; |
| 2314 | com_addoparg(c, opcode, na | (nk << 8)); |
| 2315 | com_pop(c, na + 2*nk + star_flag + starstar_flag); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2316 | } |
| 2317 | } |
| 2318 | |
| 2319 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2320 | com_select_member(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2321 | { |
| 2322 | com_addopname(c, LOAD_ATTR, n); |
| 2323 | } |
| 2324 | |
| 2325 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2326 | com_sliceobj(struct compiling *c, node *n) |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 2327 | { |
| 2328 | int i=0; |
| 2329 | int ns=2; /* number of slice arguments */ |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 2330 | node *ch; |
| 2331 | |
| 2332 | /* first argument */ |
| 2333 | if (TYPE(CHILD(n,i)) == COLON) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2334 | com_addoparg(c, LOAD_CONST, com_addconst(c, Py_None)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2335 | com_push(c, 1); |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 2336 | i++; |
| 2337 | } |
| 2338 | else { |
| 2339 | com_node(c, CHILD(n,i)); |
| 2340 | i++; |
| 2341 | REQ(CHILD(n,i),COLON); |
| 2342 | i++; |
| 2343 | } |
| 2344 | /* second argument */ |
| 2345 | if (i < NCH(n) && TYPE(CHILD(n,i)) == test) { |
| 2346 | com_node(c, CHILD(n,i)); |
| 2347 | i++; |
| 2348 | } |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2349 | else { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2350 | com_addoparg(c, LOAD_CONST, com_addconst(c, Py_None)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2351 | com_push(c, 1); |
| 2352 | } |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 2353 | /* remaining arguments */ |
| 2354 | for (; i < NCH(n); i++) { |
| 2355 | ns++; |
| 2356 | ch=CHILD(n,i); |
| 2357 | REQ(ch, sliceop); |
| 2358 | if (NCH(ch) == 1) { |
| 2359 | /* right argument of ':' missing */ |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2360 | com_addoparg(c, LOAD_CONST, com_addconst(c, Py_None)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2361 | com_push(c, 1); |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 2362 | } |
| 2363 | else |
| 2364 | com_node(c, CHILD(ch,1)); |
| 2365 | } |
| 2366 | com_addoparg(c, BUILD_SLICE, ns); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2367 | com_pop(c, 1 + (ns == 3)); |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 2368 | } |
| 2369 | |
| 2370 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2371 | com_subscript(struct compiling *c, node *n) |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 2372 | { |
| 2373 | node *ch; |
| 2374 | REQ(n, subscript); |
| 2375 | ch = CHILD(n,0); |
| 2376 | /* check for rubber index */ |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2377 | if (TYPE(ch) == DOT && TYPE(CHILD(n,1)) == DOT) { |
Guido van Rossum | e449af7 | 1996-10-11 16:25:41 +0000 | [diff] [blame] | 2378 | com_addoparg(c, LOAD_CONST, com_addconst(c, Py_Ellipsis)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2379 | com_push(c, 1); |
| 2380 | } |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 2381 | else { |
| 2382 | /* check for slice */ |
| 2383 | if ((TYPE(ch) == COLON || NCH(n) > 1)) |
| 2384 | com_sliceobj(c, n); |
| 2385 | else { |
| 2386 | REQ(ch, test); |
| 2387 | com_node(c, ch); |
| 2388 | } |
| 2389 | } |
| 2390 | } |
| 2391 | |
| 2392 | static void |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2393 | com_subscriptlist(struct compiling *c, node *n, int assigning, node *augn) |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 2394 | { |
| 2395 | int i, op; |
| 2396 | REQ(n, subscriptlist); |
| 2397 | /* Check to make backward compatible slice behavior for '[i:j]' */ |
| 2398 | if (NCH(n) == 1) { |
| 2399 | node *sub = CHILD(n, 0); /* subscript */ |
Thomas Wouters | e8643c4 | 2000-08-05 21:37:50 +0000 | [diff] [blame] | 2400 | /* 'Basic' slice, should have exactly one colon. */ |
| 2401 | if ((TYPE(CHILD(sub, 0)) == COLON |
| 2402 | || (NCH(sub) > 1 && TYPE(CHILD(sub, 1)) == COLON)) |
| 2403 | && (TYPE(CHILD(sub,NCH(sub)-1)) != sliceop)) |
| 2404 | { |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2405 | switch (assigning) { |
| 2406 | case OP_DELETE: |
| 2407 | op = DELETE_SLICE; |
| 2408 | break; |
| 2409 | case OP_ASSIGN: |
| 2410 | op = STORE_SLICE; |
| 2411 | break; |
| 2412 | case OP_APPLY: |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 2413 | op = SLICE; |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2414 | break; |
| 2415 | default: |
| 2416 | com_augassign_slice(c, sub, assigning, augn); |
| 2417 | return; |
| 2418 | } |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 2419 | com_slice(c, sub, op); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2420 | if (op == STORE_SLICE) |
| 2421 | com_pop(c, 2); |
| 2422 | else if (op == DELETE_SLICE) |
| 2423 | com_pop(c, 1); |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 2424 | return; |
| 2425 | } |
| 2426 | } |
| 2427 | /* Else normal subscriptlist. Compile each subscript. */ |
| 2428 | for (i = 0; i < NCH(n); i += 2) |
| 2429 | com_subscript(c, CHILD(n, i)); |
| 2430 | /* Put multiple subscripts into a tuple */ |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2431 | if (NCH(n) > 1) { |
| 2432 | i = (NCH(n)+1) / 2; |
| 2433 | com_addoparg(c, BUILD_TUPLE, i); |
| 2434 | com_pop(c, i-1); |
| 2435 | } |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2436 | switch (assigning) { |
| 2437 | case OP_DELETE: |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2438 | op = DELETE_SUBSCR; |
| 2439 | i = 2; |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2440 | break; |
| 2441 | default: |
| 2442 | case OP_ASSIGN: |
| 2443 | op = STORE_SUBSCR; |
| 2444 | i = 3; |
| 2445 | break; |
| 2446 | case OP_APPLY: |
| 2447 | op = BINARY_SUBSCR; |
| 2448 | i = 1; |
| 2449 | break; |
| 2450 | } |
| 2451 | if (assigning > OP_APPLY) { |
| 2452 | com_addoparg(c, DUP_TOPX, 2); |
| 2453 | com_push(c, 2); |
| 2454 | com_addbyte(c, BINARY_SUBSCR); |
| 2455 | com_pop(c, 1); |
| 2456 | com_node(c, augn); |
| 2457 | com_addbyte(c, assigning); |
| 2458 | com_pop(c, 1); |
| 2459 | com_addbyte(c, ROT_THREE); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2460 | } |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 2461 | com_addbyte(c, op); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2462 | com_pop(c, i); |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 2463 | } |
| 2464 | |
| 2465 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2466 | com_apply_trailer(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2467 | { |
| 2468 | REQ(n, trailer); |
| 2469 | switch (TYPE(CHILD(n, 0))) { |
| 2470 | case LPAR: |
| 2471 | com_call_function(c, CHILD(n, 1)); |
| 2472 | break; |
| 2473 | case DOT: |
| 2474 | com_select_member(c, CHILD(n, 1)); |
| 2475 | break; |
| 2476 | case LSQB: |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2477 | com_subscriptlist(c, CHILD(n, 1), OP_APPLY, NULL); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2478 | break; |
| 2479 | default: |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2480 | com_error(c, PyExc_SystemError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 2481 | "com_apply_trailer: unknown trailer type"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2482 | } |
| 2483 | } |
| 2484 | |
| 2485 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2486 | com_power(struct compiling *c, node *n) |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 2487 | { |
| 2488 | int i; |
| 2489 | REQ(n, power); |
| 2490 | com_atom(c, CHILD(n, 0)); |
| 2491 | for (i = 1; i < NCH(n); i++) { |
| 2492 | if (TYPE(CHILD(n, i)) == DOUBLESTAR) { |
| 2493 | com_factor(c, CHILD(n, i+1)); |
| 2494 | com_addbyte(c, BINARY_POWER); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2495 | com_pop(c, 1); |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 2496 | break; |
| 2497 | } |
| 2498 | else |
| 2499 | com_apply_trailer(c, CHILD(n, i)); |
| 2500 | } |
| 2501 | } |
| 2502 | |
| 2503 | static void |
Jeremy Hylton | d5e5a2a | 2001-08-12 01:54:38 +0000 | [diff] [blame] | 2504 | com_invert_constant(struct compiling *c, node *n) |
| 2505 | { |
| 2506 | /* Compute the inverse of int and longs and use them directly, |
| 2507 | but be prepared to generate code for all other |
| 2508 | possibilities (invalid numbers, floats, complex). |
| 2509 | */ |
| 2510 | PyObject *num, *inv = NULL; |
| 2511 | int i; |
| 2512 | |
| 2513 | REQ(n, NUMBER); |
| 2514 | num = parsenumber(c, STR(n)); |
| 2515 | if (num == NULL) |
| 2516 | i = 255; |
| 2517 | else { |
| 2518 | inv = PyNumber_Invert(num); |
| 2519 | if (inv == NULL) { |
| 2520 | PyErr_Clear(); |
| 2521 | i = com_addconst(c, num); |
| 2522 | } else { |
| 2523 | i = com_addconst(c, inv); |
| 2524 | Py_DECREF(inv); |
| 2525 | } |
| 2526 | Py_DECREF(num); |
| 2527 | } |
| 2528 | com_addoparg(c, LOAD_CONST, i); |
| 2529 | com_push(c, 1); |
| 2530 | if (num != NULL && inv == NULL) |
| 2531 | com_addbyte(c, UNARY_INVERT); |
| 2532 | } |
| 2533 | |
Tim Peters | 51e2651 | 2001-09-07 08:45:55 +0000 | [diff] [blame] | 2534 | static int |
| 2535 | is_float_zero(const char *p) |
| 2536 | { |
| 2537 | int found_radix_point = 0; |
| 2538 | int ch; |
| 2539 | while ((ch = Py_CHARMASK(*p++)) != '\0') { |
| 2540 | switch (ch) { |
| 2541 | case '0': |
| 2542 | /* no reason to believe it's not 0 -- continue */ |
| 2543 | break; |
| 2544 | |
| 2545 | case 'e': case 'E': case 'j': case 'J': |
| 2546 | /* If this was a hex constant, we already would have |
| 2547 | returned 0 due to the 'x' or 'X', so 'e' or 'E' |
| 2548 | must be an exponent marker, and we haven't yet |
| 2549 | seen a non-zero digit, and it doesn't matter what |
| 2550 | the exponent is then. For 'j' or 'J' similarly, |
| 2551 | except that this is an imaginary 0 then. */ |
| 2552 | return 1; |
| 2553 | |
| 2554 | case '.': |
| 2555 | found_radix_point = 1; |
| 2556 | break; |
| 2557 | |
| 2558 | default: |
| 2559 | return 0; |
| 2560 | } |
| 2561 | } |
| 2562 | return found_radix_point; |
| 2563 | } |
| 2564 | |
Jeremy Hylton | d5e5a2a | 2001-08-12 01:54:38 +0000 | [diff] [blame] | 2565 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2566 | com_factor(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2567 | { |
Jeremy Hylton | d5e5a2a | 2001-08-12 01:54:38 +0000 | [diff] [blame] | 2568 | int childtype = TYPE(CHILD(n, 0)); |
Tim Peters | 51e2651 | 2001-09-07 08:45:55 +0000 | [diff] [blame] | 2569 | node *pfactor, *ppower, *patom, *pnum; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2570 | REQ(n, factor); |
Jeremy Hylton | d5e5a2a | 2001-08-12 01:54:38 +0000 | [diff] [blame] | 2571 | /* If the unary +, -, or ~ operator is applied to a constant, |
Tim Peters | 51e2651 | 2001-09-07 08:45:55 +0000 | [diff] [blame] | 2572 | don't generate a UNARY_xxx opcode. Just store the |
Jeremy Hylton | d5e5a2a | 2001-08-12 01:54:38 +0000 | [diff] [blame] | 2573 | approriate value as a constant. If the value is negative, |
| 2574 | extend the string containing the constant and insert a |
Tim Peters | 51e2651 | 2001-09-07 08:45:55 +0000 | [diff] [blame] | 2575 | negative in the 0th position -- unless we're doing unary minus |
| 2576 | of a floating zero! In that case the sign is significant, but |
| 2577 | the const dict can't distinguish +0.0 from -0.0. |
Jeremy Hylton | d5e5a2a | 2001-08-12 01:54:38 +0000 | [diff] [blame] | 2578 | */ |
| 2579 | if ((childtype == PLUS || childtype == MINUS || childtype == TILDE) |
Fred Drake | 14ef244 | 2001-08-30 18:53:25 +0000 | [diff] [blame] | 2580 | && NCH(n) == 2 |
Tim Peters | 51e2651 | 2001-09-07 08:45:55 +0000 | [diff] [blame] | 2581 | && TYPE((pfactor = CHILD(n, 1))) == factor |
| 2582 | && NCH(pfactor) == 1 |
| 2583 | && TYPE((ppower = CHILD(pfactor, 0))) == power |
| 2584 | && NCH(ppower) == 1 |
| 2585 | && TYPE((patom = CHILD(ppower, 0))) == atom |
| 2586 | && TYPE((pnum = CHILD(patom, 0))) == NUMBER |
Guido van Rossum | 66b1259 | 2003-02-12 16:57:47 +0000 | [diff] [blame] | 2587 | && !(childtype == MINUS && |
| 2588 | (STR(pnum)[0] == '0' || is_float_zero(STR(pnum))))) { |
Jeremy Hylton | d5e5a2a | 2001-08-12 01:54:38 +0000 | [diff] [blame] | 2589 | if (childtype == TILDE) { |
Tim Peters | 51e2651 | 2001-09-07 08:45:55 +0000 | [diff] [blame] | 2590 | com_invert_constant(c, pnum); |
Jeremy Hylton | d5e5a2a | 2001-08-12 01:54:38 +0000 | [diff] [blame] | 2591 | return; |
| 2592 | } |
| 2593 | if (childtype == MINUS) { |
Andrew MacIntyre | 80d4e2a | 2002-08-04 06:28:21 +0000 | [diff] [blame] | 2594 | char *s = PyObject_MALLOC(strlen(STR(pnum)) + 2); |
Jeremy Hylton | d5e5a2a | 2001-08-12 01:54:38 +0000 | [diff] [blame] | 2595 | if (s == NULL) { |
| 2596 | com_error(c, PyExc_MemoryError, ""); |
| 2597 | com_addbyte(c, 255); |
| 2598 | return; |
| 2599 | } |
| 2600 | s[0] = '-'; |
Tim Peters | 51e2651 | 2001-09-07 08:45:55 +0000 | [diff] [blame] | 2601 | strcpy(s + 1, STR(pnum)); |
Andrew MacIntyre | 80d4e2a | 2002-08-04 06:28:21 +0000 | [diff] [blame] | 2602 | PyObject_FREE(STR(pnum)); |
Tim Peters | 51e2651 | 2001-09-07 08:45:55 +0000 | [diff] [blame] | 2603 | STR(pnum) = s; |
Jeremy Hylton | d5e5a2a | 2001-08-12 01:54:38 +0000 | [diff] [blame] | 2604 | } |
Tim Peters | 51e2651 | 2001-09-07 08:45:55 +0000 | [diff] [blame] | 2605 | com_atom(c, patom); |
Jeremy Hylton | d5e5a2a | 2001-08-12 01:54:38 +0000 | [diff] [blame] | 2606 | } |
| 2607 | else if (childtype == PLUS) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2608 | com_factor(c, CHILD(n, 1)); |
| 2609 | com_addbyte(c, UNARY_POSITIVE); |
| 2610 | } |
Jeremy Hylton | d5e5a2a | 2001-08-12 01:54:38 +0000 | [diff] [blame] | 2611 | else if (childtype == MINUS) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2612 | com_factor(c, CHILD(n, 1)); |
| 2613 | com_addbyte(c, UNARY_NEGATIVE); |
| 2614 | } |
Jeremy Hylton | d5e5a2a | 2001-08-12 01:54:38 +0000 | [diff] [blame] | 2615 | else if (childtype == TILDE) { |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 2616 | com_factor(c, CHILD(n, 1)); |
| 2617 | com_addbyte(c, UNARY_INVERT); |
| 2618 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2619 | else { |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 2620 | com_power(c, CHILD(n, 0)); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2621 | } |
| 2622 | } |
| 2623 | |
| 2624 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2625 | com_term(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2626 | { |
| 2627 | int i; |
| 2628 | int op; |
| 2629 | REQ(n, term); |
| 2630 | com_factor(c, CHILD(n, 0)); |
| 2631 | for (i = 2; i < NCH(n); i += 2) { |
| 2632 | com_factor(c, CHILD(n, i)); |
| 2633 | switch (TYPE(CHILD(n, i-1))) { |
| 2634 | case STAR: |
| 2635 | op = BINARY_MULTIPLY; |
| 2636 | break; |
| 2637 | case SLASH: |
Guido van Rossum | 4668b00 | 2001-08-08 05:00:18 +0000 | [diff] [blame] | 2638 | if (c->c_flags & CO_FUTURE_DIVISION) |
| 2639 | op = BINARY_TRUE_DIVIDE; |
| 2640 | else |
| 2641 | op = BINARY_DIVIDE; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2642 | break; |
| 2643 | case PERCENT: |
| 2644 | op = BINARY_MODULO; |
| 2645 | break; |
Guido van Rossum | 4668b00 | 2001-08-08 05:00:18 +0000 | [diff] [blame] | 2646 | case DOUBLESLASH: |
| 2647 | op = BINARY_FLOOR_DIVIDE; |
| 2648 | break; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2649 | default: |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2650 | com_error(c, PyExc_SystemError, |
Guido van Rossum | 4668b00 | 2001-08-08 05:00:18 +0000 | [diff] [blame] | 2651 | "com_term: operator not *, /, // or %"); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 2652 | op = 255; |
| 2653 | } |
| 2654 | com_addbyte(c, op); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2655 | com_pop(c, 1); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 2656 | } |
| 2657 | } |
| 2658 | |
| 2659 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2660 | com_arith_expr(struct compiling *c, node *n) |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 2661 | { |
| 2662 | int i; |
| 2663 | int op; |
| 2664 | REQ(n, arith_expr); |
| 2665 | com_term(c, CHILD(n, 0)); |
| 2666 | for (i = 2; i < NCH(n); i += 2) { |
| 2667 | com_term(c, CHILD(n, i)); |
| 2668 | switch (TYPE(CHILD(n, i-1))) { |
| 2669 | case PLUS: |
| 2670 | op = BINARY_ADD; |
| 2671 | break; |
| 2672 | case MINUS: |
| 2673 | op = BINARY_SUBTRACT; |
| 2674 | break; |
| 2675 | default: |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2676 | com_error(c, PyExc_SystemError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 2677 | "com_arith_expr: operator not + or -"); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 2678 | op = 255; |
| 2679 | } |
| 2680 | com_addbyte(c, op); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2681 | com_pop(c, 1); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 2682 | } |
| 2683 | } |
| 2684 | |
| 2685 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2686 | com_shift_expr(struct compiling *c, node *n) |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 2687 | { |
| 2688 | int i; |
| 2689 | int op; |
| 2690 | REQ(n, shift_expr); |
| 2691 | com_arith_expr(c, CHILD(n, 0)); |
| 2692 | for (i = 2; i < NCH(n); i += 2) { |
| 2693 | com_arith_expr(c, CHILD(n, i)); |
| 2694 | switch (TYPE(CHILD(n, i-1))) { |
| 2695 | case LEFTSHIFT: |
| 2696 | op = BINARY_LSHIFT; |
| 2697 | break; |
| 2698 | case RIGHTSHIFT: |
| 2699 | op = BINARY_RSHIFT; |
| 2700 | break; |
| 2701 | default: |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2702 | com_error(c, PyExc_SystemError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 2703 | "com_shift_expr: operator not << or >>"); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 2704 | op = 255; |
| 2705 | } |
| 2706 | com_addbyte(c, op); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2707 | com_pop(c, 1); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 2708 | } |
| 2709 | } |
| 2710 | |
| 2711 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2712 | com_and_expr(struct compiling *c, node *n) |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 2713 | { |
| 2714 | int i; |
| 2715 | int op; |
| 2716 | REQ(n, and_expr); |
| 2717 | com_shift_expr(c, CHILD(n, 0)); |
| 2718 | for (i = 2; i < NCH(n); i += 2) { |
| 2719 | com_shift_expr(c, CHILD(n, i)); |
| 2720 | if (TYPE(CHILD(n, i-1)) == AMPER) { |
| 2721 | op = BINARY_AND; |
| 2722 | } |
| 2723 | else { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2724 | com_error(c, PyExc_SystemError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 2725 | "com_and_expr: operator not &"); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 2726 | op = 255; |
| 2727 | } |
| 2728 | com_addbyte(c, op); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2729 | com_pop(c, 1); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 2730 | } |
| 2731 | } |
| 2732 | |
| 2733 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2734 | com_xor_expr(struct compiling *c, node *n) |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 2735 | { |
| 2736 | int i; |
| 2737 | int op; |
| 2738 | REQ(n, xor_expr); |
| 2739 | com_and_expr(c, CHILD(n, 0)); |
| 2740 | for (i = 2; i < NCH(n); i += 2) { |
| 2741 | com_and_expr(c, CHILD(n, i)); |
| 2742 | if (TYPE(CHILD(n, i-1)) == CIRCUMFLEX) { |
| 2743 | op = BINARY_XOR; |
| 2744 | } |
| 2745 | else { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2746 | com_error(c, PyExc_SystemError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 2747 | "com_xor_expr: operator not ^"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2748 | op = 255; |
| 2749 | } |
| 2750 | com_addbyte(c, op); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2751 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2752 | } |
| 2753 | } |
| 2754 | |
| 2755 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2756 | com_expr(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2757 | { |
| 2758 | int i; |
| 2759 | int op; |
| 2760 | REQ(n, expr); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 2761 | com_xor_expr(c, CHILD(n, 0)); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2762 | for (i = 2; i < NCH(n); i += 2) { |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 2763 | com_xor_expr(c, CHILD(n, i)); |
| 2764 | if (TYPE(CHILD(n, i-1)) == VBAR) { |
| 2765 | op = BINARY_OR; |
| 2766 | } |
| 2767 | else { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2768 | com_error(c, PyExc_SystemError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 2769 | "com_expr: expr operator not |"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2770 | op = 255; |
| 2771 | } |
| 2772 | com_addbyte(c, op); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2773 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2774 | } |
| 2775 | } |
| 2776 | |
| 2777 | static enum cmp_op |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2778 | cmp_type(node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2779 | { |
| 2780 | REQ(n, comp_op); |
Tim Peters | 12d55a7 | 2003-05-12 19:16:52 +0000 | [diff] [blame] | 2781 | /* comp_op: '<' | '>' | '>=' | '<=' | '<>' | '!=' | '==' |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2782 | | 'in' | 'not' 'in' | 'is' | 'is' not' */ |
| 2783 | if (NCH(n) == 1) { |
| 2784 | n = CHILD(n, 0); |
| 2785 | switch (TYPE(n)) { |
Martin v. Löwis | 7198a52 | 2002-01-01 19:59:11 +0000 | [diff] [blame] | 2786 | case LESS: return PyCmp_LT; |
| 2787 | case GREATER: return PyCmp_GT; |
Tim Peters | 12d55a7 | 2003-05-12 19:16:52 +0000 | [diff] [blame] | 2788 | case EQEQUAL: return PyCmp_EQ; |
Martin v. Löwis | 7198a52 | 2002-01-01 19:59:11 +0000 | [diff] [blame] | 2789 | case LESSEQUAL: return PyCmp_LE; |
| 2790 | case GREATEREQUAL: return PyCmp_GE; |
| 2791 | case NOTEQUAL: return PyCmp_NE; /* <> or != */ |
| 2792 | case NAME: if (strcmp(STR(n), "in") == 0) return PyCmp_IN; |
| 2793 | if (strcmp(STR(n), "is") == 0) return PyCmp_IS; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2794 | } |
| 2795 | } |
| 2796 | else if (NCH(n) == 2) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2797 | switch (TYPE(CHILD(n, 0))) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2798 | case NAME: if (strcmp(STR(CHILD(n, 1)), "in") == 0) |
Martin v. Löwis | 7198a52 | 2002-01-01 19:59:11 +0000 | [diff] [blame] | 2799 | return PyCmp_NOT_IN; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2800 | if (strcmp(STR(CHILD(n, 0)), "is") == 0) |
Martin v. Löwis | 7198a52 | 2002-01-01 19:59:11 +0000 | [diff] [blame] | 2801 | return PyCmp_IS_NOT; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2802 | } |
| 2803 | } |
Martin v. Löwis | 7198a52 | 2002-01-01 19:59:11 +0000 | [diff] [blame] | 2804 | return PyCmp_BAD; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2805 | } |
| 2806 | |
| 2807 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2808 | com_comparison(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2809 | { |
| 2810 | int i; |
| 2811 | enum cmp_op op; |
| 2812 | int anchor; |
| 2813 | REQ(n, comparison); /* comparison: expr (comp_op expr)* */ |
| 2814 | com_expr(c, CHILD(n, 0)); |
| 2815 | if (NCH(n) == 1) |
| 2816 | return; |
| 2817 | |
| 2818 | /**************************************************************** |
| 2819 | The following code is generated for all but the last |
| 2820 | comparison in a chain: |
| 2821 | |
| 2822 | label: on stack: opcode: jump to: |
| 2823 | |
| 2824 | a <code to load b> |
| 2825 | a, b DUP_TOP |
| 2826 | a, b, b ROT_THREE |
| 2827 | b, a, b COMPARE_OP |
| 2828 | b, 0-or-1 JUMP_IF_FALSE L1 |
| 2829 | b, 1 POP_TOP |
| 2830 | b |
| 2831 | |
| 2832 | We are now ready to repeat this sequence for the next |
| 2833 | comparison in the chain. |
| 2834 | |
| 2835 | For the last we generate: |
| 2836 | |
| 2837 | b <code to load c> |
| 2838 | b, c COMPARE_OP |
| 2839 | 0-or-1 |
| 2840 | |
| 2841 | If there were any jumps to L1 (i.e., there was more than one |
| 2842 | comparison), we generate: |
| 2843 | |
| 2844 | 0-or-1 JUMP_FORWARD L2 |
| 2845 | L1: b, 0 ROT_TWO |
| 2846 | 0, b POP_TOP |
| 2847 | 0 |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2848 | L2: 0-or-1 |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2849 | ****************************************************************/ |
| 2850 | |
| 2851 | anchor = 0; |
| 2852 | |
| 2853 | for (i = 2; i < NCH(n); i += 2) { |
| 2854 | com_expr(c, CHILD(n, i)); |
| 2855 | if (i+2 < NCH(n)) { |
| 2856 | com_addbyte(c, DUP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2857 | com_push(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2858 | com_addbyte(c, ROT_THREE); |
| 2859 | } |
| 2860 | op = cmp_type(CHILD(n, i-1)); |
Martin v. Löwis | 7198a52 | 2002-01-01 19:59:11 +0000 | [diff] [blame] | 2861 | if (op == PyCmp_BAD) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2862 | com_error(c, PyExc_SystemError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 2863 | "com_comparison: unknown comparison op"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2864 | } |
| 2865 | com_addoparg(c, COMPARE_OP, op); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2866 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2867 | if (i+2 < NCH(n)) { |
| 2868 | com_addfwref(c, JUMP_IF_FALSE, &anchor); |
| 2869 | com_addbyte(c, POP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2870 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2871 | } |
| 2872 | } |
| 2873 | |
| 2874 | if (anchor) { |
| 2875 | int anchor2 = 0; |
| 2876 | com_addfwref(c, JUMP_FORWARD, &anchor2); |
| 2877 | com_backpatch(c, anchor); |
| 2878 | com_addbyte(c, ROT_TWO); |
| 2879 | com_addbyte(c, POP_TOP); |
| 2880 | com_backpatch(c, anchor2); |
| 2881 | } |
| 2882 | } |
| 2883 | |
| 2884 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2885 | com_not_test(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2886 | { |
| 2887 | REQ(n, not_test); /* 'not' not_test | comparison */ |
| 2888 | if (NCH(n) == 1) { |
| 2889 | com_comparison(c, CHILD(n, 0)); |
| 2890 | } |
| 2891 | else { |
| 2892 | com_not_test(c, CHILD(n, 1)); |
| 2893 | com_addbyte(c, UNARY_NOT); |
| 2894 | } |
| 2895 | } |
| 2896 | |
| 2897 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2898 | com_and_test(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2899 | { |
| 2900 | int i; |
| 2901 | int anchor; |
| 2902 | REQ(n, and_test); /* not_test ('and' not_test)* */ |
| 2903 | anchor = 0; |
| 2904 | i = 0; |
| 2905 | for (;;) { |
| 2906 | com_not_test(c, CHILD(n, i)); |
| 2907 | if ((i += 2) >= NCH(n)) |
| 2908 | break; |
| 2909 | com_addfwref(c, JUMP_IF_FALSE, &anchor); |
| 2910 | com_addbyte(c, POP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2911 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2912 | } |
| 2913 | if (anchor) |
| 2914 | com_backpatch(c, anchor); |
| 2915 | } |
| 2916 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 2917 | static int |
| 2918 | com_make_closure(struct compiling *c, PyCodeObject *co) |
| 2919 | { |
Jeremy Hylton | 733c893 | 2001-12-13 19:51:56 +0000 | [diff] [blame] | 2920 | int i, free = PyCode_GetNumFree(co); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 2921 | if (free == 0) |
| 2922 | return 0; |
| 2923 | for (i = 0; i < free; ++i) { |
| 2924 | /* Bypass com_addop_varname because it will generate |
| 2925 | LOAD_DEREF but LOAD_CLOSURE is needed. |
| 2926 | */ |
| 2927 | PyObject *name = PyTuple_GET_ITEM(co->co_freevars, i); |
| 2928 | int arg, reftype; |
| 2929 | |
| 2930 | /* Special case: If a class contains a method with a |
| 2931 | free variable that has the same name as a method, |
| 2932 | the name will be considered free *and* local in the |
| 2933 | class. It should be handled by the closure, as |
| 2934 | well as by the normal name loookup logic. |
| 2935 | */ |
| 2936 | reftype = get_ref_type(c, PyString_AS_STRING(name)); |
| 2937 | if (reftype == CELL) |
| 2938 | arg = com_lookup_arg(c->c_cellvars, name); |
| 2939 | else /* (reftype == FREE) */ |
| 2940 | arg = com_lookup_arg(c->c_freevars, name); |
| 2941 | if (arg == -1) { |
Jeremy Hylton | 7889107 | 2001-03-01 06:09:34 +0000 | [diff] [blame] | 2942 | fprintf(stderr, "lookup %s in %s %d %d\n" |
| 2943 | "freevars of %s: %s\n", |
| 2944 | PyObject_REPR(name), |
| 2945 | c->c_name, |
| 2946 | reftype, arg, |
| 2947 | PyString_AS_STRING(co->co_name), |
| 2948 | PyObject_REPR(co->co_freevars)); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 2949 | Py_FatalError("com_make_closure()"); |
| 2950 | } |
| 2951 | com_addoparg(c, LOAD_CLOSURE, arg); |
| 2952 | |
| 2953 | } |
| 2954 | com_push(c, free); |
| 2955 | return 1; |
| 2956 | } |
| 2957 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2958 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2959 | com_test(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2960 | { |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2961 | REQ(n, test); /* and_test ('or' and_test)* | lambdef */ |
Guido van Rossum | 57531fe | 1993-11-30 14:57:42 +0000 | [diff] [blame] | 2962 | if (NCH(n) == 1 && TYPE(CHILD(n, 0)) == lambdef) { |
Jeremy Hylton | 93a569d | 2001-10-17 13:22:22 +0000 | [diff] [blame] | 2963 | PyCodeObject *co; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 2964 | int i, closure; |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 2965 | int ndefs = com_argdefs(c, CHILD(n, 0)); |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 2966 | symtable_enter_scope(c->c_symtable, "lambda", lambdef, |
| 2967 | n->n_lineno); |
Jeremy Hylton | 93a569d | 2001-10-17 13:22:22 +0000 | [diff] [blame] | 2968 | co = icompile(CHILD(n, 0), c); |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 2969 | if (co == NULL) { |
| 2970 | c->c_errors++; |
| 2971 | return; |
| 2972 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 2973 | symtable_exit_scope(c->c_symtable); |
Jeremy Hylton | 93a569d | 2001-10-17 13:22:22 +0000 | [diff] [blame] | 2974 | i = com_addconst(c, (PyObject *)co); |
| 2975 | closure = com_make_closure(c, co); |
Guido van Rossum | 57531fe | 1993-11-30 14:57:42 +0000 | [diff] [blame] | 2976 | com_addoparg(c, LOAD_CONST, i); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2977 | com_push(c, 1); |
Jeremy Hylton | 93a569d | 2001-10-17 13:22:22 +0000 | [diff] [blame] | 2978 | if (closure) { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 2979 | com_addoparg(c, MAKE_CLOSURE, ndefs); |
Jeremy Hylton | 733c893 | 2001-12-13 19:51:56 +0000 | [diff] [blame] | 2980 | com_pop(c, PyCode_GetNumFree(co)); |
Jeremy Hylton | 93a569d | 2001-10-17 13:22:22 +0000 | [diff] [blame] | 2981 | } else |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 2982 | com_addoparg(c, MAKE_FUNCTION, ndefs); |
Jeremy Hylton | 93a569d | 2001-10-17 13:22:22 +0000 | [diff] [blame] | 2983 | Py_DECREF(co); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2984 | com_pop(c, ndefs); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2985 | } |
Guido van Rossum | 57531fe | 1993-11-30 14:57:42 +0000 | [diff] [blame] | 2986 | else { |
| 2987 | int anchor = 0; |
| 2988 | int i = 0; |
| 2989 | for (;;) { |
| 2990 | com_and_test(c, CHILD(n, i)); |
| 2991 | if ((i += 2) >= NCH(n)) |
| 2992 | break; |
| 2993 | com_addfwref(c, JUMP_IF_TRUE, &anchor); |
| 2994 | com_addbyte(c, POP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2995 | com_pop(c, 1); |
Guido van Rossum | 57531fe | 1993-11-30 14:57:42 +0000 | [diff] [blame] | 2996 | } |
| 2997 | if (anchor) |
| 2998 | com_backpatch(c, anchor); |
| 2999 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3000 | } |
| 3001 | |
| 3002 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3003 | com_list(struct compiling *c, node *n, int toplevel) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3004 | { |
| 3005 | /* exprlist: expr (',' expr)* [',']; likewise for testlist */ |
Guido van Rossum | 288a60f | 1991-12-16 13:05:10 +0000 | [diff] [blame] | 3006 | if (NCH(n) == 1 && !toplevel) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3007 | com_node(c, CHILD(n, 0)); |
| 3008 | } |
| 3009 | else { |
| 3010 | int i; |
| 3011 | int len; |
| 3012 | len = (NCH(n) + 1) / 2; |
| 3013 | for (i = 0; i < NCH(n); i += 2) |
| 3014 | com_node(c, CHILD(n, i)); |
| 3015 | com_addoparg(c, BUILD_TUPLE, len); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3016 | com_pop(c, len-1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3017 | } |
| 3018 | } |
| 3019 | |
| 3020 | |
| 3021 | /* Begin of assignment compilation */ |
| 3022 | |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3023 | |
| 3024 | static void |
| 3025 | com_augassign_attr(struct compiling *c, node *n, int opcode, node *augn) |
| 3026 | { |
| 3027 | com_addbyte(c, DUP_TOP); |
| 3028 | com_push(c, 1); |
| 3029 | com_addopname(c, LOAD_ATTR, n); |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3030 | com_node(c, augn); |
| 3031 | com_addbyte(c, opcode); |
| 3032 | com_pop(c, 1); |
| 3033 | com_addbyte(c, ROT_TWO); |
| 3034 | com_addopname(c, STORE_ATTR, n); |
| 3035 | com_pop(c, 2); |
| 3036 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3037 | |
| 3038 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3039 | com_assign_attr(struct compiling *c, node *n, int assigning) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3040 | { |
Guido van Rossum | 3ac99d4 | 2002-08-16 02:13:49 +0000 | [diff] [blame] | 3041 | if (none_assignment_check(c, STR(n), assigning)) |
| 3042 | return; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3043 | com_addopname(c, assigning ? STORE_ATTR : DELETE_ATTR, n); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3044 | com_pop(c, assigning ? 2 : 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3045 | } |
| 3046 | |
| 3047 | static void |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3048 | com_assign_trailer(struct compiling *c, node *n, int assigning, node *augn) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3049 | { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3050 | REQ(n, trailer); |
| 3051 | switch (TYPE(CHILD(n, 0))) { |
| 3052 | case LPAR: /* '(' [exprlist] ')' */ |
Jeremy Hylton | 05ab2e6 | 2002-05-31 14:08:29 +0000 | [diff] [blame] | 3053 | if (assigning == OP_DELETE) |
| 3054 | com_error(c, PyExc_SyntaxError, |
| 3055 | "can't delete function call"); |
| 3056 | else |
| 3057 | com_error(c, PyExc_SyntaxError, |
| 3058 | "can't assign to function call"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3059 | break; |
| 3060 | case DOT: /* '.' NAME */ |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3061 | if (assigning > OP_APPLY) |
| 3062 | com_augassign_attr(c, CHILD(n, 1), assigning, augn); |
| 3063 | else |
| 3064 | com_assign_attr(c, CHILD(n, 1), assigning); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3065 | break; |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 3066 | case LSQB: /* '[' subscriptlist ']' */ |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3067 | com_subscriptlist(c, CHILD(n, 1), assigning, augn); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3068 | break; |
| 3069 | default: |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3070 | com_error(c, PyExc_SystemError, "unknown trailer type"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3071 | } |
| 3072 | } |
| 3073 | |
| 3074 | static void |
Thomas Wouters | 0be5aab | 2000-08-11 22:15:52 +0000 | [diff] [blame] | 3075 | com_assign_sequence(struct compiling *c, node *n, int assigning) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3076 | { |
| 3077 | int i; |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 3078 | if (TYPE(n) != testlist && TYPE(n) != testlist_gexp && |
| 3079 | TYPE(n) != listmaker) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3080 | REQ(n, exprlist); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3081 | if (assigning) { |
| 3082 | i = (NCH(n)+1)/2; |
Thomas Wouters | 0be5aab | 2000-08-11 22:15:52 +0000 | [diff] [blame] | 3083 | com_addoparg(c, UNPACK_SEQUENCE, i); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3084 | com_push(c, i-1); |
| 3085 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3086 | for (i = 0; i < NCH(n); i += 2) |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3087 | com_assign(c, CHILD(n, i), assigning, NULL); |
| 3088 | } |
| 3089 | |
| 3090 | static void |
| 3091 | com_augassign_name(struct compiling *c, node *n, int opcode, node *augn) |
| 3092 | { |
| 3093 | REQ(n, NAME); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3094 | com_addop_varname(c, VAR_LOAD, STR(n)); |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3095 | com_push(c, 1); |
| 3096 | com_node(c, augn); |
| 3097 | com_addbyte(c, opcode); |
| 3098 | com_pop(c, 1); |
| 3099 | com_assign_name(c, n, OP_ASSIGN); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3100 | } |
| 3101 | |
| 3102 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3103 | com_assign_name(struct compiling *c, node *n, int assigning) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3104 | { |
| 3105 | REQ(n, NAME); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3106 | com_addop_varname(c, assigning ? VAR_STORE : VAR_DELETE, STR(n)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3107 | if (assigning) |
| 3108 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3109 | } |
| 3110 | |
| 3111 | static void |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3112 | com_assign(struct compiling *c, node *n, int assigning, node *augn) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3113 | { |
| 3114 | /* Loop to avoid trivial recursion */ |
| 3115 | for (;;) { |
| 3116 | switch (TYPE(n)) { |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 3117 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3118 | case exprlist: |
| 3119 | case testlist: |
Guido van Rossum | 2d3b986 | 2002-05-24 15:47:06 +0000 | [diff] [blame] | 3120 | case testlist1: |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 3121 | case testlist_gexp: |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3122 | if (NCH(n) > 1) { |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 3123 | if (TYPE(CHILD(n, 1)) == gen_for) { |
| 3124 | com_error(c, PyExc_SystemError, |
| 3125 | "assign to generator expression not possible"); |
| 3126 | return; |
| 3127 | } |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3128 | if (assigning > OP_APPLY) { |
| 3129 | com_error(c, PyExc_SyntaxError, |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 3130 | "augmented assign to tuple not possible"); |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3131 | return; |
| 3132 | } |
Thomas Wouters | 0be5aab | 2000-08-11 22:15:52 +0000 | [diff] [blame] | 3133 | com_assign_sequence(c, n, assigning); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3134 | return; |
| 3135 | } |
| 3136 | n = CHILD(n, 0); |
| 3137 | break; |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 3138 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3139 | case test: |
| 3140 | case and_test: |
| 3141 | case not_test: |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3142 | case comparison: |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3143 | case expr: |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 3144 | case xor_expr: |
| 3145 | case and_expr: |
| 3146 | case shift_expr: |
| 3147 | case arith_expr: |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3148 | case term: |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 3149 | case factor: |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3150 | if (NCH(n) > 1) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3151 | com_error(c, PyExc_SyntaxError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 3152 | "can't assign to operator"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3153 | return; |
| 3154 | } |
| 3155 | n = CHILD(n, 0); |
| 3156 | break; |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 3157 | |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 3158 | case power: /* atom trailer* ('**' power)* |
| 3159 | ('+'|'-'|'~') factor | atom trailer* */ |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 3160 | if (TYPE(CHILD(n, 0)) != atom) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3161 | com_error(c, PyExc_SyntaxError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 3162 | "can't assign to operator"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3163 | return; |
| 3164 | } |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 3165 | if (NCH(n) > 1) { /* trailer or exponent present */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3166 | int i; |
| 3167 | com_node(c, CHILD(n, 0)); |
| 3168 | for (i = 1; i+1 < NCH(n); i++) { |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 3169 | if (TYPE(CHILD(n, i)) == DOUBLESTAR) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3170 | com_error(c, PyExc_SyntaxError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 3171 | "can't assign to operator"); |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 3172 | return; |
| 3173 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3174 | com_apply_trailer(c, CHILD(n, i)); |
| 3175 | } /* NB i is still alive */ |
| 3176 | com_assign_trailer(c, |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3177 | CHILD(n, i), assigning, augn); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3178 | return; |
| 3179 | } |
| 3180 | n = CHILD(n, 0); |
| 3181 | break; |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 3182 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3183 | case atom: |
| 3184 | switch (TYPE(CHILD(n, 0))) { |
| 3185 | case LPAR: |
| 3186 | n = CHILD(n, 1); |
| 3187 | if (TYPE(n) == RPAR) { |
| 3188 | /* XXX Should allow () = () ??? */ |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3189 | com_error(c, PyExc_SyntaxError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 3190 | "can't assign to ()"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3191 | return; |
| 3192 | } |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3193 | if (assigning > OP_APPLY) { |
| 3194 | com_error(c, PyExc_SyntaxError, |
Neal Norwitz | a1d654e | 2003-05-22 22:00:04 +0000 | [diff] [blame] | 3195 | "augmented assign to tuple literal not possible"); |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3196 | return; |
| 3197 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3198 | break; |
| 3199 | case LSQB: |
| 3200 | n = CHILD(n, 1); |
| 3201 | if (TYPE(n) == RSQB) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3202 | com_error(c, PyExc_SyntaxError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 3203 | "can't assign to []"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3204 | return; |
| 3205 | } |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3206 | if (assigning > OP_APPLY) { |
| 3207 | com_error(c, PyExc_SyntaxError, |
Neal Norwitz | a1d654e | 2003-05-22 22:00:04 +0000 | [diff] [blame] | 3208 | "augmented assign to list literal not possible"); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3209 | return; |
| 3210 | } |
| 3211 | if (NCH(n) > 1 |
| 3212 | && TYPE(CHILD(n, 1)) == list_for) { |
| 3213 | com_error(c, PyExc_SyntaxError, |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3214 | "can't assign to list comprehension"); |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3215 | return; |
| 3216 | } |
Thomas Wouters | 0be5aab | 2000-08-11 22:15:52 +0000 | [diff] [blame] | 3217 | com_assign_sequence(c, n, assigning); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3218 | return; |
| 3219 | case NAME: |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3220 | if (assigning > OP_APPLY) |
| 3221 | com_augassign_name(c, CHILD(n, 0), |
| 3222 | assigning, augn); |
| 3223 | else |
| 3224 | com_assign_name(c, CHILD(n, 0), |
| 3225 | assigning); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3226 | return; |
| 3227 | default: |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3228 | com_error(c, PyExc_SyntaxError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 3229 | "can't assign to literal"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3230 | return; |
| 3231 | } |
| 3232 | break; |
Guido van Rossum | 15cc9a0 | 1996-08-08 18:51:04 +0000 | [diff] [blame] | 3233 | |
| 3234 | case lambdef: |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3235 | com_error(c, PyExc_SyntaxError, |
| 3236 | "can't assign to lambda"); |
Guido van Rossum | 15cc9a0 | 1996-08-08 18:51:04 +0000 | [diff] [blame] | 3237 | return; |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 3238 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3239 | default: |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3240 | com_error(c, PyExc_SystemError, |
| 3241 | "com_assign: bad node"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3242 | return; |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 3243 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3244 | } |
| 3245 | } |
| 3246 | } |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 3247 | |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3248 | static void |
| 3249 | com_augassign(struct compiling *c, node *n) |
| 3250 | { |
| 3251 | int opcode; |
| 3252 | |
| 3253 | switch (STR(CHILD(CHILD(n, 1), 0))[0]) { |
| 3254 | case '+': opcode = INPLACE_ADD; break; |
| 3255 | case '-': opcode = INPLACE_SUBTRACT; break; |
Guido van Rossum | 4668b00 | 2001-08-08 05:00:18 +0000 | [diff] [blame] | 3256 | case '/': |
| 3257 | if (STR(CHILD(CHILD(n, 1), 0))[1] == '/') |
| 3258 | opcode = INPLACE_FLOOR_DIVIDE; |
| 3259 | else if (c->c_flags & CO_FUTURE_DIVISION) |
| 3260 | opcode = INPLACE_TRUE_DIVIDE; |
| 3261 | else |
| 3262 | opcode = INPLACE_DIVIDE; |
| 3263 | break; |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3264 | case '%': opcode = INPLACE_MODULO; break; |
| 3265 | case '<': opcode = INPLACE_LSHIFT; break; |
| 3266 | case '>': opcode = INPLACE_RSHIFT; break; |
| 3267 | case '&': opcode = INPLACE_AND; break; |
| 3268 | case '^': opcode = INPLACE_XOR; break; |
| 3269 | case '|': opcode = INPLACE_OR; break; |
| 3270 | case '*': |
| 3271 | if (STR(CHILD(CHILD(n, 1), 0))[1] == '*') |
| 3272 | opcode = INPLACE_POWER; |
| 3273 | else |
| 3274 | opcode = INPLACE_MULTIPLY; |
| 3275 | break; |
| 3276 | default: |
| 3277 | com_error(c, PyExc_SystemError, "com_augassign: bad operator"); |
| 3278 | return; |
| 3279 | } |
| 3280 | com_assign(c, CHILD(n, 0), opcode, CHILD(n, 2)); |
| 3281 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3282 | |
| 3283 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3284 | com_expr_stmt(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3285 | { |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3286 | REQ(n, expr_stmt); |
| 3287 | /* testlist (('=' testlist)* | augassign testlist) */ |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3288 | /* Forget it if we have just a doc string here */ |
Guido van Rossum | 5f5e817 | 1997-04-06 03:41:40 +0000 | [diff] [blame] | 3289 | if (!c->c_interactive && NCH(n) == 1 && get_rawdocstring(n) != NULL) |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3290 | return; |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3291 | if (NCH(n) == 1) { |
| 3292 | com_node(c, CHILD(n, NCH(n)-1)); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3293 | if (c->c_interactive) |
| 3294 | com_addbyte(c, PRINT_EXPR); |
| 3295 | else |
| 3296 | com_addbyte(c, POP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3297 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3298 | } |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3299 | else if (TYPE(CHILD(n,1)) == augassign) |
| 3300 | com_augassign(c, n); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3301 | else { |
| 3302 | int i; |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3303 | com_node(c, CHILD(n, NCH(n)-1)); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 3304 | for (i = 0; i < NCH(n)-2; i+=2) { |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3305 | if (i+2 < NCH(n)-2) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3306 | com_addbyte(c, DUP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3307 | com_push(c, 1); |
| 3308 | } |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3309 | com_assign(c, CHILD(n, i), OP_ASSIGN, NULL); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3310 | } |
| 3311 | } |
| 3312 | } |
| 3313 | |
| 3314 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3315 | com_assert_stmt(struct compiling *c, node *n) |
Guido van Rossum | 228d7f3 | 1997-04-02 05:24:36 +0000 | [diff] [blame] | 3316 | { |
Neil Schemenauer | 89e3ee0 | 2002-04-26 01:58:53 +0000 | [diff] [blame] | 3317 | int a = 0; |
Guido van Rossum | 228d7f3 | 1997-04-02 05:24:36 +0000 | [diff] [blame] | 3318 | int i; |
| 3319 | REQ(n, assert_stmt); /* 'assert' test [',' test] */ |
Neil Schemenauer | 89e3ee0 | 2002-04-26 01:58:53 +0000 | [diff] [blame] | 3320 | if (Py_OptimizeFlag) |
| 3321 | return; |
| 3322 | /* Generate code like |
Guido van Rossum | 228d7f3 | 1997-04-02 05:24:36 +0000 | [diff] [blame] | 3323 | |
Neil Schemenauer | 89e3ee0 | 2002-04-26 01:58:53 +0000 | [diff] [blame] | 3324 | if not <test>: |
Guido van Rossum | 228d7f3 | 1997-04-02 05:24:36 +0000 | [diff] [blame] | 3325 | raise AssertionError [, <message>] |
| 3326 | |
| 3327 | where <message> is the second test, if present. |
| 3328 | */ |
Guido van Rossum | 228d7f3 | 1997-04-02 05:24:36 +0000 | [diff] [blame] | 3329 | com_node(c, CHILD(n, 1)); |
Neil Schemenauer | 89e3ee0 | 2002-04-26 01:58:53 +0000 | [diff] [blame] | 3330 | com_addfwref(c, JUMP_IF_TRUE, &a); |
Guido van Rossum | 228d7f3 | 1997-04-02 05:24:36 +0000 | [diff] [blame] | 3331 | com_addbyte(c, POP_TOP); |
| 3332 | com_pop(c, 1); |
| 3333 | /* Raise that exception! */ |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3334 | com_addop_name(c, LOAD_GLOBAL, "AssertionError"); |
Guido van Rossum | 228d7f3 | 1997-04-02 05:24:36 +0000 | [diff] [blame] | 3335 | com_push(c, 1); |
| 3336 | i = NCH(n)/2; /* Either 2 or 4 */ |
| 3337 | if (i > 1) |
| 3338 | com_node(c, CHILD(n, 3)); |
| 3339 | com_addoparg(c, RAISE_VARARGS, i); |
| 3340 | com_pop(c, i); |
| 3341 | /* The interpreter does not fall through */ |
Neil Schemenauer | 89e3ee0 | 2002-04-26 01:58:53 +0000 | [diff] [blame] | 3342 | /* Jump ends up here */ |
Guido van Rossum | 228d7f3 | 1997-04-02 05:24:36 +0000 | [diff] [blame] | 3343 | com_backpatch(c, a); |
Guido van Rossum | 228d7f3 | 1997-04-02 05:24:36 +0000 | [diff] [blame] | 3344 | com_addbyte(c, POP_TOP); |
| 3345 | } |
| 3346 | |
| 3347 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3348 | com_print_stmt(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3349 | { |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 3350 | int i = 1; |
| 3351 | node* stream = NULL; |
| 3352 | |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 3353 | REQ(n, print_stmt); /* 'print' (test ',')* [test] */ |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 3354 | |
| 3355 | /* are we using the extended print form? */ |
| 3356 | if (NCH(n) >= 2 && TYPE(CHILD(n, 1)) == RIGHTSHIFT) { |
| 3357 | stream = CHILD(n, 2); |
Barry Warsaw | 24703a0 | 2000-08-21 17:07:20 +0000 | [diff] [blame] | 3358 | com_node(c, stream); |
| 3359 | /* stack: [...] => [... stream] */ |
| 3360 | com_push(c, 1); |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 3361 | if (NCH(n) > 3 && TYPE(CHILD(n, 3)) == COMMA) |
| 3362 | i = 4; |
| 3363 | else |
| 3364 | i = 3; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3365 | } |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 3366 | for (; i < NCH(n); i += 2) { |
| 3367 | if (stream != NULL) { |
Barry Warsaw | 24703a0 | 2000-08-21 17:07:20 +0000 | [diff] [blame] | 3368 | com_addbyte(c, DUP_TOP); |
| 3369 | /* stack: [stream] => [stream stream] */ |
| 3370 | com_push(c, 1); |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 3371 | com_node(c, CHILD(n, i)); |
Barry Warsaw | 24703a0 | 2000-08-21 17:07:20 +0000 | [diff] [blame] | 3372 | /* stack: [stream stream] => [stream stream obj] */ |
| 3373 | com_addbyte(c, ROT_TWO); |
| 3374 | /* stack: [stream stream obj] => [stream obj stream] */ |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 3375 | com_addbyte(c, PRINT_ITEM_TO); |
Barry Warsaw | 24703a0 | 2000-08-21 17:07:20 +0000 | [diff] [blame] | 3376 | /* stack: [stream obj stream] => [stream] */ |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 3377 | com_pop(c, 2); |
| 3378 | } |
| 3379 | else { |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 3380 | com_node(c, CHILD(n, i)); |
Barry Warsaw | 24703a0 | 2000-08-21 17:07:20 +0000 | [diff] [blame] | 3381 | /* stack: [...] => [... obj] */ |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 3382 | com_addbyte(c, PRINT_ITEM); |
| 3383 | com_pop(c, 1); |
| 3384 | } |
| 3385 | } |
| 3386 | /* XXX Alternatively, LOAD_CONST '\n' and then PRINT_ITEM */ |
Barry Warsaw | 24703a0 | 2000-08-21 17:07:20 +0000 | [diff] [blame] | 3387 | if (TYPE(CHILD(n, NCH(n)-1)) == COMMA) { |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 3388 | if (stream != NULL) { |
Barry Warsaw | 24703a0 | 2000-08-21 17:07:20 +0000 | [diff] [blame] | 3389 | /* must pop the extra stream object off the stack */ |
| 3390 | com_addbyte(c, POP_TOP); |
| 3391 | /* stack: [... stream] => [...] */ |
| 3392 | com_pop(c, 1); |
| 3393 | } |
| 3394 | } |
| 3395 | else { |
| 3396 | if (stream != NULL) { |
| 3397 | /* this consumes the last stream object on stack */ |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 3398 | com_addbyte(c, PRINT_NEWLINE_TO); |
Barry Warsaw | 24703a0 | 2000-08-21 17:07:20 +0000 | [diff] [blame] | 3399 | /* stack: [... stream] => [...] */ |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 3400 | com_pop(c, 1); |
| 3401 | } |
| 3402 | else |
| 3403 | com_addbyte(c, PRINT_NEWLINE); |
| 3404 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3405 | } |
| 3406 | |
| 3407 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3408 | com_return_stmt(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3409 | { |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 3410 | REQ(n, return_stmt); /* 'return' [testlist] */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 3411 | if (!c->c_infunction) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3412 | com_error(c, PyExc_SyntaxError, "'return' outside function"); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 3413 | } |
Tim Peters | 5ca576e | 2001-06-18 22:08:13 +0000 | [diff] [blame] | 3414 | if (c->c_flags & CO_GENERATOR) { |
| 3415 | if (NCH(n) > 1) { |
| 3416 | com_error(c, PyExc_SyntaxError, |
| 3417 | "'return' with argument inside generator"); |
| 3418 | } |
Tim Peters | ad1a18b | 2001-06-23 06:19:16 +0000 | [diff] [blame] | 3419 | } |
| 3420 | if (NCH(n) < 2) { |
| 3421 | com_addoparg(c, LOAD_CONST, com_addconst(c, Py_None)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3422 | com_push(c, 1); |
| 3423 | } |
Tim Peters | ad1a18b | 2001-06-23 06:19:16 +0000 | [diff] [blame] | 3424 | else |
| 3425 | com_node(c, CHILD(n, 1)); |
| 3426 | com_addbyte(c, RETURN_VALUE); |
Tim Peters | 5ca576e | 2001-06-18 22:08:13 +0000 | [diff] [blame] | 3427 | com_pop(c, 1); |
| 3428 | } |
| 3429 | |
| 3430 | static void |
| 3431 | com_yield_stmt(struct compiling *c, node *n) |
| 3432 | { |
Tim Peters | 95c80f8 | 2001-06-23 02:07:08 +0000 | [diff] [blame] | 3433 | int i; |
Tim Peters | 5ca576e | 2001-06-18 22:08:13 +0000 | [diff] [blame] | 3434 | REQ(n, yield_stmt); /* 'yield' testlist */ |
| 3435 | if (!c->c_infunction) { |
| 3436 | com_error(c, PyExc_SyntaxError, "'yield' outside function"); |
| 3437 | } |
Tim Peters | 95c80f8 | 2001-06-23 02:07:08 +0000 | [diff] [blame] | 3438 | |
| 3439 | for (i = 0; i < c->c_nblocks; ++i) { |
| 3440 | if (c->c_block[i] == SETUP_FINALLY) { |
| 3441 | com_error(c, PyExc_SyntaxError, |
| 3442 | "'yield' not allowed in a 'try' block " |
| 3443 | "with a 'finally' clause"); |
| 3444 | return; |
| 3445 | } |
| 3446 | } |
Tim Peters | 5ca576e | 2001-06-18 22:08:13 +0000 | [diff] [blame] | 3447 | com_node(c, CHILD(n, 1)); |
| 3448 | com_addbyte(c, YIELD_VALUE); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3449 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3450 | } |
| 3451 | |
| 3452 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3453 | com_raise_stmt(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3454 | { |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3455 | int i; |
Guido van Rossum | d295f12 | 1998-04-09 21:39:57 +0000 | [diff] [blame] | 3456 | REQ(n, raise_stmt); /* 'raise' [test [',' test [',' test]]] */ |
| 3457 | if (NCH(n) > 1) { |
| 3458 | com_node(c, CHILD(n, 1)); |
| 3459 | if (NCH(n) > 3) { |
| 3460 | com_node(c, CHILD(n, 3)); |
| 3461 | if (NCH(n) > 5) |
| 3462 | com_node(c, CHILD(n, 5)); |
| 3463 | } |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 3464 | } |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3465 | i = NCH(n)/2; |
| 3466 | com_addoparg(c, RAISE_VARARGS, i); |
| 3467 | com_pop(c, i); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3468 | } |
| 3469 | |
| 3470 | static void |
Thomas Wouters | 5215225 | 2000-08-17 22:55:00 +0000 | [diff] [blame] | 3471 | com_from_import(struct compiling *c, node *n) |
| 3472 | { |
| 3473 | com_addopname(c, IMPORT_FROM, CHILD(n, 0)); |
| 3474 | com_push(c, 1); |
| 3475 | if (NCH(n) > 1) { |
| 3476 | if (strcmp(STR(CHILD(n, 1)), "as") != 0) { |
| 3477 | com_error(c, PyExc_SyntaxError, "invalid syntax"); |
| 3478 | return; |
| 3479 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3480 | com_addop_varname(c, VAR_STORE, STR(CHILD(n, 2))); |
Thomas Wouters | 5215225 | 2000-08-17 22:55:00 +0000 | [diff] [blame] | 3481 | } else |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3482 | com_addop_varname(c, VAR_STORE, STR(CHILD(n, 0))); |
Thomas Wouters | 5215225 | 2000-08-17 22:55:00 +0000 | [diff] [blame] | 3483 | com_pop(c, 1); |
| 3484 | } |
| 3485 | |
| 3486 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3487 | com_import_stmt(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3488 | { |
| 3489 | int i; |
| 3490 | REQ(n, import_stmt); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3491 | /* 'import' dotted_name (',' dotted_name)* | |
| 3492 | 'from' dotted_name 'import' ('*' | NAME (',' NAME)*) */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3493 | if (STR(CHILD(n, 0))[0] == 'f') { |
Guido van Rossum | 83fb073 | 2000-11-27 22:22:36 +0000 | [diff] [blame] | 3494 | PyObject *tup; |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3495 | /* 'from' dotted_name 'import' ... */ |
| 3496 | REQ(CHILD(n, 1), dotted_name); |
Thomas Wouters | dd13e4f | 2000-08-27 20:31:27 +0000 | [diff] [blame] | 3497 | |
| 3498 | if (TYPE(CHILD(n, 3)) == STAR) { |
| 3499 | tup = Py_BuildValue("(s)", "*"); |
| 3500 | } else { |
| 3501 | tup = PyTuple_New((NCH(n) - 2)/2); |
| 3502 | for (i = 3; i < NCH(n); i += 2) { |
| 3503 | PyTuple_SET_ITEM(tup, (i-3)/2, |
Guido van Rossum | 633d90c | 2002-12-23 16:51:42 +0000 | [diff] [blame] | 3504 | PyString_FromString(STR( |
| 3505 | CHILD(CHILD(n, i), 0)))); |
Thomas Wouters | dd13e4f | 2000-08-27 20:31:27 +0000 | [diff] [blame] | 3506 | } |
| 3507 | } |
| 3508 | com_addoparg(c, LOAD_CONST, com_addconst(c, tup)); |
Guido van Rossum | 83fb073 | 2000-11-27 22:22:36 +0000 | [diff] [blame] | 3509 | Py_DECREF(tup); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3510 | com_push(c, 1); |
Thomas Wouters | dd13e4f | 2000-08-27 20:31:27 +0000 | [diff] [blame] | 3511 | com_addopname(c, IMPORT_NAME, CHILD(n, 1)); |
Thomas Wouters | 5215225 | 2000-08-17 22:55:00 +0000 | [diff] [blame] | 3512 | if (TYPE(CHILD(n, 3)) == STAR) |
| 3513 | com_addbyte(c, IMPORT_STAR); |
| 3514 | else { |
| 3515 | for (i = 3; i < NCH(n); i += 2) |
| 3516 | com_from_import(c, CHILD(n, i)); |
| 3517 | com_addbyte(c, POP_TOP); |
| 3518 | } |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3519 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3520 | } |
| 3521 | else { |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 3522 | /* 'import' ... */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3523 | for (i = 1; i < NCH(n); i += 2) { |
Thomas Wouters | 5215225 | 2000-08-17 22:55:00 +0000 | [diff] [blame] | 3524 | node *subn = CHILD(n, i); |
| 3525 | REQ(subn, dotted_as_name); |
Thomas Wouters | dd13e4f | 2000-08-27 20:31:27 +0000 | [diff] [blame] | 3526 | com_addoparg(c, LOAD_CONST, com_addconst(c, Py_None)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3527 | com_push(c, 1); |
Thomas Wouters | dd13e4f | 2000-08-27 20:31:27 +0000 | [diff] [blame] | 3528 | com_addopname(c, IMPORT_NAME, CHILD(subn, 0)); |
Thomas Wouters | 5215225 | 2000-08-17 22:55:00 +0000 | [diff] [blame] | 3529 | if (NCH(subn) > 1) { |
Thomas Wouters | e753ef8 | 2000-08-27 20:16:32 +0000 | [diff] [blame] | 3530 | int j; |
| 3531 | if (strcmp(STR(CHILD(subn, 1)), "as") != 0) { |
Thomas Wouters | 5215225 | 2000-08-17 22:55:00 +0000 | [diff] [blame] | 3532 | com_error(c, PyExc_SyntaxError, |
| 3533 | "invalid syntax"); |
| 3534 | return; |
| 3535 | } |
Thomas Wouters | e753ef8 | 2000-08-27 20:16:32 +0000 | [diff] [blame] | 3536 | for (j=2 ; j < NCH(CHILD(subn, 0)); j += 2) |
| 3537 | com_addopname(c, LOAD_ATTR, |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3538 | CHILD(CHILD(subn, 0), |
| 3539 | j)); |
| 3540 | com_addop_varname(c, VAR_STORE, |
| 3541 | STR(CHILD(subn, 2))); |
Thomas Wouters | 5215225 | 2000-08-17 22:55:00 +0000 | [diff] [blame] | 3542 | } else |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3543 | com_addop_varname(c, VAR_STORE, |
| 3544 | STR(CHILD(CHILD(subn, 0), |
| 3545 | 0))); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3546 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3547 | } |
| 3548 | } |
| 3549 | } |
| 3550 | |
| 3551 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3552 | com_exec_stmt(struct compiling *c, node *n) |
Guido van Rossum | db3165e | 1993-10-18 17:06:59 +0000 | [diff] [blame] | 3553 | { |
| 3554 | REQ(n, exec_stmt); |
| 3555 | /* exec_stmt: 'exec' expr ['in' expr [',' expr]] */ |
| 3556 | com_node(c, CHILD(n, 1)); |
| 3557 | if (NCH(n) >= 4) |
| 3558 | com_node(c, CHILD(n, 3)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3559 | else { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3560 | com_addoparg(c, LOAD_CONST, com_addconst(c, Py_None)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3561 | com_push(c, 1); |
| 3562 | } |
Guido van Rossum | db3165e | 1993-10-18 17:06:59 +0000 | [diff] [blame] | 3563 | if (NCH(n) >= 6) |
| 3564 | com_node(c, CHILD(n, 5)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3565 | else { |
Guido van Rossum | db3165e | 1993-10-18 17:06:59 +0000 | [diff] [blame] | 3566 | com_addbyte(c, DUP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3567 | com_push(c, 1); |
| 3568 | } |
Guido van Rossum | db3165e | 1993-10-18 17:06:59 +0000 | [diff] [blame] | 3569 | com_addbyte(c, EXEC_STMT); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3570 | com_pop(c, 3); |
Guido van Rossum | db3165e | 1993-10-18 17:06:59 +0000 | [diff] [blame] | 3571 | } |
| 3572 | |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 3573 | static int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3574 | is_constant_false(struct compiling *c, node *n) |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 3575 | { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3576 | PyObject *v; |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 3577 | int i; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3578 | /* argument c will be NULL when called from symtable_node() */ |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 3579 | |
| 3580 | /* Label to avoid tail recursion */ |
| 3581 | next: |
| 3582 | switch (TYPE(n)) { |
| 3583 | |
| 3584 | case suite: |
| 3585 | if (NCH(n) == 1) { |
| 3586 | n = CHILD(n, 0); |
| 3587 | goto next; |
| 3588 | } |
| 3589 | /* Fall through */ |
| 3590 | case file_input: |
| 3591 | for (i = 0; i < NCH(n); i++) { |
| 3592 | node *ch = CHILD(n, i); |
| 3593 | if (TYPE(ch) == stmt) { |
| 3594 | n = ch; |
| 3595 | goto next; |
| 3596 | } |
| 3597 | } |
| 3598 | break; |
| 3599 | |
| 3600 | case stmt: |
| 3601 | case simple_stmt: |
| 3602 | case small_stmt: |
| 3603 | n = CHILD(n, 0); |
| 3604 | goto next; |
| 3605 | |
| 3606 | case expr_stmt: |
| 3607 | case testlist: |
Guido van Rossum | 2d3b986 | 2002-05-24 15:47:06 +0000 | [diff] [blame] | 3608 | case testlist1: |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 3609 | case test: |
| 3610 | case and_test: |
| 3611 | case not_test: |
| 3612 | case comparison: |
| 3613 | case expr: |
| 3614 | case xor_expr: |
| 3615 | case and_expr: |
| 3616 | case shift_expr: |
| 3617 | case arith_expr: |
| 3618 | case term: |
| 3619 | case factor: |
| 3620 | case power: |
| 3621 | case atom: |
| 3622 | if (NCH(n) == 1) { |
| 3623 | n = CHILD(n, 0); |
| 3624 | goto next; |
| 3625 | } |
| 3626 | break; |
| 3627 | |
| 3628 | case NAME: |
| 3629 | if (Py_OptimizeFlag && strcmp(STR(n), "__debug__") == 0) |
| 3630 | return 1; |
| 3631 | break; |
| 3632 | |
| 3633 | case NUMBER: |
| 3634 | v = parsenumber(c, STR(n)); |
| 3635 | if (v == NULL) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3636 | PyErr_Clear(); |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 3637 | break; |
| 3638 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3639 | i = PyObject_IsTrue(v); |
| 3640 | Py_DECREF(v); |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 3641 | return i == 0; |
| 3642 | |
| 3643 | case STRING: |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 3644 | v = parsestr(c, STR(n)); |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 3645 | if (v == NULL) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3646 | PyErr_Clear(); |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 3647 | break; |
| 3648 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3649 | i = PyObject_IsTrue(v); |
| 3650 | Py_DECREF(v); |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 3651 | return i == 0; |
| 3652 | |
| 3653 | } |
| 3654 | return 0; |
| 3655 | } |
| 3656 | |
Tim Peters | 08a898f | 2001-06-28 01:52:22 +0000 | [diff] [blame] | 3657 | |
| 3658 | /* Look under n for a return stmt with an expression. |
| 3659 | * This hack is used to find illegal returns under "if 0:" blocks in |
| 3660 | * functions already known to be generators (as determined by the symtable |
| 3661 | * pass). |
| 3662 | * Return the offending return node if found, else NULL. |
| 3663 | */ |
| 3664 | static node * |
| 3665 | look_for_offending_return(node *n) |
| 3666 | { |
| 3667 | int i; |
| 3668 | |
| 3669 | for (i = 0; i < NCH(n); ++i) { |
| 3670 | node *kid = CHILD(n, i); |
| 3671 | |
| 3672 | switch (TYPE(kid)) { |
| 3673 | case classdef: |
| 3674 | case funcdef: |
| 3675 | case lambdef: |
| 3676 | /* Stuff in nested functions & classes doesn't |
| 3677 | affect the code block we started in. */ |
| 3678 | return NULL; |
| 3679 | |
| 3680 | case return_stmt: |
| 3681 | if (NCH(kid) > 1) |
| 3682 | return kid; |
| 3683 | break; |
| 3684 | |
| 3685 | default: { |
| 3686 | node *bad = look_for_offending_return(kid); |
| 3687 | if (bad != NULL) |
| 3688 | return bad; |
| 3689 | } |
| 3690 | } |
| 3691 | } |
| 3692 | |
| 3693 | return NULL; |
| 3694 | } |
| 3695 | |
Guido van Rossum | db3165e | 1993-10-18 17:06:59 +0000 | [diff] [blame] | 3696 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3697 | com_if_stmt(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3698 | { |
| 3699 | int i; |
| 3700 | int anchor = 0; |
| 3701 | REQ(n, if_stmt); |
| 3702 | /*'if' test ':' suite ('elif' test ':' suite)* ['else' ':' suite] */ |
| 3703 | for (i = 0; i+3 < NCH(n); i+=4) { |
| 3704 | int a = 0; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 3705 | node *ch = CHILD(n, i+1); |
Tim Peters | 08a898f | 2001-06-28 01:52:22 +0000 | [diff] [blame] | 3706 | if (is_constant_false(c, ch)) { |
| 3707 | /* We're going to skip this block. However, if this |
| 3708 | is a generator, we have to check the dead code |
| 3709 | anyway to make sure there aren't any return stmts |
| 3710 | with expressions, in the same scope. */ |
| 3711 | if (c->c_flags & CO_GENERATOR) { |
| 3712 | node *p = look_for_offending_return(n); |
| 3713 | if (p != NULL) { |
| 3714 | int savelineno = c->c_lineno; |
| 3715 | c->c_lineno = p->n_lineno; |
| 3716 | com_error(c, PyExc_SyntaxError, |
| 3717 | "'return' with argument " |
| 3718 | "inside generator"); |
| 3719 | c->c_lineno = savelineno; |
| 3720 | } |
| 3721 | } |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 3722 | continue; |
Tim Peters | 08a898f | 2001-06-28 01:52:22 +0000 | [diff] [blame] | 3723 | } |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 3724 | if (i > 0) |
Michael W. Hudson | dd32a91 | 2002-08-15 14:59:02 +0000 | [diff] [blame] | 3725 | com_set_lineno(c, ch->n_lineno); |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 3726 | com_node(c, ch); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3727 | com_addfwref(c, JUMP_IF_FALSE, &a); |
| 3728 | com_addbyte(c, POP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3729 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3730 | com_node(c, CHILD(n, i+3)); |
| 3731 | com_addfwref(c, JUMP_FORWARD, &anchor); |
| 3732 | com_backpatch(c, a); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3733 | /* We jump here with an extra entry which we now pop */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3734 | com_addbyte(c, POP_TOP); |
| 3735 | } |
| 3736 | if (i+2 < NCH(n)) |
| 3737 | com_node(c, CHILD(n, i+2)); |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 3738 | if (anchor) |
| 3739 | com_backpatch(c, anchor); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3740 | } |
| 3741 | |
| 3742 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3743 | com_while_stmt(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3744 | { |
| 3745 | int break_anchor = 0; |
| 3746 | int anchor = 0; |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 3747 | int save_begin = c->c_begin; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3748 | REQ(n, while_stmt); /* 'while' test ':' suite ['else' ':' suite] */ |
| 3749 | com_addfwref(c, SETUP_LOOP, &break_anchor); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 3750 | block_push(c, SETUP_LOOP); |
| 3751 | c->c_begin = c->c_nexti; |
Michael W. Hudson | dd32a91 | 2002-08-15 14:59:02 +0000 | [diff] [blame] | 3752 | com_set_lineno(c, n->n_lineno); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3753 | com_node(c, CHILD(n, 1)); |
| 3754 | com_addfwref(c, JUMP_IF_FALSE, &anchor); |
| 3755 | com_addbyte(c, POP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3756 | com_pop(c, 1); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 3757 | c->c_loops++; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3758 | com_node(c, CHILD(n, 3)); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 3759 | c->c_loops--; |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 3760 | com_addoparg(c, JUMP_ABSOLUTE, c->c_begin); |
| 3761 | c->c_begin = save_begin; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3762 | com_backpatch(c, anchor); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3763 | /* We jump here with one entry more on the stack */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3764 | com_addbyte(c, POP_TOP); |
| 3765 | com_addbyte(c, POP_BLOCK); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 3766 | block_pop(c, SETUP_LOOP); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3767 | if (NCH(n) > 4) |
| 3768 | com_node(c, CHILD(n, 6)); |
| 3769 | com_backpatch(c, break_anchor); |
| 3770 | } |
| 3771 | |
| 3772 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3773 | com_for_stmt(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3774 | { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3775 | int break_anchor = 0; |
| 3776 | int anchor = 0; |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 3777 | int save_begin = c->c_begin; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3778 | REQ(n, for_stmt); |
| 3779 | /* 'for' exprlist 'in' exprlist ':' suite ['else' ':' suite] */ |
| 3780 | com_addfwref(c, SETUP_LOOP, &break_anchor); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 3781 | block_push(c, SETUP_LOOP); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3782 | com_node(c, CHILD(n, 3)); |
Guido van Rossum | 59d1d2b | 2001-04-20 19:13:02 +0000 | [diff] [blame] | 3783 | com_addbyte(c, GET_ITER); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 3784 | c->c_begin = c->c_nexti; |
Michael W. Hudson | 26848a3 | 2003-04-29 17:07:36 +0000 | [diff] [blame] | 3785 | com_set_lineno(c, c->c_last_line); |
Guido van Rossum | 59d1d2b | 2001-04-20 19:13:02 +0000 | [diff] [blame] | 3786 | com_addfwref(c, FOR_ITER, &anchor); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3787 | com_push(c, 1); |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3788 | com_assign(c, CHILD(n, 1), OP_ASSIGN, NULL); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 3789 | c->c_loops++; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3790 | com_node(c, CHILD(n, 5)); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 3791 | c->c_loops--; |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 3792 | com_addoparg(c, JUMP_ABSOLUTE, c->c_begin); |
| 3793 | c->c_begin = save_begin; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3794 | com_backpatch(c, anchor); |
Guido van Rossum | 59d1d2b | 2001-04-20 19:13:02 +0000 | [diff] [blame] | 3795 | com_pop(c, 1); /* FOR_ITER has popped this */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3796 | com_addbyte(c, POP_BLOCK); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 3797 | block_pop(c, SETUP_LOOP); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3798 | if (NCH(n) > 8) |
| 3799 | com_node(c, CHILD(n, 8)); |
| 3800 | com_backpatch(c, break_anchor); |
| 3801 | } |
| 3802 | |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3803 | /* Code generated for "try: S finally: Sf" is as follows: |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 3804 | |
| 3805 | SETUP_FINALLY L |
| 3806 | <code for S> |
| 3807 | POP_BLOCK |
| 3808 | LOAD_CONST <nil> |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 3809 | L: <code for Sf> |
| 3810 | END_FINALLY |
| 3811 | |
| 3812 | The special instructions use the block stack. Each block |
| 3813 | stack entry contains the instruction that created it (here |
| 3814 | SETUP_FINALLY), the level of the value stack at the time the |
| 3815 | block stack entry was created, and a label (here L). |
| 3816 | |
| 3817 | SETUP_FINALLY: |
| 3818 | Pushes the current value stack level and the label |
| 3819 | onto the block stack. |
| 3820 | POP_BLOCK: |
| 3821 | Pops en entry from the block stack, and pops the value |
| 3822 | stack until its level is the same as indicated on the |
| 3823 | block stack. (The label is ignored.) |
| 3824 | END_FINALLY: |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 3825 | Pops a variable number of entries from the *value* stack |
| 3826 | and re-raises the exception they specify. The number of |
| 3827 | entries popped depends on the (pseudo) exception type. |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 3828 | |
| 3829 | The block stack is unwound when an exception is raised: |
| 3830 | when a SETUP_FINALLY entry is found, the exception is pushed |
| 3831 | onto the value stack (and the exception condition is cleared), |
| 3832 | and the interpreter jumps to the label gotten from the block |
| 3833 | stack. |
| 3834 | |
| 3835 | Code generated for "try: S except E1, V1: S1 except E2, V2: S2 ...": |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 3836 | (The contents of the value stack is shown in [], with the top |
| 3837 | at the right; 'tb' is trace-back info, 'val' the exception's |
| 3838 | associated value, and 'exc' the exception.) |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 3839 | |
| 3840 | Value stack Label Instruction Argument |
| 3841 | [] SETUP_EXCEPT L1 |
| 3842 | [] <code for S> |
| 3843 | [] POP_BLOCK |
| 3844 | [] JUMP_FORWARD L0 |
| 3845 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 3846 | [tb, val, exc] L1: DUP ) |
| 3847 | [tb, val, exc, exc] <evaluate E1> ) |
| 3848 | [tb, val, exc, exc, E1] COMPARE_OP EXC_MATCH ) only if E1 |
| 3849 | [tb, val, exc, 1-or-0] JUMP_IF_FALSE L2 ) |
| 3850 | [tb, val, exc, 1] POP ) |
| 3851 | [tb, val, exc] POP |
| 3852 | [tb, val] <assign to V1> (or POP if no V1) |
| 3853 | [tb] POP |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 3854 | [] <code for S1> |
| 3855 | JUMP_FORWARD L0 |
| 3856 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 3857 | [tb, val, exc, 0] L2: POP |
| 3858 | [tb, val, exc] DUP |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 3859 | .............................etc....................... |
| 3860 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 3861 | [tb, val, exc, 0] Ln+1: POP |
| 3862 | [tb, val, exc] END_FINALLY # re-raise exception |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 3863 | |
| 3864 | [] L0: <next statement> |
| 3865 | |
| 3866 | Of course, parts are not generated if Vi or Ei is not present. |
| 3867 | */ |
| 3868 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3869 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3870 | com_try_except(struct compiling *c, node *n) |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3871 | { |
| 3872 | int except_anchor = 0; |
| 3873 | int end_anchor = 0; |
| 3874 | int else_anchor = 0; |
| 3875 | int i; |
| 3876 | node *ch; |
| 3877 | |
| 3878 | com_addfwref(c, SETUP_EXCEPT, &except_anchor); |
| 3879 | block_push(c, SETUP_EXCEPT); |
| 3880 | com_node(c, CHILD(n, 2)); |
| 3881 | com_addbyte(c, POP_BLOCK); |
| 3882 | block_pop(c, SETUP_EXCEPT); |
| 3883 | com_addfwref(c, JUMP_FORWARD, &else_anchor); |
| 3884 | com_backpatch(c, except_anchor); |
| 3885 | for (i = 3; |
| 3886 | i < NCH(n) && TYPE(ch = CHILD(n, i)) == except_clause; |
| 3887 | i += 3) { |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3888 | /* except_clause: 'except' [expr [',' var]] */ |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3889 | if (except_anchor == 0) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3890 | com_error(c, PyExc_SyntaxError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 3891 | "default 'except:' must be last"); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3892 | break; |
| 3893 | } |
| 3894 | except_anchor = 0; |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3895 | com_push(c, 3); /* tb, val, exc pushed by exception */ |
Michael W. Hudson | dd32a91 | 2002-08-15 14:59:02 +0000 | [diff] [blame] | 3896 | com_set_lineno(c, ch->n_lineno); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3897 | if (NCH(ch) > 1) { |
| 3898 | com_addbyte(c, DUP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3899 | com_push(c, 1); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3900 | com_node(c, CHILD(ch, 1)); |
Martin v. Löwis | 7198a52 | 2002-01-01 19:59:11 +0000 | [diff] [blame] | 3901 | com_addoparg(c, COMPARE_OP, PyCmp_EXC_MATCH); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3902 | com_pop(c, 1); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3903 | com_addfwref(c, JUMP_IF_FALSE, &except_anchor); |
| 3904 | com_addbyte(c, POP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3905 | com_pop(c, 1); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3906 | } |
| 3907 | com_addbyte(c, POP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3908 | com_pop(c, 1); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3909 | if (NCH(ch) > 3) |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3910 | com_assign(c, CHILD(ch, 3), OP_ASSIGN, NULL); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3911 | else { |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3912 | com_addbyte(c, POP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3913 | com_pop(c, 1); |
| 3914 | } |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3915 | com_addbyte(c, POP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3916 | com_pop(c, 1); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3917 | com_node(c, CHILD(n, i+2)); |
| 3918 | com_addfwref(c, JUMP_FORWARD, &end_anchor); |
| 3919 | if (except_anchor) { |
| 3920 | com_backpatch(c, except_anchor); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3921 | /* We come in with [tb, val, exc, 0] on the |
| 3922 | stack; one pop and it's the same as |
| 3923 | expected at the start of the loop */ |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3924 | com_addbyte(c, POP_TOP); |
| 3925 | } |
| 3926 | } |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3927 | /* We actually come in here with [tb, val, exc] but the |
| 3928 | END_FINALLY will zap those and jump around. |
| 3929 | The c_stacklevel does not reflect them so we need not pop |
| 3930 | anything. */ |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3931 | com_addbyte(c, END_FINALLY); |
| 3932 | com_backpatch(c, else_anchor); |
| 3933 | if (i < NCH(n)) |
| 3934 | com_node(c, CHILD(n, i+2)); |
| 3935 | com_backpatch(c, end_anchor); |
| 3936 | } |
| 3937 | |
| 3938 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3939 | com_try_finally(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3940 | { |
| 3941 | int finally_anchor = 0; |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3942 | node *ch; |
Guido van Rossum | 94fb82e | 1992-04-05 14:24:50 +0000 | [diff] [blame] | 3943 | |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3944 | com_addfwref(c, SETUP_FINALLY, &finally_anchor); |
| 3945 | block_push(c, SETUP_FINALLY); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3946 | com_node(c, CHILD(n, 2)); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3947 | com_addbyte(c, POP_BLOCK); |
| 3948 | block_pop(c, SETUP_FINALLY); |
| 3949 | block_push(c, END_FINALLY); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3950 | com_addoparg(c, LOAD_CONST, com_addconst(c, Py_None)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3951 | /* While the generated code pushes only one item, |
| 3952 | the try-finally handling can enter here with |
| 3953 | up to three items. OK, here are the details: |
| 3954 | 3 for an exception, 2 for RETURN, 1 for BREAK. */ |
| 3955 | com_push(c, 3); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3956 | com_backpatch(c, finally_anchor); |
| 3957 | ch = CHILD(n, NCH(n)-1); |
Michael W. Hudson | dd32a91 | 2002-08-15 14:59:02 +0000 | [diff] [blame] | 3958 | com_set_lineno(c, ch->n_lineno); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3959 | com_node(c, ch); |
| 3960 | com_addbyte(c, END_FINALLY); |
| 3961 | block_pop(c, END_FINALLY); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3962 | com_pop(c, 3); /* Matches the com_push above */ |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3963 | } |
| 3964 | |
| 3965 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3966 | com_try_stmt(struct compiling *c, node *n) |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3967 | { |
| 3968 | REQ(n, try_stmt); |
| 3969 | /* 'try' ':' suite (except_clause ':' suite)+ ['else' ':' suite] |
| 3970 | | 'try' ':' suite 'finally' ':' suite */ |
| 3971 | if (TYPE(CHILD(n, 3)) != except_clause) |
| 3972 | com_try_finally(c, n); |
| 3973 | else |
| 3974 | com_try_except(c, n); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3975 | } |
| 3976 | |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3977 | static node * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3978 | get_rawdocstring(node *n) |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3979 | { |
Guido van Rossum | 164d4ff | 1995-01-26 00:40:09 +0000 | [diff] [blame] | 3980 | int i; |
| 3981 | |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3982 | /* Label to avoid tail recursion */ |
| 3983 | next: |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3984 | switch (TYPE(n)) { |
| 3985 | |
| 3986 | case suite: |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3987 | if (NCH(n) == 1) { |
| 3988 | n = CHILD(n, 0); |
| 3989 | goto next; |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3990 | } |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3991 | /* Fall through */ |
Guido van Rossum | 164d4ff | 1995-01-26 00:40:09 +0000 | [diff] [blame] | 3992 | case file_input: |
| 3993 | for (i = 0; i < NCH(n); i++) { |
| 3994 | node *ch = CHILD(n, i); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3995 | if (TYPE(ch) == stmt) { |
| 3996 | n = ch; |
| 3997 | goto next; |
| 3998 | } |
Guido van Rossum | 164d4ff | 1995-01-26 00:40:09 +0000 | [diff] [blame] | 3999 | } |
| 4000 | break; |
| 4001 | |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 4002 | case stmt: |
| 4003 | case simple_stmt: |
| 4004 | case small_stmt: |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4005 | n = CHILD(n, 0); |
| 4006 | goto next; |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 4007 | |
| 4008 | case expr_stmt: |
| 4009 | case testlist: |
Guido van Rossum | 2d3b986 | 2002-05-24 15:47:06 +0000 | [diff] [blame] | 4010 | case testlist1: |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 4011 | case test: |
| 4012 | case and_test: |
| 4013 | case not_test: |
| 4014 | case comparison: |
| 4015 | case expr: |
| 4016 | case xor_expr: |
| 4017 | case and_expr: |
| 4018 | case shift_expr: |
| 4019 | case arith_expr: |
| 4020 | case term: |
| 4021 | case factor: |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 4022 | case power: |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4023 | if (NCH(n) == 1) { |
| 4024 | n = CHILD(n, 0); |
| 4025 | goto next; |
| 4026 | } |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 4027 | break; |
| 4028 | |
| 4029 | case atom: |
| 4030 | if (TYPE(CHILD(n, 0)) == STRING) |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4031 | return n; |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 4032 | break; |
| 4033 | |
| 4034 | } |
| 4035 | return NULL; |
| 4036 | } |
| 4037 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4038 | static PyObject * |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 4039 | get_docstring(struct compiling *c, node *n) |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4040 | { |
Guido van Rossum | 541563e | 1999-01-28 15:08:09 +0000 | [diff] [blame] | 4041 | /* Don't generate doc-strings if run with -OO */ |
| 4042 | if (Py_OptimizeFlag > 1) |
| 4043 | return NULL; |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4044 | n = get_rawdocstring(n); |
| 4045 | if (n == NULL) |
| 4046 | return NULL; |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 4047 | return parsestrplus(c, n); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4048 | } |
| 4049 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4050 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 4051 | com_suite(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4052 | { |
| 4053 | REQ(n, suite); |
| 4054 | /* simple_stmt | NEWLINE INDENT NEWLINE* (stmt NEWLINE*)+ DEDENT */ |
| 4055 | if (NCH(n) == 1) { |
| 4056 | com_node(c, CHILD(n, 0)); |
| 4057 | } |
| 4058 | else { |
| 4059 | int i; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4060 | for (i = 0; i < NCH(n) && c->c_errors == 0; i++) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4061 | node *ch = CHILD(n, i); |
| 4062 | if (TYPE(ch) == stmt) |
| 4063 | com_node(c, ch); |
| 4064 | } |
| 4065 | } |
| 4066 | } |
| 4067 | |
Guido van Rossum | f1aeab7 | 1992-03-27 17:28:26 +0000 | [diff] [blame] | 4068 | /* ARGSUSED */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4069 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 4070 | com_continue_stmt(struct compiling *c, node *n) |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 4071 | { |
| 4072 | int i = c->c_nblocks; |
| 4073 | if (i-- > 0 && c->c_block[i] == SETUP_LOOP) { |
| 4074 | com_addoparg(c, JUMP_ABSOLUTE, c->c_begin); |
| 4075 | } |
Fred Drake | fd1f1be | 2000-09-08 16:31:24 +0000 | [diff] [blame] | 4076 | else if (i <= 0) { |
| 4077 | /* at the outer level */ |
| 4078 | com_error(c, PyExc_SyntaxError, |
| 4079 | "'continue' not properly in loop"); |
| 4080 | } |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 4081 | else { |
Fred Drake | fd1f1be | 2000-09-08 16:31:24 +0000 | [diff] [blame] | 4082 | int j; |
Jeremy Hylton | 3faa52e | 2001-02-01 22:48:12 +0000 | [diff] [blame] | 4083 | for (j = i-1; j >= 0; --j) { |
Fred Drake | fd1f1be | 2000-09-08 16:31:24 +0000 | [diff] [blame] | 4084 | if (c->c_block[j] == SETUP_LOOP) |
| 4085 | break; |
| 4086 | } |
Jeremy Hylton | 3faa52e | 2001-02-01 22:48:12 +0000 | [diff] [blame] | 4087 | if (j >= 0) { |
Fred Drake | fd1f1be | 2000-09-08 16:31:24 +0000 | [diff] [blame] | 4088 | /* there is a loop, but something interferes */ |
Jeremy Hylton | 3faa52e | 2001-02-01 22:48:12 +0000 | [diff] [blame] | 4089 | for (; i > j; --i) { |
| 4090 | if (c->c_block[i] == SETUP_EXCEPT || |
| 4091 | c->c_block[i] == SETUP_FINALLY) { |
| 4092 | com_addoparg(c, CONTINUE_LOOP, |
| 4093 | c->c_begin); |
Fred Drake | fd1f1be | 2000-09-08 16:31:24 +0000 | [diff] [blame] | 4094 | return; |
| 4095 | } |
Jeremy Hylton | 3faa52e | 2001-02-01 22:48:12 +0000 | [diff] [blame] | 4096 | if (c->c_block[i] == END_FINALLY) { |
| 4097 | com_error(c, PyExc_SyntaxError, |
| 4098 | "'continue' not supported inside 'finally' clause"); |
| 4099 | return; |
| 4100 | } |
Fred Drake | fd1f1be | 2000-09-08 16:31:24 +0000 | [diff] [blame] | 4101 | } |
| 4102 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4103 | com_error(c, PyExc_SyntaxError, |
| 4104 | "'continue' not properly in loop"); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 4105 | } |
| 4106 | /* XXX Could allow it inside a 'finally' clause |
| 4107 | XXX if we could pop the exception still on the stack */ |
| 4108 | } |
| 4109 | |
Jeremy Hylton | 376e63d | 2003-08-28 14:42:14 +0000 | [diff] [blame] | 4110 | /* Return the number of default values in the argument list. |
| 4111 | |
| 4112 | If a non-default argument follows a default argument, set an |
| 4113 | exception and return -1. |
| 4114 | */ |
| 4115 | |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 4116 | static int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 4117 | com_argdefs(struct compiling *c, node *n) |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 4118 | { |
Jeremy Hylton | 376e63d | 2003-08-28 14:42:14 +0000 | [diff] [blame] | 4119 | int i, nch, ndefs; |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 4120 | if (TYPE(n) == lambdef) { |
| 4121 | /* lambdef: 'lambda' [varargslist] ':' test */ |
| 4122 | n = CHILD(n, 1); |
| 4123 | } |
| 4124 | else { |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4125 | REQ(n, funcdef); |
| 4126 | /* funcdef: [decorators] 'def' NAME parameters ':' suite */ |
| 4127 | n = RCHILD(n, -3); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 4128 | REQ(n, parameters); /* parameters: '(' [varargslist] ')' */ |
| 4129 | n = CHILD(n, 1); |
| 4130 | } |
| 4131 | if (TYPE(n) != varargslist) |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 4132 | return 0; |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 4133 | /* varargslist: |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 4134 | (fpdef ['=' test] ',')* '*' ....... | |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 4135 | fpdef ['=' test] (',' fpdef ['=' test])* [','] */ |
| 4136 | nch = NCH(n); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 4137 | ndefs = 0; |
| 4138 | for (i = 0; i < nch; i++) { |
| 4139 | int t; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4140 | if (TYPE(CHILD(n, i)) == STAR || |
| 4141 | TYPE(CHILD(n, i)) == DOUBLESTAR) |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 4142 | break; |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 4143 | i++; |
| 4144 | if (i >= nch) |
Guido van Rossum | a1e7e62 | 1995-09-18 21:44:04 +0000 | [diff] [blame] | 4145 | t = RPAR; /* Anything except EQUAL or COMMA */ |
| 4146 | else |
| 4147 | t = TYPE(CHILD(n, i)); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 4148 | if (t == EQUAL) { |
| 4149 | i++; |
| 4150 | ndefs++; |
| 4151 | com_node(c, CHILD(n, i)); |
| 4152 | i++; |
| 4153 | if (i >= nch) |
| 4154 | break; |
| 4155 | t = TYPE(CHILD(n, i)); |
| 4156 | } |
| 4157 | else { |
Guido van Rossum | 29d38cd | 1998-10-02 13:41:54 +0000 | [diff] [blame] | 4158 | /* Treat "(a=1, b)" as an error */ |
Jeremy Hylton | 376e63d | 2003-08-28 14:42:14 +0000 | [diff] [blame] | 4159 | if (ndefs) { |
Guido van Rossum | 29d38cd | 1998-10-02 13:41:54 +0000 | [diff] [blame] | 4160 | com_error(c, PyExc_SyntaxError, |
Guido van Rossum | dfede31 | 1998-10-02 14:06:56 +0000 | [diff] [blame] | 4161 | "non-default argument follows default argument"); |
Jeremy Hylton | 376e63d | 2003-08-28 14:42:14 +0000 | [diff] [blame] | 4162 | return -1; |
| 4163 | } |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 4164 | } |
| 4165 | if (t != COMMA) |
| 4166 | break; |
| 4167 | } |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 4168 | return ndefs; |
| 4169 | } |
| 4170 | |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 4171 | static void |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4172 | com_decorator_name(struct compiling *c, node *n) |
| 4173 | { |
| 4174 | /* dotted_name: NAME ('.' NAME)* */ |
| 4175 | |
| 4176 | int i, nch; |
| 4177 | node *varname; |
| 4178 | |
| 4179 | REQ(n, dotted_name); |
| 4180 | nch = NCH(n); |
| 4181 | assert(nch >= 1 && nch % 2 == 1); |
| 4182 | |
| 4183 | varname = CHILD(n, 0); |
| 4184 | REQ(varname, NAME); |
| 4185 | com_addop_varname(c, VAR_LOAD, STR(varname)); |
Anthony Baxter | 4e7785a | 2004-08-02 11:08:15 +0000 | [diff] [blame] | 4186 | com_push(c, 1); |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4187 | |
| 4188 | for (i = 1; i < nch; i += 2) { |
| 4189 | node *attrname; |
| 4190 | |
| 4191 | REQ(CHILD(n, i), DOT); |
| 4192 | |
| 4193 | attrname = CHILD(n, i + 1); |
| 4194 | REQ(attrname, NAME); |
| 4195 | com_addop_name(c, LOAD_ATTR, STR(attrname)); |
| 4196 | } |
| 4197 | } |
| 4198 | |
| 4199 | static void |
| 4200 | com_decorator(struct compiling *c, node *n) |
| 4201 | { |
Michael W. Hudson | 0ccff07 | 2004-08-17 17:29:16 +0000 | [diff] [blame] | 4202 | /* decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE */ |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4203 | int nch = NCH(n); |
Michael W. Hudson | 0ccff07 | 2004-08-17 17:29:16 +0000 | [diff] [blame] | 4204 | assert(nch >= 3); |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4205 | REQ(CHILD(n, 0), AT); |
Michael W. Hudson | 0ccff07 | 2004-08-17 17:29:16 +0000 | [diff] [blame] | 4206 | REQ(RCHILD(n, -1), NEWLINE); |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4207 | com_decorator_name(c, CHILD(n, 1)); |
| 4208 | |
Michael W. Hudson | 0ccff07 | 2004-08-17 17:29:16 +0000 | [diff] [blame] | 4209 | if (nch > 3) { |
| 4210 | assert(nch == 5 || nch == 6); |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4211 | REQ(CHILD(n, 2), LPAR); |
Michael W. Hudson | 0ccff07 | 2004-08-17 17:29:16 +0000 | [diff] [blame] | 4212 | REQ(RCHILD(n, -2), RPAR); |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4213 | com_call_function(c, CHILD(n, 3)); |
| 4214 | } |
| 4215 | } |
| 4216 | |
| 4217 | static int |
| 4218 | com_decorators(struct compiling *c, node *n) |
| 4219 | { |
Michael W. Hudson | 0ccff07 | 2004-08-17 17:29:16 +0000 | [diff] [blame] | 4220 | int i, nch; |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4221 | |
Michael W. Hudson | 0ccff07 | 2004-08-17 17:29:16 +0000 | [diff] [blame] | 4222 | /* decorator+ */ |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4223 | nch = NCH(n); |
Michael W. Hudson | 0ccff07 | 2004-08-17 17:29:16 +0000 | [diff] [blame] | 4224 | assert(nch >= 1); |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4225 | |
Michael W. Hudson | 0ccff07 | 2004-08-17 17:29:16 +0000 | [diff] [blame] | 4226 | for (i = 0; i < nch; ++i) { |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4227 | node *ch = CHILD(n, i); |
Michael W. Hudson | 0ccff07 | 2004-08-17 17:29:16 +0000 | [diff] [blame] | 4228 | REQ(ch, decorator); |
| 4229 | |
| 4230 | com_decorator(c, ch); |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4231 | } |
| 4232 | |
Michael W. Hudson | 0ccff07 | 2004-08-17 17:29:16 +0000 | [diff] [blame] | 4233 | return nch; |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4234 | } |
| 4235 | |
| 4236 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 4237 | com_funcdef(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4238 | { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4239 | PyObject *co; |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4240 | int ndefs, ndecorators; |
Michael W. Hudson | 0ccff07 | 2004-08-17 17:29:16 +0000 | [diff] [blame] | 4241 | |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4242 | REQ(n, funcdef); |
| 4243 | /* -6 -5 -4 -3 -2 -1 |
| 4244 | funcdef: [decorators] 'def' NAME parameters ':' suite */ |
| 4245 | |
| 4246 | if (NCH(n) == 6) |
| 4247 | ndecorators = com_decorators(c, CHILD(n, 0)); |
| 4248 | else |
| 4249 | ndecorators = 0; |
Michael W. Hudson | 0ccff07 | 2004-08-17 17:29:16 +0000 | [diff] [blame] | 4250 | |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4251 | ndefs = com_argdefs(c, n); |
Jeremy Hylton | 376e63d | 2003-08-28 14:42:14 +0000 | [diff] [blame] | 4252 | if (ndefs < 0) |
| 4253 | return; |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4254 | symtable_enter_scope(c->c_symtable, STR(RCHILD(n, -4)), TYPE(n), |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 4255 | n->n_lineno); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4256 | co = (PyObject *)icompile(n, c); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4257 | symtable_exit_scope(c->c_symtable); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4258 | if (co == NULL) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4259 | c->c_errors++; |
| 4260 | else { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4261 | int closure = com_make_closure(c, (PyCodeObject *)co); |
| 4262 | int i = com_addconst(c, co); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4263 | com_addoparg(c, LOAD_CONST, i); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4264 | com_push(c, 1); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4265 | if (closure) |
| 4266 | com_addoparg(c, MAKE_CLOSURE, ndefs); |
| 4267 | else |
| 4268 | com_addoparg(c, MAKE_FUNCTION, ndefs); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4269 | com_pop(c, ndefs); |
Michael W. Hudson | 0ccff07 | 2004-08-17 17:29:16 +0000 | [diff] [blame] | 4270 | |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4271 | while (ndecorators > 0) { |
| 4272 | com_addoparg(c, CALL_FUNCTION, 1); |
| 4273 | com_pop(c, 1); |
Michael W. Hudson | 0ccff07 | 2004-08-17 17:29:16 +0000 | [diff] [blame] | 4274 | --ndecorators; |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4275 | } |
Michael W. Hudson | 0ccff07 | 2004-08-17 17:29:16 +0000 | [diff] [blame] | 4276 | |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4277 | com_addop_varname(c, VAR_STORE, STR(RCHILD(n, -4))); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4278 | com_pop(c, 1); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4279 | Py_DECREF(co); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4280 | } |
| 4281 | } |
| 4282 | |
| 4283 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 4284 | com_bases(struct compiling *c, node *n) |
Guido van Rossum | c5e9629 | 1991-12-10 13:53:51 +0000 | [diff] [blame] | 4285 | { |
Guido van Rossum | f1aeab7 | 1992-03-27 17:28:26 +0000 | [diff] [blame] | 4286 | int i; |
Guido van Rossum | c5e9629 | 1991-12-10 13:53:51 +0000 | [diff] [blame] | 4287 | REQ(n, testlist); |
| 4288 | /* testlist: test (',' test)* [','] */ |
| 4289 | for (i = 0; i < NCH(n); i += 2) |
| 4290 | com_node(c, CHILD(n, i)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4291 | i = (NCH(n)+1) / 2; |
| 4292 | com_addoparg(c, BUILD_TUPLE, i); |
| 4293 | com_pop(c, i-1); |
Guido van Rossum | c5e9629 | 1991-12-10 13:53:51 +0000 | [diff] [blame] | 4294 | } |
| 4295 | |
| 4296 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 4297 | com_classdef(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4298 | { |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 4299 | int i; |
Jeremy Hylton | 93a569d | 2001-10-17 13:22:22 +0000 | [diff] [blame] | 4300 | PyObject *v; |
| 4301 | PyCodeObject *co; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4302 | char *name; |
| 4303 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4304 | REQ(n, classdef); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 4305 | /* classdef: class NAME ['(' testlist ')'] ':' suite */ |
Guido van Rossum | 7b89b6a | 1997-01-18 08:02:57 +0000 | [diff] [blame] | 4306 | if ((v = PyString_InternFromString(STR(CHILD(n, 1)))) == NULL) { |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 4307 | c->c_errors++; |
| 4308 | return; |
| 4309 | } |
| 4310 | /* Push the class name on the stack */ |
| 4311 | i = com_addconst(c, v); |
| 4312 | com_addoparg(c, LOAD_CONST, i); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4313 | com_push(c, 1); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4314 | Py_DECREF(v); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 4315 | /* Push the tuple of base classes on the stack */ |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4316 | if (TYPE(CHILD(n, 2)) != LPAR) { |
Guido van Rossum | c5e9629 | 1991-12-10 13:53:51 +0000 | [diff] [blame] | 4317 | com_addoparg(c, BUILD_TUPLE, 0); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4318 | com_push(c, 1); |
| 4319 | } |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 4320 | else |
| 4321 | com_bases(c, CHILD(n, 3)); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4322 | name = STR(CHILD(n, 1)); |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 4323 | symtable_enter_scope(c->c_symtable, name, TYPE(n), n->n_lineno); |
Jeremy Hylton | 93a569d | 2001-10-17 13:22:22 +0000 | [diff] [blame] | 4324 | co = icompile(n, c); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4325 | symtable_exit_scope(c->c_symtable); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4326 | if (co == NULL) |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 4327 | c->c_errors++; |
| 4328 | else { |
Jeremy Hylton | 93a569d | 2001-10-17 13:22:22 +0000 | [diff] [blame] | 4329 | int closure = com_make_closure(c, co); |
| 4330 | i = com_addconst(c, (PyObject *)co); |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 4331 | com_addoparg(c, LOAD_CONST, i); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4332 | com_push(c, 1); |
Jeremy Hylton | 93a569d | 2001-10-17 13:22:22 +0000 | [diff] [blame] | 4333 | if (closure) { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4334 | com_addoparg(c, MAKE_CLOSURE, 0); |
Jeremy Hylton | 733c893 | 2001-12-13 19:51:56 +0000 | [diff] [blame] | 4335 | com_pop(c, PyCode_GetNumFree(co)); |
Jeremy Hylton | 93a569d | 2001-10-17 13:22:22 +0000 | [diff] [blame] | 4336 | } else |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4337 | com_addoparg(c, MAKE_FUNCTION, 0); |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 4338 | com_addoparg(c, CALL_FUNCTION, 0); |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 4339 | com_addbyte(c, BUILD_CLASS); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4340 | com_pop(c, 2); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4341 | com_addop_varname(c, VAR_STORE, STR(CHILD(n, 1))); |
Jeremy Hylton | 93a569d | 2001-10-17 13:22:22 +0000 | [diff] [blame] | 4342 | com_pop(c, 1); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4343 | Py_DECREF(co); |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 4344 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4345 | } |
| 4346 | |
| 4347 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 4348 | com_node(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4349 | { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4350 | loop: |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4351 | if (c->c_errors) |
| 4352 | return; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4353 | switch (TYPE(n)) { |
| 4354 | |
| 4355 | /* Definition nodes */ |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4356 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4357 | case funcdef: |
| 4358 | com_funcdef(c, n); |
| 4359 | break; |
| 4360 | case classdef: |
| 4361 | com_classdef(c, n); |
| 4362 | break; |
| 4363 | |
| 4364 | /* Trivial parse tree nodes */ |
| 4365 | |
| 4366 | case stmt: |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 4367 | case small_stmt: |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4368 | case flow_stmt: |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4369 | n = CHILD(n, 0); |
| 4370 | goto loop; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 4371 | |
| 4372 | case simple_stmt: |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 4373 | /* small_stmt (';' small_stmt)* [';'] NEWLINE */ |
Michael W. Hudson | dd32a91 | 2002-08-15 14:59:02 +0000 | [diff] [blame] | 4374 | com_set_lineno(c, n->n_lineno); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 4375 | { |
| 4376 | int i; |
| 4377 | for (i = 0; i < NCH(n)-1; i += 2) |
| 4378 | com_node(c, CHILD(n, i)); |
| 4379 | } |
| 4380 | break; |
| 4381 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4382 | case compound_stmt: |
Michael W. Hudson | dd32a91 | 2002-08-15 14:59:02 +0000 | [diff] [blame] | 4383 | com_set_lineno(c, n->n_lineno); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4384 | n = CHILD(n, 0); |
| 4385 | goto loop; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4386 | |
| 4387 | /* Statement nodes */ |
| 4388 | |
| 4389 | case expr_stmt: |
| 4390 | com_expr_stmt(c, n); |
| 4391 | break; |
| 4392 | case print_stmt: |
| 4393 | com_print_stmt(c, n); |
| 4394 | break; |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 4395 | case del_stmt: /* 'del' exprlist */ |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 4396 | com_assign(c, CHILD(n, 1), OP_DELETE, NULL); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4397 | break; |
| 4398 | case pass_stmt: |
| 4399 | break; |
| 4400 | case break_stmt: |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 4401 | if (c->c_loops == 0) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4402 | com_error(c, PyExc_SyntaxError, |
| 4403 | "'break' outside loop"); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 4404 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4405 | com_addbyte(c, BREAK_LOOP); |
| 4406 | break; |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 4407 | case continue_stmt: |
| 4408 | com_continue_stmt(c, n); |
| 4409 | break; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4410 | case return_stmt: |
| 4411 | com_return_stmt(c, n); |
| 4412 | break; |
Tim Peters | 5ca576e | 2001-06-18 22:08:13 +0000 | [diff] [blame] | 4413 | case yield_stmt: |
| 4414 | com_yield_stmt(c, n); |
| 4415 | break; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4416 | case raise_stmt: |
| 4417 | com_raise_stmt(c, n); |
| 4418 | break; |
| 4419 | case import_stmt: |
| 4420 | com_import_stmt(c, n); |
| 4421 | break; |
Guido van Rossum | c5e9629 | 1991-12-10 13:53:51 +0000 | [diff] [blame] | 4422 | case global_stmt: |
Guido van Rossum | c5e9629 | 1991-12-10 13:53:51 +0000 | [diff] [blame] | 4423 | break; |
Guido van Rossum | db3165e | 1993-10-18 17:06:59 +0000 | [diff] [blame] | 4424 | case exec_stmt: |
| 4425 | com_exec_stmt(c, n); |
| 4426 | break; |
Guido van Rossum | 228d7f3 | 1997-04-02 05:24:36 +0000 | [diff] [blame] | 4427 | case assert_stmt: |
| 4428 | com_assert_stmt(c, n); |
| 4429 | break; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4430 | case if_stmt: |
| 4431 | com_if_stmt(c, n); |
| 4432 | break; |
| 4433 | case while_stmt: |
| 4434 | com_while_stmt(c, n); |
| 4435 | break; |
| 4436 | case for_stmt: |
| 4437 | com_for_stmt(c, n); |
| 4438 | break; |
| 4439 | case try_stmt: |
| 4440 | com_try_stmt(c, n); |
| 4441 | break; |
| 4442 | case suite: |
| 4443 | com_suite(c, n); |
| 4444 | break; |
| 4445 | |
| 4446 | /* Expression nodes */ |
| 4447 | |
| 4448 | case testlist: |
Guido van Rossum | 2d3b986 | 2002-05-24 15:47:06 +0000 | [diff] [blame] | 4449 | case testlist1: |
Guido van Rossum | 1c91707 | 2001-10-15 15:44:05 +0000 | [diff] [blame] | 4450 | case testlist_safe: |
Guido van Rossum | 288a60f | 1991-12-16 13:05:10 +0000 | [diff] [blame] | 4451 | com_list(c, n, 0); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4452 | break; |
| 4453 | case test: |
| 4454 | com_test(c, n); |
| 4455 | break; |
| 4456 | case and_test: |
| 4457 | com_and_test(c, n); |
| 4458 | break; |
| 4459 | case not_test: |
| 4460 | com_not_test(c, n); |
| 4461 | break; |
| 4462 | case comparison: |
| 4463 | com_comparison(c, n); |
| 4464 | break; |
| 4465 | case exprlist: |
Guido van Rossum | 288a60f | 1991-12-16 13:05:10 +0000 | [diff] [blame] | 4466 | com_list(c, n, 0); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4467 | break; |
| 4468 | case expr: |
| 4469 | com_expr(c, n); |
| 4470 | break; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 4471 | case xor_expr: |
| 4472 | com_xor_expr(c, n); |
| 4473 | break; |
| 4474 | case and_expr: |
| 4475 | com_and_expr(c, n); |
| 4476 | break; |
| 4477 | case shift_expr: |
| 4478 | com_shift_expr(c, n); |
| 4479 | break; |
| 4480 | case arith_expr: |
| 4481 | com_arith_expr(c, n); |
| 4482 | break; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4483 | case term: |
| 4484 | com_term(c, n); |
| 4485 | break; |
| 4486 | case factor: |
| 4487 | com_factor(c, n); |
| 4488 | break; |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 4489 | case power: |
| 4490 | com_power(c, n); |
| 4491 | break; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4492 | case atom: |
| 4493 | com_atom(c, n); |
| 4494 | break; |
| 4495 | |
| 4496 | default: |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4497 | com_error(c, PyExc_SystemError, |
| 4498 | "com_node: unexpected node type"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4499 | } |
| 4500 | } |
| 4501 | |
Tim Peters | dbd9ba6 | 2000-07-09 03:09:57 +0000 | [diff] [blame] | 4502 | static void com_fplist(struct compiling *, node *); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4503 | |
| 4504 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 4505 | com_fpdef(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4506 | { |
| 4507 | REQ(n, fpdef); /* fpdef: NAME | '(' fplist ')' */ |
| 4508 | if (TYPE(CHILD(n, 0)) == LPAR) |
| 4509 | com_fplist(c, CHILD(n, 1)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4510 | else { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4511 | com_addop_varname(c, VAR_STORE, STR(CHILD(n, 0))); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4512 | com_pop(c, 1); |
| 4513 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4514 | } |
| 4515 | |
| 4516 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 4517 | com_fplist(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4518 | { |
Guido van Rossum | a9df32a | 1991-12-31 13:13:35 +0000 | [diff] [blame] | 4519 | REQ(n, fplist); /* fplist: fpdef (',' fpdef)* [','] */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4520 | if (NCH(n) == 1) { |
| 4521 | com_fpdef(c, CHILD(n, 0)); |
| 4522 | } |
| 4523 | else { |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4524 | int i = (NCH(n)+1)/2; |
Thomas Wouters | 0be5aab | 2000-08-11 22:15:52 +0000 | [diff] [blame] | 4525 | com_addoparg(c, UNPACK_SEQUENCE, i); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4526 | com_push(c, i-1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4527 | for (i = 0; i < NCH(n); i += 2) |
| 4528 | com_fpdef(c, CHILD(n, i)); |
| 4529 | } |
| 4530 | } |
| 4531 | |
| 4532 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 4533 | com_arglist(struct compiling *c, node *n) |
Guido van Rossum | 49d6dc4 | 1992-01-14 18:30:26 +0000 | [diff] [blame] | 4534 | { |
Guido van Rossum | 633d90c | 2002-12-23 16:51:42 +0000 | [diff] [blame] | 4535 | int nch, i, narg; |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 4536 | int complex = 0; |
Guido van Rossum | 633d90c | 2002-12-23 16:51:42 +0000 | [diff] [blame] | 4537 | char nbuf[30]; |
Guido van Rossum | 49d6dc4 | 1992-01-14 18:30:26 +0000 | [diff] [blame] | 4538 | REQ(n, varargslist); |
Guido van Rossum | acbefef | 1992-01-19 16:33:51 +0000 | [diff] [blame] | 4539 | /* varargslist: |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 4540 | (fpdef ['=' test] ',')* (fpdef ['=' test] | '*' .....) */ |
Guido van Rossum | 633d90c | 2002-12-23 16:51:42 +0000 | [diff] [blame] | 4541 | nch = NCH(n); |
| 4542 | /* Enter all arguments in table of locals */ |
| 4543 | for (i = 0, narg = 0; i < nch; i++) { |
| 4544 | node *ch = CHILD(n, i); |
| 4545 | node *fp; |
| 4546 | if (TYPE(ch) == STAR || TYPE(ch) == DOUBLESTAR) |
Guido van Rossum | 49d6dc4 | 1992-01-14 18:30:26 +0000 | [diff] [blame] | 4547 | break; |
Guido van Rossum | 633d90c | 2002-12-23 16:51:42 +0000 | [diff] [blame] | 4548 | REQ(ch, fpdef); /* fpdef: NAME | '(' fplist ')' */ |
| 4549 | fp = CHILD(ch, 0); |
| 4550 | if (TYPE(fp) != NAME) { |
| 4551 | PyOS_snprintf(nbuf, sizeof(nbuf), ".%d", i); |
| 4552 | complex = 1; |
Guido van Rossum | 9c8a086 | 2002-12-23 16:35:23 +0000 | [diff] [blame] | 4553 | } |
Guido van Rossum | 633d90c | 2002-12-23 16:51:42 +0000 | [diff] [blame] | 4554 | narg++; |
| 4555 | /* all name updates handled by symtable */ |
| 4556 | if (++i >= nch) |
| 4557 | break; |
| 4558 | ch = CHILD(n, i); |
| 4559 | if (TYPE(ch) == EQUAL) |
| 4560 | i += 2; |
| 4561 | else |
| 4562 | REQ(ch, COMMA); |
| 4563 | } |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 4564 | if (complex) { |
| 4565 | /* Generate code for complex arguments only after |
| 4566 | having counted the simple arguments */ |
| 4567 | int ilocal = 0; |
Guido van Rossum | 633d90c | 2002-12-23 16:51:42 +0000 | [diff] [blame] | 4568 | for (i = 0; i < nch; i++) { |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 4569 | node *ch = CHILD(n, i); |
| 4570 | node *fp; |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 4571 | if (TYPE(ch) == STAR || TYPE(ch) == DOUBLESTAR) |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 4572 | break; |
| 4573 | REQ(ch, fpdef); /* fpdef: NAME | '(' fplist ')' */ |
| 4574 | fp = CHILD(ch, 0); |
| 4575 | if (TYPE(fp) != NAME) { |
| 4576 | com_addoparg(c, LOAD_FAST, ilocal); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4577 | com_push(c, 1); |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 4578 | com_fpdef(c, ch); |
| 4579 | } |
| 4580 | ilocal++; |
Guido van Rossum | 633d90c | 2002-12-23 16:51:42 +0000 | [diff] [blame] | 4581 | if (++i >= nch) |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 4582 | break; |
| 4583 | ch = CHILD(n, i); |
| 4584 | if (TYPE(ch) == EQUAL) |
| 4585 | i += 2; |
| 4586 | else |
| 4587 | REQ(ch, COMMA); |
| 4588 | } |
| 4589 | } |
Guido van Rossum | 49d6dc4 | 1992-01-14 18:30:26 +0000 | [diff] [blame] | 4590 | } |
| 4591 | |
| 4592 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 4593 | com_file_input(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4594 | { |
| 4595 | int i; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4596 | PyObject *doc; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4597 | REQ(n, file_input); /* (NEWLINE | stmt)* ENDMARKER */ |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 4598 | doc = get_docstring(c, n); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 4599 | if (doc != NULL) { |
| 4600 | int i = com_addconst(c, doc); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4601 | Py_DECREF(doc); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 4602 | com_addoparg(c, LOAD_CONST, i); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4603 | com_push(c, 1); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4604 | com_addop_name(c, STORE_NAME, "__doc__"); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4605 | com_pop(c, 1); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 4606 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4607 | for (i = 0; i < NCH(n); i++) { |
| 4608 | node *ch = CHILD(n, i); |
| 4609 | if (TYPE(ch) != ENDMARKER && TYPE(ch) != NEWLINE) |
| 4610 | com_node(c, ch); |
| 4611 | } |
| 4612 | } |
| 4613 | |
| 4614 | /* Top-level compile-node interface */ |
| 4615 | |
| 4616 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 4617 | compile_funcdef(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4618 | { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4619 | PyObject *doc; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4620 | node *ch; |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4621 | REQ(n, funcdef); |
| 4622 | /* -6 -5 -4 -3 -2 -1 |
| 4623 | funcdef: [decorators] 'def' NAME parameters ':' suite */ |
| 4624 | c->c_name = STR(RCHILD(n, -4)); |
| 4625 | doc = get_docstring(c, RCHILD(n, -1)); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 4626 | if (doc != NULL) { |
| 4627 | (void) com_addconst(c, doc); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4628 | Py_DECREF(doc); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 4629 | } |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 4630 | else |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4631 | (void) com_addconst(c, Py_None); /* No docstring */ |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4632 | ch = RCHILD(n, -3); /* parameters: '(' [varargslist] ')' */ |
Guido van Rossum | 49d6dc4 | 1992-01-14 18:30:26 +0000 | [diff] [blame] | 4633 | ch = CHILD(ch, 1); /* ')' | varargslist */ |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 4634 | if (TYPE(ch) == varargslist) |
Guido van Rossum | 49d6dc4 | 1992-01-14 18:30:26 +0000 | [diff] [blame] | 4635 | com_arglist(c, ch); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 4636 | c->c_infunction = 1; |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 4637 | com_node(c, RCHILD(n, -1)); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 4638 | c->c_infunction = 0; |
Armin Rigo | 80d937e | 2004-03-22 17:52:53 +0000 | [diff] [blame] | 4639 | com_strip_lnotab(c); |
Michael W. Hudson | 53d58bb | 2002-08-30 13:09:51 +0000 | [diff] [blame] | 4640 | com_addoparg(c, LOAD_CONST, com_addconst(c, Py_None)); |
| 4641 | com_push(c, 1); |
| 4642 | com_addbyte(c, RETURN_VALUE); |
| 4643 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4644 | } |
| 4645 | |
| 4646 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 4647 | compile_lambdef(struct compiling *c, node *n) |
Guido van Rossum | 12d12c5 | 1993-10-26 17:58:25 +0000 | [diff] [blame] | 4648 | { |
Guido van Rossum | 590baa4 | 1993-11-30 13:40:46 +0000 | [diff] [blame] | 4649 | node *ch; |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 4650 | REQ(n, lambdef); /* lambdef: 'lambda' [varargslist] ':' test */ |
Guido van Rossum | 363ac7d | 1994-11-10 22:40:34 +0000 | [diff] [blame] | 4651 | c->c_name = "<lambda>"; |
Guido van Rossum | 590baa4 | 1993-11-30 13:40:46 +0000 | [diff] [blame] | 4652 | |
| 4653 | ch = CHILD(n, 1); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4654 | (void) com_addconst(c, Py_None); /* No docstring */ |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 4655 | if (TYPE(ch) == varargslist) { |
Guido van Rossum | 590baa4 | 1993-11-30 13:40:46 +0000 | [diff] [blame] | 4656 | com_arglist(c, ch); |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 4657 | ch = CHILD(n, 3); |
Guido van Rossum | 590baa4 | 1993-11-30 13:40:46 +0000 | [diff] [blame] | 4658 | } |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 4659 | else |
| 4660 | ch = CHILD(n, 2); |
| 4661 | com_node(c, ch); |
Guido van Rossum | 12d12c5 | 1993-10-26 17:58:25 +0000 | [diff] [blame] | 4662 | com_addbyte(c, RETURN_VALUE); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4663 | com_pop(c, 1); |
Guido van Rossum | 12d12c5 | 1993-10-26 17:58:25 +0000 | [diff] [blame] | 4664 | } |
| 4665 | |
| 4666 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 4667 | compile_classdef(struct compiling *c, node *n) |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 4668 | { |
| 4669 | node *ch; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4670 | PyObject *doc; |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 4671 | REQ(n, classdef); |
| 4672 | /* classdef: 'class' NAME ['(' testlist ')'] ':' suite */ |
| 4673 | c->c_name = STR(CHILD(n, 1)); |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 4674 | c->c_private = c->c_name; |
Guido van Rossum | 340cbe7 | 2002-01-15 21:06:07 +0000 | [diff] [blame] | 4675 | /* Initialize local __module__ from global __name__ */ |
| 4676 | com_addop_name(c, LOAD_GLOBAL, "__name__"); |
| 4677 | com_addop_name(c, STORE_NAME, "__module__"); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 4678 | ch = CHILD(n, NCH(n)-1); /* The suite */ |
Martin v. Löwis | 339d0f7 | 2001-08-17 18:39:25 +0000 | [diff] [blame] | 4679 | doc = get_docstring(c, ch); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 4680 | if (doc != NULL) { |
| 4681 | int i = com_addconst(c, doc); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4682 | Py_DECREF(doc); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 4683 | com_addoparg(c, LOAD_CONST, i); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4684 | com_push(c, 1); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4685 | com_addop_name(c, STORE_NAME, "__doc__"); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4686 | com_pop(c, 1); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 4687 | } |
| 4688 | else |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4689 | (void) com_addconst(c, Py_None); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 4690 | com_node(c, ch); |
Armin Rigo | 80d937e | 2004-03-22 17:52:53 +0000 | [diff] [blame] | 4691 | com_strip_lnotab(c); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 4692 | com_addbyte(c, LOAD_LOCALS); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4693 | com_push(c, 1); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 4694 | com_addbyte(c, RETURN_VALUE); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4695 | com_pop(c, 1); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 4696 | } |
| 4697 | |
| 4698 | static void |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 4699 | compile_generator_expression(struct compiling *c, node *n) |
| 4700 | { |
| 4701 | /* testlist_gexp: test gen_for */ |
| 4702 | /* argument: test gen_for */ |
| 4703 | REQ(CHILD(n, 0), test); |
| 4704 | REQ(CHILD(n, 1), gen_for); |
| 4705 | |
| 4706 | c->c_name = "<generator expression>"; |
| 4707 | com_gen_for(c, CHILD(n, 1), CHILD(n, 0), 1); |
| 4708 | |
| 4709 | com_addoparg(c, LOAD_CONST, com_addconst(c, Py_None)); |
| 4710 | com_push(c, 1); |
| 4711 | com_addbyte(c, RETURN_VALUE); |
| 4712 | com_pop(c, 1); |
| 4713 | } |
| 4714 | |
| 4715 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 4716 | compile_node(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4717 | { |
Michael W. Hudson | dd32a91 | 2002-08-15 14:59:02 +0000 | [diff] [blame] | 4718 | com_set_lineno(c, n->n_lineno); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 4719 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4720 | switch (TYPE(n)) { |
| 4721 | |
Guido van Rossum | 4c41778 | 1991-01-21 16:09:22 +0000 | [diff] [blame] | 4722 | case single_input: /* One interactive command */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4723 | /* NEWLINE | simple_stmt | compound_stmt NEWLINE */ |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 4724 | c->c_interactive++; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4725 | n = CHILD(n, 0); |
| 4726 | if (TYPE(n) != NEWLINE) |
| 4727 | com_node(c, n); |
Armin Rigo | 80d937e | 2004-03-22 17:52:53 +0000 | [diff] [blame] | 4728 | com_strip_lnotab(c); |
Michael W. Hudson | 53d58bb | 2002-08-30 13:09:51 +0000 | [diff] [blame] | 4729 | com_addoparg(c, LOAD_CONST, com_addconst(c, Py_None)); |
| 4730 | com_push(c, 1); |
| 4731 | com_addbyte(c, RETURN_VALUE); |
| 4732 | com_pop(c, 1); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 4733 | c->c_interactive--; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4734 | break; |
| 4735 | |
Guido van Rossum | 4c41778 | 1991-01-21 16:09:22 +0000 | [diff] [blame] | 4736 | case file_input: /* A whole file, or built-in function exec() */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4737 | com_file_input(c, n); |
Armin Rigo | 80d937e | 2004-03-22 17:52:53 +0000 | [diff] [blame] | 4738 | com_strip_lnotab(c); |
Michael W. Hudson | 53d58bb | 2002-08-30 13:09:51 +0000 | [diff] [blame] | 4739 | com_addoparg(c, LOAD_CONST, com_addconst(c, Py_None)); |
| 4740 | com_push(c, 1); |
| 4741 | com_addbyte(c, RETURN_VALUE); |
| 4742 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4743 | break; |
| 4744 | |
Guido van Rossum | 590baa4 | 1993-11-30 13:40:46 +0000 | [diff] [blame] | 4745 | case eval_input: /* Built-in function input() */ |
Guido van Rossum | 4c41778 | 1991-01-21 16:09:22 +0000 | [diff] [blame] | 4746 | com_node(c, CHILD(n, 0)); |
| 4747 | com_addbyte(c, RETURN_VALUE); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 4748 | com_pop(c, 1); |
Guido van Rossum | 4c41778 | 1991-01-21 16:09:22 +0000 | [diff] [blame] | 4749 | break; |
| 4750 | |
Guido van Rossum | 590baa4 | 1993-11-30 13:40:46 +0000 | [diff] [blame] | 4751 | case lambdef: /* anonymous function definition */ |
| 4752 | compile_lambdef(c, n); |
| 4753 | break; |
| 4754 | |
Guido van Rossum | 4c41778 | 1991-01-21 16:09:22 +0000 | [diff] [blame] | 4755 | case funcdef: /* A function definition */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4756 | compile_funcdef(c, n); |
| 4757 | break; |
| 4758 | |
Guido van Rossum | 4c41778 | 1991-01-21 16:09:22 +0000 | [diff] [blame] | 4759 | case classdef: /* A class definition */ |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 4760 | compile_classdef(c, n); |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 4761 | break; |
| 4762 | |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 4763 | case testlist_gexp: /* A generator expression */ |
| 4764 | case argument: /* A generator expression */ |
| 4765 | compile_generator_expression(c, n); |
| 4766 | break; |
| 4767 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4768 | default: |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4769 | com_error(c, PyExc_SystemError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 4770 | "compile_node: unexpected node type"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4771 | } |
| 4772 | } |
| 4773 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4774 | static PyObject * |
| 4775 | dict_keys_inorder(PyObject *dict, int offset) |
| 4776 | { |
| 4777 | PyObject *tuple, *k, *v; |
| 4778 | int i, pos = 0, size = PyDict_Size(dict); |
| 4779 | |
| 4780 | tuple = PyTuple_New(size); |
| 4781 | if (tuple == NULL) |
| 4782 | return NULL; |
| 4783 | while (PyDict_Next(dict, &pos, &k, &v)) { |
| 4784 | i = PyInt_AS_LONG(v); |
| 4785 | Py_INCREF(k); |
Jeremy Hylton | ce7ef59 | 2001-03-20 00:25:43 +0000 | [diff] [blame] | 4786 | assert((i - offset) < size); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4787 | PyTuple_SET_ITEM(tuple, i - offset, k); |
| 4788 | } |
| 4789 | return tuple; |
| 4790 | } |
| 4791 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4792 | PyCodeObject * |
Martin v. Löwis | 95292d6 | 2002-12-11 14:04:59 +0000 | [diff] [blame] | 4793 | PyNode_Compile(node *n, const char *filename) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4794 | { |
Jeremy Hylton | 9f324e9 | 2001-03-01 22:59:14 +0000 | [diff] [blame] | 4795 | return PyNode_CompileFlags(n, filename, NULL); |
| 4796 | } |
| 4797 | |
| 4798 | PyCodeObject * |
Martin v. Löwis | 95292d6 | 2002-12-11 14:04:59 +0000 | [diff] [blame] | 4799 | PyNode_CompileFlags(node *n, const char *filename, PyCompilerFlags *flags) |
Jeremy Hylton | 9f324e9 | 2001-03-01 22:59:14 +0000 | [diff] [blame] | 4800 | { |
| 4801 | return jcompile(n, filename, NULL, flags); |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 4802 | } |
| 4803 | |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 4804 | struct symtable * |
Martin v. Löwis | 95292d6 | 2002-12-11 14:04:59 +0000 | [diff] [blame] | 4805 | PyNode_CompileSymtable(node *n, const char *filename) |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 4806 | { |
| 4807 | struct symtable *st; |
Jeremy Hylton | ded4bd7 | 2001-03-21 19:01:33 +0000 | [diff] [blame] | 4808 | PyFutureFeatures *ff; |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 4809 | |
Jeremy Hylton | ded4bd7 | 2001-03-21 19:01:33 +0000 | [diff] [blame] | 4810 | ff = PyNode_Future(n, filename); |
| 4811 | if (ff == NULL) |
| 4812 | return NULL; |
Jeremy Hylton | 1955fcf | 2003-07-15 20:23:26 +0000 | [diff] [blame] | 4813 | st = symtable_build(n, ff, filename); |
Tim Peters | 8c5e415 | 2001-11-04 19:26:58 +0000 | [diff] [blame] | 4814 | if (st == NULL) { |
Andrew MacIntyre | 80d4e2a | 2002-08-04 06:28:21 +0000 | [diff] [blame] | 4815 | PyObject_FREE((void *)ff); |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 4816 | return NULL; |
Tim Peters | 8c5e415 | 2001-11-04 19:26:58 +0000 | [diff] [blame] | 4817 | } |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 4818 | return st; |
| 4819 | } |
| 4820 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4821 | static PyCodeObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 4822 | icompile(node *n, struct compiling *base) |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 4823 | { |
Jeremy Hylton | 9f324e9 | 2001-03-01 22:59:14 +0000 | [diff] [blame] | 4824 | return jcompile(n, base->c_filename, base, NULL); |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 4825 | } |
| 4826 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4827 | static PyCodeObject * |
Martin v. Löwis | 95292d6 | 2002-12-11 14:04:59 +0000 | [diff] [blame] | 4828 | jcompile(node *n, const char *filename, struct compiling *base, |
Jeremy Hylton | 9f324e9 | 2001-03-01 22:59:14 +0000 | [diff] [blame] | 4829 | PyCompilerFlags *flags) |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 4830 | { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4831 | struct compiling sc; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4832 | PyCodeObject *co; |
Guido van Rossum | 590baa4 | 1993-11-30 13:40:46 +0000 | [diff] [blame] | 4833 | if (!com_init(&sc, filename)) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4834 | return NULL; |
Just van Rossum | 3aaf42c | 2003-02-10 08:21:10 +0000 | [diff] [blame] | 4835 | if (flags && flags->cf_flags & PyCF_SOURCE_IS_UTF8) { |
| 4836 | sc.c_encoding = "utf-8"; |
| 4837 | } else if (TYPE(n) == encoding_decl) { |
Martin v. Löwis | 00f1e3f | 2002-08-04 17:29:52 +0000 | [diff] [blame] | 4838 | sc.c_encoding = STR(n); |
| 4839 | n = CHILD(n, 0); |
| 4840 | } else { |
| 4841 | sc.c_encoding = NULL; |
| 4842 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4843 | if (base) { |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 4844 | sc.c_private = base->c_private; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4845 | sc.c_symtable = base->c_symtable; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4846 | /* c_symtable still points to parent's symbols */ |
| 4847 | if (base->c_nested |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4848 | || (sc.c_symtable->st_cur->ste_type == TYPE_FUNCTION)) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4849 | sc.c_nested = 1; |
Jeremy Hylton | 93a569d | 2001-10-17 13:22:22 +0000 | [diff] [blame] | 4850 | sc.c_flags |= base->c_flags & PyCF_MASK; |
Martin v. Löwis | 00f1e3f | 2002-08-04 17:29:52 +0000 | [diff] [blame] | 4851 | if (base->c_encoding != NULL) { |
| 4852 | assert(sc.c_encoding == NULL); |
| 4853 | sc.c_encoding = base->c_encoding; |
| 4854 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4855 | } else { |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 4856 | sc.c_private = NULL; |
Jeremy Hylton | 4db62b1 | 2001-02-27 19:07:02 +0000 | [diff] [blame] | 4857 | sc.c_future = PyNode_Future(n, filename); |
Jeremy Hylton | 9f324e9 | 2001-03-01 22:59:14 +0000 | [diff] [blame] | 4858 | if (sc.c_future == NULL) { |
| 4859 | com_free(&sc); |
| 4860 | return NULL; |
| 4861 | } |
Jeremy Hylton | 481081e | 2001-08-14 20:01:59 +0000 | [diff] [blame] | 4862 | if (flags) { |
| 4863 | int merged = sc.c_future->ff_features | |
| 4864 | flags->cf_flags; |
| 4865 | sc.c_future->ff_features = merged; |
| 4866 | flags->cf_flags = merged; |
| 4867 | } |
Jeremy Hylton | 1955fcf | 2003-07-15 20:23:26 +0000 | [diff] [blame] | 4868 | sc.c_symtable = symtable_build(n, sc.c_future, sc.c_filename); |
| 4869 | if (sc.c_symtable == NULL) { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4870 | com_free(&sc); |
| 4871 | return NULL; |
| 4872 | } |
Jeremy Hylton | 1955fcf | 2003-07-15 20:23:26 +0000 | [diff] [blame] | 4873 | /* reset symbol table for second pass */ |
| 4874 | sc.c_symtable->st_nscopes = 1; |
| 4875 | sc.c_symtable->st_pass = 2; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4876 | } |
| 4877 | co = NULL; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4878 | if (symtable_load_symbols(&sc) < 0) { |
| 4879 | sc.c_errors++; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4880 | goto exit; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4881 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4882 | compile_node(&sc, n); |
| 4883 | com_done(&sc); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 4884 | if (sc.c_errors == 0) { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4885 | PyObject *consts, *names, *varnames, *filename, *name, |
Raymond Hettinger | 1a78929 | 2004-08-18 05:22:06 +0000 | [diff] [blame] | 4886 | *freevars, *cellvars, *code; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4887 | consts = PyList_AsTuple(sc.c_consts); |
| 4888 | names = PyList_AsTuple(sc.c_names); |
| 4889 | varnames = PyList_AsTuple(sc.c_varnames); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4890 | cellvars = dict_keys_inorder(sc.c_cellvars, 0); |
| 4891 | freevars = dict_keys_inorder(sc.c_freevars, |
| 4892 | PyTuple_GET_SIZE(cellvars)); |
Michael W. Hudson | e51c4f9 | 2004-08-04 10:26:08 +0000 | [diff] [blame] | 4893 | filename = PyString_InternFromString(sc.c_filename); |
Guido van Rossum | 7b89b6a | 1997-01-18 08:02:57 +0000 | [diff] [blame] | 4894 | name = PyString_InternFromString(sc.c_name); |
Raymond Hettinger | fd2d1f7 | 2004-08-23 23:37:48 +0000 | [diff] [blame] | 4895 | code = optimize_code(sc.c_code, consts, names, sc.c_lnotab); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4896 | if (!PyErr_Occurred()) |
| 4897 | co = PyCode_New(sc.c_argcount, |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4898 | sc.c_nlocals, |
| 4899 | sc.c_maxstacklevel, |
| 4900 | sc.c_flags, |
Raymond Hettinger | 1a78929 | 2004-08-18 05:22:06 +0000 | [diff] [blame] | 4901 | code, |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4902 | consts, |
| 4903 | names, |
| 4904 | varnames, |
| 4905 | freevars, |
| 4906 | cellvars, |
| 4907 | filename, |
| 4908 | name, |
| 4909 | sc.c_firstlineno, |
| 4910 | sc.c_lnotab); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4911 | Py_XDECREF(consts); |
| 4912 | Py_XDECREF(names); |
| 4913 | Py_XDECREF(varnames); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4914 | Py_XDECREF(freevars); |
| 4915 | Py_XDECREF(cellvars); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 4916 | Py_XDECREF(filename); |
| 4917 | Py_XDECREF(name); |
Raymond Hettinger | 1a78929 | 2004-08-18 05:22:06 +0000 | [diff] [blame] | 4918 | Py_XDECREF(code); |
Guido van Rossum | a082ce4 | 1991-06-04 19:41:56 +0000 | [diff] [blame] | 4919 | } |
Guido van Rossum | 6c2f0c7 | 2000-08-07 19:22:43 +0000 | [diff] [blame] | 4920 | else if (!PyErr_Occurred()) { |
| 4921 | /* This could happen if someone called PyErr_Clear() after an |
| 4922 | error was reported above. That's not supposed to happen, |
| 4923 | but I just plugged one case and I'm not sure there can't be |
| 4924 | others. In that case, raise SystemError so that at least |
| 4925 | it gets reported instead dumping core. */ |
| 4926 | PyErr_SetString(PyExc_SystemError, "lost syntax error"); |
| 4927 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4928 | exit: |
Jeremy Hylton | 74b3bc4 | 2001-02-23 17:55:27 +0000 | [diff] [blame] | 4929 | if (base == NULL) { |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 4930 | PySymtable_Free(sc.c_symtable); |
Jeremy Hylton | 74b3bc4 | 2001-02-23 17:55:27 +0000 | [diff] [blame] | 4931 | sc.c_symtable = NULL; |
| 4932 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4933 | com_free(&sc); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 4934 | return co; |
| 4935 | } |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 4936 | |
| 4937 | int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 4938 | PyCode_Addr2Line(PyCodeObject *co, int addrq) |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 4939 | { |
| 4940 | int size = PyString_Size(co->co_lnotab) / 2; |
Guido van Rossum | 2174dcb | 1999-09-15 22:48:09 +0000 | [diff] [blame] | 4941 | unsigned char *p = (unsigned char*)PyString_AsString(co->co_lnotab); |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 4942 | int line = co->co_firstlineno; |
| 4943 | int addr = 0; |
| 4944 | while (--size >= 0) { |
| 4945 | addr += *p++; |
| 4946 | if (addr > addrq) |
| 4947 | break; |
| 4948 | line += *p++; |
| 4949 | } |
| 4950 | return line; |
| 4951 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4952 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4953 | /* The test for LOCAL must come before the test for FREE in order to |
| 4954 | handle classes where name is both local and free. The local var is |
| 4955 | a method and the free var is a free var referenced within a method. |
| 4956 | */ |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4957 | |
| 4958 | static int |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4959 | get_ref_type(struct compiling *c, char *name) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4960 | { |
Jeremy Hylton | 1abf610 | 2001-08-11 21:51:24 +0000 | [diff] [blame] | 4961 | char buf[350]; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4962 | PyObject *v; |
Jeremy Hylton | 5125773 | 2001-03-01 00:42:55 +0000 | [diff] [blame] | 4963 | |
Jeremy Hylton | 1abf610 | 2001-08-11 21:51:24 +0000 | [diff] [blame] | 4964 | if (PyDict_GetItemString(c->c_cellvars, name) != NULL) |
| 4965 | return CELL; |
| 4966 | if (PyDict_GetItemString(c->c_locals, name) != NULL) |
| 4967 | return LOCAL; |
| 4968 | if (PyDict_GetItemString(c->c_freevars, name) != NULL) |
| 4969 | return FREE; |
| 4970 | v = PyDict_GetItemString(c->c_globals, name); |
| 4971 | if (v) { |
| 4972 | if (v == Py_None) |
| 4973 | return GLOBAL_EXPLICIT; |
| 4974 | else { |
| 4975 | return GLOBAL_IMPLICIT; |
| 4976 | } |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4977 | } |
Marc-André Lemburg | d4c0a9c | 2001-11-28 11:47:00 +0000 | [diff] [blame] | 4978 | PyOS_snprintf(buf, sizeof(buf), |
Jeremy Hylton | 1abf610 | 2001-08-11 21:51:24 +0000 | [diff] [blame] | 4979 | "unknown scope for %.100s in %.100s(%s) " |
| 4980 | "in %s\nsymbols: %s\nlocals: %s\nglobals: %s\n", |
| 4981 | name, c->c_name, |
| 4982 | PyObject_REPR(c->c_symtable->st_cur->ste_id), |
| 4983 | c->c_filename, |
| 4984 | PyObject_REPR(c->c_symtable->st_cur->ste_symbols), |
| 4985 | PyObject_REPR(c->c_locals), |
| 4986 | PyObject_REPR(c->c_globals) |
| 4987 | ); |
| 4988 | |
| 4989 | Py_FatalError(buf); |
| 4990 | return -1; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4991 | } |
| 4992 | |
Guido van Rossum | 207fda6 | 2001-03-02 03:30:41 +0000 | [diff] [blame] | 4993 | /* Helper functions to issue warnings */ |
| 4994 | |
| 4995 | static int |
Martin v. Löwis | 95292d6 | 2002-12-11 14:04:59 +0000 | [diff] [blame] | 4996 | issue_warning(const char *msg, const char *filename, int lineno) |
Guido van Rossum | 207fda6 | 2001-03-02 03:30:41 +0000 | [diff] [blame] | 4997 | { |
Jeremy Hylton | 1955fcf | 2003-07-15 20:23:26 +0000 | [diff] [blame] | 4998 | if (PyErr_Occurred()) { |
| 4999 | /* This can happen because symtable_node continues |
| 5000 | processing even after raising a SyntaxError. |
| 5001 | Calling PyErr_WarnExplicit now would clobber the |
| 5002 | pending exception; instead we fail and let that |
| 5003 | exception propagate. |
| 5004 | */ |
| 5005 | return -1; |
| 5006 | } |
Guido van Rossum | 207fda6 | 2001-03-02 03:30:41 +0000 | [diff] [blame] | 5007 | if (PyErr_WarnExplicit(PyExc_SyntaxWarning, msg, filename, |
| 5008 | lineno, NULL, NULL) < 0) { |
| 5009 | if (PyErr_ExceptionMatches(PyExc_SyntaxWarning)) { |
| 5010 | PyErr_SetString(PyExc_SyntaxError, msg); |
| 5011 | PyErr_SyntaxLocation(filename, lineno); |
| 5012 | } |
| 5013 | return -1; |
| 5014 | } |
| 5015 | return 0; |
| 5016 | } |
Guido van Rossum | ee34ac1 | 2001-02-28 22:08:12 +0000 | [diff] [blame] | 5017 | |
Jeremy Hylton | 4419ac1 | 2001-02-28 22:54:51 +0000 | [diff] [blame] | 5018 | static int |
Guido van Rossum | ee34ac1 | 2001-02-28 22:08:12 +0000 | [diff] [blame] | 5019 | symtable_warn(struct symtable *st, char *msg) |
| 5020 | { |
Guido van Rossum | 207fda6 | 2001-03-02 03:30:41 +0000 | [diff] [blame] | 5021 | if (issue_warning(msg, st->st_filename, st->st_cur->ste_lineno) < 0) { |
Guido van Rossum | ee34ac1 | 2001-02-28 22:08:12 +0000 | [diff] [blame] | 5022 | st->st_errors++; |
Jeremy Hylton | 4419ac1 | 2001-02-28 22:54:51 +0000 | [diff] [blame] | 5023 | return -1; |
Guido van Rossum | ee34ac1 | 2001-02-28 22:08:12 +0000 | [diff] [blame] | 5024 | } |
Jeremy Hylton | 4419ac1 | 2001-02-28 22:54:51 +0000 | [diff] [blame] | 5025 | return 0; |
Guido van Rossum | ee34ac1 | 2001-02-28 22:08:12 +0000 | [diff] [blame] | 5026 | } |
| 5027 | |
Jeremy Hylton | 9f1b993 | 2001-02-28 07:07:43 +0000 | [diff] [blame] | 5028 | /* Helper function for setting lineno and filename */ |
| 5029 | |
Jeremy Hylton | 1955fcf | 2003-07-15 20:23:26 +0000 | [diff] [blame] | 5030 | static struct symtable * |
| 5031 | symtable_build(node *n, PyFutureFeatures *ff, const char *filename) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5032 | { |
Jeremy Hylton | 1955fcf | 2003-07-15 20:23:26 +0000 | [diff] [blame] | 5033 | struct symtable *st; |
| 5034 | |
| 5035 | st = symtable_init(); |
| 5036 | if (st == NULL) |
| 5037 | return NULL; |
| 5038 | st->st_future = ff; |
| 5039 | st->st_filename = filename; |
| 5040 | symtable_enter_scope(st, TOP, TYPE(n), n->n_lineno); |
| 5041 | if (st->st_errors > 0) |
| 5042 | goto fail; |
| 5043 | symtable_node(st, n); |
| 5044 | if (st->st_errors > 0) |
| 5045 | goto fail; |
| 5046 | return st; |
| 5047 | fail: |
| 5048 | if (!PyErr_Occurred()) { |
| 5049 | /* This could happen because after a syntax error is |
| 5050 | detected, the symbol-table-building continues for |
| 5051 | a while, and PyErr_Clear() might erroneously be |
| 5052 | called during that process. One such case has been |
| 5053 | fixed, but there might be more (now or later). |
| 5054 | */ |
| 5055 | PyErr_SetString(PyExc_SystemError, "lost exception"); |
| 5056 | } |
| 5057 | st->st_future = NULL; |
| 5058 | st->st_filename = NULL; |
| 5059 | PySymtable_Free(st); |
| 5060 | return NULL; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5061 | } |
| 5062 | |
| 5063 | static int |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5064 | symtable_init_compiling_symbols(struct compiling *c) |
| 5065 | { |
| 5066 | PyObject *varnames; |
| 5067 | |
| 5068 | varnames = c->c_symtable->st_cur->ste_varnames; |
| 5069 | if (varnames == NULL) { |
| 5070 | varnames = PyList_New(0); |
| 5071 | if (varnames == NULL) |
| 5072 | return -1; |
| 5073 | c->c_symtable->st_cur->ste_varnames = varnames; |
| 5074 | Py_INCREF(varnames); |
| 5075 | } else |
| 5076 | Py_INCREF(varnames); |
| 5077 | c->c_varnames = varnames; |
| 5078 | |
| 5079 | c->c_globals = PyDict_New(); |
| 5080 | if (c->c_globals == NULL) |
| 5081 | return -1; |
| 5082 | c->c_freevars = PyDict_New(); |
| 5083 | if (c->c_freevars == NULL) |
| 5084 | return -1; |
| 5085 | c->c_cellvars = PyDict_New(); |
| 5086 | if (c->c_cellvars == NULL) |
| 5087 | return -1; |
| 5088 | return 0; |
| 5089 | } |
| 5090 | |
| 5091 | struct symbol_info { |
| 5092 | int si_nlocals; |
| 5093 | int si_ncells; |
| 5094 | int si_nfrees; |
| 5095 | int si_nimplicit; |
| 5096 | }; |
| 5097 | |
| 5098 | static void |
| 5099 | symtable_init_info(struct symbol_info *si) |
| 5100 | { |
| 5101 | si->si_nlocals = 0; |
| 5102 | si->si_ncells = 0; |
| 5103 | si->si_nfrees = 0; |
| 5104 | si->si_nimplicit = 0; |
| 5105 | } |
| 5106 | |
| 5107 | static int |
Jeremy Hylton | ddc4fd0 | 2001-04-27 02:29:40 +0000 | [diff] [blame] | 5108 | symtable_resolve_free(struct compiling *c, PyObject *name, int flags, |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5109 | struct symbol_info *si) |
| 5110 | { |
| 5111 | PyObject *dict, *v; |
| 5112 | |
| 5113 | /* Seperate logic for DEF_FREE. If it occurs in a function, |
| 5114 | it indicates a local that we must allocate storage for (a |
| 5115 | cell var). If it occurs in a class, then the class has a |
| 5116 | method and a free variable with the same name. |
| 5117 | */ |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5118 | if (c->c_symtable->st_cur->ste_type == TYPE_FUNCTION) { |
Jeremy Hylton | ddc4fd0 | 2001-04-27 02:29:40 +0000 | [diff] [blame] | 5119 | /* If it isn't declared locally, it can't be a cell. */ |
| 5120 | if (!(flags & (DEF_LOCAL | DEF_PARAM))) |
| 5121 | return 0; |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5122 | v = PyInt_FromLong(si->si_ncells++); |
| 5123 | dict = c->c_cellvars; |
| 5124 | } else { |
Jeremy Hylton | ddc4fd0 | 2001-04-27 02:29:40 +0000 | [diff] [blame] | 5125 | /* If it is free anyway, then there is no need to do |
| 5126 | anything here. |
| 5127 | */ |
| 5128 | if (is_free(flags ^ DEF_FREE_CLASS) |
Jeremy Hylton | 9c90105 | 2001-05-08 04:12:34 +0000 | [diff] [blame] | 5129 | || (flags == DEF_FREE_CLASS)) |
Jeremy Hylton | ddc4fd0 | 2001-04-27 02:29:40 +0000 | [diff] [blame] | 5130 | return 0; |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5131 | v = PyInt_FromLong(si->si_nfrees++); |
| 5132 | dict = c->c_freevars; |
| 5133 | } |
| 5134 | if (v == NULL) |
| 5135 | return -1; |
| 5136 | if (PyDict_SetItem(dict, name, v) < 0) { |
| 5137 | Py_DECREF(v); |
| 5138 | return -1; |
| 5139 | } |
| 5140 | Py_DECREF(v); |
| 5141 | return 0; |
| 5142 | } |
| 5143 | |
Jeremy Hylton | 220ae7c | 2001-03-21 16:43:47 +0000 | [diff] [blame] | 5144 | /* If a variable is a cell and an argument, make sure that appears in |
| 5145 | co_cellvars before any variable to its right in varnames. |
| 5146 | */ |
| 5147 | |
| 5148 | |
| 5149 | static int |
| 5150 | symtable_cellvar_offsets(PyObject **cellvars, int argcount, |
| 5151 | PyObject *varnames, int flags) |
| 5152 | { |
Tim Peters | b39903b | 2003-03-24 17:22:24 +0000 | [diff] [blame] | 5153 | PyObject *v = NULL; |
| 5154 | PyObject *w, *d, *list = NULL; |
Jeremy Hylton | 220ae7c | 2001-03-21 16:43:47 +0000 | [diff] [blame] | 5155 | int i, pos; |
| 5156 | |
| 5157 | if (flags & CO_VARARGS) |
| 5158 | argcount++; |
| 5159 | if (flags & CO_VARKEYWORDS) |
| 5160 | argcount++; |
| 5161 | for (i = argcount; --i >= 0; ) { |
| 5162 | v = PyList_GET_ITEM(varnames, i); |
| 5163 | if (PyDict_GetItem(*cellvars, v)) { |
| 5164 | if (list == NULL) { |
| 5165 | list = PyList_New(1); |
| 5166 | if (list == NULL) |
| 5167 | return -1; |
| 5168 | PyList_SET_ITEM(list, 0, v); |
| 5169 | Py_INCREF(v); |
Martin v. Löwis | cd12bfc | 2003-05-03 10:53:08 +0000 | [diff] [blame] | 5170 | } else { |
| 5171 | if (PyList_Insert(list, 0, v) < 0) { |
| 5172 | Py_DECREF(list); |
| 5173 | return -1; |
| 5174 | } |
| 5175 | } |
Jeremy Hylton | 220ae7c | 2001-03-21 16:43:47 +0000 | [diff] [blame] | 5176 | } |
| 5177 | } |
Jeremy Hylton | 521482d | 2003-05-22 15:47:02 +0000 | [diff] [blame] | 5178 | if (list == NULL) |
| 5179 | return 0; |
| 5180 | |
Jeremy Hylton | 220ae7c | 2001-03-21 16:43:47 +0000 | [diff] [blame] | 5181 | /* There are cellvars that are also arguments. Create a dict |
| 5182 | to replace cellvars and put the args at the front. |
| 5183 | */ |
| 5184 | d = PyDict_New(); |
Martin v. Löwis | cd12bfc | 2003-05-03 10:53:08 +0000 | [diff] [blame] | 5185 | if (d == NULL) |
| 5186 | return -1; |
Jeremy Hylton | 220ae7c | 2001-03-21 16:43:47 +0000 | [diff] [blame] | 5187 | for (i = PyList_GET_SIZE(list); --i >= 0; ) { |
| 5188 | v = PyInt_FromLong(i); |
| 5189 | if (v == NULL) |
| 5190 | goto fail; |
| 5191 | if (PyDict_SetItem(d, PyList_GET_ITEM(list, i), v) < 0) |
| 5192 | goto fail; |
| 5193 | if (PyDict_DelItem(*cellvars, PyList_GET_ITEM(list, i)) < 0) |
| 5194 | goto fail; |
Tim Peters | b39903b | 2003-03-24 17:22:24 +0000 | [diff] [blame] | 5195 | Py_DECREF(v); |
Jeremy Hylton | 220ae7c | 2001-03-21 16:43:47 +0000 | [diff] [blame] | 5196 | } |
| 5197 | pos = 0; |
| 5198 | i = PyList_GET_SIZE(list); |
| 5199 | Py_DECREF(list); |
| 5200 | while (PyDict_Next(*cellvars, &pos, &v, &w)) { |
| 5201 | w = PyInt_FromLong(i++); /* don't care about the old key */ |
Martin v. Löwis | cd12bfc | 2003-05-03 10:53:08 +0000 | [diff] [blame] | 5202 | if (w == NULL) |
| 5203 | goto fail; |
Jeremy Hylton | 220ae7c | 2001-03-21 16:43:47 +0000 | [diff] [blame] | 5204 | if (PyDict_SetItem(d, v, w) < 0) { |
| 5205 | Py_DECREF(w); |
Tim Peters | b39903b | 2003-03-24 17:22:24 +0000 | [diff] [blame] | 5206 | v = NULL; |
Jeremy Hylton | 220ae7c | 2001-03-21 16:43:47 +0000 | [diff] [blame] | 5207 | goto fail; |
| 5208 | } |
| 5209 | Py_DECREF(w); |
| 5210 | } |
| 5211 | Py_DECREF(*cellvars); |
| 5212 | *cellvars = d; |
| 5213 | return 1; |
| 5214 | fail: |
| 5215 | Py_DECREF(d); |
Tim Peters | b39903b | 2003-03-24 17:22:24 +0000 | [diff] [blame] | 5216 | Py_XDECREF(v); |
Jeremy Hylton | 220ae7c | 2001-03-21 16:43:47 +0000 | [diff] [blame] | 5217 | return -1; |
| 5218 | } |
| 5219 | |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5220 | static int |
| 5221 | symtable_freevar_offsets(PyObject *freevars, int offset) |
| 5222 | { |
| 5223 | PyObject *name, *v; |
| 5224 | int pos; |
| 5225 | |
| 5226 | /* The cell vars are the first elements of the closure, |
| 5227 | followed by the free vars. Update the offsets in |
| 5228 | c_freevars to account for number of cellvars. */ |
| 5229 | pos = 0; |
| 5230 | while (PyDict_Next(freevars, &pos, &name, &v)) { |
| 5231 | int i = PyInt_AS_LONG(v) + offset; |
| 5232 | PyObject *o = PyInt_FromLong(i); |
| 5233 | if (o == NULL) |
| 5234 | return -1; |
| 5235 | if (PyDict_SetItem(freevars, name, o) < 0) { |
| 5236 | Py_DECREF(o); |
| 5237 | return -1; |
| 5238 | } |
| 5239 | Py_DECREF(o); |
| 5240 | } |
| 5241 | return 0; |
| 5242 | } |
| 5243 | |
| 5244 | static int |
Jeremy Hylton | 4419ac1 | 2001-02-28 22:54:51 +0000 | [diff] [blame] | 5245 | symtable_check_unoptimized(struct compiling *c, |
| 5246 | PySymtableEntryObject *ste, |
| 5247 | struct symbol_info *si) |
| 5248 | { |
| 5249 | char buf[300]; |
| 5250 | |
| 5251 | if (!(si->si_ncells || si->si_nfrees || ste->ste_child_free |
| 5252 | || (ste->ste_nested && si->si_nimplicit))) |
| 5253 | return 0; |
| 5254 | |
Jeremy Hylton | 280e6bd | 2001-03-22 03:51:05 +0000 | [diff] [blame] | 5255 | #define ILLEGAL_CONTAINS "contains a nested function with free variables" |
| 5256 | |
| 5257 | #define ILLEGAL_IS "is a nested function" |
| 5258 | |
Jeremy Hylton | 4419ac1 | 2001-02-28 22:54:51 +0000 | [diff] [blame] | 5259 | #define ILLEGAL_IMPORT_STAR \ |
Jeremy Hylton | 280e6bd | 2001-03-22 03:51:05 +0000 | [diff] [blame] | 5260 | "import * is not allowed in function '%.100s' because it %s" |
Jeremy Hylton | 4419ac1 | 2001-02-28 22:54:51 +0000 | [diff] [blame] | 5261 | |
| 5262 | #define ILLEGAL_BARE_EXEC \ |
Jeremy Hylton | 280e6bd | 2001-03-22 03:51:05 +0000 | [diff] [blame] | 5263 | "unqualified exec is not allowed in function '%.100s' it %s" |
Jeremy Hylton | 4419ac1 | 2001-02-28 22:54:51 +0000 | [diff] [blame] | 5264 | |
| 5265 | #define ILLEGAL_EXEC_AND_IMPORT_STAR \ |
Neal Norwitz | 150d09d | 2002-01-29 00:56:37 +0000 | [diff] [blame] | 5266 | "function '%.100s' uses import * and bare exec, which are illegal " \ |
Jeremy Hylton | 280e6bd | 2001-03-22 03:51:05 +0000 | [diff] [blame] | 5267 | "because it %s" |
Jeremy Hylton | 4419ac1 | 2001-02-28 22:54:51 +0000 | [diff] [blame] | 5268 | |
| 5269 | /* XXX perhaps the linenos for these opt-breaking statements |
| 5270 | should be stored so the exception can point to them. */ |
| 5271 | |
Jeremy Hylton | 280e6bd | 2001-03-22 03:51:05 +0000 | [diff] [blame] | 5272 | if (ste->ste_child_free) { |
| 5273 | if (ste->ste_optimized == OPT_IMPORT_STAR) |
Barry Warsaw | 8f6d868 | 2001-11-28 21:10:39 +0000 | [diff] [blame] | 5274 | PyOS_snprintf(buf, sizeof(buf), |
| 5275 | ILLEGAL_IMPORT_STAR, |
| 5276 | PyString_AS_STRING(ste->ste_name), |
| 5277 | ILLEGAL_CONTAINS); |
Jeremy Hylton | 280e6bd | 2001-03-22 03:51:05 +0000 | [diff] [blame] | 5278 | else if (ste->ste_optimized == (OPT_BARE_EXEC | OPT_EXEC)) |
Barry Warsaw | 8f6d868 | 2001-11-28 21:10:39 +0000 | [diff] [blame] | 5279 | PyOS_snprintf(buf, sizeof(buf), |
| 5280 | ILLEGAL_BARE_EXEC, |
| 5281 | PyString_AS_STRING(ste->ste_name), |
| 5282 | ILLEGAL_CONTAINS); |
Jeremy Hylton | 280e6bd | 2001-03-22 03:51:05 +0000 | [diff] [blame] | 5283 | else { |
Barry Warsaw | 8f6d868 | 2001-11-28 21:10:39 +0000 | [diff] [blame] | 5284 | PyOS_snprintf(buf, sizeof(buf), |
| 5285 | ILLEGAL_EXEC_AND_IMPORT_STAR, |
| 5286 | PyString_AS_STRING(ste->ste_name), |
| 5287 | ILLEGAL_CONTAINS); |
Jeremy Hylton | 280e6bd | 2001-03-22 03:51:05 +0000 | [diff] [blame] | 5288 | } |
| 5289 | } else { |
| 5290 | if (ste->ste_optimized == OPT_IMPORT_STAR) |
Barry Warsaw | 8f6d868 | 2001-11-28 21:10:39 +0000 | [diff] [blame] | 5291 | PyOS_snprintf(buf, sizeof(buf), |
| 5292 | ILLEGAL_IMPORT_STAR, |
| 5293 | PyString_AS_STRING(ste->ste_name), |
| 5294 | ILLEGAL_IS); |
Jeremy Hylton | 280e6bd | 2001-03-22 03:51:05 +0000 | [diff] [blame] | 5295 | else if (ste->ste_optimized == (OPT_BARE_EXEC | OPT_EXEC)) |
Barry Warsaw | 8f6d868 | 2001-11-28 21:10:39 +0000 | [diff] [blame] | 5296 | PyOS_snprintf(buf, sizeof(buf), |
| 5297 | ILLEGAL_BARE_EXEC, |
| 5298 | PyString_AS_STRING(ste->ste_name), |
| 5299 | ILLEGAL_IS); |
Jeremy Hylton | 280e6bd | 2001-03-22 03:51:05 +0000 | [diff] [blame] | 5300 | else { |
Barry Warsaw | 8f6d868 | 2001-11-28 21:10:39 +0000 | [diff] [blame] | 5301 | PyOS_snprintf(buf, sizeof(buf), |
| 5302 | ILLEGAL_EXEC_AND_IMPORT_STAR, |
| 5303 | PyString_AS_STRING(ste->ste_name), |
| 5304 | ILLEGAL_IS); |
Jeremy Hylton | 280e6bd | 2001-03-22 03:51:05 +0000 | [diff] [blame] | 5305 | } |
Jeremy Hylton | 4419ac1 | 2001-02-28 22:54:51 +0000 | [diff] [blame] | 5306 | } |
Jeremy Hylton | 280e6bd | 2001-03-22 03:51:05 +0000 | [diff] [blame] | 5307 | |
Jeremy Hylton | 1abf610 | 2001-08-11 21:51:24 +0000 | [diff] [blame] | 5308 | PyErr_SetString(PyExc_SyntaxError, buf); |
| 5309 | PyErr_SyntaxLocation(c->c_symtable->st_filename, |
| 5310 | ste->ste_opt_lineno); |
| 5311 | return -1; |
Jeremy Hylton | 4419ac1 | 2001-02-28 22:54:51 +0000 | [diff] [blame] | 5312 | } |
| 5313 | |
| 5314 | static int |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5315 | symtable_update_flags(struct compiling *c, PySymtableEntryObject *ste, |
| 5316 | struct symbol_info *si) |
| 5317 | { |
Jeremy Hylton | b857ba2 | 2001-08-10 21:41:33 +0000 | [diff] [blame] | 5318 | if (c->c_future) |
| 5319 | c->c_flags |= c->c_future->ff_features; |
Tim Peters | 5ca576e | 2001-06-18 22:08:13 +0000 | [diff] [blame] | 5320 | if (ste->ste_generator) |
| 5321 | c->c_flags |= CO_GENERATOR; |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5322 | if (ste->ste_type != TYPE_MODULE) |
| 5323 | c->c_flags |= CO_NEWLOCALS; |
| 5324 | if (ste->ste_type == TYPE_FUNCTION) { |
| 5325 | c->c_nlocals = si->si_nlocals; |
| 5326 | if (ste->ste_optimized == 0) |
| 5327 | c->c_flags |= CO_OPTIMIZED; |
Jeremy Hylton | 4419ac1 | 2001-02-28 22:54:51 +0000 | [diff] [blame] | 5328 | else if (ste->ste_optimized != OPT_EXEC) |
| 5329 | return symtable_check_unoptimized(c, ste, si); |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5330 | } |
| 5331 | return 0; |
| 5332 | } |
| 5333 | |
| 5334 | static int |
Jeremy Hylton | 9832613 | 2003-09-22 04:26:44 +0000 | [diff] [blame] | 5335 | symtable_error(struct symtable *st, int lineno) |
| 5336 | { |
| 5337 | if (lineno == 0) |
| 5338 | lineno = st->st_cur->ste_lineno; |
| 5339 | PyErr_SyntaxLocation(st->st_filename, lineno); |
| 5340 | st->st_errors++; |
| 5341 | return -1; |
| 5342 | } |
| 5343 | |
| 5344 | static int |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5345 | symtable_load_symbols(struct compiling *c) |
| 5346 | { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5347 | struct symtable *st = c->c_symtable; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5348 | PySymtableEntryObject *ste = st->st_cur; |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5349 | PyObject *name, *varnames, *v; |
| 5350 | int i, flags, pos; |
| 5351 | struct symbol_info si; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5352 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5353 | v = NULL; |
| 5354 | |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5355 | if (symtable_init_compiling_symbols(c) < 0) |
| 5356 | goto fail; |
| 5357 | symtable_init_info(&si); |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5358 | varnames = st->st_cur->ste_varnames; |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5359 | si.si_nlocals = PyList_GET_SIZE(varnames); |
| 5360 | c->c_argcount = si.si_nlocals; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5361 | |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5362 | for (i = 0; i < si.si_nlocals; ++i) { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5363 | v = PyInt_FromLong(i); |
Martin v. Löwis | cd12bfc | 2003-05-03 10:53:08 +0000 | [diff] [blame] | 5364 | if (v == NULL) |
| 5365 | goto fail; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5366 | if (PyDict_SetItem(c->c_locals, |
| 5367 | PyList_GET_ITEM(varnames, i), v) < 0) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5368 | goto fail; |
| 5369 | Py_DECREF(v); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5370 | } |
| 5371 | |
| 5372 | /* XXX The cases below define the rules for whether a name is |
| 5373 | local or global. The logic could probably be clearer. */ |
| 5374 | pos = 0; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5375 | while (PyDict_Next(ste->ste_symbols, &pos, &name, &v)) { |
| 5376 | flags = PyInt_AS_LONG(v); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5377 | |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5378 | if (flags & DEF_FREE_GLOBAL) |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5379 | /* undo the original DEF_FREE */ |
| 5380 | flags &= ~(DEF_FREE | DEF_FREE_CLASS); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5381 | |
Jeremy Hylton | ce7ef59 | 2001-03-20 00:25:43 +0000 | [diff] [blame] | 5382 | /* Deal with names that need two actions: |
Jeremy Hylton | 1abf610 | 2001-08-11 21:51:24 +0000 | [diff] [blame] | 5383 | 1. Cell variables that are also locals. |
Jeremy Hylton | ce7ef59 | 2001-03-20 00:25:43 +0000 | [diff] [blame] | 5384 | 2. Free variables in methods that are also class |
| 5385 | variables or declared global. |
| 5386 | */ |
Jeremy Hylton | 1abf610 | 2001-08-11 21:51:24 +0000 | [diff] [blame] | 5387 | if (flags & (DEF_FREE | DEF_FREE_CLASS)) |
Jeremy Hylton | ddc4fd0 | 2001-04-27 02:29:40 +0000 | [diff] [blame] | 5388 | symtable_resolve_free(c, name, flags, &si); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5389 | |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5390 | if (flags & DEF_STAR) { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5391 | c->c_argcount--; |
| 5392 | c->c_flags |= CO_VARARGS; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5393 | } else if (flags & DEF_DOUBLESTAR) { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5394 | c->c_argcount--; |
| 5395 | c->c_flags |= CO_VARKEYWORDS; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5396 | } else if (flags & DEF_INTUPLE) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5397 | c->c_argcount--; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5398 | else if (flags & DEF_GLOBAL) { |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5399 | if (flags & DEF_PARAM) { |
Martin v. Löwis | dd7eb14 | 2003-10-18 22:05:25 +0000 | [diff] [blame] | 5400 | PyErr_Format(PyExc_SyntaxError, PARAM_GLOBAL, |
Jeremy Hylton | 5acc0c0 | 2001-02-02 20:01:10 +0000 | [diff] [blame] | 5401 | PyString_AS_STRING(name)); |
Jeremy Hylton | 9832613 | 2003-09-22 04:26:44 +0000 | [diff] [blame] | 5402 | symtable_error(st, 0); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5403 | goto fail; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5404 | } |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5405 | if (PyDict_SetItem(c->c_globals, name, Py_None) < 0) |
| 5406 | goto fail; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5407 | } else if (flags & DEF_FREE_GLOBAL) { |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5408 | si.si_nimplicit++; |
Neal Norwitz | 0698222 | 2002-12-18 01:18:44 +0000 | [diff] [blame] | 5409 | if (PyDict_SetItem(c->c_globals, name, Py_True) < 0) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5410 | goto fail; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5411 | } else if ((flags & DEF_LOCAL) && !(flags & DEF_PARAM)) { |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5412 | v = PyInt_FromLong(si.si_nlocals++); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5413 | if (v == NULL) |
| 5414 | goto fail; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5415 | if (PyDict_SetItem(c->c_locals, name, v) < 0) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5416 | goto fail; |
| 5417 | Py_DECREF(v); |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5418 | if (ste->ste_type != TYPE_CLASS) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5419 | if (PyList_Append(c->c_varnames, name) < 0) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5420 | goto fail; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5421 | } else if (is_free(flags)) { |
Jeremy Hylton | 1abf610 | 2001-08-11 21:51:24 +0000 | [diff] [blame] | 5422 | if (ste->ste_nested) { |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5423 | v = PyInt_FromLong(si.si_nfrees++); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5424 | if (v == NULL) |
| 5425 | goto fail; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5426 | if (PyDict_SetItem(c->c_freevars, name, v) < 0) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5427 | goto fail; |
| 5428 | Py_DECREF(v); |
| 5429 | } else { |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5430 | si.si_nimplicit++; |
Jeremy Hylton | 1abf610 | 2001-08-11 21:51:24 +0000 | [diff] [blame] | 5431 | if (PyDict_SetItem(c->c_globals, name, |
Neal Norwitz | 0698222 | 2002-12-18 01:18:44 +0000 | [diff] [blame] | 5432 | Py_True) < 0) |
Jeremy Hylton | 1abf610 | 2001-08-11 21:51:24 +0000 | [diff] [blame] | 5433 | goto fail; |
| 5434 | if (st->st_nscopes != 1) { |
| 5435 | v = PyInt_FromLong(flags); |
Martin v. Löwis | cd12bfc | 2003-05-03 10:53:08 +0000 | [diff] [blame] | 5436 | if (v == NULL) |
| 5437 | goto fail; |
Jeremy Hylton | 1abf610 | 2001-08-11 21:51:24 +0000 | [diff] [blame] | 5438 | if (PyDict_SetItem(st->st_global, |
| 5439 | name, v)) |
| 5440 | goto fail; |
| 5441 | Py_DECREF(v); |
| 5442 | } |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5443 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5444 | } |
| 5445 | } |
Jeremy Hylton | ddc4fd0 | 2001-04-27 02:29:40 +0000 | [diff] [blame] | 5446 | assert(PyDict_Size(c->c_freevars) == si.si_nfrees); |
| 5447 | |
Jeremy Hylton | 220ae7c | 2001-03-21 16:43:47 +0000 | [diff] [blame] | 5448 | if (si.si_ncells > 1) { /* one cell is always in order */ |
| 5449 | if (symtable_cellvar_offsets(&c->c_cellvars, c->c_argcount, |
| 5450 | c->c_varnames, c->c_flags) < 0) |
| 5451 | return -1; |
| 5452 | } |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5453 | if (symtable_freevar_offsets(c->c_freevars, si.si_ncells) < 0) |
| 5454 | return -1; |
| 5455 | return symtable_update_flags(c, ste, &si); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5456 | fail: |
| 5457 | /* is this always the right thing to do? */ |
| 5458 | Py_XDECREF(v); |
| 5459 | return -1; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5460 | } |
| 5461 | |
| 5462 | static struct symtable * |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5463 | symtable_init() |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5464 | { |
| 5465 | struct symtable *st; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5466 | |
Andrew MacIntyre | 80d4e2a | 2002-08-04 06:28:21 +0000 | [diff] [blame] | 5467 | st = (struct symtable *)PyObject_MALLOC(sizeof(struct symtable)); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5468 | if (st == NULL) |
| 5469 | return NULL; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5470 | st->st_pass = 1; |
Tim Peters | ff1f852 | 2001-08-11 01:06:35 +0000 | [diff] [blame] | 5471 | |
Jeremy Hylton | 5acc0c0 | 2001-02-02 20:01:10 +0000 | [diff] [blame] | 5472 | st->st_filename = NULL; |
Martin v. Löwis | cd12bfc | 2003-05-03 10:53:08 +0000 | [diff] [blame] | 5473 | st->st_symbols = NULL; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5474 | if ((st->st_stack = PyList_New(0)) == NULL) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5475 | goto fail; |
| 5476 | if ((st->st_symbols = PyDict_New()) == NULL) |
| 5477 | goto fail; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5478 | st->st_cur = NULL; |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 5479 | st->st_nscopes = 0; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5480 | st->st_errors = 0; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5481 | st->st_private = NULL; |
| 5482 | return st; |
| 5483 | fail: |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 5484 | PySymtable_Free(st); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5485 | return NULL; |
| 5486 | } |
| 5487 | |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 5488 | void |
| 5489 | PySymtable_Free(struct symtable *st) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5490 | { |
| 5491 | Py_XDECREF(st->st_symbols); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5492 | Py_XDECREF(st->st_stack); |
Jeremy Hylton | 74b3bc4 | 2001-02-23 17:55:27 +0000 | [diff] [blame] | 5493 | Py_XDECREF(st->st_cur); |
Andrew MacIntyre | 80d4e2a | 2002-08-04 06:28:21 +0000 | [diff] [blame] | 5494 | PyObject_FREE((void *)st); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5495 | } |
| 5496 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5497 | /* When the compiler exits a scope, it must should update the scope's |
| 5498 | free variable information with the list of free variables in its |
| 5499 | children. |
| 5500 | |
| 5501 | Variables that are free in children and defined in the current |
| 5502 | scope are cellvars. |
| 5503 | |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5504 | If the scope being exited is defined at the top-level (ste_nested is |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5505 | false), free variables in children that are not defined here are |
| 5506 | implicit globals. |
| 5507 | |
| 5508 | */ |
| 5509 | |
| 5510 | static int |
| 5511 | symtable_update_free_vars(struct symtable *st) |
| 5512 | { |
Jeremy Hylton | d7f393e | 2001-02-12 16:01:03 +0000 | [diff] [blame] | 5513 | int i, j, def; |
| 5514 | PyObject *o, *name, *list = NULL; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5515 | PySymtableEntryObject *child, *ste = st->st_cur; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5516 | |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5517 | if (ste->ste_type == TYPE_CLASS) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5518 | def = DEF_FREE_CLASS; |
| 5519 | else |
| 5520 | def = DEF_FREE; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5521 | for (i = 0; i < PyList_GET_SIZE(ste->ste_children); ++i) { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5522 | int pos = 0; |
| 5523 | |
Jeremy Hylton | f9415e6 | 2003-05-22 16:22:33 +0000 | [diff] [blame] | 5524 | if (list && PyList_SetSlice(list, 0, |
| 5525 | PyList_GET_SIZE(list), 0) < 0) |
Martin v. Löwis | cd12bfc | 2003-05-03 10:53:08 +0000 | [diff] [blame] | 5526 | return -1; |
Barry Warsaw | 0372af7 | 2001-02-23 18:22:59 +0000 | [diff] [blame] | 5527 | child = (PySymtableEntryObject *) |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5528 | PyList_GET_ITEM(ste->ste_children, i); |
| 5529 | while (PyDict_Next(child->ste_symbols, &pos, &name, &o)) { |
Jeremy Hylton | 7889107 | 2001-03-01 06:09:34 +0000 | [diff] [blame] | 5530 | int flags = PyInt_AS_LONG(o); |
| 5531 | if (!(is_free(flags))) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5532 | continue; /* avoids indentation */ |
Jeremy Hylton | d7f393e | 2001-02-12 16:01:03 +0000 | [diff] [blame] | 5533 | if (list == NULL) { |
| 5534 | list = PyList_New(0); |
| 5535 | if (list == NULL) |
| 5536 | return -1; |
| 5537 | } |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5538 | ste->ste_child_free = 1; |
Jeremy Hylton | d7f393e | 2001-02-12 16:01:03 +0000 | [diff] [blame] | 5539 | if (PyList_Append(list, name) < 0) { |
| 5540 | Py_DECREF(list); |
| 5541 | return -1; |
| 5542 | } |
| 5543 | } |
| 5544 | for (j = 0; list && j < PyList_GET_SIZE(list); j++) { |
Jeremy Hylton | 7889107 | 2001-03-01 06:09:34 +0000 | [diff] [blame] | 5545 | PyObject *v; |
Jeremy Hylton | d7f393e | 2001-02-12 16:01:03 +0000 | [diff] [blame] | 5546 | name = PyList_GET_ITEM(list, j); |
Jeremy Hylton | 7889107 | 2001-03-01 06:09:34 +0000 | [diff] [blame] | 5547 | v = PyDict_GetItem(ste->ste_symbols, name); |
| 5548 | /* If a name N is declared global in scope A and |
| 5549 | referenced in scope B contained (perhaps |
| 5550 | indirectly) in A and there are no scopes |
| 5551 | with bindings for N between B and A, then N |
Jeremy Hylton | 9c90105 | 2001-05-08 04:12:34 +0000 | [diff] [blame] | 5552 | is global in B. Unless A is a class scope, |
| 5553 | because class scopes are not considered for |
| 5554 | nested scopes. |
Jeremy Hylton | 7889107 | 2001-03-01 06:09:34 +0000 | [diff] [blame] | 5555 | */ |
Jeremy Hylton | ce7ef59 | 2001-03-20 00:25:43 +0000 | [diff] [blame] | 5556 | if (v && (ste->ste_type != TYPE_CLASS)) { |
Jeremy Hylton | 7889107 | 2001-03-01 06:09:34 +0000 | [diff] [blame] | 5557 | int flags = PyInt_AS_LONG(v); |
| 5558 | if (flags & DEF_GLOBAL) { |
| 5559 | symtable_undo_free(st, child->ste_id, |
| 5560 | name); |
| 5561 | continue; |
| 5562 | } |
| 5563 | } |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5564 | if (ste->ste_nested) { |
| 5565 | if (symtable_add_def_o(st, ste->ste_symbols, |
Jeremy Hylton | d7f393e | 2001-02-12 16:01:03 +0000 | [diff] [blame] | 5566 | name, def) < 0) { |
| 5567 | Py_DECREF(list); |
| 5568 | return -1; |
| 5569 | } |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5570 | } else { |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5571 | if (symtable_check_global(st, child->ste_id, |
Jeremy Hylton | d7f393e | 2001-02-12 16:01:03 +0000 | [diff] [blame] | 5572 | name) < 0) { |
| 5573 | Py_DECREF(list); |
| 5574 | return -1; |
| 5575 | } |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5576 | } |
| 5577 | } |
| 5578 | } |
Jeremy Hylton | d7f393e | 2001-02-12 16:01:03 +0000 | [diff] [blame] | 5579 | |
| 5580 | Py_XDECREF(list); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5581 | return 0; |
| 5582 | } |
| 5583 | |
| 5584 | /* If the current scope is a non-nested class or if name is not |
| 5585 | defined in the current, non-nested scope, then it is an implicit |
| 5586 | global in all nested scopes. |
| 5587 | */ |
| 5588 | |
| 5589 | static int |
| 5590 | symtable_check_global(struct symtable *st, PyObject *child, PyObject *name) |
| 5591 | { |
| 5592 | PyObject *o; |
| 5593 | int v; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5594 | PySymtableEntryObject *ste = st->st_cur; |
Jeremy Hylton | 7889107 | 2001-03-01 06:09:34 +0000 | [diff] [blame] | 5595 | |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5596 | if (ste->ste_type == TYPE_CLASS) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5597 | return symtable_undo_free(st, child, name); |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5598 | o = PyDict_GetItem(ste->ste_symbols, name); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5599 | if (o == NULL) |
| 5600 | return symtable_undo_free(st, child, name); |
| 5601 | v = PyInt_AS_LONG(o); |
Jeremy Hylton | 7889107 | 2001-03-01 06:09:34 +0000 | [diff] [blame] | 5602 | |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 5603 | if (is_free(v) || (v & DEF_GLOBAL)) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5604 | return symtable_undo_free(st, child, name); |
| 5605 | else |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5606 | return symtable_add_def_o(st, ste->ste_symbols, |
| 5607 | name, DEF_FREE); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5608 | } |
| 5609 | |
| 5610 | static int |
| 5611 | symtable_undo_free(struct symtable *st, PyObject *id, |
| 5612 | PyObject *name) |
| 5613 | { |
| 5614 | int i, v, x; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5615 | PyObject *info; |
| 5616 | PySymtableEntryObject *ste; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5617 | |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5618 | ste = (PySymtableEntryObject *)PyDict_GetItem(st->st_symbols, id); |
| 5619 | if (ste == NULL) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5620 | return -1; |
Jeremy Hylton | 7889107 | 2001-03-01 06:09:34 +0000 | [diff] [blame] | 5621 | |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5622 | info = PyDict_GetItem(ste->ste_symbols, name); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5623 | if (info == NULL) |
| 5624 | return 0; |
| 5625 | v = PyInt_AS_LONG(info); |
| 5626 | if (is_free(v)) { |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5627 | if (symtable_add_def_o(st, ste->ste_symbols, name, |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5628 | DEF_FREE_GLOBAL) < 0) |
| 5629 | return -1; |
| 5630 | } else |
| 5631 | /* If the name is defined here or declared global, |
| 5632 | then the recursion stops. */ |
| 5633 | return 0; |
| 5634 | |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5635 | for (i = 0; i < PyList_GET_SIZE(ste->ste_children); ++i) { |
| 5636 | PySymtableEntryObject *child; |
Barry Warsaw | 0372af7 | 2001-02-23 18:22:59 +0000 | [diff] [blame] | 5637 | child = (PySymtableEntryObject *) |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5638 | PyList_GET_ITEM(ste->ste_children, i); |
| 5639 | x = symtable_undo_free(st, child->ste_id, name); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5640 | if (x < 0) |
| 5641 | return x; |
| 5642 | } |
| 5643 | return 0; |
| 5644 | } |
| 5645 | |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5646 | /* symtable_enter_scope() gets a reference via PySymtableEntry_New(). |
| 5647 | This reference is released when the scope is exited, via the DECREF |
| 5648 | in symtable_exit_scope(). |
| 5649 | */ |
| 5650 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5651 | static int |
| 5652 | symtable_exit_scope(struct symtable *st) |
| 5653 | { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5654 | int end; |
| 5655 | |
Jeremy Hylton | 4419ac1 | 2001-02-28 22:54:51 +0000 | [diff] [blame] | 5656 | if (st->st_pass == 1) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5657 | symtable_update_free_vars(st); |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5658 | Py_DECREF(st->st_cur); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5659 | end = PyList_GET_SIZE(st->st_stack) - 1; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5660 | st->st_cur = (PySymtableEntryObject *)PyList_GET_ITEM(st->st_stack, |
| 5661 | end); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5662 | if (PySequence_DelItem(st->st_stack, end) < 0) |
| 5663 | return -1; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5664 | return 0; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5665 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5666 | |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 5667 | static void |
| 5668 | symtable_enter_scope(struct symtable *st, char *name, int type, |
| 5669 | int lineno) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5670 | { |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5671 | PySymtableEntryObject *prev = NULL; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5672 | |
| 5673 | if (st->st_cur) { |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5674 | prev = st->st_cur; |
| 5675 | if (PyList_Append(st->st_stack, (PyObject *)st->st_cur) < 0) { |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 5676 | st->st_errors++; |
| 5677 | return; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5678 | } |
| 5679 | } |
Barry Warsaw | 0372af7 | 2001-02-23 18:22:59 +0000 | [diff] [blame] | 5680 | st->st_cur = (PySymtableEntryObject *) |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5681 | PySymtableEntry_New(st, name, type, lineno); |
Martin v. Löwis | cd12bfc | 2003-05-03 10:53:08 +0000 | [diff] [blame] | 5682 | if (st->st_cur == NULL) { |
| 5683 | st->st_errors++; |
| 5684 | return; |
| 5685 | } |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5686 | if (strcmp(name, TOP) == 0) |
| 5687 | st->st_global = st->st_cur->ste_symbols; |
Jeremy Hylton | 74b3bc4 | 2001-02-23 17:55:27 +0000 | [diff] [blame] | 5688 | if (prev && st->st_pass == 1) { |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5689 | if (PyList_Append(prev->ste_children, |
| 5690 | (PyObject *)st->st_cur) < 0) |
| 5691 | st->st_errors++; |
Jeremy Hylton | 74b3bc4 | 2001-02-23 17:55:27 +0000 | [diff] [blame] | 5692 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5693 | } |
| 5694 | |
| 5695 | static int |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5696 | symtable_lookup(struct symtable *st, char *name) |
| 5697 | { |
| 5698 | char buffer[MANGLE_LEN]; |
| 5699 | PyObject *v; |
| 5700 | int flags; |
| 5701 | |
Raymond Hettinger | 0ae0c07 | 2002-06-20 22:23:15 +0000 | [diff] [blame] | 5702 | if (_Py_Mangle(st->st_private, name, buffer, sizeof(buffer))) |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5703 | name = buffer; |
| 5704 | v = PyDict_GetItemString(st->st_cur->ste_symbols, name); |
| 5705 | if (v == NULL) { |
| 5706 | if (PyErr_Occurred()) |
| 5707 | return -1; |
| 5708 | else |
| 5709 | return 0; |
| 5710 | } |
| 5711 | |
| 5712 | flags = PyInt_AS_LONG(v); |
| 5713 | return flags; |
| 5714 | } |
| 5715 | |
| 5716 | static int |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5717 | symtable_add_def(struct symtable *st, char *name, int flag) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5718 | { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5719 | PyObject *s; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5720 | char buffer[MANGLE_LEN]; |
Jeremy Hylton | 39e2f3f | 2001-02-28 01:58:08 +0000 | [diff] [blame] | 5721 | int ret; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5722 | |
Guido van Rossum | b716462 | 2002-08-16 02:48:11 +0000 | [diff] [blame] | 5723 | /* Warn about None, except inside a tuple (where the assignment |
| 5724 | code already issues a warning). */ |
| 5725 | if ((flag & DEF_PARAM) && !(flag & DEF_INTUPLE) && |
| 5726 | *name == 'N' && strcmp(name, "None") == 0) |
| 5727 | { |
Raymond Hettinger | 11a70c7 | 2004-07-17 21:46:25 +0000 | [diff] [blame] | 5728 | PyErr_SetString(PyExc_SyntaxError, |
| 5729 | "Invalid syntax. Assignment to None."); |
| 5730 | symtable_error(st, 0); |
| 5731 | return -1; |
Guido van Rossum | b716462 | 2002-08-16 02:48:11 +0000 | [diff] [blame] | 5732 | } |
Raymond Hettinger | 0ae0c07 | 2002-06-20 22:23:15 +0000 | [diff] [blame] | 5733 | if (_Py_Mangle(st->st_private, name, buffer, sizeof(buffer))) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5734 | name = buffer; |
| 5735 | if ((s = PyString_InternFromString(name)) == NULL) |
| 5736 | return -1; |
Jeremy Hylton | 39e2f3f | 2001-02-28 01:58:08 +0000 | [diff] [blame] | 5737 | ret = symtable_add_def_o(st, st->st_cur->ste_symbols, s, flag); |
| 5738 | Py_DECREF(s); |
| 5739 | return ret; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5740 | } |
| 5741 | |
| 5742 | /* Must only be called with mangled names */ |
| 5743 | |
| 5744 | static int |
| 5745 | symtable_add_def_o(struct symtable *st, PyObject *dict, |
| 5746 | PyObject *name, int flag) |
| 5747 | { |
| 5748 | PyObject *o; |
| 5749 | int val; |
| 5750 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5751 | if ((o = PyDict_GetItem(dict, name))) { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5752 | val = PyInt_AS_LONG(o); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5753 | if ((flag & DEF_PARAM) && (val & DEF_PARAM)) { |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 5754 | PyErr_Format(PyExc_SyntaxError, DUPLICATE_ARGUMENT, |
Jeremy Hylton | 483638c | 2001-02-01 20:20:45 +0000 | [diff] [blame] | 5755 | PyString_AsString(name)); |
Jeremy Hylton | 9832613 | 2003-09-22 04:26:44 +0000 | [diff] [blame] | 5756 | return symtable_error(st, 0); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5757 | } |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5758 | val |= flag; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5759 | } else |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5760 | val = flag; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5761 | o = PyInt_FromLong(val); |
Martin v. Löwis | cd12bfc | 2003-05-03 10:53:08 +0000 | [diff] [blame] | 5762 | if (o == NULL) |
| 5763 | return -1; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5764 | if (PyDict_SetItem(dict, name, o) < 0) { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5765 | Py_DECREF(o); |
| 5766 | return -1; |
| 5767 | } |
| 5768 | Py_DECREF(o); |
| 5769 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5770 | if (flag & DEF_PARAM) { |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 5771 | if (PyList_Append(st->st_cur->ste_varnames, name) < 0) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5772 | return -1; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5773 | } else if (flag & DEF_GLOBAL) { |
| 5774 | /* XXX need to update DEF_GLOBAL for other flags too; |
| 5775 | perhaps only DEF_FREE_GLOBAL */ |
| 5776 | if ((o = PyDict_GetItem(st->st_global, name))) { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5777 | val = PyInt_AS_LONG(o); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5778 | val |= flag; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5779 | } else |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5780 | val = flag; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5781 | o = PyInt_FromLong(val); |
Martin v. Löwis | cd12bfc | 2003-05-03 10:53:08 +0000 | [diff] [blame] | 5782 | if (o == NULL) |
| 5783 | return -1; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5784 | if (PyDict_SetItem(st->st_global, name, o) < 0) { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5785 | Py_DECREF(o); |
| 5786 | return -1; |
| 5787 | } |
| 5788 | Py_DECREF(o); |
| 5789 | } |
| 5790 | return 0; |
| 5791 | } |
| 5792 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5793 | #define symtable_add_use(ST, NAME) symtable_add_def((ST), (NAME), USE) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5794 | |
Tim Peters | 08a898f | 2001-06-28 01:52:22 +0000 | [diff] [blame] | 5795 | /* Look for a yield stmt under n. Return 1 if found, else 0. |
| 5796 | This hack is used to look inside "if 0:" blocks (which are normally |
| 5797 | ignored) in case those are the only places a yield occurs (so that this |
| 5798 | function is a generator). */ |
Tim Peters | b6c3cea | 2001-06-26 03:36:28 +0000 | [diff] [blame] | 5799 | static int |
| 5800 | look_for_yield(node *n) |
| 5801 | { |
| 5802 | int i; |
| 5803 | |
| 5804 | for (i = 0; i < NCH(n); ++i) { |
| 5805 | node *kid = CHILD(n, i); |
| 5806 | |
| 5807 | switch (TYPE(kid)) { |
| 5808 | |
| 5809 | case classdef: |
| 5810 | case funcdef: |
Tim Peters | 08a898f | 2001-06-28 01:52:22 +0000 | [diff] [blame] | 5811 | case lambdef: |
Tim Peters | b6c3cea | 2001-06-26 03:36:28 +0000 | [diff] [blame] | 5812 | /* Stuff in nested functions and classes can't make |
| 5813 | the parent a generator. */ |
| 5814 | return 0; |
| 5815 | |
| 5816 | case yield_stmt: |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 5817 | return GENERATOR; |
Tim Peters | b6c3cea | 2001-06-26 03:36:28 +0000 | [diff] [blame] | 5818 | |
| 5819 | default: |
| 5820 | if (look_for_yield(kid)) |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 5821 | return GENERATOR; |
Tim Peters | b6c3cea | 2001-06-26 03:36:28 +0000 | [diff] [blame] | 5822 | } |
| 5823 | } |
| 5824 | return 0; |
| 5825 | } |
| 5826 | |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5827 | static void |
| 5828 | symtable_node(struct symtable *st, node *n) |
| 5829 | { |
Jeremy Hylton | 961dfe0 | 2001-10-18 16:15:10 +0000 | [diff] [blame] | 5830 | int i; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5831 | |
| 5832 | loop: |
| 5833 | switch (TYPE(n)) { |
| 5834 | case funcdef: { |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 5835 | char *func_name; |
| 5836 | if (NCH(n) == 6) |
| 5837 | symtable_node(st, CHILD(n, 0)); |
| 5838 | func_name = STR(RCHILD(n, -4)); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5839 | symtable_add_def(st, func_name, DEF_LOCAL); |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 5840 | symtable_default_args(st, RCHILD(n, -3)); |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 5841 | symtable_enter_scope(st, func_name, TYPE(n), n->n_lineno); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5842 | symtable_funcdef(st, n); |
| 5843 | symtable_exit_scope(st); |
| 5844 | break; |
| 5845 | } |
| 5846 | case lambdef: |
| 5847 | if (NCH(n) == 4) |
| 5848 | symtable_default_args(st, CHILD(n, 1)); |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 5849 | symtable_enter_scope(st, "lambda", TYPE(n), n->n_lineno); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5850 | symtable_funcdef(st, n); |
| 5851 | symtable_exit_scope(st); |
| 5852 | break; |
| 5853 | case classdef: { |
| 5854 | char *tmp, *class_name = STR(CHILD(n, 1)); |
| 5855 | symtable_add_def(st, class_name, DEF_LOCAL); |
| 5856 | if (TYPE(CHILD(n, 2)) == LPAR) { |
| 5857 | node *bases = CHILD(n, 3); |
| 5858 | int i; |
| 5859 | for (i = 0; i < NCH(bases); i += 2) { |
| 5860 | symtable_node(st, CHILD(bases, i)); |
| 5861 | } |
| 5862 | } |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 5863 | symtable_enter_scope(st, class_name, TYPE(n), n->n_lineno); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5864 | tmp = st->st_private; |
| 5865 | st->st_private = class_name; |
| 5866 | symtable_node(st, CHILD(n, NCH(n) - 1)); |
| 5867 | st->st_private = tmp; |
| 5868 | symtable_exit_scope(st); |
| 5869 | break; |
| 5870 | } |
| 5871 | case if_stmt: |
| 5872 | for (i = 0; i + 3 < NCH(n); i += 4) { |
Tim Peters | b6c3cea | 2001-06-26 03:36:28 +0000 | [diff] [blame] | 5873 | if (is_constant_false(NULL, (CHILD(n, i + 1)))) { |
| 5874 | if (st->st_cur->ste_generator == 0) |
| 5875 | st->st_cur->ste_generator = |
| 5876 | look_for_yield(CHILD(n, i+3)); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5877 | continue; |
Tim Peters | b6c3cea | 2001-06-26 03:36:28 +0000 | [diff] [blame] | 5878 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5879 | symtable_node(st, CHILD(n, i + 1)); |
| 5880 | symtable_node(st, CHILD(n, i + 3)); |
| 5881 | } |
| 5882 | if (i + 2 < NCH(n)) |
| 5883 | symtable_node(st, CHILD(n, i + 2)); |
| 5884 | break; |
| 5885 | case global_stmt: |
| 5886 | symtable_global(st, n); |
| 5887 | break; |
| 5888 | case import_stmt: |
| 5889 | symtable_import(st, n); |
| 5890 | break; |
Jeremy Hylton | 483638c | 2001-02-01 20:20:45 +0000 | [diff] [blame] | 5891 | case exec_stmt: { |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5892 | st->st_cur->ste_optimized |= OPT_EXEC; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5893 | symtable_node(st, CHILD(n, 1)); |
| 5894 | if (NCH(n) > 2) |
| 5895 | symtable_node(st, CHILD(n, 3)); |
Jeremy Hylton | 2e2cded | 2001-03-22 03:57:58 +0000 | [diff] [blame] | 5896 | else { |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5897 | st->st_cur->ste_optimized |= OPT_BARE_EXEC; |
Jeremy Hylton | 2e2cded | 2001-03-22 03:57:58 +0000 | [diff] [blame] | 5898 | st->st_cur->ste_opt_lineno = n->n_lineno; |
| 5899 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5900 | if (NCH(n) > 4) |
| 5901 | symtable_node(st, CHILD(n, 5)); |
| 5902 | break; |
Jeremy Hylton | 483638c | 2001-02-01 20:20:45 +0000 | [diff] [blame] | 5903 | |
| 5904 | } |
Jeremy Hylton | 384639f | 2001-02-19 15:50:51 +0000 | [diff] [blame] | 5905 | case assert_stmt: |
| 5906 | if (Py_OptimizeFlag) |
| 5907 | return; |
| 5908 | if (NCH(n) == 2) { |
| 5909 | n = CHILD(n, 1); |
| 5910 | goto loop; |
| 5911 | } else { |
| 5912 | symtable_node(st, CHILD(n, 1)); |
| 5913 | n = CHILD(n, 3); |
| 5914 | goto loop; |
| 5915 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5916 | case except_clause: |
| 5917 | if (NCH(n) == 4) |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 5918 | symtable_assign(st, CHILD(n, 3), 0); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5919 | if (NCH(n) > 1) { |
| 5920 | n = CHILD(n, 1); |
| 5921 | goto loop; |
| 5922 | } |
| 5923 | break; |
| 5924 | case del_stmt: |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 5925 | symtable_assign(st, CHILD(n, 1), 0); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5926 | break; |
Tim Peters | 5ca576e | 2001-06-18 22:08:13 +0000 | [diff] [blame] | 5927 | case yield_stmt: |
| 5928 | st->st_cur->ste_generator = 1; |
| 5929 | n = CHILD(n, 1); |
| 5930 | goto loop; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5931 | case expr_stmt: |
| 5932 | if (NCH(n) == 1) |
| 5933 | n = CHILD(n, 0); |
| 5934 | else { |
| 5935 | if (TYPE(CHILD(n, 1)) == augassign) { |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 5936 | symtable_assign(st, CHILD(n, 0), 0); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5937 | symtable_node(st, CHILD(n, 2)); |
| 5938 | break; |
| 5939 | } else { |
| 5940 | int i; |
| 5941 | for (i = 0; i < NCH(n) - 2; i += 2) |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 5942 | symtable_assign(st, CHILD(n, i), 0); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5943 | n = CHILD(n, NCH(n) - 1); |
| 5944 | } |
| 5945 | } |
| 5946 | goto loop; |
Jeremy Hylton | 961dfe0 | 2001-10-18 16:15:10 +0000 | [diff] [blame] | 5947 | case list_iter: |
Jeremy Hylton | 4d508ad | 2003-05-21 17:34:50 +0000 | [diff] [blame] | 5948 | /* only occurs when there are multiple for loops |
| 5949 | in a list comprehension */ |
Jeremy Hylton | 961dfe0 | 2001-10-18 16:15:10 +0000 | [diff] [blame] | 5950 | n = CHILD(n, 0); |
Jeremy Hylton | 4d508ad | 2003-05-21 17:34:50 +0000 | [diff] [blame] | 5951 | if (TYPE(n) == list_for) |
| 5952 | symtable_list_for(st, n); |
| 5953 | else { |
Jeremy Hylton | 961dfe0 | 2001-10-18 16:15:10 +0000 | [diff] [blame] | 5954 | REQ(n, list_if); |
| 5955 | symtable_node(st, CHILD(n, 1)); |
| 5956 | if (NCH(n) == 3) { |
| 5957 | n = CHILD(n, 2); |
| 5958 | goto loop; |
| 5959 | } |
| 5960 | } |
| 5961 | break; |
| 5962 | case for_stmt: |
| 5963 | symtable_assign(st, CHILD(n, 1), 0); |
| 5964 | for (i = 3; i < NCH(n); ++i) |
| 5965 | if (TYPE(CHILD(n, i)) >= single_input) |
| 5966 | symtable_node(st, CHILD(n, i)); |
| 5967 | break; |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 5968 | case arglist: |
| 5969 | if (NCH(n) > 1) |
| 5970 | for (i = 0; i < NCH(n); ++i) { |
| 5971 | node *ch = CHILD(n, i); |
| 5972 | if (TYPE(ch) == argument && NCH(ch) == 2 && |
| 5973 | TYPE(CHILD(ch, 1)) == gen_for) { |
| 5974 | PyErr_SetString(PyExc_SyntaxError, |
| 5975 | "invalid syntax"); |
| 5976 | symtable_error(st, n->n_lineno); |
| 5977 | return; |
| 5978 | } |
| 5979 | } |
Jeremy Hylton | 961dfe0 | 2001-10-18 16:15:10 +0000 | [diff] [blame] | 5980 | /* The remaining cases fall through to default except in |
| 5981 | special circumstances. This requires the individual cases |
| 5982 | to be coded with great care, even though they look like |
| 5983 | rather innocuous. Each case must double-check TYPE(n). |
| 5984 | */ |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 5985 | case decorator: |
| 5986 | if (TYPE(n) == decorator) { |
| 5987 | /* decorator: '@' dotted_name [ '(' [arglist] ')' ] */ |
| 5988 | node *name, *varname; |
| 5989 | name = CHILD(n, 1); |
| 5990 | REQ(name, dotted_name); |
| 5991 | varname = CHILD(name, 0); |
| 5992 | REQ(varname, NAME); |
| 5993 | symtable_add_use(st, STR(varname)); |
| 5994 | } |
| 5995 | /* fall through */ |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5996 | case argument: |
Jeremy Hylton | 961dfe0 | 2001-10-18 16:15:10 +0000 | [diff] [blame] | 5997 | if (TYPE(n) == argument && NCH(n) == 3) { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5998 | n = CHILD(n, 2); |
| 5999 | goto loop; |
| 6000 | } |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 6001 | else if (TYPE(n) == argument && NCH(n) == 2 && |
| 6002 | TYPE(CHILD(n, 1)) == gen_for) { |
| 6003 | symtable_generator_expression(st, n); |
| 6004 | break; |
| 6005 | } |
Jeremy Hylton | 961dfe0 | 2001-10-18 16:15:10 +0000 | [diff] [blame] | 6006 | /* fall through */ |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6007 | case listmaker: |
| 6008 | if (NCH(n) > 1 && TYPE(CHILD(n, 1)) == list_for) { |
Jeremy Hylton | 4d508ad | 2003-05-21 17:34:50 +0000 | [diff] [blame] | 6009 | symtable_list_comprehension(st, n); |
Jeremy Hylton | 961dfe0 | 2001-10-18 16:15:10 +0000 | [diff] [blame] | 6010 | break; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6011 | } |
Jeremy Hylton | 961dfe0 | 2001-10-18 16:15:10 +0000 | [diff] [blame] | 6012 | /* fall through */ |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 6013 | case testlist_gexp: |
| 6014 | if (NCH(n) > 1 && TYPE(CHILD(n, 1)) == gen_for) { |
| 6015 | symtable_generator_expression(st, n); |
| 6016 | break; |
| 6017 | } |
| 6018 | /* fall through */ |
| 6019 | |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6020 | case atom: |
| 6021 | if (TYPE(n) == atom && TYPE(CHILD(n, 0)) == NAME) { |
| 6022 | symtable_add_use(st, STR(CHILD(n, 0))); |
| 6023 | break; |
| 6024 | } |
Jeremy Hylton | 961dfe0 | 2001-10-18 16:15:10 +0000 | [diff] [blame] | 6025 | /* fall through */ |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6026 | default: |
Jeremy Hylton | 961dfe0 | 2001-10-18 16:15:10 +0000 | [diff] [blame] | 6027 | /* Walk over every non-token child with a special case |
| 6028 | for one child. |
| 6029 | */ |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6030 | if (NCH(n) == 1) { |
| 6031 | n = CHILD(n, 0); |
| 6032 | goto loop; |
| 6033 | } |
Jeremy Hylton | 961dfe0 | 2001-10-18 16:15:10 +0000 | [diff] [blame] | 6034 | for (i = 0; i < NCH(n); ++i) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6035 | if (TYPE(CHILD(n, i)) >= single_input) |
| 6036 | symtable_node(st, CHILD(n, i)); |
| 6037 | } |
| 6038 | } |
| 6039 | |
| 6040 | static void |
| 6041 | symtable_funcdef(struct symtable *st, node *n) |
| 6042 | { |
| 6043 | node *body; |
| 6044 | |
| 6045 | if (TYPE(n) == lambdef) { |
| 6046 | if (NCH(n) == 4) |
| 6047 | symtable_params(st, CHILD(n, 1)); |
| 6048 | } else |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 6049 | symtable_params(st, RCHILD(n, -3)); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6050 | body = CHILD(n, NCH(n) - 1); |
| 6051 | symtable_node(st, body); |
| 6052 | } |
| 6053 | |
| 6054 | /* The next two functions parse the argument tuple. |
Guido van Rossum | b716462 | 2002-08-16 02:48:11 +0000 | [diff] [blame] | 6055 | symtable_default_args() checks for names in the default arguments, |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6056 | which are references in the defining scope. symtable_params() |
| 6057 | parses the parameter names, which are defined in the function's |
| 6058 | body. |
| 6059 | |
| 6060 | varargslist: |
| 6061 | (fpdef ['=' test] ',')* ('*' NAME [',' '**' NAME] | '**' NAME) |
| 6062 | | fpdef ['=' test] (',' fpdef ['=' test])* [','] |
| 6063 | */ |
| 6064 | |
| 6065 | static void |
| 6066 | symtable_default_args(struct symtable *st, node *n) |
| 6067 | { |
| 6068 | node *c; |
| 6069 | int i; |
| 6070 | |
| 6071 | if (TYPE(n) == parameters) { |
| 6072 | n = CHILD(n, 1); |
| 6073 | if (TYPE(n) == RPAR) |
| 6074 | return; |
| 6075 | } |
| 6076 | REQ(n, varargslist); |
| 6077 | for (i = 0; i < NCH(n); i += 2) { |
| 6078 | c = CHILD(n, i); |
| 6079 | if (TYPE(c) == STAR || TYPE(c) == DOUBLESTAR) { |
| 6080 | break; |
| 6081 | } |
| 6082 | if (i > 0 && (TYPE(CHILD(n, i - 1)) == EQUAL)) |
| 6083 | symtable_node(st, CHILD(n, i)); |
| 6084 | } |
| 6085 | } |
| 6086 | |
| 6087 | static void |
| 6088 | symtable_params(struct symtable *st, node *n) |
| 6089 | { |
Jeremy Hylton | a6ebc48 | 2001-01-25 17:01:49 +0000 | [diff] [blame] | 6090 | int i, complex = -1, ext = 0; |
Guido van Rossum | 633d90c | 2002-12-23 16:51:42 +0000 | [diff] [blame] | 6091 | node *c = NULL; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6092 | |
| 6093 | if (TYPE(n) == parameters) { |
| 6094 | n = CHILD(n, 1); |
| 6095 | if (TYPE(n) == RPAR) |
| 6096 | return; |
| 6097 | } |
| 6098 | REQ(n, varargslist); |
| 6099 | for (i = 0; i < NCH(n); i += 2) { |
| 6100 | c = CHILD(n, i); |
| 6101 | if (TYPE(c) == STAR || TYPE(c) == DOUBLESTAR) { |
| 6102 | ext = 1; |
| 6103 | break; |
| 6104 | } |
| 6105 | if (TYPE(c) == test) { |
| 6106 | continue; |
| 6107 | } |
Guido van Rossum | 633d90c | 2002-12-23 16:51:42 +0000 | [diff] [blame] | 6108 | if (TYPE(CHILD(c, 0)) == NAME) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6109 | symtable_add_def(st, STR(CHILD(c, 0)), DEF_PARAM); |
Guido van Rossum | 633d90c | 2002-12-23 16:51:42 +0000 | [diff] [blame] | 6110 | else { |
Barry Warsaw | 8f6d868 | 2001-11-28 21:10:39 +0000 | [diff] [blame] | 6111 | char nbuf[30]; |
| 6112 | PyOS_snprintf(nbuf, sizeof(nbuf), ".%d", i); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6113 | symtable_add_def(st, nbuf, DEF_PARAM); |
Jeremy Hylton | a6ebc48 | 2001-01-25 17:01:49 +0000 | [diff] [blame] | 6114 | complex = i; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6115 | } |
| 6116 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6117 | if (ext) { |
| 6118 | c = CHILD(n, i); |
| 6119 | if (TYPE(c) == STAR) { |
| 6120 | i++; |
| 6121 | symtable_add_def(st, STR(CHILD(n, i)), |
| 6122 | DEF_PARAM | DEF_STAR); |
| 6123 | i += 2; |
Jeremy Hylton | 1113cfc | 2001-01-23 00:50:52 +0000 | [diff] [blame] | 6124 | if (i >= NCH(n)) |
Jeremy Hylton | a6ebc48 | 2001-01-25 17:01:49 +0000 | [diff] [blame] | 6125 | c = NULL; |
| 6126 | else |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 6127 | c = CHILD(n, i); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6128 | } |
Jeremy Hylton | a6ebc48 | 2001-01-25 17:01:49 +0000 | [diff] [blame] | 6129 | if (c && TYPE(c) == DOUBLESTAR) { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6130 | i++; |
| 6131 | symtable_add_def(st, STR(CHILD(n, i)), |
| 6132 | DEF_PARAM | DEF_DOUBLESTAR); |
| 6133 | } |
| 6134 | } |
Jeremy Hylton | a6ebc48 | 2001-01-25 17:01:49 +0000 | [diff] [blame] | 6135 | if (complex >= 0) { |
| 6136 | int j; |
| 6137 | for (j = 0; j <= complex; j++) { |
| 6138 | c = CHILD(n, j); |
| 6139 | if (TYPE(c) == COMMA) |
Jeremy Hylton | 2b3f0ca | 2001-02-19 23:52:49 +0000 | [diff] [blame] | 6140 | c = CHILD(n, ++j); |
| 6141 | else if (TYPE(c) == EQUAL) |
| 6142 | c = CHILD(n, j += 3); |
Jeremy Hylton | a6ebc48 | 2001-01-25 17:01:49 +0000 | [diff] [blame] | 6143 | if (TYPE(CHILD(c, 0)) == LPAR) |
| 6144 | symtable_params_fplist(st, CHILD(c, 1)); |
| 6145 | } |
| 6146 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6147 | } |
| 6148 | |
| 6149 | static void |
| 6150 | symtable_params_fplist(struct symtable *st, node *n) |
| 6151 | { |
| 6152 | int i; |
| 6153 | node *c; |
| 6154 | |
| 6155 | REQ(n, fplist); |
| 6156 | for (i = 0; i < NCH(n); i += 2) { |
| 6157 | c = CHILD(n, i); |
| 6158 | REQ(c, fpdef); |
| 6159 | if (NCH(c) == 1) |
| 6160 | symtable_add_def(st, STR(CHILD(c, 0)), |
| 6161 | DEF_PARAM | DEF_INTUPLE); |
| 6162 | else |
| 6163 | symtable_params_fplist(st, CHILD(c, 1)); |
| 6164 | } |
| 6165 | |
| 6166 | } |
| 6167 | |
| 6168 | static void |
| 6169 | symtable_global(struct symtable *st, node *n) |
| 6170 | { |
| 6171 | int i; |
| 6172 | |
Jeremy Hylton | 9f324e9 | 2001-03-01 22:59:14 +0000 | [diff] [blame] | 6173 | /* XXX It might be helpful to warn about module-level global |
| 6174 | statements, but it's hard to tell the difference between |
| 6175 | module-level and a string passed to exec. |
| 6176 | */ |
Jeremy Hylton | c176132 | 2001-02-28 23:44:45 +0000 | [diff] [blame] | 6177 | |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 6178 | for (i = 1; i < NCH(n); i += 2) { |
| 6179 | char *name = STR(CHILD(n, i)); |
Jeremy Hylton | be77cf7 | 2001-02-27 05:15:57 +0000 | [diff] [blame] | 6180 | int flags; |
| 6181 | |
| 6182 | flags = symtable_lookup(st, name); |
Jeremy Hylton | 39e2f3f | 2001-02-28 01:58:08 +0000 | [diff] [blame] | 6183 | if (flags < 0) |
| 6184 | continue; |
Jeremy Hylton | be77cf7 | 2001-02-27 05:15:57 +0000 | [diff] [blame] | 6185 | if (flags && flags != DEF_GLOBAL) { |
| 6186 | char buf[500]; |
| 6187 | if (flags & DEF_PARAM) { |
Martin v. Löwis | dd7eb14 | 2003-10-18 22:05:25 +0000 | [diff] [blame] | 6188 | PyErr_Format(PyExc_SyntaxError, PARAM_GLOBAL, |
Jeremy Hylton | 39e2f3f | 2001-02-28 01:58:08 +0000 | [diff] [blame] | 6189 | name); |
Jeremy Hylton | 9832613 | 2003-09-22 04:26:44 +0000 | [diff] [blame] | 6190 | symtable_error(st, 0); |
Jeremy Hylton | be77cf7 | 2001-02-27 05:15:57 +0000 | [diff] [blame] | 6191 | return; |
Guido van Rossum | 0bba7f8 | 2001-02-28 21:55:38 +0000 | [diff] [blame] | 6192 | } |
| 6193 | else { |
| 6194 | if (flags & DEF_LOCAL) |
Barry Warsaw | 8f6d868 | 2001-11-28 21:10:39 +0000 | [diff] [blame] | 6195 | PyOS_snprintf(buf, sizeof(buf), |
| 6196 | GLOBAL_AFTER_ASSIGN, |
| 6197 | name); |
Guido van Rossum | 0bba7f8 | 2001-02-28 21:55:38 +0000 | [diff] [blame] | 6198 | else |
Barry Warsaw | 8f6d868 | 2001-11-28 21:10:39 +0000 | [diff] [blame] | 6199 | PyOS_snprintf(buf, sizeof(buf), |
| 6200 | GLOBAL_AFTER_USE, name); |
Guido van Rossum | ee34ac1 | 2001-02-28 22:08:12 +0000 | [diff] [blame] | 6201 | symtable_warn(st, buf); |
Jeremy Hylton | be77cf7 | 2001-02-27 05:15:57 +0000 | [diff] [blame] | 6202 | } |
| 6203 | } |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 6204 | symtable_add_def(st, name, DEF_GLOBAL); |
| 6205 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6206 | } |
| 6207 | |
| 6208 | static void |
| 6209 | symtable_list_comprehension(struct symtable *st, node *n) |
| 6210 | { |
Jeremy Hylton | 4d508ad | 2003-05-21 17:34:50 +0000 | [diff] [blame] | 6211 | /* listmaker: test list_for */ |
Barry Warsaw | 8f6d868 | 2001-11-28 21:10:39 +0000 | [diff] [blame] | 6212 | char tmpname[30]; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6213 | |
Jeremy Hylton | 4d508ad | 2003-05-21 17:34:50 +0000 | [diff] [blame] | 6214 | REQ(n, listmaker); |
| 6215 | PyOS_snprintf(tmpname, sizeof(tmpname), "_[%d]", |
| 6216 | ++st->st_cur->ste_tmpname); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6217 | symtable_add_def(st, tmpname, DEF_LOCAL); |
Jeremy Hylton | 4d508ad | 2003-05-21 17:34:50 +0000 | [diff] [blame] | 6218 | symtable_list_for(st, CHILD(n, 1)); |
| 6219 | symtable_node(st, CHILD(n, 0)); |
| 6220 | --st->st_cur->ste_tmpname; |
| 6221 | } |
| 6222 | |
| 6223 | static void |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 6224 | symtable_generator_expression(struct symtable *st, node *n) |
| 6225 | { |
| 6226 | /* testlist_gexp: test gen_for */ |
| 6227 | REQ(CHILD(n, 0), test); |
| 6228 | REQ(CHILD(n, 1), gen_for); |
| 6229 | |
| 6230 | symtable_enter_scope(st, "<genexpr>", TYPE(n), n->n_lineno); |
| 6231 | st->st_cur->ste_generator = GENERATOR_EXPRESSION; |
| 6232 | |
| 6233 | symtable_add_def(st, "[outmost-iterable]", DEF_PARAM); |
| 6234 | |
| 6235 | symtable_gen_for(st, CHILD(n, 1), 1); |
| 6236 | symtable_node(st, CHILD(n, 0)); |
| 6237 | symtable_exit_scope(st); |
| 6238 | |
| 6239 | /* for outmost iterable precomputation */ |
| 6240 | symtable_node(st, CHILD(CHILD(n, 1), 3)); |
| 6241 | } |
| 6242 | |
| 6243 | static void |
Jeremy Hylton | 4d508ad | 2003-05-21 17:34:50 +0000 | [diff] [blame] | 6244 | symtable_list_for(struct symtable *st, node *n) |
| 6245 | { |
| 6246 | REQ(n, list_for); |
| 6247 | /* list_for: for v in expr [list_iter] */ |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 6248 | symtable_assign(st, CHILD(n, 1), 0); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6249 | symtable_node(st, CHILD(n, 3)); |
| 6250 | if (NCH(n) == 5) |
| 6251 | symtable_node(st, CHILD(n, 4)); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6252 | } |
| 6253 | |
| 6254 | static void |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 6255 | symtable_gen_for(struct symtable *st, node *n, int is_outmost) |
| 6256 | { |
| 6257 | REQ(n, gen_for); |
| 6258 | |
| 6259 | /* gen_for: for v in test [gen_iter] */ |
| 6260 | symtable_assign(st, CHILD(n, 1), 0); |
| 6261 | if (is_outmost) |
| 6262 | symtable_add_use(st, "[outmost-iterable]"); |
| 6263 | else |
| 6264 | symtable_node(st, CHILD(n, 3)); |
| 6265 | |
| 6266 | if (NCH(n) == 5) |
| 6267 | symtable_gen_iter(st, CHILD(n, 4)); |
| 6268 | } |
| 6269 | |
| 6270 | static void |
| 6271 | symtable_gen_iter(struct symtable *st, node *n) |
| 6272 | { |
| 6273 | REQ(n, gen_iter); |
| 6274 | |
| 6275 | n = CHILD(n, 0); |
| 6276 | if (TYPE(n) == gen_for) |
| 6277 | symtable_gen_for(st, n, 0); |
| 6278 | else { |
| 6279 | REQ(n, gen_if); |
| 6280 | symtable_node(st, CHILD(n, 1)); |
| 6281 | |
| 6282 | if (NCH(n) == 3) |
| 6283 | symtable_gen_iter(st, CHILD(n, 2)); |
| 6284 | } |
| 6285 | } |
| 6286 | |
| 6287 | static void |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6288 | symtable_import(struct symtable *st, node *n) |
| 6289 | { |
| 6290 | int i; |
Jeremy Hylton | 483638c | 2001-02-01 20:20:45 +0000 | [diff] [blame] | 6291 | /* import_stmt: 'import' dotted_as_name (',' dotted_as_name)* |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6292 | | 'from' dotted_name 'import' |
| 6293 | ('*' | import_as_name (',' import_as_name)*) |
Jeremy Hylton | 483638c | 2001-02-01 20:20:45 +0000 | [diff] [blame] | 6294 | import_as_name: NAME [NAME NAME] |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6295 | */ |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6296 | if (STR(CHILD(n, 0))[0] == 'f') { /* from */ |
Jeremy Hylton | 39e2f3f | 2001-02-28 01:58:08 +0000 | [diff] [blame] | 6297 | node *dotname = CHILD(n, 1); |
| 6298 | if (strcmp(STR(CHILD(dotname, 0)), "__future__") == 0) { |
| 6299 | /* check for bogus imports */ |
| 6300 | if (n->n_lineno >= st->st_future->ff_last_lineno) { |
| 6301 | PyErr_SetString(PyExc_SyntaxError, |
| 6302 | LATE_FUTURE); |
Jeremy Hylton | 9832613 | 2003-09-22 04:26:44 +0000 | [diff] [blame] | 6303 | symtable_error(st, n->n_lineno); |
Jeremy Hylton | 39e2f3f | 2001-02-28 01:58:08 +0000 | [diff] [blame] | 6304 | return; |
| 6305 | } |
| 6306 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6307 | if (TYPE(CHILD(n, 3)) == STAR) { |
Jeremy Hylton | 8a6f295 | 2001-08-06 19:45:40 +0000 | [diff] [blame] | 6308 | if (st->st_cur->ste_type != TYPE_MODULE) { |
Jeremy Hylton | 6a53bd8 | 2001-08-06 20:34:25 +0000 | [diff] [blame] | 6309 | if (symtable_warn(st, |
| 6310 | "import * only allowed at module level") < 0) |
| 6311 | return; |
Jeremy Hylton | 8a6f295 | 2001-08-06 19:45:40 +0000 | [diff] [blame] | 6312 | } |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 6313 | st->st_cur->ste_optimized |= OPT_IMPORT_STAR; |
Jeremy Hylton | 2e2cded | 2001-03-22 03:57:58 +0000 | [diff] [blame] | 6314 | st->st_cur->ste_opt_lineno = n->n_lineno; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6315 | } else { |
| 6316 | for (i = 3; i < NCH(n); i += 2) { |
| 6317 | node *c = CHILD(n, i); |
| 6318 | if (NCH(c) > 1) /* import as */ |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 6319 | symtable_assign(st, CHILD(c, 2), |
| 6320 | DEF_IMPORT); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6321 | else |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 6322 | symtable_assign(st, CHILD(c, 0), |
| 6323 | DEF_IMPORT); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6324 | } |
| 6325 | } |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 6326 | } else { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6327 | for (i = 1; i < NCH(n); i += 2) { |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 6328 | symtable_assign(st, CHILD(n, i), DEF_IMPORT); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6329 | } |
| 6330 | } |
| 6331 | } |
| 6332 | |
Jeremy Hylton | 961dfe0 | 2001-10-18 16:15:10 +0000 | [diff] [blame] | 6333 | /* The third argument to symatble_assign() is a flag to be passed to |
| 6334 | symtable_add_def() if it is eventually called. The flag is useful |
| 6335 | to specify the particular type of assignment that should be |
| 6336 | recorded, e.g. an assignment caused by import. |
| 6337 | */ |
| 6338 | |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6339 | static void |
Jeremy Hylton | 961dfe0 | 2001-10-18 16:15:10 +0000 | [diff] [blame] | 6340 | symtable_assign(struct symtable *st, node *n, int def_flag) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6341 | { |
| 6342 | node *tmp; |
| 6343 | int i; |
| 6344 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 6345 | loop: |
| 6346 | switch (TYPE(n)) { |
| 6347 | case lambdef: |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 6348 | /* invalid assignment, e.g. lambda x:x=2. The next |
| 6349 | pass will catch this error. */ |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 6350 | return; |
| 6351 | case power: |
| 6352 | if (NCH(n) > 2) { |
| 6353 | for (i = 2; i < NCH(n); ++i) |
| 6354 | if (TYPE(CHILD(n, i)) != DOUBLESTAR) |
| 6355 | symtable_node(st, CHILD(n, i)); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6356 | } |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 6357 | if (NCH(n) > 1) { |
| 6358 | symtable_node(st, CHILD(n, 0)); |
| 6359 | symtable_node(st, CHILD(n, 1)); |
| 6360 | } else { |
| 6361 | n = CHILD(n, 0); |
| 6362 | goto loop; |
| 6363 | } |
| 6364 | return; |
| 6365 | case listmaker: |
Jeremy Hylton | 23b4227 | 2001-03-19 20:38:06 +0000 | [diff] [blame] | 6366 | if (NCH(n) > 1 && TYPE(CHILD(n, 1)) == list_for) { |
| 6367 | /* XXX This is an error, but the next pass |
| 6368 | will catch it. */ |
| 6369 | return; |
| 6370 | } else { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 6371 | for (i = 0; i < NCH(n); i += 2) |
Jeremy Hylton | 961dfe0 | 2001-10-18 16:15:10 +0000 | [diff] [blame] | 6372 | symtable_assign(st, CHILD(n, i), def_flag); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 6373 | } |
| 6374 | return; |
Raymond Hettinger | 354433a | 2004-05-19 08:20:33 +0000 | [diff] [blame] | 6375 | case testlist_gexp: |
| 6376 | if (NCH(n) > 1 && TYPE(CHILD(n, 1)) == gen_for) { |
| 6377 | /* XXX This is an error, but the next pass |
| 6378 | will catch it. */ |
| 6379 | return; |
| 6380 | } else { |
| 6381 | for (i = 0; i < NCH(n); i += 2) |
| 6382 | symtable_assign(st, CHILD(n, i), def_flag); |
| 6383 | } |
| 6384 | return; |
| 6385 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 6386 | case exprlist: |
| 6387 | case testlist: |
Guido van Rossum | 2d3b986 | 2002-05-24 15:47:06 +0000 | [diff] [blame] | 6388 | case testlist1: |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 6389 | if (NCH(n) == 1) { |
| 6390 | n = CHILD(n, 0); |
| 6391 | goto loop; |
| 6392 | } |
| 6393 | else { |
| 6394 | int i; |
| 6395 | for (i = 0; i < NCH(n); i += 2) |
Jeremy Hylton | 961dfe0 | 2001-10-18 16:15:10 +0000 | [diff] [blame] | 6396 | symtable_assign(st, CHILD(n, i), def_flag); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 6397 | return; |
| 6398 | } |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 6399 | case atom: |
| 6400 | tmp = CHILD(n, 0); |
| 6401 | if (TYPE(tmp) == LPAR || TYPE(tmp) == LSQB) { |
| 6402 | n = CHILD(n, 1); |
| 6403 | goto loop; |
Jeremy Hylton | 897b821 | 2001-03-23 14:08:38 +0000 | [diff] [blame] | 6404 | } else if (TYPE(tmp) == NAME) { |
Jeremy Hylton | 778e265 | 2001-11-09 19:50:08 +0000 | [diff] [blame] | 6405 | if (strcmp(STR(tmp), "__debug__") == 0) { |
| 6406 | PyErr_SetString(PyExc_SyntaxError, |
| 6407 | ASSIGN_DEBUG); |
Jeremy Hylton | 9832613 | 2003-09-22 04:26:44 +0000 | [diff] [blame] | 6408 | symtable_error(st, n->n_lineno); |
| 6409 | return; |
Jeremy Hylton | 778e265 | 2001-11-09 19:50:08 +0000 | [diff] [blame] | 6410 | } |
Jeremy Hylton | 961dfe0 | 2001-10-18 16:15:10 +0000 | [diff] [blame] | 6411 | symtable_add_def(st, STR(tmp), DEF_LOCAL | def_flag); |
Jeremy Hylton | 897b821 | 2001-03-23 14:08:38 +0000 | [diff] [blame] | 6412 | } |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 6413 | return; |
| 6414 | case dotted_as_name: |
| 6415 | if (NCH(n) == 3) |
| 6416 | symtable_add_def(st, STR(CHILD(n, 2)), |
Jeremy Hylton | 961dfe0 | 2001-10-18 16:15:10 +0000 | [diff] [blame] | 6417 | DEF_LOCAL | def_flag); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 6418 | else |
| 6419 | symtable_add_def(st, |
| 6420 | STR(CHILD(CHILD(n, |
| 6421 | 0), 0)), |
Jeremy Hylton | 961dfe0 | 2001-10-18 16:15:10 +0000 | [diff] [blame] | 6422 | DEF_LOCAL | def_flag); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 6423 | return; |
| 6424 | case dotted_name: |
Jeremy Hylton | 961dfe0 | 2001-10-18 16:15:10 +0000 | [diff] [blame] | 6425 | symtable_add_def(st, STR(CHILD(n, 0)), DEF_LOCAL | def_flag); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 6426 | return; |
| 6427 | case NAME: |
Jeremy Hylton | 961dfe0 | 2001-10-18 16:15:10 +0000 | [diff] [blame] | 6428 | symtable_add_def(st, STR(n), DEF_LOCAL | def_flag); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 6429 | return; |
| 6430 | default: |
| 6431 | if (NCH(n) == 0) |
| 6432 | return; |
Jeremy Hylton | 17820c4 | 2001-02-19 15:33:10 +0000 | [diff] [blame] | 6433 | if (NCH(n) == 1) { |
| 6434 | n = CHILD(n, 0); |
| 6435 | goto loop; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 6436 | } |
Jeremy Hylton | 17820c4 | 2001-02-19 15:33:10 +0000 | [diff] [blame] | 6437 | /* Should only occur for errors like x + 1 = 1, |
| 6438 | which will be caught in the next pass. */ |
| 6439 | for (i = 0; i < NCH(n); ++i) |
| 6440 | if (TYPE(CHILD(n, i)) >= single_input) |
Jeremy Hylton | 961dfe0 | 2001-10-18 16:15:10 +0000 | [diff] [blame] | 6441 | symtable_assign(st, CHILD(n, i), def_flag); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 6442 | } |
| 6443 | } |