Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2 | /* Compile an expression node to intermediate code */ |
| 3 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 4 | /* XXX TO DO: |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 5 | XXX add __doc__ attribute == co_doc to code object attributes? |
| 6 | 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] | 7 | XXX Generate simple jump for break/return outside 'try...finally' |
Jeremy Hylton | 3faa52e | 2001-02-01 22:48:12 +0000 | [diff] [blame] | 8 | XXX Allow 'continue' inside finally clause of try-finally |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 9 | 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] | 10 | XXX other JAR tricks? |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 11 | */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 12 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 13 | #include "Python.h" |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 14 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 15 | #include "node.h" |
| 16 | #include "token.h" |
| 17 | #include "graminit.h" |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 18 | #include "compile.h" |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 19 | #include "symtable.h" |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 20 | #include "opcode.h" |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 21 | #include "structmember.h" |
| 22 | |
| 23 | #include <ctype.h> |
Guido van Rossum | 282914b | 1991-04-04 10:42:56 +0000 | [diff] [blame] | 24 | |
Guido van Rossum | b05a5c7 | 1997-05-07 17:46:13 +0000 | [diff] [blame] | 25 | /* Three symbols from graminit.h are also defined in Python.h, with |
| 26 | Py_ prefixes to their names. Python.h can't include graminit.h |
| 27 | (which defines too many confusing symbols), but we can check here |
| 28 | that they haven't changed (which is very unlikely, but possible). */ |
| 29 | #if Py_single_input != single_input |
Guido van Rossum | 2f75b29 | 1997-05-20 22:18:48 +0000 | [diff] [blame] | 30 | #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] | 31 | #endif |
| 32 | #if Py_file_input != file_input |
Guido van Rossum | 2f75b29 | 1997-05-20 22:18:48 +0000 | [diff] [blame] | 33 | #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] | 34 | #endif |
| 35 | #if Py_eval_input != eval_input |
Guido van Rossum | 2f75b29 | 1997-05-20 22:18:48 +0000 | [diff] [blame] | 36 | #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] | 37 | #endif |
| 38 | |
Guido van Rossum | 8e793d9 | 1997-03-03 19:13:14 +0000 | [diff] [blame] | 39 | int Py_OptimizeFlag = 0; |
| 40 | |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 41 | #define OP_DELETE 0 |
| 42 | #define OP_ASSIGN 1 |
| 43 | #define OP_APPLY 2 |
| 44 | |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 45 | #define VAR_LOAD 0 |
| 46 | #define VAR_STORE 1 |
| 47 | #define VAR_DELETE 2 |
| 48 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 49 | #define DEL_CLOSURE_ERROR \ |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 50 | "can not delete variable '%.400s' referenced in nested scope" |
| 51 | |
| 52 | #define DUPLICATE_ARGUMENT \ |
| 53 | "duplicate argument '%s' in function definition" |
| 54 | |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 55 | #define ILLEGAL_DYNAMIC_SCOPE \ |
| 56 | "%.100s: exec or 'import *' makes names ambiguous in nested scope" |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 57 | |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 58 | #define GLOBAL_AFTER_ASSIGN \ |
| 59 | "name '%.400s' is assigned to before global declaration" |
| 60 | |
| 61 | #define GLOBAL_AFTER_USE \ |
| 62 | "name '%.400s' is used prior to global declaration" |
| 63 | |
| 64 | #define LOCAL_GLOBAL \ |
| 65 | "name '%.400s' is a function paramter and declared global" |
| 66 | |
Jeremy Hylton | 39e2f3f | 2001-02-28 01:58:08 +0000 | [diff] [blame] | 67 | #define LATE_FUTURE \ |
| 68 | "from __future__ imports must occur at the beginning of the file" |
| 69 | |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 70 | #define MANGLE_LEN 256 |
| 71 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 72 | #define OFF(x) offsetof(PyCodeObject, x) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 73 | |
| 74 | static struct memberlist code_memberlist[] = { |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 75 | {"co_argcount", T_INT, OFF(co_argcount), READONLY}, |
| 76 | {"co_nlocals", T_INT, OFF(co_nlocals), READONLY}, |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 77 | {"co_stacksize",T_INT, OFF(co_stacksize), READONLY}, |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 78 | {"co_flags", T_INT, OFF(co_flags), READONLY}, |
Guido van Rossum | 39d942d | 1992-01-12 02:30:05 +0000 | [diff] [blame] | 79 | {"co_code", T_OBJECT, OFF(co_code), READONLY}, |
| 80 | {"co_consts", T_OBJECT, OFF(co_consts), READONLY}, |
| 81 | {"co_names", T_OBJECT, OFF(co_names), READONLY}, |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 82 | {"co_varnames", T_OBJECT, OFF(co_varnames), READONLY}, |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 83 | {"co_freevars", T_OBJECT, OFF(co_freevars), READONLY}, |
| 84 | {"co_cellvars", T_OBJECT, OFF(co_cellvars), READONLY}, |
Guido van Rossum | 39d942d | 1992-01-12 02:30:05 +0000 | [diff] [blame] | 85 | {"co_filename", T_OBJECT, OFF(co_filename), READONLY}, |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 86 | {"co_name", T_OBJECT, OFF(co_name), READONLY}, |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 87 | {"co_firstlineno", T_INT, OFF(co_firstlineno), READONLY}, |
| 88 | {"co_lnotab", T_OBJECT, OFF(co_lnotab), READONLY}, |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 89 | {NULL} /* Sentinel */ |
| 90 | }; |
| 91 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 92 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 93 | code_getattr(PyCodeObject *co, char *name) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 94 | { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 95 | return PyMember_Get((char *)co, code_memberlist, name); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 96 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 97 | |
| 98 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 99 | code_dealloc(PyCodeObject *co) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 100 | { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 101 | Py_XDECREF(co->co_code); |
| 102 | Py_XDECREF(co->co_consts); |
| 103 | Py_XDECREF(co->co_names); |
Guido van Rossum | 275558c | 1997-07-25 20:13:49 +0000 | [diff] [blame] | 104 | Py_XDECREF(co->co_varnames); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 105 | Py_XDECREF(co->co_freevars); |
| 106 | Py_XDECREF(co->co_cellvars); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 107 | Py_XDECREF(co->co_filename); |
| 108 | Py_XDECREF(co->co_name); |
Guido van Rossum | 275558c | 1997-07-25 20:13:49 +0000 | [diff] [blame] | 109 | Py_XDECREF(co->co_lnotab); |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 110 | PyObject_DEL(co); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 111 | } |
| 112 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 113 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 114 | code_repr(PyCodeObject *co) |
Guido van Rossum | 2dff991 | 1992-09-03 20:50:59 +0000 | [diff] [blame] | 115 | { |
| 116 | char buf[500]; |
| 117 | int lineno = -1; |
Guido van Rossum | 2dff991 | 1992-09-03 20:50:59 +0000 | [diff] [blame] | 118 | char *filename = "???"; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 119 | char *name = "???"; |
Guido van Rossum | d076c73 | 1998-10-07 19:42:25 +0000 | [diff] [blame] | 120 | |
Guido van Rossum | a396a88 | 2000-04-07 01:21:36 +0000 | [diff] [blame] | 121 | if (co->co_firstlineno != 0) |
| 122 | lineno = co->co_firstlineno; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 123 | if (co->co_filename && PyString_Check(co->co_filename)) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 124 | filename = PyString_AS_STRING(co->co_filename); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 125 | if (co->co_name && PyString_Check(co->co_name)) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 126 | name = PyString_AS_STRING(co->co_name); |
Fred Drake | 615ae55 | 2000-06-30 16:20:13 +0000 | [diff] [blame] | 127 | sprintf(buf, "<code object %.100s at %p, file \"%.300s\", line %d>", |
| 128 | name, co, filename, lineno); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 129 | return PyString_FromString(buf); |
Guido van Rossum | 2dff991 | 1992-09-03 20:50:59 +0000 | [diff] [blame] | 130 | } |
| 131 | |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 132 | static int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 133 | code_compare(PyCodeObject *co, PyCodeObject *cp) |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 134 | { |
| 135 | int cmp; |
Guido van Rossum | 4467959 | 2000-04-10 16:20:31 +0000 | [diff] [blame] | 136 | cmp = PyObject_Compare(co->co_name, cp->co_name); |
| 137 | if (cmp) return cmp; |
Guido van Rossum | beef8aa | 1997-08-29 17:12:43 +0000 | [diff] [blame] | 138 | cmp = co->co_argcount - cp->co_argcount; |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 139 | if (cmp) return cmp; |
Guido van Rossum | beef8aa | 1997-08-29 17:12:43 +0000 | [diff] [blame] | 140 | cmp = co->co_nlocals - cp->co_nlocals; |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 141 | if (cmp) return cmp; |
Guido van Rossum | beef8aa | 1997-08-29 17:12:43 +0000 | [diff] [blame] | 142 | cmp = co->co_flags - cp->co_flags; |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 143 | if (cmp) return cmp; |
Guido van Rossum | d076c73 | 1998-10-07 19:42:25 +0000 | [diff] [blame] | 144 | cmp = PyObject_Compare(co->co_code, cp->co_code); |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 145 | if (cmp) return cmp; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 146 | cmp = PyObject_Compare(co->co_consts, cp->co_consts); |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 147 | if (cmp) return cmp; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 148 | cmp = PyObject_Compare(co->co_names, cp->co_names); |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 149 | if (cmp) return cmp; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 150 | cmp = PyObject_Compare(co->co_varnames, cp->co_varnames); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 151 | if (cmp) return cmp; |
| 152 | cmp = PyObject_Compare(co->co_freevars, cp->co_freevars); |
| 153 | if (cmp) return cmp; |
| 154 | cmp = PyObject_Compare(co->co_cellvars, cp->co_cellvars); |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 155 | return cmp; |
| 156 | } |
| 157 | |
| 158 | static long |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 159 | code_hash(PyCodeObject *co) |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 160 | { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 161 | long h, h0, h1, h2, h3, h4, h5, h6; |
Guido van Rossum | 4467959 | 2000-04-10 16:20:31 +0000 | [diff] [blame] | 162 | h0 = PyObject_Hash(co->co_name); |
| 163 | if (h0 == -1) return -1; |
Guido van Rossum | d076c73 | 1998-10-07 19:42:25 +0000 | [diff] [blame] | 164 | h1 = PyObject_Hash(co->co_code); |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 165 | if (h1 == -1) return -1; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 166 | h2 = PyObject_Hash(co->co_consts); |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 167 | if (h2 == -1) return -1; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 168 | h3 = PyObject_Hash(co->co_names); |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 169 | if (h3 == -1) return -1; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 170 | h4 = PyObject_Hash(co->co_varnames); |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 171 | if (h4 == -1) return -1; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 172 | h5 = PyObject_Hash(co->co_freevars); |
| 173 | if (h5 == -1) return -1; |
| 174 | h6 = PyObject_Hash(co->co_cellvars); |
| 175 | if (h6 == -1) return -1; |
| 176 | h = h0 ^ h1 ^ h2 ^ h3 ^ h4 ^ h5 ^ h6 ^ |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 177 | co->co_argcount ^ co->co_nlocals ^ co->co_flags; |
Guido van Rossum | 2e8f8a3 | 1993-11-05 10:20:10 +0000 | [diff] [blame] | 178 | if (h == -1) h = -2; |
| 179 | return h; |
| 180 | } |
| 181 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 182 | PyTypeObject PyCode_Type = { |
| 183 | PyObject_HEAD_INIT(&PyType_Type) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 184 | 0, |
| 185 | "code", |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 186 | sizeof(PyCodeObject), |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 187 | 0, |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 188 | (destructor)code_dealloc, /*tp_dealloc*/ |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 189 | 0, /*tp_print*/ |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 190 | (getattrfunc)code_getattr, /*tp_getattr*/ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 191 | 0, /*tp_setattr*/ |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 192 | (cmpfunc)code_compare, /*tp_compare*/ |
| 193 | (reprfunc)code_repr, /*tp_repr*/ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 194 | 0, /*tp_as_number*/ |
| 195 | 0, /*tp_as_sequence*/ |
| 196 | 0, /*tp_as_mapping*/ |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 197 | (hashfunc)code_hash, /*tp_hash*/ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 198 | }; |
| 199 | |
Guido van Rossum | 644a12b | 1997-04-09 19:24:53 +0000 | [diff] [blame] | 200 | #define NAME_CHARS \ |
| 201 | "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz" |
| 202 | |
Guido van Rossum | fc5ce61 | 2001-01-19 00:24:06 +0000 | [diff] [blame] | 203 | /* all_name_chars(s): true iff all chars in s are valid NAME_CHARS */ |
| 204 | |
| 205 | static int |
| 206 | all_name_chars(unsigned char *s) |
| 207 | { |
Guido van Rossum | cd90c20 | 2001-02-09 15:06:42 +0000 | [diff] [blame] | 208 | static char ok_name_char[256]; |
| 209 | static unsigned char *name_chars = (unsigned char *)NAME_CHARS; |
Guido van Rossum | fc5ce61 | 2001-01-19 00:24:06 +0000 | [diff] [blame] | 210 | |
Guido van Rossum | cd90c20 | 2001-02-09 15:06:42 +0000 | [diff] [blame] | 211 | if (ok_name_char[*name_chars] == 0) { |
| 212 | unsigned char *p; |
| 213 | for (p = name_chars; *p; p++) |
| 214 | ok_name_char[*p] = 1; |
| 215 | } |
| 216 | while (*s) { |
| 217 | if (ok_name_char[*s++] == 0) |
| 218 | return 0; |
| 219 | } |
| 220 | return 1; |
Guido van Rossum | fc5ce61 | 2001-01-19 00:24:06 +0000 | [diff] [blame] | 221 | } |
| 222 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 223 | static int |
| 224 | intern_strings(PyObject *tuple) |
| 225 | { |
| 226 | int i; |
| 227 | |
| 228 | for (i = PyTuple_GET_SIZE(tuple); --i >= 0; ) { |
| 229 | PyObject *v = PyTuple_GET_ITEM(tuple, i); |
| 230 | if (v == NULL || !PyString_Check(v)) { |
| 231 | Py_FatalError("non-string found in code slot"); |
| 232 | PyErr_BadInternalCall(); |
| 233 | return -1; |
| 234 | } |
| 235 | PyString_InternInPlace(&PyTuple_GET_ITEM(tuple, i)); |
| 236 | } |
| 237 | return 0; |
| 238 | } |
| 239 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 240 | PyCodeObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 241 | PyCode_New(int argcount, int nlocals, int stacksize, int flags, |
| 242 | PyObject *code, PyObject *consts, PyObject *names, |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 243 | PyObject *varnames, PyObject *freevars, PyObject *cellvars, |
| 244 | PyObject *filename, PyObject *name, int firstlineno, |
| 245 | PyObject *lnotab) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 246 | { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 247 | PyCodeObject *co; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 248 | int i; |
Guido van Rossum | d076c73 | 1998-10-07 19:42:25 +0000 | [diff] [blame] | 249 | PyBufferProcs *pb; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 250 | /* Check argument types */ |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 251 | if (argcount < 0 || nlocals < 0 || |
Guido van Rossum | d076c73 | 1998-10-07 19:42:25 +0000 | [diff] [blame] | 252 | code == NULL || |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 253 | consts == NULL || !PyTuple_Check(consts) || |
| 254 | names == NULL || !PyTuple_Check(names) || |
| 255 | varnames == NULL || !PyTuple_Check(varnames) || |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 256 | freevars == NULL || !PyTuple_Check(freevars) || |
| 257 | cellvars == NULL || !PyTuple_Check(cellvars) || |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 258 | name == NULL || !PyString_Check(name) || |
| 259 | filename == NULL || !PyString_Check(filename) || |
| 260 | lnotab == NULL || !PyString_Check(lnotab)) { |
| 261 | PyErr_BadInternalCall(); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 262 | return NULL; |
| 263 | } |
Guido van Rossum | d076c73 | 1998-10-07 19:42:25 +0000 | [diff] [blame] | 264 | pb = code->ob_type->tp_as_buffer; |
| 265 | if (pb == NULL || |
| 266 | pb->bf_getreadbuffer == NULL || |
| 267 | pb->bf_getsegcount == NULL || |
| 268 | (*pb->bf_getsegcount)(code, NULL) != 1) |
| 269 | { |
| 270 | PyErr_BadInternalCall(); |
| 271 | return NULL; |
| 272 | } |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 273 | intern_strings(names); |
| 274 | intern_strings(varnames); |
| 275 | if (freevars == NULL) |
| 276 | freevars = PyTuple_New(0); |
| 277 | intern_strings(freevars); |
| 278 | if (cellvars == NULL) |
| 279 | cellvars = PyTuple_New(0); |
| 280 | intern_strings(cellvars); |
Guido van Rossum | 7b89b6a | 1997-01-18 08:02:57 +0000 | [diff] [blame] | 281 | /* Intern selected string constants */ |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 282 | for (i = PyTuple_Size(consts); --i >= 0; ) { |
| 283 | PyObject *v = PyTuple_GetItem(consts, i); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 284 | if (!PyString_Check(v)) |
Guido van Rossum | 7b89b6a | 1997-01-18 08:02:57 +0000 | [diff] [blame] | 285 | continue; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 286 | if (!all_name_chars((unsigned char *)PyString_AS_STRING(v))) |
Guido van Rossum | 7b89b6a | 1997-01-18 08:02:57 +0000 | [diff] [blame] | 287 | continue; |
| 288 | PyString_InternInPlace(&PyTuple_GET_ITEM(consts, i)); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 289 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 290 | co = PyObject_NEW(PyCodeObject, &PyCode_Type); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 291 | if (co != NULL) { |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 292 | co->co_argcount = argcount; |
| 293 | co->co_nlocals = nlocals; |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 294 | co->co_stacksize = stacksize; |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 295 | co->co_flags = flags; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 296 | Py_INCREF(code); |
Guido van Rossum | d076c73 | 1998-10-07 19:42:25 +0000 | [diff] [blame] | 297 | co->co_code = code; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 298 | Py_INCREF(consts); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 299 | co->co_consts = consts; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 300 | Py_INCREF(names); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 301 | co->co_names = names; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 302 | Py_INCREF(varnames); |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 303 | co->co_varnames = varnames; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 304 | Py_INCREF(freevars); |
| 305 | co->co_freevars = freevars; |
| 306 | Py_INCREF(cellvars); |
| 307 | co->co_cellvars = cellvars; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 308 | Py_INCREF(filename); |
Guido van Rossum | a082ce4 | 1991-06-04 19:41:56 +0000 | [diff] [blame] | 309 | co->co_filename = filename; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 310 | Py_INCREF(name); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 311 | co->co_name = name; |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 312 | co->co_firstlineno = firstlineno; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 313 | Py_INCREF(lnotab); |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 314 | co->co_lnotab = lnotab; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 315 | /* PyObject_Print((PyObject *)co, stderr, 0); */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 316 | } |
| 317 | return co; |
| 318 | } |
| 319 | |
| 320 | |
| 321 | /* Data structure used internally */ |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 322 | |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 323 | /* The compiler uses two passes to generate bytecodes. The first pass |
| 324 | builds the symbol table. The second pass generates the bytecode. |
| 325 | |
| 326 | The first pass uses a single symtable struct. The second pass uses |
| 327 | a compiling struct for each code block. The compiling structs |
| 328 | share a reference to the symtable. |
| 329 | |
| 330 | The two passes communicate via symtable_load_symbols() and via |
| 331 | is_local() and is_global(). The former initializes several slots |
| 332 | in the compiling struct: c_varnames, c_locals, c_nlocals, |
| 333 | c_argcount, c_globals, and c_flags. |
| 334 | */ |
| 335 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 336 | struct compiling { |
Fred Drake | fd1f1be | 2000-09-08 16:31:24 +0000 | [diff] [blame] | 337 | PyObject *c_code; /* string */ |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 338 | PyObject *c_consts; /* list of objects */ |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 339 | PyObject *c_const_dict; /* inverse of c_consts */ |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 340 | PyObject *c_names; /* list of strings (names) */ |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 341 | PyObject *c_name_dict; /* inverse of c_names */ |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 342 | PyObject *c_globals; /* dictionary (value=None) */ |
| 343 | PyObject *c_locals; /* dictionary (value=localID) */ |
| 344 | PyObject *c_varnames; /* list (inverse of c_locals) */ |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 345 | PyObject *c_freevars; /* dictionary (value=None) */ |
| 346 | PyObject *c_cellvars; /* list */ |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 347 | int c_nlocals; /* index of next local */ |
| 348 | int c_argcount; /* number of top-level arguments */ |
| 349 | int c_flags; /* same as co_flags */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 350 | int c_nexti; /* index into c_code */ |
| 351 | int c_errors; /* counts errors occurred */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 352 | int c_infunction; /* set when compiling a function */ |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 353 | int c_interactive; /* generating code for interactive command */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 354 | int c_loops; /* counts nested loops */ |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 355 | int c_begin; /* begin of current loop, for 'continue' */ |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 356 | int c_block[CO_MAXBLOCKS]; /* stack of block types */ |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 357 | int c_nblocks; /* current block stack level */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 358 | char *c_filename; /* filename of current node */ |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 359 | char *c_name; /* name of object (e.g. function) */ |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 360 | int c_lineno; /* Current line number */ |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 361 | int c_stacklevel; /* Current stack level */ |
| 362 | int c_maxstacklevel; /* Maximum stack level */ |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 363 | int c_firstlineno; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 364 | PyObject *c_lnotab; /* Table mapping address to line number */ |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 365 | int c_last_addr, c_last_line, c_lnotab_next; |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 366 | char *c_private; /* for private name mangling */ |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 367 | int c_tmpname; /* temporary local name counter */ |
Guido van Rossum | cd90c20 | 2001-02-09 15:06:42 +0000 | [diff] [blame] | 368 | int c_nested; /* Is block nested funcdef or lamdef? */ |
| 369 | int c_closure; /* Is nested w/freevars? */ |
| 370 | struct symtable *c_symtable; /* pointer to module symbol table */ |
Jeremy Hylton | 4db62b1 | 2001-02-27 19:07:02 +0000 | [diff] [blame] | 371 | PyFutureFeatures *c_future; /* pointer to module's __future__ */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 372 | }; |
| 373 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 374 | int is_free(int v) |
| 375 | { |
| 376 | if ((v & (USE | DEF_FREE)) |
| 377 | && !(v & (DEF_LOCAL | DEF_PARAM | DEF_GLOBAL))) |
| 378 | return 1; |
| 379 | if (v & DEF_FREE_CLASS) |
| 380 | return 1; |
| 381 | return 0; |
| 382 | } |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 383 | |
Jeremy Hylton | 5acc0c0 | 2001-02-02 20:01:10 +0000 | [diff] [blame] | 384 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 385 | com_error(struct compiling *c, PyObject *exc, char *msg) |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 386 | { |
Jeremy Hylton | 9f1b993 | 2001-02-28 07:07:43 +0000 | [diff] [blame] | 387 | PyObject *t = NULL, *v = NULL, *w = NULL, *line = NULL; |
| 388 | |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 389 | if (c == NULL) { |
| 390 | /* Error occurred via symtable call to |
| 391 | is_constant_false */ |
| 392 | PyErr_SetString(exc, msg); |
| 393 | return; |
| 394 | } |
Guido van Rossum | 635abd2 | 1997-01-06 22:56:52 +0000 | [diff] [blame] | 395 | c->c_errors++; |
Jeremy Hylton | 9f1b993 | 2001-02-28 07:07:43 +0000 | [diff] [blame] | 396 | if (c->c_lineno < 1 || c->c_interactive) { |
| 397 | /* Unknown line number or interactive input */ |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 398 | PyErr_SetString(exc, msg); |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 399 | return; |
| 400 | } |
Fred Drake | dcf08e0 | 2000-08-15 15:49:44 +0000 | [diff] [blame] | 401 | v = PyString_FromString(msg); |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 402 | if (v == NULL) |
| 403 | return; /* MemoryError, too bad */ |
Fred Drake | dcf08e0 | 2000-08-15 15:49:44 +0000 | [diff] [blame] | 404 | |
Jeremy Hylton | ad3d3f2 | 2001-02-28 17:47:12 +0000 | [diff] [blame] | 405 | line = PyErr_ProgramText(c->c_filename, c->c_lineno); |
Jeremy Hylton | 9f1b993 | 2001-02-28 07:07:43 +0000 | [diff] [blame] | 406 | if (line == NULL) { |
| 407 | Py_INCREF(Py_None); |
| 408 | line = Py_None; |
| 409 | } |
| 410 | t = Py_BuildValue("(ziOO)", c->c_filename, c->c_lineno, |
| 411 | Py_None, line); |
| 412 | if (t == NULL) |
| 413 | goto exit; |
| 414 | w = Py_BuildValue("(OO)", v, t); |
| 415 | if (w == NULL) |
| 416 | goto exit; |
| 417 | PyErr_SetObject(exc, w); |
| 418 | exit: |
| 419 | Py_XDECREF(t); |
| 420 | Py_XDECREF(v); |
| 421 | Py_XDECREF(w); |
| 422 | Py_XDECREF(line); |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 423 | } |
| 424 | |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 425 | /* Interface to the block stack */ |
| 426 | |
| 427 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 428 | block_push(struct compiling *c, int type) |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 429 | { |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 430 | if (c->c_nblocks >= CO_MAXBLOCKS) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 431 | com_error(c, PyExc_SystemError, |
| 432 | "too many statically nested blocks"); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 433 | } |
| 434 | else { |
| 435 | c->c_block[c->c_nblocks++] = type; |
| 436 | } |
| 437 | } |
| 438 | |
| 439 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 440 | block_pop(struct compiling *c, int type) |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 441 | { |
| 442 | if (c->c_nblocks > 0) |
| 443 | c->c_nblocks--; |
| 444 | 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] | 445 | com_error(c, PyExc_SystemError, "bad block pop"); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 446 | } |
| 447 | } |
| 448 | |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 449 | /* Prototype forward declarations */ |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 450 | |
Tim Peters | dbd9ba6 | 2000-07-09 03:09:57 +0000 | [diff] [blame] | 451 | static int com_init(struct compiling *, char *); |
| 452 | static void com_free(struct compiling *); |
| 453 | static void com_push(struct compiling *, int); |
| 454 | static void com_pop(struct compiling *, int); |
| 455 | static void com_done(struct compiling *); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 456 | static void com_node(struct compiling *, node *); |
| 457 | static void com_factor(struct compiling *, node *); |
Tim Peters | dbd9ba6 | 2000-07-09 03:09:57 +0000 | [diff] [blame] | 458 | static void com_addbyte(struct compiling *, int); |
| 459 | static void com_addint(struct compiling *, int); |
| 460 | static void com_addoparg(struct compiling *, int, int); |
| 461 | static void com_addfwref(struct compiling *, int, int *); |
| 462 | static void com_backpatch(struct compiling *, int); |
| 463 | static int com_add(struct compiling *, PyObject *, PyObject *, PyObject *); |
| 464 | static int com_addconst(struct compiling *, PyObject *); |
| 465 | static int com_addname(struct compiling *, PyObject *); |
| 466 | static void com_addopname(struct compiling *, int, node *); |
| 467 | static void com_list(struct compiling *, node *, int); |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 468 | static void com_list_iter(struct compiling *, node *, node *, char *); |
Tim Peters | dbd9ba6 | 2000-07-09 03:09:57 +0000 | [diff] [blame] | 469 | static int com_argdefs(struct compiling *, node *); |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 470 | static void com_assign(struct compiling *, node *, int, node *); |
| 471 | static void com_assign_name(struct compiling *, node *, int); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 472 | static PyCodeObject *icompile(node *, struct compiling *); |
| 473 | static PyCodeObject *jcompile(node *, char *, struct compiling *); |
Tim Peters | dbd9ba6 | 2000-07-09 03:09:57 +0000 | [diff] [blame] | 474 | static PyObject *parsestrplus(node *); |
| 475 | static PyObject *parsestr(char *); |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 476 | static node *get_rawdocstring(node *); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 477 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 478 | static int get_ref_type(struct compiling *, char *); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 479 | |
| 480 | /* symtable operations */ |
| 481 | static int symtable_build(struct compiling *, node *); |
| 482 | static int symtable_load_symbols(struct compiling *); |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 483 | static struct symtable *symtable_init(void); |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 484 | static void symtable_enter_scope(struct symtable *, char *, int, int); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 485 | static int symtable_exit_scope(struct symtable *); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 486 | static int symtable_add_def(struct symtable *, char *, int); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 487 | static int symtable_add_def_o(struct symtable *, PyObject *, PyObject *, int); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 488 | |
| 489 | static void symtable_node(struct symtable *, node *); |
| 490 | static void symtable_funcdef(struct symtable *, node *); |
| 491 | static void symtable_default_args(struct symtable *, node *); |
| 492 | static void symtable_params(struct symtable *, node *); |
| 493 | static void symtable_params_fplist(struct symtable *, node *n); |
| 494 | static void symtable_global(struct symtable *, node *); |
| 495 | static void symtable_import(struct symtable *, node *); |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 496 | static void symtable_assign(struct symtable *, node *, int); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 497 | static void symtable_list_comprehension(struct symtable *, node *); |
| 498 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 499 | static int symtable_update_free_vars(struct symtable *); |
| 500 | static int symtable_undo_free(struct symtable *, PyObject *, PyObject *); |
| 501 | static int symtable_check_global(struct symtable *, PyObject *, PyObject *); |
| 502 | |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 503 | /* helper */ |
| 504 | static void |
| 505 | do_pad(int pad) |
| 506 | { |
| 507 | int i; |
| 508 | for (i = 0; i < pad; ++i) |
| 509 | fprintf(stderr, " "); |
| 510 | } |
| 511 | |
| 512 | static void |
| 513 | dump(node *n, int pad, int depth) |
| 514 | { |
| 515 | int i; |
| 516 | if (depth == 0) |
| 517 | return; |
| 518 | do_pad(pad); |
| 519 | fprintf(stderr, "%d: %s\n", TYPE(n), STR(n)); |
| 520 | if (depth > 0) |
| 521 | depth--; |
| 522 | for (i = 0; i < NCH(n); ++i) |
| 523 | dump(CHILD(n, i), pad + 1, depth); |
| 524 | } |
| 525 | |
| 526 | #define DUMP(N) dump(N, 0, -1) |
| 527 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 528 | static int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 529 | com_init(struct compiling *c, char *filename) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 530 | { |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 531 | memset((void *)c, '\0', sizeof(struct compiling)); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 532 | if ((c->c_code = PyString_FromStringAndSize((char *)NULL, |
| 533 | 1000)) == NULL) |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 534 | goto fail; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 535 | if ((c->c_consts = PyList_New(0)) == NULL) |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 536 | goto fail; |
| 537 | if ((c->c_const_dict = PyDict_New()) == NULL) |
| 538 | goto fail; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 539 | if ((c->c_names = PyList_New(0)) == NULL) |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 540 | goto fail; |
| 541 | if ((c->c_name_dict = PyDict_New()) == NULL) |
| 542 | goto fail; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 543 | if ((c->c_locals = PyDict_New()) == NULL) |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 544 | goto fail; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 545 | if ((c->c_lnotab = PyString_FromStringAndSize((char *)NULL, |
| 546 | 1000)) == NULL) |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 547 | goto fail; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 548 | c->c_globals = NULL; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 549 | c->c_varnames = NULL; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 550 | c->c_freevars = NULL; |
| 551 | c->c_cellvars = NULL; |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 552 | c->c_nlocals = 0; |
| 553 | c->c_argcount = 0; |
| 554 | c->c_flags = 0; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 555 | c->c_nexti = 0; |
| 556 | c->c_errors = 0; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 557 | c->c_infunction = 0; |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 558 | c->c_interactive = 0; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 559 | c->c_loops = 0; |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 560 | c->c_begin = 0; |
| 561 | c->c_nblocks = 0; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 562 | c->c_filename = filename; |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 563 | c->c_name = "?"; |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 564 | c->c_lineno = 0; |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 565 | c->c_stacklevel = 0; |
| 566 | c->c_maxstacklevel = 0; |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 567 | c->c_firstlineno = 0; |
| 568 | c->c_last_addr = 0; |
| 569 | c->c_last_line = 0; |
Barry Warsaw | 174e801 | 2001-01-22 04:35:57 +0000 | [diff] [blame] | 570 | c->c_lnotab_next = 0; |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 571 | c->c_tmpname = 0; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 572 | c->c_nested = 0; |
| 573 | c->c_closure = 0; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 574 | c->c_symtable = NULL; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 575 | return 1; |
| 576 | |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 577 | fail: |
| 578 | com_free(c); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 579 | return 0; |
| 580 | } |
| 581 | |
| 582 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 583 | com_free(struct compiling *c) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 584 | { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 585 | Py_XDECREF(c->c_code); |
| 586 | Py_XDECREF(c->c_consts); |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 587 | Py_XDECREF(c->c_const_dict); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 588 | Py_XDECREF(c->c_names); |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 589 | Py_XDECREF(c->c_name_dict); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 590 | Py_XDECREF(c->c_globals); |
| 591 | Py_XDECREF(c->c_locals); |
| 592 | Py_XDECREF(c->c_varnames); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 593 | Py_XDECREF(c->c_freevars); |
| 594 | Py_XDECREF(c->c_cellvars); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 595 | Py_XDECREF(c->c_lnotab); |
Jeremy Hylton | 39e2f3f | 2001-02-28 01:58:08 +0000 | [diff] [blame] | 596 | if (c->c_future) |
| 597 | PyMem_Free((void *)c->c_future); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 598 | } |
| 599 | |
| 600 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 601 | com_push(struct compiling *c, int n) |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 602 | { |
| 603 | c->c_stacklevel += n; |
| 604 | if (c->c_stacklevel > c->c_maxstacklevel) |
| 605 | c->c_maxstacklevel = c->c_stacklevel; |
| 606 | } |
| 607 | |
| 608 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 609 | com_pop(struct compiling *c, int n) |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 610 | { |
| 611 | if (c->c_stacklevel < n) { |
Guido van Rossum | 90f827c | 1998-08-25 18:22:17 +0000 | [diff] [blame] | 612 | /* fprintf(stderr, |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 613 | "%s:%d: underflow! nexti=%d, level=%d, n=%d\n", |
| 614 | c->c_filename, c->c_lineno, |
Guido van Rossum | 90f827c | 1998-08-25 18:22:17 +0000 | [diff] [blame] | 615 | c->c_nexti, c->c_stacklevel, n); */ |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 616 | c->c_stacklevel = 0; |
| 617 | } |
| 618 | else |
| 619 | c->c_stacklevel -= n; |
| 620 | } |
| 621 | |
| 622 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 623 | com_done(struct compiling *c) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 624 | { |
| 625 | if (c->c_code != NULL) |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 626 | _PyString_Resize(&c->c_code, c->c_nexti); |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 627 | if (c->c_lnotab != NULL) |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 628 | _PyString_Resize(&c->c_lnotab, c->c_lnotab_next); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 629 | } |
| 630 | |
| 631 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 632 | com_addbyte(struct compiling *c, int byte) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 633 | { |
| 634 | int len; |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 635 | /*fprintf(stderr, "%3d: %3d\n", c->c_nexti, byte);*/ |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 636 | assert(byte >= 0 && byte <= 255); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 637 | if (byte < 0 || byte > 255) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 638 | com_error(c, PyExc_SystemError, |
| 639 | "com_addbyte: byte out of range"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 640 | } |
| 641 | if (c->c_code == NULL) |
| 642 | return; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 643 | len = PyString_Size(c->c_code); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 644 | if (c->c_nexti >= len) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 645 | if (_PyString_Resize(&c->c_code, len+1000) != 0) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 646 | c->c_errors++; |
| 647 | return; |
| 648 | } |
| 649 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 650 | PyString_AsString(c->c_code)[c->c_nexti++] = byte; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 651 | } |
| 652 | |
| 653 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 654 | com_addint(struct compiling *c, int x) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 655 | { |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 656 | com_addbyte(c, x & 0xff); |
| 657 | com_addbyte(c, x >> 8); /* XXX x should be positive */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 658 | } |
| 659 | |
| 660 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 661 | com_add_lnotab(struct compiling *c, int addr, int line) |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 662 | { |
| 663 | int size; |
| 664 | char *p; |
| 665 | if (c->c_lnotab == NULL) |
| 666 | return; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 667 | size = PyString_Size(c->c_lnotab); |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 668 | if (c->c_lnotab_next+2 > size) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 669 | if (_PyString_Resize(&c->c_lnotab, size + 1000) < 0) { |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 670 | c->c_errors++; |
| 671 | return; |
| 672 | } |
| 673 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 674 | p = PyString_AsString(c->c_lnotab) + c->c_lnotab_next; |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 675 | *p++ = addr; |
| 676 | *p++ = line; |
| 677 | c->c_lnotab_next += 2; |
| 678 | } |
| 679 | |
| 680 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 681 | com_set_lineno(struct compiling *c, int lineno) |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 682 | { |
| 683 | c->c_lineno = lineno; |
| 684 | if (c->c_firstlineno == 0) { |
| 685 | c->c_firstlineno = c->c_last_line = lineno; |
| 686 | } |
| 687 | else { |
| 688 | int incr_addr = c->c_nexti - c->c_last_addr; |
| 689 | int incr_line = lineno - c->c_last_line; |
| 690 | while (incr_addr > 0 || incr_line > 0) { |
| 691 | int trunc_addr = incr_addr; |
| 692 | int trunc_line = incr_line; |
| 693 | if (trunc_addr > 255) |
| 694 | trunc_addr = 255; |
| 695 | if (trunc_line > 255) |
| 696 | trunc_line = 255; |
| 697 | com_add_lnotab(c, trunc_addr, trunc_line); |
| 698 | incr_addr -= trunc_addr; |
| 699 | incr_line -= trunc_line; |
| 700 | } |
| 701 | c->c_last_addr = c->c_nexti; |
| 702 | c->c_last_line = lineno; |
| 703 | } |
| 704 | } |
| 705 | |
| 706 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 707 | com_addoparg(struct compiling *c, int op, int arg) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 708 | { |
Fred Drake | ef8ace3 | 2000-08-24 00:32:09 +0000 | [diff] [blame] | 709 | int extended_arg = arg >> 16; |
Guido van Rossum | 8e793d9 | 1997-03-03 19:13:14 +0000 | [diff] [blame] | 710 | if (op == SET_LINENO) { |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 711 | com_set_lineno(c, arg); |
Guido van Rossum | 8e793d9 | 1997-03-03 19:13:14 +0000 | [diff] [blame] | 712 | if (Py_OptimizeFlag) |
| 713 | return; |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 714 | } |
Fred Drake | ef8ace3 | 2000-08-24 00:32:09 +0000 | [diff] [blame] | 715 | if (extended_arg){ |
| 716 | com_addbyte(c, EXTENDED_ARG); |
| 717 | com_addint(c, extended_arg); |
| 718 | arg &= 0xffff; |
| 719 | } |
Guido van Rossum | 8e793d9 | 1997-03-03 19:13:14 +0000 | [diff] [blame] | 720 | com_addbyte(c, op); |
| 721 | com_addint(c, arg); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 722 | } |
| 723 | |
| 724 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 725 | com_addfwref(struct compiling *c, int op, int *p_anchor) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 726 | { |
| 727 | /* Compile a forward reference for backpatching */ |
| 728 | int here; |
| 729 | int anchor; |
| 730 | com_addbyte(c, op); |
| 731 | here = c->c_nexti; |
| 732 | anchor = *p_anchor; |
| 733 | *p_anchor = here; |
| 734 | com_addint(c, anchor == 0 ? 0 : here - anchor); |
| 735 | } |
| 736 | |
| 737 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 738 | com_backpatch(struct compiling *c, int anchor) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 739 | { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 740 | unsigned char *code = (unsigned char *) PyString_AsString(c->c_code); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 741 | int target = c->c_nexti; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 742 | int dist; |
| 743 | int prev; |
| 744 | for (;;) { |
| 745 | /* Make the JUMP instruction at anchor point to target */ |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 746 | prev = code[anchor] + (code[anchor+1] << 8); |
| 747 | dist = target - (anchor+2); |
| 748 | code[anchor] = dist & 0xff; |
Fred Drake | ef8ace3 | 2000-08-24 00:32:09 +0000 | [diff] [blame] | 749 | dist >>= 8; |
| 750 | code[anchor+1] = dist; |
| 751 | dist >>= 8; |
| 752 | if (dist) { |
| 753 | com_error(c, PyExc_SystemError, |
| 754 | "com_backpatch: offset too large"); |
| 755 | break; |
| 756 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 757 | if (!prev) |
| 758 | break; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 759 | anchor -= prev; |
| 760 | } |
| 761 | } |
| 762 | |
Guido van Rossum | a9df32a | 1991-12-31 13:13:35 +0000 | [diff] [blame] | 763 | /* Handle literals and names uniformly */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 764 | |
| 765 | static int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 766 | com_add(struct compiling *c, PyObject *list, PyObject *dict, PyObject *v) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 767 | { |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 768 | PyObject *w, *t, *np=NULL; |
| 769 | long n; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 770 | |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 771 | t = Py_BuildValue("(OO)", v, v->ob_type); |
| 772 | if (t == NULL) |
| 773 | goto fail; |
| 774 | w = PyDict_GetItem(dict, t); |
| 775 | if (w != NULL) { |
| 776 | n = PyInt_AsLong(w); |
| 777 | } else { |
| 778 | n = PyList_Size(list); |
| 779 | np = PyInt_FromLong(n); |
| 780 | if (np == NULL) |
| 781 | goto fail; |
| 782 | if (PyList_Append(list, v) != 0) |
| 783 | goto fail; |
| 784 | if (PyDict_SetItem(dict, t, np) != 0) |
| 785 | goto fail; |
| 786 | Py_DECREF(np); |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 787 | } |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 788 | Py_DECREF(t); |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 789 | return n; |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 790 | fail: |
| 791 | Py_XDECREF(np); |
| 792 | Py_XDECREF(t); |
| 793 | c->c_errors++; |
| 794 | return 0; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 795 | } |
| 796 | |
| 797 | static int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 798 | com_addconst(struct compiling *c, PyObject *v) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 799 | { |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 800 | 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] | 801 | } |
| 802 | |
| 803 | static int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 804 | com_addname(struct compiling *c, PyObject *v) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 805 | { |
Guido van Rossum | a2ace6a | 2000-04-28 16:42:25 +0000 | [diff] [blame] | 806 | 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] | 807 | } |
| 808 | |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 809 | static int |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 810 | mangle(char *p, char *name, char *buffer, size_t maxlen) |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 811 | { |
Guido van Rossum | d8a6d1c | 1996-08-24 07:54:27 +0000 | [diff] [blame] | 812 | /* Name mangling: __private becomes _classname__private. |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 813 | This is independent from how the name is used. */ |
Guido van Rossum | 582acec | 2000-06-28 22:07:35 +0000 | [diff] [blame] | 814 | size_t nlen, plen; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 815 | if (p == NULL || name == NULL || name[0] != '_' || name[1] != '_') |
| 816 | return 0; |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 817 | nlen = strlen(name); |
Guido van Rossum | d8a6d1c | 1996-08-24 07:54:27 +0000 | [diff] [blame] | 818 | if (nlen+2 >= maxlen) |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 819 | return 0; /* Don't mangle __extremely_long_names */ |
| 820 | if (name[nlen-1] == '_' && name[nlen-2] == '_') |
| 821 | return 0; /* Don't mangle __whatever__ */ |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 822 | /* Strip leading underscores from class name */ |
| 823 | while (*p == '_') |
| 824 | p++; |
| 825 | if (*p == '\0') |
| 826 | return 0; /* Don't mangle if class is just underscores */ |
| 827 | plen = strlen(p); |
| 828 | if (plen + nlen >= maxlen) |
Guido van Rossum | d8a6d1c | 1996-08-24 07:54:27 +0000 | [diff] [blame] | 829 | plen = maxlen-nlen-2; /* Truncate class name if too long */ |
| 830 | /* buffer = "_" + p[:plen] + name # i.e. 1+plen+nlen bytes */ |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 831 | buffer[0] = '_'; |
| 832 | strncpy(buffer+1, p, plen); |
Guido van Rossum | d8a6d1c | 1996-08-24 07:54:27 +0000 | [diff] [blame] | 833 | strcpy(buffer+1+plen, name); |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 834 | return 1; |
| 835 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 836 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 837 | static void |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 838 | com_addop_name(struct compiling *c, int op, char *name) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 839 | { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 840 | PyObject *v; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 841 | int i; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 842 | char buffer[MANGLE_LEN]; |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 843 | |
| 844 | if (mangle(c->c_private, name, buffer, sizeof(buffer))) |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 845 | name = buffer; |
Guido van Rossum | 7b89b6a | 1997-01-18 08:02:57 +0000 | [diff] [blame] | 846 | if (name == NULL || (v = PyString_InternFromString(name)) == NULL) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 847 | c->c_errors++; |
| 848 | i = 255; |
| 849 | } |
| 850 | else { |
| 851 | i = com_addname(c, v); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 852 | Py_DECREF(v); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 853 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 854 | com_addoparg(c, op, i); |
| 855 | } |
| 856 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 857 | #define NAME_LOCAL 0 |
| 858 | #define NAME_GLOBAL 1 |
| 859 | #define NAME_DEFAULT 2 |
| 860 | #define NAME_CLOSURE 3 |
| 861 | |
| 862 | static int |
| 863 | com_lookup_arg(PyObject *dict, PyObject *name) |
| 864 | { |
| 865 | PyObject *v = PyDict_GetItem(dict, name); |
| 866 | if (v == NULL) |
| 867 | return -1; |
| 868 | else |
| 869 | return PyInt_AS_LONG(v); |
| 870 | } |
| 871 | |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 872 | static void |
| 873 | com_addop_varname(struct compiling *c, int kind, char *name) |
| 874 | { |
| 875 | PyObject *v; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 876 | int i, reftype; |
| 877 | int scope = NAME_DEFAULT; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 878 | int op = STOP_CODE; |
| 879 | char buffer[MANGLE_LEN]; |
| 880 | |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 881 | if (mangle(c->c_private, name, buffer, sizeof(buffer))) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 882 | name = buffer; |
| 883 | if (name == NULL || (v = PyString_InternFromString(name)) == NULL) { |
| 884 | c->c_errors++; |
| 885 | i = 255; |
| 886 | goto done; |
Guido van Rossum | c5e9629 | 1991-12-10 13:53:51 +0000 | [diff] [blame] | 887 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 888 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 889 | reftype = get_ref_type(c, name); |
| 890 | switch (reftype) { |
| 891 | case LOCAL: |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 892 | if (c->c_symtable->st_cur->ste_type == TYPE_FUNCTION) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 893 | scope = NAME_LOCAL; |
| 894 | break; |
| 895 | case GLOBAL_EXPLICIT: |
| 896 | scope = NAME_GLOBAL; |
| 897 | break; |
| 898 | case GLOBAL_IMPLICIT: |
| 899 | if (c->c_flags & CO_OPTIMIZED) |
| 900 | scope = NAME_GLOBAL; |
| 901 | break; |
| 902 | case FREE: |
| 903 | case CELL: |
| 904 | scope = NAME_CLOSURE; |
| 905 | break; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 906 | } |
| 907 | |
| 908 | i = com_addname(c, v); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 909 | if (scope == NAME_LOCAL) |
| 910 | i = com_lookup_arg(c->c_locals, v); |
| 911 | else if (reftype == FREE) |
| 912 | i = com_lookup_arg(c->c_freevars, v); |
| 913 | else if (reftype == CELL) |
| 914 | i = com_lookup_arg(c->c_cellvars, v); |
| 915 | if (i == -1) { |
| 916 | c->c_errors++; /* XXX no exception set */ |
| 917 | i = 255; |
| 918 | goto done; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 919 | } |
| 920 | Py_DECREF(v); |
| 921 | |
| 922 | switch (kind) { |
| 923 | case VAR_LOAD: |
| 924 | switch (scope) { |
| 925 | case NAME_LOCAL: |
| 926 | op = LOAD_FAST; |
| 927 | break; |
| 928 | case NAME_GLOBAL: |
| 929 | op = LOAD_GLOBAL; |
| 930 | break; |
| 931 | case NAME_DEFAULT: |
| 932 | op = LOAD_NAME; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 933 | break; |
| 934 | case NAME_CLOSURE: |
| 935 | op = LOAD_DEREF; |
| 936 | break; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 937 | } |
| 938 | break; |
| 939 | case VAR_STORE: |
| 940 | switch (scope) { |
| 941 | case NAME_LOCAL: |
| 942 | op = STORE_FAST; |
| 943 | break; |
| 944 | case NAME_GLOBAL: |
| 945 | op = STORE_GLOBAL; |
| 946 | break; |
| 947 | case NAME_DEFAULT: |
| 948 | op = STORE_NAME; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 949 | break; |
| 950 | case NAME_CLOSURE: |
| 951 | op = STORE_DEREF; |
| 952 | break; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 953 | } |
| 954 | break; |
| 955 | case VAR_DELETE: |
| 956 | switch (scope) { |
| 957 | case NAME_LOCAL: |
| 958 | op = DELETE_FAST; |
| 959 | break; |
| 960 | case NAME_GLOBAL: |
| 961 | op = DELETE_GLOBAL; |
| 962 | break; |
| 963 | case NAME_DEFAULT: |
| 964 | op = DELETE_NAME; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 965 | break; |
| 966 | case NAME_CLOSURE: { |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 967 | char buf[500]; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 968 | sprintf(buf, DEL_CLOSURE_ERROR, name); |
| 969 | com_error(c, PyExc_SyntaxError, buf); |
| 970 | i = 255; |
| 971 | break; |
| 972 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 973 | } |
| 974 | break; |
| 975 | } |
| 976 | done: |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 977 | com_addoparg(c, op, i); |
| 978 | } |
| 979 | |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 980 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 981 | com_addopname(struct compiling *c, int op, node *n) |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 982 | { |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 983 | char *name; |
| 984 | char buffer[1000]; |
| 985 | /* XXX it is possible to write this code without the 1000 |
| 986 | chars on the total length of dotted names, I just can't be |
| 987 | bothered right now */ |
| 988 | if (TYPE(n) == STAR) |
| 989 | name = "*"; |
| 990 | else if (TYPE(n) == dotted_name) { |
| 991 | char *p = buffer; |
| 992 | int i; |
| 993 | name = buffer; |
| 994 | for (i = 0; i < NCH(n); i += 2) { |
| 995 | char *s = STR(CHILD(n, i)); |
| 996 | if (p + strlen(s) > buffer + (sizeof buffer) - 2) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 997 | com_error(c, PyExc_MemoryError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 998 | "dotted_name too long"); |
Guido van Rossum | d9dfaf5 | 1995-02-17 15:04:57 +0000 | [diff] [blame] | 999 | name = NULL; |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 1000 | break; |
| 1001 | } |
| 1002 | if (p != buffer) |
| 1003 | *p++ = '.'; |
| 1004 | strcpy(p, s); |
| 1005 | p = strchr(p, '\0'); |
| 1006 | } |
| 1007 | } |
| 1008 | else { |
| 1009 | REQ(n, NAME); |
| 1010 | name = STR(n); |
| 1011 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1012 | com_addop_name(c, op, name); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 1013 | } |
| 1014 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1015 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1016 | parsenumber(struct compiling *co, char *s) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1017 | { |
Guido van Rossum | c5e9629 | 1991-12-10 13:53:51 +0000 | [diff] [blame] | 1018 | char *end; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1019 | long x; |
Guido van Rossum | 0ae748d | 1997-02-14 22:58:07 +0000 | [diff] [blame] | 1020 | double dx; |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 1021 | #ifndef WITHOUT_COMPLEX |
Guido van Rossum | 530956d | 1996-07-21 02:27:43 +0000 | [diff] [blame] | 1022 | Py_complex c; |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 1023 | int imflag; |
| 1024 | #endif |
| 1025 | |
Guido van Rossum | 282914b | 1991-04-04 10:42:56 +0000 | [diff] [blame] | 1026 | errno = 0; |
Guido van Rossum | c5e9629 | 1991-12-10 13:53:51 +0000 | [diff] [blame] | 1027 | end = s + strlen(s) - 1; |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 1028 | #ifndef WITHOUT_COMPLEX |
Guido van Rossum | 15ad9a6 | 1996-01-26 20:53:56 +0000 | [diff] [blame] | 1029 | imflag = *end == 'j' || *end == 'J'; |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 1030 | #endif |
Guido van Rossum | f1aeab7 | 1992-03-27 17:28:26 +0000 | [diff] [blame] | 1031 | if (*end == 'l' || *end == 'L') |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1032 | return PyLong_FromString(s, (char **)0, 0); |
Guido van Rossum | acbefef | 1992-01-19 16:33:51 +0000 | [diff] [blame] | 1033 | if (s[0] == '0') |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1034 | x = (long) PyOS_strtoul(s, &end, 0); |
Guido van Rossum | acbefef | 1992-01-19 16:33:51 +0000 | [diff] [blame] | 1035 | else |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1036 | x = PyOS_strtol(s, &end, 0); |
Guido van Rossum | 282914b | 1991-04-04 10:42:56 +0000 | [diff] [blame] | 1037 | if (*end == '\0') { |
| 1038 | if (errno != 0) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1039 | com_error(co, PyExc_OverflowError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 1040 | "integer literal too large"); |
Guido van Rossum | 282914b | 1991-04-04 10:42:56 +0000 | [diff] [blame] | 1041 | return NULL; |
| 1042 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1043 | return PyInt_FromLong(x); |
Guido van Rossum | 282914b | 1991-04-04 10:42:56 +0000 | [diff] [blame] | 1044 | } |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 1045 | /* XXX Huge floats may silently fail */ |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 1046 | #ifndef WITHOUT_COMPLEX |
| 1047 | if (imflag) { |
| 1048 | c.real = 0.; |
Guido van Rossum | 0ae748d | 1997-02-14 22:58:07 +0000 | [diff] [blame] | 1049 | PyFPE_START_PROTECT("atof", return 0) |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 1050 | c.imag = atof(s); |
Guido van Rossum | 45b8391 | 1997-03-14 04:32:50 +0000 | [diff] [blame] | 1051 | PyFPE_END_PROTECT(c) |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1052 | return PyComplex_FromCComplex(c); |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 1053 | } |
Guido van Rossum | ac1fc95 | 1997-10-08 15:23:55 +0000 | [diff] [blame] | 1054 | else |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 1055 | #endif |
Guido van Rossum | ac1fc95 | 1997-10-08 15:23:55 +0000 | [diff] [blame] | 1056 | { |
Guido van Rossum | 0ae748d | 1997-02-14 22:58:07 +0000 | [diff] [blame] | 1057 | PyFPE_START_PROTECT("atof", return 0) |
| 1058 | dx = atof(s); |
Guido van Rossum | 45b8391 | 1997-03-14 04:32:50 +0000 | [diff] [blame] | 1059 | PyFPE_END_PROTECT(dx) |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1060 | return PyFloat_FromDouble(dx); |
Guido van Rossum | 0ae748d | 1997-02-14 22:58:07 +0000 | [diff] [blame] | 1061 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1062 | } |
| 1063 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1064 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1065 | parsestr(char *s) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1066 | { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1067 | PyObject *v; |
Guido van Rossum | 582acec | 2000-06-28 22:07:35 +0000 | [diff] [blame] | 1068 | size_t len; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1069 | char *buf; |
| 1070 | char *p; |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 1071 | char *end; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1072 | int c; |
Guido van Rossum | 5f5e817 | 1997-04-06 03:41:40 +0000 | [diff] [blame] | 1073 | int first = *s; |
| 1074 | int quote = first; |
Guido van Rossum | 5aa88f0 | 2000-03-10 23:01:36 +0000 | [diff] [blame] | 1075 | int rawmode = 0; |
| 1076 | int unicode = 0; |
| 1077 | if (isalpha(quote) || quote == '_') { |
| 1078 | if (quote == 'u' || quote == 'U') { |
| 1079 | quote = *++s; |
| 1080 | unicode = 1; |
| 1081 | } |
| 1082 | if (quote == 'r' || quote == 'R') { |
| 1083 | quote = *++s; |
| 1084 | rawmode = 1; |
| 1085 | } |
| 1086 | } |
Guido van Rossum | 8054fad | 1993-10-26 15:19:44 +0000 | [diff] [blame] | 1087 | if (quote != '\'' && quote != '\"') { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1088 | PyErr_BadInternalCall(); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1089 | return NULL; |
| 1090 | } |
| 1091 | s++; |
| 1092 | len = strlen(s); |
Guido van Rossum | 582acec | 2000-06-28 22:07:35 +0000 | [diff] [blame] | 1093 | if (len > INT_MAX) { |
| 1094 | PyErr_SetString(PyExc_OverflowError, "string to parse is too long"); |
| 1095 | return NULL; |
| 1096 | } |
Guido van Rossum | 8054fad | 1993-10-26 15:19:44 +0000 | [diff] [blame] | 1097 | if (s[--len] != quote) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1098 | PyErr_BadInternalCall(); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1099 | return NULL; |
| 1100 | } |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 1101 | if (len >= 4 && s[0] == quote && s[1] == quote) { |
| 1102 | s += 2; |
| 1103 | len -= 2; |
| 1104 | if (s[--len] != quote || s[--len] != quote) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1105 | PyErr_BadInternalCall(); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 1106 | return NULL; |
| 1107 | } |
| 1108 | } |
Guido van Rossum | fdc8bdb | 2000-05-01 17:54:56 +0000 | [diff] [blame] | 1109 | if (unicode || Py_UnicodeFlag) { |
Guido van Rossum | 5aa88f0 | 2000-03-10 23:01:36 +0000 | [diff] [blame] | 1110 | if (rawmode) |
| 1111 | return PyUnicode_DecodeRawUnicodeEscape( |
| 1112 | s, len, NULL); |
| 1113 | else |
| 1114 | return PyUnicode_DecodeUnicodeEscape( |
| 1115 | s, len, NULL); |
| 1116 | } |
Fredrik Lundh | 1fa0b89 | 2000-09-02 20:11:27 +0000 | [diff] [blame] | 1117 | if (rawmode || strchr(s, '\\') == NULL) |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1118 | return PyString_FromStringAndSize(s, len); |
| 1119 | v = PyString_FromStringAndSize((char *)NULL, len); |
Fredrik Lundh | 1fa0b89 | 2000-09-02 20:11:27 +0000 | [diff] [blame] | 1120 | if (v == NULL) |
| 1121 | return NULL; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1122 | p = buf = PyString_AsString(v); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 1123 | end = s + len; |
| 1124 | while (s < end) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1125 | if (*s != '\\') { |
| 1126 | *p++ = *s++; |
| 1127 | continue; |
| 1128 | } |
| 1129 | s++; |
| 1130 | switch (*s++) { |
| 1131 | /* XXX This assumes ASCII! */ |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 1132 | case '\n': break; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1133 | case '\\': *p++ = '\\'; break; |
| 1134 | case '\'': *p++ = '\''; break; |
Guido van Rossum | 8054fad | 1993-10-26 15:19:44 +0000 | [diff] [blame] | 1135 | case '\"': *p++ = '\"'; break; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1136 | case 'b': *p++ = '\b'; break; |
| 1137 | case 'f': *p++ = '\014'; break; /* FF */ |
| 1138 | case 't': *p++ = '\t'; break; |
| 1139 | case 'n': *p++ = '\n'; break; |
| 1140 | case 'r': *p++ = '\r'; break; |
| 1141 | case 'v': *p++ = '\013'; break; /* VT */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1142 | case 'a': *p++ = '\007'; break; /* BEL, not classic C */ |
| 1143 | case '0': case '1': case '2': case '3': |
| 1144 | case '4': case '5': case '6': case '7': |
| 1145 | c = s[-1] - '0'; |
| 1146 | if ('0' <= *s && *s <= '7') { |
| 1147 | c = (c<<3) + *s++ - '0'; |
| 1148 | if ('0' <= *s && *s <= '7') |
| 1149 | c = (c<<3) + *s++ - '0'; |
| 1150 | } |
| 1151 | *p++ = c; |
| 1152 | break; |
| 1153 | case 'x': |
Fredrik Lundh | 1fa0b89 | 2000-09-02 20:11:27 +0000 | [diff] [blame] | 1154 | if (isxdigit(Py_CHARMASK(s[0])) && isxdigit(Py_CHARMASK(s[1]))) { |
Guido van Rossum | ed1100f | 1997-10-20 23:24:07 +0000 | [diff] [blame] | 1155 | unsigned int x = 0; |
Fredrik Lundh | 1fa0b89 | 2000-09-02 20:11:27 +0000 | [diff] [blame] | 1156 | c = Py_CHARMASK(*s); |
| 1157 | s++; |
| 1158 | if (isdigit(c)) |
| 1159 | x = c - '0'; |
| 1160 | else if (islower(c)) |
| 1161 | x = 10 + c - 'a'; |
| 1162 | else |
| 1163 | x = 10 + c - 'A'; |
| 1164 | x = x << 4; |
| 1165 | c = Py_CHARMASK(*s); |
| 1166 | s++; |
| 1167 | if (isdigit(c)) |
| 1168 | x += c - '0'; |
| 1169 | else if (islower(c)) |
| 1170 | x += 10 + c - 'a'; |
| 1171 | else |
| 1172 | x += 10 + c - 'A'; |
Guido van Rossum | ed1100f | 1997-10-20 23:24:07 +0000 | [diff] [blame] | 1173 | *p++ = x; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1174 | break; |
| 1175 | } |
Fredrik Lundh | 1fa0b89 | 2000-09-02 20:11:27 +0000 | [diff] [blame] | 1176 | PyErr_SetString(PyExc_ValueError, "invalid \\x escape"); |
| 1177 | Py_DECREF(v); |
| 1178 | return NULL; |
| 1179 | default: |
| 1180 | *p++ = '\\'; |
| 1181 | *p++ = s[-1]; |
| 1182 | break; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1183 | } |
| 1184 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1185 | _PyString_Resize(&v, (int)(p - buf)); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1186 | return v; |
| 1187 | } |
| 1188 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1189 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1190 | parsestrplus(node *n) |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 1191 | { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1192 | PyObject *v; |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 1193 | int i; |
| 1194 | REQ(CHILD(n, 0), STRING); |
| 1195 | if ((v = parsestr(STR(CHILD(n, 0)))) != NULL) { |
| 1196 | /* String literal concatenation */ |
Fred Drake | 4e998bc | 2000-04-13 14:10:44 +0000 | [diff] [blame] | 1197 | for (i = 1; i < NCH(n); i++) { |
| 1198 | PyObject *s; |
| 1199 | s = parsestr(STR(CHILD(n, i))); |
| 1200 | if (s == NULL) |
| 1201 | goto onError; |
| 1202 | if (PyString_Check(v) && PyString_Check(s)) { |
| 1203 | PyString_ConcatAndDel(&v, s); |
| 1204 | if (v == NULL) |
| 1205 | goto onError; |
| 1206 | } |
| 1207 | else { |
| 1208 | PyObject *temp; |
| 1209 | temp = PyUnicode_Concat(v, s); |
| 1210 | Py_DECREF(s); |
| 1211 | if (temp == NULL) |
| 1212 | goto onError; |
| 1213 | Py_DECREF(v); |
| 1214 | v = temp; |
| 1215 | } |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 1216 | } |
| 1217 | } |
| 1218 | return v; |
Fred Drake | 4e998bc | 2000-04-13 14:10:44 +0000 | [diff] [blame] | 1219 | |
| 1220 | onError: |
| 1221 | Py_XDECREF(v); |
| 1222 | return NULL; |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 1223 | } |
| 1224 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1225 | static void |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1226 | 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] | 1227 | { |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1228 | PyObject *v; |
| 1229 | int anchor = 0; |
| 1230 | int save_begin = c->c_begin; |
| 1231 | |
| 1232 | /* list_iter: for v in expr [list_iter] */ |
| 1233 | com_node(c, CHILD(n, 3)); /* expr */ |
| 1234 | v = PyInt_FromLong(0L); |
| 1235 | if (v == NULL) |
| 1236 | c->c_errors++; |
| 1237 | com_addoparg(c, LOAD_CONST, com_addconst(c, v)); |
| 1238 | com_push(c, 1); |
| 1239 | Py_XDECREF(v); |
| 1240 | c->c_begin = c->c_nexti; |
| 1241 | com_addoparg(c, SET_LINENO, n->n_lineno); |
| 1242 | com_addfwref(c, FOR_LOOP, &anchor); |
| 1243 | com_push(c, 1); |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 1244 | com_assign(c, CHILD(n, 1), OP_ASSIGN, NULL); |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1245 | c->c_loops++; |
| 1246 | com_list_iter(c, n, e, t); |
| 1247 | c->c_loops--; |
| 1248 | com_addoparg(c, JUMP_ABSOLUTE, c->c_begin); |
| 1249 | c->c_begin = save_begin; |
| 1250 | com_backpatch(c, anchor); |
| 1251 | com_pop(c, 2); /* FOR_LOOP has popped these */ |
| 1252 | } |
| 1253 | |
| 1254 | static void |
| 1255 | com_list_if(struct compiling *c, node *n, node *e, char *t) |
| 1256 | { |
| 1257 | int anchor = 0; |
| 1258 | int a = 0; |
| 1259 | /* list_iter: 'if' test [list_iter] */ |
| 1260 | com_addoparg(c, SET_LINENO, n->n_lineno); |
| 1261 | com_node(c, CHILD(n, 1)); |
| 1262 | com_addfwref(c, JUMP_IF_FALSE, &a); |
| 1263 | com_addbyte(c, POP_TOP); |
| 1264 | com_pop(c, 1); |
| 1265 | com_list_iter(c, n, e, t); |
| 1266 | com_addfwref(c, JUMP_FORWARD, &anchor); |
| 1267 | com_backpatch(c, a); |
| 1268 | /* We jump here with an extra entry which we now pop */ |
| 1269 | com_addbyte(c, POP_TOP); |
| 1270 | com_backpatch(c, anchor); |
| 1271 | } |
| 1272 | |
| 1273 | static void |
| 1274 | com_list_iter(struct compiling *c, |
| 1275 | node *p, /* parent of list_iter node */ |
| 1276 | node *e, /* element expression node */ |
| 1277 | char *t /* name of result list temp local */) |
| 1278 | { |
| 1279 | /* list_iter is the last child in a listmaker, list_for, or list_if */ |
| 1280 | node *n = CHILD(p, NCH(p)-1); |
| 1281 | if (TYPE(n) == list_iter) { |
| 1282 | n = CHILD(n, 0); |
| 1283 | switch (TYPE(n)) { |
| 1284 | case list_for: |
| 1285 | com_list_for(c, n, e, t); |
| 1286 | break; |
| 1287 | case list_if: |
| 1288 | com_list_if(c, n, e, t); |
| 1289 | break; |
| 1290 | default: |
| 1291 | com_error(c, PyExc_SystemError, |
| 1292 | "invalid list_iter node type"); |
| 1293 | } |
| 1294 | } |
| 1295 | else { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1296 | com_addop_varname(c, VAR_LOAD, t); |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1297 | com_push(c, 1); |
| 1298 | com_node(c, e); |
| 1299 | com_addoparg(c, CALL_FUNCTION, 1); |
| 1300 | com_addbyte(c, POP_TOP); |
| 1301 | com_pop(c, 2); |
| 1302 | } |
| 1303 | } |
| 1304 | |
| 1305 | static void |
| 1306 | com_list_comprehension(struct compiling *c, node *n) |
| 1307 | { |
Skip Montanaro | 46dfa5f | 2000-08-22 02:43:07 +0000 | [diff] [blame] | 1308 | /* listmaker: test list_for */ |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1309 | char tmpname[12]; |
Tim Peters | 3081421 | 2001-02-17 05:30:26 +0000 | [diff] [blame] | 1310 | sprintf(tmpname, "_[%d]", ++c->c_tmpname); |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1311 | com_addoparg(c, BUILD_LIST, 0); |
| 1312 | com_addbyte(c, DUP_TOP); /* leave the result on the stack */ |
| 1313 | com_push(c, 2); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1314 | com_addop_name(c, LOAD_ATTR, "append"); |
| 1315 | com_addop_varname(c, VAR_STORE, tmpname); |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1316 | com_pop(c, 1); |
Skip Montanaro | 46dfa5f | 2000-08-22 02:43:07 +0000 | [diff] [blame] | 1317 | com_list_for(c, CHILD(n, 1), CHILD(n, 0), tmpname); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1318 | com_addop_varname(c, VAR_DELETE, tmpname); |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1319 | --c->c_tmpname; |
| 1320 | } |
| 1321 | |
| 1322 | static void |
| 1323 | com_listmaker(struct compiling *c, node *n) |
| 1324 | { |
Skip Montanaro | 46dfa5f | 2000-08-22 02:43:07 +0000 | [diff] [blame] | 1325 | /* listmaker: test ( list_for | (',' test)* [','] ) */ |
| 1326 | if (NCH(n) > 1 && TYPE(CHILD(n, 1)) == list_for) |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1327 | com_list_comprehension(c, n); |
| 1328 | else { |
| 1329 | int len = 0; |
| 1330 | int i; |
| 1331 | for (i = 0; i < NCH(n); i += 2, len++) |
| 1332 | com_node(c, CHILD(n, i)); |
| 1333 | com_addoparg(c, BUILD_LIST, len); |
| 1334 | com_pop(c, len-1); |
| 1335 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1336 | } |
| 1337 | |
| 1338 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1339 | com_dictmaker(struct compiling *c, node *n) |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 1340 | { |
| 1341 | int i; |
| 1342 | /* dictmaker: test ':' test (',' test ':' value)* [','] */ |
| 1343 | for (i = 0; i+2 < NCH(n); i += 4) { |
| 1344 | /* We must arrange things just right for STORE_SUBSCR. |
| 1345 | It wants the stack to look like (value) (dict) (key) */ |
| 1346 | com_addbyte(c, DUP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1347 | com_push(c, 1); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 1348 | com_node(c, CHILD(n, i+2)); /* value */ |
| 1349 | com_addbyte(c, ROT_TWO); |
| 1350 | com_node(c, CHILD(n, i)); /* key */ |
| 1351 | com_addbyte(c, STORE_SUBSCR); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1352 | com_pop(c, 3); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 1353 | } |
| 1354 | } |
| 1355 | |
| 1356 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1357 | com_atom(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1358 | { |
| 1359 | node *ch; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1360 | PyObject *v; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1361 | int i; |
| 1362 | REQ(n, atom); |
| 1363 | ch = CHILD(n, 0); |
| 1364 | switch (TYPE(ch)) { |
| 1365 | case LPAR: |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1366 | if (TYPE(CHILD(n, 1)) == RPAR) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1367 | com_addoparg(c, BUILD_TUPLE, 0); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1368 | com_push(c, 1); |
| 1369 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1370 | else |
| 1371 | com_node(c, CHILD(n, 1)); |
| 1372 | break; |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1373 | case LSQB: /* '[' [listmaker] ']' */ |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1374 | if (TYPE(CHILD(n, 1)) == RSQB) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1375 | com_addoparg(c, BUILD_LIST, 0); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1376 | com_push(c, 1); |
| 1377 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1378 | else |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1379 | com_listmaker(c, CHILD(n, 1)); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1380 | break; |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 1381 | case LBRACE: /* '{' [dictmaker] '}' */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1382 | com_addoparg(c, BUILD_MAP, 0); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1383 | com_push(c, 1); |
Skip Montanaro | 803d6e5 | 2000-08-12 18:09:51 +0000 | [diff] [blame] | 1384 | if (TYPE(CHILD(n, 1)) == dictmaker) |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 1385 | com_dictmaker(c, CHILD(n, 1)); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1386 | break; |
| 1387 | case BACKQUOTE: |
| 1388 | com_node(c, CHILD(n, 1)); |
| 1389 | com_addbyte(c, UNARY_CONVERT); |
| 1390 | break; |
| 1391 | case NUMBER: |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 1392 | if ((v = parsenumber(c, STR(ch))) == NULL) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1393 | i = 255; |
| 1394 | } |
| 1395 | else { |
| 1396 | i = com_addconst(c, v); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1397 | Py_DECREF(v); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1398 | } |
| 1399 | com_addoparg(c, LOAD_CONST, i); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1400 | com_push(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1401 | break; |
| 1402 | case STRING: |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 1403 | v = parsestrplus(n); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 1404 | if (v == NULL) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1405 | c->c_errors++; |
| 1406 | i = 255; |
| 1407 | } |
| 1408 | else { |
| 1409 | i = com_addconst(c, v); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1410 | Py_DECREF(v); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1411 | } |
| 1412 | com_addoparg(c, LOAD_CONST, i); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1413 | com_push(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1414 | break; |
| 1415 | case NAME: |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1416 | com_addop_varname(c, VAR_LOAD, STR(ch)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1417 | com_push(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1418 | break; |
| 1419 | default: |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1420 | com_error(c, PyExc_SystemError, |
| 1421 | "com_atom: unexpected node type"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1422 | } |
| 1423 | } |
| 1424 | |
| 1425 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1426 | com_slice(struct compiling *c, node *n, int op) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1427 | { |
| 1428 | if (NCH(n) == 1) { |
| 1429 | com_addbyte(c, op); |
| 1430 | } |
| 1431 | else if (NCH(n) == 2) { |
| 1432 | if (TYPE(CHILD(n, 0)) != COLON) { |
| 1433 | com_node(c, CHILD(n, 0)); |
| 1434 | com_addbyte(c, op+1); |
| 1435 | } |
| 1436 | else { |
| 1437 | com_node(c, CHILD(n, 1)); |
| 1438 | com_addbyte(c, op+2); |
| 1439 | } |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1440 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1441 | } |
| 1442 | else { |
| 1443 | com_node(c, CHILD(n, 0)); |
| 1444 | com_node(c, CHILD(n, 2)); |
| 1445 | com_addbyte(c, op+3); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1446 | com_pop(c, 2); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1447 | } |
| 1448 | } |
| 1449 | |
Guido van Rossum | 635abd2 | 1997-01-06 22:56:52 +0000 | [diff] [blame] | 1450 | static void |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 1451 | com_augassign_slice(struct compiling *c, node *n, int opcode, node *augn) |
| 1452 | { |
| 1453 | if (NCH(n) == 1) { |
| 1454 | com_addbyte(c, DUP_TOP); |
| 1455 | com_push(c, 1); |
| 1456 | com_addbyte(c, SLICE); |
| 1457 | com_node(c, augn); |
| 1458 | com_addbyte(c, opcode); |
| 1459 | com_pop(c, 1); |
| 1460 | com_addbyte(c, ROT_TWO); |
| 1461 | com_addbyte(c, STORE_SLICE); |
| 1462 | com_pop(c, 2); |
| 1463 | } else if (NCH(n) == 2 && TYPE(CHILD(n, 0)) != COLON) { |
| 1464 | com_node(c, CHILD(n, 0)); |
| 1465 | com_addoparg(c, DUP_TOPX, 2); |
| 1466 | com_push(c, 2); |
| 1467 | com_addbyte(c, SLICE+1); |
| 1468 | com_pop(c, 1); |
| 1469 | com_node(c, augn); |
| 1470 | com_addbyte(c, opcode); |
| 1471 | com_pop(c, 1); |
| 1472 | com_addbyte(c, ROT_THREE); |
| 1473 | com_addbyte(c, STORE_SLICE+1); |
| 1474 | com_pop(c, 3); |
| 1475 | } else if (NCH(n) == 2) { |
| 1476 | com_node(c, CHILD(n, 1)); |
| 1477 | com_addoparg(c, DUP_TOPX, 2); |
| 1478 | com_push(c, 2); |
| 1479 | com_addbyte(c, SLICE+2); |
| 1480 | com_pop(c, 1); |
| 1481 | com_node(c, augn); |
| 1482 | com_addbyte(c, opcode); |
| 1483 | com_pop(c, 1); |
| 1484 | com_addbyte(c, ROT_THREE); |
| 1485 | com_addbyte(c, STORE_SLICE+2); |
| 1486 | com_pop(c, 3); |
| 1487 | } else { |
| 1488 | com_node(c, CHILD(n, 0)); |
| 1489 | com_node(c, CHILD(n, 2)); |
| 1490 | com_addoparg(c, DUP_TOPX, 3); |
| 1491 | com_push(c, 3); |
| 1492 | com_addbyte(c, SLICE+3); |
| 1493 | com_pop(c, 2); |
| 1494 | com_node(c, augn); |
| 1495 | com_addbyte(c, opcode); |
| 1496 | com_pop(c, 1); |
| 1497 | com_addbyte(c, ROT_FOUR); |
| 1498 | com_addbyte(c, STORE_SLICE+3); |
| 1499 | com_pop(c, 4); |
| 1500 | } |
| 1501 | } |
| 1502 | |
| 1503 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1504 | com_argument(struct compiling *c, node *n, PyObject **pkeywords) |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 1505 | { |
| 1506 | node *m; |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1507 | REQ(n, argument); /* [test '='] test; really [keyword '='] test */ |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 1508 | if (NCH(n) == 1) { |
Guido van Rossum | 635abd2 | 1997-01-06 22:56:52 +0000 | [diff] [blame] | 1509 | if (*pkeywords != NULL) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1510 | com_error(c, PyExc_SyntaxError, |
Fred Drake | dcf08e0 | 2000-08-15 15:49:44 +0000 | [diff] [blame] | 1511 | "non-keyword arg after keyword arg"); |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 1512 | } |
| 1513 | else { |
| 1514 | com_node(c, CHILD(n, 0)); |
| 1515 | } |
Guido van Rossum | 635abd2 | 1997-01-06 22:56:52 +0000 | [diff] [blame] | 1516 | return; |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 1517 | } |
| 1518 | m = n; |
| 1519 | do { |
| 1520 | m = CHILD(m, 0); |
| 1521 | } while (NCH(m) == 1); |
| 1522 | if (TYPE(m) != NAME) { |
Tim Peters | 4e30378 | 2001-02-18 04:45:10 +0000 | [diff] [blame] | 1523 | /* f(lambda x: x[0] = 3) ends up getting parsed with |
| 1524 | * LHS test = lambda x: x[0], and RHS test = 3. |
| 1525 | * SF bug 132313 points out that complaining about a keyword |
| 1526 | * then is very confusing. |
| 1527 | */ |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1528 | com_error(c, PyExc_SyntaxError, |
Tim Peters | 4e30378 | 2001-02-18 04:45:10 +0000 | [diff] [blame] | 1529 | TYPE(m) == lambdef ? |
| 1530 | "lambda cannot contain assignment" : |
| 1531 | "keyword can't be an expression"); |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 1532 | } |
| 1533 | else { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1534 | PyObject *v = PyString_InternFromString(STR(m)); |
Guido van Rossum | 635abd2 | 1997-01-06 22:56:52 +0000 | [diff] [blame] | 1535 | if (v != NULL && *pkeywords == NULL) |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1536 | *pkeywords = PyDict_New(); |
Jeremy Hylton | 39e2f3f | 2001-02-28 01:58:08 +0000 | [diff] [blame] | 1537 | if (v == NULL) |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 1538 | c->c_errors++; |
Jeremy Hylton | 39e2f3f | 2001-02-28 01:58:08 +0000 | [diff] [blame] | 1539 | else if (*pkeywords == NULL) { |
| 1540 | c->c_errors++; |
| 1541 | Py_DECREF(v); |
| 1542 | } else { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1543 | if (PyDict_GetItem(*pkeywords, v) != NULL) |
| 1544 | com_error(c, PyExc_SyntaxError, |
Guido van Rossum | 635abd2 | 1997-01-06 22:56:52 +0000 | [diff] [blame] | 1545 | "duplicate keyword argument"); |
| 1546 | else |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1547 | if (PyDict_SetItem(*pkeywords, v, v) != 0) |
Guido van Rossum | 635abd2 | 1997-01-06 22:56:52 +0000 | [diff] [blame] | 1548 | c->c_errors++; |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 1549 | com_addoparg(c, LOAD_CONST, com_addconst(c, v)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1550 | com_push(c, 1); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1551 | Py_DECREF(v); |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 1552 | } |
| 1553 | } |
| 1554 | com_node(c, CHILD(n, 2)); |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 1555 | } |
| 1556 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1557 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1558 | com_call_function(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1559 | { |
| 1560 | if (TYPE(n) == RPAR) { |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 1561 | com_addoparg(c, CALL_FUNCTION, 0); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1562 | } |
| 1563 | else { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1564 | PyObject *keywords = NULL; |
Guido van Rossum | 635abd2 | 1997-01-06 22:56:52 +0000 | [diff] [blame] | 1565 | int i, na, nk; |
Guido van Rossum | ca90605 | 1998-12-10 16:56:22 +0000 | [diff] [blame] | 1566 | int lineno = n->n_lineno; |
Jeremy Hylton | 7690151 | 2000-03-28 23:49:17 +0000 | [diff] [blame] | 1567 | int star_flag = 0; |
| 1568 | int starstar_flag = 0; |
| 1569 | int opcode; |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 1570 | REQ(n, arglist); |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 1571 | na = 0; |
| 1572 | nk = 0; |
| 1573 | for (i = 0; i < NCH(n); i += 2) { |
Guido van Rossum | ca90605 | 1998-12-10 16:56:22 +0000 | [diff] [blame] | 1574 | node *ch = CHILD(n, i); |
Jeremy Hylton | 7690151 | 2000-03-28 23:49:17 +0000 | [diff] [blame] | 1575 | if (TYPE(ch) == STAR || |
| 1576 | TYPE(ch) == DOUBLESTAR) |
| 1577 | break; |
Guido van Rossum | ca90605 | 1998-12-10 16:56:22 +0000 | [diff] [blame] | 1578 | if (ch->n_lineno != lineno) { |
| 1579 | lineno = ch->n_lineno; |
| 1580 | com_addoparg(c, SET_LINENO, lineno); |
| 1581 | } |
| 1582 | com_argument(c, ch, &keywords); |
Guido van Rossum | 635abd2 | 1997-01-06 22:56:52 +0000 | [diff] [blame] | 1583 | if (keywords == NULL) |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 1584 | na++; |
| 1585 | else |
| 1586 | nk++; |
| 1587 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1588 | Py_XDECREF(keywords); |
Jeremy Hylton | 7690151 | 2000-03-28 23:49:17 +0000 | [diff] [blame] | 1589 | while (i < NCH(n)) { |
| 1590 | node *tok = CHILD(n, i); |
| 1591 | node *ch = CHILD(n, i+1); |
| 1592 | i += 3; |
| 1593 | switch (TYPE(tok)) { |
| 1594 | case STAR: star_flag = 1; break; |
| 1595 | case DOUBLESTAR: starstar_flag = 1; break; |
| 1596 | } |
| 1597 | com_node(c, ch); |
| 1598 | } |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 1599 | if (na > 255 || nk > 255) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1600 | com_error(c, PyExc_SyntaxError, |
| 1601 | "more than 255 arguments"); |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 1602 | } |
Jeremy Hylton | 7690151 | 2000-03-28 23:49:17 +0000 | [diff] [blame] | 1603 | if (star_flag || starstar_flag) |
Jeremy Hylton | e4fb958 | 2000-03-29 00:10:44 +0000 | [diff] [blame] | 1604 | opcode = CALL_FUNCTION_VAR - 1 + |
Jeremy Hylton | 7690151 | 2000-03-28 23:49:17 +0000 | [diff] [blame] | 1605 | star_flag + (starstar_flag << 1); |
| 1606 | else |
| 1607 | opcode = CALL_FUNCTION; |
| 1608 | com_addoparg(c, opcode, na | (nk << 8)); |
| 1609 | com_pop(c, na + 2*nk + star_flag + starstar_flag); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1610 | } |
| 1611 | } |
| 1612 | |
| 1613 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1614 | com_select_member(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1615 | { |
| 1616 | com_addopname(c, LOAD_ATTR, n); |
| 1617 | } |
| 1618 | |
| 1619 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1620 | com_sliceobj(struct compiling *c, node *n) |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 1621 | { |
| 1622 | int i=0; |
| 1623 | int ns=2; /* number of slice arguments */ |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 1624 | node *ch; |
| 1625 | |
| 1626 | /* first argument */ |
| 1627 | if (TYPE(CHILD(n,i)) == COLON) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1628 | com_addoparg(c, LOAD_CONST, com_addconst(c, Py_None)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1629 | com_push(c, 1); |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 1630 | i++; |
| 1631 | } |
| 1632 | else { |
| 1633 | com_node(c, CHILD(n,i)); |
| 1634 | i++; |
| 1635 | REQ(CHILD(n,i),COLON); |
| 1636 | i++; |
| 1637 | } |
| 1638 | /* second argument */ |
| 1639 | if (i < NCH(n) && TYPE(CHILD(n,i)) == test) { |
| 1640 | com_node(c, CHILD(n,i)); |
| 1641 | i++; |
| 1642 | } |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1643 | else { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1644 | com_addoparg(c, LOAD_CONST, com_addconst(c, Py_None)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1645 | com_push(c, 1); |
| 1646 | } |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 1647 | /* remaining arguments */ |
| 1648 | for (; i < NCH(n); i++) { |
| 1649 | ns++; |
| 1650 | ch=CHILD(n,i); |
| 1651 | REQ(ch, sliceop); |
| 1652 | if (NCH(ch) == 1) { |
| 1653 | /* right argument of ':' missing */ |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1654 | com_addoparg(c, LOAD_CONST, com_addconst(c, Py_None)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1655 | com_push(c, 1); |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 1656 | } |
| 1657 | else |
| 1658 | com_node(c, CHILD(ch,1)); |
| 1659 | } |
| 1660 | com_addoparg(c, BUILD_SLICE, ns); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1661 | com_pop(c, 1 + (ns == 3)); |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 1662 | } |
| 1663 | |
| 1664 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1665 | com_subscript(struct compiling *c, node *n) |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 1666 | { |
| 1667 | node *ch; |
| 1668 | REQ(n, subscript); |
| 1669 | ch = CHILD(n,0); |
| 1670 | /* check for rubber index */ |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1671 | if (TYPE(ch) == DOT && TYPE(CHILD(n,1)) == DOT) { |
Guido van Rossum | e449af7 | 1996-10-11 16:25:41 +0000 | [diff] [blame] | 1672 | com_addoparg(c, LOAD_CONST, com_addconst(c, Py_Ellipsis)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1673 | com_push(c, 1); |
| 1674 | } |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 1675 | else { |
| 1676 | /* check for slice */ |
| 1677 | if ((TYPE(ch) == COLON || NCH(n) > 1)) |
| 1678 | com_sliceobj(c, n); |
| 1679 | else { |
| 1680 | REQ(ch, test); |
| 1681 | com_node(c, ch); |
| 1682 | } |
| 1683 | } |
| 1684 | } |
| 1685 | |
| 1686 | static void |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 1687 | com_subscriptlist(struct compiling *c, node *n, int assigning, node *augn) |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 1688 | { |
| 1689 | int i, op; |
| 1690 | REQ(n, subscriptlist); |
| 1691 | /* Check to make backward compatible slice behavior for '[i:j]' */ |
| 1692 | if (NCH(n) == 1) { |
| 1693 | node *sub = CHILD(n, 0); /* subscript */ |
Thomas Wouters | e8643c4 | 2000-08-05 21:37:50 +0000 | [diff] [blame] | 1694 | /* 'Basic' slice, should have exactly one colon. */ |
| 1695 | if ((TYPE(CHILD(sub, 0)) == COLON |
| 1696 | || (NCH(sub) > 1 && TYPE(CHILD(sub, 1)) == COLON)) |
| 1697 | && (TYPE(CHILD(sub,NCH(sub)-1)) != sliceop)) |
| 1698 | { |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 1699 | switch (assigning) { |
| 1700 | case OP_DELETE: |
| 1701 | op = DELETE_SLICE; |
| 1702 | break; |
| 1703 | case OP_ASSIGN: |
| 1704 | op = STORE_SLICE; |
| 1705 | break; |
| 1706 | case OP_APPLY: |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 1707 | op = SLICE; |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 1708 | break; |
| 1709 | default: |
| 1710 | com_augassign_slice(c, sub, assigning, augn); |
| 1711 | return; |
| 1712 | } |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 1713 | com_slice(c, sub, op); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1714 | if (op == STORE_SLICE) |
| 1715 | com_pop(c, 2); |
| 1716 | else if (op == DELETE_SLICE) |
| 1717 | com_pop(c, 1); |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 1718 | return; |
| 1719 | } |
| 1720 | } |
| 1721 | /* Else normal subscriptlist. Compile each subscript. */ |
| 1722 | for (i = 0; i < NCH(n); i += 2) |
| 1723 | com_subscript(c, CHILD(n, i)); |
| 1724 | /* Put multiple subscripts into a tuple */ |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1725 | if (NCH(n) > 1) { |
| 1726 | i = (NCH(n)+1) / 2; |
| 1727 | com_addoparg(c, BUILD_TUPLE, i); |
| 1728 | com_pop(c, i-1); |
| 1729 | } |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 1730 | switch (assigning) { |
| 1731 | case OP_DELETE: |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1732 | op = DELETE_SUBSCR; |
| 1733 | i = 2; |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 1734 | break; |
| 1735 | default: |
| 1736 | case OP_ASSIGN: |
| 1737 | op = STORE_SUBSCR; |
| 1738 | i = 3; |
| 1739 | break; |
| 1740 | case OP_APPLY: |
| 1741 | op = BINARY_SUBSCR; |
| 1742 | i = 1; |
| 1743 | break; |
| 1744 | } |
| 1745 | if (assigning > OP_APPLY) { |
| 1746 | com_addoparg(c, DUP_TOPX, 2); |
| 1747 | com_push(c, 2); |
| 1748 | com_addbyte(c, BINARY_SUBSCR); |
| 1749 | com_pop(c, 1); |
| 1750 | com_node(c, augn); |
| 1751 | com_addbyte(c, assigning); |
| 1752 | com_pop(c, 1); |
| 1753 | com_addbyte(c, ROT_THREE); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1754 | } |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 1755 | com_addbyte(c, op); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1756 | com_pop(c, i); |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 1757 | } |
| 1758 | |
| 1759 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1760 | com_apply_trailer(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1761 | { |
| 1762 | REQ(n, trailer); |
| 1763 | switch (TYPE(CHILD(n, 0))) { |
| 1764 | case LPAR: |
| 1765 | com_call_function(c, CHILD(n, 1)); |
| 1766 | break; |
| 1767 | case DOT: |
| 1768 | com_select_member(c, CHILD(n, 1)); |
| 1769 | break; |
| 1770 | case LSQB: |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 1771 | com_subscriptlist(c, CHILD(n, 1), OP_APPLY, NULL); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1772 | break; |
| 1773 | default: |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1774 | com_error(c, PyExc_SystemError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 1775 | "com_apply_trailer: unknown trailer type"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1776 | } |
| 1777 | } |
| 1778 | |
| 1779 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1780 | com_power(struct compiling *c, node *n) |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 1781 | { |
| 1782 | int i; |
| 1783 | REQ(n, power); |
| 1784 | com_atom(c, CHILD(n, 0)); |
| 1785 | for (i = 1; i < NCH(n); i++) { |
| 1786 | if (TYPE(CHILD(n, i)) == DOUBLESTAR) { |
| 1787 | com_factor(c, CHILD(n, i+1)); |
| 1788 | com_addbyte(c, BINARY_POWER); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1789 | com_pop(c, 1); |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 1790 | break; |
| 1791 | } |
| 1792 | else |
| 1793 | com_apply_trailer(c, CHILD(n, i)); |
| 1794 | } |
| 1795 | } |
| 1796 | |
| 1797 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1798 | com_factor(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1799 | { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1800 | REQ(n, factor); |
| 1801 | if (TYPE(CHILD(n, 0)) == PLUS) { |
| 1802 | com_factor(c, CHILD(n, 1)); |
| 1803 | com_addbyte(c, UNARY_POSITIVE); |
| 1804 | } |
| 1805 | else if (TYPE(CHILD(n, 0)) == MINUS) { |
| 1806 | com_factor(c, CHILD(n, 1)); |
| 1807 | com_addbyte(c, UNARY_NEGATIVE); |
| 1808 | } |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 1809 | else if (TYPE(CHILD(n, 0)) == TILDE) { |
| 1810 | com_factor(c, CHILD(n, 1)); |
| 1811 | com_addbyte(c, UNARY_INVERT); |
| 1812 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1813 | else { |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 1814 | com_power(c, CHILD(n, 0)); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1815 | } |
| 1816 | } |
| 1817 | |
| 1818 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1819 | com_term(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1820 | { |
| 1821 | int i; |
| 1822 | int op; |
| 1823 | REQ(n, term); |
| 1824 | com_factor(c, CHILD(n, 0)); |
| 1825 | for (i = 2; i < NCH(n); i += 2) { |
| 1826 | com_factor(c, CHILD(n, i)); |
| 1827 | switch (TYPE(CHILD(n, i-1))) { |
| 1828 | case STAR: |
| 1829 | op = BINARY_MULTIPLY; |
| 1830 | break; |
| 1831 | case SLASH: |
| 1832 | op = BINARY_DIVIDE; |
| 1833 | break; |
| 1834 | case PERCENT: |
| 1835 | op = BINARY_MODULO; |
| 1836 | break; |
| 1837 | default: |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1838 | com_error(c, PyExc_SystemError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 1839 | "com_term: operator not *, / or %"); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 1840 | op = 255; |
| 1841 | } |
| 1842 | com_addbyte(c, op); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1843 | com_pop(c, 1); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 1844 | } |
| 1845 | } |
| 1846 | |
| 1847 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1848 | com_arith_expr(struct compiling *c, node *n) |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 1849 | { |
| 1850 | int i; |
| 1851 | int op; |
| 1852 | REQ(n, arith_expr); |
| 1853 | com_term(c, CHILD(n, 0)); |
| 1854 | for (i = 2; i < NCH(n); i += 2) { |
| 1855 | com_term(c, CHILD(n, i)); |
| 1856 | switch (TYPE(CHILD(n, i-1))) { |
| 1857 | case PLUS: |
| 1858 | op = BINARY_ADD; |
| 1859 | break; |
| 1860 | case MINUS: |
| 1861 | op = BINARY_SUBTRACT; |
| 1862 | break; |
| 1863 | default: |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1864 | com_error(c, PyExc_SystemError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 1865 | "com_arith_expr: operator not + or -"); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 1866 | op = 255; |
| 1867 | } |
| 1868 | com_addbyte(c, op); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1869 | com_pop(c, 1); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 1870 | } |
| 1871 | } |
| 1872 | |
| 1873 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1874 | com_shift_expr(struct compiling *c, node *n) |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 1875 | { |
| 1876 | int i; |
| 1877 | int op; |
| 1878 | REQ(n, shift_expr); |
| 1879 | com_arith_expr(c, CHILD(n, 0)); |
| 1880 | for (i = 2; i < NCH(n); i += 2) { |
| 1881 | com_arith_expr(c, CHILD(n, i)); |
| 1882 | switch (TYPE(CHILD(n, i-1))) { |
| 1883 | case LEFTSHIFT: |
| 1884 | op = BINARY_LSHIFT; |
| 1885 | break; |
| 1886 | case RIGHTSHIFT: |
| 1887 | op = BINARY_RSHIFT; |
| 1888 | break; |
| 1889 | default: |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1890 | com_error(c, PyExc_SystemError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 1891 | "com_shift_expr: operator not << or >>"); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 1892 | op = 255; |
| 1893 | } |
| 1894 | com_addbyte(c, op); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1895 | com_pop(c, 1); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 1896 | } |
| 1897 | } |
| 1898 | |
| 1899 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1900 | com_and_expr(struct compiling *c, node *n) |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 1901 | { |
| 1902 | int i; |
| 1903 | int op; |
| 1904 | REQ(n, and_expr); |
| 1905 | com_shift_expr(c, CHILD(n, 0)); |
| 1906 | for (i = 2; i < NCH(n); i += 2) { |
| 1907 | com_shift_expr(c, CHILD(n, i)); |
| 1908 | if (TYPE(CHILD(n, i-1)) == AMPER) { |
| 1909 | op = BINARY_AND; |
| 1910 | } |
| 1911 | else { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1912 | com_error(c, PyExc_SystemError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 1913 | "com_and_expr: operator not &"); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 1914 | op = 255; |
| 1915 | } |
| 1916 | com_addbyte(c, op); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1917 | com_pop(c, 1); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 1918 | } |
| 1919 | } |
| 1920 | |
| 1921 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1922 | com_xor_expr(struct compiling *c, node *n) |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 1923 | { |
| 1924 | int i; |
| 1925 | int op; |
| 1926 | REQ(n, xor_expr); |
| 1927 | com_and_expr(c, CHILD(n, 0)); |
| 1928 | for (i = 2; i < NCH(n); i += 2) { |
| 1929 | com_and_expr(c, CHILD(n, i)); |
| 1930 | if (TYPE(CHILD(n, i-1)) == CIRCUMFLEX) { |
| 1931 | op = BINARY_XOR; |
| 1932 | } |
| 1933 | else { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1934 | com_error(c, PyExc_SystemError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 1935 | "com_xor_expr: operator not ^"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1936 | op = 255; |
| 1937 | } |
| 1938 | com_addbyte(c, op); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1939 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1940 | } |
| 1941 | } |
| 1942 | |
| 1943 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1944 | com_expr(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1945 | { |
| 1946 | int i; |
| 1947 | int op; |
| 1948 | REQ(n, expr); |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 1949 | com_xor_expr(c, CHILD(n, 0)); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1950 | for (i = 2; i < NCH(n); i += 2) { |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 1951 | com_xor_expr(c, CHILD(n, i)); |
| 1952 | if (TYPE(CHILD(n, i-1)) == VBAR) { |
| 1953 | op = BINARY_OR; |
| 1954 | } |
| 1955 | else { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 1956 | com_error(c, PyExc_SystemError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 1957 | "com_expr: expr operator not |"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1958 | op = 255; |
| 1959 | } |
| 1960 | com_addbyte(c, op); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 1961 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1962 | } |
| 1963 | } |
| 1964 | |
| 1965 | static enum cmp_op |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1966 | cmp_type(node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1967 | { |
| 1968 | REQ(n, comp_op); |
Guido van Rossum | 01cfd44 | 1991-10-20 20:12:38 +0000 | [diff] [blame] | 1969 | /* comp_op: '<' | '>' | '=' | '>=' | '<=' | '<>' | '!=' | '==' |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1970 | | 'in' | 'not' 'in' | 'is' | 'is' not' */ |
| 1971 | if (NCH(n) == 1) { |
| 1972 | n = CHILD(n, 0); |
| 1973 | switch (TYPE(n)) { |
| 1974 | case LESS: return LT; |
| 1975 | case GREATER: return GT; |
Guido van Rossum | 01cfd44 | 1991-10-20 20:12:38 +0000 | [diff] [blame] | 1976 | case EQEQUAL: /* == */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1977 | case EQUAL: return EQ; |
Guido van Rossum | 01cfd44 | 1991-10-20 20:12:38 +0000 | [diff] [blame] | 1978 | case LESSEQUAL: return LE; |
| 1979 | case GREATEREQUAL: return GE; |
| 1980 | case NOTEQUAL: return NE; /* <> or != */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1981 | case NAME: if (strcmp(STR(n), "in") == 0) return IN; |
| 1982 | if (strcmp(STR(n), "is") == 0) return IS; |
| 1983 | } |
| 1984 | } |
| 1985 | else if (NCH(n) == 2) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1986 | switch (TYPE(CHILD(n, 0))) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1987 | case NAME: if (strcmp(STR(CHILD(n, 1)), "in") == 0) |
| 1988 | return NOT_IN; |
| 1989 | if (strcmp(STR(CHILD(n, 0)), "is") == 0) |
| 1990 | return IS_NOT; |
| 1991 | } |
| 1992 | } |
| 1993 | return BAD; |
| 1994 | } |
| 1995 | |
| 1996 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 1997 | com_comparison(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1998 | { |
| 1999 | int i; |
| 2000 | enum cmp_op op; |
| 2001 | int anchor; |
| 2002 | REQ(n, comparison); /* comparison: expr (comp_op expr)* */ |
| 2003 | com_expr(c, CHILD(n, 0)); |
| 2004 | if (NCH(n) == 1) |
| 2005 | return; |
| 2006 | |
| 2007 | /**************************************************************** |
| 2008 | The following code is generated for all but the last |
| 2009 | comparison in a chain: |
| 2010 | |
| 2011 | label: on stack: opcode: jump to: |
| 2012 | |
| 2013 | a <code to load b> |
| 2014 | a, b DUP_TOP |
| 2015 | a, b, b ROT_THREE |
| 2016 | b, a, b COMPARE_OP |
| 2017 | b, 0-or-1 JUMP_IF_FALSE L1 |
| 2018 | b, 1 POP_TOP |
| 2019 | b |
| 2020 | |
| 2021 | We are now ready to repeat this sequence for the next |
| 2022 | comparison in the chain. |
| 2023 | |
| 2024 | For the last we generate: |
| 2025 | |
| 2026 | b <code to load c> |
| 2027 | b, c COMPARE_OP |
| 2028 | 0-or-1 |
| 2029 | |
| 2030 | If there were any jumps to L1 (i.e., there was more than one |
| 2031 | comparison), we generate: |
| 2032 | |
| 2033 | 0-or-1 JUMP_FORWARD L2 |
| 2034 | L1: b, 0 ROT_TWO |
| 2035 | 0, b POP_TOP |
| 2036 | 0 |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2037 | L2: 0-or-1 |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2038 | ****************************************************************/ |
| 2039 | |
| 2040 | anchor = 0; |
| 2041 | |
| 2042 | for (i = 2; i < NCH(n); i += 2) { |
| 2043 | com_expr(c, CHILD(n, i)); |
| 2044 | if (i+2 < NCH(n)) { |
| 2045 | com_addbyte(c, DUP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2046 | com_push(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2047 | com_addbyte(c, ROT_THREE); |
| 2048 | } |
| 2049 | op = cmp_type(CHILD(n, i-1)); |
| 2050 | if (op == BAD) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2051 | com_error(c, PyExc_SystemError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 2052 | "com_comparison: unknown comparison op"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2053 | } |
| 2054 | com_addoparg(c, COMPARE_OP, op); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2055 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2056 | if (i+2 < NCH(n)) { |
| 2057 | com_addfwref(c, JUMP_IF_FALSE, &anchor); |
| 2058 | com_addbyte(c, POP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2059 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2060 | } |
| 2061 | } |
| 2062 | |
| 2063 | if (anchor) { |
| 2064 | int anchor2 = 0; |
| 2065 | com_addfwref(c, JUMP_FORWARD, &anchor2); |
| 2066 | com_backpatch(c, anchor); |
| 2067 | com_addbyte(c, ROT_TWO); |
| 2068 | com_addbyte(c, POP_TOP); |
| 2069 | com_backpatch(c, anchor2); |
| 2070 | } |
| 2071 | } |
| 2072 | |
| 2073 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2074 | com_not_test(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2075 | { |
| 2076 | REQ(n, not_test); /* 'not' not_test | comparison */ |
| 2077 | if (NCH(n) == 1) { |
| 2078 | com_comparison(c, CHILD(n, 0)); |
| 2079 | } |
| 2080 | else { |
| 2081 | com_not_test(c, CHILD(n, 1)); |
| 2082 | com_addbyte(c, UNARY_NOT); |
| 2083 | } |
| 2084 | } |
| 2085 | |
| 2086 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2087 | com_and_test(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2088 | { |
| 2089 | int i; |
| 2090 | int anchor; |
| 2091 | REQ(n, and_test); /* not_test ('and' not_test)* */ |
| 2092 | anchor = 0; |
| 2093 | i = 0; |
| 2094 | for (;;) { |
| 2095 | com_not_test(c, CHILD(n, i)); |
| 2096 | if ((i += 2) >= NCH(n)) |
| 2097 | break; |
| 2098 | com_addfwref(c, JUMP_IF_FALSE, &anchor); |
| 2099 | com_addbyte(c, POP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2100 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2101 | } |
| 2102 | if (anchor) |
| 2103 | com_backpatch(c, anchor); |
| 2104 | } |
| 2105 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 2106 | static int |
| 2107 | com_make_closure(struct compiling *c, PyCodeObject *co) |
| 2108 | { |
| 2109 | int i, free = PyTuple_GET_SIZE(co->co_freevars); |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 2110 | /* If the code is compiled with st->st_nested_scopes == 0, |
| 2111 | then no variable will ever be added to co_freevars. |
| 2112 | */ |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 2113 | if (free == 0) |
| 2114 | return 0; |
| 2115 | for (i = 0; i < free; ++i) { |
| 2116 | /* Bypass com_addop_varname because it will generate |
| 2117 | LOAD_DEREF but LOAD_CLOSURE is needed. |
| 2118 | */ |
| 2119 | PyObject *name = PyTuple_GET_ITEM(co->co_freevars, i); |
| 2120 | int arg, reftype; |
| 2121 | |
| 2122 | /* Special case: If a class contains a method with a |
| 2123 | free variable that has the same name as a method, |
| 2124 | the name will be considered free *and* local in the |
| 2125 | class. It should be handled by the closure, as |
| 2126 | well as by the normal name loookup logic. |
| 2127 | */ |
| 2128 | reftype = get_ref_type(c, PyString_AS_STRING(name)); |
| 2129 | if (reftype == CELL) |
| 2130 | arg = com_lookup_arg(c->c_cellvars, name); |
| 2131 | else /* (reftype == FREE) */ |
| 2132 | arg = com_lookup_arg(c->c_freevars, name); |
| 2133 | if (arg == -1) { |
| 2134 | fprintf(stderr, "lookup %s in %s %d %d\n", |
Jeremy Hylton | 483638c | 2001-02-01 20:20:45 +0000 | [diff] [blame] | 2135 | PyObject_REPR(name), c->c_name, reftype, arg); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 2136 | Py_FatalError("com_make_closure()"); |
| 2137 | } |
| 2138 | com_addoparg(c, LOAD_CLOSURE, arg); |
| 2139 | |
| 2140 | } |
| 2141 | com_push(c, free); |
| 2142 | return 1; |
| 2143 | } |
| 2144 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2145 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2146 | com_test(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2147 | { |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2148 | REQ(n, test); /* and_test ('or' and_test)* | lambdef */ |
Guido van Rossum | 57531fe | 1993-11-30 14:57:42 +0000 | [diff] [blame] | 2149 | if (NCH(n) == 1 && TYPE(CHILD(n, 0)) == lambdef) { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 2150 | PyObject *co; |
| 2151 | int i, closure; |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 2152 | int ndefs = com_argdefs(c, CHILD(n, 0)); |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 2153 | symtable_enter_scope(c->c_symtable, "lambda", lambdef, |
| 2154 | n->n_lineno); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 2155 | co = (PyObject *) icompile(CHILD(n, 0), c); |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 2156 | if (co == NULL) { |
| 2157 | c->c_errors++; |
| 2158 | return; |
| 2159 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 2160 | symtable_exit_scope(c->c_symtable); |
Tim Peters | 1e54211 | 2001-02-23 22:23:53 +0000 | [diff] [blame] | 2161 | i = com_addconst(c, co); |
| 2162 | closure = com_make_closure(c, (PyCodeObject *)co); |
| 2163 | Py_DECREF(co); |
Guido van Rossum | 57531fe | 1993-11-30 14:57:42 +0000 | [diff] [blame] | 2164 | com_addoparg(c, LOAD_CONST, i); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2165 | com_push(c, 1); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 2166 | if (closure) |
| 2167 | com_addoparg(c, MAKE_CLOSURE, ndefs); |
| 2168 | else |
| 2169 | com_addoparg(c, MAKE_FUNCTION, ndefs); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2170 | com_pop(c, ndefs); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2171 | } |
Guido van Rossum | 57531fe | 1993-11-30 14:57:42 +0000 | [diff] [blame] | 2172 | else { |
| 2173 | int anchor = 0; |
| 2174 | int i = 0; |
| 2175 | for (;;) { |
| 2176 | com_and_test(c, CHILD(n, i)); |
| 2177 | if ((i += 2) >= NCH(n)) |
| 2178 | break; |
| 2179 | com_addfwref(c, JUMP_IF_TRUE, &anchor); |
| 2180 | com_addbyte(c, POP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2181 | com_pop(c, 1); |
Guido van Rossum | 57531fe | 1993-11-30 14:57:42 +0000 | [diff] [blame] | 2182 | } |
| 2183 | if (anchor) |
| 2184 | com_backpatch(c, anchor); |
| 2185 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2186 | } |
| 2187 | |
| 2188 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2189 | com_list(struct compiling *c, node *n, int toplevel) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2190 | { |
| 2191 | /* exprlist: expr (',' expr)* [',']; likewise for testlist */ |
Guido van Rossum | 288a60f | 1991-12-16 13:05:10 +0000 | [diff] [blame] | 2192 | if (NCH(n) == 1 && !toplevel) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2193 | com_node(c, CHILD(n, 0)); |
| 2194 | } |
| 2195 | else { |
| 2196 | int i; |
| 2197 | int len; |
| 2198 | len = (NCH(n) + 1) / 2; |
| 2199 | for (i = 0; i < NCH(n); i += 2) |
| 2200 | com_node(c, CHILD(n, i)); |
| 2201 | com_addoparg(c, BUILD_TUPLE, len); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2202 | com_pop(c, len-1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2203 | } |
| 2204 | } |
| 2205 | |
| 2206 | |
| 2207 | /* Begin of assignment compilation */ |
| 2208 | |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2209 | |
| 2210 | static void |
| 2211 | com_augassign_attr(struct compiling *c, node *n, int opcode, node *augn) |
| 2212 | { |
| 2213 | com_addbyte(c, DUP_TOP); |
| 2214 | com_push(c, 1); |
| 2215 | com_addopname(c, LOAD_ATTR, n); |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2216 | com_node(c, augn); |
| 2217 | com_addbyte(c, opcode); |
| 2218 | com_pop(c, 1); |
| 2219 | com_addbyte(c, ROT_TWO); |
| 2220 | com_addopname(c, STORE_ATTR, n); |
| 2221 | com_pop(c, 2); |
| 2222 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2223 | |
| 2224 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2225 | com_assign_attr(struct compiling *c, node *n, int assigning) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2226 | { |
| 2227 | com_addopname(c, assigning ? STORE_ATTR : DELETE_ATTR, n); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2228 | com_pop(c, assigning ? 2 : 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2229 | } |
| 2230 | |
| 2231 | static void |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2232 | 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] | 2233 | { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2234 | REQ(n, trailer); |
| 2235 | switch (TYPE(CHILD(n, 0))) { |
| 2236 | case LPAR: /* '(' [exprlist] ')' */ |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2237 | com_error(c, PyExc_SyntaxError, |
| 2238 | "can't assign to function call"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2239 | break; |
| 2240 | case DOT: /* '.' NAME */ |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2241 | if (assigning > OP_APPLY) |
| 2242 | com_augassign_attr(c, CHILD(n, 1), assigning, augn); |
| 2243 | else |
| 2244 | com_assign_attr(c, CHILD(n, 1), assigning); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2245 | break; |
Guido van Rossum | 8861b74 | 1996-07-30 16:49:37 +0000 | [diff] [blame] | 2246 | case LSQB: /* '[' subscriptlist ']' */ |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2247 | com_subscriptlist(c, CHILD(n, 1), assigning, augn); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2248 | break; |
| 2249 | default: |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2250 | com_error(c, PyExc_SystemError, "unknown trailer type"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2251 | } |
| 2252 | } |
| 2253 | |
| 2254 | static void |
Thomas Wouters | 0be5aab | 2000-08-11 22:15:52 +0000 | [diff] [blame] | 2255 | com_assign_sequence(struct compiling *c, node *n, int assigning) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2256 | { |
| 2257 | int i; |
Thomas Wouters | b59290f | 2000-08-25 05:41:11 +0000 | [diff] [blame] | 2258 | if (TYPE(n) != testlist && TYPE(n) != listmaker) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2259 | REQ(n, exprlist); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2260 | if (assigning) { |
| 2261 | i = (NCH(n)+1)/2; |
Thomas Wouters | 0be5aab | 2000-08-11 22:15:52 +0000 | [diff] [blame] | 2262 | com_addoparg(c, UNPACK_SEQUENCE, i); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2263 | com_push(c, i-1); |
| 2264 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2265 | for (i = 0; i < NCH(n); i += 2) |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2266 | com_assign(c, CHILD(n, i), assigning, NULL); |
| 2267 | } |
| 2268 | |
| 2269 | static void |
| 2270 | com_augassign_name(struct compiling *c, node *n, int opcode, node *augn) |
| 2271 | { |
| 2272 | REQ(n, NAME); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 2273 | com_addop_varname(c, VAR_LOAD, STR(n)); |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2274 | com_push(c, 1); |
| 2275 | com_node(c, augn); |
| 2276 | com_addbyte(c, opcode); |
| 2277 | com_pop(c, 1); |
| 2278 | com_assign_name(c, n, OP_ASSIGN); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2279 | } |
| 2280 | |
| 2281 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2282 | com_assign_name(struct compiling *c, node *n, int assigning) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2283 | { |
| 2284 | REQ(n, NAME); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 2285 | com_addop_varname(c, assigning ? VAR_STORE : VAR_DELETE, STR(n)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2286 | if (assigning) |
| 2287 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2288 | } |
| 2289 | |
| 2290 | static void |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2291 | com_assign(struct compiling *c, node *n, int assigning, node *augn) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2292 | { |
| 2293 | /* Loop to avoid trivial recursion */ |
| 2294 | for (;;) { |
| 2295 | switch (TYPE(n)) { |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 2296 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2297 | case exprlist: |
| 2298 | case testlist: |
| 2299 | if (NCH(n) > 1) { |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2300 | if (assigning > OP_APPLY) { |
| 2301 | com_error(c, PyExc_SyntaxError, |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 2302 | "augmented assign to tuple not possible"); |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2303 | return; |
| 2304 | } |
Thomas Wouters | 0be5aab | 2000-08-11 22:15:52 +0000 | [diff] [blame] | 2305 | com_assign_sequence(c, n, assigning); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2306 | return; |
| 2307 | } |
| 2308 | n = CHILD(n, 0); |
| 2309 | break; |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 2310 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2311 | case test: |
| 2312 | case and_test: |
| 2313 | case not_test: |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2314 | case comparison: |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2315 | case expr: |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 2316 | case xor_expr: |
| 2317 | case and_expr: |
| 2318 | case shift_expr: |
| 2319 | case arith_expr: |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2320 | case term: |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 2321 | case factor: |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2322 | if (NCH(n) > 1) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2323 | com_error(c, PyExc_SyntaxError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 2324 | "can't assign to operator"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2325 | return; |
| 2326 | } |
| 2327 | n = CHILD(n, 0); |
| 2328 | break; |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 2329 | |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 2330 | case power: /* atom trailer* ('**' power)* |
| 2331 | ('+'|'-'|'~') factor | atom trailer* */ |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 2332 | if (TYPE(CHILD(n, 0)) != atom) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2333 | com_error(c, PyExc_SyntaxError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 2334 | "can't assign to operator"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2335 | return; |
| 2336 | } |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 2337 | if (NCH(n) > 1) { /* trailer or exponent present */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2338 | int i; |
| 2339 | com_node(c, CHILD(n, 0)); |
| 2340 | for (i = 1; i+1 < NCH(n); i++) { |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 2341 | if (TYPE(CHILD(n, i)) == DOUBLESTAR) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2342 | com_error(c, PyExc_SyntaxError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 2343 | "can't assign to operator"); |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 2344 | return; |
| 2345 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2346 | com_apply_trailer(c, CHILD(n, i)); |
| 2347 | } /* NB i is still alive */ |
| 2348 | com_assign_trailer(c, |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2349 | CHILD(n, i), assigning, augn); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2350 | return; |
| 2351 | } |
| 2352 | n = CHILD(n, 0); |
| 2353 | break; |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 2354 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2355 | case atom: |
| 2356 | switch (TYPE(CHILD(n, 0))) { |
| 2357 | case LPAR: |
| 2358 | n = CHILD(n, 1); |
| 2359 | if (TYPE(n) == RPAR) { |
| 2360 | /* XXX Should allow () = () ??? */ |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2361 | com_error(c, PyExc_SyntaxError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 2362 | "can't assign to ()"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2363 | return; |
| 2364 | } |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2365 | if (assigning > OP_APPLY) { |
| 2366 | com_error(c, PyExc_SyntaxError, |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 2367 | "augmented assign to tuple not possible"); |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2368 | return; |
| 2369 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2370 | break; |
| 2371 | case LSQB: |
| 2372 | n = CHILD(n, 1); |
| 2373 | if (TYPE(n) == RSQB) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2374 | com_error(c, PyExc_SyntaxError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 2375 | "can't assign to []"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2376 | return; |
| 2377 | } |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2378 | if (assigning > OP_APPLY) { |
| 2379 | com_error(c, PyExc_SyntaxError, |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 2380 | "augmented assign to list not possible"); |
| 2381 | return; |
| 2382 | } |
| 2383 | if (NCH(n) > 1 |
| 2384 | && TYPE(CHILD(n, 1)) == list_for) { |
| 2385 | com_error(c, PyExc_SyntaxError, |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 2386 | "can't assign to list comprehension"); |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2387 | return; |
| 2388 | } |
Thomas Wouters | 0be5aab | 2000-08-11 22:15:52 +0000 | [diff] [blame] | 2389 | com_assign_sequence(c, n, assigning); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2390 | return; |
| 2391 | case NAME: |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2392 | if (assigning > OP_APPLY) |
| 2393 | com_augassign_name(c, CHILD(n, 0), |
| 2394 | assigning, augn); |
| 2395 | else |
| 2396 | com_assign_name(c, CHILD(n, 0), |
| 2397 | assigning); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2398 | return; |
| 2399 | default: |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2400 | com_error(c, PyExc_SyntaxError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 2401 | "can't assign to literal"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2402 | return; |
| 2403 | } |
| 2404 | break; |
Guido van Rossum | 15cc9a0 | 1996-08-08 18:51:04 +0000 | [diff] [blame] | 2405 | |
| 2406 | case lambdef: |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2407 | com_error(c, PyExc_SyntaxError, |
| 2408 | "can't assign to lambda"); |
Guido van Rossum | 15cc9a0 | 1996-08-08 18:51:04 +0000 | [diff] [blame] | 2409 | return; |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 2410 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2411 | default: |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2412 | com_error(c, PyExc_SystemError, |
| 2413 | "com_assign: bad node"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2414 | return; |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 2415 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2416 | } |
| 2417 | } |
| 2418 | } |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 2419 | |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2420 | static void |
| 2421 | com_augassign(struct compiling *c, node *n) |
| 2422 | { |
| 2423 | int opcode; |
| 2424 | |
| 2425 | switch (STR(CHILD(CHILD(n, 1), 0))[0]) { |
| 2426 | case '+': opcode = INPLACE_ADD; break; |
| 2427 | case '-': opcode = INPLACE_SUBTRACT; break; |
| 2428 | case '/': opcode = INPLACE_DIVIDE; break; |
| 2429 | case '%': opcode = INPLACE_MODULO; break; |
| 2430 | case '<': opcode = INPLACE_LSHIFT; break; |
| 2431 | case '>': opcode = INPLACE_RSHIFT; break; |
| 2432 | case '&': opcode = INPLACE_AND; break; |
| 2433 | case '^': opcode = INPLACE_XOR; break; |
| 2434 | case '|': opcode = INPLACE_OR; break; |
| 2435 | case '*': |
| 2436 | if (STR(CHILD(CHILD(n, 1), 0))[1] == '*') |
| 2437 | opcode = INPLACE_POWER; |
| 2438 | else |
| 2439 | opcode = INPLACE_MULTIPLY; |
| 2440 | break; |
| 2441 | default: |
| 2442 | com_error(c, PyExc_SystemError, "com_augassign: bad operator"); |
| 2443 | return; |
| 2444 | } |
| 2445 | com_assign(c, CHILD(n, 0), opcode, CHILD(n, 2)); |
| 2446 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2447 | |
| 2448 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2449 | com_expr_stmt(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2450 | { |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2451 | REQ(n, expr_stmt); |
| 2452 | /* testlist (('=' testlist)* | augassign testlist) */ |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2453 | /* Forget it if we have just a doc string here */ |
Guido van Rossum | 5f5e817 | 1997-04-06 03:41:40 +0000 | [diff] [blame] | 2454 | if (!c->c_interactive && NCH(n) == 1 && get_rawdocstring(n) != NULL) |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2455 | return; |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2456 | if (NCH(n) == 1) { |
| 2457 | com_node(c, CHILD(n, NCH(n)-1)); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 2458 | if (c->c_interactive) |
| 2459 | com_addbyte(c, PRINT_EXPR); |
| 2460 | else |
| 2461 | com_addbyte(c, POP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2462 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2463 | } |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2464 | else if (TYPE(CHILD(n,1)) == augassign) |
| 2465 | com_augassign(c, n); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2466 | else { |
| 2467 | int i; |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2468 | com_node(c, CHILD(n, NCH(n)-1)); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 2469 | for (i = 0; i < NCH(n)-2; i+=2) { |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2470 | if (i+2 < NCH(n)-2) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2471 | com_addbyte(c, DUP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2472 | com_push(c, 1); |
| 2473 | } |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2474 | com_assign(c, CHILD(n, i), OP_ASSIGN, NULL); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2475 | } |
| 2476 | } |
| 2477 | } |
| 2478 | |
| 2479 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2480 | com_assert_stmt(struct compiling *c, node *n) |
Guido van Rossum | 228d7f3 | 1997-04-02 05:24:36 +0000 | [diff] [blame] | 2481 | { |
| 2482 | int a = 0, b = 0; |
| 2483 | int i; |
| 2484 | REQ(n, assert_stmt); /* 'assert' test [',' test] */ |
| 2485 | /* Generate code like for |
| 2486 | |
| 2487 | if __debug__: |
| 2488 | if not <test>: |
| 2489 | raise AssertionError [, <message>] |
| 2490 | |
| 2491 | where <message> is the second test, if present. |
| 2492 | */ |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 2493 | |
Guido van Rossum | 228d7f3 | 1997-04-02 05:24:36 +0000 | [diff] [blame] | 2494 | if (Py_OptimizeFlag) |
| 2495 | return; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 2496 | com_addop_name(c, LOAD_GLOBAL, "__debug__"); |
Guido van Rossum | 228d7f3 | 1997-04-02 05:24:36 +0000 | [diff] [blame] | 2497 | com_push(c, 1); |
| 2498 | com_addfwref(c, JUMP_IF_FALSE, &a); |
| 2499 | com_addbyte(c, POP_TOP); |
| 2500 | com_pop(c, 1); |
| 2501 | com_node(c, CHILD(n, 1)); |
| 2502 | com_addfwref(c, JUMP_IF_TRUE, &b); |
| 2503 | com_addbyte(c, POP_TOP); |
| 2504 | com_pop(c, 1); |
| 2505 | /* Raise that exception! */ |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 2506 | com_addop_name(c, LOAD_GLOBAL, "AssertionError"); |
Guido van Rossum | 228d7f3 | 1997-04-02 05:24:36 +0000 | [diff] [blame] | 2507 | com_push(c, 1); |
| 2508 | i = NCH(n)/2; /* Either 2 or 4 */ |
| 2509 | if (i > 1) |
| 2510 | com_node(c, CHILD(n, 3)); |
| 2511 | com_addoparg(c, RAISE_VARARGS, i); |
| 2512 | com_pop(c, i); |
| 2513 | /* The interpreter does not fall through */ |
| 2514 | /* All jumps converge here */ |
| 2515 | com_backpatch(c, a); |
| 2516 | com_backpatch(c, b); |
| 2517 | com_addbyte(c, POP_TOP); |
| 2518 | } |
| 2519 | |
| 2520 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2521 | com_print_stmt(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2522 | { |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 2523 | int i = 1; |
| 2524 | node* stream = NULL; |
| 2525 | |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 2526 | REQ(n, print_stmt); /* 'print' (test ',')* [test] */ |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 2527 | |
| 2528 | /* are we using the extended print form? */ |
| 2529 | if (NCH(n) >= 2 && TYPE(CHILD(n, 1)) == RIGHTSHIFT) { |
| 2530 | stream = CHILD(n, 2); |
Barry Warsaw | 24703a0 | 2000-08-21 17:07:20 +0000 | [diff] [blame] | 2531 | com_node(c, stream); |
| 2532 | /* stack: [...] => [... stream] */ |
| 2533 | com_push(c, 1); |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 2534 | if (NCH(n) > 3 && TYPE(CHILD(n, 3)) == COMMA) |
| 2535 | i = 4; |
| 2536 | else |
| 2537 | i = 3; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2538 | } |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 2539 | for (; i < NCH(n); i += 2) { |
| 2540 | if (stream != NULL) { |
Barry Warsaw | 24703a0 | 2000-08-21 17:07:20 +0000 | [diff] [blame] | 2541 | com_addbyte(c, DUP_TOP); |
| 2542 | /* stack: [stream] => [stream stream] */ |
| 2543 | com_push(c, 1); |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 2544 | com_node(c, CHILD(n, i)); |
Barry Warsaw | 24703a0 | 2000-08-21 17:07:20 +0000 | [diff] [blame] | 2545 | /* stack: [stream stream] => [stream stream obj] */ |
| 2546 | com_addbyte(c, ROT_TWO); |
| 2547 | /* stack: [stream stream obj] => [stream obj stream] */ |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 2548 | com_addbyte(c, PRINT_ITEM_TO); |
Barry Warsaw | 24703a0 | 2000-08-21 17:07:20 +0000 | [diff] [blame] | 2549 | /* stack: [stream obj stream] => [stream] */ |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 2550 | com_pop(c, 2); |
| 2551 | } |
| 2552 | else { |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 2553 | com_node(c, CHILD(n, i)); |
Barry Warsaw | 24703a0 | 2000-08-21 17:07:20 +0000 | [diff] [blame] | 2554 | /* stack: [...] => [... obj] */ |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 2555 | com_addbyte(c, PRINT_ITEM); |
| 2556 | com_pop(c, 1); |
| 2557 | } |
| 2558 | } |
| 2559 | /* XXX Alternatively, LOAD_CONST '\n' and then PRINT_ITEM */ |
Barry Warsaw | 24703a0 | 2000-08-21 17:07:20 +0000 | [diff] [blame] | 2560 | if (TYPE(CHILD(n, NCH(n)-1)) == COMMA) { |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 2561 | if (stream != NULL) { |
Barry Warsaw | 24703a0 | 2000-08-21 17:07:20 +0000 | [diff] [blame] | 2562 | /* must pop the extra stream object off the stack */ |
| 2563 | com_addbyte(c, POP_TOP); |
| 2564 | /* stack: [... stream] => [...] */ |
| 2565 | com_pop(c, 1); |
| 2566 | } |
| 2567 | } |
| 2568 | else { |
| 2569 | if (stream != NULL) { |
| 2570 | /* this consumes the last stream object on stack */ |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 2571 | com_addbyte(c, PRINT_NEWLINE_TO); |
Barry Warsaw | 24703a0 | 2000-08-21 17:07:20 +0000 | [diff] [blame] | 2572 | /* stack: [... stream] => [...] */ |
Barry Warsaw | 29c574e | 2000-08-21 15:38:56 +0000 | [diff] [blame] | 2573 | com_pop(c, 1); |
| 2574 | } |
| 2575 | else |
| 2576 | com_addbyte(c, PRINT_NEWLINE); |
| 2577 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2578 | } |
| 2579 | |
| 2580 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2581 | com_return_stmt(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2582 | { |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 2583 | REQ(n, return_stmt); /* 'return' [testlist] */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2584 | if (!c->c_infunction) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2585 | com_error(c, PyExc_SyntaxError, "'return' outside function"); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2586 | } |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2587 | if (NCH(n) < 2) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2588 | com_addoparg(c, LOAD_CONST, com_addconst(c, Py_None)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2589 | com_push(c, 1); |
| 2590 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2591 | else |
| 2592 | com_node(c, CHILD(n, 1)); |
| 2593 | com_addbyte(c, RETURN_VALUE); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2594 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2595 | } |
| 2596 | |
| 2597 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2598 | com_raise_stmt(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2599 | { |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2600 | int i; |
Guido van Rossum | d295f12 | 1998-04-09 21:39:57 +0000 | [diff] [blame] | 2601 | REQ(n, raise_stmt); /* 'raise' [test [',' test [',' test]]] */ |
| 2602 | if (NCH(n) > 1) { |
| 2603 | com_node(c, CHILD(n, 1)); |
| 2604 | if (NCH(n) > 3) { |
| 2605 | com_node(c, CHILD(n, 3)); |
| 2606 | if (NCH(n) > 5) |
| 2607 | com_node(c, CHILD(n, 5)); |
| 2608 | } |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 2609 | } |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2610 | i = NCH(n)/2; |
| 2611 | com_addoparg(c, RAISE_VARARGS, i); |
| 2612 | com_pop(c, i); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2613 | } |
| 2614 | |
| 2615 | static void |
Thomas Wouters | 5215225 | 2000-08-17 22:55:00 +0000 | [diff] [blame] | 2616 | com_from_import(struct compiling *c, node *n) |
| 2617 | { |
| 2618 | com_addopname(c, IMPORT_FROM, CHILD(n, 0)); |
| 2619 | com_push(c, 1); |
| 2620 | if (NCH(n) > 1) { |
| 2621 | if (strcmp(STR(CHILD(n, 1)), "as") != 0) { |
| 2622 | com_error(c, PyExc_SyntaxError, "invalid syntax"); |
| 2623 | return; |
| 2624 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 2625 | com_addop_varname(c, VAR_STORE, STR(CHILD(n, 2))); |
Thomas Wouters | 5215225 | 2000-08-17 22:55:00 +0000 | [diff] [blame] | 2626 | } else |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 2627 | com_addop_varname(c, VAR_STORE, STR(CHILD(n, 0))); |
Thomas Wouters | 5215225 | 2000-08-17 22:55:00 +0000 | [diff] [blame] | 2628 | com_pop(c, 1); |
| 2629 | } |
| 2630 | |
| 2631 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2632 | com_import_stmt(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2633 | { |
| 2634 | int i; |
| 2635 | REQ(n, import_stmt); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 2636 | /* 'import' dotted_name (',' dotted_name)* | |
| 2637 | 'from' dotted_name 'import' ('*' | NAME (',' NAME)*) */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2638 | if (STR(CHILD(n, 0))[0] == 'f') { |
Guido van Rossum | 83fb073 | 2000-11-27 22:22:36 +0000 | [diff] [blame] | 2639 | PyObject *tup; |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 2640 | /* 'from' dotted_name 'import' ... */ |
| 2641 | REQ(CHILD(n, 1), dotted_name); |
Thomas Wouters | dd13e4f | 2000-08-27 20:31:27 +0000 | [diff] [blame] | 2642 | |
| 2643 | if (TYPE(CHILD(n, 3)) == STAR) { |
| 2644 | tup = Py_BuildValue("(s)", "*"); |
| 2645 | } else { |
| 2646 | tup = PyTuple_New((NCH(n) - 2)/2); |
| 2647 | for (i = 3; i < NCH(n); i += 2) { |
| 2648 | PyTuple_SET_ITEM(tup, (i-3)/2, |
| 2649 | PyString_FromString(STR( |
| 2650 | CHILD(CHILD(n, i), 0)))); |
| 2651 | } |
| 2652 | } |
| 2653 | com_addoparg(c, LOAD_CONST, com_addconst(c, tup)); |
Guido van Rossum | 83fb073 | 2000-11-27 22:22:36 +0000 | [diff] [blame] | 2654 | Py_DECREF(tup); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2655 | com_push(c, 1); |
Thomas Wouters | dd13e4f | 2000-08-27 20:31:27 +0000 | [diff] [blame] | 2656 | com_addopname(c, IMPORT_NAME, CHILD(n, 1)); |
Thomas Wouters | 5215225 | 2000-08-17 22:55:00 +0000 | [diff] [blame] | 2657 | if (TYPE(CHILD(n, 3)) == STAR) |
| 2658 | com_addbyte(c, IMPORT_STAR); |
| 2659 | else { |
| 2660 | for (i = 3; i < NCH(n); i += 2) |
| 2661 | com_from_import(c, CHILD(n, i)); |
| 2662 | com_addbyte(c, POP_TOP); |
| 2663 | } |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2664 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2665 | } |
| 2666 | else { |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 2667 | /* 'import' ... */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2668 | for (i = 1; i < NCH(n); i += 2) { |
Thomas Wouters | 5215225 | 2000-08-17 22:55:00 +0000 | [diff] [blame] | 2669 | node *subn = CHILD(n, i); |
| 2670 | REQ(subn, dotted_as_name); |
Thomas Wouters | dd13e4f | 2000-08-27 20:31:27 +0000 | [diff] [blame] | 2671 | com_addoparg(c, LOAD_CONST, com_addconst(c, Py_None)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2672 | com_push(c, 1); |
Thomas Wouters | dd13e4f | 2000-08-27 20:31:27 +0000 | [diff] [blame] | 2673 | com_addopname(c, IMPORT_NAME, CHILD(subn, 0)); |
Thomas Wouters | 5215225 | 2000-08-17 22:55:00 +0000 | [diff] [blame] | 2674 | if (NCH(subn) > 1) { |
Thomas Wouters | e753ef8 | 2000-08-27 20:16:32 +0000 | [diff] [blame] | 2675 | int j; |
| 2676 | if (strcmp(STR(CHILD(subn, 1)), "as") != 0) { |
Thomas Wouters | 5215225 | 2000-08-17 22:55:00 +0000 | [diff] [blame] | 2677 | com_error(c, PyExc_SyntaxError, |
| 2678 | "invalid syntax"); |
| 2679 | return; |
| 2680 | } |
Thomas Wouters | e753ef8 | 2000-08-27 20:16:32 +0000 | [diff] [blame] | 2681 | for (j=2 ; j < NCH(CHILD(subn, 0)); j += 2) |
| 2682 | com_addopname(c, LOAD_ATTR, |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 2683 | CHILD(CHILD(subn, 0), |
| 2684 | j)); |
| 2685 | com_addop_varname(c, VAR_STORE, |
| 2686 | STR(CHILD(subn, 2))); |
Thomas Wouters | 5215225 | 2000-08-17 22:55:00 +0000 | [diff] [blame] | 2687 | } else |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 2688 | com_addop_varname(c, VAR_STORE, |
| 2689 | STR(CHILD(CHILD(subn, 0), |
| 2690 | 0))); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2691 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2692 | } |
| 2693 | } |
| 2694 | } |
| 2695 | |
| 2696 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2697 | com_exec_stmt(struct compiling *c, node *n) |
Guido van Rossum | db3165e | 1993-10-18 17:06:59 +0000 | [diff] [blame] | 2698 | { |
| 2699 | REQ(n, exec_stmt); |
| 2700 | /* exec_stmt: 'exec' expr ['in' expr [',' expr]] */ |
| 2701 | com_node(c, CHILD(n, 1)); |
| 2702 | if (NCH(n) >= 4) |
| 2703 | com_node(c, CHILD(n, 3)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2704 | else { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2705 | com_addoparg(c, LOAD_CONST, com_addconst(c, Py_None)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2706 | com_push(c, 1); |
| 2707 | } |
Guido van Rossum | db3165e | 1993-10-18 17:06:59 +0000 | [diff] [blame] | 2708 | if (NCH(n) >= 6) |
| 2709 | com_node(c, CHILD(n, 5)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2710 | else { |
Guido van Rossum | db3165e | 1993-10-18 17:06:59 +0000 | [diff] [blame] | 2711 | com_addbyte(c, DUP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2712 | com_push(c, 1); |
| 2713 | } |
Guido van Rossum | db3165e | 1993-10-18 17:06:59 +0000 | [diff] [blame] | 2714 | com_addbyte(c, EXEC_STMT); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2715 | com_pop(c, 3); |
Guido van Rossum | db3165e | 1993-10-18 17:06:59 +0000 | [diff] [blame] | 2716 | } |
| 2717 | |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 2718 | static int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2719 | is_constant_false(struct compiling *c, node *n) |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 2720 | { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2721 | PyObject *v; |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 2722 | int i; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 2723 | /* argument c will be NULL when called from symtable_node() */ |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 2724 | |
| 2725 | /* Label to avoid tail recursion */ |
| 2726 | next: |
| 2727 | switch (TYPE(n)) { |
| 2728 | |
| 2729 | case suite: |
| 2730 | if (NCH(n) == 1) { |
| 2731 | n = CHILD(n, 0); |
| 2732 | goto next; |
| 2733 | } |
| 2734 | /* Fall through */ |
| 2735 | case file_input: |
| 2736 | for (i = 0; i < NCH(n); i++) { |
| 2737 | node *ch = CHILD(n, i); |
| 2738 | if (TYPE(ch) == stmt) { |
| 2739 | n = ch; |
| 2740 | goto next; |
| 2741 | } |
| 2742 | } |
| 2743 | break; |
| 2744 | |
| 2745 | case stmt: |
| 2746 | case simple_stmt: |
| 2747 | case small_stmt: |
| 2748 | n = CHILD(n, 0); |
| 2749 | goto next; |
| 2750 | |
| 2751 | case expr_stmt: |
| 2752 | case testlist: |
| 2753 | case test: |
| 2754 | case and_test: |
| 2755 | case not_test: |
| 2756 | case comparison: |
| 2757 | case expr: |
| 2758 | case xor_expr: |
| 2759 | case and_expr: |
| 2760 | case shift_expr: |
| 2761 | case arith_expr: |
| 2762 | case term: |
| 2763 | case factor: |
| 2764 | case power: |
| 2765 | case atom: |
| 2766 | if (NCH(n) == 1) { |
| 2767 | n = CHILD(n, 0); |
| 2768 | goto next; |
| 2769 | } |
| 2770 | break; |
| 2771 | |
| 2772 | case NAME: |
| 2773 | if (Py_OptimizeFlag && strcmp(STR(n), "__debug__") == 0) |
| 2774 | return 1; |
| 2775 | break; |
| 2776 | |
| 2777 | case NUMBER: |
| 2778 | v = parsenumber(c, STR(n)); |
| 2779 | if (v == NULL) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2780 | PyErr_Clear(); |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 2781 | break; |
| 2782 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2783 | i = PyObject_IsTrue(v); |
| 2784 | Py_DECREF(v); |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 2785 | return i == 0; |
| 2786 | |
| 2787 | case STRING: |
Guido van Rossum | 6af0c00 | 1997-03-11 21:25:55 +0000 | [diff] [blame] | 2788 | v = parsestr(STR(n)); |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 2789 | if (v == NULL) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2790 | PyErr_Clear(); |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 2791 | break; |
| 2792 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2793 | i = PyObject_IsTrue(v); |
| 2794 | Py_DECREF(v); |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 2795 | return i == 0; |
| 2796 | |
| 2797 | } |
| 2798 | return 0; |
| 2799 | } |
| 2800 | |
Guido van Rossum | db3165e | 1993-10-18 17:06:59 +0000 | [diff] [blame] | 2801 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2802 | com_if_stmt(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2803 | { |
| 2804 | int i; |
| 2805 | int anchor = 0; |
| 2806 | REQ(n, if_stmt); |
| 2807 | /*'if' test ':' suite ('elif' test ':' suite)* ['else' ':' suite] */ |
| 2808 | for (i = 0; i+3 < NCH(n); i+=4) { |
| 2809 | int a = 0; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2810 | node *ch = CHILD(n, i+1); |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 2811 | if (is_constant_false(c, ch)) |
| 2812 | continue; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2813 | if (i > 0) |
| 2814 | com_addoparg(c, SET_LINENO, ch->n_lineno); |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 2815 | com_node(c, ch); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2816 | com_addfwref(c, JUMP_IF_FALSE, &a); |
| 2817 | com_addbyte(c, POP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2818 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2819 | com_node(c, CHILD(n, i+3)); |
| 2820 | com_addfwref(c, JUMP_FORWARD, &anchor); |
| 2821 | com_backpatch(c, a); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2822 | /* We jump here with an extra entry which we now pop */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2823 | com_addbyte(c, POP_TOP); |
| 2824 | } |
| 2825 | if (i+2 < NCH(n)) |
| 2826 | com_node(c, CHILD(n, i+2)); |
Guido van Rossum | 7c53111 | 1997-03-11 18:42:21 +0000 | [diff] [blame] | 2827 | if (anchor) |
| 2828 | com_backpatch(c, anchor); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2829 | } |
| 2830 | |
| 2831 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2832 | com_while_stmt(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2833 | { |
| 2834 | int break_anchor = 0; |
| 2835 | int anchor = 0; |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 2836 | int save_begin = c->c_begin; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2837 | REQ(n, while_stmt); /* 'while' test ':' suite ['else' ':' suite] */ |
| 2838 | com_addfwref(c, SETUP_LOOP, &break_anchor); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 2839 | block_push(c, SETUP_LOOP); |
| 2840 | c->c_begin = c->c_nexti; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2841 | com_addoparg(c, SET_LINENO, n->n_lineno); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2842 | com_node(c, CHILD(n, 1)); |
| 2843 | com_addfwref(c, JUMP_IF_FALSE, &anchor); |
| 2844 | com_addbyte(c, POP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2845 | com_pop(c, 1); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2846 | c->c_loops++; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2847 | com_node(c, CHILD(n, 3)); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2848 | c->c_loops--; |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 2849 | com_addoparg(c, JUMP_ABSOLUTE, c->c_begin); |
| 2850 | c->c_begin = save_begin; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2851 | com_backpatch(c, anchor); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2852 | /* We jump here with one entry more on the stack */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2853 | com_addbyte(c, POP_TOP); |
| 2854 | com_addbyte(c, POP_BLOCK); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 2855 | block_pop(c, SETUP_LOOP); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2856 | if (NCH(n) > 4) |
| 2857 | com_node(c, CHILD(n, 6)); |
| 2858 | com_backpatch(c, break_anchor); |
| 2859 | } |
| 2860 | |
| 2861 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2862 | com_for_stmt(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2863 | { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2864 | PyObject *v; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2865 | int break_anchor = 0; |
| 2866 | int anchor = 0; |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 2867 | int save_begin = c->c_begin; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2868 | REQ(n, for_stmt); |
| 2869 | /* 'for' exprlist 'in' exprlist ':' suite ['else' ':' suite] */ |
| 2870 | com_addfwref(c, SETUP_LOOP, &break_anchor); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 2871 | block_push(c, SETUP_LOOP); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2872 | com_node(c, CHILD(n, 3)); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2873 | v = PyInt_FromLong(0L); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2874 | if (v == NULL) |
| 2875 | c->c_errors++; |
| 2876 | com_addoparg(c, LOAD_CONST, com_addconst(c, v)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2877 | com_push(c, 1); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2878 | Py_XDECREF(v); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 2879 | c->c_begin = c->c_nexti; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2880 | com_addoparg(c, SET_LINENO, n->n_lineno); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2881 | com_addfwref(c, FOR_LOOP, &anchor); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2882 | com_push(c, 1); |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 2883 | com_assign(c, CHILD(n, 1), OP_ASSIGN, NULL); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2884 | c->c_loops++; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2885 | com_node(c, CHILD(n, 5)); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2886 | c->c_loops--; |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 2887 | com_addoparg(c, JUMP_ABSOLUTE, c->c_begin); |
| 2888 | c->c_begin = save_begin; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2889 | com_backpatch(c, anchor); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2890 | com_pop(c, 2); /* FOR_LOOP has popped these */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2891 | com_addbyte(c, POP_BLOCK); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 2892 | block_pop(c, SETUP_LOOP); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2893 | if (NCH(n) > 8) |
| 2894 | com_node(c, CHILD(n, 8)); |
| 2895 | com_backpatch(c, break_anchor); |
| 2896 | } |
| 2897 | |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 2898 | /* Code generated for "try: S finally: Sf" is as follows: |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 2899 | |
| 2900 | SETUP_FINALLY L |
| 2901 | <code for S> |
| 2902 | POP_BLOCK |
| 2903 | LOAD_CONST <nil> |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 2904 | L: <code for Sf> |
| 2905 | END_FINALLY |
| 2906 | |
| 2907 | The special instructions use the block stack. Each block |
| 2908 | stack entry contains the instruction that created it (here |
| 2909 | SETUP_FINALLY), the level of the value stack at the time the |
| 2910 | block stack entry was created, and a label (here L). |
| 2911 | |
| 2912 | SETUP_FINALLY: |
| 2913 | Pushes the current value stack level and the label |
| 2914 | onto the block stack. |
| 2915 | POP_BLOCK: |
| 2916 | Pops en entry from the block stack, and pops the value |
| 2917 | stack until its level is the same as indicated on the |
| 2918 | block stack. (The label is ignored.) |
| 2919 | END_FINALLY: |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2920 | Pops a variable number of entries from the *value* stack |
| 2921 | and re-raises the exception they specify. The number of |
| 2922 | entries popped depends on the (pseudo) exception type. |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 2923 | |
| 2924 | The block stack is unwound when an exception is raised: |
| 2925 | when a SETUP_FINALLY entry is found, the exception is pushed |
| 2926 | onto the value stack (and the exception condition is cleared), |
| 2927 | and the interpreter jumps to the label gotten from the block |
| 2928 | stack. |
| 2929 | |
| 2930 | 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] | 2931 | (The contents of the value stack is shown in [], with the top |
| 2932 | at the right; 'tb' is trace-back info, 'val' the exception's |
| 2933 | associated value, and 'exc' the exception.) |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 2934 | |
| 2935 | Value stack Label Instruction Argument |
| 2936 | [] SETUP_EXCEPT L1 |
| 2937 | [] <code for S> |
| 2938 | [] POP_BLOCK |
| 2939 | [] JUMP_FORWARD L0 |
| 2940 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2941 | [tb, val, exc] L1: DUP ) |
| 2942 | [tb, val, exc, exc] <evaluate E1> ) |
| 2943 | [tb, val, exc, exc, E1] COMPARE_OP EXC_MATCH ) only if E1 |
| 2944 | [tb, val, exc, 1-or-0] JUMP_IF_FALSE L2 ) |
| 2945 | [tb, val, exc, 1] POP ) |
| 2946 | [tb, val, exc] POP |
| 2947 | [tb, val] <assign to V1> (or POP if no V1) |
| 2948 | [tb] POP |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 2949 | [] <code for S1> |
| 2950 | JUMP_FORWARD L0 |
| 2951 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2952 | [tb, val, exc, 0] L2: POP |
| 2953 | [tb, val, exc] DUP |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 2954 | .............................etc....................... |
| 2955 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2956 | [tb, val, exc, 0] Ln+1: POP |
| 2957 | [tb, val, exc] END_FINALLY # re-raise exception |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 2958 | |
| 2959 | [] L0: <next statement> |
| 2960 | |
| 2961 | Of course, parts are not generated if Vi or Ei is not present. |
| 2962 | */ |
| 2963 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 2964 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 2965 | com_try_except(struct compiling *c, node *n) |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 2966 | { |
| 2967 | int except_anchor = 0; |
| 2968 | int end_anchor = 0; |
| 2969 | int else_anchor = 0; |
| 2970 | int i; |
| 2971 | node *ch; |
| 2972 | |
| 2973 | com_addfwref(c, SETUP_EXCEPT, &except_anchor); |
| 2974 | block_push(c, SETUP_EXCEPT); |
| 2975 | com_node(c, CHILD(n, 2)); |
| 2976 | com_addbyte(c, POP_BLOCK); |
| 2977 | block_pop(c, SETUP_EXCEPT); |
| 2978 | com_addfwref(c, JUMP_FORWARD, &else_anchor); |
| 2979 | com_backpatch(c, except_anchor); |
| 2980 | for (i = 3; |
| 2981 | i < NCH(n) && TYPE(ch = CHILD(n, i)) == except_clause; |
| 2982 | i += 3) { |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2983 | /* except_clause: 'except' [expr [',' var]] */ |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 2984 | if (except_anchor == 0) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 2985 | com_error(c, PyExc_SyntaxError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 2986 | "default 'except:' must be last"); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 2987 | break; |
| 2988 | } |
| 2989 | except_anchor = 0; |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2990 | com_push(c, 3); /* tb, val, exc pushed by exception */ |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 2991 | com_addoparg(c, SET_LINENO, ch->n_lineno); |
| 2992 | if (NCH(ch) > 1) { |
| 2993 | com_addbyte(c, DUP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2994 | com_push(c, 1); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 2995 | com_node(c, CHILD(ch, 1)); |
| 2996 | com_addoparg(c, COMPARE_OP, EXC_MATCH); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 2997 | com_pop(c, 1); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 2998 | com_addfwref(c, JUMP_IF_FALSE, &except_anchor); |
| 2999 | com_addbyte(c, POP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3000 | com_pop(c, 1); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3001 | } |
| 3002 | com_addbyte(c, POP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3003 | com_pop(c, 1); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3004 | if (NCH(ch) > 3) |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3005 | com_assign(c, CHILD(ch, 3), OP_ASSIGN, NULL); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3006 | else { |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3007 | com_addbyte(c, POP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3008 | com_pop(c, 1); |
| 3009 | } |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3010 | com_addbyte(c, POP_TOP); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3011 | com_pop(c, 1); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3012 | com_node(c, CHILD(n, i+2)); |
| 3013 | com_addfwref(c, JUMP_FORWARD, &end_anchor); |
| 3014 | if (except_anchor) { |
| 3015 | com_backpatch(c, except_anchor); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3016 | /* We come in with [tb, val, exc, 0] on the |
| 3017 | stack; one pop and it's the same as |
| 3018 | expected at the start of the loop */ |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3019 | com_addbyte(c, POP_TOP); |
| 3020 | } |
| 3021 | } |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3022 | /* We actually come in here with [tb, val, exc] but the |
| 3023 | END_FINALLY will zap those and jump around. |
| 3024 | The c_stacklevel does not reflect them so we need not pop |
| 3025 | anything. */ |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3026 | com_addbyte(c, END_FINALLY); |
| 3027 | com_backpatch(c, else_anchor); |
| 3028 | if (i < NCH(n)) |
| 3029 | com_node(c, CHILD(n, i+2)); |
| 3030 | com_backpatch(c, end_anchor); |
| 3031 | } |
| 3032 | |
| 3033 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3034 | com_try_finally(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3035 | { |
| 3036 | int finally_anchor = 0; |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3037 | node *ch; |
Guido van Rossum | 94fb82e | 1992-04-05 14:24:50 +0000 | [diff] [blame] | 3038 | |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3039 | com_addfwref(c, SETUP_FINALLY, &finally_anchor); |
| 3040 | block_push(c, SETUP_FINALLY); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3041 | com_node(c, CHILD(n, 2)); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3042 | com_addbyte(c, POP_BLOCK); |
| 3043 | block_pop(c, SETUP_FINALLY); |
| 3044 | block_push(c, END_FINALLY); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3045 | com_addoparg(c, LOAD_CONST, com_addconst(c, Py_None)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3046 | /* While the generated code pushes only one item, |
| 3047 | the try-finally handling can enter here with |
| 3048 | up to three items. OK, here are the details: |
| 3049 | 3 for an exception, 2 for RETURN, 1 for BREAK. */ |
| 3050 | com_push(c, 3); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3051 | com_backpatch(c, finally_anchor); |
| 3052 | ch = CHILD(n, NCH(n)-1); |
| 3053 | com_addoparg(c, SET_LINENO, ch->n_lineno); |
| 3054 | com_node(c, ch); |
| 3055 | com_addbyte(c, END_FINALLY); |
| 3056 | block_pop(c, END_FINALLY); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3057 | com_pop(c, 3); /* Matches the com_push above */ |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3058 | } |
| 3059 | |
| 3060 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3061 | com_try_stmt(struct compiling *c, node *n) |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3062 | { |
| 3063 | REQ(n, try_stmt); |
| 3064 | /* 'try' ':' suite (except_clause ':' suite)+ ['else' ':' suite] |
| 3065 | | 'try' ':' suite 'finally' ':' suite */ |
| 3066 | if (TYPE(CHILD(n, 3)) != except_clause) |
| 3067 | com_try_finally(c, n); |
| 3068 | else |
| 3069 | com_try_except(c, n); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3070 | } |
| 3071 | |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3072 | static node * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3073 | get_rawdocstring(node *n) |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3074 | { |
Guido van Rossum | 164d4ff | 1995-01-26 00:40:09 +0000 | [diff] [blame] | 3075 | int i; |
| 3076 | |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3077 | /* Label to avoid tail recursion */ |
| 3078 | next: |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3079 | switch (TYPE(n)) { |
| 3080 | |
| 3081 | case suite: |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3082 | if (NCH(n) == 1) { |
| 3083 | n = CHILD(n, 0); |
| 3084 | goto next; |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3085 | } |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3086 | /* Fall through */ |
Guido van Rossum | 164d4ff | 1995-01-26 00:40:09 +0000 | [diff] [blame] | 3087 | case file_input: |
| 3088 | for (i = 0; i < NCH(n); i++) { |
| 3089 | node *ch = CHILD(n, i); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3090 | if (TYPE(ch) == stmt) { |
| 3091 | n = ch; |
| 3092 | goto next; |
| 3093 | } |
Guido van Rossum | 164d4ff | 1995-01-26 00:40:09 +0000 | [diff] [blame] | 3094 | } |
| 3095 | break; |
| 3096 | |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3097 | case stmt: |
| 3098 | case simple_stmt: |
| 3099 | case small_stmt: |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3100 | n = CHILD(n, 0); |
| 3101 | goto next; |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3102 | |
| 3103 | case expr_stmt: |
| 3104 | case testlist: |
| 3105 | case test: |
| 3106 | case and_test: |
| 3107 | case not_test: |
| 3108 | case comparison: |
| 3109 | case expr: |
| 3110 | case xor_expr: |
| 3111 | case and_expr: |
| 3112 | case shift_expr: |
| 3113 | case arith_expr: |
| 3114 | case term: |
| 3115 | case factor: |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 3116 | case power: |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3117 | if (NCH(n) == 1) { |
| 3118 | n = CHILD(n, 0); |
| 3119 | goto next; |
| 3120 | } |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3121 | break; |
| 3122 | |
| 3123 | case atom: |
| 3124 | if (TYPE(CHILD(n, 0)) == STRING) |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3125 | return n; |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3126 | break; |
| 3127 | |
| 3128 | } |
| 3129 | return NULL; |
| 3130 | } |
| 3131 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3132 | static PyObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3133 | get_docstring(node *n) |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3134 | { |
Guido van Rossum | 541563e | 1999-01-28 15:08:09 +0000 | [diff] [blame] | 3135 | /* Don't generate doc-strings if run with -OO */ |
| 3136 | if (Py_OptimizeFlag > 1) |
| 3137 | return NULL; |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3138 | n = get_rawdocstring(n); |
| 3139 | if (n == NULL) |
| 3140 | return NULL; |
| 3141 | return parsestrplus(n); |
| 3142 | } |
| 3143 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3144 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3145 | com_suite(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3146 | { |
| 3147 | REQ(n, suite); |
| 3148 | /* simple_stmt | NEWLINE INDENT NEWLINE* (stmt NEWLINE*)+ DEDENT */ |
| 3149 | if (NCH(n) == 1) { |
| 3150 | com_node(c, CHILD(n, 0)); |
| 3151 | } |
| 3152 | else { |
| 3153 | int i; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 3154 | for (i = 0; i < NCH(n) && c->c_errors == 0; i++) { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3155 | node *ch = CHILD(n, i); |
| 3156 | if (TYPE(ch) == stmt) |
| 3157 | com_node(c, ch); |
| 3158 | } |
| 3159 | } |
| 3160 | } |
| 3161 | |
Guido van Rossum | f1aeab7 | 1992-03-27 17:28:26 +0000 | [diff] [blame] | 3162 | /* ARGSUSED */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3163 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3164 | com_continue_stmt(struct compiling *c, node *n) |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 3165 | { |
| 3166 | int i = c->c_nblocks; |
| 3167 | if (i-- > 0 && c->c_block[i] == SETUP_LOOP) { |
| 3168 | com_addoparg(c, JUMP_ABSOLUTE, c->c_begin); |
| 3169 | } |
Fred Drake | fd1f1be | 2000-09-08 16:31:24 +0000 | [diff] [blame] | 3170 | else if (i <= 0) { |
| 3171 | /* at the outer level */ |
| 3172 | com_error(c, PyExc_SyntaxError, |
| 3173 | "'continue' not properly in loop"); |
| 3174 | } |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 3175 | else { |
Fred Drake | fd1f1be | 2000-09-08 16:31:24 +0000 | [diff] [blame] | 3176 | int j; |
Jeremy Hylton | 3faa52e | 2001-02-01 22:48:12 +0000 | [diff] [blame] | 3177 | for (j = i-1; j >= 0; --j) { |
Fred Drake | fd1f1be | 2000-09-08 16:31:24 +0000 | [diff] [blame] | 3178 | if (c->c_block[j] == SETUP_LOOP) |
| 3179 | break; |
| 3180 | } |
Jeremy Hylton | 3faa52e | 2001-02-01 22:48:12 +0000 | [diff] [blame] | 3181 | if (j >= 0) { |
Fred Drake | fd1f1be | 2000-09-08 16:31:24 +0000 | [diff] [blame] | 3182 | /* there is a loop, but something interferes */ |
Jeremy Hylton | 3faa52e | 2001-02-01 22:48:12 +0000 | [diff] [blame] | 3183 | for (; i > j; --i) { |
| 3184 | if (c->c_block[i] == SETUP_EXCEPT || |
| 3185 | c->c_block[i] == SETUP_FINALLY) { |
| 3186 | com_addoparg(c, CONTINUE_LOOP, |
| 3187 | c->c_begin); |
Fred Drake | fd1f1be | 2000-09-08 16:31:24 +0000 | [diff] [blame] | 3188 | return; |
| 3189 | } |
Jeremy Hylton | 3faa52e | 2001-02-01 22:48:12 +0000 | [diff] [blame] | 3190 | if (c->c_block[i] == END_FINALLY) { |
| 3191 | com_error(c, PyExc_SyntaxError, |
| 3192 | "'continue' not supported inside 'finally' clause"); |
| 3193 | return; |
| 3194 | } |
Fred Drake | fd1f1be | 2000-09-08 16:31:24 +0000 | [diff] [blame] | 3195 | } |
| 3196 | } |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3197 | com_error(c, PyExc_SyntaxError, |
| 3198 | "'continue' not properly in loop"); |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 3199 | } |
| 3200 | /* XXX Could allow it inside a 'finally' clause |
| 3201 | XXX if we could pop the exception still on the stack */ |
| 3202 | } |
| 3203 | |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3204 | static int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3205 | com_argdefs(struct compiling *c, node *n) |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3206 | { |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3207 | int i, nch, nargs, ndefs; |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3208 | if (TYPE(n) == lambdef) { |
| 3209 | /* lambdef: 'lambda' [varargslist] ':' test */ |
| 3210 | n = CHILD(n, 1); |
| 3211 | } |
| 3212 | else { |
| 3213 | REQ(n, funcdef); /* funcdef: 'def' NAME parameters ... */ |
| 3214 | n = CHILD(n, 2); |
| 3215 | REQ(n, parameters); /* parameters: '(' [varargslist] ')' */ |
| 3216 | n = CHILD(n, 1); |
| 3217 | } |
| 3218 | if (TYPE(n) != varargslist) |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3219 | return 0; |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3220 | /* varargslist: |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3221 | (fpdef ['=' test] ',')* '*' ....... | |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3222 | fpdef ['=' test] (',' fpdef ['=' test])* [','] */ |
| 3223 | nch = NCH(n); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3224 | nargs = 0; |
| 3225 | ndefs = 0; |
| 3226 | for (i = 0; i < nch; i++) { |
| 3227 | int t; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3228 | if (TYPE(CHILD(n, i)) == STAR || |
| 3229 | TYPE(CHILD(n, i)) == DOUBLESTAR) |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 3230 | break; |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3231 | nargs++; |
| 3232 | i++; |
| 3233 | if (i >= nch) |
Guido van Rossum | a1e7e62 | 1995-09-18 21:44:04 +0000 | [diff] [blame] | 3234 | t = RPAR; /* Anything except EQUAL or COMMA */ |
| 3235 | else |
| 3236 | t = TYPE(CHILD(n, i)); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3237 | if (t == EQUAL) { |
| 3238 | i++; |
| 3239 | ndefs++; |
| 3240 | com_node(c, CHILD(n, i)); |
| 3241 | i++; |
| 3242 | if (i >= nch) |
| 3243 | break; |
| 3244 | t = TYPE(CHILD(n, i)); |
| 3245 | } |
| 3246 | else { |
Guido van Rossum | 29d38cd | 1998-10-02 13:41:54 +0000 | [diff] [blame] | 3247 | /* Treat "(a=1, b)" as an error */ |
| 3248 | if (ndefs) |
| 3249 | com_error(c, PyExc_SyntaxError, |
Guido van Rossum | dfede31 | 1998-10-02 14:06:56 +0000 | [diff] [blame] | 3250 | "non-default argument follows default argument"); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3251 | } |
| 3252 | if (t != COMMA) |
| 3253 | break; |
| 3254 | } |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3255 | return ndefs; |
| 3256 | } |
| 3257 | |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 3258 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3259 | com_funcdef(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3260 | { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3261 | PyObject *co; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3262 | int ndefs; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3263 | REQ(n, funcdef); /* funcdef: 'def' NAME parameters ':' suite */ |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3264 | ndefs = com_argdefs(c, n); |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 3265 | symtable_enter_scope(c->c_symtable, STR(CHILD(n, 1)), TYPE(n), |
| 3266 | n->n_lineno); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3267 | co = (PyObject *)icompile(n, c); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3268 | symtable_exit_scope(c->c_symtable); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3269 | if (co == NULL) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3270 | c->c_errors++; |
| 3271 | else { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3272 | int closure = com_make_closure(c, (PyCodeObject *)co); |
| 3273 | int i = com_addconst(c, co); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3274 | com_addoparg(c, LOAD_CONST, i); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3275 | com_push(c, 1); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3276 | if (closure) |
| 3277 | com_addoparg(c, MAKE_CLOSURE, ndefs); |
| 3278 | else |
| 3279 | com_addoparg(c, MAKE_FUNCTION, ndefs); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3280 | com_pop(c, ndefs); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3281 | com_addop_varname(c, VAR_STORE, STR(CHILD(n, 1))); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3282 | com_pop(c, 1); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3283 | Py_DECREF(co); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3284 | } |
| 3285 | } |
| 3286 | |
| 3287 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3288 | com_bases(struct compiling *c, node *n) |
Guido van Rossum | c5e9629 | 1991-12-10 13:53:51 +0000 | [diff] [blame] | 3289 | { |
Guido van Rossum | f1aeab7 | 1992-03-27 17:28:26 +0000 | [diff] [blame] | 3290 | int i; |
Guido van Rossum | c5e9629 | 1991-12-10 13:53:51 +0000 | [diff] [blame] | 3291 | REQ(n, testlist); |
| 3292 | /* testlist: test (',' test)* [','] */ |
| 3293 | for (i = 0; i < NCH(n); i += 2) |
| 3294 | com_node(c, CHILD(n, i)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3295 | i = (NCH(n)+1) / 2; |
| 3296 | com_addoparg(c, BUILD_TUPLE, i); |
| 3297 | com_pop(c, i-1); |
Guido van Rossum | c5e9629 | 1991-12-10 13:53:51 +0000 | [diff] [blame] | 3298 | } |
| 3299 | |
| 3300 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3301 | com_classdef(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3302 | { |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 3303 | int i; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3304 | PyObject *co, *v; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3305 | char *name; |
| 3306 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3307 | REQ(n, classdef); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 3308 | /* classdef: class NAME ['(' testlist ')'] ':' suite */ |
Guido van Rossum | 7b89b6a | 1997-01-18 08:02:57 +0000 | [diff] [blame] | 3309 | if ((v = PyString_InternFromString(STR(CHILD(n, 1)))) == NULL) { |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 3310 | c->c_errors++; |
| 3311 | return; |
| 3312 | } |
| 3313 | /* Push the class name on the stack */ |
| 3314 | i = com_addconst(c, v); |
| 3315 | com_addoparg(c, LOAD_CONST, i); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3316 | com_push(c, 1); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3317 | Py_DECREF(v); |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 3318 | /* Push the tuple of base classes on the stack */ |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3319 | if (TYPE(CHILD(n, 2)) != LPAR) { |
Guido van Rossum | c5e9629 | 1991-12-10 13:53:51 +0000 | [diff] [blame] | 3320 | com_addoparg(c, BUILD_TUPLE, 0); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3321 | com_push(c, 1); |
| 3322 | } |
Guido van Rossum | 2583165 | 1993-05-19 14:50:45 +0000 | [diff] [blame] | 3323 | else |
| 3324 | com_bases(c, CHILD(n, 3)); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3325 | name = STR(CHILD(n, 1)); |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 3326 | symtable_enter_scope(c->c_symtable, name, TYPE(n), n->n_lineno); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3327 | co = (PyObject *)icompile(n, c); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3328 | symtable_exit_scope(c->c_symtable); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3329 | if (co == NULL) |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 3330 | c->c_errors++; |
| 3331 | else { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3332 | int closure = com_make_closure(c, (PyCodeObject *)co); |
| 3333 | i = com_addconst(c, co); |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 3334 | com_addoparg(c, LOAD_CONST, i); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3335 | com_push(c, 1); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3336 | if (closure) |
| 3337 | com_addoparg(c, MAKE_CLOSURE, 0); |
| 3338 | else |
| 3339 | com_addoparg(c, MAKE_FUNCTION, 0); |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3340 | com_addoparg(c, CALL_FUNCTION, 0); |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 3341 | com_addbyte(c, BUILD_CLASS); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3342 | com_pop(c, 2); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3343 | com_addop_varname(c, VAR_STORE, STR(CHILD(n, 1))); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3344 | Py_DECREF(co); |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 3345 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3346 | } |
| 3347 | |
| 3348 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3349 | com_node(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3350 | { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3351 | loop: |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 3352 | if (c->c_errors) |
| 3353 | return; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3354 | switch (TYPE(n)) { |
| 3355 | |
| 3356 | /* Definition nodes */ |
| 3357 | |
| 3358 | case funcdef: |
| 3359 | com_funcdef(c, n); |
| 3360 | break; |
| 3361 | case classdef: |
| 3362 | com_classdef(c, n); |
| 3363 | break; |
| 3364 | |
| 3365 | /* Trivial parse tree nodes */ |
| 3366 | |
| 3367 | case stmt: |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 3368 | case small_stmt: |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3369 | case flow_stmt: |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3370 | n = CHILD(n, 0); |
| 3371 | goto loop; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 3372 | |
| 3373 | case simple_stmt: |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 3374 | /* small_stmt (';' small_stmt)* [';'] NEWLINE */ |
| 3375 | com_addoparg(c, SET_LINENO, n->n_lineno); |
| 3376 | { |
| 3377 | int i; |
| 3378 | for (i = 0; i < NCH(n)-1; i += 2) |
| 3379 | com_node(c, CHILD(n, i)); |
| 3380 | } |
| 3381 | break; |
| 3382 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3383 | case compound_stmt: |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 3384 | com_addoparg(c, SET_LINENO, n->n_lineno); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3385 | n = CHILD(n, 0); |
| 3386 | goto loop; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3387 | |
| 3388 | /* Statement nodes */ |
| 3389 | |
| 3390 | case expr_stmt: |
| 3391 | com_expr_stmt(c, n); |
| 3392 | break; |
| 3393 | case print_stmt: |
| 3394 | com_print_stmt(c, n); |
| 3395 | break; |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 3396 | case del_stmt: /* 'del' exprlist */ |
Thomas Wouters | 434d082 | 2000-08-24 20:11:32 +0000 | [diff] [blame] | 3397 | com_assign(c, CHILD(n, 1), OP_DELETE, NULL); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3398 | break; |
| 3399 | case pass_stmt: |
| 3400 | break; |
| 3401 | case break_stmt: |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 3402 | if (c->c_loops == 0) { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3403 | com_error(c, PyExc_SyntaxError, |
| 3404 | "'break' outside loop"); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 3405 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3406 | com_addbyte(c, BREAK_LOOP); |
| 3407 | break; |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 3408 | case continue_stmt: |
| 3409 | com_continue_stmt(c, n); |
| 3410 | break; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3411 | case return_stmt: |
| 3412 | com_return_stmt(c, n); |
| 3413 | break; |
| 3414 | case raise_stmt: |
| 3415 | com_raise_stmt(c, n); |
| 3416 | break; |
| 3417 | case import_stmt: |
| 3418 | com_import_stmt(c, n); |
| 3419 | break; |
Guido van Rossum | c5e9629 | 1991-12-10 13:53:51 +0000 | [diff] [blame] | 3420 | case global_stmt: |
Guido van Rossum | c5e9629 | 1991-12-10 13:53:51 +0000 | [diff] [blame] | 3421 | break; |
Guido van Rossum | db3165e | 1993-10-18 17:06:59 +0000 | [diff] [blame] | 3422 | case exec_stmt: |
| 3423 | com_exec_stmt(c, n); |
| 3424 | break; |
Guido van Rossum | 228d7f3 | 1997-04-02 05:24:36 +0000 | [diff] [blame] | 3425 | case assert_stmt: |
| 3426 | com_assert_stmt(c, n); |
| 3427 | break; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3428 | case if_stmt: |
| 3429 | com_if_stmt(c, n); |
| 3430 | break; |
| 3431 | case while_stmt: |
| 3432 | com_while_stmt(c, n); |
| 3433 | break; |
| 3434 | case for_stmt: |
| 3435 | com_for_stmt(c, n); |
| 3436 | break; |
| 3437 | case try_stmt: |
| 3438 | com_try_stmt(c, n); |
| 3439 | break; |
| 3440 | case suite: |
| 3441 | com_suite(c, n); |
| 3442 | break; |
| 3443 | |
| 3444 | /* Expression nodes */ |
| 3445 | |
| 3446 | case testlist: |
Guido van Rossum | 288a60f | 1991-12-16 13:05:10 +0000 | [diff] [blame] | 3447 | com_list(c, n, 0); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3448 | break; |
| 3449 | case test: |
| 3450 | com_test(c, n); |
| 3451 | break; |
| 3452 | case and_test: |
| 3453 | com_and_test(c, n); |
| 3454 | break; |
| 3455 | case not_test: |
| 3456 | com_not_test(c, n); |
| 3457 | break; |
| 3458 | case comparison: |
| 3459 | com_comparison(c, n); |
| 3460 | break; |
| 3461 | case exprlist: |
Guido van Rossum | 288a60f | 1991-12-16 13:05:10 +0000 | [diff] [blame] | 3462 | com_list(c, n, 0); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3463 | break; |
| 3464 | case expr: |
| 3465 | com_expr(c, n); |
| 3466 | break; |
Guido van Rossum | 7928cd7 | 1991-10-24 14:59:31 +0000 | [diff] [blame] | 3467 | case xor_expr: |
| 3468 | com_xor_expr(c, n); |
| 3469 | break; |
| 3470 | case and_expr: |
| 3471 | com_and_expr(c, n); |
| 3472 | break; |
| 3473 | case shift_expr: |
| 3474 | com_shift_expr(c, n); |
| 3475 | break; |
| 3476 | case arith_expr: |
| 3477 | com_arith_expr(c, n); |
| 3478 | break; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3479 | case term: |
| 3480 | com_term(c, n); |
| 3481 | break; |
| 3482 | case factor: |
| 3483 | com_factor(c, n); |
| 3484 | break; |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 3485 | case power: |
| 3486 | com_power(c, n); |
| 3487 | break; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3488 | case atom: |
| 3489 | com_atom(c, n); |
| 3490 | break; |
| 3491 | |
| 3492 | default: |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3493 | com_error(c, PyExc_SystemError, |
| 3494 | "com_node: unexpected node type"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3495 | } |
| 3496 | } |
| 3497 | |
Tim Peters | dbd9ba6 | 2000-07-09 03:09:57 +0000 | [diff] [blame] | 3498 | static void com_fplist(struct compiling *, node *); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3499 | |
| 3500 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3501 | com_fpdef(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3502 | { |
| 3503 | REQ(n, fpdef); /* fpdef: NAME | '(' fplist ')' */ |
| 3504 | if (TYPE(CHILD(n, 0)) == LPAR) |
| 3505 | com_fplist(c, CHILD(n, 1)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3506 | else { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3507 | com_addop_varname(c, VAR_STORE, STR(CHILD(n, 0))); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3508 | com_pop(c, 1); |
| 3509 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3510 | } |
| 3511 | |
| 3512 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3513 | com_fplist(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3514 | { |
Guido van Rossum | a9df32a | 1991-12-31 13:13:35 +0000 | [diff] [blame] | 3515 | REQ(n, fplist); /* fplist: fpdef (',' fpdef)* [','] */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3516 | if (NCH(n) == 1) { |
| 3517 | com_fpdef(c, CHILD(n, 0)); |
| 3518 | } |
| 3519 | else { |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3520 | int i = (NCH(n)+1)/2; |
Thomas Wouters | 0be5aab | 2000-08-11 22:15:52 +0000 | [diff] [blame] | 3521 | com_addoparg(c, UNPACK_SEQUENCE, i); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3522 | com_push(c, i-1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3523 | for (i = 0; i < NCH(n); i += 2) |
| 3524 | com_fpdef(c, CHILD(n, i)); |
| 3525 | } |
| 3526 | } |
| 3527 | |
| 3528 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3529 | com_arglist(struct compiling *c, node *n) |
Guido van Rossum | 49d6dc4 | 1992-01-14 18:30:26 +0000 | [diff] [blame] | 3530 | { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3531 | int nch, i, narg; |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3532 | int complex = 0; |
Guido van Rossum | db9e20f | 1997-07-10 01:06:53 +0000 | [diff] [blame] | 3533 | char nbuf[10]; |
Guido van Rossum | 49d6dc4 | 1992-01-14 18:30:26 +0000 | [diff] [blame] | 3534 | REQ(n, varargslist); |
Guido van Rossum | acbefef | 1992-01-19 16:33:51 +0000 | [diff] [blame] | 3535 | /* varargslist: |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3536 | (fpdef ['=' test] ',')* (fpdef ['=' test] | '*' .....) */ |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3537 | nch = NCH(n); |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3538 | /* Enter all arguments in table of locals */ |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3539 | for (i = 0, narg = 0; i < nch; i++) { |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3540 | node *ch = CHILD(n, i); |
| 3541 | node *fp; |
| 3542 | char *name; |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 3543 | if (TYPE(ch) == STAR || TYPE(ch) == DOUBLESTAR) |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 3544 | break; |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3545 | REQ(ch, fpdef); /* fpdef: NAME | '(' fplist ')' */ |
| 3546 | fp = CHILD(ch, 0); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3547 | if (TYPE(fp) == NAME) { |
| 3548 | PyObject *v; |
| 3549 | name = STR(fp); |
| 3550 | v = PyDict_GetItemString(c->c_cellvars, name); |
| 3551 | if (v) { |
| 3552 | com_addoparg(c, LOAD_FAST, narg); |
| 3553 | com_addoparg(c, STORE_DEREF, |
| 3554 | PyInt_AS_LONG(v)); |
| 3555 | } |
| 3556 | } else { |
Guido van Rossum | db9e20f | 1997-07-10 01:06:53 +0000 | [diff] [blame] | 3557 | name = nbuf; |
| 3558 | sprintf(nbuf, ".%d", i); |
Guido van Rossum | 530956d | 1996-07-21 02:27:43 +0000 | [diff] [blame] | 3559 | complex = 1; |
Guido van Rossum | f10570b | 1995-07-07 22:53:21 +0000 | [diff] [blame] | 3560 | } |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3561 | narg++; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3562 | /* all name updates handled by symtable */ |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3563 | if (++i >= nch) |
Guido van Rossum | 49d6dc4 | 1992-01-14 18:30:26 +0000 | [diff] [blame] | 3564 | break; |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3565 | ch = CHILD(n, i); |
| 3566 | if (TYPE(ch) == EQUAL) |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3567 | i += 2; |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3568 | else |
| 3569 | REQ(ch, COMMA); |
Guido van Rossum | 49d6dc4 | 1992-01-14 18:30:26 +0000 | [diff] [blame] | 3570 | } |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3571 | /* Handle *arguments */ |
| 3572 | if (i < nch) { |
| 3573 | node *ch; |
| 3574 | ch = CHILD(n, i); |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 3575 | if (TYPE(ch) != DOUBLESTAR) { |
| 3576 | REQ(ch, STAR); |
| 3577 | ch = CHILD(n, i+1); |
| 3578 | if (TYPE(ch) == NAME) { |
Jeremy Hylton | 6492bf7 | 2001-02-09 22:55:26 +0000 | [diff] [blame] | 3579 | PyObject *v; |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 3580 | i += 3; |
Jeremy Hylton | 6492bf7 | 2001-02-09 22:55:26 +0000 | [diff] [blame] | 3581 | v = PyDict_GetItemString(c->c_cellvars, |
| 3582 | STR(ch)); |
| 3583 | if (v) { |
| 3584 | com_addoparg(c, LOAD_FAST, narg); |
| 3585 | com_addoparg(c, STORE_DEREF, |
| 3586 | PyInt_AS_LONG(v)); |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 3587 | } |
Jeremy Hylton | 6492bf7 | 2001-02-09 22:55:26 +0000 | [diff] [blame] | 3588 | narg++; |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3589 | } |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3590 | } |
Jeremy Hylton | 6492bf7 | 2001-02-09 22:55:26 +0000 | [diff] [blame] | 3591 | } |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3592 | /* Handle **keywords */ |
| 3593 | if (i < nch) { |
Jeremy Hylton | 6492bf7 | 2001-02-09 22:55:26 +0000 | [diff] [blame] | 3594 | PyObject *v; |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3595 | node *ch; |
| 3596 | ch = CHILD(n, i); |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 3597 | if (TYPE(ch) != DOUBLESTAR) { |
| 3598 | REQ(ch, STAR); |
| 3599 | ch = CHILD(n, i+1); |
| 3600 | REQ(ch, STAR); |
| 3601 | ch = CHILD(n, i+2); |
| 3602 | } |
| 3603 | else |
| 3604 | ch = CHILD(n, i+1); |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3605 | REQ(ch, NAME); |
Jeremy Hylton | 6492bf7 | 2001-02-09 22:55:26 +0000 | [diff] [blame] | 3606 | v = PyDict_GetItemString(c->c_cellvars, STR(ch)); |
| 3607 | if (v) { |
| 3608 | com_addoparg(c, LOAD_FAST, narg); |
| 3609 | com_addoparg(c, STORE_DEREF, PyInt_AS_LONG(v)); |
| 3610 | } |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3611 | } |
| 3612 | if (complex) { |
| 3613 | /* Generate code for complex arguments only after |
| 3614 | having counted the simple arguments */ |
| 3615 | int ilocal = 0; |
| 3616 | for (i = 0; i < nch; i++) { |
| 3617 | node *ch = CHILD(n, i); |
| 3618 | node *fp; |
Guido van Rossum | 50564e8 | 1996-01-12 01:13:16 +0000 | [diff] [blame] | 3619 | if (TYPE(ch) == STAR || TYPE(ch) == DOUBLESTAR) |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3620 | break; |
| 3621 | REQ(ch, fpdef); /* fpdef: NAME | '(' fplist ')' */ |
| 3622 | fp = CHILD(ch, 0); |
| 3623 | if (TYPE(fp) != NAME) { |
| 3624 | com_addoparg(c, LOAD_FAST, ilocal); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3625 | com_push(c, 1); |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3626 | com_fpdef(c, ch); |
| 3627 | } |
| 3628 | ilocal++; |
| 3629 | if (++i >= nch) |
| 3630 | break; |
| 3631 | ch = CHILD(n, i); |
| 3632 | if (TYPE(ch) == EQUAL) |
| 3633 | i += 2; |
| 3634 | else |
| 3635 | REQ(ch, COMMA); |
| 3636 | } |
| 3637 | } |
Guido van Rossum | 49d6dc4 | 1992-01-14 18:30:26 +0000 | [diff] [blame] | 3638 | } |
| 3639 | |
| 3640 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3641 | com_file_input(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3642 | { |
| 3643 | int i; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3644 | PyObject *doc; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3645 | REQ(n, file_input); /* (NEWLINE | stmt)* ENDMARKER */ |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3646 | doc = get_docstring(n); |
| 3647 | if (doc != NULL) { |
| 3648 | int i = com_addconst(c, doc); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3649 | Py_DECREF(doc); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3650 | com_addoparg(c, LOAD_CONST, i); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3651 | com_push(c, 1); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3652 | com_addop_name(c, STORE_NAME, "__doc__"); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3653 | com_pop(c, 1); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3654 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3655 | for (i = 0; i < NCH(n); i++) { |
| 3656 | node *ch = CHILD(n, i); |
| 3657 | if (TYPE(ch) != ENDMARKER && TYPE(ch) != NEWLINE) |
| 3658 | com_node(c, ch); |
| 3659 | } |
| 3660 | } |
| 3661 | |
| 3662 | /* Top-level compile-node interface */ |
| 3663 | |
| 3664 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3665 | compile_funcdef(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3666 | { |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3667 | PyObject *doc; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3668 | node *ch; |
| 3669 | REQ(n, funcdef); /* funcdef: 'def' NAME parameters ':' suite */ |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 3670 | c->c_name = STR(CHILD(n, 1)); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3671 | doc = get_docstring(CHILD(n, 4)); |
| 3672 | if (doc != NULL) { |
| 3673 | (void) com_addconst(c, doc); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3674 | Py_DECREF(doc); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3675 | } |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3676 | else |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3677 | (void) com_addconst(c, Py_None); /* No docstring */ |
Guido van Rossum | 49d6dc4 | 1992-01-14 18:30:26 +0000 | [diff] [blame] | 3678 | ch = CHILD(n, 2); /* parameters: '(' [varargslist] ')' */ |
| 3679 | ch = CHILD(ch, 1); /* ')' | varargslist */ |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3680 | if (TYPE(ch) == varargslist) |
Guido van Rossum | 49d6dc4 | 1992-01-14 18:30:26 +0000 | [diff] [blame] | 3681 | com_arglist(c, ch); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 3682 | c->c_infunction = 1; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3683 | com_node(c, CHILD(n, 4)); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 3684 | c->c_infunction = 0; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3685 | com_addoparg(c, LOAD_CONST, com_addconst(c, Py_None)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3686 | com_push(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3687 | com_addbyte(c, RETURN_VALUE); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3688 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3689 | } |
| 3690 | |
| 3691 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3692 | compile_lambdef(struct compiling *c, node *n) |
Guido van Rossum | 12d12c5 | 1993-10-26 17:58:25 +0000 | [diff] [blame] | 3693 | { |
Guido van Rossum | 590baa4 | 1993-11-30 13:40:46 +0000 | [diff] [blame] | 3694 | node *ch; |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3695 | REQ(n, lambdef); /* lambdef: 'lambda' [varargslist] ':' test */ |
Guido van Rossum | 363ac7d | 1994-11-10 22:40:34 +0000 | [diff] [blame] | 3696 | c->c_name = "<lambda>"; |
Guido van Rossum | 590baa4 | 1993-11-30 13:40:46 +0000 | [diff] [blame] | 3697 | |
| 3698 | ch = CHILD(n, 1); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3699 | (void) com_addconst(c, Py_None); /* No docstring */ |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3700 | if (TYPE(ch) == varargslist) { |
Guido van Rossum | 590baa4 | 1993-11-30 13:40:46 +0000 | [diff] [blame] | 3701 | com_arglist(c, ch); |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3702 | ch = CHILD(n, 3); |
Guido van Rossum | 590baa4 | 1993-11-30 13:40:46 +0000 | [diff] [blame] | 3703 | } |
Guido van Rossum | 681d79a | 1995-07-18 14:51:37 +0000 | [diff] [blame] | 3704 | else |
| 3705 | ch = CHILD(n, 2); |
| 3706 | com_node(c, ch); |
Guido van Rossum | 12d12c5 | 1993-10-26 17:58:25 +0000 | [diff] [blame] | 3707 | com_addbyte(c, RETURN_VALUE); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3708 | com_pop(c, 1); |
Guido van Rossum | 12d12c5 | 1993-10-26 17:58:25 +0000 | [diff] [blame] | 3709 | } |
| 3710 | |
| 3711 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3712 | compile_classdef(struct compiling *c, node *n) |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3713 | { |
| 3714 | node *ch; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3715 | PyObject *doc; |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3716 | REQ(n, classdef); |
| 3717 | /* classdef: 'class' NAME ['(' testlist ')'] ':' suite */ |
| 3718 | c->c_name = STR(CHILD(n, 1)); |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 3719 | c->c_private = c->c_name; |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3720 | ch = CHILD(n, NCH(n)-1); /* The suite */ |
| 3721 | doc = get_docstring(ch); |
| 3722 | if (doc != NULL) { |
| 3723 | int i = com_addconst(c, doc); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3724 | Py_DECREF(doc); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3725 | com_addoparg(c, LOAD_CONST, i); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3726 | com_push(c, 1); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3727 | com_addop_name(c, STORE_NAME, "__doc__"); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3728 | com_pop(c, 1); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3729 | } |
| 3730 | else |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3731 | (void) com_addconst(c, Py_None); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3732 | com_node(c, ch); |
| 3733 | com_addbyte(c, LOAD_LOCALS); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3734 | com_push(c, 1); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3735 | com_addbyte(c, RETURN_VALUE); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3736 | com_pop(c, 1); |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3737 | } |
| 3738 | |
| 3739 | static void |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3740 | compile_node(struct compiling *c, node *n) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3741 | { |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 3742 | com_addoparg(c, SET_LINENO, n->n_lineno); |
| 3743 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3744 | switch (TYPE(n)) { |
| 3745 | |
Guido van Rossum | 4c41778 | 1991-01-21 16:09:22 +0000 | [diff] [blame] | 3746 | case single_input: /* One interactive command */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3747 | /* NEWLINE | simple_stmt | compound_stmt NEWLINE */ |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3748 | c->c_interactive++; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3749 | n = CHILD(n, 0); |
| 3750 | if (TYPE(n) != NEWLINE) |
| 3751 | com_node(c, n); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3752 | com_addoparg(c, LOAD_CONST, com_addconst(c, Py_None)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3753 | com_push(c, 1); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 3754 | com_addbyte(c, RETURN_VALUE); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3755 | com_pop(c, 1); |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 3756 | c->c_interactive--; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3757 | break; |
| 3758 | |
Guido van Rossum | 4c41778 | 1991-01-21 16:09:22 +0000 | [diff] [blame] | 3759 | case file_input: /* A whole file, or built-in function exec() */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3760 | com_file_input(c, n); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3761 | com_addoparg(c, LOAD_CONST, com_addconst(c, Py_None)); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3762 | com_push(c, 1); |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 3763 | com_addbyte(c, RETURN_VALUE); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3764 | com_pop(c, 1); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3765 | break; |
| 3766 | |
Guido van Rossum | 590baa4 | 1993-11-30 13:40:46 +0000 | [diff] [blame] | 3767 | case eval_input: /* Built-in function input() */ |
Guido van Rossum | 4c41778 | 1991-01-21 16:09:22 +0000 | [diff] [blame] | 3768 | com_node(c, CHILD(n, 0)); |
| 3769 | com_addbyte(c, RETURN_VALUE); |
Guido van Rossum | 8b993a9 | 1997-01-17 21:04:03 +0000 | [diff] [blame] | 3770 | com_pop(c, 1); |
Guido van Rossum | 4c41778 | 1991-01-21 16:09:22 +0000 | [diff] [blame] | 3771 | break; |
| 3772 | |
Guido van Rossum | 590baa4 | 1993-11-30 13:40:46 +0000 | [diff] [blame] | 3773 | case lambdef: /* anonymous function definition */ |
| 3774 | compile_lambdef(c, n); |
| 3775 | break; |
| 3776 | |
Guido van Rossum | 4c41778 | 1991-01-21 16:09:22 +0000 | [diff] [blame] | 3777 | case funcdef: /* A function definition */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3778 | compile_funcdef(c, n); |
| 3779 | break; |
| 3780 | |
Guido van Rossum | 4c41778 | 1991-01-21 16:09:22 +0000 | [diff] [blame] | 3781 | case classdef: /* A class definition */ |
Guido van Rossum | 1f4fa50 | 1995-01-07 12:41:23 +0000 | [diff] [blame] | 3782 | compile_classdef(c, n); |
Guido van Rossum | d6f3bc2 | 1990-11-18 17:35:03 +0000 | [diff] [blame] | 3783 | break; |
| 3784 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3785 | default: |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3786 | com_error(c, PyExc_SystemError, |
Guido van Rossum | 452a983 | 1996-09-17 14:32:04 +0000 | [diff] [blame] | 3787 | "compile_node: unexpected node type"); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3788 | } |
| 3789 | } |
| 3790 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3791 | static PyObject * |
| 3792 | dict_keys_inorder(PyObject *dict, int offset) |
| 3793 | { |
| 3794 | PyObject *tuple, *k, *v; |
| 3795 | int i, pos = 0, size = PyDict_Size(dict); |
| 3796 | |
| 3797 | tuple = PyTuple_New(size); |
| 3798 | if (tuple == NULL) |
| 3799 | return NULL; |
| 3800 | while (PyDict_Next(dict, &pos, &k, &v)) { |
| 3801 | i = PyInt_AS_LONG(v); |
| 3802 | Py_INCREF(k); |
| 3803 | PyTuple_SET_ITEM(tuple, i - offset, k); |
| 3804 | } |
| 3805 | return tuple; |
| 3806 | } |
| 3807 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3808 | PyCodeObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3809 | PyNode_Compile(node *n, char *filename) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3810 | { |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 3811 | return jcompile(n, filename, NULL); |
| 3812 | } |
| 3813 | |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 3814 | struct symtable * |
| 3815 | PyNode_CompileSymtable(node *n, char *filename) |
| 3816 | { |
| 3817 | struct symtable *st; |
| 3818 | |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 3819 | st = symtable_init(); |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 3820 | if (st == NULL) |
| 3821 | return NULL; |
Jeremy Hylton | 5acc0c0 | 2001-02-02 20:01:10 +0000 | [diff] [blame] | 3822 | assert(st->st_symbols != NULL); |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 3823 | symtable_enter_scope(st, TOP, TYPE(n), n->n_lineno); |
| 3824 | if (st->st_errors > 0) { |
| 3825 | PySymtable_Free(st); |
| 3826 | return NULL; |
| 3827 | } |
| 3828 | symtable_node(st, n); |
| 3829 | if (st->st_errors > 0) { |
| 3830 | PySymtable_Free(st); |
| 3831 | return NULL; |
| 3832 | } |
| 3833 | return st; |
| 3834 | } |
| 3835 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3836 | static PyCodeObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3837 | icompile(node *n, struct compiling *base) |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 3838 | { |
| 3839 | return jcompile(n, base->c_filename, base); |
| 3840 | } |
| 3841 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3842 | static PyCodeObject * |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3843 | jcompile(node *n, char *filename, struct compiling *base) |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 3844 | { |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3845 | struct compiling sc; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3846 | PyCodeObject *co; |
Guido van Rossum | 590baa4 | 1993-11-30 13:40:46 +0000 | [diff] [blame] | 3847 | if (!com_init(&sc, filename)) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3848 | return NULL; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3849 | if (base) { |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 3850 | sc.c_private = base->c_private; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3851 | sc.c_symtable = base->c_symtable; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3852 | /* c_symtable still points to parent's symbols */ |
| 3853 | if (base->c_nested |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 3854 | || (sc.c_symtable->st_cur->ste_type == TYPE_FUNCTION)) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3855 | sc.c_nested = 1; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3856 | } else { |
Guido van Rossum | 8ff077b | 1996-08-24 06:21:31 +0000 | [diff] [blame] | 3857 | sc.c_private = NULL; |
Jeremy Hylton | 4db62b1 | 2001-02-27 19:07:02 +0000 | [diff] [blame] | 3858 | sc.c_future = PyNode_Future(n, filename); |
| 3859 | if (sc.c_future == NULL || symtable_build(&sc, n) < 0) { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3860 | com_free(&sc); |
| 3861 | return NULL; |
| 3862 | } |
| 3863 | } |
| 3864 | co = NULL; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 3865 | if (symtable_load_symbols(&sc) < 0) { |
| 3866 | sc.c_errors++; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3867 | goto exit; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 3868 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3869 | compile_node(&sc, n); |
| 3870 | com_done(&sc); |
Guido van Rossum | 9bfef44 | 1993-03-29 10:43:31 +0000 | [diff] [blame] | 3871 | if (sc.c_errors == 0) { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3872 | PyObject *consts, *names, *varnames, *filename, *name, |
| 3873 | *freevars, *cellvars; |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3874 | consts = PyList_AsTuple(sc.c_consts); |
| 3875 | names = PyList_AsTuple(sc.c_names); |
| 3876 | varnames = PyList_AsTuple(sc.c_varnames); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3877 | cellvars = dict_keys_inorder(sc.c_cellvars, 0); |
| 3878 | freevars = dict_keys_inorder(sc.c_freevars, |
| 3879 | PyTuple_GET_SIZE(cellvars)); |
Guido van Rossum | 7b89b6a | 1997-01-18 08:02:57 +0000 | [diff] [blame] | 3880 | filename = PyString_InternFromString(sc.c_filename); |
| 3881 | name = PyString_InternFromString(sc.c_name); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3882 | if (!PyErr_Occurred()) |
| 3883 | co = PyCode_New(sc.c_argcount, |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3884 | sc.c_nlocals, |
| 3885 | sc.c_maxstacklevel, |
| 3886 | sc.c_flags, |
| 3887 | sc.c_code, |
| 3888 | consts, |
| 3889 | names, |
| 3890 | varnames, |
| 3891 | freevars, |
| 3892 | cellvars, |
| 3893 | filename, |
| 3894 | name, |
| 3895 | sc.c_firstlineno, |
| 3896 | sc.c_lnotab); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3897 | Py_XDECREF(consts); |
| 3898 | Py_XDECREF(names); |
| 3899 | Py_XDECREF(varnames); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3900 | Py_XDECREF(freevars); |
| 3901 | Py_XDECREF(cellvars); |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 3902 | Py_XDECREF(filename); |
| 3903 | Py_XDECREF(name); |
Guido van Rossum | a082ce4 | 1991-06-04 19:41:56 +0000 | [diff] [blame] | 3904 | } |
Guido van Rossum | 6c2f0c7 | 2000-08-07 19:22:43 +0000 | [diff] [blame] | 3905 | else if (!PyErr_Occurred()) { |
| 3906 | /* This could happen if someone called PyErr_Clear() after an |
| 3907 | error was reported above. That's not supposed to happen, |
| 3908 | but I just plugged one case and I'm not sure there can't be |
| 3909 | others. In that case, raise SystemError so that at least |
| 3910 | it gets reported instead dumping core. */ |
| 3911 | PyErr_SetString(PyExc_SystemError, "lost syntax error"); |
| 3912 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3913 | exit: |
Jeremy Hylton | 74b3bc4 | 2001-02-23 17:55:27 +0000 | [diff] [blame] | 3914 | if (base == NULL) { |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 3915 | PySymtable_Free(sc.c_symtable); |
Jeremy Hylton | 74b3bc4 | 2001-02-23 17:55:27 +0000 | [diff] [blame] | 3916 | sc.c_symtable = NULL; |
| 3917 | } |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3918 | com_free(&sc); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 3919 | return co; |
| 3920 | } |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 3921 | |
| 3922 | int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 3923 | PyCode_Addr2Line(PyCodeObject *co, int addrq) |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 3924 | { |
| 3925 | int size = PyString_Size(co->co_lnotab) / 2; |
Guido van Rossum | 2174dcb | 1999-09-15 22:48:09 +0000 | [diff] [blame] | 3926 | unsigned char *p = (unsigned char*)PyString_AsString(co->co_lnotab); |
Guido van Rossum | da4eb5c | 1997-01-24 03:43:35 +0000 | [diff] [blame] | 3927 | int line = co->co_firstlineno; |
| 3928 | int addr = 0; |
| 3929 | while (--size >= 0) { |
| 3930 | addr += *p++; |
| 3931 | if (addr > addrq) |
| 3932 | break; |
| 3933 | line += *p++; |
| 3934 | } |
| 3935 | return line; |
| 3936 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3937 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3938 | /* The test for LOCAL must come before the test for FREE in order to |
| 3939 | handle classes where name is both local and free. The local var is |
| 3940 | a method and the free var is a free var referenced within a method. |
| 3941 | */ |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3942 | |
| 3943 | static int |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3944 | get_ref_type(struct compiling *c, char *name) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3945 | { |
| 3946 | PyObject *v; |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 3947 | if (c->c_symtable->st_nested_scopes) { |
| 3948 | if (PyDict_GetItemString(c->c_cellvars, name) != NULL) |
| 3949 | return CELL; |
| 3950 | if (PyDict_GetItemString(c->c_locals, name) != NULL) |
| 3951 | return LOCAL; |
| 3952 | if (PyDict_GetItemString(c->c_freevars, name) != NULL) |
| 3953 | return FREE; |
| 3954 | v = PyDict_GetItemString(c->c_globals, name); |
| 3955 | if (v) { |
| 3956 | if (v == Py_None) |
| 3957 | return GLOBAL_EXPLICIT; |
| 3958 | else { |
| 3959 | return GLOBAL_IMPLICIT; |
| 3960 | } |
| 3961 | } |
| 3962 | } else { |
| 3963 | if (PyDict_GetItemString(c->c_locals, name) != NULL) |
| 3964 | return LOCAL; |
| 3965 | v = PyDict_GetItemString(c->c_globals, name); |
| 3966 | if (v) { |
| 3967 | if (v == Py_None) |
| 3968 | return GLOBAL_EXPLICIT; |
| 3969 | else { |
| 3970 | return GLOBAL_IMPLICIT; |
| 3971 | } |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3972 | } |
| 3973 | } |
| 3974 | { |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 3975 | char buf[350]; |
| 3976 | sprintf(buf, |
| 3977 | "unknown scope for %.100s in %.100s(%s) in %s", |
Jeremy Hylton | 483638c | 2001-02-01 20:20:45 +0000 | [diff] [blame] | 3978 | name, c->c_name, |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 3979 | PyObject_REPR(c->c_symtable->st_cur->ste_id), |
| 3980 | c->c_filename); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 3981 | Py_FatalError(buf); |
| 3982 | } |
| 3983 | return -1; /* can't get here */ |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 3984 | } |
| 3985 | |
Guido van Rossum | ee34ac1 | 2001-02-28 22:08:12 +0000 | [diff] [blame^] | 3986 | /* Helper function to issue symbol table warnings */ |
| 3987 | |
| 3988 | static void |
| 3989 | symtable_warn(struct symtable *st, char *msg) |
| 3990 | { |
| 3991 | if (PyErr_WarnExplicit(PyExc_SyntaxWarning, msg, st->st_filename, |
| 3992 | st->st_cur->ste_lineno, NULL, NULL) < 0) { |
| 3993 | if (PyErr_ExceptionMatches(PyExc_SyntaxWarning)) { |
| 3994 | PyErr_SetString(PyExc_SyntaxError, msg); |
| 3995 | PyErr_SyntaxLocation(st->st_filename, |
| 3996 | st->st_cur->ste_lineno); |
| 3997 | } |
| 3998 | st->st_errors++; |
| 3999 | } |
| 4000 | } |
| 4001 | |
Jeremy Hylton | 9f1b993 | 2001-02-28 07:07:43 +0000 | [diff] [blame] | 4002 | /* Helper function for setting lineno and filename */ |
| 4003 | |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4004 | static int |
| 4005 | symtable_build(struct compiling *c, node *n) |
| 4006 | { |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4007 | if ((c->c_symtable = symtable_init()) == NULL) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4008 | return -1; |
Jeremy Hylton | 39e2f3f | 2001-02-28 01:58:08 +0000 | [diff] [blame] | 4009 | c->c_symtable->st_future = c->c_future; |
Jeremy Hylton | 4db62b1 | 2001-02-27 19:07:02 +0000 | [diff] [blame] | 4010 | if (c->c_future->ff_nested_scopes) |
| 4011 | c->c_symtable->st_nested_scopes = 1; |
Jeremy Hylton | 5acc0c0 | 2001-02-02 20:01:10 +0000 | [diff] [blame] | 4012 | c->c_symtable->st_filename = c->c_filename; |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 4013 | symtable_enter_scope(c->c_symtable, TOP, TYPE(n), n->n_lineno); |
| 4014 | if (c->c_symtable->st_errors > 0) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4015 | return -1; |
| 4016 | symtable_node(c->c_symtable, n); |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 4017 | if (c->c_symtable->st_errors > 0) |
| 4018 | return -1; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4019 | /* reset for second pass */ |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 4020 | c->c_symtable->st_nscopes = 1; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4021 | c->c_symtable->st_pass = 2; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4022 | return 0; |
| 4023 | } |
| 4024 | |
| 4025 | static int |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4026 | symtable_init_compiling_symbols(struct compiling *c) |
| 4027 | { |
| 4028 | PyObject *varnames; |
| 4029 | |
| 4030 | varnames = c->c_symtable->st_cur->ste_varnames; |
| 4031 | if (varnames == NULL) { |
| 4032 | varnames = PyList_New(0); |
| 4033 | if (varnames == NULL) |
| 4034 | return -1; |
| 4035 | c->c_symtable->st_cur->ste_varnames = varnames; |
| 4036 | Py_INCREF(varnames); |
| 4037 | } else |
| 4038 | Py_INCREF(varnames); |
| 4039 | c->c_varnames = varnames; |
| 4040 | |
| 4041 | c->c_globals = PyDict_New(); |
| 4042 | if (c->c_globals == NULL) |
| 4043 | return -1; |
| 4044 | c->c_freevars = PyDict_New(); |
| 4045 | if (c->c_freevars == NULL) |
| 4046 | return -1; |
| 4047 | c->c_cellvars = PyDict_New(); |
| 4048 | if (c->c_cellvars == NULL) |
| 4049 | return -1; |
| 4050 | return 0; |
| 4051 | } |
| 4052 | |
| 4053 | struct symbol_info { |
| 4054 | int si_nlocals; |
| 4055 | int si_ncells; |
| 4056 | int si_nfrees; |
| 4057 | int si_nimplicit; |
| 4058 | }; |
| 4059 | |
| 4060 | static void |
| 4061 | symtable_init_info(struct symbol_info *si) |
| 4062 | { |
| 4063 | si->si_nlocals = 0; |
| 4064 | si->si_ncells = 0; |
| 4065 | si->si_nfrees = 0; |
| 4066 | si->si_nimplicit = 0; |
| 4067 | } |
| 4068 | |
| 4069 | static int |
| 4070 | symtable_resolve_free(struct compiling *c, PyObject *name, |
| 4071 | struct symbol_info *si) |
| 4072 | { |
| 4073 | PyObject *dict, *v; |
| 4074 | |
| 4075 | /* Seperate logic for DEF_FREE. If it occurs in a function, |
| 4076 | it indicates a local that we must allocate storage for (a |
| 4077 | cell var). If it occurs in a class, then the class has a |
| 4078 | method and a free variable with the same name. |
| 4079 | */ |
| 4080 | |
| 4081 | if (c->c_symtable->st_cur->ste_type == TYPE_FUNCTION) { |
| 4082 | v = PyInt_FromLong(si->si_ncells++); |
| 4083 | dict = c->c_cellvars; |
| 4084 | } else { |
| 4085 | v = PyInt_FromLong(si->si_nfrees++); |
| 4086 | dict = c->c_freevars; |
| 4087 | } |
| 4088 | if (v == NULL) |
| 4089 | return -1; |
| 4090 | if (PyDict_SetItem(dict, name, v) < 0) { |
| 4091 | Py_DECREF(v); |
| 4092 | return -1; |
| 4093 | } |
| 4094 | Py_DECREF(v); |
| 4095 | return 0; |
| 4096 | } |
| 4097 | |
| 4098 | static int |
| 4099 | symtable_freevar_offsets(PyObject *freevars, int offset) |
| 4100 | { |
| 4101 | PyObject *name, *v; |
| 4102 | int pos; |
| 4103 | |
| 4104 | /* The cell vars are the first elements of the closure, |
| 4105 | followed by the free vars. Update the offsets in |
| 4106 | c_freevars to account for number of cellvars. */ |
| 4107 | pos = 0; |
| 4108 | while (PyDict_Next(freevars, &pos, &name, &v)) { |
| 4109 | int i = PyInt_AS_LONG(v) + offset; |
| 4110 | PyObject *o = PyInt_FromLong(i); |
| 4111 | if (o == NULL) |
| 4112 | return -1; |
| 4113 | if (PyDict_SetItem(freevars, name, o) < 0) { |
| 4114 | Py_DECREF(o); |
| 4115 | return -1; |
| 4116 | } |
| 4117 | Py_DECREF(o); |
| 4118 | } |
| 4119 | return 0; |
| 4120 | } |
| 4121 | |
| 4122 | static int |
| 4123 | symtable_update_flags(struct compiling *c, PySymtableEntryObject *ste, |
| 4124 | struct symbol_info *si) |
| 4125 | { |
| 4126 | if (ste->ste_type != TYPE_MODULE) |
| 4127 | c->c_flags |= CO_NEWLOCALS; |
| 4128 | if (ste->ste_type == TYPE_FUNCTION) { |
| 4129 | c->c_nlocals = si->si_nlocals; |
| 4130 | if (ste->ste_optimized == 0) |
| 4131 | c->c_flags |= CO_OPTIMIZED; |
| 4132 | else if (si->si_ncells || si->si_nfrees |
| 4133 | || (ste->ste_nested && si->si_nimplicit) |
| 4134 | || ste->ste_child_free) { |
| 4135 | if (c->c_symtable->st_nested_scopes) { |
| 4136 | PyErr_Format(PyExc_SyntaxError, |
| 4137 | ILLEGAL_DYNAMIC_SCOPE, |
| 4138 | PyString_AS_STRING(ste->ste_name)); |
Jeremy Hylton | ad3d3f2 | 2001-02-28 17:47:12 +0000 | [diff] [blame] | 4139 | PyErr_SyntaxLocation(c->c_symtable->st_filename, |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4140 | ste->ste_lineno); |
| 4141 | return -1; |
| 4142 | } else { |
| 4143 | char buf[200]; |
| 4144 | sprintf(buf, ILLEGAL_DYNAMIC_SCOPE, |
| 4145 | PyString_AS_STRING(ste->ste_name)); |
| 4146 | if (PyErr_Warn(PyExc_SyntaxWarning, |
| 4147 | buf) < 0) { |
| 4148 | return -1; |
| 4149 | } |
| 4150 | } |
| 4151 | } |
| 4152 | } |
| 4153 | return 0; |
| 4154 | } |
| 4155 | |
| 4156 | static int |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4157 | symtable_load_symbols(struct compiling *c) |
| 4158 | { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4159 | static PyObject *implicit = NULL; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4160 | struct symtable *st = c->c_symtable; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4161 | PySymtableEntryObject *ste = st->st_cur; |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4162 | PyObject *name, *varnames, *v; |
| 4163 | int i, flags, pos; |
| 4164 | struct symbol_info si; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4165 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4166 | if (implicit == NULL) { |
| 4167 | implicit = PyInt_FromLong(1); |
| 4168 | if (implicit == NULL) |
| 4169 | return -1; |
| 4170 | } |
| 4171 | v = NULL; |
| 4172 | |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4173 | if (symtable_init_compiling_symbols(c) < 0) |
| 4174 | goto fail; |
| 4175 | symtable_init_info(&si); |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4176 | varnames = st->st_cur->ste_varnames; |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4177 | si.si_nlocals = PyList_GET_SIZE(varnames); |
| 4178 | c->c_argcount = si.si_nlocals; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4179 | |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4180 | for (i = 0; i < si.si_nlocals; ++i) { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4181 | v = PyInt_FromLong(i); |
| 4182 | if (PyDict_SetItem(c->c_locals, |
| 4183 | PyList_GET_ITEM(varnames, i), v) < 0) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4184 | goto fail; |
| 4185 | Py_DECREF(v); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4186 | } |
| 4187 | |
| 4188 | /* XXX The cases below define the rules for whether a name is |
| 4189 | local or global. The logic could probably be clearer. */ |
| 4190 | pos = 0; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4191 | while (PyDict_Next(ste->ste_symbols, &pos, &name, &v)) { |
| 4192 | flags = PyInt_AS_LONG(v); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4193 | |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4194 | if (flags & DEF_FREE_GLOBAL) |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4195 | /* undo the original DEF_FREE */ |
| 4196 | flags &= ~(DEF_FREE | DEF_FREE_CLASS); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4197 | |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4198 | if ((flags & (DEF_FREE | DEF_FREE_CLASS)) |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4199 | && (flags & (DEF_LOCAL | DEF_PARAM))) |
| 4200 | symtable_resolve_free(c, name, &si); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4201 | |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4202 | if (flags & DEF_STAR) { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4203 | c->c_argcount--; |
| 4204 | c->c_flags |= CO_VARARGS; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4205 | } else if (flags & DEF_DOUBLESTAR) { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4206 | c->c_argcount--; |
| 4207 | c->c_flags |= CO_VARKEYWORDS; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4208 | } else if (flags & DEF_INTUPLE) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4209 | c->c_argcount--; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4210 | else if (flags & DEF_GLOBAL) { |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4211 | if (flags & DEF_PARAM) { |
| 4212 | PyErr_Format(PyExc_SyntaxError, LOCAL_GLOBAL, |
Jeremy Hylton | 5acc0c0 | 2001-02-02 20:01:10 +0000 | [diff] [blame] | 4213 | PyString_AS_STRING(name)); |
Jeremy Hylton | ad3d3f2 | 2001-02-28 17:47:12 +0000 | [diff] [blame] | 4214 | PyErr_SyntaxLocation(st->st_filename, |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4215 | ste->ste_lineno); |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4216 | st->st_errors++; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4217 | goto fail; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4218 | } |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4219 | if (PyDict_SetItem(c->c_globals, name, Py_None) < 0) |
| 4220 | goto fail; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4221 | } else if (flags & DEF_FREE_GLOBAL) { |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4222 | si.si_nimplicit++; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4223 | if (PyDict_SetItem(c->c_globals, name, implicit) < 0) |
| 4224 | goto fail; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4225 | } else if ((flags & DEF_LOCAL) && !(flags & DEF_PARAM)) { |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4226 | v = PyInt_FromLong(si.si_nlocals++); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4227 | if (v == NULL) |
| 4228 | goto fail; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4229 | if (PyDict_SetItem(c->c_locals, name, v) < 0) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4230 | goto fail; |
| 4231 | Py_DECREF(v); |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4232 | if (ste->ste_type != TYPE_CLASS) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4233 | if (PyList_Append(c->c_varnames, name) < 0) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4234 | goto fail; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4235 | } else if (is_free(flags)) { |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4236 | if (ste->ste_nested && st->st_nested_scopes) { |
| 4237 | v = PyInt_FromLong(si.si_nfrees++); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4238 | if (v == NULL) |
| 4239 | goto fail; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4240 | if (PyDict_SetItem(c->c_freevars, name, v) < 0) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4241 | goto fail; |
| 4242 | Py_DECREF(v); |
| 4243 | } else { |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4244 | si.si_nimplicit++; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4245 | if (PyDict_SetItem(c->c_globals, name, |
| 4246 | implicit) < 0) |
| 4247 | goto fail; |
| 4248 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4249 | } |
| 4250 | } |
| 4251 | |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4252 | if (symtable_freevar_offsets(c->c_freevars, si.si_ncells) < 0) |
| 4253 | return -1; |
| 4254 | return symtable_update_flags(c, ste, &si); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4255 | fail: |
| 4256 | /* is this always the right thing to do? */ |
| 4257 | Py_XDECREF(v); |
| 4258 | return -1; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4259 | } |
| 4260 | |
| 4261 | static struct symtable * |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4262 | symtable_init() |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4263 | { |
| 4264 | struct symtable *st; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4265 | |
| 4266 | st = (struct symtable *)PyMem_Malloc(sizeof(struct symtable)); |
| 4267 | if (st == NULL) |
| 4268 | return NULL; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4269 | st->st_pass = 1; |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4270 | st->st_nested_scopes = NESTED_SCOPES_DEFAULT; |
Jeremy Hylton | 5acc0c0 | 2001-02-02 20:01:10 +0000 | [diff] [blame] | 4271 | st->st_filename = NULL; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4272 | if ((st->st_stack = PyList_New(0)) == NULL) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4273 | goto fail; |
| 4274 | if ((st->st_symbols = PyDict_New()) == NULL) |
| 4275 | goto fail; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4276 | st->st_cur = NULL; |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 4277 | st->st_nscopes = 0; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4278 | st->st_errors = 0; |
| 4279 | st->st_tmpname = 0; |
| 4280 | st->st_private = NULL; |
| 4281 | return st; |
| 4282 | fail: |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 4283 | PySymtable_Free(st); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4284 | return NULL; |
| 4285 | } |
| 4286 | |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 4287 | void |
| 4288 | PySymtable_Free(struct symtable *st) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4289 | { |
| 4290 | Py_XDECREF(st->st_symbols); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4291 | Py_XDECREF(st->st_stack); |
Jeremy Hylton | 74b3bc4 | 2001-02-23 17:55:27 +0000 | [diff] [blame] | 4292 | Py_XDECREF(st->st_cur); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4293 | PyMem_Free((void *)st); |
| 4294 | } |
| 4295 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4296 | /* When the compiler exits a scope, it must should update the scope's |
| 4297 | free variable information with the list of free variables in its |
| 4298 | children. |
| 4299 | |
| 4300 | Variables that are free in children and defined in the current |
| 4301 | scope are cellvars. |
| 4302 | |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4303 | 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] | 4304 | false), free variables in children that are not defined here are |
| 4305 | implicit globals. |
| 4306 | |
| 4307 | */ |
| 4308 | |
| 4309 | static int |
| 4310 | symtable_update_free_vars(struct symtable *st) |
| 4311 | { |
Jeremy Hylton | d7f393e | 2001-02-12 16:01:03 +0000 | [diff] [blame] | 4312 | int i, j, def; |
| 4313 | PyObject *o, *name, *list = NULL; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4314 | PySymtableEntryObject *child, *ste = st->st_cur; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4315 | |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4316 | if (ste->ste_type == TYPE_CLASS) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4317 | def = DEF_FREE_CLASS; |
| 4318 | else |
| 4319 | def = DEF_FREE; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4320 | for (i = 0; i < PyList_GET_SIZE(ste->ste_children); ++i) { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4321 | int pos = 0; |
| 4322 | |
Jeremy Hylton | d7f393e | 2001-02-12 16:01:03 +0000 | [diff] [blame] | 4323 | if (list) |
| 4324 | PyList_SetSlice(list, 0, |
| 4325 | ((PyVarObject*)list)->ob_size, 0); |
Barry Warsaw | 0372af7 | 2001-02-23 18:22:59 +0000 | [diff] [blame] | 4326 | child = (PySymtableEntryObject *) |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4327 | PyList_GET_ITEM(ste->ste_children, i); |
| 4328 | while (PyDict_Next(child->ste_symbols, &pos, &name, &o)) { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4329 | int v = PyInt_AS_LONG(o); |
| 4330 | if (!(is_free(v))) |
| 4331 | continue; /* avoids indentation */ |
Jeremy Hylton | d7f393e | 2001-02-12 16:01:03 +0000 | [diff] [blame] | 4332 | if (list == NULL) { |
| 4333 | list = PyList_New(0); |
| 4334 | if (list == NULL) |
| 4335 | return -1; |
| 4336 | } |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4337 | ste->ste_child_free = 1; |
Jeremy Hylton | d7f393e | 2001-02-12 16:01:03 +0000 | [diff] [blame] | 4338 | if (PyList_Append(list, name) < 0) { |
| 4339 | Py_DECREF(list); |
| 4340 | return -1; |
| 4341 | } |
| 4342 | } |
| 4343 | for (j = 0; list && j < PyList_GET_SIZE(list); j++) { |
| 4344 | name = PyList_GET_ITEM(list, j); |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4345 | if (ste->ste_nested) { |
| 4346 | if (symtable_add_def_o(st, ste->ste_symbols, |
Jeremy Hylton | d7f393e | 2001-02-12 16:01:03 +0000 | [diff] [blame] | 4347 | name, def) < 0) { |
| 4348 | Py_DECREF(list); |
| 4349 | return -1; |
| 4350 | } |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4351 | } else { |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4352 | if (symtable_check_global(st, child->ste_id, |
Jeremy Hylton | d7f393e | 2001-02-12 16:01:03 +0000 | [diff] [blame] | 4353 | name) < 0) { |
| 4354 | Py_DECREF(list); |
| 4355 | return -1; |
| 4356 | } |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4357 | } |
| 4358 | } |
| 4359 | } |
Jeremy Hylton | d7f393e | 2001-02-12 16:01:03 +0000 | [diff] [blame] | 4360 | |
| 4361 | Py_XDECREF(list); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4362 | return 0; |
| 4363 | } |
| 4364 | |
| 4365 | /* If the current scope is a non-nested class or if name is not |
| 4366 | defined in the current, non-nested scope, then it is an implicit |
| 4367 | global in all nested scopes. |
| 4368 | */ |
| 4369 | |
| 4370 | static int |
| 4371 | symtable_check_global(struct symtable *st, PyObject *child, PyObject *name) |
| 4372 | { |
| 4373 | PyObject *o; |
| 4374 | int v; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4375 | PySymtableEntryObject *ste = st->st_cur; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4376 | |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4377 | if (ste->ste_type == TYPE_CLASS) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4378 | return symtable_undo_free(st, child, name); |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4379 | o = PyDict_GetItem(ste->ste_symbols, name); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4380 | if (o == NULL) |
| 4381 | return symtable_undo_free(st, child, name); |
| 4382 | v = PyInt_AS_LONG(o); |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 4383 | if (is_free(v) || (v & DEF_GLOBAL)) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4384 | return symtable_undo_free(st, child, name); |
| 4385 | else |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4386 | return symtable_add_def_o(st, ste->ste_symbols, |
| 4387 | name, DEF_FREE); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4388 | } |
| 4389 | |
| 4390 | static int |
| 4391 | symtable_undo_free(struct symtable *st, PyObject *id, |
| 4392 | PyObject *name) |
| 4393 | { |
| 4394 | int i, v, x; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4395 | PyObject *info; |
| 4396 | PySymtableEntryObject *ste; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4397 | |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4398 | ste = (PySymtableEntryObject *)PyDict_GetItem(st->st_symbols, id); |
| 4399 | if (ste == NULL) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4400 | return -1; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4401 | info = PyDict_GetItem(ste->ste_symbols, name); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4402 | if (info == NULL) |
| 4403 | return 0; |
| 4404 | v = PyInt_AS_LONG(info); |
| 4405 | if (is_free(v)) { |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4406 | if (symtable_add_def_o(st, ste->ste_symbols, name, |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4407 | DEF_FREE_GLOBAL) < 0) |
| 4408 | return -1; |
| 4409 | } else |
| 4410 | /* If the name is defined here or declared global, |
| 4411 | then the recursion stops. */ |
| 4412 | return 0; |
| 4413 | |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4414 | for (i = 0; i < PyList_GET_SIZE(ste->ste_children); ++i) { |
| 4415 | PySymtableEntryObject *child; |
Barry Warsaw | 0372af7 | 2001-02-23 18:22:59 +0000 | [diff] [blame] | 4416 | child = (PySymtableEntryObject *) |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4417 | PyList_GET_ITEM(ste->ste_children, i); |
| 4418 | x = symtable_undo_free(st, child->ste_id, name); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4419 | if (x < 0) |
| 4420 | return x; |
| 4421 | } |
| 4422 | return 0; |
| 4423 | } |
| 4424 | |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4425 | /* symtable_enter_scope() gets a reference via PySymtableEntry_New(). |
| 4426 | This reference is released when the scope is exited, via the DECREF |
| 4427 | in symtable_exit_scope(). |
| 4428 | */ |
| 4429 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4430 | static int |
| 4431 | symtable_exit_scope(struct symtable *st) |
| 4432 | { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4433 | int end; |
| 4434 | |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4435 | if (st->st_pass == 1 && st->st_nested_scopes) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4436 | symtable_update_free_vars(st); |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4437 | Py_DECREF(st->st_cur); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4438 | end = PyList_GET_SIZE(st->st_stack) - 1; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4439 | st->st_cur = (PySymtableEntryObject *)PyList_GET_ITEM(st->st_stack, |
| 4440 | end); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4441 | if (PySequence_DelItem(st->st_stack, end) < 0) |
| 4442 | return -1; |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4443 | return 0; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4444 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4445 | |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 4446 | static void |
| 4447 | symtable_enter_scope(struct symtable *st, char *name, int type, |
| 4448 | int lineno) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4449 | { |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4450 | PySymtableEntryObject *prev = NULL; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4451 | |
| 4452 | if (st->st_cur) { |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4453 | prev = st->st_cur; |
| 4454 | if (PyList_Append(st->st_stack, (PyObject *)st->st_cur) < 0) { |
| 4455 | Py_DECREF(st->st_cur); |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 4456 | st->st_errors++; |
| 4457 | return; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4458 | } |
| 4459 | } |
Barry Warsaw | 0372af7 | 2001-02-23 18:22:59 +0000 | [diff] [blame] | 4460 | st->st_cur = (PySymtableEntryObject *) |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4461 | PySymtableEntry_New(st, name, type, lineno); |
| 4462 | if (strcmp(name, TOP) == 0) |
| 4463 | st->st_global = st->st_cur->ste_symbols; |
Jeremy Hylton | 74b3bc4 | 2001-02-23 17:55:27 +0000 | [diff] [blame] | 4464 | if (prev && st->st_pass == 1) { |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4465 | if (PyList_Append(prev->ste_children, |
| 4466 | (PyObject *)st->st_cur) < 0) |
| 4467 | st->st_errors++; |
Jeremy Hylton | 74b3bc4 | 2001-02-23 17:55:27 +0000 | [diff] [blame] | 4468 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4469 | } |
| 4470 | |
| 4471 | static int |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4472 | symtable_lookup(struct symtable *st, char *name) |
| 4473 | { |
| 4474 | char buffer[MANGLE_LEN]; |
| 4475 | PyObject *v; |
| 4476 | int flags; |
| 4477 | |
| 4478 | if (mangle(st->st_private, name, buffer, sizeof(buffer))) |
| 4479 | name = buffer; |
| 4480 | v = PyDict_GetItemString(st->st_cur->ste_symbols, name); |
| 4481 | if (v == NULL) { |
| 4482 | if (PyErr_Occurred()) |
| 4483 | return -1; |
| 4484 | else |
| 4485 | return 0; |
| 4486 | } |
| 4487 | |
| 4488 | flags = PyInt_AS_LONG(v); |
| 4489 | return flags; |
| 4490 | } |
| 4491 | |
| 4492 | static int |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4493 | symtable_add_def(struct symtable *st, char *name, int flag) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4494 | { |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4495 | PyObject *s; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4496 | char buffer[MANGLE_LEN]; |
Jeremy Hylton | 39e2f3f | 2001-02-28 01:58:08 +0000 | [diff] [blame] | 4497 | int ret; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4498 | |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 4499 | if (mangle(st->st_private, name, buffer, sizeof(buffer))) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4500 | name = buffer; |
| 4501 | if ((s = PyString_InternFromString(name)) == NULL) |
| 4502 | return -1; |
Jeremy Hylton | 39e2f3f | 2001-02-28 01:58:08 +0000 | [diff] [blame] | 4503 | ret = symtable_add_def_o(st, st->st_cur->ste_symbols, s, flag); |
| 4504 | Py_DECREF(s); |
| 4505 | return ret; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4506 | } |
| 4507 | |
| 4508 | /* Must only be called with mangled names */ |
| 4509 | |
| 4510 | static int |
| 4511 | symtable_add_def_o(struct symtable *st, PyObject *dict, |
| 4512 | PyObject *name, int flag) |
| 4513 | { |
| 4514 | PyObject *o; |
| 4515 | int val; |
| 4516 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4517 | if ((o = PyDict_GetItem(dict, name))) { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4518 | val = PyInt_AS_LONG(o); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4519 | if ((flag & DEF_PARAM) && (val & DEF_PARAM)) { |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 4520 | PyErr_Format(PyExc_SyntaxError, DUPLICATE_ARGUMENT, |
Jeremy Hylton | 483638c | 2001-02-01 20:20:45 +0000 | [diff] [blame] | 4521 | PyString_AsString(name)); |
Jeremy Hylton | ad3d3f2 | 2001-02-28 17:47:12 +0000 | [diff] [blame] | 4522 | PyErr_SyntaxLocation(st->st_filename, |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4523 | st->st_cur->ste_lineno); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4524 | return -1; |
| 4525 | } |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4526 | val |= flag; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4527 | } else |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4528 | val = flag; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4529 | o = PyInt_FromLong(val); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4530 | if (PyDict_SetItem(dict, name, o) < 0) { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4531 | Py_DECREF(o); |
| 4532 | return -1; |
| 4533 | } |
| 4534 | Py_DECREF(o); |
| 4535 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4536 | if (flag & DEF_PARAM) { |
Jeremy Hylton | cb17ae8 | 2001-02-09 22:22:18 +0000 | [diff] [blame] | 4537 | if (PyList_Append(st->st_cur->ste_varnames, name) < 0) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4538 | return -1; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4539 | } else if (flag & DEF_GLOBAL) { |
| 4540 | /* XXX need to update DEF_GLOBAL for other flags too; |
| 4541 | perhaps only DEF_FREE_GLOBAL */ |
| 4542 | if ((o = PyDict_GetItem(st->st_global, name))) { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4543 | val = PyInt_AS_LONG(o); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4544 | val |= flag; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4545 | } else |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4546 | val = flag; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4547 | o = PyInt_FromLong(val); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4548 | if (PyDict_SetItem(st->st_global, name, o) < 0) { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4549 | Py_DECREF(o); |
| 4550 | return -1; |
| 4551 | } |
| 4552 | Py_DECREF(o); |
| 4553 | } |
| 4554 | return 0; |
| 4555 | } |
| 4556 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4557 | #define symtable_add_use(ST, NAME) symtable_add_def((ST), (NAME), USE) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4558 | |
| 4559 | static void |
| 4560 | symtable_node(struct symtable *st, node *n) |
| 4561 | { |
| 4562 | int i, start = 0; |
| 4563 | |
| 4564 | loop: |
| 4565 | switch (TYPE(n)) { |
| 4566 | case funcdef: { |
| 4567 | char *func_name = STR(CHILD(n, 1)); |
| 4568 | symtable_add_def(st, func_name, DEF_LOCAL); |
| 4569 | symtable_default_args(st, CHILD(n, 2)); |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 4570 | symtable_enter_scope(st, func_name, TYPE(n), n->n_lineno); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4571 | symtable_funcdef(st, n); |
| 4572 | symtable_exit_scope(st); |
| 4573 | break; |
| 4574 | } |
| 4575 | case lambdef: |
| 4576 | if (NCH(n) == 4) |
| 4577 | symtable_default_args(st, CHILD(n, 1)); |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 4578 | symtable_enter_scope(st, "lambda", TYPE(n), n->n_lineno); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4579 | symtable_funcdef(st, n); |
| 4580 | symtable_exit_scope(st); |
| 4581 | break; |
| 4582 | case classdef: { |
| 4583 | char *tmp, *class_name = STR(CHILD(n, 1)); |
| 4584 | symtable_add_def(st, class_name, DEF_LOCAL); |
| 4585 | if (TYPE(CHILD(n, 2)) == LPAR) { |
| 4586 | node *bases = CHILD(n, 3); |
| 4587 | int i; |
| 4588 | for (i = 0; i < NCH(bases); i += 2) { |
| 4589 | symtable_node(st, CHILD(bases, i)); |
| 4590 | } |
| 4591 | } |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 4592 | symtable_enter_scope(st, class_name, TYPE(n), n->n_lineno); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4593 | tmp = st->st_private; |
| 4594 | st->st_private = class_name; |
| 4595 | symtable_node(st, CHILD(n, NCH(n) - 1)); |
| 4596 | st->st_private = tmp; |
| 4597 | symtable_exit_scope(st); |
| 4598 | break; |
| 4599 | } |
| 4600 | case if_stmt: |
| 4601 | for (i = 0; i + 3 < NCH(n); i += 4) { |
| 4602 | if (is_constant_false(NULL, (CHILD(n, i + 1)))) |
| 4603 | continue; |
| 4604 | symtable_node(st, CHILD(n, i + 1)); |
| 4605 | symtable_node(st, CHILD(n, i + 3)); |
| 4606 | } |
| 4607 | if (i + 2 < NCH(n)) |
| 4608 | symtable_node(st, CHILD(n, i + 2)); |
| 4609 | break; |
| 4610 | case global_stmt: |
| 4611 | symtable_global(st, n); |
| 4612 | break; |
| 4613 | case import_stmt: |
| 4614 | symtable_import(st, n); |
| 4615 | break; |
Jeremy Hylton | 483638c | 2001-02-01 20:20:45 +0000 | [diff] [blame] | 4616 | case exec_stmt: { |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4617 | st->st_cur->ste_optimized |= OPT_EXEC; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4618 | symtable_node(st, CHILD(n, 1)); |
| 4619 | if (NCH(n) > 2) |
| 4620 | symtable_node(st, CHILD(n, 3)); |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4621 | else |
| 4622 | st->st_cur->ste_optimized |= OPT_BARE_EXEC; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4623 | if (NCH(n) > 4) |
| 4624 | symtable_node(st, CHILD(n, 5)); |
| 4625 | break; |
Jeremy Hylton | 483638c | 2001-02-01 20:20:45 +0000 | [diff] [blame] | 4626 | |
| 4627 | } |
Jeremy Hylton | 384639f | 2001-02-19 15:50:51 +0000 | [diff] [blame] | 4628 | case assert_stmt: |
| 4629 | if (Py_OptimizeFlag) |
| 4630 | return; |
| 4631 | if (NCH(n) == 2) { |
| 4632 | n = CHILD(n, 1); |
| 4633 | goto loop; |
| 4634 | } else { |
| 4635 | symtable_node(st, CHILD(n, 1)); |
| 4636 | n = CHILD(n, 3); |
| 4637 | goto loop; |
| 4638 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4639 | case except_clause: |
| 4640 | if (NCH(n) == 4) |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 4641 | symtable_assign(st, CHILD(n, 3), 0); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4642 | if (NCH(n) > 1) { |
| 4643 | n = CHILD(n, 1); |
| 4644 | goto loop; |
| 4645 | } |
| 4646 | break; |
| 4647 | case del_stmt: |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 4648 | symtable_assign(st, CHILD(n, 1), 0); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4649 | break; |
| 4650 | case expr_stmt: |
| 4651 | if (NCH(n) == 1) |
| 4652 | n = CHILD(n, 0); |
| 4653 | else { |
| 4654 | if (TYPE(CHILD(n, 1)) == augassign) { |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 4655 | symtable_assign(st, CHILD(n, 0), 0); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4656 | symtable_node(st, CHILD(n, 2)); |
| 4657 | break; |
| 4658 | } else { |
| 4659 | int i; |
| 4660 | for (i = 0; i < NCH(n) - 2; i += 2) |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 4661 | symtable_assign(st, CHILD(n, i), 0); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4662 | n = CHILD(n, NCH(n) - 1); |
| 4663 | } |
| 4664 | } |
| 4665 | goto loop; |
| 4666 | /* watchout for fall-through logic below */ |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4667 | case argument: |
| 4668 | if (NCH(n) == 3) { |
| 4669 | n = CHILD(n, 2); |
| 4670 | goto loop; |
| 4671 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4672 | case listmaker: |
| 4673 | if (NCH(n) > 1 && TYPE(CHILD(n, 1)) == list_for) { |
| 4674 | symtable_list_comprehension(st, CHILD(n, 1)); |
Jeremy Hylton | 5f827f4 | 2001-01-23 01:26:20 +0000 | [diff] [blame] | 4675 | n = CHILD(n, 0); |
| 4676 | goto loop; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4677 | } |
| 4678 | case atom: |
| 4679 | if (TYPE(n) == atom && TYPE(CHILD(n, 0)) == NAME) { |
| 4680 | symtable_add_use(st, STR(CHILD(n, 0))); |
| 4681 | break; |
| 4682 | } |
| 4683 | case for_stmt: |
| 4684 | if (TYPE(n) == for_stmt) { |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 4685 | symtable_assign(st, CHILD(n, 1), 0); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4686 | start = 3; |
| 4687 | } |
| 4688 | default: |
| 4689 | if (NCH(n) == 1) { |
| 4690 | n = CHILD(n, 0); |
| 4691 | goto loop; |
| 4692 | } |
| 4693 | for (i = start; i < NCH(n); ++i) |
| 4694 | if (TYPE(CHILD(n, i)) >= single_input) |
| 4695 | symtable_node(st, CHILD(n, i)); |
| 4696 | } |
| 4697 | } |
| 4698 | |
| 4699 | static void |
| 4700 | symtable_funcdef(struct symtable *st, node *n) |
| 4701 | { |
| 4702 | node *body; |
| 4703 | |
| 4704 | if (TYPE(n) == lambdef) { |
| 4705 | if (NCH(n) == 4) |
| 4706 | symtable_params(st, CHILD(n, 1)); |
| 4707 | } else |
| 4708 | symtable_params(st, CHILD(n, 2)); |
| 4709 | body = CHILD(n, NCH(n) - 1); |
| 4710 | symtable_node(st, body); |
| 4711 | } |
| 4712 | |
| 4713 | /* The next two functions parse the argument tuple. |
| 4714 | symtable_default_arg() checks for names in the default arguments, |
| 4715 | which are references in the defining scope. symtable_params() |
| 4716 | parses the parameter names, which are defined in the function's |
| 4717 | body. |
| 4718 | |
| 4719 | varargslist: |
| 4720 | (fpdef ['=' test] ',')* ('*' NAME [',' '**' NAME] | '**' NAME) |
| 4721 | | fpdef ['=' test] (',' fpdef ['=' test])* [','] |
| 4722 | */ |
| 4723 | |
| 4724 | static void |
| 4725 | symtable_default_args(struct symtable *st, node *n) |
| 4726 | { |
| 4727 | node *c; |
| 4728 | int i; |
| 4729 | |
| 4730 | if (TYPE(n) == parameters) { |
| 4731 | n = CHILD(n, 1); |
| 4732 | if (TYPE(n) == RPAR) |
| 4733 | return; |
| 4734 | } |
| 4735 | REQ(n, varargslist); |
| 4736 | for (i = 0; i < NCH(n); i += 2) { |
| 4737 | c = CHILD(n, i); |
| 4738 | if (TYPE(c) == STAR || TYPE(c) == DOUBLESTAR) { |
| 4739 | break; |
| 4740 | } |
| 4741 | if (i > 0 && (TYPE(CHILD(n, i - 1)) == EQUAL)) |
| 4742 | symtable_node(st, CHILD(n, i)); |
| 4743 | } |
| 4744 | } |
| 4745 | |
| 4746 | static void |
| 4747 | symtable_params(struct symtable *st, node *n) |
| 4748 | { |
Jeremy Hylton | a6ebc48 | 2001-01-25 17:01:49 +0000 | [diff] [blame] | 4749 | int i, complex = -1, ext = 0; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4750 | node *c = NULL; |
| 4751 | |
| 4752 | if (TYPE(n) == parameters) { |
| 4753 | n = CHILD(n, 1); |
| 4754 | if (TYPE(n) == RPAR) |
| 4755 | return; |
| 4756 | } |
| 4757 | REQ(n, varargslist); |
| 4758 | for (i = 0; i < NCH(n); i += 2) { |
| 4759 | c = CHILD(n, i); |
| 4760 | if (TYPE(c) == STAR || TYPE(c) == DOUBLESTAR) { |
| 4761 | ext = 1; |
| 4762 | break; |
| 4763 | } |
| 4764 | if (TYPE(c) == test) { |
| 4765 | continue; |
| 4766 | } |
| 4767 | if (TYPE(CHILD(c, 0)) == NAME) |
| 4768 | symtable_add_def(st, STR(CHILD(c, 0)), DEF_PARAM); |
| 4769 | else { |
| 4770 | char nbuf[10]; |
| 4771 | sprintf(nbuf, ".%d", i); |
| 4772 | symtable_add_def(st, nbuf, DEF_PARAM); |
Jeremy Hylton | a6ebc48 | 2001-01-25 17:01:49 +0000 | [diff] [blame] | 4773 | complex = i; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4774 | } |
| 4775 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4776 | if (ext) { |
| 4777 | c = CHILD(n, i); |
| 4778 | if (TYPE(c) == STAR) { |
| 4779 | i++; |
| 4780 | symtable_add_def(st, STR(CHILD(n, i)), |
| 4781 | DEF_PARAM | DEF_STAR); |
| 4782 | i += 2; |
Jeremy Hylton | 1113cfc | 2001-01-23 00:50:52 +0000 | [diff] [blame] | 4783 | if (i >= NCH(n)) |
Jeremy Hylton | a6ebc48 | 2001-01-25 17:01:49 +0000 | [diff] [blame] | 4784 | c = NULL; |
| 4785 | else |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4786 | c = CHILD(n, i); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4787 | } |
Jeremy Hylton | a6ebc48 | 2001-01-25 17:01:49 +0000 | [diff] [blame] | 4788 | if (c && TYPE(c) == DOUBLESTAR) { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4789 | i++; |
| 4790 | symtable_add_def(st, STR(CHILD(n, i)), |
| 4791 | DEF_PARAM | DEF_DOUBLESTAR); |
| 4792 | } |
| 4793 | } |
Jeremy Hylton | a6ebc48 | 2001-01-25 17:01:49 +0000 | [diff] [blame] | 4794 | if (complex >= 0) { |
| 4795 | int j; |
| 4796 | for (j = 0; j <= complex; j++) { |
| 4797 | c = CHILD(n, j); |
| 4798 | if (TYPE(c) == COMMA) |
Jeremy Hylton | 2b3f0ca | 2001-02-19 23:52:49 +0000 | [diff] [blame] | 4799 | c = CHILD(n, ++j); |
| 4800 | else if (TYPE(c) == EQUAL) |
| 4801 | c = CHILD(n, j += 3); |
Jeremy Hylton | a6ebc48 | 2001-01-25 17:01:49 +0000 | [diff] [blame] | 4802 | if (TYPE(CHILD(c, 0)) == LPAR) |
| 4803 | symtable_params_fplist(st, CHILD(c, 1)); |
| 4804 | } |
| 4805 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4806 | } |
| 4807 | |
| 4808 | static void |
| 4809 | symtable_params_fplist(struct symtable *st, node *n) |
| 4810 | { |
| 4811 | int i; |
| 4812 | node *c; |
| 4813 | |
| 4814 | REQ(n, fplist); |
| 4815 | for (i = 0; i < NCH(n); i += 2) { |
| 4816 | c = CHILD(n, i); |
| 4817 | REQ(c, fpdef); |
| 4818 | if (NCH(c) == 1) |
| 4819 | symtable_add_def(st, STR(CHILD(c, 0)), |
| 4820 | DEF_PARAM | DEF_INTUPLE); |
| 4821 | else |
| 4822 | symtable_params_fplist(st, CHILD(c, 1)); |
| 4823 | } |
| 4824 | |
| 4825 | } |
| 4826 | |
| 4827 | static void |
| 4828 | symtable_global(struct symtable *st, node *n) |
| 4829 | { |
| 4830 | int i; |
| 4831 | |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4832 | for (i = 1; i < NCH(n); i += 2) { |
| 4833 | char *name = STR(CHILD(n, i)); |
Jeremy Hylton | be77cf7 | 2001-02-27 05:15:57 +0000 | [diff] [blame] | 4834 | int flags; |
| 4835 | |
| 4836 | flags = symtable_lookup(st, name); |
Jeremy Hylton | 39e2f3f | 2001-02-28 01:58:08 +0000 | [diff] [blame] | 4837 | if (flags < 0) |
| 4838 | continue; |
Jeremy Hylton | be77cf7 | 2001-02-27 05:15:57 +0000 | [diff] [blame] | 4839 | if (flags && flags != DEF_GLOBAL) { |
| 4840 | char buf[500]; |
| 4841 | if (flags & DEF_PARAM) { |
| 4842 | PyErr_Format(PyExc_SyntaxError, |
| 4843 | "name '%.400s' is local and global", |
Jeremy Hylton | 39e2f3f | 2001-02-28 01:58:08 +0000 | [diff] [blame] | 4844 | name); |
Jeremy Hylton | ad3d3f2 | 2001-02-28 17:47:12 +0000 | [diff] [blame] | 4845 | PyErr_SyntaxLocation(st->st_filename, |
Jeremy Hylton | be77cf7 | 2001-02-27 05:15:57 +0000 | [diff] [blame] | 4846 | st->st_cur->ste_lineno); |
| 4847 | st->st_errors++; |
| 4848 | return; |
Guido van Rossum | 0bba7f8 | 2001-02-28 21:55:38 +0000 | [diff] [blame] | 4849 | } |
| 4850 | else { |
| 4851 | if (flags & DEF_LOCAL) |
| 4852 | sprintf(buf, GLOBAL_AFTER_ASSIGN, |
| 4853 | name); |
| 4854 | else |
| 4855 | sprintf(buf, GLOBAL_AFTER_USE, name); |
Guido van Rossum | ee34ac1 | 2001-02-28 22:08:12 +0000 | [diff] [blame^] | 4856 | symtable_warn(st, buf); |
Jeremy Hylton | be77cf7 | 2001-02-27 05:15:57 +0000 | [diff] [blame] | 4857 | } |
| 4858 | } |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4859 | symtable_add_def(st, name, DEF_GLOBAL); |
| 4860 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4861 | } |
| 4862 | |
| 4863 | static void |
| 4864 | symtable_list_comprehension(struct symtable *st, node *n) |
| 4865 | { |
| 4866 | char tmpname[12]; |
| 4867 | |
Tim Peters | 3081421 | 2001-02-17 05:30:26 +0000 | [diff] [blame] | 4868 | sprintf(tmpname, "_[%d]", ++st->st_tmpname); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4869 | symtable_add_def(st, tmpname, DEF_LOCAL); |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 4870 | symtable_assign(st, CHILD(n, 1), 0); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4871 | symtable_node(st, CHILD(n, 3)); |
| 4872 | if (NCH(n) == 5) |
| 4873 | symtable_node(st, CHILD(n, 4)); |
| 4874 | --st->st_tmpname; |
| 4875 | } |
| 4876 | |
| 4877 | static void |
| 4878 | symtable_import(struct symtable *st, node *n) |
| 4879 | { |
| 4880 | int i; |
Jeremy Hylton | 483638c | 2001-02-01 20:20:45 +0000 | [diff] [blame] | 4881 | /* import_stmt: 'import' dotted_as_name (',' dotted_as_name)* |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4882 | | 'from' dotted_name 'import' |
| 4883 | ('*' | import_as_name (',' import_as_name)*) |
Jeremy Hylton | 483638c | 2001-02-01 20:20:45 +0000 | [diff] [blame] | 4884 | import_as_name: NAME [NAME NAME] |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4885 | */ |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4886 | if (STR(CHILD(n, 0))[0] == 'f') { /* from */ |
Jeremy Hylton | 39e2f3f | 2001-02-28 01:58:08 +0000 | [diff] [blame] | 4887 | node *dotname = CHILD(n, 1); |
| 4888 | if (strcmp(STR(CHILD(dotname, 0)), "__future__") == 0) { |
| 4889 | /* check for bogus imports */ |
| 4890 | if (n->n_lineno >= st->st_future->ff_last_lineno) { |
| 4891 | PyErr_SetString(PyExc_SyntaxError, |
| 4892 | LATE_FUTURE); |
Jeremy Hylton | ad3d3f2 | 2001-02-28 17:47:12 +0000 | [diff] [blame] | 4893 | PyErr_SyntaxLocation(st->st_filename, |
Jeremy Hylton | 39e2f3f | 2001-02-28 01:58:08 +0000 | [diff] [blame] | 4894 | n->n_lineno); |
| 4895 | st->st_errors++; |
| 4896 | return; |
| 4897 | } |
| 4898 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4899 | if (TYPE(CHILD(n, 3)) == STAR) { |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4900 | st->st_cur->ste_optimized |= OPT_IMPORT_STAR; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4901 | } else { |
| 4902 | for (i = 3; i < NCH(n); i += 2) { |
| 4903 | node *c = CHILD(n, i); |
| 4904 | if (NCH(c) > 1) /* import as */ |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 4905 | symtable_assign(st, CHILD(c, 2), |
| 4906 | DEF_IMPORT); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4907 | else |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 4908 | symtable_assign(st, CHILD(c, 0), |
| 4909 | DEF_IMPORT); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4910 | } |
| 4911 | } |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 4912 | } else { |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4913 | for (i = 1; i < NCH(n); i += 2) { |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 4914 | symtable_assign(st, CHILD(n, i), DEF_IMPORT); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4915 | } |
| 4916 | } |
| 4917 | } |
| 4918 | |
| 4919 | static void |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 4920 | symtable_assign(struct symtable *st, node *n, int flag) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4921 | { |
| 4922 | node *tmp; |
| 4923 | int i; |
| 4924 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4925 | loop: |
| 4926 | switch (TYPE(n)) { |
| 4927 | case lambdef: |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 4928 | /* invalid assignment, e.g. lambda x:x=2. The next |
| 4929 | pass will catch this error. */ |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4930 | return; |
| 4931 | case power: |
| 4932 | if (NCH(n) > 2) { |
| 4933 | for (i = 2; i < NCH(n); ++i) |
| 4934 | if (TYPE(CHILD(n, i)) != DOUBLESTAR) |
| 4935 | symtable_node(st, CHILD(n, i)); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 4936 | } |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4937 | if (NCH(n) > 1) { |
| 4938 | symtable_node(st, CHILD(n, 0)); |
| 4939 | symtable_node(st, CHILD(n, 1)); |
| 4940 | } else { |
| 4941 | n = CHILD(n, 0); |
| 4942 | goto loop; |
| 4943 | } |
| 4944 | return; |
| 4945 | case listmaker: |
| 4946 | if (NCH(n) > 1 && TYPE(CHILD(n, 1)) == list_for) |
| 4947 | symtable_list_comprehension(st, CHILD(n, 1)); |
| 4948 | else { |
| 4949 | for (i = 0; i < NCH(n); i += 2) |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 4950 | symtable_assign(st, CHILD(n, i), flag); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4951 | } |
| 4952 | return; |
| 4953 | case exprlist: |
| 4954 | case testlist: |
| 4955 | if (NCH(n) == 1) { |
| 4956 | n = CHILD(n, 0); |
| 4957 | goto loop; |
| 4958 | } |
| 4959 | else { |
| 4960 | int i; |
| 4961 | for (i = 0; i < NCH(n); i += 2) |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 4962 | symtable_assign(st, CHILD(n, i), flag); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4963 | return; |
| 4964 | } |
| 4965 | goto loop; |
| 4966 | case atom: |
| 4967 | tmp = CHILD(n, 0); |
| 4968 | if (TYPE(tmp) == LPAR || TYPE(tmp) == LSQB) { |
| 4969 | n = CHILD(n, 1); |
| 4970 | goto loop; |
| 4971 | } else if (TYPE(tmp) == NAME) |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 4972 | symtable_add_def(st, STR(tmp), DEF_LOCAL | flag); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4973 | return; |
| 4974 | case dotted_as_name: |
| 4975 | if (NCH(n) == 3) |
| 4976 | symtable_add_def(st, STR(CHILD(n, 2)), |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 4977 | DEF_LOCAL | flag); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4978 | else |
| 4979 | symtable_add_def(st, |
| 4980 | STR(CHILD(CHILD(n, |
| 4981 | 0), 0)), |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 4982 | DEF_LOCAL | flag); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4983 | return; |
| 4984 | case dotted_name: |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 4985 | symtable_add_def(st, STR(CHILD(n, 0)), DEF_LOCAL | flag); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4986 | return; |
| 4987 | case NAME: |
Jeremy Hylton | eab156f | 2001-01-30 01:24:43 +0000 | [diff] [blame] | 4988 | symtable_add_def(st, STR(n), DEF_LOCAL | flag); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4989 | return; |
| 4990 | default: |
| 4991 | if (NCH(n) == 0) |
| 4992 | return; |
Jeremy Hylton | 17820c4 | 2001-02-19 15:33:10 +0000 | [diff] [blame] | 4993 | if (NCH(n) == 1) { |
| 4994 | n = CHILD(n, 0); |
| 4995 | goto loop; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 4996 | } |
Jeremy Hylton | 17820c4 | 2001-02-19 15:33:10 +0000 | [diff] [blame] | 4997 | /* Should only occur for errors like x + 1 = 1, |
| 4998 | which will be caught in the next pass. */ |
| 4999 | for (i = 0; i < NCH(n); ++i) |
| 5000 | if (TYPE(CHILD(n, i)) >= single_input) |
| 5001 | symtable_assign(st, CHILD(n, i), flag); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5002 | } |
| 5003 | } |