Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1 | /* |
| 2 | * This file compiles an abstract syntax tree (AST) into Python bytecode. |
| 3 | * |
| 4 | * The primary entry point is PyAST_Compile(), which returns a |
| 5 | * PyCodeObject. The compiler makes several passes to build the code |
| 6 | * object: |
| 7 | * 1. Checks for future statements. See future.c |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 8 | * 2. Builds a symbol table. See symtable.c. |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 9 | * 3. Generate code for basic blocks. See compiler_mod() in this file. |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 10 | * 4. Assemble the basic blocks into final code. See assemble() in |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 11 | * this file. |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 12 | * 5. Optimize the byte code (peephole optimizations). See peephole.c |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 13 | * |
| 14 | * Note that compiler_mod() suggests module, but the module ast type |
| 15 | * (mod_ty) has cases for expressions and interactive statements. |
Nick Coghlan | 944d3eb | 2005-11-16 12:46:55 +0000 | [diff] [blame] | 16 | * |
Jeremy Hylton | e9357b2 | 2006-03-01 15:47:05 +0000 | [diff] [blame] | 17 | * CAUTION: The VISIT_* macros abort the current function when they |
| 18 | * encounter a problem. So don't invoke them when there is memory |
| 19 | * which needs to be released. Code blocks are OK, as the compiler |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 20 | * structure takes care of releasing those. Use the arena to manage |
| 21 | * objects. |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 22 | */ |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 23 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 24 | #include "Python.h" |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 25 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 26 | #include "Python-ast.h" |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 27 | #include "node.h" |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 28 | #include "ast.h" |
| 29 | #include "code.h" |
Jeremy Hylton | 4b38da6 | 2001-02-02 18:19:15 +0000 | [diff] [blame] | 30 | #include "symtable.h" |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 31 | #include "opcode.h" |
Serhiy Storchaka | b0f80b0 | 2016-05-24 09:15:14 +0300 | [diff] [blame] | 32 | #include "wordcode_helpers.h" |
Guido van Rossum | b05a5c7 | 1997-05-07 17:46:13 +0000 | [diff] [blame] | 33 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 34 | #define DEFAULT_BLOCK_SIZE 16 |
| 35 | #define DEFAULT_BLOCKS 8 |
| 36 | #define DEFAULT_CODE_SIZE 128 |
| 37 | #define DEFAULT_LNOTAB_SIZE 16 |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 38 | |
Nick Coghlan | 650f0d0 | 2007-04-15 12:05:43 +0000 | [diff] [blame] | 39 | #define COMP_GENEXP 0 |
| 40 | #define COMP_LISTCOMP 1 |
| 41 | #define COMP_SETCOMP 2 |
Guido van Rossum | 992d4a3 | 2007-07-11 13:09:30 +0000 | [diff] [blame] | 42 | #define COMP_DICTCOMP 3 |
Nick Coghlan | 650f0d0 | 2007-04-15 12:05:43 +0000 | [diff] [blame] | 43 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 44 | struct instr { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 45 | unsigned i_jabs : 1; |
| 46 | unsigned i_jrel : 1; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 47 | unsigned char i_opcode; |
| 48 | int i_oparg; |
| 49 | struct basicblock_ *i_target; /* target block (if jump instruction) */ |
| 50 | int i_lineno; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 51 | }; |
| 52 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 53 | typedef struct basicblock_ { |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 54 | /* Each basicblock in a compilation unit is linked via b_list in the |
| 55 | reverse order that the block are allocated. b_list points to the next |
| 56 | block, not to be confused with b_next, which is next by control flow. */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 57 | struct basicblock_ *b_list; |
| 58 | /* number of instructions used */ |
| 59 | int b_iused; |
| 60 | /* length of instruction array (b_instr) */ |
| 61 | int b_ialloc; |
| 62 | /* pointer to an array of instructions, initially NULL */ |
| 63 | struct instr *b_instr; |
| 64 | /* If b_next is non-NULL, it is a pointer to the next |
| 65 | block reached by normal control flow. */ |
| 66 | struct basicblock_ *b_next; |
| 67 | /* b_seen is used to perform a DFS of basicblocks. */ |
| 68 | unsigned b_seen : 1; |
| 69 | /* b_return is true if a RETURN_VALUE opcode is inserted. */ |
| 70 | unsigned b_return : 1; |
| 71 | /* depth of stack upon entry of block, computed by stackdepth() */ |
| 72 | int b_startdepth; |
| 73 | /* instruction offset for block, computed by assemble_jump_offsets() */ |
| 74 | int b_offset; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 75 | } basicblock; |
| 76 | |
| 77 | /* fblockinfo tracks the current frame block. |
| 78 | |
Jeremy Hylton | e9357b2 | 2006-03-01 15:47:05 +0000 | [diff] [blame] | 79 | A frame block is used to handle loops, try/except, and try/finally. |
| 80 | It's called a frame block to distinguish it from a basic block in the |
| 81 | compiler IR. |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 82 | */ |
| 83 | |
| 84 | enum fblocktype { LOOP, EXCEPT, FINALLY_TRY, FINALLY_END }; |
| 85 | |
| 86 | struct fblockinfo { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 87 | enum fblocktype fb_type; |
| 88 | basicblock *fb_block; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 89 | }; |
| 90 | |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 91 | enum { |
| 92 | COMPILER_SCOPE_MODULE, |
| 93 | COMPILER_SCOPE_CLASS, |
| 94 | COMPILER_SCOPE_FUNCTION, |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 95 | COMPILER_SCOPE_ASYNC_FUNCTION, |
Benjamin Peterson | 6b4f780 | 2013-10-20 17:50:28 -0400 | [diff] [blame] | 96 | COMPILER_SCOPE_LAMBDA, |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 97 | COMPILER_SCOPE_COMPREHENSION, |
| 98 | }; |
| 99 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 100 | /* The following items change on entry and exit of code blocks. |
| 101 | They must be saved and restored when returning to a block. |
| 102 | */ |
| 103 | struct compiler_unit { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 104 | PySTEntryObject *u_ste; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 105 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 106 | PyObject *u_name; |
Benjamin Peterson | 6b4f780 | 2013-10-20 17:50:28 -0400 | [diff] [blame] | 107 | PyObject *u_qualname; /* dot-separated qualified name (lazy) */ |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 108 | int u_scope_type; |
| 109 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 110 | /* The following fields are dicts that map objects to |
| 111 | the index of them in co_XXX. The index is used as |
| 112 | the argument for opcodes that refer to those collections. |
| 113 | */ |
| 114 | PyObject *u_consts; /* all constants */ |
| 115 | PyObject *u_names; /* all names */ |
| 116 | PyObject *u_varnames; /* local variables */ |
| 117 | PyObject *u_cellvars; /* cell variables */ |
| 118 | PyObject *u_freevars; /* free variables */ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 119 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 120 | PyObject *u_private; /* for private name mangling */ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 121 | |
Victor Stinner | f8e3221 | 2013-11-19 23:56:34 +0100 | [diff] [blame] | 122 | Py_ssize_t u_argcount; /* number of arguments for block */ |
| 123 | Py_ssize_t u_kwonlyargcount; /* number of keyword only arguments for block */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 124 | /* Pointer to the most recently allocated block. By following b_list |
| 125 | members, you can reach all early allocated blocks. */ |
| 126 | basicblock *u_blocks; |
| 127 | basicblock *u_curblock; /* pointer to current block */ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 128 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 129 | int u_nfblocks; |
| 130 | struct fblockinfo u_fblock[CO_MAXBLOCKS]; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 131 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 132 | int u_firstlineno; /* the first lineno of the block */ |
| 133 | int u_lineno; /* the lineno for the current stmt */ |
Benjamin Peterson | d4efd9e | 2010-09-20 23:02:10 +0000 | [diff] [blame] | 134 | int u_col_offset; /* the offset of the current stmt */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 135 | int u_lineno_set; /* boolean to indicate whether instr |
| 136 | has been generated with current lineno */ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 137 | }; |
| 138 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 139 | /* This struct captures the global state of a compilation. |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 140 | |
Jeremy Hylton | e9357b2 | 2006-03-01 15:47:05 +0000 | [diff] [blame] | 141 | The u pointer points to the current compilation unit, while units |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 142 | for enclosing blocks are stored in c_stack. The u and c_stack are |
Jeremy Hylton | e9357b2 | 2006-03-01 15:47:05 +0000 | [diff] [blame] | 143 | managed by compiler_enter_scope() and compiler_exit_scope(). |
Nick Coghlan | aab9c2b | 2012-11-04 23:14:34 +1000 | [diff] [blame] | 144 | |
| 145 | Note that we don't track recursion levels during compilation - the |
| 146 | task of detecting and rejecting excessive levels of nesting is |
| 147 | handled by the symbol analysis pass. |
| 148 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 149 | */ |
| 150 | |
| 151 | struct compiler { |
Victor Stinner | 14e461d | 2013-08-26 22:28:21 +0200 | [diff] [blame] | 152 | PyObject *c_filename; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 153 | struct symtable *c_st; |
| 154 | PyFutureFeatures *c_future; /* pointer to module's __future__ */ |
| 155 | PyCompilerFlags *c_flags; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 156 | |
Georg Brandl | 8334fd9 | 2010-12-04 10:26:46 +0000 | [diff] [blame] | 157 | int c_optimize; /* optimization level */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 158 | int c_interactive; /* true if in interactive mode */ |
| 159 | int c_nestlevel; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 160 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 161 | struct compiler_unit *u; /* compiler state for current block */ |
| 162 | PyObject *c_stack; /* Python list holding compiler_unit ptrs */ |
| 163 | PyArena *c_arena; /* pointer to memory allocation arena */ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 164 | }; |
| 165 | |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 166 | static int compiler_enter_scope(struct compiler *, identifier, int, void *, int); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 167 | static void compiler_free(struct compiler *); |
| 168 | static basicblock *compiler_new_block(struct compiler *); |
| 169 | static int compiler_next_instr(struct compiler *, basicblock *); |
| 170 | static int compiler_addop(struct compiler *, int); |
| 171 | static int compiler_addop_o(struct compiler *, int, PyObject *, PyObject *); |
Victor Stinner | f8e3221 | 2013-11-19 23:56:34 +0100 | [diff] [blame] | 172 | static int compiler_addop_i(struct compiler *, int, Py_ssize_t); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 173 | static int compiler_addop_j(struct compiler *, int, basicblock *, int); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 174 | static int compiler_error(struct compiler *, const char *); |
| 175 | static int compiler_nameop(struct compiler *, identifier, expr_context_ty); |
| 176 | |
| 177 | static PyCodeObject *compiler_mod(struct compiler *, mod_ty); |
| 178 | static int compiler_visit_stmt(struct compiler *, stmt_ty); |
| 179 | static int compiler_visit_keyword(struct compiler *, keyword_ty); |
| 180 | static int compiler_visit_expr(struct compiler *, expr_ty); |
| 181 | static int compiler_augassign(struct compiler *, stmt_ty); |
Yury Selivanov | f8cb8a1 | 2016-09-08 20:50:03 -0700 | [diff] [blame] | 182 | static int compiler_annassign(struct compiler *, stmt_ty); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 183 | static int compiler_visit_slice(struct compiler *, slice_ty, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 184 | expr_context_ty); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 185 | |
| 186 | static int compiler_push_fblock(struct compiler *, enum fblocktype, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 187 | basicblock *); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 188 | static void compiler_pop_fblock(struct compiler *, enum fblocktype, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 189 | basicblock *); |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 190 | /* Returns true if there is a loop on the fblock stack. */ |
| 191 | static int compiler_in_loop(struct compiler *); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 192 | |
| 193 | static int inplace_binop(struct compiler *, operator_ty); |
Georg Brandl | 8334fd9 | 2010-12-04 10:26:46 +0000 | [diff] [blame] | 194 | static int expr_constant(struct compiler *, expr_ty); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 195 | |
Benjamin Peterson | bf1bbc1 | 2011-05-27 13:58:08 -0500 | [diff] [blame] | 196 | static int compiler_with(struct compiler *, stmt_ty, int); |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 197 | static int compiler_async_with(struct compiler *, stmt_ty, int); |
| 198 | static int compiler_async_for(struct compiler *, stmt_ty); |
Victor Stinner | 976bb40 | 2016-03-23 11:36:19 +0100 | [diff] [blame] | 199 | static int compiler_call_helper(struct compiler *c, int n, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 200 | asdl_seq *args, |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 201 | asdl_seq *keywords); |
Benjamin Peterson | 43af12b | 2011-05-29 11:43:10 -0500 | [diff] [blame] | 202 | static int compiler_try_except(struct compiler *, stmt_ty); |
Benjamin Peterson | 6b4f780 | 2013-10-20 17:50:28 -0400 | [diff] [blame] | 203 | static int compiler_set_qualname(struct compiler *); |
Guido van Rossum | c2e2074 | 2006-02-27 22:32:47 +0000 | [diff] [blame] | 204 | |
Yury Selivanov | 52c4e7c | 2016-09-09 10:36:01 -0700 | [diff] [blame] | 205 | static int compiler_sync_comprehension_generator( |
| 206 | struct compiler *c, |
| 207 | asdl_seq *generators, int gen_index, |
| 208 | expr_ty elt, expr_ty val, int type); |
| 209 | |
| 210 | static int compiler_async_comprehension_generator( |
| 211 | struct compiler *c, |
| 212 | asdl_seq *generators, int gen_index, |
| 213 | expr_ty elt, expr_ty val, int type); |
| 214 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 215 | static PyCodeObject *assemble(struct compiler *, int addNone); |
| 216 | static PyObject *__doc__; |
| 217 | |
Benjamin Peterson | 9e77f72 | 2015-05-07 18:41:47 -0400 | [diff] [blame] | 218 | #define CAPSULE_NAME "compile.c compiler unit" |
Benjamin Peterson | b173f78 | 2009-05-05 22:31:58 +0000 | [diff] [blame] | 219 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 220 | PyObject * |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 221 | _Py_Mangle(PyObject *privateobj, PyObject *ident) |
Michael W. Hudson | 6093462 | 2004-08-12 17:56:29 +0000 | [diff] [blame] | 222 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 223 | /* Name mangling: __private becomes _classname__private. |
| 224 | This is independent from how the name is used. */ |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 225 | PyObject *result; |
| 226 | size_t nlen, plen, ipriv; |
| 227 | Py_UCS4 maxchar; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 228 | if (privateobj == NULL || !PyUnicode_Check(privateobj) || |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 229 | PyUnicode_READ_CHAR(ident, 0) != '_' || |
| 230 | PyUnicode_READ_CHAR(ident, 1) != '_') { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 231 | Py_INCREF(ident); |
| 232 | return ident; |
| 233 | } |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 234 | nlen = PyUnicode_GET_LENGTH(ident); |
| 235 | plen = PyUnicode_GET_LENGTH(privateobj); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 236 | /* Don't mangle __id__ or names with dots. |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 237 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 238 | The only time a name with a dot can occur is when |
| 239 | we are compiling an import statement that has a |
| 240 | package name. |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 241 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 242 | TODO(jhylton): Decide whether we want to support |
| 243 | mangling of the module name, e.g. __M.X. |
| 244 | */ |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 245 | if ((PyUnicode_READ_CHAR(ident, nlen-1) == '_' && |
| 246 | PyUnicode_READ_CHAR(ident, nlen-2) == '_') || |
| 247 | PyUnicode_FindChar(ident, '.', 0, nlen, 1) != -1) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 248 | Py_INCREF(ident); |
| 249 | return ident; /* Don't mangle __whatever__ */ |
| 250 | } |
| 251 | /* Strip leading underscores from class name */ |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 252 | ipriv = 0; |
| 253 | while (PyUnicode_READ_CHAR(privateobj, ipriv) == '_') |
| 254 | ipriv++; |
| 255 | if (ipriv == plen) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 256 | Py_INCREF(ident); |
| 257 | return ident; /* Don't mangle if class is just underscores */ |
| 258 | } |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 259 | plen -= ipriv; |
Amaury Forgeot d'Arc | 9c74b14 | 2008-06-18 00:47:36 +0000 | [diff] [blame] | 260 | |
Antoine Pitrou | 55bff89 | 2013-04-06 21:21:04 +0200 | [diff] [blame] | 261 | if (plen + nlen >= PY_SSIZE_T_MAX - 1) { |
| 262 | PyErr_SetString(PyExc_OverflowError, |
| 263 | "private identifier too large to be mangled"); |
| 264 | return NULL; |
| 265 | } |
Amaury Forgeot d'Arc | 9c74b14 | 2008-06-18 00:47:36 +0000 | [diff] [blame] | 266 | |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 267 | maxchar = PyUnicode_MAX_CHAR_VALUE(ident); |
| 268 | if (PyUnicode_MAX_CHAR_VALUE(privateobj) > maxchar) |
| 269 | maxchar = PyUnicode_MAX_CHAR_VALUE(privateobj); |
| 270 | |
| 271 | result = PyUnicode_New(1 + nlen + plen, maxchar); |
| 272 | if (!result) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 273 | return 0; |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 274 | /* ident = "_" + priv[ipriv:] + ident # i.e. 1+plen+nlen bytes */ |
| 275 | PyUnicode_WRITE(PyUnicode_KIND(result), PyUnicode_DATA(result), 0, '_'); |
Victor Stinner | 6c7a52a | 2011-09-28 21:39:17 +0200 | [diff] [blame] | 276 | if (PyUnicode_CopyCharacters(result, 1, privateobj, ipriv, plen) < 0) { |
| 277 | Py_DECREF(result); |
| 278 | return NULL; |
| 279 | } |
| 280 | if (PyUnicode_CopyCharacters(result, plen+1, ident, 0, nlen) < 0) { |
| 281 | Py_DECREF(result); |
| 282 | return NULL; |
| 283 | } |
Victor Stinner | 8f82506 | 2012-04-27 13:55:39 +0200 | [diff] [blame] | 284 | assert(_PyUnicode_CheckConsistency(result, 1)); |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 285 | return result; |
Michael W. Hudson | 6093462 | 2004-08-12 17:56:29 +0000 | [diff] [blame] | 286 | } |
| 287 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 288 | static int |
| 289 | compiler_init(struct compiler *c) |
Guido van Rossum | bea18cc | 2002-06-14 20:41:17 +0000 | [diff] [blame] | 290 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 291 | memset(c, 0, sizeof(struct compiler)); |
Guido van Rossum | bea18cc | 2002-06-14 20:41:17 +0000 | [diff] [blame] | 292 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 293 | c->c_stack = PyList_New(0); |
| 294 | if (!c->c_stack) |
| 295 | return 0; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 296 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 297 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 298 | } |
| 299 | |
| 300 | PyCodeObject * |
Victor Stinner | 14e461d | 2013-08-26 22:28:21 +0200 | [diff] [blame] | 301 | PyAST_CompileObject(mod_ty mod, PyObject *filename, PyCompilerFlags *flags, |
| 302 | int optimize, PyArena *arena) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 303 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 304 | struct compiler c; |
| 305 | PyCodeObject *co = NULL; |
| 306 | PyCompilerFlags local_flags; |
| 307 | int merged; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 308 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 309 | if (!__doc__) { |
| 310 | __doc__ = PyUnicode_InternFromString("__doc__"); |
| 311 | if (!__doc__) |
| 312 | return NULL; |
| 313 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 314 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 315 | if (!compiler_init(&c)) |
| 316 | return NULL; |
Victor Stinner | 14e461d | 2013-08-26 22:28:21 +0200 | [diff] [blame] | 317 | Py_INCREF(filename); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 318 | c.c_filename = filename; |
| 319 | c.c_arena = arena; |
Victor Stinner | 14e461d | 2013-08-26 22:28:21 +0200 | [diff] [blame] | 320 | c.c_future = PyFuture_FromASTObject(mod, filename); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 321 | if (c.c_future == NULL) |
| 322 | goto finally; |
| 323 | if (!flags) { |
| 324 | local_flags.cf_flags = 0; |
| 325 | flags = &local_flags; |
| 326 | } |
| 327 | merged = c.c_future->ff_features | flags->cf_flags; |
| 328 | c.c_future->ff_features = merged; |
| 329 | flags->cf_flags = merged; |
| 330 | c.c_flags = flags; |
Georg Brandl | 8334fd9 | 2010-12-04 10:26:46 +0000 | [diff] [blame] | 331 | c.c_optimize = (optimize == -1) ? Py_OptimizeFlag : optimize; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 332 | c.c_nestlevel = 0; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 333 | |
Victor Stinner | 14e461d | 2013-08-26 22:28:21 +0200 | [diff] [blame] | 334 | c.c_st = PySymtable_BuildObject(mod, filename, c.c_future); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 335 | if (c.c_st == NULL) { |
| 336 | if (!PyErr_Occurred()) |
| 337 | PyErr_SetString(PyExc_SystemError, "no symtable"); |
| 338 | goto finally; |
| 339 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 340 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 341 | co = compiler_mod(&c, mod); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 342 | |
Thomas Wouters | 1175c43 | 2006-02-27 22:49:54 +0000 | [diff] [blame] | 343 | finally: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 344 | compiler_free(&c); |
| 345 | assert(co || PyErr_Occurred()); |
| 346 | return co; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 347 | } |
| 348 | |
| 349 | PyCodeObject * |
Victor Stinner | 14e461d | 2013-08-26 22:28:21 +0200 | [diff] [blame] | 350 | PyAST_CompileEx(mod_ty mod, const char *filename_str, PyCompilerFlags *flags, |
| 351 | int optimize, PyArena *arena) |
| 352 | { |
| 353 | PyObject *filename; |
| 354 | PyCodeObject *co; |
| 355 | filename = PyUnicode_DecodeFSDefault(filename_str); |
| 356 | if (filename == NULL) |
| 357 | return NULL; |
| 358 | co = PyAST_CompileObject(mod, filename, flags, optimize, arena); |
| 359 | Py_DECREF(filename); |
| 360 | return co; |
| 361 | |
| 362 | } |
| 363 | |
| 364 | PyCodeObject * |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 365 | PyNode_Compile(struct _node *n, const char *filename) |
| 366 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 367 | PyCodeObject *co = NULL; |
| 368 | mod_ty mod; |
| 369 | PyArena *arena = PyArena_New(); |
| 370 | if (!arena) |
| 371 | return NULL; |
| 372 | mod = PyAST_FromNode(n, NULL, filename, arena); |
| 373 | if (mod) |
| 374 | co = PyAST_Compile(mod, filename, NULL, arena); |
| 375 | PyArena_Free(arena); |
| 376 | return co; |
Guido van Rossum | bea18cc | 2002-06-14 20:41:17 +0000 | [diff] [blame] | 377 | } |
| 378 | |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 379 | static void |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 380 | compiler_free(struct compiler *c) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 381 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 382 | if (c->c_st) |
| 383 | PySymtable_Free(c->c_st); |
| 384 | if (c->c_future) |
| 385 | PyObject_Free(c->c_future); |
Victor Stinner | 14e461d | 2013-08-26 22:28:21 +0200 | [diff] [blame] | 386 | Py_XDECREF(c->c_filename); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 387 | Py_DECREF(c->c_stack); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 388 | } |
| 389 | |
Guido van Rossum | 79f25d9 | 1997-04-29 20:08:16 +0000 | [diff] [blame] | 390 | static PyObject * |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 391 | list2dict(PyObject *list) |
Guido van Rossum | 2dff991 | 1992-09-03 20:50:59 +0000 | [diff] [blame] | 392 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 393 | Py_ssize_t i, n; |
| 394 | PyObject *v, *k; |
| 395 | PyObject *dict = PyDict_New(); |
| 396 | if (!dict) return NULL; |
Guido van Rossum | d076c73 | 1998-10-07 19:42:25 +0000 | [diff] [blame] | 397 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 398 | n = PyList_Size(list); |
| 399 | for (i = 0; i < n; i++) { |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 400 | v = PyLong_FromSsize_t(i); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 401 | if (!v) { |
| 402 | Py_DECREF(dict); |
| 403 | return NULL; |
| 404 | } |
| 405 | k = PyList_GET_ITEM(list, i); |
Victor Stinner | efb2413 | 2016-01-22 12:33:12 +0100 | [diff] [blame] | 406 | k = _PyCode_ConstantKey(k); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 407 | if (k == NULL || PyDict_SetItem(dict, k, v) < 0) { |
| 408 | Py_XDECREF(k); |
| 409 | Py_DECREF(v); |
| 410 | Py_DECREF(dict); |
| 411 | return NULL; |
| 412 | } |
| 413 | Py_DECREF(k); |
| 414 | Py_DECREF(v); |
| 415 | } |
| 416 | return dict; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 417 | } |
| 418 | |
| 419 | /* Return new dict containing names from src that match scope(s). |
| 420 | |
Jeremy Hylton | e9357b2 | 2006-03-01 15:47:05 +0000 | [diff] [blame] | 421 | src is a symbol table dictionary. If the scope of a name matches |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 422 | either scope_type or flag is set, insert it into the new dict. The |
Jeremy Hylton | e9357b2 | 2006-03-01 15:47:05 +0000 | [diff] [blame] | 423 | values are integers, starting at offset and increasing by one for |
| 424 | each key. |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 425 | */ |
| 426 | |
| 427 | static PyObject * |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 428 | dictbytype(PyObject *src, int scope_type, int flag, Py_ssize_t offset) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 429 | { |
Benjamin Peterson | 51ab283 | 2012-07-18 15:12:47 -0700 | [diff] [blame] | 430 | Py_ssize_t i = offset, scope, num_keys, key_i; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 431 | PyObject *k, *v, *dest = PyDict_New(); |
Meador Inge | 2ca6315 | 2012-07-18 14:20:11 -0500 | [diff] [blame] | 432 | PyObject *sorted_keys; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 433 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 434 | assert(offset >= 0); |
| 435 | if (dest == NULL) |
| 436 | return NULL; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 437 | |
Meador Inge | 2ca6315 | 2012-07-18 14:20:11 -0500 | [diff] [blame] | 438 | /* Sort the keys so that we have a deterministic order on the indexes |
| 439 | saved in the returned dictionary. These indexes are used as indexes |
| 440 | into the free and cell var storage. Therefore if they aren't |
| 441 | deterministic, then the generated bytecode is not deterministic. |
| 442 | */ |
| 443 | sorted_keys = PyDict_Keys(src); |
| 444 | if (sorted_keys == NULL) |
| 445 | return NULL; |
| 446 | if (PyList_Sort(sorted_keys) != 0) { |
| 447 | Py_DECREF(sorted_keys); |
| 448 | return NULL; |
| 449 | } |
Meador Inge | f69e24e | 2012-07-18 16:41:03 -0500 | [diff] [blame] | 450 | num_keys = PyList_GET_SIZE(sorted_keys); |
Meador Inge | 2ca6315 | 2012-07-18 14:20:11 -0500 | [diff] [blame] | 451 | |
| 452 | for (key_i = 0; key_i < num_keys; key_i++) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 453 | /* XXX this should probably be a macro in symtable.h */ |
| 454 | long vi; |
Meador Inge | 2ca6315 | 2012-07-18 14:20:11 -0500 | [diff] [blame] | 455 | k = PyList_GET_ITEM(sorted_keys, key_i); |
| 456 | v = PyDict_GetItem(src, k); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 457 | assert(PyLong_Check(v)); |
| 458 | vi = PyLong_AS_LONG(v); |
| 459 | scope = (vi >> SCOPE_OFFSET) & SCOPE_MASK; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 460 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 461 | if (scope == scope_type || vi & flag) { |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 462 | PyObject *tuple, *item = PyLong_FromSsize_t(i); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 463 | if (item == NULL) { |
Meador Inge | 2ca6315 | 2012-07-18 14:20:11 -0500 | [diff] [blame] | 464 | Py_DECREF(sorted_keys); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 465 | Py_DECREF(dest); |
| 466 | return NULL; |
| 467 | } |
| 468 | i++; |
Victor Stinner | efb2413 | 2016-01-22 12:33:12 +0100 | [diff] [blame] | 469 | tuple = _PyCode_ConstantKey(k); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 470 | if (!tuple || PyDict_SetItem(dest, tuple, item) < 0) { |
Meador Inge | 2ca6315 | 2012-07-18 14:20:11 -0500 | [diff] [blame] | 471 | Py_DECREF(sorted_keys); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 472 | Py_DECREF(item); |
| 473 | Py_DECREF(dest); |
| 474 | Py_XDECREF(tuple); |
| 475 | return NULL; |
| 476 | } |
| 477 | Py_DECREF(item); |
| 478 | Py_DECREF(tuple); |
| 479 | } |
| 480 | } |
Meador Inge | 2ca6315 | 2012-07-18 14:20:11 -0500 | [diff] [blame] | 481 | Py_DECREF(sorted_keys); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 482 | return dest; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 483 | } |
| 484 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 485 | static void |
| 486 | compiler_unit_check(struct compiler_unit *u) |
| 487 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 488 | basicblock *block; |
| 489 | for (block = u->u_blocks; block != NULL; block = block->b_list) { |
Benjamin Peterson | ca47063 | 2016-09-06 13:47:26 -0700 | [diff] [blame] | 490 | assert((uintptr_t)block != 0xcbcbcbcbU); |
| 491 | assert((uintptr_t)block != 0xfbfbfbfbU); |
| 492 | assert((uintptr_t)block != 0xdbdbdbdbU); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 493 | if (block->b_instr != NULL) { |
| 494 | assert(block->b_ialloc > 0); |
| 495 | assert(block->b_iused > 0); |
| 496 | assert(block->b_ialloc >= block->b_iused); |
| 497 | } |
| 498 | else { |
| 499 | assert (block->b_iused == 0); |
| 500 | assert (block->b_ialloc == 0); |
| 501 | } |
| 502 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 503 | } |
| 504 | |
| 505 | static void |
| 506 | compiler_unit_free(struct compiler_unit *u) |
| 507 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 508 | basicblock *b, *next; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 509 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 510 | compiler_unit_check(u); |
| 511 | b = u->u_blocks; |
| 512 | while (b != NULL) { |
| 513 | if (b->b_instr) |
| 514 | PyObject_Free((void *)b->b_instr); |
| 515 | next = b->b_list; |
| 516 | PyObject_Free((void *)b); |
| 517 | b = next; |
| 518 | } |
| 519 | Py_CLEAR(u->u_ste); |
| 520 | Py_CLEAR(u->u_name); |
Benjamin Peterson | 6b4f780 | 2013-10-20 17:50:28 -0400 | [diff] [blame] | 521 | Py_CLEAR(u->u_qualname); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 522 | Py_CLEAR(u->u_consts); |
| 523 | Py_CLEAR(u->u_names); |
| 524 | Py_CLEAR(u->u_varnames); |
| 525 | Py_CLEAR(u->u_freevars); |
| 526 | Py_CLEAR(u->u_cellvars); |
| 527 | Py_CLEAR(u->u_private); |
| 528 | PyObject_Free(u); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 529 | } |
| 530 | |
| 531 | static int |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 532 | compiler_enter_scope(struct compiler *c, identifier name, |
| 533 | int scope_type, void *key, int lineno) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 534 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 535 | struct compiler_unit *u; |
Victor Stinner | fc6f2ef | 2016-02-27 02:19:22 +0100 | [diff] [blame] | 536 | basicblock *block; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 537 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 538 | u = (struct compiler_unit *)PyObject_Malloc(sizeof( |
| 539 | struct compiler_unit)); |
| 540 | if (!u) { |
| 541 | PyErr_NoMemory(); |
| 542 | return 0; |
| 543 | } |
| 544 | memset(u, 0, sizeof(struct compiler_unit)); |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 545 | u->u_scope_type = scope_type; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 546 | u->u_argcount = 0; |
| 547 | u->u_kwonlyargcount = 0; |
| 548 | u->u_ste = PySymtable_Lookup(c->c_st, key); |
| 549 | if (!u->u_ste) { |
| 550 | compiler_unit_free(u); |
| 551 | return 0; |
| 552 | } |
| 553 | Py_INCREF(name); |
| 554 | u->u_name = name; |
| 555 | u->u_varnames = list2dict(u->u_ste->ste_varnames); |
| 556 | u->u_cellvars = dictbytype(u->u_ste->ste_symbols, CELL, 0, 0); |
| 557 | if (!u->u_varnames || !u->u_cellvars) { |
| 558 | compiler_unit_free(u); |
| 559 | return 0; |
| 560 | } |
Benjamin Peterson | 312595c | 2013-05-15 15:26:42 -0500 | [diff] [blame] | 561 | if (u->u_ste->ste_needs_class_closure) { |
Martin Panter | 7462b649 | 2015-11-02 03:37:02 +0000 | [diff] [blame] | 562 | /* Cook up an implicit __class__ cell. */ |
Benjamin Peterson | 312595c | 2013-05-15 15:26:42 -0500 | [diff] [blame] | 563 | _Py_IDENTIFIER(__class__); |
Serhiy Storchaka | ba85d69 | 2017-03-30 09:09:41 +0300 | [diff] [blame] | 564 | PyObject *tuple, *name; |
Benjamin Peterson | 312595c | 2013-05-15 15:26:42 -0500 | [diff] [blame] | 565 | int res; |
| 566 | assert(u->u_scope_type == COMPILER_SCOPE_CLASS); |
Serhiy Storchaka | 5ab81d7 | 2016-12-16 16:18:57 +0200 | [diff] [blame] | 567 | assert(PyDict_GET_SIZE(u->u_cellvars) == 0); |
Benjamin Peterson | 312595c | 2013-05-15 15:26:42 -0500 | [diff] [blame] | 568 | name = _PyUnicode_FromId(&PyId___class__); |
| 569 | if (!name) { |
| 570 | compiler_unit_free(u); |
| 571 | return 0; |
| 572 | } |
Victor Stinner | efb2413 | 2016-01-22 12:33:12 +0100 | [diff] [blame] | 573 | tuple = _PyCode_ConstantKey(name); |
Benjamin Peterson | 312595c | 2013-05-15 15:26:42 -0500 | [diff] [blame] | 574 | if (!tuple) { |
| 575 | compiler_unit_free(u); |
| 576 | return 0; |
| 577 | } |
Serhiy Storchaka | ba85d69 | 2017-03-30 09:09:41 +0300 | [diff] [blame] | 578 | res = PyDict_SetItem(u->u_cellvars, tuple, _PyLong_Zero); |
Benjamin Peterson | 312595c | 2013-05-15 15:26:42 -0500 | [diff] [blame] | 579 | Py_DECREF(tuple); |
Benjamin Peterson | 312595c | 2013-05-15 15:26:42 -0500 | [diff] [blame] | 580 | if (res < 0) { |
| 581 | compiler_unit_free(u); |
| 582 | return 0; |
| 583 | } |
| 584 | } |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 585 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 586 | u->u_freevars = dictbytype(u->u_ste->ste_symbols, FREE, DEF_FREE_CLASS, |
Serhiy Storchaka | 5ab81d7 | 2016-12-16 16:18:57 +0200 | [diff] [blame] | 587 | PyDict_GET_SIZE(u->u_cellvars)); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 588 | if (!u->u_freevars) { |
| 589 | compiler_unit_free(u); |
| 590 | return 0; |
| 591 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 592 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 593 | u->u_blocks = NULL; |
| 594 | u->u_nfblocks = 0; |
| 595 | u->u_firstlineno = lineno; |
| 596 | u->u_lineno = 0; |
Benjamin Peterson | d4efd9e | 2010-09-20 23:02:10 +0000 | [diff] [blame] | 597 | u->u_col_offset = 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 598 | u->u_lineno_set = 0; |
| 599 | u->u_consts = PyDict_New(); |
| 600 | if (!u->u_consts) { |
| 601 | compiler_unit_free(u); |
| 602 | return 0; |
| 603 | } |
| 604 | u->u_names = PyDict_New(); |
| 605 | if (!u->u_names) { |
| 606 | compiler_unit_free(u); |
| 607 | return 0; |
| 608 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 609 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 610 | u->u_private = NULL; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 611 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 612 | /* Push the old compiler_unit on the stack. */ |
| 613 | if (c->u) { |
Benjamin Peterson | 9e77f72 | 2015-05-07 18:41:47 -0400 | [diff] [blame] | 614 | PyObject *capsule = PyCapsule_New(c->u, CAPSULE_NAME, NULL); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 615 | if (!capsule || PyList_Append(c->c_stack, capsule) < 0) { |
| 616 | Py_XDECREF(capsule); |
| 617 | compiler_unit_free(u); |
| 618 | return 0; |
| 619 | } |
| 620 | Py_DECREF(capsule); |
| 621 | u->u_private = c->u->u_private; |
| 622 | Py_XINCREF(u->u_private); |
| 623 | } |
| 624 | c->u = u; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 625 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 626 | c->c_nestlevel++; |
Victor Stinner | fc6f2ef | 2016-02-27 02:19:22 +0100 | [diff] [blame] | 627 | |
| 628 | block = compiler_new_block(c); |
| 629 | if (block == NULL) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 630 | return 0; |
Victor Stinner | fc6f2ef | 2016-02-27 02:19:22 +0100 | [diff] [blame] | 631 | c->u->u_curblock = block; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 632 | |
Benjamin Peterson | 6b4f780 | 2013-10-20 17:50:28 -0400 | [diff] [blame] | 633 | if (u->u_scope_type != COMPILER_SCOPE_MODULE) { |
| 634 | if (!compiler_set_qualname(c)) |
| 635 | return 0; |
| 636 | } |
| 637 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 638 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 639 | } |
| 640 | |
Neil Schemenauer | c396d9e | 2005-10-25 06:30:14 +0000 | [diff] [blame] | 641 | static void |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 642 | compiler_exit_scope(struct compiler *c) |
| 643 | { |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 644 | Py_ssize_t n; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 645 | PyObject *capsule; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 646 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 647 | c->c_nestlevel--; |
| 648 | compiler_unit_free(c->u); |
| 649 | /* Restore c->u to the parent unit. */ |
| 650 | n = PyList_GET_SIZE(c->c_stack) - 1; |
| 651 | if (n >= 0) { |
| 652 | capsule = PyList_GET_ITEM(c->c_stack, n); |
Benjamin Peterson | 9e77f72 | 2015-05-07 18:41:47 -0400 | [diff] [blame] | 653 | c->u = (struct compiler_unit *)PyCapsule_GetPointer(capsule, CAPSULE_NAME); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 654 | assert(c->u); |
| 655 | /* we are deleting from a list so this really shouldn't fail */ |
| 656 | if (PySequence_DelItem(c->c_stack, n) < 0) |
| 657 | Py_FatalError("compiler_exit_scope()"); |
| 658 | compiler_unit_check(c->u); |
| 659 | } |
| 660 | else |
| 661 | c->u = NULL; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 662 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 663 | } |
| 664 | |
Benjamin Peterson | 6b4f780 | 2013-10-20 17:50:28 -0400 | [diff] [blame] | 665 | static int |
| 666 | compiler_set_qualname(struct compiler *c) |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 667 | { |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 668 | _Py_static_string(dot, "."); |
Benjamin Peterson | 6b4f780 | 2013-10-20 17:50:28 -0400 | [diff] [blame] | 669 | _Py_static_string(dot_locals, ".<locals>"); |
| 670 | Py_ssize_t stack_size; |
| 671 | struct compiler_unit *u = c->u; |
| 672 | PyObject *name, *base, *dot_str, *dot_locals_str; |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 673 | |
Benjamin Peterson | 6b4f780 | 2013-10-20 17:50:28 -0400 | [diff] [blame] | 674 | base = NULL; |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 675 | stack_size = PyList_GET_SIZE(c->c_stack); |
Benjamin Peterson | a8a38b8 | 2013-10-19 16:14:39 -0400 | [diff] [blame] | 676 | assert(stack_size >= 1); |
Benjamin Peterson | 6b4f780 | 2013-10-20 17:50:28 -0400 | [diff] [blame] | 677 | if (stack_size > 1) { |
| 678 | int scope, force_global = 0; |
| 679 | struct compiler_unit *parent; |
| 680 | PyObject *mangled, *capsule; |
| 681 | |
Benjamin Peterson | 3d9e481 | 2013-10-19 16:01:13 -0400 | [diff] [blame] | 682 | capsule = PyList_GET_ITEM(c->c_stack, stack_size - 1); |
Benjamin Peterson | 9e77f72 | 2015-05-07 18:41:47 -0400 | [diff] [blame] | 683 | parent = (struct compiler_unit *)PyCapsule_GetPointer(capsule, CAPSULE_NAME); |
Benjamin Peterson | 6b4f780 | 2013-10-20 17:50:28 -0400 | [diff] [blame] | 684 | assert(parent); |
| 685 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 686 | if (u->u_scope_type == COMPILER_SCOPE_FUNCTION |
| 687 | || u->u_scope_type == COMPILER_SCOPE_ASYNC_FUNCTION |
| 688 | || u->u_scope_type == COMPILER_SCOPE_CLASS) { |
Benjamin Peterson | 6b4f780 | 2013-10-20 17:50:28 -0400 | [diff] [blame] | 689 | assert(u->u_name); |
| 690 | mangled = _Py_Mangle(parent->u_private, u->u_name); |
| 691 | if (!mangled) |
| 692 | return 0; |
| 693 | scope = PyST_GetScope(parent->u_ste, mangled); |
| 694 | Py_DECREF(mangled); |
| 695 | assert(scope != GLOBAL_IMPLICIT); |
| 696 | if (scope == GLOBAL_EXPLICIT) |
| 697 | force_global = 1; |
| 698 | } |
| 699 | |
| 700 | if (!force_global) { |
| 701 | if (parent->u_scope_type == COMPILER_SCOPE_FUNCTION |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 702 | || parent->u_scope_type == COMPILER_SCOPE_ASYNC_FUNCTION |
Benjamin Peterson | 6b4f780 | 2013-10-20 17:50:28 -0400 | [diff] [blame] | 703 | || parent->u_scope_type == COMPILER_SCOPE_LAMBDA) { |
| 704 | dot_locals_str = _PyUnicode_FromId(&dot_locals); |
| 705 | if (dot_locals_str == NULL) |
| 706 | return 0; |
| 707 | base = PyUnicode_Concat(parent->u_qualname, dot_locals_str); |
| 708 | if (base == NULL) |
| 709 | return 0; |
| 710 | } |
| 711 | else { |
| 712 | Py_INCREF(parent->u_qualname); |
| 713 | base = parent->u_qualname; |
Benjamin Peterson | 3d9e481 | 2013-10-19 16:01:13 -0400 | [diff] [blame] | 714 | } |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 715 | } |
| 716 | } |
Benjamin Peterson | 3d9e481 | 2013-10-19 16:01:13 -0400 | [diff] [blame] | 717 | |
Benjamin Peterson | 6b4f780 | 2013-10-20 17:50:28 -0400 | [diff] [blame] | 718 | if (base != NULL) { |
| 719 | dot_str = _PyUnicode_FromId(&dot); |
| 720 | if (dot_str == NULL) { |
| 721 | Py_DECREF(base); |
| 722 | return 0; |
| 723 | } |
| 724 | name = PyUnicode_Concat(base, dot_str); |
| 725 | Py_DECREF(base); |
| 726 | if (name == NULL) |
| 727 | return 0; |
| 728 | PyUnicode_Append(&name, u->u_name); |
| 729 | if (name == NULL) |
| 730 | return 0; |
| 731 | } |
| 732 | else { |
| 733 | Py_INCREF(u->u_name); |
| 734 | name = u->u_name; |
| 735 | } |
| 736 | u->u_qualname = name; |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 737 | |
Benjamin Peterson | 6b4f780 | 2013-10-20 17:50:28 -0400 | [diff] [blame] | 738 | return 1; |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 739 | } |
| 740 | |
Eric V. Smith | 235a6f0 | 2015-09-19 14:51:32 -0400 | [diff] [blame] | 741 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 742 | /* Allocate a new block and return a pointer to it. |
| 743 | Returns NULL on error. |
| 744 | */ |
| 745 | |
| 746 | static basicblock * |
| 747 | compiler_new_block(struct compiler *c) |
| 748 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 749 | basicblock *b; |
| 750 | struct compiler_unit *u; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 751 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 752 | u = c->u; |
| 753 | b = (basicblock *)PyObject_Malloc(sizeof(basicblock)); |
| 754 | if (b == NULL) { |
| 755 | PyErr_NoMemory(); |
| 756 | return NULL; |
| 757 | } |
| 758 | memset((void *)b, 0, sizeof(basicblock)); |
| 759 | /* Extend the singly linked list of blocks with new block. */ |
| 760 | b->b_list = u->u_blocks; |
| 761 | u->u_blocks = b; |
| 762 | return b; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 763 | } |
| 764 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 765 | static basicblock * |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 766 | compiler_next_block(struct compiler *c) |
| 767 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 768 | basicblock *block = compiler_new_block(c); |
| 769 | if (block == NULL) |
| 770 | return NULL; |
| 771 | c->u->u_curblock->b_next = block; |
| 772 | c->u->u_curblock = block; |
| 773 | return block; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 774 | } |
| 775 | |
| 776 | static basicblock * |
| 777 | compiler_use_next_block(struct compiler *c, basicblock *block) |
| 778 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 779 | assert(block != NULL); |
| 780 | c->u->u_curblock->b_next = block; |
| 781 | c->u->u_curblock = block; |
| 782 | return block; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 783 | } |
| 784 | |
| 785 | /* Returns the offset of the next instruction in the current block's |
| 786 | b_instr array. Resizes the b_instr as necessary. |
| 787 | Returns -1 on failure. |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 788 | */ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 789 | |
| 790 | static int |
| 791 | compiler_next_instr(struct compiler *c, basicblock *b) |
| 792 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 793 | assert(b != NULL); |
| 794 | if (b->b_instr == NULL) { |
| 795 | b->b_instr = (struct instr *)PyObject_Malloc( |
| 796 | sizeof(struct instr) * DEFAULT_BLOCK_SIZE); |
| 797 | if (b->b_instr == NULL) { |
| 798 | PyErr_NoMemory(); |
| 799 | return -1; |
| 800 | } |
| 801 | b->b_ialloc = DEFAULT_BLOCK_SIZE; |
| 802 | memset((char *)b->b_instr, 0, |
| 803 | sizeof(struct instr) * DEFAULT_BLOCK_SIZE); |
| 804 | } |
| 805 | else if (b->b_iused == b->b_ialloc) { |
| 806 | struct instr *tmp; |
| 807 | size_t oldsize, newsize; |
| 808 | oldsize = b->b_ialloc * sizeof(struct instr); |
| 809 | newsize = oldsize << 1; |
Amaury Forgeot d'Arc | 9c74b14 | 2008-06-18 00:47:36 +0000 | [diff] [blame] | 810 | |
Benjamin Peterson | 2f8bfef | 2016-09-07 09:26:18 -0700 | [diff] [blame] | 811 | if (oldsize > (SIZE_MAX >> 1)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 812 | PyErr_NoMemory(); |
| 813 | return -1; |
| 814 | } |
Amaury Forgeot d'Arc | 9c74b14 | 2008-06-18 00:47:36 +0000 | [diff] [blame] | 815 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 816 | if (newsize == 0) { |
| 817 | PyErr_NoMemory(); |
| 818 | return -1; |
| 819 | } |
| 820 | b->b_ialloc <<= 1; |
| 821 | tmp = (struct instr *)PyObject_Realloc( |
| 822 | (void *)b->b_instr, newsize); |
| 823 | if (tmp == NULL) { |
| 824 | PyErr_NoMemory(); |
| 825 | return -1; |
| 826 | } |
| 827 | b->b_instr = tmp; |
| 828 | memset((char *)b->b_instr + oldsize, 0, newsize - oldsize); |
| 829 | } |
| 830 | return b->b_iused++; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 831 | } |
| 832 | |
Christian Heimes | 2202f87 | 2008-02-06 14:31:34 +0000 | [diff] [blame] | 833 | /* Set the i_lineno member of the instruction at offset off if the |
| 834 | line number for the current expression/statement has not |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 835 | already been set. If it has been set, the call has no effect. |
| 836 | |
Christian Heimes | 2202f87 | 2008-02-06 14:31:34 +0000 | [diff] [blame] | 837 | The line number is reset in the following cases: |
| 838 | - when entering a new scope |
| 839 | - on each statement |
| 840 | - on each expression that start a new line |
| 841 | - before the "except" clause |
| 842 | - before the "for" and "while" expressions |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 843 | */ |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 844 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 845 | static void |
| 846 | compiler_set_lineno(struct compiler *c, int off) |
| 847 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 848 | basicblock *b; |
| 849 | if (c->u->u_lineno_set) |
| 850 | return; |
| 851 | c->u->u_lineno_set = 1; |
| 852 | b = c->u->u_curblock; |
| 853 | b->b_instr[off].i_lineno = c->u->u_lineno; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 854 | } |
| 855 | |
Larry Hastings | 3a90797 | 2013-11-23 14:49:22 -0800 | [diff] [blame] | 856 | int |
| 857 | PyCompile_OpcodeStackEffect(int opcode, int oparg) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 858 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 859 | switch (opcode) { |
| 860 | case POP_TOP: |
| 861 | return -1; |
| 862 | case ROT_TWO: |
| 863 | case ROT_THREE: |
| 864 | return 0; |
| 865 | case DUP_TOP: |
| 866 | return 1; |
Antoine Pitrou | 74a69fa | 2010-09-04 18:43:52 +0000 | [diff] [blame] | 867 | case DUP_TOP_TWO: |
| 868 | return 2; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 869 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 870 | case UNARY_POSITIVE: |
| 871 | case UNARY_NEGATIVE: |
| 872 | case UNARY_NOT: |
| 873 | case UNARY_INVERT: |
| 874 | return 0; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 875 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 876 | case SET_ADD: |
| 877 | case LIST_APPEND: |
| 878 | return -1; |
| 879 | case MAP_ADD: |
| 880 | return -2; |
Neal Norwitz | 10be2ea | 2006-03-03 20:29:11 +0000 | [diff] [blame] | 881 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 882 | case BINARY_POWER: |
| 883 | case BINARY_MULTIPLY: |
Benjamin Peterson | d51374e | 2014-04-09 23:55:56 -0400 | [diff] [blame] | 884 | case BINARY_MATRIX_MULTIPLY: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 885 | case BINARY_MODULO: |
| 886 | case BINARY_ADD: |
| 887 | case BINARY_SUBTRACT: |
| 888 | case BINARY_SUBSCR: |
| 889 | case BINARY_FLOOR_DIVIDE: |
| 890 | case BINARY_TRUE_DIVIDE: |
| 891 | return -1; |
| 892 | case INPLACE_FLOOR_DIVIDE: |
| 893 | case INPLACE_TRUE_DIVIDE: |
| 894 | return -1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 895 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 896 | case INPLACE_ADD: |
| 897 | case INPLACE_SUBTRACT: |
| 898 | case INPLACE_MULTIPLY: |
Benjamin Peterson | d51374e | 2014-04-09 23:55:56 -0400 | [diff] [blame] | 899 | case INPLACE_MATRIX_MULTIPLY: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 900 | case INPLACE_MODULO: |
| 901 | return -1; |
| 902 | case STORE_SUBSCR: |
| 903 | return -3; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 904 | case DELETE_SUBSCR: |
| 905 | return -2; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 906 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 907 | case BINARY_LSHIFT: |
| 908 | case BINARY_RSHIFT: |
| 909 | case BINARY_AND: |
| 910 | case BINARY_XOR: |
| 911 | case BINARY_OR: |
| 912 | return -1; |
| 913 | case INPLACE_POWER: |
| 914 | return -1; |
| 915 | case GET_ITER: |
| 916 | return 0; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 917 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 918 | case PRINT_EXPR: |
| 919 | return -1; |
| 920 | case LOAD_BUILD_CLASS: |
| 921 | return 1; |
| 922 | case INPLACE_LSHIFT: |
| 923 | case INPLACE_RSHIFT: |
| 924 | case INPLACE_AND: |
| 925 | case INPLACE_XOR: |
| 926 | case INPLACE_OR: |
| 927 | return -1; |
| 928 | case BREAK_LOOP: |
| 929 | return 0; |
| 930 | case SETUP_WITH: |
| 931 | return 7; |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 932 | case WITH_CLEANUP_START: |
| 933 | return 1; |
| 934 | case WITH_CLEANUP_FINISH: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 935 | return -1; /* XXX Sometimes more */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 936 | case RETURN_VALUE: |
| 937 | return -1; |
| 938 | case IMPORT_STAR: |
| 939 | return -1; |
Yury Selivanov | f8cb8a1 | 2016-09-08 20:50:03 -0700 | [diff] [blame] | 940 | case SETUP_ANNOTATIONS: |
| 941 | return 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 942 | case YIELD_VALUE: |
| 943 | return 0; |
Benjamin Peterson | 2afe6ae | 2012-03-15 15:37:39 -0500 | [diff] [blame] | 944 | case YIELD_FROM: |
| 945 | return -1; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 946 | case POP_BLOCK: |
| 947 | return 0; |
| 948 | case POP_EXCEPT: |
| 949 | return 0; /* -3 except if bad bytecode */ |
| 950 | case END_FINALLY: |
| 951 | return -1; /* or -2 or -3 if exception occurred */ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 952 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 953 | case STORE_NAME: |
| 954 | return -1; |
| 955 | case DELETE_NAME: |
| 956 | return 0; |
| 957 | case UNPACK_SEQUENCE: |
| 958 | return oparg-1; |
| 959 | case UNPACK_EX: |
| 960 | return (oparg&0xFF) + (oparg>>8); |
| 961 | case FOR_ITER: |
| 962 | return 1; /* or -1, at end of iterator */ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 963 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 964 | case STORE_ATTR: |
| 965 | return -2; |
| 966 | case DELETE_ATTR: |
| 967 | return -1; |
| 968 | case STORE_GLOBAL: |
| 969 | return -1; |
| 970 | case DELETE_GLOBAL: |
| 971 | return 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 972 | case LOAD_CONST: |
| 973 | return 1; |
| 974 | case LOAD_NAME: |
| 975 | return 1; |
| 976 | case BUILD_TUPLE: |
| 977 | case BUILD_LIST: |
| 978 | case BUILD_SET: |
Serhiy Storchaka | ea525a2 | 2016-09-06 22:07:53 +0300 | [diff] [blame] | 979 | case BUILD_STRING: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 980 | return 1-oparg; |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 981 | case BUILD_LIST_UNPACK: |
| 982 | case BUILD_TUPLE_UNPACK: |
Serhiy Storchaka | 7344285 | 2016-10-02 10:33:46 +0300 | [diff] [blame] | 983 | case BUILD_TUPLE_UNPACK_WITH_CALL: |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 984 | case BUILD_SET_UNPACK: |
| 985 | case BUILD_MAP_UNPACK: |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 986 | case BUILD_MAP_UNPACK_WITH_CALL: |
Victor Stinner | f9b760f | 2016-09-09 10:17:08 -0700 | [diff] [blame] | 987 | return 1 - oparg; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 988 | case BUILD_MAP: |
Benjamin Peterson | b685515 | 2015-09-10 21:02:39 -0700 | [diff] [blame] | 989 | return 1 - 2*oparg; |
Serhiy Storchaka | 6a7506a | 2016-06-12 00:39:41 +0300 | [diff] [blame] | 990 | case BUILD_CONST_KEY_MAP: |
| 991 | return -oparg; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 992 | case LOAD_ATTR: |
| 993 | return 0; |
| 994 | case COMPARE_OP: |
| 995 | return -1; |
| 996 | case IMPORT_NAME: |
| 997 | return -1; |
| 998 | case IMPORT_FROM: |
| 999 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1000 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1001 | case JUMP_FORWARD: |
| 1002 | case JUMP_IF_TRUE_OR_POP: /* -1 if jump not taken */ |
| 1003 | case JUMP_IF_FALSE_OR_POP: /* "" */ |
| 1004 | case JUMP_ABSOLUTE: |
| 1005 | return 0; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1006 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1007 | case POP_JUMP_IF_FALSE: |
| 1008 | case POP_JUMP_IF_TRUE: |
| 1009 | return -1; |
Jeffrey Yasskin | 9de7ec7 | 2009-02-25 02:25:04 +0000 | [diff] [blame] | 1010 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1011 | case LOAD_GLOBAL: |
| 1012 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1013 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1014 | case CONTINUE_LOOP: |
| 1015 | return 0; |
| 1016 | case SETUP_LOOP: |
| 1017 | return 0; |
| 1018 | case SETUP_EXCEPT: |
| 1019 | case SETUP_FINALLY: |
| 1020 | return 6; /* can push 3 values for the new exception |
| 1021 | + 3 others for the previous exception state */ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1022 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1023 | case LOAD_FAST: |
| 1024 | return 1; |
| 1025 | case STORE_FAST: |
| 1026 | return -1; |
| 1027 | case DELETE_FAST: |
| 1028 | return 0; |
Yury Selivanov | f8cb8a1 | 2016-09-08 20:50:03 -0700 | [diff] [blame] | 1029 | case STORE_ANNOTATION: |
| 1030 | return -1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1031 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1032 | case RAISE_VARARGS: |
| 1033 | return -oparg; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1034 | case CALL_FUNCTION: |
Victor Stinner | f9b760f | 2016-09-09 10:17:08 -0700 | [diff] [blame] | 1035 | return -oparg; |
Yury Selivanov | f239213 | 2016-12-13 19:03:51 -0500 | [diff] [blame] | 1036 | case CALL_METHOD: |
| 1037 | return -oparg-1; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1038 | case CALL_FUNCTION_KW: |
Victor Stinner | f9b760f | 2016-09-09 10:17:08 -0700 | [diff] [blame] | 1039 | return -oparg-1; |
| 1040 | case CALL_FUNCTION_EX: |
Matthieu Dartiailh | 3a9ac82 | 2017-02-21 14:25:22 +0100 | [diff] [blame] | 1041 | return -1 - ((oparg & 0x01) != 0); |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1042 | case MAKE_FUNCTION: |
| 1043 | return -1 - ((oparg & 0x01) != 0) - ((oparg & 0x02) != 0) - |
| 1044 | ((oparg & 0x04) != 0) - ((oparg & 0x08) != 0); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1045 | case BUILD_SLICE: |
| 1046 | if (oparg == 3) |
| 1047 | return -2; |
| 1048 | else |
| 1049 | return -1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1050 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1051 | case LOAD_CLOSURE: |
| 1052 | return 1; |
| 1053 | case LOAD_DEREF: |
Benjamin Peterson | 3b0431d | 2013-04-30 09:41:40 -0400 | [diff] [blame] | 1054 | case LOAD_CLASSDEREF: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1055 | return 1; |
| 1056 | case STORE_DEREF: |
| 1057 | return -1; |
Amaury Forgeot d'Arc | ba117ef | 2010-09-10 21:39:53 +0000 | [diff] [blame] | 1058 | case DELETE_DEREF: |
| 1059 | return 0; |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1060 | case GET_AWAITABLE: |
| 1061 | return 0; |
| 1062 | case SETUP_ASYNC_WITH: |
| 1063 | return 6; |
| 1064 | case BEFORE_ASYNC_WITH: |
| 1065 | return 1; |
| 1066 | case GET_AITER: |
| 1067 | return 0; |
| 1068 | case GET_ANEXT: |
| 1069 | return 1; |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 1070 | case GET_YIELD_FROM_ITER: |
| 1071 | return 0; |
Eric V. Smith | a78c795 | 2015-11-03 12:45:05 -0500 | [diff] [blame] | 1072 | case FORMAT_VALUE: |
| 1073 | /* If there's a fmt_spec on the stack, we go from 2->1, |
| 1074 | else 1->1. */ |
| 1075 | return (oparg & FVS_MASK) == FVS_HAVE_SPEC ? -1 : 0; |
Yury Selivanov | f239213 | 2016-12-13 19:03:51 -0500 | [diff] [blame] | 1076 | case LOAD_METHOD: |
| 1077 | return 1; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1078 | default: |
Larry Hastings | 3a90797 | 2013-11-23 14:49:22 -0800 | [diff] [blame] | 1079 | return PY_INVALID_STACK_EFFECT; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1080 | } |
Larry Hastings | 3a90797 | 2013-11-23 14:49:22 -0800 | [diff] [blame] | 1081 | return PY_INVALID_STACK_EFFECT; /* not reachable */ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1082 | } |
| 1083 | |
| 1084 | /* Add an opcode with no argument. |
| 1085 | Returns 0 on failure, 1 on success. |
| 1086 | */ |
| 1087 | |
| 1088 | static int |
| 1089 | compiler_addop(struct compiler *c, int opcode) |
| 1090 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1091 | basicblock *b; |
| 1092 | struct instr *i; |
| 1093 | int off; |
Serhiy Storchaka | b0f80b0 | 2016-05-24 09:15:14 +0300 | [diff] [blame] | 1094 | assert(!HAS_ARG(opcode)); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1095 | off = compiler_next_instr(c, c->u->u_curblock); |
| 1096 | if (off < 0) |
| 1097 | return 0; |
| 1098 | b = c->u->u_curblock; |
| 1099 | i = &b->b_instr[off]; |
| 1100 | i->i_opcode = opcode; |
Serhiy Storchaka | b0f80b0 | 2016-05-24 09:15:14 +0300 | [diff] [blame] | 1101 | i->i_oparg = 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1102 | if (opcode == RETURN_VALUE) |
| 1103 | b->b_return = 1; |
| 1104 | compiler_set_lineno(c, off); |
| 1105 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1106 | } |
| 1107 | |
Victor Stinner | f8e3221 | 2013-11-19 23:56:34 +0100 | [diff] [blame] | 1108 | static Py_ssize_t |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1109 | compiler_add_o(struct compiler *c, PyObject *dict, PyObject *o) |
| 1110 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1111 | PyObject *t, *v; |
| 1112 | Py_ssize_t arg; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1113 | |
Victor Stinner | efb2413 | 2016-01-22 12:33:12 +0100 | [diff] [blame] | 1114 | t = _PyCode_ConstantKey(o); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1115 | if (t == NULL) |
| 1116 | return -1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1117 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1118 | v = PyDict_GetItem(dict, t); |
| 1119 | if (!v) { |
Stefan Krah | c0cbed1 | 2015-07-27 12:56:49 +0200 | [diff] [blame] | 1120 | if (PyErr_Occurred()) { |
| 1121 | Py_DECREF(t); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1122 | return -1; |
Stefan Krah | c0cbed1 | 2015-07-27 12:56:49 +0200 | [diff] [blame] | 1123 | } |
Serhiy Storchaka | 5ab81d7 | 2016-12-16 16:18:57 +0200 | [diff] [blame] | 1124 | arg = PyDict_GET_SIZE(dict); |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 1125 | v = PyLong_FromSsize_t(arg); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1126 | if (!v) { |
| 1127 | Py_DECREF(t); |
| 1128 | return -1; |
| 1129 | } |
| 1130 | if (PyDict_SetItem(dict, t, v) < 0) { |
| 1131 | Py_DECREF(t); |
| 1132 | Py_DECREF(v); |
| 1133 | return -1; |
| 1134 | } |
| 1135 | Py_DECREF(v); |
| 1136 | } |
| 1137 | else |
| 1138 | arg = PyLong_AsLong(v); |
| 1139 | Py_DECREF(t); |
| 1140 | return arg; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1141 | } |
| 1142 | |
| 1143 | static int |
| 1144 | compiler_addop_o(struct compiler *c, int opcode, PyObject *dict, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1145 | PyObject *o) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1146 | { |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 1147 | Py_ssize_t arg = compiler_add_o(c, dict, o); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1148 | if (arg < 0) |
Antoine Pitrou | 9aee2c8 | 2010-06-22 21:49:39 +0000 | [diff] [blame] | 1149 | return 0; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1150 | return compiler_addop_i(c, opcode, arg); |
| 1151 | } |
| 1152 | |
| 1153 | static int |
| 1154 | compiler_addop_name(struct compiler *c, int opcode, PyObject *dict, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1155 | PyObject *o) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1156 | { |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 1157 | Py_ssize_t arg; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1158 | PyObject *mangled = _Py_Mangle(c->u->u_private, o); |
| 1159 | if (!mangled) |
Antoine Pitrou | 9aee2c8 | 2010-06-22 21:49:39 +0000 | [diff] [blame] | 1160 | return 0; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1161 | arg = compiler_add_o(c, dict, mangled); |
| 1162 | Py_DECREF(mangled); |
| 1163 | if (arg < 0) |
Antoine Pitrou | 9aee2c8 | 2010-06-22 21:49:39 +0000 | [diff] [blame] | 1164 | return 0; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1165 | return compiler_addop_i(c, opcode, arg); |
| 1166 | } |
| 1167 | |
| 1168 | /* Add an opcode with an integer argument. |
| 1169 | Returns 0 on failure, 1 on success. |
| 1170 | */ |
| 1171 | |
| 1172 | static int |
Victor Stinner | f8e3221 | 2013-11-19 23:56:34 +0100 | [diff] [blame] | 1173 | compiler_addop_i(struct compiler *c, int opcode, Py_ssize_t oparg) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1174 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1175 | struct instr *i; |
| 1176 | int off; |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 1177 | |
Victor Stinner | 2ad474b | 2016-03-01 23:34:47 +0100 | [diff] [blame] | 1178 | /* oparg value is unsigned, but a signed C int is usually used to store |
| 1179 | it in the C code (like Python/ceval.c). |
| 1180 | |
| 1181 | Limit to 32-bit signed C int (rather than INT_MAX) for portability. |
| 1182 | |
Serhiy Storchaka | b0f80b0 | 2016-05-24 09:15:14 +0300 | [diff] [blame] | 1183 | The argument of a concrete bytecode instruction is limited to 8-bit. |
| 1184 | EXTENDED_ARG is used for 16, 24, and 32-bit arguments. */ |
| 1185 | assert(HAS_ARG(opcode)); |
Victor Stinner | 2ad474b | 2016-03-01 23:34:47 +0100 | [diff] [blame] | 1186 | assert(0 <= oparg && oparg <= 2147483647); |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 1187 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1188 | off = compiler_next_instr(c, c->u->u_curblock); |
| 1189 | if (off < 0) |
| 1190 | return 0; |
| 1191 | i = &c->u->u_curblock->b_instr[off]; |
Victor Stinner | f8e3221 | 2013-11-19 23:56:34 +0100 | [diff] [blame] | 1192 | i->i_opcode = opcode; |
| 1193 | i->i_oparg = Py_SAFE_DOWNCAST(oparg, Py_ssize_t, int); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1194 | compiler_set_lineno(c, off); |
| 1195 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1196 | } |
| 1197 | |
| 1198 | static int |
| 1199 | compiler_addop_j(struct compiler *c, int opcode, basicblock *b, int absolute) |
| 1200 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1201 | struct instr *i; |
| 1202 | int off; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1203 | |
Serhiy Storchaka | b0f80b0 | 2016-05-24 09:15:14 +0300 | [diff] [blame] | 1204 | assert(HAS_ARG(opcode)); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1205 | assert(b != NULL); |
| 1206 | off = compiler_next_instr(c, c->u->u_curblock); |
| 1207 | if (off < 0) |
| 1208 | return 0; |
| 1209 | i = &c->u->u_curblock->b_instr[off]; |
| 1210 | i->i_opcode = opcode; |
| 1211 | i->i_target = b; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1212 | if (absolute) |
| 1213 | i->i_jabs = 1; |
| 1214 | else |
| 1215 | i->i_jrel = 1; |
| 1216 | compiler_set_lineno(c, off); |
| 1217 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1218 | } |
| 1219 | |
Victor Stinner | fc6f2ef | 2016-02-27 02:19:22 +0100 | [diff] [blame] | 1220 | /* NEXT_BLOCK() creates an implicit jump from the current block |
| 1221 | to the new block. |
| 1222 | |
| 1223 | The returns inside this macro make it impossible to decref objects |
| 1224 | created in the local function. Local objects should use the arena. |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1225 | */ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1226 | #define NEXT_BLOCK(C) { \ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1227 | if (compiler_next_block((C)) == NULL) \ |
| 1228 | return 0; \ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1229 | } |
| 1230 | |
| 1231 | #define ADDOP(C, OP) { \ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1232 | if (!compiler_addop((C), (OP))) \ |
| 1233 | return 0; \ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1234 | } |
| 1235 | |
Neal Norwitz | b6fc9df | 2005-11-13 18:50:34 +0000 | [diff] [blame] | 1236 | #define ADDOP_IN_SCOPE(C, OP) { \ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1237 | if (!compiler_addop((C), (OP))) { \ |
| 1238 | compiler_exit_scope(c); \ |
| 1239 | return 0; \ |
| 1240 | } \ |
Neal Norwitz | b6fc9df | 2005-11-13 18:50:34 +0000 | [diff] [blame] | 1241 | } |
| 1242 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1243 | #define ADDOP_O(C, OP, O, TYPE) { \ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1244 | if (!compiler_addop_o((C), (OP), (C)->u->u_ ## TYPE, (O))) \ |
| 1245 | return 0; \ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1246 | } |
| 1247 | |
Serhiy Storchaka | 6a7506a | 2016-06-12 00:39:41 +0300 | [diff] [blame] | 1248 | /* Same as ADDOP_O, but steals a reference. */ |
| 1249 | #define ADDOP_N(C, OP, O, TYPE) { \ |
| 1250 | if (!compiler_addop_o((C), (OP), (C)->u->u_ ## TYPE, (O))) { \ |
| 1251 | Py_DECREF((O)); \ |
| 1252 | return 0; \ |
| 1253 | } \ |
| 1254 | Py_DECREF((O)); \ |
| 1255 | } |
| 1256 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1257 | #define ADDOP_NAME(C, OP, O, TYPE) { \ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1258 | if (!compiler_addop_name((C), (OP), (C)->u->u_ ## TYPE, (O))) \ |
| 1259 | return 0; \ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1260 | } |
| 1261 | |
| 1262 | #define ADDOP_I(C, OP, O) { \ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1263 | if (!compiler_addop_i((C), (OP), (O))) \ |
| 1264 | return 0; \ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1265 | } |
| 1266 | |
| 1267 | #define ADDOP_JABS(C, OP, O) { \ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1268 | if (!compiler_addop_j((C), (OP), (O), 1)) \ |
| 1269 | return 0; \ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1270 | } |
| 1271 | |
| 1272 | #define ADDOP_JREL(C, OP, O) { \ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1273 | if (!compiler_addop_j((C), (OP), (O), 0)) \ |
| 1274 | return 0; \ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1275 | } |
| 1276 | |
| 1277 | /* VISIT and VISIT_SEQ takes an ASDL type as their second argument. They use |
| 1278 | the ASDL name to synthesize the name of the C type and the visit function. |
| 1279 | */ |
| 1280 | |
| 1281 | #define VISIT(C, TYPE, V) {\ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1282 | if (!compiler_visit_ ## TYPE((C), (V))) \ |
| 1283 | return 0; \ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1284 | } |
| 1285 | |
Neal Norwitz | b6fc9df | 2005-11-13 18:50:34 +0000 | [diff] [blame] | 1286 | #define VISIT_IN_SCOPE(C, TYPE, V) {\ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1287 | if (!compiler_visit_ ## TYPE((C), (V))) { \ |
| 1288 | compiler_exit_scope(c); \ |
| 1289 | return 0; \ |
| 1290 | } \ |
Neal Norwitz | b6fc9df | 2005-11-13 18:50:34 +0000 | [diff] [blame] | 1291 | } |
| 1292 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1293 | #define VISIT_SLICE(C, V, CTX) {\ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1294 | if (!compiler_visit_slice((C), (V), (CTX))) \ |
| 1295 | return 0; \ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1296 | } |
| 1297 | |
| 1298 | #define VISIT_SEQ(C, TYPE, SEQ) { \ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1299 | int _i; \ |
| 1300 | asdl_seq *seq = (SEQ); /* avoid variable capture */ \ |
| 1301 | for (_i = 0; _i < asdl_seq_LEN(seq); _i++) { \ |
| 1302 | TYPE ## _ty elt = (TYPE ## _ty)asdl_seq_GET(seq, _i); \ |
| 1303 | if (!compiler_visit_ ## TYPE((C), elt)) \ |
| 1304 | return 0; \ |
| 1305 | } \ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1306 | } |
| 1307 | |
Neal Norwitz | b6fc9df | 2005-11-13 18:50:34 +0000 | [diff] [blame] | 1308 | #define VISIT_SEQ_IN_SCOPE(C, TYPE, SEQ) { \ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1309 | int _i; \ |
| 1310 | asdl_seq *seq = (SEQ); /* avoid variable capture */ \ |
| 1311 | for (_i = 0; _i < asdl_seq_LEN(seq); _i++) { \ |
| 1312 | TYPE ## _ty elt = (TYPE ## _ty)asdl_seq_GET(seq, _i); \ |
| 1313 | if (!compiler_visit_ ## TYPE((C), elt)) { \ |
| 1314 | compiler_exit_scope(c); \ |
| 1315 | return 0; \ |
| 1316 | } \ |
| 1317 | } \ |
Neal Norwitz | b6fc9df | 2005-11-13 18:50:34 +0000 | [diff] [blame] | 1318 | } |
| 1319 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1320 | static int |
Serhiy Storchaka | 6a7506a | 2016-06-12 00:39:41 +0300 | [diff] [blame] | 1321 | is_const(expr_ty e) |
| 1322 | { |
| 1323 | switch (e->kind) { |
| 1324 | case Constant_kind: |
| 1325 | case Num_kind: |
| 1326 | case Str_kind: |
| 1327 | case Bytes_kind: |
| 1328 | case Ellipsis_kind: |
| 1329 | case NameConstant_kind: |
| 1330 | return 1; |
| 1331 | default: |
| 1332 | return 0; |
| 1333 | } |
| 1334 | } |
| 1335 | |
| 1336 | static PyObject * |
| 1337 | get_const_value(expr_ty e) |
| 1338 | { |
| 1339 | switch (e->kind) { |
| 1340 | case Constant_kind: |
| 1341 | return e->v.Constant.value; |
| 1342 | case Num_kind: |
| 1343 | return e->v.Num.n; |
| 1344 | case Str_kind: |
| 1345 | return e->v.Str.s; |
| 1346 | case Bytes_kind: |
| 1347 | return e->v.Bytes.s; |
| 1348 | case Ellipsis_kind: |
| 1349 | return Py_Ellipsis; |
| 1350 | case NameConstant_kind: |
| 1351 | return e->v.NameConstant.value; |
| 1352 | default: |
| 1353 | assert(!is_const(e)); |
| 1354 | return NULL; |
| 1355 | } |
| 1356 | } |
| 1357 | |
Yury Selivanov | f8cb8a1 | 2016-09-08 20:50:03 -0700 | [diff] [blame] | 1358 | /* Search if variable annotations are present statically in a block. */ |
| 1359 | |
| 1360 | static int |
| 1361 | find_ann(asdl_seq *stmts) |
| 1362 | { |
| 1363 | int i, j, res = 0; |
| 1364 | stmt_ty st; |
| 1365 | |
| 1366 | for (i = 0; i < asdl_seq_LEN(stmts); i++) { |
| 1367 | st = (stmt_ty)asdl_seq_GET(stmts, i); |
| 1368 | switch (st->kind) { |
| 1369 | case AnnAssign_kind: |
| 1370 | return 1; |
| 1371 | case For_kind: |
| 1372 | res = find_ann(st->v.For.body) || |
| 1373 | find_ann(st->v.For.orelse); |
| 1374 | break; |
| 1375 | case AsyncFor_kind: |
| 1376 | res = find_ann(st->v.AsyncFor.body) || |
| 1377 | find_ann(st->v.AsyncFor.orelse); |
| 1378 | break; |
| 1379 | case While_kind: |
| 1380 | res = find_ann(st->v.While.body) || |
| 1381 | find_ann(st->v.While.orelse); |
| 1382 | break; |
| 1383 | case If_kind: |
| 1384 | res = find_ann(st->v.If.body) || |
| 1385 | find_ann(st->v.If.orelse); |
| 1386 | break; |
| 1387 | case With_kind: |
| 1388 | res = find_ann(st->v.With.body); |
| 1389 | break; |
| 1390 | case AsyncWith_kind: |
| 1391 | res = find_ann(st->v.AsyncWith.body); |
| 1392 | break; |
| 1393 | case Try_kind: |
| 1394 | for (j = 0; j < asdl_seq_LEN(st->v.Try.handlers); j++) { |
| 1395 | excepthandler_ty handler = (excepthandler_ty)asdl_seq_GET( |
| 1396 | st->v.Try.handlers, j); |
| 1397 | if (find_ann(handler->v.ExceptHandler.body)) { |
| 1398 | return 1; |
| 1399 | } |
| 1400 | } |
| 1401 | res = find_ann(st->v.Try.body) || |
| 1402 | find_ann(st->v.Try.finalbody) || |
| 1403 | find_ann(st->v.Try.orelse); |
| 1404 | break; |
| 1405 | default: |
| 1406 | res = 0; |
| 1407 | } |
| 1408 | if (res) { |
| 1409 | break; |
| 1410 | } |
| 1411 | } |
| 1412 | return res; |
| 1413 | } |
| 1414 | |
| 1415 | /* Compile a sequence of statements, checking for a docstring |
| 1416 | and for annotations. */ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1417 | |
| 1418 | static int |
INADA Naoki | cb41b27 | 2017-02-23 00:31:59 +0900 | [diff] [blame] | 1419 | compiler_body(struct compiler *c, asdl_seq *stmts, string docstring) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1420 | { |
Yury Selivanov | f8cb8a1 | 2016-09-08 20:50:03 -0700 | [diff] [blame] | 1421 | /* Set current line number to the line number of first statement. |
| 1422 | This way line number for SETUP_ANNOTATIONS will always |
| 1423 | coincide with the line number of first "real" statement in module. |
| 1424 | If body is empy, then lineno will be set later in assemble. */ |
| 1425 | if (c->u->u_scope_type == COMPILER_SCOPE_MODULE && |
| 1426 | !c->u->u_lineno && asdl_seq_LEN(stmts)) { |
INADA Naoki | cb41b27 | 2017-02-23 00:31:59 +0900 | [diff] [blame] | 1427 | stmt_ty st = (stmt_ty)asdl_seq_GET(stmts, 0); |
Yury Selivanov | f8cb8a1 | 2016-09-08 20:50:03 -0700 | [diff] [blame] | 1428 | c->u->u_lineno = st->lineno; |
| 1429 | } |
| 1430 | /* Every annotated class and module should have __annotations__. */ |
| 1431 | if (find_ann(stmts)) { |
| 1432 | ADDOP(c, SETUP_ANNOTATIONS); |
| 1433 | } |
INADA Naoki | cb41b27 | 2017-02-23 00:31:59 +0900 | [diff] [blame] | 1434 | /* if not -OO mode, set docstring */ |
| 1435 | if (c->c_optimize < 2 && docstring) { |
| 1436 | ADDOP_O(c, LOAD_CONST, docstring, consts); |
| 1437 | ADDOP_NAME(c, STORE_NAME, __doc__, names); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1438 | } |
INADA Naoki | cb41b27 | 2017-02-23 00:31:59 +0900 | [diff] [blame] | 1439 | VISIT_SEQ(c, stmt, stmts); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1440 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1441 | } |
| 1442 | |
| 1443 | static PyCodeObject * |
| 1444 | compiler_mod(struct compiler *c, mod_ty mod) |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1445 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1446 | PyCodeObject *co; |
| 1447 | int addNone = 1; |
| 1448 | static PyObject *module; |
| 1449 | if (!module) { |
| 1450 | module = PyUnicode_InternFromString("<module>"); |
| 1451 | if (!module) |
| 1452 | return NULL; |
| 1453 | } |
| 1454 | /* Use 0 for firstlineno initially, will fixup in assemble(). */ |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 1455 | if (!compiler_enter_scope(c, module, COMPILER_SCOPE_MODULE, mod, 0)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1456 | return NULL; |
| 1457 | switch (mod->kind) { |
| 1458 | case Module_kind: |
INADA Naoki | cb41b27 | 2017-02-23 00:31:59 +0900 | [diff] [blame] | 1459 | if (!compiler_body(c, mod->v.Module.body, mod->v.Module.docstring)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1460 | compiler_exit_scope(c); |
| 1461 | return 0; |
| 1462 | } |
| 1463 | break; |
| 1464 | case Interactive_kind: |
Yury Selivanov | f8cb8a1 | 2016-09-08 20:50:03 -0700 | [diff] [blame] | 1465 | if (find_ann(mod->v.Interactive.body)) { |
| 1466 | ADDOP(c, SETUP_ANNOTATIONS); |
| 1467 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1468 | c->c_interactive = 1; |
| 1469 | VISIT_SEQ_IN_SCOPE(c, stmt, |
| 1470 | mod->v.Interactive.body); |
| 1471 | break; |
| 1472 | case Expression_kind: |
| 1473 | VISIT_IN_SCOPE(c, expr, mod->v.Expression.body); |
| 1474 | addNone = 0; |
| 1475 | break; |
| 1476 | case Suite_kind: |
| 1477 | PyErr_SetString(PyExc_SystemError, |
| 1478 | "suite should not be possible"); |
| 1479 | return 0; |
| 1480 | default: |
| 1481 | PyErr_Format(PyExc_SystemError, |
| 1482 | "module kind %d should not be possible", |
| 1483 | mod->kind); |
| 1484 | return 0; |
| 1485 | } |
| 1486 | co = assemble(c, addNone); |
| 1487 | compiler_exit_scope(c); |
| 1488 | return co; |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 1489 | } |
| 1490 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1491 | /* The test for LOCAL must come before the test for FREE in order to |
| 1492 | handle classes where name is both local and free. The local var is |
| 1493 | a method and the free var is a free var referenced within a method. |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 1494 | */ |
| 1495 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1496 | static int |
| 1497 | get_ref_type(struct compiler *c, PyObject *name) |
| 1498 | { |
Victor Stinner | 0b1bc56 | 2013-05-16 22:17:17 +0200 | [diff] [blame] | 1499 | int scope; |
Benjamin Peterson | 312595c | 2013-05-15 15:26:42 -0500 | [diff] [blame] | 1500 | if (c->u->u_scope_type == COMPILER_SCOPE_CLASS && |
Serhiy Storchaka | f4934ea | 2016-11-16 10:17:58 +0200 | [diff] [blame] | 1501 | _PyUnicode_EqualToASCIIString(name, "__class__")) |
Benjamin Peterson | 312595c | 2013-05-15 15:26:42 -0500 | [diff] [blame] | 1502 | return CELL; |
Victor Stinner | 0b1bc56 | 2013-05-16 22:17:17 +0200 | [diff] [blame] | 1503 | scope = PyST_GetScope(c->u->u_ste, name); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1504 | if (scope == 0) { |
| 1505 | char buf[350]; |
| 1506 | PyOS_snprintf(buf, sizeof(buf), |
Victor Stinner | 14e461d | 2013-08-26 22:28:21 +0200 | [diff] [blame] | 1507 | "unknown scope for %.100s in %.100s(%s)\n" |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1508 | "symbols: %s\nlocals: %s\nglobals: %s", |
Serhiy Storchaka | df4518c | 2014-11-18 23:34:33 +0200 | [diff] [blame] | 1509 | PyUnicode_AsUTF8(name), |
| 1510 | PyUnicode_AsUTF8(c->u->u_name), |
| 1511 | PyUnicode_AsUTF8(PyObject_Repr(c->u->u_ste->ste_id)), |
| 1512 | PyUnicode_AsUTF8(PyObject_Repr(c->u->u_ste->ste_symbols)), |
| 1513 | PyUnicode_AsUTF8(PyObject_Repr(c->u->u_varnames)), |
| 1514 | PyUnicode_AsUTF8(PyObject_Repr(c->u->u_names)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1515 | ); |
| 1516 | Py_FatalError(buf); |
| 1517 | } |
Tim Peters | 2a7f384 | 2001-06-09 09:26:21 +0000 | [diff] [blame] | 1518 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1519 | return scope; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1520 | } |
| 1521 | |
| 1522 | static int |
| 1523 | compiler_lookup_arg(PyObject *dict, PyObject *name) |
| 1524 | { |
| 1525 | PyObject *k, *v; |
Victor Stinner | efb2413 | 2016-01-22 12:33:12 +0100 | [diff] [blame] | 1526 | k = _PyCode_ConstantKey(name); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1527 | if (k == NULL) |
Antoine Pitrou | 9aee2c8 | 2010-06-22 21:49:39 +0000 | [diff] [blame] | 1528 | return -1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1529 | v = PyDict_GetItem(dict, k); |
Neal Norwitz | 3715c3e | 2005-11-24 22:09:18 +0000 | [diff] [blame] | 1530 | Py_DECREF(k); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1531 | if (v == NULL) |
Antoine Pitrou | 9aee2c8 | 2010-06-22 21:49:39 +0000 | [diff] [blame] | 1532 | return -1; |
Christian Heimes | 217cfd1 | 2007-12-02 14:31:20 +0000 | [diff] [blame] | 1533 | return PyLong_AS_LONG(v); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1534 | } |
| 1535 | |
| 1536 | static int |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1537 | compiler_make_closure(struct compiler *c, PyCodeObject *co, Py_ssize_t flags, PyObject *qualname) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1538 | { |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 1539 | Py_ssize_t i, free = PyCode_GetNumFree(co); |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 1540 | if (qualname == NULL) |
| 1541 | qualname = co->co_name; |
| 1542 | |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1543 | if (free) { |
| 1544 | for (i = 0; i < free; ++i) { |
| 1545 | /* Bypass com_addop_varname because it will generate |
| 1546 | LOAD_DEREF but LOAD_CLOSURE is needed. |
| 1547 | */ |
| 1548 | PyObject *name = PyTuple_GET_ITEM(co->co_freevars, i); |
| 1549 | int arg, reftype; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1550 | |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1551 | /* Special case: If a class contains a method with a |
| 1552 | free variable that has the same name as a method, |
| 1553 | the name will be considered free *and* local in the |
| 1554 | class. It should be handled by the closure, as |
| 1555 | well as by the normal name loookup logic. |
| 1556 | */ |
| 1557 | reftype = get_ref_type(c, name); |
| 1558 | if (reftype == CELL) |
| 1559 | arg = compiler_lookup_arg(c->u->u_cellvars, name); |
| 1560 | else /* (reftype == FREE) */ |
| 1561 | arg = compiler_lookup_arg(c->u->u_freevars, name); |
| 1562 | if (arg == -1) { |
| 1563 | fprintf(stderr, |
| 1564 | "lookup %s in %s %d %d\n" |
| 1565 | "freevars of %s: %s\n", |
| 1566 | PyUnicode_AsUTF8(PyObject_Repr(name)), |
| 1567 | PyUnicode_AsUTF8(c->u->u_name), |
| 1568 | reftype, arg, |
| 1569 | PyUnicode_AsUTF8(co->co_name), |
| 1570 | PyUnicode_AsUTF8(PyObject_Repr(co->co_freevars))); |
| 1571 | Py_FatalError("compiler_make_closure()"); |
| 1572 | } |
| 1573 | ADDOP_I(c, LOAD_CLOSURE, arg); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1574 | } |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1575 | flags |= 0x08; |
| 1576 | ADDOP_I(c, BUILD_TUPLE, free); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1577 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1578 | ADDOP_O(c, LOAD_CONST, (PyObject*)co, consts); |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 1579 | ADDOP_O(c, LOAD_CONST, qualname, consts); |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1580 | ADDOP_I(c, MAKE_FUNCTION, flags); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1581 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1582 | } |
| 1583 | |
| 1584 | static int |
| 1585 | compiler_decorators(struct compiler *c, asdl_seq* decos) |
| 1586 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1587 | int i; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1588 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1589 | if (!decos) |
| 1590 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1591 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1592 | for (i = 0; i < asdl_seq_LEN(decos); i++) { |
| 1593 | VISIT(c, expr, (expr_ty)asdl_seq_GET(decos, i)); |
| 1594 | } |
| 1595 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1596 | } |
| 1597 | |
| 1598 | static int |
Guido van Rossum | 4f72a78 | 2006-10-27 23:31:49 +0000 | [diff] [blame] | 1599 | compiler_visit_kwonlydefaults(struct compiler *c, asdl_seq *kwonlyargs, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1600 | asdl_seq *kw_defaults) |
Guido van Rossum | 4f72a78 | 2006-10-27 23:31:49 +0000 | [diff] [blame] | 1601 | { |
Serhiy Storchaka | 607f8a5 | 2016-06-15 20:07:53 +0300 | [diff] [blame] | 1602 | /* Push a dict of keyword-only default values. |
| 1603 | |
| 1604 | Return 0 on error, -1 if no dict pushed, 1 if a dict is pushed. |
| 1605 | */ |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1606 | int i; |
| 1607 | PyObject *keys = NULL; |
| 1608 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1609 | for (i = 0; i < asdl_seq_LEN(kwonlyargs); i++) { |
| 1610 | arg_ty arg = asdl_seq_GET(kwonlyargs, i); |
| 1611 | expr_ty default_ = asdl_seq_GET(kw_defaults, i); |
| 1612 | if (default_) { |
Benjamin Peterson | 32c59b6 | 2012-04-17 19:53:21 -0400 | [diff] [blame] | 1613 | PyObject *mangled = _Py_Mangle(c->u->u_private, arg->arg); |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1614 | if (!mangled) { |
| 1615 | goto error; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1616 | } |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1617 | if (keys == NULL) { |
| 1618 | keys = PyList_New(1); |
| 1619 | if (keys == NULL) { |
| 1620 | Py_DECREF(mangled); |
Serhiy Storchaka | 607f8a5 | 2016-06-15 20:07:53 +0300 | [diff] [blame] | 1621 | return 0; |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1622 | } |
| 1623 | PyList_SET_ITEM(keys, 0, mangled); |
| 1624 | } |
| 1625 | else { |
| 1626 | int res = PyList_Append(keys, mangled); |
| 1627 | Py_DECREF(mangled); |
| 1628 | if (res == -1) { |
| 1629 | goto error; |
| 1630 | } |
| 1631 | } |
| 1632 | if (!compiler_visit_expr(c, default_)) { |
| 1633 | goto error; |
| 1634 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1635 | } |
| 1636 | } |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1637 | if (keys != NULL) { |
| 1638 | Py_ssize_t default_count = PyList_GET_SIZE(keys); |
| 1639 | PyObject *keys_tuple = PyList_AsTuple(keys); |
| 1640 | Py_DECREF(keys); |
| 1641 | if (keys_tuple == NULL) { |
Serhiy Storchaka | 607f8a5 | 2016-06-15 20:07:53 +0300 | [diff] [blame] | 1642 | return 0; |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1643 | } |
| 1644 | ADDOP_N(c, LOAD_CONST, keys_tuple, consts); |
| 1645 | ADDOP_I(c, BUILD_CONST_KEY_MAP, default_count); |
Serhiy Storchaka | 607f8a5 | 2016-06-15 20:07:53 +0300 | [diff] [blame] | 1646 | assert(default_count > 0); |
| 1647 | return 1; |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1648 | } |
| 1649 | else { |
Serhiy Storchaka | 607f8a5 | 2016-06-15 20:07:53 +0300 | [diff] [blame] | 1650 | return -1; |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1651 | } |
| 1652 | |
| 1653 | error: |
| 1654 | Py_XDECREF(keys); |
Serhiy Storchaka | 607f8a5 | 2016-06-15 20:07:53 +0300 | [diff] [blame] | 1655 | return 0; |
Guido van Rossum | 4f72a78 | 2006-10-27 23:31:49 +0000 | [diff] [blame] | 1656 | } |
| 1657 | |
| 1658 | static int |
Neal Norwitz | c150536 | 2006-12-28 06:47:50 +0000 | [diff] [blame] | 1659 | compiler_visit_argannotation(struct compiler *c, identifier id, |
| 1660 | expr_ty annotation, PyObject *names) |
| 1661 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1662 | if (annotation) { |
Victor Stinner | 065efc3 | 2014-02-18 22:07:56 +0100 | [diff] [blame] | 1663 | PyObject *mangled; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1664 | VISIT(c, expr, annotation); |
Victor Stinner | 065efc3 | 2014-02-18 22:07:56 +0100 | [diff] [blame] | 1665 | mangled = _Py_Mangle(c->u->u_private, id); |
Yury Selivanov | 34ce99f | 2014-02-18 12:49:41 -0500 | [diff] [blame] | 1666 | if (!mangled) |
Yury Selivanov | f315c1c | 2015-07-23 09:10:44 +0300 | [diff] [blame] | 1667 | return 0; |
Yury Selivanov | 34ce99f | 2014-02-18 12:49:41 -0500 | [diff] [blame] | 1668 | if (PyList_Append(names, mangled) < 0) { |
| 1669 | Py_DECREF(mangled); |
Yury Selivanov | f315c1c | 2015-07-23 09:10:44 +0300 | [diff] [blame] | 1670 | return 0; |
Yury Selivanov | 34ce99f | 2014-02-18 12:49:41 -0500 | [diff] [blame] | 1671 | } |
| 1672 | Py_DECREF(mangled); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1673 | } |
Yury Selivanov | f315c1c | 2015-07-23 09:10:44 +0300 | [diff] [blame] | 1674 | return 1; |
Neal Norwitz | c150536 | 2006-12-28 06:47:50 +0000 | [diff] [blame] | 1675 | } |
| 1676 | |
| 1677 | static int |
| 1678 | compiler_visit_argannotations(struct compiler *c, asdl_seq* args, |
| 1679 | PyObject *names) |
| 1680 | { |
Yury Selivanov | f315c1c | 2015-07-23 09:10:44 +0300 | [diff] [blame] | 1681 | int i; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1682 | for (i = 0; i < asdl_seq_LEN(args); i++) { |
| 1683 | arg_ty arg = (arg_ty)asdl_seq_GET(args, i); |
Yury Selivanov | f315c1c | 2015-07-23 09:10:44 +0300 | [diff] [blame] | 1684 | if (!compiler_visit_argannotation( |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1685 | c, |
| 1686 | arg->arg, |
| 1687 | arg->annotation, |
Yury Selivanov | f315c1c | 2015-07-23 09:10:44 +0300 | [diff] [blame] | 1688 | names)) |
| 1689 | return 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1690 | } |
Yury Selivanov | f315c1c | 2015-07-23 09:10:44 +0300 | [diff] [blame] | 1691 | return 1; |
Neal Norwitz | c150536 | 2006-12-28 06:47:50 +0000 | [diff] [blame] | 1692 | } |
| 1693 | |
| 1694 | static int |
| 1695 | compiler_visit_annotations(struct compiler *c, arguments_ty args, |
| 1696 | expr_ty returns) |
| 1697 | { |
Serhiy Storchaka | 607f8a5 | 2016-06-15 20:07:53 +0300 | [diff] [blame] | 1698 | /* Push arg annotation dict. |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1699 | The expressions are evaluated out-of-order wrt the source code. |
Neal Norwitz | c150536 | 2006-12-28 06:47:50 +0000 | [diff] [blame] | 1700 | |
Serhiy Storchaka | 607f8a5 | 2016-06-15 20:07:53 +0300 | [diff] [blame] | 1701 | Return 0 on error, -1 if no dict pushed, 1 if a dict is pushed. |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1702 | */ |
| 1703 | static identifier return_str; |
| 1704 | PyObject *names; |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 1705 | Py_ssize_t len; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1706 | names = PyList_New(0); |
| 1707 | if (!names) |
Serhiy Storchaka | 694de3b | 2016-06-15 20:06:07 +0300 | [diff] [blame] | 1708 | return 0; |
Neal Norwitz | c150536 | 2006-12-28 06:47:50 +0000 | [diff] [blame] | 1709 | |
Yury Selivanov | f315c1c | 2015-07-23 09:10:44 +0300 | [diff] [blame] | 1710 | if (!compiler_visit_argannotations(c, args->args, names)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1711 | goto error; |
Benjamin Peterson | cda75be | 2013-03-18 10:48:58 -0700 | [diff] [blame] | 1712 | if (args->vararg && args->vararg->annotation && |
Yury Selivanov | f315c1c | 2015-07-23 09:10:44 +0300 | [diff] [blame] | 1713 | !compiler_visit_argannotation(c, args->vararg->arg, |
Benjamin Peterson | cda75be | 2013-03-18 10:48:58 -0700 | [diff] [blame] | 1714 | args->vararg->annotation, names)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1715 | goto error; |
Yury Selivanov | f315c1c | 2015-07-23 09:10:44 +0300 | [diff] [blame] | 1716 | if (!compiler_visit_argannotations(c, args->kwonlyargs, names)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1717 | goto error; |
Benjamin Peterson | cda75be | 2013-03-18 10:48:58 -0700 | [diff] [blame] | 1718 | if (args->kwarg && args->kwarg->annotation && |
Yury Selivanov | f315c1c | 2015-07-23 09:10:44 +0300 | [diff] [blame] | 1719 | !compiler_visit_argannotation(c, args->kwarg->arg, |
Benjamin Peterson | cda75be | 2013-03-18 10:48:58 -0700 | [diff] [blame] | 1720 | args->kwarg->annotation, names)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1721 | goto error; |
Neal Norwitz | c150536 | 2006-12-28 06:47:50 +0000 | [diff] [blame] | 1722 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1723 | if (!return_str) { |
| 1724 | return_str = PyUnicode_InternFromString("return"); |
| 1725 | if (!return_str) |
| 1726 | goto error; |
| 1727 | } |
Yury Selivanov | f315c1c | 2015-07-23 09:10:44 +0300 | [diff] [blame] | 1728 | if (!compiler_visit_argannotation(c, return_str, returns, names)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1729 | goto error; |
| 1730 | } |
| 1731 | |
| 1732 | len = PyList_GET_SIZE(names); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1733 | if (len) { |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1734 | PyObject *keytuple = PyList_AsTuple(names); |
| 1735 | Py_DECREF(names); |
| 1736 | if (keytuple == NULL) { |
Serhiy Storchaka | 607f8a5 | 2016-06-15 20:07:53 +0300 | [diff] [blame] | 1737 | return 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1738 | } |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1739 | ADDOP_N(c, LOAD_CONST, keytuple, consts); |
| 1740 | ADDOP_I(c, BUILD_CONST_KEY_MAP, len); |
Serhiy Storchaka | 607f8a5 | 2016-06-15 20:07:53 +0300 | [diff] [blame] | 1741 | return 1; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1742 | } |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1743 | else { |
| 1744 | Py_DECREF(names); |
Serhiy Storchaka | 607f8a5 | 2016-06-15 20:07:53 +0300 | [diff] [blame] | 1745 | return -1; |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1746 | } |
Neal Norwitz | c150536 | 2006-12-28 06:47:50 +0000 | [diff] [blame] | 1747 | |
| 1748 | error: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1749 | Py_DECREF(names); |
Serhiy Storchaka | 694de3b | 2016-06-15 20:06:07 +0300 | [diff] [blame] | 1750 | return 0; |
Neal Norwitz | c150536 | 2006-12-28 06:47:50 +0000 | [diff] [blame] | 1751 | } |
| 1752 | |
| 1753 | static int |
Serhiy Storchaka | 607f8a5 | 2016-06-15 20:07:53 +0300 | [diff] [blame] | 1754 | compiler_visit_defaults(struct compiler *c, arguments_ty args) |
| 1755 | { |
| 1756 | VISIT_SEQ(c, expr, args->defaults); |
| 1757 | ADDOP_I(c, BUILD_TUPLE, asdl_seq_LEN(args->defaults)); |
| 1758 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1759 | } |
| 1760 | |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1761 | static Py_ssize_t |
| 1762 | compiler_default_arguments(struct compiler *c, arguments_ty args) |
| 1763 | { |
| 1764 | Py_ssize_t funcflags = 0; |
| 1765 | if (args->defaults && asdl_seq_LEN(args->defaults) > 0) { |
Serhiy Storchaka | 607f8a5 | 2016-06-15 20:07:53 +0300 | [diff] [blame] | 1766 | if (!compiler_visit_defaults(c, args)) |
| 1767 | return -1; |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1768 | funcflags |= 0x01; |
| 1769 | } |
| 1770 | if (args->kwonlyargs) { |
Serhiy Storchaka | 607f8a5 | 2016-06-15 20:07:53 +0300 | [diff] [blame] | 1771 | int res = compiler_visit_kwonlydefaults(c, args->kwonlyargs, |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1772 | args->kw_defaults); |
Serhiy Storchaka | 607f8a5 | 2016-06-15 20:07:53 +0300 | [diff] [blame] | 1773 | if (res == 0) { |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1774 | return -1; |
| 1775 | } |
| 1776 | else if (res > 0) { |
| 1777 | funcflags |= 0x02; |
| 1778 | } |
| 1779 | } |
| 1780 | return funcflags; |
| 1781 | } |
| 1782 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1783 | static int |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1784 | compiler_function(struct compiler *c, stmt_ty s, int is_async) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1785 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1786 | PyCodeObject *co; |
INADA Naoki | cb41b27 | 2017-02-23 00:31:59 +0900 | [diff] [blame] | 1787 | PyObject *qualname, *docstring = Py_None; |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1788 | arguments_ty args; |
| 1789 | expr_ty returns; |
| 1790 | identifier name; |
| 1791 | asdl_seq* decos; |
| 1792 | asdl_seq *body; |
INADA Naoki | cb41b27 | 2017-02-23 00:31:59 +0900 | [diff] [blame] | 1793 | Py_ssize_t i, funcflags; |
Serhiy Storchaka | 607f8a5 | 2016-06-15 20:07:53 +0300 | [diff] [blame] | 1794 | int annotations; |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1795 | int scope_type; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1796 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1797 | if (is_async) { |
| 1798 | assert(s->kind == AsyncFunctionDef_kind); |
| 1799 | |
| 1800 | args = s->v.AsyncFunctionDef.args; |
| 1801 | returns = s->v.AsyncFunctionDef.returns; |
| 1802 | decos = s->v.AsyncFunctionDef.decorator_list; |
| 1803 | name = s->v.AsyncFunctionDef.name; |
| 1804 | body = s->v.AsyncFunctionDef.body; |
| 1805 | |
| 1806 | scope_type = COMPILER_SCOPE_ASYNC_FUNCTION; |
| 1807 | } else { |
| 1808 | assert(s->kind == FunctionDef_kind); |
| 1809 | |
| 1810 | args = s->v.FunctionDef.args; |
| 1811 | returns = s->v.FunctionDef.returns; |
| 1812 | decos = s->v.FunctionDef.decorator_list; |
| 1813 | name = s->v.FunctionDef.name; |
| 1814 | body = s->v.FunctionDef.body; |
| 1815 | |
| 1816 | scope_type = COMPILER_SCOPE_FUNCTION; |
| 1817 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1818 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1819 | if (!compiler_decorators(c, decos)) |
| 1820 | return 0; |
Guido van Rossum | 4f72a78 | 2006-10-27 23:31:49 +0000 | [diff] [blame] | 1821 | |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1822 | funcflags = compiler_default_arguments(c, args); |
| 1823 | if (funcflags == -1) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1824 | return 0; |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1825 | } |
| 1826 | |
Serhiy Storchaka | 607f8a5 | 2016-06-15 20:07:53 +0300 | [diff] [blame] | 1827 | annotations = compiler_visit_annotations(c, args, returns); |
| 1828 | if (annotations == 0) { |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1829 | return 0; |
| 1830 | } |
Serhiy Storchaka | 607f8a5 | 2016-06-15 20:07:53 +0300 | [diff] [blame] | 1831 | else if (annotations > 0) { |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1832 | funcflags |= 0x04; |
| 1833 | } |
| 1834 | |
| 1835 | if (!compiler_enter_scope(c, name, scope_type, (void *)s, s->lineno)) { |
| 1836 | return 0; |
| 1837 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1838 | |
INADA Naoki | cb41b27 | 2017-02-23 00:31:59 +0900 | [diff] [blame] | 1839 | /* if not -OO mode, add docstring */ |
| 1840 | if (c->c_optimize < 2 && s->v.FunctionDef.docstring) |
| 1841 | docstring = s->v.FunctionDef.docstring; |
| 1842 | if (compiler_add_o(c, c->u->u_consts, docstring) < 0) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1843 | compiler_exit_scope(c); |
| 1844 | return 0; |
| 1845 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1846 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1847 | c->u->u_argcount = asdl_seq_LEN(args->args); |
| 1848 | c->u->u_kwonlyargcount = asdl_seq_LEN(args->kwonlyargs); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1849 | /* if there was a docstring, we need to skip the first statement */ |
INADA Naoki | cb41b27 | 2017-02-23 00:31:59 +0900 | [diff] [blame] | 1850 | VISIT_SEQ_IN_SCOPE(c, stmt, body); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1851 | co = assemble(c, 1); |
Benjamin Peterson | 6b4f780 | 2013-10-20 17:50:28 -0400 | [diff] [blame] | 1852 | qualname = c->u->u_qualname; |
| 1853 | Py_INCREF(qualname); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1854 | compiler_exit_scope(c); |
Benjamin Peterson | 6b4f780 | 2013-10-20 17:50:28 -0400 | [diff] [blame] | 1855 | if (co == NULL) { |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 1856 | Py_XDECREF(qualname); |
| 1857 | Py_XDECREF(co); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1858 | return 0; |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 1859 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1860 | |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 1861 | compiler_make_closure(c, co, funcflags, qualname); |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 1862 | Py_DECREF(qualname); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1863 | Py_DECREF(co); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1864 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1865 | /* decorators */ |
| 1866 | for (i = 0; i < asdl_seq_LEN(decos); i++) { |
| 1867 | ADDOP_I(c, CALL_FUNCTION, 1); |
| 1868 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1869 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 1870 | return compiler_nameop(c, name, Store); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1871 | } |
| 1872 | |
| 1873 | static int |
| 1874 | compiler_class(struct compiler *c, stmt_ty s) |
| 1875 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1876 | PyCodeObject *co; |
| 1877 | PyObject *str; |
| 1878 | int i; |
| 1879 | asdl_seq* decos = s->v.ClassDef.decorator_list; |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 1880 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1881 | if (!compiler_decorators(c, decos)) |
| 1882 | return 0; |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 1883 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1884 | /* ultimately generate code for: |
| 1885 | <name> = __build_class__(<func>, <name>, *<bases>, **<keywords>) |
| 1886 | where: |
| 1887 | <func> is a function/closure created from the class body; |
| 1888 | it has a single argument (__locals__) where the dict |
| 1889 | (or MutableSequence) representing the locals is passed |
| 1890 | <name> is the class name |
| 1891 | <bases> is the positional arguments and *varargs argument |
| 1892 | <keywords> is the keyword arguments and **kwds argument |
| 1893 | This borrows from compiler_call. |
| 1894 | */ |
Guido van Rossum | 52cc1d8 | 2007-03-18 15:41:51 +0000 | [diff] [blame] | 1895 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1896 | /* 1. compile the class body into a code object */ |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 1897 | if (!compiler_enter_scope(c, s->v.ClassDef.name, |
| 1898 | COMPILER_SCOPE_CLASS, (void *)s, s->lineno)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1899 | return 0; |
| 1900 | /* this block represents what we do in the new scope */ |
| 1901 | { |
| 1902 | /* use the class name for name mangling */ |
| 1903 | Py_INCREF(s->v.ClassDef.name); |
Serhiy Storchaka | 4884271 | 2016-04-06 09:45:48 +0300 | [diff] [blame] | 1904 | Py_XSETREF(c->u->u_private, s->v.ClassDef.name); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1905 | /* load (global) __name__ ... */ |
| 1906 | str = PyUnicode_InternFromString("__name__"); |
| 1907 | if (!str || !compiler_nameop(c, str, Load)) { |
| 1908 | Py_XDECREF(str); |
| 1909 | compiler_exit_scope(c); |
| 1910 | return 0; |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 1911 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1912 | Py_DECREF(str); |
| 1913 | /* ... and store it as __module__ */ |
| 1914 | str = PyUnicode_InternFromString("__module__"); |
| 1915 | if (!str || !compiler_nameop(c, str, Store)) { |
| 1916 | Py_XDECREF(str); |
| 1917 | compiler_exit_scope(c); |
| 1918 | return 0; |
| 1919 | } |
| 1920 | Py_DECREF(str); |
Benjamin Peterson | 6b4f780 | 2013-10-20 17:50:28 -0400 | [diff] [blame] | 1921 | assert(c->u->u_qualname); |
| 1922 | ADDOP_O(c, LOAD_CONST, c->u->u_qualname, consts); |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 1923 | str = PyUnicode_InternFromString("__qualname__"); |
| 1924 | if (!str || !compiler_nameop(c, str, Store)) { |
| 1925 | Py_XDECREF(str); |
| 1926 | compiler_exit_scope(c); |
| 1927 | return 0; |
| 1928 | } |
| 1929 | Py_DECREF(str); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1930 | /* compile the body proper */ |
INADA Naoki | cb41b27 | 2017-02-23 00:31:59 +0900 | [diff] [blame] | 1931 | if (!compiler_body(c, s->v.ClassDef.body, s->v.ClassDef.docstring)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1932 | compiler_exit_scope(c); |
| 1933 | return 0; |
| 1934 | } |
Nick Coghlan | 19d2467 | 2016-12-05 16:47:55 +1000 | [diff] [blame] | 1935 | /* Return __classcell__ if it is referenced, otherwise return None */ |
Benjamin Peterson | 312595c | 2013-05-15 15:26:42 -0500 | [diff] [blame] | 1936 | if (c->u->u_ste->ste_needs_class_closure) { |
Nick Coghlan | 19d2467 | 2016-12-05 16:47:55 +1000 | [diff] [blame] | 1937 | /* Store __classcell__ into class namespace & return it */ |
Benjamin Peterson | 312595c | 2013-05-15 15:26:42 -0500 | [diff] [blame] | 1938 | str = PyUnicode_InternFromString("__class__"); |
| 1939 | if (str == NULL) { |
| 1940 | compiler_exit_scope(c); |
| 1941 | return 0; |
| 1942 | } |
| 1943 | i = compiler_lookup_arg(c->u->u_cellvars, str); |
| 1944 | Py_DECREF(str); |
Victor Stinner | 98e818b | 2013-11-05 18:07:34 +0100 | [diff] [blame] | 1945 | if (i < 0) { |
| 1946 | compiler_exit_scope(c); |
| 1947 | return 0; |
| 1948 | } |
Benjamin Peterson | 312595c | 2013-05-15 15:26:42 -0500 | [diff] [blame] | 1949 | assert(i == 0); |
Nick Coghlan | 944368e | 2016-09-11 14:45:49 +1000 | [diff] [blame] | 1950 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1951 | ADDOP_I(c, LOAD_CLOSURE, i); |
Nick Coghlan | 19d2467 | 2016-12-05 16:47:55 +1000 | [diff] [blame] | 1952 | ADDOP(c, DUP_TOP); |
Nick Coghlan | 944368e | 2016-09-11 14:45:49 +1000 | [diff] [blame] | 1953 | str = PyUnicode_InternFromString("__classcell__"); |
| 1954 | if (!str || !compiler_nameop(c, str, Store)) { |
| 1955 | Py_XDECREF(str); |
| 1956 | compiler_exit_scope(c); |
| 1957 | return 0; |
| 1958 | } |
| 1959 | Py_DECREF(str); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1960 | } |
Benjamin Peterson | 312595c | 2013-05-15 15:26:42 -0500 | [diff] [blame] | 1961 | else { |
Nick Coghlan | 19d2467 | 2016-12-05 16:47:55 +1000 | [diff] [blame] | 1962 | /* No methods referenced __class__, so just return None */ |
Serhiy Storchaka | 5ab81d7 | 2016-12-16 16:18:57 +0200 | [diff] [blame] | 1963 | assert(PyDict_GET_SIZE(c->u->u_cellvars) == 0); |
Nick Coghlan | 19d2467 | 2016-12-05 16:47:55 +1000 | [diff] [blame] | 1964 | ADDOP_O(c, LOAD_CONST, Py_None, consts); |
Benjamin Peterson | 312595c | 2013-05-15 15:26:42 -0500 | [diff] [blame] | 1965 | } |
Nick Coghlan | 19d2467 | 2016-12-05 16:47:55 +1000 | [diff] [blame] | 1966 | ADDOP_IN_SCOPE(c, RETURN_VALUE); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1967 | /* create the code object */ |
| 1968 | co = assemble(c, 1); |
| 1969 | } |
| 1970 | /* leave the new scope */ |
| 1971 | compiler_exit_scope(c); |
| 1972 | if (co == NULL) |
| 1973 | return 0; |
Guido van Rossum | d59da4b | 2007-05-22 18:11:13 +0000 | [diff] [blame] | 1974 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1975 | /* 2. load the 'build_class' function */ |
| 1976 | ADDOP(c, LOAD_BUILD_CLASS); |
| 1977 | |
| 1978 | /* 3. load a function (or closure) made from the code object */ |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 1979 | compiler_make_closure(c, co, 0, NULL); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1980 | Py_DECREF(co); |
| 1981 | |
| 1982 | /* 4. load class name */ |
| 1983 | ADDOP_O(c, LOAD_CONST, s->v.ClassDef.name, consts); |
| 1984 | |
| 1985 | /* 5. generate the rest of the code for the call */ |
| 1986 | if (!compiler_call_helper(c, 2, |
| 1987 | s->v.ClassDef.bases, |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 1988 | s->v.ClassDef.keywords)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 1989 | return 0; |
| 1990 | |
| 1991 | /* 6. apply decorators */ |
| 1992 | for (i = 0; i < asdl_seq_LEN(decos); i++) { |
| 1993 | ADDOP_I(c, CALL_FUNCTION, 1); |
| 1994 | } |
| 1995 | |
| 1996 | /* 7. store into <name> */ |
| 1997 | if (!compiler_nameop(c, s->v.ClassDef.name, Store)) |
| 1998 | return 0; |
| 1999 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2000 | } |
| 2001 | |
| 2002 | static int |
Serhiy Storchaka | 36ff451 | 2017-06-11 14:50:22 +0300 | [diff] [blame] | 2003 | cmpop(cmpop_ty op) |
| 2004 | { |
| 2005 | switch (op) { |
| 2006 | case Eq: |
| 2007 | return PyCmp_EQ; |
| 2008 | case NotEq: |
| 2009 | return PyCmp_NE; |
| 2010 | case Lt: |
| 2011 | return PyCmp_LT; |
| 2012 | case LtE: |
| 2013 | return PyCmp_LE; |
| 2014 | case Gt: |
| 2015 | return PyCmp_GT; |
| 2016 | case GtE: |
| 2017 | return PyCmp_GE; |
| 2018 | case Is: |
| 2019 | return PyCmp_IS; |
| 2020 | case IsNot: |
| 2021 | return PyCmp_IS_NOT; |
| 2022 | case In: |
| 2023 | return PyCmp_IN; |
| 2024 | case NotIn: |
| 2025 | return PyCmp_NOT_IN; |
| 2026 | default: |
| 2027 | return PyCmp_BAD; |
| 2028 | } |
| 2029 | } |
| 2030 | |
| 2031 | static int |
| 2032 | compiler_jump_if(struct compiler *c, expr_ty e, basicblock *next, int cond) |
| 2033 | { |
| 2034 | switch (e->kind) { |
| 2035 | case UnaryOp_kind: |
| 2036 | if (e->v.UnaryOp.op == Not) |
| 2037 | return compiler_jump_if(c, e->v.UnaryOp.operand, next, !cond); |
| 2038 | /* fallback to general implementation */ |
| 2039 | break; |
| 2040 | case BoolOp_kind: { |
| 2041 | asdl_seq *s = e->v.BoolOp.values; |
| 2042 | Py_ssize_t i, n = asdl_seq_LEN(s) - 1; |
| 2043 | assert(n >= 0); |
| 2044 | int cond2 = e->v.BoolOp.op == Or; |
| 2045 | basicblock *next2 = next; |
| 2046 | if (!cond2 != !cond) { |
| 2047 | next2 = compiler_new_block(c); |
| 2048 | if (next2 == NULL) |
| 2049 | return 0; |
| 2050 | } |
| 2051 | for (i = 0; i < n; ++i) { |
| 2052 | if (!compiler_jump_if(c, (expr_ty)asdl_seq_GET(s, i), next2, cond2)) |
| 2053 | return 0; |
| 2054 | } |
| 2055 | if (!compiler_jump_if(c, (expr_ty)asdl_seq_GET(s, n), next, cond)) |
| 2056 | return 0; |
| 2057 | if (next2 != next) |
| 2058 | compiler_use_next_block(c, next2); |
| 2059 | return 1; |
| 2060 | } |
| 2061 | case IfExp_kind: { |
| 2062 | basicblock *end, *next2; |
| 2063 | end = compiler_new_block(c); |
| 2064 | if (end == NULL) |
| 2065 | return 0; |
| 2066 | next2 = compiler_new_block(c); |
| 2067 | if (next2 == NULL) |
| 2068 | return 0; |
| 2069 | if (!compiler_jump_if(c, e->v.IfExp.test, next2, 0)) |
| 2070 | return 0; |
| 2071 | if (!compiler_jump_if(c, e->v.IfExp.body, next, cond)) |
| 2072 | return 0; |
| 2073 | ADDOP_JREL(c, JUMP_FORWARD, end); |
| 2074 | compiler_use_next_block(c, next2); |
| 2075 | if (!compiler_jump_if(c, e->v.IfExp.orelse, next, cond)) |
| 2076 | return 0; |
| 2077 | compiler_use_next_block(c, end); |
| 2078 | return 1; |
| 2079 | } |
| 2080 | case Compare_kind: { |
| 2081 | Py_ssize_t i, n = asdl_seq_LEN(e->v.Compare.ops) - 1; |
| 2082 | if (n > 0) { |
| 2083 | basicblock *cleanup = compiler_new_block(c); |
| 2084 | if (cleanup == NULL) |
| 2085 | return 0; |
| 2086 | VISIT(c, expr, e->v.Compare.left); |
| 2087 | for (i = 0; i < n; i++) { |
| 2088 | VISIT(c, expr, |
| 2089 | (expr_ty)asdl_seq_GET(e->v.Compare.comparators, i)); |
| 2090 | ADDOP(c, DUP_TOP); |
| 2091 | ADDOP(c, ROT_THREE); |
| 2092 | ADDOP_I(c, COMPARE_OP, |
| 2093 | cmpop((cmpop_ty)(asdl_seq_GET(e->v.Compare.ops, i)))); |
| 2094 | ADDOP_JABS(c, POP_JUMP_IF_FALSE, cleanup); |
| 2095 | NEXT_BLOCK(c); |
| 2096 | } |
| 2097 | VISIT(c, expr, (expr_ty)asdl_seq_GET(e->v.Compare.comparators, n)); |
| 2098 | ADDOP_I(c, COMPARE_OP, |
| 2099 | cmpop((cmpop_ty)(asdl_seq_GET(e->v.Compare.ops, n)))); |
| 2100 | ADDOP_JABS(c, cond ? POP_JUMP_IF_TRUE : POP_JUMP_IF_FALSE, next); |
| 2101 | basicblock *end = compiler_new_block(c); |
| 2102 | if (end == NULL) |
| 2103 | return 0; |
| 2104 | ADDOP_JREL(c, JUMP_FORWARD, end); |
| 2105 | compiler_use_next_block(c, cleanup); |
| 2106 | ADDOP(c, POP_TOP); |
| 2107 | if (!cond) { |
| 2108 | ADDOP_JREL(c, JUMP_FORWARD, next); |
| 2109 | } |
| 2110 | compiler_use_next_block(c, end); |
| 2111 | return 1; |
| 2112 | } |
| 2113 | /* fallback to general implementation */ |
| 2114 | break; |
| 2115 | } |
| 2116 | default: |
| 2117 | /* fallback to general implementation */ |
| 2118 | break; |
| 2119 | } |
| 2120 | |
| 2121 | /* general implementation */ |
| 2122 | VISIT(c, expr, e); |
| 2123 | ADDOP_JABS(c, cond ? POP_JUMP_IF_TRUE : POP_JUMP_IF_FALSE, next); |
| 2124 | return 1; |
| 2125 | } |
| 2126 | |
| 2127 | static int |
Thomas Wouters | dca3b9c | 2006-02-27 00:24:13 +0000 | [diff] [blame] | 2128 | compiler_ifexp(struct compiler *c, expr_ty e) |
| 2129 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2130 | basicblock *end, *next; |
| 2131 | |
| 2132 | assert(e->kind == IfExp_kind); |
| 2133 | end = compiler_new_block(c); |
| 2134 | if (end == NULL) |
| 2135 | return 0; |
| 2136 | next = compiler_new_block(c); |
| 2137 | if (next == NULL) |
| 2138 | return 0; |
Serhiy Storchaka | 36ff451 | 2017-06-11 14:50:22 +0300 | [diff] [blame] | 2139 | if (!compiler_jump_if(c, e->v.IfExp.test, next, 0)) |
| 2140 | return 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2141 | VISIT(c, expr, e->v.IfExp.body); |
| 2142 | ADDOP_JREL(c, JUMP_FORWARD, end); |
| 2143 | compiler_use_next_block(c, next); |
| 2144 | VISIT(c, expr, e->v.IfExp.orelse); |
| 2145 | compiler_use_next_block(c, end); |
| 2146 | return 1; |
Thomas Wouters | dca3b9c | 2006-02-27 00:24:13 +0000 | [diff] [blame] | 2147 | } |
| 2148 | |
| 2149 | static int |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2150 | compiler_lambda(struct compiler *c, expr_ty e) |
| 2151 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2152 | PyCodeObject *co; |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 2153 | PyObject *qualname; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2154 | static identifier name; |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 2155 | Py_ssize_t funcflags; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2156 | arguments_ty args = e->v.Lambda.args; |
| 2157 | assert(e->kind == Lambda_kind); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2158 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2159 | if (!name) { |
| 2160 | name = PyUnicode_InternFromString("<lambda>"); |
| 2161 | if (!name) |
| 2162 | return 0; |
| 2163 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2164 | |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 2165 | funcflags = compiler_default_arguments(c, args); |
| 2166 | if (funcflags == -1) { |
| 2167 | return 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2168 | } |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 2169 | |
Benjamin Peterson | 6b4f780 | 2013-10-20 17:50:28 -0400 | [diff] [blame] | 2170 | if (!compiler_enter_scope(c, name, COMPILER_SCOPE_LAMBDA, |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 2171 | (void *)e, e->lineno)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2172 | return 0; |
Neal Norwitz | 4737b23 | 2005-11-19 23:58:29 +0000 | [diff] [blame] | 2173 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2174 | /* Make None the first constant, so the lambda can't have a |
| 2175 | docstring. */ |
| 2176 | if (compiler_add_o(c, c->u->u_consts, Py_None) < 0) |
| 2177 | return 0; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2178 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2179 | c->u->u_argcount = asdl_seq_LEN(args->args); |
| 2180 | c->u->u_kwonlyargcount = asdl_seq_LEN(args->kwonlyargs); |
| 2181 | VISIT_IN_SCOPE(c, expr, e->v.Lambda.body); |
| 2182 | if (c->u->u_ste->ste_generator) { |
Serhiy Storchaka | c775ad6 | 2015-03-11 18:20:35 +0200 | [diff] [blame] | 2183 | co = assemble(c, 0); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2184 | } |
| 2185 | else { |
| 2186 | ADDOP_IN_SCOPE(c, RETURN_VALUE); |
Serhiy Storchaka | c775ad6 | 2015-03-11 18:20:35 +0200 | [diff] [blame] | 2187 | co = assemble(c, 1); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2188 | } |
Benjamin Peterson | 6b4f780 | 2013-10-20 17:50:28 -0400 | [diff] [blame] | 2189 | qualname = c->u->u_qualname; |
| 2190 | Py_INCREF(qualname); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2191 | compiler_exit_scope(c); |
Benjamin Peterson | 6b4f780 | 2013-10-20 17:50:28 -0400 | [diff] [blame] | 2192 | if (co == NULL) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2193 | return 0; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2194 | |
Serhiy Storchaka | 64204de | 2016-06-12 17:36:24 +0300 | [diff] [blame] | 2195 | compiler_make_closure(c, co, funcflags, qualname); |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 2196 | Py_DECREF(qualname); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2197 | Py_DECREF(co); |
| 2198 | |
| 2199 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2200 | } |
| 2201 | |
| 2202 | static int |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2203 | compiler_if(struct compiler *c, stmt_ty s) |
| 2204 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2205 | basicblock *end, *next; |
| 2206 | int constant; |
| 2207 | assert(s->kind == If_kind); |
| 2208 | end = compiler_new_block(c); |
| 2209 | if (end == NULL) |
| 2210 | return 0; |
| 2211 | |
Georg Brandl | 8334fd9 | 2010-12-04 10:26:46 +0000 | [diff] [blame] | 2212 | constant = expr_constant(c, s->v.If.test); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2213 | /* constant = 0: "if 0" |
| 2214 | * constant = 1: "if 1", "if 2", ... |
| 2215 | * constant = -1: rest */ |
| 2216 | if (constant == 0) { |
| 2217 | if (s->v.If.orelse) |
| 2218 | VISIT_SEQ(c, stmt, s->v.If.orelse); |
| 2219 | } else if (constant == 1) { |
| 2220 | VISIT_SEQ(c, stmt, s->v.If.body); |
| 2221 | } else { |
Antoine Pitrou | e7811fc | 2014-09-18 03:06:50 +0200 | [diff] [blame] | 2222 | if (asdl_seq_LEN(s->v.If.orelse)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2223 | next = compiler_new_block(c); |
| 2224 | if (next == NULL) |
| 2225 | return 0; |
| 2226 | } |
| 2227 | else |
| 2228 | next = end; |
Serhiy Storchaka | 36ff451 | 2017-06-11 14:50:22 +0300 | [diff] [blame] | 2229 | if (!compiler_jump_if(c, s->v.If.test, next, 0)) |
| 2230 | return 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2231 | VISIT_SEQ(c, stmt, s->v.If.body); |
Antoine Pitrou | e7811fc | 2014-09-18 03:06:50 +0200 | [diff] [blame] | 2232 | if (asdl_seq_LEN(s->v.If.orelse)) { |
| 2233 | ADDOP_JREL(c, JUMP_FORWARD, end); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2234 | compiler_use_next_block(c, next); |
| 2235 | VISIT_SEQ(c, stmt, s->v.If.orelse); |
| 2236 | } |
| 2237 | } |
| 2238 | compiler_use_next_block(c, end); |
| 2239 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2240 | } |
| 2241 | |
| 2242 | static int |
| 2243 | compiler_for(struct compiler *c, stmt_ty s) |
| 2244 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2245 | basicblock *start, *cleanup, *end; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2246 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2247 | start = compiler_new_block(c); |
| 2248 | cleanup = compiler_new_block(c); |
| 2249 | end = compiler_new_block(c); |
| 2250 | if (start == NULL || end == NULL || cleanup == NULL) |
| 2251 | return 0; |
| 2252 | ADDOP_JREL(c, SETUP_LOOP, end); |
| 2253 | if (!compiler_push_fblock(c, LOOP, start)) |
| 2254 | return 0; |
| 2255 | VISIT(c, expr, s->v.For.iter); |
| 2256 | ADDOP(c, GET_ITER); |
| 2257 | compiler_use_next_block(c, start); |
| 2258 | ADDOP_JREL(c, FOR_ITER, cleanup); |
| 2259 | VISIT(c, expr, s->v.For.target); |
| 2260 | VISIT_SEQ(c, stmt, s->v.For.body); |
| 2261 | ADDOP_JABS(c, JUMP_ABSOLUTE, start); |
| 2262 | compiler_use_next_block(c, cleanup); |
| 2263 | ADDOP(c, POP_BLOCK); |
| 2264 | compiler_pop_fblock(c, LOOP, start); |
| 2265 | VISIT_SEQ(c, stmt, s->v.For.orelse); |
| 2266 | compiler_use_next_block(c, end); |
| 2267 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2268 | } |
| 2269 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 2270 | |
| 2271 | static int |
| 2272 | compiler_async_for(struct compiler *c, stmt_ty s) |
| 2273 | { |
Yury Selivanov | 52c4e7c | 2016-09-09 10:36:01 -0700 | [diff] [blame] | 2274 | _Py_IDENTIFIER(StopAsyncIteration); |
| 2275 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 2276 | basicblock *try, *except, *end, *after_try, *try_cleanup, |
| 2277 | *after_loop, *after_loop_else; |
| 2278 | |
Yury Selivanov | 52c4e7c | 2016-09-09 10:36:01 -0700 | [diff] [blame] | 2279 | PyObject *stop_aiter_error = _PyUnicode_FromId(&PyId_StopAsyncIteration); |
| 2280 | if (stop_aiter_error == NULL) { |
| 2281 | return 0; |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 2282 | } |
| 2283 | |
| 2284 | try = compiler_new_block(c); |
| 2285 | except = compiler_new_block(c); |
| 2286 | end = compiler_new_block(c); |
| 2287 | after_try = compiler_new_block(c); |
| 2288 | try_cleanup = compiler_new_block(c); |
| 2289 | after_loop = compiler_new_block(c); |
| 2290 | after_loop_else = compiler_new_block(c); |
| 2291 | |
| 2292 | if (try == NULL || except == NULL || end == NULL |
| 2293 | || after_try == NULL || try_cleanup == NULL) |
| 2294 | return 0; |
| 2295 | |
| 2296 | ADDOP_JREL(c, SETUP_LOOP, after_loop); |
| 2297 | if (!compiler_push_fblock(c, LOOP, try)) |
| 2298 | return 0; |
| 2299 | |
| 2300 | VISIT(c, expr, s->v.AsyncFor.iter); |
| 2301 | ADDOP(c, GET_AITER); |
| 2302 | ADDOP_O(c, LOAD_CONST, Py_None, consts); |
| 2303 | ADDOP(c, YIELD_FROM); |
| 2304 | |
| 2305 | compiler_use_next_block(c, try); |
| 2306 | |
| 2307 | |
| 2308 | ADDOP_JREL(c, SETUP_EXCEPT, except); |
| 2309 | if (!compiler_push_fblock(c, EXCEPT, try)) |
| 2310 | return 0; |
| 2311 | |
| 2312 | ADDOP(c, GET_ANEXT); |
| 2313 | ADDOP_O(c, LOAD_CONST, Py_None, consts); |
| 2314 | ADDOP(c, YIELD_FROM); |
| 2315 | VISIT(c, expr, s->v.AsyncFor.target); |
| 2316 | ADDOP(c, POP_BLOCK); |
| 2317 | compiler_pop_fblock(c, EXCEPT, try); |
| 2318 | ADDOP_JREL(c, JUMP_FORWARD, after_try); |
| 2319 | |
| 2320 | |
| 2321 | compiler_use_next_block(c, except); |
| 2322 | ADDOP(c, DUP_TOP); |
Yury Selivanov | 52c4e7c | 2016-09-09 10:36:01 -0700 | [diff] [blame] | 2323 | ADDOP_O(c, LOAD_GLOBAL, stop_aiter_error, names); |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 2324 | ADDOP_I(c, COMPARE_OP, PyCmp_EXC_MATCH); |
| 2325 | ADDOP_JABS(c, POP_JUMP_IF_FALSE, try_cleanup); |
| 2326 | |
| 2327 | ADDOP(c, POP_TOP); |
| 2328 | ADDOP(c, POP_TOP); |
| 2329 | ADDOP(c, POP_TOP); |
| 2330 | ADDOP(c, POP_EXCEPT); /* for SETUP_EXCEPT */ |
| 2331 | ADDOP(c, POP_BLOCK); /* for SETUP_LOOP */ |
| 2332 | ADDOP_JABS(c, JUMP_ABSOLUTE, after_loop_else); |
| 2333 | |
| 2334 | |
| 2335 | compiler_use_next_block(c, try_cleanup); |
| 2336 | ADDOP(c, END_FINALLY); |
| 2337 | |
| 2338 | compiler_use_next_block(c, after_try); |
| 2339 | VISIT_SEQ(c, stmt, s->v.AsyncFor.body); |
| 2340 | ADDOP_JABS(c, JUMP_ABSOLUTE, try); |
| 2341 | |
| 2342 | ADDOP(c, POP_BLOCK); /* for SETUP_LOOP */ |
| 2343 | compiler_pop_fblock(c, LOOP, try); |
| 2344 | |
| 2345 | compiler_use_next_block(c, after_loop); |
| 2346 | ADDOP_JABS(c, JUMP_ABSOLUTE, end); |
| 2347 | |
| 2348 | compiler_use_next_block(c, after_loop_else); |
| 2349 | VISIT_SEQ(c, stmt, s->v.For.orelse); |
| 2350 | |
| 2351 | compiler_use_next_block(c, end); |
| 2352 | |
| 2353 | return 1; |
| 2354 | } |
| 2355 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2356 | static int |
| 2357 | compiler_while(struct compiler *c, stmt_ty s) |
| 2358 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2359 | basicblock *loop, *orelse, *end, *anchor = NULL; |
Georg Brandl | 8334fd9 | 2010-12-04 10:26:46 +0000 | [diff] [blame] | 2360 | int constant = expr_constant(c, s->v.While.test); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2361 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2362 | if (constant == 0) { |
| 2363 | if (s->v.While.orelse) |
| 2364 | VISIT_SEQ(c, stmt, s->v.While.orelse); |
| 2365 | return 1; |
| 2366 | } |
| 2367 | loop = compiler_new_block(c); |
| 2368 | end = compiler_new_block(c); |
| 2369 | if (constant == -1) { |
| 2370 | anchor = compiler_new_block(c); |
| 2371 | if (anchor == NULL) |
| 2372 | return 0; |
| 2373 | } |
| 2374 | if (loop == NULL || end == NULL) |
| 2375 | return 0; |
| 2376 | if (s->v.While.orelse) { |
| 2377 | orelse = compiler_new_block(c); |
| 2378 | if (orelse == NULL) |
| 2379 | return 0; |
| 2380 | } |
| 2381 | else |
| 2382 | orelse = NULL; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2383 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2384 | ADDOP_JREL(c, SETUP_LOOP, end); |
| 2385 | compiler_use_next_block(c, loop); |
| 2386 | if (!compiler_push_fblock(c, LOOP, loop)) |
| 2387 | return 0; |
| 2388 | if (constant == -1) { |
Serhiy Storchaka | 36ff451 | 2017-06-11 14:50:22 +0300 | [diff] [blame] | 2389 | if (!compiler_jump_if(c, s->v.While.test, anchor, 0)) |
| 2390 | return 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2391 | } |
| 2392 | VISIT_SEQ(c, stmt, s->v.While.body); |
| 2393 | ADDOP_JABS(c, JUMP_ABSOLUTE, loop); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2394 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2395 | /* XXX should the two POP instructions be in a separate block |
| 2396 | if there is no else clause ? |
| 2397 | */ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2398 | |
Benjamin Peterson | 3cda0ed | 2014-12-13 16:06:19 -0500 | [diff] [blame] | 2399 | if (constant == -1) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2400 | compiler_use_next_block(c, anchor); |
Benjamin Peterson | 3cda0ed | 2014-12-13 16:06:19 -0500 | [diff] [blame] | 2401 | ADDOP(c, POP_BLOCK); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2402 | compiler_pop_fblock(c, LOOP, loop); |
| 2403 | if (orelse != NULL) /* what if orelse is just pass? */ |
| 2404 | VISIT_SEQ(c, stmt, s->v.While.orelse); |
| 2405 | compiler_use_next_block(c, end); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2406 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2407 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2408 | } |
| 2409 | |
| 2410 | static int |
| 2411 | compiler_continue(struct compiler *c) |
| 2412 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2413 | static const char LOOP_ERROR_MSG[] = "'continue' not properly in loop"; |
| 2414 | static const char IN_FINALLY_ERROR_MSG[] = |
| 2415 | "'continue' not supported inside 'finally' clause"; |
| 2416 | int i; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2417 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2418 | if (!c->u->u_nfblocks) |
| 2419 | return compiler_error(c, LOOP_ERROR_MSG); |
| 2420 | i = c->u->u_nfblocks - 1; |
| 2421 | switch (c->u->u_fblock[i].fb_type) { |
| 2422 | case LOOP: |
| 2423 | ADDOP_JABS(c, JUMP_ABSOLUTE, c->u->u_fblock[i].fb_block); |
| 2424 | break; |
| 2425 | case EXCEPT: |
| 2426 | case FINALLY_TRY: |
| 2427 | while (--i >= 0 && c->u->u_fblock[i].fb_type != LOOP) { |
| 2428 | /* Prevent continue anywhere under a finally |
| 2429 | even if hidden in a sub-try or except. */ |
| 2430 | if (c->u->u_fblock[i].fb_type == FINALLY_END) |
| 2431 | return compiler_error(c, IN_FINALLY_ERROR_MSG); |
| 2432 | } |
| 2433 | if (i == -1) |
| 2434 | return compiler_error(c, LOOP_ERROR_MSG); |
| 2435 | ADDOP_JABS(c, CONTINUE_LOOP, c->u->u_fblock[i].fb_block); |
| 2436 | break; |
| 2437 | case FINALLY_END: |
| 2438 | return compiler_error(c, IN_FINALLY_ERROR_MSG); |
| 2439 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2440 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2441 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2442 | } |
| 2443 | |
| 2444 | /* Code generated for "try: <body> finally: <finalbody>" is as follows: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2445 | |
| 2446 | SETUP_FINALLY L |
| 2447 | <code for body> |
| 2448 | POP_BLOCK |
| 2449 | LOAD_CONST <None> |
| 2450 | L: <code for finalbody> |
| 2451 | END_FINALLY |
| 2452 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2453 | The special instructions use the block stack. Each block |
| 2454 | stack entry contains the instruction that created it (here |
| 2455 | SETUP_FINALLY), the level of the value stack at the time the |
| 2456 | block stack entry was created, and a label (here L). |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2457 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2458 | SETUP_FINALLY: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2459 | Pushes the current value stack level and the label |
| 2460 | onto the block stack. |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2461 | POP_BLOCK: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2462 | Pops en entry from the block stack, and pops the value |
| 2463 | stack until its level is the same as indicated on the |
| 2464 | block stack. (The label is ignored.) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2465 | END_FINALLY: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2466 | Pops a variable number of entries from the *value* stack |
| 2467 | and re-raises the exception they specify. The number of |
| 2468 | entries popped depends on the (pseudo) exception type. |
| 2469 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2470 | The block stack is unwound when an exception is raised: |
| 2471 | when a SETUP_FINALLY entry is found, the exception is pushed |
| 2472 | onto the value stack (and the exception condition is cleared), |
| 2473 | and the interpreter jumps to the label gotten from the block |
| 2474 | stack. |
| 2475 | */ |
| 2476 | |
| 2477 | static int |
| 2478 | compiler_try_finally(struct compiler *c, stmt_ty s) |
| 2479 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2480 | basicblock *body, *end; |
| 2481 | body = compiler_new_block(c); |
| 2482 | end = compiler_new_block(c); |
| 2483 | if (body == NULL || end == NULL) |
| 2484 | return 0; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2485 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2486 | ADDOP_JREL(c, SETUP_FINALLY, end); |
| 2487 | compiler_use_next_block(c, body); |
| 2488 | if (!compiler_push_fblock(c, FINALLY_TRY, body)) |
| 2489 | return 0; |
Benjamin Peterson | 43af12b | 2011-05-29 11:43:10 -0500 | [diff] [blame] | 2490 | if (s->v.Try.handlers && asdl_seq_LEN(s->v.Try.handlers)) { |
| 2491 | if (!compiler_try_except(c, s)) |
| 2492 | return 0; |
| 2493 | } |
| 2494 | else { |
| 2495 | VISIT_SEQ(c, stmt, s->v.Try.body); |
| 2496 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2497 | ADDOP(c, POP_BLOCK); |
| 2498 | compiler_pop_fblock(c, FINALLY_TRY, body); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2499 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2500 | ADDOP_O(c, LOAD_CONST, Py_None, consts); |
| 2501 | compiler_use_next_block(c, end); |
| 2502 | if (!compiler_push_fblock(c, FINALLY_END, end)) |
| 2503 | return 0; |
Benjamin Peterson | 43af12b | 2011-05-29 11:43:10 -0500 | [diff] [blame] | 2504 | VISIT_SEQ(c, stmt, s->v.Try.finalbody); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2505 | ADDOP(c, END_FINALLY); |
| 2506 | compiler_pop_fblock(c, FINALLY_END, end); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2507 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2508 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2509 | } |
| 2510 | |
| 2511 | /* |
Jeffrey Yasskin | 9de7ec7 | 2009-02-25 02:25:04 +0000 | [diff] [blame] | 2512 | Code generated for "try: S except E1 as V1: S1 except E2 as V2: S2 ...": |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2513 | (The contents of the value stack is shown in [], with the top |
| 2514 | at the right; 'tb' is trace-back info, 'val' the exception's |
| 2515 | associated value, and 'exc' the exception.) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2516 | |
| 2517 | Value stack Label Instruction Argument |
| 2518 | [] SETUP_EXCEPT L1 |
| 2519 | [] <code for S> |
| 2520 | [] POP_BLOCK |
| 2521 | [] JUMP_FORWARD L0 |
| 2522 | |
| 2523 | [tb, val, exc] L1: DUP ) |
| 2524 | [tb, val, exc, exc] <evaluate E1> ) |
| 2525 | [tb, val, exc, exc, E1] COMPARE_OP EXC_MATCH ) only if E1 |
| 2526 | [tb, val, exc, 1-or-0] POP_JUMP_IF_FALSE L2 ) |
| 2527 | [tb, val, exc] POP |
| 2528 | [tb, val] <assign to V1> (or POP if no V1) |
| 2529 | [tb] POP |
| 2530 | [] <code for S1> |
| 2531 | JUMP_FORWARD L0 |
| 2532 | |
| 2533 | [tb, val, exc] L2: DUP |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2534 | .............................etc....................... |
| 2535 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2536 | [tb, val, exc] Ln+1: END_FINALLY # re-raise exception |
| 2537 | |
| 2538 | [] L0: <next statement> |
| 2539 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2540 | Of course, parts are not generated if Vi or Ei is not present. |
| 2541 | */ |
| 2542 | static int |
| 2543 | compiler_try_except(struct compiler *c, stmt_ty s) |
| 2544 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2545 | basicblock *body, *orelse, *except, *end; |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 2546 | Py_ssize_t i, n; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2547 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2548 | body = compiler_new_block(c); |
| 2549 | except = compiler_new_block(c); |
| 2550 | orelse = compiler_new_block(c); |
| 2551 | end = compiler_new_block(c); |
| 2552 | if (body == NULL || except == NULL || orelse == NULL || end == NULL) |
| 2553 | return 0; |
| 2554 | ADDOP_JREL(c, SETUP_EXCEPT, except); |
| 2555 | compiler_use_next_block(c, body); |
| 2556 | if (!compiler_push_fblock(c, EXCEPT, body)) |
| 2557 | return 0; |
Benjamin Peterson | 43af12b | 2011-05-29 11:43:10 -0500 | [diff] [blame] | 2558 | VISIT_SEQ(c, stmt, s->v.Try.body); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2559 | ADDOP(c, POP_BLOCK); |
| 2560 | compiler_pop_fblock(c, EXCEPT, body); |
| 2561 | ADDOP_JREL(c, JUMP_FORWARD, orelse); |
Benjamin Peterson | 43af12b | 2011-05-29 11:43:10 -0500 | [diff] [blame] | 2562 | n = asdl_seq_LEN(s->v.Try.handlers); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2563 | compiler_use_next_block(c, except); |
| 2564 | for (i = 0; i < n; i++) { |
| 2565 | excepthandler_ty handler = (excepthandler_ty)asdl_seq_GET( |
Benjamin Peterson | 43af12b | 2011-05-29 11:43:10 -0500 | [diff] [blame] | 2566 | s->v.Try.handlers, i); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2567 | if (!handler->v.ExceptHandler.type && i < n-1) |
| 2568 | return compiler_error(c, "default 'except:' must be last"); |
| 2569 | c->u->u_lineno_set = 0; |
| 2570 | c->u->u_lineno = handler->lineno; |
Benjamin Peterson | d4efd9e | 2010-09-20 23:02:10 +0000 | [diff] [blame] | 2571 | c->u->u_col_offset = handler->col_offset; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2572 | except = compiler_new_block(c); |
| 2573 | if (except == NULL) |
| 2574 | return 0; |
| 2575 | if (handler->v.ExceptHandler.type) { |
| 2576 | ADDOP(c, DUP_TOP); |
| 2577 | VISIT(c, expr, handler->v.ExceptHandler.type); |
| 2578 | ADDOP_I(c, COMPARE_OP, PyCmp_EXC_MATCH); |
| 2579 | ADDOP_JABS(c, POP_JUMP_IF_FALSE, except); |
| 2580 | } |
| 2581 | ADDOP(c, POP_TOP); |
| 2582 | if (handler->v.ExceptHandler.name) { |
Benjamin Peterson | 74897ba | 2011-05-27 14:10:24 -0500 | [diff] [blame] | 2583 | basicblock *cleanup_end, *cleanup_body; |
Guido van Rossum | b940e11 | 2007-01-10 16:19:56 +0000 | [diff] [blame] | 2584 | |
Benjamin Peterson | 74897ba | 2011-05-27 14:10:24 -0500 | [diff] [blame] | 2585 | cleanup_end = compiler_new_block(c); |
| 2586 | cleanup_body = compiler_new_block(c); |
Benjamin Peterson | 0a5dad9 | 2011-05-27 14:17:04 -0500 | [diff] [blame] | 2587 | if (!(cleanup_end || cleanup_body)) |
Benjamin Peterson | 74897ba | 2011-05-27 14:10:24 -0500 | [diff] [blame] | 2588 | return 0; |
Guido van Rossum | b940e11 | 2007-01-10 16:19:56 +0000 | [diff] [blame] | 2589 | |
Benjamin Peterson | 74897ba | 2011-05-27 14:10:24 -0500 | [diff] [blame] | 2590 | compiler_nameop(c, handler->v.ExceptHandler.name, Store); |
| 2591 | ADDOP(c, POP_TOP); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2592 | |
Benjamin Peterson | 74897ba | 2011-05-27 14:10:24 -0500 | [diff] [blame] | 2593 | /* |
| 2594 | try: |
Ezio Melotti | 1b6424f | 2013-04-19 07:10:09 +0300 | [diff] [blame] | 2595 | # body |
Benjamin Peterson | 74897ba | 2011-05-27 14:10:24 -0500 | [diff] [blame] | 2596 | except type as name: |
Ezio Melotti | 1b6424f | 2013-04-19 07:10:09 +0300 | [diff] [blame] | 2597 | try: |
| 2598 | # body |
| 2599 | finally: |
| 2600 | name = None |
| 2601 | del name |
Benjamin Peterson | 74897ba | 2011-05-27 14:10:24 -0500 | [diff] [blame] | 2602 | */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2603 | |
Benjamin Peterson | 74897ba | 2011-05-27 14:10:24 -0500 | [diff] [blame] | 2604 | /* second try: */ |
| 2605 | ADDOP_JREL(c, SETUP_FINALLY, cleanup_end); |
| 2606 | compiler_use_next_block(c, cleanup_body); |
| 2607 | if (!compiler_push_fblock(c, FINALLY_TRY, cleanup_body)) |
| 2608 | return 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2609 | |
Benjamin Peterson | 74897ba | 2011-05-27 14:10:24 -0500 | [diff] [blame] | 2610 | /* second # body */ |
| 2611 | VISIT_SEQ(c, stmt, handler->v.ExceptHandler.body); |
| 2612 | ADDOP(c, POP_BLOCK); |
| 2613 | ADDOP(c, POP_EXCEPT); |
| 2614 | compiler_pop_fblock(c, FINALLY_TRY, cleanup_body); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2615 | |
Benjamin Peterson | 74897ba | 2011-05-27 14:10:24 -0500 | [diff] [blame] | 2616 | /* finally: */ |
| 2617 | ADDOP_O(c, LOAD_CONST, Py_None, consts); |
| 2618 | compiler_use_next_block(c, cleanup_end); |
| 2619 | if (!compiler_push_fblock(c, FINALLY_END, cleanup_end)) |
| 2620 | return 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2621 | |
Benjamin Peterson | 74897ba | 2011-05-27 14:10:24 -0500 | [diff] [blame] | 2622 | /* name = None */ |
| 2623 | ADDOP_O(c, LOAD_CONST, Py_None, consts); |
| 2624 | compiler_nameop(c, handler->v.ExceptHandler.name, Store); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2625 | |
Benjamin Peterson | 74897ba | 2011-05-27 14:10:24 -0500 | [diff] [blame] | 2626 | /* del name */ |
| 2627 | compiler_nameop(c, handler->v.ExceptHandler.name, Del); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2628 | |
Benjamin Peterson | 74897ba | 2011-05-27 14:10:24 -0500 | [diff] [blame] | 2629 | ADDOP(c, END_FINALLY); |
| 2630 | compiler_pop_fblock(c, FINALLY_END, cleanup_end); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2631 | } |
| 2632 | else { |
Benjamin Peterson | 74897ba | 2011-05-27 14:10:24 -0500 | [diff] [blame] | 2633 | basicblock *cleanup_body; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2634 | |
Benjamin Peterson | 74897ba | 2011-05-27 14:10:24 -0500 | [diff] [blame] | 2635 | cleanup_body = compiler_new_block(c); |
Benjamin Peterson | 0a5dad9 | 2011-05-27 14:17:04 -0500 | [diff] [blame] | 2636 | if (!cleanup_body) |
Benjamin Peterson | 74897ba | 2011-05-27 14:10:24 -0500 | [diff] [blame] | 2637 | return 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2638 | |
Guido van Rossum | b940e11 | 2007-01-10 16:19:56 +0000 | [diff] [blame] | 2639 | ADDOP(c, POP_TOP); |
Benjamin Peterson | 74897ba | 2011-05-27 14:10:24 -0500 | [diff] [blame] | 2640 | ADDOP(c, POP_TOP); |
| 2641 | compiler_use_next_block(c, cleanup_body); |
| 2642 | if (!compiler_push_fblock(c, FINALLY_TRY, cleanup_body)) |
| 2643 | return 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2644 | VISIT_SEQ(c, stmt, handler->v.ExceptHandler.body); |
Benjamin Peterson | 74897ba | 2011-05-27 14:10:24 -0500 | [diff] [blame] | 2645 | ADDOP(c, POP_EXCEPT); |
| 2646 | compiler_pop_fblock(c, FINALLY_TRY, cleanup_body); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2647 | } |
| 2648 | ADDOP_JREL(c, JUMP_FORWARD, end); |
| 2649 | compiler_use_next_block(c, except); |
| 2650 | } |
| 2651 | ADDOP(c, END_FINALLY); |
| 2652 | compiler_use_next_block(c, orelse); |
Benjamin Peterson | 43af12b | 2011-05-29 11:43:10 -0500 | [diff] [blame] | 2653 | VISIT_SEQ(c, stmt, s->v.Try.orelse); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2654 | compiler_use_next_block(c, end); |
| 2655 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2656 | } |
| 2657 | |
| 2658 | static int |
Benjamin Peterson | 43af12b | 2011-05-29 11:43:10 -0500 | [diff] [blame] | 2659 | compiler_try(struct compiler *c, stmt_ty s) { |
| 2660 | if (s->v.Try.finalbody && asdl_seq_LEN(s->v.Try.finalbody)) |
| 2661 | return compiler_try_finally(c, s); |
| 2662 | else |
| 2663 | return compiler_try_except(c, s); |
| 2664 | } |
| 2665 | |
| 2666 | |
| 2667 | static int |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2668 | compiler_import_as(struct compiler *c, identifier name, identifier asname) |
| 2669 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2670 | /* The IMPORT_NAME opcode was already generated. This function |
| 2671 | merely needs to bind the result to a name. |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2672 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2673 | If there is a dot in name, we need to split it and emit a |
Serhiy Storchaka | f93234b | 2017-05-09 22:31:05 +0300 | [diff] [blame] | 2674 | IMPORT_FROM for each name. |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2675 | */ |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 2676 | Py_ssize_t dot = PyUnicode_FindChar(name, '.', 0, |
| 2677 | PyUnicode_GET_LENGTH(name), 1); |
| 2678 | if (dot == -2) |
Serhiy Storchaka | 694de3b | 2016-06-15 20:06:07 +0300 | [diff] [blame] | 2679 | return 0; |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 2680 | if (dot != -1) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2681 | /* Consume the base module name to get the first attribute */ |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 2682 | Py_ssize_t pos = dot + 1; |
| 2683 | while (dot != -1) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2684 | PyObject *attr; |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 2685 | dot = PyUnicode_FindChar(name, '.', pos, |
| 2686 | PyUnicode_GET_LENGTH(name), 1); |
| 2687 | if (dot == -2) |
Serhiy Storchaka | 694de3b | 2016-06-15 20:06:07 +0300 | [diff] [blame] | 2688 | return 0; |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 2689 | attr = PyUnicode_Substring(name, pos, |
| 2690 | (dot != -1) ? dot : |
| 2691 | PyUnicode_GET_LENGTH(name)); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2692 | if (!attr) |
Serhiy Storchaka | 694de3b | 2016-06-15 20:06:07 +0300 | [diff] [blame] | 2693 | return 0; |
Serhiy Storchaka | f93234b | 2017-05-09 22:31:05 +0300 | [diff] [blame] | 2694 | ADDOP_O(c, IMPORT_FROM, attr, names); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2695 | Py_DECREF(attr); |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 2696 | pos = dot + 1; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2697 | } |
| 2698 | } |
| 2699 | return compiler_nameop(c, asname, Store); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2700 | } |
| 2701 | |
| 2702 | static int |
| 2703 | compiler_import(struct compiler *c, stmt_ty s) |
| 2704 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2705 | /* The Import node stores a module name like a.b.c as a single |
| 2706 | string. This is convenient for all cases except |
| 2707 | import a.b.c as d |
| 2708 | where we need to parse that string to extract the individual |
| 2709 | module names. |
| 2710 | XXX Perhaps change the representation to make this case simpler? |
| 2711 | */ |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 2712 | Py_ssize_t i, n = asdl_seq_LEN(s->v.Import.names); |
Thomas Wouters | f7f438b | 2006-02-28 16:09:29 +0000 | [diff] [blame] | 2713 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2714 | for (i = 0; i < n; i++) { |
| 2715 | alias_ty alias = (alias_ty)asdl_seq_GET(s->v.Import.names, i); |
| 2716 | int r; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2717 | |
Serhiy Storchaka | ba85d69 | 2017-03-30 09:09:41 +0300 | [diff] [blame] | 2718 | ADDOP_O(c, LOAD_CONST, _PyLong_Zero, consts); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2719 | ADDOP_O(c, LOAD_CONST, Py_None, consts); |
| 2720 | ADDOP_NAME(c, IMPORT_NAME, alias->name, names); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2721 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2722 | if (alias->asname) { |
| 2723 | r = compiler_import_as(c, alias->name, alias->asname); |
| 2724 | if (!r) |
| 2725 | return r; |
| 2726 | } |
| 2727 | else { |
| 2728 | identifier tmp = alias->name; |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 2729 | Py_ssize_t dot = PyUnicode_FindChar( |
| 2730 | alias->name, '.', 0, PyUnicode_GET_LENGTH(alias->name), 1); |
Victor Stinner | 6b64a68 | 2013-07-11 22:50:45 +0200 | [diff] [blame] | 2731 | if (dot != -1) { |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 2732 | tmp = PyUnicode_Substring(alias->name, 0, dot); |
Victor Stinner | 6b64a68 | 2013-07-11 22:50:45 +0200 | [diff] [blame] | 2733 | if (tmp == NULL) |
| 2734 | return 0; |
| 2735 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2736 | r = compiler_nameop(c, tmp, Store); |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 2737 | if (dot != -1) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2738 | Py_DECREF(tmp); |
| 2739 | } |
| 2740 | if (!r) |
| 2741 | return r; |
| 2742 | } |
| 2743 | } |
| 2744 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2745 | } |
| 2746 | |
| 2747 | static int |
| 2748 | compiler_from_import(struct compiler *c, stmt_ty s) |
| 2749 | { |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 2750 | Py_ssize_t i, n = asdl_seq_LEN(s->v.ImportFrom.names); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2751 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2752 | PyObject *names = PyTuple_New(n); |
| 2753 | PyObject *level; |
| 2754 | static PyObject *empty_string; |
Benjamin Peterson | 78565b2 | 2009-06-28 19:19:51 +0000 | [diff] [blame] | 2755 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2756 | if (!empty_string) { |
| 2757 | empty_string = PyUnicode_FromString(""); |
| 2758 | if (!empty_string) |
| 2759 | return 0; |
| 2760 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2761 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2762 | if (!names) |
| 2763 | return 0; |
Thomas Wouters | f7f438b | 2006-02-28 16:09:29 +0000 | [diff] [blame] | 2764 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2765 | level = PyLong_FromLong(s->v.ImportFrom.level); |
| 2766 | if (!level) { |
| 2767 | Py_DECREF(names); |
| 2768 | return 0; |
| 2769 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2770 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2771 | /* build up the names */ |
| 2772 | for (i = 0; i < n; i++) { |
| 2773 | alias_ty alias = (alias_ty)asdl_seq_GET(s->v.ImportFrom.names, i); |
| 2774 | Py_INCREF(alias->name); |
| 2775 | PyTuple_SET_ITEM(names, i, alias->name); |
| 2776 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2777 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2778 | if (s->lineno > c->c_future->ff_lineno && s->v.ImportFrom.module && |
Serhiy Storchaka | f4934ea | 2016-11-16 10:17:58 +0200 | [diff] [blame] | 2779 | _PyUnicode_EqualToASCIIString(s->v.ImportFrom.module, "__future__")) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2780 | Py_DECREF(level); |
| 2781 | Py_DECREF(names); |
| 2782 | return compiler_error(c, "from __future__ imports must occur " |
| 2783 | "at the beginning of the file"); |
| 2784 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2785 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2786 | ADDOP_O(c, LOAD_CONST, level, consts); |
| 2787 | Py_DECREF(level); |
| 2788 | ADDOP_O(c, LOAD_CONST, names, consts); |
| 2789 | Py_DECREF(names); |
| 2790 | if (s->v.ImportFrom.module) { |
| 2791 | ADDOP_NAME(c, IMPORT_NAME, s->v.ImportFrom.module, names); |
| 2792 | } |
| 2793 | else { |
| 2794 | ADDOP_NAME(c, IMPORT_NAME, empty_string, names); |
| 2795 | } |
| 2796 | for (i = 0; i < n; i++) { |
| 2797 | alias_ty alias = (alias_ty)asdl_seq_GET(s->v.ImportFrom.names, i); |
| 2798 | identifier store_name; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2799 | |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 2800 | if (i == 0 && PyUnicode_READ_CHAR(alias->name, 0) == '*') { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2801 | assert(n == 1); |
| 2802 | ADDOP(c, IMPORT_STAR); |
| 2803 | return 1; |
| 2804 | } |
| 2805 | |
| 2806 | ADDOP_NAME(c, IMPORT_FROM, alias->name, names); |
| 2807 | store_name = alias->name; |
| 2808 | if (alias->asname) |
| 2809 | store_name = alias->asname; |
| 2810 | |
| 2811 | if (!compiler_nameop(c, store_name, Store)) { |
| 2812 | Py_DECREF(names); |
| 2813 | return 0; |
| 2814 | } |
| 2815 | } |
| 2816 | /* remove imported module */ |
| 2817 | ADDOP(c, POP_TOP); |
| 2818 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2819 | } |
| 2820 | |
| 2821 | static int |
| 2822 | compiler_assert(struct compiler *c, stmt_ty s) |
| 2823 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2824 | static PyObject *assertion_error = NULL; |
| 2825 | basicblock *end; |
Victor Stinner | 14e461d | 2013-08-26 22:28:21 +0200 | [diff] [blame] | 2826 | PyObject* msg; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2827 | |
Georg Brandl | 8334fd9 | 2010-12-04 10:26:46 +0000 | [diff] [blame] | 2828 | if (c->c_optimize) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2829 | return 1; |
| 2830 | if (assertion_error == NULL) { |
| 2831 | assertion_error = PyUnicode_InternFromString("AssertionError"); |
| 2832 | if (assertion_error == NULL) |
| 2833 | return 0; |
| 2834 | } |
| 2835 | if (s->v.Assert.test->kind == Tuple_kind && |
| 2836 | asdl_seq_LEN(s->v.Assert.test->v.Tuple.elts) > 0) { |
Victor Stinner | 14e461d | 2013-08-26 22:28:21 +0200 | [diff] [blame] | 2837 | msg = PyUnicode_FromString("assertion is always true, " |
| 2838 | "perhaps remove parentheses?"); |
| 2839 | if (msg == NULL) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2840 | return 0; |
Victor Stinner | 14e461d | 2013-08-26 22:28:21 +0200 | [diff] [blame] | 2841 | if (PyErr_WarnExplicitObject(PyExc_SyntaxWarning, msg, |
| 2842 | c->c_filename, c->u->u_lineno, |
| 2843 | NULL, NULL) == -1) { |
| 2844 | Py_DECREF(msg); |
| 2845 | return 0; |
| 2846 | } |
| 2847 | Py_DECREF(msg); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2848 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2849 | end = compiler_new_block(c); |
| 2850 | if (end == NULL) |
| 2851 | return 0; |
Serhiy Storchaka | 36ff451 | 2017-06-11 14:50:22 +0300 | [diff] [blame] | 2852 | if (!compiler_jump_if(c, s->v.Assert.test, end, 1)) |
| 2853 | return 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2854 | ADDOP_O(c, LOAD_GLOBAL, assertion_error, names); |
| 2855 | if (s->v.Assert.msg) { |
| 2856 | VISIT(c, expr, s->v.Assert.msg); |
| 2857 | ADDOP_I(c, CALL_FUNCTION, 1); |
| 2858 | } |
| 2859 | ADDOP_I(c, RAISE_VARARGS, 1); |
| 2860 | compiler_use_next_block(c, end); |
| 2861 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2862 | } |
| 2863 | |
| 2864 | static int |
Victor Stinner | f2c1aa1 | 2016-01-26 00:40:57 +0100 | [diff] [blame] | 2865 | compiler_visit_stmt_expr(struct compiler *c, expr_ty value) |
| 2866 | { |
| 2867 | if (c->c_interactive && c->c_nestlevel <= 1) { |
| 2868 | VISIT(c, expr, value); |
| 2869 | ADDOP(c, PRINT_EXPR); |
| 2870 | return 1; |
| 2871 | } |
| 2872 | |
Serhiy Storchaka | 6a7506a | 2016-06-12 00:39:41 +0300 | [diff] [blame] | 2873 | if (is_const(value)) { |
Victor Stinner | 15a3095 | 2016-02-08 22:45:06 +0100 | [diff] [blame] | 2874 | /* ignore constant statement */ |
Victor Stinner | f2c1aa1 | 2016-01-26 00:40:57 +0100 | [diff] [blame] | 2875 | return 1; |
Victor Stinner | f2c1aa1 | 2016-01-26 00:40:57 +0100 | [diff] [blame] | 2876 | } |
| 2877 | |
| 2878 | VISIT(c, expr, value); |
| 2879 | ADDOP(c, POP_TOP); |
| 2880 | return 1; |
| 2881 | } |
| 2882 | |
| 2883 | static int |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2884 | compiler_visit_stmt(struct compiler *c, stmt_ty s) |
| 2885 | { |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 2886 | Py_ssize_t i, n; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2887 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2888 | /* Always assign a lineno to the next instruction for a stmt. */ |
| 2889 | c->u->u_lineno = s->lineno; |
Benjamin Peterson | d4efd9e | 2010-09-20 23:02:10 +0000 | [diff] [blame] | 2890 | c->u->u_col_offset = s->col_offset; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2891 | c->u->u_lineno_set = 0; |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 2892 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2893 | switch (s->kind) { |
| 2894 | case FunctionDef_kind: |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 2895 | return compiler_function(c, s, 0); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2896 | case ClassDef_kind: |
| 2897 | return compiler_class(c, s); |
| 2898 | case Return_kind: |
| 2899 | if (c->u->u_ste->ste_type != FunctionBlock) |
| 2900 | return compiler_error(c, "'return' outside function"); |
| 2901 | if (s->v.Return.value) { |
Yury Selivanov | eb63645 | 2016-09-08 22:01:51 -0700 | [diff] [blame] | 2902 | if (c->u->u_ste->ste_coroutine && c->u->u_ste->ste_generator) |
| 2903 | return compiler_error( |
| 2904 | c, "'return' with value in async generator"); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2905 | VISIT(c, expr, s->v.Return.value); |
| 2906 | } |
| 2907 | else |
| 2908 | ADDOP_O(c, LOAD_CONST, Py_None, consts); |
| 2909 | ADDOP(c, RETURN_VALUE); |
| 2910 | break; |
| 2911 | case Delete_kind: |
| 2912 | VISIT_SEQ(c, expr, s->v.Delete.targets) |
| 2913 | break; |
| 2914 | case Assign_kind: |
| 2915 | n = asdl_seq_LEN(s->v.Assign.targets); |
| 2916 | VISIT(c, expr, s->v.Assign.value); |
| 2917 | for (i = 0; i < n; i++) { |
| 2918 | if (i < n - 1) |
| 2919 | ADDOP(c, DUP_TOP); |
| 2920 | VISIT(c, expr, |
| 2921 | (expr_ty)asdl_seq_GET(s->v.Assign.targets, i)); |
| 2922 | } |
| 2923 | break; |
| 2924 | case AugAssign_kind: |
| 2925 | return compiler_augassign(c, s); |
Yury Selivanov | f8cb8a1 | 2016-09-08 20:50:03 -0700 | [diff] [blame] | 2926 | case AnnAssign_kind: |
| 2927 | return compiler_annassign(c, s); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2928 | case For_kind: |
| 2929 | return compiler_for(c, s); |
| 2930 | case While_kind: |
| 2931 | return compiler_while(c, s); |
| 2932 | case If_kind: |
| 2933 | return compiler_if(c, s); |
| 2934 | case Raise_kind: |
| 2935 | n = 0; |
| 2936 | if (s->v.Raise.exc) { |
| 2937 | VISIT(c, expr, s->v.Raise.exc); |
| 2938 | n++; |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 2939 | if (s->v.Raise.cause) { |
| 2940 | VISIT(c, expr, s->v.Raise.cause); |
| 2941 | n++; |
| 2942 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2943 | } |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 2944 | ADDOP_I(c, RAISE_VARARGS, (int)n); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2945 | break; |
Benjamin Peterson | 43af12b | 2011-05-29 11:43:10 -0500 | [diff] [blame] | 2946 | case Try_kind: |
| 2947 | return compiler_try(c, s); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2948 | case Assert_kind: |
| 2949 | return compiler_assert(c, s); |
| 2950 | case Import_kind: |
| 2951 | return compiler_import(c, s); |
| 2952 | case ImportFrom_kind: |
| 2953 | return compiler_from_import(c, s); |
| 2954 | case Global_kind: |
| 2955 | case Nonlocal_kind: |
| 2956 | break; |
| 2957 | case Expr_kind: |
Victor Stinner | f2c1aa1 | 2016-01-26 00:40:57 +0100 | [diff] [blame] | 2958 | return compiler_visit_stmt_expr(c, s->v.Expr.value); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2959 | case Pass_kind: |
| 2960 | break; |
| 2961 | case Break_kind: |
| 2962 | if (!compiler_in_loop(c)) |
| 2963 | return compiler_error(c, "'break' outside loop"); |
| 2964 | ADDOP(c, BREAK_LOOP); |
| 2965 | break; |
| 2966 | case Continue_kind: |
| 2967 | return compiler_continue(c); |
| 2968 | case With_kind: |
Benjamin Peterson | bf1bbc1 | 2011-05-27 13:58:08 -0500 | [diff] [blame] | 2969 | return compiler_with(c, s, 0); |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 2970 | case AsyncFunctionDef_kind: |
| 2971 | return compiler_function(c, s, 1); |
| 2972 | case AsyncWith_kind: |
| 2973 | return compiler_async_with(c, s, 0); |
| 2974 | case AsyncFor_kind: |
| 2975 | return compiler_async_for(c, s); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2976 | } |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 2977 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2978 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2979 | } |
| 2980 | |
| 2981 | static int |
| 2982 | unaryop(unaryop_ty op) |
| 2983 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 2984 | switch (op) { |
| 2985 | case Invert: |
| 2986 | return UNARY_INVERT; |
| 2987 | case Not: |
| 2988 | return UNARY_NOT; |
| 2989 | case UAdd: |
| 2990 | return UNARY_POSITIVE; |
| 2991 | case USub: |
| 2992 | return UNARY_NEGATIVE; |
| 2993 | default: |
| 2994 | PyErr_Format(PyExc_SystemError, |
| 2995 | "unary op %d should not be possible", op); |
| 2996 | return 0; |
| 2997 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2998 | } |
| 2999 | |
| 3000 | static int |
| 3001 | binop(struct compiler *c, operator_ty op) |
| 3002 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3003 | switch (op) { |
| 3004 | case Add: |
| 3005 | return BINARY_ADD; |
| 3006 | case Sub: |
| 3007 | return BINARY_SUBTRACT; |
| 3008 | case Mult: |
| 3009 | return BINARY_MULTIPLY; |
Benjamin Peterson | d51374e | 2014-04-09 23:55:56 -0400 | [diff] [blame] | 3010 | case MatMult: |
| 3011 | return BINARY_MATRIX_MULTIPLY; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3012 | case Div: |
| 3013 | return BINARY_TRUE_DIVIDE; |
| 3014 | case Mod: |
| 3015 | return BINARY_MODULO; |
| 3016 | case Pow: |
| 3017 | return BINARY_POWER; |
| 3018 | case LShift: |
| 3019 | return BINARY_LSHIFT; |
| 3020 | case RShift: |
| 3021 | return BINARY_RSHIFT; |
| 3022 | case BitOr: |
| 3023 | return BINARY_OR; |
| 3024 | case BitXor: |
| 3025 | return BINARY_XOR; |
| 3026 | case BitAnd: |
| 3027 | return BINARY_AND; |
| 3028 | case FloorDiv: |
| 3029 | return BINARY_FLOOR_DIVIDE; |
| 3030 | default: |
| 3031 | PyErr_Format(PyExc_SystemError, |
| 3032 | "binary op %d should not be possible", op); |
| 3033 | return 0; |
| 3034 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3035 | } |
| 3036 | |
| 3037 | static int |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3038 | inplace_binop(struct compiler *c, operator_ty op) |
| 3039 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3040 | switch (op) { |
| 3041 | case Add: |
| 3042 | return INPLACE_ADD; |
| 3043 | case Sub: |
| 3044 | return INPLACE_SUBTRACT; |
| 3045 | case Mult: |
| 3046 | return INPLACE_MULTIPLY; |
Benjamin Peterson | d51374e | 2014-04-09 23:55:56 -0400 | [diff] [blame] | 3047 | case MatMult: |
| 3048 | return INPLACE_MATRIX_MULTIPLY; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3049 | case Div: |
| 3050 | return INPLACE_TRUE_DIVIDE; |
| 3051 | case Mod: |
| 3052 | return INPLACE_MODULO; |
| 3053 | case Pow: |
| 3054 | return INPLACE_POWER; |
| 3055 | case LShift: |
| 3056 | return INPLACE_LSHIFT; |
| 3057 | case RShift: |
| 3058 | return INPLACE_RSHIFT; |
| 3059 | case BitOr: |
| 3060 | return INPLACE_OR; |
| 3061 | case BitXor: |
| 3062 | return INPLACE_XOR; |
| 3063 | case BitAnd: |
| 3064 | return INPLACE_AND; |
| 3065 | case FloorDiv: |
| 3066 | return INPLACE_FLOOR_DIVIDE; |
| 3067 | default: |
| 3068 | PyErr_Format(PyExc_SystemError, |
| 3069 | "inplace binary op %d should not be possible", op); |
| 3070 | return 0; |
| 3071 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3072 | } |
| 3073 | |
| 3074 | static int |
| 3075 | compiler_nameop(struct compiler *c, identifier name, expr_context_ty ctx) |
| 3076 | { |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 3077 | int op, scope; |
| 3078 | Py_ssize_t arg; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3079 | enum { OP_FAST, OP_GLOBAL, OP_DEREF, OP_NAME } optype; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3080 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3081 | PyObject *dict = c->u->u_names; |
| 3082 | PyObject *mangled; |
| 3083 | /* XXX AugStore isn't used anywhere! */ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3084 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3085 | mangled = _Py_Mangle(c->u->u_private, name); |
| 3086 | if (!mangled) |
| 3087 | return 0; |
Neil Schemenauer | 8b528b2 | 2005-10-23 18:37:42 +0000 | [diff] [blame] | 3088 | |
Serhiy Storchaka | f4934ea | 2016-11-16 10:17:58 +0200 | [diff] [blame] | 3089 | assert(!_PyUnicode_EqualToASCIIString(name, "None") && |
| 3090 | !_PyUnicode_EqualToASCIIString(name, "True") && |
| 3091 | !_PyUnicode_EqualToASCIIString(name, "False")); |
Benjamin Peterson | 70b224d | 2012-12-06 17:49:58 -0500 | [diff] [blame] | 3092 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3093 | op = 0; |
| 3094 | optype = OP_NAME; |
| 3095 | scope = PyST_GetScope(c->u->u_ste, mangled); |
| 3096 | switch (scope) { |
| 3097 | case FREE: |
| 3098 | dict = c->u->u_freevars; |
| 3099 | optype = OP_DEREF; |
| 3100 | break; |
| 3101 | case CELL: |
| 3102 | dict = c->u->u_cellvars; |
| 3103 | optype = OP_DEREF; |
| 3104 | break; |
| 3105 | case LOCAL: |
| 3106 | if (c->u->u_ste->ste_type == FunctionBlock) |
| 3107 | optype = OP_FAST; |
| 3108 | break; |
| 3109 | case GLOBAL_IMPLICIT: |
Benjamin Peterson | 1dfd247 | 2015-04-27 21:44:22 -0400 | [diff] [blame] | 3110 | if (c->u->u_ste->ste_type == FunctionBlock) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3111 | optype = OP_GLOBAL; |
| 3112 | break; |
| 3113 | case GLOBAL_EXPLICIT: |
| 3114 | optype = OP_GLOBAL; |
| 3115 | break; |
| 3116 | default: |
| 3117 | /* scope can be 0 */ |
| 3118 | break; |
| 3119 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3120 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3121 | /* XXX Leave assert here, but handle __doc__ and the like better */ |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 3122 | assert(scope || PyUnicode_READ_CHAR(name, 0) == '_'); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3123 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3124 | switch (optype) { |
| 3125 | case OP_DEREF: |
| 3126 | switch (ctx) { |
Benjamin Peterson | 3b0431d | 2013-04-30 09:41:40 -0400 | [diff] [blame] | 3127 | case Load: |
| 3128 | op = (c->u->u_ste->ste_type == ClassBlock) ? LOAD_CLASSDEREF : LOAD_DEREF; |
| 3129 | break; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3130 | case Store: op = STORE_DEREF; break; |
| 3131 | case AugLoad: |
| 3132 | case AugStore: |
| 3133 | break; |
Amaury Forgeot d'Arc | ba117ef | 2010-09-10 21:39:53 +0000 | [diff] [blame] | 3134 | case Del: op = DELETE_DEREF; break; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3135 | case Param: |
| 3136 | default: |
| 3137 | PyErr_SetString(PyExc_SystemError, |
| 3138 | "param invalid for deref variable"); |
| 3139 | return 0; |
| 3140 | } |
| 3141 | break; |
| 3142 | case OP_FAST: |
| 3143 | switch (ctx) { |
| 3144 | case Load: op = LOAD_FAST; break; |
| 3145 | case Store: op = STORE_FAST; break; |
| 3146 | case Del: op = DELETE_FAST; break; |
| 3147 | case AugLoad: |
| 3148 | case AugStore: |
| 3149 | break; |
| 3150 | case Param: |
| 3151 | default: |
| 3152 | PyErr_SetString(PyExc_SystemError, |
| 3153 | "param invalid for local variable"); |
| 3154 | return 0; |
| 3155 | } |
| 3156 | ADDOP_O(c, op, mangled, varnames); |
| 3157 | Py_DECREF(mangled); |
| 3158 | return 1; |
| 3159 | case OP_GLOBAL: |
| 3160 | switch (ctx) { |
| 3161 | case Load: op = LOAD_GLOBAL; break; |
| 3162 | case Store: op = STORE_GLOBAL; break; |
| 3163 | case Del: op = DELETE_GLOBAL; break; |
| 3164 | case AugLoad: |
| 3165 | case AugStore: |
| 3166 | break; |
| 3167 | case Param: |
| 3168 | default: |
| 3169 | PyErr_SetString(PyExc_SystemError, |
| 3170 | "param invalid for global variable"); |
| 3171 | return 0; |
| 3172 | } |
| 3173 | break; |
| 3174 | case OP_NAME: |
| 3175 | switch (ctx) { |
Benjamin Peterson | 20f9c3c | 2010-07-20 22:39:34 +0000 | [diff] [blame] | 3176 | case Load: op = LOAD_NAME; break; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3177 | case Store: op = STORE_NAME; break; |
| 3178 | case Del: op = DELETE_NAME; break; |
| 3179 | case AugLoad: |
| 3180 | case AugStore: |
| 3181 | break; |
| 3182 | case Param: |
| 3183 | default: |
| 3184 | PyErr_SetString(PyExc_SystemError, |
| 3185 | "param invalid for name variable"); |
| 3186 | return 0; |
| 3187 | } |
| 3188 | break; |
| 3189 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3190 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3191 | assert(op); |
| 3192 | arg = compiler_add_o(c, dict, mangled); |
| 3193 | Py_DECREF(mangled); |
| 3194 | if (arg < 0) |
| 3195 | return 0; |
| 3196 | return compiler_addop_i(c, op, arg); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3197 | } |
| 3198 | |
| 3199 | static int |
| 3200 | compiler_boolop(struct compiler *c, expr_ty e) |
| 3201 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3202 | basicblock *end; |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 3203 | int jumpi; |
| 3204 | Py_ssize_t i, n; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3205 | asdl_seq *s; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3206 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3207 | assert(e->kind == BoolOp_kind); |
| 3208 | if (e->v.BoolOp.op == And) |
| 3209 | jumpi = JUMP_IF_FALSE_OR_POP; |
| 3210 | else |
| 3211 | jumpi = JUMP_IF_TRUE_OR_POP; |
| 3212 | end = compiler_new_block(c); |
| 3213 | if (end == NULL) |
| 3214 | return 0; |
| 3215 | s = e->v.BoolOp.values; |
| 3216 | n = asdl_seq_LEN(s) - 1; |
| 3217 | assert(n >= 0); |
| 3218 | for (i = 0; i < n; ++i) { |
| 3219 | VISIT(c, expr, (expr_ty)asdl_seq_GET(s, i)); |
| 3220 | ADDOP_JABS(c, jumpi, end); |
| 3221 | } |
| 3222 | VISIT(c, expr, (expr_ty)asdl_seq_GET(s, n)); |
| 3223 | compiler_use_next_block(c, end); |
| 3224 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3225 | } |
| 3226 | |
| 3227 | static int |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3228 | starunpack_helper(struct compiler *c, asdl_seq *elts, |
| 3229 | int single_op, int inner_op, int outer_op) |
| 3230 | { |
| 3231 | Py_ssize_t n = asdl_seq_LEN(elts); |
| 3232 | Py_ssize_t i, nsubitems = 0, nseen = 0; |
| 3233 | for (i = 0; i < n; i++) { |
| 3234 | expr_ty elt = asdl_seq_GET(elts, i); |
| 3235 | if (elt->kind == Starred_kind) { |
| 3236 | if (nseen) { |
| 3237 | ADDOP_I(c, inner_op, nseen); |
| 3238 | nseen = 0; |
| 3239 | nsubitems++; |
| 3240 | } |
| 3241 | VISIT(c, expr, elt->v.Starred.value); |
| 3242 | nsubitems++; |
| 3243 | } |
| 3244 | else { |
| 3245 | VISIT(c, expr, elt); |
| 3246 | nseen++; |
| 3247 | } |
| 3248 | } |
| 3249 | if (nsubitems) { |
| 3250 | if (nseen) { |
| 3251 | ADDOP_I(c, inner_op, nseen); |
| 3252 | nsubitems++; |
| 3253 | } |
| 3254 | ADDOP_I(c, outer_op, nsubitems); |
| 3255 | } |
| 3256 | else |
| 3257 | ADDOP_I(c, single_op, nseen); |
| 3258 | return 1; |
| 3259 | } |
| 3260 | |
| 3261 | static int |
| 3262 | assignment_helper(struct compiler *c, asdl_seq *elts) |
| 3263 | { |
| 3264 | Py_ssize_t n = asdl_seq_LEN(elts); |
| 3265 | Py_ssize_t i; |
| 3266 | int seen_star = 0; |
| 3267 | for (i = 0; i < n; i++) { |
| 3268 | expr_ty elt = asdl_seq_GET(elts, i); |
| 3269 | if (elt->kind == Starred_kind && !seen_star) { |
| 3270 | if ((i >= (1 << 8)) || |
| 3271 | (n-i-1 >= (INT_MAX >> 8))) |
| 3272 | return compiler_error(c, |
| 3273 | "too many expressions in " |
| 3274 | "star-unpacking assignment"); |
| 3275 | ADDOP_I(c, UNPACK_EX, (i + ((n-i-1) << 8))); |
| 3276 | seen_star = 1; |
| 3277 | asdl_seq_SET(elts, i, elt->v.Starred.value); |
| 3278 | } |
| 3279 | else if (elt->kind == Starred_kind) { |
| 3280 | return compiler_error(c, |
| 3281 | "two starred expressions in assignment"); |
| 3282 | } |
| 3283 | } |
| 3284 | if (!seen_star) { |
| 3285 | ADDOP_I(c, UNPACK_SEQUENCE, n); |
| 3286 | } |
| 3287 | VISIT_SEQ(c, expr, elts); |
| 3288 | return 1; |
| 3289 | } |
| 3290 | |
| 3291 | static int |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3292 | compiler_list(struct compiler *c, expr_ty e) |
| 3293 | { |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3294 | asdl_seq *elts = e->v.List.elts; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3295 | if (e->v.List.ctx == Store) { |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3296 | return assignment_helper(c, elts); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3297 | } |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3298 | else if (e->v.List.ctx == Load) { |
| 3299 | return starunpack_helper(c, elts, |
| 3300 | BUILD_LIST, BUILD_TUPLE, BUILD_LIST_UNPACK); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3301 | } |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3302 | else |
| 3303 | VISIT_SEQ(c, expr, elts); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3304 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3305 | } |
| 3306 | |
| 3307 | static int |
| 3308 | compiler_tuple(struct compiler *c, expr_ty e) |
| 3309 | { |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3310 | asdl_seq *elts = e->v.Tuple.elts; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3311 | if (e->v.Tuple.ctx == Store) { |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3312 | return assignment_helper(c, elts); |
| 3313 | } |
| 3314 | else if (e->v.Tuple.ctx == Load) { |
| 3315 | return starunpack_helper(c, elts, |
| 3316 | BUILD_TUPLE, BUILD_TUPLE, BUILD_TUPLE_UNPACK); |
| 3317 | } |
| 3318 | else |
| 3319 | VISIT_SEQ(c, expr, elts); |
| 3320 | return 1; |
| 3321 | } |
| 3322 | |
| 3323 | static int |
| 3324 | compiler_set(struct compiler *c, expr_ty e) |
| 3325 | { |
| 3326 | return starunpack_helper(c, e->v.Set.elts, BUILD_SET, |
| 3327 | BUILD_SET, BUILD_SET_UNPACK); |
| 3328 | } |
| 3329 | |
| 3330 | static int |
Serhiy Storchaka | 6a7506a | 2016-06-12 00:39:41 +0300 | [diff] [blame] | 3331 | are_all_items_const(asdl_seq *seq, Py_ssize_t begin, Py_ssize_t end) |
| 3332 | { |
| 3333 | Py_ssize_t i; |
| 3334 | for (i = begin; i < end; i++) { |
| 3335 | expr_ty key = (expr_ty)asdl_seq_GET(seq, i); |
| 3336 | if (key == NULL || !is_const(key)) |
| 3337 | return 0; |
| 3338 | } |
| 3339 | return 1; |
| 3340 | } |
| 3341 | |
| 3342 | static int |
| 3343 | compiler_subdict(struct compiler *c, expr_ty e, Py_ssize_t begin, Py_ssize_t end) |
| 3344 | { |
| 3345 | Py_ssize_t i, n = end - begin; |
| 3346 | PyObject *keys, *key; |
| 3347 | if (n > 1 && are_all_items_const(e->v.Dict.keys, begin, end)) { |
| 3348 | for (i = begin; i < end; i++) { |
| 3349 | VISIT(c, expr, (expr_ty)asdl_seq_GET(e->v.Dict.values, i)); |
| 3350 | } |
| 3351 | keys = PyTuple_New(n); |
| 3352 | if (keys == NULL) { |
| 3353 | return 0; |
| 3354 | } |
| 3355 | for (i = begin; i < end; i++) { |
| 3356 | key = get_const_value((expr_ty)asdl_seq_GET(e->v.Dict.keys, i)); |
| 3357 | Py_INCREF(key); |
| 3358 | PyTuple_SET_ITEM(keys, i - begin, key); |
| 3359 | } |
| 3360 | ADDOP_N(c, LOAD_CONST, keys, consts); |
| 3361 | ADDOP_I(c, BUILD_CONST_KEY_MAP, n); |
| 3362 | } |
| 3363 | else { |
| 3364 | for (i = begin; i < end; i++) { |
| 3365 | VISIT(c, expr, (expr_ty)asdl_seq_GET(e->v.Dict.keys, i)); |
| 3366 | VISIT(c, expr, (expr_ty)asdl_seq_GET(e->v.Dict.values, i)); |
| 3367 | } |
| 3368 | ADDOP_I(c, BUILD_MAP, n); |
| 3369 | } |
| 3370 | return 1; |
| 3371 | } |
| 3372 | |
| 3373 | static int |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3374 | compiler_dict(struct compiler *c, expr_ty e) |
| 3375 | { |
Victor Stinner | 976bb40 | 2016-03-23 11:36:19 +0100 | [diff] [blame] | 3376 | Py_ssize_t i, n, elements; |
| 3377 | int containers; |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3378 | int is_unpacking = 0; |
| 3379 | n = asdl_seq_LEN(e->v.Dict.values); |
| 3380 | containers = 0; |
| 3381 | elements = 0; |
| 3382 | for (i = 0; i < n; i++) { |
| 3383 | is_unpacking = (expr_ty)asdl_seq_GET(e->v.Dict.keys, i) == NULL; |
| 3384 | if (elements == 0xFFFF || (elements && is_unpacking)) { |
Serhiy Storchaka | 6a7506a | 2016-06-12 00:39:41 +0300 | [diff] [blame] | 3385 | if (!compiler_subdict(c, e, i - elements, i)) |
| 3386 | return 0; |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3387 | containers++; |
| 3388 | elements = 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3389 | } |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3390 | if (is_unpacking) { |
| 3391 | VISIT(c, expr, (expr_ty)asdl_seq_GET(e->v.Dict.values, i)); |
| 3392 | containers++; |
| 3393 | } |
| 3394 | else { |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3395 | elements++; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3396 | } |
| 3397 | } |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3398 | if (elements || containers == 0) { |
Serhiy Storchaka | 6a7506a | 2016-06-12 00:39:41 +0300 | [diff] [blame] | 3399 | if (!compiler_subdict(c, e, n - elements, n)) |
| 3400 | return 0; |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3401 | containers++; |
| 3402 | } |
| 3403 | /* If there is more than one dict, they need to be merged into a new |
| 3404 | * dict. If there is one dict and it's an unpacking, then it needs |
| 3405 | * to be copied into a new dict." */ |
Serhiy Storchaka | 3d85fae | 2016-11-28 20:56:37 +0200 | [diff] [blame] | 3406 | if (containers > 1 || is_unpacking) { |
| 3407 | ADDOP_I(c, BUILD_MAP_UNPACK, containers); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3408 | } |
| 3409 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3410 | } |
| 3411 | |
| 3412 | static int |
| 3413 | compiler_compare(struct compiler *c, expr_ty e) |
| 3414 | { |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 3415 | Py_ssize_t i, n; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3416 | basicblock *cleanup = NULL; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3417 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3418 | /* XXX the logic can be cleaned up for 1 or multiple comparisons */ |
| 3419 | VISIT(c, expr, e->v.Compare.left); |
| 3420 | n = asdl_seq_LEN(e->v.Compare.ops); |
| 3421 | assert(n > 0); |
| 3422 | if (n > 1) { |
| 3423 | cleanup = compiler_new_block(c); |
| 3424 | if (cleanup == NULL) |
| 3425 | return 0; |
| 3426 | VISIT(c, expr, |
| 3427 | (expr_ty)asdl_seq_GET(e->v.Compare.comparators, 0)); |
| 3428 | } |
| 3429 | for (i = 1; i < n; i++) { |
| 3430 | ADDOP(c, DUP_TOP); |
| 3431 | ADDOP(c, ROT_THREE); |
| 3432 | ADDOP_I(c, COMPARE_OP, |
| 3433 | cmpop((cmpop_ty)(asdl_seq_GET( |
| 3434 | e->v.Compare.ops, i - 1)))); |
| 3435 | ADDOP_JABS(c, JUMP_IF_FALSE_OR_POP, cleanup); |
| 3436 | NEXT_BLOCK(c); |
| 3437 | if (i < (n - 1)) |
| 3438 | VISIT(c, expr, |
| 3439 | (expr_ty)asdl_seq_GET(e->v.Compare.comparators, i)); |
| 3440 | } |
| 3441 | VISIT(c, expr, (expr_ty)asdl_seq_GET(e->v.Compare.comparators, n - 1)); |
| 3442 | ADDOP_I(c, COMPARE_OP, |
| 3443 | cmpop((cmpop_ty)(asdl_seq_GET(e->v.Compare.ops, n - 1)))); |
| 3444 | if (n > 1) { |
| 3445 | basicblock *end = compiler_new_block(c); |
| 3446 | if (end == NULL) |
| 3447 | return 0; |
| 3448 | ADDOP_JREL(c, JUMP_FORWARD, end); |
| 3449 | compiler_use_next_block(c, cleanup); |
| 3450 | ADDOP(c, ROT_TWO); |
| 3451 | ADDOP(c, POP_TOP); |
| 3452 | compiler_use_next_block(c, end); |
| 3453 | } |
| 3454 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3455 | } |
| 3456 | |
| 3457 | static int |
Yury Selivanov | f239213 | 2016-12-13 19:03:51 -0500 | [diff] [blame] | 3458 | maybe_optimize_method_call(struct compiler *c, expr_ty e) |
| 3459 | { |
| 3460 | Py_ssize_t argsl, i; |
| 3461 | expr_ty meth = e->v.Call.func; |
| 3462 | asdl_seq *args = e->v.Call.args; |
| 3463 | |
| 3464 | /* Check that the call node is an attribute access, and that |
| 3465 | the call doesn't have keyword parameters. */ |
| 3466 | if (meth->kind != Attribute_kind || meth->v.Attribute.ctx != Load || |
| 3467 | asdl_seq_LEN(e->v.Call.keywords)) |
| 3468 | return -1; |
| 3469 | |
| 3470 | /* Check that there are no *varargs types of arguments. */ |
| 3471 | argsl = asdl_seq_LEN(args); |
| 3472 | for (i = 0; i < argsl; i++) { |
| 3473 | expr_ty elt = asdl_seq_GET(args, i); |
| 3474 | if (elt->kind == Starred_kind) { |
| 3475 | return -1; |
| 3476 | } |
| 3477 | } |
| 3478 | |
| 3479 | /* Alright, we can optimize the code. */ |
| 3480 | VISIT(c, expr, meth->v.Attribute.value); |
| 3481 | ADDOP_NAME(c, LOAD_METHOD, meth->v.Attribute.attr, names); |
| 3482 | VISIT_SEQ(c, expr, e->v.Call.args); |
| 3483 | ADDOP_I(c, CALL_METHOD, asdl_seq_LEN(e->v.Call.args)); |
| 3484 | return 1; |
| 3485 | } |
| 3486 | |
| 3487 | static int |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3488 | compiler_call(struct compiler *c, expr_ty e) |
| 3489 | { |
Yury Selivanov | f239213 | 2016-12-13 19:03:51 -0500 | [diff] [blame] | 3490 | if (maybe_optimize_method_call(c, e) > 0) |
| 3491 | return 1; |
| 3492 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3493 | VISIT(c, expr, e->v.Call.func); |
| 3494 | return compiler_call_helper(c, 0, |
| 3495 | e->v.Call.args, |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3496 | e->v.Call.keywords); |
Guido van Rossum | 52cc1d8 | 2007-03-18 15:41:51 +0000 | [diff] [blame] | 3497 | } |
| 3498 | |
Eric V. Smith | 235a6f0 | 2015-09-19 14:51:32 -0400 | [diff] [blame] | 3499 | static int |
| 3500 | compiler_joined_str(struct compiler *c, expr_ty e) |
| 3501 | { |
Eric V. Smith | 235a6f0 | 2015-09-19 14:51:32 -0400 | [diff] [blame] | 3502 | VISIT_SEQ(c, expr, e->v.JoinedStr.values); |
Serhiy Storchaka | 4cc30ae | 2016-12-11 19:37:19 +0200 | [diff] [blame] | 3503 | if (asdl_seq_LEN(e->v.JoinedStr.values) != 1) |
| 3504 | ADDOP_I(c, BUILD_STRING, asdl_seq_LEN(e->v.JoinedStr.values)); |
Eric V. Smith | 235a6f0 | 2015-09-19 14:51:32 -0400 | [diff] [blame] | 3505 | return 1; |
| 3506 | } |
| 3507 | |
Eric V. Smith | a78c795 | 2015-11-03 12:45:05 -0500 | [diff] [blame] | 3508 | /* Used to implement f-strings. Format a single value. */ |
Eric V. Smith | 235a6f0 | 2015-09-19 14:51:32 -0400 | [diff] [blame] | 3509 | static int |
| 3510 | compiler_formatted_value(struct compiler *c, expr_ty e) |
| 3511 | { |
Eric V. Smith | a78c795 | 2015-11-03 12:45:05 -0500 | [diff] [blame] | 3512 | /* Our oparg encodes 2 pieces of information: the conversion |
| 3513 | character, and whether or not a format_spec was provided. |
Eric V. Smith | 235a6f0 | 2015-09-19 14:51:32 -0400 | [diff] [blame] | 3514 | |
Eric V. Smith | a78c795 | 2015-11-03 12:45:05 -0500 | [diff] [blame] | 3515 | Convert the conversion char to 2 bits: |
| 3516 | None: 000 0x0 FVC_NONE |
| 3517 | !s : 001 0x1 FVC_STR |
| 3518 | !r : 010 0x2 FVC_REPR |
| 3519 | !a : 011 0x3 FVC_ASCII |
Eric V. Smith | 235a6f0 | 2015-09-19 14:51:32 -0400 | [diff] [blame] | 3520 | |
Eric V. Smith | a78c795 | 2015-11-03 12:45:05 -0500 | [diff] [blame] | 3521 | next bit is whether or not we have a format spec: |
| 3522 | yes : 100 0x4 |
| 3523 | no : 000 0x0 |
| 3524 | */ |
Eric V. Smith | 235a6f0 | 2015-09-19 14:51:32 -0400 | [diff] [blame] | 3525 | |
Eric V. Smith | a78c795 | 2015-11-03 12:45:05 -0500 | [diff] [blame] | 3526 | int oparg; |
Eric V. Smith | 235a6f0 | 2015-09-19 14:51:32 -0400 | [diff] [blame] | 3527 | |
Eric V. Smith | a78c795 | 2015-11-03 12:45:05 -0500 | [diff] [blame] | 3528 | /* Evaluate the expression to be formatted. */ |
Eric V. Smith | 235a6f0 | 2015-09-19 14:51:32 -0400 | [diff] [blame] | 3529 | VISIT(c, expr, e->v.FormattedValue.value); |
| 3530 | |
Eric V. Smith | a78c795 | 2015-11-03 12:45:05 -0500 | [diff] [blame] | 3531 | switch (e->v.FormattedValue.conversion) { |
| 3532 | case 's': oparg = FVC_STR; break; |
| 3533 | case 'r': oparg = FVC_REPR; break; |
| 3534 | case 'a': oparg = FVC_ASCII; break; |
| 3535 | case -1: oparg = FVC_NONE; break; |
| 3536 | default: |
| 3537 | PyErr_SetString(PyExc_SystemError, |
| 3538 | "Unrecognized conversion character"); |
| 3539 | return 0; |
Eric V. Smith | 235a6f0 | 2015-09-19 14:51:32 -0400 | [diff] [blame] | 3540 | } |
Eric V. Smith | 235a6f0 | 2015-09-19 14:51:32 -0400 | [diff] [blame] | 3541 | if (e->v.FormattedValue.format_spec) { |
Eric V. Smith | a78c795 | 2015-11-03 12:45:05 -0500 | [diff] [blame] | 3542 | /* Evaluate the format spec, and update our opcode arg. */ |
Eric V. Smith | 235a6f0 | 2015-09-19 14:51:32 -0400 | [diff] [blame] | 3543 | VISIT(c, expr, e->v.FormattedValue.format_spec); |
Eric V. Smith | a78c795 | 2015-11-03 12:45:05 -0500 | [diff] [blame] | 3544 | oparg |= FVS_HAVE_SPEC; |
Eric V. Smith | 235a6f0 | 2015-09-19 14:51:32 -0400 | [diff] [blame] | 3545 | } |
| 3546 | |
Eric V. Smith | a78c795 | 2015-11-03 12:45:05 -0500 | [diff] [blame] | 3547 | /* And push our opcode and oparg */ |
| 3548 | ADDOP_I(c, FORMAT_VALUE, oparg); |
Eric V. Smith | 235a6f0 | 2015-09-19 14:51:32 -0400 | [diff] [blame] | 3549 | return 1; |
| 3550 | } |
| 3551 | |
Serhiy Storchaka | 6a7506a | 2016-06-12 00:39:41 +0300 | [diff] [blame] | 3552 | static int |
| 3553 | compiler_subkwargs(struct compiler *c, asdl_seq *keywords, Py_ssize_t begin, Py_ssize_t end) |
| 3554 | { |
| 3555 | Py_ssize_t i, n = end - begin; |
| 3556 | keyword_ty kw; |
| 3557 | PyObject *keys, *key; |
| 3558 | assert(n > 0); |
| 3559 | if (n > 1) { |
| 3560 | for (i = begin; i < end; i++) { |
| 3561 | kw = asdl_seq_GET(keywords, i); |
| 3562 | VISIT(c, expr, kw->value); |
| 3563 | } |
| 3564 | keys = PyTuple_New(n); |
| 3565 | if (keys == NULL) { |
| 3566 | return 0; |
| 3567 | } |
| 3568 | for (i = begin; i < end; i++) { |
| 3569 | key = ((keyword_ty) asdl_seq_GET(keywords, i))->arg; |
| 3570 | Py_INCREF(key); |
| 3571 | PyTuple_SET_ITEM(keys, i - begin, key); |
| 3572 | } |
| 3573 | ADDOP_N(c, LOAD_CONST, keys, consts); |
| 3574 | ADDOP_I(c, BUILD_CONST_KEY_MAP, n); |
| 3575 | } |
| 3576 | else { |
| 3577 | /* a for loop only executes once */ |
| 3578 | for (i = begin; i < end; i++) { |
| 3579 | kw = asdl_seq_GET(keywords, i); |
| 3580 | ADDOP_O(c, LOAD_CONST, kw->arg, consts); |
| 3581 | VISIT(c, expr, kw->value); |
| 3582 | } |
| 3583 | ADDOP_I(c, BUILD_MAP, n); |
| 3584 | } |
| 3585 | return 1; |
| 3586 | } |
| 3587 | |
Guido van Rossum | 52cc1d8 | 2007-03-18 15:41:51 +0000 | [diff] [blame] | 3588 | /* shared code between compiler_call and compiler_class */ |
| 3589 | static int |
| 3590 | compiler_call_helper(struct compiler *c, |
Victor Stinner | 976bb40 | 2016-03-23 11:36:19 +0100 | [diff] [blame] | 3591 | int n, /* Args already pushed */ |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 3592 | asdl_seq *args, |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3593 | asdl_seq *keywords) |
Guido van Rossum | 52cc1d8 | 2007-03-18 15:41:51 +0000 | [diff] [blame] | 3594 | { |
Victor Stinner | f9b760f | 2016-09-09 10:17:08 -0700 | [diff] [blame] | 3595 | Py_ssize_t i, nseen, nelts, nkwelts; |
Serhiy Storchaka | b728105 | 2016-09-12 00:52:40 +0300 | [diff] [blame] | 3596 | int mustdictunpack = 0; |
Guido van Rossum | 52cc1d8 | 2007-03-18 15:41:51 +0000 | [diff] [blame] | 3597 | |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3598 | /* the number of tuples and dictionaries on the stack */ |
| 3599 | Py_ssize_t nsubargs = 0, nsubkwargs = 0; |
| 3600 | |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3601 | nelts = asdl_seq_LEN(args); |
Victor Stinner | f9b760f | 2016-09-09 10:17:08 -0700 | [diff] [blame] | 3602 | nkwelts = asdl_seq_LEN(keywords); |
| 3603 | |
| 3604 | for (i = 0; i < nkwelts; i++) { |
| 3605 | keyword_ty kw = asdl_seq_GET(keywords, i); |
| 3606 | if (kw->arg == NULL) { |
| 3607 | mustdictunpack = 1; |
| 3608 | break; |
| 3609 | } |
| 3610 | } |
| 3611 | |
| 3612 | nseen = n; /* the number of positional arguments on the stack */ |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3613 | for (i = 0; i < nelts; i++) { |
| 3614 | expr_ty elt = asdl_seq_GET(args, i); |
| 3615 | if (elt->kind == Starred_kind) { |
| 3616 | /* A star-arg. If we've seen positional arguments, |
Victor Stinner | f9b760f | 2016-09-09 10:17:08 -0700 | [diff] [blame] | 3617 | pack the positional arguments into a tuple. */ |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3618 | if (nseen) { |
| 3619 | ADDOP_I(c, BUILD_TUPLE, nseen); |
| 3620 | nseen = 0; |
| 3621 | nsubargs++; |
| 3622 | } |
| 3623 | VISIT(c, expr, elt->v.Starred.value); |
| 3624 | nsubargs++; |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3625 | } |
| 3626 | else { |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3627 | VISIT(c, expr, elt); |
Victor Stinner | f9b760f | 2016-09-09 10:17:08 -0700 | [diff] [blame] | 3628 | nseen++; |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3629 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3630 | } |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3631 | |
| 3632 | /* Same dance again for keyword arguments */ |
Serhiy Storchaka | b728105 | 2016-09-12 00:52:40 +0300 | [diff] [blame] | 3633 | if (nsubargs || mustdictunpack) { |
Victor Stinner | f9b760f | 2016-09-09 10:17:08 -0700 | [diff] [blame] | 3634 | if (nseen) { |
| 3635 | /* Pack up any trailing positional arguments. */ |
| 3636 | ADDOP_I(c, BUILD_TUPLE, nseen); |
| 3637 | nsubargs++; |
| 3638 | } |
Serhiy Storchaka | b728105 | 2016-09-12 00:52:40 +0300 | [diff] [blame] | 3639 | if (nsubargs > 1) { |
Victor Stinner | f9b760f | 2016-09-09 10:17:08 -0700 | [diff] [blame] | 3640 | /* If we ended up with more than one stararg, we need |
| 3641 | to concatenate them into a single sequence. */ |
Serhiy Storchaka | 7344285 | 2016-10-02 10:33:46 +0300 | [diff] [blame] | 3642 | ADDOP_I(c, BUILD_TUPLE_UNPACK_WITH_CALL, nsubargs); |
Victor Stinner | f9b760f | 2016-09-09 10:17:08 -0700 | [diff] [blame] | 3643 | } |
| 3644 | else if (nsubargs == 0) { |
| 3645 | ADDOP_I(c, BUILD_TUPLE, 0); |
| 3646 | } |
| 3647 | nseen = 0; /* the number of keyword arguments on the stack following */ |
| 3648 | for (i = 0; i < nkwelts; i++) { |
| 3649 | keyword_ty kw = asdl_seq_GET(keywords, i); |
| 3650 | if (kw->arg == NULL) { |
| 3651 | /* A keyword argument unpacking. */ |
| 3652 | if (nseen) { |
Serhiy Storchaka | 6a7506a | 2016-06-12 00:39:41 +0300 | [diff] [blame] | 3653 | if (!compiler_subkwargs(c, keywords, i - nseen, i)) |
| 3654 | return 0; |
| 3655 | nsubkwargs++; |
Victor Stinner | f9b760f | 2016-09-09 10:17:08 -0700 | [diff] [blame] | 3656 | nseen = 0; |
Serhiy Storchaka | 6a7506a | 2016-06-12 00:39:41 +0300 | [diff] [blame] | 3657 | } |
Victor Stinner | f9b760f | 2016-09-09 10:17:08 -0700 | [diff] [blame] | 3658 | VISIT(c, expr, kw->value); |
| 3659 | nsubkwargs++; |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3660 | } |
Victor Stinner | f9b760f | 2016-09-09 10:17:08 -0700 | [diff] [blame] | 3661 | else { |
| 3662 | nseen++; |
| 3663 | } |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3664 | } |
Victor Stinner | f9b760f | 2016-09-09 10:17:08 -0700 | [diff] [blame] | 3665 | if (nseen) { |
Serhiy Storchaka | 6a7506a | 2016-06-12 00:39:41 +0300 | [diff] [blame] | 3666 | /* Pack up any trailing keyword arguments. */ |
Victor Stinner | f9b760f | 2016-09-09 10:17:08 -0700 | [diff] [blame] | 3667 | if (!compiler_subkwargs(c, keywords, nkwelts - nseen, nkwelts)) |
Serhiy Storchaka | 6a7506a | 2016-06-12 00:39:41 +0300 | [diff] [blame] | 3668 | return 0; |
| 3669 | nsubkwargs++; |
| 3670 | } |
Serhiy Storchaka | b728105 | 2016-09-12 00:52:40 +0300 | [diff] [blame] | 3671 | if (nsubkwargs > 1) { |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3672 | /* Pack it all up */ |
Victor Stinner | f9b760f | 2016-09-09 10:17:08 -0700 | [diff] [blame] | 3673 | ADDOP_I(c, BUILD_MAP_UNPACK_WITH_CALL, nsubkwargs); |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3674 | } |
Victor Stinner | f9b760f | 2016-09-09 10:17:08 -0700 | [diff] [blame] | 3675 | ADDOP_I(c, CALL_FUNCTION_EX, nsubkwargs > 0); |
| 3676 | return 1; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3677 | } |
Victor Stinner | f9b760f | 2016-09-09 10:17:08 -0700 | [diff] [blame] | 3678 | else if (nkwelts) { |
| 3679 | PyObject *names; |
| 3680 | VISIT_SEQ(c, keyword, keywords); |
| 3681 | names = PyTuple_New(nkwelts); |
| 3682 | if (names == NULL) { |
| 3683 | return 0; |
| 3684 | } |
| 3685 | for (i = 0; i < nkwelts; i++) { |
| 3686 | keyword_ty kw = asdl_seq_GET(keywords, i); |
| 3687 | Py_INCREF(kw->arg); |
| 3688 | PyTuple_SET_ITEM(names, i, kw->arg); |
| 3689 | } |
| 3690 | ADDOP_N(c, LOAD_CONST, names, consts); |
| 3691 | ADDOP_I(c, CALL_FUNCTION_KW, n + nelts + nkwelts); |
| 3692 | return 1; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3693 | } |
Victor Stinner | f9b760f | 2016-09-09 10:17:08 -0700 | [diff] [blame] | 3694 | else { |
| 3695 | ADDOP_I(c, CALL_FUNCTION, n + nelts); |
| 3696 | return 1; |
| 3697 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3698 | } |
| 3699 | |
Nick Coghlan | 650f0d0 | 2007-04-15 12:05:43 +0000 | [diff] [blame] | 3700 | |
| 3701 | /* List and set comprehensions and generator expressions work by creating a |
| 3702 | nested function to perform the actual iteration. This means that the |
| 3703 | iteration variables don't leak into the current scope. |
| 3704 | The defined function is called immediately following its definition, with the |
| 3705 | result of that call being the result of the expression. |
| 3706 | The LC/SC version returns the populated container, while the GE version is |
| 3707 | flagged in symtable.c as a generator, so it returns the generator object |
| 3708 | when the function is called. |
| 3709 | This code *knows* that the loop cannot contain break, continue, or return, |
| 3710 | so it cheats and skips the SETUP_LOOP/POP_BLOCK steps used in normal loops. |
| 3711 | |
| 3712 | Possible cleanups: |
| 3713 | - iterate over the generator sequence instead of using recursion |
| 3714 | */ |
| 3715 | |
Yury Selivanov | 52c4e7c | 2016-09-09 10:36:01 -0700 | [diff] [blame] | 3716 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3717 | static int |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3718 | compiler_comprehension_generator(struct compiler *c, |
| 3719 | asdl_seq *generators, int gen_index, |
| 3720 | expr_ty elt, expr_ty val, int type) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3721 | { |
Yury Selivanov | 52c4e7c | 2016-09-09 10:36:01 -0700 | [diff] [blame] | 3722 | comprehension_ty gen; |
| 3723 | gen = (comprehension_ty)asdl_seq_GET(generators, gen_index); |
| 3724 | if (gen->is_async) { |
| 3725 | return compiler_async_comprehension_generator( |
| 3726 | c, generators, gen_index, elt, val, type); |
| 3727 | } else { |
| 3728 | return compiler_sync_comprehension_generator( |
| 3729 | c, generators, gen_index, elt, val, type); |
| 3730 | } |
| 3731 | } |
| 3732 | |
| 3733 | static int |
| 3734 | compiler_sync_comprehension_generator(struct compiler *c, |
| 3735 | asdl_seq *generators, int gen_index, |
| 3736 | expr_ty elt, expr_ty val, int type) |
| 3737 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3738 | /* generate code for the iterator, then each of the ifs, |
| 3739 | and then write to the element */ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3740 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3741 | comprehension_ty gen; |
| 3742 | basicblock *start, *anchor, *skip, *if_cleanup; |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 3743 | Py_ssize_t i, n; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3744 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3745 | start = compiler_new_block(c); |
| 3746 | skip = compiler_new_block(c); |
| 3747 | if_cleanup = compiler_new_block(c); |
| 3748 | anchor = compiler_new_block(c); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3749 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3750 | if (start == NULL || skip == NULL || if_cleanup == NULL || |
| 3751 | anchor == NULL) |
| 3752 | return 0; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3753 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3754 | gen = (comprehension_ty)asdl_seq_GET(generators, gen_index); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3755 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3756 | if (gen_index == 0) { |
| 3757 | /* Receive outermost iter as an implicit argument */ |
| 3758 | c->u->u_argcount = 1; |
| 3759 | ADDOP_I(c, LOAD_FAST, 0); |
| 3760 | } |
| 3761 | else { |
| 3762 | /* Sub-iter - calculate on the fly */ |
| 3763 | VISIT(c, expr, gen->iter); |
| 3764 | ADDOP(c, GET_ITER); |
| 3765 | } |
| 3766 | compiler_use_next_block(c, start); |
| 3767 | ADDOP_JREL(c, FOR_ITER, anchor); |
| 3768 | NEXT_BLOCK(c); |
| 3769 | VISIT(c, expr, gen->target); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3770 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3771 | /* XXX this needs to be cleaned up...a lot! */ |
| 3772 | n = asdl_seq_LEN(gen->ifs); |
| 3773 | for (i = 0; i < n; i++) { |
| 3774 | expr_ty e = (expr_ty)asdl_seq_GET(gen->ifs, i); |
Serhiy Storchaka | 36ff451 | 2017-06-11 14:50:22 +0300 | [diff] [blame] | 3775 | if (!compiler_jump_if(c, e, if_cleanup, 0)) |
| 3776 | return 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3777 | NEXT_BLOCK(c); |
| 3778 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3779 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3780 | if (++gen_index < asdl_seq_LEN(generators)) |
| 3781 | if (!compiler_comprehension_generator(c, |
| 3782 | generators, gen_index, |
| 3783 | elt, val, type)) |
| 3784 | return 0; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3785 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3786 | /* only append after the last for generator */ |
| 3787 | if (gen_index >= asdl_seq_LEN(generators)) { |
| 3788 | /* comprehension specific code */ |
| 3789 | switch (type) { |
| 3790 | case COMP_GENEXP: |
| 3791 | VISIT(c, expr, elt); |
| 3792 | ADDOP(c, YIELD_VALUE); |
| 3793 | ADDOP(c, POP_TOP); |
| 3794 | break; |
| 3795 | case COMP_LISTCOMP: |
| 3796 | VISIT(c, expr, elt); |
| 3797 | ADDOP_I(c, LIST_APPEND, gen_index + 1); |
| 3798 | break; |
| 3799 | case COMP_SETCOMP: |
| 3800 | VISIT(c, expr, elt); |
| 3801 | ADDOP_I(c, SET_ADD, gen_index + 1); |
| 3802 | break; |
| 3803 | case COMP_DICTCOMP: |
| 3804 | /* With 'd[k] = v', v is evaluated before k, so we do |
| 3805 | the same. */ |
| 3806 | VISIT(c, expr, val); |
| 3807 | VISIT(c, expr, elt); |
| 3808 | ADDOP_I(c, MAP_ADD, gen_index + 1); |
| 3809 | break; |
| 3810 | default: |
| 3811 | return 0; |
| 3812 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3813 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3814 | compiler_use_next_block(c, skip); |
| 3815 | } |
| 3816 | compiler_use_next_block(c, if_cleanup); |
| 3817 | ADDOP_JABS(c, JUMP_ABSOLUTE, start); |
| 3818 | compiler_use_next_block(c, anchor); |
| 3819 | |
| 3820 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 3821 | } |
| 3822 | |
| 3823 | static int |
Yury Selivanov | 52c4e7c | 2016-09-09 10:36:01 -0700 | [diff] [blame] | 3824 | compiler_async_comprehension_generator(struct compiler *c, |
| 3825 | asdl_seq *generators, int gen_index, |
| 3826 | expr_ty elt, expr_ty val, int type) |
| 3827 | { |
| 3828 | _Py_IDENTIFIER(StopAsyncIteration); |
| 3829 | |
| 3830 | comprehension_ty gen; |
| 3831 | basicblock *anchor, *skip, *if_cleanup, *try, |
| 3832 | *after_try, *except, *try_cleanup; |
| 3833 | Py_ssize_t i, n; |
| 3834 | |
| 3835 | PyObject *stop_aiter_error = _PyUnicode_FromId(&PyId_StopAsyncIteration); |
| 3836 | if (stop_aiter_error == NULL) { |
| 3837 | return 0; |
| 3838 | } |
| 3839 | |
| 3840 | try = compiler_new_block(c); |
| 3841 | after_try = compiler_new_block(c); |
| 3842 | try_cleanup = compiler_new_block(c); |
| 3843 | except = compiler_new_block(c); |
| 3844 | skip = compiler_new_block(c); |
| 3845 | if_cleanup = compiler_new_block(c); |
| 3846 | anchor = compiler_new_block(c); |
| 3847 | |
| 3848 | if (skip == NULL || if_cleanup == NULL || anchor == NULL || |
| 3849 | try == NULL || after_try == NULL || |
| 3850 | except == NULL || after_try == NULL) { |
| 3851 | return 0; |
| 3852 | } |
| 3853 | |
| 3854 | gen = (comprehension_ty)asdl_seq_GET(generators, gen_index); |
| 3855 | |
| 3856 | if (gen_index == 0) { |
| 3857 | /* Receive outermost iter as an implicit argument */ |
| 3858 | c->u->u_argcount = 1; |
| 3859 | ADDOP_I(c, LOAD_FAST, 0); |
| 3860 | } |
| 3861 | else { |
| 3862 | /* Sub-iter - calculate on the fly */ |
| 3863 | VISIT(c, expr, gen->iter); |
| 3864 | ADDOP(c, GET_AITER); |
| 3865 | ADDOP_O(c, LOAD_CONST, Py_None, consts); |
| 3866 | ADDOP(c, YIELD_FROM); |
| 3867 | } |
| 3868 | |
| 3869 | compiler_use_next_block(c, try); |
| 3870 | |
| 3871 | |
| 3872 | ADDOP_JREL(c, SETUP_EXCEPT, except); |
| 3873 | if (!compiler_push_fblock(c, EXCEPT, try)) |
| 3874 | return 0; |
| 3875 | |
| 3876 | ADDOP(c, GET_ANEXT); |
| 3877 | ADDOP_O(c, LOAD_CONST, Py_None, consts); |
| 3878 | ADDOP(c, YIELD_FROM); |
| 3879 | VISIT(c, expr, gen->target); |
| 3880 | ADDOP(c, POP_BLOCK); |
| 3881 | compiler_pop_fblock(c, EXCEPT, try); |
| 3882 | ADDOP_JREL(c, JUMP_FORWARD, after_try); |
| 3883 | |
| 3884 | |
| 3885 | compiler_use_next_block(c, except); |
| 3886 | ADDOP(c, DUP_TOP); |
| 3887 | ADDOP_O(c, LOAD_GLOBAL, stop_aiter_error, names); |
| 3888 | ADDOP_I(c, COMPARE_OP, PyCmp_EXC_MATCH); |
| 3889 | ADDOP_JABS(c, POP_JUMP_IF_FALSE, try_cleanup); |
| 3890 | |
| 3891 | ADDOP(c, POP_TOP); |
| 3892 | ADDOP(c, POP_TOP); |
| 3893 | ADDOP(c, POP_TOP); |
| 3894 | ADDOP(c, POP_EXCEPT); /* for SETUP_EXCEPT */ |
| 3895 | ADDOP_JABS(c, JUMP_ABSOLUTE, anchor); |
| 3896 | |
| 3897 | |
| 3898 | compiler_use_next_block(c, try_cleanup); |
| 3899 | ADDOP(c, END_FINALLY); |
| 3900 | |
| 3901 | compiler_use_next_block(c, after_try); |
| 3902 | |
| 3903 | n = asdl_seq_LEN(gen->ifs); |
| 3904 | for (i = 0; i < n; i++) { |
| 3905 | expr_ty e = (expr_ty)asdl_seq_GET(gen->ifs, i); |
Serhiy Storchaka | 36ff451 | 2017-06-11 14:50:22 +0300 | [diff] [blame] | 3906 | if (!compiler_jump_if(c, e, if_cleanup, 0)) |
| 3907 | return 0; |
Yury Selivanov | 52c4e7c | 2016-09-09 10:36:01 -0700 | [diff] [blame] | 3908 | NEXT_BLOCK(c); |
| 3909 | } |
| 3910 | |
| 3911 | if (++gen_index < asdl_seq_LEN(generators)) |
| 3912 | if (!compiler_comprehension_generator(c, |
| 3913 | generators, gen_index, |
| 3914 | elt, val, type)) |
| 3915 | return 0; |
| 3916 | |
| 3917 | /* only append after the last for generator */ |
| 3918 | if (gen_index >= asdl_seq_LEN(generators)) { |
| 3919 | /* comprehension specific code */ |
| 3920 | switch (type) { |
| 3921 | case COMP_GENEXP: |
| 3922 | VISIT(c, expr, elt); |
| 3923 | ADDOP(c, YIELD_VALUE); |
| 3924 | ADDOP(c, POP_TOP); |
| 3925 | break; |
| 3926 | case COMP_LISTCOMP: |
| 3927 | VISIT(c, expr, elt); |
| 3928 | ADDOP_I(c, LIST_APPEND, gen_index + 1); |
| 3929 | break; |
| 3930 | case COMP_SETCOMP: |
| 3931 | VISIT(c, expr, elt); |
| 3932 | ADDOP_I(c, SET_ADD, gen_index + 1); |
| 3933 | break; |
| 3934 | case COMP_DICTCOMP: |
| 3935 | /* With 'd[k] = v', v is evaluated before k, so we do |
| 3936 | the same. */ |
| 3937 | VISIT(c, expr, val); |
| 3938 | VISIT(c, expr, elt); |
| 3939 | ADDOP_I(c, MAP_ADD, gen_index + 1); |
| 3940 | break; |
| 3941 | default: |
| 3942 | return 0; |
| 3943 | } |
| 3944 | |
| 3945 | compiler_use_next_block(c, skip); |
| 3946 | } |
| 3947 | compiler_use_next_block(c, if_cleanup); |
| 3948 | ADDOP_JABS(c, JUMP_ABSOLUTE, try); |
| 3949 | compiler_use_next_block(c, anchor); |
| 3950 | ADDOP(c, POP_TOP); |
| 3951 | |
| 3952 | return 1; |
| 3953 | } |
| 3954 | |
| 3955 | static int |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 3956 | compiler_comprehension(struct compiler *c, expr_ty e, int type, |
| 3957 | identifier name, asdl_seq *generators, expr_ty elt, |
| 3958 | expr_ty val) |
Nick Coghlan | 650f0d0 | 2007-04-15 12:05:43 +0000 | [diff] [blame] | 3959 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3960 | PyCodeObject *co = NULL; |
Yury Selivanov | 52c4e7c | 2016-09-09 10:36:01 -0700 | [diff] [blame] | 3961 | comprehension_ty outermost; |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 3962 | PyObject *qualname = NULL; |
Yury Selivanov | 52c4e7c | 2016-09-09 10:36:01 -0700 | [diff] [blame] | 3963 | int is_async_function = c->u->u_ste->ste_coroutine; |
| 3964 | int is_async_generator = 0; |
Nick Coghlan | 650f0d0 | 2007-04-15 12:05:43 +0000 | [diff] [blame] | 3965 | |
Yury Selivanov | 52c4e7c | 2016-09-09 10:36:01 -0700 | [diff] [blame] | 3966 | outermost = (comprehension_ty) asdl_seq_GET(generators, 0); |
Nick Coghlan | 650f0d0 | 2007-04-15 12:05:43 +0000 | [diff] [blame] | 3967 | |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 3968 | if (!compiler_enter_scope(c, name, COMPILER_SCOPE_COMPREHENSION, |
| 3969 | (void *)e, e->lineno)) |
Yury Selivanov | 52c4e7c | 2016-09-09 10:36:01 -0700 | [diff] [blame] | 3970 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3971 | goto error; |
Yury Selivanov | 52c4e7c | 2016-09-09 10:36:01 -0700 | [diff] [blame] | 3972 | } |
| 3973 | |
| 3974 | is_async_generator = c->u->u_ste->ste_coroutine; |
| 3975 | |
| 3976 | if (is_async_generator && !is_async_function) { |
| 3977 | if (e->lineno > c->u->u_lineno) { |
| 3978 | c->u->u_lineno = e->lineno; |
| 3979 | c->u->u_lineno_set = 0; |
| 3980 | } |
| 3981 | compiler_error(c, "asynchronous comprehension outside of " |
| 3982 | "an asynchronous function"); |
| 3983 | goto error_in_scope; |
| 3984 | } |
Nick Coghlan | 650f0d0 | 2007-04-15 12:05:43 +0000 | [diff] [blame] | 3985 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 3986 | if (type != COMP_GENEXP) { |
| 3987 | int op; |
| 3988 | switch (type) { |
| 3989 | case COMP_LISTCOMP: |
| 3990 | op = BUILD_LIST; |
| 3991 | break; |
| 3992 | case COMP_SETCOMP: |
| 3993 | op = BUILD_SET; |
| 3994 | break; |
| 3995 | case COMP_DICTCOMP: |
| 3996 | op = BUILD_MAP; |
| 3997 | break; |
| 3998 | default: |
| 3999 | PyErr_Format(PyExc_SystemError, |
| 4000 | "unknown comprehension type %d", type); |
| 4001 | goto error_in_scope; |
| 4002 | } |
Nick Coghlan | 650f0d0 | 2007-04-15 12:05:43 +0000 | [diff] [blame] | 4003 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4004 | ADDOP_I(c, op, 0); |
| 4005 | } |
Nick Coghlan | 650f0d0 | 2007-04-15 12:05:43 +0000 | [diff] [blame] | 4006 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4007 | if (!compiler_comprehension_generator(c, generators, 0, elt, |
| 4008 | val, type)) |
| 4009 | goto error_in_scope; |
Nick Coghlan | 650f0d0 | 2007-04-15 12:05:43 +0000 | [diff] [blame] | 4010 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4011 | if (type != COMP_GENEXP) { |
| 4012 | ADDOP(c, RETURN_VALUE); |
| 4013 | } |
| 4014 | |
| 4015 | co = assemble(c, 1); |
Benjamin Peterson | 6b4f780 | 2013-10-20 17:50:28 -0400 | [diff] [blame] | 4016 | qualname = c->u->u_qualname; |
| 4017 | Py_INCREF(qualname); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4018 | compiler_exit_scope(c); |
Benjamin Peterson | 6b4f780 | 2013-10-20 17:50:28 -0400 | [diff] [blame] | 4019 | if (co == NULL) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4020 | goto error; |
| 4021 | |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 4022 | if (!compiler_make_closure(c, co, 0, qualname)) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4023 | goto error; |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 4024 | Py_DECREF(qualname); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4025 | Py_DECREF(co); |
| 4026 | |
Yury Selivanov | 52c4e7c | 2016-09-09 10:36:01 -0700 | [diff] [blame] | 4027 | VISIT(c, expr, outermost->iter); |
| 4028 | |
| 4029 | if (outermost->is_async) { |
| 4030 | ADDOP(c, GET_AITER); |
| 4031 | ADDOP_O(c, LOAD_CONST, Py_None, consts); |
| 4032 | ADDOP(c, YIELD_FROM); |
| 4033 | } else { |
| 4034 | ADDOP(c, GET_ITER); |
| 4035 | } |
| 4036 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4037 | ADDOP_I(c, CALL_FUNCTION, 1); |
Yury Selivanov | 52c4e7c | 2016-09-09 10:36:01 -0700 | [diff] [blame] | 4038 | |
| 4039 | if (is_async_generator && type != COMP_GENEXP) { |
| 4040 | ADDOP(c, GET_AWAITABLE); |
| 4041 | ADDOP_O(c, LOAD_CONST, Py_None, consts); |
| 4042 | ADDOP(c, YIELD_FROM); |
| 4043 | } |
| 4044 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4045 | return 1; |
Nick Coghlan | 650f0d0 | 2007-04-15 12:05:43 +0000 | [diff] [blame] | 4046 | error_in_scope: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4047 | compiler_exit_scope(c); |
Nick Coghlan | 650f0d0 | 2007-04-15 12:05:43 +0000 | [diff] [blame] | 4048 | error: |
Antoine Pitrou | 86a36b5 | 2011-11-25 18:56:07 +0100 | [diff] [blame] | 4049 | Py_XDECREF(qualname); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4050 | Py_XDECREF(co); |
| 4051 | return 0; |
Nick Coghlan | 650f0d0 | 2007-04-15 12:05:43 +0000 | [diff] [blame] | 4052 | } |
| 4053 | |
| 4054 | static int |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4055 | compiler_genexp(struct compiler *c, expr_ty e) |
| 4056 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4057 | static identifier name; |
| 4058 | if (!name) { |
| 4059 | name = PyUnicode_FromString("<genexpr>"); |
| 4060 | if (!name) |
| 4061 | return 0; |
| 4062 | } |
| 4063 | assert(e->kind == GeneratorExp_kind); |
| 4064 | return compiler_comprehension(c, e, COMP_GENEXP, name, |
| 4065 | e->v.GeneratorExp.generators, |
| 4066 | e->v.GeneratorExp.elt, NULL); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4067 | } |
| 4068 | |
| 4069 | static int |
Nick Coghlan | 650f0d0 | 2007-04-15 12:05:43 +0000 | [diff] [blame] | 4070 | compiler_listcomp(struct compiler *c, expr_ty e) |
| 4071 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4072 | static identifier name; |
| 4073 | if (!name) { |
| 4074 | name = PyUnicode_FromString("<listcomp>"); |
| 4075 | if (!name) |
| 4076 | return 0; |
| 4077 | } |
| 4078 | assert(e->kind == ListComp_kind); |
| 4079 | return compiler_comprehension(c, e, COMP_LISTCOMP, name, |
| 4080 | e->v.ListComp.generators, |
| 4081 | e->v.ListComp.elt, NULL); |
Nick Coghlan | 650f0d0 | 2007-04-15 12:05:43 +0000 | [diff] [blame] | 4082 | } |
| 4083 | |
| 4084 | static int |
| 4085 | compiler_setcomp(struct compiler *c, expr_ty e) |
| 4086 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4087 | static identifier name; |
| 4088 | if (!name) { |
| 4089 | name = PyUnicode_FromString("<setcomp>"); |
| 4090 | if (!name) |
| 4091 | return 0; |
| 4092 | } |
| 4093 | assert(e->kind == SetComp_kind); |
| 4094 | return compiler_comprehension(c, e, COMP_SETCOMP, name, |
| 4095 | e->v.SetComp.generators, |
| 4096 | e->v.SetComp.elt, NULL); |
Guido van Rossum | 992d4a3 | 2007-07-11 13:09:30 +0000 | [diff] [blame] | 4097 | } |
| 4098 | |
| 4099 | |
| 4100 | static int |
| 4101 | compiler_dictcomp(struct compiler *c, expr_ty e) |
| 4102 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4103 | static identifier name; |
| 4104 | if (!name) { |
| 4105 | name = PyUnicode_FromString("<dictcomp>"); |
| 4106 | if (!name) |
| 4107 | return 0; |
| 4108 | } |
| 4109 | assert(e->kind == DictComp_kind); |
| 4110 | return compiler_comprehension(c, e, COMP_DICTCOMP, name, |
| 4111 | e->v.DictComp.generators, |
| 4112 | e->v.DictComp.key, e->v.DictComp.value); |
Nick Coghlan | 650f0d0 | 2007-04-15 12:05:43 +0000 | [diff] [blame] | 4113 | } |
| 4114 | |
| 4115 | |
| 4116 | static int |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4117 | compiler_visit_keyword(struct compiler *c, keyword_ty k) |
| 4118 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4119 | VISIT(c, expr, k->value); |
| 4120 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4121 | } |
| 4122 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4123 | /* Test whether expression is constant. For constants, report |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4124 | whether they are true or false. |
| 4125 | |
| 4126 | Return values: 1 for true, 0 for false, -1 for non-constant. |
| 4127 | */ |
| 4128 | |
| 4129 | static int |
Georg Brandl | 8334fd9 | 2010-12-04 10:26:46 +0000 | [diff] [blame] | 4130 | expr_constant(struct compiler *c, expr_ty e) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4131 | { |
Serhiy Storchaka | 85b0f5b | 2016-11-20 10:16:47 +0200 | [diff] [blame] | 4132 | const char *id; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4133 | switch (e->kind) { |
| 4134 | case Ellipsis_kind: |
| 4135 | return 1; |
Victor Stinner | f2c1aa1 | 2016-01-26 00:40:57 +0100 | [diff] [blame] | 4136 | case Constant_kind: |
| 4137 | return PyObject_IsTrue(e->v.Constant.value); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4138 | case Num_kind: |
| 4139 | return PyObject_IsTrue(e->v.Num.n); |
| 4140 | case Str_kind: |
| 4141 | return PyObject_IsTrue(e->v.Str.s); |
| 4142 | case Name_kind: |
| 4143 | /* optimize away names that can't be reassigned */ |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 4144 | id = PyUnicode_AsUTF8(e->v.Name.id); |
Benjamin Peterson | 442f209 | 2012-12-06 17:41:04 -0500 | [diff] [blame] | 4145 | if (id && strcmp(id, "__debug__") == 0) |
| 4146 | return !c->c_optimize; |
| 4147 | return -1; |
| 4148 | case NameConstant_kind: { |
| 4149 | PyObject *o = e->v.NameConstant.value; |
| 4150 | if (o == Py_None) |
| 4151 | return 0; |
| 4152 | else if (o == Py_True) |
| 4153 | return 1; |
| 4154 | else if (o == Py_False) |
| 4155 | return 0; |
| 4156 | } |
Stefan Krah | f432a32 | 2017-08-21 13:09:59 +0200 | [diff] [blame^] | 4157 | /* fall through */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4158 | default: |
| 4159 | return -1; |
| 4160 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4161 | } |
| 4162 | |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 4163 | |
| 4164 | /* |
| 4165 | Implements the async with statement. |
| 4166 | |
| 4167 | The semantics outlined in that PEP are as follows: |
| 4168 | |
| 4169 | async with EXPR as VAR: |
| 4170 | BLOCK |
| 4171 | |
| 4172 | It is implemented roughly as: |
| 4173 | |
| 4174 | context = EXPR |
| 4175 | exit = context.__aexit__ # not calling it |
| 4176 | value = await context.__aenter__() |
| 4177 | try: |
| 4178 | VAR = value # if VAR present in the syntax |
| 4179 | BLOCK |
| 4180 | finally: |
| 4181 | if an exception was raised: |
Serhiy Storchaka | ec466a1 | 2015-06-11 00:09:32 +0300 | [diff] [blame] | 4182 | exc = copy of (exception, instance, traceback) |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 4183 | else: |
Serhiy Storchaka | ec466a1 | 2015-06-11 00:09:32 +0300 | [diff] [blame] | 4184 | exc = (None, None, None) |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 4185 | if not (await exit(*exc)): |
| 4186 | raise |
| 4187 | */ |
| 4188 | static int |
| 4189 | compiler_async_with(struct compiler *c, stmt_ty s, int pos) |
| 4190 | { |
| 4191 | basicblock *block, *finally; |
| 4192 | withitem_ty item = asdl_seq_GET(s->v.AsyncWith.items, pos); |
| 4193 | |
| 4194 | assert(s->kind == AsyncWith_kind); |
| 4195 | |
| 4196 | block = compiler_new_block(c); |
| 4197 | finally = compiler_new_block(c); |
| 4198 | if (!block || !finally) |
| 4199 | return 0; |
| 4200 | |
| 4201 | /* Evaluate EXPR */ |
| 4202 | VISIT(c, expr, item->context_expr); |
| 4203 | |
| 4204 | ADDOP(c, BEFORE_ASYNC_WITH); |
| 4205 | ADDOP(c, GET_AWAITABLE); |
| 4206 | ADDOP_O(c, LOAD_CONST, Py_None, consts); |
| 4207 | ADDOP(c, YIELD_FROM); |
| 4208 | |
| 4209 | ADDOP_JREL(c, SETUP_ASYNC_WITH, finally); |
| 4210 | |
| 4211 | /* SETUP_ASYNC_WITH pushes a finally block. */ |
| 4212 | compiler_use_next_block(c, block); |
| 4213 | if (!compiler_push_fblock(c, FINALLY_TRY, block)) { |
| 4214 | return 0; |
| 4215 | } |
| 4216 | |
| 4217 | if (item->optional_vars) { |
| 4218 | VISIT(c, expr, item->optional_vars); |
| 4219 | } |
| 4220 | else { |
| 4221 | /* Discard result from context.__aenter__() */ |
| 4222 | ADDOP(c, POP_TOP); |
| 4223 | } |
| 4224 | |
| 4225 | pos++; |
| 4226 | if (pos == asdl_seq_LEN(s->v.AsyncWith.items)) |
| 4227 | /* BLOCK code */ |
| 4228 | VISIT_SEQ(c, stmt, s->v.AsyncWith.body) |
| 4229 | else if (!compiler_async_with(c, s, pos)) |
| 4230 | return 0; |
| 4231 | |
| 4232 | /* End of try block; start the finally block */ |
| 4233 | ADDOP(c, POP_BLOCK); |
| 4234 | compiler_pop_fblock(c, FINALLY_TRY, block); |
| 4235 | |
| 4236 | ADDOP_O(c, LOAD_CONST, Py_None, consts); |
| 4237 | compiler_use_next_block(c, finally); |
| 4238 | if (!compiler_push_fblock(c, FINALLY_END, finally)) |
| 4239 | return 0; |
| 4240 | |
| 4241 | /* Finally block starts; context.__exit__ is on the stack under |
| 4242 | the exception or return information. Just issue our magic |
| 4243 | opcode. */ |
| 4244 | ADDOP(c, WITH_CLEANUP_START); |
| 4245 | |
| 4246 | ADDOP(c, GET_AWAITABLE); |
| 4247 | ADDOP_O(c, LOAD_CONST, Py_None, consts); |
| 4248 | ADDOP(c, YIELD_FROM); |
| 4249 | |
| 4250 | ADDOP(c, WITH_CLEANUP_FINISH); |
| 4251 | |
| 4252 | /* Finally block ends. */ |
| 4253 | ADDOP(c, END_FINALLY); |
| 4254 | compiler_pop_fblock(c, FINALLY_END, finally); |
| 4255 | return 1; |
| 4256 | } |
| 4257 | |
| 4258 | |
Guido van Rossum | c2e2074 | 2006-02-27 22:32:47 +0000 | [diff] [blame] | 4259 | /* |
| 4260 | Implements the with statement from PEP 343. |
| 4261 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4262 | The semantics outlined in that PEP are as follows: |
Guido van Rossum | c2e2074 | 2006-02-27 22:32:47 +0000 | [diff] [blame] | 4263 | |
| 4264 | with EXPR as VAR: |
| 4265 | BLOCK |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4266 | |
Guido van Rossum | c2e2074 | 2006-02-27 22:32:47 +0000 | [diff] [blame] | 4267 | It is implemented roughly as: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4268 | |
Thomas Wouters | 477c8d5 | 2006-05-27 19:21:47 +0000 | [diff] [blame] | 4269 | context = EXPR |
Guido van Rossum | c2e2074 | 2006-02-27 22:32:47 +0000 | [diff] [blame] | 4270 | exit = context.__exit__ # not calling it |
| 4271 | value = context.__enter__() |
| 4272 | try: |
| 4273 | VAR = value # if VAR present in the syntax |
| 4274 | BLOCK |
| 4275 | finally: |
| 4276 | if an exception was raised: |
Serhiy Storchaka | d741a88 | 2015-06-11 00:06:39 +0300 | [diff] [blame] | 4277 | exc = copy of (exception, instance, traceback) |
Guido van Rossum | c2e2074 | 2006-02-27 22:32:47 +0000 | [diff] [blame] | 4278 | else: |
Serhiy Storchaka | d741a88 | 2015-06-11 00:06:39 +0300 | [diff] [blame] | 4279 | exc = (None, None, None) |
Guido van Rossum | c2e2074 | 2006-02-27 22:32:47 +0000 | [diff] [blame] | 4280 | exit(*exc) |
| 4281 | */ |
| 4282 | static int |
Benjamin Peterson | bf1bbc1 | 2011-05-27 13:58:08 -0500 | [diff] [blame] | 4283 | compiler_with(struct compiler *c, stmt_ty s, int pos) |
Guido van Rossum | c2e2074 | 2006-02-27 22:32:47 +0000 | [diff] [blame] | 4284 | { |
Guido van Rossum | c2e2074 | 2006-02-27 22:32:47 +0000 | [diff] [blame] | 4285 | basicblock *block, *finally; |
Benjamin Peterson | bf1bbc1 | 2011-05-27 13:58:08 -0500 | [diff] [blame] | 4286 | withitem_ty item = asdl_seq_GET(s->v.With.items, pos); |
Guido van Rossum | c2e2074 | 2006-02-27 22:32:47 +0000 | [diff] [blame] | 4287 | |
| 4288 | assert(s->kind == With_kind); |
| 4289 | |
Guido van Rossum | c2e2074 | 2006-02-27 22:32:47 +0000 | [diff] [blame] | 4290 | block = compiler_new_block(c); |
| 4291 | finally = compiler_new_block(c); |
| 4292 | if (!block || !finally) |
Antoine Pitrou | 9aee2c8 | 2010-06-22 21:49:39 +0000 | [diff] [blame] | 4293 | return 0; |
Guido van Rossum | c2e2074 | 2006-02-27 22:32:47 +0000 | [diff] [blame] | 4294 | |
Thomas Wouters | 477c8d5 | 2006-05-27 19:21:47 +0000 | [diff] [blame] | 4295 | /* Evaluate EXPR */ |
Benjamin Peterson | bf1bbc1 | 2011-05-27 13:58:08 -0500 | [diff] [blame] | 4296 | VISIT(c, expr, item->context_expr); |
Benjamin Peterson | 876b2f2 | 2009-06-28 03:18:59 +0000 | [diff] [blame] | 4297 | ADDOP_JREL(c, SETUP_WITH, finally); |
Guido van Rossum | c2e2074 | 2006-02-27 22:32:47 +0000 | [diff] [blame] | 4298 | |
Benjamin Peterson | 876b2f2 | 2009-06-28 03:18:59 +0000 | [diff] [blame] | 4299 | /* SETUP_WITH pushes a finally block. */ |
Guido van Rossum | c2e2074 | 2006-02-27 22:32:47 +0000 | [diff] [blame] | 4300 | compiler_use_next_block(c, block); |
| 4301 | if (!compiler_push_fblock(c, FINALLY_TRY, block)) { |
Antoine Pitrou | 9aee2c8 | 2010-06-22 21:49:39 +0000 | [diff] [blame] | 4302 | return 0; |
Guido van Rossum | c2e2074 | 2006-02-27 22:32:47 +0000 | [diff] [blame] | 4303 | } |
| 4304 | |
Benjamin Peterson | bf1bbc1 | 2011-05-27 13:58:08 -0500 | [diff] [blame] | 4305 | if (item->optional_vars) { |
| 4306 | VISIT(c, expr, item->optional_vars); |
Benjamin Peterson | 876b2f2 | 2009-06-28 03:18:59 +0000 | [diff] [blame] | 4307 | } |
| 4308 | else { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4309 | /* Discard result from context.__enter__() */ |
Antoine Pitrou | 9aee2c8 | 2010-06-22 21:49:39 +0000 | [diff] [blame] | 4310 | ADDOP(c, POP_TOP); |
Guido van Rossum | c2e2074 | 2006-02-27 22:32:47 +0000 | [diff] [blame] | 4311 | } |
| 4312 | |
Benjamin Peterson | bf1bbc1 | 2011-05-27 13:58:08 -0500 | [diff] [blame] | 4313 | pos++; |
| 4314 | if (pos == asdl_seq_LEN(s->v.With.items)) |
| 4315 | /* BLOCK code */ |
| 4316 | VISIT_SEQ(c, stmt, s->v.With.body) |
| 4317 | else if (!compiler_with(c, s, pos)) |
| 4318 | return 0; |
Guido van Rossum | c2e2074 | 2006-02-27 22:32:47 +0000 | [diff] [blame] | 4319 | |
| 4320 | /* End of try block; start the finally block */ |
| 4321 | ADDOP(c, POP_BLOCK); |
| 4322 | compiler_pop_fblock(c, FINALLY_TRY, block); |
| 4323 | |
| 4324 | ADDOP_O(c, LOAD_CONST, Py_None, consts); |
| 4325 | compiler_use_next_block(c, finally); |
| 4326 | if (!compiler_push_fblock(c, FINALLY_END, finally)) |
Antoine Pitrou | 9aee2c8 | 2010-06-22 21:49:39 +0000 | [diff] [blame] | 4327 | return 0; |
Guido van Rossum | c2e2074 | 2006-02-27 22:32:47 +0000 | [diff] [blame] | 4328 | |
Christian Heimes | dd15f6c | 2008-03-16 00:07:10 +0000 | [diff] [blame] | 4329 | /* Finally block starts; context.__exit__ is on the stack under |
| 4330 | the exception or return information. Just issue our magic |
| 4331 | opcode. */ |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 4332 | ADDOP(c, WITH_CLEANUP_START); |
| 4333 | ADDOP(c, WITH_CLEANUP_FINISH); |
Guido van Rossum | c2e2074 | 2006-02-27 22:32:47 +0000 | [diff] [blame] | 4334 | |
| 4335 | /* Finally block ends. */ |
| 4336 | ADDOP(c, END_FINALLY); |
| 4337 | compiler_pop_fblock(c, FINALLY_END, finally); |
| 4338 | return 1; |
| 4339 | } |
| 4340 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4341 | static int |
| 4342 | compiler_visit_expr(struct compiler *c, expr_ty e) |
| 4343 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4344 | /* If expr e has a different line number than the last expr/stmt, |
| 4345 | set a new line number for the next instruction. |
| 4346 | */ |
| 4347 | if (e->lineno > c->u->u_lineno) { |
| 4348 | c->u->u_lineno = e->lineno; |
| 4349 | c->u->u_lineno_set = 0; |
| 4350 | } |
Benjamin Peterson | d4efd9e | 2010-09-20 23:02:10 +0000 | [diff] [blame] | 4351 | /* Updating the column offset is always harmless. */ |
| 4352 | c->u->u_col_offset = e->col_offset; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4353 | switch (e->kind) { |
| 4354 | case BoolOp_kind: |
| 4355 | return compiler_boolop(c, e); |
| 4356 | case BinOp_kind: |
| 4357 | VISIT(c, expr, e->v.BinOp.left); |
| 4358 | VISIT(c, expr, e->v.BinOp.right); |
| 4359 | ADDOP(c, binop(c, e->v.BinOp.op)); |
| 4360 | break; |
| 4361 | case UnaryOp_kind: |
| 4362 | VISIT(c, expr, e->v.UnaryOp.operand); |
| 4363 | ADDOP(c, unaryop(e->v.UnaryOp.op)); |
| 4364 | break; |
| 4365 | case Lambda_kind: |
| 4366 | return compiler_lambda(c, e); |
| 4367 | case IfExp_kind: |
| 4368 | return compiler_ifexp(c, e); |
| 4369 | case Dict_kind: |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 4370 | return compiler_dict(c, e); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4371 | case Set_kind: |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 4372 | return compiler_set(c, e); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4373 | case GeneratorExp_kind: |
| 4374 | return compiler_genexp(c, e); |
| 4375 | case ListComp_kind: |
| 4376 | return compiler_listcomp(c, e); |
| 4377 | case SetComp_kind: |
| 4378 | return compiler_setcomp(c, e); |
| 4379 | case DictComp_kind: |
| 4380 | return compiler_dictcomp(c, e); |
| 4381 | case Yield_kind: |
| 4382 | if (c->u->u_ste->ste_type != FunctionBlock) |
| 4383 | return compiler_error(c, "'yield' outside function"); |
Mark Dickinson | ded35ae | 2012-11-25 14:36:26 +0000 | [diff] [blame] | 4384 | if (e->v.Yield.value) { |
| 4385 | VISIT(c, expr, e->v.Yield.value); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4386 | } |
| 4387 | else { |
| 4388 | ADDOP_O(c, LOAD_CONST, Py_None, consts); |
| 4389 | } |
Mark Dickinson | ded35ae | 2012-11-25 14:36:26 +0000 | [diff] [blame] | 4390 | ADDOP(c, YIELD_VALUE); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4391 | break; |
Mark Dickinson | ded35ae | 2012-11-25 14:36:26 +0000 | [diff] [blame] | 4392 | case YieldFrom_kind: |
| 4393 | if (c->u->u_ste->ste_type != FunctionBlock) |
| 4394 | return compiler_error(c, "'yield' outside function"); |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 4395 | |
| 4396 | if (c->u->u_scope_type == COMPILER_SCOPE_ASYNC_FUNCTION) |
| 4397 | return compiler_error(c, "'yield from' inside async function"); |
| 4398 | |
Mark Dickinson | ded35ae | 2012-11-25 14:36:26 +0000 | [diff] [blame] | 4399 | VISIT(c, expr, e->v.YieldFrom.value); |
Yury Selivanov | 5376ba9 | 2015-06-22 12:19:30 -0400 | [diff] [blame] | 4400 | ADDOP(c, GET_YIELD_FROM_ITER); |
Mark Dickinson | ded35ae | 2012-11-25 14:36:26 +0000 | [diff] [blame] | 4401 | ADDOP_O(c, LOAD_CONST, Py_None, consts); |
| 4402 | ADDOP(c, YIELD_FROM); |
| 4403 | break; |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 4404 | case Await_kind: |
| 4405 | if (c->u->u_ste->ste_type != FunctionBlock) |
| 4406 | return compiler_error(c, "'await' outside function"); |
| 4407 | |
Yury Selivanov | 52c4e7c | 2016-09-09 10:36:01 -0700 | [diff] [blame] | 4408 | if (c->u->u_scope_type != COMPILER_SCOPE_ASYNC_FUNCTION && |
| 4409 | c->u->u_scope_type != COMPILER_SCOPE_COMPREHENSION) |
Yury Selivanov | 7544508 | 2015-05-11 22:57:16 -0400 | [diff] [blame] | 4410 | return compiler_error(c, "'await' outside async function"); |
| 4411 | |
| 4412 | VISIT(c, expr, e->v.Await.value); |
| 4413 | ADDOP(c, GET_AWAITABLE); |
| 4414 | ADDOP_O(c, LOAD_CONST, Py_None, consts); |
| 4415 | ADDOP(c, YIELD_FROM); |
| 4416 | break; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4417 | case Compare_kind: |
| 4418 | return compiler_compare(c, e); |
| 4419 | case Call_kind: |
| 4420 | return compiler_call(c, e); |
Victor Stinner | f2c1aa1 | 2016-01-26 00:40:57 +0100 | [diff] [blame] | 4421 | case Constant_kind: |
| 4422 | ADDOP_O(c, LOAD_CONST, e->v.Constant.value, consts); |
| 4423 | break; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4424 | case Num_kind: |
| 4425 | ADDOP_O(c, LOAD_CONST, e->v.Num.n, consts); |
| 4426 | break; |
| 4427 | case Str_kind: |
| 4428 | ADDOP_O(c, LOAD_CONST, e->v.Str.s, consts); |
| 4429 | break; |
Eric V. Smith | 235a6f0 | 2015-09-19 14:51:32 -0400 | [diff] [blame] | 4430 | case JoinedStr_kind: |
| 4431 | return compiler_joined_str(c, e); |
| 4432 | case FormattedValue_kind: |
| 4433 | return compiler_formatted_value(c, e); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4434 | case Bytes_kind: |
| 4435 | ADDOP_O(c, LOAD_CONST, e->v.Bytes.s, consts); |
| 4436 | break; |
| 4437 | case Ellipsis_kind: |
| 4438 | ADDOP_O(c, LOAD_CONST, Py_Ellipsis, consts); |
| 4439 | break; |
Benjamin Peterson | 442f209 | 2012-12-06 17:41:04 -0500 | [diff] [blame] | 4440 | case NameConstant_kind: |
| 4441 | ADDOP_O(c, LOAD_CONST, e->v.NameConstant.value, consts); |
| 4442 | break; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4443 | /* The following exprs can be assignment targets. */ |
| 4444 | case Attribute_kind: |
| 4445 | if (e->v.Attribute.ctx != AugStore) |
| 4446 | VISIT(c, expr, e->v.Attribute.value); |
| 4447 | switch (e->v.Attribute.ctx) { |
| 4448 | case AugLoad: |
| 4449 | ADDOP(c, DUP_TOP); |
Stefan Krah | f432a32 | 2017-08-21 13:09:59 +0200 | [diff] [blame^] | 4450 | /* Fall through */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4451 | case Load: |
| 4452 | ADDOP_NAME(c, LOAD_ATTR, e->v.Attribute.attr, names); |
| 4453 | break; |
| 4454 | case AugStore: |
| 4455 | ADDOP(c, ROT_TWO); |
Stefan Krah | f432a32 | 2017-08-21 13:09:59 +0200 | [diff] [blame^] | 4456 | /* Fall through */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4457 | case Store: |
| 4458 | ADDOP_NAME(c, STORE_ATTR, e->v.Attribute.attr, names); |
| 4459 | break; |
| 4460 | case Del: |
| 4461 | ADDOP_NAME(c, DELETE_ATTR, e->v.Attribute.attr, names); |
| 4462 | break; |
| 4463 | case Param: |
| 4464 | default: |
| 4465 | PyErr_SetString(PyExc_SystemError, |
| 4466 | "param invalid in attribute expression"); |
| 4467 | return 0; |
| 4468 | } |
| 4469 | break; |
| 4470 | case Subscript_kind: |
| 4471 | switch (e->v.Subscript.ctx) { |
| 4472 | case AugLoad: |
| 4473 | VISIT(c, expr, e->v.Subscript.value); |
| 4474 | VISIT_SLICE(c, e->v.Subscript.slice, AugLoad); |
| 4475 | break; |
| 4476 | case Load: |
| 4477 | VISIT(c, expr, e->v.Subscript.value); |
| 4478 | VISIT_SLICE(c, e->v.Subscript.slice, Load); |
| 4479 | break; |
| 4480 | case AugStore: |
| 4481 | VISIT_SLICE(c, e->v.Subscript.slice, AugStore); |
| 4482 | break; |
| 4483 | case Store: |
| 4484 | VISIT(c, expr, e->v.Subscript.value); |
| 4485 | VISIT_SLICE(c, e->v.Subscript.slice, Store); |
| 4486 | break; |
| 4487 | case Del: |
| 4488 | VISIT(c, expr, e->v.Subscript.value); |
| 4489 | VISIT_SLICE(c, e->v.Subscript.slice, Del); |
| 4490 | break; |
| 4491 | case Param: |
| 4492 | default: |
| 4493 | PyErr_SetString(PyExc_SystemError, |
| 4494 | "param invalid in subscript expression"); |
| 4495 | return 0; |
| 4496 | } |
| 4497 | break; |
| 4498 | case Starred_kind: |
| 4499 | switch (e->v.Starred.ctx) { |
| 4500 | case Store: |
| 4501 | /* In all legitimate cases, the Starred node was already replaced |
| 4502 | * by compiler_list/compiler_tuple. XXX: is that okay? */ |
| 4503 | return compiler_error(c, |
| 4504 | "starred assignment target must be in a list or tuple"); |
| 4505 | default: |
| 4506 | return compiler_error(c, |
Benjamin Peterson | 025e9eb | 2015-05-05 20:16:41 -0400 | [diff] [blame] | 4507 | "can't use starred expression here"); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4508 | } |
| 4509 | break; |
| 4510 | case Name_kind: |
| 4511 | return compiler_nameop(c, e->v.Name.id, e->v.Name.ctx); |
| 4512 | /* child nodes of List and Tuple will have expr_context set */ |
| 4513 | case List_kind: |
| 4514 | return compiler_list(c, e); |
| 4515 | case Tuple_kind: |
| 4516 | return compiler_tuple(c, e); |
| 4517 | } |
| 4518 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4519 | } |
| 4520 | |
| 4521 | static int |
| 4522 | compiler_augassign(struct compiler *c, stmt_ty s) |
| 4523 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4524 | expr_ty e = s->v.AugAssign.target; |
| 4525 | expr_ty auge; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4526 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4527 | assert(s->kind == AugAssign_kind); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4528 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4529 | switch (e->kind) { |
| 4530 | case Attribute_kind: |
| 4531 | auge = Attribute(e->v.Attribute.value, e->v.Attribute.attr, |
| 4532 | AugLoad, e->lineno, e->col_offset, c->c_arena); |
| 4533 | if (auge == NULL) |
| 4534 | return 0; |
| 4535 | VISIT(c, expr, auge); |
| 4536 | VISIT(c, expr, s->v.AugAssign.value); |
| 4537 | ADDOP(c, inplace_binop(c, s->v.AugAssign.op)); |
| 4538 | auge->v.Attribute.ctx = AugStore; |
| 4539 | VISIT(c, expr, auge); |
| 4540 | break; |
| 4541 | case Subscript_kind: |
| 4542 | auge = Subscript(e->v.Subscript.value, e->v.Subscript.slice, |
| 4543 | AugLoad, e->lineno, e->col_offset, c->c_arena); |
| 4544 | if (auge == NULL) |
| 4545 | return 0; |
| 4546 | VISIT(c, expr, auge); |
| 4547 | VISIT(c, expr, s->v.AugAssign.value); |
| 4548 | ADDOP(c, inplace_binop(c, s->v.AugAssign.op)); |
| 4549 | auge->v.Subscript.ctx = AugStore; |
| 4550 | VISIT(c, expr, auge); |
| 4551 | break; |
| 4552 | case Name_kind: |
| 4553 | if (!compiler_nameop(c, e->v.Name.id, Load)) |
| 4554 | return 0; |
| 4555 | VISIT(c, expr, s->v.AugAssign.value); |
| 4556 | ADDOP(c, inplace_binop(c, s->v.AugAssign.op)); |
| 4557 | return compiler_nameop(c, e->v.Name.id, Store); |
| 4558 | default: |
| 4559 | PyErr_Format(PyExc_SystemError, |
| 4560 | "invalid node type (%d) for augmented assignment", |
| 4561 | e->kind); |
| 4562 | return 0; |
| 4563 | } |
| 4564 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4565 | } |
| 4566 | |
| 4567 | static int |
Yury Selivanov | f8cb8a1 | 2016-09-08 20:50:03 -0700 | [diff] [blame] | 4568 | check_ann_expr(struct compiler *c, expr_ty e) |
| 4569 | { |
| 4570 | VISIT(c, expr, e); |
| 4571 | ADDOP(c, POP_TOP); |
| 4572 | return 1; |
| 4573 | } |
| 4574 | |
| 4575 | static int |
| 4576 | check_annotation(struct compiler *c, stmt_ty s) |
| 4577 | { |
| 4578 | /* Annotations are only evaluated in a module or class. */ |
| 4579 | if (c->u->u_scope_type == COMPILER_SCOPE_MODULE || |
| 4580 | c->u->u_scope_type == COMPILER_SCOPE_CLASS) { |
| 4581 | return check_ann_expr(c, s->v.AnnAssign.annotation); |
| 4582 | } |
| 4583 | return 1; |
| 4584 | } |
| 4585 | |
| 4586 | static int |
| 4587 | check_ann_slice(struct compiler *c, slice_ty sl) |
| 4588 | { |
| 4589 | switch(sl->kind) { |
| 4590 | case Index_kind: |
| 4591 | return check_ann_expr(c, sl->v.Index.value); |
| 4592 | case Slice_kind: |
| 4593 | if (sl->v.Slice.lower && !check_ann_expr(c, sl->v.Slice.lower)) { |
| 4594 | return 0; |
| 4595 | } |
| 4596 | if (sl->v.Slice.upper && !check_ann_expr(c, sl->v.Slice.upper)) { |
| 4597 | return 0; |
| 4598 | } |
| 4599 | if (sl->v.Slice.step && !check_ann_expr(c, sl->v.Slice.step)) { |
| 4600 | return 0; |
| 4601 | } |
| 4602 | break; |
| 4603 | default: |
| 4604 | PyErr_SetString(PyExc_SystemError, |
| 4605 | "unexpected slice kind"); |
| 4606 | return 0; |
| 4607 | } |
| 4608 | return 1; |
| 4609 | } |
| 4610 | |
| 4611 | static int |
| 4612 | check_ann_subscr(struct compiler *c, slice_ty sl) |
| 4613 | { |
| 4614 | /* We check that everything in a subscript is defined at runtime. */ |
| 4615 | Py_ssize_t i, n; |
| 4616 | |
| 4617 | switch (sl->kind) { |
| 4618 | case Index_kind: |
| 4619 | case Slice_kind: |
| 4620 | if (!check_ann_slice(c, sl)) { |
| 4621 | return 0; |
| 4622 | } |
| 4623 | break; |
| 4624 | case ExtSlice_kind: |
| 4625 | n = asdl_seq_LEN(sl->v.ExtSlice.dims); |
| 4626 | for (i = 0; i < n; i++) { |
| 4627 | slice_ty subsl = (slice_ty)asdl_seq_GET(sl->v.ExtSlice.dims, i); |
| 4628 | switch (subsl->kind) { |
| 4629 | case Index_kind: |
| 4630 | case Slice_kind: |
| 4631 | if (!check_ann_slice(c, subsl)) { |
| 4632 | return 0; |
| 4633 | } |
| 4634 | break; |
| 4635 | case ExtSlice_kind: |
| 4636 | default: |
| 4637 | PyErr_SetString(PyExc_SystemError, |
| 4638 | "extended slice invalid in nested slice"); |
| 4639 | return 0; |
| 4640 | } |
| 4641 | } |
| 4642 | break; |
| 4643 | default: |
| 4644 | PyErr_Format(PyExc_SystemError, |
| 4645 | "invalid subscript kind %d", sl->kind); |
| 4646 | return 0; |
| 4647 | } |
| 4648 | return 1; |
| 4649 | } |
| 4650 | |
| 4651 | static int |
| 4652 | compiler_annassign(struct compiler *c, stmt_ty s) |
| 4653 | { |
| 4654 | expr_ty targ = s->v.AnnAssign.target; |
Guido van Rossum | 015d874 | 2016-09-11 09:45:24 -0700 | [diff] [blame] | 4655 | PyObject* mangled; |
Yury Selivanov | f8cb8a1 | 2016-09-08 20:50:03 -0700 | [diff] [blame] | 4656 | |
| 4657 | assert(s->kind == AnnAssign_kind); |
| 4658 | |
| 4659 | /* We perform the actual assignment first. */ |
| 4660 | if (s->v.AnnAssign.value) { |
| 4661 | VISIT(c, expr, s->v.AnnAssign.value); |
| 4662 | VISIT(c, expr, targ); |
| 4663 | } |
| 4664 | switch (targ->kind) { |
| 4665 | case Name_kind: |
| 4666 | /* If we have a simple name in a module or class, store annotation. */ |
| 4667 | if (s->v.AnnAssign.simple && |
| 4668 | (c->u->u_scope_type == COMPILER_SCOPE_MODULE || |
| 4669 | c->u->u_scope_type == COMPILER_SCOPE_CLASS)) { |
Guido van Rossum | 015d874 | 2016-09-11 09:45:24 -0700 | [diff] [blame] | 4670 | mangled = _Py_Mangle(c->u->u_private, targ->v.Name.id); |
| 4671 | if (!mangled) { |
| 4672 | return 0; |
| 4673 | } |
Yury Selivanov | f8cb8a1 | 2016-09-08 20:50:03 -0700 | [diff] [blame] | 4674 | VISIT(c, expr, s->v.AnnAssign.annotation); |
Guido van Rossum | 015d874 | 2016-09-11 09:45:24 -0700 | [diff] [blame] | 4675 | /* ADDOP_N decrefs its argument */ |
| 4676 | ADDOP_N(c, STORE_ANNOTATION, mangled, names); |
Yury Selivanov | f8cb8a1 | 2016-09-08 20:50:03 -0700 | [diff] [blame] | 4677 | } |
| 4678 | break; |
| 4679 | case Attribute_kind: |
| 4680 | if (!s->v.AnnAssign.value && |
| 4681 | !check_ann_expr(c, targ->v.Attribute.value)) { |
| 4682 | return 0; |
| 4683 | } |
| 4684 | break; |
| 4685 | case Subscript_kind: |
| 4686 | if (!s->v.AnnAssign.value && |
| 4687 | (!check_ann_expr(c, targ->v.Subscript.value) || |
| 4688 | !check_ann_subscr(c, targ->v.Subscript.slice))) { |
| 4689 | return 0; |
| 4690 | } |
| 4691 | break; |
| 4692 | default: |
| 4693 | PyErr_Format(PyExc_SystemError, |
| 4694 | "invalid node type (%d) for annotated assignment", |
| 4695 | targ->kind); |
| 4696 | return 0; |
| 4697 | } |
| 4698 | /* Annotation is evaluated last. */ |
| 4699 | if (!s->v.AnnAssign.simple && !check_annotation(c, s)) { |
| 4700 | return 0; |
| 4701 | } |
| 4702 | return 1; |
| 4703 | } |
| 4704 | |
| 4705 | static int |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4706 | compiler_push_fblock(struct compiler *c, enum fblocktype t, basicblock *b) |
| 4707 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4708 | struct fblockinfo *f; |
| 4709 | if (c->u->u_nfblocks >= CO_MAXBLOCKS) { |
Benjamin Peterson | e09ed54 | 2016-07-14 22:00:03 -0700 | [diff] [blame] | 4710 | PyErr_SetString(PyExc_SyntaxError, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4711 | "too many statically nested blocks"); |
| 4712 | return 0; |
| 4713 | } |
| 4714 | f = &c->u->u_fblock[c->u->u_nfblocks++]; |
| 4715 | f->fb_type = t; |
| 4716 | f->fb_block = b; |
| 4717 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4718 | } |
| 4719 | |
| 4720 | static void |
| 4721 | compiler_pop_fblock(struct compiler *c, enum fblocktype t, basicblock *b) |
| 4722 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4723 | struct compiler_unit *u = c->u; |
| 4724 | assert(u->u_nfblocks > 0); |
| 4725 | u->u_nfblocks--; |
| 4726 | assert(u->u_fblock[u->u_nfblocks].fb_type == t); |
| 4727 | assert(u->u_fblock[u->u_nfblocks].fb_block == b); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4728 | } |
| 4729 | |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 4730 | static int |
| 4731 | compiler_in_loop(struct compiler *c) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4732 | int i; |
| 4733 | struct compiler_unit *u = c->u; |
| 4734 | for (i = 0; i < u->u_nfblocks; ++i) { |
| 4735 | if (u->u_fblock[i].fb_type == LOOP) |
| 4736 | return 1; |
| 4737 | } |
| 4738 | return 0; |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 4739 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4740 | /* Raises a SyntaxError and returns 0. |
| 4741 | If something goes wrong, a different exception may be raised. |
| 4742 | */ |
| 4743 | |
| 4744 | static int |
| 4745 | compiler_error(struct compiler *c, const char *errstr) |
| 4746 | { |
Benjamin Peterson | 43b0686 | 2011-05-27 09:08:01 -0500 | [diff] [blame] | 4747 | PyObject *loc; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4748 | PyObject *u = NULL, *v = NULL; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4749 | |
Victor Stinner | 14e461d | 2013-08-26 22:28:21 +0200 | [diff] [blame] | 4750 | loc = PyErr_ProgramTextObject(c->c_filename, c->u->u_lineno); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4751 | if (!loc) { |
| 4752 | Py_INCREF(Py_None); |
| 4753 | loc = Py_None; |
| 4754 | } |
Victor Stinner | 14e461d | 2013-08-26 22:28:21 +0200 | [diff] [blame] | 4755 | u = Py_BuildValue("(OiiO)", c->c_filename, c->u->u_lineno, |
Benjamin Peterson | d4efd9e | 2010-09-20 23:02:10 +0000 | [diff] [blame] | 4756 | c->u->u_col_offset, loc); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4757 | if (!u) |
| 4758 | goto exit; |
| 4759 | v = Py_BuildValue("(zO)", errstr, u); |
| 4760 | if (!v) |
| 4761 | goto exit; |
| 4762 | PyErr_SetObject(PyExc_SyntaxError, v); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4763 | exit: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4764 | Py_DECREF(loc); |
| 4765 | Py_XDECREF(u); |
| 4766 | Py_XDECREF(v); |
| 4767 | return 0; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4768 | } |
| 4769 | |
| 4770 | static int |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4771 | compiler_handle_subscr(struct compiler *c, const char *kind, |
| 4772 | expr_context_ty ctx) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4773 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4774 | int op = 0; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4775 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4776 | /* XXX this code is duplicated */ |
| 4777 | switch (ctx) { |
| 4778 | case AugLoad: /* fall through to Load */ |
| 4779 | case Load: op = BINARY_SUBSCR; break; |
| 4780 | case AugStore:/* fall through to Store */ |
| 4781 | case Store: op = STORE_SUBSCR; break; |
| 4782 | case Del: op = DELETE_SUBSCR; break; |
| 4783 | case Param: |
| 4784 | PyErr_Format(PyExc_SystemError, |
| 4785 | "invalid %s kind %d in subscript\n", |
| 4786 | kind, ctx); |
| 4787 | return 0; |
| 4788 | } |
| 4789 | if (ctx == AugLoad) { |
Antoine Pitrou | 74a69fa | 2010-09-04 18:43:52 +0000 | [diff] [blame] | 4790 | ADDOP(c, DUP_TOP_TWO); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4791 | } |
| 4792 | else if (ctx == AugStore) { |
| 4793 | ADDOP(c, ROT_THREE); |
| 4794 | } |
| 4795 | ADDOP(c, op); |
| 4796 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4797 | } |
| 4798 | |
| 4799 | static int |
| 4800 | compiler_slice(struct compiler *c, slice_ty s, expr_context_ty ctx) |
| 4801 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4802 | int n = 2; |
| 4803 | assert(s->kind == Slice_kind); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4804 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4805 | /* only handles the cases where BUILD_SLICE is emitted */ |
| 4806 | if (s->v.Slice.lower) { |
| 4807 | VISIT(c, expr, s->v.Slice.lower); |
| 4808 | } |
| 4809 | else { |
| 4810 | ADDOP_O(c, LOAD_CONST, Py_None, consts); |
| 4811 | } |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4812 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4813 | if (s->v.Slice.upper) { |
| 4814 | VISIT(c, expr, s->v.Slice.upper); |
| 4815 | } |
| 4816 | else { |
| 4817 | ADDOP_O(c, LOAD_CONST, Py_None, consts); |
| 4818 | } |
| 4819 | |
| 4820 | if (s->v.Slice.step) { |
| 4821 | n++; |
| 4822 | VISIT(c, expr, s->v.Slice.step); |
| 4823 | } |
| 4824 | ADDOP_I(c, BUILD_SLICE, n); |
| 4825 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4826 | } |
| 4827 | |
| 4828 | static int |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4829 | compiler_visit_nested_slice(struct compiler *c, slice_ty s, |
| 4830 | expr_context_ty ctx) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4831 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4832 | switch (s->kind) { |
| 4833 | case Slice_kind: |
| 4834 | return compiler_slice(c, s, ctx); |
| 4835 | case Index_kind: |
| 4836 | VISIT(c, expr, s->v.Index.value); |
| 4837 | break; |
| 4838 | case ExtSlice_kind: |
| 4839 | default: |
| 4840 | PyErr_SetString(PyExc_SystemError, |
| 4841 | "extended slice invalid in nested slice"); |
| 4842 | return 0; |
| 4843 | } |
| 4844 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4845 | } |
| 4846 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4847 | static int |
| 4848 | compiler_visit_slice(struct compiler *c, slice_ty s, expr_context_ty ctx) |
| 4849 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4850 | char * kindname = NULL; |
| 4851 | switch (s->kind) { |
| 4852 | case Index_kind: |
| 4853 | kindname = "index"; |
| 4854 | if (ctx != AugStore) { |
| 4855 | VISIT(c, expr, s->v.Index.value); |
| 4856 | } |
| 4857 | break; |
| 4858 | case Slice_kind: |
| 4859 | kindname = "slice"; |
| 4860 | if (ctx != AugStore) { |
| 4861 | if (!compiler_slice(c, s, ctx)) |
| 4862 | return 0; |
| 4863 | } |
| 4864 | break; |
| 4865 | case ExtSlice_kind: |
| 4866 | kindname = "extended slice"; |
| 4867 | if (ctx != AugStore) { |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 4868 | Py_ssize_t i, n = asdl_seq_LEN(s->v.ExtSlice.dims); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4869 | for (i = 0; i < n; i++) { |
| 4870 | slice_ty sub = (slice_ty)asdl_seq_GET( |
| 4871 | s->v.ExtSlice.dims, i); |
| 4872 | if (!compiler_visit_nested_slice(c, sub, ctx)) |
| 4873 | return 0; |
| 4874 | } |
| 4875 | ADDOP_I(c, BUILD_TUPLE, n); |
| 4876 | } |
| 4877 | break; |
| 4878 | default: |
| 4879 | PyErr_Format(PyExc_SystemError, |
| 4880 | "invalid subscript kind %d", s->kind); |
| 4881 | return 0; |
| 4882 | } |
| 4883 | return compiler_handle_subscr(c, kindname, ctx); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4884 | } |
| 4885 | |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 4886 | /* End of the compiler section, beginning of the assembler section */ |
| 4887 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4888 | /* do depth-first search of basic block graph, starting with block. |
| 4889 | post records the block indices in post-order. |
| 4890 | |
| 4891 | XXX must handle implicit jumps from one block to next |
| 4892 | */ |
| 4893 | |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 4894 | struct assembler { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4895 | PyObject *a_bytecode; /* string containing bytecode */ |
| 4896 | int a_offset; /* offset into bytecode */ |
| 4897 | int a_nblocks; /* number of reachable blocks */ |
| 4898 | basicblock **a_postorder; /* list of blocks in dfs postorder */ |
| 4899 | PyObject *a_lnotab; /* string containing lnotab */ |
| 4900 | int a_lnotab_off; /* offset into lnotab */ |
| 4901 | int a_lineno; /* last lineno of emitted instruction */ |
| 4902 | int a_lineno_off; /* bytecode offset of last lineno */ |
Thomas Wouters | 89f507f | 2006-12-13 04:49:30 +0000 | [diff] [blame] | 4903 | }; |
| 4904 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4905 | static void |
| 4906 | dfs(struct compiler *c, basicblock *b, struct assembler *a) |
| 4907 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4908 | int i; |
| 4909 | struct instr *instr = NULL; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4910 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4911 | if (b->b_seen) |
| 4912 | return; |
| 4913 | b->b_seen = 1; |
| 4914 | if (b->b_next != NULL) |
| 4915 | dfs(c, b->b_next, a); |
| 4916 | for (i = 0; i < b->b_iused; i++) { |
| 4917 | instr = &b->b_instr[i]; |
| 4918 | if (instr->i_jrel || instr->i_jabs) |
| 4919 | dfs(c, instr->i_target, a); |
| 4920 | } |
| 4921 | a->a_postorder[a->a_nblocks++] = b; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4922 | } |
| 4923 | |
Neal Norwitz | 2744c6c | 2005-11-13 01:08:38 +0000 | [diff] [blame] | 4924 | static int |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4925 | stackdepth_walk(struct compiler *c, basicblock *b, int depth, int maxdepth) |
| 4926 | { |
Larry Hastings | 3a90797 | 2013-11-23 14:49:22 -0800 | [diff] [blame] | 4927 | int i, target_depth, effect; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4928 | struct instr *instr; |
| 4929 | if (b->b_seen || b->b_startdepth >= depth) |
| 4930 | return maxdepth; |
| 4931 | b->b_seen = 1; |
| 4932 | b->b_startdepth = depth; |
| 4933 | for (i = 0; i < b->b_iused; i++) { |
| 4934 | instr = &b->b_instr[i]; |
Larry Hastings | 3a90797 | 2013-11-23 14:49:22 -0800 | [diff] [blame] | 4935 | effect = PyCompile_OpcodeStackEffect(instr->i_opcode, instr->i_oparg); |
| 4936 | if (effect == PY_INVALID_STACK_EFFECT) { |
| 4937 | fprintf(stderr, "opcode = %d\n", instr->i_opcode); |
| 4938 | Py_FatalError("PyCompile_OpcodeStackEffect()"); |
| 4939 | } |
| 4940 | depth += effect; |
| 4941 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4942 | if (depth > maxdepth) |
| 4943 | maxdepth = depth; |
| 4944 | assert(depth >= 0); /* invalid code or bug in stackdepth() */ |
| 4945 | if (instr->i_jrel || instr->i_jabs) { |
| 4946 | target_depth = depth; |
| 4947 | if (instr->i_opcode == FOR_ITER) { |
| 4948 | target_depth = depth-2; |
Antoine Pitrou | 9961405 | 2014-05-23 11:46:03 +0200 | [diff] [blame] | 4949 | } |
| 4950 | else if (instr->i_opcode == SETUP_FINALLY || |
| 4951 | instr->i_opcode == SETUP_EXCEPT) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4952 | target_depth = depth+3; |
| 4953 | if (target_depth > maxdepth) |
| 4954 | maxdepth = target_depth; |
| 4955 | } |
Antoine Pitrou | 9961405 | 2014-05-23 11:46:03 +0200 | [diff] [blame] | 4956 | else if (instr->i_opcode == JUMP_IF_TRUE_OR_POP || |
| 4957 | instr->i_opcode == JUMP_IF_FALSE_OR_POP) |
| 4958 | depth = depth - 1; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4959 | maxdepth = stackdepth_walk(c, instr->i_target, |
| 4960 | target_depth, maxdepth); |
| 4961 | if (instr->i_opcode == JUMP_ABSOLUTE || |
| 4962 | instr->i_opcode == JUMP_FORWARD) { |
| 4963 | goto out; /* remaining code is dead */ |
| 4964 | } |
| 4965 | } |
| 4966 | } |
| 4967 | if (b->b_next) |
| 4968 | maxdepth = stackdepth_walk(c, b->b_next, depth, maxdepth); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4969 | out: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4970 | b->b_seen = 0; |
| 4971 | return maxdepth; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4972 | } |
| 4973 | |
| 4974 | /* Find the flow path that needs the largest stack. We assume that |
| 4975 | * cycles in the flow graph have no net effect on the stack depth. |
| 4976 | */ |
| 4977 | static int |
| 4978 | stackdepth(struct compiler *c) |
| 4979 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4980 | basicblock *b, *entryblock; |
| 4981 | entryblock = NULL; |
| 4982 | for (b = c->u->u_blocks; b != NULL; b = b->b_list) { |
| 4983 | b->b_seen = 0; |
| 4984 | b->b_startdepth = INT_MIN; |
| 4985 | entryblock = b; |
| 4986 | } |
| 4987 | if (!entryblock) |
| 4988 | return 0; |
| 4989 | return stackdepth_walk(c, entryblock, 0, 0); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 4990 | } |
| 4991 | |
| 4992 | static int |
| 4993 | assemble_init(struct assembler *a, int nblocks, int firstlineno) |
| 4994 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 4995 | memset(a, 0, sizeof(struct assembler)); |
| 4996 | a->a_lineno = firstlineno; |
| 4997 | a->a_bytecode = PyBytes_FromStringAndSize(NULL, DEFAULT_CODE_SIZE); |
| 4998 | if (!a->a_bytecode) |
| 4999 | return 0; |
| 5000 | a->a_lnotab = PyBytes_FromStringAndSize(NULL, DEFAULT_LNOTAB_SIZE); |
| 5001 | if (!a->a_lnotab) |
| 5002 | return 0; |
Benjamin Peterson | 2f8bfef | 2016-09-07 09:26:18 -0700 | [diff] [blame] | 5003 | if ((size_t)nblocks > SIZE_MAX / sizeof(basicblock *)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5004 | PyErr_NoMemory(); |
| 5005 | return 0; |
| 5006 | } |
| 5007 | a->a_postorder = (basicblock **)PyObject_Malloc( |
| 5008 | sizeof(basicblock *) * nblocks); |
| 5009 | if (!a->a_postorder) { |
| 5010 | PyErr_NoMemory(); |
| 5011 | return 0; |
| 5012 | } |
| 5013 | return 1; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 5014 | } |
| 5015 | |
| 5016 | static void |
| 5017 | assemble_free(struct assembler *a) |
| 5018 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5019 | Py_XDECREF(a->a_bytecode); |
| 5020 | Py_XDECREF(a->a_lnotab); |
| 5021 | if (a->a_postorder) |
| 5022 | PyObject_Free(a->a_postorder); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 5023 | } |
| 5024 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 5025 | static int |
| 5026 | blocksize(basicblock *b) |
| 5027 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5028 | int i; |
| 5029 | int size = 0; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 5030 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5031 | for (i = 0; i < b->b_iused; i++) |
Serhiy Storchaka | b0f80b0 | 2016-05-24 09:15:14 +0300 | [diff] [blame] | 5032 | size += instrsize(b->b_instr[i].i_oparg); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5033 | return size; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 5034 | } |
| 5035 | |
Alexandre Vassalotti | 7b82b40 | 2009-07-21 04:30:03 +0000 | [diff] [blame] | 5036 | /* Appends a pair to the end of the line number table, a_lnotab, representing |
| 5037 | the instruction's bytecode offset and line number. See |
| 5038 | Objects/lnotab_notes.txt for the description of the line number table. */ |
Tim Peters | 2a7f384 | 2001-06-09 09:26:21 +0000 | [diff] [blame] | 5039 | |
Guido van Rossum | f68d8e5 | 2001-04-14 17:55:09 +0000 | [diff] [blame] | 5040 | static int |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 5041 | assemble_lnotab(struct assembler *a, struct instr *i) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5042 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5043 | int d_bytecode, d_lineno; |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 5044 | Py_ssize_t len; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5045 | unsigned char *lnotab; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 5046 | |
Serhiy Storchaka | ab87400 | 2016-09-11 13:48:15 +0300 | [diff] [blame] | 5047 | d_bytecode = (a->a_offset - a->a_lineno_off) * sizeof(_Py_CODEUNIT); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5048 | d_lineno = i->i_lineno - a->a_lineno; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 5049 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5050 | assert(d_bytecode >= 0); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 5051 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5052 | if(d_bytecode == 0 && d_lineno == 0) |
| 5053 | return 1; |
Guido van Rossum | 4bad92c | 1991-07-27 21:34:52 +0000 | [diff] [blame] | 5054 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5055 | if (d_bytecode > 255) { |
| 5056 | int j, nbytes, ncodes = d_bytecode / 255; |
| 5057 | nbytes = a->a_lnotab_off + 2 * ncodes; |
| 5058 | len = PyBytes_GET_SIZE(a->a_lnotab); |
| 5059 | if (nbytes >= len) { |
| 5060 | if ((len <= INT_MAX / 2) && (len * 2 < nbytes)) |
| 5061 | len = nbytes; |
| 5062 | else if (len <= INT_MAX / 2) |
| 5063 | len *= 2; |
| 5064 | else { |
| 5065 | PyErr_NoMemory(); |
| 5066 | return 0; |
| 5067 | } |
| 5068 | if (_PyBytes_Resize(&a->a_lnotab, len) < 0) |
| 5069 | return 0; |
| 5070 | } |
| 5071 | lnotab = (unsigned char *) |
| 5072 | PyBytes_AS_STRING(a->a_lnotab) + a->a_lnotab_off; |
| 5073 | for (j = 0; j < ncodes; j++) { |
| 5074 | *lnotab++ = 255; |
| 5075 | *lnotab++ = 0; |
| 5076 | } |
| 5077 | d_bytecode -= ncodes * 255; |
| 5078 | a->a_lnotab_off += ncodes * 2; |
| 5079 | } |
Victor Stinner | f3914eb | 2016-01-20 12:16:21 +0100 | [diff] [blame] | 5080 | assert(0 <= d_bytecode && d_bytecode <= 255); |
| 5081 | |
| 5082 | if (d_lineno < -128 || 127 < d_lineno) { |
| 5083 | int j, nbytes, ncodes, k; |
| 5084 | if (d_lineno < 0) { |
| 5085 | k = -128; |
| 5086 | /* use division on positive numbers */ |
| 5087 | ncodes = (-d_lineno) / 128; |
| 5088 | } |
| 5089 | else { |
| 5090 | k = 127; |
| 5091 | ncodes = d_lineno / 127; |
| 5092 | } |
| 5093 | d_lineno -= ncodes * k; |
| 5094 | assert(ncodes >= 1); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5095 | nbytes = a->a_lnotab_off + 2 * ncodes; |
| 5096 | len = PyBytes_GET_SIZE(a->a_lnotab); |
| 5097 | if (nbytes >= len) { |
| 5098 | if ((len <= INT_MAX / 2) && len * 2 < nbytes) |
| 5099 | len = nbytes; |
| 5100 | else if (len <= INT_MAX / 2) |
| 5101 | len *= 2; |
| 5102 | else { |
| 5103 | PyErr_NoMemory(); |
| 5104 | return 0; |
| 5105 | } |
| 5106 | if (_PyBytes_Resize(&a->a_lnotab, len) < 0) |
| 5107 | return 0; |
| 5108 | } |
| 5109 | lnotab = (unsigned char *) |
| 5110 | PyBytes_AS_STRING(a->a_lnotab) + a->a_lnotab_off; |
| 5111 | *lnotab++ = d_bytecode; |
Victor Stinner | f3914eb | 2016-01-20 12:16:21 +0100 | [diff] [blame] | 5112 | *lnotab++ = k; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5113 | d_bytecode = 0; |
| 5114 | for (j = 1; j < ncodes; j++) { |
| 5115 | *lnotab++ = 0; |
Victor Stinner | f3914eb | 2016-01-20 12:16:21 +0100 | [diff] [blame] | 5116 | *lnotab++ = k; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5117 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5118 | a->a_lnotab_off += ncodes * 2; |
| 5119 | } |
Victor Stinner | f3914eb | 2016-01-20 12:16:21 +0100 | [diff] [blame] | 5120 | assert(-128 <= d_lineno && d_lineno <= 127); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 5121 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5122 | len = PyBytes_GET_SIZE(a->a_lnotab); |
| 5123 | if (a->a_lnotab_off + 2 >= len) { |
| 5124 | if (_PyBytes_Resize(&a->a_lnotab, len * 2) < 0) |
| 5125 | return 0; |
| 5126 | } |
| 5127 | lnotab = (unsigned char *) |
| 5128 | PyBytes_AS_STRING(a->a_lnotab) + a->a_lnotab_off; |
Tim Peters | 51e2651 | 2001-09-07 08:45:55 +0000 | [diff] [blame] | 5129 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5130 | a->a_lnotab_off += 2; |
| 5131 | if (d_bytecode) { |
| 5132 | *lnotab++ = d_bytecode; |
Victor Stinner | 4f2dab5 | 2011-05-27 16:46:51 +0200 | [diff] [blame] | 5133 | *lnotab++ = d_lineno; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5134 | } |
| 5135 | else { /* First line of a block; def stmt, etc. */ |
| 5136 | *lnotab++ = 0; |
Victor Stinner | 4f2dab5 | 2011-05-27 16:46:51 +0200 | [diff] [blame] | 5137 | *lnotab++ = d_lineno; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5138 | } |
| 5139 | a->a_lineno = i->i_lineno; |
| 5140 | a->a_lineno_off = a->a_offset; |
| 5141 | return 1; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5142 | } |
| 5143 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 5144 | /* assemble_emit() |
| 5145 | Extend the bytecode with a new instruction. |
| 5146 | Update lnotab if necessary. |
Jeremy Hylton | 376e63d | 2003-08-28 14:42:14 +0000 | [diff] [blame] | 5147 | */ |
| 5148 | |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 5149 | static int |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 5150 | assemble_emit(struct assembler *a, struct instr *i) |
Guido van Rossum | 4ca6c9d | 1994-08-29 12:16:12 +0000 | [diff] [blame] | 5151 | { |
Serhiy Storchaka | b0f80b0 | 2016-05-24 09:15:14 +0300 | [diff] [blame] | 5152 | int size, arg = 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5153 | Py_ssize_t len = PyBytes_GET_SIZE(a->a_bytecode); |
Serhiy Storchaka | ab87400 | 2016-09-11 13:48:15 +0300 | [diff] [blame] | 5154 | _Py_CODEUNIT *code; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 5155 | |
Serhiy Storchaka | b0f80b0 | 2016-05-24 09:15:14 +0300 | [diff] [blame] | 5156 | arg = i->i_oparg; |
| 5157 | size = instrsize(arg); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5158 | if (i->i_lineno && !assemble_lnotab(a, i)) |
| 5159 | return 0; |
Serhiy Storchaka | ab87400 | 2016-09-11 13:48:15 +0300 | [diff] [blame] | 5160 | if (a->a_offset + size >= len / (int)sizeof(_Py_CODEUNIT)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5161 | if (len > PY_SSIZE_T_MAX / 2) |
| 5162 | return 0; |
| 5163 | if (_PyBytes_Resize(&a->a_bytecode, len * 2) < 0) |
| 5164 | return 0; |
| 5165 | } |
Serhiy Storchaka | ab87400 | 2016-09-11 13:48:15 +0300 | [diff] [blame] | 5166 | code = (_Py_CODEUNIT *)PyBytes_AS_STRING(a->a_bytecode) + a->a_offset; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5167 | a->a_offset += size; |
Serhiy Storchaka | ab87400 | 2016-09-11 13:48:15 +0300 | [diff] [blame] | 5168 | write_op_arg(code, i->i_opcode, arg, size); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5169 | return 1; |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 5170 | } |
| 5171 | |
Neal Norwitz | 7d37f2f | 2005-10-23 22:40:47 +0000 | [diff] [blame] | 5172 | static void |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 5173 | assemble_jump_offsets(struct assembler *a, struct compiler *c) |
Anthony Baxter | c2a5a63 | 2004-08-02 06:10:11 +0000 | [diff] [blame] | 5174 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5175 | basicblock *b; |
Serhiy Storchaka | b0f80b0 | 2016-05-24 09:15:14 +0300 | [diff] [blame] | 5176 | int bsize, totsize, extended_arg_recompile; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5177 | int i; |
Guido van Rossum | c5e9629 | 1991-12-10 13:53:51 +0000 | [diff] [blame] | 5178 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5179 | /* Compute the size of each block and fixup jump args. |
| 5180 | Replace block pointer with position in bytecode. */ |
| 5181 | do { |
| 5182 | totsize = 0; |
| 5183 | for (i = a->a_nblocks - 1; i >= 0; i--) { |
| 5184 | b = a->a_postorder[i]; |
| 5185 | bsize = blocksize(b); |
| 5186 | b->b_offset = totsize; |
| 5187 | totsize += bsize; |
| 5188 | } |
Serhiy Storchaka | b0f80b0 | 2016-05-24 09:15:14 +0300 | [diff] [blame] | 5189 | extended_arg_recompile = 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5190 | for (b = c->u->u_blocks; b != NULL; b = b->b_list) { |
| 5191 | bsize = b->b_offset; |
| 5192 | for (i = 0; i < b->b_iused; i++) { |
| 5193 | struct instr *instr = &b->b_instr[i]; |
Serhiy Storchaka | b0f80b0 | 2016-05-24 09:15:14 +0300 | [diff] [blame] | 5194 | int isize = instrsize(instr->i_oparg); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5195 | /* Relative jumps are computed relative to |
| 5196 | the instruction pointer after fetching |
| 5197 | the jump instruction. |
| 5198 | */ |
Serhiy Storchaka | b0f80b0 | 2016-05-24 09:15:14 +0300 | [diff] [blame] | 5199 | bsize += isize; |
| 5200 | if (instr->i_jabs || instr->i_jrel) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5201 | instr->i_oparg = instr->i_target->b_offset; |
Serhiy Storchaka | b0f80b0 | 2016-05-24 09:15:14 +0300 | [diff] [blame] | 5202 | if (instr->i_jrel) { |
| 5203 | instr->i_oparg -= bsize; |
| 5204 | } |
Serhiy Storchaka | ab87400 | 2016-09-11 13:48:15 +0300 | [diff] [blame] | 5205 | instr->i_oparg *= sizeof(_Py_CODEUNIT); |
Serhiy Storchaka | b0f80b0 | 2016-05-24 09:15:14 +0300 | [diff] [blame] | 5206 | if (instrsize(instr->i_oparg) != isize) { |
| 5207 | extended_arg_recompile = 1; |
| 5208 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5209 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5210 | } |
| 5211 | } |
Neal Norwitz | f1d5068 | 2005-10-23 23:00:41 +0000 | [diff] [blame] | 5212 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5213 | /* XXX: This is an awful hack that could hurt performance, but |
| 5214 | on the bright side it should work until we come up |
| 5215 | with a better solution. |
Neal Norwitz | f1d5068 | 2005-10-23 23:00:41 +0000 | [diff] [blame] | 5216 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5217 | The issue is that in the first loop blocksize() is called |
| 5218 | which calls instrsize() which requires i_oparg be set |
Serhiy Storchaka | b0f80b0 | 2016-05-24 09:15:14 +0300 | [diff] [blame] | 5219 | appropriately. There is a bootstrap problem because |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5220 | i_oparg is calculated in the second loop above. |
Neal Norwitz | f1d5068 | 2005-10-23 23:00:41 +0000 | [diff] [blame] | 5221 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5222 | So we loop until we stop seeing new EXTENDED_ARGs. |
| 5223 | The only EXTENDED_ARGs that could be popping up are |
| 5224 | ones in jump instructions. So this should converge |
| 5225 | fairly quickly. |
| 5226 | */ |
Serhiy Storchaka | b0f80b0 | 2016-05-24 09:15:14 +0300 | [diff] [blame] | 5227 | } while (extended_arg_recompile); |
Guido van Rossum | 10dc2e8 | 1990-11-18 17:27:39 +0000 | [diff] [blame] | 5228 | } |
| 5229 | |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5230 | static PyObject * |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 5231 | dict_keys_inorder(PyObject *dict, Py_ssize_t offset) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5232 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5233 | PyObject *tuple, *k, *v; |
Serhiy Storchaka | 5ab81d7 | 2016-12-16 16:18:57 +0200 | [diff] [blame] | 5234 | Py_ssize_t i, pos = 0, size = PyDict_GET_SIZE(dict); |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5235 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5236 | tuple = PyTuple_New(size); |
| 5237 | if (tuple == NULL) |
| 5238 | return NULL; |
| 5239 | while (PyDict_Next(dict, &pos, &k, &v)) { |
| 5240 | i = PyLong_AS_LONG(v); |
Victor Stinner | efb2413 | 2016-01-22 12:33:12 +0100 | [diff] [blame] | 5241 | /* The keys of the dictionary are tuples. (see compiler_add_o |
| 5242 | * and _PyCode_ConstantKey). The object we want is always second, |
| 5243 | * though. */ |
| 5244 | k = PyTuple_GET_ITEM(k, 1); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5245 | Py_INCREF(k); |
| 5246 | assert((i - offset) < size); |
| 5247 | assert((i - offset) >= 0); |
| 5248 | PyTuple_SET_ITEM(tuple, i - offset, k); |
| 5249 | } |
| 5250 | return tuple; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5251 | } |
| 5252 | |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5253 | static int |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 5254 | compute_code_flags(struct compiler *c) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5255 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5256 | PySTEntryObject *ste = c->u->u_ste; |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 5257 | int flags = 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5258 | if (ste->ste_type == FunctionBlock) { |
Benjamin Peterson | 1dfd247 | 2015-04-27 21:44:22 -0400 | [diff] [blame] | 5259 | flags |= CO_NEWLOCALS | CO_OPTIMIZED; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5260 | if (ste->ste_nested) |
| 5261 | flags |= CO_NESTED; |
Yury Selivanov | eb63645 | 2016-09-08 22:01:51 -0700 | [diff] [blame] | 5262 | if (ste->ste_generator && !ste->ste_coroutine) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5263 | flags |= CO_GENERATOR; |
Yury Selivanov | eb63645 | 2016-09-08 22:01:51 -0700 | [diff] [blame] | 5264 | if (!ste->ste_generator && ste->ste_coroutine) |
| 5265 | flags |= CO_COROUTINE; |
| 5266 | if (ste->ste_generator && ste->ste_coroutine) |
| 5267 | flags |= CO_ASYNC_GENERATOR; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5268 | if (ste->ste_varargs) |
| 5269 | flags |= CO_VARARGS; |
| 5270 | if (ste->ste_varkeywords) |
| 5271 | flags |= CO_VARKEYWORDS; |
| 5272 | } |
Thomas Wouters | 5e9f1fa | 2006-02-28 20:02:27 +0000 | [diff] [blame] | 5273 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5274 | /* (Only) inherit compilerflags in PyCF_MASK */ |
| 5275 | flags |= (c->c_flags->cf_flags & PyCF_MASK); |
Thomas Wouters | 5e9f1fa | 2006-02-28 20:02:27 +0000 | [diff] [blame] | 5276 | |
Serhiy Storchaka | 5ab81d7 | 2016-12-16 16:18:57 +0200 | [diff] [blame] | 5277 | if (!PyDict_GET_SIZE(c->u->u_freevars) && |
| 5278 | !PyDict_GET_SIZE(c->u->u_cellvars)) { |
| 5279 | flags |= CO_NOFREE; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5280 | } |
Jeremy Hylton | d7f393e | 2001-02-12 16:01:03 +0000 | [diff] [blame] | 5281 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5282 | return flags; |
Jeremy Hylton | 29906ee | 2001-02-27 04:23:34 +0000 | [diff] [blame] | 5283 | } |
| 5284 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 5285 | static PyCodeObject * |
| 5286 | makecode(struct compiler *c, struct assembler *a) |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5287 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5288 | PyObject *tmp; |
| 5289 | PyCodeObject *co = NULL; |
| 5290 | PyObject *consts = NULL; |
| 5291 | PyObject *names = NULL; |
| 5292 | PyObject *varnames = NULL; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5293 | PyObject *name = NULL; |
| 5294 | PyObject *freevars = NULL; |
| 5295 | PyObject *cellvars = NULL; |
| 5296 | PyObject *bytecode = NULL; |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 5297 | Py_ssize_t nlocals; |
| 5298 | int nlocals_int; |
| 5299 | int flags; |
Victor Stinner | f8e3221 | 2013-11-19 23:56:34 +0100 | [diff] [blame] | 5300 | int argcount, kwonlyargcount; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5301 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5302 | tmp = dict_keys_inorder(c->u->u_consts, 0); |
| 5303 | if (!tmp) |
| 5304 | goto error; |
| 5305 | consts = PySequence_List(tmp); /* optimize_code requires a list */ |
| 5306 | Py_DECREF(tmp); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 5307 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5308 | names = dict_keys_inorder(c->u->u_names, 0); |
| 5309 | varnames = dict_keys_inorder(c->u->u_varnames, 0); |
| 5310 | if (!consts || !names || !varnames) |
| 5311 | goto error; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 5312 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5313 | cellvars = dict_keys_inorder(c->u->u_cellvars, 0); |
| 5314 | if (!cellvars) |
| 5315 | goto error; |
| 5316 | freevars = dict_keys_inorder(c->u->u_freevars, PyTuple_Size(cellvars)); |
| 5317 | if (!freevars) |
| 5318 | goto error; |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 5319 | |
Serhiy Storchaka | 5ab81d7 | 2016-12-16 16:18:57 +0200 | [diff] [blame] | 5320 | nlocals = PyDict_GET_SIZE(c->u->u_varnames); |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 5321 | assert(nlocals < INT_MAX); |
| 5322 | nlocals_int = Py_SAFE_DOWNCAST(nlocals, Py_ssize_t, int); |
| 5323 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5324 | flags = compute_code_flags(c); |
| 5325 | if (flags < 0) |
| 5326 | goto error; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 5327 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5328 | bytecode = PyCode_Optimize(a->a_bytecode, consts, names, a->a_lnotab); |
| 5329 | if (!bytecode) |
| 5330 | goto error; |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 5331 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5332 | tmp = PyList_AsTuple(consts); /* PyCode_New requires a tuple */ |
| 5333 | if (!tmp) |
| 5334 | goto error; |
| 5335 | Py_DECREF(consts); |
| 5336 | consts = tmp; |
| 5337 | |
Victor Stinner | f8e3221 | 2013-11-19 23:56:34 +0100 | [diff] [blame] | 5338 | argcount = Py_SAFE_DOWNCAST(c->u->u_argcount, Py_ssize_t, int); |
| 5339 | kwonlyargcount = Py_SAFE_DOWNCAST(c->u->u_kwonlyargcount, Py_ssize_t, int); |
| 5340 | co = PyCode_New(argcount, kwonlyargcount, |
Victor Stinner | ad9a066 | 2013-11-19 22:23:20 +0100 | [diff] [blame] | 5341 | nlocals_int, stackdepth(c), flags, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5342 | bytecode, consts, names, varnames, |
| 5343 | freevars, cellvars, |
Victor Stinner | 14e461d | 2013-08-26 22:28:21 +0200 | [diff] [blame] | 5344 | c->c_filename, c->u->u_name, |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5345 | c->u->u_firstlineno, |
| 5346 | a->a_lnotab); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 5347 | error: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5348 | Py_XDECREF(consts); |
| 5349 | Py_XDECREF(names); |
| 5350 | Py_XDECREF(varnames); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5351 | Py_XDECREF(name); |
| 5352 | Py_XDECREF(freevars); |
| 5353 | Py_XDECREF(cellvars); |
| 5354 | Py_XDECREF(bytecode); |
| 5355 | return co; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5356 | } |
| 5357 | |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 5358 | |
| 5359 | /* For debugging purposes only */ |
| 5360 | #if 0 |
| 5361 | static void |
| 5362 | dump_instr(const struct instr *i) |
| 5363 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5364 | const char *jrel = i->i_jrel ? "jrel " : ""; |
| 5365 | const char *jabs = i->i_jabs ? "jabs " : ""; |
| 5366 | char arg[128]; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 5367 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5368 | *arg = '\0'; |
Serhiy Storchaka | b0f80b0 | 2016-05-24 09:15:14 +0300 | [diff] [blame] | 5369 | if (HAS_ARG(i->i_opcode)) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5370 | sprintf(arg, "arg: %d ", i->i_oparg); |
Serhiy Storchaka | b0f80b0 | 2016-05-24 09:15:14 +0300 | [diff] [blame] | 5371 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5372 | fprintf(stderr, "line: %d, opcode: %d %s%s%s\n", |
| 5373 | i->i_lineno, i->i_opcode, arg, jabs, jrel); |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 5374 | } |
| 5375 | |
| 5376 | static void |
| 5377 | dump_basicblock(const basicblock *b) |
| 5378 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5379 | const char *seen = b->b_seen ? "seen " : ""; |
| 5380 | const char *b_return = b->b_return ? "return " : ""; |
| 5381 | fprintf(stderr, "used: %d, depth: %d, offset: %d %s%s\n", |
| 5382 | b->b_iused, b->b_startdepth, b->b_offset, seen, b_return); |
| 5383 | if (b->b_instr) { |
| 5384 | int i; |
| 5385 | for (i = 0; i < b->b_iused; i++) { |
| 5386 | fprintf(stderr, " [%02d] ", i); |
| 5387 | dump_instr(b->b_instr + i); |
| 5388 | } |
| 5389 | } |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 5390 | } |
| 5391 | #endif |
| 5392 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 5393 | static PyCodeObject * |
| 5394 | assemble(struct compiler *c, int addNone) |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5395 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5396 | basicblock *b, *entryblock; |
| 5397 | struct assembler a; |
| 5398 | int i, j, nblocks; |
| 5399 | PyCodeObject *co = NULL; |
Jeremy Hylton | 64949cb | 2001-01-25 20:06:59 +0000 | [diff] [blame] | 5400 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5401 | /* Make sure every block that falls off the end returns None. |
| 5402 | XXX NEXT_BLOCK() isn't quite right, because if the last |
| 5403 | block ends with a jump or return b_next shouldn't set. |
| 5404 | */ |
| 5405 | if (!c->u->u_curblock->b_return) { |
| 5406 | NEXT_BLOCK(c); |
| 5407 | if (addNone) |
| 5408 | ADDOP_O(c, LOAD_CONST, Py_None, consts); |
| 5409 | ADDOP(c, RETURN_VALUE); |
| 5410 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5411 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5412 | nblocks = 0; |
| 5413 | entryblock = NULL; |
| 5414 | for (b = c->u->u_blocks; b != NULL; b = b->b_list) { |
| 5415 | nblocks++; |
| 5416 | entryblock = b; |
| 5417 | } |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5418 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5419 | /* Set firstlineno if it wasn't explicitly set. */ |
| 5420 | if (!c->u->u_firstlineno) { |
Ned Deily | dc35cda | 2016-08-17 17:18:33 -0400 | [diff] [blame] | 5421 | if (entryblock && entryblock->b_instr && entryblock->b_instr->i_lineno) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5422 | c->u->u_firstlineno = entryblock->b_instr->i_lineno; |
| 5423 | else |
| 5424 | c->u->u_firstlineno = 1; |
| 5425 | } |
| 5426 | if (!assemble_init(&a, nblocks, c->u->u_firstlineno)) |
| 5427 | goto error; |
| 5428 | dfs(c, entryblock, &a); |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5429 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5430 | /* Can't modify the bytecode after computing jump offsets. */ |
| 5431 | assemble_jump_offsets(&a, c); |
Tim Peters | b6c3cea | 2001-06-26 03:36:28 +0000 | [diff] [blame] | 5432 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5433 | /* Emit code in reverse postorder from dfs. */ |
| 5434 | for (i = a.a_nblocks - 1; i >= 0; i--) { |
| 5435 | b = a.a_postorder[i]; |
| 5436 | for (j = 0; j < b->b_iused; j++) |
| 5437 | if (!assemble_emit(&a, &b->b_instr[j])) |
| 5438 | goto error; |
| 5439 | } |
Tim Peters | b6c3cea | 2001-06-26 03:36:28 +0000 | [diff] [blame] | 5440 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5441 | if (_PyBytes_Resize(&a.a_lnotab, a.a_lnotab_off) < 0) |
| 5442 | goto error; |
Serhiy Storchaka | ab87400 | 2016-09-11 13:48:15 +0300 | [diff] [blame] | 5443 | if (_PyBytes_Resize(&a.a_bytecode, a.a_offset * sizeof(_Py_CODEUNIT)) < 0) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5444 | goto error; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5445 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5446 | co = makecode(c, &a); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 5447 | error: |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 5448 | assemble_free(&a); |
| 5449 | return co; |
Jeremy Hylton | e36f778 | 2001-01-19 03:21:30 +0000 | [diff] [blame] | 5450 | } |
Georg Brandl | 8334fd9 | 2010-12-04 10:26:46 +0000 | [diff] [blame] | 5451 | |
| 5452 | #undef PyAST_Compile |
| 5453 | PyAPI_FUNC(PyCodeObject *) |
| 5454 | PyAST_Compile(mod_ty mod, const char *filename, PyCompilerFlags *flags, |
| 5455 | PyArena *arena) |
| 5456 | { |
| 5457 | return PyAST_CompileEx(mod, filename, flags, -1, arena); |
| 5458 | } |