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comparison CSP2/CSP2_env/env-d9b9114564458d9d-741b3de822f2aaca6c6caa4325c4afce/include/python3.8/symtable.h @ 69:33d812a61356

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planemo upload commit 2e9511a184a1ca667c7be0c6321a36dc4e3d116d
author jpayne
date Tue, 18 Mar 2025 17:55:14 -0400
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67:0e9998148a16 69:33d812a61356
1 #ifndef Py_LIMITED_API
2 #ifndef Py_SYMTABLE_H
3 #define Py_SYMTABLE_H
4 #ifdef __cplusplus
5 extern "C" {
6 #endif
7
8 #include "Python-ast.h" /* mod_ty */
9
10 /* XXX(ncoghlan): This is a weird mix of public names and interpreter internal
11 * names.
12 */
13
14 typedef enum _block_type { FunctionBlock, ClassBlock, ModuleBlock }
15 _Py_block_ty;
16
17 struct _symtable_entry;
18
19 struct symtable {
20 PyObject *st_filename; /* name of file being compiled,
21 decoded from the filesystem encoding */
22 struct _symtable_entry *st_cur; /* current symbol table entry */
23 struct _symtable_entry *st_top; /* symbol table entry for module */
24 PyObject *st_blocks; /* dict: map AST node addresses
25 * to symbol table entries */
26 PyObject *st_stack; /* list: stack of namespace info */
27 PyObject *st_global; /* borrowed ref to st_top->ste_symbols */
28 int st_nblocks; /* number of blocks used. kept for
29 consistency with the corresponding
30 compiler structure */
31 PyObject *st_private; /* name of current class or NULL */
32 PyFutureFeatures *st_future; /* module's future features that affect
33 the symbol table */
34 int recursion_depth; /* current recursion depth */
35 int recursion_limit; /* recursion limit */
36 };
37
38 typedef struct _symtable_entry {
39 PyObject_HEAD
40 PyObject *ste_id; /* int: key in ste_table->st_blocks */
41 PyObject *ste_symbols; /* dict: variable names to flags */
42 PyObject *ste_name; /* string: name of current block */
43 PyObject *ste_varnames; /* list of function parameters */
44 PyObject *ste_children; /* list of child blocks */
45 PyObject *ste_directives;/* locations of global and nonlocal statements */
46 _Py_block_ty ste_type; /* module, class, or function */
47 int ste_nested; /* true if block is nested */
48 unsigned ste_free : 1; /* true if block has free variables */
49 unsigned ste_child_free : 1; /* true if a child block has free vars,
50 including free refs to globals */
51 unsigned ste_generator : 1; /* true if namespace is a generator */
52 unsigned ste_coroutine : 1; /* true if namespace is a coroutine */
53 unsigned ste_comprehension : 1; /* true if namespace is a list comprehension */
54 unsigned ste_varargs : 1; /* true if block has varargs */
55 unsigned ste_varkeywords : 1; /* true if block has varkeywords */
56 unsigned ste_returns_value : 1; /* true if namespace uses return with
57 an argument */
58 unsigned ste_needs_class_closure : 1; /* for class scopes, true if a
59 closure over __class__
60 should be created */
61 unsigned ste_comp_iter_target : 1; /* true if visiting comprehension target */
62 int ste_comp_iter_expr; /* non-zero if visiting a comprehension range expression */
63 int ste_lineno; /* first line of block */
64 int ste_col_offset; /* offset of first line of block */
65 int ste_opt_lineno; /* lineno of last exec or import * */
66 int ste_opt_col_offset; /* offset of last exec or import * */
67 struct symtable *ste_table;
68 } PySTEntryObject;
69
70 PyAPI_DATA(PyTypeObject) PySTEntry_Type;
71
72 #define PySTEntry_Check(op) (Py_TYPE(op) == &PySTEntry_Type)
73
74 PyAPI_FUNC(int) PyST_GetScope(PySTEntryObject *, PyObject *);
75
76 PyAPI_FUNC(struct symtable *) PySymtable_Build(
77 mod_ty mod,
78 const char *filename, /* decoded from the filesystem encoding */
79 PyFutureFeatures *future);
80 PyAPI_FUNC(struct symtable *) PySymtable_BuildObject(
81 mod_ty mod,
82 PyObject *filename,
83 PyFutureFeatures *future);
84 PyAPI_FUNC(PySTEntryObject *) PySymtable_Lookup(struct symtable *, void *);
85
86 PyAPI_FUNC(void) PySymtable_Free(struct symtable *);
87
88 /* Flags for def-use information */
89
90 #define DEF_GLOBAL 1 /* global stmt */
91 #define DEF_LOCAL 2 /* assignment in code block */
92 #define DEF_PARAM 2<<1 /* formal parameter */
93 #define DEF_NONLOCAL 2<<2 /* nonlocal stmt */
94 #define USE 2<<3 /* name is used */
95 #define DEF_FREE 2<<4 /* name used but not defined in nested block */
96 #define DEF_FREE_CLASS 2<<5 /* free variable from class's method */
97 #define DEF_IMPORT 2<<6 /* assignment occurred via import */
98 #define DEF_ANNOT 2<<7 /* this name is annotated */
99 #define DEF_COMP_ITER 2<<8 /* this name is a comprehension iteration variable */
100
101 #define DEF_BOUND (DEF_LOCAL | DEF_PARAM | DEF_IMPORT)
102
103 /* GLOBAL_EXPLICIT and GLOBAL_IMPLICIT are used internally by the symbol
104 table. GLOBAL is returned from PyST_GetScope() for either of them.
105 It is stored in ste_symbols at bits 12-15.
106 */
107 #define SCOPE_OFFSET 11
108 #define SCOPE_MASK (DEF_GLOBAL | DEF_LOCAL | DEF_PARAM | DEF_NONLOCAL)
109
110 #define LOCAL 1
111 #define GLOBAL_EXPLICIT 2
112 #define GLOBAL_IMPLICIT 3
113 #define FREE 4
114 #define CELL 5
115
116 #define GENERATOR 1
117 #define GENERATOR_EXPRESSION 2
118
119 #ifdef __cplusplus
120 }
121 #endif
122 #endif /* !Py_SYMTABLE_H */
123 #endif /* !Py_LIMITED_API */