1 files changed, 158 insertions, 0 deletions
diff --git a/contrib/tools/python3/Include/internal/pycore_symtable.h b/contrib/tools/python3/Include/internal/pycore_symtable.h
new file mode 100644
index 0000000000..c8e0578a23
--- /dev/null
+++ b/contrib/tools/python3/Include/internal/pycore_symtable.h
@@ -0,0 +1,158 @@
+#ifndef Py_INTERNAL_SYMTABLE_H
+#define Py_INTERNAL_SYMTABLE_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef Py_BUILD_CORE
+#  error "this header requires Py_BUILD_CORE define"
+#endif
+
+struct _mod;   // Type defined in pycore_ast.h
+
+typedef enum _block_type {
+    FunctionBlock, ClassBlock, ModuleBlock,
+    // Used for annotations if 'from __future__ import annotations' is active.
+    // Annotation blocks cannot bind names and are not evaluated.
+    AnnotationBlock,
+    // Used for generics and type aliases. These work mostly like functions
+    // (see PEP 695 for details). The three different blocks function identically;
+    // they are different enum entries only so that error messages can be more
+    // precise.
+    TypeVarBoundBlock, TypeAliasBlock, TypeParamBlock
+} _Py_block_ty;
+
+typedef enum _comprehension_type {
+    NoComprehension = 0,
+    ListComprehension = 1,
+    DictComprehension = 2,
+    SetComprehension = 3,
+    GeneratorExpression = 4 } _Py_comprehension_ty;
+
+struct _symtable_entry;
+
+struct symtable {
+    PyObject *st_filename;          /* name of file being compiled,
+                                       decoded from the filesystem encoding */
+    struct _symtable_entry *st_cur; /* current symbol table entry */
+    struct _symtable_entry *st_top; /* symbol table entry for module */
+    PyObject *st_blocks;            /* dict: map AST node addresses
+                                     *       to symbol table entries */
+    PyObject *st_stack;             /* list: stack of namespace info */
+    PyObject *st_global;            /* borrowed ref to st_top->ste_symbols */
+    int st_nblocks;                 /* number of blocks used. kept for
+                                       consistency with the corresponding
+                                       compiler structure */
+    PyObject *st_private;           /* name of current class or NULL */
+    PyFutureFeatures *st_future;    /* module's future features that affect
+                                       the symbol table */
+    int recursion_depth;            /* current recursion depth */
+    int recursion_limit;            /* recursion limit */
+};
+
+typedef struct _symtable_entry {
+    PyObject_HEAD
+    PyObject *ste_id;        /* int: key in ste_table->st_blocks */
+    PyObject *ste_symbols;   /* dict: variable names to flags */
+    PyObject *ste_name;      /* string: name of current block */
+    PyObject *ste_varnames;  /* list of function parameters */
+    PyObject *ste_children;  /* list of child blocks */
+    PyObject *ste_directives;/* locations of global and nonlocal statements */
+    _Py_block_ty ste_type;
+    int ste_nested;      /* true if block is nested */
+    unsigned ste_free : 1;        /* true if block has free variables */
+    unsigned ste_child_free : 1;  /* true if a child block has free vars,
+                                     including free refs to globals */
+    unsigned ste_generator : 1;   /* true if namespace is a generator */
+    unsigned ste_coroutine : 1;   /* true if namespace is a coroutine */
+    _Py_comprehension_ty ste_comprehension;  /* Kind of comprehension (if any) */
+    unsigned ste_varargs : 1;     /* true if block has varargs */
+    unsigned ste_varkeywords : 1; /* true if block has varkeywords */
+    unsigned ste_returns_value : 1;  /* true if namespace uses return with
+                                        an argument */
+    unsigned ste_needs_class_closure : 1; /* for class scopes, true if a
+                                             closure over __class__
+                                             should be created */
+    unsigned ste_needs_classdict : 1; /* for class scopes, true if a closure
+                                         over the class dict should be created */
+    unsigned ste_comp_inlined : 1; /* true if this comprehension is inlined */
+    unsigned ste_comp_iter_target : 1; /* true if visiting comprehension target */
+    unsigned ste_can_see_class_scope : 1; /* true if this block can see names bound in an
+                                             enclosing class scope */
+    int ste_comp_iter_expr; /* non-zero if visiting a comprehension range expression */
+    int ste_lineno;          /* first line of block */
+    int ste_col_offset;      /* offset of first line of block */
+    int ste_end_lineno;      /* end line of block */
+    int ste_end_col_offset;  /* end offset of first line of block */
+    int ste_opt_lineno;      /* lineno of last exec or import * */
+    int ste_opt_col_offset;  /* offset of last exec or import * */
+    struct symtable *ste_table;
+} PySTEntryObject;
+
+extern PyTypeObject PySTEntry_Type;
+
+#define PySTEntry_Check(op) Py_IS_TYPE((op), &PySTEntry_Type)
+
+extern long _PyST_GetSymbol(PySTEntryObject *, PyObject *);
+extern int _PyST_GetScope(PySTEntryObject *, PyObject *);
+extern int _PyST_IsFunctionLike(PySTEntryObject *);
+
+extern struct symtable* _PySymtable_Build(
+    struct _mod *mod,
+    PyObject *filename,
+    PyFutureFeatures *future);
+PyAPI_FUNC(PySTEntryObject *) PySymtable_Lookup(struct symtable *, void *);
+
+extern void _PySymtable_Free(struct symtable *);
+
+extern PyObject* _Py_Mangle(PyObject *p, PyObject *name);
+
+/* Flags for def-use information */
+
+#define DEF_GLOBAL 1           /* global stmt */
+#define DEF_LOCAL 2            /* assignment in code block */
+#define DEF_PARAM 2<<1         /* formal parameter */
+#define DEF_NONLOCAL 2<<2      /* nonlocal stmt */
+#define USE 2<<3               /* name is used */
+#define DEF_FREE 2<<4          /* name used but not defined in nested block */
+#define DEF_FREE_CLASS 2<<5    /* free variable from class's method */
+#define DEF_IMPORT 2<<6        /* assignment occurred via import */
+#define DEF_ANNOT 2<<7         /* this name is annotated */
+#define DEF_COMP_ITER 2<<8     /* this name is a comprehension iteration variable */
+#define DEF_TYPE_PARAM 2<<9    /* this name is a type parameter */
+#define DEF_COMP_CELL 2<<10    /* this name is a cell in an inlined comprehension */
+
+#define DEF_BOUND (DEF_LOCAL | DEF_PARAM | DEF_IMPORT)
+
+/* GLOBAL_EXPLICIT and GLOBAL_IMPLICIT are used internally by the symbol
+   table.  GLOBAL is returned from PyST_GetScope() for either of them.
+   It is stored in ste_symbols at bits 13-16.
+*/
+#define SCOPE_OFFSET 12
+#define SCOPE_MASK (DEF_GLOBAL | DEF_LOCAL | DEF_PARAM | DEF_NONLOCAL)
+
+#define LOCAL 1
+#define GLOBAL_EXPLICIT 2
+#define GLOBAL_IMPLICIT 3
+#define FREE 4
+#define CELL 5
+
+#define GENERATOR 1
+#define GENERATOR_EXPRESSION 2
+
+// Used by symtablemodule.c
+extern struct symtable* _Py_SymtableStringObjectFlags(
+    const char *str,
+    PyObject *filename,
+    int start,
+    PyCompilerFlags *flags);
+
+int _PyFuture_FromAST(
+    struct _mod * mod,
+    PyObject *filename,
+    PyFutureFeatures* futures);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* !Py_INTERNAL_SYMTABLE_H */