#ifndef Py_SYMTABLE_H | |
#define Py_SYMTABLE_H | |
#ifdef __cplusplus | |
extern "C" { | |
#endif | |
typedef enum _block_type { FunctionBlock, ClassBlock, ModuleBlock } | |
_Py_block_ty; | |
struct _symtable_entry; | |
struct symtable { | |
const char *st_filename; /* name of file being compiled */ | |
struct _symtable_entry *st_cur; /* current symbol table entry */ | |
struct _symtable_entry *st_top; /* module entry */ | |
PyObject *st_symbols; /* dictionary of symbol table entries */ | |
PyObject *st_stack; /* stack of namespace info */ | |
PyObject *st_global; /* borrowed ref to MODULE in st_symbols */ | |
int st_nblocks; /* number of blocks */ | |
PyObject *st_private; /* name of current class or NULL */ | |
PyFutureFeatures *st_future; /* module's future features */ | |
}; | |
typedef struct _symtable_entry { | |
PyObject_HEAD | |
PyObject *ste_id; /* int: key in st_symbols */ | |
PyObject *ste_symbols; /* dict: name to flags */ | |
PyObject *ste_name; /* string: name of block */ | |
PyObject *ste_varnames; /* list of variable names */ | |
PyObject *ste_children; /* list of child ids */ | |
_Py_block_ty ste_type; /* module, class, or function */ | |
int ste_unoptimized; /* false if namespace is optimized */ | |
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_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 */ | |
int ste_lineno; /* first line of block */ | |
int ste_opt_lineno; /* lineno of last exec or import * */ | |
int ste_tmpname; /* counter for listcomp temp vars */ | |
struct symtable *ste_table; | |
} PySTEntryObject; | |
PyAPI_DATA(PyTypeObject) PySTEntry_Type; | |
#define PySTEntry_Check(op) (Py_TYPE(op) == &PySTEntry_Type) | |
PyAPI_FUNC(int) PyST_GetScope(PySTEntryObject *, PyObject *); | |
PyAPI_FUNC(struct symtable *) PySymtable_Build(mod_ty, const char *, | |
PyFutureFeatures *); | |
PyAPI_FUNC(PySTEntryObject *) PySymtable_Lookup(struct symtable *, void *); | |
PyAPI_FUNC(void) PySymtable_Free(struct symtable *); | |
/* 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 USE 2<<2 /* name is used */ | |
#define DEF_FREE 2<<3 /* name used but not defined in nested block */ | |
#define DEF_FREE_CLASS 2<<4 /* free variable from class's method */ | |
#define DEF_IMPORT 2<<5 /* assignment occurred via import */ | |
#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 12-14. | |
*/ | |
#define SCOPE_OFF 11 | |
#define SCOPE_MASK 7 | |
#define LOCAL 1 | |
#define GLOBAL_EXPLICIT 2 | |
#define GLOBAL_IMPLICIT 3 | |
#define FREE 4 | |
#define CELL 5 | |
/* The following three names are used for the ste_unoptimized bit field */ | |
#define OPT_IMPORT_STAR 1 | |
#define OPT_EXEC 2 | |
#define OPT_BARE_EXEC 4 | |
#define OPT_TOPLEVEL 8 /* top-level names, including eval and exec */ | |
#define GENERATOR 1 | |
#define GENERATOR_EXPRESSION 2 | |
#ifdef __cplusplus | |
} | |
#endif | |
#endif /* !Py_SYMTABLE_H */ |