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code.h
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97 lines (82 loc) · 3.34 KB
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/* Definitions for bytecode */
#ifndef Py_CODE_H
#define Py_CODE_H
#ifdef __cplusplus
extern "C" {
#endif
/* Bytecode object */
typedef struct {
PyObject_HEAD
int co_argcount; /* #arguments, except *args */
int co_kwonlyargcount; /* #keyword only arguments */
int co_nlocals; /* #local variables */
int co_stacksize; /* #entries needed for evaluation stack */
int co_flags; /* CO_..., see below */
PyObject *co_code; /* instruction opcodes */
PyObject *co_consts; /* list (constants used) */
PyObject *co_names; /* list of strings (names used) */
PyObject *co_varnames; /* tuple of strings (local variable names) */
PyObject *co_freevars; /* tuple of strings (free variable names) */
PyObject *co_cellvars; /* tuple of strings (cell variable names) */
/* The rest doesn't count for hash or comparisons */
PyObject *co_filename; /* unicode (where it was loaded from) */
PyObject *co_name; /* unicode (name, for reference) */
int co_firstlineno; /* first source line number */
PyObject *co_lnotab; /* string (encoding addr<->lineno mapping) */
void *co_zombieframe; /* for optimization only (see frameobject.c) */
} PyCodeObject;
/* Masks for co_flags above */
#define CO_OPTIMIZED 0x0001
#define CO_NEWLOCALS 0x0002
#define CO_VARARGS 0x0004
#define CO_VARKEYWORDS 0x0008
#define CO_NESTED 0x0010
#define CO_GENERATOR 0x0020
/* The CO_NOFREE flag is set if there are no free or cell variables.
This information is redundant, but it allows a single flag test
to determine whether there is any extra work to be done when the
call frame it setup.
*/
#define CO_NOFREE 0x0040
#if 0
/* These are no longer used. */
#define CO_GENERATOR_ALLOWED 0x1000
#define CO_FUTURE_DIVISION 0x2000
#define CO_FUTURE_ABSOLUTE_IMPORT 0x4000 /* do absolute imports by default */
#define CO_FUTURE_WITH_STATEMENT 0x8000
#define CO_FUTURE_PRINT_FUNCTION 0x10000
#define CO_FUTURE_UNICODE_LITERALS 0x20000
#endif
/* This should be defined if a future statement modifies the syntax.
For example, when a keyword is added.
*/
/* #define PY_PARSER_REQUIRES_FUTURE_KEYWORD */
#define CO_MAXBLOCKS 20 /* Max static block nesting within a function */
PyAPI_DATA(PyTypeObject) PyCode_Type;
#define PyCode_Check(op) (Py_TYPE(op) == &PyCode_Type)
#define PyCode_GetNumFree(op) (PyTuple_GET_SIZE((op)->co_freevars))
/* Public interface */
PyAPI_FUNC(PyCodeObject *) PyCode_New(
int, int, int, int, int, PyObject *, PyObject *,
PyObject *, PyObject *, PyObject *, PyObject *,
PyObject *, PyObject *, int, PyObject *);
/* same as struct above */
PyAPI_FUNC(int) PyCode_Addr2Line(PyCodeObject *, int);
/* for internal use only */
typedef struct _addr_pair {
int ap_lower;
int ap_upper;
} PyAddrPair;
/* Check whether lasti (an instruction offset) falls outside bounds
and whether it is a line number that should be traced. Returns
a line number if it should be traced or -1 if the line should not.
If lasti is not within bounds, updates bounds.
*/
PyAPI_FUNC(int) PyCode_CheckLineNumber(PyCodeObject* co,
int lasti, PyAddrPair *bounds);
PyAPI_FUNC(PyObject*) PyCode_Optimize(PyObject *code, PyObject* consts,
PyObject *names, PyObject *lineno_obj);
#ifdef __cplusplus
}
#endif
#endif /* !Py_CODE_H */