mirror of https://github.com/python/cpython
100 lines
3.4 KiB
C
100 lines
3.4 KiB
C
/* 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/cmp */
|
|
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
|
|
#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 */
|
|
#define _PyCode_GETCODEPTR(co, pp) \
|
|
((*Py_Type((co)->co_code)->tp_as_buffer->bf_getreadbuffer) \
|
|
((co)->co_code, 0, (void **)(pp)))
|
|
|
|
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 */
|