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frameobject.h
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C/C++ Source or Header
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2000-12-21
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4KB
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120 lines
#ifndef Py_FRAMEOBJECT_H
#define Py_FRAMEOBJECT_H
#ifdef __cplusplus
extern "C" {
#endif
/***********************************************************
Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
The Netherlands.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the names of Stichting Mathematisch
Centrum or CWI or Corporation for National Research Initiatives or
CNRI not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior
permission.
While CWI is the initial source for this software, a modified version
is made available by the Corporation for National Research Initiatives
(CNRI) at the Internet address ftp://ftp.python.org.
STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
******************************************************************/
/* Frame object interface */
typedef struct {
int b_type; /* what kind of block this is */
int b_handler; /* where to jump to find handler */
int b_level; /* value stack level to pop to */
} PyTryBlock;
typedef struct _frame {
PyObject_HEAD
struct _frame *f_back; /* previous frame, or NULL */
PyCodeObject *f_code; /* code segment */
PyObject *f_builtins; /* builtin symbol table (PyDictObject) */
PyObject *f_globals; /* global symbol table (PyDictObject) */
PyObject *f_locals; /* local symbol table (PyDictObject) */
PyObject **f_valuestack; /* points after the last local */
PyObject *f_trace; /* Trace function */
PyObject *f_exc_type, *f_exc_value, *f_exc_traceback;
PyThreadState *f_tstate;
int f_lasti; /* Last instruction if called */
int f_lineno; /* Current line number */
int f_restricted; /* Flag set if restricted operations
in this scope */
int f_iblock; /* index in f_blockstack */
PyTryBlock f_blockstack[CO_MAXBLOCKS]; /* for try and loop blocks */
int f_nlocals; /* number of locals */
int f_stacksize; /* size of value stack */
PyObject *f_localsplus[1]; /* locals+stack, dynamically sized */
} PyFrameObject;
/* Standard object interface */
extern DL_IMPORT(PyTypeObject) PyFrame_Type;
#define PyFrame_Check(op) ((op)->ob_type == &PyFrame_Type)
DL_IMPORT(PyFrameObject *) PyFrame_New
Py_PROTO((PyThreadState *, PyCodeObject *,
PyObject *, PyObject *)) SEG_FRAMEOBJECT_H;
/* The rest of the interface is specific for frame objects */
/* Tuple access macros */
#ifndef Py_DEBUG
#define GETITEM(v, i) PyTuple_GET_ITEM((PyTupleObject *)(v), (i))
#define GETITEMNAME(v, i) \
PyString_AS_STRING((PyStringObject *)GETITEM((v), (i)))
#else
#define GETITEM(v, i) PyTuple_GetItem((v), (i))
#define GETITEMNAME(v, i) PyString_AsString(GETITEM(v, i))
#endif
#define GETUSTRINGVALUE(s) ((unsigned char *)PyString_AS_STRING(s))
/* Code access macros */
#define Getconst(f, i) (GETITEM((f)->f_code->co_consts, (i)))
#define Getname(f, i) (GETITEMNAME((f)->f_code->co_names, (i)))
#define Getnamev(f, i) (GETITEM((f)->f_code->co_names, (i)))
/* Block management functions */
DL_IMPORT(void) PyFrame_BlockSetup Py_PROTO((PyFrameObject *, int, int, int)) SEG_FRAMEOBJECT_H;
DL_IMPORT(PyTryBlock *) PyFrame_BlockPop Py_PROTO((PyFrameObject *)) SEG_FRAMEOBJECT_H;
/* Extend the value stack */
DL_IMPORT(PyObject **) PyFrame_ExtendStack Py_PROTO((PyFrameObject *, int, int)) SEG_FRAMEOBJECT_H;
/* Conversions between "fast locals" and locals in dictionary */
DL_IMPORT(void) PyFrame_LocalsToFast Py_PROTO((PyFrameObject *, int)) SEG_FRAMEOBJECT_H;
DL_IMPORT(void) PyFrame_FastToLocals Py_PROTO((PyFrameObject *)) SEG_FRAMEOBJECT_H;
#ifdef __cplusplus
}
#endif
#endif /* !Py_FRAMEOBJECT_H */