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/* Frame object interface */

#ifndef Py_LIMITED_API

#ifndef Py_FRAMEOBJECT_H

#define Py_FRAMEOBJECT_H

#ifdef __cplusplus

extern "C" {

#endif

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_VAR_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 (any mapping) */

PyObject **f_valuestack; /* points after the last local */

/* Next free slot in f_valuestack. Frame creation sets to f_valuestack.

Frame evaluation usually NULLs it, but a frame that yields sets it

to the current stack top. */

PyObject **f_stacktop;

PyObject *f_trace; /* Trace function */

char f_trace_lines; /* Emit per-line trace events? */

char f_trace_opcodes; /* Emit per-opcode trace events? */

/* Borrowed reference to a generator, or NULL */

PyObject *f_gen;

int f_lasti; /* Last instruction if called */

/* Call PyFrame_GetLineNumber() instead of reading this field

directly. As of 2.3 f_lineno is only valid when tracing is

active (i.e. when f_trace is set). At other times we use

PyCode_Addr2Line to calculate the line from the current

bytecode index. */

int f_lineno; /* Current line number */

int f_iblock; /* index in f_blockstack */

char f_executing; /* whether the frame is still executing */

PyTryBlock f_blockstack[CO_MAXBLOCKS]; /* for try and loop blocks */

PyObject *f_localsplus[1]; /* locals+stack, dynamically sized */

} PyFrameObject;

/* Standard object interface */

PyAPI_DATA(PyTypeObject) PyFrame_Type;

#define PyFrame_Check(op) (_Py_TYPE(op) == &PyFrame_Type)

PyAPI_FUNC(PyFrameObject *) PyFrame_New(PyThreadState *, PyCodeObject *,

PyObject *, PyObject *);

/* only internal use */

PyFrameObject* _PyFrame_New_NoTrack(PyThreadState *, PyCodeObject *,

PyObject *, PyObject *);

/* The rest of the interface is specific for frame objects */

/* Block management functions */

PyAPI_FUNC(void) PyFrame_BlockSetup(PyFrameObject *, int, int, int);

PyAPI_FUNC(PyTryBlock *) PyFrame_BlockPop(PyFrameObject *);

/* Extend the value stack */

PyAPI_FUNC(PyObject **) PyFrame_ExtendStack(PyFrameObject *, int, int);

/* Conversions between "fast locals" and locals in dictionary */

PyAPI_FUNC(void) PyFrame_LocalsToFast(PyFrameObject *, int);

PyAPI_FUNC(int) PyFrame_FastToLocalsWithError(PyFrameObject *f);

PyAPI_FUNC(void) PyFrame_FastToLocals(PyFrameObject *);

PyAPI_FUNC(int) PyFrame_ClearFreeList(void);

PyAPI_FUNC(void) _PyFrame_DebugMallocStats(FILE *out);

/* Return the line of code the frame is currently executing. */

PyAPI_FUNC(int) PyFrame_GetLineNumber(PyFrameObject *);

#ifdef __cplusplus

}

#endif

#endif /* !Py_FRAMEOBJECT_H */

#endif /* Py_LIMITED_API */

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