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95 lines
3.1 KiB
95 lines
3.1 KiB
3 years ago
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/* Frame object interface */
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#ifndef Py_CPYTHON_FRAMEOBJECT_H
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# error "this header file must not be included directly"
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#endif
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/* These values are chosen so that the inline functions below all
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* compare f_state to zero.
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*/
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enum _framestate {
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FRAME_CREATED = -2,
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FRAME_SUSPENDED = -1,
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FRAME_EXECUTING = 0,
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FRAME_RETURNED = 1,
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FRAME_UNWINDING = 2,
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FRAME_RAISED = 3,
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FRAME_CLEARED = 4
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};
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typedef signed char PyFrameState;
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typedef struct {
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int b_type; /* what kind of block this is */
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int b_handler; /* where to jump to find handler */
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int b_level; /* value stack level to pop to */
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} PyTryBlock;
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struct _frame {
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PyObject_VAR_HEAD
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struct _frame *f_back; /* previous frame, or NULL */
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PyCodeObject *f_code; /* code segment */
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PyObject *f_builtins; /* builtin symbol table (PyDictObject) */
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PyObject *f_globals; /* global symbol table (PyDictObject) */
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PyObject *f_locals; /* local symbol table (any mapping) */
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PyObject **f_valuestack; /* points after the last local */
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PyObject *f_trace; /* Trace function */
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int f_stackdepth; /* Depth of value stack */
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char f_trace_lines; /* Emit per-line trace events? */
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char f_trace_opcodes; /* Emit per-opcode trace events? */
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/* Borrowed reference to a generator, or NULL */
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PyObject *f_gen;
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int f_lasti; /* Last instruction if called */
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int f_lineno; /* Current line number. Only valid if non-zero */
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int f_iblock; /* index in f_blockstack */
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PyFrameState f_state; /* What state the frame is in */
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PyTryBlock f_blockstack[CO_MAXBLOCKS]; /* for try and loop blocks */
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PyObject *f_localsplus[1]; /* locals+stack, dynamically sized */
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};
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static inline int _PyFrame_IsRunnable(struct _frame *f) {
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return f->f_state < FRAME_EXECUTING;
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}
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static inline int _PyFrame_IsExecuting(struct _frame *f) {
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return f->f_state == FRAME_EXECUTING;
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}
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static inline int _PyFrameHasCompleted(struct _frame *f) {
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return f->f_state > FRAME_EXECUTING;
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}
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/* Standard object interface */
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PyAPI_DATA(PyTypeObject) PyFrame_Type;
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#define PyFrame_Check(op) Py_IS_TYPE(op, &PyFrame_Type)
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PyAPI_FUNC(PyFrameObject *) PyFrame_New(PyThreadState *, PyCodeObject *,
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PyObject *, PyObject *);
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/* only internal use */
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PyFrameObject*
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_PyFrame_New_NoTrack(PyThreadState *, PyFrameConstructor *, PyObject *);
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/* The rest of the interface is specific for frame objects */
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/* Block management functions */
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PyAPI_FUNC(void) PyFrame_BlockSetup(PyFrameObject *, int, int, int);
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PyAPI_FUNC(PyTryBlock *) PyFrame_BlockPop(PyFrameObject *);
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/* Conversions between "fast locals" and locals in dictionary */
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PyAPI_FUNC(void) PyFrame_LocalsToFast(PyFrameObject *, int);
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PyAPI_FUNC(int) PyFrame_FastToLocalsWithError(PyFrameObject *f);
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PyAPI_FUNC(void) PyFrame_FastToLocals(PyFrameObject *);
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PyAPI_FUNC(void) _PyFrame_DebugMallocStats(FILE *out);
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PyAPI_FUNC(PyFrameObject *) PyFrame_GetBack(PyFrameObject *frame);
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