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bpo-35134: Migrate frameobject.h contents to cpython/frameobject.h by ncoghlan · Pull Request #18052 · python/cpython · GitHub

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bpo-35134: Migrate frameobject.h contents to cpython/frameobject.h #18052

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Merged
ncoghlan merged 1 commit into from
Jan 20, 2020
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bpo-35134: Migrate frameobject.h contents to cpython/frameobject.h #18052

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87 changes: 87 additions & 0 deletions Include/cpython/frameobject.h
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Original file line number Diff line number Diff line change
@@ -0,0 +1,87 @@
/* Frame object interface */

#ifndef Py_CPYTHON_FRAMEOBJECT_H
# error "this header file must not be included directly"
#endif

#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 *);

/* 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
82 changes: 8 additions & 74 deletions Include/frameobject.h
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Original file line number Diff line number Diff line change
@@ -1,88 +1,22 @@
/* 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 *);

/* There are currently no frame related APIs in the stable ABI
* (they're all in the full CPython-specific API)
*/

/* 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 *);

/* 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 *);
#ifndef Py_LIMITED_API
# define Py_CPYTHON_FRAMEOBJECT_H
# include "cpython/frameobject.h"
# undef Py_CPYTHON_FRAMEOBJECT_H
#endif

#ifdef __cplusplus
}
#endif
#endif /* !Py_FRAMEOBJECT_H */
#endif /* Py_LIMITED_API */
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