cpython/Include/code.h at 2.7 · python-emscripten/cpython · GitHub

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/* 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_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; /* string (where it was loaded from) */

PyObject *co_name; /* string (name, for reference) */

int co_firstlineno; /* first source line number */

PyObject *co_lnotab; /* string (encoding addr<->lineno mapping) See

Objects/lnotab_notes.txt for details. */

void *co_zombieframe; /* for optimization only (see frameobject.c) */

PyObject *co_weakreflist; /* to support weakrefs to code objects */

} 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

/* This is no longer used. Stopped defining in 2.5, do not re-use. */

#define CO_GENERATOR_ALLOWED 0x1000

#endif

#define CO_FUTURE_DIVISION 0x2000

#define CO_FUTURE_ABSOLUTE_IMPORT 0x4000 /* do absolute imports by default */

#define CO_FUTURE_WITH_STATEMENT 0x8000

#define CO_FUTURE_PRINT_FUNCTION 0x10000

#define CO_FUTURE_UNICODE_LITERALS 0x20000

/* This should be defined if a future statement modifies the syntax.

For example, when a keyword is added.

#if 1

#define PY_PARSER_REQUIRES_FUTURE_KEYWORD

#endif

#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, PyObject *, PyObject *, PyObject *, PyObject *,

PyObject *, PyObject *, PyObject *, PyObject *, int, PyObject *);

/* same as struct above */

/* Creates a new empty code object with the specified source location. */

PyAPI_FUNC(PyCodeObject *)

PyCode_NewEmpty(const char *filename, const char *funcname, int firstlineno);

/* Return the line number associated with the specified bytecode index

in this code object. If you just need the line number of a frame,

use PyFrame_GetLineNumber() instead. */

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;

/* Update *bounds to describe the first and one-past-the-last instructions in the

same line as lasti. Return the number of that line.

PyAPI_FUNC(int) _PyCode_CheckLineNumber(PyCodeObject* co,

int lasti, PyAddrPair *bounds);

/* Create a comparable key used to compare constants taking in account the

* object type. It is used to make sure types are not coerced (e.g., float and

* complex) _and_ to distinguish 0.0 from -0.0 e.g. on IEEE platforms

* Return (type(obj), obj, ...): a tuple with variable size (at least 2 items)

* depending on the type and the value. The type is the first item to not

* compare bytes and unicode which can raise a BytesWarning exception. */

PyAPI_FUNC(PyObject*) _PyCode_ConstantKey(PyObject *obj);

PyAPI_FUNC(PyObject*) PyCode_Optimize(PyObject *code, PyObject* consts,

PyObject *names, PyObject *lineno_obj);

#ifdef __cplusplus

}

#endif

#endif /* !Py_CODE_H */

cpython/Include/code.h at 2.7 · python-emscripten/cpython · GitHub

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