mirror of
https://github.com/python/cpython.git
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fdd12f66bb
Replace individual slots in PyFutureFeatures with a single bitmask
with one field per feature. The flags for this bitmask are the same
as the flags used in the co_flags slot of a code object.
XXX This means we waste several bits, because they are used
for co_flags but have no meaning for future statements. Don't
think this is an issue.
Remove the NESTED_SCOPES_DEFAULT define and others. Not sure what
they were for anyway.
Remove all the PyCF_xxx flags, but define PyCF_MASK in terms of the
CO_xxx flags that are relevant for this release.
Change definition of PyCompilerFlags so that cf_flags matches
co_flags.
85 lines
2.9 KiB
C
85 lines
2.9 KiB
C
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/* Definitions for bytecode */
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#ifndef Py_COMPILE_H
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#define Py_COMPILE_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Bytecode object */
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typedef struct {
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PyObject_HEAD
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int co_argcount; /* #arguments, except *args */
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int co_nlocals; /* #local variables */
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int co_stacksize; /* #entries needed for evaluation stack */
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int co_flags; /* CO_..., see below */
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PyObject *co_code; /* instruction opcodes */
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PyObject *co_consts; /* list (constants used) */
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PyObject *co_names; /* list of strings (names used) */
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PyObject *co_varnames; /* tuple of strings (local variable names) */
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PyObject *co_freevars; /* tuple of strings (free variable names) */
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PyObject *co_cellvars; /* tuple of strings (cell variable names) */
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/* The rest doesn't count for hash/cmp */
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PyObject *co_filename; /* string (where it was loaded from) */
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PyObject *co_name; /* string (name, for reference) */
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int co_firstlineno; /* first source line number */
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PyObject *co_lnotab; /* string (encoding addr<->lineno mapping) */
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} PyCodeObject;
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/* Masks for co_flags above */
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#define CO_OPTIMIZED 0x0001
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#define CO_NEWLOCALS 0x0002
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#define CO_VARARGS 0x0004
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#define CO_VARKEYWORDS 0x0008
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#define CO_NESTED 0x0010
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#define CO_GENERATOR 0x0020
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/* XXX Temporary hack. Until generators are a permanent part of the
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language, we need a way for a code object to record that generators
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were *possible* when it was compiled. This is so code dynamically
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compiled *by* a code object knows whether to allow yield stmts. In
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effect, this passes on the "from __future__ import generators" state
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in effect when the code block was compiled. */
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#define CO_GENERATOR_ALLOWED 0x1000
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#define CO_FUTURE_DIVISION 0x2000
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extern DL_IMPORT(PyTypeObject) PyCode_Type;
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#define PyCode_Check(op) ((op)->ob_type == &PyCode_Type)
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#define CO_MAXBLOCKS 20 /* Max static block nesting within a function */
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/* Public interface */
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struct _node; /* Declare the existence of this type */
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DL_IMPORT(PyCodeObject *) PyNode_Compile(struct _node *, char *);
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DL_IMPORT(PyCodeObject *) PyCode_New(
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int, int, int, int, PyObject *, PyObject *, PyObject *, PyObject *,
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PyObject *, PyObject *, PyObject *, PyObject *, int, PyObject *);
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/* same as struct above */
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DL_IMPORT(int) PyCode_Addr2Line(PyCodeObject *, int);
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/* Future feature support */
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typedef struct {
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int ff_found_docstring;
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int ff_last_lineno;
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int ff_features;
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} PyFutureFeatures;
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DL_IMPORT(PyFutureFeatures *) PyNode_Future(struct _node *, char *);
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DL_IMPORT(PyCodeObject *) PyNode_CompileFlags(struct _node *, char *,
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PyCompilerFlags *);
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#define FUTURE_NESTED_SCOPES "nested_scopes"
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#define FUTURE_GENERATORS "generators"
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#define FUTURE_DIVISION "division"
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/* for internal use only */
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#define _PyCode_GETCODEPTR(co, pp) \
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((*(co)->co_code->ob_type->tp_as_buffer->bf_getreadbuffer) \
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((co)->co_code, 0, (void **)(pp)))
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#ifdef __cplusplus
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}
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#endif
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#endif /* !Py_COMPILE_H */
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