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Editing: code.h
#ifndef Py_CPYTHON_CODE_H # error "this header file must not be included directly" #endif typedef uint16_t _Py_CODEUNIT; #ifdef WORDS_BIGENDIAN # define _Py_OPCODE(word) ((word) >> 8) # define _Py_OPARG(word) ((word) & 255) #else # define _Py_OPCODE(word) ((word) & 255) # define _Py_OPARG(word) ((word) >> 8) #endif typedef struct _PyOpcache _PyOpcache; /* Bytecode object */ struct PyCodeObject { PyObject_HEAD int co_argcount; /* #arguments, except *args */ int co_posonlyargcount; /* #positional only arguments */ int co_kwonlyargcount; /* #keyword only arguments */ int co_nlocals; /* #local variables */ int co_stacksize; /* #entries needed for evaluation stack */ int co_flags; /* CO_..., see below */ int co_firstlineno; /* first source line number */ 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 aren't used in either hash or comparisons, except for co_name, used in both. This is done to preserve the name and line number for tracebacks and debuggers; otherwise, constant de-duplication would collapse identical functions/lambdas defined on different lines. */ Py_ssize_t *co_cell2arg; /* Maps cell vars which are arguments. */ PyObject *co_filename; /* unicode (where it was loaded from) */ PyObject *co_name; /* unicode (name, for reference) */ 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 */ /* Scratch space for extra data relating to the code object. Type is a void* to keep the format private in codeobject.c to force people to go through the proper APIs. */ void *co_extra; /* Per opcodes just-in-time cache * * To reduce cache size, we use indirect mapping from opcode index to * cache object: * cache = co_opcache[co_opcache_map[next_instr - first_instr] - 1] */ // co_opcache_map is indexed by (next_instr - first_instr). // * 0 means there is no cache for this opcode. // * n > 0 means there is cache in co_opcache[n-1]. unsigned char *co_opcache_map; _PyOpcache *co_opcache; int co_opcache_flag; // used to determine when create a cache. unsigned char co_opcache_size; // length of co_opcache. }; /* 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 /* The CO_COROUTINE flag is set for coroutine functions (defined with ``async def`` keywords) */ #define CO_COROUTINE 0x0080 #define CO_ITERABLE_COROUTINE 0x0100 #define CO_ASYNC_GENERATOR 0x0200 /* bpo-39562: These constant values are changed in Python 3.9 to prevent collision with compiler flags. CO_FUTURE_ and PyCF_ constants must be kept unique. PyCF_ constants can use bits from 0x0100 to 0x10000. CO_FUTURE_ constants use bits starting at 0x20000. */ #define CO_FUTURE_DIVISION 0x20000 #define CO_FUTURE_ABSOLUTE_IMPORT 0x40000 /* do absolute imports by default */ #define CO_FUTURE_WITH_STATEMENT 0x80000 #define CO_FUTURE_PRINT_FUNCTION 0x100000 #define CO_FUTURE_UNICODE_LITERALS 0x200000 #define CO_FUTURE_BARRY_AS_BDFL 0x400000 #define CO_FUTURE_GENERATOR_STOP 0x800000 #define CO_FUTURE_ANNOTATIONS 0x1000000 /* This value is found in the co_cell2arg array when the associated cell variable does not correspond to an argument. */ #define CO_CELL_NOT_AN_ARG (-1) /* This should be defined if a future statement modifies the syntax. For example, when a keyword is added. */ #define PY_PARSER_REQUIRES_FUTURE_KEYWORD #define CO_MAXBLOCKS 20 /* Max static block nesting within a function */ PyAPI_DATA(PyTypeObject) PyCode_Type; #define PyCode_Check(op) Py_IS_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, int, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *, int, PyObject *); PyAPI_FUNC(PyCodeObject *) PyCode_NewWithPosOnlyArgs( int, int, 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 */ 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 str 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 *lnotab); PyAPI_FUNC(int) _PyCode_GetExtra(PyObject *code, Py_ssize_t index, void **extra); PyAPI_FUNC(int) _PyCode_SetExtra(PyObject *code, Py_ssize_t index, void *extra);
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