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/* Definitions for bytecode */ #ifndef Py_LIMITED_API #ifndef Py_CODE_H #define Py_CODE_H #ifdef __cplusplus extern "C" { #endif /* Each instruction in a code object is a fixed-width value, * currently 2 bytes: 1-byte opcode + 1-byte oparg. The EXTENDED_ARG * opcode allows for larger values but the current limit is 3 uses * of EXTENDED_ARG (see Python/compile.c), for a maximum * 32-bit value. This aligns with the note in Python/compile.c * (compiler_addop_i_line) indicating that the max oparg value is * 2**32 - 1, rather than INT_MAX. */ typedef uint16_t _Py_CODEUNIT; #ifdef WORDS_BIGENDIAN # define _Py_OPCODE(word) ((word) >> 8) # define _Py_OPARG(word) ((word) & 255) # define _Py_MAKECODEUNIT(opcode, oparg) (((opcode)<<8)|(oparg)) #else # define _Py_OPCODE(word) ((word) & 255) # define _Py_OPARG(word) ((word) >> 8) # define _Py_MAKECODEUNIT(opcode, oparg) ((opcode)|((oparg)<<8)) #endif // Use "unsigned char" instead of "uint8_t" here to avoid illegal aliasing: #define _Py_SET_OPCODE(word, opcode) (((unsigned char *)&(word))[0] = (opcode)) // To avoid repeating ourselves in deepfreeze.py, all PyCodeObject members are // defined in this macro: #define _PyCode_DEF(SIZE) { \ PyObject_VAR_HEAD \ \ /* Note only the following fields are used in hash and/or comparisons \ * \ * - co_name \ * - co_argcount \ * - co_posonlyargcount \ * - co_kwonlyargcount \ * - co_nlocals \ * - co_stacksize \ * - co_flags \ * - co_firstlineno \ * - co_consts \ * - co_names \ * - co_localsplusnames \ * 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. \ */ \ \ /* These fields are set with provided values on new code objects. */ \ \ /* The hottest fields (in the eval loop) are grouped here at the top. */ \ PyObject *co_consts; /* list (constants used) */ \ PyObject *co_names; /* list of strings (names used) */ \ PyObject *co_exceptiontable; /* Byte string encoding exception handling \ table */ \ int co_flags; /* CO_..., see below */ \ short co_warmup; /* Warmup counter for quickening */ \ short _co_linearray_entry_size; /* Size of each entry in _co_linearray */ \ \ /* The rest are not so impactful on performance. */ \ int co_argcount; /* #arguments, except *args */ \ int co_posonlyargcount; /* #positional only arguments */ \ int co_kwonlyargcount; /* #keyword only arguments */ \ int co_stacksize; /* #entries needed for evaluation stack */ \ int co_firstlineno; /* first source line number */ \ \ /* redundant values (derived from co_localsplusnames and \ co_localspluskinds) */ \ int co_nlocalsplus; /* number of local + cell + free variables \ */ \ int co_nlocals; /* number of local variables */ \ int co_nplaincellvars; /* number of non-arg cell variables */ \ int co_ncellvars; /* total number of cell variables */ \ int co_nfreevars; /* number of free variables */ \ \ PyObject *co_localsplusnames; /* tuple mapping offsets to names */ \ PyObject *co_localspluskinds; /* Bytes mapping to local kinds (one byte \ per variable) */ \ PyObject *co_filename; /* unicode (where it was loaded from) */ \ PyObject *co_name; /* unicode (name, for reference) */ \ PyObject *co_qualname; /* unicode (qualname, for reference) */ \ PyObject *co_linetable; /* bytes object that holds location info */ \ PyObject *co_weakreflist; /* to support weakrefs to code objects */ \ PyObject *_co_code; /* cached co_code object/attribute */ \ char *_co_linearray; /* array of line offsets */ \ int _co_firsttraceable; /* index of first traceable instruction */ \ /* 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; \ char co_code_adaptive[(SIZE)]; \ } /* Bytecode object */ struct PyCodeObject _PyCode_DEF(1); /* 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_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 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) ((op)->co_nfreevars) #define _PyCode_CODE(CO) ((_Py_CODEUNIT *)(CO)->co_code_adaptive) #define _PyCode_NBYTES(CO) (Py_SIZE(CO) * (Py_ssize_t)sizeof(_Py_CODEUNIT)) /* Public interface */ PyAPI_FUNC(PyCodeObject *) PyCode_New( int, int, int, int, int, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *, int, PyObject *, PyObject *); PyAPI_FUNC(PyCodeObject *) PyCode_NewWithPosOnlyArgs( int, int, int, int, int, int, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *, PyObject *, int, PyObject *, 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); PyAPI_FUNC(int) PyCode_Addr2Location(PyCodeObject *, int, int *, int *, int *, int *); /* for internal use only */ struct _opaque { int computed_line; const uint8_t *lo_next; const uint8_t *limit; }; typedef struct _line_offsets { int ar_start; int ar_end; int ar_line; struct _opaque opaque; } PyCodeAddressRange; /* 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(int lasti, PyCodeAddressRange *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); /* Equivalent to getattr(code, 'co_code') in Python. Returns a strong reference to a bytes object. */ PyAPI_FUNC(PyObject *) PyCode_GetCode(PyCodeObject *code); /* Equivalent to getattr(code, 'co_varnames') in Python. */ PyAPI_FUNC(PyObject *) PyCode_GetVarnames(PyCodeObject *code); /* Equivalent to getattr(code, 'co_cellvars') in Python. */ PyAPI_FUNC(PyObject *) PyCode_GetCellvars(PyCodeObject *code); /* Equivalent to getattr(code, 'co_freevars') in Python. */ PyAPI_FUNC(PyObject *) PyCode_GetFreevars(PyCodeObject *code); typedef enum _PyCodeLocationInfoKind { /* short forms are 0 to 9 */ PY_CODE_LOCATION_INFO_SHORT0 = 0, /* one lineforms are 10 to 12 */ PY_CODE_LOCATION_INFO_ONE_LINE0 = 10, PY_CODE_LOCATION_INFO_ONE_LINE1 = 11, PY_CODE_LOCATION_INFO_ONE_LINE2 = 12, PY_CODE_LOCATION_INFO_NO_COLUMNS = 13, PY_CODE_LOCATION_INFO_LONG = 14, PY_CODE_LOCATION_INFO_NONE = 15 } _PyCodeLocationInfoKind; #ifdef __cplusplus } #endif #endif // !Py_CODE_H #endif // !Py_LIMITED_API