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1 /* Definitions for bytecode */ |
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2 |
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3 #ifndef Py_CODE_H |
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4 #define Py_CODE_H |
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5 #ifdef __cplusplus |
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6 extern "C" { |
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7 #endif |
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8 |
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9 /* Bytecode object */ |
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10 typedef struct { |
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11 PyObject_HEAD |
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12 int co_argcount; /* #arguments, except *args */ |
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13 int co_nlocals; /* #local variables */ |
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14 int co_stacksize; /* #entries needed for evaluation stack */ |
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15 int co_flags; /* CO_..., see below */ |
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16 PyObject *co_code; /* instruction opcodes */ |
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17 PyObject *co_consts; /* list (constants used) */ |
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18 PyObject *co_names; /* list of strings (names used) */ |
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19 PyObject *co_varnames; /* tuple of strings (local variable names) */ |
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20 PyObject *co_freevars; /* tuple of strings (free variable names) */ |
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21 PyObject *co_cellvars; /* tuple of strings (cell variable names) */ |
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22 /* The rest doesn't count for hash/cmp */ |
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23 PyObject *co_filename; /* string (where it was loaded from) */ |
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24 PyObject *co_name; /* string (name, for reference) */ |
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25 int co_firstlineno; /* first source line number */ |
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26 PyObject *co_lnotab; /* string (encoding addr<->lineno mapping) */ |
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27 void *co_zombieframe; /* for optimization only (see frameobject.c) */ |
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28 } PyCodeObject; |
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29 |
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30 /* Masks for co_flags above */ |
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31 #define CO_OPTIMIZED 0x0001 |
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32 #define CO_NEWLOCALS 0x0002 |
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33 #define CO_VARARGS 0x0004 |
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34 #define CO_VARKEYWORDS 0x0008 |
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35 #define CO_NESTED 0x0010 |
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36 #define CO_GENERATOR 0x0020 |
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37 /* The CO_NOFREE flag is set if there are no free or cell variables. |
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38 This information is redundant, but it allows a single flag test |
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39 to determine whether there is any extra work to be done when the |
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40 call frame it setup. |
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41 */ |
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42 #define CO_NOFREE 0x0040 |
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43 |
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44 #if 0 |
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45 /* This is no longer used. Stopped defining in 2.5, do not re-use. */ |
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46 #define CO_GENERATOR_ALLOWED 0x1000 |
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47 #endif |
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48 #define CO_FUTURE_DIVISION 0x2000 |
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49 #define CO_FUTURE_ABSOLUTE_IMPORT 0x4000 /* do absolute imports by default */ |
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50 #define CO_FUTURE_WITH_STATEMENT 0x8000 |
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51 #define CO_FUTURE_PRINT_FUNCTION 0x10000 |
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52 #define CO_FUTURE_UNICODE_LITERALS 0x20000 |
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53 |
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54 /* This should be defined if a future statement modifies the syntax. |
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55 For example, when a keyword is added. |
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56 */ |
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57 #if 1 |
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58 #define PY_PARSER_REQUIRES_FUTURE_KEYWORD |
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59 #endif |
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60 |
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61 #define CO_MAXBLOCKS 20 /* Max static block nesting within a function */ |
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62 |
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63 PyAPI_DATA(PyTypeObject) PyCode_Type; |
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64 |
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65 #define PyCode_Check(op) (Py_TYPE(op) == &PyCode_Type) |
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66 #define PyCode_GetNumFree(op) (PyTuple_GET_SIZE((op)->co_freevars)) |
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67 |
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68 /* Public interface */ |
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69 PyAPI_FUNC(PyCodeObject *) PyCode_New( |
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70 int, int, int, int, PyObject *, PyObject *, PyObject *, PyObject *, |
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71 PyObject *, PyObject *, PyObject *, PyObject *, int, PyObject *); |
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72 /* same as struct above */ |
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73 PyAPI_FUNC(int) PyCode_Addr2Line(PyCodeObject *, int); |
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74 |
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75 /* for internal use only */ |
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76 #define _PyCode_GETCODEPTR(co, pp) \ |
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77 ((*Py_TYPE((co)->co_code)->tp_as_buffer->bf_getreadbuffer) \ |
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78 ((co)->co_code, 0, (void **)(pp))) |
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79 |
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80 typedef struct _addr_pair { |
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81 int ap_lower; |
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82 int ap_upper; |
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83 } PyAddrPair; |
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84 |
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85 /* Check whether lasti (an instruction offset) falls outside bounds |
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86 and whether it is a line number that should be traced. Returns |
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87 a line number if it should be traced or -1 if the line should not. |
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88 |
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89 If lasti is not within bounds, updates bounds. |
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90 */ |
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91 |
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92 PyAPI_FUNC(int) PyCode_CheckLineNumber(PyCodeObject* co, |
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93 int lasti, PyAddrPair *bounds); |
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94 |
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95 PyAPI_FUNC(PyObject*) PyCode_Optimize(PyObject *code, PyObject* consts, |
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96 PyObject *names, PyObject *lineno_obj); |
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97 |
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98 #ifdef __cplusplus |
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99 } |
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100 #endif |
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101 #endif /* !Py_CODE_H */ |