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annotate Modules/symtablemodule.c @ 66410:dcb60bf26dce

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information on Issue #9846
author Łukasz Langa <lukasz@langa.pl>
date Tue, 23 Nov 2010 00:19:53 +0000
parents cab14be0ada1
children 724920a015f7
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1 #include "Python.h"
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2
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3 #include "code.h"
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4 #include "compile.h"
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5 #include "Python-ast.h"
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6 #include "symtable.h"
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7
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8 static PyObject *
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9 symtable_symtable(PyObject *self, PyObject *args)
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10 {
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11 struct symtable *st;
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12 PyObject *t;
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13
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14 char *str;
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15 char *filename;
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16 char *startstr;
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17 int start;
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18
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19 if (!PyArg_ParseTuple(args, "sss:symtable", &str, &filename,
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20 &startstr))
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21 return NULL;
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22 if (strcmp(startstr, "exec") == 0)
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23 start = Py_file_input;
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24 else if (strcmp(startstr, "eval") == 0)
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25 start = Py_eval_input;
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26 else if (strcmp(startstr, "single") == 0)
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27 start = Py_single_input;
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28 else {
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29 PyErr_SetString(PyExc_ValueError,
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30 "symtable() arg 3 must be 'exec' or 'eval' or 'single'");
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31 return NULL;
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32 }
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33 st = Py_SymtableString(str, filename, start);
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34 if (st == NULL)
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35 return NULL;
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36 t = st->st_blocks;
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37 Py_INCREF(t);
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38 PyMem_Free((void *)st->st_future);
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39 PySymtable_Free(st);
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40 return t;
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41 }
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42
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43 static PyMethodDef symtable_methods[] = {
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44 {"symtable", symtable_symtable, METH_VARARGS,
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45 PyDoc_STR("Return symbol and scope dictionaries"
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46 " used internally by compiler.")},
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47 {NULL, NULL} /* sentinel */
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48 };
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49
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50 static struct PyModuleDef symtablemodule = {
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51 PyModuleDef_HEAD_INIT,
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52 "_symtable",
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53 NULL,
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54 -1,
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55 symtable_methods,
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56 NULL,
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57 NULL,
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58 NULL,
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59 NULL
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60 };
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61
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62 PyMODINIT_FUNC
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63 PyInit__symtable(void)
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64 {
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65 PyObject *m;
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66
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67 m = PyModule_Create(&symtablemodule);
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68 if (m == NULL)
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69 return NULL;
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70 PyModule_AddIntConstant(m, "USE", USE);
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71 PyModule_AddIntConstant(m, "DEF_GLOBAL", DEF_GLOBAL);
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72 PyModule_AddIntConstant(m, "DEF_LOCAL", DEF_LOCAL);
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73 PyModule_AddIntConstant(m, "DEF_PARAM", DEF_PARAM);
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74 PyModule_AddIntConstant(m, "DEF_FREE", DEF_FREE);
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75 PyModule_AddIntConstant(m, "DEF_FREE_CLASS", DEF_FREE_CLASS);
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76 PyModule_AddIntConstant(m, "DEF_IMPORT", DEF_IMPORT);
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77 PyModule_AddIntConstant(m, "DEF_BOUND", DEF_BOUND);
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78
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79 PyModule_AddIntConstant(m, "TYPE_FUNCTION", FunctionBlock);
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80 PyModule_AddIntConstant(m, "TYPE_CLASS", ClassBlock);
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81 PyModule_AddIntConstant(m, "TYPE_MODULE", ModuleBlock);
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82
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83 PyModule_AddIntConstant(m, "OPT_IMPORT_STAR", OPT_IMPORT_STAR);
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84 PyModule_AddIntConstant(m, "OPT_TOPLEVEL", OPT_TOPLEVEL);
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85
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86 PyModule_AddIntConstant(m, "LOCAL", LOCAL);
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87 PyModule_AddIntConstant(m, "GLOBAL_EXPLICIT", GLOBAL_EXPLICIT);
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88 PyModule_AddIntConstant(m, "GLOBAL_IMPLICIT", GLOBAL_IMPLICIT);
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89 PyModule_AddIntConstant(m, "FREE", FREE);
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90 PyModule_AddIntConstant(m, "CELL", CELL);
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91
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92 PyModule_AddIntConstant(m, "SCOPE_OFF", SCOPE_OFFSET);
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93 PyModule_AddIntConstant(m, "SCOPE_MASK", SCOPE_MASK);
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94
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95 if (PyErr_Occurred()) {
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96 Py_DECREF(m);
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97 m = 0;
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98 }
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99 return m;
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100 }