Home | History | Annotate | Download | only in Modules 
      1 #include "Python.h"
      2 
      3 #include "code.h"
      4 #include "compile.h"
      5 #include "Python-ast.h"
      6 #include "symtable.h"
      7 
      8 static PyObject *
      9 symtable_symtable(PyObject *self, PyObject *args)
     10 {
     11     struct symtable *st;
     12     PyObject *t;
     13 
     14     char *str;
     15     char *filename;
     16     char *startstr;
     17     int start;
     18 
     19     if (!PyArg_ParseTuple(args, "sss:symtable", &str, &filename,
     20                           &startstr))
     21         return NULL;
     22     if (strcmp(startstr, "exec") == 0)
     23         start = Py_file_input;
     24     else if (strcmp(startstr, "eval") == 0)
     25         start = Py_eval_input;
     26     else if (strcmp(startstr, "single") == 0)
     27         start = Py_single_input;
     28     else {
     29         PyErr_SetString(PyExc_ValueError,
     30            "symtable() arg 3 must be 'exec' or 'eval' or 'single'");
     31         return NULL;
     32     }
     33     st = Py_SymtableString(str, filename, start);
     34     if (st == NULL)
     35         return NULL;
     36     t = (PyObject *)st->st_top;
     37     Py_INCREF(t);
     38     PyMem_Free((void *)st->st_future);
     39     PySymtable_Free(st);
     40     return t;
     41 }
     42 
     43 static PyMethodDef symtable_methods[] = {
     44     {"symtable",        symtable_symtable,      METH_VARARGS,
     45      PyDoc_STR("Return symbol and scope dictionaries"
     46                " used internally by compiler.")},
     47     {NULL,              NULL}           /* sentinel */
     48 };
     49 
     50 PyMODINIT_FUNC
     51 init_symtable(void)
     52 {
     53     PyObject *m;
     54 
     55     if (PyType_Ready(&PySTEntry_Type) < 0)
     56         return;
     57 
     58     m = Py_InitModule("_symtable", symtable_methods);
     59     if (m == NULL)
     60         return;
     61     PyModule_AddIntConstant(m, "USE", USE);
     62     PyModule_AddIntConstant(m, "DEF_GLOBAL", DEF_GLOBAL);
     63     PyModule_AddIntConstant(m, "DEF_LOCAL", DEF_LOCAL);
     64     PyModule_AddIntConstant(m, "DEF_PARAM", DEF_PARAM);
     65     PyModule_AddIntConstant(m, "DEF_FREE", DEF_FREE);
     66     PyModule_AddIntConstant(m, "DEF_FREE_CLASS", DEF_FREE_CLASS);
     67     PyModule_AddIntConstant(m, "DEF_IMPORT", DEF_IMPORT);
     68     PyModule_AddIntConstant(m, "DEF_BOUND", DEF_BOUND);
     69 
     70     PyModule_AddIntConstant(m, "TYPE_FUNCTION", FunctionBlock);
     71     PyModule_AddIntConstant(m, "TYPE_CLASS", ClassBlock);
     72     PyModule_AddIntConstant(m, "TYPE_MODULE", ModuleBlock);
     73 
     74     PyModule_AddIntConstant(m, "OPT_IMPORT_STAR", OPT_IMPORT_STAR);
     75     PyModule_AddIntConstant(m, "OPT_EXEC", OPT_EXEC);
     76     PyModule_AddIntConstant(m, "OPT_BARE_EXEC", OPT_BARE_EXEC);
     77 
     78     PyModule_AddIntConstant(m, "LOCAL", LOCAL);
     79     PyModule_AddIntConstant(m, "GLOBAL_EXPLICIT", GLOBAL_EXPLICIT);
     80     PyModule_AddIntConstant(m, "GLOBAL_IMPLICIT", GLOBAL_IMPLICIT);
     81     PyModule_AddIntConstant(m, "FREE", FREE);
     82     PyModule_AddIntConstant(m, "CELL", CELL);
     83 
     84     PyModule_AddIntConstant(m, "SCOPE_OFF", SCOPE_OFF);
     85     PyModule_AddIntConstant(m, "SCOPE_MASK", SCOPE_MASK);
     86 }
     87