Viewing file:  symtablemodule.c (3.67 KB) -rw-r--r--
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#include "Python.h"
#include "pycore_symtable.h" // struct symtable
#include "clinic/symtablemodule.c.h"
/*[clinic input]
module _symtable
[clinic start generated code]*/
/*[clinic end generated code: output=da39a3ee5e6b4b0d input=f4685845a7100605]*/
/*[clinic input]
_symtable.symtable
source: object
filename: object(converter='PyUnicode_FSDecoder')
startstr: str
/
Return symbol and scope dictionaries used internally by compiler.
[clinic start generated code]*/
static PyObject *
_symtable_symtable_impl(PyObject *module, PyObject *source,
PyObject *filename, const char *startstr)
/*[clinic end generated code: output=59eb0d5fc7285ac4 input=9dd8a50c0c36a4d7]*/
{
struct symtable *st;
PyObject *t;
int start;
PyCompilerFlags cf = _PyCompilerFlags_INIT;
PyObject *source_copy = NULL;
cf.cf_flags = PyCF_SOURCE_IS_UTF8;
const char *str = _Py_SourceAsString(source, "symtable", "string or bytes", &cf, &source_copy);
if (str == NULL) {
return NULL;
}
if (strcmp(startstr, "exec") == 0)
start = Py_file_input;
else if (strcmp(startstr, "eval") == 0)
start = Py_eval_input;
else if (strcmp(startstr, "single") == 0)
start = Py_single_input;
else {
PyErr_SetString(PyExc_ValueError,
"symtable() arg 3 must be 'exec' or 'eval' or 'single'");
Py_DECREF(filename);
Py_XDECREF(source_copy);
return NULL;
}
st = _Py_SymtableStringObjectFlags(str, filename, start, &cf);
Py_DECREF(filename);
Py_XDECREF(source_copy);
if (st == NULL) {
return NULL;
}
t = (PyObject *)st->st_top;
Py_INCREF(t);
_PySymtable_Free(st);
return t;
}
static PyMethodDef symtable_methods[] = {
_SYMTABLE_SYMTABLE_METHODDEF
{NULL, NULL} /* sentinel */
};
static int
symtable_init_stentry_type(PyObject *m)
{
return PyType_Ready(&PySTEntry_Type);
}
static int
symtable_init_constants(PyObject *m)
{
if (PyModule_AddIntMacro(m, USE) < 0) return -1;
if (PyModule_AddIntMacro(m, DEF_GLOBAL) < 0) return -1;
if (PyModule_AddIntMacro(m, DEF_NONLOCAL) < 0) return -1;
if (PyModule_AddIntMacro(m, DEF_LOCAL) < 0) return -1;
if (PyModule_AddIntMacro(m, DEF_PARAM) < 0) return -1;
if (PyModule_AddIntMacro(m, DEF_FREE) < 0) return -1;
if (PyModule_AddIntMacro(m, DEF_FREE_CLASS) < 0) return -1;
if (PyModule_AddIntMacro(m, DEF_IMPORT) < 0) return -1;
if (PyModule_AddIntMacro(m, DEF_BOUND) < 0) return -1;
if (PyModule_AddIntMacro(m, DEF_ANNOT) < 0) return -1;
if (PyModule_AddIntConstant(m, "TYPE_FUNCTION", FunctionBlock) < 0)
return -1;
if (PyModule_AddIntConstant(m, "TYPE_CLASS", ClassBlock) < 0) return -1;
if (PyModule_AddIntConstant(m, "TYPE_MODULE", ModuleBlock) < 0)
return -1;
if (PyModule_AddIntMacro(m, LOCAL) < 0) return -1;
if (PyModule_AddIntMacro(m, GLOBAL_EXPLICIT) < 0) return -1;
if (PyModule_AddIntMacro(m, GLOBAL_IMPLICIT) < 0) return -1;
if (PyModule_AddIntMacro(m, FREE) < 0) return -1;
if (PyModule_AddIntMacro(m, CELL) < 0) return -1;
if (PyModule_AddIntConstant(m, "SCOPE_OFF", SCOPE_OFFSET) < 0) return -1;
if (PyModule_AddIntMacro(m, SCOPE_MASK) < 0) return -1;
return 0;
}
static PyModuleDef_Slot symtable_slots[] = {
{Py_mod_exec, symtable_init_stentry_type},
{Py_mod_exec, symtable_init_constants},
{0, NULL}
};
static struct PyModuleDef symtablemodule = {
PyModuleDef_HEAD_INIT,
.m_name = "_symtable",
.m_size = 0,
.m_methods = symtable_methods,
.m_slots = symtable_slots,
};
PyMODINIT_FUNC
PyInit__symtable(void)
{
return PyModuleDef_Init(&symtablemodule);
}
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