#include "Python.h"

#include "code.h"

#include "Python-ast.h"

#include "symtable.h"

#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);

    PyMem_Free((void *)st->st_future);

    PySymtable_Free(st);

    return t;

}

static PyMethodDef symtable_methods[] = {

    _SYMTABLE_SYMTABLE_METHODDEF

    {NULL,              NULL}           /* sentinel */

};

static struct PyModuleDef symtablemodule = {

    PyModuleDef_HEAD_INIT,

    "_symtable",

    NULL,

    -1,

    symtable_methods,

    NULL,

    NULL,

    NULL,

    NULL

};

PyMODINIT_FUNC

PyInit__symtable(void)

{

    PyObject *m;

    if (PyType_Ready(&PySTEntry_Type) < 0)

        return NULL;

    m = PyModule_Create(&symtablemodule);

    if (m == NULL)

        return NULL;

    PyModule_AddIntMacro(m, USE);

    PyModule_AddIntMacro(m, DEF_GLOBAL);

    PyModule_AddIntMacro(m, DEF_NONLOCAL);

    PyModule_AddIntMacro(m, DEF_LOCAL);

    PyModule_AddIntMacro(m, DEF_PARAM);

    PyModule_AddIntMacro(m, DEF_FREE);

    PyModule_AddIntMacro(m, DEF_FREE_CLASS);

    PyModule_AddIntMacro(m, DEF_IMPORT);

    PyModule_AddIntMacro(m, DEF_BOUND);

    PyModule_AddIntMacro(m, DEF_ANNOT);

    PyModule_AddIntConstant(m, "TYPE_FUNCTION", FunctionBlock);

    PyModule_AddIntConstant(m, "TYPE_CLASS", ClassBlock);

    PyModule_AddIntConstant(m, "TYPE_MODULE", ModuleBlock);

    PyModule_AddIntMacro(m, LOCAL);

    PyModule_AddIntMacro(m, GLOBAL_EXPLICIT);

    PyModule_AddIntMacro(m, GLOBAL_IMPLICIT);

    PyModule_AddIntMacro(m, FREE);

    PyModule_AddIntMacro(m, CELL);

    PyModule_AddIntConstant(m, "SCOPE_OFF", SCOPE_OFFSET);

    PyModule_AddIntMacro(m, SCOPE_MASK);

    if (PyErr_Occurred()) {

        Py_DECREF(m);

        m = 0;

    }

    return m;

}