1 #include "Python.h"
2 #include "opcode.h"
3
4 /*[clinic input]
5 module _opcode
6 [clinic start generated code]*/
7 /*[clinic end generated code: output=da39a3ee5e6b4b0d input=117442e66eb376e6]*/
8
9 #include "clinic/_opcode.c.h"
10
11 /*[clinic input]
12
13 _opcode.stack_effect -> int
14
15 opcode: int
16 oparg: object = None
17 /
18
19 Compute the stack effect of the opcode.
20 [clinic start generated code]*/
21
22 static int
_opcode_stack_effect_impl(PyObject * module,int opcode,PyObject * oparg)23 _opcode_stack_effect_impl(PyObject *module, int opcode, PyObject *oparg)
24 /*[clinic end generated code: output=ad39467fa3ad22ce input=2d0a9ee53c0418f5]*/
25 {
26 int effect;
27 int oparg_int = 0;
28 if (HAS_ARG(opcode)) {
29 if (oparg == Py_None) {
30 PyErr_SetString(PyExc_ValueError,
31 "stack_effect: opcode requires oparg but oparg was not specified");
32 return -1;
33 }
34 oparg_int = (int)PyLong_AsLong(oparg);
35 if ((oparg_int == -1) && PyErr_Occurred())
36 return -1;
37 }
38 else if (oparg != Py_None) {
39 PyErr_SetString(PyExc_ValueError,
40 "stack_effect: opcode does not permit oparg but oparg was specified");
41 return -1;
42 }
43 effect = PyCompile_OpcodeStackEffect(opcode, oparg_int);
44 if (effect == PY_INVALID_STACK_EFFECT) {
45 PyErr_SetString(PyExc_ValueError,
46 "invalid opcode or oparg");
47 return -1;
48 }
49 return effect;
50 }
51
52
53
54
55 static PyMethodDef
56 opcode_functions[] = {
57 _OPCODE_STACK_EFFECT_METHODDEF
58 {NULL, NULL, 0, NULL}
59 };
60
61
62 static struct PyModuleDef opcodemodule = {
63 PyModuleDef_HEAD_INIT,
64 "_opcode",
65 "Opcode support module.",
66 -1,
67 opcode_functions,
68 NULL,
69 NULL,
70 NULL,
71 NULL
72 };
73
74 PyMODINIT_FUNC
PyInit__opcode(void)75 PyInit__opcode(void)
76 {
77 return PyModule_Create(&opcodemodule);
78 }
79