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_opcode.c
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96 lines (82 loc) · 2.13 KB
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#include "Python.h"
#include "opcode.h"
/*[clinic input]
module _opcode
[clinic start generated code]*/
/*[clinic end generated code: output=da39a3ee5e6b4b0d input=117442e66eb376e6]*/
#include "clinic/_opcode.c.h"
/*[clinic input]
_opcode.stack_effect -> int
opcode: int
oparg: object = None
/
*
jump: object = None
Compute the stack effect of the opcode.
[clinic start generated code]*/
static int
_opcode_stack_effect_impl(PyObject *module, int opcode, PyObject *oparg,
PyObject *jump)
/*[clinic end generated code: output=64a18f2ead954dbb input=461c9d4a44851898]*/
{
int effect;
int oparg_int = 0;
int jump_int;
if (HAS_ARG(opcode)) {
if (oparg == Py_None) {
PyErr_SetString(PyExc_ValueError,
"stack_effect: opcode requires oparg but oparg was not specified");
return -1;
}
oparg_int = (int)PyLong_AsLong(oparg);
if ((oparg_int == -1) && PyErr_Occurred())
return -1;
}
else if (oparg != Py_None) {
PyErr_SetString(PyExc_ValueError,
"stack_effect: opcode does not permit oparg but oparg was specified");
return -1;
}
if (jump == Py_None) {
jump_int = -1;
}
else if (jump == Py_True) {
jump_int = 1;
}
else if (jump == Py_False) {
jump_int = 0;
}
else {
PyErr_SetString(PyExc_ValueError,
"stack_effect: jump must be False, True or None");
return -1;
}
effect = PyCompile_OpcodeStackEffectWithJump(opcode, oparg_int, jump_int);
if (effect == PY_INVALID_STACK_EFFECT) {
PyErr_SetString(PyExc_ValueError,
"invalid opcode or oparg");
return -1;
}
return effect;
}
static PyMethodDef
opcode_functions[] = {
_OPCODE_STACK_EFFECT_METHODDEF
{NULL, NULL, 0, NULL}
};
static struct PyModuleDef opcodemodule = {
PyModuleDef_HEAD_INIT,
"_opcode",
"Opcode support module.",
-1,
opcode_functions,
NULL,
NULL,
NULL,
NULL
};
PyMODINIT_FUNC
PyInit__opcode(void)
{
return PyModule_Create(&opcodemodule);
}