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cpython/Modules/_opcode.c at 3.5 · python/cpython · GitHub
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_opcode.c
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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
/
Compute the stack effect of the opcode.
[clinic start generated code]*/
static
int
_opcode_stack_effect_impl
(
PyObject
*
module
,
int
opcode
,
PyObject
*
oparg
)
/*[clinic end generated code: output=ad39467fa3ad22ce input=2d0a9ee53c0418f5]*/
{
int
effect
;
int
oparg_int
=
0
;
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
;
}
effect
=
PyCompile_OpcodeStackEffect
(
opcode
,
oparg_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
);
}
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