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PyCode_NewEmpty:

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Most uses of PyCode_New found by http://www.google.com/codesearch?q=PyCode_New
are trying to build an empty code object, usually to put it in a dummy frame
object. This patch adds a PyCode_NewEmpty wrapper which lets the user specify
just the filename, function name, and first line number, instead of also
requiring lots of code internals.
This commit is contained in:
Jeffrey Yasskin 2009-05-08 21:51:06 +00:00
parent 083d1f9f9a
commit 1aa4700234
9 changed files with 139 additions and 76 deletions
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46
Objects/codeobject.c
View file

@ -107,6 +107,52 @@ PyCode_New(int argcount, int nlocals, int stacksize, int flags,
return co;
}
PyCodeObject *
PyCode_NewEmpty(const char *filename, const char *funcname, int firstlineno)
{
static PyObject *emptystring = NULL;
static PyObject *nulltuple = NULL;
PyObject *filename_ob = NULL;
PyObject *funcname_ob = NULL;
PyCodeObject *result = NULL;
if (emptystring == NULL) {
emptystring = PyString_FromString("");
if (emptystring == NULL)
goto failed;
}
if (nulltuple == NULL) {
nulltuple = PyTuple_New(0);
if (nulltuple == NULL)
goto failed;
}
funcname_ob = PyString_FromString(funcname);
if (funcname_ob == NULL)
goto failed;
filename_ob = PyString_FromString(filename);
if (filename_ob == NULL)
goto failed;
result = PyCode_New(0, /* argcount */
0, /* nlocals */
0, /* stacksize */
0, /* flags */
emptystring, /* code */
nulltuple, /* consts */
nulltuple, /* names */
nulltuple, /* varnames */
nulltuple, /* freevars */
nulltuple, /* cellvars */
filename_ob, /* filename */
funcname_ob, /* name */
firstlineno, /* firstlineno */
emptystring /* lnotab */
);
failed:
Py_XDECREF(funcname_ob);
Py_XDECREF(filename_ob);
return result;
}
#define OFF(x) offsetof(PyCodeObject, x)