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Simplified recursion logic. Modified variable name to match string.Formatter.

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Eric Smith 2007-09-05 02:02:43 +00:00
parent 11529195ca
commit 45c078736e
1 changed files with 10 additions and 12 deletions
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22
Objects/stringlib/string_format.h
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@ -29,7 +29,7 @@ typedef struct {
/* forward declaration for recursion */ /* forward declaration for recursion */
static PyObject * static PyObject *
build_string(SubString *input, PyObject *args, PyObject *kwargs, build_string(SubString *input, PyObject *args, PyObject *kwargs,
int *recursion_level); int recursion_depth);
@ -792,7 +792,7 @@ static int
output_markup(SubString *field_name, SubString *format_spec, output_markup(SubString *field_name, SubString *format_spec,
int format_spec_needs_expanding, STRINGLIB_CHAR conversion, int format_spec_needs_expanding, STRINGLIB_CHAR conversion,
OutputString *output, PyObject *args, PyObject *kwargs, OutputString *output, PyObject *args, PyObject *kwargs,
int *recursion_level) int recursion_depth)
{ {
PyObject *tmp = NULL; PyObject *tmp = NULL;
PyObject *fieldobj = NULL; PyObject *fieldobj = NULL;
@ -818,7 +818,7 @@ output_markup(SubString *field_name, SubString *format_spec,
/* if needed, recurively compute the format_spec */ /* if needed, recurively compute the format_spec */
if (format_spec_needs_expanding) { if (format_spec_needs_expanding) {
tmp = build_string(format_spec, args, kwargs, recursion_level); tmp = build_string(format_spec, args, kwargs, recursion_depth-1);
if (tmp == NULL) if (tmp == NULL)
goto done; goto done;
@ -852,7 +852,7 @@ output_markup(SubString *field_name, SubString *format_spec,
*/ */
static int static int
do_markup(SubString *input, PyObject *args, PyObject *kwargs, do_markup(SubString *input, PyObject *args, PyObject *kwargs,
OutputString *output, int *recursion_level) OutputString *output, int recursion_depth)
{ {
MarkupIterator iter; MarkupIterator iter;
int format_spec_needs_expanding; int format_spec_needs_expanding;
@ -871,7 +871,7 @@ do_markup(SubString *input, PyObject *args, PyObject *kwargs,
if (field_name.ptr != field_name.end) if (field_name.ptr != field_name.end)
if (!output_markup(&field_name, &format_spec, if (!output_markup(&field_name, &format_spec,
format_spec_needs_expanding, conversion, output, format_spec_needs_expanding, conversion, output,
args, kwargs, recursion_level)) args, kwargs, recursion_depth))
return 0; return 0;
} }
return result; return result;
@ -884,7 +884,7 @@ do_markup(SubString *input, PyObject *args, PyObject *kwargs,
*/ */
static PyObject * static PyObject *
build_string(SubString *input, PyObject *args, PyObject *kwargs, build_string(SubString *input, PyObject *args, PyObject *kwargs,
int *recursion_level) int recursion_depth)
{ {
OutputString output; OutputString output;
PyObject *result = NULL; PyObject *result = NULL;
@ -893,8 +893,7 @@ build_string(SubString *input, PyObject *args, PyObject *kwargs,
output.obj = NULL; /* needed so cleanup code always works */ output.obj = NULL; /* needed so cleanup code always works */
/* check the recursion level */ /* check the recursion level */
(*recursion_level)--; if (recursion_depth <= 0) {
if (*recursion_level < 0) {
PyErr_SetString(PyExc_ValueError, PyErr_SetString(PyExc_ValueError,
"Max string recursion exceeded"); "Max string recursion exceeded");
goto done; goto done;
@ -907,7 +906,7 @@ build_string(SubString *input, PyObject *args, PyObject *kwargs,
INITIAL_SIZE_INCREMENT)) INITIAL_SIZE_INCREMENT))
goto done; goto done;
if (!do_markup(input, args, kwargs, &output, recursion_level)) { if (!do_markup(input, args, kwargs, &output, recursion_depth)) {
goto done; goto done;
} }
@ -921,7 +920,6 @@ build_string(SubString *input, PyObject *args, PyObject *kwargs,
output.obj = NULL; output.obj = NULL;
done: done:
(*recursion_level)++;
Py_XDECREF(output.obj); Py_XDECREF(output.obj);
return result; return result;
} }
@ -940,10 +938,10 @@ do_string_format(PyObject *self, PyObject *args, PyObject *kwargs)
"{0:{1}}".format('abc', 's') # works "{0:{1}}".format('abc', 's') # works
"{0:{1:{2}}}".format('abc', 's', '') # fails "{0:{1:{2}}}".format('abc', 's', '') # fails
*/ */
int recursion_level = 2; int recursion_depth = 2;
SubString_init(&input, STRINGLIB_STR(self), STRINGLIB_LEN(self)); SubString_init(&input, STRINGLIB_STR(self), STRINGLIB_LEN(self));
return build_string(&input, args, kwargs, &recursion_level); return build_string(&input, args, kwargs, recursion_depth);
} }