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gh-110964: clinic: refactor output_templates() by vstinner · Pull Request #110982 · python/cpython · GitHub

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gh-110964: clinic: refactor output_templates() #110982

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Merged
vstinner merged 1 commit into from
Oct 20, 2023
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gh-110964: clinic: refactor output_templates() #110982

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109 changes: 53 additions & 56 deletions Tools/clinic/clinic.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1432,67 +1432,64 @@ def parser_body(
deprecated_keywords[i] = p

has_optional_kw = (max(pos_only, min_pos) + min_kw_only < len(converters) - int(vararg != NO_VARARG))
if vararg == NO_VARARG:
# FIXME: refactor the code to not declare args_declaration
# if limited_capi is true
if not limited_capi:
clinic.add_include('pycore_modsupport.h',
'_PyArg_UnpackKeywords()')
args_declaration = "_PyArg_UnpackKeywords", "%s, %s, %s" % (
min_pos,
max_pos,
min_kw_only
)
nargs = "nargs"
else:
if not limited_capi:
clinic.add_include('pycore_modsupport.h',
'_PyArg_UnpackKeywordsWithVararg()')
args_declaration = "_PyArg_UnpackKeywordsWithVararg", "%s, %s, %s, %s" % (
min_pos,
max_pos,
min_kw_only,
vararg
)
nargs = f"Py_MIN(nargs, {max_pos})" if max_pos else "0"

if limited_capi:
parser_code = None
fastcall = False

elif fastcall:
flags = "METH_FASTCALL|METH_KEYWORDS"
parser_prototype = self.PARSER_PROTOTYPE_FASTCALL_KEYWORDS
argname_fmt = 'args[%d]'
declarations = declare_parser(f, clinic=clinic,
limited_capi=clinic.limited_capi)
declarations += "\nPyObject *argsbuf[%s];" % len(converters)
if has_optional_kw:
declarations += "\nPy_ssize_t noptargs = %s + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - %d;" % (nargs, min_pos + min_kw_only)
parser_code = [normalize_snippet("""
args = %s(args, nargs, NULL, kwnames, &_parser, %s, argsbuf);
if (!args) {{
goto exit;
}}
""" % args_declaration, indent=4)]
else:
# positional-or-keyword arguments
flags = "METH_VARARGS|METH_KEYWORDS"
parser_prototype = self.PARSER_PROTOTYPE_KEYWORD
argname_fmt = 'fastargs[%d]'
declarations = declare_parser(f, clinic=clinic,
limited_capi=clinic.limited_capi)
declarations += "\nPyObject *argsbuf[%s];" % len(converters)
declarations += "\nPyObject * const *fastargs;"
declarations += "\nPy_ssize_t nargs = PyTuple_GET_SIZE(args);"
if has_optional_kw:
declarations += "\nPy_ssize_t noptargs = %s + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - %d;" % (nargs, min_pos + min_kw_only)
parser_code = [normalize_snippet("""
fastargs = %s(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser, %s, argsbuf);
if (!fastargs) {{
goto exit;
}}
""" % args_declaration, indent=4)]
if vararg == NO_VARARG:
clinic.add_include('pycore_modsupport.h',
'_PyArg_UnpackKeywords()')
args_declaration = "_PyArg_UnpackKeywords", "%s, %s, %s" % (
min_pos,
max_pos,
min_kw_only
)
nargs = "nargs"
else:
clinic.add_include('pycore_modsupport.h',
'_PyArg_UnpackKeywordsWithVararg()')
args_declaration = "_PyArg_UnpackKeywordsWithVararg", "%s, %s, %s, %s" % (
min_pos,
max_pos,
min_kw_only,
vararg
)
nargs = f"Py_MIN(nargs, {max_pos})" if max_pos else "0"

if fastcall:
flags = "METH_FASTCALL|METH_KEYWORDS"
parser_prototype = self.PARSER_PROTOTYPE_FASTCALL_KEYWORDS
argname_fmt = 'args[%d]'
declarations = declare_parser(f, clinic=clinic,
limited_capi=clinic.limited_capi)
declarations += "\nPyObject *argsbuf[%s];" % len(converters)
if has_optional_kw:
declarations += "\nPy_ssize_t noptargs = %s + (kwnames ? PyTuple_GET_SIZE(kwnames) : 0) - %d;" % (nargs, min_pos + min_kw_only)
parser_code = [normalize_snippet("""
args = %s(args, nargs, NULL, kwnames, &_parser, %s, argsbuf);
if (!args) {{
goto exit;
}}
""" % args_declaration, indent=4)]
else:
# positional-or-keyword arguments
flags = "METH_VARARGS|METH_KEYWORDS"
parser_prototype = self.PARSER_PROTOTYPE_KEYWORD
argname_fmt = 'fastargs[%d]'
declarations = declare_parser(f, clinic=clinic,
limited_capi=clinic.limited_capi)
declarations += "\nPyObject *argsbuf[%s];" % len(converters)
declarations += "\nPyObject * const *fastargs;"
declarations += "\nPy_ssize_t nargs = PyTuple_GET_SIZE(args);"
if has_optional_kw:
declarations += "\nPy_ssize_t noptargs = %s + (kwargs ? PyDict_GET_SIZE(kwargs) : 0) - %d;" % (nargs, min_pos + min_kw_only)
parser_code = [normalize_snippet("""
fastargs = %s(_PyTuple_CAST(args)->ob_item, nargs, kwargs, NULL, &_parser, %s, argsbuf);
if (!fastargs) {{
goto exit;
}}
""" % args_declaration, indent=4)]

if requires_defining_class:
flags = 'METH_METHOD|' + flags
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