Skip to content

C
cython
Commit a017edc9 authored by Stefan Behnel's avatar Stefan Behnel
Browse files
Options

refactoring: split huge code generation method into several smaller methods

parent ccd34cbc
Show whitespace changes
Inline Side-by-side
Showing with 95 additions and 99 deletions
Cython/Compiler/Nodes.py
View file @ a017edc9
......@@ -993,7 +993,6 @@ class FuncDefNode(StatNode, BlockNode):
for entry in lenv.arg_entries:
if entry.type.is_pyobject and lenv.control_flow.get_state((entry.name, 'source')) != 'arg':
code.put_var_decref(entry)
self.put_stararg_decrefs(code)
if acquire_gil:
code.putln("PyGILState_Release(_save);")
# code.putln("/* TODO: decref scope object */")
......@@ -1010,9 +1009,6 @@ class FuncDefNode(StatNode, BlockNode):
self.py_func.generate_function_definitions(env, code)
self.generate_optarg_wrapper_function(env, code)
def put_stararg_decrefs(self, code):
pass
def declare_argument(self, env, arg):
if arg.type.is_void:
error(arg.pos, "Invalid use of 'void'")
......@@ -1619,7 +1615,6 @@ class DefNode(FuncDefNode):
code.put_goto(end_label)
code.put_label(our_error_label)
if has_star_or_kw_args:
self.put_stararg_decrefs(code)
self.generate_arg_decref(self.star_arg, code)
if self.starstar_arg:
if self.starstar_arg.entry.xdecref_cleanup:
......@@ -1647,9 +1642,6 @@ class DefNode(FuncDefNode):
else:
error(arg.pos, "Cannot convert Python object argument to type '%s'" % arg.type)
def put_stararg_decrefs(self, code):
pass
def generate_arg_xdecref(self, arg, code):
if arg:
code.put_var_xdecref(arg.entry)
......@@ -1666,7 +1658,12 @@ class DefNode(FuncDefNode):
def generate_stararg_copy_code(self, code):
if not self.star_arg:
self.generate_positional_args_check(0, True, code)
code.globalstate.use_utility_code(raise_argtuple_invalid_utility_code)
code.putln("if (unlikely(PyTuple_GET_SIZE(%s) > 0)) {" %
Naming.args_cname)
code.put('__Pyx_RaiseArgtupleInvalid("%s", 1, 0, 0, PyTuple_GET_SIZE(%s)); return %s;' % (
self.name.utf8encode(), Naming.args_cname, self.error_value()))
code.putln("}")
code.globalstate.use_utility_code(keyword_string_check_utility_code)
......@@ -1693,22 +1690,101 @@ class DefNode(FuncDefNode):
def generate_tuple_and_keyword_parsing_code(self, positional_args,
kw_only_args, success_label, code):
all_args = tuple(positional_args) + tuple(kw_only_args)
argtuple_error_label = code.new_label("argtuple_error")
min_positional_args = self.num_required_args - self.num_required_kw_args
if len(self.args) > 0 and self.args[0].is_self_arg:
min_positional_args -= 1
max_positional_args = len(positional_args)
max_args = len(all_args)
has_fixed_positional_count = not self.star_arg and \
min_positional_args == max_positional_args
code.globalstate.use_utility_code(raise_double_keywords_utility_code)
code.globalstate.use_utility_code(raise_argtuple_invalid_utility_code)
if self.num_required_kw_args:
code.globalstate.use_utility_code(raise_keyword_required_utility_code)
if self.starstar_arg or self.star_arg:
self.generate_stararg_init_code(max_positional_args, code)
# --- optimised code when we receive keyword arguments
if self.num_required_kw_args:
code.putln("if (likely(%s)) {" % Naming.kwds_cname)
else:
code.putln("if (unlikely(%s) && (PyDict_Size(%s) > 0)) {" % (
Naming.kwds_cname, Naming.kwds_cname))
self.generate_keyword_unpacking_code(
min_positional_args, max_positional_args,
positional_args, kw_only_args, argtuple_error_label, code)
# --- optimised code when we do not receive any keyword arguments
if min_positional_args > 0 or min_positional_args == max_positional_args:
# Python raises arg tuple related errors first, so we must
# check the length here
if min_positional_args == max_positional_args and not self.star_arg:
compare = '!='
else:
compare = '<'
code.putln('} else if (PyTuple_GET_SIZE(%s) %s %d) {' % (
Naming.args_cname, compare, min_positional_args))
code.put_goto(argtuple_error_label)
if self.num_required_kw_args:
# pure error case: keywords required but not passed
if max_positional_args > min_positional_args and not self.star_arg:
code.putln('} else if (PyTuple_GET_SIZE(%s) > %d) {' % (
Naming.args_cname, max_positional_args))
code.put_goto(argtuple_error_label)
code.putln('} else {')
for i, arg in enumerate(kw_only_args):
if not arg.default:
# required keyword-only argument missing
code.put('__Pyx_RaiseKeywordRequired("%s", *%s[%d]); ' % (
self.name.utf8encode(), Naming.pykwdlist_cname,
len(positional_args) + i))
code.putln(code.error_goto(self.pos))
break
elif min_positional_args == max_positional_args:
# parse the exact number of positional arguments from the
# args tuple
code.putln('} else {')
for i, arg in enumerate(positional_args):
item = "PyTuple_GET_ITEM(%s, %d)" % (Naming.args_cname, i)
self.generate_arg_assignment(arg, item, code)
else:
# parse the positional arguments from the variable length
# args tuple
code.putln('} else {')
code.putln('switch (PyTuple_GET_SIZE(%s)) {' % Naming.args_cname)
reversed_args = list(enumerate(positional_args))[::-1]
for i, arg in reversed_args:
if i >= min_positional_args-1:
if min_positional_args > 1:
code.putln('case %2d:' % (i+1)) # pure code beautification
else:
code.put('case %2d: ' % (i+1))
item = "PyTuple_GET_ITEM(%s, %d)" % (Naming.args_cname, i)
self.generate_arg_assignment(arg, item, code)
if not self.star_arg:
if min_positional_args == 0:
code.put('case 0: ')
code.putln('break;')
code.put('default: ')
code.put_goto(argtuple_error_label)
code.putln('}')
code.putln('}')
if code.label_used(argtuple_error_label):
code.put_goto(success_label)
code.put_label(argtuple_error_label)
has_fixed_positional_count = not self.star_arg and \
min_positional_args == max_positional_args
code.put('__Pyx_RaiseArgtupleInvalid("%s", %d, %d, %d, PyTuple_GET_SIZE(%s)); ' % (
self.name.utf8encode(), has_fixed_positional_count,
min_positional_args, max_positional_args,
Naming.args_cname))
code.putln(code.error_goto(self.pos))
def generate_stararg_init_code(self, max_positional_args, code):
if self.starstar_arg:
self.starstar_arg.entry.xdecref_cleanup = 0
code.putln('%s = PyDict_New(); if (unlikely(!%s)) return %s;' % (
......@@ -1737,12 +1813,12 @@ class DefNode(FuncDefNode):
code.put_incref(Naming.empty_tuple, py_object_type)
code.putln('}')
# --- optimised code when we receive keyword arguments
if self.num_required_kw_args:
code.putln("if (likely(%s)) {" % Naming.kwds_cname)
else:
code.putln("if (unlikely(%s) && (PyDict_Size(%s) > 0)) {" % (
Naming.kwds_cname, Naming.kwds_cname))
def generate_keyword_unpacking_code(self, min_positional_args, max_positional_args,
positional_args, kw_only_args,
argtuple_error_label, code):
all_args = tuple(positional_args) + tuple(kw_only_args)
max_args = len(all_args)
code.putln("PyObject* values[%d] = {%s};" % (
max_args, ('0,'*max_args)[:-1]))
code.putln("Py_ssize_t kw_args = PyDict_Size(%s);" %
......@@ -1814,86 +1890,6 @@ class DefNode(FuncDefNode):
if arg.default:
code.putln('}')
# --- optimised code when we do not receive any keyword arguments
if min_positional_args > 0 or min_positional_args == max_positional_args:
# Python raises arg tuple related errors first, so we must
# check the length here
if min_positional_args == max_positional_args and not self.star_arg:
compare = '!='
else:
compare = '<'
code.putln('} else if (PyTuple_GET_SIZE(%s) %s %d) {' % (
Naming.args_cname, compare, min_positional_args))
code.put_goto(argtuple_error_label)
if self.num_required_kw_args:
# pure error case: keywords required but not passed
if max_positional_args > min_positional_args and not self.star_arg:
code.putln('} else if (PyTuple_GET_SIZE(%s) > %d) {' % (
Naming.args_cname, max_positional_args))
code.put_goto(argtuple_error_label)
code.putln('} else {')
for i, arg in enumerate(kw_only_args):
if not arg.default:
# required keyword-only argument missing
code.put('__Pyx_RaiseKeywordRequired("%s", *%s[%d]); ' % (
self.name.utf8encode(), Naming.pykwdlist_cname,
len(positional_args) + i))
code.putln(code.error_goto(self.pos))
break
elif min_positional_args == max_positional_args:
# parse the exact number of positional arguments from the
# args tuple
code.putln('} else {')
for i, arg in enumerate(positional_args):
item = "PyTuple_GET_ITEM(%s, %d)" % (Naming.args_cname, i)
self.generate_arg_assignment(arg, item, code)
else:
# parse the positional arguments from the variable length
# args tuple
code.putln('} else {')
code.putln('switch (PyTuple_GET_SIZE(%s)) {' % Naming.args_cname)
reversed_args = list(enumerate(positional_args))[::-1]
for i, arg in reversed_args:
if i >= min_positional_args-1:
if min_positional_args > 1:
code.putln('case %2d:' % (i+1)) # pure code beautification
else:
code.put('case %2d: ' % (i+1))
item = "PyTuple_GET_ITEM(%s, %d)" % (Naming.args_cname, i)
self.generate_arg_assignment(arg, item, code)
if not self.star_arg:
if min_positional_args == 0:
code.put('case 0: ')
code.putln('break;')
code.put('default: ')
code.put_goto(argtuple_error_label)
code.putln('}')
code.putln('}')
if code.label_used(argtuple_error_label):
code.put_goto(success_label)
code.put_label(argtuple_error_label)
code.put('__Pyx_RaiseArgtupleInvalid("%s", %d, %d, %d, PyTuple_GET_SIZE(%s)); ' % (
self.name.utf8encode(), has_fixed_positional_count,
min_positional_args, max_positional_args,
Naming.args_cname))
code.putln(code.error_goto(self.pos))
def generate_positional_args_check(self, max_positional_args,
has_fixed_pos_count, code):
# make sure supernumerous positional arguments do not run
# into keyword-only arguments and provide a helpful message
code.globalstate.use_utility_code(raise_argtuple_invalid_utility_code)
code.putln("if (unlikely(PyTuple_GET_SIZE(%s) > %d)) {" % (
Naming.args_cname, max_positional_args))
code.putln('__Pyx_RaiseArgtupleInvalid("%s", %d, 0, %d, PyTuple_GET_SIZE(%s));' % (
self.name.utf8encode(), has_fixed_pos_count,
max_positional_args, Naming.args_cname))
code.putln("return %s;" % self.error_value())
code.putln("}")
def generate_argument_conversion_code(self, code):
# Generate code to convert arguments from
# signature type to declared type, if needed.
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7