3 # Pyrex - Parse tree nodes
8 cython.declare(sys=object, os=object, time=object, copy=object,
9 Builtin=object, error=object, warning=object, Naming=object, PyrexTypes=object,
10 py_object_type=object, ModuleScope=object, LocalScope=object, ClosureScope=object, \
11 StructOrUnionScope=object, PyClassScope=object, CClassScope=object,
12 CppClassScope=object, UtilityCode=object, EncodedString=object,
13 absolute_path_length=cython.Py_ssize_t)
15 import sys, os, time, copy
18 from Errors import error, warning, InternalError
22 from PyrexTypes import py_object_type, error_type, CFuncType
23 from Symtab import ModuleScope, LocalScope, ClosureScope, \
24 StructOrUnionScope, PyClassScope, CClassScope, CppClassScope
25 from Cython.Utils import open_new_file, replace_suffix
26 from Code import UtilityCode
27 from StringEncoding import EncodedString, escape_byte_string, split_string_literal
32 absolute_path_length = 0
34 def relative_position(pos):
36 We embed the relative filename in the generated C file, since we
37 don't want to have to regnerate and compile all the source code
38 whenever the Python install directory moves (which could happen,
39 e.g,. when distributing binaries.)
42 a position tuple -- (absolute filename, line number column position)
50 global absolute_path_length
51 if absolute_path_length==0:
52 absolute_path_length = len(os.path.abspath(os.getcwd()))
53 return (pos[0].get_filenametable_entry()[absolute_path_length+1:], pos[1])
55 def embed_position(pos, docstring):
56 if not Options.embed_pos_in_docstring:
58 pos_line = u'File: %s (starting at line %s)' % relative_position(pos)
61 return EncodedString(pos_line)
63 # make sure we can encode the filename in the docstring encoding
64 # otherwise make the docstring a unicode string
65 encoding = docstring.encoding
66 if encoding is not None:
68 encoded_bytes = pos_line.encode(encoding)
69 except UnicodeEncodeError:
73 # reuse the string encoding of the original docstring
74 doc = EncodedString(pos_line)
76 doc = EncodedString(pos_line + u'\n' + docstring)
77 doc.encoding = encoding
81 from Code import CCodeWriter
82 from types import FunctionType
84 def write_func_call(func):
86 if len(args) > 1 and isinstance(args[1], CCodeWriter):
87 # here we annotate the code with this function call
88 # but only if new code is generated
90 marker = ' /* %s -> %s.%s %s */' % (
91 ' ' * code.call_level,
92 node.__class__.__name__,
95 pristine = code.buffer.stream.tell()
97 start = code.buffer.stream.tell()
99 res = func(*args, **kwds)
101 if start == code.buffer.stream.tell():
102 code.buffer.stream.seek(pristine)
104 marker = marker.replace('->', '<-')
108 return func(*args, **kwds)
111 class VerboseCodeWriter(type):
112 # Set this as a metaclass to trace function calls in code.
113 # This slows down code generation and makes much larger files.
114 def __new__(cls, name, bases, attrs):
116 for mname, m in attrs.items():
117 if isinstance(m, FunctionType):
118 attrs[mname] = write_func_call(m)
119 return super(VerboseCodeWriter, cls).__new__(cls, name, bases, attrs)
123 # pos (string, int, int) Source file position
124 # is_name boolean Is a NameNode
125 # is_literal boolean Is a ConstNode
127 if DebugFlags.debug_trace_code_generation:
128 __metaclass__ = VerboseCodeWriter
134 # All descandants should set child_attrs to a list of the attributes
135 # containing nodes considered "children" in the tree. Each such attribute
136 # can either contain a single node or a list of nodes. See Visitor.py.
139 def __init__(self, pos, **kw):
141 self.__dict__.update(kw)
143 gil_message = "Operation"
147 def gil_error(self, env=None):
148 error(self.pos, "%s not allowed without gil" % self.gil_message)
150 cpp_message = "Operation"
152 def cpp_check(self, env):
157 error(self.pos, "%s only allowed in c++" % self.cpp_message)
159 def clone_node(self):
160 """Clone the node. This is defined as a shallow copy, except for member lists
161 amongst the child attributes (from get_child_accessors) which are also
162 copied. Lists containing child nodes are thus seen as a way for the node
163 to hold multiple children directly; the list is not treated as a seperate
164 level in the tree."""
165 result = copy.copy(self)
166 for attrname in result.child_attrs:
167 value = getattr(result, attrname)
168 if isinstance(value, list):
169 setattr(result, attrname, [x for x in value])
174 # There are 4 phases of parse tree processing, applied in order to
175 # all the statements in a given scope-block:
177 # (0) analyse_control_flow
178 # Create the control flow tree into which state can be asserted and
181 # (1) analyse_declarations
182 # Make symbol table entries for all declarations at the current
183 # level, both explicit (def, cdef, etc.) and implicit (assignment
184 # to an otherwise undeclared name).
186 # (2) analyse_expressions
187 # Determine the result types of expressions and fill in the
188 # 'type' attribute of each ExprNode. Insert coercion nodes into the
189 # tree where needed to convert to and from Python objects.
190 # Allocate temporary locals for intermediate results. Fill
191 # in the 'result_code' attribute of each ExprNode with a C code
195 # Emit C code for all declarations, statements and expressions.
196 # Recursively applies the 3 processing phases to the bodies of
200 def analyse_control_flow(self, env):
203 def analyse_declarations(self, env):
206 def analyse_expressions(self, env):
207 raise InternalError("analyse_expressions not implemented for %s" % \
208 self.__class__.__name__)
210 def generate_code(self, code):
211 raise InternalError("generate_code not implemented for %s" % \
212 self.__class__.__name__)
214 def annotate(self, code):
215 # mro does the wrong thing
216 if isinstance(self, BlockNode):
217 self.body.annotate(code)
222 except AttributeError:
224 if not self.child_attrs:
227 for attr in self.child_attrs:
228 child = getattr(self, attr)
229 # Sometimes lists, sometimes nodes
232 elif isinstance(child, list):
234 pos = max(pos, c.end_pos())
236 pos = max(pos, child.end_pos())
240 def dump(self, level=0, filter_out=("pos",), cutoff=100, encountered=None):
242 return "<...nesting level cutoff...>"
243 if encountered is None:
245 if id(self) in encountered:
246 return "<%s (0x%x) -- already output>" % (self.__class__.__name__, id(self))
247 encountered.add(id(self))
249 def dump_child(x, level):
250 if isinstance(x, Node):
251 return x.dump(level, filter_out, cutoff-1, encountered)
252 elif isinstance(x, list):
253 return "[%s]" % ", ".join([dump_child(item, level) for item in x])
258 attrs = [(key, value) for key, value in self.__dict__.items() if key not in filter_out]
260 return "<%s (0x%x)>" % (self.__class__.__name__, id(self))
263 res = "<%s (0x%x)\n" % (self.__class__.__name__, id(self))
264 for key, value in attrs:
265 res += "%s %s: %s\n" % (indent, key, dump_child(value, level + 1))
266 res += "%s>" % indent
269 class CompilerDirectivesNode(Node):
271 Sets compiler directives for the children nodes
273 # directives {string:value} A dictionary holding the right value for
274 # *all* possible directives.
276 child_attrs = ["body"]
278 def analyse_control_flow(self, env):
280 env.directives = self.directives
281 self.body.analyse_control_flow(env)
284 def analyse_declarations(self, env):
286 env.directives = self.directives
287 self.body.analyse_declarations(env)
290 def analyse_expressions(self, env):
292 env.directives = self.directives
293 self.body.analyse_expressions(env)
296 def generate_function_definitions(self, env, code):
297 env_old = env.directives
298 code_old = code.globalstate.directives
299 code.globalstate.directives = self.directives
300 self.body.generate_function_definitions(env, code)
301 env.directives = env_old
302 code.globalstate.directives = code_old
304 def generate_execution_code(self, code):
305 old = code.globalstate.directives
306 code.globalstate.directives = self.directives
307 self.body.generate_execution_code(code)
308 code.globalstate.directives = old
310 def annotate(self, code):
311 old = code.globalstate.directives
312 code.globalstate.directives = self.directives
313 self.body.annotate(code)
314 code.globalstate.directives = old
316 class BlockNode(object):
317 # Mixin class for nodes representing a declaration block.
319 def generate_cached_builtins_decls(self, env, code):
320 entries = env.global_scope().undeclared_cached_builtins
321 for entry in entries:
322 code.globalstate.add_cached_builtin_decl(entry)
325 def generate_lambda_definitions(self, env, code):
326 for node in env.lambda_defs:
327 node.generate_function_definitions(env, code)
329 class StatListNode(Node):
330 # stats a list of StatNode
332 child_attrs = ["stats"]
334 def create_analysed(pos, env, *args, **kw):
335 node = StatListNode(pos, *args, **kw)
336 return node # No node-specific analysis necesarry
337 create_analysed = staticmethod(create_analysed)
339 def analyse_control_flow(self, env):
340 for stat in self.stats:
341 stat.analyse_control_flow(env)
343 def analyse_declarations(self, env):
344 #print "StatListNode.analyse_declarations" ###
345 for stat in self.stats:
346 stat.analyse_declarations(env)
348 def analyse_expressions(self, env):
349 #print "StatListNode.analyse_expressions" ###
350 for stat in self.stats:
351 stat.analyse_expressions(env)
353 def generate_function_definitions(self, env, code):
354 #print "StatListNode.generate_function_definitions" ###
355 for stat in self.stats:
356 stat.generate_function_definitions(env, code)
358 def generate_execution_code(self, code):
359 #print "StatListNode.generate_execution_code" ###
360 for stat in self.stats:
361 code.mark_pos(stat.pos)
362 stat.generate_execution_code(code)
364 def annotate(self, code):
365 for stat in self.stats:
369 class StatNode(Node):
371 # Code generation for statements is split into the following subphases:
373 # (1) generate_function_definitions
374 # Emit C code for the definitions of any structs,
375 # unions, enums and functions defined in the current
378 # (2) generate_execution_code
379 # Emit C code for executable statements.
382 def generate_function_definitions(self, env, code):
385 def generate_execution_code(self, code):
386 raise InternalError("generate_execution_code not implemented for %s" % \
387 self.__class__.__name__)
390 class CDefExternNode(StatNode):
391 # include_file string or None
394 child_attrs = ["body"]
396 def analyse_declarations(self, env):
397 if self.include_file:
398 env.add_include_file(self.include_file)
399 old_cinclude_flag = env.in_cinclude
401 self.body.analyse_declarations(env)
402 env.in_cinclude = old_cinclude_flag
404 def analyse_expressions(self, env):
407 def generate_execution_code(self, code):
410 def annotate(self, code):
411 self.body.annotate(code)
414 class CDeclaratorNode(Node):
415 # Part of a C declaration.
417 # Processing during analyse_declarations phase:
420 # Returns (name, type) pair where name is the
421 # CNameDeclaratorNode of the name being declared
422 # and type is the type it is being declared as.
424 # calling_convention string Calling convention of CFuncDeclaratorNode
425 # for which this is a base
429 calling_convention = ""
432 class CNameDeclaratorNode(CDeclaratorNode):
433 # name string The Pyrex name being declared
434 # cname string or None C name, if specified
435 # default ExprNode or None the value assigned on declaration
437 child_attrs = ['default']
441 def analyse(self, base_type, env, nonempty = 0):
442 if nonempty and self.name == '':
443 # May have mistaken the name for the type.
444 if base_type.is_ptr or base_type.is_array or base_type.is_buffer:
445 error(self.pos, "Missing argument name")
446 elif base_type.is_void:
447 error(self.pos, "Use spam() rather than spam(void) to declare a function with no arguments.")
449 self.name = base_type.declaration_code("", for_display=1, pyrex=1)
450 base_type = py_object_type
451 self.type = base_type
452 return self, base_type
454 class CPtrDeclaratorNode(CDeclaratorNode):
455 # base CDeclaratorNode
457 child_attrs = ["base"]
459 def analyse(self, base_type, env, nonempty = 0):
460 if base_type.is_pyobject:
462 "Pointer base type cannot be a Python object")
463 ptr_type = PyrexTypes.c_ptr_type(base_type)
464 return self.base.analyse(ptr_type, env, nonempty = nonempty)
466 class CReferenceDeclaratorNode(CDeclaratorNode):
467 # base CDeclaratorNode
469 child_attrs = ["base"]
471 def analyse(self, base_type, env, nonempty = 0):
472 if base_type.is_pyobject:
474 "Reference base type cannot be a Python object")
475 ref_type = PyrexTypes.c_ref_type(base_type)
476 return self.base.analyse(ref_type, env, nonempty = nonempty)
478 class CArrayDeclaratorNode(CDeclaratorNode):
479 # base CDeclaratorNode
482 child_attrs = ["base", "dimension"]
484 def analyse(self, base_type, env, nonempty = 0):
485 if base_type.is_cpp_class:
486 from ExprNodes import TupleNode
487 if isinstance(self.dimension, TupleNode):
488 args = self.dimension.args
490 args = self.dimension,
491 values = [v.analyse_as_type(env) for v in args]
493 ix = values.index(None)
494 error(args[ix].pos, "Template parameter not a type.")
496 base_type = base_type.specialize_here(self.pos, values)
497 return self.base.analyse(base_type, env, nonempty = nonempty)
499 self.dimension.analyse_const_expression(env)
500 if not self.dimension.type.is_int:
501 error(self.dimension.pos, "Array dimension not integer")
502 size = self.dimension.get_constant_c_result_code()
511 if not base_type.is_complete():
513 "Array element type '%s' is incomplete" % base_type)
514 if base_type.is_pyobject:
516 "Array element cannot be a Python object")
517 if base_type.is_cfunction:
519 "Array element cannot be a function")
520 array_type = PyrexTypes.c_array_type(base_type, size)
521 return self.base.analyse(array_type, env, nonempty = nonempty)
524 class CFuncDeclaratorNode(CDeclaratorNode):
525 # base CDeclaratorNode
526 # args [CArgDeclNode]
527 # has_varargs boolean
528 # exception_value ConstNode
529 # exception_check boolean True if PyErr_Occurred check needed
530 # nogil boolean Can be called without gil
531 # with_gil boolean Acquire gil around function body
533 child_attrs = ["base", "args", "exception_value"]
536 optional_arg_count = 0
538 def analyse(self, return_type, env, nonempty = 0):
542 for i, arg_node in enumerate(self.args):
543 name_declarator, type = arg_node.analyse(env, nonempty = nonempty,
544 is_self_arg = (i == 0 and env.is_c_class_scope))
545 name = name_declarator.name
546 if name_declarator.cname:
548 "Function argument cannot have C name specification")
549 # Turn *[] argument into **
551 type = PyrexTypes.c_ptr_type(type.base_type)
552 # Catch attempted C-style func(void) decl
554 error(arg_node.pos, "Use spam() rather than spam(void) to declare a function with no arguments.")
555 func_type_args.append(
556 PyrexTypes.CFuncTypeArg(name, type, arg_node.pos))
558 self.optional_arg_count += 1
559 elif self.optional_arg_count:
560 error(self.pos, "Non-default argument follows default argument")
562 if self.optional_arg_count:
563 scope = StructOrUnionScope()
564 arg_count_member = '%sn' % Naming.pyrex_prefix
565 scope.declare_var(arg_count_member, PyrexTypes.c_int_type, self.pos)
566 for arg in func_type_args[len(func_type_args)-self.optional_arg_count:]:
567 scope.declare_var(arg.name, arg.type, arg.pos, allow_pyobject = 1)
568 struct_cname = env.mangle(Naming.opt_arg_prefix, self.base.name)
569 self.op_args_struct = env.global_scope().declare_struct_or_union(name = struct_cname,
574 cname = struct_cname)
575 self.op_args_struct.defined_in_pxd = 1
576 self.op_args_struct.used = 1
580 if self.exception_check == '+':
581 env.add_include_file('stdexcept')
582 if return_type.is_pyobject \
583 and (self.exception_value or self.exception_check) \
584 and self.exception_check != '+':
586 "Exception clause not allowed for function returning Python object")
588 if self.exception_value:
589 self.exception_value.analyse_const_expression(env)
590 if self.exception_check == '+':
591 self.exception_value.analyse_types(env)
592 exc_val_type = self.exception_value.type
593 if not exc_val_type.is_error and \
594 not exc_val_type.is_pyobject and \
595 not (exc_val_type.is_cfunction and not exc_val_type.return_type.is_pyobject and len(exc_val_type.args)==0):
596 error(self.exception_value.pos,
597 "Exception value must be a Python exception or cdef function with no arguments.")
598 exc_val = self.exception_value
600 self.exception_value = self.exception_value.coerce_to(return_type, env)
601 if self.exception_value.analyse_const_expression(env):
602 exc_val = self.exception_value.get_constant_c_result_code()
604 raise InternalError("get_constant_c_result_code not implemented for %s" %
605 self.exception_value.__class__.__name__)
606 if not return_type.assignable_from(self.exception_value.type):
607 error(self.exception_value.pos,
608 "Exception value incompatible with function return type")
609 exc_check = self.exception_check
610 if return_type.is_array:
612 "Function cannot return an array")
613 if return_type.is_cfunction:
615 "Function cannot return a function")
616 func_type = PyrexTypes.CFuncType(
617 return_type, func_type_args, self.has_varargs,
618 optional_arg_count = self.optional_arg_count,
619 exception_value = exc_val, exception_check = exc_check,
620 calling_convention = self.base.calling_convention,
621 nogil = self.nogil, with_gil = self.with_gil, is_overridable = self.overridable)
622 if self.optional_arg_count:
623 func_type.op_arg_struct = PyrexTypes.c_ptr_type(self.op_args_struct.type)
624 callspec = env.directives['callspec']
626 current = func_type.calling_convention
627 if current and current != callspec:
628 error(self.pos, "cannot have both '%s' and '%s' "
629 "calling conventions" % (current, callspec))
630 func_type.calling_convention = callspec
631 return self.base.analyse(func_type, env)
634 class CArgDeclNode(Node):
635 # Item in a function declaration argument list.
637 # base_type CBaseTypeNode
638 # declarator CDeclaratorNode
639 # not_none boolean Tagged with 'not None'
640 # or_none boolean Tagged with 'or None'
641 # accept_none boolean Resolved boolean for not_none/or_none
642 # default ExprNode or None
643 # default_value PyObjectConst constant for default value
644 # annotation ExprNode or None Py3 function arg annotation
645 # is_self_arg boolean Is the "self" arg of an extension type method
646 # is_type_arg boolean Is the "class" arg of an extension type classmethod
647 # is_kw_only boolean Is a keyword-only argument
649 child_attrs = ["base_type", "declarator", "default"]
655 name_declarator = None
659 def analyse(self, env, nonempty = 0, is_self_arg = False):
661 self.base_type.is_self_arg = self.is_self_arg = True
662 if self.type is None:
663 # The parser may missinterpret names as types...
665 if isinstance(self.declarator, CNameDeclaratorNode) and self.declarator.name == '':
667 self.declarator.name = self.base_type.name
668 self.base_type.name = None
669 self.base_type.is_basic_c_type = False
672 could_be_name = False
673 base_type = self.base_type.analyse(env, could_be_name = could_be_name)
674 if hasattr(self.base_type, 'arg_name') and self.base_type.arg_name:
675 self.declarator.name = self.base_type.arg_name
676 # The parser is unable to resolve the ambiguity of [] as part of the
677 # type (e.g. in buffers) or empty declarator (as with arrays).
678 # This is only arises for empty multi-dimensional arrays.
679 if (base_type.is_array
680 and isinstance(self.base_type, TemplatedTypeNode)
681 and isinstance(self.declarator, CArrayDeclaratorNode)):
682 declarator = self.declarator
683 while isinstance(declarator.base, CArrayDeclaratorNode):
684 declarator = declarator.base
685 declarator.base = self.base_type.array_declarator
686 base_type = base_type.base_type
687 return self.declarator.analyse(base_type, env, nonempty = nonempty)
689 return self.name_declarator, self.type
691 def calculate_default_value_code(self, code):
692 if self.default_value is None:
694 if self.default.is_literal:
695 # will not output any code, just assign the result_code
696 self.default.generate_evaluation_code(code)
697 return self.type.cast_code(self.default.result())
698 self.default_value = code.get_argument_default_const(self.type)
699 return self.default_value
701 def annotate(self, code):
703 self.default.annotate(code)
706 class CBaseTypeNode(Node):
707 # Abstract base class for C base type nodes.
709 # Processing during analyse_declarations phase:
716 def analyse_as_type(self, env):
717 return self.analyse(env)
719 class CAnalysedBaseTypeNode(Node):
724 def analyse(self, env, could_be_name = False):
727 class CSimpleBaseTypeNode(CBaseTypeNode):
729 # module_path [string] Qualifying name components
730 # is_basic_c_type boolean
734 # is_self_arg boolean Is self argument of C method
735 # ##is_type_arg boolean Is type argument of class method
738 arg_name = None # in case the argument name was interpreted as a type
740 def analyse(self, env, could_be_name = False):
741 # Return type descriptor.
742 #print "CSimpleBaseTypeNode.analyse: is_self_arg =", self.is_self_arg ###
744 if self.is_basic_c_type:
745 type = PyrexTypes.simple_c_type(self.signed, self.longness, self.name)
747 error(self.pos, "Unrecognised type modifier combination")
748 elif self.name == "object" and not self.module_path:
749 type = py_object_type
750 elif self.name is None:
751 if self.is_self_arg and env.is_c_class_scope:
752 #print "CSimpleBaseTypeNode.analyse: defaulting to parent type" ###
753 type = env.parent_type
754 ## elif self.is_type_arg and env.is_c_class_scope:
755 ## type = Builtin.type_type
757 type = py_object_type
760 scope = env.find_imported_module(self.module_path, self.pos)
764 if scope.is_c_class_scope:
765 scope = scope.global_scope()
766 entry = scope.lookup(self.name)
767 if entry and entry.is_type:
770 if self.is_self_arg and env.is_c_class_scope:
771 type = env.parent_type
772 ## elif self.is_type_arg and env.is_c_class_scope:
773 ## type = Builtin.type_type
775 type = py_object_type
776 self.arg_name = self.name
779 if not self.name in self.templates:
780 error(self.pos, "'%s' is not a type identifier" % self.name)
781 type = PyrexTypes.TemplatePlaceholderType(self.name)
783 error(self.pos, "'%s' is not a type identifier" % self.name)
785 if not type.is_numeric or type.is_complex:
786 error(self.pos, "can only complexify c numeric types")
787 type = PyrexTypes.CComplexType(type)
788 type.create_declaration_utility_code(env)
792 return PyrexTypes.error_type
794 class CNestedBaseTypeNode(CBaseTypeNode):
795 # For C++ classes that live inside other C++ classes.
798 # base_type CBaseTypeNode
800 child_attrs = ['base_type']
802 def analyse(self, env, could_be_name = None):
803 base_type = self.base_type.analyse(env)
804 if base_type is PyrexTypes.error_type:
805 return PyrexTypes.error_type
806 if not base_type.is_cpp_class:
807 error(self.pos, "'%s' is not a valid type scope" % base_type)
808 return PyrexTypes.error_type
809 type_entry = base_type.scope.lookup_here(self.name)
810 if not type_entry or not type_entry.is_type:
811 error(self.pos, "'%s.%s' is not a type identifier" % (base_type, self.name))
812 return PyrexTypes.error_type
813 return type_entry.type
815 class TemplatedTypeNode(CBaseTypeNode):
817 # positional_args [ExprNode] List of positional arguments
818 # keyword_args DictNode Keyword arguments
819 # base_type_node CBaseTypeNode
822 # type PyrexTypes.BufferType or PyrexTypes.CppClassType ...containing the right options
825 child_attrs = ["base_type_node", "positional_args",
826 "keyword_args", "dtype_node"]
832 def analyse(self, env, could_be_name = False, base_type = None):
833 if base_type is None:
834 base_type = self.base_type_node.analyse(env)
835 if base_type.is_error: return base_type
837 if base_type.is_cpp_class:
839 if self.keyword_args and self.keyword_args.key_value_pairs:
840 error(self.pos, "c++ templates cannot take keyword arguments");
841 self.type = PyrexTypes.error_type
844 for template_node in self.positional_args:
845 type = template_node.analyse_as_type(env)
847 error(template_node.pos, "unknown type in template argument")
849 template_types.append(type)
850 self.type = base_type.specialize_here(self.pos, template_types)
852 elif base_type.is_pyobject:
856 options = Buffer.analyse_buffer_options(
859 self.positional_args,
861 base_type.buffer_defaults)
863 if sys.version_info[0] < 3:
864 # Py 2.x enforces byte strings as keyword arguments ...
865 options = dict([ (name.encode('ASCII'), value)
866 for name, value in options.items() ])
868 self.type = PyrexTypes.BufferType(base_type, **options)
872 empty_declarator = CNameDeclaratorNode(self.pos, name="", cname=None)
873 if len(self.positional_args) > 1 or self.keyword_args.key_value_pairs:
874 error(self.pos, "invalid array declaration")
875 self.type = PyrexTypes.error_type
877 # It would be nice to merge this class with CArrayDeclaratorNode,
878 # but arrays are part of the declaration, not the type...
879 if not self.positional_args:
882 dimension = self.positional_args[0]
883 self.array_declarator = CArrayDeclaratorNode(self.pos,
884 base = empty_declarator,
885 dimension = dimension)
886 self.type = self.array_declarator.analyse(base_type, env)[1]
890 class CComplexBaseTypeNode(CBaseTypeNode):
891 # base_type CBaseTypeNode
892 # declarator CDeclaratorNode
894 child_attrs = ["base_type", "declarator"]
896 def analyse(self, env, could_be_name = False):
897 base = self.base_type.analyse(env, could_be_name)
898 _, type = self.declarator.analyse(base, env)
902 class CVarDefNode(StatNode):
903 # C variable definition or forward/extern function declaration.
905 # visibility 'private' or 'public' or 'extern'
906 # base_type CBaseTypeNode
907 # declarators [CDeclaratorNode]
911 # decorators [cython.locals(...)] or None
912 # directive_locals { string : NameNode } locals defined by cython.locals(...)
914 child_attrs = ["base_type", "declarators"]
917 directive_locals = {}
919 def analyse_declarations(self, env, dest_scope = None):
922 self.dest_scope = dest_scope
923 base_type = self.base_type.analyse(env)
925 # If the field is an external typedef, we cannot be sure about the type,
926 # so do conversion ourself rather than rely on the CPython mechanism (through
927 # a property; made in AnalyseDeclarationsTransform).
928 if (dest_scope.is_c_class_scope
929 and self.visibility in ('public', 'readonly')):
932 need_property = False
933 visibility = self.visibility
935 for declarator in self.declarators:
936 name_declarator, type = declarator.analyse(base_type, env)
937 if not type.is_complete():
938 if not (self.visibility == 'extern' and type.is_array):
939 error(declarator.pos,
940 "Variable type '%s' is incomplete" % type)
941 if self.visibility == 'extern' and type.is_pyobject:
942 error(declarator.pos,
943 "Python object cannot be declared extern")
944 name = name_declarator.name
945 cname = name_declarator.cname
947 error(declarator.pos, "Missing name in declaration.")
949 if type.is_cfunction:
950 entry = dest_scope.declare_cfunction(name, type, declarator.pos,
951 cname = cname, visibility = self.visibility, in_pxd = self.in_pxd,
953 if entry is not None:
954 entry.directive_locals = self.directive_locals
956 if self.directive_locals:
957 error(self.pos, "Decorators can only be followed by functions")
958 if self.in_pxd and self.visibility != 'extern':
960 "Only 'extern' C variable declaration allowed in .pxd file")
961 entry = dest_scope.declare_var(name, type, declarator.pos,
962 cname = cname, visibility = visibility, is_cdef = 1)
963 entry.needs_property = need_property
966 class CStructOrUnionDefNode(StatNode):
968 # cname string or None
969 # kind "struct" or "union"
970 # typedef_flag boolean
971 # visibility "public" or "private"
973 # attributes [CVarDefNode] or None
977 child_attrs = ["attributes"]
979 def analyse_declarations(self, env):
981 if self.visibility == 'extern' and self.packed:
982 error(self.pos, "Cannot declare extern struct as 'packed'")
983 if self.attributes is not None:
984 scope = StructOrUnionScope(self.name)
985 self.entry = env.declare_struct_or_union(
986 self.name, self.kind, scope, self.typedef_flag, self.pos,
987 self.cname, visibility = self.visibility, packed = self.packed)
988 if self.attributes is not None:
989 if self.in_pxd and not env.in_cinclude:
990 self.entry.defined_in_pxd = 1
991 for attr in self.attributes:
992 attr.analyse_declarations(env, scope)
993 if self.visibility != 'extern':
994 need_typedef_indirection = False
995 for attr in scope.var_entries:
998 type = type.base_type
999 if type == self.entry.type:
1000 error(attr.pos, "Struct cannot contain itself as a member.")
1001 if self.typedef_flag:
1003 type = type.base_type
1004 if type == self.entry.type:
1005 need_typedef_indirection = True
1006 if need_typedef_indirection:
1007 # C can't handle typedef structs that refer to themselves.
1008 struct_entry = self.entry
1009 self.entry = env.declare_typedef(
1010 self.name, struct_entry.type, self.pos,
1011 cname = self.cname, visibility='ignore')
1012 struct_entry.type.typedef_flag = False
1013 # FIXME: this might be considered a hack ;-)
1014 struct_entry.cname = struct_entry.type.cname = \
1015 '_' + self.entry.type.typedef_cname
1017 def analyse_expressions(self, env):
1020 def generate_execution_code(self, code):
1024 class CppClassNode(CStructOrUnionDefNode):
1027 # cname string or None
1028 # visibility "extern"
1030 # attributes [CVarDefNode] or None
1032 # base_classes [string]
1033 # templates [string] or None
1035 def analyse_declarations(self, env):
1037 if self.attributes is not None:
1038 scope = CppClassScope(self.name, env)
1039 base_class_types = []
1040 for base_class_name in self.base_classes:
1041 base_class_entry = env.lookup(base_class_name)
1042 if base_class_entry is None:
1043 error(self.pos, "'%s' not found" % base_class_name)
1044 elif not base_class_entry.is_type or not base_class_entry.type.is_cpp_class:
1045 error(self.pos, "'%s' is not a cpp class type" % base_class_name)
1047 base_class_types.append(base_class_entry.type)
1048 if self.templates is None:
1049 template_types = None
1051 template_types = [PyrexTypes.TemplatePlaceholderType(template_name) for template_name in self.templates]
1052 self.entry = env.declare_cpp_class(
1053 self.name, scope, self.pos,
1054 self.cname, base_class_types, visibility = self.visibility, templates = template_types)
1055 self.entry.is_cpp_class = 1
1056 if self.attributes is not None:
1057 if self.in_pxd and not env.in_cinclude:
1058 self.entry.defined_in_pxd = 1
1059 for attr in self.attributes:
1060 attr.analyse_declarations(scope)
1062 class CEnumDefNode(StatNode):
1063 # name string or None
1064 # cname string or None
1065 # items [CEnumDefItemNode]
1066 # typedef_flag boolean
1067 # visibility "public" or "private"
1071 child_attrs = ["items"]
1073 def analyse_declarations(self, env):
1074 self.entry = env.declare_enum(self.name, self.pos,
1075 cname = self.cname, typedef_flag = self.typedef_flag,
1076 visibility = self.visibility)
1077 if self.items is not None:
1078 if self.in_pxd and not env.in_cinclude:
1079 self.entry.defined_in_pxd = 1
1080 for item in self.items:
1081 item.analyse_declarations(env, self.entry)
1083 def analyse_expressions(self, env):
1086 def generate_execution_code(self, code):
1087 if self.visibility == 'public':
1088 temp = code.funcstate.allocate_temp(PyrexTypes.py_object_type, manage_ref=True)
1089 for item in self.entry.enum_values:
1090 code.putln("%s = PyInt_FromLong(%s); %s" % (
1093 code.error_goto_if_null(temp, item.pos)))
1094 code.put_gotref(temp)
1095 code.putln('if (__Pyx_SetAttrString(%s, "%s", %s) < 0) %s' % (
1096 Naming.module_cname,
1099 code.error_goto(item.pos)))
1100 code.put_decref_clear(temp, PyrexTypes.py_object_type)
1101 code.funcstate.release_temp(temp)
1104 class CEnumDefItemNode(StatNode):
1106 # cname string or None
1107 # value ExprNode or None
1109 child_attrs = ["value"]
1111 def analyse_declarations(self, env, enum_entry):
1113 self.value.analyse_const_expression(env)
1114 if not self.value.type.is_int:
1115 self.value = self.value.coerce_to(PyrexTypes.c_int_type, env)
1116 self.value.analyse_const_expression(env)
1117 entry = env.declare_const(self.name, enum_entry.type,
1118 self.value, self.pos, cname = self.cname,
1119 visibility = enum_entry.visibility)
1120 enum_entry.enum_values.append(entry)
1123 class CTypeDefNode(StatNode):
1124 # base_type CBaseTypeNode
1125 # declarator CDeclaratorNode
1126 # visibility "public" or "private"
1129 child_attrs = ["base_type", "declarator"]
1131 def analyse_declarations(self, env):
1132 base = self.base_type.analyse(env)
1133 name_declarator, type = self.declarator.analyse(base, env)
1134 name = name_declarator.name
1135 cname = name_declarator.cname
1136 entry = env.declare_typedef(name, type, self.pos,
1137 cname = cname, visibility = self.visibility)
1138 if self.in_pxd and not env.in_cinclude:
1139 entry.defined_in_pxd = 1
1141 def analyse_expressions(self, env):
1143 def generate_execution_code(self, code):
1147 class FuncDefNode(StatNode, BlockNode):
1148 # Base class for function definition nodes.
1150 # return_type PyrexType
1151 # #filename string C name of filename string const
1152 # entry Symtab.Entry
1153 # needs_closure boolean Whether or not this function has inner functions/classes/yield
1154 # needs_outer_scope boolean Whether or not this function requires outer scope
1155 # directive_locals { string : NameNode } locals defined by cython.locals(...)
1159 needs_closure = False
1160 needs_outer_scope = False
1163 def analyse_default_values(self, env):
1164 genv = env.global_scope()
1166 for arg in self.args:
1170 arg.default.analyse_types(env)
1171 arg.default = arg.default.coerce_to(arg.type, genv)
1174 "This argument cannot have a default value")
1179 error(arg.pos, "Non-default argument following default argument")
1181 def need_gil_acquisition(self, lenv):
1184 def create_local_scope(self, env):
1186 while genv.is_py_class_scope or genv.is_c_class_scope:
1187 genv = genv.outer_scope
1188 if self.needs_closure:
1189 lenv = ClosureScope(name=self.entry.name,
1191 scope_name=self.entry.cname)
1193 lenv = LocalScope(name=self.entry.name,
1196 lenv.return_type = self.return_type
1197 type = self.entry.type
1198 if type.is_cfunction:
1199 lenv.nogil = type.nogil and not type.with_gil
1200 self.local_scope = lenv
1201 lenv.directives = env.directives
1204 def generate_function_definitions(self, env, code):
1207 lenv = self.local_scope
1208 if lenv.is_closure_scope and not lenv.is_passthrough:
1209 outer_scope_cname = "%s->%s" % (Naming.cur_scope_cname,
1210 Naming.outer_scope_cname)
1212 outer_scope_cname = Naming.outer_scope_cname
1213 lenv.mangle_closure_cnames(outer_scope_cname)
1214 # Generate closure function definitions
1215 self.body.generate_function_definitions(lenv, code)
1216 # generate lambda function definitions
1217 self.generate_lambda_definitions(lenv, code)
1219 is_getbuffer_slot = (self.entry.name == "__getbuffer__" and
1220 self.entry.scope.is_c_class_scope)
1221 is_releasebuffer_slot = (self.entry.name == "__releasebuffer__" and
1222 self.entry.scope.is_c_class_scope)
1223 is_buffer_slot = is_getbuffer_slot or is_releasebuffer_slot
1225 if 'cython_unused' not in self.modifiers:
1226 self.modifiers = self.modifiers + ['cython_unused']
1228 preprocessor_guard = None
1229 if self.entry.is_special and not is_buffer_slot:
1230 slot = TypeSlots.method_name_to_slot.get(self.entry.name)
1232 preprocessor_guard = slot.preprocessor_guard_code()
1233 if (self.entry.name == '__long__' and
1234 not self.entry.scope.lookup_here('__int__')):
1235 preprocessor_guard = None
1237 profile = code.globalstate.directives['profile']
1240 error(self.pos, "Cannot profile nogil function.")
1241 code.globalstate.use_utility_code(profile_utility_code)
1243 # Generate C code for header and body of function
1244 code.enter_cfunc_scope()
1245 code.return_from_error_cleanup_label = code.new_label()
1247 # ----- Top-level constants used by this function
1248 code.mark_pos(self.pos)
1249 self.generate_cached_builtins_decls(lenv, code)
1250 # ----- Function header
1253 if preprocessor_guard:
1254 code.putln(preprocessor_guard)
1256 with_pymethdef = self.needs_assignment_synthesis(env, code)
1258 self.py_func.generate_function_header(code,
1259 with_pymethdef = with_pymethdef,
1261 self.generate_function_header(code,
1262 with_pymethdef = with_pymethdef)
1263 # ----- Local variable declarations
1264 # Find function scope
1266 while cenv.is_py_class_scope or cenv.is_c_class_scope:
1267 cenv = cenv.outer_scope
1268 if self.needs_closure:
1269 code.put(lenv.scope_class.type.declaration_code(Naming.cur_scope_cname))
1271 elif self.needs_outer_scope:
1272 if lenv.is_passthrough:
1273 code.put(lenv.scope_class.type.declaration_code(Naming.cur_scope_cname))
1275 code.put(cenv.scope_class.type.declaration_code(Naming.outer_scope_cname))
1277 self.generate_argument_declarations(lenv, code)
1278 for entry in lenv.var_entries:
1279 if not entry.in_closure:
1280 code.put_var_declaration(entry)
1282 if not self.return_type.is_void:
1283 if self.return_type.is_pyobject:
1287 (self.return_type.declaration_code(Naming.retval_cname),
1289 tempvardecl_code = code.insertion_point()
1290 self.generate_keyword_list(code)
1292 code.put_trace_declarations()
1293 # ----- Extern library function declarations
1294 lenv.generate_library_function_declarations(code)
1295 # ----- GIL acquisition
1296 acquire_gil = self.acquire_gil
1298 env.use_utility_code(force_init_threads_utility_code)
1299 code.putln("#ifdef WITH_THREAD")
1300 code.putln("PyGILState_STATE _save = PyGILState_Ensure();")
1301 code.putln("#endif")
1302 # ----- set up refnanny
1304 code.put_setup_refcount_context(self.entry.name)
1305 # ----- Automatic lead-ins for certain special functions
1306 if is_getbuffer_slot:
1307 self.getbuffer_init(code)
1308 # ----- Create closure scope object
1309 if self.needs_closure:
1310 code.putln("%s = (%s)%s->tp_new(%s, %s, NULL);" % (
1311 Naming.cur_scope_cname,
1312 lenv.scope_class.type.declaration_code(''),
1313 lenv.scope_class.type.typeptr_cname,
1314 lenv.scope_class.type.typeptr_cname,
1315 Naming.empty_tuple))
1316 code.putln("if (unlikely(!%s)) {" % Naming.cur_scope_cname)
1317 if is_getbuffer_slot:
1318 self.getbuffer_error_cleanup(code)
1320 code.put_finish_refcount_context()
1321 # FIXME: what if the error return value is a Python value?
1322 code.putln("return %s;" % self.error_value())
1324 code.put_gotref(Naming.cur_scope_cname)
1325 # Note that it is unsafe to decref the scope at this point.
1326 if self.needs_outer_scope:
1327 code.putln("%s = (%s)%s;" % (
1329 cenv.scope_class.type.declaration_code(''),
1331 if lenv.is_passthrough:
1332 code.putln("%s = %s;" % (Naming.cur_scope_cname, outer_scope_cname));
1333 elif self.needs_closure:
1334 # inner closures own a reference to their outer parent
1335 code.put_incref(outer_scope_cname, cenv.scope_class.type)
1336 code.put_giveref(outer_scope_cname)
1337 # ----- Trace function call
1339 # this looks a bit late, but if we don't get here due to a
1340 # fatal error before hand, it's not really worth tracing
1341 code.put_trace_call(self.entry.name, self.pos)
1342 # ----- Fetch arguments
1343 self.generate_argument_parsing_code(env, code)
1344 # If an argument is assigned to in the body, we must
1345 # incref it to properly keep track of refcounts.
1346 for entry in lenv.arg_entries:
1347 if entry.type.is_pyobject:
1348 if entry.assignments and not entry.in_closure:
1349 code.put_var_incref(entry)
1350 # ----- Initialise local variables
1351 for entry in lenv.var_entries:
1352 if entry.type.is_pyobject and entry.init_to_none and entry.used:
1353 code.put_init_var_to_py_none(entry)
1354 # ----- Initialise local buffer auxiliary variables
1355 for entry in lenv.var_entries + lenv.arg_entries:
1356 if entry.type.is_buffer and entry.buffer_aux.buffer_info_var.used:
1357 code.putln("%s.buf = NULL;" %
1358 entry.buffer_aux.buffer_info_var.cname)
1359 # ----- Check and convert arguments
1360 self.generate_argument_type_tests(code)
1361 # ----- Acquire buffer arguments
1362 for entry in lenv.arg_entries:
1363 if entry.type.is_buffer:
1364 Buffer.put_acquire_arg_buffer(entry, code, self.pos)
1366 # -------------------------
1367 # ----- Function body -----
1368 # -------------------------
1369 self.body.generate_execution_code(code)
1371 # ----- Default return value
1373 if self.return_type.is_pyobject:
1374 #if self.return_type.is_extension_type:
1375 # lhs = "(PyObject *)%s" % Naming.retval_cname
1377 lhs = Naming.retval_cname
1378 code.put_init_to_py_none(lhs, self.return_type)
1380 val = self.return_type.default_value
1382 code.putln("%s = %s;" % (Naming.retval_cname, val))
1383 # ----- Error cleanup
1384 if code.error_label in code.labels_used:
1385 code.put_goto(code.return_label)
1386 code.put_label(code.error_label)
1387 for cname, type in code.funcstate.all_managed_temps():
1388 code.put_xdecref(cname, type)
1390 # Clean up buffers -- this calls a Python function
1391 # so need to save and restore error state
1392 buffers_present = len(lenv.buffer_entries) > 0
1394 code.globalstate.use_utility_code(restore_exception_utility_code)
1395 code.putln("{ PyObject *__pyx_type, *__pyx_value, *__pyx_tb;")
1396 code.putln("__Pyx_ErrFetch(&__pyx_type, &__pyx_value, &__pyx_tb);")
1397 for entry in lenv.buffer_entries:
1398 Buffer.put_release_buffer_code(code, entry)
1399 #code.putln("%s = 0;" % entry.cname)
1400 code.putln("__Pyx_ErrRestore(__pyx_type, __pyx_value, __pyx_tb);}")
1402 err_val = self.error_value()
1403 exc_check = self.caller_will_check_exceptions()
1404 if err_val is not None or exc_check:
1405 # TODO: Fix exception tracing (though currently unused by cProfile).
1406 # code.globalstate.use_utility_code(get_exception_tuple_utility_code)
1407 # code.put_trace_exception()
1408 code.putln('__Pyx_AddTraceback("%s");' % self.entry.qualified_name)
1410 warning(self.entry.pos, "Unraisable exception in function '%s'." \
1411 % self.entry.qualified_name, 0)
1413 '__Pyx_WriteUnraisable("%s");' %
1414 self.entry.qualified_name)
1415 env.use_utility_code(unraisable_exception_utility_code)
1416 env.use_utility_code(restore_exception_utility_code)
1417 default_retval = self.return_type.default_value
1418 if err_val is None and default_retval:
1419 err_val = default_retval
1420 if err_val is not None:
1421 code.putln("%s = %s;" % (Naming.retval_cname, err_val))
1423 if is_getbuffer_slot:
1424 self.getbuffer_error_cleanup(code)
1426 # If we are using the non-error cleanup section we should
1427 # jump past it if we have an error. The if-test below determine
1428 # whether this section is used.
1429 if buffers_present or is_getbuffer_slot:
1430 code.put_goto(code.return_from_error_cleanup_label)
1433 # ----- Non-error return cleanup
1434 code.put_label(code.return_label)
1435 for entry in lenv.buffer_entries:
1437 Buffer.put_release_buffer_code(code, entry)
1438 if is_getbuffer_slot:
1439 self.getbuffer_normal_cleanup(code)
1440 # ----- Return cleanup for both error and no-error return
1441 code.put_label(code.return_from_error_cleanup_label)
1442 if not Options.init_local_none:
1443 for entry in lenv.var_entries:
1444 if lenv.control_flow.get_state((entry.name, 'initialized')) is not True:
1445 entry.xdecref_cleanup = 1
1447 for entry in lenv.var_entries:
1448 if entry.type.is_pyobject:
1449 if entry.used and not entry.in_closure:
1450 code.put_var_decref(entry)
1451 elif entry.in_closure and self.needs_closure:
1452 code.put_giveref(entry.cname)
1453 # Decref any increfed args
1454 for entry in lenv.arg_entries:
1455 if entry.type.is_pyobject:
1456 if entry.in_closure:
1457 code.put_var_giveref(entry)
1458 elif entry.assignments:
1459 code.put_var_decref(entry)
1460 if self.needs_closure:
1461 code.put_decref(Naming.cur_scope_cname, lenv.scope_class.type)
1464 # This code is duplicated in ModuleNode.generate_module_init_func
1466 default_retval = self.return_type.default_value
1467 err_val = self.error_value()
1468 if err_val is None and default_retval:
1469 err_val = default_retval
1470 if self.return_type.is_pyobject:
1471 code.put_xgiveref(self.return_type.as_pyobject(Naming.retval_cname))
1473 if self.entry.is_special and self.entry.name == "__hash__":
1474 # Returning -1 for __hash__ is supposed to signal an error
1475 # We do as Python instances and coerce -1 into -2.
1476 code.putln("if (unlikely(%s == -1) && !PyErr_Occurred()) %s = -2;" % (
1477 Naming.retval_cname, Naming.retval_cname))
1480 if self.return_type.is_pyobject:
1481 code.put_trace_return(Naming.retval_cname)
1483 code.put_trace_return("Py_None")
1485 code.put_finish_refcount_context()
1488 code.putln("#ifdef WITH_THREAD")
1489 code.putln("PyGILState_Release(_save);")
1490 code.putln("#endif")
1492 if not self.return_type.is_void:
1493 code.putln("return %s;" % Naming.retval_cname)
1497 if preprocessor_guard:
1498 code.putln("#endif /*!(%s)*/" % preprocessor_guard)
1500 # ----- Go back and insert temp variable declarations
1501 tempvardecl_code.put_temp_declarations(code.funcstate)
1502 # ----- Python version
1503 code.exit_cfunc_scope()
1505 self.py_func.generate_function_definitions(env, code)
1506 self.generate_wrapper_functions(code)
1508 def declare_argument(self, env, arg):
1509 if arg.type.is_void:
1510 error(arg.pos, "Invalid use of 'void'")
1511 elif not arg.type.is_complete() and not arg.type.is_array:
1513 "Argument type '%s' is incomplete" % arg.type)
1514 return env.declare_arg(arg.name, arg.type, arg.pos)
1516 def generate_arg_type_test(self, arg, code):
1517 # Generate type test for one argument.
1518 if arg.type.typeobj_is_available():
1519 code.globalstate.use_utility_code(arg_type_test_utility_code)
1520 typeptr_cname = arg.type.typeptr_cname
1521 arg_code = "((PyObject *)%s)" % arg.entry.cname
1523 'if (unlikely(!__Pyx_ArgTypeTest(%s, %s, %d, "%s", %s))) %s' % (
1528 arg.type.is_builtin_type,
1529 code.error_goto(arg.pos)))
1531 error(arg.pos, "Cannot test type of extern C class "
1532 "without type object name specification")
1534 def generate_arg_none_check(self, arg, code):
1535 # Generate None check for one argument.
1536 code.globalstate.use_utility_code(arg_type_test_utility_code)
1537 code.putln('if (unlikely(((PyObject *)%s) == Py_None)) {' % arg.entry.cname)
1538 code.putln('''PyErr_Format(PyExc_TypeError, "Argument '%s' must not be None"); %s''' % (
1540 code.error_goto(arg.pos)))
1543 def generate_wrapper_functions(self, code):
1546 def generate_execution_code(self, code):
1547 # Evaluate and store argument default values
1548 for arg in self.args:
1549 default = arg.default
1551 if not default.is_literal:
1552 default.generate_evaluation_code(code)
1553 default.make_owned_reference(code)
1554 result = default.result_as(arg.type)
1557 arg.calculate_default_value_code(code),
1559 if arg.type.is_pyobject:
1560 code.put_giveref(default.result())
1561 default.generate_post_assignment_code(code)
1562 default.free_temps(code)
1563 # For Python class methods, create and store function object
1565 self.assmt.generate_execution_code(code)
1568 # Special code for the __getbuffer__ function
1570 def getbuffer_init(self, code):
1571 info = self.local_scope.arg_entries[1].cname
1572 # Python 3.0 betas have a bug in memoryview which makes it call
1573 # getbuffer with a NULL parameter. For now we work around this;
1574 # the following line should be removed when this bug is fixed.
1575 code.putln("if (%s == NULL) return 0;" % info)
1576 code.putln("%s->obj = Py_None; __Pyx_INCREF(Py_None);" % info)
1577 code.put_giveref("%s->obj" % info) # Do not refnanny object within structs
1579 def getbuffer_error_cleanup(self, code):
1580 info = self.local_scope.arg_entries[1].cname
1581 code.put_gotref("%s->obj" % info)
1582 code.putln("__Pyx_DECREF(%s->obj); %s->obj = NULL;" %
1585 def getbuffer_normal_cleanup(self, code):
1586 info = self.local_scope.arg_entries[1].cname
1587 code.putln("if (%s->obj == Py_None) {" % info)
1588 code.put_gotref("Py_None")
1589 code.putln("__Pyx_DECREF(Py_None); %s->obj = NULL;" % info)
1592 class CFuncDefNode(FuncDefNode):
1593 # C function definition.
1595 # modifiers ['inline']
1596 # visibility 'private' or 'public' or 'extern'
1597 # base_type CBaseTypeNode
1598 # declarator CDeclaratorNode
1601 # decorators [DecoratorNode] list of decorators
1603 # with_gil boolean Acquire GIL around body
1605 # py_func wrapper for calling from Python
1606 # overridable whether or not this is a cpdef function
1607 # inline_in_pxd whether this is an inline function in a pxd file
1609 child_attrs = ["base_type", "declarator", "body", "py_func"]
1611 inline_in_pxd = False
1613 directive_locals = {}
1615 def unqualified_name(self):
1616 return self.entry.name
1618 def analyse_declarations(self, env):
1619 self.directive_locals.update(env.directives['locals'])
1620 base_type = self.base_type.analyse(env)
1621 # The 2 here is because we need both function and argument names.
1622 name_declarator, type = self.declarator.analyse(base_type, env, nonempty = 2 * (self.body is not None))
1623 if not type.is_cfunction:
1625 "Suite attached to non-function declaration")
1626 # Remember the actual type according to the function header
1627 # written here, because the type in the symbol table entry
1628 # may be different if we're overriding a C method inherited
1629 # from the base type of an extension type.
1631 type.is_overridable = self.overridable
1632 declarator = self.declarator
1633 while not hasattr(declarator, 'args'):
1634 declarator = declarator.base
1635 self.args = declarator.args
1636 for formal_arg, type_arg in zip(self.args, type.args):
1637 formal_arg.type = type_arg.type
1638 formal_arg.name = type_arg.name
1639 formal_arg.cname = type_arg.cname
1640 name = name_declarator.name
1641 cname = name_declarator.cname
1642 self.entry = env.declare_cfunction(
1643 name, type, self.pos,
1644 cname = cname, visibility = self.visibility,
1645 defining = self.body is not None,
1646 api = self.api, modifiers = self.modifiers)
1647 self.entry.inline_func_in_pxd = self.inline_in_pxd
1648 self.return_type = type.return_type
1650 if self.overridable and not env.is_module_scope:
1651 if len(self.args) < 1 or not self.args[0].type.is_pyobject:
1652 # An error will be produced in the cdef function
1653 self.overridable = False
1655 if self.overridable:
1657 py_func_body = self.call_self_node(is_module_scope = env.is_module_scope)
1658 self.py_func = DefNode(pos = self.pos,
1659 name = self.entry.name,
1662 starstar_arg = None,
1664 body = py_func_body,
1666 self.py_func.is_module_scope = env.is_module_scope
1667 self.py_func.analyse_declarations(env)
1668 self.entry.as_variable = self.py_func.entry
1669 # Reset scope entry the above cfunction
1670 env.entries[name] = self.entry
1671 if not env.is_module_scope or Options.lookup_module_cpdef:
1672 self.override = OverrideCheckNode(self.pos, py_func = self.py_func)
1673 self.body = StatListNode(self.pos, stats=[self.override, self.body])
1674 self.create_local_scope(env)
1676 def call_self_node(self, omit_optional_args=0, is_module_scope=0):
1678 args = self.type.args
1679 if omit_optional_args:
1680 args = args[:len(args) - self.type.optional_arg_count]
1681 arg_names = [arg.name for arg in args]
1683 cfunc = ExprNodes.NameNode(self.pos, name=self.entry.name)
1685 self_arg = ExprNodes.NameNode(self.pos, name=arg_names[0])
1686 cfunc = ExprNodes.AttributeNode(self.pos, obj=self_arg, attribute=self.entry.name)
1687 skip_dispatch = not is_module_scope or Options.lookup_module_cpdef
1688 c_call = ExprNodes.SimpleCallNode(self.pos, function=cfunc, args=[ExprNodes.NameNode(self.pos, name=n) for n in arg_names[1-is_module_scope:]], wrapper_call=skip_dispatch)
1689 return ReturnStatNode(pos=self.pos, return_type=PyrexTypes.py_object_type, value=c_call)
1691 def declare_arguments(self, env):
1692 for arg in self.type.args:
1694 error(arg.pos, "Missing argument name")
1695 self.declare_argument(env, arg)
1697 def need_gil_acquisition(self, lenv):
1698 return self.type.with_gil
1700 def nogil_check(self, env):
1702 with_gil = type.with_gil
1703 if type.nogil and not with_gil:
1704 if type.return_type.is_pyobject:
1706 "Function with Python return type cannot be declared nogil")
1707 for entry in self.local_scope.var_entries:
1708 if entry.type.is_pyobject:
1709 error(self.pos, "Function declared nogil has Python locals or temporaries")
1711 def analyse_expressions(self, env):
1712 self.local_scope.directives = env.directives
1713 if self.py_func is not None:
1714 # this will also analyse the default values
1715 self.py_func.analyse_expressions(env)
1717 self.analyse_default_values(env)
1718 self.acquire_gil = self.need_gil_acquisition(self.local_scope)
1720 def needs_assignment_synthesis(self, env, code=None):
1723 def generate_function_header(self, code, with_pymethdef, with_opt_args = 1, with_dispatch = 1, cname = None):
1726 visibility = self.entry.visibility
1727 for arg in type.args[:len(type.args)-type.optional_arg_count]:
1728 arg_decls.append(arg.declaration_code())
1729 if with_dispatch and self.overridable:
1730 arg_decls.append(PyrexTypes.c_int_type.declaration_code(Naming.skip_dispatch_cname))
1731 if type.optional_arg_count and with_opt_args:
1732 arg_decls.append(type.op_arg_struct.declaration_code(Naming.optional_args_cname))
1733 if type.has_varargs:
1734 arg_decls.append("...")
1736 arg_decls = ["void"]
1738 cname = self.entry.func_cname
1739 entity = type.function_header_code(cname, ', '.join(arg_decls))
1740 if visibility == 'public':
1741 dll_linkage = "DL_EXPORT"
1744 header = self.return_type.declaration_code(entity,
1745 dll_linkage = dll_linkage)
1746 if visibility == 'extern':
1747 storage_class = "%s " % Naming.extern_c_macro
1748 elif visibility == 'public':
1751 storage_class = "static "
1752 if 'inline' in self.modifiers:
1753 self.modifiers[self.modifiers.index('inline')] = 'cython_inline'
1754 code.putln("%s%s %s {" % (
1756 ' '.join(self.modifiers).upper(), # macro forms
1759 def generate_argument_declarations(self, env, code):
1760 for arg in self.args:
1762 result = arg.calculate_default_value_code(code)
1763 code.putln('%s = %s;' % (
1764 arg.type.declaration_code(arg.cname), result))
1766 def generate_keyword_list(self, code):
1769 def generate_argument_parsing_code(self, env, code):
1771 if self.type.optional_arg_count:
1772 code.putln('if (%s) {' % Naming.optional_args_cname)
1773 for arg in self.args:
1775 code.putln('if (%s->%sn > %s) {' % (Naming.optional_args_cname, Naming.pyrex_prefix, i))
1776 declarator = arg.declarator
1777 while not hasattr(declarator, 'name'):
1778 declarator = declarator.base
1779 code.putln('%s = %s->%s;' % (arg.cname, Naming.optional_args_cname, self.type.opt_arg_cname(declarator.name)))
1781 for _ in range(self.type.optional_arg_count):
1785 def generate_argument_conversion_code(self, code):
1788 def generate_argument_type_tests(self, code):
1789 # Generate type tests for args whose type in a parent
1790 # class is a supertype of the declared type.
1791 for arg in self.type.args:
1792 if arg.needs_type_test:
1793 self.generate_arg_type_test(arg, code)
1794 elif arg.type.is_pyobject and not arg.accept_none:
1795 self.generate_arg_none_check(arg, code)
1797 def error_value(self):
1798 if self.return_type.is_pyobject:
1802 return self.entry.type.exception_value
1804 def caller_will_check_exceptions(self):
1805 return self.entry.type.exception_check
1807 def generate_wrapper_functions(self, code):
1808 # If the C signature of a function has changed, we need to generate
1809 # wrappers to put in the slots here.
1812 func_type = entry.type
1813 while entry.prev_entry is not None:
1815 entry = entry.prev_entry
1816 entry.func_cname = "%s%swrap_%s" % (self.entry.func_cname, Naming.pyrex_prefix, k)
1818 self.generate_function_header(code,
1820 with_dispatch = entry.type.is_overridable,
1821 with_opt_args = entry.type.optional_arg_count,
1822 cname = entry.func_cname)
1823 if not self.return_type.is_void:
1825 args = self.type.args
1826 arglist = [arg.cname for arg in args[:len(args)-self.type.optional_arg_count]]
1827 if entry.type.is_overridable:
1828 arglist.append(Naming.skip_dispatch_cname)
1829 elif func_type.is_overridable:
1831 if entry.type.optional_arg_count:
1832 arglist.append(Naming.optional_args_cname)
1833 elif func_type.optional_arg_count:
1834 arglist.append('NULL')
1835 code.putln('%s(%s);' % (self.entry.func_cname, ', '.join(arglist)))
1839 class PyArgDeclNode(Node):
1840 # Argument which must be a Python object (used
1841 # for * and ** arguments).
1844 # entry Symtab.Entry
1845 # annotation ExprNode or None Py3 argument annotation
1848 def generate_function_definitions(self, env, code):
1849 self.entry.generate_function_definitions(env, code)
1851 class DecoratorNode(Node):
1854 # decorator NameNode or CallNode or AttributeNode
1855 child_attrs = ['decorator']
1858 class DefNode(FuncDefNode):
1859 # A Python function definition.
1861 # name string the Python name of the function
1862 # lambda_name string the internal name of a lambda 'function'
1863 # decorators [DecoratorNode] list of decorators
1864 # args [CArgDeclNode] formal arguments
1865 # star_arg PyArgDeclNode or None * argument
1866 # starstar_arg PyArgDeclNode or None ** argument
1867 # doc EncodedString or None
1869 # return_type_annotation
1870 # ExprNode or None the Py3 return type annotation
1872 # The following subnode is constructed internally
1873 # when the def statement is inside a Python class definition.
1875 # assmt AssignmentNode Function construction/assignment
1877 child_attrs = ["args", "star_arg", "starstar_arg", "body", "decorators"]
1882 num_required_kw_args = 0
1883 reqd_kw_flags_cname = "0"
1886 return_type_annotation = None
1891 def __init__(self, pos, **kwds):
1892 FuncDefNode.__init__(self, pos, **kwds)
1894 for arg in self.args:
1901 self.num_kwonly_args = k
1902 self.num_required_kw_args = rk
1903 self.num_required_args = r
1905 def as_cfunction(self, cfunc=None, scope=None):
1907 error(self.star_arg.pos, "cdef function cannot have star argument")
1908 if self.starstar_arg:
1909 error(self.starstar_arg.pos, "cdef function cannot have starstar argument")
1912 for formal_arg in self.args:
1913 name_declarator, type = formal_arg.analyse(scope, nonempty=1)
1914 cfunc_args.append(PyrexTypes.CFuncTypeArg(name = name_declarator.name,
1916 type = py_object_type,
1917 pos = formal_arg.pos))
1918 cfunc_type = PyrexTypes.CFuncType(return_type = py_object_type,
1920 has_varargs = False,
1921 exception_value = None,
1922 exception_check = False,
1925 is_overridable = True)
1926 cfunc = CVarDefNode(self.pos, type=cfunc_type)
1930 cfunc_type = cfunc.type
1931 if len(self.args) != len(cfunc_type.args) or cfunc_type.has_varargs:
1932 error(self.pos, "wrong number of arguments")
1933 error(cfunc.pos, "previous declaration here")
1934 for i, (formal_arg, type_arg) in enumerate(zip(self.args, cfunc_type.args)):
1935 name_declarator, type = formal_arg.analyse(scope, nonempty=1,
1936 is_self_arg = (i == 0 and scope.is_c_class_scope))
1937 if type is None or type is PyrexTypes.py_object_type:
1938 formal_arg.type = type_arg.type
1939 formal_arg.name_declarator = name_declarator
1941 if cfunc_type.exception_value is None:
1942 exception_value = None
1944 exception_value = ExprNodes.ConstNode(self.pos, value=cfunc_type.exception_value, type=cfunc_type.return_type)
1945 declarator = CFuncDeclaratorNode(self.pos,
1946 base = CNameDeclaratorNode(self.pos, name=self.name, cname=None),
1948 has_varargs = False,
1949 exception_check = cfunc_type.exception_check,
1950 exception_value = exception_value,
1951 with_gil = cfunc_type.with_gil,
1952 nogil = cfunc_type.nogil)
1953 return CFuncDefNode(self.pos,
1955 base_type = CAnalysedBaseTypeNode(self.pos, type=cfunc_type.return_type),
1956 declarator = declarator,
1959 overridable = cfunc_type.is_overridable,
1961 with_gil = cfunc_type.with_gil,
1962 nogil = cfunc_type.nogil,
1963 visibility = 'private',
1965 directive_locals = getattr(cfunc, 'directive_locals', {}))
1967 def analyse_declarations(self, env):
1968 self.is_classmethod = self.is_staticmethod = False
1970 for decorator in self.decorators:
1971 func = decorator.decorator
1973 self.is_classmethod |= func.name == 'classmethod'
1974 self.is_staticmethod |= func.name == 'staticmethod'
1976 if self.is_classmethod and env.lookup_here('classmethod'):
1977 # classmethod() was overridden - not much we can do here ...
1978 self.is_classmethod = False
1979 if self.is_staticmethod and env.lookup_here('staticmethod'):
1980 # staticmethod() was overridden - not much we can do here ...
1981 self.is_staticmethod = False
1983 if self.name == '__new__':
1984 self.is_staticmethod = 1
1986 self.analyse_argument_types(env)
1987 if self.name == '<lambda>':
1988 self.declare_lambda_function(env)
1990 self.declare_pyfunction(env)
1991 self.analyse_signature(env)
1992 self.return_type = self.entry.signature.return_type()
1993 self.create_local_scope(env)
1995 def analyse_argument_types(self, env):
1996 directive_locals = self.directive_locals = env.directives['locals']
1997 allow_none_for_extension_args = env.directives['allow_none_for_extension_args']
1998 for arg in self.args:
1999 if hasattr(arg, 'name'):
2001 name_declarator = None
2003 base_type = arg.base_type.analyse(env)
2004 name_declarator, type = \
2005 arg.declarator.analyse(base_type, env)
2006 arg.name = name_declarator.name
2007 if arg.name in directive_locals:
2008 type_node = directive_locals[arg.name]
2009 other_type = type_node.analyse_as_type(env)
2010 if other_type is None:
2011 error(type_node.pos, "Not a type")
2012 elif (type is not PyrexTypes.py_object_type
2013 and not type.same_as(other_type)):
2014 error(arg.base_type.pos, "Signature does not agree with previous declaration")
2015 error(type_node.pos, "Previous declaration here")
2018 if name_declarator and name_declarator.cname:
2020 "Python function argument cannot have C name specification")
2021 arg.type = type.as_argument_type()
2023 arg.needs_conversion = 0
2024 arg.needs_type_test = 0
2026 if arg.type.is_pyobject:
2028 arg.accept_none = True
2030 arg.accept_none = False
2031 elif arg.type.is_extension_type or arg.type.is_builtin_type:
2032 if arg.default and arg.default.constant_result is None:
2033 # special case: def func(MyType obj = None)
2034 arg.accept_none = True
2036 # default depends on compiler directive
2037 arg.accept_none = allow_none_for_extension_args
2039 # probably just a plain 'object'
2040 arg.accept_none = True
2042 arg.accept_none = True # won't be used, but must be there
2044 error(arg.pos, "Only Python type arguments can have 'not None'")
2046 error(arg.pos, "Only Python type arguments can have 'or None'")
2048 def analyse_signature(self, env):
2049 if self.entry.is_special:
2050 self.entry.trivial_signature = len(self.args) == 1 and not (self.star_arg or self.starstar_arg)
2051 elif not env.directives['always_allow_keywords'] and not (self.star_arg or self.starstar_arg):
2052 # Use the simpler calling signature for zero- and one-argument functions.
2053 if self.entry.signature is TypeSlots.pyfunction_signature:
2054 if len(self.args) == 0:
2055 self.entry.signature = TypeSlots.pyfunction_noargs
2056 elif len(self.args) == 1:
2057 if self.args[0].default is None and not self.args[0].kw_only:
2058 self.entry.signature = TypeSlots.pyfunction_onearg
2059 elif self.entry.signature is TypeSlots.pymethod_signature:
2060 if len(self.args) == 1:
2061 self.entry.signature = TypeSlots.unaryfunc
2062 elif len(self.args) == 2:
2063 if self.args[1].default is None and not self.args[1].kw_only:
2064 self.entry.signature = TypeSlots.ibinaryfunc
2066 sig = self.entry.signature
2067 nfixed = sig.num_fixed_args()
2068 if sig is TypeSlots.pymethod_signature and nfixed == 1 \
2069 and len(self.args) == 0 and self.star_arg:
2070 # this is the only case where a diverging number of
2071 # arguments is not an error - when we have no explicit
2072 # 'self' parameter as in method(*args)
2073 sig = self.entry.signature = TypeSlots.pyfunction_signature # self is not 'really' used
2074 self.self_in_stararg = 1
2077 for i in range(min(nfixed, len(self.args))):
2080 if sig.is_self_arg(i) and not self.is_staticmethod:
2081 if self.is_classmethod:
2083 arg.hdr_type = arg.type = Builtin.type_type
2086 arg.hdr_type = arg.type = env.parent_type
2087 arg.needs_conversion = 0
2089 arg.hdr_type = sig.fixed_arg_type(i)
2090 if not arg.type.same_as(arg.hdr_type):
2091 if arg.hdr_type.is_pyobject and arg.type.is_pyobject:
2092 arg.needs_type_test = 1
2094 arg.needs_conversion = 1
2095 if arg.needs_conversion:
2096 arg.hdr_cname = Naming.arg_prefix + arg.name
2098 arg.hdr_cname = Naming.var_prefix + arg.name
2100 if nfixed > len(self.args):
2101 self.bad_signature()
2103 elif nfixed < len(self.args):
2104 if not sig.has_generic_args:
2105 self.bad_signature()
2106 for arg in self.args:
2107 if arg.is_generic and \
2108 (arg.type.is_extension_type or arg.type.is_builtin_type):
2109 arg.needs_type_test = 1
2111 def bad_signature(self):
2112 sig = self.entry.signature
2113 expected_str = "%d" % sig.num_fixed_args()
2114 if sig.has_generic_args:
2115 expected_str = expected_str + " or more"
2117 if name.startswith("__") and name.endswith("__"):
2118 desc = "Special method"
2122 "%s %s has wrong number of arguments "
2123 "(%d declared, %s expected)" % (
2124 desc, self.name, len(self.args), expected_str))
2126 def signature_has_nongeneric_args(self):
2127 argcount = len(self.args)
2128 if argcount == 0 or (
2129 argcount == 1 and (self.args[0].is_self_arg or
2130 self.args[0].is_type_arg)):
2134 def signature_has_generic_args(self):
2135 return self.entry.signature.has_generic_args
2137 def declare_pyfunction(self, env):
2138 #print "DefNode.declare_pyfunction:", self.name, "in", env ###
2140 entry = env.lookup_here(name)
2141 if entry and entry.type.is_cfunction and not self.is_wrapper:
2142 warning(self.pos, "Overriding cdef method with def method.", 5)
2143 entry = env.declare_pyfunction(name, self.pos)
2145 prefix = env.scope_prefix
2146 entry.func_cname = \
2147 Naming.pyfunc_prefix + prefix + name
2148 entry.pymethdef_cname = \
2149 Naming.pymethdef_prefix + prefix + name
2150 if Options.docstrings:
2151 entry.doc = embed_position(self.pos, self.doc)
2153 Naming.funcdoc_prefix + prefix + name
2154 if entry.is_special:
2155 if entry.name in TypeSlots.invisible or not entry.doc or (entry.name in '__getattr__' and env.directives['fast_getattr']):
2156 entry.wrapperbase_cname = None
2158 entry.wrapperbase_cname = Naming.wrapperbase_prefix + prefix + name
2162 def declare_lambda_function(self, env):
2164 prefix = env.scope_prefix
2166 Naming.lambda_func_prefix + u'funcdef' + prefix + self.lambda_name
2167 entry = env.declare_lambda_function(func_cname, self.pos)
2168 entry.pymethdef_cname = \
2169 Naming.lambda_func_prefix + u'methdef' + prefix + self.lambda_name
2170 entry.qualified_name = env.qualify_name(self.lambda_name)
2174 def declare_arguments(self, env):
2175 for arg in self.args:
2177 error(arg.pos, "Missing argument name")
2179 env.control_flow.set_state((), (arg.name, 'source'), 'arg')
2180 env.control_flow.set_state((), (arg.name, 'initialized'), True)
2181 if arg.needs_conversion:
2182 arg.entry = env.declare_var(arg.name, arg.type, arg.pos)
2183 if arg.type.is_pyobject:
2184 arg.entry.init = "0"
2185 arg.entry.init_to_none = 0
2187 arg.entry = self.declare_argument(env, arg)
2189 arg.entry.is_self_arg = arg.is_self_arg
2191 if arg.is_self_arg or arg.is_type_arg or \
2192 (arg.type.is_extension_type and not arg.hdr_type.is_extension_type):
2193 arg.entry.is_declared_generic = 1
2194 self.declare_python_arg(env, self.star_arg)
2195 self.declare_python_arg(env, self.starstar_arg)
2197 def declare_python_arg(self, env, arg):
2199 if env.directives['infer_types'] != False:
2200 type = PyrexTypes.unspecified_type
2202 type = py_object_type
2203 entry = env.declare_var(arg.name, type, arg.pos)
2206 entry.init_to_none = 0
2207 entry.xdecref_cleanup = 1
2209 env.control_flow.set_state((), (arg.name, 'initialized'), True)
2211 def analyse_expressions(self, env):
2212 self.local_scope.directives = env.directives
2213 self.analyse_default_values(env)
2214 if self.needs_assignment_synthesis(env):
2215 # Shouldn't we be doing this at the module level too?
2216 self.synthesize_assignment_node(env)
2218 def needs_assignment_synthesis(self, env, code=None):
2219 # Should enable for module level as well, that will require more testing...
2220 if self.entry.is_lambda:
2222 if env.is_module_scope:
2224 return env.directives['binding']
2226 return code.globalstate.directives['binding']
2227 return env.is_py_class_scope or env.is_closure_scope
2229 def synthesize_assignment_node(self, env):
2232 while genv.is_py_class_scope or genv.is_c_class_scope:
2233 genv = genv.outer_scope
2235 if genv.is_closure_scope:
2236 rhs = ExprNodes.InnerFunctionNode(
2237 self.pos, pymethdef_cname = self.entry.pymethdef_cname)
2239 rhs = ExprNodes.PyCFunctionNode(
2240 self.pos, pymethdef_cname = self.entry.pymethdef_cname, binding = env.directives['binding'])
2242 if env.is_py_class_scope:
2243 if not self.is_staticmethod and not self.is_classmethod:
2246 self.assmt = SingleAssignmentNode(self.pos,
2247 lhs = ExprNodes.NameNode(self.pos, name = self.name),
2249 self.assmt.analyse_declarations(env)
2250 self.assmt.analyse_expressions(env)
2252 def generate_function_header(self, code, with_pymethdef, proto_only=0):
2254 sig = self.entry.signature
2255 if sig.has_dummy_arg or self.self_in_stararg:
2256 arg_code_list.append(
2257 "PyObject *%s" % Naming.self_cname)
2258 for arg in self.args:
2259 if not arg.is_generic:
2260 if arg.is_self_arg or arg.is_type_arg:
2261 arg_code_list.append("PyObject *%s" % arg.hdr_cname)
2263 arg_code_list.append(
2264 arg.hdr_type.declaration_code(arg.hdr_cname))
2265 if not self.entry.is_special and sig.method_flags() == [TypeSlots.method_noargs]:
2266 arg_code_list.append("CYTHON_UNUSED PyObject *unused")
2267 if sig.has_generic_args:
2268 arg_code_list.append(
2269 "PyObject *%s, PyObject *%s"
2270 % (Naming.args_cname, Naming.kwds_cname))
2271 arg_code = ", ".join(arg_code_list)
2272 dc = self.return_type.declaration_code(self.entry.func_cname)
2273 mf = " ".join(self.modifiers).upper()
2275 header = "static %s%s(%s)" % (mf, dc, arg_code)
2276 code.putln("%s; /*proto*/" % header)
2279 if (Options.docstrings and self.entry.doc and
2280 not self.entry.scope.is_property_scope and
2281 (not self.entry.is_special or self.entry.wrapperbase_cname)):
2282 docstr = self.entry.doc
2283 if docstr.is_unicode:
2284 docstr = docstr.utf8encode()
2286 'static char %s[] = "%s";' % (
2287 self.entry.doc_cname,
2288 split_string_literal(escape_byte_string(docstr))))
2289 if self.entry.is_special:
2291 "struct wrapperbase %s;" % self.entry.wrapperbase_cname)
2294 "static PyMethodDef %s = " %
2295 self.entry.pymethdef_cname)
2296 code.put_pymethoddef(self.entry, ";", allow_skip=False)
2297 code.putln("%s {" % header)
2299 def generate_argument_declarations(self, env, code):
2300 for arg in self.args:
2301 if arg.is_generic: # or arg.needs_conversion:
2302 if arg.needs_conversion:
2303 code.putln("PyObject *%s = 0;" % arg.hdr_cname)
2304 elif not arg.entry.in_closure:
2305 code.put_var_declaration(arg.entry)
2307 def generate_keyword_list(self, code):
2308 if self.signature_has_generic_args() and \
2309 self.signature_has_nongeneric_args():
2311 "static PyObject **%s[] = {" %
2312 Naming.pykwdlist_cname)
2313 for arg in self.args:
2315 pystring_cname = code.intern_identifier(arg.name)
2316 code.put('&%s,' % pystring_cname)
2319 def generate_argument_parsing_code(self, env, code):
2320 # Generate PyArg_ParseTuple call for generic
2321 # arguments, if any.
2322 if self.entry.signature.has_dummy_arg and not self.self_in_stararg:
2323 # get rid of unused argument warning
2324 code.putln("%s = %s;" % (Naming.self_cname, Naming.self_cname))
2326 old_error_label = code.new_error_label()
2327 our_error_label = code.error_label
2328 end_label = code.new_label("argument_unpacking_done")
2330 has_kwonly_args = self.num_kwonly_args > 0
2331 has_star_or_kw_args = self.star_arg is not None \
2332 or self.starstar_arg is not None or has_kwonly_args
2334 for arg in self.args:
2335 if not arg.type.is_pyobject:
2336 done = arg.type.create_from_py_utility_code(env)
2337 if not done: pass # will fail later
2339 if not self.signature_has_generic_args():
2340 if has_star_or_kw_args:
2341 error(self.pos, "This method cannot have * or keyword arguments")
2342 self.generate_argument_conversion_code(code)
2344 elif not self.signature_has_nongeneric_args():
2345 # func(*args) or func(**kw) or func(*args, **kw)
2346 self.generate_stararg_copy_code(code)
2349 positional_args = []
2351 for arg in self.args:
2352 arg_entry = arg.entry
2355 if not arg.is_self_arg and not arg.is_type_arg:
2357 kw_only_args.append(arg)
2359 positional_args.append(arg)
2361 kw_only_args.append(arg)
2362 elif not arg.is_self_arg and not arg.is_type_arg:
2363 positional_args.append(arg)
2365 self.generate_tuple_and_keyword_parsing_code(
2366 positional_args, kw_only_args, end_label, code)
2368 code.error_label = old_error_label
2369 if code.label_used(our_error_label):
2370 if not code.label_used(end_label):
2371 code.put_goto(end_label)
2372 code.put_label(our_error_label)
2373 if has_star_or_kw_args:
2374 self.generate_arg_decref(self.star_arg, code)
2375 if self.starstar_arg:
2376 if self.starstar_arg.entry.xdecref_cleanup:
2377 code.put_var_xdecref(self.starstar_arg.entry)
2379 code.put_var_decref(self.starstar_arg.entry)
2380 code.putln('__Pyx_AddTraceback("%s");' % self.entry.qualified_name)
2381 # The arguments are put into the closure one after the
2382 # other, so when type errors are found, all references in
2383 # the closure instance must be properly ref-counted to
2384 # facilitate generic closure instance deallocation. In
2385 # the case of an argument type error, it's best to just
2386 # DECREF+clear the already handled references, as this
2387 # frees their references as early as possible.
2388 for arg in self.args:
2389 if arg.type.is_pyobject and arg.entry.in_closure:
2390 code.put_var_xdecref_clear(arg.entry)
2391 if self.needs_closure:
2392 code.put_decref(Naming.cur_scope_cname, self.local_scope.scope_class.type)
2393 code.put_finish_refcount_context()
2394 code.putln("return %s;" % self.error_value())
2395 if code.label_used(end_label):
2396 code.put_label(end_label)
2398 def generate_arg_assignment(self, arg, item, code):
2399 if arg.type.is_pyobject:
2401 item = PyrexTypes.typecast(arg.type, PyrexTypes.py_object_type, item)
2403 code.putln("%s = %s;" % (entry.cname, item))
2404 if entry.in_closure:
2405 code.put_var_incref(entry)
2407 func = arg.type.from_py_function
2409 code.putln("%s = %s(%s); %s" % (
2413 code.error_goto_if(arg.type.error_condition(arg.entry.cname), arg.pos)))
2415 error(arg.pos, "Cannot convert Python object argument to type '%s'" % arg.type)
2417 def generate_arg_xdecref(self, arg, code):
2419 code.put_var_xdecref(arg.entry)
2421 def generate_arg_decref(self, arg, code):
2423 code.put_var_decref(arg.entry)
2425 def generate_stararg_copy_code(self, code):
2426 if not self.star_arg:
2427 code.globalstate.use_utility_code(raise_argtuple_invalid_utility_code)
2428 code.putln("if (unlikely(PyTuple_GET_SIZE(%s) > 0)) {" %
2430 code.put('__Pyx_RaiseArgtupleInvalid("%s", 1, 0, 0, PyTuple_GET_SIZE(%s)); return %s;' % (
2431 self.name, Naming.args_cname, self.error_value()))
2434 code.globalstate.use_utility_code(keyword_string_check_utility_code)
2436 if self.starstar_arg:
2438 kwarg_check = "unlikely(%s)" % Naming.kwds_cname
2440 kwarg_check = "%s" % Naming.kwds_cname
2442 kwarg_check = "unlikely(%s) && unlikely(PyDict_Size(%s) > 0)" % (
2443 Naming.kwds_cname, Naming.kwds_cname)
2445 "if (%s && unlikely(!__Pyx_CheckKeywordStrings(%s, \"%s\", %d))) return %s;" % (
2446 kwarg_check, Naming.kwds_cname, self.name,
2447 bool(self.starstar_arg), self.error_value()))
2449 if self.starstar_arg:
2450 code.putln("%s = (%s) ? PyDict_Copy(%s) : PyDict_New();" % (
2451 self.starstar_arg.entry.cname,
2454 code.putln("if (unlikely(!%s)) return %s;" % (
2455 self.starstar_arg.entry.cname, self.error_value()))
2456 self.starstar_arg.entry.xdecref_cleanup = 0
2457 code.put_gotref(self.starstar_arg.entry.cname)
2459 if self.self_in_stararg:
2460 # need to create a new tuple with 'self' inserted as first item
2461 code.put("%s = PyTuple_New(PyTuple_GET_SIZE(%s)+1); if (unlikely(!%s)) " % (
2462 self.star_arg.entry.cname,
2464 self.star_arg.entry.cname))
2465 if self.starstar_arg:
2467 code.put_decref_clear(self.starstar_arg.entry.cname, py_object_type)
2468 code.putln("return %s;" % self.error_value())
2471 code.putln("return %s;" % self.error_value())
2472 code.put_gotref(self.star_arg.entry.cname)
2473 code.put_incref(Naming.self_cname, py_object_type)
2474 code.put_giveref(Naming.self_cname)
2475 code.putln("PyTuple_SET_ITEM(%s, 0, %s);" % (
2476 self.star_arg.entry.cname, Naming.self_cname))
2477 temp = code.funcstate.allocate_temp(PyrexTypes.c_py_ssize_t_type, manage_ref=False)
2478 code.putln("for (%s=0; %s < PyTuple_GET_SIZE(%s); %s++) {" % (
2479 temp, temp, Naming.args_cname, temp))
2480 code.putln("PyObject* item = PyTuple_GET_ITEM(%s, %s);" % (
2481 Naming.args_cname, temp))
2482 code.put_incref("item", py_object_type)
2483 code.put_giveref("item")
2484 code.putln("PyTuple_SET_ITEM(%s, %s+1, item);" % (
2485 self.star_arg.entry.cname, temp))
2487 code.funcstate.release_temp(temp)
2488 self.star_arg.entry.xdecref_cleanup = 0
2490 code.put_incref(Naming.args_cname, py_object_type)
2491 code.putln("%s = %s;" % (
2492 self.star_arg.entry.cname,
2494 self.star_arg.entry.xdecref_cleanup = 0
2496 def generate_tuple_and_keyword_parsing_code(self, positional_args,
2497 kw_only_args, success_label, code):
2498 argtuple_error_label = code.new_label("argtuple_error")
2500 min_positional_args = self.num_required_args - self.num_required_kw_args
2501 if len(self.args) > 0 and (self.args[0].is_self_arg or self.args[0].is_type_arg):
2502 min_positional_args -= 1
2503 max_positional_args = len(positional_args)
2504 has_fixed_positional_count = not self.star_arg and \
2505 min_positional_args == max_positional_args
2507 code.globalstate.use_utility_code(raise_double_keywords_utility_code)
2508 code.globalstate.use_utility_code(raise_argtuple_invalid_utility_code)
2509 if self.num_required_kw_args:
2510 code.globalstate.use_utility_code(raise_keyword_required_utility_code)
2512 if self.starstar_arg or self.star_arg:
2513 self.generate_stararg_init_code(max_positional_args, code)
2515 # --- optimised code when we receive keyword arguments
2516 if self.num_required_kw_args:
2517 likely_hint = "likely"
2519 likely_hint = "unlikely"
2520 code.putln("if (%s(%s)) {" % (likely_hint, Naming.kwds_cname))
2521 self.generate_keyword_unpacking_code(
2522 min_positional_args, max_positional_args,
2523 has_fixed_positional_count,
2524 positional_args, kw_only_args, argtuple_error_label, code)
2526 # --- optimised code when we do not receive any keyword arguments
2527 if (self.num_required_kw_args and min_positional_args > 0) or min_positional_args == max_positional_args:
2528 # Python raises arg tuple related errors first, so we must
2529 # check the length here
2530 if min_positional_args == max_positional_args and not self.star_arg:
2534 code.putln('} else if (PyTuple_GET_SIZE(%s) %s %d) {' % (
2535 Naming.args_cname, compare, min_positional_args))
2536 code.put_goto(argtuple_error_label)
2538 if self.num_required_kw_args:
2539 # pure error case: keywords required but not passed
2540 if max_positional_args > min_positional_args and not self.star_arg:
2541 code.putln('} else if (PyTuple_GET_SIZE(%s) > %d) {' % (
2542 Naming.args_cname, max_positional_args))
2543 code.put_goto(argtuple_error_label)
2544 code.putln('} else {')
2545 for i, arg in enumerate(kw_only_args):
2547 pystring_cname = code.intern_identifier(arg.name)
2548 # required keyword-only argument missing
2549 code.put('__Pyx_RaiseKeywordRequired("%s", %s); ' % (
2552 code.putln(code.error_goto(self.pos))
2555 elif min_positional_args == max_positional_args:
2556 # parse the exact number of positional arguments from the
2558 code.putln('} else {')
2559 for i, arg in enumerate(positional_args):
2560 item = "PyTuple_GET_ITEM(%s, %d)" % (Naming.args_cname, i)
2561 self.generate_arg_assignment(arg, item, code)
2562 self.generate_arg_default_assignments(code)
2565 # parse the positional arguments from the variable length
2567 code.putln('} else {')
2568 self.generate_arg_default_assignments(code)
2569 code.putln('switch (PyTuple_GET_SIZE(%s)) {' % Naming.args_cname)
2571 code.putln('default:')
2572 reversed_args = list(enumerate(positional_args))[::-1]
2573 for i, arg in reversed_args:
2574 if i >= min_positional_args-1:
2575 if min_positional_args > 1:
2576 code.putln('case %2d:' % (i+1)) # pure code beautification
2578 code.put('case %2d: ' % (i+1))
2579 item = "PyTuple_GET_ITEM(%s, %d)" % (Naming.args_cname, i)
2580 self.generate_arg_assignment(arg, item, code)
2581 if min_positional_args == 0:
2582 code.put('case 0: ')
2583 code.putln('break;')
2585 if min_positional_args:
2586 for i in range(min_positional_args-1, -1, -1):
2587 code.putln('case %2d:' % i)
2588 code.put_goto(argtuple_error_label)
2590 code.put('default: ')
2591 code.put_goto(argtuple_error_label)
2596 if code.label_used(argtuple_error_label):
2597 code.put_goto(success_label)
2598 code.put_label(argtuple_error_label)
2599 code.put('__Pyx_RaiseArgtupleInvalid("%s", %d, %d, %d, PyTuple_GET_SIZE(%s)); ' % (
2600 self.name, has_fixed_positional_count,
2601 min_positional_args, max_positional_args,
2603 code.putln(code.error_goto(self.pos))
2605 def generate_arg_default_assignments(self, code):
2606 for arg in self.args:
2607 if arg.is_generic and arg.default:
2611 arg.calculate_default_value_code(code)))
2613 def generate_stararg_init_code(self, max_positional_args, code):
2614 if self.starstar_arg:
2615 self.starstar_arg.entry.xdecref_cleanup = 0
2616 code.putln('%s = PyDict_New(); if (unlikely(!%s)) return %s;' % (
2617 self.starstar_arg.entry.cname,
2618 self.starstar_arg.entry.cname,
2619 self.error_value()))
2620 code.put_gotref(self.starstar_arg.entry.cname)
2622 self.star_arg.entry.xdecref_cleanup = 0
2623 code.putln('if (PyTuple_GET_SIZE(%s) > %d) {' % (
2625 max_positional_args))
2626 code.put('%s = PyTuple_GetSlice(%s, %d, PyTuple_GET_SIZE(%s)); ' % (
2627 self.star_arg.entry.cname, Naming.args_cname,
2628 max_positional_args, Naming.args_cname))
2629 code.put_gotref(self.star_arg.entry.cname)
2630 if self.starstar_arg:
2632 code.putln("if (unlikely(!%s)) {" % self.star_arg.entry.cname)
2633 code.put_decref(self.starstar_arg.entry.cname, py_object_type)
2634 code.putln('return %s;' % self.error_value())
2637 code.putln("if (unlikely(!%s)) return %s;" % (
2638 self.star_arg.entry.cname, self.error_value()))
2639 code.putln('} else {')
2640 code.put("%s = %s; " % (self.star_arg.entry.cname, Naming.empty_tuple))
2641 code.put_incref(Naming.empty_tuple, py_object_type)
2644 def generate_keyword_unpacking_code(self, min_positional_args, max_positional_args,
2645 has_fixed_positional_count, positional_args,
2646 kw_only_args, argtuple_error_label, code):
2647 all_args = tuple(positional_args) + tuple(kw_only_args)
2648 max_args = len(all_args)
2650 code.putln("Py_ssize_t kw_args = PyDict_Size(%s);" %
2652 # the 'values' array collects borrowed references to arguments
2653 # before doing any type coercion etc.
2654 code.putln("PyObject* values[%d] = {%s};" % (
2655 max_args, ','.join('0'*max_args)))
2657 # assign borrowed Python default values to the values array,
2658 # so that they can be overwritten by received arguments below
2659 for i, arg in enumerate(all_args):
2660 if arg.default and arg.type.is_pyobject:
2661 default_value = arg.calculate_default_value_code(code)
2662 code.putln('values[%d] = %s;' % (i, arg.type.as_pyobject(default_value)))
2664 # parse the args tuple and check that it's not too long
2665 code.putln('switch (PyTuple_GET_SIZE(%s)) {' % Naming.args_cname)
2667 code.putln('default:')
2668 for i in range(max_positional_args-1, -1, -1):
2669 code.put('case %2d: ' % (i+1))
2670 code.putln("values[%d] = PyTuple_GET_ITEM(%s, %d);" % (
2671 i, Naming.args_cname, i))
2672 code.putln('case 0: break;')
2673 if not self.star_arg:
2674 code.put('default: ') # more arguments than allowed
2675 code.put_goto(argtuple_error_label)
2678 # now fill up the positional/required arguments with values
2680 if self.num_required_args or max_positional_args > 0:
2681 last_required_arg = -1
2682 for i, arg in enumerate(all_args):
2684 last_required_arg = i
2685 if last_required_arg < max_positional_args:
2686 last_required_arg = max_positional_args-1
2687 num_required_args = self.num_required_args
2688 if max_positional_args > 0:
2689 code.putln('switch (PyTuple_GET_SIZE(%s)) {' % Naming.args_cname)
2690 for i, arg in enumerate(all_args[:last_required_arg+1]):
2691 if max_positional_args > 0 and i <= max_positional_args:
2692 if self.star_arg and i == max_positional_args:
2693 code.putln('default:')
2695 code.putln('case %2d:' % i)
2696 pystring_cname = code.intern_identifier(arg.name)
2699 # handled separately below
2701 code.putln('if (kw_args > 0) {')
2702 code.putln('PyObject* value = PyDict_GetItem(%s, %s);' % (
2703 Naming.kwds_cname, pystring_cname))
2704 code.putln('if (value) { values[%d] = value; kw_args--; }' % i)
2707 num_required_args -= 1
2708 code.putln('values[%d] = PyDict_GetItem(%s, %s);' % (
2709 i, Naming.kwds_cname, pystring_cname))
2710 code.putln('if (likely(values[%d])) kw_args--;' % i);
2711 if i < min_positional_args:
2713 # special case: we know arg 0 is missing
2715 code.put_goto(argtuple_error_label)
2717 # print the correct number of values (args or
2718 # kwargs) that were passed into positional
2719 # arguments up to this point
2720 code.putln('else {')
2721 code.put('__Pyx_RaiseArgtupleInvalid("%s", %d, %d, %d, %d); ' % (
2722 self.name, has_fixed_positional_count,
2723 min_positional_args, max_positional_args, i))
2724 code.putln(code.error_goto(self.pos))
2727 code.putln('else {')
2728 code.put('__Pyx_RaiseKeywordRequired("%s", %s); ' %(
2729 self.name, pystring_cname))
2730 code.putln(code.error_goto(self.pos))
2732 if max_positional_args > 0:
2735 if kw_only_args and not self.starstar_arg:
2736 # unpack optional keyword-only arguments
2737 # checking for interned strings in a dict is faster than iterating
2738 # but it's too likely that we must iterate if we expect **kwargs
2740 for i, arg in enumerate(all_args[max_positional_args:]):
2741 if not arg.kw_only or not arg.default:
2743 optional_args.append((i+max_positional_args, arg))
2745 # this mimics an unrolled loop so that we can "break" out of it
2746 code.putln('while (kw_args > 0) {')
2747 code.putln('PyObject* value;')
2748 for i, arg in optional_args:
2749 pystring_cname = code.intern_identifier(arg.name)
2751 'value = PyDict_GetItem(%s, %s);' % (
2752 Naming.kwds_cname, pystring_cname))
2754 'if (value) { values[%d] = value; if (!(--kw_args)) break; }' % i)
2755 code.putln('break;')
2758 code.putln('if (unlikely(kw_args > 0)) {')
2759 # non-positional/-required kw args left in dict: default args,
2760 # kw-only args, **kwargs or error
2762 # This is sort of a catch-all: except for checking required
2763 # arguments, this will always do the right thing for unpacking
2764 # keyword arguments, so that we can concentrate on optimising
2765 # common cases above.
2766 if max_positional_args == 0:
2769 code.putln("const Py_ssize_t used_pos_args = (PyTuple_GET_SIZE(%s) < %d) ? PyTuple_GET_SIZE(%s) : %d;" % (
2770 Naming.args_cname, max_positional_args,
2771 Naming.args_cname, max_positional_args))
2772 pos_arg_count = "used_pos_args"
2774 pos_arg_count = "PyTuple_GET_SIZE(%s)" % Naming.args_cname
2775 code.globalstate.use_utility_code(parse_keywords_utility_code)
2777 'if (unlikely(__Pyx_ParseOptionalKeywords(%s, %s, %s, values, %s, "%s") < 0)) ' % (
2779 Naming.pykwdlist_cname,
2780 self.starstar_arg and self.starstar_arg.entry.cname or '0',
2783 code.putln(code.error_goto(self.pos))
2786 # convert arg values to their final type and assign them
2787 for i, arg in enumerate(all_args):
2788 if arg.default and not arg.type.is_pyobject:
2789 code.putln("if (values[%d]) {" % i)
2790 self.generate_arg_assignment(arg, "values[%d]" % i, code)
2791 if arg.default and not arg.type.is_pyobject:
2792 code.putln('} else {')
2796 arg.calculate_default_value_code(code)))
2799 def generate_argument_conversion_code(self, code):
2800 # Generate code to convert arguments from signature type to
2801 # declared type, if needed. Also copies signature arguments
2802 # into closure fields.
2803 for arg in self.args:
2804 if arg.needs_conversion:
2805 self.generate_arg_conversion(arg, code)
2806 elif arg.entry.in_closure:
2807 code.putln('%s = %s;' % (arg.entry.cname, arg.hdr_cname))
2808 if arg.type.is_pyobject:
2809 code.put_var_incref(arg.entry)
2811 def generate_arg_conversion(self, arg, code):
2812 # Generate conversion code for one argument.
2813 old_type = arg.hdr_type
2815 if old_type.is_pyobject:
2817 code.putln("if (%s) {" % arg.hdr_cname)
2819 code.putln("assert(%s); {" % arg.hdr_cname)
2820 self.generate_arg_conversion_from_pyobject(arg, code)
2822 elif new_type.is_pyobject:
2823 self.generate_arg_conversion_to_pyobject(arg, code)
2825 if new_type.assignable_from(old_type):
2827 "%s = %s;" % (arg.entry.cname, arg.hdr_cname))
2830 "Cannot convert 1 argument from '%s' to '%s'" %
2831 (old_type, new_type))
2833 def generate_arg_conversion_from_pyobject(self, arg, code):
2835 func = new_type.from_py_function
2836 # copied from CoerceFromPyTypeNode
2838 lhs = arg.entry.cname
2839 rhs = "%s(%s)" % (func, arg.hdr_cname)
2840 if new_type.is_enum:
2841 rhs = PyrexTypes.typecast(new_type, PyrexTypes.c_long_type, rhs)
2842 code.putln("%s = %s; %s" % (
2845 code.error_goto_if(new_type.error_condition(arg.entry.cname), arg.pos)))
2848 "Cannot convert Python object argument to type '%s'"
2851 def generate_arg_conversion_to_pyobject(self, arg, code):
2852 old_type = arg.hdr_type
2853 func = old_type.to_py_function
2855 code.putln("%s = %s(%s); %s" % (
2859 code.error_goto_if_null(arg.entry.cname, arg.pos)))
2860 code.put_var_gotref(arg.entry)
2863 "Cannot convert argument of type '%s' to Python object"
2866 def generate_argument_type_tests(self, code):
2867 # Generate type tests for args whose signature
2868 # type is PyObject * and whose declared type is
2869 # a subtype thereof.
2870 for arg in self.args:
2871 if arg.needs_type_test:
2872 self.generate_arg_type_test(arg, code)
2873 elif not arg.accept_none and arg.type.is_pyobject:
2874 self.generate_arg_none_check(arg, code)
2876 def error_value(self):
2877 return self.entry.signature.error_value
2879 def caller_will_check_exceptions(self):
2882 class OverrideCheckNode(StatNode):
2883 # A Node for dispatching to the def method if it
2892 child_attrs = ['body']
2896 def analyse_expressions(self, env):
2897 self.args = env.arg_entries
2898 if self.py_func.is_module_scope:
2903 self.func_node = ExprNodes.RawCNameExprNode(self.pos, py_object_type)
2904 call_tuple = ExprNodes.TupleNode(self.pos, args=[ExprNodes.NameNode(self.pos, name=arg.name) for arg in self.args[first_arg:]])
2905 call_node = ExprNodes.SimpleCallNode(self.pos,
2906 function=self.func_node,
2907 args=[ExprNodes.NameNode(self.pos, name=arg.name) for arg in self.args[first_arg:]])
2908 self.body = ReturnStatNode(self.pos, value=call_node)
2909 self.body.analyse_expressions(env)
2911 def generate_execution_code(self, code):
2912 interned_attr_cname = code.intern_identifier(self.py_func.entry.name)
2913 # Check to see if we are an extension type
2914 if self.py_func.is_module_scope:
2915 self_arg = "((PyObject *)%s)" % Naming.module_cname
2917 self_arg = "((PyObject *)%s)" % self.args[0].cname
2918 code.putln("/* Check if called by wrapper */")
2919 code.putln("if (unlikely(%s)) ;" % Naming.skip_dispatch_cname)
2920 code.putln("/* Check if overriden in Python */")
2921 if self.py_func.is_module_scope:
2922 code.putln("else {")
2924 code.putln("else if (unlikely(Py_TYPE(%s)->tp_dictoffset != 0)) {" % self_arg)
2925 func_node_temp = code.funcstate.allocate_temp(py_object_type, manage_ref=True)
2926 self.func_node.set_cname(func_node_temp)
2927 # need to get attribute manually--scope would return cdef method
2928 err = code.error_goto_if_null(func_node_temp, self.pos)
2929 code.putln("%s = PyObject_GetAttr(%s, %s); %s" % (
2930 func_node_temp, self_arg, interned_attr_cname, err))
2931 code.put_gotref(func_node_temp)
2932 is_builtin_function_or_method = "PyCFunction_Check(%s)" % func_node_temp
2933 is_overridden = "(PyCFunction_GET_FUNCTION(%s) != (void *)&%s)" % (
2934 func_node_temp, self.py_func.entry.func_cname)
2935 code.putln("if (!%s || %s) {" % (is_builtin_function_or_method, is_overridden))
2936 self.body.generate_execution_code(code)
2938 code.put_decref_clear(func_node_temp, PyrexTypes.py_object_type)
2939 code.funcstate.release_temp(func_node_temp)
2942 class ClassDefNode(StatNode, BlockNode):
2945 class PyClassDefNode(ClassDefNode):
2946 # A Python class definition.
2948 # name EncodedString Name of the class
2949 # doc string or None
2950 # body StatNode Attribute definition code
2951 # entry Symtab.Entry
2952 # scope PyClassScope
2953 # decorators [DecoratorNode] list of decorators or None
2955 # The following subnodes are constructed internally:
2957 # dict DictNode Class dictionary or Py3 namespace
2958 # classobj ClassNode Class object
2959 # target NameNode Variable to assign class object to
2961 child_attrs = ["body", "dict", "metaclass", "mkw", "bases", "classobj", "target"]
2963 py3_style_class = False # Python3 style class (bases+kwargs)
2965 def __init__(self, pos, name, bases, doc, body, decorators = None,
2966 keyword_args = None, starstar_arg = None):
2967 StatNode.__init__(self, pos)
2971 self.decorators = decorators
2973 if self.doc and Options.docstrings:
2974 doc = embed_position(self.pos, self.doc)
2975 doc_node = ExprNodes.StringNode(pos, value = doc)
2978 if keyword_args or starstar_arg:
2979 self.py3_style_class = True
2981 self.metaclass = None
2982 if keyword_args and not starstar_arg:
2983 for i, item in list(enumerate(keyword_args.key_value_pairs))[::-1]:
2984 if item.key.value == 'metaclass':
2985 if self.metaclass is not None:
2986 error(item.pos, "keyword argument 'metaclass' passed multiple times")
2987 # special case: we already know the metaclass,
2988 # so we don't need to do the "build kwargs,
2989 # find metaclass" dance at runtime
2990 self.metaclass = item.value
2991 del keyword_args.key_value_pairs[i]
2992 if starstar_arg or (keyword_args and keyword_args.key_value_pairs):
2993 self.mkw = ExprNodes.KeywordArgsNode(
2994 pos, keyword_args = keyword_args, starstar_arg = starstar_arg)
2996 self.mkw = ExprNodes.NullNode(pos)
2997 if self.metaclass is None:
2998 self.metaclass = ExprNodes.PyClassMetaclassNode(
2999 pos, mkw = self.mkw, bases = self.bases)
3000 self.dict = ExprNodes.PyClassNamespaceNode(pos, name = name,
3001 doc = doc_node, metaclass = self.metaclass, bases = self.bases,
3003 self.classobj = ExprNodes.Py3ClassNode(pos, name = name,
3004 bases = self.bases, dict = self.dict, doc = doc_node,
3005 metaclass = self.metaclass, mkw = self.mkw)
3007 self.dict = ExprNodes.DictNode(pos, key_value_pairs = [])
3008 self.metaclass = None
3011 self.classobj = ExprNodes.ClassNode(pos, name = name,
3012 bases = bases, dict = self.dict, doc = doc_node)
3013 self.target = ExprNodes.NameNode(pos, name = name)
3015 def as_cclass(self):
3017 Return this node as if it were declared as an extension class
3019 if self.py3_style_class:
3020 error(self.classobj.pos, "Python3 style class could not be represented as C class")
3022 bases = self.classobj.bases.args
3024 base_class_name = None
3025 base_class_module = None
3026 elif len(bases) == 1:
3029 from ExprNodes import AttributeNode, NameNode
3030 while isinstance(base, AttributeNode):
3031 path.insert(0, base.attribute)
3033 if isinstance(base, NameNode):
3034 path.insert(0, base.name)
3035 base_class_name = path[-1]
3037 base_class_module = u'.'.join(path[:-1])
3039 base_class_module = None
3041 error(self.classobj.bases.args.pos, "Invalid base class")
3043 error(self.classobj.bases.args.pos, "C class may only have one base class")
3046 return CClassDefNode(self.pos,
3047 visibility = 'private',
3049 class_name = self.name,
3050 base_class_module = base_class_module,
3051 base_class_name = base_class_name,
3052 decorators = self.decorators,
3057 def create_scope(self, env):
3059 while genv.is_py_class_scope or genv.is_c_class_scope:
3060 genv = genv.outer_scope
3061 cenv = self.scope = PyClassScope(name = self.name, outer_scope = genv)
3064 def analyse_declarations(self, env):
3065 self.target.analyse_target_declaration(env)
3066 cenv = self.create_scope(env)
3067 cenv.directives = env.directives
3068 cenv.class_obj_cname = self.target.entry.cname
3069 self.body.analyse_declarations(cenv)
3071 def analyse_expressions(self, env):
3072 if self.py3_style_class:
3073 self.bases.analyse_expressions(env)
3074 self.metaclass.analyse_expressions(env)
3075 self.mkw.analyse_expressions(env)
3076 self.dict.analyse_expressions(env)
3077 self.classobj.analyse_expressions(env)
3078 genv = env.global_scope()
3080 self.body.analyse_expressions(cenv)
3081 self.target.analyse_target_expression(env, self.classobj)
3083 def generate_function_definitions(self, env, code):
3084 self.generate_lambda_definitions(self.scope, code)
3085 self.body.generate_function_definitions(self.scope, code)
3087 def generate_execution_code(self, code):
3088 code.pyclass_stack.append(self)
3090 if self.py3_style_class:
3091 self.bases.generate_evaluation_code(code)
3092 self.mkw.generate_evaluation_code(code)
3093 self.metaclass.generate_evaluation_code(code)
3094 self.dict.generate_evaluation_code(code)
3095 cenv.namespace_cname = cenv.class_obj_cname = self.dict.result()
3096 self.body.generate_execution_code(code)
3097 self.classobj.generate_evaluation_code(code)
3098 cenv.namespace_cname = cenv.class_obj_cname = self.classobj.result()
3099 self.target.generate_assignment_code(self.classobj, code)
3100 self.dict.generate_disposal_code(code)
3101 self.dict.free_temps(code)
3102 if self.py3_style_class:
3103 self.mkw.generate_disposal_code(code)
3104 self.mkw.free_temps(code)
3105 self.metaclass.generate_disposal_code(code)
3106 self.metaclass.free_temps(code)
3107 self.bases.generate_disposal_code(code)
3108 self.bases.free_temps(code)
3109 code.pyclass_stack.pop()
3111 class CClassDefNode(ClassDefNode):
3112 # An extension type definition.
3114 # visibility 'private' or 'public' or 'extern'
3115 # typedef_flag boolean
3117 # module_name string or None For import of extern type objects
3118 # class_name string Unqualified name of class
3119 # as_name string or None Name to declare as in this scope
3120 # base_class_module string or None Module containing the base class
3121 # base_class_name string or None Name of the base class
3122 # objstruct_name string or None Specified C name of object struct
3123 # typeobj_name string or None Specified C name of type object
3124 # in_pxd boolean Is in a .pxd file
3125 # decorators [DecoratorNode] list of decorators or None
3126 # doc string or None
3127 # body StatNode or None
3128 # entry Symtab.Entry
3129 # base_type PyExtensionType or None
3130 # buffer_defaults_node DictNode or None Declares defaults for a buffer
3131 # buffer_defaults_pos
3133 child_attrs = ["body"]
3134 buffer_defaults_node = None
3135 buffer_defaults_pos = None
3136 typedef_flag = False
3138 objstruct_name = None
3142 def analyse_declarations(self, env):
3143 #print "CClassDefNode.analyse_declarations:", self.class_name
3144 #print "...visibility =", self.visibility
3145 #print "...module_name =", self.module_name
3148 if self.buffer_defaults_node:
3149 buffer_defaults = Buffer.analyse_buffer_options(self.buffer_defaults_pos,
3150 env, [], self.buffer_defaults_node,
3151 need_complete=False)
3153 buffer_defaults = None
3155 if env.in_cinclude and not self.objstruct_name:
3156 error(self.pos, "Object struct name specification required for "
3157 "C class defined in 'extern from' block")
3158 self.base_type = None
3159 # Now that module imports are cached, we need to
3160 # import the modules for extern classes.
3161 if self.module_name:
3163 for module in env.cimported_modules:
3164 if module.name == self.module_name:
3165 self.module = module
3166 if self.module is None:
3167 self.module = ModuleScope(self.module_name, None, env.context)
3168 self.module.has_extern_class = 1
3169 env.add_imported_module(self.module)
3171 if self.base_class_name:
3172 if self.base_class_module:
3173 base_class_scope = env.find_module(self.base_class_module, self.pos)
3175 base_class_scope = env
3176 if self.base_class_name == 'object':
3177 # extension classes are special and don't need to inherit from object
3178 if base_class_scope is None or base_class_scope.lookup('object') is None:
3179 self.base_class_name = None
3180 self.base_class_module = None
3181 base_class_scope = None
3182 if base_class_scope:
3183 base_class_entry = base_class_scope.find(self.base_class_name, self.pos)
3184 if base_class_entry:
3185 if not base_class_entry.is_type:
3186 error(self.pos, "'%s' is not a type name" % self.base_class_name)
3187 elif not base_class_entry.type.is_extension_type:
3188 error(self.pos, "'%s' is not an extension type" % self.base_class_name)
3189 elif not base_class_entry.type.is_complete():
3190 error(self.pos, "Base class '%s' of type '%s' is incomplete" % (
3191 self.base_class_name, self.class_name))
3192 elif base_class_entry.type.scope and base_class_entry.type.scope.directives and \
3193 base_class_entry.type.scope.directives['final']:
3194 error(self.pos, "Base class '%s' of type '%s' is final" % (
3195 self.base_class_name, self.class_name))
3197 self.base_type = base_class_entry.type
3198 has_body = self.body is not None
3199 if self.module_name and self.visibility != 'extern':
3200 module_path = self.module_name.split(".")
3201 home_scope = env.find_imported_module(module_path, self.pos)
3207 if self.visibility == 'extern':
3208 if self.module_name == '__builtin__' and self.class_name in Builtin.builtin_types:
3209 warning(self.pos, "%s already a builtin Cython type" % self.class_name, 1)
3211 self.entry = home_scope.declare_c_class(
3212 name = self.class_name,
3214 defining = has_body and self.in_pxd,
3215 implementing = has_body and not self.in_pxd,
3216 module_name = self.module_name,
3217 base_type = self.base_type,
3218 objstruct_cname = self.objstruct_name,
3219 typeobj_cname = self.typeobj_name,
3220 visibility = self.visibility,
3221 typedef_flag = self.typedef_flag,
3223 buffer_defaults = buffer_defaults)
3224 if home_scope is not env and self.visibility == 'extern':
3225 env.add_imported_entry(self.class_name, self.entry, self.pos)
3226 self.scope = scope = self.entry.type.scope
3227 if scope is not None:
3228 scope.directives = env.directives
3230 if self.doc and Options.docstrings:
3231 scope.doc = embed_position(self.pos, self.doc)
3234 self.body.analyse_declarations(scope)
3238 scope.implemented = 1
3239 env.allocate_vtable_names(self.entry)
3241 def analyse_expressions(self, env):
3243 scope = self.entry.type.scope
3244 self.body.analyse_expressions(scope)
3246 def generate_function_definitions(self, env, code):
3248 self.generate_lambda_definitions(self.scope, code)
3249 self.body.generate_function_definitions(self.scope, code)
3251 def generate_execution_code(self, code):
3252 # This is needed to generate evaluation code for
3253 # default values of method arguments.
3255 self.body.generate_execution_code(code)
3257 def annotate(self, code):
3259 self.body.annotate(code)
3262 class PropertyNode(StatNode):
3263 # Definition of a property in an extension type.
3266 # doc EncodedString or None Doc string
3269 child_attrs = ["body"]
3271 def analyse_declarations(self, env):
3272 entry = env.declare_property(self.name, self.doc, self.pos)
3274 entry.scope.directives = env.directives
3275 self.body.analyse_declarations(entry.scope)
3277 def analyse_expressions(self, env):
3278 self.body.analyse_expressions(env)
3280 def generate_function_definitions(self, env, code):
3281 self.body.generate_function_definitions(env, code)
3283 def generate_execution_code(self, code):
3286 def annotate(self, code):
3287 self.body.annotate(code)
3290 class GlobalNode(StatNode):
3291 # Global variable declaration.
3297 def analyse_declarations(self, env):
3298 for name in self.names:
3299 env.declare_global(name, self.pos)
3301 def analyse_expressions(self, env):
3304 def generate_execution_code(self, code):
3308 class ExprStatNode(StatNode):
3309 # Expression used as a statement.
3313 child_attrs = ["expr"]
3315 def analyse_declarations(self, env):
3317 if isinstance(self.expr, ExprNodes.GeneralCallNode):
3318 func = self.expr.function.as_cython_attribute()
3319 if func == u'declare':
3320 args, kwds = self.expr.explicit_args_kwds()
3322 error(self.expr.pos, "Variable names must be specified.")
3323 for var, type_node in kwds.key_value_pairs:
3324 type = type_node.analyse_as_type(env)
3326 error(type_node.pos, "Unknown type")
3328 env.declare_var(var.value, type, var.pos, is_cdef = True)
3329 self.__class__ = PassStatNode
3331 def analyse_expressions(self, env):
3332 self.expr.analyse_expressions(env)
3334 def generate_execution_code(self, code):
3335 self.expr.generate_evaluation_code(code)
3336 if not self.expr.is_temp and self.expr.result():
3337 code.putln("%s;" % self.expr.result())
3338 self.expr.generate_disposal_code(code)
3339 self.expr.free_temps(code)
3341 def generate_function_definitions(self, env, code):
3342 self.expr.generate_function_definitions(env, code)
3344 def annotate(self, code):
3345 self.expr.annotate(code)
3348 class AssignmentNode(StatNode):
3349 # Abstract base class for assignment nodes.
3351 # The analyse_expressions and generate_execution_code
3352 # phases of assignments are split into two sub-phases
3353 # each, to enable all the right hand sides of a
3354 # parallel assignment to be evaluated before assigning
3355 # to any of the left hand sides.
3357 def analyse_expressions(self, env):
3358 self.analyse_types(env)
3360 # def analyse_expressions(self, env):
3361 # self.analyse_expressions_1(env)
3362 # self.analyse_expressions_2(env)
3364 def generate_execution_code(self, code):
3365 self.generate_rhs_evaluation_code(code)
3366 self.generate_assignment_code(code)
3369 class SingleAssignmentNode(AssignmentNode):
3370 # The simplest case:
3374 # lhs ExprNode Left hand side
3375 # rhs ExprNode Right hand side
3376 # first bool Is this guaranteed the first assignment to lhs?
3378 child_attrs = ["lhs", "rhs"]
3380 declaration_only = False
3382 def analyse_declarations(self, env):
3385 # handle declarations of the form x = cython.foo()
3386 if isinstance(self.rhs, ExprNodes.CallNode):
3387 func_name = self.rhs.function.as_cython_attribute()
3389 args, kwds = self.rhs.explicit_args_kwds()
3391 if func_name in ['declare', 'typedef']:
3392 if len(args) > 2 or kwds is not None:
3393 error(self.rhs.pos, "Can only declare one type at a time.")
3395 type = args[0].analyse_as_type(env)
3397 error(args[0].pos, "Unknown type")
3400 if func_name == 'declare':
3401 if isinstance(lhs, ExprNodes.NameNode):
3402 vars = [(lhs.name, lhs.pos)]
3403 elif isinstance(lhs, ExprNodes.TupleNode):
3404 vars = [(var.name, var.pos) for var in lhs.args]
3406 error(lhs.pos, "Invalid declaration")
3408 for var, pos in vars:
3409 env.declare_var(var, type, pos, is_cdef = True)
3414 self.declaration_only = True
3416 self.declaration_only = True
3417 if not isinstance(lhs, ExprNodes.NameNode):
3418 error(lhs.pos, "Invalid declaration.")
3419 env.declare_typedef(lhs.name, type, self.pos, visibility='private')
3421 elif func_name in ['struct', 'union']:
3422 self.declaration_only = True
3423 if len(args) > 0 or kwds is None:
3424 error(self.rhs.pos, "Struct or union members must be given by name.")
3427 for member, type_node in kwds.key_value_pairs:
3428 type = type_node.analyse_as_type(env)
3430 error(type_node.pos, "Unknown type")
3432 members.append((member.value, type, member.pos))
3433 if len(members) < len(kwds.key_value_pairs):
3435 if not isinstance(self.lhs, ExprNodes.NameNode):
3436 error(self.lhs.pos, "Invalid declaration.")
3437 name = self.lhs.name
3438 scope = StructOrUnionScope(name)
3439 env.declare_struct_or_union(name, func_name, scope, False, self.rhs.pos)
3440 for member, type, pos in members:
3441 scope.declare_var(member, type, pos)
3443 if self.declaration_only:
3446 self.lhs.analyse_target_declaration(env)
3448 def analyse_types(self, env, use_temp = 0):
3449 self.rhs.analyse_types(env)
3450 self.lhs.analyse_target_types(env)
3451 self.lhs.gil_assignment_check(env)
3452 self.rhs = self.rhs.coerce_to(self.lhs.type, env)
3454 self.rhs = self.rhs.coerce_to_temp(env)
3456 def generate_rhs_evaluation_code(self, code):
3457 self.rhs.generate_evaluation_code(code)
3459 def generate_assignment_code(self, code):
3460 self.lhs.generate_assignment_code(self.rhs, code)
3462 def generate_function_definitions(self, env, code):
3463 self.rhs.generate_function_definitions(env, code)
3465 def annotate(self, code):
3466 self.lhs.annotate(code)
3467 self.rhs.annotate(code)
3470 class CascadedAssignmentNode(AssignmentNode):
3471 # An assignment with multiple left hand sides:
3475 # lhs_list [ExprNode] Left hand sides
3476 # rhs ExprNode Right hand sides
3480 # coerced_rhs_list [ExprNode] RHS coerced to type of each LHS
3482 child_attrs = ["lhs_list", "rhs", "coerced_rhs_list"]
3483 coerced_rhs_list = None
3485 def analyse_declarations(self, env):
3486 for lhs in self.lhs_list:
3487 lhs.analyse_target_declaration(env)
3489 def analyse_types(self, env, use_temp = 0):
3490 self.rhs.analyse_types(env)
3491 if not self.rhs.is_simple():
3493 self.rhs = self.rhs.coerce_to_temp(env)
3495 self.rhs = self.rhs.coerce_to_simple(env)
3496 from ExprNodes import CloneNode
3497 self.coerced_rhs_list = []
3498 for lhs in self.lhs_list:
3499 lhs.analyse_target_types(env)
3500 lhs.gil_assignment_check(env)
3501 rhs = CloneNode(self.rhs)
3502 rhs = rhs.coerce_to(lhs.type, env)
3503 self.coerced_rhs_list.append(rhs)
3505 def generate_rhs_evaluation_code(self, code):
3506 self.rhs.generate_evaluation_code(code)
3508 def generate_assignment_code(self, code):
3509 for i in range(len(self.lhs_list)):
3510 lhs = self.lhs_list[i]
3511 rhs = self.coerced_rhs_list[i]
3512 rhs.generate_evaluation_code(code)
3513 lhs.generate_assignment_code(rhs, code)
3514 # Assignment has disposed of the cloned RHS
3515 self.rhs.generate_disposal_code(code)
3516 self.rhs.free_temps(code)
3518 def generate_function_definitions(self, env, code):
3519 self.rhs.generate_function_definitions(env, code)
3521 def annotate(self, code):
3522 for i in range(len(self.lhs_list)):
3523 lhs = self.lhs_list[i].annotate(code)
3524 rhs = self.coerced_rhs_list[i].annotate(code)
3525 self.rhs.annotate(code)
3528 class ParallelAssignmentNode(AssignmentNode):
3529 # A combined packing/unpacking assignment:
3533 # This has been rearranged by the parser into
3535 # a = d ; b = e ; c = f
3537 # but we must evaluate all the right hand sides
3538 # before assigning to any of the left hand sides.
3540 # stats [AssignmentNode] The constituent assignments
3542 child_attrs = ["stats"]
3544 def analyse_declarations(self, env):
3545 for stat in self.stats:
3546 stat.analyse_declarations(env)
3548 def analyse_expressions(self, env):
3549 for stat in self.stats:
3550 stat.analyse_types(env, use_temp = 1)
3552 # def analyse_expressions(self, env):
3553 # for stat in self.stats:
3554 # stat.analyse_expressions_1(env, use_temp = 1)
3555 # for stat in self.stats:
3556 # stat.analyse_expressions_2(env)
3558 def generate_execution_code(self, code):
3559 for stat in self.stats:
3560 stat.generate_rhs_evaluation_code(code)
3561 for stat in self.stats:
3562 stat.generate_assignment_code(code)
3564 def generate_function_definitions(self, env, code):
3565 for stat in self.stats:
3566 stat.generate_function_definitions(env, code)
3568 def annotate(self, code):
3569 for stat in self.stats:
3573 class InPlaceAssignmentNode(AssignmentNode):
3574 # An in place arithmetic operand:
3580 # lhs ExprNode Left hand side
3581 # rhs ExprNode Right hand side
3582 # op char one of "+-*/%^&|"
3583 # dup (ExprNode) copy of lhs used for operation (auto-generated)
3585 # This code is a bit tricky because in order to obey Python
3586 # semantics the sub-expressions (e.g. indices) of the lhs must
3587 # not be evaluated twice. So we must re-use the values calculated
3588 # in evaluation phase for the assignment phase as well.
3589 # Fortunately, the type of the lhs node is fairly constrained
3590 # (it must be a NameNode, AttributeNode, or IndexNode).
3592 child_attrs = ["lhs", "rhs"]
3594 def analyse_declarations(self, env):
3595 self.lhs.analyse_target_declaration(env)
3597 def analyse_types(self, env):
3598 self.rhs.analyse_types(env)
3599 self.lhs.analyse_target_types(env)
3601 def generate_execution_code(self, code):
3603 self.rhs.generate_evaluation_code(code)
3604 self.lhs.generate_subexpr_evaluation_code(code)
3605 c_op = self.operator
3609 error(self.pos, "No C inplace power operator")
3610 if isinstance(self.lhs, ExprNodes.IndexNode) and self.lhs.is_buffer_access:
3611 if self.lhs.type.is_pyobject:
3612 error(self.pos, "In-place operators not allowed on object buffers in this release.")
3613 if c_op in ('/', '%') and self.lhs.type.is_int and not code.directives['cdivision']:
3614 error(self.pos, "In-place non-c divide operators not allowed on int buffers.")
3615 self.lhs.generate_buffer_setitem_code(self.rhs, code, c_op)
3618 # TODO: make sure overload is declared
3619 code.putln("%s %s= %s;" % (self.lhs.result(), c_op, self.rhs.result()))
3620 self.lhs.generate_subexpr_disposal_code(code)
3621 self.lhs.free_subexpr_temps(code)
3622 self.rhs.generate_disposal_code(code)
3623 self.rhs.free_temps(code)
3625 def annotate(self, code):
3626 self.lhs.annotate(code)
3627 self.rhs.annotate(code)
3629 def create_binop_node(self):
3631 return ExprNodes.binop_node(self.pos, self.operator, self.lhs, self.rhs)
3634 class PrintStatNode(StatNode):
3637 # arg_tuple TupleNode
3638 # stream ExprNode or None (stdout)
3639 # append_newline boolean
3641 child_attrs = ["arg_tuple", "stream"]
3643 def analyse_expressions(self, env):
3645 self.stream.analyse_expressions(env)
3646 self.stream = self.stream.coerce_to_pyobject(env)
3647 self.arg_tuple.analyse_expressions(env)
3648 self.arg_tuple = self.arg_tuple.coerce_to_pyobject(env)
3649 env.use_utility_code(printing_utility_code)
3650 if len(self.arg_tuple.args) == 1 and self.append_newline:
3651 env.use_utility_code(printing_one_utility_code)
3653 nogil_check = Node.gil_error
3654 gil_message = "Python print statement"
3656 def generate_execution_code(self, code):
3658 self.stream.generate_evaluation_code(code)
3659 stream_result = self.stream.py_result()
3662 if len(self.arg_tuple.args) == 1 and self.append_newline:
3663 arg = self.arg_tuple.args[0]
3664 arg.generate_evaluation_code(code)
3667 "if (__Pyx_PrintOne(%s, %s) < 0) %s" % (
3670 code.error_goto(self.pos)))
3671 arg.generate_disposal_code(code)
3672 arg.free_temps(code)
3674 self.arg_tuple.generate_evaluation_code(code)
3676 "if (__Pyx_Print(%s, %s, %d) < 0) %s" % (
3678 self.arg_tuple.py_result(),
3679 self.append_newline,
3680 code.error_goto(self.pos)))
3681 self.arg_tuple.generate_disposal_code(code)
3682 self.arg_tuple.free_temps(code)
3685 self.stream.generate_disposal_code(code)
3686 self.stream.free_temps(code)
3688 def generate_function_definitions(self, env, code):
3690 self.stream.generate_function_definitions(env, code)
3691 self.arg_tuple.generate_function_definitions(env, code)
3693 def annotate(self, code):
3695 self.stream.annotate(code)
3696 self.arg_tuple.annotate(code)
3699 class ExecStatNode(StatNode):
3704 child_attrs = ["args"]
3706 def analyse_expressions(self, env):
3707 for i, arg in enumerate(self.args):
3708 arg.analyse_expressions(env)
3709 arg = arg.coerce_to_pyobject(env)
3711 env.use_utility_code(Builtin.pyexec_utility_code)
3713 nogil_check = Node.gil_error
3714 gil_message = "Python exec statement"
3716 def generate_execution_code(self, code):
3718 for arg in self.args:
3719 arg.generate_evaluation_code(code)
3720 args.append( arg.py_result() )
3721 args = tuple(args + ['0', '0'][:3-len(args)])
3722 temp_result = code.funcstate.allocate_temp(PyrexTypes.py_object_type, manage_ref=True)
3723 code.putln("%s = __Pyx_PyRun(%s, %s, %s);" % (
3724 (temp_result,) + args))
3725 for arg in self.args:
3726 arg.generate_disposal_code(code)
3727 arg.free_temps(code)
3729 code.error_goto_if_null(temp_result, self.pos))
3730 code.put_gotref(temp_result)
3731 code.put_decref_clear(temp_result, py_object_type)
3732 code.funcstate.release_temp(temp_result)
3734 def annotate(self, code):
3735 for arg in self.args:
3739 class DelStatNode(StatNode):
3744 child_attrs = ["args"]
3746 def analyse_declarations(self, env):
3747 for arg in self.args:
3748 arg.analyse_target_declaration(env)
3750 def analyse_expressions(self, env):
3751 for arg in self.args:
3752 arg.analyse_target_expression(env, None)
3753 if arg.type.is_pyobject:
3755 elif arg.type.is_ptr and arg.type.base_type.is_cpp_class:
3757 elif arg.type.is_cpp_class:
3758 error(arg.pos, "Deletion of non-heap C++ object")
3760 error(arg.pos, "Deletion of non-Python, non-C++ object")
3761 #arg.release_target_temp(env)
3763 def nogil_check(self, env):
3764 for arg in self.args:
3765 if arg.type.is_pyobject:
3768 gil_message = "Deleting Python object"
3770 def generate_execution_code(self, code):
3771 for arg in self.args:
3772 if arg.type.is_pyobject:
3773 arg.generate_deletion_code(code)
3774 elif arg.type.is_ptr and arg.type.base_type.is_cpp_class:
3775 arg.generate_result_code(code)
3776 code.putln("delete %s;" % arg.result())
3777 # else error reported earlier
3779 def annotate(self, code):
3780 for arg in self.args:
3784 class PassStatNode(StatNode):
3789 def analyse_expressions(self, env):
3792 def generate_execution_code(self, code):
3796 class BreakStatNode(StatNode):
3800 def analyse_expressions(self, env):
3803 def generate_execution_code(self, code):
3804 if not code.break_label:
3805 error(self.pos, "break statement not inside loop")
3807 code.put_goto(code.break_label)
3810 class ContinueStatNode(StatNode):
3814 def analyse_expressions(self, env):
3817 def generate_execution_code(self, code):
3818 if code.funcstate.in_try_finally:
3819 error(self.pos, "continue statement inside try of try...finally")
3820 elif not code.continue_label:
3821 error(self.pos, "continue statement not inside loop")
3823 code.put_goto(code.continue_label)
3826 class ReturnStatNode(StatNode):
3829 # value ExprNode or None
3830 # return_type PyrexType
3832 child_attrs = ["value"]
3834 def analyse_expressions(self, env):
3835 return_type = env.return_type
3836 self.return_type = return_type
3838 error(self.pos, "Return not inside a function body")
3841 self.value.analyse_types(env)
3842 if return_type.is_void or return_type.is_returncode:
3843 error(self.value.pos,
3844 "Return with value in void function")
3846 self.value = self.value.coerce_to(env.return_type, env)
3848 if (not return_type.is_void
3849 and not return_type.is_pyobject
3850 and not return_type.is_returncode):
3851 error(self.pos, "Return value required")
3853 def nogil_check(self, env):
3854 if self.return_type.is_pyobject:
3857 gil_message = "Returning Python object"
3859 def generate_execution_code(self, code):
3860 code.mark_pos(self.pos)
3861 if not self.return_type:
3862 # error reported earlier
3864 if self.return_type.is_pyobject:
3865 code.put_xdecref(Naming.retval_cname,
3868 self.value.generate_evaluation_code(code)
3869 self.value.make_owned_reference(code)
3872 Naming.retval_cname,
3873 self.value.result_as(self.return_type)))
3874 self.value.generate_post_assignment_code(code)
3875 self.value.free_temps(code)
3877 if self.return_type.is_pyobject:
3878 code.put_init_to_py_none(Naming.retval_cname, self.return_type)
3879 elif self.return_type.is_returncode:
3882 Naming.retval_cname,
3883 self.return_type.default_value))
3884 for cname, type in code.funcstate.temps_holding_reference():
3885 code.put_decref_clear(cname, type)
3886 code.put_goto(code.return_label)
3888 def generate_function_definitions(self, env, code):
3889 if self.value is not None:
3890 self.value.generate_function_definitions(env, code)
3892 def annotate(self, code):
3894 self.value.annotate(code)
3897 class RaiseStatNode(StatNode):
3900 # exc_type ExprNode or None
3901 # exc_value ExprNode or None
3902 # exc_tb ExprNode or None
3904 child_attrs = ["exc_type", "exc_value", "exc_tb"]
3906 def analyse_expressions(self, env):
3908 self.exc_type.analyse_types(env)
3909 self.exc_type = self.exc_type.coerce_to_pyobject(env)
3911 self.exc_value.analyse_types(env)
3912 self.exc_value = self.exc_value.coerce_to_pyobject(env)
3914 self.exc_tb.analyse_types(env)
3915 self.exc_tb = self.exc_tb.coerce_to_pyobject(env)
3916 env.use_utility_code(raise_utility_code)
3918 nogil_check = Node.gil_error
3919 gil_message = "Raising exception"
3921 def generate_execution_code(self, code):
3923 self.exc_type.generate_evaluation_code(code)
3924 type_code = self.exc_type.py_result()
3928 self.exc_value.generate_evaluation_code(code)
3929 value_code = self.exc_value.py_result()
3933 self.exc_tb.generate_evaluation_code(code)
3934 tb_code = self.exc_tb.py_result()
3938 "__Pyx_Raise(%s, %s, %s);" % (
3942 for obj in (self.exc_type, self.exc_value, self.exc_tb):
3944 obj.generate_disposal_code(code)
3945 obj.free_temps(code)
3947 code.error_goto(self.pos))
3949 def generate_function_definitions(self, env, code):
3950 if self.exc_type is not None:
3951 self.exc_type.generate_function_definitions(env, code)
3952 if self.exc_value is not None:
3953 self.exc_value.generate_function_definitions(env, code)
3954 if self.exc_tb is not None:
3955 self.exc_tb.generate_function_definitions(env, code)
3957 def annotate(self, code):
3959 self.exc_type.annotate(code)
3961 self.exc_value.annotate(code)
3963 self.exc_tb.annotate(code)
3966 class ReraiseStatNode(StatNode):
3970 def analyse_expressions(self, env):
3971 env.use_utility_code(restore_exception_utility_code)
3973 nogil_check = Node.gil_error
3974 gil_message = "Raising exception"
3976 def generate_execution_code(self, code):
3977 vars = code.funcstate.exc_vars
3979 for varname in vars:
3980 code.put_giveref(varname)
3981 code.putln("__Pyx_ErrRestore(%s, %s, %s);" % tuple(vars))
3982 for varname in vars:
3983 code.put("%s = 0; " % varname)
3985 code.putln(code.error_goto(self.pos))
3987 error(self.pos, "Reraise not inside except clause")
3990 class AssertStatNode(StatNode):
3994 # value ExprNode or None
3996 child_attrs = ["cond", "value"]
3998 def analyse_expressions(self, env):
3999 self.cond = self.cond.analyse_boolean_expression(env)
4001 self.value.analyse_types(env)
4002 self.value = self.value.coerce_to_pyobject(env)
4004 nogil_check = Node.gil_error
4005 gil_message = "Raising exception"
4007 def generate_execution_code(self, code):
4008 code.putln("#ifndef CYTHON_WITHOUT_ASSERTIONS")
4009 self.cond.generate_evaluation_code(code)
4011 "if (unlikely(!%s)) {" %
4014 self.value.generate_evaluation_code(code)
4016 "PyErr_SetObject(PyExc_AssertionError, %s);" %
4017 self.value.py_result())
4018 self.value.generate_disposal_code(code)
4019 self.value.free_temps(code)
4022 "PyErr_SetNone(PyExc_AssertionError);")
4024 code.error_goto(self.pos))
4027 self.cond.generate_disposal_code(code)
4028 self.cond.free_temps(code)
4029 code.putln("#endif")
4031 def generate_function_definitions(self, env, code):
4032 self.cond.generate_function_definitions(env, code)
4033 if self.value is not None:
4034 self.value.generate_function_definitions(env, code)
4036 def annotate(self, code):
4037 self.cond.annotate(code)
4039 self.value.annotate(code)
4042 class IfStatNode(StatNode):
4045 # if_clauses [IfClauseNode]
4046 # else_clause StatNode or None
4048 child_attrs = ["if_clauses", "else_clause"]
4050 def analyse_control_flow(self, env):
4051 env.start_branching(self.pos)
4052 for if_clause in self.if_clauses:
4053 if_clause.analyse_control_flow(env)
4054 env.next_branch(if_clause.end_pos())
4055 if self.else_clause:
4056 self.else_clause.analyse_control_flow(env)
4057 env.finish_branching(self.end_pos())
4059 def analyse_declarations(self, env):
4060 for if_clause in self.if_clauses:
4061 if_clause.analyse_declarations(env)
4062 if self.else_clause:
4063 self.else_clause.analyse_declarations(env)
4065 def analyse_expressions(self, env):
4066 for if_clause in self.if_clauses:
4067 if_clause.analyse_expressions(env)
4068 if self.else_clause:
4069 self.else_clause.analyse_expressions(env)
4071 def generate_execution_code(self, code):
4072 code.mark_pos(self.pos)
4073 end_label = code.new_label()
4074 for if_clause in self.if_clauses:
4075 if_clause.generate_execution_code(code, end_label)
4076 if self.else_clause:
4077 code.putln("/*else*/ {")
4078 self.else_clause.generate_execution_code(code)
4080 code.put_label(end_label)
4082 def generate_function_definitions(self, env, code):
4083 for clause in self.if_clauses:
4084 clause.generate_function_definitions(env, code)
4085 if self.else_clause is not None:
4086 self.else_clause.generate_function_definitions(env, code)
4088 def annotate(self, code):
4089 for if_clause in self.if_clauses:
4090 if_clause.annotate(code)
4091 if self.else_clause:
4092 self.else_clause.annotate(code)
4095 class IfClauseNode(Node):
4096 # if or elif clause in an if statement
4098 # condition ExprNode
4101 child_attrs = ["condition", "body"]
4103 def analyse_control_flow(self, env):
4104 self.body.analyse_control_flow(env)
4106 def analyse_declarations(self, env):
4107 self.body.analyse_declarations(env)
4109 def analyse_expressions(self, env):
4111 self.condition.analyse_temp_boolean_expression(env)
4112 self.body.analyse_expressions(env)
4114 def get_constant_condition_result(self):
4115 if self.condition.has_constant_result():
4116 return bool(self.condition.constant_result)
4120 def generate_execution_code(self, code, end_label):
4121 self.condition.generate_evaluation_code(code)
4124 self.condition.result())
4125 self.condition.generate_disposal_code(code)
4126 self.condition.free_temps(code)
4127 self.body.generate_execution_code(code)
4128 code.put_goto(end_label)
4131 def generate_function_definitions(self, env, code):
4132 self.condition.generate_function_definitions(env, code)
4133 self.body.generate_function_definitions(env, code)
4135 def annotate(self, code):
4136 self.condition.annotate(code)
4137 self.body.annotate(code)
4140 class SwitchCaseNode(StatNode):
4141 # Generated in the optimization of an if-elif-else node
4143 # conditions [ExprNode]
4146 child_attrs = ['conditions', 'body']
4148 def generate_execution_code(self, code):
4149 for cond in self.conditions:
4150 code.mark_pos(cond.pos)
4151 cond.generate_evaluation_code(code)
4152 code.putln("case %s:" % cond.result())
4153 self.body.generate_execution_code(code)
4154 code.putln("break;")
4156 def generate_function_definitions(self, env, code):
4157 for cond in self.conditions:
4158 cond.generate_function_definitions(env, code)
4159 self.body.generate_function_definitions(env, code)
4161 def annotate(self, code):
4162 for cond in self.conditions:
4164 self.body.annotate(code)
4166 class SwitchStatNode(StatNode):
4167 # Generated in the optimization of an if-elif-else node
4170 # cases [SwitchCaseNode]
4171 # else_clause StatNode or None
4173 child_attrs = ['test', 'cases', 'else_clause']
4175 def generate_execution_code(self, code):
4176 self.test.generate_evaluation_code(code)
4177 code.putln("switch (%s) {" % self.test.result())
4178 for case in self.cases:
4179 case.generate_execution_code(code)
4180 if self.else_clause is not None:
4181 code.putln("default:")
4182 self.else_clause.generate_execution_code(code)
4183 code.putln("break;")
4186 def generate_function_definitions(self, env, code):
4187 self.test.generate_function_definitions(env, code)
4188 for case in self.cases:
4189 case.generate_function_definitions(env, code)
4190 if self.else_clause is not None:
4191 self.else_clause.generate_function_definitions(env, code)
4193 def annotate(self, code):
4194 self.test.annotate(code)
4195 for case in self.cases:
4197 if self.else_clause is not None:
4198 self.else_clause.annotate(code)
4200 class LoopNode(object):
4202 def analyse_control_flow(self, env):
4203 env.start_branching(self.pos)
4204 self.body.analyse_control_flow(env)
4205 env.next_branch(self.body.end_pos())
4206 if self.else_clause:
4207 self.else_clause.analyse_control_flow(env)
4208 env.finish_branching(self.end_pos())
4211 class WhileStatNode(LoopNode, StatNode):
4214 # condition ExprNode
4216 # else_clause StatNode
4218 child_attrs = ["condition", "body", "else_clause"]
4220 def analyse_declarations(self, env):
4221 self.body.analyse_declarations(env)
4222 if self.else_clause:
4223 self.else_clause.analyse_declarations(env)
4225 def analyse_expressions(self, env):
4227 self.condition.analyse_temp_boolean_expression(env)
4228 self.body.analyse_expressions(env)
4229 if self.else_clause:
4230 self.else_clause.analyse_expressions(env)
4232 def generate_execution_code(self, code):
4233 old_loop_labels = code.new_loop_labels()
4236 self.condition.generate_evaluation_code(code)
4237 self.condition.generate_disposal_code(code)
4240 self.condition.result())
4241 self.condition.free_temps(code)
4242 self.body.generate_execution_code(code)
4243 code.put_label(code.continue_label)
4245 break_label = code.break_label
4246 code.set_loop_labels(old_loop_labels)
4247 if self.else_clause:
4248 code.putln("/*else*/ {")
4249 self.else_clause.generate_execution_code(code)
4251 code.put_label(break_label)
4253 def generate_function_definitions(self, env, code):
4254 self.condition.generate_function_definitions(env, code)
4255 self.body.generate_function_definitions(env, code)
4256 if self.else_clause is not None:
4257 self.else_clause.generate_function_definitions(env, code)
4259 def annotate(self, code):
4260 self.condition.annotate(code)
4261 self.body.annotate(code)
4262 if self.else_clause:
4263 self.else_clause.annotate(code)
4266 def ForStatNode(pos, **kw):
4267 if 'iterator' in kw:
4268 return ForInStatNode(pos, **kw)
4270 return ForFromStatNode(pos, **kw)
4272 class ForInStatNode(LoopNode, StatNode):
4276 # iterator IteratorNode
4278 # else_clause StatNode
4279 # item NextNode used internally
4281 child_attrs = ["target", "iterator", "body", "else_clause"]
4284 def analyse_declarations(self, env):
4285 self.target.analyse_target_declaration(env)
4286 self.body.analyse_declarations(env)
4287 if self.else_clause:
4288 self.else_clause.analyse_declarations(env)
4290 def analyse_expressions(self, env):
4292 self.target.analyse_target_types(env)
4293 self.iterator.analyse_expressions(env)
4294 self.item = ExprNodes.NextNode(self.iterator, env)
4295 self.item = self.item.coerce_to(self.target.type, env)
4296 self.body.analyse_expressions(env)
4297 if self.else_clause:
4298 self.else_clause.analyse_expressions(env)
4300 def generate_execution_code(self, code):
4301 old_loop_labels = code.new_loop_labels()
4302 self.iterator.allocate_counter_temp(code)
4303 self.iterator.generate_evaluation_code(code)
4306 self.item.generate_evaluation_code(code)
4307 self.target.generate_assignment_code(self.item, code)
4308 self.body.generate_execution_code(code)
4309 code.put_label(code.continue_label)
4312 break_label = code.break_label
4313 code.set_loop_labels(old_loop_labels)
4315 if self.else_clause:
4316 # in nested loops, the 'else' block can contain a
4317 # 'continue' statement for the outer loop, but we may need
4318 # to generate cleanup code before taking that path, so we
4320 orig_continue_label = code.continue_label
4321 code.continue_label = code.new_label('outer_continue')
4323 code.putln("/*else*/ {")
4324 self.else_clause.generate_execution_code(code)
4327 if code.label_used(code.continue_label):
4328 code.put_goto(break_label)
4329 code.put_label(code.continue_label)
4330 self.iterator.generate_disposal_code(code)
4331 code.put_goto(orig_continue_label)
4332 code.set_loop_labels(old_loop_labels)
4334 if code.label_used(break_label):
4335 code.put_label(break_label)
4336 self.iterator.release_counter_temp(code)
4337 self.iterator.generate_disposal_code(code)
4338 self.iterator.free_temps(code)
4340 def generate_function_definitions(self, env, code):
4341 self.target.generate_function_definitions(env, code)
4342 self.iterator.generate_function_definitions(env, code)
4343 self.body.generate_function_definitions(env, code)
4344 if self.else_clause is not None:
4345 self.else_clause.generate_function_definitions(env, code)
4347 def annotate(self, code):
4348 self.target.annotate(code)
4349 self.iterator.annotate(code)
4350 self.body.annotate(code)
4351 if self.else_clause:
4352 self.else_clause.annotate(code)
4353 self.item.annotate(code)
4356 class ForFromStatNode(LoopNode, StatNode):
4357 # for name from expr rel name rel expr
4364 # step ExprNode or None
4366 # else_clause StatNode or None
4372 # loopvar_node ExprNode (usually a NameNode or temp node)
4373 # py_loopvar_node PyTempNode or None
4374 child_attrs = ["target", "bound1", "bound2", "step", "body", "else_clause"]
4376 is_py_target = False
4378 py_loopvar_node = None
4381 gil_message = "For-loop using object bounds or target"
4383 def nogil_check(self, env):
4384 for x in (self.target, self.bound1, self.bound2):
4385 if x.type.is_pyobject:
4388 def analyse_declarations(self, env):
4389 self.target.analyse_target_declaration(env)
4390 self.body.analyse_declarations(env)
4391 if self.else_clause:
4392 self.else_clause.analyse_declarations(env)
4394 def analyse_expressions(self, env):
4396 self.target.analyse_target_types(env)
4397 self.bound1.analyse_types(env)
4398 self.bound2.analyse_types(env)
4399 if self.step is not None:
4400 if isinstance(self.step, ExprNodes.UnaryMinusNode):
4401 warning(self.step.pos, "Probable infinite loop in for-from-by statment. Consider switching the directions of the relations.", 2)
4402 self.step.analyse_types(env)
4404 target_type = self.target.type
4405 if self.target.type.is_numeric:
4406 loop_type = self.target.type
4408 loop_type = PyrexTypes.c_int_type
4409 if not self.bound1.type.is_pyobject:
4410 loop_type = PyrexTypes.widest_numeric_type(loop_type, self.bound1.type)
4411 if not self.bound2.type.is_pyobject:
4412 loop_type = PyrexTypes.widest_numeric_type(loop_type, self.bound2.type)
4413 if self.step is not None and not self.step.type.is_pyobject:
4414 loop_type = PyrexTypes.widest_numeric_type(loop_type, self.step.type)
4415 self.bound1 = self.bound1.coerce_to(loop_type, env)
4416 self.bound2 = self.bound2.coerce_to(loop_type, env)
4417 if not self.bound2.is_literal:
4418 self.bound2 = self.bound2.coerce_to_temp(env)
4419 if self.step is not None:
4420 self.step = self.step.coerce_to(loop_type, env)
4421 if not self.step.is_literal:
4422 self.step = self.step.coerce_to_temp(env)
4424 target_type = self.target.type
4425 if not (target_type.is_pyobject or target_type.is_numeric):
4426 error(self.target.pos,
4427 "for-from loop variable must be c numeric type or Python object")
4428 if target_type.is_numeric:
4429 self.is_py_target = False
4430 if isinstance(self.target, ExprNodes.IndexNode) and self.target.is_buffer_access:
4431 raise error(self.pos, "Buffer indexing not allowed as for loop target.")
4432 self.loopvar_node = self.target
4433 self.py_loopvar_node = None
4435 self.is_py_target = True
4436 c_loopvar_node = ExprNodes.TempNode(self.pos, loop_type, env)
4437 self.loopvar_node = c_loopvar_node
4438 self.py_loopvar_node = \
4439 ExprNodes.CloneNode(c_loopvar_node).coerce_to_pyobject(env)
4440 self.body.analyse_expressions(env)
4441 if self.else_clause:
4442 self.else_clause.analyse_expressions(env)
4444 def generate_execution_code(self, code):
4445 old_loop_labels = code.new_loop_labels()
4446 from_range = self.from_range
4447 self.bound1.generate_evaluation_code(code)
4448 self.bound2.generate_evaluation_code(code)
4449 offset, incop = self.relation_table[self.relation1]
4450 if self.step is not None:
4451 self.step.generate_evaluation_code(code)
4452 step = self.step.result()
4453 incop = "%s=%s" % (incop[0], step)
4455 if isinstance(self.loopvar_node, ExprNodes.TempNode):
4456 self.loopvar_node.allocate(code)
4457 if isinstance(self.py_loopvar_node, ExprNodes.TempNode):
4458 self.py_loopvar_node.allocate(code)
4460 loopvar_name = code.funcstate.allocate_temp(self.target.type, False)
4462 loopvar_name = self.loopvar_node.result()
4464 "for (%s = %s%s; %s %s %s; %s%s) {" % (
4466 self.bound1.result(), offset,
4467 loopvar_name, self.relation2, self.bound2.result(),
4468 loopvar_name, incop))
4469 if self.py_loopvar_node:
4470 self.py_loopvar_node.generate_evaluation_code(code)
4471 self.target.generate_assignment_code(self.py_loopvar_node, code)
4473 code.putln("%s = %s;" % (
4474 self.target.result(), loopvar_name))
4475 self.body.generate_execution_code(code)
4476 code.put_label(code.continue_label)
4477 if self.py_loopvar_node:
4478 # This mess is to make for..from loops with python targets behave
4479 # exactly like those with C targets with regards to re-assignment
4480 # of the loop variable.
4482 if self.target.entry.is_pyglobal:
4483 # We know target is a NameNode, this is the only ugly case.
4484 target_node = ExprNodes.PyTempNode(self.target.pos, None)
4485 target_node.allocate(code)
4486 interned_cname = code.intern_identifier(self.target.entry.name)
4487 code.globalstate.use_utility_code(ExprNodes.get_name_interned_utility_code)
4488 code.putln("%s = __Pyx_GetName(%s, %s); %s" % (
4489 target_node.result(),
4490 Naming.module_cname,
4492 code.error_goto_if_null(target_node.result(), self.target.pos)))
4493 code.put_gotref(target_node.result())
4495 target_node = self.target
4496 from_py_node = ExprNodes.CoerceFromPyTypeNode(self.loopvar_node.type, target_node, None)
4497 from_py_node.temp_code = loopvar_name
4498 from_py_node.generate_result_code(code)
4499 if self.target.entry.is_pyglobal:
4500 code.put_decref(target_node.result(), target_node.type)
4501 target_node.release(code)
4503 if self.py_loopvar_node:
4504 # This is potentially wasteful, but we don't want the semantics to
4505 # depend on whether or not the loop is a python type.
4506 self.py_loopvar_node.generate_evaluation_code(code)
4507 self.target.generate_assignment_code(self.py_loopvar_node, code)
4509 code.funcstate.release_temp(loopvar_name)
4510 break_label = code.break_label
4511 code.set_loop_labels(old_loop_labels)
4512 if self.else_clause:
4513 code.putln("/*else*/ {")
4514 self.else_clause.generate_execution_code(code)
4516 code.put_label(break_label)
4517 self.bound1.generate_disposal_code(code)
4518 self.bound1.free_temps(code)
4519 self.bound2.generate_disposal_code(code)
4520 self.bound2.free_temps(code)
4521 if isinstance(self.loopvar_node, ExprNodes.TempNode):
4522 self.loopvar_node.release(code)
4523 if isinstance(self.py_loopvar_node, ExprNodes.TempNode):
4524 self.py_loopvar_node.release(code)
4525 if self.step is not None:
4526 self.step.generate_disposal_code(code)
4527 self.step.free_temps(code)
4530 # {relop : (initial offset, increment op)}
4537 def generate_function_definitions(self, env, code):
4538 self.target.generate_function_definitions(env, code)
4539 self.bound1.generate_function_definitions(env, code)
4540 self.bound2.generate_function_definitions(env, code)
4541 if self.step is not None:
4542 self.step.generate_function_definitions(env, code)
4543 self.body.generate_function_definitions(env, code)
4544 if self.else_clause is not None:
4545 self.else_clause.generate_function_definitions(env, code)
4547 def annotate(self, code):
4548 self.target.annotate(code)
4549 self.bound1.annotate(code)
4550 self.bound2.annotate(code)
4552 self.step.annotate(code)
4553 self.body.annotate(code)
4554 if self.else_clause:
4555 self.else_clause.annotate(code)
4558 class WithStatNode(StatNode):
4560 Represents a Python with statement.
4562 This is only used at parse tree level; and is not present in
4563 analysis or generation phases.
4565 # manager The with statement manager object
4566 # target Node (lhs expression)
4568 child_attrs = ["manager", "target", "body"]
4570 class TryExceptStatNode(StatNode):
4571 # try .. except statement
4574 # except_clauses [ExceptClauseNode]
4575 # else_clause StatNode or None
4577 child_attrs = ["body", "except_clauses", "else_clause"]
4579 def analyse_control_flow(self, env):
4580 env.start_branching(self.pos)
4581 self.body.analyse_control_flow(env)
4582 successful_try = env.control_flow # grab this for later
4583 env.next_branch(self.body.end_pos())
4584 env.finish_branching(self.body.end_pos())
4586 env.start_branching(self.except_clauses[0].pos)
4587 for except_clause in self.except_clauses:
4588 except_clause.analyse_control_flow(env)
4589 env.next_branch(except_clause.end_pos())
4591 # the else cause it executed only when the try clause finishes
4592 env.control_flow.incoming = successful_try
4593 if self.else_clause:
4594 self.else_clause.analyse_control_flow(env)
4595 env.finish_branching(self.end_pos())
4597 def analyse_declarations(self, env):
4598 self.body.analyse_declarations(env)
4599 for except_clause in self.except_clauses:
4600 except_clause.analyse_declarations(env)
4601 if self.else_clause:
4602 self.else_clause.analyse_declarations(env)
4603 env.use_utility_code(reset_exception_utility_code)
4605 def analyse_expressions(self, env):
4606 self.body.analyse_expressions(env)
4607 default_clause_seen = 0
4608 for except_clause in self.except_clauses:
4609 except_clause.analyse_expressions(env)
4610 if default_clause_seen:
4611 error(except_clause.pos, "default 'except:' must be last")
4612 if not except_clause.pattern:
4613 default_clause_seen = 1
4614 self.has_default_clause = default_clause_seen
4615 if self.else_clause:
4616 self.else_clause.analyse_expressions(env)
4618 nogil_check = Node.gil_error
4619 gil_message = "Try-except statement"
4621 def generate_execution_code(self, code):
4622 old_return_label = code.return_label
4623 old_break_label = code.break_label
4624 old_continue_label = code.continue_label
4625 old_error_label = code.new_error_label()
4626 our_error_label = code.error_label
4627 except_end_label = code.new_label('exception_handled')
4628 except_error_label = code.new_label('except_error')
4629 except_return_label = code.new_label('except_return')
4630 try_return_label = code.new_label('try_return')
4631 try_break_label = code.new_label('try_break')
4632 try_continue_label = code.new_label('try_continue')
4633 try_end_label = code.new_label('try_end')
4636 code.putln("PyObject %s;" %
4637 ', '.join(['*%s' % var for var in Naming.exc_save_vars]))
4638 code.putln("__Pyx_ExceptionSave(%s);" %
4639 ', '.join(['&%s' % var for var in Naming.exc_save_vars]))
4640 for var in Naming.exc_save_vars:
4641 code.put_xgotref(var)
4644 code.return_label = try_return_label
4645 code.break_label = try_break_label
4646 code.continue_label = try_continue_label
4647 self.body.generate_execution_code(code)
4650 temps_to_clean_up = code.funcstate.all_free_managed_temps()
4651 code.error_label = except_error_label
4652 code.return_label = except_return_label
4653 if self.else_clause:
4656 self.else_clause.generate_execution_code(code)
4659 for var in Naming.exc_save_vars:
4660 code.put_xdecref_clear(var, py_object_type)
4661 code.put_goto(try_end_label)
4662 if code.label_used(try_return_label):
4663 code.put_label(try_return_label)
4664 for var in Naming.exc_save_vars: code.put_xgiveref(var)
4665 code.putln("__Pyx_ExceptionReset(%s);" %
4666 ', '.join(Naming.exc_save_vars))
4667 code.put_goto(old_return_label)
4668 code.put_label(our_error_label)
4669 for temp_name, type in temps_to_clean_up:
4670 code.put_xdecref_clear(temp_name, type)
4671 for except_clause in self.except_clauses:
4672 except_clause.generate_handling_code(code, except_end_label)
4674 error_label_used = code.label_used(except_error_label)
4675 if error_label_used or not self.has_default_clause:
4676 if error_label_used:
4677 code.put_label(except_error_label)
4678 for var in Naming.exc_save_vars: code.put_xgiveref(var)
4679 code.putln("__Pyx_ExceptionReset(%s);" %
4680 ', '.join(Naming.exc_save_vars))
4681 code.put_goto(old_error_label)
4683 for exit_label, old_label in zip(
4684 [try_break_label, try_continue_label, except_return_label],
4685 [old_break_label, old_continue_label, old_return_label]):
4687 if code.label_used(exit_label):
4688 code.put_label(exit_label)
4689 for var in Naming.exc_save_vars: code.put_xgiveref(var)
4690 code.putln("__Pyx_ExceptionReset(%s);" %
4691 ', '.join(Naming.exc_save_vars))
4692 code.put_goto(old_label)
4694 if code.label_used(except_end_label):
4695 code.put_label(except_end_label)
4696 for var in Naming.exc_save_vars: code.put_xgiveref(var)
4697 code.putln("__Pyx_ExceptionReset(%s);" %
4698 ', '.join(Naming.exc_save_vars))
4699 code.put_label(try_end_label)
4702 code.return_label = old_return_label
4703 code.break_label = old_break_label
4704 code.continue_label = old_continue_label
4705 code.error_label = old_error_label
4707 def generate_function_definitions(self, env, code):
4708 self.body.generate_function_definitions(env, code)
4709 for except_clause in self.except_clauses:
4710 except_clause.generate_function_definitions(env, code)
4711 if self.else_clause is not None:
4712 self.else_clause.generate_function_definitions(env, code)
4714 def annotate(self, code):
4715 self.body.annotate(code)
4716 for except_node in self.except_clauses:
4717 except_node.annotate(code)
4718 if self.else_clause:
4719 self.else_clause.annotate(code)
4722 class ExceptClauseNode(Node):
4723 # Part of try ... except statement.
4725 # pattern [ExprNode]
4726 # target ExprNode or None
4728 # excinfo_target NameNode or None optional target for exception info
4729 # match_flag string result of exception match
4730 # exc_value ExcValueNode used internally
4731 # function_name string qualified name of enclosing function
4732 # exc_vars (string * 3) local exception variables
4734 # excinfo_target is never set by the parser, but can be set by a transform
4735 # in order to extract more extensive information about the exception as a
4736 # sys.exc_info()-style tuple into a target variable
4738 child_attrs = ["pattern", "target", "body", "exc_value", "excinfo_target"]
4741 excinfo_target = None
4743 def analyse_declarations(self, env):
4745 self.target.analyse_target_declaration(env)
4746 if self.excinfo_target is not None:
4747 self.excinfo_target.analyse_target_declaration(env)
4748 self.body.analyse_declarations(env)
4750 def analyse_expressions(self, env):
4752 genv = env.global_scope()
4753 self.function_name = env.qualified_name
4755 # normalise/unpack self.pattern into a list
4756 for i, pattern in enumerate(self.pattern):
4757 pattern.analyse_expressions(env)
4758 self.pattern[i] = pattern.coerce_to_pyobject(env)
4761 self.exc_value = ExprNodes.ExcValueNode(self.pos, env)
4762 self.target.analyse_target_expression(env, self.exc_value)
4763 if self.excinfo_target is not None:
4765 self.excinfo_tuple = ExprNodes.TupleNode(pos=self.pos, args=[
4766 ExprNodes.ExcValueNode(pos=self.pos, env=env) for x in range(3)])
4767 self.excinfo_tuple.analyse_expressions(env)
4768 self.excinfo_target.analyse_target_expression(env, self.excinfo_tuple)
4770 self.body.analyse_expressions(env)
4772 def generate_handling_code(self, code, end_label):
4773 code.mark_pos(self.pos)
4776 for pattern in self.pattern:
4777 pattern.generate_evaluation_code(code)
4778 exc_tests.append("PyErr_ExceptionMatches(%s)" % pattern.py_result())
4780 match_flag = code.funcstate.allocate_temp(PyrexTypes.c_int_type, False)
4782 "%s = %s;" % (match_flag, ' || '.join(exc_tests)))
4783 for pattern in self.pattern:
4784 pattern.generate_disposal_code(code)
4785 pattern.free_temps(code)
4789 code.funcstate.release_temp(match_flag)
4791 code.putln("/*except:*/ {")
4793 if not getattr(self.body, 'stats', True) and \
4794 self.excinfo_target is None and self.target is None:
4795 # most simple case: no exception variable, empty body (pass)
4796 # => reset the exception state, done
4797 code.putln("PyErr_Restore(0,0,0);")
4798 code.put_goto(end_label)
4802 exc_vars = [code.funcstate.allocate_temp(py_object_type,
4805 code.putln('__Pyx_AddTraceback("%s");' % self.function_name)
4806 # We always have to fetch the exception value even if
4807 # there is no target, because this also normalises the
4808 # exception and stores it in the thread state.
4809 code.globalstate.use_utility_code(get_exception_utility_code)
4810 exc_args = "&%s, &%s, &%s" % tuple(exc_vars)
4811 code.putln("if (__Pyx_GetException(%s) < 0) %s" % (exc_args,
4812 code.error_goto(self.pos)))
4816 self.exc_value.set_var(exc_vars[1])
4817 self.exc_value.generate_evaluation_code(code)
4818 self.target.generate_assignment_code(self.exc_value, code)
4819 if self.excinfo_target is not None:
4820 for tempvar, node in zip(exc_vars, self.excinfo_tuple.args):
4821 node.set_var(tempvar)
4822 self.excinfo_tuple.generate_evaluation_code(code)
4823 self.excinfo_target.generate_assignment_code(self.excinfo_tuple, code)
4825 old_break_label, old_continue_label = code.break_label, code.continue_label
4826 code.break_label = code.new_label('except_break')
4827 code.continue_label = code.new_label('except_continue')
4829 old_exc_vars = code.funcstate.exc_vars
4830 code.funcstate.exc_vars = exc_vars
4831 self.body.generate_execution_code(code)
4832 code.funcstate.exc_vars = old_exc_vars
4833 for var in exc_vars:
4834 code.putln("__Pyx_DECREF(%s); %s = 0;" % (var, var))
4835 code.put_goto(end_label)
4837 if code.label_used(code.break_label):
4838 code.put_label(code.break_label)
4839 for var in exc_vars:
4840 code.putln("__Pyx_DECREF(%s); %s = 0;" % (var, var))
4841 code.put_goto(old_break_label)
4842 code.break_label = old_break_label
4844 if code.label_used(code.continue_label):
4845 code.put_label(code.continue_label)
4846 for var in exc_vars:
4847 code.putln("__Pyx_DECREF(%s); %s = 0;" % (var, var))
4848 code.put_goto(old_continue_label)
4849 code.continue_label = old_continue_label
4851 for temp in exc_vars:
4852 code.funcstate.release_temp(temp)
4857 def generate_function_definitions(self, env, code):
4858 if self.target is not None:
4859 self.target.generate_function_definitions(env, code)
4860 self.body.generate_function_definitions(env, code)
4862 def annotate(self, code):
4864 for pattern in self.pattern:
4865 pattern.annotate(code)
4867 self.target.annotate(code)
4868 self.body.annotate(code)
4871 class TryFinallyStatNode(StatNode):
4872 # try ... finally statement
4875 # finally_clause StatNode
4877 # The plan is that we funnel all continue, break
4878 # return and error gotos into the beginning of the
4879 # finally block, setting a variable to remember which
4880 # one we're doing. At the end of the finally block, we
4881 # switch on the variable to figure out where to go.
4882 # In addition, if we're doing an error, we save the
4883 # exception on entry to the finally block and restore
4886 child_attrs = ["body", "finally_clause"]
4888 preserve_exception = 1
4890 disallow_continue_in_try_finally = 0
4891 # There doesn't seem to be any point in disallowing
4892 # continue in the try block, since we have no problem
4895 def create_analysed(pos, env, body, finally_clause):
4896 node = TryFinallyStatNode(pos, body=body, finally_clause=finally_clause)
4898 create_analysed = staticmethod(create_analysed)
4900 def analyse_control_flow(self, env):
4901 env.start_branching(self.pos)
4902 self.body.analyse_control_flow(env)
4903 env.next_branch(self.body.end_pos())
4904 env.finish_branching(self.body.end_pos())
4905 self.finally_clause.analyse_control_flow(env)
4907 def analyse_declarations(self, env):
4908 self.body.analyse_declarations(env)
4909 self.finally_clause.analyse_declarations(env)
4911 def analyse_expressions(self, env):
4912 self.body.analyse_expressions(env)
4913 self.finally_clause.analyse_expressions(env)
4915 nogil_check = Node.gil_error
4916 gil_message = "Try-finally statement"
4918 def generate_execution_code(self, code):
4919 old_error_label = code.error_label
4920 old_labels = code.all_new_labels()
4921 new_labels = code.get_all_labels()
4922 new_error_label = code.error_label
4923 catch_label = code.new_label()
4926 if self.disallow_continue_in_try_finally:
4927 was_in_try_finally = code.funcstate.in_try_finally
4928 code.funcstate.in_try_finally = 1
4929 self.body.generate_execution_code(code)
4930 if self.disallow_continue_in_try_finally:
4931 code.funcstate.in_try_finally = was_in_try_finally
4934 temps_to_clean_up = code.funcstate.all_free_managed_temps()
4935 code.mark_pos(self.finally_clause.pos)
4939 error_label_used = 0
4940 for i, new_label in enumerate(new_labels):
4941 if new_label in code.labels_used:
4942 cases_used.append(i)
4943 if new_label == new_error_label:
4944 error_label_used = 1
4945 error_label_case = i
4949 if error_label_used and self.preserve_exception:
4951 "PyObject *%s, *%s, *%s;" % Naming.exc_vars)
4953 "int %s;" % Naming.exc_lineno_name)
4954 exc_var_init_zero = ''.join(["%s = 0; " % var for var in Naming.exc_vars])
4955 exc_var_init_zero += '%s = 0;' % Naming.exc_lineno_name
4956 code.putln(exc_var_init_zero)
4958 exc_var_init_zero = None
4959 code.use_label(catch_label)
4961 "__pyx_why = 0; goto %s;" % catch_label)
4962 for i in cases_used:
4963 new_label = new_labels[i]
4964 #if new_label and new_label != "<try>":
4965 if new_label == new_error_label and self.preserve_exception:
4966 self.put_error_catcher(code,
4967 new_error_label, i+1, catch_label, temps_to_clean_up)
4969 code.put('%s: ' % new_label)
4970 if exc_var_init_zero:
4971 code.putln(exc_var_init_zero)
4972 code.putln("__pyx_why = %s; goto %s;" % (
4975 code.put_label(catch_label)
4976 code.set_all_labels(old_labels)
4977 if error_label_used:
4978 code.new_error_label()
4979 finally_error_label = code.error_label
4980 self.finally_clause.generate_execution_code(code)
4981 if error_label_used:
4982 if finally_error_label in code.labels_used and self.preserve_exception:
4983 over_label = code.new_label()
4984 code.put_goto(over_label);
4985 code.put_label(finally_error_label)
4986 code.putln("if (__pyx_why == %d) {" % (error_label_case + 1))
4987 for var in Naming.exc_vars:
4988 code.putln("Py_XDECREF(%s);" % var)
4990 code.put_goto(old_error_label)
4991 code.put_label(over_label)
4992 code.error_label = old_error_label
4995 "switch (__pyx_why) {")
4996 for i in cases_used:
4997 old_label = old_labels[i]
4998 if old_label == old_error_label and self.preserve_exception:
4999 self.put_error_uncatcher(code, i+1, old_error_label)
5001 code.use_label(old_label)
5003 "case %s: goto %s;" % (
5011 def generate_function_definitions(self, env, code):
5012 self.body.generate_function_definitions(env, code)
5013 self.finally_clause.generate_function_definitions(env, code)
5015 def put_error_catcher(self, code, error_label, i, catch_label, temps_to_clean_up):
5016 code.globalstate.use_utility_code(restore_exception_utility_code)
5023 for temp_name, type in temps_to_clean_up:
5024 code.put_xdecref_clear(temp_name, type)
5026 "__Pyx_ErrFetch(&%s, &%s, &%s);" %
5030 Naming.exc_lineno_name, Naming.lineno_cname))
5031 code.put_goto(catch_label)
5034 def put_error_uncatcher(self, code, i, error_label):
5035 code.globalstate.use_utility_code(restore_exception_utility_code)
5040 "__Pyx_ErrRestore(%s, %s, %s);" %
5044 Naming.lineno_cname, Naming.exc_lineno_name))
5045 for var in Naming.exc_vars:
5049 code.put_goto(error_label)
5053 def annotate(self, code):
5054 self.body.annotate(code)
5055 self.finally_clause.annotate(code)
5058 class GILStatNode(TryFinallyStatNode):
5059 # 'with gil' or 'with nogil' statement
5061 # state string 'gil' or 'nogil'
5065 preserve_exception = 0
5067 def __init__(self, pos, state, body):
5069 TryFinallyStatNode.__init__(self, pos,
5071 finally_clause = GILExitNode(pos, state = state))
5073 def analyse_expressions(self, env):
5074 env.use_utility_code(force_init_threads_utility_code)
5075 was_nogil = env.nogil
5077 TryFinallyStatNode.analyse_expressions(self, env)
5078 env.nogil = was_nogil
5082 def generate_execution_code(self, code):
5083 code.mark_pos(self.pos)
5085 if self.state == 'gil':
5086 code.putln("#ifdef WITH_THREAD")
5087 code.putln("PyGILState_STATE _save = PyGILState_Ensure();")
5088 code.putln("#endif")
5090 code.putln("#ifdef WITH_THREAD")
5091 code.putln("PyThreadState *_save;")
5092 code.putln("#endif")
5093 code.putln("Py_UNBLOCK_THREADS")
5094 TryFinallyStatNode.generate_execution_code(self, code)
5098 class GILExitNode(StatNode):
5099 # Used as the 'finally' block in a GILStatNode
5101 # state string 'gil' or 'nogil'
5105 def analyse_expressions(self, env):
5108 def generate_execution_code(self, code):
5109 if self.state == 'gil':
5110 code.putln("#ifdef WITH_THREAD")
5111 code.putln("PyGILState_Release(_save);")
5112 code.putln("#endif")
5114 code.putln("Py_BLOCK_THREADS")
5117 class CImportStatNode(StatNode):
5120 # module_name string Qualified name of module being imported
5121 # as_name string or None Name specified in "as" clause, if any
5125 def analyse_declarations(self, env):
5126 if not env.is_module_scope:
5127 error(self.pos, "cimport only allowed at module level")
5129 module_scope = env.find_module(self.module_name, self.pos)
5130 if "." in self.module_name:
5131 names = [EncodedString(name) for name in self.module_name.split(".")]
5133 top_module_scope = env.context.find_submodule(top_name)
5134 module_scope = top_module_scope
5135 for name in names[1:]:
5136 submodule_scope = module_scope.find_submodule(name)
5137 module_scope.declare_module(name, submodule_scope, self.pos)
5138 module_scope = submodule_scope
5140 env.declare_module(self.as_name, module_scope, self.pos)
5142 env.declare_module(top_name, top_module_scope, self.pos)
5144 name = self.as_name or self.module_name
5145 env.declare_module(name, module_scope, self.pos)
5147 def analyse_expressions(self, env):
5150 def generate_execution_code(self, code):
5154 class FromCImportStatNode(StatNode):
5155 # from ... cimport statement
5157 # module_name string Qualified name of module
5158 # imported_names [(pos, name, as_name, kind)] Names to be imported
5162 def analyse_declarations(self, env):
5163 if not env.is_module_scope:
5164 error(self.pos, "cimport only allowed at module level")
5166 module_scope = env.find_module(self.module_name, self.pos)
5167 env.add_imported_module(module_scope)
5168 for pos, name, as_name, kind in self.imported_names:
5170 for local_name, entry in module_scope.entries.items():
5171 env.add_imported_entry(local_name, entry, pos)
5173 entry = module_scope.lookup(name)
5175 if kind and not self.declaration_matches(entry, kind):
5176 entry.redeclared(pos)
5178 if kind == 'struct' or kind == 'union':
5179 entry = module_scope.declare_struct_or_union(name,
5180 kind = kind, scope = None, typedef_flag = 0, pos = pos)
5181 elif kind == 'class':
5182 entry = module_scope.declare_c_class(name, pos = pos,
5183 module_name = self.module_name)
5185 submodule_scope = env.context.find_module(name, relative_to = module_scope, pos = self.pos)
5186 if submodule_scope.parent_module is module_scope:
5187 env.declare_module(as_name or name, submodule_scope, self.pos)
5189 error(pos, "Name '%s' not declared in module '%s'"
5190 % (name, self.module_name))
5193 local_name = as_name or name
5194 env.add_imported_entry(local_name, entry, pos)
5196 def declaration_matches(self, entry, kind):
5197 if not entry.is_type:
5201 if not type.is_extension_type:
5204 if not type.is_struct_or_union:
5206 if kind != type.kind:
5210 def analyse_expressions(self, env):
5213 def generate_execution_code(self, code):
5217 class FromImportStatNode(StatNode):
5218 # from ... import statement
5221 # items [(string, NameNode)]
5222 # interned_items [(string, NameNode, ExprNode)]
5223 # item PyTempNode used internally
5224 # import_star boolean used internally
5226 child_attrs = ["module"]
5229 def analyse_declarations(self, env):
5230 for name, target in self.items:
5232 if not env.is_module_scope:
5233 error(self.pos, "import * only allowed at module level")
5235 env.has_import_star = 1
5236 self.import_star = 1
5238 target.analyse_target_declaration(env)
5240 def analyse_expressions(self, env):
5242 self.module.analyse_expressions(env)
5243 self.item = ExprNodes.RawCNameExprNode(self.pos, py_object_type)
5244 self.interned_items = []
5245 for name, target in self.items:
5247 for _, entry in env.entries.items():
5248 if not entry.is_type and entry.type.is_extension_type:
5249 env.use_utility_code(ExprNodes.type_test_utility_code)
5252 entry = env.lookup(target.name)
5253 # check whether or not entry is already cimported
5254 if (entry.is_type and entry.type.name == name
5255 and hasattr(entry.type, 'module_name')):
5256 if entry.type.module_name == self.module.module_name.value:
5257 # cimported with absolute name
5260 # cimported with relative name
5261 module = env.find_module(self.module.module_name.value,
5263 if entry.type.module_name == module.qualified_name:
5265 except AttributeError:
5267 target.analyse_target_expression(env, None)
5268 if target.type is py_object_type:
5271 coerced_item = self.item.coerce_to(target.type, env)
5272 self.interned_items.append((name, target, coerced_item))
5274 def generate_execution_code(self, code):
5275 self.module.generate_evaluation_code(code)
5276 if self.import_star:
5278 'if (%s(%s) < 0) %s;' % (
5280 self.module.py_result(),
5281 code.error_goto(self.pos)))
5282 item_temp = code.funcstate.allocate_temp(py_object_type, manage_ref=True)
5283 self.item.set_cname(item_temp)
5284 for name, target, coerced_item in self.interned_items:
5285 cname = code.intern_identifier(name)
5287 '%s = PyObject_GetAttr(%s, %s); %s' % (
5289 self.module.py_result(),
5291 code.error_goto_if_null(item_temp, self.pos)))
5292 code.put_gotref(item_temp)
5293 if coerced_item is None:
5294 target.generate_assignment_code(self.item, code)
5296 coerced_item.allocate_temp_result(code)
5297 coerced_item.generate_result_code(code)
5298 target.generate_assignment_code(coerced_item, code)
5299 code.put_decref_clear(item_temp, py_object_type)
5300 code.funcstate.release_temp(item_temp)
5301 self.module.generate_disposal_code(code)
5302 self.module.free_temps(code)
5306 #------------------------------------------------------------------------------------
5308 # Runtime support code
5310 #------------------------------------------------------------------------------------
5312 utility_function_predeclarations = \
5314 /* inline attribute */
5315 #ifndef CYTHON_INLINE
5316 #if defined(__GNUC__)
5317 #define CYTHON_INLINE __inline__
5318 #elif defined(_MSC_VER)
5319 #define CYTHON_INLINE __inline
5320 #elif defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
5321 #define CYTHON_INLINE inline
5323 #define CYTHON_INLINE
5327 /* unused attribute */
5328 #ifndef CYTHON_UNUSED
5329 # if defined(__GNUC__)
5330 # if !(defined(__cplusplus)) || (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
5331 # define CYTHON_UNUSED __attribute__ ((__unused__))
5333 # define CYTHON_UNUSED
5335 # elif defined(__ICC) || defined(__INTEL_COMPILER)
5336 # define CYTHON_UNUSED __attribute__ ((__unused__))
5338 # define CYTHON_UNUSED
5342 typedef struct {PyObject **p; char *s; const long n; const char* encoding; const char is_unicode; const char is_str; const char intern; } __Pyx_StringTabEntry; /*proto*/
5346 if Options.gcc_branch_hints:
5347 branch_prediction_macros = \
5350 /* Test for GCC > 2.95 */
5351 #if __GNUC__ > 2 || (__GNUC__ == 2 && (__GNUC_MINOR__ > 95))
5352 #define likely(x) __builtin_expect(!!(x), 1)
5353 #define unlikely(x) __builtin_expect(!!(x), 0)
5354 #else /* __GNUC__ > 2 ... */
5355 #define likely(x) (x)
5356 #define unlikely(x) (x)
5357 #endif /* __GNUC__ > 2 ... */
5358 #else /* __GNUC__ */
5359 #define likely(x) (x)
5360 #define unlikely(x) (x)
5361 #endif /* __GNUC__ */
5364 branch_prediction_macros = \
5366 #define likely(x) (x)
5367 #define unlikely(x) (x)
5370 #get_name_predeclaration = \
5371 #"static PyObject *__Pyx_GetName(PyObject *dict, char *name); /*proto*/"
5373 #get_name_interned_predeclaration = \
5374 #"static PyObject *__Pyx_GetName(PyObject *dict, PyObject *name); /*proto*/"
5376 #------------------------------------------------------------------------------------
5378 printing_utility_code = UtilityCode(
5380 static int __Pyx_Print(PyObject*, PyObject *, int); /*proto*/
5381 #if PY_MAJOR_VERSION >= 3
5382 static PyObject* %s = 0;
5383 static PyObject* %s = 0;
5385 """ % (Naming.print_function, Naming.print_function_kwargs),
5387 #if PY_MAJOR_VERSION >= 3
5391 """ % (Naming.print_function, Naming.print_function_kwargs),
5393 #if PY_MAJOR_VERSION < 3
5394 static PyObject *__Pyx_GetStdout(void) {
5395 PyObject *f = PySys_GetObject((char *)"stdout");
5397 PyErr_SetString(PyExc_RuntimeError, "lost sys.stdout");
5402 static int __Pyx_Print(PyObject* f, PyObject *arg_tuple, int newline) {
5407 if (!(f = __Pyx_GetStdout()))
5410 for (i=0; i < PyTuple_GET_SIZE(arg_tuple); i++) {
5411 if (PyFile_SoftSpace(f, 1)) {
5412 if (PyFile_WriteString(" ", f) < 0)
5415 v = PyTuple_GET_ITEM(arg_tuple, i);
5416 if (PyFile_WriteObject(v, f, Py_PRINT_RAW) < 0)
5418 if (PyString_Check(v)) {
5419 char *s = PyString_AsString(v);
5420 Py_ssize_t len = PyString_Size(v);
5422 isspace(Py_CHARMASK(s[len-1])) &&
5424 PyFile_SoftSpace(f, 0);
5428 if (PyFile_WriteString("\n", f) < 0)
5430 PyFile_SoftSpace(f, 0);
5435 #else /* Python 3 has a print function */
5437 static int __Pyx_Print(PyObject* stream, PyObject *arg_tuple, int newline) {
5438 PyObject* kwargs = 0;
5439 PyObject* result = 0;
5440 PyObject* end_string;
5441 if (unlikely(!%(PRINT_FUNCTION)s)) {
5442 %(PRINT_FUNCTION)s = __Pyx_GetAttrString(%(BUILTINS)s, "print");
5443 if (!%(PRINT_FUNCTION)s)
5447 kwargs = PyDict_New();
5448 if (unlikely(!kwargs))
5450 if (unlikely(PyDict_SetItemString(kwargs, "file", stream) < 0))
5453 end_string = PyUnicode_FromStringAndSize(" ", 1);
5454 if (unlikely(!end_string))
5456 if (PyDict_SetItemString(kwargs, "end", end_string) < 0) {
5457 Py_DECREF(end_string);
5460 Py_DECREF(end_string);
5462 } else if (!newline) {
5463 if (unlikely(!%(PRINT_KWARGS)s)) {
5464 %(PRINT_KWARGS)s = PyDict_New();
5465 if (unlikely(!%(PRINT_KWARGS)s))
5467 end_string = PyUnicode_FromStringAndSize(" ", 1);
5468 if (unlikely(!end_string))
5470 if (PyDict_SetItemString(%(PRINT_KWARGS)s, "end", end_string) < 0) {
5471 Py_DECREF(end_string);
5474 Py_DECREF(end_string);
5476 kwargs = %(PRINT_KWARGS)s;
5478 result = PyObject_Call(%(PRINT_FUNCTION)s, arg_tuple, kwargs);
5479 if (unlikely(kwargs) && (kwargs != %(PRINT_KWARGS)s))
5486 if (kwargs != %(PRINT_KWARGS)s)
5492 """ % {'BUILTINS' : Naming.builtins_cname,
5493 'PRINT_FUNCTION' : Naming.print_function,
5494 'PRINT_KWARGS' : Naming.print_function_kwargs}
5498 printing_one_utility_code = UtilityCode(
5500 static int __Pyx_PrintOne(PyObject* stream, PyObject *o); /*proto*/
5503 #if PY_MAJOR_VERSION < 3
5505 static int __Pyx_PrintOne(PyObject* f, PyObject *o) {
5507 if (!(f = __Pyx_GetStdout()))
5510 if (PyFile_SoftSpace(f, 0)) {
5511 if (PyFile_WriteString(" ", f) < 0)
5514 if (PyFile_WriteObject(o, f, Py_PRINT_RAW) < 0)
5516 if (PyFile_WriteString("\n", f) < 0)
5519 /* the line below is just to avoid compiler
5520 * compiler warnings about unused functions */
5521 return __Pyx_Print(f, NULL, 0);
5524 #else /* Python 3 has a print function */
5526 static int __Pyx_PrintOne(PyObject* stream, PyObject *o) {
5528 PyObject* arg_tuple = PyTuple_New(1);
5529 if (unlikely(!arg_tuple))
5532 PyTuple_SET_ITEM(arg_tuple, 0, o);
5533 res = __Pyx_Print(stream, arg_tuple, 1);
5534 Py_DECREF(arg_tuple);
5540 requires=[printing_utility_code])
5544 #------------------------------------------------------------------------------------
5546 # Exception raising code
5548 # Exceptions are raised by __Pyx_Raise() and stored as plain
5549 # type/value/tb in PyThreadState->curexc_*. When being caught by an
5550 # 'except' statement, curexc_* is moved over to exc_* by
5551 # __Pyx_GetException()
5553 restore_exception_utility_code = UtilityCode(
5555 static CYTHON_INLINE void __Pyx_ErrRestore(PyObject *type, PyObject *value, PyObject *tb); /*proto*/
5556 static CYTHON_INLINE void __Pyx_ErrFetch(PyObject **type, PyObject **value, PyObject **tb); /*proto*/
5559 static CYTHON_INLINE void __Pyx_ErrRestore(PyObject *type, PyObject *value, PyObject *tb) {
5560 PyObject *tmp_type, *tmp_value, *tmp_tb;
5561 PyThreadState *tstate = PyThreadState_GET();
5563 tmp_type = tstate->curexc_type;
5564 tmp_value = tstate->curexc_value;
5565 tmp_tb = tstate->curexc_traceback;
5566 tstate->curexc_type = type;
5567 tstate->curexc_value = value;
5568 tstate->curexc_traceback = tb;
5569 Py_XDECREF(tmp_type);
5570 Py_XDECREF(tmp_value);
5574 static CYTHON_INLINE void __Pyx_ErrFetch(PyObject **type, PyObject **value, PyObject **tb) {
5575 PyThreadState *tstate = PyThreadState_GET();
5576 *type = tstate->curexc_type;
5577 *value = tstate->curexc_value;
5578 *tb = tstate->curexc_traceback;
5580 tstate->curexc_type = 0;
5581 tstate->curexc_value = 0;
5582 tstate->curexc_traceback = 0;
5587 # The following function is based on do_raise() from ceval.c. There
5588 # are separate versions for Python2 and Python3 as exception handling
5589 # has changed quite a lot between the two versions.
5591 raise_utility_code = UtilityCode(
5593 static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb); /*proto*/
5596 #if PY_MAJOR_VERSION < 3
5597 static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb) {
5601 /* First, check the traceback argument, replacing None with NULL. */
5602 if (tb == Py_None) {
5606 else if (tb != NULL && !PyTraceBack_Check(tb)) {
5607 PyErr_SetString(PyExc_TypeError,
5608 "raise: arg 3 must be a traceback or None");
5611 /* Next, replace a missing value with None */
5612 if (value == NULL) {
5616 #if PY_VERSION_HEX < 0x02050000
5617 if (!PyClass_Check(type))
5619 if (!PyType_Check(type))
5622 /* Raising an instance. The value should be a dummy. */
5623 if (value != Py_None) {
5624 PyErr_SetString(PyExc_TypeError,
5625 "instance exception may not have a separate value");
5628 /* Normalize to raise <class>, <instance> */
5631 #if PY_VERSION_HEX < 0x02050000
5632 if (PyInstance_Check(type)) {
5633 type = (PyObject*) ((PyInstanceObject*)type)->in_class;
5638 PyErr_SetString(PyExc_TypeError,
5639 "raise: exception must be an old-style class or instance");
5643 type = (PyObject*) Py_TYPE(type);
5645 if (!PyType_IsSubtype((PyTypeObject *)type, (PyTypeObject *)PyExc_BaseException)) {
5646 PyErr_SetString(PyExc_TypeError,
5647 "raise: exception class must be a subclass of BaseException");
5653 __Pyx_ErrRestore(type, value, tb);
5662 #else /* Python 3+ */
5664 static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb) {
5665 if (tb == Py_None) {
5667 } else if (tb && !PyTraceBack_Check(tb)) {
5668 PyErr_SetString(PyExc_TypeError,
5669 "raise: arg 3 must be a traceback or None");
5672 if (value == Py_None)
5675 if (PyExceptionInstance_Check(type)) {
5677 PyErr_SetString(PyExc_TypeError,
5678 "instance exception may not have a separate value");
5682 type = (PyObject*) Py_TYPE(value);
5683 } else if (!PyExceptionClass_Check(type)) {
5684 PyErr_SetString(PyExc_TypeError,
5685 "raise: exception class must be a subclass of BaseException");
5689 PyErr_SetObject(type, value);
5692 PyThreadState *tstate = PyThreadState_GET();
5693 PyObject* tmp_tb = tstate->curexc_traceback;
5696 tstate->curexc_traceback = tb;
5706 requires=[restore_exception_utility_code])
5708 #------------------------------------------------------------------------------------
5710 get_exception_utility_code = UtilityCode(
5712 static int __Pyx_GetException(PyObject **type, PyObject **value, PyObject **tb); /*proto*/
5715 static int __Pyx_GetException(PyObject **type, PyObject **value, PyObject **tb) {
5716 PyObject *local_type, *local_value, *local_tb;
5717 PyObject *tmp_type, *tmp_value, *tmp_tb;
5718 PyThreadState *tstate = PyThreadState_GET();
5719 local_type = tstate->curexc_type;
5720 local_value = tstate->curexc_value;
5721 local_tb = tstate->curexc_traceback;
5722 tstate->curexc_type = 0;
5723 tstate->curexc_value = 0;
5724 tstate->curexc_traceback = 0;
5725 PyErr_NormalizeException(&local_type, &local_value, &local_tb);
5726 if (unlikely(tstate->curexc_type))
5728 #if PY_MAJOR_VERSION >= 3
5729 if (unlikely(PyException_SetTraceback(local_value, local_tb) < 0))
5733 *value = local_value;
5735 Py_INCREF(local_type);
5736 Py_INCREF(local_value);
5737 Py_INCREF(local_tb);
5738 tmp_type = tstate->exc_type;
5739 tmp_value = tstate->exc_value;
5740 tmp_tb = tstate->exc_traceback;
5741 tstate->exc_type = local_type;
5742 tstate->exc_value = local_value;
5743 tstate->exc_traceback = local_tb;
5744 /* Make sure tstate is in a consistent state when we XDECREF
5745 these objects (XDECREF may run arbitrary code). */
5746 Py_XDECREF(tmp_type);
5747 Py_XDECREF(tmp_value);
5754 Py_XDECREF(local_type);
5755 Py_XDECREF(local_value);
5756 Py_XDECREF(local_tb);
5762 #------------------------------------------------------------------------------------
5764 get_exception_tuple_utility_code = UtilityCode(proto="""
5765 static PyObject *__Pyx_GetExceptionTuple(void); /*proto*/
5767 # I doubt that calling __Pyx_GetException() here is correct as it moves
5768 # the exception from tstate->curexc_* to tstate->exc_*, which prevents
5769 # exception handlers later on from receiving it.
5771 static PyObject *__Pyx_GetExceptionTuple(void) {
5772 PyObject *type = NULL, *value = NULL, *tb = NULL;
5773 if (__Pyx_GetException(&type, &value, &tb) == 0) {
5774 PyObject* exc_info = PyTuple_New(3);
5779 PyTuple_SET_ITEM(exc_info, 0, type);
5780 PyTuple_SET_ITEM(exc_info, 1, value);
5781 PyTuple_SET_ITEM(exc_info, 2, tb);
5788 requires=[get_exception_utility_code])
5790 #------------------------------------------------------------------------------------
5792 reset_exception_utility_code = UtilityCode(
5794 static CYTHON_INLINE void __Pyx_ExceptionSave(PyObject **type, PyObject **value, PyObject **tb); /*proto*/
5795 static void __Pyx_ExceptionReset(PyObject *type, PyObject *value, PyObject *tb); /*proto*/
5798 static CYTHON_INLINE void __Pyx_ExceptionSave(PyObject **type, PyObject **value, PyObject **tb) {
5799 PyThreadState *tstate = PyThreadState_GET();
5800 *type = tstate->exc_type;
5801 *value = tstate->exc_value;
5802 *tb = tstate->exc_traceback;
5808 static void __Pyx_ExceptionReset(PyObject *type, PyObject *value, PyObject *tb) {
5809 PyObject *tmp_type, *tmp_value, *tmp_tb;
5810 PyThreadState *tstate = PyThreadState_GET();
5811 tmp_type = tstate->exc_type;
5812 tmp_value = tstate->exc_value;
5813 tmp_tb = tstate->exc_traceback;
5814 tstate->exc_type = type;
5815 tstate->exc_value = value;
5816 tstate->exc_traceback = tb;
5817 Py_XDECREF(tmp_type);
5818 Py_XDECREF(tmp_value);
5823 #------------------------------------------------------------------------------------
5825 arg_type_test_utility_code = UtilityCode(
5827 static int __Pyx_ArgTypeTest(PyObject *obj, PyTypeObject *type, int none_allowed,
5828 const char *name, int exact); /*proto*/
5831 static int __Pyx_ArgTypeTest(PyObject *obj, PyTypeObject *type, int none_allowed,
5832 const char *name, int exact)
5835 PyErr_Format(PyExc_SystemError, "Missing type object");
5838 if (none_allowed && obj == Py_None) return 1;
5840 if (Py_TYPE(obj) == type) return 1;
5843 if (PyObject_TypeCheck(obj, type)) return 1;
5845 PyErr_Format(PyExc_TypeError,
5846 "Argument '%s' has incorrect type (expected %s, got %s)",
5847 name, type->tp_name, Py_TYPE(obj)->tp_name);
5852 #------------------------------------------------------------------------------------
5854 # __Pyx_RaiseArgtupleInvalid raises the correct exception when too
5855 # many or too few positional arguments were found. This handles
5856 # Py_ssize_t formatting correctly.
5858 raise_argtuple_invalid_utility_code = UtilityCode(
5860 static void __Pyx_RaiseArgtupleInvalid(const char* func_name, int exact,
5861 Py_ssize_t num_min, Py_ssize_t num_max, Py_ssize_t num_found); /*proto*/
5864 static void __Pyx_RaiseArgtupleInvalid(
5865 const char* func_name,
5869 Py_ssize_t num_found)
5871 Py_ssize_t num_expected;
5872 const char *number, *more_or_less;
5874 if (num_found < num_min) {
5875 num_expected = num_min;
5876 more_or_less = "at least";
5878 num_expected = num_max;
5879 more_or_less = "at most";
5882 more_or_less = "exactly";
5884 number = (num_expected == 1) ? "" : "s";
5885 PyErr_Format(PyExc_TypeError,
5886 #if PY_VERSION_HEX < 0x02050000
5887 "%s() takes %s %d positional argument%s (%d given)",
5889 "%s() takes %s %zd positional argument%s (%zd given)",
5891 func_name, more_or_less, num_expected, number, num_found);
5895 raise_keyword_required_utility_code = UtilityCode(
5897 static CYTHON_INLINE void __Pyx_RaiseKeywordRequired(const char* func_name, PyObject* kw_name); /*proto*/
5900 static CYTHON_INLINE void __Pyx_RaiseKeywordRequired(
5901 const char* func_name,
5904 PyErr_Format(PyExc_TypeError,
5905 #if PY_MAJOR_VERSION >= 3
5906 "%s() needs keyword-only argument %U", func_name, kw_name);
5908 "%s() needs keyword-only argument %s", func_name,
5909 PyString_AS_STRING(kw_name));
5914 raise_double_keywords_utility_code = UtilityCode(
5916 static void __Pyx_RaiseDoubleKeywordsError(
5917 const char* func_name, PyObject* kw_name); /*proto*/
5920 static void __Pyx_RaiseDoubleKeywordsError(
5921 const char* func_name,
5924 PyErr_Format(PyExc_TypeError,
5925 #if PY_MAJOR_VERSION >= 3
5926 "%s() got multiple values for keyword argument '%U'", func_name, kw_name);
5928 "%s() got multiple values for keyword argument '%s'", func_name,
5929 PyString_AS_STRING(kw_name));
5934 #------------------------------------------------------------------------------------
5936 # __Pyx_CheckKeywordStrings raises an error if non-string keywords
5937 # were passed to a function, or if any keywords were passed to a
5938 # function that does not accept them.
5940 keyword_string_check_utility_code = UtilityCode(
5942 static CYTHON_INLINE int __Pyx_CheckKeywordStrings(PyObject *kwdict,
5943 const char* function_name, int kw_allowed); /*proto*/
5946 static CYTHON_INLINE int __Pyx_CheckKeywordStrings(
5948 const char* function_name,
5953 while (PyDict_Next(kwdict, &pos, &key, 0)) {
5954 #if PY_MAJOR_VERSION < 3
5955 if (unlikely(!PyString_CheckExact(key)) && unlikely(!PyString_Check(key)))
5957 if (unlikely(!PyUnicode_CheckExact(key)) && unlikely(!PyUnicode_Check(key)))
5959 goto invalid_keyword_type;
5961 if ((!kw_allowed) && unlikely(key))
5962 goto invalid_keyword;
5964 invalid_keyword_type:
5965 PyErr_Format(PyExc_TypeError,
5966 "%s() keywords must be strings", function_name);
5969 PyErr_Format(PyExc_TypeError,
5970 #if PY_MAJOR_VERSION < 3
5971 "%s() got an unexpected keyword argument '%s'",
5972 function_name, PyString_AsString(key));
5974 "%s() got an unexpected keyword argument '%U'",
5975 function_name, key);
5981 #------------------------------------------------------------------------------------
5983 # __Pyx_ParseOptionalKeywords copies the optional/unknown keyword
5984 # arguments from the kwds dict into kwds2. If kwds2 is NULL, unknown
5985 # keywords will raise an invalid keyword error.
5987 # Three kinds of errors are checked: 1) non-string keywords, 2)
5988 # unexpected keywords and 3) overlap with positional arguments.
5990 # If num_posargs is greater 0, it denotes the number of positional
5991 # arguments that were passed and that must therefore not appear
5992 # amongst the keywords as well.
5994 # This method does not check for required keyword arguments.
5997 parse_keywords_utility_code = UtilityCode(
5999 static int __Pyx_ParseOptionalKeywords(PyObject *kwds, PyObject **argnames[], \
6000 PyObject *kwds2, PyObject *values[], Py_ssize_t num_pos_args, \
6001 const char* function_name); /*proto*/
6004 static int __Pyx_ParseOptionalKeywords(
6006 PyObject **argnames[],
6009 Py_ssize_t num_pos_args,
6010 const char* function_name)
6012 PyObject *key = 0, *value = 0;
6015 PyObject*** first_kw_arg = argnames + num_pos_args;
6017 while (PyDict_Next(kwds, &pos, &key, &value)) {
6018 name = first_kw_arg;
6019 while (*name && (**name != key)) name++;
6021 values[name-argnames] = value;
6023 #if PY_MAJOR_VERSION < 3
6024 if (unlikely(!PyString_CheckExact(key)) && unlikely(!PyString_Check(key))) {
6026 if (unlikely(!PyUnicode_CheckExact(key)) && unlikely(!PyUnicode_Check(key))) {
6028 goto invalid_keyword_type;
6030 for (name = first_kw_arg; *name; name++) {
6031 #if PY_MAJOR_VERSION >= 3
6032 if (PyUnicode_GET_SIZE(**name) == PyUnicode_GET_SIZE(key) &&
6033 PyUnicode_Compare(**name, key) == 0) break;
6035 if (PyString_GET_SIZE(**name) == PyString_GET_SIZE(key) &&
6036 _PyString_Eq(**name, key)) break;
6040 values[name-argnames] = value;
6042 /* unexpected keyword found */
6043 for (name=argnames; name != first_kw_arg; name++) {
6044 if (**name == key) goto arg_passed_twice;
6045 #if PY_MAJOR_VERSION >= 3
6046 if (PyUnicode_GET_SIZE(**name) == PyUnicode_GET_SIZE(key) &&
6047 PyUnicode_Compare(**name, key) == 0) goto arg_passed_twice;
6049 if (PyString_GET_SIZE(**name) == PyString_GET_SIZE(key) &&
6050 _PyString_Eq(**name, key)) goto arg_passed_twice;
6054 if (unlikely(PyDict_SetItem(kwds2, key, value))) goto bad;
6056 goto invalid_keyword;
6064 __Pyx_RaiseDoubleKeywordsError(function_name, **name);
6066 invalid_keyword_type:
6067 PyErr_Format(PyExc_TypeError,
6068 "%s() keywords must be strings", function_name);
6071 PyErr_Format(PyExc_TypeError,
6072 #if PY_MAJOR_VERSION < 3
6073 "%s() got an unexpected keyword argument '%s'",
6074 function_name, PyString_AsString(key));
6076 "%s() got an unexpected keyword argument '%U'",
6077 function_name, key);
6084 #------------------------------------------------------------------------------------
6086 traceback_utility_code = UtilityCode(
6088 static void __Pyx_AddTraceback(const char *funcname); /*proto*/
6091 #include "compile.h"
6092 #include "frameobject.h"
6093 #include "traceback.h"
6095 static void __Pyx_AddTraceback(const char *funcname) {
6096 PyObject *py_srcfile = 0;
6097 PyObject *py_funcname = 0;
6098 PyObject *py_globals = 0;
6099 PyCodeObject *py_code = 0;
6100 PyFrameObject *py_frame = 0;
6102 #if PY_MAJOR_VERSION < 3
6103 py_srcfile = PyString_FromString(%(FILENAME)s);
6105 py_srcfile = PyUnicode_FromString(%(FILENAME)s);
6107 if (!py_srcfile) goto bad;
6109 #if PY_MAJOR_VERSION < 3
6110 py_funcname = PyString_FromFormat( "%%s (%%s:%%d)", funcname, %(CFILENAME)s, %(CLINENO)s);
6112 py_funcname = PyUnicode_FromFormat( "%%s (%%s:%%d)", funcname, %(CFILENAME)s, %(CLINENO)s);
6116 #if PY_MAJOR_VERSION < 3
6117 py_funcname = PyString_FromString(funcname);
6119 py_funcname = PyUnicode_FromString(funcname);
6122 if (!py_funcname) goto bad;
6123 py_globals = PyModule_GetDict(%(GLOBALS)s);
6124 if (!py_globals) goto bad;
6125 py_code = PyCode_New(
6126 0, /*int argcount,*/
6127 #if PY_MAJOR_VERSION >= 3
6128 0, /*int kwonlyargcount,*/
6131 0, /*int stacksize,*/
6133 %(EMPTY_BYTES)s, /*PyObject *code,*/
6134 %(EMPTY_TUPLE)s, /*PyObject *consts,*/
6135 %(EMPTY_TUPLE)s, /*PyObject *names,*/
6136 %(EMPTY_TUPLE)s, /*PyObject *varnames,*/
6137 %(EMPTY_TUPLE)s, /*PyObject *freevars,*/
6138 %(EMPTY_TUPLE)s, /*PyObject *cellvars,*/
6139 py_srcfile, /*PyObject *filename,*/
6140 py_funcname, /*PyObject *name,*/
6141 %(LINENO)s, /*int firstlineno,*/
6142 %(EMPTY_BYTES)s /*PyObject *lnotab*/
6144 if (!py_code) goto bad;
6145 py_frame = PyFrame_New(
6146 PyThreadState_GET(), /*PyThreadState *tstate,*/
6147 py_code, /*PyCodeObject *code,*/
6148 py_globals, /*PyObject *globals,*/
6149 0 /*PyObject *locals*/
6151 if (!py_frame) goto bad;
6152 py_frame->f_lineno = %(LINENO)s;
6153 PyTraceBack_Here(py_frame);
6155 Py_XDECREF(py_srcfile);
6156 Py_XDECREF(py_funcname);
6157 Py_XDECREF(py_code);
6158 Py_XDECREF(py_frame);
6161 'FILENAME': Naming.filename_cname,
6162 'LINENO': Naming.lineno_cname,
6163 'CFILENAME': Naming.cfilenm_cname,
6164 'CLINENO': Naming.clineno_cname,
6165 'GLOBALS': Naming.module_cname,
6166 'EMPTY_TUPLE' : Naming.empty_tuple,
6167 'EMPTY_BYTES' : Naming.empty_bytes,
6170 #------------------------------------------------------------------------------------
6172 unraisable_exception_utility_code = UtilityCode(
6174 static void __Pyx_WriteUnraisable(const char *name); /*proto*/
6177 static void __Pyx_WriteUnraisable(const char *name) {
6178 PyObject *old_exc, *old_val, *old_tb;
6180 __Pyx_ErrFetch(&old_exc, &old_val, &old_tb);
6181 #if PY_MAJOR_VERSION < 3
6182 ctx = PyString_FromString(name);
6184 ctx = PyUnicode_FromString(name);
6186 __Pyx_ErrRestore(old_exc, old_val, old_tb);
6188 PyErr_WriteUnraisable(Py_None);
6190 PyErr_WriteUnraisable(ctx);
6195 requires=[restore_exception_utility_code])
6197 #------------------------------------------------------------------------------------
6199 set_vtable_utility_code = UtilityCode(
6201 static int __Pyx_SetVtable(PyObject *dict, void *vtable); /*proto*/
6204 static int __Pyx_SetVtable(PyObject *dict, void *vtable) {
6205 #if PY_VERSION_HEX >= 0x02070000 && !(PY_MAJOR_VERSION==3&&PY_MINOR_VERSION==0)
6206 PyObject *ob = PyCapsule_New(vtable, 0, 0);
6208 PyObject *ob = PyCObject_FromVoidPtr(vtable, 0);
6212 if (PyDict_SetItemString(dict, "__pyx_vtable__", ob) < 0)
6222 #------------------------------------------------------------------------------------
6224 get_vtable_utility_code = UtilityCode(
6226 static int __Pyx_GetVtable(PyObject *dict, void *vtabptr); /*proto*/
6229 static int __Pyx_GetVtable(PyObject *dict, void *vtabptr) {
6230 PyObject *ob = PyMapping_GetItemString(dict, (char *)"__pyx_vtable__");
6233 #if PY_VERSION_HEX >= 0x02070000 && !(PY_MAJOR_VERSION==3&&PY_MINOR_VERSION==0)
6234 *(void **)vtabptr = PyCapsule_GetPointer(ob, 0);
6236 *(void **)vtabptr = PyCObject_AsVoidPtr(ob);
6238 if (!*(void **)vtabptr)
6248 #------------------------------------------------------------------------------------
6250 init_string_tab_utility_code = UtilityCode(
6252 static int __Pyx_InitStrings(__Pyx_StringTabEntry *t); /*proto*/
6255 static int __Pyx_InitStrings(__Pyx_StringTabEntry *t) {
6257 #if PY_MAJOR_VERSION < 3
6258 if (t->is_unicode) {
6259 *t->p = PyUnicode_DecodeUTF8(t->s, t->n - 1, NULL);
6260 } else if (t->intern) {
6261 *t->p = PyString_InternFromString(t->s);
6263 *t->p = PyString_FromStringAndSize(t->s, t->n - 1);
6265 #else /* Python 3+ has unicode identifiers */
6266 if (t->is_unicode | t->is_str) {
6268 *t->p = PyUnicode_InternFromString(t->s);
6269 } else if (t->encoding) {
6270 *t->p = PyUnicode_Decode(t->s, t->n - 1, t->encoding, NULL);
6272 *t->p = PyUnicode_FromStringAndSize(t->s, t->n - 1);
6275 *t->p = PyBytes_FromStringAndSize(t->s, t->n - 1);
6286 #------------------------------------------------------------------------------------
6288 force_init_threads_utility_code = UtilityCode(
6290 #ifndef __PYX_FORCE_INIT_THREADS
6291 #if PY_VERSION_HEX < 0x02040200
6292 #define __PYX_FORCE_INIT_THREADS 1
6294 #define __PYX_FORCE_INIT_THREADS 0
6299 #------------------------------------------------------------------------------------
6301 # Note that cPython ignores PyTrace_EXCEPTION,
6302 # but maybe some other profilers don't.
6304 profile_utility_code = UtilityCode(proto="""
6305 #ifndef CYTHON_PROFILE
6306 #define CYTHON_PROFILE 1
6309 #ifndef CYTHON_PROFILE_REUSE_FRAME
6310 #define CYTHON_PROFILE_REUSE_FRAME 0
6315 #include "compile.h"
6316 #include "frameobject.h"
6317 #include "traceback.h"
6319 #if CYTHON_PROFILE_REUSE_FRAME
6320 #define CYTHON_FRAME_MODIFIER static
6321 #define CYTHON_FRAME_DEL
6323 #define CYTHON_FRAME_MODIFIER
6324 #define CYTHON_FRAME_DEL Py_DECREF(%(FRAME)s)
6327 #define __Pyx_TraceDeclarations \\
6328 static PyCodeObject *%(FRAME_CODE)s = NULL; \\
6329 CYTHON_FRAME_MODIFIER PyFrameObject *%(FRAME)s = NULL; \\
6330 int __Pyx_use_tracing = 0;
6332 #define __Pyx_TraceCall(funcname, srcfile, firstlineno) \\
6333 if (unlikely(PyThreadState_GET()->use_tracing && PyThreadState_GET()->c_profilefunc)) { \\
6334 __Pyx_use_tracing = __Pyx_TraceSetupAndCall(&%(FRAME_CODE)s, &%(FRAME)s, funcname, srcfile, firstlineno); \\
6337 #define __Pyx_TraceException() \\
6338 if (unlikely(__Pyx_use_tracing( && PyThreadState_GET()->use_tracing && PyThreadState_GET()->c_profilefunc) { \\
6339 PyObject *exc_info = __Pyx_GetExceptionTuple(); \\
6341 PyThreadState_GET()->c_profilefunc( \\
6342 PyThreadState_GET()->c_profileobj, %(FRAME)s, PyTrace_EXCEPTION, exc_info); \\
6343 Py_DECREF(exc_info); \\
6347 #define __Pyx_TraceReturn(result) \\
6348 if (unlikely(__Pyx_use_tracing) && PyThreadState_GET()->use_tracing && PyThreadState_GET()->c_profilefunc) { \\
6349 PyThreadState_GET()->c_profilefunc( \\
6350 PyThreadState_GET()->c_profileobj, %(FRAME)s, PyTrace_RETURN, (PyObject*)result); \\
6351 CYTHON_FRAME_DEL; \\
6354 static PyCodeObject *__Pyx_createFrameCodeObject(const char *funcname, const char *srcfile, int firstlineno); /*proto*/
6355 static int __Pyx_TraceSetupAndCall(PyCodeObject** code, PyFrameObject** frame, const char *funcname, const char *srcfile, int firstlineno); /*proto*/
6359 #define __Pyx_TraceDeclarations
6360 #define __Pyx_TraceCall(funcname, srcfile, firstlineno)
6361 #define __Pyx_TraceException()
6362 #define __Pyx_TraceReturn(result)
6364 #endif /* CYTHON_PROFILE */
6367 "FRAME": Naming.frame_cname,
6368 "FRAME_CODE": Naming.frame_code_cname,
6374 static int __Pyx_TraceSetupAndCall(PyCodeObject** code,
6375 PyFrameObject** frame,
6376 const char *funcname,
6377 const char *srcfile,
6379 if (*frame == NULL || !CYTHON_PROFILE_REUSE_FRAME) {
6380 if (*code == NULL) {
6381 *code = __Pyx_createFrameCodeObject(funcname, srcfile, firstlineno);
6382 if (*code == NULL) return 0;
6384 *frame = PyFrame_New(
6385 PyThreadState_GET(), /*PyThreadState *tstate*/
6386 *code, /*PyCodeObject *code*/
6387 PyModule_GetDict(%(MODULE)s), /*PyObject *globals*/
6388 0 /*PyObject *locals*/
6390 if (*frame == NULL) return 0;
6393 (*frame)->f_tstate = PyThreadState_GET();
6395 return PyThreadState_GET()->c_profilefunc(PyThreadState_GET()->c_profileobj, *frame, PyTrace_CALL, NULL) == 0;
6398 static PyCodeObject *__Pyx_createFrameCodeObject(const char *funcname, const char *srcfile, int firstlineno) {
6399 PyObject *py_srcfile = 0;
6400 PyObject *py_funcname = 0;
6401 PyCodeObject *py_code = 0;
6403 #if PY_MAJOR_VERSION < 3
6404 py_funcname = PyString_FromString(funcname);
6405 py_srcfile = PyString_FromString(srcfile);
6407 py_funcname = PyUnicode_FromString(funcname);
6408 py_srcfile = PyUnicode_FromString(srcfile);
6410 if (!py_funcname | !py_srcfile) goto bad;
6412 py_code = PyCode_New(
6413 0, /*int argcount,*/
6414 #if PY_MAJOR_VERSION >= 3
6415 0, /*int kwonlyargcount,*/
6418 0, /*int stacksize,*/
6420 %(EMPTY_BYTES)s, /*PyObject *code,*/
6421 %(EMPTY_TUPLE)s, /*PyObject *consts,*/
6422 %(EMPTY_TUPLE)s, /*PyObject *names,*/
6423 %(EMPTY_TUPLE)s, /*PyObject *varnames,*/
6424 %(EMPTY_TUPLE)s, /*PyObject *freevars,*/
6425 %(EMPTY_TUPLE)s, /*PyObject *cellvars,*/
6426 py_srcfile, /*PyObject *filename,*/
6427 py_funcname, /*PyObject *name,*/
6428 firstlineno, /*int firstlineno,*/
6429 %(EMPTY_BYTES)s /*PyObject *lnotab*/
6433 Py_XDECREF(py_srcfile);
6434 Py_XDECREF(py_funcname);
6439 #endif /* CYTHON_PROFILE */
6441 'EMPTY_TUPLE' : Naming.empty_tuple,
6442 'EMPTY_BYTES' : Naming.empty_bytes,
6443 "MODULE": Naming.module_cname,