3 # Pyrex - Parse tree nodes
6 import sys, os, time, copy
12 from sets import Set as set
16 from Errors import error, warning, InternalError
20 from PyrexTypes import py_object_type, error_type, CFuncType
21 from Symtab import ModuleScope, LocalScope, ClosureScope, \
22 StructOrUnionScope, PyClassScope, CClassScope, CppClassScope
23 from Cython.Utils import open_new_file, replace_suffix
24 from Code import UtilityCode
25 from StringEncoding import EncodedString, escape_byte_string, split_string_literal
30 absolute_path_length = 0
32 def relative_position(pos):
34 We embed the relative filename in the generated C file, since we
35 don't want to have to regnerate and compile all the source code
36 whenever the Python install directory moves (which could happen,
37 e.g,. when distributing binaries.)
40 a position tuple -- (absolute filename, line number column position)
48 global absolute_path_length
49 if absolute_path_length==0:
50 absolute_path_length = len(os.path.abspath(os.getcwd()))
51 return (pos[0].get_filenametable_entry()[absolute_path_length+1:], pos[1])
53 def embed_position(pos, docstring):
54 if not Options.embed_pos_in_docstring:
56 pos_line = u'File: %s (starting at line %s)' % relative_position(pos)
59 return EncodedString(pos_line)
61 # make sure we can encode the filename in the docstring encoding
62 # otherwise make the docstring a unicode string
63 encoding = docstring.encoding
64 if encoding is not None:
66 encoded_bytes = pos_line.encode(encoding)
67 except UnicodeEncodeError:
71 # reuse the string encoding of the original docstring
72 doc = EncodedString(pos_line)
74 doc = EncodedString(pos_line + u'\n' + docstring)
75 doc.encoding = encoding
79 from Code import CCodeWriter
80 from types import FunctionType
82 def write_func_call(func):
84 if len(args) > 1 and isinstance(args[1], CCodeWriter):
85 # here we annotate the code with this function call
86 # but only if new code is generated
88 marker = ' /* %s -> %s.%s %s */' % (
89 ' ' * code.call_level,
90 node.__class__.__name__,
93 pristine = code.buffer.stream.tell()
95 start = code.buffer.stream.tell()
97 res = func(*args, **kwds)
99 if start == code.buffer.stream.tell():
100 code.buffer.stream.seek(pristine)
102 marker = marker.replace('->', '<-')
106 return func(*args, **kwds)
109 class VerboseCodeWriter(type):
110 # Set this as a metaclass to trace function calls in code.
111 # This slows down code generation and makes much larger files.
112 def __new__(cls, name, bases, attrs):
114 for mname, m in attrs.items():
115 if isinstance(m, FunctionType):
116 attrs[mname] = write_func_call(m)
117 return super(VerboseCodeWriter, cls).__new__(cls, name, bases, attrs)
121 # pos (string, int, int) Source file position
122 # is_name boolean Is a NameNode
123 # is_literal boolean Is a ConstNode
125 if DebugFlags.debug_trace_code_generation:
126 __metaclass__ = VerboseCodeWriter
132 # All descandants should set child_attrs to a list of the attributes
133 # containing nodes considered "children" in the tree. Each such attribute
134 # can either contain a single node or a list of nodes. See Visitor.py.
137 def __init__(self, pos, **kw):
139 self.__dict__.update(kw)
141 gil_message = "Operation"
145 def gil_error(self, env=None):
146 error(self.pos, "%s not allowed without gil" % self.gil_message)
148 cpp_message = "Operation"
150 def cpp_check(self, env):
155 error(self.pos, "%s only allowed in c++" % self.cpp_message)
157 def clone_node(self):
158 """Clone the node. This is defined as a shallow copy, except for member lists
159 amongst the child attributes (from get_child_accessors) which are also
160 copied. Lists containing child nodes are thus seen as a way for the node
161 to hold multiple children directly; the list is not treated as a seperate
162 level in the tree."""
163 result = copy.copy(self)
164 for attrname in result.child_attrs:
165 value = getattr(result, attrname)
166 if isinstance(value, list):
167 setattr(result, attrname, [x for x in value])
172 # There are 4 phases of parse tree processing, applied in order to
173 # all the statements in a given scope-block:
175 # (0) analyse_control_flow
176 # Create the control flow tree into which state can be asserted and
179 # (1) analyse_declarations
180 # Make symbol table entries for all declarations at the current
181 # level, both explicit (def, cdef, etc.) and implicit (assignment
182 # to an otherwise undeclared name).
184 # (2) analyse_expressions
185 # Determine the result types of expressions and fill in the
186 # 'type' attribute of each ExprNode. Insert coercion nodes into the
187 # tree where needed to convert to and from Python objects.
188 # Allocate temporary locals for intermediate results. Fill
189 # in the 'result_code' attribute of each ExprNode with a C code
193 # Emit C code for all declarations, statements and expressions.
194 # Recursively applies the 3 processing phases to the bodies of
198 def analyse_control_flow(self, env):
201 def analyse_declarations(self, env):
204 def analyse_expressions(self, env):
205 raise InternalError("analyse_expressions not implemented for %s" % \
206 self.__class__.__name__)
208 def generate_code(self, code):
209 raise InternalError("generate_code not implemented for %s" % \
210 self.__class__.__name__)
212 def annotate(self, code):
213 # mro does the wrong thing
214 if isinstance(self, BlockNode):
215 self.body.annotate(code)
220 except AttributeError:
222 if not self.child_attrs:
225 for attr in self.child_attrs:
226 child = getattr(self, attr)
227 # Sometimes lists, sometimes nodes
230 elif isinstance(child, list):
232 pos = max(pos, c.end_pos())
234 pos = max(pos, child.end_pos())
238 def dump(self, level=0, filter_out=("pos",), cutoff=100, encountered=None):
240 return "<...nesting level cutoff...>"
241 if encountered is None:
243 if id(self) in encountered:
244 return "<%s (%d) -- already output>" % (self.__class__.__name__, id(self))
245 encountered.add(id(self))
247 def dump_child(x, level):
248 if isinstance(x, Node):
249 return x.dump(level, filter_out, cutoff-1, encountered)
250 elif isinstance(x, list):
251 return "[%s]" % ", ".join([dump_child(item, level) for item in x])
256 attrs = [(key, value) for key, value in self.__dict__.iteritems() if key not in filter_out]
258 return "<%s (%d)>" % (self.__class__.__name__, id(self))
261 res = "<%s (%d)\n" % (self.__class__.__name__, id(self))
262 for key, value in attrs:
263 res += "%s %s: %s\n" % (indent, key, dump_child(value, level + 1))
264 res += "%s>" % indent
267 class CompilerDirectivesNode(Node):
269 Sets compiler directives for the children nodes
271 # directives {string:value} A dictionary holding the right value for
272 # *all* possible directives.
274 child_attrs = ["body"]
276 def analyse_control_flow(self, env):
278 env.directives = self.directives
279 self.body.analyse_control_flow(env)
282 def analyse_declarations(self, env):
284 env.directives = self.directives
285 self.body.analyse_declarations(env)
288 def analyse_expressions(self, env):
290 env.directives = self.directives
291 self.body.analyse_expressions(env)
294 def generate_function_definitions(self, env, code):
295 env_old = env.directives
296 code_old = code.globalstate.directives
297 code.globalstate.directives = self.directives
298 self.body.generate_function_definitions(env, code)
299 env.directives = env_old
300 code.globalstate.directives = code_old
302 def generate_execution_code(self, code):
303 old = code.globalstate.directives
304 code.globalstate.directives = self.directives
305 self.body.generate_execution_code(code)
306 code.globalstate.directives = old
308 def annotate(self, code):
309 old = code.globalstate.directives
310 code.globalstate.directives = self.directives
311 self.body.annotate(code)
312 code.globalstate.directives = old
314 class BlockNode(object):
315 # Mixin class for nodes representing a declaration block.
317 def generate_cached_builtins_decls(self, env, code):
318 entries = env.global_scope().undeclared_cached_builtins
319 for entry in entries:
320 code.globalstate.add_cached_builtin_decl(entry)
324 class StatListNode(Node):
325 # stats a list of StatNode
327 child_attrs = ["stats"]
329 def create_analysed(pos, env, *args, **kw):
330 node = StatListNode(pos, *args, **kw)
331 return node # No node-specific analysis necesarry
332 create_analysed = staticmethod(create_analysed)
334 def analyse_control_flow(self, env):
335 for stat in self.stats:
336 stat.analyse_control_flow(env)
338 def analyse_declarations(self, env):
339 #print "StatListNode.analyse_declarations" ###
340 for stat in self.stats:
341 stat.analyse_declarations(env)
343 def analyse_expressions(self, env):
344 #print "StatListNode.analyse_expressions" ###
345 for stat in self.stats:
346 stat.analyse_expressions(env)
348 def generate_function_definitions(self, env, code):
349 #print "StatListNode.generate_function_definitions" ###
350 for stat in self.stats:
351 stat.generate_function_definitions(env, code)
353 def generate_execution_code(self, code):
354 #print "StatListNode.generate_execution_code" ###
355 for stat in self.stats:
356 code.mark_pos(stat.pos)
357 stat.generate_execution_code(code)
359 def annotate(self, code):
360 for stat in self.stats:
364 class StatNode(Node):
366 # Code generation for statements is split into the following subphases:
368 # (1) generate_function_definitions
369 # Emit C code for the definitions of any structs,
370 # unions, enums and functions defined in the current
373 # (2) generate_execution_code
374 # Emit C code for executable statements.
377 def generate_function_definitions(self, env, code):
380 def generate_execution_code(self, code):
381 raise InternalError("generate_execution_code not implemented for %s" % \
382 self.__class__.__name__)
385 class CDefExternNode(StatNode):
386 # include_file string or None
389 child_attrs = ["body"]
391 def analyse_declarations(self, env):
392 if self.include_file:
393 env.add_include_file(self.include_file)
394 old_cinclude_flag = env.in_cinclude
396 self.body.analyse_declarations(env)
397 env.in_cinclude = old_cinclude_flag
399 def analyse_expressions(self, env):
402 def generate_execution_code(self, code):
405 def annotate(self, code):
406 self.body.annotate(code)
409 class CDeclaratorNode(Node):
410 # Part of a C declaration.
412 # Processing during analyse_declarations phase:
415 # Returns (name, type) pair where name is the
416 # CNameDeclaratorNode of the name being declared
417 # and type is the type it is being declared as.
419 # calling_convention string Calling convention of CFuncDeclaratorNode
420 # for which this is a base
424 calling_convention = ""
427 class CNameDeclaratorNode(CDeclaratorNode):
428 # name string The Pyrex name being declared
429 # cname string or None C name, if specified
430 # default ExprNode or None the value assigned on declaration
432 child_attrs = ['default']
436 def analyse(self, base_type, env, nonempty = 0):
437 if nonempty and self.name == '':
438 # May have mistaken the name for the type.
439 if base_type.is_ptr or base_type.is_array or base_type.is_buffer:
440 error(self.pos, "Missing argument name")
441 elif base_type.is_void:
442 error(self.pos, "Use spam() rather than spam(void) to declare a function with no arguments.")
444 self.name = base_type.declaration_code("", for_display=1, pyrex=1)
445 base_type = py_object_type
446 self.type = base_type
447 return self, base_type
449 class CPtrDeclaratorNode(CDeclaratorNode):
450 # base CDeclaratorNode
452 child_attrs = ["base"]
454 def analyse(self, base_type, env, nonempty = 0):
455 if base_type.is_pyobject:
457 "Pointer base type cannot be a Python object")
458 ptr_type = PyrexTypes.c_ptr_type(base_type)
459 return self.base.analyse(ptr_type, env, nonempty = nonempty)
461 class CReferenceDeclaratorNode(CDeclaratorNode):
462 # base CDeclaratorNode
464 child_attrs = ["base"]
466 def analyse(self, base_type, env, nonempty = 0):
467 if base_type.is_pyobject:
469 "Reference base type cannot be a Python object")
470 ref_type = PyrexTypes.c_ref_type(base_type)
471 return self.base.analyse(ref_type, env, nonempty = nonempty)
473 class CArrayDeclaratorNode(CDeclaratorNode):
474 # base CDeclaratorNode
477 child_attrs = ["base", "dimension"]
479 def analyse(self, base_type, env, nonempty = 0):
480 if base_type.is_cpp_class:
481 from ExprNodes import TupleNode
482 if isinstance(self.dimension, TupleNode):
483 args = self.dimension.args
485 args = self.dimension,
486 values = [v.analyse_as_type(env) for v in args]
488 ix = values.index(None)
489 error(args[ix].pos, "Template parameter not a type.")
491 base_type = base_type.specialize_here(self.pos, values)
492 return self.base.analyse(base_type, env, nonempty = nonempty)
494 self.dimension.analyse_const_expression(env)
495 if not self.dimension.type.is_int:
496 error(self.dimension.pos, "Array dimension not integer")
497 size = self.dimension.get_constant_c_result_code()
506 if not base_type.is_complete():
508 "Array element type '%s' is incomplete" % base_type)
509 if base_type.is_pyobject:
511 "Array element cannot be a Python object")
512 if base_type.is_cfunction:
514 "Array element cannot be a function")
515 array_type = PyrexTypes.c_array_type(base_type, size)
516 return self.base.analyse(array_type, env, nonempty = nonempty)
519 class CFuncDeclaratorNode(CDeclaratorNode):
520 # base CDeclaratorNode
521 # args [CArgDeclNode]
522 # has_varargs boolean
523 # exception_value ConstNode
524 # exception_check boolean True if PyErr_Occurred check needed
525 # nogil boolean Can be called without gil
526 # with_gil boolean Acquire gil around function body
528 child_attrs = ["base", "args", "exception_value"]
531 optional_arg_count = 0
533 def analyse(self, return_type, env, nonempty = 0):
537 for i, arg_node in enumerate(self.args):
538 name_declarator, type = arg_node.analyse(env, nonempty = nonempty,
539 is_self_arg = (i == 0 and env.is_c_class_scope))
540 name = name_declarator.name
541 if name_declarator.cname:
543 "Function argument cannot have C name specification")
544 # Turn *[] argument into **
546 type = PyrexTypes.c_ptr_type(type.base_type)
547 # Catch attempted C-style func(void) decl
549 error(arg_node.pos, "Use spam() rather than spam(void) to declare a function with no arguments.")
550 func_type_args.append(
551 PyrexTypes.CFuncTypeArg(name, type, arg_node.pos))
553 self.optional_arg_count += 1
554 elif self.optional_arg_count:
555 error(self.pos, "Non-default argument follows default argument")
557 if self.optional_arg_count:
558 scope = StructOrUnionScope()
559 arg_count_member = '%sn' % Naming.pyrex_prefix
560 scope.declare_var(arg_count_member, PyrexTypes.c_int_type, self.pos)
561 for arg in func_type_args[len(func_type_args)-self.optional_arg_count:]:
562 scope.declare_var(arg.name, arg.type, arg.pos, allow_pyobject = 1)
563 struct_cname = env.mangle(Naming.opt_arg_prefix, self.base.name)
564 self.op_args_struct = env.global_scope().declare_struct_or_union(name = struct_cname,
569 cname = struct_cname)
570 self.op_args_struct.defined_in_pxd = 1
571 self.op_args_struct.used = 1
575 if self.exception_check == '+':
576 env.add_include_file('stdexcept')
577 if return_type.is_pyobject \
578 and (self.exception_value or self.exception_check) \
579 and self.exception_check != '+':
581 "Exception clause not allowed for function returning Python object")
583 if self.exception_value:
584 self.exception_value.analyse_const_expression(env)
585 if self.exception_check == '+':
586 self.exception_value.analyse_types(env)
587 exc_val_type = self.exception_value.type
588 if not exc_val_type.is_error and \
589 not exc_val_type.is_pyobject and \
590 not (exc_val_type.is_cfunction and not exc_val_type.return_type.is_pyobject and len(exc_val_type.args)==0):
591 error(self.exception_value.pos,
592 "Exception value must be a Python exception or cdef function with no arguments.")
593 exc_val = self.exception_value
595 self.exception_value = self.exception_value.coerce_to(return_type, env)
596 if self.exception_value.analyse_const_expression(env):
597 exc_val = self.exception_value.get_constant_c_result_code()
599 raise InternalError("get_constant_c_result_code not implemented for %s" %
600 self.exception_value.__class__.__name__)
601 if not return_type.assignable_from(self.exception_value.type):
602 error(self.exception_value.pos,
603 "Exception value incompatible with function return type")
604 exc_check = self.exception_check
605 if return_type.is_array:
607 "Function cannot return an array")
608 if return_type.is_cfunction:
610 "Function cannot return a function")
611 func_type = PyrexTypes.CFuncType(
612 return_type, func_type_args, self.has_varargs,
613 optional_arg_count = self.optional_arg_count,
614 exception_value = exc_val, exception_check = exc_check,
615 calling_convention = self.base.calling_convention,
616 nogil = self.nogil, with_gil = self.with_gil, is_overridable = self.overridable)
617 if self.optional_arg_count:
618 func_type.op_arg_struct = PyrexTypes.c_ptr_type(self.op_args_struct.type)
619 callspec = env.directives['callspec']
621 current = func_type.calling_convention
622 if current and current != callspec:
623 error(self.pos, "cannot have both '%s' and '%s' "
624 "calling conventions" % (current, callspec))
625 func_type.calling_convention = callspec
626 return self.base.analyse(func_type, env)
629 class CArgDeclNode(Node):
630 # Item in a function declaration argument list.
632 # base_type CBaseTypeNode
633 # declarator CDeclaratorNode
634 # not_none boolean Tagged with 'not None'
635 # or_none boolean Tagged with 'or None'
636 # accept_none boolean Resolved boolean for not_none/or_none
637 # default ExprNode or None
638 # default_value PyObjectConst constant for default value
639 # annotation ExprNode or None Py3 function arg annotation
640 # is_self_arg boolean Is the "self" arg of an extension type method
641 # is_type_arg boolean Is the "class" arg of an extension type classmethod
642 # is_kw_only boolean Is a keyword-only argument
644 child_attrs = ["base_type", "declarator", "default"]
650 name_declarator = None
654 def analyse(self, env, nonempty = 0, is_self_arg = False):
656 self.base_type.is_self_arg = self.is_self_arg = True
657 if self.type is None:
658 # The parser may missinterpret names as types...
660 if isinstance(self.declarator, CNameDeclaratorNode) and self.declarator.name == '':
662 self.declarator.name = self.base_type.name
663 self.base_type.name = None
664 self.base_type.is_basic_c_type = False
667 could_be_name = False
668 base_type = self.base_type.analyse(env, could_be_name = could_be_name)
669 if hasattr(self.base_type, 'arg_name') and self.base_type.arg_name:
670 self.declarator.name = self.base_type.arg_name
671 # The parser is unable to resolve the ambiguity of [] as part of the
672 # type (e.g. in buffers) or empty declarator (as with arrays).
673 # This is only arises for empty multi-dimensional arrays.
674 if (base_type.is_array
675 and isinstance(self.base_type, TemplatedTypeNode)
676 and isinstance(self.declarator, CArrayDeclaratorNode)):
677 declarator = self.declarator
678 while isinstance(declarator.base, CArrayDeclaratorNode):
679 declarator = declarator.base
680 declarator.base = self.base_type.array_declarator
681 base_type = base_type.base_type
682 return self.declarator.analyse(base_type, env, nonempty = nonempty)
684 return self.name_declarator, self.type
686 def calculate_default_value_code(self, code):
687 if self.default_value is None:
689 if self.default.is_literal:
690 # will not output any code, just assign the result_code
691 self.default.generate_evaluation_code(code)
692 return self.type.cast_code(self.default.result())
693 self.default_value = code.get_argument_default_const(self.type)
694 return self.default_value
696 def annotate(self, code):
698 self.default.annotate(code)
701 class CBaseTypeNode(Node):
702 # Abstract base class for C base type nodes.
704 # Processing during analyse_declarations phase:
711 def analyse_as_type(self, env):
712 return self.analyse(env)
714 class CAnalysedBaseTypeNode(Node):
719 def analyse(self, env, could_be_name = False):
722 class CSimpleBaseTypeNode(CBaseTypeNode):
724 # module_path [string] Qualifying name components
725 # is_basic_c_type boolean
729 # is_self_arg boolean Is self argument of C method
730 # ##is_type_arg boolean Is type argument of class method
733 arg_name = None # in case the argument name was interpreted as a type
735 def analyse(self, env, could_be_name = False):
736 # Return type descriptor.
737 #print "CSimpleBaseTypeNode.analyse: is_self_arg =", self.is_self_arg ###
739 if self.is_basic_c_type:
740 type = PyrexTypes.simple_c_type(self.signed, self.longness, self.name)
742 error(self.pos, "Unrecognised type modifier combination")
743 elif self.name == "object" and not self.module_path:
744 type = py_object_type
745 elif self.name is None:
746 if self.is_self_arg and env.is_c_class_scope:
747 #print "CSimpleBaseTypeNode.analyse: defaulting to parent type" ###
748 type = env.parent_type
749 ## elif self.is_type_arg and env.is_c_class_scope:
750 ## type = Builtin.type_type
752 type = py_object_type
755 scope = env.find_imported_module(self.module_path, self.pos)
759 if scope.is_c_class_scope:
760 scope = scope.global_scope()
761 entry = scope.lookup(self.name)
762 if entry and entry.is_type:
765 if self.is_self_arg and env.is_c_class_scope:
766 type = env.parent_type
767 ## elif self.is_type_arg and env.is_c_class_scope:
768 ## type = Builtin.type_type
770 type = py_object_type
771 self.arg_name = self.name
774 if not self.name in self.templates:
775 error(self.pos, "'%s' is not a type identifier" % self.name)
776 type = PyrexTypes.TemplatePlaceholderType(self.name)
778 error(self.pos, "'%s' is not a type identifier" % self.name)
780 if not type.is_numeric or type.is_complex:
781 error(self.pos, "can only complexify c numeric types")
782 type = PyrexTypes.CComplexType(type)
783 type.create_declaration_utility_code(env)
787 return PyrexTypes.error_type
789 class CNestedBaseTypeNode(CBaseTypeNode):
790 # For C++ classes that live inside other C++ classes.
793 # base_type CBaseTypeNode
795 child_attrs = ['base_type']
797 def analyse(self, env, could_be_name = None):
798 base_type = self.base_type.analyse(env)
799 if base_type is PyrexTypes.error_type:
800 return PyrexTypes.error_type
801 if not base_type.is_cpp_class:
802 error(self.pos, "'%s' is not a valid type scope" % base_type)
803 return PyrexTypes.error_type
804 type_entry = base_type.scope.lookup_here(self.name)
805 if not type_entry or not type_entry.is_type:
806 error(self.pos, "'%s.%s' is not a type identifier" % (base_type, self.name))
807 return PyrexTypes.error_type
808 return type_entry.type
810 class TemplatedTypeNode(CBaseTypeNode):
812 # positional_args [ExprNode] List of positional arguments
813 # keyword_args DictNode Keyword arguments
814 # base_type_node CBaseTypeNode
817 # type PyrexTypes.BufferType or PyrexTypes.CppClassType ...containing the right options
820 child_attrs = ["base_type_node", "positional_args",
821 "keyword_args", "dtype_node"]
827 def analyse(self, env, could_be_name = False, base_type = None):
828 if base_type is None:
829 base_type = self.base_type_node.analyse(env)
830 if base_type.is_error: return base_type
832 if base_type.is_cpp_class:
834 if self.keyword_args and self.keyword_args.key_value_pairs:
835 error(self.pos, "c++ templates cannot take keyword arguments");
836 self.type = PyrexTypes.error_type
839 for template_node in self.positional_args:
840 type = template_node.analyse_as_type(env)
842 error(template_node.pos, "unknown type in template argument")
844 template_types.append(type)
845 self.type = base_type.specialize_here(self.pos, template_types)
847 elif base_type.is_pyobject:
851 options = Buffer.analyse_buffer_options(
854 self.positional_args,
856 base_type.buffer_defaults)
858 if sys.version_info[0] < 3:
859 # Py 2.x enforces byte strings as keyword arguments ...
860 options = dict([ (name.encode('ASCII'), value)
861 for name, value in options.iteritems() ])
863 self.type = PyrexTypes.BufferType(base_type, **options)
867 empty_declarator = CNameDeclaratorNode(self.pos, name="", cname=None)
868 if len(self.positional_args) > 1 or self.keyword_args.key_value_pairs:
869 error(self.pos, "invalid array declaration")
870 self.type = PyrexTypes.error_type
872 # It would be nice to merge this class with CArrayDeclaratorNode,
873 # but arrays are part of the declaration, not the type...
874 if not self.positional_args:
877 dimension = self.positional_args[0]
878 self.array_declarator = CArrayDeclaratorNode(self.pos,
879 base = empty_declarator,
880 dimension = dimension)
881 self.type = self.array_declarator.analyse(base_type, env)[1]
885 class CComplexBaseTypeNode(CBaseTypeNode):
886 # base_type CBaseTypeNode
887 # declarator CDeclaratorNode
889 child_attrs = ["base_type", "declarator"]
891 def analyse(self, env, could_be_name = False):
892 base = self.base_type.analyse(env, could_be_name)
893 _, type = self.declarator.analyse(base, env)
897 class CVarDefNode(StatNode):
898 # C variable definition or forward/extern function declaration.
900 # visibility 'private' or 'public' or 'extern'
901 # base_type CBaseTypeNode
902 # declarators [CDeclaratorNode]
906 # decorators [cython.locals(...)] or None
907 # directive_locals { string : NameNode } locals defined by cython.locals(...)
909 child_attrs = ["base_type", "declarators"]
912 directive_locals = {}
914 def analyse_declarations(self, env, dest_scope = None):
917 self.dest_scope = dest_scope
918 base_type = self.base_type.analyse(env)
920 # If the field is an external typedef, we cannot be sure about the type,
921 # so do conversion ourself rather than rely on the CPython mechanism (through
922 # a property; made in AnalyseDeclarationsTransform).
923 if (dest_scope.is_c_class_scope
924 and self.visibility in ('public', 'readonly')):
927 need_property = False
928 visibility = self.visibility
930 for declarator in self.declarators:
931 name_declarator, type = declarator.analyse(base_type, env)
932 if not type.is_complete():
933 if not (self.visibility == 'extern' and type.is_array):
934 error(declarator.pos,
935 "Variable type '%s' is incomplete" % type)
936 if self.visibility == 'extern' and type.is_pyobject:
937 error(declarator.pos,
938 "Python object cannot be declared extern")
939 name = name_declarator.name
940 cname = name_declarator.cname
942 error(declarator.pos, "Missing name in declaration.")
944 if type.is_cfunction:
945 entry = dest_scope.declare_cfunction(name, type, declarator.pos,
946 cname = cname, visibility = self.visibility, in_pxd = self.in_pxd,
948 if entry is not None:
949 entry.directive_locals = self.directive_locals
951 if self.directive_locals:
952 s.error("Decorators can only be followed by functions")
953 if self.in_pxd and self.visibility != 'extern':
955 "Only 'extern' C variable declaration allowed in .pxd file")
956 entry = dest_scope.declare_var(name, type, declarator.pos,
957 cname = cname, visibility = visibility, is_cdef = 1)
958 entry.needs_property = need_property
961 class CStructOrUnionDefNode(StatNode):
963 # cname string or None
964 # kind "struct" or "union"
965 # typedef_flag boolean
966 # visibility "public" or "private"
968 # attributes [CVarDefNode] or None
972 child_attrs = ["attributes"]
974 def analyse_declarations(self, env):
976 if self.visibility == 'extern' and self.packed:
977 error(self.pos, "Cannot declare extern struct as 'packed'")
978 if self.attributes is not None:
979 scope = StructOrUnionScope(self.name)
980 self.entry = env.declare_struct_or_union(
981 self.name, self.kind, scope, self.typedef_flag, self.pos,
982 self.cname, visibility = self.visibility, packed = self.packed)
983 if self.attributes is not None:
984 if self.in_pxd and not env.in_cinclude:
985 self.entry.defined_in_pxd = 1
986 for attr in self.attributes:
987 attr.analyse_declarations(env, scope)
988 if self.visibility != 'extern':
989 need_typedef_indirection = False
990 for attr in scope.var_entries:
993 type = type.base_type
994 if type == self.entry.type:
995 error(attr.pos, "Struct cannot contain itself as a member.")
996 if self.typedef_flag:
998 type = type.base_type
999 if type == self.entry.type:
1000 need_typedef_indirection = True
1001 if need_typedef_indirection:
1002 # C can't handle typedef structs that refer to themselves.
1003 struct_entry = self.entry
1004 self.entry = env.declare_typedef(
1005 self.name, struct_entry.type, self.pos,
1006 cname = self.cname, visibility='ignore')
1007 struct_entry.type.typedef_flag = False
1008 # FIXME: this might be considered a hack ;-)
1009 struct_entry.cname = struct_entry.type.cname = \
1010 '_' + self.entry.type.typedef_cname
1012 def analyse_expressions(self, env):
1015 def generate_execution_code(self, code):
1019 class CppClassNode(CStructOrUnionDefNode):
1022 # cname string or None
1023 # visibility "extern"
1025 # attributes [CVarDefNode] or None
1027 # base_classes [string]
1028 # templates [string] or None
1030 def analyse_declarations(self, env):
1032 if self.attributes is not None:
1033 scope = CppClassScope(self.name, env)
1034 base_class_types = []
1035 for base_class_name in self.base_classes:
1036 base_class_entry = env.lookup(base_class_name)
1037 if base_class_entry is None:
1038 error(self.pos, "'%s' not found" % base_class_name)
1039 elif not base_class_entry.is_type or not base_class_entry.type.is_cpp_class:
1040 error(self.pos, "'%s' is not a cpp class type" % base_class_name)
1042 base_class_types.append(base_class_entry.type)
1043 if self.templates is None:
1044 template_types = None
1046 template_types = [PyrexTypes.TemplatePlaceholderType(template_name) for template_name in self.templates]
1047 self.entry = env.declare_cpp_class(
1048 self.name, scope, self.pos,
1049 self.cname, base_class_types, visibility = self.visibility, templates = template_types)
1050 self.entry.is_cpp_class = 1
1051 if self.attributes is not None:
1052 if self.in_pxd and not env.in_cinclude:
1053 self.entry.defined_in_pxd = 1
1054 for attr in self.attributes:
1055 attr.analyse_declarations(scope)
1057 class CEnumDefNode(StatNode):
1058 # name string or None
1059 # cname string or None
1060 # items [CEnumDefItemNode]
1061 # typedef_flag boolean
1062 # visibility "public" or "private"
1066 child_attrs = ["items"]
1068 def analyse_declarations(self, env):
1069 self.entry = env.declare_enum(self.name, self.pos,
1070 cname = self.cname, typedef_flag = self.typedef_flag,
1071 visibility = self.visibility)
1072 if self.items is not None:
1073 if self.in_pxd and not env.in_cinclude:
1074 self.entry.defined_in_pxd = 1
1075 for item in self.items:
1076 item.analyse_declarations(env, self.entry)
1078 def analyse_expressions(self, env):
1081 def generate_execution_code(self, code):
1082 if self.visibility == 'public':
1083 temp = code.funcstate.allocate_temp(PyrexTypes.py_object_type, manage_ref=True)
1084 for item in self.entry.enum_values:
1085 code.putln("%s = PyInt_FromLong(%s); %s" % (
1088 code.error_goto_if_null(temp, item.pos)))
1089 code.put_gotref(temp)
1090 code.putln('if (__Pyx_SetAttrString(%s, "%s", %s) < 0) %s' % (
1091 Naming.module_cname,
1094 code.error_goto(item.pos)))
1095 code.put_decref_clear(temp, PyrexTypes.py_object_type)
1096 code.funcstate.release_temp(temp)
1099 class CEnumDefItemNode(StatNode):
1101 # cname string or None
1102 # value ExprNode or None
1104 child_attrs = ["value"]
1106 def analyse_declarations(self, env, enum_entry):
1108 self.value.analyse_const_expression(env)
1109 if not self.value.type.is_int:
1110 self.value = self.value.coerce_to(PyrexTypes.c_int_type, env)
1111 self.value.analyse_const_expression(env)
1112 entry = env.declare_const(self.name, enum_entry.type,
1113 self.value, self.pos, cname = self.cname,
1114 visibility = enum_entry.visibility)
1115 enum_entry.enum_values.append(entry)
1118 class CTypeDefNode(StatNode):
1119 # base_type CBaseTypeNode
1120 # declarator CDeclaratorNode
1121 # visibility "public" or "private"
1124 child_attrs = ["base_type", "declarator"]
1126 def analyse_declarations(self, env):
1127 base = self.base_type.analyse(env)
1128 name_declarator, type = self.declarator.analyse(base, env)
1129 name = name_declarator.name
1130 cname = name_declarator.cname
1131 entry = env.declare_typedef(name, type, self.pos,
1132 cname = cname, visibility = self.visibility)
1133 if self.in_pxd and not env.in_cinclude:
1134 entry.defined_in_pxd = 1
1136 def analyse_expressions(self, env):
1138 def generate_execution_code(self, code):
1142 class FuncDefNode(StatNode, BlockNode):
1143 # Base class for function definition nodes.
1145 # return_type PyrexType
1146 # #filename string C name of filename string const
1147 # entry Symtab.Entry
1148 # needs_closure boolean Whether or not this function has inner functions/classes/yield
1149 # directive_locals { string : NameNode } locals defined by cython.locals(...)
1153 needs_closure = False
1156 def analyse_default_values(self, env):
1157 genv = env.global_scope()
1159 for arg in self.args:
1163 arg.default.analyse_types(env)
1164 arg.default = arg.default.coerce_to(arg.type, genv)
1167 "This argument cannot have a default value")
1172 error(arg.pos, "Non-default argument following default argument")
1174 def need_gil_acquisition(self, lenv):
1177 def create_local_scope(self, env):
1179 while genv.is_py_class_scope or genv.is_c_class_scope:
1180 genv = env.outer_scope
1181 if self.needs_closure:
1182 lenv = ClosureScope(name=self.entry.name,
1184 scope_name=self.entry.cname)
1186 lenv = LocalScope(name=self.entry.name,
1189 lenv.return_type = self.return_type
1190 type = self.entry.type
1191 if type.is_cfunction:
1192 lenv.nogil = type.nogil and not type.with_gil
1193 self.local_scope = lenv
1194 lenv.directives = env.directives
1197 def generate_function_definitions(self, env, code):
1200 lenv = self.local_scope
1201 if lenv.is_closure_scope:
1202 outer_scope_cname = "%s->%s" % (Naming.cur_scope_cname,
1203 Naming.outer_scope_cname)
1205 outer_scope_cname = Naming.outer_scope_cname
1206 lenv.mangle_closure_cnames(outer_scope_cname)
1207 # Generate closure function definitions
1208 self.body.generate_function_definitions(lenv, code)
1209 # generate lambda function definitions
1210 for node in lenv.lambda_defs:
1211 node.generate_function_definitions(lenv, code)
1213 is_getbuffer_slot = (self.entry.name == "__getbuffer__" and
1214 self.entry.scope.is_c_class_scope)
1215 is_releasebuffer_slot = (self.entry.name == "__releasebuffer__" and
1216 self.entry.scope.is_c_class_scope)
1217 is_buffer_slot = is_getbuffer_slot or is_releasebuffer_slot
1219 if 'cython_unused' not in self.modifiers:
1220 self.modifiers = self.modifiers + ['cython_unused']
1222 preprocessor_guard = None
1223 if self.entry.is_special and not is_buffer_slot:
1224 slot = TypeSlots.method_name_to_slot.get(self.entry.name)
1226 preprocessor_guard = slot.preprocessor_guard_code()
1227 if (self.entry.name == '__long__' and
1228 not self.entry.scope.lookup_here('__int__')):
1229 preprocessor_guard = None
1231 profile = code.globalstate.directives['profile']
1234 error(self.pos, "Cannot profile nogil function.")
1235 code.globalstate.use_utility_code(profile_utility_code)
1237 # Generate C code for header and body of function
1238 code.enter_cfunc_scope()
1239 code.return_from_error_cleanup_label = code.new_label()
1241 # ----- Top-level constants used by this function
1242 code.mark_pos(self.pos)
1243 self.generate_cached_builtins_decls(lenv, code)
1244 # ----- Function header
1247 if preprocessor_guard:
1248 code.putln(preprocessor_guard)
1250 with_pymethdef = self.needs_assignment_synthesis(env, code)
1252 self.py_func.generate_function_header(code,
1253 with_pymethdef = with_pymethdef,
1255 self.generate_function_header(code,
1256 with_pymethdef = with_pymethdef)
1257 # ----- Local variable declarations
1258 if lenv.is_closure_scope:
1259 code.put(lenv.scope_class.type.declaration_code(Naming.cur_scope_cname))
1261 elif env.is_closure_scope:
1262 code.put(env.scope_class.type.declaration_code(Naming.outer_scope_cname))
1264 self.generate_argument_declarations(lenv, code)
1265 for entry in lenv.var_entries:
1266 if not entry.in_closure:
1267 code.put_var_declaration(entry)
1269 if not self.return_type.is_void:
1270 if self.return_type.is_pyobject:
1274 (self.return_type.declaration_code(Naming.retval_cname),
1276 tempvardecl_code = code.insertion_point()
1277 self.generate_keyword_list(code)
1279 code.put_trace_declarations()
1280 # ----- Extern library function declarations
1281 lenv.generate_library_function_declarations(code)
1282 # ----- GIL acquisition
1283 acquire_gil = self.acquire_gil
1285 env.use_utility_code(force_init_threads_utility_code)
1286 code.putln("#ifdef WITH_THREAD")
1287 code.putln("PyGILState_STATE _save = PyGILState_Ensure();")
1288 code.putln("#endif")
1289 # ----- set up refnanny
1291 code.put_setup_refcount_context(self.entry.name)
1292 # ----- Automatic lead-ins for certain special functions
1293 if is_getbuffer_slot:
1294 self.getbuffer_init(code)
1295 # ----- Create closure scope object
1296 if self.needs_closure:
1297 code.putln("%s = (%s)%s->tp_new(%s, %s, NULL);" % (
1298 Naming.cur_scope_cname,
1299 lenv.scope_class.type.declaration_code(''),
1300 lenv.scope_class.type.typeptr_cname,
1301 lenv.scope_class.type.typeptr_cname,
1302 Naming.empty_tuple))
1303 code.putln("if (unlikely(!%s)) {" % Naming.cur_scope_cname)
1304 if is_getbuffer_slot:
1305 self.getbuffer_error_cleanup(code)
1307 code.put_finish_refcount_context()
1308 # FIXME: what if the error return value is a Python value?
1309 code.putln("return %s;" % self.error_value())
1311 code.put_gotref(Naming.cur_scope_cname)
1312 # Note that it is unsafe to decref the scope at this point.
1313 if env.is_closure_scope:
1314 code.putln("%s = (%s)%s;" % (
1316 env.scope_class.type.declaration_code(''),
1318 if self.needs_closure:
1319 # inner closures own a reference to their outer parent
1320 code.put_incref(outer_scope_cname, env.scope_class.type)
1321 code.put_giveref(outer_scope_cname)
1322 # ----- Trace function call
1324 # this looks a bit late, but if we don't get here due to a
1325 # fatal error before hand, it's not really worth tracing
1326 code.put_trace_call(self.entry.name, self.pos)
1327 # ----- Fetch arguments
1328 self.generate_argument_parsing_code(env, code)
1329 # If an argument is assigned to in the body, we must
1330 # incref it to properly keep track of refcounts.
1331 for entry in lenv.arg_entries:
1332 if entry.type.is_pyobject:
1333 if entry.assignments and not entry.in_closure:
1334 code.put_var_incref(entry)
1335 # ----- Initialise local variables
1336 for entry in lenv.var_entries:
1337 if entry.type.is_pyobject and entry.init_to_none and entry.used:
1338 code.put_init_var_to_py_none(entry)
1339 # ----- Initialise local buffer auxiliary variables
1340 for entry in lenv.var_entries + lenv.arg_entries:
1341 if entry.type.is_buffer and entry.buffer_aux.buffer_info_var.used:
1342 code.putln("%s.buf = NULL;" %
1343 entry.buffer_aux.buffer_info_var.cname)
1344 # ----- Check and convert arguments
1345 self.generate_argument_type_tests(code)
1346 # ----- Acquire buffer arguments
1347 for entry in lenv.arg_entries:
1348 if entry.type.is_buffer:
1349 Buffer.put_acquire_arg_buffer(entry, code, self.pos)
1351 # -------------------------
1352 # ----- Function body -----
1353 # -------------------------
1354 self.body.generate_execution_code(code)
1356 # ----- Default return value
1358 if self.return_type.is_pyobject:
1359 #if self.return_type.is_extension_type:
1360 # lhs = "(PyObject *)%s" % Naming.retval_cname
1362 lhs = Naming.retval_cname
1363 code.put_init_to_py_none(lhs, self.return_type)
1365 val = self.return_type.default_value
1367 code.putln("%s = %s;" % (Naming.retval_cname, val))
1368 # ----- Error cleanup
1369 if code.error_label in code.labels_used:
1370 code.put_goto(code.return_label)
1371 code.put_label(code.error_label)
1372 for cname, type in code.funcstate.all_managed_temps():
1373 code.put_xdecref(cname, type)
1375 # Clean up buffers -- this calls a Python function
1376 # so need to save and restore error state
1377 buffers_present = len(lenv.buffer_entries) > 0
1379 code.globalstate.use_utility_code(restore_exception_utility_code)
1380 code.putln("{ PyObject *__pyx_type, *__pyx_value, *__pyx_tb;")
1381 code.putln("__Pyx_ErrFetch(&__pyx_type, &__pyx_value, &__pyx_tb);")
1382 for entry in lenv.buffer_entries:
1383 Buffer.put_release_buffer_code(code, entry)
1384 #code.putln("%s = 0;" % entry.cname)
1385 code.putln("__Pyx_ErrRestore(__pyx_type, __pyx_value, __pyx_tb);}")
1387 err_val = self.error_value()
1388 exc_check = self.caller_will_check_exceptions()
1389 if err_val is not None or exc_check:
1390 # TODO: Fix exception tracing (though currently unused by cProfile).
1391 # code.globalstate.use_utility_code(get_exception_tuple_utility_code)
1392 # code.put_trace_exception()
1393 code.putln('__Pyx_AddTraceback("%s");' % self.entry.qualified_name)
1395 warning(self.entry.pos, "Unraisable exception in function '%s'." \
1396 % self.entry.qualified_name, 0)
1398 '__Pyx_WriteUnraisable("%s");' %
1399 self.entry.qualified_name)
1400 env.use_utility_code(unraisable_exception_utility_code)
1401 env.use_utility_code(restore_exception_utility_code)
1402 default_retval = self.return_type.default_value
1403 if err_val is None and default_retval:
1404 err_val = default_retval
1405 if err_val is not None:
1406 code.putln("%s = %s;" % (Naming.retval_cname, err_val))
1408 if is_getbuffer_slot:
1409 self.getbuffer_error_cleanup(code)
1411 # If we are using the non-error cleanup section we should
1412 # jump past it if we have an error. The if-test below determine
1413 # whether this section is used.
1414 if buffers_present or is_getbuffer_slot:
1415 code.put_goto(code.return_from_error_cleanup_label)
1418 # ----- Non-error return cleanup
1419 code.put_label(code.return_label)
1420 for entry in lenv.buffer_entries:
1422 Buffer.put_release_buffer_code(code, entry)
1423 if is_getbuffer_slot:
1424 self.getbuffer_normal_cleanup(code)
1425 # ----- Return cleanup for both error and no-error return
1426 code.put_label(code.return_from_error_cleanup_label)
1427 if not Options.init_local_none:
1428 for entry in lenv.var_entries:
1429 if lenv.control_flow.get_state((entry.name, 'initialized')) is not True:
1430 entry.xdecref_cleanup = 1
1432 for entry in lenv.var_entries:
1433 if entry.type.is_pyobject:
1434 if entry.used and not entry.in_closure:
1435 code.put_var_decref(entry)
1436 elif entry.in_closure and self.needs_closure:
1437 code.put_giveref(entry.cname)
1438 # Decref any increfed args
1439 for entry in lenv.arg_entries:
1440 if entry.type.is_pyobject:
1441 if entry.in_closure:
1442 code.put_var_giveref(entry)
1443 elif entry.assignments:
1444 code.put_var_decref(entry)
1445 if self.needs_closure:
1446 code.put_decref(Naming.cur_scope_cname, lenv.scope_class.type)
1449 # This code is duplicated in ModuleNode.generate_module_init_func
1451 default_retval = self.return_type.default_value
1452 err_val = self.error_value()
1453 if err_val is None and default_retval:
1454 err_val = default_retval
1455 if self.return_type.is_pyobject:
1456 code.put_xgiveref(self.return_type.as_pyobject(Naming.retval_cname))
1458 if self.entry.is_special and self.entry.name == "__hash__":
1459 # Returning -1 for __hash__ is supposed to signal an error
1460 # We do as Python instances and coerce -1 into -2.
1461 code.putln("if (unlikely(%s == -1) && !PyErr_Occurred()) %s = -2;" % (
1462 Naming.retval_cname, Naming.retval_cname))
1465 if self.return_type.is_pyobject:
1466 code.put_trace_return(Naming.retval_cname)
1468 code.put_trace_return("Py_None")
1470 code.put_finish_refcount_context()
1473 code.putln("#ifdef WITH_THREAD")
1474 code.putln("PyGILState_Release(_save);")
1475 code.putln("#endif")
1477 if not self.return_type.is_void:
1478 code.putln("return %s;" % Naming.retval_cname)
1482 if preprocessor_guard:
1483 code.putln("#endif /*!(%s)*/" % preprocessor_guard)
1485 # ----- Go back and insert temp variable declarations
1486 tempvardecl_code.put_temp_declarations(code.funcstate)
1487 # ----- Python version
1488 code.exit_cfunc_scope()
1490 self.py_func.generate_function_definitions(env, code)
1491 self.generate_wrapper_functions(code)
1493 def declare_argument(self, env, arg):
1494 if arg.type.is_void:
1495 error(arg.pos, "Invalid use of 'void'")
1496 elif not arg.type.is_complete() and not arg.type.is_array:
1498 "Argument type '%s' is incomplete" % arg.type)
1499 return env.declare_arg(arg.name, arg.type, arg.pos)
1501 def generate_arg_type_test(self, arg, code):
1502 # Generate type test for one argument.
1503 if arg.type.typeobj_is_available():
1504 code.globalstate.use_utility_code(arg_type_test_utility_code)
1505 typeptr_cname = arg.type.typeptr_cname
1506 arg_code = "((PyObject *)%s)" % arg.entry.cname
1508 'if (unlikely(!__Pyx_ArgTypeTest(%s, %s, %d, "%s", %s))) %s' % (
1513 arg.type.is_builtin_type,
1514 code.error_goto(arg.pos)))
1516 error(arg.pos, "Cannot test type of extern C class "
1517 "without type object name specification")
1519 def generate_arg_none_check(self, arg, code):
1520 # Generate None check for one argument.
1521 code.globalstate.use_utility_code(arg_type_test_utility_code)
1522 code.putln('if (unlikely(((PyObject *)%s) == Py_None)) {' % arg.entry.cname)
1523 code.putln('''PyErr_Format(PyExc_TypeError, "Argument '%s' must not be None"); %s''' % (
1525 code.error_goto(arg.pos)))
1528 def generate_wrapper_functions(self, code):
1531 def generate_execution_code(self, code):
1532 # Evaluate and store argument default values
1533 for arg in self.args:
1534 default = arg.default
1536 if not default.is_literal:
1537 default.generate_evaluation_code(code)
1538 default.make_owned_reference(code)
1539 result = default.result_as(arg.type)
1542 arg.calculate_default_value_code(code),
1544 if arg.type.is_pyobject:
1545 code.put_giveref(default.result())
1546 default.generate_post_assignment_code(code)
1547 default.free_temps(code)
1548 # For Python class methods, create and store function object
1550 self.assmt.generate_execution_code(code)
1553 # Special code for the __getbuffer__ function
1555 def getbuffer_init(self, code):
1556 info = self.local_scope.arg_entries[1].cname
1557 # Python 3.0 betas have a bug in memoryview which makes it call
1558 # getbuffer with a NULL parameter. For now we work around this;
1559 # the following line should be removed when this bug is fixed.
1560 code.putln("if (%s == NULL) return 0;" % info)
1561 code.putln("%s->obj = Py_None; __Pyx_INCREF(Py_None);" % info)
1562 code.put_giveref("%s->obj" % info) # Do not refnanny object within structs
1564 def getbuffer_error_cleanup(self, code):
1565 info = self.local_scope.arg_entries[1].cname
1566 code.put_gotref("%s->obj" % info)
1567 code.putln("__Pyx_DECREF(%s->obj); %s->obj = NULL;" %
1570 def getbuffer_normal_cleanup(self, code):
1571 info = self.local_scope.arg_entries[1].cname
1572 code.putln("if (%s->obj == Py_None) {" % info)
1573 code.put_gotref("Py_None")
1574 code.putln("__Pyx_DECREF(Py_None); %s->obj = NULL;" % info)
1577 class CFuncDefNode(FuncDefNode):
1578 # C function definition.
1580 # modifiers ['inline']
1581 # visibility 'private' or 'public' or 'extern'
1582 # base_type CBaseTypeNode
1583 # declarator CDeclaratorNode
1586 # decorators [DecoratorNode] list of decorators
1588 # with_gil boolean Acquire GIL around body
1590 # py_func wrapper for calling from Python
1591 # overridable whether or not this is a cpdef function
1592 # inline_in_pxd whether this is an inline function in a pxd file
1594 child_attrs = ["base_type", "declarator", "body", "py_func"]
1596 inline_in_pxd = False
1598 directive_locals = {}
1600 def unqualified_name(self):
1601 return self.entry.name
1603 def analyse_declarations(self, env):
1604 self.directive_locals.update(env.directives['locals'])
1605 base_type = self.base_type.analyse(env)
1606 # The 2 here is because we need both function and argument names.
1607 name_declarator, type = self.declarator.analyse(base_type, env, nonempty = 2 * (self.body is not None))
1608 if not type.is_cfunction:
1610 "Suite attached to non-function declaration")
1611 # Remember the actual type according to the function header
1612 # written here, because the type in the symbol table entry
1613 # may be different if we're overriding a C method inherited
1614 # from the base type of an extension type.
1616 type.is_overridable = self.overridable
1617 declarator = self.declarator
1618 while not hasattr(declarator, 'args'):
1619 declarator = declarator.base
1620 self.args = declarator.args
1621 for formal_arg, type_arg in zip(self.args, type.args):
1622 formal_arg.type = type_arg.type
1623 formal_arg.name = type_arg.name
1624 formal_arg.cname = type_arg.cname
1625 name = name_declarator.name
1626 cname = name_declarator.cname
1627 self.entry = env.declare_cfunction(
1628 name, type, self.pos,
1629 cname = cname, visibility = self.visibility,
1630 defining = self.body is not None,
1631 api = self.api, modifiers = self.modifiers)
1632 self.entry.inline_func_in_pxd = self.inline_in_pxd
1633 self.return_type = type.return_type
1635 if self.overridable and not env.is_module_scope:
1636 if len(self.args) < 1 or not self.args[0].type.is_pyobject:
1637 # An error will be produced in the cdef function
1638 self.overridable = False
1640 if self.overridable:
1642 py_func_body = self.call_self_node(is_module_scope = env.is_module_scope)
1643 self.py_func = DefNode(pos = self.pos,
1644 name = self.entry.name,
1647 starstar_arg = None,
1649 body = py_func_body,
1651 self.py_func.is_module_scope = env.is_module_scope
1652 self.py_func.analyse_declarations(env)
1653 self.entry.as_variable = self.py_func.entry
1654 # Reset scope entry the above cfunction
1655 env.entries[name] = self.entry
1656 if not env.is_module_scope or Options.lookup_module_cpdef:
1657 self.override = OverrideCheckNode(self.pos, py_func = self.py_func)
1658 self.body = StatListNode(self.pos, stats=[self.override, self.body])
1659 self.create_local_scope(env)
1661 def call_self_node(self, omit_optional_args=0, is_module_scope=0):
1663 args = self.type.args
1664 if omit_optional_args:
1665 args = args[:len(args) - self.type.optional_arg_count]
1666 arg_names = [arg.name for arg in args]
1668 cfunc = ExprNodes.NameNode(self.pos, name=self.entry.name)
1670 self_arg = ExprNodes.NameNode(self.pos, name=arg_names[0])
1671 cfunc = ExprNodes.AttributeNode(self.pos, obj=self_arg, attribute=self.entry.name)
1672 skip_dispatch = not is_module_scope or Options.lookup_module_cpdef
1673 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)
1674 return ReturnStatNode(pos=self.pos, return_type=PyrexTypes.py_object_type, value=c_call)
1676 def declare_arguments(self, env):
1677 for arg in self.type.args:
1679 error(arg.pos, "Missing argument name")
1680 self.declare_argument(env, arg)
1682 def need_gil_acquisition(self, lenv):
1683 return self.type.with_gil
1685 def nogil_check(self, env):
1687 with_gil = type.with_gil
1688 if type.nogil and not with_gil:
1689 if type.return_type.is_pyobject:
1691 "Function with Python return type cannot be declared nogil")
1692 for entry in self.local_scope.var_entries:
1693 if entry.type.is_pyobject:
1694 error(self.pos, "Function declared nogil has Python locals or temporaries")
1696 def analyse_expressions(self, env):
1697 self.local_scope.directives = env.directives
1698 if self.py_func is not None:
1699 # this will also analyse the default values
1700 self.py_func.analyse_expressions(env)
1702 self.analyse_default_values(env)
1703 self.acquire_gil = self.need_gil_acquisition(self.local_scope)
1705 def needs_assignment_synthesis(self, env, code=None):
1708 def generate_function_header(self, code, with_pymethdef, with_opt_args = 1, with_dispatch = 1, cname = None):
1711 visibility = self.entry.visibility
1712 for arg in type.args[:len(type.args)-type.optional_arg_count]:
1713 arg_decls.append(arg.declaration_code())
1714 if with_dispatch and self.overridable:
1715 arg_decls.append(PyrexTypes.c_int_type.declaration_code(Naming.skip_dispatch_cname))
1716 if type.optional_arg_count and with_opt_args:
1717 arg_decls.append(type.op_arg_struct.declaration_code(Naming.optional_args_cname))
1718 if type.has_varargs:
1719 arg_decls.append("...")
1721 arg_decls = ["void"]
1723 cname = self.entry.func_cname
1724 entity = type.function_header_code(cname, ', '.join(arg_decls))
1725 if visibility == 'public':
1726 dll_linkage = "DL_EXPORT"
1729 header = self.return_type.declaration_code(entity,
1730 dll_linkage = dll_linkage)
1731 if visibility == 'extern':
1732 storage_class = "%s " % Naming.extern_c_macro
1733 elif visibility == 'public':
1736 storage_class = "static "
1737 if 'inline' in self.modifiers:
1738 self.modifiers[self.modifiers.index('inline')] = 'cython_inline'
1739 code.putln("%s%s %s {" % (
1741 ' '.join(self.modifiers).upper(), # macro forms
1744 def generate_argument_declarations(self, env, code):
1745 for arg in self.args:
1747 result = arg.calculate_default_value_code(code)
1748 code.putln('%s = %s;' % (
1749 arg.type.declaration_code(arg.cname), result))
1751 def generate_keyword_list(self, code):
1754 def generate_argument_parsing_code(self, env, code):
1756 if self.type.optional_arg_count:
1757 code.putln('if (%s) {' % Naming.optional_args_cname)
1758 for arg in self.args:
1760 code.putln('if (%s->%sn > %s) {' % (Naming.optional_args_cname, Naming.pyrex_prefix, i))
1761 declarator = arg.declarator
1762 while not hasattr(declarator, 'name'):
1763 declarator = declarator.base
1764 code.putln('%s = %s->%s;' % (arg.cname, Naming.optional_args_cname, self.type.opt_arg_cname(declarator.name)))
1766 for _ in range(self.type.optional_arg_count):
1770 def generate_argument_conversion_code(self, code):
1773 def generate_argument_type_tests(self, code):
1774 # Generate type tests for args whose type in a parent
1775 # class is a supertype of the declared type.
1776 for arg in self.type.args:
1777 if arg.needs_type_test:
1778 self.generate_arg_type_test(arg, code)
1779 elif arg.type.is_pyobject and not arg.accept_none:
1780 self.generate_arg_none_check(arg, code)
1782 def error_value(self):
1783 if self.return_type.is_pyobject:
1787 return self.entry.type.exception_value
1789 def caller_will_check_exceptions(self):
1790 return self.entry.type.exception_check
1792 def generate_wrapper_functions(self, code):
1793 # If the C signature of a function has changed, we need to generate
1794 # wrappers to put in the slots here.
1797 func_type = entry.type
1798 while entry.prev_entry is not None:
1800 entry = entry.prev_entry
1801 entry.func_cname = "%s%swrap_%s" % (self.entry.func_cname, Naming.pyrex_prefix, k)
1803 self.generate_function_header(code,
1805 with_dispatch = entry.type.is_overridable,
1806 with_opt_args = entry.type.optional_arg_count,
1807 cname = entry.func_cname)
1808 if not self.return_type.is_void:
1810 args = self.type.args
1811 arglist = [arg.cname for arg in args[:len(args)-self.type.optional_arg_count]]
1812 if entry.type.is_overridable:
1813 arglist.append(Naming.skip_dispatch_cname)
1814 elif func_type.is_overridable:
1816 if entry.type.optional_arg_count:
1817 arglist.append(Naming.optional_args_cname)
1818 elif func_type.optional_arg_count:
1819 arglist.append('NULL')
1820 code.putln('%s(%s);' % (self.entry.func_cname, ', '.join(arglist)))
1824 class PyArgDeclNode(Node):
1825 # Argument which must be a Python object (used
1826 # for * and ** arguments).
1829 # entry Symtab.Entry
1830 # annotation ExprNode or None Py3 argument annotation
1833 def generate_function_definitions(self, env, code):
1834 self.entry.generate_function_definitions(env, code)
1836 class DecoratorNode(Node):
1839 # decorator NameNode or CallNode or AttributeNode
1840 child_attrs = ['decorator']
1843 class DefNode(FuncDefNode):
1844 # A Python function definition.
1846 # name string the Python name of the function
1847 # lambda_name string the internal name of a lambda 'function'
1848 # decorators [DecoratorNode] list of decorators
1849 # args [CArgDeclNode] formal arguments
1850 # star_arg PyArgDeclNode or None * argument
1851 # starstar_arg PyArgDeclNode or None ** argument
1852 # doc EncodedString or None
1854 # return_type_annotation
1855 # ExprNode or None the Py3 return type annotation
1857 # The following subnode is constructed internally
1858 # when the def statement is inside a Python class definition.
1860 # assmt AssignmentNode Function construction/assignment
1862 child_attrs = ["args", "star_arg", "starstar_arg", "body", "decorators"]
1867 num_required_kw_args = 0
1868 reqd_kw_flags_cname = "0"
1871 return_type_annotation = None
1876 def __init__(self, pos, **kwds):
1877 FuncDefNode.__init__(self, pos, **kwds)
1879 for arg in self.args:
1886 self.num_kwonly_args = k
1887 self.num_required_kw_args = rk
1888 self.num_required_args = r
1890 def as_cfunction(self, cfunc=None, scope=None):
1892 error(self.star_arg.pos, "cdef function cannot have star argument")
1893 if self.starstar_arg:
1894 error(self.starstar_arg.pos, "cdef function cannot have starstar argument")
1897 for formal_arg in self.args:
1898 name_declarator, type = formal_arg.analyse(scope, nonempty=1)
1899 cfunc_args.append(PyrexTypes.CFuncTypeArg(name = name_declarator.name,
1901 type = py_object_type,
1902 pos = formal_arg.pos))
1903 cfunc_type = PyrexTypes.CFuncType(return_type = py_object_type,
1905 has_varargs = False,
1906 exception_value = None,
1907 exception_check = False,
1910 is_overridable = True)
1911 cfunc = CVarDefNode(self.pos, type=cfunc_type)
1915 cfunc_type = cfunc.type
1916 if len(self.args) != len(cfunc_type.args) or cfunc_type.has_varargs:
1917 error(self.pos, "wrong number of arguments")
1918 error(cfunc.pos, "previous declaration here")
1919 for i, (formal_arg, type_arg) in enumerate(zip(self.args, cfunc_type.args)):
1920 name_declarator, type = formal_arg.analyse(scope, nonempty=1,
1921 is_self_arg = (i == 0 and scope.is_c_class_scope))
1922 if type is None or type is PyrexTypes.py_object_type:
1923 formal_arg.type = type_arg.type
1924 formal_arg.name_declarator = name_declarator
1926 if cfunc_type.exception_value is None:
1927 exception_value = None
1929 exception_value = ExprNodes.ConstNode(self.pos, value=cfunc_type.exception_value, type=cfunc_type.return_type)
1930 declarator = CFuncDeclaratorNode(self.pos,
1931 base = CNameDeclaratorNode(self.pos, name=self.name, cname=None),
1933 has_varargs = False,
1934 exception_check = cfunc_type.exception_check,
1935 exception_value = exception_value,
1936 with_gil = cfunc_type.with_gil,
1937 nogil = cfunc_type.nogil)
1938 return CFuncDefNode(self.pos,
1940 base_type = CAnalysedBaseTypeNode(self.pos, type=cfunc_type.return_type),
1941 declarator = declarator,
1944 overridable = cfunc_type.is_overridable,
1946 with_gil = cfunc_type.with_gil,
1947 nogil = cfunc_type.nogil,
1948 visibility = 'private',
1950 directive_locals = getattr(cfunc, 'directive_locals', {}))
1952 def analyse_declarations(self, env):
1953 self.is_classmethod = self.is_staticmethod = False
1955 for decorator in self.decorators:
1956 func = decorator.decorator
1958 self.is_classmethod |= func.name == 'classmethod'
1959 self.is_staticmethod |= func.name == 'staticmethod'
1961 if self.is_classmethod and env.lookup_here('classmethod'):
1962 # classmethod() was overridden - not much we can do here ...
1963 self.is_classmethod = False
1964 if self.is_staticmethod and env.lookup_here('staticmethod'):
1965 # staticmethod() was overridden - not much we can do here ...
1966 self.is_staticmethod = False
1968 if self.name == '__new__':
1969 self.is_staticmethod = 1
1971 self.analyse_argument_types(env)
1972 if self.name == '<lambda>':
1973 self.declare_lambda_function(env)
1975 self.declare_pyfunction(env)
1976 self.analyse_signature(env)
1977 self.return_type = self.entry.signature.return_type()
1978 self.create_local_scope(env)
1980 def analyse_argument_types(self, env):
1981 directive_locals = self.directive_locals = env.directives['locals']
1982 allow_none_for_extension_args = env.directives['allow_none_for_extension_args']
1983 for arg in self.args:
1984 if hasattr(arg, 'name'):
1986 name_declarator = None
1988 base_type = arg.base_type.analyse(env)
1989 name_declarator, type = \
1990 arg.declarator.analyse(base_type, env)
1991 arg.name = name_declarator.name
1992 if arg.name in directive_locals:
1993 type_node = directive_locals[arg.name]
1994 other_type = type_node.analyse_as_type(env)
1995 if other_type is None:
1996 error(type_node.pos, "Not a type")
1997 elif (type is not PyrexTypes.py_object_type
1998 and not type.same_as(other_type)):
1999 error(arg.base_type.pos, "Signature does not agree with previous declaration")
2000 error(type_node.pos, "Previous declaration here")
2003 if name_declarator and name_declarator.cname:
2005 "Python function argument cannot have C name specification")
2006 arg.type = type.as_argument_type()
2008 arg.needs_conversion = 0
2009 arg.needs_type_test = 0
2011 if arg.type.is_pyobject:
2013 arg.accept_none = True
2015 arg.accept_none = False
2016 elif arg.type.is_extension_type or arg.type.is_builtin_type:
2017 if arg.default and arg.default.constant_result is None:
2018 # special case: def func(MyType obj = None)
2019 arg.accept_none = True
2021 # default depends on compiler directive
2022 arg.accept_none = allow_none_for_extension_args
2024 # probably just a plain 'object'
2025 arg.accept_none = True
2027 arg.accept_none = True # won't be used, but must be there
2029 error(arg.pos, "Only Python type arguments can have 'not None'")
2031 error(arg.pos, "Only Python type arguments can have 'or None'")
2033 def analyse_signature(self, env):
2034 if self.entry.is_special:
2035 self.entry.trivial_signature = len(self.args) == 1 and not (self.star_arg or self.starstar_arg)
2036 elif not env.directives['always_allow_keywords'] and not (self.star_arg or self.starstar_arg):
2037 # Use the simpler calling signature for zero- and one-argument functions.
2038 if self.entry.signature is TypeSlots.pyfunction_signature:
2039 if len(self.args) == 0:
2040 self.entry.signature = TypeSlots.pyfunction_noargs
2041 elif len(self.args) == 1:
2042 if self.args[0].default is None and not self.args[0].kw_only:
2043 self.entry.signature = TypeSlots.pyfunction_onearg
2044 elif self.entry.signature is TypeSlots.pymethod_signature:
2045 if len(self.args) == 1:
2046 self.entry.signature = TypeSlots.unaryfunc
2047 elif len(self.args) == 2:
2048 if self.args[1].default is None and not self.args[1].kw_only:
2049 self.entry.signature = TypeSlots.ibinaryfunc
2051 sig = self.entry.signature
2052 nfixed = sig.num_fixed_args()
2053 if sig is TypeSlots.pymethod_signature and nfixed == 1 \
2054 and len(self.args) == 0 and self.star_arg:
2055 # this is the only case where a diverging number of
2056 # arguments is not an error - when we have no explicit
2057 # 'self' parameter as in method(*args)
2058 sig = self.entry.signature = TypeSlots.pyfunction_signature # self is not 'really' used
2059 self.self_in_stararg = 1
2062 for i in range(min(nfixed, len(self.args))):
2065 if sig.is_self_arg(i) and not self.is_staticmethod:
2066 if self.is_classmethod:
2068 arg.hdr_type = arg.type = Builtin.type_type
2071 arg.hdr_type = arg.type = env.parent_type
2072 arg.needs_conversion = 0
2074 arg.hdr_type = sig.fixed_arg_type(i)
2075 if not arg.type.same_as(arg.hdr_type):
2076 if arg.hdr_type.is_pyobject and arg.type.is_pyobject:
2077 arg.needs_type_test = 1
2079 arg.needs_conversion = 1
2080 if arg.needs_conversion:
2081 arg.hdr_cname = Naming.arg_prefix + arg.name
2083 arg.hdr_cname = Naming.var_prefix + arg.name
2085 if nfixed > len(self.args):
2086 self.bad_signature()
2088 elif nfixed < len(self.args):
2089 if not sig.has_generic_args:
2090 self.bad_signature()
2091 for arg in self.args:
2092 if arg.is_generic and \
2093 (arg.type.is_extension_type or arg.type.is_builtin_type):
2094 arg.needs_type_test = 1
2096 def bad_signature(self):
2097 sig = self.entry.signature
2098 expected_str = "%d" % sig.num_fixed_args()
2099 if sig.has_generic_args:
2100 expected_str = expected_str + " or more"
2102 if name.startswith("__") and name.endswith("__"):
2103 desc = "Special method"
2107 "%s %s has wrong number of arguments "
2108 "(%d declared, %s expected)" % (
2109 desc, self.name, len(self.args), expected_str))
2111 def signature_has_nongeneric_args(self):
2112 argcount = len(self.args)
2113 if argcount == 0 or (
2114 argcount == 1 and (self.args[0].is_self_arg or
2115 self.args[0].is_type_arg)):
2119 def signature_has_generic_args(self):
2120 return self.entry.signature.has_generic_args
2122 def declare_pyfunction(self, env):
2123 #print "DefNode.declare_pyfunction:", self.name, "in", env ###
2125 entry = env.lookup_here(name)
2126 if entry and entry.type.is_cfunction and not self.is_wrapper:
2127 warning(self.pos, "Overriding cdef method with def method.", 5)
2128 entry = env.declare_pyfunction(name, self.pos)
2130 prefix = env.scope_prefix
2131 entry.func_cname = \
2132 Naming.pyfunc_prefix + prefix + name
2133 entry.pymethdef_cname = \
2134 Naming.pymethdef_prefix + prefix + name
2135 if Options.docstrings:
2136 entry.doc = embed_position(self.pos, self.doc)
2138 Naming.funcdoc_prefix + prefix + name
2139 if entry.is_special:
2140 if entry.name in TypeSlots.invisible or not entry.doc or (entry.name in '__getattr__' and env.directives['fast_getattr']):
2141 entry.wrapperbase_cname = None
2143 entry.wrapperbase_cname = Naming.wrapperbase_prefix + prefix + name
2147 def declare_lambda_function(self, env):
2149 prefix = env.scope_prefix
2151 Naming.lambda_func_prefix + u'funcdef' + prefix + self.lambda_name
2152 entry = env.declare_lambda_function(func_cname, self.pos)
2153 entry.pymethdef_cname = \
2154 Naming.lambda_func_prefix + u'methdef' + prefix + self.lambda_name
2155 entry.qualified_name = env.qualify_name(self.lambda_name)
2159 def declare_arguments(self, env):
2160 for arg in self.args:
2162 error(arg.pos, "Missing argument name")
2164 env.control_flow.set_state((), (arg.name, 'source'), 'arg')
2165 env.control_flow.set_state((), (arg.name, 'initialized'), True)
2166 if arg.needs_conversion:
2167 arg.entry = env.declare_var(arg.name, arg.type, arg.pos)
2168 if arg.type.is_pyobject:
2169 arg.entry.init = "0"
2170 arg.entry.init_to_none = 0
2172 arg.entry = self.declare_argument(env, arg)
2174 arg.entry.is_self_arg = arg.is_self_arg
2176 if arg.is_self_arg or arg.is_type_arg or \
2177 (arg.type.is_extension_type and not arg.hdr_type.is_extension_type):
2178 arg.entry.is_declared_generic = 1
2179 self.declare_python_arg(env, self.star_arg)
2180 self.declare_python_arg(env, self.starstar_arg)
2182 def declare_python_arg(self, env, arg):
2184 if env.directives['infer_types'] != False:
2185 type = PyrexTypes.unspecified_type
2187 type = py_object_type
2188 entry = env.declare_var(arg.name, type, arg.pos)
2191 entry.init_to_none = 0
2192 entry.xdecref_cleanup = 1
2194 env.control_flow.set_state((), (arg.name, 'initialized'), True)
2196 def analyse_expressions(self, env):
2197 self.local_scope.directives = env.directives
2198 self.analyse_default_values(env)
2199 if self.needs_assignment_synthesis(env):
2200 # Shouldn't we be doing this at the module level too?
2201 self.synthesize_assignment_node(env)
2203 def needs_assignment_synthesis(self, env, code=None):
2204 # Should enable for module level as well, that will require more testing...
2205 if env.is_module_scope:
2207 return env.directives['binding']
2209 return code.globalstate.directives['binding']
2210 return env.is_py_class_scope or env.is_closure_scope
2212 def synthesize_assignment_node(self, env):
2214 if env.is_py_class_scope:
2215 rhs = ExprNodes.PyCFunctionNode(self.pos,
2216 pymethdef_cname = self.entry.pymethdef_cname)
2217 if not self.is_staticmethod and not self.is_classmethod:
2220 elif env.is_closure_scope:
2221 rhs = ExprNodes.InnerFunctionNode(
2222 self.pos, pymethdef_cname = self.entry.pymethdef_cname)
2224 rhs = ExprNodes.PyCFunctionNode(
2225 self.pos, pymethdef_cname = self.entry.pymethdef_cname, binding = env.directives['binding'])
2226 self.assmt = SingleAssignmentNode(self.pos,
2227 lhs = ExprNodes.NameNode(self.pos, name = self.name),
2229 self.assmt.analyse_declarations(env)
2230 self.assmt.analyse_expressions(env)
2232 def generate_function_header(self, code, with_pymethdef, proto_only=0):
2234 sig = self.entry.signature
2235 if sig.has_dummy_arg or self.self_in_stararg:
2236 arg_code_list.append(
2237 "PyObject *%s" % Naming.self_cname)
2238 for arg in self.args:
2239 if not arg.is_generic:
2240 if arg.is_self_arg or arg.is_type_arg:
2241 arg_code_list.append("PyObject *%s" % arg.hdr_cname)
2243 arg_code_list.append(
2244 arg.hdr_type.declaration_code(arg.hdr_cname))
2245 if not self.entry.is_special and sig.method_flags() == [TypeSlots.method_noargs]:
2246 arg_code_list.append("CYTHON_UNUSED PyObject *unused")
2247 if sig.has_generic_args:
2248 arg_code_list.append(
2249 "PyObject *%s, PyObject *%s"
2250 % (Naming.args_cname, Naming.kwds_cname))
2251 arg_code = ", ".join(arg_code_list)
2252 dc = self.return_type.declaration_code(self.entry.func_cname)
2253 mf = " ".join(self.modifiers).upper()
2255 header = "static %s%s(%s)" % (mf, dc, arg_code)
2256 code.putln("%s; /*proto*/" % header)
2259 if (Options.docstrings and self.entry.doc and
2260 not self.entry.scope.is_property_scope and
2261 (not self.entry.is_special or self.entry.wrapperbase_cname)):
2262 docstr = self.entry.doc
2263 if docstr.is_unicode:
2264 docstr = docstr.utf8encode()
2266 'static char %s[] = "%s";' % (
2267 self.entry.doc_cname,
2268 split_string_literal(escape_byte_string(docstr))))
2269 if self.entry.is_special:
2271 "struct wrapperbase %s;" % self.entry.wrapperbase_cname)
2274 "static PyMethodDef %s = " %
2275 self.entry.pymethdef_cname)
2276 code.put_pymethoddef(self.entry, ";", allow_skip=False)
2277 code.putln("%s {" % header)
2279 def generate_argument_declarations(self, env, code):
2280 for arg in self.args:
2281 if arg.is_generic: # or arg.needs_conversion:
2282 if arg.needs_conversion:
2283 code.putln("PyObject *%s = 0;" % arg.hdr_cname)
2284 elif not arg.entry.in_closure:
2285 code.put_var_declaration(arg.entry)
2287 def generate_keyword_list(self, code):
2288 if self.signature_has_generic_args() and \
2289 self.signature_has_nongeneric_args():
2291 "static PyObject **%s[] = {" %
2292 Naming.pykwdlist_cname)
2293 for arg in self.args:
2295 pystring_cname = code.intern_identifier(arg.name)
2296 code.put('&%s,' % pystring_cname)
2299 def generate_argument_parsing_code(self, env, code):
2300 # Generate PyArg_ParseTuple call for generic
2301 # arguments, if any.
2302 if self.entry.signature.has_dummy_arg and not self.self_in_stararg:
2303 # get rid of unused argument warning
2304 code.putln("%s = %s;" % (Naming.self_cname, Naming.self_cname))
2306 old_error_label = code.new_error_label()
2307 our_error_label = code.error_label
2308 end_label = code.new_label("argument_unpacking_done")
2310 has_kwonly_args = self.num_kwonly_args > 0
2311 has_star_or_kw_args = self.star_arg is not None \
2312 or self.starstar_arg is not None or has_kwonly_args
2314 for arg in self.args:
2315 if not arg.type.is_pyobject:
2316 done = arg.type.create_from_py_utility_code(env)
2317 if not done: pass # will fail later
2319 if not self.signature_has_generic_args():
2320 if has_star_or_kw_args:
2321 error(self.pos, "This method cannot have * or keyword arguments")
2322 self.generate_argument_conversion_code(code)
2324 elif not self.signature_has_nongeneric_args():
2325 # func(*args) or func(**kw) or func(*args, **kw)
2326 self.generate_stararg_copy_code(code)
2329 positional_args = []
2331 for arg in self.args:
2332 arg_entry = arg.entry
2335 if not arg.is_self_arg and not arg.is_type_arg:
2337 kw_only_args.append(arg)
2339 positional_args.append(arg)
2341 kw_only_args.append(arg)
2342 elif not arg.is_self_arg and not arg.is_type_arg:
2343 positional_args.append(arg)
2345 self.generate_tuple_and_keyword_parsing_code(
2346 positional_args, kw_only_args, end_label, code)
2348 code.error_label = old_error_label
2349 if code.label_used(our_error_label):
2350 if not code.label_used(end_label):
2351 code.put_goto(end_label)
2352 code.put_label(our_error_label)
2353 if has_star_or_kw_args:
2354 self.generate_arg_decref(self.star_arg, code)
2355 if self.starstar_arg:
2356 if self.starstar_arg.entry.xdecref_cleanup:
2357 code.put_var_xdecref(self.starstar_arg.entry)
2359 code.put_var_decref(self.starstar_arg.entry)
2360 code.putln('__Pyx_AddTraceback("%s");' % self.entry.qualified_name)
2361 # The arguments are put into the closure one after the
2362 # other, so when type errors are found, all references in
2363 # the closure instance must be properly ref-counted to
2364 # facilitate generic closure instance deallocation. In
2365 # the case of an argument type error, it's best to just
2366 # DECREF+clear the already handled references, as this
2367 # frees their references as early as possible.
2368 for arg in self.args:
2369 if arg.type.is_pyobject and arg.entry.in_closure:
2370 code.put_var_xdecref_clear(arg.entry)
2371 if self.needs_closure:
2372 code.put_decref(Naming.cur_scope_cname, self.local_scope.scope_class.type)
2373 code.put_finish_refcount_context()
2374 code.putln("return %s;" % self.error_value())
2375 if code.label_used(end_label):
2376 code.put_label(end_label)
2378 def generate_arg_assignment(self, arg, item, code):
2379 if arg.type.is_pyobject:
2381 item = PyrexTypes.typecast(arg.type, PyrexTypes.py_object_type, item)
2383 code.putln("%s = %s;" % (entry.cname, item))
2384 if entry.in_closure:
2385 code.put_var_incref(entry)
2387 func = arg.type.from_py_function
2389 code.putln("%s = %s(%s); %s" % (
2393 code.error_goto_if(arg.type.error_condition(arg.entry.cname), arg.pos)))
2395 error(arg.pos, "Cannot convert Python object argument to type '%s'" % arg.type)
2397 def generate_arg_xdecref(self, arg, code):
2399 code.put_var_xdecref(arg.entry)
2401 def generate_arg_decref(self, arg, code):
2403 code.put_var_decref(arg.entry)
2405 def generate_stararg_copy_code(self, code):
2406 if not self.star_arg:
2407 code.globalstate.use_utility_code(raise_argtuple_invalid_utility_code)
2408 code.putln("if (unlikely(PyTuple_GET_SIZE(%s) > 0)) {" %
2410 code.put('__Pyx_RaiseArgtupleInvalid("%s", 1, 0, 0, PyTuple_GET_SIZE(%s)); return %s;' % (
2411 self.name, Naming.args_cname, self.error_value()))
2414 code.globalstate.use_utility_code(keyword_string_check_utility_code)
2416 if self.starstar_arg:
2418 kwarg_check = "unlikely(%s)" % Naming.kwds_cname
2420 kwarg_check = "%s" % Naming.kwds_cname
2422 kwarg_check = "unlikely(%s) && unlikely(PyDict_Size(%s) > 0)" % (
2423 Naming.kwds_cname, Naming.kwds_cname)
2425 "if (%s && unlikely(!__Pyx_CheckKeywordStrings(%s, \"%s\", %d))) return %s;" % (
2426 kwarg_check, Naming.kwds_cname, self.name,
2427 bool(self.starstar_arg), self.error_value()))
2429 if self.starstar_arg:
2430 code.putln("%s = (%s) ? PyDict_Copy(%s) : PyDict_New();" % (
2431 self.starstar_arg.entry.cname,
2434 code.putln("if (unlikely(!%s)) return %s;" % (
2435 self.starstar_arg.entry.cname, self.error_value()))
2436 self.starstar_arg.entry.xdecref_cleanup = 0
2437 code.put_gotref(self.starstar_arg.entry.cname)
2439 if self.self_in_stararg:
2440 # need to create a new tuple with 'self' inserted as first item
2441 code.put("%s = PyTuple_New(PyTuple_GET_SIZE(%s)+1); if (unlikely(!%s)) " % (
2442 self.star_arg.entry.cname,
2444 self.star_arg.entry.cname))
2445 if self.starstar_arg:
2447 code.put_decref_clear(self.starstar_arg.entry.cname, py_object_type)
2448 code.putln("return %s;" % self.error_value())
2451 code.putln("return %s;" % self.error_value())
2452 code.put_gotref(self.star_arg.entry.cname)
2453 code.put_incref(Naming.self_cname, py_object_type)
2454 code.put_giveref(Naming.self_cname)
2455 code.putln("PyTuple_SET_ITEM(%s, 0, %s);" % (
2456 self.star_arg.entry.cname, Naming.self_cname))
2457 temp = code.funcstate.allocate_temp(PyrexTypes.c_py_ssize_t_type, manage_ref=False)
2458 code.putln("for (%s=0; %s < PyTuple_GET_SIZE(%s); %s++) {" % (
2459 temp, temp, Naming.args_cname, temp))
2460 code.putln("PyObject* item = PyTuple_GET_ITEM(%s, %s);" % (
2461 Naming.args_cname, temp))
2462 code.put_incref("item", py_object_type)
2463 code.put_giveref("item")
2464 code.putln("PyTuple_SET_ITEM(%s, %s+1, item);" % (
2465 self.star_arg.entry.cname, temp))
2467 code.funcstate.release_temp(temp)
2468 self.star_arg.entry.xdecref_cleanup = 0
2470 code.put_incref(Naming.args_cname, py_object_type)
2471 code.putln("%s = %s;" % (
2472 self.star_arg.entry.cname,
2474 self.star_arg.entry.xdecref_cleanup = 0
2476 def generate_tuple_and_keyword_parsing_code(self, positional_args,
2477 kw_only_args, success_label, code):
2478 argtuple_error_label = code.new_label("argtuple_error")
2480 min_positional_args = self.num_required_args - self.num_required_kw_args
2481 if len(self.args) > 0 and (self.args[0].is_self_arg or self.args[0].is_type_arg):
2482 min_positional_args -= 1
2483 max_positional_args = len(positional_args)
2484 has_fixed_positional_count = not self.star_arg and \
2485 min_positional_args == max_positional_args
2487 code.globalstate.use_utility_code(raise_double_keywords_utility_code)
2488 code.globalstate.use_utility_code(raise_argtuple_invalid_utility_code)
2489 if self.num_required_kw_args:
2490 code.globalstate.use_utility_code(raise_keyword_required_utility_code)
2492 if self.starstar_arg or self.star_arg:
2493 self.generate_stararg_init_code(max_positional_args, code)
2495 # --- optimised code when we receive keyword arguments
2496 if self.num_required_kw_args:
2497 likely_hint = "likely"
2499 likely_hint = "unlikely"
2500 code.putln("if (%s(%s)) {" % (likely_hint, Naming.kwds_cname))
2501 self.generate_keyword_unpacking_code(
2502 min_positional_args, max_positional_args,
2503 has_fixed_positional_count,
2504 positional_args, kw_only_args, argtuple_error_label, code)
2506 # --- optimised code when we do not receive any keyword arguments
2507 if (self.num_required_kw_args and min_positional_args > 0) or min_positional_args == max_positional_args:
2508 # Python raises arg tuple related errors first, so we must
2509 # check the length here
2510 if min_positional_args == max_positional_args and not self.star_arg:
2514 code.putln('} else if (PyTuple_GET_SIZE(%s) %s %d) {' % (
2515 Naming.args_cname, compare, min_positional_args))
2516 code.put_goto(argtuple_error_label)
2518 if self.num_required_kw_args:
2519 # pure error case: keywords required but not passed
2520 if max_positional_args > min_positional_args and not self.star_arg:
2521 code.putln('} else if (PyTuple_GET_SIZE(%s) > %d) {' % (
2522 Naming.args_cname, max_positional_args))
2523 code.put_goto(argtuple_error_label)
2524 code.putln('} else {')
2525 for i, arg in enumerate(kw_only_args):
2527 pystring_cname = code.intern_identifier(arg.name)
2528 # required keyword-only argument missing
2529 code.put('__Pyx_RaiseKeywordRequired("%s", %s); ' % (
2532 code.putln(code.error_goto(self.pos))
2535 elif min_positional_args == max_positional_args:
2536 # parse the exact number of positional arguments from the
2538 code.putln('} else {')
2539 for i, arg in enumerate(positional_args):
2540 item = "PyTuple_GET_ITEM(%s, %d)" % (Naming.args_cname, i)
2541 self.generate_arg_assignment(arg, item, code)
2542 self.generate_arg_default_assignments(code)
2545 # parse the positional arguments from the variable length
2547 code.putln('} else {')
2548 self.generate_arg_default_assignments(code)
2549 code.putln('switch (PyTuple_GET_SIZE(%s)) {' % Naming.args_cname)
2551 code.putln('default:')
2552 reversed_args = list(enumerate(positional_args))[::-1]
2553 for i, arg in reversed_args:
2554 if i >= min_positional_args-1:
2555 if min_positional_args > 1:
2556 code.putln('case %2d:' % (i+1)) # pure code beautification
2558 code.put('case %2d: ' % (i+1))
2559 item = "PyTuple_GET_ITEM(%s, %d)" % (Naming.args_cname, i)
2560 self.generate_arg_assignment(arg, item, code)
2561 if min_positional_args == 0:
2562 code.put('case 0: ')
2563 code.putln('break;')
2565 if min_positional_args:
2566 for i in range(min_positional_args-1, -1, -1):
2567 code.putln('case %2d:' % i)
2568 code.put_goto(argtuple_error_label)
2570 code.put('default: ')
2571 code.put_goto(argtuple_error_label)
2576 if code.label_used(argtuple_error_label):
2577 code.put_goto(success_label)
2578 code.put_label(argtuple_error_label)
2579 code.put('__Pyx_RaiseArgtupleInvalid("%s", %d, %d, %d, PyTuple_GET_SIZE(%s)); ' % (
2580 self.name, has_fixed_positional_count,
2581 min_positional_args, max_positional_args,
2583 code.putln(code.error_goto(self.pos))
2585 def generate_arg_default_assignments(self, code):
2586 for arg in self.args:
2587 if arg.is_generic and arg.default:
2591 arg.calculate_default_value_code(code)))
2593 def generate_stararg_init_code(self, max_positional_args, code):
2594 if self.starstar_arg:
2595 self.starstar_arg.entry.xdecref_cleanup = 0
2596 code.putln('%s = PyDict_New(); if (unlikely(!%s)) return %s;' % (
2597 self.starstar_arg.entry.cname,
2598 self.starstar_arg.entry.cname,
2599 self.error_value()))
2600 code.put_gotref(self.starstar_arg.entry.cname)
2602 self.star_arg.entry.xdecref_cleanup = 0
2603 code.putln('if (PyTuple_GET_SIZE(%s) > %d) {' % (
2605 max_positional_args))
2606 code.put('%s = PyTuple_GetSlice(%s, %d, PyTuple_GET_SIZE(%s)); ' % (
2607 self.star_arg.entry.cname, Naming.args_cname,
2608 max_positional_args, Naming.args_cname))
2609 code.put_gotref(self.star_arg.entry.cname)
2610 if self.starstar_arg:
2612 code.putln("if (unlikely(!%s)) {" % self.star_arg.entry.cname)
2613 code.put_decref(self.starstar_arg.entry.cname, py_object_type)
2614 code.putln('return %s;' % self.error_value())
2617 code.putln("if (unlikely(!%s)) return %s;" % (
2618 self.star_arg.entry.cname, self.error_value()))
2619 code.putln('} else {')
2620 code.put("%s = %s; " % (self.star_arg.entry.cname, Naming.empty_tuple))
2621 code.put_incref(Naming.empty_tuple, py_object_type)
2624 def generate_keyword_unpacking_code(self, min_positional_args, max_positional_args,
2625 has_fixed_positional_count, positional_args,
2626 kw_only_args, argtuple_error_label, code):
2627 all_args = tuple(positional_args) + tuple(kw_only_args)
2628 max_args = len(all_args)
2630 code.putln("Py_ssize_t kw_args = PyDict_Size(%s);" %
2632 # the 'values' array collects borrowed references to arguments
2633 # before doing any type coercion etc.
2634 code.putln("PyObject* values[%d] = {%s};" % (
2635 max_args, ','.join('0'*max_args)))
2637 # assign borrowed Python default values to the values array,
2638 # so that they can be overwritten by received arguments below
2639 for i, arg in enumerate(all_args):
2640 if arg.default and arg.type.is_pyobject:
2641 default_value = arg.calculate_default_value_code(code)
2642 code.putln('values[%d] = %s;' % (i, arg.type.as_pyobject(default_value)))
2644 # parse the args tuple and check that it's not too long
2645 code.putln('switch (PyTuple_GET_SIZE(%s)) {' % Naming.args_cname)
2647 code.putln('default:')
2648 for i in range(max_positional_args-1, -1, -1):
2649 code.put('case %2d: ' % (i+1))
2650 code.putln("values[%d] = PyTuple_GET_ITEM(%s, %d);" % (
2651 i, Naming.args_cname, i))
2652 code.putln('case 0: break;')
2653 if not self.star_arg:
2654 code.put('default: ') # more arguments than allowed
2655 code.put_goto(argtuple_error_label)
2658 # now fill up the positional/required arguments with values
2660 if self.num_required_args or max_positional_args > 0:
2661 last_required_arg = -1
2662 for i, arg in enumerate(all_args):
2664 last_required_arg = i
2665 if last_required_arg < max_positional_args:
2666 last_required_arg = max_positional_args-1
2667 num_required_args = self.num_required_args
2668 if max_positional_args > 0:
2669 code.putln('switch (PyTuple_GET_SIZE(%s)) {' % Naming.args_cname)
2670 for i, arg in enumerate(all_args[:last_required_arg+1]):
2671 if max_positional_args > 0 and i <= max_positional_args:
2672 if self.star_arg and i == max_positional_args:
2673 code.putln('default:')
2675 code.putln('case %2d:' % i)
2676 pystring_cname = code.intern_identifier(arg.name)
2679 # handled separately below
2681 code.putln('if (kw_args > 0) {')
2682 code.putln('PyObject* value = PyDict_GetItem(%s, %s);' % (
2683 Naming.kwds_cname, pystring_cname))
2684 code.putln('if (value) { values[%d] = value; kw_args--; }' % i)
2687 num_required_args -= 1
2688 code.putln('values[%d] = PyDict_GetItem(%s, %s);' % (
2689 i, Naming.kwds_cname, pystring_cname))
2690 code.putln('if (likely(values[%d])) kw_args--;' % i);
2691 if i < min_positional_args:
2693 # special case: we know arg 0 is missing
2695 code.put_goto(argtuple_error_label)
2697 # print the correct number of values (args or
2698 # kwargs) that were passed into positional
2699 # arguments up to this point
2700 code.putln('else {')
2701 code.put('__Pyx_RaiseArgtupleInvalid("%s", %d, %d, %d, %d); ' % (
2702 self.name, has_fixed_positional_count,
2703 min_positional_args, max_positional_args, i))
2704 code.putln(code.error_goto(self.pos))
2707 code.putln('else {')
2708 code.put('__Pyx_RaiseKeywordRequired("%s", %s); ' %(
2709 self.name, pystring_cname))
2710 code.putln(code.error_goto(self.pos))
2712 if max_positional_args > 0:
2715 if kw_only_args and not self.starstar_arg:
2716 # unpack optional keyword-only arguments
2717 # checking for interned strings in a dict is faster than iterating
2718 # but it's too likely that we must iterate if we expect **kwargs
2720 for i, arg in enumerate(all_args[max_positional_args:]):
2721 if not arg.kw_only or not arg.default:
2723 optional_args.append((i+max_positional_args, arg))
2725 # this mimics an unrolled loop so that we can "break" out of it
2726 code.putln('while (kw_args > 0) {')
2727 code.putln('PyObject* value;')
2728 for i, arg in optional_args:
2729 pystring_cname = code.intern_identifier(arg.name)
2731 'value = PyDict_GetItem(%s, %s);' % (
2732 Naming.kwds_cname, pystring_cname))
2734 'if (value) { values[%d] = value; if (!(--kw_args)) break; }' % i)
2735 code.putln('break;')
2738 code.putln('if (unlikely(kw_args > 0)) {')
2739 # non-positional/-required kw args left in dict: default args,
2740 # kw-only args, **kwargs or error
2742 # This is sort of a catch-all: except for checking required
2743 # arguments, this will always do the right thing for unpacking
2744 # keyword arguments, so that we can concentrate on optimising
2745 # common cases above.
2746 if max_positional_args == 0:
2749 code.putln("const Py_ssize_t used_pos_args = (PyTuple_GET_SIZE(%s) < %d) ? PyTuple_GET_SIZE(%s) : %d;" % (
2750 Naming.args_cname, max_positional_args,
2751 Naming.args_cname, max_positional_args))
2752 pos_arg_count = "used_pos_args"
2754 pos_arg_count = "PyTuple_GET_SIZE(%s)" % Naming.args_cname
2755 code.globalstate.use_utility_code(parse_keywords_utility_code)
2757 'if (unlikely(__Pyx_ParseOptionalKeywords(%s, %s, %s, values, %s, "%s") < 0)) ' % (
2759 Naming.pykwdlist_cname,
2760 self.starstar_arg and self.starstar_arg.entry.cname or '0',
2763 code.putln(code.error_goto(self.pos))
2766 # convert arg values to their final type and assign them
2767 for i, arg in enumerate(all_args):
2768 if arg.default and not arg.type.is_pyobject:
2769 code.putln("if (values[%d]) {" % i)
2770 self.generate_arg_assignment(arg, "values[%d]" % i, code)
2771 if arg.default and not arg.type.is_pyobject:
2772 code.putln('} else {')
2776 arg.calculate_default_value_code(code)))
2779 def generate_argument_conversion_code(self, code):
2780 # Generate code to convert arguments from signature type to
2781 # declared type, if needed. Also copies signature arguments
2782 # into closure fields.
2783 for arg in self.args:
2784 if arg.needs_conversion:
2785 self.generate_arg_conversion(arg, code)
2786 elif arg.entry.in_closure:
2787 code.putln('%s = %s;' % (arg.entry.cname, arg.hdr_cname))
2788 if arg.type.is_pyobject:
2789 code.put_var_incref(arg.entry)
2791 def generate_arg_conversion(self, arg, code):
2792 # Generate conversion code for one argument.
2793 old_type = arg.hdr_type
2795 if old_type.is_pyobject:
2797 code.putln("if (%s) {" % arg.hdr_cname)
2799 code.putln("assert(%s); {" % arg.hdr_cname)
2800 self.generate_arg_conversion_from_pyobject(arg, code)
2802 elif new_type.is_pyobject:
2803 self.generate_arg_conversion_to_pyobject(arg, code)
2805 if new_type.assignable_from(old_type):
2807 "%s = %s;" % (arg.entry.cname, arg.hdr_cname))
2810 "Cannot convert 1 argument from '%s' to '%s'" %
2811 (old_type, new_type))
2813 def generate_arg_conversion_from_pyobject(self, arg, code):
2815 func = new_type.from_py_function
2816 # copied from CoerceFromPyTypeNode
2818 lhs = arg.entry.cname
2819 rhs = "%s(%s)" % (func, arg.hdr_cname)
2820 if new_type.is_enum:
2821 rhs = PyrexTypes.typecast(new_type, PyrexTypes.c_long_type, rhs)
2822 code.putln("%s = %s; %s" % (
2825 code.error_goto_if(new_type.error_condition(arg.entry.cname), arg.pos)))
2828 "Cannot convert Python object argument to type '%s'"
2831 def generate_arg_conversion_to_pyobject(self, arg, code):
2832 old_type = arg.hdr_type
2833 func = old_type.to_py_function
2835 code.putln("%s = %s(%s); %s" % (
2839 code.error_goto_if_null(arg.entry.cname, arg.pos)))
2840 code.put_var_gotref(arg.entry)
2843 "Cannot convert argument of type '%s' to Python object"
2846 def generate_argument_type_tests(self, code):
2847 # Generate type tests for args whose signature
2848 # type is PyObject * and whose declared type is
2849 # a subtype thereof.
2850 for arg in self.args:
2851 if arg.needs_type_test:
2852 self.generate_arg_type_test(arg, code)
2853 elif not arg.accept_none and arg.type.is_pyobject:
2854 self.generate_arg_none_check(arg, code)
2856 def error_value(self):
2857 return self.entry.signature.error_value
2859 def caller_will_check_exceptions(self):
2862 class OverrideCheckNode(StatNode):
2863 # A Node for dispatching to the def method if it
2872 child_attrs = ['body']
2876 def analyse_expressions(self, env):
2877 self.args = env.arg_entries
2878 if self.py_func.is_module_scope:
2883 self.func_node = ExprNodes.RawCNameExprNode(self.pos, py_object_type)
2884 call_tuple = ExprNodes.TupleNode(self.pos, args=[ExprNodes.NameNode(self.pos, name=arg.name) for arg in self.args[first_arg:]])
2885 call_node = ExprNodes.SimpleCallNode(self.pos,
2886 function=self.func_node,
2887 args=[ExprNodes.NameNode(self.pos, name=arg.name) for arg in self.args[first_arg:]])
2888 self.body = ReturnStatNode(self.pos, value=call_node)
2889 self.body.analyse_expressions(env)
2891 def generate_execution_code(self, code):
2892 interned_attr_cname = code.intern_identifier(self.py_func.entry.name)
2893 # Check to see if we are an extension type
2894 if self.py_func.is_module_scope:
2895 self_arg = "((PyObject *)%s)" % Naming.module_cname
2897 self_arg = "((PyObject *)%s)" % self.args[0].cname
2898 code.putln("/* Check if called by wrapper */")
2899 code.putln("if (unlikely(%s)) ;" % Naming.skip_dispatch_cname)
2900 code.putln("/* Check if overriden in Python */")
2901 if self.py_func.is_module_scope:
2902 code.putln("else {")
2904 code.putln("else if (unlikely(Py_TYPE(%s)->tp_dictoffset != 0)) {" % self_arg)
2905 func_node_temp = code.funcstate.allocate_temp(py_object_type, manage_ref=True)
2906 self.func_node.set_cname(func_node_temp)
2907 # need to get attribute manually--scope would return cdef method
2908 err = code.error_goto_if_null(func_node_temp, self.pos)
2909 code.putln("%s = PyObject_GetAttr(%s, %s); %s" % (
2910 func_node_temp, self_arg, interned_attr_cname, err))
2911 code.put_gotref(func_node_temp)
2912 is_builtin_function_or_method = "PyCFunction_Check(%s)" % func_node_temp
2913 is_overridden = "(PyCFunction_GET_FUNCTION(%s) != (void *)&%s)" % (
2914 func_node_temp, self.py_func.entry.func_cname)
2915 code.putln("if (!%s || %s) {" % (is_builtin_function_or_method, is_overridden))
2916 self.body.generate_execution_code(code)
2918 code.put_decref_clear(func_node_temp, PyrexTypes.py_object_type)
2919 code.funcstate.release_temp(func_node_temp)
2922 class ClassDefNode(StatNode, BlockNode):
2925 class PyClassDefNode(ClassDefNode):
2926 # A Python class definition.
2928 # name EncodedString Name of the class
2929 # doc string or None
2930 # body StatNode Attribute definition code
2931 # entry Symtab.Entry
2932 # scope PyClassScope
2933 # decorators [DecoratorNode] list of decorators or None
2935 # The following subnodes are constructed internally:
2937 # dict DictNode Class dictionary
2938 # classobj ClassNode Class object
2939 # target NameNode Variable to assign class object to
2941 child_attrs = ["body", "dict", "classobj", "target"]
2944 def __init__(self, pos, name, bases, doc, body, decorators = None,
2945 keyword_args = None, starstar_arg = None):
2946 StatNode.__init__(self, pos)
2950 self.decorators = decorators
2952 self.dict = ExprNodes.DictNode(pos, key_value_pairs = [])
2953 if self.doc and Options.docstrings:
2954 doc = embed_position(self.pos, self.doc)
2955 # FIXME: correct string node?
2956 doc_node = ExprNodes.StringNode(pos, value = doc)
2959 self.classobj = ExprNodes.ClassNode(pos, name = name,
2960 bases = bases, dict = self.dict, doc = doc_node,
2961 keyword_args = keyword_args, starstar_arg = starstar_arg)
2962 self.target = ExprNodes.NameNode(pos, name = name)
2964 def as_cclass(self):
2966 Return this node as if it were declared as an extension class
2968 bases = self.classobj.bases.args
2970 base_class_name = None
2971 base_class_module = None
2972 elif len(bases) == 1:
2975 from ExprNodes import AttributeNode, NameNode
2976 while isinstance(base, AttributeNode):
2977 path.insert(0, base.attribute)
2979 if isinstance(base, NameNode):
2980 path.insert(0, base.name)
2981 base_class_name = path[-1]
2983 base_class_module = u'.'.join(path[:-1])
2985 base_class_module = None
2987 error(self.classobj.bases.args.pos, "Invalid base class")
2989 error(self.classobj.bases.args.pos, "C class may only have one base class")
2992 return CClassDefNode(self.pos,
2993 visibility = 'private',
2995 class_name = self.name,
2996 base_class_module = base_class_module,
2997 base_class_name = base_class_name,
2998 decorators = self.decorators,
3003 def create_scope(self, env):
3005 while env.is_py_class_scope or env.is_c_class_scope:
3006 env = env.outer_scope
3007 cenv = self.scope = PyClassScope(name = self.name, outer_scope = genv)
3010 def analyse_declarations(self, env):
3011 self.target.analyse_target_declaration(env)
3012 cenv = self.create_scope(env)
3013 cenv.directives = env.directives
3014 cenv.class_obj_cname = self.target.entry.cname
3015 self.body.analyse_declarations(cenv)
3017 def analyse_expressions(self, env):
3018 self.dict.analyse_expressions(env)
3019 self.classobj.analyse_expressions(env)
3020 genv = env.global_scope()
3022 self.body.analyse_expressions(cenv)
3023 self.target.analyse_target_expression(env, self.classobj)
3025 def generate_function_definitions(self, env, code):
3026 self.body.generate_function_definitions(self.scope, code)
3028 def generate_execution_code(self, code):
3029 code.pyclass_stack.append(self)
3031 self.dict.generate_evaluation_code(code)
3032 cenv.namespace_cname = cenv.class_obj_cname = self.dict.result()
3033 self.body.generate_execution_code(code)
3034 self.classobj.generate_evaluation_code(code)
3035 cenv.namespace_cname = cenv.class_obj_cname = self.classobj.result()
3036 self.target.generate_assignment_code(self.classobj, code)
3037 self.dict.generate_disposal_code(code)
3038 self.dict.free_temps(code)
3039 code.pyclass_stack.pop()
3042 class CClassDefNode(ClassDefNode):
3043 # An extension type definition.
3045 # visibility 'private' or 'public' or 'extern'
3046 # typedef_flag boolean
3048 # module_name string or None For import of extern type objects
3049 # class_name string Unqualified name of class
3050 # as_name string or None Name to declare as in this scope
3051 # base_class_module string or None Module containing the base class
3052 # base_class_name string or None Name of the base class
3053 # objstruct_name string or None Specified C name of object struct
3054 # typeobj_name string or None Specified C name of type object
3055 # in_pxd boolean Is in a .pxd file
3056 # decorators [DecoratorNode] list of decorators or None
3057 # doc string or None
3058 # body StatNode or None
3059 # entry Symtab.Entry
3060 # base_type PyExtensionType or None
3061 # buffer_defaults_node DictNode or None Declares defaults for a buffer
3062 # buffer_defaults_pos
3064 child_attrs = ["body"]
3065 buffer_defaults_node = None
3066 buffer_defaults_pos = None
3067 typedef_flag = False
3069 objstruct_name = None
3073 def analyse_declarations(self, env):
3074 #print "CClassDefNode.analyse_declarations:", self.class_name
3075 #print "...visibility =", self.visibility
3076 #print "...module_name =", self.module_name
3079 if self.buffer_defaults_node:
3080 buffer_defaults = Buffer.analyse_buffer_options(self.buffer_defaults_pos,
3081 env, [], self.buffer_defaults_node,
3082 need_complete=False)
3084 buffer_defaults = None
3086 if env.in_cinclude and not self.objstruct_name:
3087 error(self.pos, "Object struct name specification required for "
3088 "C class defined in 'extern from' block")
3089 self.base_type = None
3090 # Now that module imports are cached, we need to
3091 # import the modules for extern classes.
3092 if self.module_name:
3094 for module in env.cimported_modules:
3095 if module.name == self.module_name:
3096 self.module = module
3097 if self.module is None:
3098 self.module = ModuleScope(self.module_name, None, env.context)
3099 self.module.has_extern_class = 1
3100 env.add_imported_module(self.module)
3102 if self.base_class_name:
3103 if self.base_class_module:
3104 base_class_scope = env.find_module(self.base_class_module, self.pos)
3106 base_class_scope = env
3107 if self.base_class_name == 'object':
3108 # extension classes are special and don't need to inherit from object
3109 if base_class_scope is None or base_class_scope.lookup('object') is None:
3110 self.base_class_name = None
3111 self.base_class_module = None
3112 base_class_scope = None
3113 if base_class_scope:
3114 base_class_entry = base_class_scope.find(self.base_class_name, self.pos)
3115 if base_class_entry:
3116 if not base_class_entry.is_type:
3117 error(self.pos, "'%s' is not a type name" % self.base_class_name)
3118 elif not base_class_entry.type.is_extension_type:
3119 error(self.pos, "'%s' is not an extension type" % self.base_class_name)
3120 elif not base_class_entry.type.is_complete():
3121 error(self.pos, "Base class '%s' of type '%s' is incomplete" % (
3122 self.base_class_name, self.class_name))
3123 elif base_class_entry.type.scope and base_class_entry.type.scope.directives and \
3124 base_class_entry.type.scope.directives['final']:
3125 error(self.pos, "Base class '%s' of type '%s' is final" % (
3126 self.base_class_name, self.class_name))
3128 self.base_type = base_class_entry.type
3129 has_body = self.body is not None
3130 if self.module_name and self.visibility != 'extern':
3131 module_path = self.module_name.split(".")
3132 home_scope = env.find_imported_module(module_path, self.pos)
3138 if self.visibility == 'extern':
3139 if self.module_name == '__builtin__' and self.class_name in Builtin.builtin_types:
3140 warning(self.pos, "%s already a builtin Cython type" % self.class_name, 1)
3142 self.entry = home_scope.declare_c_class(
3143 name = self.class_name,
3145 defining = has_body and self.in_pxd,
3146 implementing = has_body and not self.in_pxd,
3147 module_name = self.module_name,
3148 base_type = self.base_type,
3149 objstruct_cname = self.objstruct_name,
3150 typeobj_cname = self.typeobj_name,
3151 visibility = self.visibility,
3152 typedef_flag = self.typedef_flag,
3154 buffer_defaults = buffer_defaults)
3155 if home_scope is not env and self.visibility == 'extern':
3156 env.add_imported_entry(self.class_name, self.entry, pos)
3157 self.scope = scope = self.entry.type.scope
3158 if scope is not None:
3159 scope.directives = env.directives
3161 if self.doc and Options.docstrings:
3162 scope.doc = embed_position(self.pos, self.doc)
3165 self.body.analyse_declarations(scope)
3169 scope.implemented = 1
3170 env.allocate_vtable_names(self.entry)
3172 def analyse_expressions(self, env):
3174 scope = self.entry.type.scope
3175 self.body.analyse_expressions(scope)
3177 def generate_function_definitions(self, env, code):
3179 self.body.generate_function_definitions(
3180 self.entry.type.scope, code)
3182 def generate_execution_code(self, code):
3183 # This is needed to generate evaluation code for
3184 # default values of method arguments.
3186 self.body.generate_execution_code(code)
3188 def annotate(self, code):
3190 self.body.annotate(code)
3193 class PropertyNode(StatNode):
3194 # Definition of a property in an extension type.
3197 # doc EncodedString or None Doc string
3200 child_attrs = ["body"]
3202 def analyse_declarations(self, env):
3203 entry = env.declare_property(self.name, self.doc, self.pos)
3205 entry.scope.directives = env.directives
3206 self.body.analyse_declarations(entry.scope)
3208 def analyse_expressions(self, env):
3209 self.body.analyse_expressions(env)
3211 def generate_function_definitions(self, env, code):
3212 self.body.generate_function_definitions(env, code)
3214 def generate_execution_code(self, code):
3217 def annotate(self, code):
3218 self.body.annotate(code)
3221 class GlobalNode(StatNode):
3222 # Global variable declaration.
3228 def analyse_declarations(self, env):
3229 for name in self.names:
3230 env.declare_global(name, self.pos)
3232 def analyse_expressions(self, env):
3235 def generate_execution_code(self, code):
3239 class ExprStatNode(StatNode):
3240 # Expression used as a statement.
3244 child_attrs = ["expr"]
3246 def analyse_declarations(self, env):
3248 if isinstance(self.expr, ExprNodes.GeneralCallNode):
3249 func = self.expr.function.as_cython_attribute()
3250 if func == u'declare':
3251 args, kwds = self.expr.explicit_args_kwds()
3253 error(self.expr.pos, "Variable names must be specified.")
3254 for var, type_node in kwds.key_value_pairs:
3255 type = type_node.analyse_as_type(env)
3257 error(type_node.pos, "Unknown type")
3259 env.declare_var(var.value, type, var.pos, is_cdef = True)
3260 self.__class__ = PassStatNode
3262 def analyse_expressions(self, env):
3263 self.expr.analyse_expressions(env)
3265 def generate_execution_code(self, code):
3266 self.expr.generate_evaluation_code(code)
3267 if not self.expr.is_temp and self.expr.result():
3268 code.putln("%s;" % self.expr.result())
3269 self.expr.generate_disposal_code(code)
3270 self.expr.free_temps(code)
3272 def generate_function_definitions(self, env, code):
3273 self.expr.generate_function_definitions(env, code)
3275 def annotate(self, code):
3276 self.expr.annotate(code)
3279 class AssignmentNode(StatNode):
3280 # Abstract base class for assignment nodes.
3282 # The analyse_expressions and generate_execution_code
3283 # phases of assignments are split into two sub-phases
3284 # each, to enable all the right hand sides of a
3285 # parallel assignment to be evaluated before assigning
3286 # to any of the left hand sides.
3288 def analyse_expressions(self, env):
3289 self.analyse_types(env)
3291 # def analyse_expressions(self, env):
3292 # self.analyse_expressions_1(env)
3293 # self.analyse_expressions_2(env)
3295 def generate_execution_code(self, code):
3296 self.generate_rhs_evaluation_code(code)
3297 self.generate_assignment_code(code)
3300 class SingleAssignmentNode(AssignmentNode):
3301 # The simplest case:
3305 # lhs ExprNode Left hand side
3306 # rhs ExprNode Right hand side
3307 # first bool Is this guaranteed the first assignment to lhs?
3309 child_attrs = ["lhs", "rhs"]
3311 declaration_only = False
3313 def analyse_declarations(self, env):
3316 # handle declarations of the form x = cython.foo()
3317 if isinstance(self.rhs, ExprNodes.CallNode):
3318 func_name = self.rhs.function.as_cython_attribute()
3320 args, kwds = self.rhs.explicit_args_kwds()
3322 if func_name in ['declare', 'typedef']:
3323 if len(args) > 2 or kwds is not None:
3324 error(rhs.pos, "Can only declare one type at a time.")
3326 type = args[0].analyse_as_type(env)
3328 error(args[0].pos, "Unknown type")
3331 if func_name == 'declare':
3332 if isinstance(lhs, ExprNodes.NameNode):
3333 vars = [(lhs.name, lhs.pos)]
3334 elif isinstance(lhs, ExprNodes.TupleNode):
3335 vars = [(var.name, var.pos) for var in lhs.args]
3337 error(lhs.pos, "Invalid declaration")
3339 for var, pos in vars:
3340 env.declare_var(var, type, pos, is_cdef = True)
3345 self.declaration_only = True
3347 self.declaration_only = True
3348 if not isinstance(lhs, ExprNodes.NameNode):
3349 error(lhs.pos, "Invalid declaration.")
3350 env.declare_typedef(lhs.name, type, self.pos, visibility='private')
3352 elif func_name in ['struct', 'union']:
3353 self.declaration_only = True
3354 if len(args) > 0 or kwds is None:
3355 error(rhs.pos, "Struct or union members must be given by name.")
3358 for member, type_node in kwds.key_value_pairs:
3359 type = type_node.analyse_as_type(env)
3361 error(type_node.pos, "Unknown type")
3363 members.append((member.value, type, member.pos))
3364 if len(members) < len(kwds.key_value_pairs):
3366 if not isinstance(self.lhs, ExprNodes.NameNode):
3367 error(self.lhs.pos, "Invalid declaration.")
3368 name = self.lhs.name
3369 scope = StructOrUnionScope(name)
3370 env.declare_struct_or_union(name, func_name, scope, False, self.rhs.pos)
3371 for member, type, pos in members:
3372 scope.declare_var(member, type, pos)
3374 if self.declaration_only:
3377 self.lhs.analyse_target_declaration(env)
3379 def analyse_types(self, env, use_temp = 0):
3380 self.rhs.analyse_types(env)
3381 self.lhs.analyse_target_types(env)
3382 self.lhs.gil_assignment_check(env)
3383 self.rhs = self.rhs.coerce_to(self.lhs.type, env)
3385 self.rhs = self.rhs.coerce_to_temp(env)
3387 def generate_rhs_evaluation_code(self, code):
3388 self.rhs.generate_evaluation_code(code)
3390 def generate_assignment_code(self, code):
3391 self.lhs.generate_assignment_code(self.rhs, code)
3393 def generate_function_definitions(self, env, code):
3394 self.rhs.generate_function_definitions(env, code)
3396 def annotate(self, code):
3397 self.lhs.annotate(code)
3398 self.rhs.annotate(code)
3401 class CascadedAssignmentNode(AssignmentNode):
3402 # An assignment with multiple left hand sides:
3406 # lhs_list [ExprNode] Left hand sides
3407 # rhs ExprNode Right hand sides
3411 # coerced_rhs_list [ExprNode] RHS coerced to type of each LHS
3413 child_attrs = ["lhs_list", "rhs", "coerced_rhs_list"]
3414 coerced_rhs_list = None
3416 def analyse_declarations(self, env):
3417 for lhs in self.lhs_list:
3418 lhs.analyse_target_declaration(env)
3420 def analyse_types(self, env, use_temp = 0):
3421 self.rhs.analyse_types(env)
3422 if not self.rhs.is_simple():
3424 self.rhs = self.rhs.coerce_to_temp(env)
3426 self.rhs = self.rhs.coerce_to_simple(env)
3427 from ExprNodes import CloneNode
3428 self.coerced_rhs_list = []
3429 for lhs in self.lhs_list:
3430 lhs.analyse_target_types(env)
3431 lhs.gil_assignment_check(env)
3432 rhs = CloneNode(self.rhs)
3433 rhs = rhs.coerce_to(lhs.type, env)
3434 self.coerced_rhs_list.append(rhs)
3436 def generate_rhs_evaluation_code(self, code):
3437 self.rhs.generate_evaluation_code(code)
3439 def generate_assignment_code(self, code):
3440 for i in range(len(self.lhs_list)):
3441 lhs = self.lhs_list[i]
3442 rhs = self.coerced_rhs_list[i]
3443 rhs.generate_evaluation_code(code)
3444 lhs.generate_assignment_code(rhs, code)
3445 # Assignment has disposed of the cloned RHS
3446 self.rhs.generate_disposal_code(code)
3447 self.rhs.free_temps(code)
3449 def generate_function_definitions(self, env, code):
3450 self.rhs.generate_function_definitions(env, code)
3452 def annotate(self, code):
3453 for i in range(len(self.lhs_list)):
3454 lhs = self.lhs_list[i].annotate(code)
3455 rhs = self.coerced_rhs_list[i].annotate(code)
3456 self.rhs.annotate(code)
3459 class ParallelAssignmentNode(AssignmentNode):
3460 # A combined packing/unpacking assignment:
3464 # This has been rearranged by the parser into
3466 # a = d ; b = e ; c = f
3468 # but we must evaluate all the right hand sides
3469 # before assigning to any of the left hand sides.
3471 # stats [AssignmentNode] The constituent assignments
3473 child_attrs = ["stats"]
3475 def analyse_declarations(self, env):
3476 for stat in self.stats:
3477 stat.analyse_declarations(env)
3479 def analyse_expressions(self, env):
3480 for stat in self.stats:
3481 stat.analyse_types(env, use_temp = 1)
3483 # def analyse_expressions(self, env):
3484 # for stat in self.stats:
3485 # stat.analyse_expressions_1(env, use_temp = 1)
3486 # for stat in self.stats:
3487 # stat.analyse_expressions_2(env)
3489 def generate_execution_code(self, code):
3490 for stat in self.stats:
3491 stat.generate_rhs_evaluation_code(code)
3492 for stat in self.stats:
3493 stat.generate_assignment_code(code)
3495 def generate_function_definitions(self, env, code):
3496 for stat in self.stats:
3497 stat.generate_function_definitions(env, code)
3499 def annotate(self, code):
3500 for stat in self.stats:
3504 class InPlaceAssignmentNode(AssignmentNode):
3505 # An in place arithmetic operand:
3511 # lhs ExprNode Left hand side
3512 # rhs ExprNode Right hand side
3513 # op char one of "+-*/%^&|"
3514 # dup (ExprNode) copy of lhs used for operation (auto-generated)
3516 # This code is a bit tricky because in order to obey Python
3517 # semantics the sub-expressions (e.g. indices) of the lhs must
3518 # not be evaluated twice. So we must re-use the values calculated
3519 # in evaluation phase for the assignment phase as well.
3520 # Fortunately, the type of the lhs node is fairly constrained
3521 # (it must be a NameNode, AttributeNode, or IndexNode).
3523 child_attrs = ["lhs", "rhs"]
3525 def analyse_declarations(self, env):
3526 self.lhs.analyse_target_declaration(env)
3528 def analyse_types(self, env):
3529 self.rhs.analyse_types(env)
3530 self.lhs.analyse_target_types(env)
3532 def generate_execution_code(self, code):
3534 self.rhs.generate_evaluation_code(code)
3535 self.lhs.generate_subexpr_evaluation_code(code)
3536 c_op = self.operator
3540 error(self.pos, "No C inplace power operator")
3541 if isinstance(self.lhs, ExprNodes.IndexNode) and self.lhs.is_buffer_access:
3542 if self.lhs.type.is_pyobject:
3543 error(self.pos, "In-place operators not allowed on object buffers in this release.")
3544 if c_op in ('/', '%') and self.lhs.type.is_int and not code.directives['cdivision']:
3545 error(self.pos, "In-place non-c divide operators not allowed on int buffers.")
3546 self.lhs.generate_buffer_setitem_code(self.rhs, code, c_op)
3549 # TODO: make sure overload is declared
3550 code.putln("%s %s= %s;" % (self.lhs.result(), c_op, self.rhs.result()))
3551 self.lhs.generate_subexpr_disposal_code(code)
3552 self.lhs.free_subexpr_temps(code)
3553 self.rhs.generate_disposal_code(code)
3554 self.rhs.free_temps(code)
3556 def annotate(self, code):
3557 self.lhs.annotate(code)
3558 self.rhs.annotate(code)
3560 def create_binop_node(self):
3562 return ExprNodes.binop_node(self.pos, self.operator, self.lhs, self.rhs)
3565 class PrintStatNode(StatNode):
3568 # arg_tuple TupleNode
3569 # stream ExprNode or None (stdout)
3570 # append_newline boolean
3572 child_attrs = ["arg_tuple", "stream"]
3574 def analyse_expressions(self, env):
3576 self.stream.analyse_expressions(env)
3577 self.stream = self.stream.coerce_to_pyobject(env)
3578 self.arg_tuple.analyse_expressions(env)
3579 self.arg_tuple = self.arg_tuple.coerce_to_pyobject(env)
3580 env.use_utility_code(printing_utility_code)
3581 if len(self.arg_tuple.args) == 1 and self.append_newline:
3582 env.use_utility_code(printing_one_utility_code)
3584 nogil_check = Node.gil_error
3585 gil_message = "Python print statement"
3587 def generate_execution_code(self, code):
3589 self.stream.generate_evaluation_code(code)
3590 stream_result = self.stream.py_result()
3593 if len(self.arg_tuple.args) == 1 and self.append_newline:
3594 arg = self.arg_tuple.args[0]
3595 arg.generate_evaluation_code(code)
3598 "if (__Pyx_PrintOne(%s, %s) < 0) %s" % (
3601 code.error_goto(self.pos)))
3602 arg.generate_disposal_code(code)
3603 arg.free_temps(code)
3605 self.arg_tuple.generate_evaluation_code(code)
3607 "if (__Pyx_Print(%s, %s, %d) < 0) %s" % (
3609 self.arg_tuple.py_result(),
3610 self.append_newline,
3611 code.error_goto(self.pos)))
3612 self.arg_tuple.generate_disposal_code(code)
3613 self.arg_tuple.free_temps(code)
3616 self.stream.generate_disposal_code(code)
3617 self.stream.free_temps(code)
3619 def generate_function_definitions(self, env, code):
3621 self.stream.generate_function_definitions(env, code)
3622 self.arg_tuple.generate_function_definitions(env, code)
3624 def annotate(self, code):
3626 self.stream.annotate(code)
3627 self.arg_tuple.annotate(code)
3630 class ExecStatNode(StatNode):
3635 child_attrs = ["args"]
3637 def analyse_expressions(self, env):
3638 for i, arg in enumerate(self.args):
3639 arg.analyse_expressions(env)
3640 arg = arg.coerce_to_pyobject(env)
3642 env.use_utility_code(Builtin.pyexec_utility_code)
3644 nogil_check = Node.gil_error
3645 gil_message = "Python exec statement"
3647 def generate_execution_code(self, code):
3649 for arg in self.args:
3650 arg.generate_evaluation_code(code)
3651 args.append( arg.py_result() )
3652 args = tuple(args + ['0', '0'][:3-len(args)])
3653 temp_result = code.funcstate.allocate_temp(PyrexTypes.py_object_type, manage_ref=True)
3654 code.putln("%s = __Pyx_PyRun(%s, %s, %s);" % (
3655 (temp_result,) + args))
3656 for arg in self.args:
3657 arg.generate_disposal_code(code)
3658 arg.free_temps(code)
3660 code.error_goto_if_null(temp_result, self.pos))
3661 code.put_gotref(temp_result)
3662 code.put_decref_clear(temp_result, py_object_type)
3663 code.funcstate.release_temp(temp_result)
3665 def annotate(self, code):
3666 for arg in self.args:
3670 class DelStatNode(StatNode):
3675 child_attrs = ["args"]
3677 def analyse_declarations(self, env):
3678 for arg in self.args:
3679 arg.analyse_target_declaration(env)
3681 def analyse_expressions(self, env):
3682 for arg in self.args:
3683 arg.analyse_target_expression(env, None)
3684 if arg.type.is_pyobject:
3686 elif arg.type.is_ptr and arg.type.base_type.is_cpp_class:
3688 elif arg.type.is_cpp_class:
3689 error(arg.pos, "Deletion of non-heap C++ object")
3691 error(arg.pos, "Deletion of non-Python, non-C++ object")
3692 #arg.release_target_temp(env)
3694 def nogil_check(self, env):
3695 for arg in self.args:
3696 if arg.type.is_pyobject:
3699 gil_message = "Deleting Python object"
3701 def generate_execution_code(self, code):
3702 for arg in self.args:
3703 if arg.type.is_pyobject:
3704 arg.generate_deletion_code(code)
3705 elif arg.type.is_ptr and arg.type.base_type.is_cpp_class:
3706 arg.generate_result_code(code)
3707 code.putln("delete %s;" % arg.result())
3708 # else error reported earlier
3710 def annotate(self, code):
3711 for arg in self.args:
3715 class PassStatNode(StatNode):
3720 def analyse_expressions(self, env):
3723 def generate_execution_code(self, code):
3727 class BreakStatNode(StatNode):
3731 def analyse_expressions(self, env):
3734 def generate_execution_code(self, code):
3735 if not code.break_label:
3736 error(self.pos, "break statement not inside loop")
3738 code.put_goto(code.break_label)
3741 class ContinueStatNode(StatNode):
3745 def analyse_expressions(self, env):
3748 def generate_execution_code(self, code):
3749 if code.funcstate.in_try_finally:
3750 error(self.pos, "continue statement inside try of try...finally")
3751 elif not code.continue_label:
3752 error(self.pos, "continue statement not inside loop")
3754 code.put_goto(code.continue_label)
3757 class ReturnStatNode(StatNode):
3760 # value ExprNode or None
3761 # return_type PyrexType
3763 child_attrs = ["value"]
3765 def analyse_expressions(self, env):
3766 return_type = env.return_type
3767 self.return_type = return_type
3769 error(self.pos, "Return not inside a function body")
3772 self.value.analyse_types(env)
3773 if return_type.is_void or return_type.is_returncode:
3774 error(self.value.pos,
3775 "Return with value in void function")
3777 self.value = self.value.coerce_to(env.return_type, env)
3779 if (not return_type.is_void
3780 and not return_type.is_pyobject
3781 and not return_type.is_returncode):
3782 error(self.pos, "Return value required")
3784 def nogil_check(self, env):
3785 if self.return_type.is_pyobject:
3788 gil_message = "Returning Python object"
3790 def generate_execution_code(self, code):
3791 code.mark_pos(self.pos)
3792 if not self.return_type:
3793 # error reported earlier
3795 if self.return_type.is_pyobject:
3796 code.put_xdecref(Naming.retval_cname,
3799 self.value.generate_evaluation_code(code)
3800 self.value.make_owned_reference(code)
3803 Naming.retval_cname,
3804 self.value.result_as(self.return_type)))
3805 self.value.generate_post_assignment_code(code)
3806 self.value.free_temps(code)
3808 if self.return_type.is_pyobject:
3809 code.put_init_to_py_none(Naming.retval_cname, self.return_type)
3810 elif self.return_type.is_returncode:
3813 Naming.retval_cname,
3814 self.return_type.default_value))
3815 for cname, type in code.funcstate.temps_holding_reference():
3816 code.put_decref_clear(cname, type)
3817 code.put_goto(code.return_label)
3819 def generate_function_definitions(self, env, code):
3820 if self.value is not None:
3821 self.value.generate_function_definitions(env, code)
3823 def annotate(self, code):
3825 self.value.annotate(code)
3828 class RaiseStatNode(StatNode):
3831 # exc_type ExprNode or None
3832 # exc_value ExprNode or None
3833 # exc_tb ExprNode or None
3835 child_attrs = ["exc_type", "exc_value", "exc_tb"]
3837 def analyse_expressions(self, env):
3839 self.exc_type.analyse_types(env)
3840 self.exc_type = self.exc_type.coerce_to_pyobject(env)
3842 self.exc_value.analyse_types(env)
3843 self.exc_value = self.exc_value.coerce_to_pyobject(env)
3845 self.exc_tb.analyse_types(env)
3846 self.exc_tb = self.exc_tb.coerce_to_pyobject(env)
3847 env.use_utility_code(raise_utility_code)
3849 nogil_check = Node.gil_error
3850 gil_message = "Raising exception"
3852 def generate_execution_code(self, code):
3854 self.exc_type.generate_evaluation_code(code)
3855 type_code = self.exc_type.py_result()
3859 self.exc_value.generate_evaluation_code(code)
3860 value_code = self.exc_value.py_result()
3864 self.exc_tb.generate_evaluation_code(code)
3865 tb_code = self.exc_tb.py_result()
3869 "__Pyx_Raise(%s, %s, %s);" % (
3873 for obj in (self.exc_type, self.exc_value, self.exc_tb):
3875 obj.generate_disposal_code(code)
3876 obj.free_temps(code)
3878 code.error_goto(self.pos))
3880 def generate_function_definitions(self, env, code):
3881 if self.exc_type is not None:
3882 self.exc_type.generate_function_definitions(env, code)
3883 if self.exc_value is not None:
3884 self.exc_value.generate_function_definitions(env, code)
3885 if self.exc_tb is not None:
3886 self.exc_tb.generate_function_definitions(env, code)
3888 def annotate(self, code):
3890 self.exc_type.annotate(code)
3892 self.exc_value.annotate(code)
3894 self.exc_tb.annotate(code)
3897 class ReraiseStatNode(StatNode):
3901 def analyse_expressions(self, env):
3902 env.use_utility_code(restore_exception_utility_code)
3904 nogil_check = Node.gil_error
3905 gil_message = "Raising exception"
3907 def generate_execution_code(self, code):
3908 vars = code.funcstate.exc_vars
3910 for varname in vars:
3911 code.put_giveref(varname)
3912 code.putln("__Pyx_ErrRestore(%s, %s, %s);" % tuple(vars))
3913 for varname in vars:
3914 code.put("%s = 0; " % varname)
3916 code.putln(code.error_goto(self.pos))
3918 error(self.pos, "Reraise not inside except clause")
3921 class AssertStatNode(StatNode):
3925 # value ExprNode or None
3927 child_attrs = ["cond", "value"]
3929 def analyse_expressions(self, env):
3930 self.cond = self.cond.analyse_boolean_expression(env)
3932 self.value.analyse_types(env)
3933 self.value = self.value.coerce_to_pyobject(env)
3935 nogil_check = Node.gil_error
3936 gil_message = "Raising exception"
3938 def generate_execution_code(self, code):
3939 code.putln("#ifndef PYREX_WITHOUT_ASSERTIONS")
3940 self.cond.generate_evaluation_code(code)
3942 "if (unlikely(!%s)) {" %
3945 self.value.generate_evaluation_code(code)
3947 "PyErr_SetObject(PyExc_AssertionError, %s);" %
3948 self.value.py_result())
3949 self.value.generate_disposal_code(code)
3950 self.value.free_temps(code)
3953 "PyErr_SetNone(PyExc_AssertionError);")
3955 code.error_goto(self.pos))
3958 self.cond.generate_disposal_code(code)
3959 self.cond.free_temps(code)
3960 code.putln("#endif")
3962 def generate_function_definitions(self, env, code):
3963 self.cond.generate_function_definitions(env, code)
3964 if self.value is not None:
3965 self.value.generate_function_definitions(env, code)
3967 def annotate(self, code):
3968 self.cond.annotate(code)
3970 self.value.annotate(code)
3973 class IfStatNode(StatNode):
3976 # if_clauses [IfClauseNode]
3977 # else_clause StatNode or None
3979 child_attrs = ["if_clauses", "else_clause"]
3981 def analyse_control_flow(self, env):
3982 env.start_branching(self.pos)
3983 for if_clause in self.if_clauses:
3984 if_clause.analyse_control_flow(env)
3985 env.next_branch(if_clause.end_pos())
3986 if self.else_clause:
3987 self.else_clause.analyse_control_flow(env)
3988 env.finish_branching(self.end_pos())
3990 def analyse_declarations(self, env):
3991 for if_clause in self.if_clauses:
3992 if_clause.analyse_declarations(env)
3993 if self.else_clause:
3994 self.else_clause.analyse_declarations(env)
3996 def analyse_expressions(self, env):
3997 for if_clause in self.if_clauses:
3998 if_clause.analyse_expressions(env)
3999 if self.else_clause:
4000 self.else_clause.analyse_expressions(env)
4002 def generate_execution_code(self, code):
4003 code.mark_pos(self.pos)
4004 end_label = code.new_label()
4005 for if_clause in self.if_clauses:
4006 if_clause.generate_execution_code(code, end_label)
4007 if self.else_clause:
4008 code.putln("/*else*/ {")
4009 self.else_clause.generate_execution_code(code)
4011 code.put_label(end_label)
4013 def generate_function_definitions(self, env, code):
4014 for clause in self.if_clauses:
4015 clause.generate_function_definitions(env, code)
4016 if self.else_clause is not None:
4017 self.else_clause.generate_function_definitions(env, code)
4019 def annotate(self, code):
4020 for if_clause in self.if_clauses:
4021 if_clause.annotate(code)
4022 if self.else_clause:
4023 self.else_clause.annotate(code)
4026 class IfClauseNode(Node):
4027 # if or elif clause in an if statement
4029 # condition ExprNode
4032 child_attrs = ["condition", "body"]
4034 def analyse_control_flow(self, env):
4035 self.body.analyse_control_flow(env)
4037 def analyse_declarations(self, env):
4038 self.body.analyse_declarations(env)
4040 def analyse_expressions(self, env):
4042 self.condition.analyse_temp_boolean_expression(env)
4043 self.body.analyse_expressions(env)
4045 def get_constant_condition_result(self):
4046 if self.condition.has_constant_result():
4047 return bool(self.condition.constant_result)
4051 def generate_execution_code(self, code, end_label):
4052 self.condition.generate_evaluation_code(code)
4055 self.condition.result())
4056 self.condition.generate_disposal_code(code)
4057 self.condition.free_temps(code)
4058 self.body.generate_execution_code(code)
4059 code.put_goto(end_label)
4062 def generate_function_definitions(self, env, code):
4063 self.condition.generate_function_definitions(env, code)
4064 self.body.generate_function_definitions(env, code)
4066 def annotate(self, code):
4067 self.condition.annotate(code)
4068 self.body.annotate(code)
4071 class SwitchCaseNode(StatNode):
4072 # Generated in the optimization of an if-elif-else node
4074 # conditions [ExprNode]
4077 child_attrs = ['conditions', 'body']
4079 def generate_execution_code(self, code):
4080 for cond in self.conditions:
4081 code.mark_pos(cond.pos)
4082 cond.generate_evaluation_code(code)
4083 code.putln("case %s:" % cond.result())
4084 self.body.generate_execution_code(code)
4085 code.putln("break;")
4087 def generate_function_definitions(self, env, code):
4088 for cond in self.conditions:
4089 cond.generate_function_definitions(env, code)
4090 self.body.generate_function_definitions(env, code)
4092 def annotate(self, code):
4093 for cond in self.conditions:
4095 self.body.annotate(code)
4097 class SwitchStatNode(StatNode):
4098 # Generated in the optimization of an if-elif-else node
4101 # cases [SwitchCaseNode]
4102 # else_clause StatNode or None
4104 child_attrs = ['test', 'cases', 'else_clause']
4106 def generate_execution_code(self, code):
4107 self.test.generate_evaluation_code(code)
4108 code.putln("switch (%s) {" % self.test.result())
4109 for case in self.cases:
4110 case.generate_execution_code(code)
4111 if self.else_clause is not None:
4112 code.putln("default:")
4113 self.else_clause.generate_execution_code(code)
4114 code.putln("break;")
4117 def generate_function_definitions(self, env, code):
4118 self.test.generate_function_definitions(env, code)
4119 for case in self.cases:
4120 case.generate_function_definitions(env, code)
4121 if self.else_clause is not None:
4122 self.else_clause.generate_function_definitions(env, code)
4124 def annotate(self, code):
4125 self.test.annotate(code)
4126 for case in self.cases:
4128 if self.else_clause is not None:
4129 self.else_clause.annotate(code)
4131 class LoopNode(object):
4133 def analyse_control_flow(self, env):
4134 env.start_branching(self.pos)
4135 self.body.analyse_control_flow(env)
4136 env.next_branch(self.body.end_pos())
4137 if self.else_clause:
4138 self.else_clause.analyse_control_flow(env)
4139 env.finish_branching(self.end_pos())
4142 class WhileStatNode(LoopNode, StatNode):
4145 # condition ExprNode
4147 # else_clause StatNode
4149 child_attrs = ["condition", "body", "else_clause"]
4151 def analyse_declarations(self, env):
4152 self.body.analyse_declarations(env)
4153 if self.else_clause:
4154 self.else_clause.analyse_declarations(env)
4156 def analyse_expressions(self, env):
4158 self.condition.analyse_temp_boolean_expression(env)
4159 self.body.analyse_expressions(env)
4160 if self.else_clause:
4161 self.else_clause.analyse_expressions(env)
4163 def generate_execution_code(self, code):
4164 old_loop_labels = code.new_loop_labels()
4167 self.condition.generate_evaluation_code(code)
4168 self.condition.generate_disposal_code(code)
4171 self.condition.result())
4172 self.condition.free_temps(code)
4173 self.body.generate_execution_code(code)
4174 code.put_label(code.continue_label)
4176 break_label = code.break_label
4177 code.set_loop_labels(old_loop_labels)
4178 if self.else_clause:
4179 code.putln("/*else*/ {")
4180 self.else_clause.generate_execution_code(code)
4182 code.put_label(break_label)
4184 def generate_function_definitions(self, env, code):
4185 self.condition.generate_function_definitions(env, code)
4186 self.body.generate_function_definitions(env, code)
4187 if self.else_clause is not None:
4188 self.else_clause.generate_function_definitions(env, code)
4190 def annotate(self, code):
4191 self.condition.annotate(code)
4192 self.body.annotate(code)
4193 if self.else_clause:
4194 self.else_clause.annotate(code)
4197 def ForStatNode(pos, **kw):
4198 if 'iterator' in kw:
4199 return ForInStatNode(pos, **kw)
4201 return ForFromStatNode(pos, **kw)
4203 class ForInStatNode(LoopNode, StatNode):
4207 # iterator IteratorNode
4209 # else_clause StatNode
4210 # item NextNode used internally
4212 child_attrs = ["target", "iterator", "body", "else_clause"]
4215 def analyse_declarations(self, env):
4216 self.target.analyse_target_declaration(env)
4217 self.body.analyse_declarations(env)
4218 if self.else_clause:
4219 self.else_clause.analyse_declarations(env)
4221 def analyse_expressions(self, env):
4223 self.target.analyse_target_types(env)
4224 self.iterator.analyse_expressions(env)
4225 self.item = ExprNodes.NextNode(self.iterator, env)
4226 self.item = self.item.coerce_to(self.target.type, env)
4227 self.body.analyse_expressions(env)
4228 if self.else_clause:
4229 self.else_clause.analyse_expressions(env)
4231 def generate_execution_code(self, code):
4232 old_loop_labels = code.new_loop_labels()
4233 self.iterator.allocate_counter_temp(code)
4234 self.iterator.generate_evaluation_code(code)
4237 self.item.generate_evaluation_code(code)
4238 self.target.generate_assignment_code(self.item, code)
4239 self.body.generate_execution_code(code)
4240 code.put_label(code.continue_label)
4243 break_label = code.break_label
4244 code.set_loop_labels(old_loop_labels)
4246 if self.else_clause:
4247 # in nested loops, the 'else' block can contain a
4248 # 'continue' statement for the outer loop, but we may need
4249 # to generate cleanup code before taking that path, so we
4251 orig_continue_label = code.continue_label
4252 code.continue_label = code.new_label('outer_continue')
4254 code.putln("/*else*/ {")
4255 self.else_clause.generate_execution_code(code)
4258 if code.label_used(code.continue_label):
4259 code.put_goto(break_label)
4260 code.put_label(code.continue_label)
4261 self.iterator.generate_disposal_code(code)
4262 code.put_goto(orig_continue_label)
4263 code.set_loop_labels(old_loop_labels)
4265 if code.label_used(break_label):
4266 code.put_label(break_label)
4267 self.iterator.release_counter_temp(code)
4268 self.iterator.generate_disposal_code(code)
4269 self.iterator.free_temps(code)
4271 def generate_function_definitions(self, env, code):
4272 self.target.generate_function_definitions(env, code)
4273 self.iterator.generate_function_definitions(env, code)
4274 self.body.generate_function_definitions(env, code)
4275 if self.else_clause is not None:
4276 self.else_clause.generate_function_definitions(env, code)
4278 def annotate(self, code):
4279 self.target.annotate(code)
4280 self.iterator.annotate(code)
4281 self.body.annotate(code)
4282 if self.else_clause:
4283 self.else_clause.annotate(code)
4284 self.item.annotate(code)
4287 class ForFromStatNode(LoopNode, StatNode):
4288 # for name from expr rel name rel expr
4295 # step ExprNode or None
4297 # else_clause StatNode or None
4303 # loopvar_node ExprNode (usually a NameNode or temp node)
4304 # py_loopvar_node PyTempNode or None
4305 child_attrs = ["target", "bound1", "bound2", "step", "body", "else_clause"]
4307 is_py_target = False
4309 py_loopvar_node = None
4312 gil_message = "For-loop using object bounds or target"
4314 def nogil_check(self, env):
4315 for x in (self.target, self.bound1, self.bound2):
4316 if x.type.is_pyobject:
4319 def analyse_declarations(self, env):
4320 self.target.analyse_target_declaration(env)
4321 self.body.analyse_declarations(env)
4322 if self.else_clause:
4323 self.else_clause.analyse_declarations(env)
4325 def analyse_expressions(self, env):
4327 self.target.analyse_target_types(env)
4328 self.bound1.analyse_types(env)
4329 self.bound2.analyse_types(env)
4330 if self.step is not None:
4331 if isinstance(self.step, ExprNodes.UnaryMinusNode):
4332 warning(self.step.pos, "Probable infinite loop in for-from-by statment. Consider switching the directions of the relations.", 2)
4333 self.step.analyse_types(env)
4335 target_type = self.target.type
4336 if self.target.type.is_numeric:
4337 loop_type = self.target.type
4339 loop_type = PyrexTypes.c_int_type
4340 if not self.bound1.type.is_pyobject:
4341 loop_type = PyrexTypes.widest_numeric_type(loop_type, self.bound1.type)
4342 if not self.bound2.type.is_pyobject:
4343 loop_type = PyrexTypes.widest_numeric_type(loop_type, self.bound2.type)
4344 if self.step is not None and not self.step.type.is_pyobject:
4345 loop_type = PyrexTypes.widest_numeric_type(loop_type, self.step.type)
4346 self.bound1 = self.bound1.coerce_to(loop_type, env)
4347 self.bound2 = self.bound2.coerce_to(loop_type, env)
4348 if not self.bound2.is_literal:
4349 self.bound2 = self.bound2.coerce_to_temp(env)
4350 if self.step is not None:
4351 self.step = self.step.coerce_to(loop_type, env)
4352 if not self.step.is_literal:
4353 self.step = self.step.coerce_to_temp(env)
4355 target_type = self.target.type
4356 if not (target_type.is_pyobject or target_type.is_numeric):
4357 error(self.target.pos,
4358 "for-from loop variable must be c numeric type or Python object")
4359 if target_type.is_numeric:
4360 self.is_py_target = False
4361 if isinstance(self.target, ExprNodes.IndexNode) and self.target.is_buffer_access:
4362 raise error(self.pos, "Buffer indexing not allowed as for loop target.")
4363 self.loopvar_node = self.target
4364 self.py_loopvar_node = None
4366 self.is_py_target = True
4367 c_loopvar_node = ExprNodes.TempNode(self.pos, loop_type, env)
4368 self.loopvar_node = c_loopvar_node
4369 self.py_loopvar_node = \
4370 ExprNodes.CloneNode(c_loopvar_node).coerce_to_pyobject(env)
4371 self.body.analyse_expressions(env)
4372 if self.else_clause:
4373 self.else_clause.analyse_expressions(env)
4375 def generate_execution_code(self, code):
4376 old_loop_labels = code.new_loop_labels()
4377 from_range = self.from_range
4378 self.bound1.generate_evaluation_code(code)
4379 self.bound2.generate_evaluation_code(code)
4380 offset, incop = self.relation_table[self.relation1]
4381 if self.step is not None:
4382 self.step.generate_evaluation_code(code)
4383 step = self.step.result()
4384 incop = "%s=%s" % (incop[0], step)
4386 if isinstance(self.loopvar_node, ExprNodes.TempNode):
4387 self.loopvar_node.allocate(code)
4388 if isinstance(self.py_loopvar_node, ExprNodes.TempNode):
4389 self.py_loopvar_node.allocate(code)
4391 loopvar_name = code.funcstate.allocate_temp(self.target.type, False)
4393 loopvar_name = self.loopvar_node.result()
4395 "for (%s = %s%s; %s %s %s; %s%s) {" % (
4397 self.bound1.result(), offset,
4398 loopvar_name, self.relation2, self.bound2.result(),
4399 loopvar_name, incop))
4400 if self.py_loopvar_node:
4401 self.py_loopvar_node.generate_evaluation_code(code)
4402 self.target.generate_assignment_code(self.py_loopvar_node, code)
4404 code.putln("%s = %s;" % (
4405 self.target.result(), loopvar_name))
4406 self.body.generate_execution_code(code)
4407 code.put_label(code.continue_label)
4408 if self.py_loopvar_node:
4409 # This mess is to make for..from loops with python targets behave
4410 # exactly like those with C targets with regards to re-assignment
4411 # of the loop variable.
4413 if self.target.entry.is_pyglobal:
4414 # We know target is a NameNode, this is the only ugly case.
4415 target_node = ExprNodes.PyTempNode(self.target.pos, None)
4416 target_node.allocate(code)
4417 interned_cname = code.intern_identifier(self.target.entry.name)
4418 code.globalstate.use_utility_code(ExprNodes.get_name_interned_utility_code)
4419 code.putln("%s = __Pyx_GetName(%s, %s); %s" % (
4420 target_node.result(),
4421 Naming.module_cname,
4423 code.error_goto_if_null(target_node.result(), self.target.pos)))
4424 code.put_gotref(target_node.result())
4426 target_node = self.target
4427 from_py_node = ExprNodes.CoerceFromPyTypeNode(self.loopvar_node.type, target_node, None)
4428 from_py_node.temp_code = loopvar_name
4429 from_py_node.generate_result_code(code)
4430 if self.target.entry.is_pyglobal:
4431 code.put_decref(target_node.result(), target_node.type)
4432 target_node.release(code)
4434 if self.py_loopvar_node:
4435 # This is potentially wasteful, but we don't want the semantics to
4436 # depend on whether or not the loop is a python type.
4437 self.py_loopvar_node.generate_evaluation_code(code)
4438 self.target.generate_assignment_code(self.py_loopvar_node, code)
4440 code.funcstate.release_temp(loopvar_name)
4441 break_label = code.break_label
4442 code.set_loop_labels(old_loop_labels)
4443 if self.else_clause:
4444 code.putln("/*else*/ {")
4445 self.else_clause.generate_execution_code(code)
4447 code.put_label(break_label)
4448 self.bound1.generate_disposal_code(code)
4449 self.bound1.free_temps(code)
4450 self.bound2.generate_disposal_code(code)
4451 self.bound2.free_temps(code)
4452 if isinstance(self.loopvar_node, ExprNodes.TempNode):
4453 self.loopvar_node.release(code)
4454 if isinstance(self.py_loopvar_node, ExprNodes.TempNode):
4455 self.py_loopvar_node.release(code)
4456 if self.step is not None:
4457 self.step.generate_disposal_code(code)
4458 self.step.free_temps(code)
4461 # {relop : (initial offset, increment op)}
4468 def generate_function_definitions(self, env, code):
4469 self.target.generate_function_definitions(env, code)
4470 self.bound1.generate_function_definitions(env, code)
4471 self.bound2.generate_function_definitions(env, code)
4472 if self.step is not None:
4473 self.step.generate_function_definitions(env, code)
4474 self.body.generate_function_definitions(env, code)
4475 if self.else_clause is not None:
4476 self.else_clause.generate_function_definitions(env, code)
4478 def annotate(self, code):
4479 self.target.annotate(code)
4480 self.bound1.annotate(code)
4481 self.bound2.annotate(code)
4483 self.step.annotate(code)
4484 self.body.annotate(code)
4485 if self.else_clause:
4486 self.else_clause.annotate(code)
4489 class WithStatNode(StatNode):
4491 Represents a Python with statement.
4493 This is only used at parse tree level; and is not present in
4494 analysis or generation phases.
4496 # manager The with statement manager object
4497 # target Node (lhs expression)
4499 child_attrs = ["manager", "target", "body"]
4501 class TryExceptStatNode(StatNode):
4502 # try .. except statement
4505 # except_clauses [ExceptClauseNode]
4506 # else_clause StatNode or None
4508 child_attrs = ["body", "except_clauses", "else_clause"]
4510 def analyse_control_flow(self, env):
4511 env.start_branching(self.pos)
4512 self.body.analyse_control_flow(env)
4513 successful_try = env.control_flow # grab this for later
4514 env.next_branch(self.body.end_pos())
4515 env.finish_branching(self.body.end_pos())
4517 env.start_branching(self.except_clauses[0].pos)
4518 for except_clause in self.except_clauses:
4519 except_clause.analyse_control_flow(env)
4520 env.next_branch(except_clause.end_pos())
4522 # the else cause it executed only when the try clause finishes
4523 env.control_flow.incoming = successful_try
4524 if self.else_clause:
4525 self.else_clause.analyse_control_flow(env)
4526 env.finish_branching(self.end_pos())
4528 def analyse_declarations(self, env):
4529 self.body.analyse_declarations(env)
4530 for except_clause in self.except_clauses:
4531 except_clause.analyse_declarations(env)
4532 if self.else_clause:
4533 self.else_clause.analyse_declarations(env)
4534 env.use_utility_code(reset_exception_utility_code)
4536 def analyse_expressions(self, env):
4537 self.body.analyse_expressions(env)
4538 default_clause_seen = 0
4539 for except_clause in self.except_clauses:
4540 except_clause.analyse_expressions(env)
4541 if default_clause_seen:
4542 error(except_clause.pos, "default 'except:' must be last")
4543 if not except_clause.pattern:
4544 default_clause_seen = 1
4545 self.has_default_clause = default_clause_seen
4546 if self.else_clause:
4547 self.else_clause.analyse_expressions(env)
4549 nogil_check = Node.gil_error
4550 gil_message = "Try-except statement"
4552 def generate_execution_code(self, code):
4553 old_return_label = code.return_label
4554 old_break_label = code.break_label
4555 old_continue_label = code.continue_label
4556 old_error_label = code.new_error_label()
4557 our_error_label = code.error_label
4558 except_end_label = code.new_label('exception_handled')
4559 except_error_label = code.new_label('except_error')
4560 except_return_label = code.new_label('except_return')
4561 try_return_label = code.new_label('try_return')
4562 try_break_label = code.new_label('try_break')
4563 try_continue_label = code.new_label('try_continue')
4564 try_end_label = code.new_label('try_end')
4567 code.putln("PyObject %s;" %
4568 ', '.join(['*%s' % var for var in Naming.exc_save_vars]))
4569 code.putln("__Pyx_ExceptionSave(%s);" %
4570 ', '.join(['&%s' % var for var in Naming.exc_save_vars]))
4571 for var in Naming.exc_save_vars:
4572 code.put_xgotref(var)
4575 code.return_label = try_return_label
4576 code.break_label = try_break_label
4577 code.continue_label = try_continue_label
4578 self.body.generate_execution_code(code)
4581 temps_to_clean_up = code.funcstate.all_free_managed_temps()
4582 code.error_label = except_error_label
4583 code.return_label = except_return_label
4584 if self.else_clause:
4587 self.else_clause.generate_execution_code(code)
4590 for var in Naming.exc_save_vars:
4591 code.put_xdecref_clear(var, py_object_type)
4592 code.put_goto(try_end_label)
4593 if code.label_used(try_return_label):
4594 code.put_label(try_return_label)
4595 for var in Naming.exc_save_vars: code.put_xgiveref(var)
4596 code.putln("__Pyx_ExceptionReset(%s);" %
4597 ', '.join(Naming.exc_save_vars))
4598 code.put_goto(old_return_label)
4599 code.put_label(our_error_label)
4600 for temp_name, type in temps_to_clean_up:
4601 code.put_xdecref_clear(temp_name, type)
4602 for except_clause in self.except_clauses:
4603 except_clause.generate_handling_code(code, except_end_label)
4605 error_label_used = code.label_used(except_error_label)
4606 if error_label_used or not self.has_default_clause:
4607 if error_label_used:
4608 code.put_label(except_error_label)
4609 for var in Naming.exc_save_vars: code.put_xgiveref(var)
4610 code.putln("__Pyx_ExceptionReset(%s);" %
4611 ', '.join(Naming.exc_save_vars))
4612 code.put_goto(old_error_label)
4614 for exit_label, old_label in zip(
4615 [try_break_label, try_continue_label, except_return_label],
4616 [old_break_label, old_continue_label, old_return_label]):
4618 if code.label_used(exit_label):
4619 code.put_label(exit_label)
4620 for var in Naming.exc_save_vars: code.put_xgiveref(var)
4621 code.putln("__Pyx_ExceptionReset(%s);" %
4622 ', '.join(Naming.exc_save_vars))
4623 code.put_goto(old_label)
4625 if code.label_used(except_end_label):
4626 code.put_label(except_end_label)
4627 for var in Naming.exc_save_vars: code.put_xgiveref(var)
4628 code.putln("__Pyx_ExceptionReset(%s);" %
4629 ', '.join(Naming.exc_save_vars))
4630 code.put_label(try_end_label)
4633 code.return_label = old_return_label
4634 code.break_label = old_break_label
4635 code.continue_label = old_continue_label
4636 code.error_label = old_error_label
4638 def generate_function_definitions(self, env, code):
4639 self.body.generate_function_definitions(env, code)
4640 for except_clause in self.except_clauses:
4641 except_clause.generate_function_definitions(env, code)
4642 if self.else_clause is not None:
4643 self.else_clause.generate_function_definitions(env, code)
4645 def annotate(self, code):
4646 self.body.annotate(code)
4647 for except_node in self.except_clauses:
4648 except_node.annotate(code)
4649 if self.else_clause:
4650 self.else_clause.annotate(code)
4653 class ExceptClauseNode(Node):
4654 # Part of try ... except statement.
4656 # pattern [ExprNode]
4657 # target ExprNode or None
4659 # excinfo_target NameNode or None optional target for exception info
4660 # match_flag string result of exception match
4661 # exc_value ExcValueNode used internally
4662 # function_name string qualified name of enclosing function
4663 # exc_vars (string * 3) local exception variables
4665 # excinfo_target is never set by the parser, but can be set by a transform
4666 # in order to extract more extensive information about the exception as a
4667 # sys.exc_info()-style tuple into a target variable
4669 child_attrs = ["pattern", "target", "body", "exc_value", "excinfo_target"]
4672 excinfo_target = None
4674 def analyse_declarations(self, env):
4676 self.target.analyse_target_declaration(env)
4677 if self.excinfo_target is not None:
4678 self.excinfo_target.analyse_target_declaration(env)
4679 self.body.analyse_declarations(env)
4681 def analyse_expressions(self, env):
4683 genv = env.global_scope()
4684 self.function_name = env.qualified_name
4686 # normalise/unpack self.pattern into a list
4687 for i, pattern in enumerate(self.pattern):
4688 pattern.analyse_expressions(env)
4689 self.pattern[i] = pattern.coerce_to_pyobject(env)
4692 self.exc_value = ExprNodes.ExcValueNode(self.pos, env)
4693 self.target.analyse_target_expression(env, self.exc_value)
4694 if self.excinfo_target is not None:
4696 self.excinfo_tuple = ExprNodes.TupleNode(pos=self.pos, args=[
4697 ExprNodes.ExcValueNode(pos=self.pos, env=env) for x in range(3)])
4698 self.excinfo_tuple.analyse_expressions(env)
4699 self.excinfo_target.analyse_target_expression(env, self.excinfo_tuple)
4701 self.body.analyse_expressions(env)
4703 def generate_handling_code(self, code, end_label):
4704 code.mark_pos(self.pos)
4707 for pattern in self.pattern:
4708 pattern.generate_evaluation_code(code)
4709 exc_tests.append("PyErr_ExceptionMatches(%s)" % pattern.py_result())
4711 match_flag = code.funcstate.allocate_temp(PyrexTypes.c_int_type, False)
4713 "%s = %s;" % (match_flag, ' || '.join(exc_tests)))
4714 for pattern in self.pattern:
4715 pattern.generate_disposal_code(code)
4716 pattern.free_temps(code)
4720 code.funcstate.release_temp(match_flag)
4722 code.putln("/*except:*/ {")
4724 if not getattr(self.body, 'stats', True) and \
4725 self.excinfo_target is None and self.target is None:
4726 # most simple case: no exception variable, empty body (pass)
4727 # => reset the exception state, done
4728 code.putln("PyErr_Restore(0,0,0);")
4729 code.put_goto(end_label)
4733 exc_vars = [code.funcstate.allocate_temp(py_object_type,
4736 code.putln('__Pyx_AddTraceback("%s");' % self.function_name)
4737 # We always have to fetch the exception value even if
4738 # there is no target, because this also normalises the
4739 # exception and stores it in the thread state.
4740 code.globalstate.use_utility_code(get_exception_utility_code)
4741 exc_args = "&%s, &%s, &%s" % tuple(exc_vars)
4742 code.putln("if (__Pyx_GetException(%s) < 0) %s" % (exc_args,
4743 code.error_goto(self.pos)))
4747 self.exc_value.set_var(exc_vars[1])
4748 self.exc_value.generate_evaluation_code(code)
4749 self.target.generate_assignment_code(self.exc_value, code)
4750 if self.excinfo_target is not None:
4751 for tempvar, node in zip(exc_vars, self.excinfo_tuple.args):
4752 node.set_var(tempvar)
4753 self.excinfo_tuple.generate_evaluation_code(code)
4754 self.excinfo_target.generate_assignment_code(self.excinfo_tuple, code)
4756 old_break_label, old_continue_label = code.break_label, code.continue_label
4757 code.break_label = code.new_label('except_break')
4758 code.continue_label = code.new_label('except_continue')
4760 old_exc_vars = code.funcstate.exc_vars
4761 code.funcstate.exc_vars = exc_vars
4762 self.body.generate_execution_code(code)
4763 code.funcstate.exc_vars = old_exc_vars
4764 for var in exc_vars:
4765 code.putln("__Pyx_DECREF(%s); %s = 0;" % (var, var))
4766 code.put_goto(end_label)
4768 if code.label_used(code.break_label):
4769 code.put_label(code.break_label)
4770 for var in exc_vars:
4771 code.putln("__Pyx_DECREF(%s); %s = 0;" % (var, var))
4772 code.put_goto(old_break_label)
4773 code.break_label = old_break_label
4775 if code.label_used(code.continue_label):
4776 code.put_label(code.continue_label)
4777 for var in exc_vars:
4778 code.putln("__Pyx_DECREF(%s); %s = 0;" % (var, var))
4779 code.put_goto(old_continue_label)
4780 code.continue_label = old_continue_label
4782 for temp in exc_vars:
4783 code.funcstate.release_temp(temp)
4788 def generate_function_definitions(self, env, code):
4789 if self.target is not None:
4790 self.target.generate_function_definitions(env, code)
4791 self.body.generate_function_definitions(env, code)
4793 def annotate(self, code):
4795 for pattern in self.pattern:
4796 pattern.annotate(code)
4798 self.target.annotate(code)
4799 self.body.annotate(code)
4802 class TryFinallyStatNode(StatNode):
4803 # try ... finally statement
4806 # finally_clause StatNode
4808 # The plan is that we funnel all continue, break
4809 # return and error gotos into the beginning of the
4810 # finally block, setting a variable to remember which
4811 # one we're doing. At the end of the finally block, we
4812 # switch on the variable to figure out where to go.
4813 # In addition, if we're doing an error, we save the
4814 # exception on entry to the finally block and restore
4817 child_attrs = ["body", "finally_clause"]
4819 preserve_exception = 1
4821 disallow_continue_in_try_finally = 0
4822 # There doesn't seem to be any point in disallowing
4823 # continue in the try block, since we have no problem
4826 def create_analysed(pos, env, body, finally_clause):
4827 node = TryFinallyStatNode(pos, body=body, finally_clause=finally_clause)
4829 create_analysed = staticmethod(create_analysed)
4831 def analyse_control_flow(self, env):
4832 env.start_branching(self.pos)
4833 self.body.analyse_control_flow(env)
4834 env.next_branch(self.body.end_pos())
4835 env.finish_branching(self.body.end_pos())
4836 self.finally_clause.analyse_control_flow(env)
4838 def analyse_declarations(self, env):
4839 self.body.analyse_declarations(env)
4840 self.finally_clause.analyse_declarations(env)
4842 def analyse_expressions(self, env):
4843 self.body.analyse_expressions(env)
4844 self.finally_clause.analyse_expressions(env)
4846 nogil_check = Node.gil_error
4847 gil_message = "Try-finally statement"
4849 def generate_execution_code(self, code):
4850 old_error_label = code.error_label
4851 old_labels = code.all_new_labels()
4852 new_labels = code.get_all_labels()
4853 new_error_label = code.error_label
4854 catch_label = code.new_label()
4857 if self.disallow_continue_in_try_finally:
4858 was_in_try_finally = code.funcstate.in_try_finally
4859 code.funcstate.in_try_finally = 1
4860 self.body.generate_execution_code(code)
4861 if self.disallow_continue_in_try_finally:
4862 code.funcstate.in_try_finally = was_in_try_finally
4865 temps_to_clean_up = code.funcstate.all_free_managed_temps()
4866 code.mark_pos(self.finally_clause.pos)
4870 error_label_used = 0
4871 for i, new_label in enumerate(new_labels):
4872 if new_label in code.labels_used:
4873 cases_used.append(i)
4874 if new_label == new_error_label:
4875 error_label_used = 1
4876 error_label_case = i
4880 if error_label_used and self.preserve_exception:
4882 "PyObject *%s, *%s, *%s;" % Naming.exc_vars)
4884 "int %s;" % Naming.exc_lineno_name)
4885 exc_var_init_zero = ''.join(["%s = 0; " % var for var in Naming.exc_vars])
4886 exc_var_init_zero += '%s = 0;' % Naming.exc_lineno_name
4887 code.putln(exc_var_init_zero)
4889 exc_var_init_zero = None
4890 code.use_label(catch_label)
4892 "__pyx_why = 0; goto %s;" % catch_label)
4893 for i in cases_used:
4894 new_label = new_labels[i]
4895 #if new_label and new_label != "<try>":
4896 if new_label == new_error_label and self.preserve_exception:
4897 self.put_error_catcher(code,
4898 new_error_label, i+1, catch_label, temps_to_clean_up)
4900 code.put('%s: ' % new_label)
4901 if exc_var_init_zero:
4902 code.putln(exc_var_init_zero)
4903 code.putln("__pyx_why = %s; goto %s;" % (
4906 code.put_label(catch_label)
4907 code.set_all_labels(old_labels)
4908 if error_label_used:
4909 code.new_error_label()
4910 finally_error_label = code.error_label
4911 self.finally_clause.generate_execution_code(code)
4912 if error_label_used:
4913 if finally_error_label in code.labels_used and self.preserve_exception:
4914 over_label = code.new_label()
4915 code.put_goto(over_label);
4916 code.put_label(finally_error_label)
4917 code.putln("if (__pyx_why == %d) {" % (error_label_case + 1))
4918 for var in Naming.exc_vars:
4919 code.putln("Py_XDECREF(%s);" % var)
4921 code.put_goto(old_error_label)
4922 code.put_label(over_label)
4923 code.error_label = old_error_label
4926 "switch (__pyx_why) {")
4927 for i in cases_used:
4928 old_label = old_labels[i]
4929 if old_label == old_error_label and self.preserve_exception:
4930 self.put_error_uncatcher(code, i+1, old_error_label)
4932 code.use_label(old_label)
4934 "case %s: goto %s;" % (
4942 def generate_function_definitions(self, env, code):
4943 self.body.generate_function_definitions(env, code)
4944 self.finally_clause.generate_function_definitions(env, code)
4946 def put_error_catcher(self, code, error_label, i, catch_label, temps_to_clean_up):
4947 code.globalstate.use_utility_code(restore_exception_utility_code)
4954 for temp_name, type in temps_to_clean_up:
4955 code.put_xdecref_clear(temp_name, type)
4957 "__Pyx_ErrFetch(&%s, &%s, &%s);" %
4961 Naming.exc_lineno_name, Naming.lineno_cname))
4962 code.put_goto(catch_label)
4965 def put_error_uncatcher(self, code, i, error_label):
4966 code.globalstate.use_utility_code(restore_exception_utility_code)
4971 "__Pyx_ErrRestore(%s, %s, %s);" %
4975 Naming.lineno_cname, Naming.exc_lineno_name))
4976 for var in Naming.exc_vars:
4980 code.put_goto(error_label)
4984 def annotate(self, code):
4985 self.body.annotate(code)
4986 self.finally_clause.annotate(code)
4989 class GILStatNode(TryFinallyStatNode):
4990 # 'with gil' or 'with nogil' statement
4992 # state string 'gil' or 'nogil'
4996 preserve_exception = 0
4998 def __init__(self, pos, state, body):
5000 TryFinallyStatNode.__init__(self, pos,
5002 finally_clause = GILExitNode(pos, state = state))
5004 def analyse_expressions(self, env):
5005 env.use_utility_code(force_init_threads_utility_code)
5006 was_nogil = env.nogil
5008 TryFinallyStatNode.analyse_expressions(self, env)
5009 env.nogil = was_nogil
5013 def generate_execution_code(self, code):
5014 code.mark_pos(self.pos)
5016 if self.state == 'gil':
5017 code.putln("#ifdef WITH_THREAD")
5018 code.putln("PyGILState_STATE _save = PyGILState_Ensure();")
5019 code.putln("#endif")
5021 code.putln("#ifdef WITH_THREAD")
5022 code.putln("PyThreadState *_save;")
5023 code.putln("#endif")
5024 code.putln("Py_UNBLOCK_THREADS")
5025 TryFinallyStatNode.generate_execution_code(self, code)
5029 class GILExitNode(StatNode):
5030 # Used as the 'finally' block in a GILStatNode
5032 # state string 'gil' or 'nogil'
5036 def analyse_expressions(self, env):
5039 def generate_execution_code(self, code):
5040 if self.state == 'gil':
5041 code.putln("#ifdef WITH_THREAD")
5042 code.putln("PyGILState_Release(_save);")
5043 code.putln("#endif")
5045 code.putln("Py_BLOCK_THREADS")
5048 class CImportStatNode(StatNode):
5051 # module_name string Qualified name of module being imported
5052 # as_name string or None Name specified in "as" clause, if any
5056 def analyse_declarations(self, env):
5057 if not env.is_module_scope:
5058 error(self.pos, "cimport only allowed at module level")
5060 module_scope = env.find_module(self.module_name, self.pos)
5061 if "." in self.module_name:
5062 names = [EncodedString(name) for name in self.module_name.split(".")]
5064 top_module_scope = env.context.find_submodule(top_name)
5065 module_scope = top_module_scope
5066 for name in names[1:]:
5067 submodule_scope = module_scope.find_submodule(name)
5068 module_scope.declare_module(name, submodule_scope, self.pos)
5069 module_scope = submodule_scope
5071 env.declare_module(self.as_name, module_scope, self.pos)
5073 env.declare_module(top_name, top_module_scope, self.pos)
5075 name = self.as_name or self.module_name
5076 env.declare_module(name, module_scope, self.pos)
5078 def analyse_expressions(self, env):
5081 def generate_execution_code(self, code):
5085 class FromCImportStatNode(StatNode):
5086 # from ... cimport statement
5088 # module_name string Qualified name of module
5089 # imported_names [(pos, name, as_name, kind)] Names to be imported
5093 def analyse_declarations(self, env):
5094 if not env.is_module_scope:
5095 error(self.pos, "cimport only allowed at module level")
5097 module_scope = env.find_module(self.module_name, self.pos)
5098 env.add_imported_module(module_scope)
5099 for pos, name, as_name, kind in self.imported_names:
5101 for local_name, entry in module_scope.entries.items():
5102 env.add_imported_entry(local_name, entry, pos)
5104 entry = module_scope.lookup(name)
5106 if kind and not self.declaration_matches(entry, kind):
5107 entry.redeclared(pos)
5109 if kind == 'struct' or kind == 'union':
5110 entry = module_scope.declare_struct_or_union(name,
5111 kind = kind, scope = None, typedef_flag = 0, pos = pos)
5112 elif kind == 'class':
5113 entry = module_scope.declare_c_class(name, pos = pos,
5114 module_name = self.module_name)
5116 submodule_scope = env.context.find_module(name, relative_to = module_scope, pos = self.pos)
5117 if submodule_scope.parent_module is module_scope:
5118 env.declare_module(as_name or name, submodule_scope, self.pos)
5120 error(pos, "Name '%s' not declared in module '%s'"
5121 % (name, self.module_name))
5124 local_name = as_name or name
5125 env.add_imported_entry(local_name, entry, pos)
5127 def declaration_matches(self, entry, kind):
5128 if not entry.is_type:
5132 if not type.is_extension_type:
5135 if not type.is_struct_or_union:
5137 if kind != type.kind:
5141 def analyse_expressions(self, env):
5144 def generate_execution_code(self, code):
5148 class FromImportStatNode(StatNode):
5149 # from ... import statement
5152 # items [(string, NameNode)]
5153 # interned_items [(string, NameNode, ExprNode)]
5154 # item PyTempNode used internally
5155 # import_star boolean used internally
5157 child_attrs = ["module"]
5160 def analyse_declarations(self, env):
5161 for name, target in self.items:
5163 if not env.is_module_scope:
5164 error(self.pos, "import * only allowed at module level")
5166 env.has_import_star = 1
5167 self.import_star = 1
5169 target.analyse_target_declaration(env)
5171 def analyse_expressions(self, env):
5173 self.module.analyse_expressions(env)
5174 self.item = ExprNodes.RawCNameExprNode(self.pos, py_object_type)
5175 self.interned_items = []
5176 for name, target in self.items:
5178 for _, entry in env.entries.items():
5179 if not entry.is_type and entry.type.is_extension_type:
5180 env.use_utility_code(ExprNodes.type_test_utility_code)
5183 entry = env.lookup(target.name)
5184 # check whether or not entry is already cimported
5185 if (entry.is_type and entry.type.name == name
5186 and hasattr(entry.type, 'module_name')):
5187 if entry.type.module_name == self.module.module_name.value:
5188 # cimported with absolute name
5191 # cimported with relative name
5192 module = env.find_module(self.module.module_name.value,
5194 if entry.type.module_name == module.qualified_name:
5196 except AttributeError:
5198 target.analyse_target_expression(env, None)
5199 if target.type is py_object_type:
5202 coerced_item = self.item.coerce_to(target.type, env)
5203 self.interned_items.append((name, target, coerced_item))
5205 def generate_execution_code(self, code):
5206 self.module.generate_evaluation_code(code)
5207 if self.import_star:
5209 'if (%s(%s) < 0) %s;' % (
5211 self.module.py_result(),
5212 code.error_goto(self.pos)))
5213 item_temp = code.funcstate.allocate_temp(py_object_type, manage_ref=True)
5214 self.item.set_cname(item_temp)
5215 for name, target, coerced_item in self.interned_items:
5216 cname = code.intern_identifier(name)
5218 '%s = PyObject_GetAttr(%s, %s); %s' % (
5220 self.module.py_result(),
5222 code.error_goto_if_null(item_temp, self.pos)))
5223 code.put_gotref(item_temp)
5224 if coerced_item is None:
5225 target.generate_assignment_code(self.item, code)
5227 coerced_item.allocate_temp_result(code)
5228 coerced_item.generate_result_code(code)
5229 target.generate_assignment_code(coerced_item, code)
5230 code.put_decref_clear(item_temp, py_object_type)
5231 code.funcstate.release_temp(item_temp)
5232 self.module.generate_disposal_code(code)
5233 self.module.free_temps(code)
5237 #------------------------------------------------------------------------------------
5239 # Runtime support code
5241 #------------------------------------------------------------------------------------
5243 utility_function_predeclarations = \
5245 /* inline attribute */
5246 #ifndef CYTHON_INLINE
5247 #if defined(__GNUC__)
5248 #define CYTHON_INLINE __inline__
5249 #elif defined(_MSC_VER)
5250 #define CYTHON_INLINE __inline
5251 #elif defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
5252 #define CYTHON_INLINE inline
5254 #define CYTHON_INLINE
5258 /* unused attribute */
5259 #ifndef CYTHON_UNUSED
5260 # if defined(__GNUC__)
5261 # if !(defined(__cplusplus)) || (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
5262 # define CYTHON_UNUSED __attribute__ ((__unused__))
5264 # define CYTHON_UNUSED
5266 # elif defined(__ICC) || defined(__INTEL_COMPILER)
5267 # define CYTHON_UNUSED __attribute__ ((__unused__))
5269 # define CYTHON_UNUSED
5273 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*/
5277 if Options.gcc_branch_hints:
5278 branch_prediction_macros = \
5281 /* Test for GCC > 2.95 */
5282 #if __GNUC__ > 2 || (__GNUC__ == 2 && (__GNUC_MINOR__ > 95))
5283 #define likely(x) __builtin_expect(!!(x), 1)
5284 #define unlikely(x) __builtin_expect(!!(x), 0)
5285 #else /* __GNUC__ > 2 ... */
5286 #define likely(x) (x)
5287 #define unlikely(x) (x)
5288 #endif /* __GNUC__ > 2 ... */
5289 #else /* __GNUC__ */
5290 #define likely(x) (x)
5291 #define unlikely(x) (x)
5292 #endif /* __GNUC__ */
5295 branch_prediction_macros = \
5297 #define likely(x) (x)
5298 #define unlikely(x) (x)
5301 #get_name_predeclaration = \
5302 #"static PyObject *__Pyx_GetName(PyObject *dict, char *name); /*proto*/"
5304 #get_name_interned_predeclaration = \
5305 #"static PyObject *__Pyx_GetName(PyObject *dict, PyObject *name); /*proto*/"
5307 #------------------------------------------------------------------------------------
5309 printing_utility_code = UtilityCode(
5311 static int __Pyx_Print(PyObject*, PyObject *, int); /*proto*/
5312 #if PY_MAJOR_VERSION >= 3
5313 static PyObject* %s = 0;
5314 static PyObject* %s = 0;
5316 """ % (Naming.print_function, Naming.print_function_kwargs),
5318 #if PY_MAJOR_VERSION >= 3
5322 """ % (Naming.print_function, Naming.print_function_kwargs),
5324 #if PY_MAJOR_VERSION < 3
5325 static PyObject *__Pyx_GetStdout(void) {
5326 PyObject *f = PySys_GetObject((char *)"stdout");
5328 PyErr_SetString(PyExc_RuntimeError, "lost sys.stdout");
5333 static int __Pyx_Print(PyObject* f, PyObject *arg_tuple, int newline) {
5338 if (!(f = __Pyx_GetStdout()))
5341 for (i=0; i < PyTuple_GET_SIZE(arg_tuple); i++) {
5342 if (PyFile_SoftSpace(f, 1)) {
5343 if (PyFile_WriteString(" ", f) < 0)
5346 v = PyTuple_GET_ITEM(arg_tuple, i);
5347 if (PyFile_WriteObject(v, f, Py_PRINT_RAW) < 0)
5349 if (PyString_Check(v)) {
5350 char *s = PyString_AsString(v);
5351 Py_ssize_t len = PyString_Size(v);
5353 isspace(Py_CHARMASK(s[len-1])) &&
5355 PyFile_SoftSpace(f, 0);
5359 if (PyFile_WriteString("\n", f) < 0)
5361 PyFile_SoftSpace(f, 0);
5366 #else /* Python 3 has a print function */
5368 static int __Pyx_Print(PyObject* stream, PyObject *arg_tuple, int newline) {
5369 PyObject* kwargs = 0;
5370 PyObject* result = 0;
5371 PyObject* end_string;
5372 if (unlikely(!%(PRINT_FUNCTION)s)) {
5373 %(PRINT_FUNCTION)s = __Pyx_GetAttrString(%(BUILTINS)s, "print");
5374 if (!%(PRINT_FUNCTION)s)
5378 kwargs = PyDict_New();
5379 if (unlikely(!kwargs))
5381 if (unlikely(PyDict_SetItemString(kwargs, "file", stream) < 0))
5384 end_string = PyUnicode_FromStringAndSize(" ", 1);
5385 if (unlikely(!end_string))
5387 if (PyDict_SetItemString(kwargs, "end", end_string) < 0) {
5388 Py_DECREF(end_string);
5391 Py_DECREF(end_string);
5393 } else if (!newline) {
5394 if (unlikely(!%(PRINT_KWARGS)s)) {
5395 %(PRINT_KWARGS)s = PyDict_New();
5396 if (unlikely(!%(PRINT_KWARGS)s))
5398 end_string = PyUnicode_FromStringAndSize(" ", 1);
5399 if (unlikely(!end_string))
5401 if (PyDict_SetItemString(%(PRINT_KWARGS)s, "end", end_string) < 0) {
5402 Py_DECREF(end_string);
5405 Py_DECREF(end_string);
5407 kwargs = %(PRINT_KWARGS)s;
5409 result = PyObject_Call(%(PRINT_FUNCTION)s, arg_tuple, kwargs);
5410 if (unlikely(kwargs) && (kwargs != %(PRINT_KWARGS)s))
5417 if (kwargs != %(PRINT_KWARGS)s)
5423 """ % {'BUILTINS' : Naming.builtins_cname,
5424 'PRINT_FUNCTION' : Naming.print_function,
5425 'PRINT_KWARGS' : Naming.print_function_kwargs}
5429 printing_one_utility_code = UtilityCode(
5431 static int __Pyx_PrintOne(PyObject* stream, PyObject *o); /*proto*/
5434 #if PY_MAJOR_VERSION < 3
5436 static int __Pyx_PrintOne(PyObject* f, PyObject *o) {
5438 if (!(f = __Pyx_GetStdout()))
5441 if (PyFile_SoftSpace(f, 0)) {
5442 if (PyFile_WriteString(" ", f) < 0)
5445 if (PyFile_WriteObject(o, f, Py_PRINT_RAW) < 0)
5447 if (PyFile_WriteString("\n", f) < 0)
5450 /* the line below is just to avoid compiler
5451 * compiler warnings about unused functions */
5452 return __Pyx_Print(f, NULL, 0);
5455 #else /* Python 3 has a print function */
5457 static int __Pyx_PrintOne(PyObject* stream, PyObject *o) {
5459 PyObject* arg_tuple = PyTuple_New(1);
5460 if (unlikely(!arg_tuple))
5463 PyTuple_SET_ITEM(arg_tuple, 0, o);
5464 res = __Pyx_Print(stream, arg_tuple, 1);
5465 Py_DECREF(arg_tuple);
5471 requires=[printing_utility_code])
5475 #------------------------------------------------------------------------------------
5477 # Exception raising code
5479 # Exceptions are raised by __Pyx_Raise() and stored as plain
5480 # type/value/tb in PyThreadState->curexc_*. When being caught by an
5481 # 'except' statement, curexc_* is moved over to exc_* by
5482 # __Pyx_GetException()
5484 restore_exception_utility_code = UtilityCode(
5486 static CYTHON_INLINE void __Pyx_ErrRestore(PyObject *type, PyObject *value, PyObject *tb); /*proto*/
5487 static CYTHON_INLINE void __Pyx_ErrFetch(PyObject **type, PyObject **value, PyObject **tb); /*proto*/
5490 static CYTHON_INLINE void __Pyx_ErrRestore(PyObject *type, PyObject *value, PyObject *tb) {
5491 PyObject *tmp_type, *tmp_value, *tmp_tb;
5492 PyThreadState *tstate = PyThreadState_GET();
5494 tmp_type = tstate->curexc_type;
5495 tmp_value = tstate->curexc_value;
5496 tmp_tb = tstate->curexc_traceback;
5497 tstate->curexc_type = type;
5498 tstate->curexc_value = value;
5499 tstate->curexc_traceback = tb;
5500 Py_XDECREF(tmp_type);
5501 Py_XDECREF(tmp_value);
5505 static CYTHON_INLINE void __Pyx_ErrFetch(PyObject **type, PyObject **value, PyObject **tb) {
5506 PyThreadState *tstate = PyThreadState_GET();
5507 *type = tstate->curexc_type;
5508 *value = tstate->curexc_value;
5509 *tb = tstate->curexc_traceback;
5511 tstate->curexc_type = 0;
5512 tstate->curexc_value = 0;
5513 tstate->curexc_traceback = 0;
5518 # The following function is based on do_raise() from ceval.c. There
5519 # are separate versions for Python2 and Python3 as exception handling
5520 # has changed quite a lot between the two versions.
5522 raise_utility_code = UtilityCode(
5524 static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb); /*proto*/
5527 #if PY_MAJOR_VERSION < 3
5528 static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb) {
5532 /* First, check the traceback argument, replacing None with NULL. */
5533 if (tb == Py_None) {
5537 else if (tb != NULL && !PyTraceBack_Check(tb)) {
5538 PyErr_SetString(PyExc_TypeError,
5539 "raise: arg 3 must be a traceback or None");
5542 /* Next, replace a missing value with None */
5543 if (value == NULL) {
5547 #if PY_VERSION_HEX < 0x02050000
5548 if (!PyClass_Check(type))
5550 if (!PyType_Check(type))
5553 /* Raising an instance. The value should be a dummy. */
5554 if (value != Py_None) {
5555 PyErr_SetString(PyExc_TypeError,
5556 "instance exception may not have a separate value");
5559 /* Normalize to raise <class>, <instance> */
5562 #if PY_VERSION_HEX < 0x02050000
5563 if (PyInstance_Check(type)) {
5564 type = (PyObject*) ((PyInstanceObject*)type)->in_class;
5569 PyErr_SetString(PyExc_TypeError,
5570 "raise: exception must be an old-style class or instance");
5574 type = (PyObject*) Py_TYPE(type);
5576 if (!PyType_IsSubtype((PyTypeObject *)type, (PyTypeObject *)PyExc_BaseException)) {
5577 PyErr_SetString(PyExc_TypeError,
5578 "raise: exception class must be a subclass of BaseException");
5584 __Pyx_ErrRestore(type, value, tb);
5593 #else /* Python 3+ */
5595 static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb) {
5596 if (tb == Py_None) {
5598 } else if (tb && !PyTraceBack_Check(tb)) {
5599 PyErr_SetString(PyExc_TypeError,
5600 "raise: arg 3 must be a traceback or None");
5603 if (value == Py_None)
5606 if (PyExceptionInstance_Check(type)) {
5608 PyErr_SetString(PyExc_TypeError,
5609 "instance exception may not have a separate value");
5613 type = (PyObject*) Py_TYPE(value);
5614 } else if (!PyExceptionClass_Check(type)) {
5615 PyErr_SetString(PyExc_TypeError,
5616 "raise: exception class must be a subclass of BaseException");
5620 PyErr_SetObject(type, value);
5623 PyThreadState *tstate = PyThreadState_GET();
5624 PyObject* tmp_tb = tstate->curexc_traceback;
5627 tstate->curexc_traceback = tb;
5637 requires=[restore_exception_utility_code])
5639 #------------------------------------------------------------------------------------
5641 get_exception_utility_code = UtilityCode(
5643 static int __Pyx_GetException(PyObject **type, PyObject **value, PyObject **tb); /*proto*/
5646 static int __Pyx_GetException(PyObject **type, PyObject **value, PyObject **tb) {
5647 PyObject *local_type, *local_value, *local_tb;
5648 PyObject *tmp_type, *tmp_value, *tmp_tb;
5649 PyThreadState *tstate = PyThreadState_GET();
5650 local_type = tstate->curexc_type;
5651 local_value = tstate->curexc_value;
5652 local_tb = tstate->curexc_traceback;
5653 tstate->curexc_type = 0;
5654 tstate->curexc_value = 0;
5655 tstate->curexc_traceback = 0;
5656 PyErr_NormalizeException(&local_type, &local_value, &local_tb);
5657 if (unlikely(tstate->curexc_type))
5659 #if PY_MAJOR_VERSION >= 3
5660 if (unlikely(PyException_SetTraceback(local_value, local_tb) < 0))
5664 *value = local_value;
5666 Py_INCREF(local_type);
5667 Py_INCREF(local_value);
5668 Py_INCREF(local_tb);
5669 tmp_type = tstate->exc_type;
5670 tmp_value = tstate->exc_value;
5671 tmp_tb = tstate->exc_traceback;
5672 tstate->exc_type = local_type;
5673 tstate->exc_value = local_value;
5674 tstate->exc_traceback = local_tb;
5675 /* Make sure tstate is in a consistent state when we XDECREF
5676 these objects (XDECREF may run arbitrary code). */
5677 Py_XDECREF(tmp_type);
5678 Py_XDECREF(tmp_value);
5685 Py_XDECREF(local_type);
5686 Py_XDECREF(local_value);
5687 Py_XDECREF(local_tb);
5693 #------------------------------------------------------------------------------------
5695 get_exception_tuple_utility_code = UtilityCode(proto="""
5696 static PyObject *__Pyx_GetExceptionTuple(void); /*proto*/
5698 # I doubt that calling __Pyx_GetException() here is correct as it moves
5699 # the exception from tstate->curexc_* to tstate->exc_*, which prevents
5700 # exception handlers later on from receiving it.
5702 static PyObject *__Pyx_GetExceptionTuple(void) {
5703 PyObject *type = NULL, *value = NULL, *tb = NULL;
5704 if (__Pyx_GetException(&type, &value, &tb) == 0) {
5705 PyObject* exc_info = PyTuple_New(3);
5710 PyTuple_SET_ITEM(exc_info, 0, type);
5711 PyTuple_SET_ITEM(exc_info, 1, value);
5712 PyTuple_SET_ITEM(exc_info, 2, tb);
5719 requires=[get_exception_utility_code])
5721 #------------------------------------------------------------------------------------
5723 reset_exception_utility_code = UtilityCode(
5725 static CYTHON_INLINE void __Pyx_ExceptionSave(PyObject **type, PyObject **value, PyObject **tb); /*proto*/
5726 static void __Pyx_ExceptionReset(PyObject *type, PyObject *value, PyObject *tb); /*proto*/
5729 static CYTHON_INLINE void __Pyx_ExceptionSave(PyObject **type, PyObject **value, PyObject **tb) {
5730 PyThreadState *tstate = PyThreadState_GET();
5731 *type = tstate->exc_type;
5732 *value = tstate->exc_value;
5733 *tb = tstate->exc_traceback;
5739 static void __Pyx_ExceptionReset(PyObject *type, PyObject *value, PyObject *tb) {
5740 PyObject *tmp_type, *tmp_value, *tmp_tb;
5741 PyThreadState *tstate = PyThreadState_GET();
5742 tmp_type = tstate->exc_type;
5743 tmp_value = tstate->exc_value;
5744 tmp_tb = tstate->exc_traceback;
5745 tstate->exc_type = type;
5746 tstate->exc_value = value;
5747 tstate->exc_traceback = tb;
5748 Py_XDECREF(tmp_type);
5749 Py_XDECREF(tmp_value);
5754 #------------------------------------------------------------------------------------
5756 arg_type_test_utility_code = UtilityCode(
5758 static int __Pyx_ArgTypeTest(PyObject *obj, PyTypeObject *type, int none_allowed,
5759 const char *name, int exact); /*proto*/
5762 static int __Pyx_ArgTypeTest(PyObject *obj, PyTypeObject *type, int none_allowed,
5763 const char *name, int exact)
5766 PyErr_Format(PyExc_SystemError, "Missing type object");
5769 if (none_allowed && obj == Py_None) return 1;
5771 if (Py_TYPE(obj) == type) return 1;
5774 if (PyObject_TypeCheck(obj, type)) return 1;
5776 PyErr_Format(PyExc_TypeError,
5777 "Argument '%s' has incorrect type (expected %s, got %s)",
5778 name, type->tp_name, Py_TYPE(obj)->tp_name);
5783 #------------------------------------------------------------------------------------
5785 # __Pyx_RaiseArgtupleInvalid raises the correct exception when too
5786 # many or too few positional arguments were found. This handles
5787 # Py_ssize_t formatting correctly.
5789 raise_argtuple_invalid_utility_code = UtilityCode(
5791 static void __Pyx_RaiseArgtupleInvalid(const char* func_name, int exact,
5792 Py_ssize_t num_min, Py_ssize_t num_max, Py_ssize_t num_found); /*proto*/
5795 static void __Pyx_RaiseArgtupleInvalid(
5796 const char* func_name,
5800 Py_ssize_t num_found)
5802 Py_ssize_t num_expected;
5803 const char *number, *more_or_less;
5805 if (num_found < num_min) {
5806 num_expected = num_min;
5807 more_or_less = "at least";
5809 num_expected = num_max;
5810 more_or_less = "at most";
5813 more_or_less = "exactly";
5815 number = (num_expected == 1) ? "" : "s";
5816 PyErr_Format(PyExc_TypeError,
5817 #if PY_VERSION_HEX < 0x02050000
5818 "%s() takes %s %d positional argument%s (%d given)",
5820 "%s() takes %s %zd positional argument%s (%zd given)",
5822 func_name, more_or_less, num_expected, number, num_found);
5826 raise_keyword_required_utility_code = UtilityCode(
5828 static CYTHON_INLINE void __Pyx_RaiseKeywordRequired(const char* func_name, PyObject* kw_name); /*proto*/
5831 static CYTHON_INLINE void __Pyx_RaiseKeywordRequired(
5832 const char* func_name,
5835 PyErr_Format(PyExc_TypeError,
5836 #if PY_MAJOR_VERSION >= 3
5837 "%s() needs keyword-only argument %U", func_name, kw_name);
5839 "%s() needs keyword-only argument %s", func_name,
5840 PyString_AS_STRING(kw_name));
5845 raise_double_keywords_utility_code = UtilityCode(
5847 static void __Pyx_RaiseDoubleKeywordsError(
5848 const char* func_name, PyObject* kw_name); /*proto*/
5851 static void __Pyx_RaiseDoubleKeywordsError(
5852 const char* func_name,
5855 PyErr_Format(PyExc_TypeError,
5856 #if PY_MAJOR_VERSION >= 3
5857 "%s() got multiple values for keyword argument '%U'", func_name, kw_name);
5859 "%s() got multiple values for keyword argument '%s'", func_name,
5860 PyString_AS_STRING(kw_name));
5865 #------------------------------------------------------------------------------------
5867 # __Pyx_CheckKeywordStrings raises an error if non-string keywords
5868 # were passed to a function, or if any keywords were passed to a
5869 # function that does not accept them.
5871 keyword_string_check_utility_code = UtilityCode(
5873 static CYTHON_INLINE int __Pyx_CheckKeywordStrings(PyObject *kwdict,
5874 const char* function_name, int kw_allowed); /*proto*/
5877 static CYTHON_INLINE int __Pyx_CheckKeywordStrings(
5879 const char* function_name,
5884 while (PyDict_Next(kwdict, &pos, &key, 0)) {
5885 #if PY_MAJOR_VERSION < 3
5886 if (unlikely(!PyString_CheckExact(key)) && unlikely(!PyString_Check(key)))
5888 if (unlikely(!PyUnicode_CheckExact(key)) && unlikely(!PyUnicode_Check(key)))
5890 goto invalid_keyword_type;
5892 if ((!kw_allowed) && unlikely(key))
5893 goto invalid_keyword;
5895 invalid_keyword_type:
5896 PyErr_Format(PyExc_TypeError,
5897 "%s() keywords must be strings", function_name);
5900 PyErr_Format(PyExc_TypeError,
5901 #if PY_MAJOR_VERSION < 3
5902 "%s() got an unexpected keyword argument '%s'",
5903 function_name, PyString_AsString(key));
5905 "%s() got an unexpected keyword argument '%U'",
5906 function_name, key);
5912 #------------------------------------------------------------------------------------
5914 # __Pyx_ParseOptionalKeywords copies the optional/unknown keyword
5915 # arguments from the kwds dict into kwds2. If kwds2 is NULL, unknown
5916 # keywords will raise an invalid keyword error.
5918 # Three kinds of errors are checked: 1) non-string keywords, 2)
5919 # unexpected keywords and 3) overlap with positional arguments.
5921 # If num_posargs is greater 0, it denotes the number of positional
5922 # arguments that were passed and that must therefore not appear
5923 # amongst the keywords as well.
5925 # This method does not check for required keyword arguments.
5928 parse_keywords_utility_code = UtilityCode(
5930 static int __Pyx_ParseOptionalKeywords(PyObject *kwds, PyObject **argnames[], \
5931 PyObject *kwds2, PyObject *values[], Py_ssize_t num_pos_args, \
5932 const char* function_name); /*proto*/
5935 static int __Pyx_ParseOptionalKeywords(
5937 PyObject **argnames[],
5940 Py_ssize_t num_pos_args,
5941 const char* function_name)
5943 PyObject *key = 0, *value = 0;
5946 PyObject*** first_kw_arg = argnames + num_pos_args;
5948 while (PyDict_Next(kwds, &pos, &key, &value)) {
5949 name = first_kw_arg;
5950 while (*name && (**name != key)) name++;
5952 values[name-argnames] = value;
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 for (name = first_kw_arg; *name; name++) {
5962 #if PY_MAJOR_VERSION >= 3
5963 if (PyUnicode_GET_SIZE(**name) == PyUnicode_GET_SIZE(key) &&
5964 PyUnicode_Compare(**name, key) == 0) break;
5966 if (PyString_GET_SIZE(**name) == PyString_GET_SIZE(key) &&
5967 _PyString_Eq(**name, key)) break;
5971 values[name-argnames] = value;
5973 /* unexpected keyword found */
5974 for (name=argnames; name != first_kw_arg; name++) {
5975 if (**name == key) goto arg_passed_twice;
5976 #if PY_MAJOR_VERSION >= 3
5977 if (PyUnicode_GET_SIZE(**name) == PyUnicode_GET_SIZE(key) &&
5978 PyUnicode_Compare(**name, key) == 0) goto arg_passed_twice;
5980 if (PyString_GET_SIZE(**name) == PyString_GET_SIZE(key) &&
5981 _PyString_Eq(**name, key)) goto arg_passed_twice;
5985 if (unlikely(PyDict_SetItem(kwds2, key, value))) goto bad;
5987 goto invalid_keyword;
5995 __Pyx_RaiseDoubleKeywordsError(function_name, **name);
5997 invalid_keyword_type:
5998 PyErr_Format(PyExc_TypeError,
5999 "%s() keywords must be strings", function_name);
6002 PyErr_Format(PyExc_TypeError,
6003 #if PY_MAJOR_VERSION < 3
6004 "%s() got an unexpected keyword argument '%s'",
6005 function_name, PyString_AsString(key));
6007 "%s() got an unexpected keyword argument '%U'",
6008 function_name, key);
6015 #------------------------------------------------------------------------------------
6017 traceback_utility_code = UtilityCode(
6019 static void __Pyx_AddTraceback(const char *funcname); /*proto*/
6022 #include "compile.h"
6023 #include "frameobject.h"
6024 #include "traceback.h"
6026 static void __Pyx_AddTraceback(const char *funcname) {
6027 PyObject *py_srcfile = 0;
6028 PyObject *py_funcname = 0;
6029 PyObject *py_globals = 0;
6030 PyCodeObject *py_code = 0;
6031 PyFrameObject *py_frame = 0;
6033 #if PY_MAJOR_VERSION < 3
6034 py_srcfile = PyString_FromString(%(FILENAME)s);
6036 py_srcfile = PyUnicode_FromString(%(FILENAME)s);
6038 if (!py_srcfile) goto bad;
6040 #if PY_MAJOR_VERSION < 3
6041 py_funcname = PyString_FromFormat( "%%s (%%s:%%d)", funcname, %(CFILENAME)s, %(CLINENO)s);
6043 py_funcname = PyUnicode_FromFormat( "%%s (%%s:%%d)", funcname, %(CFILENAME)s, %(CLINENO)s);
6047 #if PY_MAJOR_VERSION < 3
6048 py_funcname = PyString_FromString(funcname);
6050 py_funcname = PyUnicode_FromString(funcname);
6053 if (!py_funcname) goto bad;
6054 py_globals = PyModule_GetDict(%(GLOBALS)s);
6055 if (!py_globals) goto bad;
6056 py_code = PyCode_New(
6057 0, /*int argcount,*/
6058 #if PY_MAJOR_VERSION >= 3
6059 0, /*int kwonlyargcount,*/
6062 0, /*int stacksize,*/
6064 %(EMPTY_BYTES)s, /*PyObject *code,*/
6065 %(EMPTY_TUPLE)s, /*PyObject *consts,*/
6066 %(EMPTY_TUPLE)s, /*PyObject *names,*/
6067 %(EMPTY_TUPLE)s, /*PyObject *varnames,*/
6068 %(EMPTY_TUPLE)s, /*PyObject *freevars,*/
6069 %(EMPTY_TUPLE)s, /*PyObject *cellvars,*/
6070 py_srcfile, /*PyObject *filename,*/
6071 py_funcname, /*PyObject *name,*/
6072 %(LINENO)s, /*int firstlineno,*/
6073 %(EMPTY_BYTES)s /*PyObject *lnotab*/
6075 if (!py_code) goto bad;
6076 py_frame = PyFrame_New(
6077 PyThreadState_GET(), /*PyThreadState *tstate,*/
6078 py_code, /*PyCodeObject *code,*/
6079 py_globals, /*PyObject *globals,*/
6080 0 /*PyObject *locals*/
6082 if (!py_frame) goto bad;
6083 py_frame->f_lineno = %(LINENO)s;
6084 PyTraceBack_Here(py_frame);
6086 Py_XDECREF(py_srcfile);
6087 Py_XDECREF(py_funcname);
6088 Py_XDECREF(py_code);
6089 Py_XDECREF(py_frame);
6092 'FILENAME': Naming.filename_cname,
6093 'LINENO': Naming.lineno_cname,
6094 'CFILENAME': Naming.cfilenm_cname,
6095 'CLINENO': Naming.clineno_cname,
6096 'GLOBALS': Naming.module_cname,
6097 'EMPTY_TUPLE' : Naming.empty_tuple,
6098 'EMPTY_BYTES' : Naming.empty_bytes,
6101 #------------------------------------------------------------------------------------
6103 unraisable_exception_utility_code = UtilityCode(
6105 static void __Pyx_WriteUnraisable(const char *name); /*proto*/
6108 static void __Pyx_WriteUnraisable(const char *name) {
6109 PyObject *old_exc, *old_val, *old_tb;
6111 __Pyx_ErrFetch(&old_exc, &old_val, &old_tb);
6112 #if PY_MAJOR_VERSION < 3
6113 ctx = PyString_FromString(name);
6115 ctx = PyUnicode_FromString(name);
6117 __Pyx_ErrRestore(old_exc, old_val, old_tb);
6119 PyErr_WriteUnraisable(Py_None);
6121 PyErr_WriteUnraisable(ctx);
6126 requires=[restore_exception_utility_code])
6128 #------------------------------------------------------------------------------------
6130 set_vtable_utility_code = UtilityCode(
6132 static int __Pyx_SetVtable(PyObject *dict, void *vtable); /*proto*/
6135 static int __Pyx_SetVtable(PyObject *dict, void *vtable) {
6136 #if PY_VERSION_HEX >= 0x02070000 && !(PY_MAJOR_VERSION==3&&PY_MINOR_VERSION==0)
6137 PyObject *ob = PyCapsule_New(vtable, 0, 0);
6139 PyObject *ob = PyCObject_FromVoidPtr(vtable, 0);
6143 if (PyDict_SetItemString(dict, "__pyx_vtable__", ob) < 0)
6153 #------------------------------------------------------------------------------------
6155 get_vtable_utility_code = UtilityCode(
6157 static int __Pyx_GetVtable(PyObject *dict, void *vtabptr); /*proto*/
6160 static int __Pyx_GetVtable(PyObject *dict, void *vtabptr) {
6161 PyObject *ob = PyMapping_GetItemString(dict, (char *)"__pyx_vtable__");
6164 #if PY_VERSION_HEX >= 0x02070000 && !(PY_MAJOR_VERSION==3&&PY_MINOR_VERSION==0)
6165 *(void **)vtabptr = PyCapsule_GetPointer(ob, 0);
6167 *(void **)vtabptr = PyCObject_AsVoidPtr(ob);
6169 if (!*(void **)vtabptr)
6179 #------------------------------------------------------------------------------------
6181 init_string_tab_utility_code = UtilityCode(
6183 static int __Pyx_InitStrings(__Pyx_StringTabEntry *t); /*proto*/
6186 static int __Pyx_InitStrings(__Pyx_StringTabEntry *t) {
6188 #if PY_MAJOR_VERSION < 3
6189 if (t->is_unicode) {
6190 *t->p = PyUnicode_DecodeUTF8(t->s, t->n - 1, NULL);
6191 } else if (t->intern) {
6192 *t->p = PyString_InternFromString(t->s);
6194 *t->p = PyString_FromStringAndSize(t->s, t->n - 1);
6196 #else /* Python 3+ has unicode identifiers */
6197 if (t->is_unicode | t->is_str) {
6199 *t->p = PyUnicode_InternFromString(t->s);
6200 } else if (t->encoding) {
6201 *t->p = PyUnicode_Decode(t->s, t->n - 1, t->encoding, NULL);
6203 *t->p = PyUnicode_FromStringAndSize(t->s, t->n - 1);
6206 *t->p = PyBytes_FromStringAndSize(t->s, t->n - 1);
6217 #------------------------------------------------------------------------------------
6219 force_init_threads_utility_code = UtilityCode(
6221 #ifndef __PYX_FORCE_INIT_THREADS
6222 #if PY_VERSION_HEX < 0x02040200
6223 #define __PYX_FORCE_INIT_THREADS 1
6225 #define __PYX_FORCE_INIT_THREADS 0
6230 #------------------------------------------------------------------------------------
6232 # Note that cPython ignores PyTrace_EXCEPTION,
6233 # but maybe some other profilers don't.
6235 profile_utility_code = UtilityCode(proto="""
6236 #ifndef CYTHON_PROFILE
6237 #define CYTHON_PROFILE 1
6240 #ifndef CYTHON_PROFILE_REUSE_FRAME
6241 #define CYTHON_PROFILE_REUSE_FRAME 0
6246 #include "compile.h"
6247 #include "frameobject.h"
6248 #include "traceback.h"
6250 #if CYTHON_PROFILE_REUSE_FRAME
6251 #define CYTHON_FRAME_MODIFIER static
6252 #define CYTHON_FRAME_DEL
6254 #define CYTHON_FRAME_MODIFIER
6255 #define CYTHON_FRAME_DEL Py_DECREF(%(FRAME)s)
6258 #define __Pyx_TraceDeclarations \\
6259 static PyCodeObject *%(FRAME_CODE)s = NULL; \\
6260 CYTHON_FRAME_MODIFIER PyFrameObject *%(FRAME)s = NULL; \\
6261 int __Pyx_use_tracing = 0;
6263 #define __Pyx_TraceCall(funcname, srcfile, firstlineno) \\
6264 if (unlikely(PyThreadState_GET()->use_tracing && PyThreadState_GET()->c_profilefunc)) { \\
6265 __Pyx_use_tracing = __Pyx_TraceSetupAndCall(&%(FRAME_CODE)s, &%(FRAME)s, funcname, srcfile, firstlineno); \\
6268 #define __Pyx_TraceException() \\
6269 if (unlikely(__Pyx_use_tracing( && PyThreadState_GET()->use_tracing && PyThreadState_GET()->c_profilefunc) { \\
6270 PyObject *exc_info = __Pyx_GetExceptionTuple(); \\
6272 PyThreadState_GET()->c_profilefunc( \\
6273 PyThreadState_GET()->c_profileobj, %(FRAME)s, PyTrace_EXCEPTION, exc_info); \\
6274 Py_DECREF(exc_info); \\
6278 #define __Pyx_TraceReturn(result) \\
6279 if (unlikely(__Pyx_use_tracing) && PyThreadState_GET()->use_tracing && PyThreadState_GET()->c_profilefunc) { \\
6280 PyThreadState_GET()->c_profilefunc( \\
6281 PyThreadState_GET()->c_profileobj, %(FRAME)s, PyTrace_RETURN, (PyObject*)result); \\
6282 CYTHON_FRAME_DEL; \\
6285 static PyCodeObject *__Pyx_createFrameCodeObject(const char *funcname, const char *srcfile, int firstlineno); /*proto*/
6286 static int __Pyx_TraceSetupAndCall(PyCodeObject** code, PyFrameObject** frame, const char *funcname, const char *srcfile, int firstlineno); /*proto*/
6290 #define __Pyx_TraceDeclarations
6291 #define __Pyx_TraceCall(funcname, srcfile, firstlineno)
6292 #define __Pyx_TraceException()
6293 #define __Pyx_TraceReturn(result)
6295 #endif /* CYTHON_PROFILE */
6298 "FRAME": Naming.frame_cname,
6299 "FRAME_CODE": Naming.frame_code_cname,
6305 static int __Pyx_TraceSetupAndCall(PyCodeObject** code,
6306 PyFrameObject** frame,
6307 const char *funcname,
6308 const char *srcfile,
6310 if (*frame == NULL || !CYTHON_PROFILE_REUSE_FRAME) {
6311 if (*code == NULL) {
6312 *code = __Pyx_createFrameCodeObject(funcname, srcfile, firstlineno);
6313 if (*code == NULL) return 0;
6315 *frame = PyFrame_New(
6316 PyThreadState_GET(), /*PyThreadState *tstate*/
6317 *code, /*PyCodeObject *code*/
6318 PyModule_GetDict(%(MODULE)s), /*PyObject *globals*/
6319 0 /*PyObject *locals*/
6321 if (*frame == NULL) return 0;
6324 (*frame)->f_tstate = PyThreadState_GET();
6326 return PyThreadState_GET()->c_profilefunc(PyThreadState_GET()->c_profileobj, *frame, PyTrace_CALL, NULL) == 0;
6329 static PyCodeObject *__Pyx_createFrameCodeObject(const char *funcname, const char *srcfile, int firstlineno) {
6330 PyObject *py_srcfile = 0;
6331 PyObject *py_funcname = 0;
6332 PyCodeObject *py_code = 0;
6334 #if PY_MAJOR_VERSION < 3
6335 py_funcname = PyString_FromString(funcname);
6336 py_srcfile = PyString_FromString(srcfile);
6338 py_funcname = PyUnicode_FromString(funcname);
6339 py_srcfile = PyUnicode_FromString(srcfile);
6341 if (!py_funcname | !py_srcfile) goto bad;
6343 py_code = PyCode_New(
6344 0, /*int argcount,*/
6345 #if PY_MAJOR_VERSION >= 3
6346 0, /*int kwonlyargcount,*/
6349 0, /*int stacksize,*/
6351 %(EMPTY_BYTES)s, /*PyObject *code,*/
6352 %(EMPTY_TUPLE)s, /*PyObject *consts,*/
6353 %(EMPTY_TUPLE)s, /*PyObject *names,*/
6354 %(EMPTY_TUPLE)s, /*PyObject *varnames,*/
6355 %(EMPTY_TUPLE)s, /*PyObject *freevars,*/
6356 %(EMPTY_TUPLE)s, /*PyObject *cellvars,*/
6357 py_srcfile, /*PyObject *filename,*/
6358 py_funcname, /*PyObject *name,*/
6359 firstlineno, /*int firstlineno,*/
6360 %(EMPTY_BYTES)s /*PyObject *lnotab*/
6364 Py_XDECREF(py_srcfile);
6365 Py_XDECREF(py_funcname);
6370 #endif /* CYTHON_PROFILE */
6372 'EMPTY_TUPLE' : Naming.empty_tuple,
6373 'EMPTY_BYTES' : Naming.empty_bytes,
6374 "MODULE": Naming.module_cname,