2 # Pyrex - Parse tree nodes for expressions
7 cython.declare(error=object, warning=object, warn_once=object, InternalError=object,
8 CompileError=object, UtilityCode=object, StringEncoding=object, operator=object,
9 Naming=object, Nodes=object, PyrexTypes=object, py_object_type=object,
10 list_type=object, tuple_type=object, set_type=object, dict_type=object, \
11 unicode_type=object, str_type=object, bytes_type=object, type_type=object,
12 Builtin=object, Symtab=object, Utils=object, find_coercion_error=object,
13 debug_disposal_code=object, debug_temp_alloc=object, debug_coercion=object)
17 from Errors import error, warning, warn_once, InternalError, CompileError
18 from Errors import hold_errors, release_errors, held_errors, report_error
19 from Code import UtilityCode
23 from Nodes import Node
25 from PyrexTypes import py_object_type, c_long_type, typecast, error_type, \
27 from Builtin import list_type, tuple_type, set_type, dict_type, \
28 unicode_type, str_type, bytes_type, type_type
32 from Cython import Utils
33 from Annotate import AnnotationItem
35 from Cython.Debugging import print_call_chain
36 from DebugFlags import debug_disposal_code, debug_temp_alloc, \
40 from __builtin__ import basestring
42 basestring = str # Python 3
44 class NotConstant(object):
46 return "<NOT CONSTANT>"
48 not_a_constant = NotConstant()
49 constant_value_not_set = object()
51 # error messages when coercing from key[0] to key[1]
52 find_coercion_error = {
53 # string related errors
54 (Builtin.unicode_type, Builtin.bytes_type) : "Cannot convert Unicode string to 'bytes' implicitly, encoding required.",
55 (Builtin.unicode_type, Builtin.str_type) : "Cannot convert Unicode string to 'str' implicitly. This is not portable and requires explicit encoding.",
56 (Builtin.unicode_type, PyrexTypes.c_char_ptr_type) : "Unicode objects do not support coercion to C types.",
57 (Builtin.bytes_type, Builtin.unicode_type) : "Cannot convert 'bytes' object to unicode implicitly, decoding required",
58 (Builtin.bytes_type, Builtin.str_type) : "Cannot convert 'bytes' object to str implicitly. This is not portable to Py3.",
59 (Builtin.str_type, Builtin.unicode_type) : "str objects do not support coercion to unicode, use a unicode string literal instead (u'')",
60 (Builtin.str_type, Builtin.bytes_type) : "Cannot convert 'str' to 'bytes' implicitly. This is not portable.",
61 (Builtin.str_type, PyrexTypes.c_char_ptr_type) : "'str' objects do not support coercion to C types (use 'bytes'?).",
62 (PyrexTypes.c_char_ptr_type, Builtin.unicode_type) : "Cannot convert 'char*' to unicode implicitly, decoding required",
63 (PyrexTypes.c_uchar_ptr_type, Builtin.unicode_type) : "Cannot convert 'char*' to unicode implicitly, decoding required",
68 # subexprs [string] Class var holding names of subexpr node attrs
69 # type PyrexType Type of the result
70 # result_code string Code fragment
71 # result_ctype string C type of result_code if different from type
72 # is_temp boolean Result is in a temporary variable
73 # is_sequence_constructor
74 # boolean Is a list or tuple constructor expression
75 # is_starred boolean Is a starred expression (e.g. '*a')
77 # [ExprNode or [ExprNode or None] or None]
78 # Cached result of subexpr_nodes()
79 # use_managed_ref boolean use ref-counted temps/assignments/etc.
84 old_temp = None # error checker for multiple frees etc.
85 use_managed_ref = True # can be set by optimisation transforms
87 # The Analyse Expressions phase for expressions is split
88 # into two sub-phases:
91 # Determines the result type of the expression based
92 # on the types of its sub-expressions, and inserts
93 # coercion nodes into the expression tree where needed.
94 # Marks nodes which will need to have temporary variables
98 # Allocates temporary variables where needed, and fills
99 # in the result_code field of each node.
101 # ExprNode provides some convenience routines which
102 # perform both of the above phases. These should only
103 # be called from statement nodes, and only when no
104 # coercion nodes need to be added around the expression
105 # being analysed. In that case, the above two phases
106 # should be invoked separately.
108 # Framework code in ExprNode provides much of the common
109 # processing for the various phases. It makes use of the
110 # 'subexprs' class attribute of ExprNodes, which should
111 # contain a list of the names of attributes which can
112 # hold sub-nodes or sequences of sub-nodes.
114 # The framework makes use of a number of abstract methods.
115 # Their responsibilities are as follows.
117 # Declaration Analysis phase
119 # analyse_target_declaration
120 # Called during the Analyse Declarations phase to analyse
121 # the LHS of an assignment or argument of a del statement.
122 # Nodes which cannot be the LHS of an assignment need not
125 # Expression Analysis phase
128 # - Call analyse_types on all sub-expressions.
129 # - Check operand types, and wrap coercion nodes around
130 # sub-expressions where needed.
131 # - Set the type of this node.
132 # - If a temporary variable will be required for the
133 # result, set the is_temp flag of this node.
135 # analyse_target_types
136 # Called during the Analyse Types phase to analyse
137 # the LHS of an assignment or argument of a del
138 # statement. Similar responsibilities to analyse_types.
141 # Called by the default implementation of allocate_target_temps.
142 # Should return a C lvalue for assigning to the node. The default
143 # implementation calls calculate_result_code.
146 # - Check that this node and its subnodes form a
147 # legal constant expression. If so, do nothing,
148 # otherwise call not_const.
150 # The default implementation of check_const
151 # assumes that the expression is not constant.
154 # - Same as check_const, except check that the
155 # expression is a C lvalue whose address is
156 # constant. Otherwise, call addr_not_const.
158 # The default implementation of calc_const_addr
159 # assumes that the expression is not a constant
162 # Code Generation phase
164 # generate_evaluation_code
165 # - Call generate_evaluation_code for sub-expressions.
166 # - Perform the functions of generate_result_code
168 # - If result is temporary, call generate_disposal_code
169 # on all sub-expressions.
171 # A default implementation of generate_evaluation_code
172 # is provided which uses the following abstract methods:
174 # generate_result_code
175 # - Generate any C statements necessary to calculate
176 # the result of this node from the results of its
179 # calculate_result_code
180 # - Should return a C code fragment evaluating to the
181 # result. This is only called when the result is not
184 # generate_assignment_code
185 # Called on the LHS of an assignment.
186 # - Call generate_evaluation_code for sub-expressions.
187 # - Generate code to perform the assignment.
188 # - If the assignment absorbed a reference, call
189 # generate_post_assignment_code on the RHS,
190 # otherwise call generate_disposal_code on it.
192 # generate_deletion_code
193 # Called on an argument of a del statement.
194 # - Call generate_evaluation_code for sub-expressions.
195 # - Generate code to perform the deletion.
196 # - Call generate_disposal_code on all sub-expressions.
200 is_sequence_constructor = 0
203 saved_subexpr_nodes = None
208 constant_result = constant_value_not_set
211 _get_child_attrs = operator.attrgetter('subexprs')
212 except AttributeError:
214 def __get_child_attrs(self):
216 _get_child_attrs = __get_child_attrs
217 child_attrs = property(fget=_get_child_attrs)
219 def not_implemented(self, method_name):
220 print_call_chain(method_name, "not implemented") ###
222 "%s.%s not implemented" %
223 (self.__class__.__name__, method_name))
228 def is_ephemeral(self):
229 # An ephemeral node is one whose result is in
230 # a Python temporary and we suspect there are no
231 # other references to it. Certain operations are
232 # disallowed on such values, since they are
233 # likely to result in a dangling pointer.
234 return self.type.is_pyobject and self.is_temp
236 def subexpr_nodes(self):
237 # Extract a list of subexpression nodes based
238 # on the contents of the subexprs class attribute.
240 for name in self.subexprs:
241 item = getattr(self, name)
243 if type(item) is list:
251 return self.temp_code
253 return self.calculate_result_code()
255 def result_as(self, type = None):
256 # Return the result code cast to the specified C type.
257 return typecast(type, self.ctype(), self.result())
260 # Return the result code cast to PyObject *.
261 return self.result_as(py_object_type)
264 # Return the native C type of the result (i.e. the
265 # C type of the result_code expression).
266 return self.result_ctype or self.type
268 def get_constant_c_result_code(self):
269 # Return the constant value of this node as a result code
270 # string, or None if the node is not constant. This method
271 # can be called when the constant result code is required
272 # before the code generation phase.
274 # The return value is a string that can represent a simple C
275 # value, a constant C name or a constant C expression. If the
276 # node type depends on Python code, this must return None.
279 def calculate_constant_result(self):
280 # Calculate the constant compile time result value of this
281 # expression and store it in ``self.constant_result``. Does
282 # nothing by default, thus leaving ``self.constant_result``
283 # unknown. If valid, the result can be an arbitrary Python
286 # This must only be called when it is assured that all
287 # sub-expressions have a valid constant_result value. The
288 # ConstantFolding transform will do this.
291 def has_constant_result(self):
292 return self.constant_result is not constant_value_not_set and \
293 self.constant_result is not not_a_constant
295 def compile_time_value(self, denv):
296 # Return value of compile-time expression, or report error.
297 error(self.pos, "Invalid compile-time expression")
299 def compile_time_value_error(self, e):
300 error(self.pos, "Error in compile-time expression: %s: %s" % (
301 e.__class__.__name__, e))
303 # ------------- Declaration Analysis ----------------
305 def analyse_target_declaration(self, env):
306 error(self.pos, "Cannot assign to or delete this")
308 # ------------- Expression Analysis ----------------
310 def analyse_const_expression(self, env):
311 # Called during the analyse_declarations phase of a
312 # constant expression. Analyses the expression's type,
313 # checks whether it is a legal const expression,
314 # and determines its value.
315 self.analyse_types(env)
316 return self.check_const()
318 def analyse_expressions(self, env):
319 # Convenience routine performing both the Type
320 # Analysis and Temp Allocation phases for a whole
322 self.analyse_types(env)
324 def analyse_target_expression(self, env, rhs):
325 # Convenience routine performing both the Type
326 # Analysis and Temp Allocation phases for the LHS of
328 self.analyse_target_types(env)
330 def analyse_boolean_expression(self, env):
331 # Analyse expression and coerce to a boolean.
332 self.analyse_types(env)
333 bool = self.coerce_to_boolean(env)
336 def analyse_temp_boolean_expression(self, env):
337 # Analyse boolean expression and coerce result into
338 # a temporary. This is used when a branch is to be
339 # performed on the result and we won't have an
340 # opportunity to ensure disposal code is executed
341 # afterwards. By forcing the result into a temporary,
342 # we ensure that all disposal has been done by the
343 # time we get the result.
344 self.analyse_types(env)
345 return self.coerce_to_boolean(env).coerce_to_simple(env)
347 # --------------- Type Inference -----------------
349 def type_dependencies(self, env):
350 # Returns the list of entries whose types must be determined
351 # before the type of self can be infered.
352 if hasattr(self, 'type') and self.type is not None:
354 return sum([node.type_dependencies(env) for node in self.subexpr_nodes()], ())
356 def infer_type(self, env):
357 # Attempt to deduce the type of self.
358 # Differs from analyse_types as it avoids unnecessary
359 # analysis of subexpressions, but can assume everything
360 # in self.type_dependencies() has been resolved.
361 if hasattr(self, 'type') and self.type is not None:
363 elif hasattr(self, 'entry') and self.entry is not None:
364 return self.entry.type
366 self.not_implemented("infer_type")
368 # --------------- Type Analysis ------------------
370 def analyse_as_module(self, env):
371 # If this node can be interpreted as a reference to a
372 # cimported module, return its scope, else None.
375 def analyse_as_type(self, env):
376 # If this node can be interpreted as a reference to a
377 # type, return that type, else None.
380 def analyse_as_extension_type(self, env):
381 # If this node can be interpreted as a reference to an
382 # extension type, return its type, else None.
385 def analyse_types(self, env):
386 self.not_implemented("analyse_types")
388 def analyse_target_types(self, env):
389 self.analyse_types(env)
391 def nogil_check(self, env):
392 # By default, any expression based on Python objects is
393 # prevented in nogil environments. Subtypes must override
394 # this if they can work without the GIL.
395 if self.type.is_pyobject:
398 def gil_assignment_check(self, env):
399 if env.nogil and self.type.is_pyobject:
400 error(self.pos, "Assignment of Python object not allowed without gil")
402 def check_const(self):
407 error(self.pos, "Not allowed in a constant expression")
409 def check_const_addr(self):
410 self.addr_not_const()
413 def addr_not_const(self):
414 error(self.pos, "Address is not constant")
416 # ----------------- Result Allocation -----------------
418 def result_in_temp(self):
419 # Return true if result is in a temporary owned by
420 # this node or one of its subexpressions. Overridden
421 # by certain nodes which can share the result of
425 def target_code(self):
426 # Return code fragment for use as LHS of a C assignment.
427 return self.calculate_result_code()
429 def calculate_result_code(self):
430 self.not_implemented("calculate_result_code")
432 # def release_target_temp(self, env):
433 # # Release temporaries used by LHS of an assignment.
434 # self.release_subexpr_temps(env)
436 def allocate_temp_result(self, code):
438 raise RuntimeError("Temp allocated multiple times in %r: %r" % (self.__class__.__name__, self.pos))
442 type = PyrexTypes.py_object_type
443 self.temp_code = code.funcstate.allocate_temp(
444 type, manage_ref=self.use_managed_ref)
446 self.temp_code = None
448 def release_temp_result(self, code):
449 if not self.temp_code:
451 raise RuntimeError("temp %s released multiple times in %s" % (
452 self.old_temp, self.__class__.__name__))
454 raise RuntimeError("no temp, but release requested in %s" % (
455 self.__class__.__name__))
456 code.funcstate.release_temp(self.temp_code)
457 self.old_temp = self.temp_code
458 self.temp_code = None
460 # ---------------- Code Generation -----------------
462 def make_owned_reference(self, code):
463 # If result is a pyobject, make sure we own
465 if self.type.is_pyobject and not self.result_in_temp():
466 code.put_incref(self.result(), self.ctype())
468 def generate_evaluation_code(self, code):
469 code.mark_pos(self.pos)
471 # Generate code to evaluate this node and
472 # its sub-expressions, and dispose of any
473 # temporary results of its sub-expressions.
474 self.generate_subexpr_evaluation_code(code)
477 self.allocate_temp_result(code)
479 self.generate_result_code(code)
481 # If we are temp we do not need to wait until this node is disposed
482 # before disposing children.
483 self.generate_subexpr_disposal_code(code)
484 self.free_subexpr_temps(code)
486 def generate_subexpr_evaluation_code(self, code):
487 for node in self.subexpr_nodes():
488 node.generate_evaluation_code(code)
490 def generate_result_code(self, code):
491 self.not_implemented("generate_result_code")
493 def generate_disposal_code(self, code):
495 if self.type.is_pyobject:
496 code.put_decref_clear(self.result(), self.ctype())
498 # Already done if self.is_temp
499 self.generate_subexpr_disposal_code(code)
501 def generate_subexpr_disposal_code(self, code):
502 # Generate code to dispose of temporary results
503 # of all sub-expressions.
504 for node in self.subexpr_nodes():
505 node.generate_disposal_code(code)
507 def generate_post_assignment_code(self, code):
509 if self.type.is_pyobject:
510 code.putln("%s = 0;" % self.result())
512 self.generate_subexpr_disposal_code(code)
514 def generate_assignment_code(self, rhs, code):
515 # Stub method for nodes which are not legal as
516 # the LHS of an assignment. An error will have
517 # been reported earlier.
520 def generate_deletion_code(self, code):
521 # Stub method for nodes that are not legal as
522 # the argument of a del statement. An error
523 # will have been reported earlier.
526 def free_temps(self, code):
528 if not self.type.is_void:
529 self.release_temp_result(code)
531 self.free_subexpr_temps(code)
533 def free_subexpr_temps(self, code):
534 for sub in self.subexpr_nodes():
537 def generate_function_definitions(self, env, code):
540 # ---------------- Annotation ---------------------
542 def annotate(self, code):
543 for node in self.subexpr_nodes():
546 # ----------------- Coercion ----------------------
548 def coerce_to(self, dst_type, env):
549 # Coerce the result so that it can be assigned to
550 # something of type dst_type. If processing is necessary,
551 # wraps this node in a coercion node and returns that.
552 # Otherwise, returns this node unchanged.
554 # This method is called during the analyse_expressions
555 # phase of the src_node's processing.
557 # Note that subclasses that override this (especially
558 # ConstNodes) must not (re-)set their own .type attribute
559 # here. Since expression nodes may turn up in different
560 # places in the tree (e.g. inside of CloneNodes in cascaded
561 # assignments), this method must return a new node instance
562 # if it changes the type.
566 src_is_py_type = src_type.is_pyobject
567 dst_is_py_type = dst_type.is_pyobject
569 if self.check_for_coercion_error(dst_type):
572 if dst_type.is_reference:
573 dst_type = dst_type.ref_base_type
575 if dst_type.is_pyobject:
576 if not src.type.is_pyobject:
577 if dst_type is bytes_type and src.type.is_int:
578 src = CoerceIntToBytesNode(src, env)
580 src = CoerceToPyTypeNode(src, env)
581 if not src.type.subtype_of(dst_type):
582 if not isinstance(src, NoneNode):
583 src = PyTypeTestNode(src, dst_type, env)
584 elif src.type.is_pyobject:
585 src = CoerceFromPyTypeNode(dst_type, src, env)
586 elif (dst_type.is_complex
587 and src_type != dst_type
588 and dst_type.assignable_from(src_type)):
589 src = CoerceToComplexNode(src, dst_type, env)
590 else: # neither src nor dst are py types
591 # Added the string comparison, since for c types that
592 # is enough, but Cython gets confused when the types are
593 # in different pxi files.
594 if not (str(src.type) == str(dst_type) or dst_type.assignable_from(src_type)):
595 self.fail_assignment(dst_type)
598 def fail_assignment(self, dst_type):
599 error(self.pos, "Cannot assign type '%s' to '%s'" % (self.type, dst_type))
601 def check_for_coercion_error(self, dst_type, fail=False, default=None):
602 if fail and not default:
603 default = "Cannot assign type '%(FROM)s' to '%(TO)s'"
604 message = find_coercion_error((self.type, dst_type), default)
605 if message is not None:
606 error(self.pos, message % {'FROM': self.type, 'TO': dst_type})
609 self.fail_assignment(dst_type)
613 def coerce_to_pyobject(self, env):
614 return self.coerce_to(PyrexTypes.py_object_type, env)
616 def coerce_to_boolean(self, env):
617 # Coerce result to something acceptable as
620 # if it's constant, calculate the result now
621 if self.has_constant_result():
622 bool_value = bool(self.constant_result)
623 return BoolNode(self.pos, value=bool_value,
624 constant_result=bool_value)
627 if type.is_pyobject or type.is_ptr or type.is_float:
628 return CoerceToBooleanNode(self, env)
630 if not (type.is_int or type.is_enum or type.is_error):
632 "Type '%s' not acceptable as a boolean" % type)
635 def coerce_to_integer(self, env):
636 # If not already some C integer type, coerce to longint.
640 return self.coerce_to(PyrexTypes.c_long_type, env)
642 def coerce_to_temp(self, env):
643 # Ensure that the result is in a temporary.
644 if self.result_in_temp():
647 return CoerceToTempNode(self, env)
649 def coerce_to_simple(self, env):
650 # Ensure that the result is simple (see is_simple).
654 return self.coerce_to_temp(env)
657 # A node is simple if its result is something that can
658 # be referred to without performing any operations, e.g.
659 # a constant, local var, C global var, struct member
660 # reference, or temporary.
661 return self.result_in_temp()
663 def may_be_none(self):
664 if not self.type.is_pyobject:
666 if self.constant_result not in (not_a_constant, constant_value_not_set):
667 return self.constant_result is not None
670 def as_cython_attribute(self):
673 def as_none_safe_node(self, message, error="PyExc_TypeError"):
674 # Wraps the node in a NoneCheckNode if it is not known to be
675 # not-None (e.g. because it is a Python literal).
676 if self.may_be_none():
677 return NoneCheckNode(self, error, message)
682 class AtomicExprNode(ExprNode):
683 # Abstract base class for expression nodes which have
684 # no sub-expressions.
688 # Override to optimize -- we know we have no children
689 def generate_subexpr_evaluation_code(self, code):
691 def generate_subexpr_disposal_code(self, code):
694 class PyConstNode(AtomicExprNode):
695 # Abstract base class for constant Python values.
698 type = py_object_type
703 def may_be_none(self):
706 def analyse_types(self, env):
709 def calculate_result_code(self):
712 def generate_result_code(self, code):
716 class NoneNode(PyConstNode):
717 # The constant value None
721 constant_result = None
725 def compile_time_value(self, denv):
728 def may_be_none(self):
732 class EllipsisNode(PyConstNode):
733 # '...' in a subscript list.
735 value = "Py_Ellipsis"
737 constant_result = Ellipsis
739 def compile_time_value(self, denv):
743 class ConstNode(AtomicExprNode):
744 # Abstract base type for literal constant nodes.
746 # value string C code fragment
754 def may_be_none(self):
757 def analyse_types(self, env):
758 pass # Types are held in class variables
760 def check_const(self):
763 def get_constant_c_result_code(self):
764 return self.calculate_result_code()
766 def calculate_result_code(self):
767 return str(self.value)
769 def generate_result_code(self, code):
773 class BoolNode(ConstNode):
774 type = PyrexTypes.c_bint_type
775 # The constant value True or False
777 def calculate_constant_result(self):
778 self.constant_result = self.value
780 def compile_time_value(self, denv):
783 def calculate_result_code(self):
784 return str(int(self.value))
787 class NullNode(ConstNode):
788 type = PyrexTypes.c_null_ptr_type
792 def get_constant_c_result_code(self):
796 class CharNode(ConstNode):
797 type = PyrexTypes.c_char_type
799 def calculate_constant_result(self):
800 self.constant_result = ord(self.value)
802 def compile_time_value(self, denv):
803 return ord(self.value)
805 def calculate_result_code(self):
806 return "'%s'" % StringEncoding.escape_char(self.value)
809 class IntNode(ConstNode):
812 # longness "" or "L" or "LL"
813 # is_c_literal True/False/None creator considers this a C integer literal
817 is_c_literal = None # unknown
819 def __init__(self, pos, **kwds):
820 ExprNode.__init__(self, pos, **kwds)
821 if 'type' not in kwds:
822 self.type = self.find_suitable_type_for_value()
824 def find_suitable_type_for_value(self):
825 if self.constant_result is constant_value_not_set:
827 self.calculate_constant_result()
830 # we ignore 'is_c_literal = True' and instead map signed 32bit
831 # integers as C long values
832 if self.is_c_literal or \
833 self.constant_result in (constant_value_not_set, not_a_constant) or \
834 self.unsigned or self.longness == 'LL':
835 # clearly a C literal
836 rank = (self.longness == 'LL') and 2 or 1
837 suitable_type = PyrexTypes.modifiers_and_name_to_type[not self.unsigned, rank, "int"]
839 suitable_type = PyrexTypes.widest_numeric_type(suitable_type, self.type)
841 # C literal or Python literal - split at 32bit boundary
842 if self.constant_result >= -2**31 and self.constant_result < 2**31:
843 if self.type and self.type.is_int:
844 suitable_type = self.type
846 suitable_type = PyrexTypes.c_long_type
848 suitable_type = PyrexTypes.py_object_type
851 def coerce_to(self, dst_type, env):
852 if self.type is dst_type:
854 elif dst_type.is_float:
855 if self.constant_result is not not_a_constant:
856 float_value = float(self.constant_result)
857 return FloatNode(self.pos, value=repr(float_value), type=dst_type,
858 constant_result=float_value)
860 return FloatNode(self.pos, value=self.value, type=dst_type,
861 constant_result=not_a_constant)
862 if dst_type.is_numeric and not dst_type.is_complex:
863 node = IntNode(self.pos, value=self.value, constant_result=self.constant_result,
864 type = dst_type, is_c_literal = True,
865 unsigned=self.unsigned, longness=self.longness)
867 elif dst_type.is_pyobject:
868 node = IntNode(self.pos, value=self.value, constant_result=self.constant_result,
869 type = PyrexTypes.py_object_type, is_c_literal = False,
870 unsigned=self.unsigned, longness=self.longness)
872 # FIXME: not setting the type here to keep it working with
873 # complex numbers. Should they be special cased?
874 node = IntNode(self.pos, value=self.value, constant_result=self.constant_result,
875 unsigned=self.unsigned, longness=self.longness)
876 # We still need to perform normal coerce_to processing on the
877 # result, because we might be coercing to an extension type,
878 # in which case a type test node will be needed.
879 return ConstNode.coerce_to(node, dst_type, env)
881 def coerce_to_boolean(self, env):
883 self.pos, value=self.value,
884 type = PyrexTypes.c_bint_type,
885 unsigned=self.unsigned, longness=self.longness)
887 def generate_evaluation_code(self, code):
888 if self.type.is_pyobject:
889 # pre-allocate a Python version of the number
890 plain_integer_string = self.value_as_c_integer_string(plain_digits=True)
891 self.result_code = code.get_py_num(plain_integer_string, self.longness)
893 self.result_code = self.get_constant_c_result_code()
895 def get_constant_c_result_code(self):
896 return self.value_as_c_integer_string() + self.unsigned + self.longness
898 def value_as_c_integer_string(self, plain_digits=False):
900 if isinstance(value, basestring) and len(value) > 2:
901 # must convert C-incompatible Py3 oct/bin notations
904 value = int(value[2:], 8)
906 value = value[0] + value[2:] # '0o123' => '0123'
907 elif value[1] in 'bB':
908 value = int(value[2:], 2)
909 elif plain_digits and value[1] in 'xX':
910 value = int(value[2:], 16)
913 def calculate_result_code(self):
914 return self.result_code
916 def calculate_constant_result(self):
917 self.constant_result = Utils.str_to_number(self.value)
919 def compile_time_value(self, denv):
920 return Utils.str_to_number(self.value)
923 class FloatNode(ConstNode):
924 type = PyrexTypes.c_double_type
926 def calculate_constant_result(self):
927 self.constant_result = float(self.value)
929 def compile_time_value(self, denv):
930 return float(self.value)
932 def calculate_result_code(self):
934 assert isinstance(strval, (str, unicode))
935 cmpval = repr(float(strval))
937 return "(Py_HUGE_VAL * 0)"
938 elif cmpval == 'inf':
940 elif cmpval == '-inf':
941 return "(-Py_HUGE_VAL)"
946 class BytesNode(ConstNode):
947 # A char* or bytes literal
951 type = PyrexTypes.c_char_ptr_type
953 def compile_time_value(self, denv):
956 def analyse_as_type(self, env):
957 type = PyrexTypes.parse_basic_type(self.value)
960 from TreeFragment import TreeFragment
961 pos = (self.pos[0], self.pos[1], self.pos[2]-7)
962 declaration = TreeFragment(u"sizeof(%s)" % self.value, name=pos[0].filename, initial_pos=pos)
963 sizeof_node = declaration.root.stats[0].expr
964 sizeof_node.analyse_types(env)
965 if isinstance(sizeof_node, SizeofTypeNode):
966 return sizeof_node.arg_type
968 def can_coerce_to_char_literal(self):
969 return len(self.value) == 1
971 def coerce_to_boolean(self, env):
972 # This is special because we start off as a C char*. Testing
973 # that for truth directly would yield the wrong result.
974 return BoolNode(self.pos, value=bool(self.value))
976 def coerce_to(self, dst_type, env):
978 if not self.can_coerce_to_char_literal():
979 error(self.pos, "Only single-character string literals can be coerced into ints.")
981 if dst_type is PyrexTypes.c_py_unicode_type:
982 error(self.pos, "Bytes literals cannot coerce to Py_UNICODE, use a unicode literal instead.")
984 return CharNode(self.pos, value=self.value)
986 node = BytesNode(self.pos, value=self.value)
987 if dst_type == PyrexTypes.c_char_ptr_type:
988 node.type = PyrexTypes.c_char_ptr_type
990 elif dst_type == PyrexTypes.c_uchar_ptr_type:
991 node.type = PyrexTypes.c_char_ptr_type
992 return CastNode(node, PyrexTypes.c_uchar_ptr_type)
994 if not self.type.is_pyobject:
995 if dst_type in (py_object_type, Builtin.bytes_type):
996 node.type = Builtin.bytes_type
997 elif dst_type.is_pyobject:
998 self.fail_assignment(dst_type)
1000 elif dst_type.is_pyobject and dst_type is not py_object_type:
1001 self.check_for_coercion_error(dst_type, fail=True)
1004 # We still need to perform normal coerce_to processing on the
1005 # result, because we might be coercing to an extension type,
1006 # in which case a type test node will be needed.
1007 return ConstNode.coerce_to(node, dst_type, env)
1009 def as_py_string_node(self, env):
1010 # Return a new BytesNode with the same value as this node
1011 # but whose type is a Python type instead of a C type.
1012 return BytesNode(self.pos, value = self.value, type = Builtin.bytes_type)
1014 def generate_evaluation_code(self, code):
1015 if self.type.is_pyobject:
1016 self.result_code = code.get_py_string_const(self.value)
1018 self.result_code = code.get_string_const(self.value)
1020 def get_constant_c_result_code(self):
1023 def calculate_result_code(self):
1024 return self.result_code
1027 class UnicodeNode(PyConstNode):
1028 # A Python unicode object
1030 # value EncodedString
1031 # bytes_value BytesLiteral the literal parsed as bytes string ('-3' unicode literals only)
1036 def coerce_to(self, dst_type, env):
1037 if dst_type is self.type:
1039 elif dst_type is PyrexTypes.c_py_unicode_type:
1040 if not self.can_coerce_to_char_literal():
1041 error(self.pos, "Only single-character Unicode string literals can be coerced into Py_UNICODE.")
1043 int_value = ord(self.value)
1044 return IntNode(self.pos, value=int_value, constant_result=int_value)
1045 elif not dst_type.is_pyobject:
1046 if dst_type.is_string and self.bytes_value is not None:
1047 # special case: '-3' enforced unicode literal used in a C char* context
1048 return BytesNode(self.pos, value=self.bytes_value).coerce_to(dst_type, env)
1049 error(self.pos, "Unicode literals do not support coercion to C types other than Py_UNICODE.")
1050 elif dst_type is not py_object_type:
1051 if not self.check_for_coercion_error(dst_type):
1052 self.fail_assignment(dst_type)
1055 def can_coerce_to_char_literal(self):
1056 return len(self.value) == 1
1058 def contains_surrogates(self):
1059 # Check if the unicode string contains surrogate code points
1060 # on a CPython platform with wide (UCS-4) or narrow (UTF-16)
1061 # Unicode, i.e. characters that would be spelled as two
1062 # separate code units on a narrow platform.
1063 for c in map(ord, self.value):
1064 if c > 65535: # can only happen on wide platforms
1066 # We only look for the first code unit (D800-DBFF) of a
1067 # surrogate pair - if we find one, the other one
1068 # (DC00-DFFF) is likely there, too. If we don't find it,
1069 # any second code unit cannot make for a surrogate pair by
1071 if c >= 0xD800 and c <= 0xDBFF:
1075 def generate_evaluation_code(self, code):
1076 self.result_code = code.get_py_string_const(self.value)
1078 def calculate_result_code(self):
1079 return self.result_code
1081 def compile_time_value(self, env):
1085 class StringNode(PyConstNode):
1086 # A Python str object, i.e. a byte string in Python 2.x and a
1087 # unicode string in Python 3.x
1089 # value BytesLiteral (or EncodedString with ASCII content)
1090 # unicode_value EncodedString or None
1091 # is_identifier boolean
1094 is_identifier = None
1095 unicode_value = None
1097 def coerce_to(self, dst_type, env):
1098 if dst_type is not py_object_type and not str_type.subtype_of(dst_type):
1099 # if dst_type is Builtin.bytes_type:
1100 # # special case: bytes = 'str literal'
1101 # return BytesNode(self.pos, value=self.value)
1102 if not dst_type.is_pyobject:
1103 return BytesNode(self.pos, value=self.value).coerce_to(dst_type, env)
1104 self.check_for_coercion_error(dst_type, fail=True)
1106 # this will be a unicode string in Py3, so make sure we can decode it
1107 if self.value.encoding and isinstance(self.value, StringEncoding.BytesLiteral):
1109 self.value.decode(self.value.encoding)
1110 except UnicodeDecodeError:
1111 error(self.pos, ("Decoding unprefixed string literal from '%s' failed. Consider using"
1112 "a byte string or unicode string explicitly, "
1113 "or adjust the source code encoding.") % self.value.encoding)
1117 def can_coerce_to_char_literal(self):
1118 return not self.is_identifier and len(self.value) == 1
1120 def generate_evaluation_code(self, code):
1121 self.result_code = code.get_py_string_const(
1122 self.value, identifier=self.is_identifier, is_str=True)
1124 def get_constant_c_result_code(self):
1127 def calculate_result_code(self):
1128 return self.result_code
1130 def compile_time_value(self, env):
1134 class IdentifierStringNode(StringNode):
1135 # A special str value that represents an identifier (bytes in Py2,
1137 is_identifier = True
1140 class LongNode(AtomicExprNode):
1141 # Python long integer literal
1145 type = py_object_type
1147 def calculate_constant_result(self):
1148 self.constant_result = Utils.str_to_number(self.value)
1150 def compile_time_value(self, denv):
1151 return Utils.str_to_number(self.value)
1153 def analyse_types(self, env):
1156 def may_be_none(self):
1159 gil_message = "Constructing Python long int"
1161 def generate_result_code(self, code):
1163 '%s = PyLong_FromString((char *)"%s", 0, 0); %s' % (
1166 code.error_goto_if_null(self.result(), self.pos)))
1167 code.put_gotref(self.py_result())
1170 class ImagNode(AtomicExprNode):
1171 # Imaginary number literal
1173 # value float imaginary part
1175 type = PyrexTypes.c_double_complex_type
1177 def calculate_constant_result(self):
1178 self.constant_result = complex(0.0, self.value)
1180 def compile_time_value(self, denv):
1181 return complex(0.0, self.value)
1183 def analyse_types(self, env):
1184 self.type.create_declaration_utility_code(env)
1186 def may_be_none(self):
1189 def coerce_to(self, dst_type, env):
1190 if self.type is dst_type:
1192 node = ImagNode(self.pos, value=self.value)
1193 if dst_type.is_pyobject:
1195 node.type = PyrexTypes.py_object_type
1196 # We still need to perform normal coerce_to processing on the
1197 # result, because we might be coercing to an extension type,
1198 # in which case a type test node will be needed.
1199 return AtomicExprNode.coerce_to(node, dst_type, env)
1201 gil_message = "Constructing complex number"
1203 def calculate_result_code(self):
1204 if self.type.is_pyobject:
1205 return self.result()
1207 return "%s(0, %r)" % (self.type.from_parts, float(self.value))
1209 def generate_result_code(self, code):
1210 if self.type.is_pyobject:
1212 "%s = PyComplex_FromDoubles(0.0, %r); %s" % (
1215 code.error_goto_if_null(self.result(), self.pos)))
1216 code.put_gotref(self.py_result())
1219 class NewExprNode(AtomicExprNode):
1223 # cppclass node c++ class to create
1227 def infer_type(self, env):
1228 type = self.cppclass.analyse_as_type(env)
1229 if type is None or not type.is_cpp_class:
1230 error(self.pos, "new operator can only be applied to a C++ class")
1231 self.type = error_type
1234 constructor = type.scope.lookup(u'<init>')
1235 if constructor is None:
1236 return_type = PyrexTypes.CFuncType(type, [])
1237 return_type = PyrexTypes.CPtrType(return_type)
1238 type.scope.declare_cfunction(u'<init>', return_type, self.pos)
1239 constructor = type.scope.lookup(u'<init>')
1240 self.class_type = type
1241 self.entry = constructor
1242 self.type = constructor.type
1245 def analyse_types(self, env):
1246 if self.type is None:
1247 self.infer_type(env)
1249 def may_be_none(self):
1252 def generate_result_code(self, code):
1255 def calculate_result_code(self):
1256 return "new " + self.class_type.declaration_code("")
1259 class NameNode(AtomicExprNode):
1260 # Reference to a local or global variable name.
1262 # name string Python name of the variable
1263 # entry Entry Symbol table entry
1264 # type_entry Entry For extension type names, the original type entry
1267 is_cython_module = False
1268 cython_attribute = None
1269 lhs_of_first_assignment = False
1270 is_used_as_rvalue = 0
1274 def create_analysed_rvalue(pos, env, entry):
1275 node = NameNode(pos)
1276 node.analyse_types(env, entry=entry)
1279 def as_cython_attribute(self):
1280 return self.cython_attribute
1282 create_analysed_rvalue = staticmethod(create_analysed_rvalue)
1284 def type_dependencies(self, env):
1285 if self.entry is None:
1286 self.entry = env.lookup(self.name)
1287 if self.entry is not None and self.entry.type.is_unspecified:
1288 return (self.entry,)
1292 def infer_type(self, env):
1293 if self.entry is None:
1294 self.entry = env.lookup(self.name)
1295 if self.entry is None:
1296 return py_object_type
1297 elif (self.entry.type.is_extension_type or self.entry.type.is_builtin_type) and \
1298 self.name == self.entry.type.name:
1299 # Unfortunately the type attribute of type objects
1300 # is used for the pointer to the type they represent.
1303 return self.entry.type
1305 def compile_time_value(self, denv):
1307 return denv.lookup(self.name)
1309 error(self.pos, "Compile-time name '%s' not defined" % self.name)
1311 def get_constant_c_result_code(self):
1312 if not self.entry or self.entry.type.is_pyobject:
1314 return self.entry.cname
1316 def coerce_to(self, dst_type, env):
1317 # If coercing to a generic pyobject and this is a builtin
1318 # C function with a Python equivalent, manufacture a NameNode
1319 # referring to the Python builtin.
1320 #print "NameNode.coerce_to:", self.name, dst_type ###
1321 if dst_type is py_object_type:
1323 if entry and entry.is_cfunction:
1324 var_entry = entry.as_variable
1326 if var_entry.is_builtin and Options.cache_builtins:
1327 var_entry = env.declare_builtin(var_entry.name, self.pos)
1328 node = NameNode(self.pos, name = self.name)
1329 node.entry = var_entry
1330 node.analyse_rvalue_entry(env)
1332 return super(NameNode, self).coerce_to(dst_type, env)
1334 def analyse_as_module(self, env):
1335 # Try to interpret this as a reference to a cimported module.
1336 # Returns the module scope, or None.
1339 entry = env.lookup(self.name)
1340 if entry and entry.as_module:
1341 return entry.as_module
1344 def analyse_as_type(self, env):
1345 if self.cython_attribute:
1346 type = PyrexTypes.parse_basic_type(self.cython_attribute)
1348 type = PyrexTypes.parse_basic_type(self.name)
1353 entry = env.lookup(self.name)
1354 if entry and entry.is_type:
1359 def analyse_as_extension_type(self, env):
1360 # Try to interpret this as a reference to an extension type.
1361 # Returns the extension type, or None.
1364 entry = env.lookup(self.name)
1365 if entry and entry.is_type and entry.type.is_extension_type:
1370 def analyse_target_declaration(self, env):
1372 self.entry = env.lookup_here(self.name)
1374 if env.directives['warn.undeclared']:
1375 warning(self.pos, "implicit declaration of '%s'" % self.name, 1)
1376 if env.directives['infer_types'] != False:
1377 type = unspecified_type
1379 type = py_object_type
1380 self.entry = env.declare_var(self.name, type, self.pos)
1381 env.control_flow.set_state(self.pos, (self.name, 'initialized'), True)
1382 env.control_flow.set_state(self.pos, (self.name, 'source'), 'assignment')
1383 if self.entry.is_declared_generic:
1384 self.result_ctype = py_object_type
1386 def analyse_types(self, env):
1387 if self.entry is None:
1388 self.entry = env.lookup(self.name)
1390 self.entry = env.declare_builtin(self.name, self.pos)
1392 self.type = PyrexTypes.error_type
1397 if entry.type.is_buffer:
1399 Buffer.used_buffer_aux_vars(entry)
1400 if entry.utility_code:
1401 env.use_utility_code(entry.utility_code)
1402 self.analyse_rvalue_entry(env)
1404 def analyse_target_types(self, env):
1405 self.analyse_entry(env)
1406 if not self.is_lvalue():
1407 error(self.pos, "Assignment to non-lvalue '%s'"
1409 self.type = PyrexTypes.error_type
1411 if self.entry.type.is_buffer:
1413 Buffer.used_buffer_aux_vars(self.entry)
1415 def analyse_rvalue_entry(self, env):
1416 #print "NameNode.analyse_rvalue_entry:", self.name ###
1417 #print "Entry:", self.entry.__dict__ ###
1418 self.analyse_entry(env)
1420 if entry.is_declared_generic:
1421 self.result_ctype = py_object_type
1422 if entry.is_pyglobal or entry.is_builtin:
1423 if Options.cache_builtins and entry.is_builtin:
1427 env.use_utility_code(get_name_interned_utility_code)
1428 self.is_used_as_rvalue = 1
1430 def nogil_check(self, env):
1431 if self.is_used_as_rvalue:
1433 if entry.is_builtin:
1434 if not Options.cache_builtins: # cached builtins are ok
1436 elif entry.is_pyglobal:
1439 gil_message = "Accessing Python global or builtin"
1441 def analyse_entry(self, env):
1442 #print "NameNode.analyse_entry:", self.name ###
1443 self.check_identifier_kind()
1448 def check_identifier_kind(self):
1449 # Check that this is an appropriate kind of name for use in an
1450 # expression. Also finds the variable entry associated with
1451 # an extension type.
1453 if entry.is_type and entry.type.is_extension_type:
1454 self.type_entry = entry
1455 if not (entry.is_const or entry.is_variable
1456 or entry.is_builtin or entry.is_cfunction
1457 or entry.is_cpp_class):
1458 if self.entry.as_variable:
1459 self.entry = self.entry.as_variable
1462 "'%s' is not a constant, variable or function identifier" % self.name)
1464 def is_simple(self):
1465 # If it's not a C variable, it'll be in a temp.
1468 def calculate_target_results(self, env):
1471 def check_const(self):
1473 if entry is not None and not (entry.is_const or entry.is_cfunction or entry.is_builtin):
1478 def check_const_addr(self):
1480 if not (entry.is_cglobal or entry.is_cfunction or entry.is_builtin):
1481 self.addr_not_const()
1485 def is_lvalue(self):
1486 return self.entry.is_variable and \
1487 not self.entry.type.is_array and \
1488 not self.entry.is_readonly
1490 def is_ephemeral(self):
1491 # Name nodes are never ephemeral, even if the
1492 # result is in a temporary.
1495 def calculate_result_code(self):
1498 return "<error>" # There was an error earlier
1501 def generate_result_code(self, code):
1502 assert hasattr(self, 'entry')
1505 return # There was an error earlier
1506 if entry.is_builtin and Options.cache_builtins:
1507 return # Lookup already cached
1508 elif entry.is_pyclass_attr:
1509 assert entry.type.is_pyobject, "Python global or builtin not a Python object"
1510 interned_cname = code.intern_identifier(self.entry.name)
1511 if entry.is_builtin:
1512 namespace = Naming.builtins_cname
1513 else: # entry.is_pyglobal
1514 namespace = entry.scope.namespace_cname
1516 '%s = PyObject_GetItem(%s, %s); %s' % (
1520 code.error_goto_if_null(self.result(), self.pos)))
1521 code.put_gotref(self.py_result())
1523 elif entry.is_pyglobal or entry.is_builtin:
1524 assert entry.type.is_pyobject, "Python global or builtin not a Python object"
1525 interned_cname = code.intern_identifier(self.entry.name)
1526 if entry.is_builtin:
1527 namespace = Naming.builtins_cname
1528 else: # entry.is_pyglobal
1529 namespace = entry.scope.namespace_cname
1530 code.globalstate.use_utility_code(get_name_interned_utility_code)
1532 '%s = __Pyx_GetName(%s, %s); %s' % (
1536 code.error_goto_if_null(self.result(), self.pos)))
1537 code.put_gotref(self.py_result())
1539 elif entry.is_local and False:
1540 # control flow not good enough yet
1541 assigned = entry.scope.control_flow.get_state((entry.name, 'initialized'), self.pos)
1542 if assigned is False:
1543 error(self.pos, "local variable '%s' referenced before assignment" % entry.name)
1544 elif not Options.init_local_none and assigned is None:
1545 code.putln('if (%s == 0) { PyErr_SetString(PyExc_UnboundLocalError, "%s"); %s }' %
1546 (entry.cname, entry.name, code.error_goto(self.pos)))
1547 entry.scope.control_flow.set_state(self.pos, (entry.name, 'initialized'), True)
1549 def generate_assignment_code(self, rhs, code):
1550 #print "NameNode.generate_assignment_code:", self.name ###
1553 return # There was an error earlier
1555 if (self.entry.type.is_ptr and isinstance(rhs, ListNode)
1556 and not self.lhs_of_first_assignment):
1557 error(self.pos, "Literal list must be assigned to pointer at time of declaration")
1559 # is_pyglobal seems to be True for module level-globals only.
1560 # We use this to access class->tp_dict if necessary.
1561 if entry.is_pyglobal:
1562 assert entry.type.is_pyobject, "Python global or builtin not a Python object"
1563 interned_cname = code.intern_identifier(self.entry.name)
1564 namespace = self.entry.scope.namespace_cname
1566 # if the entry is a member we have to cheat: SetAttr does not work
1567 # on types, so we create a descriptor which is then added to tp_dict
1568 code.put_error_if_neg(self.pos,
1569 'PyDict_SetItem(%s->tp_dict, %s, %s)' % (
1573 rhs.generate_disposal_code(code)
1574 rhs.free_temps(code)
1575 # in Py2.6+, we need to invalidate the method cache
1576 code.putln("PyType_Modified(%s);" %
1577 entry.scope.parent_type.typeptr_cname)
1578 elif entry.is_pyclass_attr:
1579 code.put_error_if_neg(self.pos,
1580 'PyObject_SetItem(%s, %s, %s)' % (
1584 rhs.generate_disposal_code(code)
1585 rhs.free_temps(code)
1587 code.put_error_if_neg(self.pos,
1588 'PyObject_SetAttr(%s, %s, %s)' % (
1592 if debug_disposal_code:
1593 print("NameNode.generate_assignment_code:")
1594 print("...generating disposal code for %s" % rhs)
1595 rhs.generate_disposal_code(code)
1596 rhs.free_temps(code)
1598 if self.type.is_buffer:
1599 # Generate code for doing the buffer release/acquisition.
1600 # This might raise an exception in which case the assignment (done
1601 # below) will not happen.
1603 # The reason this is not in a typetest-like node is because the
1604 # variables that the acquired buffer info is stored to is allocated
1605 # per entry and coupled with it.
1606 self.generate_acquire_buffer(rhs, code)
1608 if self.type.is_pyobject:
1609 #print "NameNode.generate_assignment_code: to", self.name ###
1610 #print "...from", rhs ###
1611 #print "...LHS type", self.type, "ctype", self.ctype() ###
1612 #print "...RHS type", rhs.type, "ctype", rhs.ctype() ###
1613 if self.use_managed_ref:
1614 rhs.make_owned_reference(code)
1615 if entry.is_cglobal:
1616 code.put_gotref(self.py_result())
1617 if not self.lhs_of_first_assignment:
1618 if entry.is_local and not Options.init_local_none:
1619 initialized = entry.scope.control_flow.get_state((entry.name, 'initialized'), self.pos)
1620 if initialized is True:
1621 code.put_decref(self.result(), self.ctype())
1622 elif initialized is None:
1623 code.put_xdecref(self.result(), self.ctype())
1625 code.put_decref(self.result(), self.ctype())
1626 if entry.is_cglobal:
1627 code.put_giveref(rhs.py_result())
1629 code.putln('%s = %s;' % (self.result(),
1630 rhs.result_as(self.ctype())))
1631 if debug_disposal_code:
1632 print("NameNode.generate_assignment_code:")
1633 print("...generating post-assignment code for %s" % rhs)
1634 rhs.generate_post_assignment_code(code)
1635 rhs.free_temps(code)
1637 def generate_acquire_buffer(self, rhs, code):
1638 # rhstmp is only used in case the rhs is a complicated expression leading to
1639 # the object, to avoid repeating the same C expression for every reference
1640 # to the rhs. It does NOT hold a reference.
1641 pretty_rhs = isinstance(rhs, NameNode) or rhs.is_temp
1643 rhstmp = rhs.result_as(self.ctype())
1645 rhstmp = code.funcstate.allocate_temp(self.entry.type, manage_ref=False)
1646 code.putln('%s = %s;' % (rhstmp, rhs.result_as(self.ctype())))
1648 buffer_aux = self.entry.buffer_aux
1649 bufstruct = buffer_aux.buffer_info_var.cname
1651 Buffer.put_assign_to_buffer(self.result(), rhstmp, buffer_aux, self.entry.type,
1652 is_initialized=not self.lhs_of_first_assignment,
1653 pos=self.pos, code=code)
1656 code.putln("%s = 0;" % rhstmp)
1657 code.funcstate.release_temp(rhstmp)
1659 def generate_deletion_code(self, code):
1660 if self.entry is None:
1661 return # There was an error earlier
1662 if not self.entry.is_pyglobal:
1663 error(self.pos, "Deletion of local or C global name not supported")
1665 if self.entry.is_pyclass_attr:
1666 namespace = self.entry.scope.namespace_cname
1667 code.put_error_if_neg(self.pos,
1668 'PyMapping_DelItemString(%s, "%s")' % (
1672 code.put_error_if_neg(self.pos,
1673 '__Pyx_DelAttrString(%s, "%s")' % (
1674 Naming.module_cname,
1677 def annotate(self, code):
1678 if hasattr(self, 'is_called') and self.is_called:
1679 pos = (self.pos[0], self.pos[1], self.pos[2] - len(self.name) - 1)
1680 if self.type.is_pyobject:
1681 code.annotate(pos, AnnotationItem('py_call', 'python function', size=len(self.name)))
1683 code.annotate(pos, AnnotationItem('c_call', 'c function', size=len(self.name)))
1685 class BackquoteNode(ExprNode):
1690 type = py_object_type
1694 def analyse_types(self, env):
1695 self.arg.analyse_types(env)
1696 self.arg = self.arg.coerce_to_pyobject(env)
1699 gil_message = "Backquote expression"
1701 def calculate_constant_result(self):
1702 self.constant_result = repr(self.arg.constant_result)
1704 def generate_result_code(self, code):
1706 "%s = PyObject_Repr(%s); %s" % (
1708 self.arg.py_result(),
1709 code.error_goto_if_null(self.result(), self.pos)))
1710 code.put_gotref(self.py_result())
1714 class ImportNode(ExprNode):
1715 # Used as part of import statement implementation.
1716 # Implements result =
1717 # __import__(module_name, globals(), None, name_list)
1719 # module_name StringNode dotted name of module
1720 # name_list ListNode or None list of names to be imported
1722 type = py_object_type
1724 subexprs = ['module_name', 'name_list']
1726 def analyse_types(self, env):
1727 self.module_name.analyse_types(env)
1728 self.module_name = self.module_name.coerce_to_pyobject(env)
1730 self.name_list.analyse_types(env)
1731 self.name_list.coerce_to_pyobject(env)
1733 env.use_utility_code(import_utility_code)
1735 gil_message = "Python import"
1737 def generate_result_code(self, code):
1739 name_list_code = self.name_list.py_result()
1741 name_list_code = "0"
1743 "%s = __Pyx_Import(%s, %s); %s" % (
1745 self.module_name.py_result(),
1747 code.error_goto_if_null(self.result(), self.pos)))
1748 code.put_gotref(self.py_result())
1751 class IteratorNode(ExprNode):
1752 # Used as part of for statement implementation.
1754 # allocate_counter_temp/release_counter_temp needs to be called
1755 # by parent (ForInStatNode)
1757 # Implements result = iter(sequence)
1761 type = py_object_type
1763 subexprs = ['sequence']
1765 def analyse_types(self, env):
1766 self.sequence.analyse_types(env)
1767 if (self.sequence.type.is_array or self.sequence.type.is_ptr) and \
1768 not self.sequence.type.is_string:
1769 # C array iteration will be transformed later on
1770 self.type = self.sequence.type
1772 self.sequence = self.sequence.coerce_to_pyobject(env)
1773 if self.sequence.type is list_type or \
1774 self.sequence.type is tuple_type:
1775 self.sequence = self.sequence.as_none_safe_node("'NoneType' object is not iterable")
1778 gil_message = "Iterating over Python object"
1780 def allocate_counter_temp(self, code):
1781 self.counter_cname = code.funcstate.allocate_temp(
1782 PyrexTypes.c_py_ssize_t_type, manage_ref=False)
1784 def release_counter_temp(self, code):
1785 code.funcstate.release_temp(self.counter_cname)
1787 def generate_result_code(self, code):
1788 if self.sequence.type.is_array or self.sequence.type.is_ptr:
1789 raise InternalError("for in carray slice not transformed")
1790 is_builtin_sequence = self.sequence.type is list_type or \
1791 self.sequence.type is tuple_type
1792 may_be_a_sequence = not self.sequence.type.is_builtin_type
1793 if may_be_a_sequence:
1795 "if (PyList_CheckExact(%s) || PyTuple_CheckExact(%s)) {" % (
1796 self.sequence.py_result(),
1797 self.sequence.py_result()))
1798 if is_builtin_sequence or may_be_a_sequence:
1800 "%s = 0; %s = %s; __Pyx_INCREF(%s);" % (
1803 self.sequence.py_result(),
1805 if not is_builtin_sequence:
1806 if may_be_a_sequence:
1807 code.putln("} else {")
1808 code.putln("%s = -1; %s = PyObject_GetIter(%s); %s" % (
1811 self.sequence.py_result(),
1812 code.error_goto_if_null(self.result(), self.pos)))
1813 code.put_gotref(self.py_result())
1814 if may_be_a_sequence:
1818 class NextNode(AtomicExprNode):
1819 # Used as part of for statement implementation.
1820 # Implements result = iterator.next()
1821 # Created during analyse_types phase.
1822 # The iterator is not owned by this node.
1826 type = py_object_type
1828 def __init__(self, iterator, env):
1829 self.pos = iterator.pos
1830 self.iterator = iterator
1831 if iterator.type.is_ptr or iterator.type.is_array:
1832 self.type = iterator.type.base_type
1835 def generate_result_code(self, code):
1836 sequence_type = self.iterator.sequence.type
1837 if sequence_type is list_type:
1838 type_checks = [(list_type, "List")]
1839 elif sequence_type is tuple_type:
1840 type_checks = [(tuple_type, "Tuple")]
1841 elif not sequence_type.is_builtin_type:
1842 type_checks = [(list_type, "List"), (tuple_type, "Tuple")]
1846 for py_type, prefix in type_checks:
1847 if len(type_checks) > 1:
1849 "if (likely(Py%s_CheckExact(%s))) {" % (
1850 prefix, self.iterator.py_result()))
1852 "if (%s >= Py%s_GET_SIZE(%s)) break;" % (
1853 self.iterator.counter_cname,
1855 self.iterator.py_result()))
1857 "%s = Py%s_GET_ITEM(%s, %s); __Pyx_INCREF(%s); %s++;" % (
1860 self.iterator.py_result(),
1861 self.iterator.counter_cname,
1863 self.iterator.counter_cname))
1864 if len(type_checks) > 1:
1866 if len(type_checks) == 1:
1870 "%s = PyIter_Next(%s);" % (
1872 self.iterator.py_result()))
1876 code.putln(code.error_goto_if_PyErr(self.pos))
1877 code.putln("break;")
1879 code.put_gotref(self.py_result())
1883 class ExcValueNode(AtomicExprNode):
1884 # Node created during analyse_types phase
1885 # of an ExceptClauseNode to fetch the current
1888 type = py_object_type
1890 def __init__(self, pos, env):
1891 ExprNode.__init__(self, pos)
1893 def set_var(self, var):
1896 def calculate_result_code(self):
1899 def generate_result_code(self, code):
1902 def analyse_types(self, env):
1906 class TempNode(ExprNode):
1907 # Node created during analyse_types phase
1908 # of some nodes to hold a temporary value.
1910 # Note: One must call "allocate" and "release" on
1911 # the node during code generation to get/release the temp.
1912 # This is because the temp result is often used outside of
1913 # the regular cycle.
1917 def __init__(self, pos, type, env):
1918 ExprNode.__init__(self, pos)
1920 if type.is_pyobject:
1921 self.result_ctype = py_object_type
1924 def analyse_types(self, env):
1927 def generate_result_code(self, code):
1930 def allocate(self, code):
1931 self.temp_cname = code.funcstate.allocate_temp(self.type, manage_ref=True)
1933 def release(self, code):
1934 code.funcstate.release_temp(self.temp_cname)
1935 self.temp_cname = None
1939 return self.temp_cname
1941 assert False, "Remember to call allocate/release on TempNode"
1944 # Do not participate in normal temp alloc/dealloc:
1945 def allocate_temp_result(self, code):
1948 def release_temp_result(self, code):
1951 class PyTempNode(TempNode):
1952 # TempNode holding a Python value.
1954 def __init__(self, pos, env):
1955 TempNode.__init__(self, pos, PyrexTypes.py_object_type, env)
1957 class RawCNameExprNode(ExprNode):
1960 def __init__(self, pos, type=None):
1964 def analyse_types(self, env):
1967 def set_cname(self, cname):
1973 def generate_result_code(self, code):
1977 #-------------------------------------------------------------------
1981 #-------------------------------------------------------------------
1983 class IndexNode(ExprNode):
1984 # Sequence indexing.
1988 # indices [ExprNode]
1989 # is_buffer_access boolean Whether this is a buffer access.
1991 # indices is used on buffer access, index on non-buffer access.
1992 # The former contains a clean list of index parameters, the
1993 # latter whatever Python object is needed for index access.
1995 subexprs = ['base', 'index', 'indices']
1998 def __init__(self, pos, index, *args, **kw):
1999 ExprNode.__init__(self, pos, index=index, *args, **kw)
2002 def calculate_constant_result(self):
2003 self.constant_result = \
2004 self.base.constant_result[self.index.constant_result]
2006 def compile_time_value(self, denv):
2007 base = self.base.compile_time_value(denv)
2008 index = self.index.compile_time_value(denv)
2011 except Exception, e:
2012 self.compile_time_value_error(e)
2014 def is_ephemeral(self):
2015 return self.base.is_ephemeral()
2017 def analyse_target_declaration(self, env):
2020 def analyse_as_type(self, env):
2021 base_type = self.base.analyse_as_type(env)
2022 if base_type and not base_type.is_pyobject:
2023 if base_type.is_cpp_class:
2024 if isinstance(self.index, TupleNode):
2025 template_values = self.index.args
2027 template_values = [self.index]
2029 type_node = Nodes.TemplatedTypeNode(
2031 positional_args = template_values,
2032 keyword_args = None)
2033 return type_node.analyse(env, base_type = base_type)
2035 return PyrexTypes.CArrayType(base_type, int(self.index.compile_time_value(env)))
2038 def type_dependencies(self, env):
2039 return self.base.type_dependencies(env)
2041 def infer_type(self, env):
2042 base_type = self.base.infer_type(env)
2043 if isinstance(self.index, SliceNode):
2045 if base_type.is_string:
2046 # sliced C strings must coerce to Python
2048 elif base_type in (unicode_type, bytes_type, str_type, list_type, tuple_type):
2049 # slicing these returns the same type
2052 # TODO: Handle buffers (hopefully without too much redundancy).
2053 return py_object_type
2055 index_type = self.index.infer_type(env)
2056 if index_type and index_type.is_int or isinstance(self.index, (IntNode, LongNode)):
2058 if base_type is unicode_type:
2059 # Py_UNICODE will automatically coerce to a unicode string
2060 # if required, so this is safe. We only infer Py_UNICODE
2061 # when the index is a C integer type. Otherwise, we may
2062 # need to use normal Python item access, in which case
2063 # it's faster to return the one-char unicode string than
2064 # to receive it, throw it away, and potentially rebuild it
2065 # on a subsequent PyObject coercion.
2066 return PyrexTypes.c_py_unicode_type
2067 elif isinstance(self.base, BytesNode):
2068 #if env.global_scope().context.language_level >= 3:
2069 # # infering 'char' can be made to work in Python 3 mode
2070 # return PyrexTypes.c_char_type
2071 # Py2/3 return different types on indexing bytes objects
2072 return py_object_type
2073 elif base_type.is_ptr or base_type.is_array:
2074 return base_type.base_type
2076 # may be slicing or indexing, we don't know
2077 if base_type is unicode_type:
2078 # this type always returns its own type on Python indexing/slicing
2081 # TODO: Handle buffers (hopefully without too much redundancy).
2082 return py_object_type
2084 def analyse_types(self, env):
2085 self.analyse_base_and_index_types(env, getting = 1)
2087 def analyse_target_types(self, env):
2088 self.analyse_base_and_index_types(env, setting = 1)
2090 def analyse_base_and_index_types(self, env, getting = 0, setting = 0):
2091 # Note: This might be cleaned up by having IndexNode
2092 # parsed in a saner way and only construct the tuple if
2095 # Note that this function must leave IndexNode in a cloneable state.
2096 # For buffers, self.index is packed out on the initial analysis, and
2097 # when cloning self.indices is copied.
2098 self.is_buffer_access = False
2100 self.base.analyse_types(env)
2101 if self.base.type.is_error:
2102 # Do not visit child tree if base is undeclared to avoid confusing
2104 self.type = PyrexTypes.error_type
2107 is_slice = isinstance(self.index, SliceNode)
2108 # Potentially overflowing index value.
2109 if not is_slice and isinstance(self.index, IntNode) and Utils.long_literal(self.index.value):
2110 self.index = self.index.coerce_to_pyobject(env)
2112 # Handle the case where base is a literal char* (and we expect a string, not an int)
2113 if isinstance(self.base, BytesNode) or is_slice:
2114 if self.base.type.is_string or not (self.base.type.is_ptr or self.base.type.is_array):
2115 self.base = self.base.coerce_to_pyobject(env)
2117 skip_child_analysis = False
2118 buffer_access = False
2119 if self.base.type.is_buffer:
2121 indices = self.indices
2123 if isinstance(self.index, TupleNode):
2124 indices = self.index.args
2126 indices = [self.index]
2127 if len(indices) == self.base.type.ndim:
2128 buffer_access = True
2129 skip_child_analysis = True
2131 x.analyse_types(env)
2132 if not x.type.is_int:
2133 buffer_access = False
2135 assert hasattr(self.base, "entry") # Must be a NameNode-like node
2137 # On cloning, indices is cloned. Otherwise, unpack index into indices
2138 assert not (buffer_access and isinstance(self.index, CloneNode))
2141 self.indices = indices
2143 self.type = self.base.type.dtype
2144 self.is_buffer_access = True
2145 self.buffer_type = self.base.entry.type
2147 if getting and self.type.is_pyobject:
2150 if not self.base.entry.type.writable:
2151 error(self.pos, "Writing to readonly buffer")
2153 self.base.entry.buffer_aux.writable_needed = True
2155 base_type = self.base.type
2156 if isinstance(self.index, TupleNode):
2157 self.index.analyse_types(env, skip_children=skip_child_analysis)
2158 elif not skip_child_analysis:
2159 self.index.analyse_types(env)
2160 self.original_index_type = self.index.type
2161 if base_type is PyrexTypes.c_py_unicode_type:
2162 # we infer Py_UNICODE for unicode strings in some
2163 # cases, but indexing must still work for them
2164 if self.index.constant_result in (0, -1):
2165 # FIXME: we know that this node is redundant -
2166 # currently, this needs to get handled in Optimize.py
2168 self.base = self.base.coerce_to_pyobject(env)
2169 base_type = self.base.type
2170 if base_type.is_pyobject:
2171 if self.index.type.is_int:
2173 and (base_type in (list_type, tuple_type, unicode_type))
2174 and (not self.index.type.signed or isinstance(self.index, IntNode) and int(self.index.value) >= 0)
2175 and not env.directives['boundscheck']):
2179 self.index = self.index.coerce_to(PyrexTypes.c_py_ssize_t_type, env).coerce_to_simple(env)
2181 self.index = self.index.coerce_to_pyobject(env)
2183 if self.index.type.is_int and base_type is unicode_type:
2184 # Py_UNICODE will automatically coerce to a unicode string
2185 # if required, so this is fast and safe
2186 self.type = PyrexTypes.c_py_unicode_type
2187 elif is_slice and base_type in (bytes_type, str_type, unicode_type, list_type, tuple_type):
2188 self.type = base_type
2190 self.type = py_object_type
2192 if base_type.is_ptr or base_type.is_array:
2193 self.type = base_type.base_type
2195 self.type = base_type
2196 elif self.index.type.is_pyobject:
2197 self.index = self.index.coerce_to(
2198 PyrexTypes.c_py_ssize_t_type, env)
2199 elif not self.index.type.is_int:
2201 "Invalid index type '%s'" %
2203 elif base_type.is_cpp_class:
2204 function = env.lookup_operator("[]", [self.base, self.index])
2205 if function is None:
2206 error(self.pos, "Indexing '%s' not supported for index type '%s'" % (base_type, self.index.type))
2207 self.type = PyrexTypes.error_type
2208 self.result_code = "<error>"
2210 func_type = function.type
2211 if func_type.is_ptr:
2212 func_type = func_type.base_type
2213 self.index = self.index.coerce_to(func_type.args[0].type, env)
2214 self.type = func_type.return_type
2215 if setting and not func_type.return_type.is_reference:
2216 error(self.pos, "Can't set non-reference result '%s'" % self.type)
2219 "Attempting to index non-array type '%s'" %
2221 self.type = PyrexTypes.error_type
2223 gil_message = "Indexing Python object"
2225 def nogil_check(self, env):
2226 if self.is_buffer_access:
2227 if env.directives['boundscheck']:
2228 error(self.pos, "Cannot check buffer index bounds without gil; use boundscheck(False) directive")
2230 elif self.type.is_pyobject:
2231 error(self.pos, "Cannot access buffer with object dtype without gil")
2233 super(IndexNode, self).nogil_check(env)
2236 def check_const_addr(self):
2237 return self.base.check_const_addr() and self.index.check_const()
2239 def is_lvalue(self):
2242 def calculate_result_code(self):
2243 if self.is_buffer_access:
2244 return "(*%s)" % self.buffer_ptr_code
2245 elif self.base.type is list_type:
2246 return "PyList_GET_ITEM(%s, %s)" % (self.base.result(), self.index.result())
2247 elif self.base.type is tuple_type:
2248 return "PyTuple_GET_ITEM(%s, %s)" % (self.base.result(), self.index.result())
2249 elif self.base.type is unicode_type and self.type is PyrexTypes.c_py_unicode_type:
2250 return "PyUnicode_AS_UNICODE(%s)[%s]" % (self.base.result(), self.index.result())
2251 elif (self.type.is_ptr or self.type.is_array) and self.type == self.base.type:
2252 error(self.pos, "Invalid use of pointer slice")
2254 return "(%s[%s])" % (
2255 self.base.result(), self.index.result())
2257 def extra_index_params(self):
2258 if self.index.type.is_int:
2259 if self.original_index_type.signed:
2260 size_adjustment = ""
2262 size_adjustment = "+1"
2263 return ", sizeof(%s)%s, %s" % (self.original_index_type.declaration_code(""), size_adjustment, self.original_index_type.to_py_function)
2267 def generate_subexpr_evaluation_code(self, code):
2268 self.base.generate_evaluation_code(code)
2269 if not self.indices:
2270 self.index.generate_evaluation_code(code)
2272 for i in self.indices:
2273 i.generate_evaluation_code(code)
2275 def generate_subexpr_disposal_code(self, code):
2276 self.base.generate_disposal_code(code)
2277 if not self.indices:
2278 self.index.generate_disposal_code(code)
2280 for i in self.indices:
2281 i.generate_disposal_code(code)
2283 def free_subexpr_temps(self, code):
2284 self.base.free_temps(code)
2285 if not self.indices:
2286 self.index.free_temps(code)
2288 for i in self.indices:
2291 def generate_result_code(self, code):
2292 if self.is_buffer_access:
2293 if code.globalstate.directives['nonecheck']:
2294 self.put_nonecheck(code)
2295 self.buffer_ptr_code = self.buffer_lookup_code(code)
2296 if self.type.is_pyobject:
2297 # is_temp is True, so must pull out value and incref it.
2298 code.putln("%s = *%s;" % (self.result(), self.buffer_ptr_code))
2299 code.putln("__Pyx_INCREF((PyObject*)%s);" % self.result())
2301 if self.type.is_pyobject:
2302 if self.index.type.is_int:
2303 index_code = self.index.result()
2304 if self.base.type is list_type:
2305 function = "__Pyx_GetItemInt_List"
2306 elif self.base.type is tuple_type:
2307 function = "__Pyx_GetItemInt_Tuple"
2309 function = "__Pyx_GetItemInt"
2310 code.globalstate.use_utility_code(getitem_int_utility_code)
2312 index_code = self.index.py_result()
2313 if self.base.type is dict_type:
2314 function = "__Pyx_PyDict_GetItem"
2315 code.globalstate.use_utility_code(getitem_dict_utility_code)
2317 function = "PyObject_GetItem"
2319 "%s = %s(%s, %s%s); if (!%s) %s" % (
2322 self.base.py_result(),
2324 self.extra_index_params(),
2326 code.error_goto(self.pos)))
2327 code.put_gotref(self.py_result())
2328 elif self.type is PyrexTypes.c_py_unicode_type and self.base.type is unicode_type:
2329 assert self.index.type.is_int
2330 index_code = self.index.result()
2331 function = "__Pyx_GetItemInt_Unicode"
2332 code.globalstate.use_utility_code(getitem_int_pyunicode_utility_code)
2334 "%s = %s(%s, %s%s); if (unlikely(%s == (Py_UNICODE)-1)) %s;" % (
2337 self.base.py_result(),
2339 self.extra_index_params(),
2341 code.error_goto(self.pos)))
2343 def generate_setitem_code(self, value_code, code):
2344 if self.index.type.is_int:
2345 function = "__Pyx_SetItemInt"
2346 index_code = self.index.result()
2347 code.globalstate.use_utility_code(setitem_int_utility_code)
2349 index_code = self.index.py_result()
2350 if self.base.type is dict_type:
2351 function = "PyDict_SetItem"
2352 # It would seem that we could specialized lists/tuples, but that
2353 # shouldn't happen here.
2354 # Both PyList_SetItem PyTuple_SetItem and a Py_ssize_t as input,
2355 # not a PyObject*, and bad conversion here would give the wrong
2356 # exception. Also, tuples are supposed to be immutable, and raise
2357 # TypeErrors when trying to set their entries (PyTuple_SetItem
2358 # is for creating new tuples from).
2360 function = "PyObject_SetItem"
2362 "if (%s(%s, %s, %s%s) < 0) %s" % (
2364 self.base.py_result(),
2367 self.extra_index_params(),
2368 code.error_goto(self.pos)))
2370 def generate_buffer_setitem_code(self, rhs, code, op=""):
2371 # Used from generate_assignment_code and InPlaceAssignmentNode
2372 if code.globalstate.directives['nonecheck']:
2373 self.put_nonecheck(code)
2374 ptrexpr = self.buffer_lookup_code(code)
2375 if self.buffer_type.dtype.is_pyobject:
2376 # Must manage refcounts. Decref what is already there
2377 # and incref what we put in.
2378 ptr = code.funcstate.allocate_temp(self.buffer_type.buffer_ptr_type, manage_ref=False)
2379 rhs_code = rhs.result()
2380 code.putln("%s = %s;" % (ptr, ptrexpr))
2381 code.put_gotref("*%s" % ptr)
2382 code.putln("__Pyx_DECREF(*%s); __Pyx_INCREF(%s);" % (
2385 code.putln("*%s %s= %s;" % (ptr, op, rhs_code))
2386 code.put_giveref("*%s" % ptr)
2387 code.funcstate.release_temp(ptr)
2390 code.putln("*%s %s= %s;" % (ptrexpr, op, rhs.result()))
2392 def generate_assignment_code(self, rhs, code):
2393 self.generate_subexpr_evaluation_code(code)
2394 if self.is_buffer_access:
2395 self.generate_buffer_setitem_code(rhs, code)
2396 elif self.type.is_pyobject:
2397 self.generate_setitem_code(rhs.py_result(), code)
2401 self.result(), rhs.result()))
2402 self.generate_subexpr_disposal_code(code)
2403 self.free_subexpr_temps(code)
2404 rhs.generate_disposal_code(code)
2405 rhs.free_temps(code)
2407 def generate_deletion_code(self, code):
2408 self.generate_subexpr_evaluation_code(code)
2409 #if self.type.is_pyobject:
2410 if self.index.type.is_int:
2411 function = "__Pyx_DelItemInt"
2412 index_code = self.index.result()
2413 code.globalstate.use_utility_code(delitem_int_utility_code)
2415 index_code = self.index.py_result()
2416 if self.base.type is dict_type:
2417 function = "PyDict_DelItem"
2419 function = "PyObject_DelItem"
2421 "if (%s(%s, %s%s) < 0) %s" % (
2423 self.base.py_result(),
2425 self.extra_index_params(),
2426 code.error_goto(self.pos)))
2427 self.generate_subexpr_disposal_code(code)
2428 self.free_subexpr_temps(code)
2430 def buffer_lookup_code(self, code):
2431 # Assign indices to temps
2432 index_temps = [code.funcstate.allocate_temp(i.type, manage_ref=False) for i in self.indices]
2433 for temp, index in zip(index_temps, self.indices):
2434 code.putln("%s = %s;" % (temp, index.result()))
2435 # Generate buffer access code using these temps
2437 # The above could happen because child_attrs is wrong somewhere so that
2438 # options are not propagated.
2439 return Buffer.put_buffer_lookup_code(entry=self.base.entry,
2440 index_signeds=[i.type.signed for i in self.indices],
2441 index_cnames=index_temps,
2442 directives=code.globalstate.directives,
2443 pos=self.pos, code=code)
2445 def put_nonecheck(self, code):
2446 code.globalstate.use_utility_code(raise_noneindex_error_utility_code)
2447 code.putln("if (%s) {" % code.unlikely("%s == Py_None") % self.base.result_as(PyrexTypes.py_object_type))
2448 code.putln("__Pyx_RaiseNoneIndexingError();")
2449 code.putln(code.error_goto(self.pos))
2452 class SliceIndexNode(ExprNode):
2453 # 2-element slice indexing
2456 # start ExprNode or None
2457 # stop ExprNode or None
2459 subexprs = ['base', 'start', 'stop']
2461 def infer_type(self, env):
2462 base_type = self.base.infer_type(env)
2463 if base_type.is_string:
2465 elif base_type in (bytes_type, str_type, unicode_type,
2466 list_type, tuple_type):
2468 return py_object_type
2470 def calculate_constant_result(self):
2471 self.constant_result = self.base.constant_result[
2472 self.start.constant_result : self.stop.constant_result]
2474 def compile_time_value(self, denv):
2475 base = self.base.compile_time_value(denv)
2476 if self.start is None:
2479 start = self.start.compile_time_value(denv)
2480 if self.stop is None:
2483 stop = self.stop.compile_time_value(denv)
2485 return base[start:stop]
2486 except Exception, e:
2487 self.compile_time_value_error(e)
2489 def analyse_target_declaration(self, env):
2492 def analyse_target_types(self, env):
2493 self.analyse_types(env)
2494 # when assigning, we must accept any Python type
2495 if self.type.is_pyobject:
2496 self.type = py_object_type
2498 def analyse_types(self, env):
2499 self.base.analyse_types(env)
2501 self.start.analyse_types(env)
2503 self.stop.analyse_types(env)
2504 base_type = self.base.type
2505 if base_type.is_string:
2506 self.type = bytes_type
2507 elif base_type.is_ptr:
2508 self.type = base_type
2509 elif base_type.is_array:
2510 # we need a ptr type here instead of an array type, as
2511 # array types can result in invalid type casts in the C
2513 self.type = PyrexTypes.CPtrType(base_type.base_type)
2515 self.base = self.base.coerce_to_pyobject(env)
2516 self.type = py_object_type
2517 if base_type.is_builtin_type:
2518 # slicing builtin types returns something of the same type
2519 self.type = base_type
2520 c_int = PyrexTypes.c_py_ssize_t_type
2522 self.start = self.start.coerce_to(c_int, env)
2524 self.stop = self.stop.coerce_to(c_int, env)
2527 nogil_check = Node.gil_error
2528 gil_message = "Slicing Python object"
2530 def generate_result_code(self, code):
2531 if not self.type.is_pyobject:
2533 "Slicing is not currently supported for '%s'." % self.type)
2535 if self.base.type.is_string:
2536 if self.stop is None:
2538 "%s = PyBytes_FromString(%s + %s); %s" % (
2542 code.error_goto_if_null(self.result(), self.pos)))
2545 "%s = PyBytes_FromStringAndSize(%s + %s, %s - %s); %s" % (
2551 code.error_goto_if_null(self.result(), self.pos)))
2554 "%s = __Pyx_PySequence_GetSlice(%s, %s, %s); %s" % (
2556 self.base.py_result(),
2559 code.error_goto_if_null(self.result(), self.pos)))
2560 code.put_gotref(self.py_result())
2562 def generate_assignment_code(self, rhs, code):
2563 self.generate_subexpr_evaluation_code(code)
2564 if self.type.is_pyobject:
2565 code.put_error_if_neg(self.pos,
2566 "__Pyx_PySequence_SetSlice(%s, %s, %s, %s)" % (
2567 self.base.py_result(),
2574 start_offset = self.start_code()
2575 if start_offset == '0':
2579 if rhs.type.is_array:
2580 array_length = rhs.type.size
2581 self.generate_slice_guard_code(code, array_length)
2584 "Slice assignments from pointers are not yet supported.")
2585 # FIXME: fix the array size according to start/stop
2586 array_length = self.base.type.size
2587 for i in range(array_length):
2588 code.putln("%s[%s%s] = %s[%d];" % (
2589 self.base.result(), start_offset, i,
2591 self.generate_subexpr_disposal_code(code)
2592 self.free_subexpr_temps(code)
2593 rhs.generate_disposal_code(code)
2594 rhs.free_temps(code)
2596 def generate_deletion_code(self, code):
2597 if not self.base.type.is_pyobject:
2599 "Deleting slices is only supported for Python types, not '%s'." % self.type)
2601 self.generate_subexpr_evaluation_code(code)
2602 code.put_error_if_neg(self.pos,
2603 "__Pyx_PySequence_DelSlice(%s, %s, %s)" % (
2604 self.base.py_result(),
2607 self.generate_subexpr_disposal_code(code)
2608 self.free_subexpr_temps(code)
2610 def generate_slice_guard_code(self, code, target_size):
2611 if not self.base.type.is_array:
2613 slice_size = self.base.type.size
2616 stop = self.stop.result()
2620 slice_size = self.base.type.size + stop
2627 start = self.start.result()
2631 start = self.base.type.size + start
2639 error(self.pos, "Assignment to empty slice.")
2640 elif start is None and stop is None:
2641 # we know the exact slice length
2642 if target_size != slice_size:
2643 error(self.pos, "Assignment to slice of wrong length, expected %d, got %d" % (
2644 slice_size, target_size))
2645 elif start is not None:
2648 check = "(%s)-(%s)" % (stop, start)
2649 else: # stop is not None:
2652 code.putln("if (unlikely((%s) != %d)) {" % (check, target_size))
2653 code.putln('PyErr_Format(PyExc_ValueError, "Assignment to slice of wrong length, expected %%"PY_FORMAT_SIZE_T"d, got %%"PY_FORMAT_SIZE_T"d", (Py_ssize_t)%d, (Py_ssize_t)(%s));' % (
2654 target_size, check))
2655 code.putln(code.error_goto(self.pos))
2658 def start_code(self):
2660 return self.start.result()
2664 def stop_code(self):
2666 return self.stop.result()
2667 elif self.base.type.is_array:
2668 return self.base.type.size
2670 return "PY_SSIZE_T_MAX"
2672 def calculate_result_code(self):
2673 # self.result() is not used, but this method must exist
2677 class SliceNode(ExprNode):
2678 # start:stop:step in subscript list
2684 type = py_object_type
2687 def calculate_constant_result(self):
2688 self.constant_result = self.base.constant_result[
2689 self.start.constant_result : \
2690 self.stop.constant_result : \
2691 self.step.constant_result]
2693 def compile_time_value(self, denv):
2694 start = self.start.compile_time_value(denv)
2695 if self.stop is None:
2698 stop = self.stop.compile_time_value(denv)
2699 if self.step is None:
2702 step = self.step.compile_time_value(denv)
2704 return slice(start, stop, step)
2705 except Exception, e:
2706 self.compile_time_value_error(e)
2708 subexprs = ['start', 'stop', 'step']
2710 def analyse_types(self, env):
2711 self.start.analyse_types(env)
2712 self.stop.analyse_types(env)
2713 self.step.analyse_types(env)
2714 self.start = self.start.coerce_to_pyobject(env)
2715 self.stop = self.stop.coerce_to_pyobject(env)
2716 self.step = self.step.coerce_to_pyobject(env)
2718 gil_message = "Constructing Python slice object"
2720 def generate_result_code(self, code):
2722 "%s = PySlice_New(%s, %s, %s); %s" % (
2724 self.start.py_result(),
2725 self.stop.py_result(),
2726 self.step.py_result(),
2727 code.error_goto_if_null(self.result(), self.pos)))
2728 code.put_gotref(self.py_result())
2731 class CallNode(ExprNode):
2733 # allow overriding the default 'may_be_none' behaviour
2734 may_return_none = None
2736 def may_be_none(self):
2737 if self.may_return_none is not None:
2738 return self.may_return_none
2739 return ExprNode.may_be_none(self)
2741 def analyse_as_type_constructor(self, env):
2742 type = self.function.analyse_as_type(env)
2743 if type and type.is_struct_or_union:
2744 args, kwds = self.explicit_args_kwds()
2746 for arg, member in zip(args, type.scope.var_entries):
2747 items.append(DictItemNode(pos=arg.pos, key=StringNode(pos=arg.pos, value=member.name), value=arg))
2749 items += kwds.key_value_pairs
2750 self.key_value_pairs = items
2751 self.__class__ = DictNode
2752 self.analyse_types(env)
2753 self.coerce_to(type, env)
2755 elif type and type.is_cpp_class:
2756 for arg in self.args:
2757 arg.analyse_types(env)
2758 constructor = type.scope.lookup("<init>")
2759 self.function = RawCNameExprNode(self.function.pos, constructor.type)
2760 self.function.entry = constructor
2761 self.function.set_cname(type.declaration_code(""))
2762 self.analyse_c_function_call(env)
2765 def is_lvalue(self):
2766 return self.type.is_reference
2768 def nogil_check(self, env):
2769 func_type = self.function_type()
2770 if func_type.is_pyobject:
2772 elif not getattr(func_type, 'nogil', False):
2775 gil_message = "Calling gil-requiring function"
2778 class SimpleCallNode(CallNode):
2779 # Function call without keyword, * or ** args.
2783 # arg_tuple ExprNode or None used internally
2784 # self ExprNode or None used internally
2785 # coerced_self ExprNode or None used internally
2786 # wrapper_call bool used internally
2787 # has_optional_args bool used internally
2788 # nogil bool used internally
2790 subexprs = ['self', 'coerced_self', 'function', 'args', 'arg_tuple']
2795 wrapper_call = False
2796 has_optional_args = False
2800 def compile_time_value(self, denv):
2801 function = self.function.compile_time_value(denv)
2802 args = [arg.compile_time_value(denv) for arg in self.args]
2804 return function(*args)
2805 except Exception, e:
2806 self.compile_time_value_error(e)
2808 def type_dependencies(self, env):
2809 # TODO: Update when Danilo's C++ code merged in to handle the
2810 # the case of function overloading.
2811 return self.function.type_dependencies(env)
2813 def infer_type(self, env):
2814 function = self.function
2815 func_type = function.infer_type(env)
2816 if isinstance(self.function, NewExprNode):
2817 return PyrexTypes.CPtrType(self.function.class_type)
2818 if func_type.is_ptr:
2819 func_type = func_type.base_type
2820 if func_type.is_cfunction:
2821 return func_type.return_type
2822 elif func_type is type_type:
2823 if function.is_name and function.entry and function.entry.type:
2824 result_type = function.entry.type
2825 if result_type.is_extension_type:
2827 elif result_type.is_builtin_type:
2828 if function.entry.name == 'float':
2829 return PyrexTypes.c_double_type
2830 elif function.entry.name in Builtin.types_that_construct_their_instance:
2832 return py_object_type
2834 def analyse_as_type(self, env):
2835 attr = self.function.as_cython_attribute()
2836 if attr == 'pointer':
2837 if len(self.args) != 1:
2838 error(self.args.pos, "only one type allowed.")
2840 type = self.args[0].analyse_as_type(env)
2842 error(self.args[0].pos, "Unknown type")
2844 return PyrexTypes.CPtrType(type)
2846 def explicit_args_kwds(self):
2847 return self.args, None
2849 def analyse_types(self, env):
2850 if self.analyse_as_type_constructor(env):
2854 self.analysed = True
2855 function = self.function
2856 function.is_called = 1
2857 self.function.analyse_types(env)
2858 if function.is_attribute and function.entry and function.entry.is_cmethod:
2859 # Take ownership of the object from which the attribute
2860 # was obtained, because we need to pass it as 'self'.
2861 self.self = function.obj
2862 function.obj = CloneNode(self.self)
2863 func_type = self.function_type()
2864 if func_type.is_pyobject:
2865 self.arg_tuple = TupleNode(self.pos, args = self.args)
2866 self.arg_tuple.analyse_types(env)
2868 if func_type is Builtin.type_type and function.is_name and \
2869 function.entry and \
2870 function.entry.is_builtin and \
2871 function.entry.name in Builtin.types_that_construct_their_instance:
2872 # calling a builtin type that returns a specific object type
2873 if function.entry.name == 'float':
2874 # the following will come true later on in a transform
2875 self.type = PyrexTypes.c_double_type
2876 self.result_ctype = PyrexTypes.c_double_type
2878 self.type = Builtin.builtin_types[function.entry.name]
2879 self.result_ctype = py_object_type
2880 self.may_return_none = False
2881 elif function.is_name and function.type_entry:
2882 # We are calling an extension type constructor. As
2883 # long as we do not support __new__(), the result type
2885 self.type = function.type_entry.type
2886 self.result_ctype = py_object_type
2887 self.may_return_none = False
2889 self.type = py_object_type
2892 for arg in self.args:
2893 arg.analyse_types(env)
2894 if self.self and func_type.args:
2895 # Coerce 'self' to the type expected by the method.
2896 self_arg = func_type.args[0]
2897 if self_arg.not_none: # C methods must do the None test for self at *call* time
2898 self.self = self.self.as_none_safe_node(
2899 "'NoneType' object has no attribute '%s'" % self.function.entry.name,
2900 'PyExc_AttributeError')
2901 expected_type = self_arg.type
2902 self.coerced_self = CloneNode(self.self).coerce_to(
2904 # Insert coerced 'self' argument into argument list.
2905 self.args.insert(0, self.coerced_self)
2906 self.analyse_c_function_call(env)
2908 def function_type(self):
2909 # Return the type of the function being called, coercing a function
2910 # pointer to a function if necessary.
2911 func_type = self.function.type
2912 if func_type.is_ptr:
2913 func_type = func_type.base_type
2916 def analyse_c_function_call(self, env):
2917 if self.function.type is error_type:
2918 self.type = error_type
2920 if self.function.type.is_cpp_class:
2921 overloaded_entry = self.function.type.scope.lookup("operator()")
2922 if overloaded_entry is None:
2923 self.type = PyrexTypes.error_type
2924 self.result_code = "<error>"
2926 elif hasattr(self.function, 'entry'):
2927 overloaded_entry = self.function.entry
2929 overloaded_entry = None
2930 if overloaded_entry:
2931 entry = PyrexTypes.best_match(self.args, overloaded_entry.all_alternatives(), self.pos)
2933 self.type = PyrexTypes.error_type
2934 self.result_code = "<error>"
2936 self.function.entry = entry
2937 self.function.type = entry.type
2938 func_type = self.function_type()
2940 func_type = self.function_type()
2941 if not func_type.is_cfunction:
2942 error(self.pos, "Calling non-function type '%s'" % func_type)
2943 self.type = PyrexTypes.error_type
2944 self.result_code = "<error>"
2947 max_nargs = len(func_type.args)
2948 expected_nargs = max_nargs - func_type.optional_arg_count
2949 actual_nargs = len(self.args)
2950 if func_type.optional_arg_count and expected_nargs != actual_nargs:
2951 self.has_optional_args = 1
2954 for i in range(min(max_nargs, actual_nargs)):
2955 formal_type = func_type.args[i].type
2956 arg = self.args[i].coerce_to(formal_type, env)
2957 if arg.type.is_pyobject and not env.nogil and (arg.is_attribute or not arg.is_simple):
2958 # we do not own the argument's reference, but we must
2959 # make sure it cannot be collected before we return
2960 # from the function, so we create an owned temp
2962 arg = arg.coerce_to_temp(env)
2964 for i in range(max_nargs, actual_nargs):
2965 if self.args[i].type.is_pyobject:
2966 error(self.args[i].pos,
2967 "Python object cannot be passed as a varargs parameter")
2968 # Calc result type and code fragment
2969 if isinstance(self.function, NewExprNode):
2970 self.type = PyrexTypes.CPtrType(self.function.class_type)
2972 self.type = func_type.return_type
2973 if self.type.is_pyobject:
2974 self.result_ctype = py_object_type
2976 elif func_type.exception_value is not None \
2977 or func_type.exception_check:
2979 # Called in 'nogil' context?
2980 self.nogil = env.nogil
2982 func_type.exception_check and
2983 func_type.exception_check != '+'):
2984 env.use_utility_code(pyerr_occurred_withgil_utility_code)
2985 # C++ exception handler
2986 if func_type.exception_check == '+':
2987 if func_type.exception_value is None:
2988 env.use_utility_code(cpp_exception_utility_code)
2990 def calculate_result_code(self):
2991 return self.c_call_code()
2993 def c_call_code(self):
2994 func_type = self.function_type()
2995 if self.type is PyrexTypes.error_type or not func_type.is_cfunction:
2997 formal_args = func_type.args
2999 args = list(zip(formal_args, self.args))
3000 max_nargs = len(func_type.args)
3001 expected_nargs = max_nargs - func_type.optional_arg_count
3002 actual_nargs = len(self.args)
3003 for formal_arg, actual_arg in args[:expected_nargs]:
3004 arg_code = actual_arg.result_as(formal_arg.type)
3005 arg_list_code.append(arg_code)
3007 if func_type.is_overridable:
3008 arg_list_code.append(str(int(self.wrapper_call or self.function.entry.is_unbound_cmethod)))
3010 if func_type.optional_arg_count:
3011 if expected_nargs == actual_nargs:
3012 optional_args = 'NULL'
3014 optional_args = "&%s" % self.opt_arg_struct
3015 arg_list_code.append(optional_args)
3017 for actual_arg in self.args[len(formal_args):]:
3018 arg_list_code.append(actual_arg.result())
3019 result = "%s(%s)" % (self.function.result(),
3020 ', '.join(arg_list_code))
3023 def generate_result_code(self, code):
3024 func_type = self.function_type()
3025 if func_type.is_pyobject:
3026 arg_code = self.arg_tuple.py_result()
3028 "%s = PyObject_Call(%s, %s, NULL); %s" % (
3030 self.function.py_result(),
3032 code.error_goto_if_null(self.result(), self.pos)))
3033 code.put_gotref(self.py_result())
3034 elif func_type.is_cfunction:
3035 if self.has_optional_args:
3036 actual_nargs = len(self.args)
3037 expected_nargs = len(func_type.args) - func_type.optional_arg_count
3038 self.opt_arg_struct = code.funcstate.allocate_temp(
3039 func_type.op_arg_struct.base_type, manage_ref=True)
3040 code.putln("%s.%s = %s;" % (
3041 self.opt_arg_struct,
3042 Naming.pyrex_prefix + "n",
3043 len(self.args) - expected_nargs))
3044 args = list(zip(func_type.args, self.args))
3045 for formal_arg, actual_arg in args[expected_nargs:actual_nargs]:
3046 code.putln("%s.%s = %s;" % (
3047 self.opt_arg_struct,
3048 func_type.opt_arg_cname(formal_arg.name),
3049 actual_arg.result_as(formal_arg.type)))
3051 if self.type.is_pyobject and self.is_temp:
3052 exc_checks.append("!%s" % self.result())
3054 exc_val = func_type.exception_value
3055 exc_check = func_type.exception_check
3056 if exc_val is not None:
3057 exc_checks.append("%s == %s" % (self.result(), exc_val))
3060 exc_checks.append("__Pyx_ErrOccurredWithGIL()")
3062 exc_checks.append("PyErr_Occurred()")
3063 if self.is_temp or exc_checks:
3064 rhs = self.c_call_code()
3066 lhs = "%s = " % self.result()
3067 if self.is_temp and self.type.is_pyobject:
3068 #return_type = self.type # func_type.return_type
3069 #print "SimpleCallNode.generate_result_code: casting", rhs, \
3070 # "from", return_type, "to pyobject" ###
3071 rhs = typecast(py_object_type, self.type, rhs)
3074 if func_type.exception_check == '+':
3075 if func_type.exception_value is None:
3076 raise_py_exception = "__Pyx_CppExn2PyErr()"
3077 elif func_type.exception_value.type.is_pyobject:
3078 raise_py_exception = ' try { throw; } catch(const std::exception& exn) { PyErr_SetString(%s, exn.what()); } catch(...) { PyErr_SetNone(%s); }' % (
3079 func_type.exception_value.entry.cname,
3080 func_type.exception_value.entry.cname)
3082 raise_py_exception = '%s(); if (!PyErr_Occurred()) PyErr_SetString(PyExc_RuntimeError , "Error converting c++ exception.")' % func_type.exception_value.entry.cname
3084 raise_py_exception = 'Py_BLOCK_THREADS; %s; Py_UNBLOCK_THREADS' % raise_py_exception
3086 "try {%s%s;} catch(...) {%s; %s}" % (
3090 code.error_goto(self.pos)))
3093 goto_error = code.error_goto_if(" && ".join(exc_checks), self.pos)
3096 code.putln("%s%s; %s" % (lhs, rhs, goto_error))
3097 if self.type.is_pyobject and self.result():
3098 code.put_gotref(self.py_result())
3099 if self.has_optional_args:
3100 code.funcstate.release_temp(self.opt_arg_struct)
3103 class PythonCapiFunctionNode(ExprNode):
3105 def __init__(self, pos, py_name, cname, func_type, utility_code = None):
3109 self.type = func_type
3110 self.utility_code = utility_code
3112 def analyse_types(self, env):
3115 def generate_result_code(self, code):
3116 if self.utility_code:
3117 code.globalstate.use_utility_code(self.utility_code)
3119 def calculate_result_code(self):
3122 class PythonCapiCallNode(SimpleCallNode):
3123 # Python C-API Function call (only created in transforms)
3125 # By default, we assume that the call never returns None, as this
3126 # is true for most C-API functions in CPython. If this does not
3127 # apply to a call, set the following to True (or None to inherit
3128 # the default behaviour).
3129 may_return_none = False
3131 def __init__(self, pos, function_name, func_type,
3132 utility_code = None, py_name=None, **kwargs):
3133 self.type = func_type.return_type
3134 self.result_ctype = self.type
3135 self.function = PythonCapiFunctionNode(
3136 pos, py_name, function_name, func_type,
3137 utility_code = utility_code)
3138 # call this last so that we can override the constructed
3139 # attributes above with explicit keyword arguments if required
3140 SimpleCallNode.__init__(self, pos, **kwargs)
3143 class GeneralCallNode(CallNode):
3144 # General Python function call, including keyword,
3145 # * and ** arguments.
3148 # positional_args ExprNode Tuple of positional arguments
3149 # keyword_args ExprNode or None Dict of keyword arguments
3150 # starstar_arg ExprNode or None Dict of extra keyword args
3152 type = py_object_type
3154 subexprs = ['function', 'positional_args', 'keyword_args', 'starstar_arg']
3156 nogil_check = Node.gil_error
3158 def compile_time_value(self, denv):
3159 function = self.function.compile_time_value(denv)
3160 positional_args = self.positional_args.compile_time_value(denv)
3161 keyword_args = self.keyword_args.compile_time_value(denv)
3162 starstar_arg = self.starstar_arg.compile_time_value(denv)
3164 keyword_args.update(starstar_arg)
3165 return function(*positional_args, **keyword_args)
3166 except Exception, e:
3167 self.compile_time_value_error(e)
3169 def explicit_args_kwds(self):
3170 if self.starstar_arg or not isinstance(self.positional_args, TupleNode):
3171 raise CompileError(self.pos,
3172 'Compile-time keyword arguments must be explicit.')
3173 return self.positional_args.args, self.keyword_args
3175 def analyse_types(self, env):
3176 if self.analyse_as_type_constructor(env):
3178 self.function.analyse_types(env)
3179 self.positional_args.analyse_types(env)
3180 if self.keyword_args:
3181 self.keyword_args.analyse_types(env)
3182 if self.starstar_arg:
3183 self.starstar_arg.analyse_types(env)
3184 if not self.function.type.is_pyobject:
3185 if self.function.type.is_error:
3186 self.type = error_type
3188 if hasattr(self.function, 'entry') and not self.function.entry.as_variable:
3189 error(self.pos, "Keyword and starred arguments not allowed in cdef functions.")
3191 self.function = self.function.coerce_to_pyobject(env)
3192 self.positional_args = \
3193 self.positional_args.coerce_to_pyobject(env)
3194 if self.starstar_arg:
3195 self.starstar_arg = \
3196 self.starstar_arg.coerce_to_pyobject(env)
3197 function = self.function
3198 if function.is_name and function.type_entry:
3199 # We are calling an extension type constructor. As long
3200 # as we do not support __new__(), the result type is clear
3201 self.type = function.type_entry.type
3202 self.result_ctype = py_object_type
3203 self.may_return_none = False
3205 self.type = py_object_type
3208 def generate_result_code(self, code):
3209 if self.type.is_error: return
3210 kwargs_call_function = "PyEval_CallObjectWithKeywords"
3211 if self.keyword_args and self.starstar_arg:
3212 code.put_error_if_neg(self.pos,
3213 "PyDict_Update(%s, %s)" % (
3214 self.keyword_args.py_result(),
3215 self.starstar_arg.py_result()))
3216 keyword_code = self.keyword_args.py_result()
3217 elif self.keyword_args:
3218 keyword_code = self.keyword_args.py_result()
3219 elif self.starstar_arg:
3220 keyword_code = self.starstar_arg.py_result()
3221 if self.starstar_arg.type is not Builtin.dict_type:
3222 # CPython supports calling functions with non-dicts, so do we
3223 code.globalstate.use_utility_code(kwargs_call_utility_code)
3224 kwargs_call_function = "__Pyx_PyEval_CallObjectWithKeywords"
3227 if not keyword_code:
3228 call_code = "PyObject_Call(%s, %s, NULL)" % (
3229 self.function.py_result(),
3230 self.positional_args.py_result())
3232 call_code = "%s(%s, %s, %s)" % (
3233 kwargs_call_function,
3234 self.function.py_result(),
3235 self.positional_args.py_result(),
3241 code.error_goto_if_null(self.result(), self.pos)))
3242 code.put_gotref(self.py_result())
3245 class AsTupleNode(ExprNode):
3246 # Convert argument to tuple. Used for normalising
3247 # the * argument of a function call.
3253 def calculate_constant_result(self):
3254 self.constant_result = tuple(self.base.constant_result)
3256 def compile_time_value(self, denv):
3257 arg = self.arg.compile_time_value(denv)
3260 except Exception, e:
3261 self.compile_time_value_error(e)
3263 def analyse_types(self, env):
3264 self.arg.analyse_types(env)
3265 self.arg = self.arg.coerce_to_pyobject(env)
3266 self.type = tuple_type
3269 def may_be_none(self):
3272 nogil_check = Node.gil_error
3273 gil_message = "Constructing Python tuple"
3275 def generate_result_code(self, code):
3277 "%s = PySequence_Tuple(%s); %s" % (
3279 self.arg.py_result(),
3280 code.error_goto_if_null(self.result(), self.pos)))
3281 code.put_gotref(self.py_result())
3284 class AttributeNode(ExprNode):
3289 # needs_none_check boolean Used if obj is an extension type.
3290 # If set to True, it is known that the type is not None.
3294 # is_py_attr boolean Is a Python getattr operation
3295 # member string C name of struct member
3296 # is_called boolean Function call is being done on result
3297 # entry Entry Symbol table entry of attribute
3302 type = PyrexTypes.error_type
3305 needs_none_check = True
3307 def as_cython_attribute(self):
3308 if isinstance(self.obj, NameNode) and self.obj.is_cython_module:
3309 return self.attribute
3310 cy = self.obj.as_cython_attribute()
3312 return "%s.%s" % (cy, self.attribute)
3314 def coerce_to(self, dst_type, env):
3315 # If coercing to a generic pyobject and this is a cpdef function
3316 # we can create the corresponding attribute
3317 if dst_type is py_object_type:
3319 if entry and entry.is_cfunction and entry.as_variable:
3320 # must be a cpdef function
3322 self.entry = entry.as_variable
3323 self.analyse_as_python_attribute(env)
3325 return ExprNode.coerce_to(self, dst_type, env)
3327 def calculate_constant_result(self):
3328 attr = self.attribute
3329 if attr.startswith("__") and attr.endswith("__"):
3331 self.constant_result = getattr(self.obj.constant_result, attr)
3333 def compile_time_value(self, denv):
3334 attr = self.attribute
3335 if attr.startswith("__") and attr.endswith("__"):
3337 "Invalid attribute name '%s' in compile-time expression" % attr)
3339 obj = self.obj.compile_time_value(denv)
3341 return getattr(obj, attr)
3342 except Exception, e:
3343 self.compile_time_value_error(e)
3345 def type_dependencies(self, env):
3346 return self.obj.type_dependencies(env)
3348 def infer_type(self, env):
3349 if self.analyse_as_cimported_attribute(env, 0):
3350 return self.entry.type
3351 elif self.analyse_as_unbound_cmethod(env):
3352 return self.entry.type
3354 self.analyse_attribute(env, obj_type = self.obj.infer_type(env))
3357 def analyse_target_declaration(self, env):
3360 def analyse_target_types(self, env):
3361 self.analyse_types(env, target = 1)
3363 def analyse_types(self, env, target = 0):
3364 if self.analyse_as_cimported_attribute(env, target):
3366 if not target and self.analyse_as_unbound_cmethod(env):
3368 self.analyse_as_ordinary_attribute(env, target)
3370 def analyse_as_cimported_attribute(self, env, target):
3371 # Try to interpret this as a reference to an imported
3372 # C const, type, var or function. If successful, mutates
3373 # this node into a NameNode and returns 1, otherwise
3375 module_scope = self.obj.analyse_as_module(env)
3377 entry = module_scope.lookup_here(self.attribute)
3379 entry.is_cglobal or entry.is_cfunction
3380 or entry.is_type or entry.is_const):
3381 self.mutate_into_name_node(env, entry, target)
3385 def analyse_as_unbound_cmethod(self, env):
3386 # Try to interpret this as a reference to an unbound
3387 # C method of an extension type. If successful, mutates
3388 # this node into a NameNode and returns 1, otherwise
3390 type = self.obj.analyse_as_extension_type(env)
3392 entry = type.scope.lookup_here(self.attribute)
3393 if entry and entry.is_cmethod:
3394 # Create a temporary entry describing the C method
3395 # as an ordinary function.
3396 ubcm_entry = Symtab.Entry(entry.name,
3397 "%s->%s" % (type.vtabptr_cname, entry.cname),
3399 ubcm_entry.is_cfunction = 1
3400 ubcm_entry.func_cname = entry.func_cname
3401 ubcm_entry.is_unbound_cmethod = 1
3402 self.mutate_into_name_node(env, ubcm_entry, None)
3406 def analyse_as_type(self, env):
3407 module_scope = self.obj.analyse_as_module(env)
3409 return module_scope.lookup_type(self.attribute)
3410 if not isinstance(self.obj, (UnicodeNode, StringNode, BytesNode)):
3411 base_type = self.obj.analyse_as_type(env)
3412 if base_type and hasattr(base_type, 'scope') and base_type.scope is not None:
3413 return base_type.scope.lookup_type(self.attribute)
3416 def analyse_as_extension_type(self, env):
3417 # Try to interpret this as a reference to an extension type
3418 # in a cimported module. Returns the extension type, or None.
3419 module_scope = self.obj.analyse_as_module(env)
3421 entry = module_scope.lookup_here(self.attribute)
3422 if entry and entry.is_type and entry.type.is_extension_type:
3426 def analyse_as_module(self, env):
3427 # Try to interpret this as a reference to a cimported module
3428 # in another cimported module. Returns the module scope, or None.
3429 module_scope = self.obj.analyse_as_module(env)
3431 entry = module_scope.lookup_here(self.attribute)
3432 if entry and entry.as_module:
3433 return entry.as_module
3436 def mutate_into_name_node(self, env, entry, target):
3437 # Mutate this node into a NameNode and complete the
3438 # analyse_types phase.
3439 self.__class__ = NameNode
3440 self.name = self.attribute
3445 NameNode.analyse_target_types(self, env)
3447 NameNode.analyse_rvalue_entry(self, env)
3449 def analyse_as_ordinary_attribute(self, env, target):
3450 self.obj.analyse_types(env)
3451 self.analyse_attribute(env)
3452 if self.entry and self.entry.is_cmethod and not self.is_called:
3453 # error(self.pos, "C method can only be called")
3455 ## Reference to C array turns into pointer to first element.
3456 #while self.type.is_array:
3457 # self.type = self.type.element_ptr_type()
3461 self.result_ctype = py_object_type
3462 elif target and self.obj.type.is_builtin_type:
3463 error(self.pos, "Assignment to an immutable object field")
3465 def analyse_attribute(self, env, obj_type = None):
3466 # Look up attribute and set self.type and self.member.
3468 self.member = self.attribute
3469 if obj_type is None:
3470 if self.obj.type.is_string:
3471 self.obj = self.obj.coerce_to_pyobject(env)
3472 obj_type = self.obj.type
3474 if obj_type.is_string:
3475 obj_type = py_object_type
3476 if obj_type.is_ptr or obj_type.is_array:
3477 obj_type = obj_type.base_type
3479 elif obj_type.is_extension_type or obj_type.is_builtin_type:
3483 if obj_type.has_attributes:
3485 if obj_type.attributes_known():
3486 entry = obj_type.scope.lookup_here(self.attribute)
3487 if entry and entry.is_member:
3491 "Cannot select attribute of incomplete type '%s'"
3493 self.type = PyrexTypes.error_type
3497 if obj_type.is_extension_type and entry.name == "__weakref__":
3498 error(self.pos, "Illegal use of special attribute __weakref__")
3499 # methods need the normal attribute lookup
3500 # because they do not have struct entries
3501 if entry.is_variable or entry.is_cmethod:
3502 self.type = entry.type
3503 self.member = entry.cname
3506 # If it's not a variable or C method, it must be a Python
3507 # method of an extension type, so we treat it like a Python
3510 # If we get here, the base object is not a struct/union/extension
3511 # type, or it is an extension type and the attribute is either not
3512 # declared or is declared as a Python method. Treat it as a Python
3513 # attribute reference.
3514 self.analyse_as_python_attribute(env, obj_type)
3516 def analyse_as_python_attribute(self, env, obj_type = None):
3517 if obj_type is None:
3518 obj_type = self.obj.type
3519 self.member = self.attribute
3520 self.type = py_object_type
3522 if not obj_type.is_pyobject and not obj_type.is_error:
3523 if obj_type.can_coerce_to_pyobject(env):
3524 self.obj = self.obj.coerce_to_pyobject(env)
3527 "Object of type '%s' has no attribute '%s'" %
3528 (obj_type, self.attribute))
3530 def nogil_check(self, env):
3534 gil_message = "Accessing Python attribute"
3536 def is_simple(self):
3538 return self.result_in_temp() or self.obj.is_simple()
3540 return NameNode.is_simple(self)
3542 def is_lvalue(self):
3546 return NameNode.is_lvalue(self)
3548 def is_ephemeral(self):
3550 return self.obj.is_ephemeral()
3552 return NameNode.is_ephemeral(self)
3554 def calculate_result_code(self):
3555 #print "AttributeNode.calculate_result_code:", self.member ###
3556 #print "...obj node =", self.obj, "code", self.obj.result() ###
3557 #print "...obj type", self.obj.type, "ctype", self.obj.ctype() ###
3559 obj_code = obj.result_as(obj.type)
3560 #print "...obj_code =", obj_code ###
3561 if self.entry and self.entry.is_cmethod:
3562 if obj.type.is_extension_type:
3563 return "((struct %s *)%s%s%s)->%s" % (
3564 obj.type.vtabstruct_cname, obj_code, self.op,
3565 obj.type.vtabslot_cname, self.member)
3568 elif obj.type.is_complex:
3569 return "__Pyx_C%s(%s)" % (self.member.upper(), obj_code)
3571 if obj.type.is_builtin_type and self.entry and self.entry.is_variable:
3572 # accessing a field of a builtin type, need to cast better than result_as() does
3573 obj_code = obj.type.cast_code(obj.result(), to_object_struct = True)
3574 return "%s%s%s" % (obj_code, self.op, self.member)
3576 def generate_result_code(self, code):
3577 interned_attr_cname = code.intern_identifier(self.attribute)
3580 '%s = PyObject_GetAttr(%s, %s); %s' % (
3582 self.obj.py_result(),
3583 interned_attr_cname,
3584 code.error_goto_if_null(self.result(), self.pos)))
3585 code.put_gotref(self.py_result())
3587 # result_code contains what is needed, but we may need to insert
3588 # a check and raise an exception
3589 if (self.obj.type.is_extension_type
3590 and self.needs_none_check
3591 and code.globalstate.directives['nonecheck']):
3592 self.put_nonecheck(code)
3594 def generate_assignment_code(self, rhs, code):
3595 interned_attr_cname = code.intern_identifier(self.attribute)
3596 self.obj.generate_evaluation_code(code)
3598 code.put_error_if_neg(self.pos,
3599 'PyObject_SetAttr(%s, %s, %s)' % (
3600 self.obj.py_result(),
3601 interned_attr_cname,
3603 rhs.generate_disposal_code(code)
3604 rhs.free_temps(code)
3605 elif self.obj.type.is_complex:
3606 code.putln("__Pyx_SET_C%s(%s, %s);" % (
3607 self.member.upper(),
3608 self.obj.result_as(self.obj.type),
3609 rhs.result_as(self.ctype())))
3611 if (self.obj.type.is_extension_type
3612 and self.needs_none_check
3613 and code.globalstate.directives['nonecheck']):
3614 self.put_nonecheck(code)
3616 select_code = self.result()
3617 if self.type.is_pyobject and self.use_managed_ref:
3618 rhs.make_owned_reference(code)
3619 code.put_giveref(rhs.py_result())
3620 code.put_gotref(select_code)
3621 code.put_decref(select_code, self.ctype())
3625 rhs.result_as(self.ctype())))
3627 rhs.generate_post_assignment_code(code)
3628 rhs.free_temps(code)
3629 self.obj.generate_disposal_code(code)
3630 self.obj.free_temps(code)
3632 def generate_deletion_code(self, code):
3633 interned_attr_cname = code.intern_identifier(self.attribute)
3634 self.obj.generate_evaluation_code(code)
3635 if self.is_py_attr or (isinstance(self.entry.scope, Symtab.PropertyScope)
3636 and u'__del__' in self.entry.scope.entries):
3637 code.put_error_if_neg(self.pos,
3638 'PyObject_DelAttr(%s, %s)' % (
3639 self.obj.py_result(),
3640 interned_attr_cname))
3642 error(self.pos, "Cannot delete C attribute of extension type")
3643 self.obj.generate_disposal_code(code)
3644 self.obj.free_temps(code)
3646 def annotate(self, code):
3648 code.annotate(self.pos, AnnotationItem('py_attr', 'python attribute', size=len(self.attribute)))
3650 code.annotate(self.pos, AnnotationItem('c_attr', 'c attribute', size=len(self.attribute)))
3652 def put_nonecheck(self, code):
3653 code.globalstate.use_utility_code(raise_noneattr_error_utility_code)
3654 code.putln("if (%s) {" % code.unlikely("%s == Py_None") % self.obj.result_as(PyrexTypes.py_object_type))
3655 code.putln("__Pyx_RaiseNoneAttributeError(\"%s\");" % self.attribute)
3656 code.putln(code.error_goto(self.pos))
3660 #-------------------------------------------------------------------
3664 #-------------------------------------------------------------------
3666 class StarredTargetNode(ExprNode):
3667 # A starred expression like "*a"
3669 # This is only allowed in sequence assignment targets such as
3671 # a, *b = (1,2,3,4) => a = 1 ; b = [2,3,4]
3673 # and will be removed during type analysis (or generate an error
3674 # if it's found at unexpected places).
3678 subexprs = ['target']
3680 type = py_object_type
3683 def __init__(self, pos, target):
3685 self.target = target
3687 def analyse_declarations(self, env):
3688 error(self.pos, "can use starred expression only as assignment target")
3689 self.target.analyse_declarations(env)
3691 def analyse_types(self, env):
3692 error(self.pos, "can use starred expression only as assignment target")
3693 self.target.analyse_types(env)
3694 self.type = self.target.type
3696 def analyse_target_declaration(self, env):
3697 self.target.analyse_target_declaration(env)
3699 def analyse_target_types(self, env):
3700 self.target.analyse_target_types(env)
3701 self.type = self.target.type
3703 def calculate_result_code(self):
3706 def generate_result_code(self, code):
3710 class SequenceNode(ExprNode):
3711 # Base class for list and tuple constructor nodes.
3712 # Contains common code for performing sequence unpacking.
3716 # unpacked_items [ExprNode] or None
3717 # coerced_unpacked_items [ExprNode] or None
3721 is_sequence_constructor = 1
3722 unpacked_items = None
3724 def compile_time_value_list(self, denv):
3725 return [arg.compile_time_value(denv) for arg in self.args]
3727 def replace_starred_target_node(self):
3728 # replace a starred node in the targets by the contained expression
3729 self.starred_assignment = False
3731 for arg in self.args:
3733 if self.starred_assignment:
3734 error(arg.pos, "more than 1 starred expression in assignment")
3735 self.starred_assignment = True
3737 arg.is_starred = True
3741 def analyse_target_declaration(self, env):
3742 self.replace_starred_target_node()
3743 for arg in self.args:
3744 arg.analyse_target_declaration(env)
3746 def analyse_types(self, env, skip_children=False):
3747 for i in range(len(self.args)):
3749 if not skip_children: arg.analyse_types(env)
3750 self.args[i] = arg.coerce_to_pyobject(env)
3752 # not setting self.type here, subtypes do this
3754 def may_be_none(self):
3757 def analyse_target_types(self, env):
3758 self.iterator = PyTempNode(self.pos, env)
3759 self.unpacked_items = []
3760 self.coerced_unpacked_items = []
3761 for arg in self.args:
3762 arg.analyse_target_types(env)
3764 if not arg.type.assignable_from(Builtin.list_type):
3766 "starred target must have Python object (list) type")
3767 if arg.type is py_object_type:
3768 arg.type = Builtin.list_type
3769 unpacked_item = PyTempNode(self.pos, env)
3770 coerced_unpacked_item = unpacked_item.coerce_to(arg.type, env)
3771 self.unpacked_items.append(unpacked_item)
3772 self.coerced_unpacked_items.append(coerced_unpacked_item)
3773 self.type = py_object_type
3775 def generate_result_code(self, code):
3776 self.generate_operation_code(code)
3778 def generate_assignment_code(self, rhs, code):
3779 if self.starred_assignment:
3780 self.generate_starred_assignment_code(rhs, code)
3782 self.generate_parallel_assignment_code(rhs, code)
3784 for item in self.unpacked_items:
3786 rhs.free_temps(code)
3788 def generate_parallel_assignment_code(self, rhs, code):
3789 # Need to work around the fact that generate_evaluation_code
3790 # allocates the temps in a rather hacky way -- the assignment
3791 # is evaluated twice, within each if-block.
3793 if rhs.type is tuple_type:
3794 tuple_check = "likely(%s != Py_None)"
3796 tuple_check = "PyTuple_CheckExact(%s)"
3798 "if (%s && likely(PyTuple_GET_SIZE(%s) == %s)) {" % (
3799 tuple_check % rhs.py_result(),
3802 code.putln("PyObject* tuple = %s;" % rhs.py_result())
3803 for item in self.unpacked_items:
3805 for i in range(len(self.args)):
3806 item = self.unpacked_items[i]
3808 "%s = PyTuple_GET_ITEM(tuple, %s); " % (
3811 code.put_incref(item.result(), item.ctype())
3812 value_node = self.coerced_unpacked_items[i]
3813 value_node.generate_evaluation_code(code)
3814 rhs.generate_disposal_code(code)
3816 for i in range(len(self.args)):
3817 self.args[i].generate_assignment_code(
3818 self.coerced_unpacked_items[i], code)
3820 code.putln("} else {")
3822 if rhs.type is tuple_type:
3823 code.globalstate.use_utility_code(tuple_unpacking_error_code)
3824 code.putln("__Pyx_UnpackTupleError(%s, %s);" % (
3825 rhs.py_result(), len(self.args)))
3826 code.putln(code.error_goto(self.pos))
3828 code.globalstate.use_utility_code(unpacking_utility_code)
3830 self.iterator.allocate(code)
3832 "%s = PyObject_GetIter(%s); %s" % (
3833 self.iterator.result(),
3835 code.error_goto_if_null(self.iterator.result(), self.pos)))
3836 code.put_gotref(self.iterator.py_result())
3837 rhs.generate_disposal_code(code)
3838 for i in range(len(self.args)):
3839 item = self.unpacked_items[i]
3840 unpack_code = "__Pyx_UnpackItem(%s, %d)" % (
3841 self.iterator.py_result(), i)
3845 typecast(item.ctype(), py_object_type, unpack_code),
3846 code.error_goto_if_null(item.result(), self.pos)))
3847 code.put_gotref(item.py_result())
3848 value_node = self.coerced_unpacked_items[i]
3849 value_node.generate_evaluation_code(code)
3850 code.put_error_if_neg(self.pos, "__Pyx_EndUnpack(%s, %d)" % (
3851 self.iterator.py_result(),
3853 if debug_disposal_code:
3854 print("UnpackNode.generate_assignment_code:")
3855 print("...generating disposal code for %s" % self.iterator)
3856 self.iterator.generate_disposal_code(code)
3857 self.iterator.free_temps(code)
3858 self.iterator.release(code)
3860 for i in range(len(self.args)):
3861 self.args[i].generate_assignment_code(
3862 self.coerced_unpacked_items[i], code)
3866 def generate_starred_assignment_code(self, rhs, code):
3867 code.globalstate.use_utility_code(unpacking_utility_code)
3869 for i, arg in enumerate(self.args):
3871 starred_target = self.unpacked_items[i]
3872 fixed_args_left = self.args[:i]
3873 fixed_args_right = self.args[i+1:]
3876 self.iterator.allocate(code)
3878 "%s = PyObject_GetIter(%s); %s" % (
3879 self.iterator.result(),
3881 code.error_goto_if_null(self.iterator.result(), self.pos)))
3882 code.put_gotref(self.iterator.py_result())
3883 rhs.generate_disposal_code(code)
3885 for item in self.unpacked_items:
3887 for i in range(len(fixed_args_left)):
3888 item = self.unpacked_items[i]
3889 unpack_code = "__Pyx_UnpackItem(%s, %d)" % (
3890 self.iterator.py_result(), i)
3894 typecast(item.ctype(), py_object_type, unpack_code),
3895 code.error_goto_if_null(item.result(), self.pos)))
3896 code.put_gotref(item.py_result())
3897 value_node = self.coerced_unpacked_items[i]
3898 value_node.generate_evaluation_code(code)
3900 target_list = starred_target.result()
3901 code.putln("%s = PySequence_List(%s); %s" % (
3902 target_list, self.iterator.py_result(),
3903 code.error_goto_if_null(target_list, self.pos)))
3904 code.put_gotref(target_list)
3905 if fixed_args_right:
3906 code.globalstate.use_utility_code(raise_need_more_values_to_unpack)
3907 unpacked_right_args = self.unpacked_items[-len(fixed_args_right):]
3908 code.putln("if (unlikely(PyList_GET_SIZE(%s) < %d)) {" % (
3909 (target_list, len(unpacked_right_args))))
3910 code.put("__Pyx_RaiseNeedMoreValuesError(%d+PyList_GET_SIZE(%s)); %s" % (
3911 len(fixed_args_left), target_list,
3912 code.error_goto(self.pos)))
3914 for i, (arg, coerced_arg) in enumerate(zip(unpacked_right_args[::-1],
3915 self.coerced_unpacked_items[::-1])):
3917 "%s = PyList_GET_ITEM(%s, PyList_GET_SIZE(%s)-1); " % (
3919 target_list, target_list))
3920 # resize the list the hard way
3921 code.putln("((PyVarObject*)%s)->ob_size--;" % target_list)
3922 code.put_gotref(arg.py_result())
3923 coerced_arg.generate_evaluation_code(code)
3925 self.iterator.generate_disposal_code(code)
3926 self.iterator.free_temps(code)
3927 self.iterator.release(code)
3929 for i in range(len(self.args)):
3930 self.args[i].generate_assignment_code(
3931 self.coerced_unpacked_items[i], code)
3933 def annotate(self, code):
3934 for arg in self.args:
3936 if self.unpacked_items:
3937 for arg in self.unpacked_items:
3939 for arg in self.coerced_unpacked_items:
3943 class TupleNode(SequenceNode):
3944 # Tuple constructor.
3948 gil_message = "Constructing Python tuple"
3950 def analyse_types(self, env, skip_children=False):
3951 if len(self.args) == 0:
3955 SequenceNode.analyse_types(self, env, skip_children)
3956 for child in self.args:
3957 if not child.is_literal:
3963 def calculate_result_code(self):
3964 if len(self.args) > 0:
3965 return self.result_code
3967 return Naming.empty_tuple
3969 def calculate_constant_result(self):
3970 self.constant_result = tuple([
3971 arg.constant_result for arg in self.args])
3973 def compile_time_value(self, denv):
3974 values = self.compile_time_value_list(denv)
3976 return tuple(values)
3977 except Exception, e:
3978 self.compile_time_value_error(e)
3980 def generate_operation_code(self, code):
3981 if len(self.args) == 0:
3982 # result_code is Naming.empty_tuple
3985 # non-empty cached tuple => result is global constant,
3986 # creation code goes into separate code writer
3987 self.result_code = code.get_py_const(py_object_type, 'tuple_', cleanup_level=2)
3988 code = code.get_cached_constants_writer()
3989 code.mark_pos(self.pos)
3992 "%s = PyTuple_New(%s); %s" % (
3995 code.error_goto_if_null(self.result(), self.pos)))
3996 code.put_gotref(self.py_result())
3997 for i in range(len(self.args)):
3999 if not arg.result_in_temp():
4000 code.put_incref(arg.result(), arg.ctype())
4002 "PyTuple_SET_ITEM(%s, %s, %s);" % (
4006 code.put_giveref(arg.py_result())
4008 code.put_giveref(self.py_result())
4010 def generate_subexpr_disposal_code(self, code):
4011 # We call generate_post_assignment_code here instead
4012 # of generate_disposal_code, because values were stored
4013 # in the tuple using a reference-stealing operation.
4014 for arg in self.args:
4015 arg.generate_post_assignment_code(code)
4016 # Should NOT call free_temps -- this is invoked by the default
4017 # generate_evaluation_code which will do that.
4020 class ListNode(SequenceNode):
4023 # obj_conversion_errors [PyrexError] used internally
4024 # orignial_args [ExprNode] used internally
4026 obj_conversion_errors = []
4029 gil_message = "Constructing Python list"
4031 def type_dependencies(self, env):
4034 def infer_type(self, env):
4035 # TOOD: Infer non-object list arrays.
4038 def analyse_expressions(self, env):
4039 SequenceNode.analyse_expressions(self, env)
4040 self.coerce_to_pyobject(env)
4042 def analyse_types(self, env):
4044 self.original_args = list(self.args)
4045 SequenceNode.analyse_types(self, env)
4046 self.obj_conversion_errors = held_errors()
4047 release_errors(ignore=True)
4049 def coerce_to(self, dst_type, env):
4050 if dst_type.is_pyobject:
4051 for err in self.obj_conversion_errors:
4053 self.obj_conversion_errors = []
4054 if not self.type.subtype_of(dst_type):
4055 error(self.pos, "Cannot coerce list to type '%s'" % dst_type)
4056 elif dst_type.is_ptr and dst_type.base_type is not PyrexTypes.c_void_type:
4057 base_type = dst_type.base_type
4058 self.type = PyrexTypes.CArrayType(base_type, len(self.args))
4059 for i in range(len(self.original_args)):
4061 if isinstance(arg, CoerceToPyTypeNode):
4063 self.args[i] = arg.coerce_to(base_type, env)
4064 elif dst_type.is_struct:
4065 if len(self.args) > len(dst_type.scope.var_entries):
4066 error(self.pos, "Too may members for '%s'" % dst_type)
4068 if len(self.args) < len(dst_type.scope.var_entries):
4069 warning(self.pos, "Too few members for '%s'" % dst_type, 1)
4070 for i, (arg, member) in enumerate(zip(self.original_args, dst_type.scope.var_entries)):
4071 if isinstance(arg, CoerceToPyTypeNode):
4073 self.args[i] = arg.coerce_to(member.type, env)
4074 self.type = dst_type
4076 self.type = error_type
4077 error(self.pos, "Cannot coerce list to type '%s'" % dst_type)
4080 def release_temp(self, env):
4081 if self.type.is_array:
4082 # To be valid C++, we must allocate the memory on the stack
4083 # manually and be sure not to reuse it for something else.
4086 SequenceNode.release_temp(self, env)
4088 def calculate_constant_result(self):
4089 self.constant_result = [
4090 arg.constant_result for arg in self.args]
4092 def compile_time_value(self, denv):
4093 return self.compile_time_value_list(denv)
4095 def generate_operation_code(self, code):
4096 if self.type.is_pyobject:
4097 for err in self.obj_conversion_errors:
4099 code.putln("%s = PyList_New(%s); %s" %
4102 code.error_goto_if_null(self.result(), self.pos)))
4103 code.put_gotref(self.py_result())
4104 for i in range(len(self.args)):
4106 #if not arg.is_temp:
4107 if not arg.result_in_temp():
4108 code.put_incref(arg.result(), arg.ctype())
4109 code.putln("PyList_SET_ITEM(%s, %s, %s);" %
4113 code.put_giveref(arg.py_result())
4114 elif self.type.is_array:
4115 for i, arg in enumerate(self.args):
4116 code.putln("%s[%s] = %s;" % (
4120 elif self.type.is_struct:
4121 for arg, member in zip(self.args, self.type.scope.var_entries):
4122 code.putln("%s.%s = %s;" % (
4127 raise InternalError("List type never specified")
4129 def generate_subexpr_disposal_code(self, code):
4130 # We call generate_post_assignment_code here instead
4131 # of generate_disposal_code, because values were stored
4132 # in the list using a reference-stealing operation.
4133 for arg in self.args:
4134 arg.generate_post_assignment_code(code)
4135 # Should NOT call free_temps -- this is invoked by the default
4136 # generate_evaluation_code which will do that.
4139 class ScopedExprNode(ExprNode):
4140 # Abstract base class for ExprNodes that have their own local
4141 # scope, such as generator expressions.
4143 # expr_scope Scope the inner scope of the expression
4148 # does this node really have a local scope, e.g. does it leak loop
4149 # variables or not? non-leaking Py3 behaviour is default, except
4150 # for list comprehensions where the behaviour differs in Py2 and
4151 # Py3 (set in Parsing.py based on parser context)
4152 has_local_scope = True
4154 def init_scope(self, outer_scope, expr_scope=None):
4155 if expr_scope is not None:
4156 self.expr_scope = expr_scope
4157 elif self.has_local_scope:
4158 self.expr_scope = Symtab.GeneratorExpressionScope(outer_scope)
4160 self.expr_scope = None
4162 def analyse_declarations(self, env):
4163 self.init_scope(env)
4165 def analyse_scoped_declarations(self, env):
4166 # this is called with the expr_scope as env
4169 def analyse_types(self, env):
4170 # no recursion here, the children will be analysed separately below
4173 def analyse_scoped_expressions(self, env):
4174 # this is called with the expr_scope as env
4177 def generate_evaluation_code(self, code):
4178 # set up local variables and free their references on exit
4179 generate_inner_evaluation_code = super(ScopedExprNode, self).generate_evaluation_code
4180 if not self.has_local_scope or not self.expr_scope.var_entries:
4181 # no local variables => delegate, done
4182 generate_inner_evaluation_code(code)
4185 code.putln('{ /* enter inner scope */')
4187 for entry in self.expr_scope.var_entries:
4188 if not entry.in_closure:
4189 code.put_var_declaration(entry)
4190 if entry.type.is_pyobject and entry.used:
4191 py_entries.append(entry)
4193 # no local Python references => no cleanup required
4194 generate_inner_evaluation_code(code)
4195 code.putln('} /* exit inner scope */')
4197 for entry in py_entries:
4198 code.put_init_var_to_py_none(entry)
4200 # must free all local Python references at each exit point
4201 old_loop_labels = tuple(code.new_loop_labels())
4202 old_error_label = code.new_error_label()
4204 generate_inner_evaluation_code(code)
4206 # normal (non-error) exit
4207 for entry in py_entries:
4208 code.put_var_decref(entry)
4210 # error/loop body exit points
4211 exit_scope = code.new_label('exit_scope')
4212 code.put_goto(exit_scope)
4213 for label, old_label in ([(code.error_label, old_error_label)] +
4214 list(zip(code.get_loop_labels(), old_loop_labels))):
4215 if code.label_used(label):
4216 code.put_label(label)
4217 for entry in py_entries:
4218 code.put_var_decref(entry)
4219 code.put_goto(old_label)
4220 code.put_label(exit_scope)
4221 code.putln('} /* exit inner scope */')
4223 code.set_loop_labels(old_loop_labels)
4224 code.error_label = old_error_label
4227 class ComprehensionNode(ScopedExprNode):
4228 subexprs = ["target"]
4229 child_attrs = ["loop", "append"]
4231 def infer_type(self, env):
4232 return self.target.infer_type(env)
4234 def analyse_declarations(self, env):
4235 self.append.target = self # this is used in the PyList_Append of the inner loop
4236 self.init_scope(env)
4238 def analyse_scoped_declarations(self, env):
4239 self.loop.analyse_declarations(env)
4241 def analyse_types(self, env):
4242 self.target.analyse_expressions(env)
4243 self.type = self.target.type
4244 if not self.has_local_scope:
4245 self.loop.analyse_expressions(env)
4247 def analyse_scoped_expressions(self, env):
4248 if self.has_local_scope:
4249 self.loop.analyse_expressions(env)
4251 def may_be_none(self):
4254 def calculate_result_code(self):
4255 return self.target.result()
4257 def generate_result_code(self, code):
4258 self.generate_operation_code(code)
4260 def generate_operation_code(self, code):
4261 self.loop.generate_execution_code(code)
4263 def annotate(self, code):
4264 self.loop.annotate(code)
4267 class ComprehensionAppendNode(Node):
4268 # Need to be careful to avoid infinite recursion:
4269 # target must not be in child_attrs/subexprs
4271 child_attrs = ['expr']
4273 type = PyrexTypes.c_int_type
4275 def analyse_expressions(self, env):
4276 self.expr.analyse_expressions(env)
4277 if not self.expr.type.is_pyobject:
4278 self.expr = self.expr.coerce_to_pyobject(env)
4280 def generate_execution_code(self, code):
4281 if self.target.type is list_type:
4282 function = "PyList_Append"
4283 elif self.target.type is set_type:
4284 function = "PySet_Add"
4286 raise InternalError(
4287 "Invalid type for comprehension node: %s" % self.target.type)
4289 self.expr.generate_evaluation_code(code)
4290 code.putln(code.error_goto_if("%s(%s, (PyObject*)%s)" % (
4292 self.target.result(),
4295 self.expr.generate_disposal_code(code)
4296 self.expr.free_temps(code)
4298 def generate_function_definitions(self, env, code):
4299 self.expr.generate_function_definitions(env, code)
4301 def annotate(self, code):
4302 self.expr.annotate(code)
4304 class DictComprehensionAppendNode(ComprehensionAppendNode):
4305 child_attrs = ['key_expr', 'value_expr']
4307 def analyse_expressions(self, env):
4308 self.key_expr.analyse_expressions(env)
4309 if not self.key_expr.type.is_pyobject:
4310 self.key_expr = self.key_expr.coerce_to_pyobject(env)
4311 self.value_expr.analyse_expressions(env)
4312 if not self.value_expr.type.is_pyobject:
4313 self.value_expr = self.value_expr.coerce_to_pyobject(env)
4315 def generate_execution_code(self, code):
4316 self.key_expr.generate_evaluation_code(code)
4317 self.value_expr.generate_evaluation_code(code)
4318 code.putln(code.error_goto_if("PyDict_SetItem(%s, (PyObject*)%s, (PyObject*)%s)" % (
4319 self.target.result(),
4320 self.key_expr.result(),
4321 self.value_expr.result()
4323 self.key_expr.generate_disposal_code(code)
4324 self.key_expr.free_temps(code)
4325 self.value_expr.generate_disposal_code(code)
4326 self.value_expr.free_temps(code)
4328 def generate_function_definitions(self, env, code):
4329 self.key_expr.generate_function_definitions(env, code)
4330 self.value_expr.generate_function_definitions(env, code)
4332 def annotate(self, code):
4333 self.key_expr.annotate(code)
4334 self.value_expr.annotate(code)
4337 class GeneratorExpressionNode(ScopedExprNode):
4338 # A generator expression, e.g. (i for i in range(10))
4340 # Result is a generator.
4342 # loop ForStatNode the for-loop, containing a YieldExprNode
4344 child_attrs = ["loop"]
4346 type = py_object_type
4348 def analyse_scoped_declarations(self, env):
4349 self.loop.analyse_declarations(env)
4351 def analyse_types(self, env):
4352 if not self.has_local_scope:
4353 self.loop.analyse_expressions(env)
4356 def analyse_scoped_expressions(self, env):
4357 if self.has_local_scope:
4358 self.loop.analyse_expressions(env)
4360 def may_be_none(self):
4363 def annotate(self, code):
4364 self.loop.annotate(code)
4367 class InlinedGeneratorExpressionNode(GeneratorExpressionNode):
4368 # An inlined generator expression for which the result is
4369 # calculated inside of the loop. This will only be created by
4370 # transforms when replacing builtin calls on generator
4373 # loop ForStatNode the for-loop, not containing any YieldExprNodes
4374 # result_node ResultRefNode the reference to the result value temp
4375 # orig_func String the name of the builtin function this node replaces
4377 child_attrs = ["loop"]
4378 loop_analysed = False
4380 def infer_type(self, env):
4381 return self.result_node.infer_type(env)
4383 def analyse_types(self, env):
4384 if not self.has_local_scope:
4385 self.loop_analysed = True
4386 self.loop.analyse_expressions(env)
4387 self.type = self.result_node.type
4390 def analyse_scoped_expressions(self, env):
4391 self.loop_analysed = True
4392 GeneratorExpressionNode.analyse_scoped_expressions(self, env)
4394 def coerce_to(self, dst_type, env):
4395 if self.orig_func == 'sum' and dst_type.is_numeric and not self.loop_analysed:
4396 # We can optimise by dropping the aggregation variable and
4397 # the add operations into C. This can only be done safely
4398 # before analysing the loop body, after that, the result
4399 # reference type will have infected expressions and
4401 self.result_node.type = self.type = dst_type
4403 return GeneratorExpressionNode.coerce_to(self, dst_type, env)
4405 def generate_result_code(self, code):
4406 self.result_node.result_code = self.result()
4407 self.loop.generate_execution_code(code)
4410 class SetNode(ExprNode):
4417 gil_message = "Constructing Python set"
4419 def analyse_types(self, env):
4420 for i in range(len(self.args)):
4422 arg.analyse_types(env)
4423 self.args[i] = arg.coerce_to_pyobject(env)
4424 self.type = set_type
4427 def may_be_none(self):
4430 def calculate_constant_result(self):
4431 self.constant_result = set([
4432 arg.constant_result for arg in self.args])
4434 def compile_time_value(self, denv):
4435 values = [arg.compile_time_value(denv) for arg in self.args]
4438 except Exception, e:
4439 self.compile_time_value_error(e)
4441 def generate_evaluation_code(self, code):
4442 code.globalstate.use_utility_code(Builtin.py23_set_utility_code)
4443 self.allocate_temp_result(code)
4445 "%s = PySet_New(0); %s" % (
4447 code.error_goto_if_null(self.result(), self.pos)))
4448 code.put_gotref(self.py_result())
4449 for arg in self.args:
4450 arg.generate_evaluation_code(code)
4452 code.error_goto_if_neg(
4453 "PySet_Add(%s, %s)" % (self.result(), arg.py_result()),
4455 arg.generate_disposal_code(code)
4456 arg.free_temps(code)
4459 class DictNode(ExprNode):
4460 # Dictionary constructor.
4462 # key_value_pairs [DictItemNode]
4464 # obj_conversion_errors [PyrexError] used internally
4466 subexprs = ['key_value_pairs']
4470 obj_conversion_errors = []
4472 def calculate_constant_result(self):
4473 self.constant_result = dict([
4474 item.constant_result for item in self.key_value_pairs])
4476 def compile_time_value(self, denv):
4477 pairs = [(item.key.compile_time_value(denv), item.value.compile_time_value(denv))
4478 for item in self.key_value_pairs]
4481 except Exception, e:
4482 self.compile_time_value_error(e)
4484 def type_dependencies(self, env):
4487 def infer_type(self, env):
4488 # TOOD: Infer struct constructors.
4491 def analyse_types(self, env):
4493 for item in self.key_value_pairs:
4494 item.analyse_types(env)
4495 self.obj_conversion_errors = held_errors()
4496 release_errors(ignore=True)
4498 def may_be_none(self):
4501 def coerce_to(self, dst_type, env):
4502 if dst_type.is_pyobject:
4503 self.release_errors()
4504 if not self.type.subtype_of(dst_type):
4505 error(self.pos, "Cannot interpret dict as type '%s'" % dst_type)
4506 elif dst_type.is_struct_or_union:
4507 self.type = dst_type
4508 if not dst_type.is_struct and len(self.key_value_pairs) != 1:
4509 error(self.pos, "Exactly one field must be specified to convert to union '%s'" % dst_type)
4510 elif dst_type.is_struct and len(self.key_value_pairs) < len(dst_type.scope.var_entries):
4511 warning(self.pos, "Not all members given for struct '%s'" % dst_type, 1)
4512 for item in self.key_value_pairs:
4513 if isinstance(item.key, CoerceToPyTypeNode):
4514 item.key = item.key.arg
4515 if not isinstance(item.key, (UnicodeNode, StringNode, BytesNode)):
4516 error(item.key.pos, "Invalid struct field identifier")
4517 item.key = StringNode(item.key.pos, value="<error>")
4519 key = str(item.key.value) # converts string literals to unicode in Py3
4520 member = dst_type.scope.lookup_here(key)
4522 error(item.key.pos, "struct '%s' has no field '%s'" % (dst_type, key))
4525 if isinstance(value, CoerceToPyTypeNode):
4527 item.value = value.coerce_to(member.type, env)
4529 self.type = error_type
4530 error(self.pos, "Cannot interpret dict as type '%s'" % dst_type)
4533 def release_errors(self):
4534 for err in self.obj_conversion_errors:
4536 self.obj_conversion_errors = []
4538 gil_message = "Constructing Python dict"
4540 def generate_evaluation_code(self, code):
4541 # Custom method used here because key-value
4542 # pairs are evaluated and used one at a time.
4543 code.mark_pos(self.pos)
4544 self.allocate_temp_result(code)
4545 if self.type.is_pyobject:
4546 self.release_errors()
4548 "%s = PyDict_New(); %s" % (
4550 code.error_goto_if_null(self.result(), self.pos)))
4551 code.put_gotref(self.py_result())
4552 for item in self.key_value_pairs:
4553 item.generate_evaluation_code(code)
4554 if self.type.is_pyobject:
4555 code.put_error_if_neg(self.pos,
4556 "PyDict_SetItem(%s, %s, %s)" % (
4558 item.key.py_result(),
4559 item.value.py_result()))
4561 code.putln("%s.%s = %s;" % (
4564 item.value.result()))
4565 item.generate_disposal_code(code)
4566 item.free_temps(code)
4568 def annotate(self, code):
4569 for item in self.key_value_pairs:
4572 class DictItemNode(ExprNode):
4573 # Represents a single item in a DictNode
4577 subexprs = ['key', 'value']
4579 nogil_check = None # Parent DictNode takes care of it
4581 def calculate_constant_result(self):
4582 self.constant_result = (
4583 self.key.constant_result, self.value.constant_result)
4585 def analyse_types(self, env):
4586 self.key.analyse_types(env)
4587 self.value.analyse_types(env)
4588 self.key = self.key.coerce_to_pyobject(env)
4589 self.value = self.value.coerce_to_pyobject(env)
4591 def generate_evaluation_code(self, code):
4592 self.key.generate_evaluation_code(code)
4593 self.value.generate_evaluation_code(code)
4595 def generate_disposal_code(self, code):
4596 self.key.generate_disposal_code(code)
4597 self.value.generate_disposal_code(code)
4599 def free_temps(self, code):
4600 self.key.free_temps(code)
4601 self.value.free_temps(code)
4604 return iter([self.key, self.value])
4606 class ModuleNameMixin(object):
4607 def set_mod_name(self, env):
4608 self.module_name = env.global_scope().qualified_name
4610 def get_py_mod_name(self, code):
4611 return code.get_py_string_const(
4612 self.module_name, identifier=True)
4614 class ClassNode(ExprNode, ModuleNameMixin):
4615 # Helper class used in the implementation of Python
4616 # class definitions. Constructs a class object given
4617 # a name, tuple of bases and class dictionary.
4619 # name EncodedString Name of the class
4620 # bases ExprNode Base class tuple
4621 # dict ExprNode Class dict (not owned by this node)
4622 # doc ExprNode or None Doc string
4623 # module_name EncodedString Name of defining module
4625 subexprs = ['bases', 'doc']
4627 def analyse_types(self, env):
4628 self.bases.analyse_types(env)
4630 self.doc.analyse_types(env)
4631 self.doc = self.doc.coerce_to_pyobject(env)
4632 self.type = py_object_type
4634 env.use_utility_code(create_class_utility_code);
4635 #TODO(craig,haoyu) This should be moved to a better place
4636 self.set_mod_name(env)
4638 def may_be_none(self):
4641 gil_message = "Constructing Python class"
4643 def generate_result_code(self, code):
4644 cname = code.intern_identifier(self.name)
4647 code.put_error_if_neg(self.pos,
4648 'PyDict_SetItemString(%s, "__doc__", %s)' % (
4649 self.dict.py_result(),
4650 self.doc.py_result()))
4651 py_mod_name = self.get_py_mod_name(code)
4653 '%s = __Pyx_CreateClass(%s, %s, %s, %s); %s' % (
4655 self.bases.py_result(),
4656 self.dict.py_result(),
4659 code.error_goto_if_null(self.result(), self.pos)))
4660 code.put_gotref(self.py_result())
4663 class Py3ClassNode(ExprNode):
4664 # Helper class used in the implementation of Python3+
4665 # class definitions. Constructs a class object given
4666 # a name, tuple of bases and class dictionary.
4668 # name EncodedString Name of the class
4669 # dict ExprNode Class dict (not owned by this node)
4670 # module_name EncodedString Name of defining module
4674 def analyse_types(self, env):
4675 self.type = py_object_type
4678 def may_be_none(self):
4681 gil_message = "Constructing Python class"
4683 def generate_result_code(self, code):
4684 code.globalstate.use_utility_code(create_py3class_utility_code)
4685 cname = code.intern_identifier(self.name)
4687 '%s = __Pyx_Py3ClassCreate(%s, %s, %s, %s, %s); %s' % (
4689 self.metaclass.result(),
4691 self.bases.py_result(),
4692 self.dict.py_result(),
4693 self.mkw.py_result(),
4694 code.error_goto_if_null(self.result(), self.pos)))
4695 code.put_gotref(self.py_result())
4697 class KeywordArgsNode(ExprNode):
4698 # Helper class for keyword arguments
4700 # keyword_args ExprNode or None Keyword arguments
4701 # starstar_arg ExprNode or None Extra arguments
4703 subexprs = ['keyword_args', 'starstar_arg']
4705 def analyse_types(self, env):
4706 if self.keyword_args:
4707 self.keyword_args.analyse_types(env)
4708 if self.starstar_arg:
4709 self.starstar_arg.analyse_types(env)
4710 # make sure we have a Python object as **kwargs mapping
4711 self.starstar_arg = \
4712 self.starstar_arg.coerce_to_pyobject(env)
4713 self.type = py_object_type
4716 gil_message = "Constructing Keyword Args"
4718 def generate_result_code(self, code):
4719 if self.keyword_args and self.starstar_arg:
4720 code.put_error_if_neg(self.pos,
4721 "PyDict_Update(%s, %s)" % (
4722 self.keyword_args.py_result(),
4723 self.starstar_arg.py_result()))
4724 if self.keyword_args:
4725 code.putln("%s = %s;" % (self.result(), self.keyword_args.result()))
4726 code.put_incref(self.keyword_args.result(), self.keyword_args.ctype())
4727 elif self.starstar_arg:
4729 "%s = PyDict_Copy(%s); %s" % (
4731 self.starstar_arg.py_result(),
4732 code.error_goto_if_null(self.result(), self.pos)))
4733 code.put_gotref(self.py_result())
4736 "%s = PyDict_New(); %s" % (
4738 code.error_goto_if_null(self.result(), self.pos)))
4739 code.put_gotref(self.py_result())
4741 class PyClassMetaclassNode(ExprNode):
4742 # Helper class holds Python3 metaclass object
4744 # bases ExprNode Base class tuple (not owned by this node)
4745 # mkw ExprNode Class keyword arguments (not owned by this node)
4749 def analyse_types(self, env):
4750 self.type = py_object_type
4753 def may_be_none(self):
4756 def generate_result_code(self, code):
4758 "%s = __Pyx_Py3MetaclassGet(%s, %s); %s" % (
4760 self.bases.result(),
4762 code.error_goto_if_null(self.result(), self.pos)))
4763 code.put_gotref(self.py_result())
4765 class PyClassNamespaceNode(ExprNode, ModuleNameMixin):
4766 # Helper class holds Python3 namespace object
4768 # All this are not owned by this node
4769 # metaclass ExprNode Metaclass object
4770 # bases ExprNode Base class tuple
4771 # mkw ExprNode Class keyword arguments
4772 # doc ExprNode or None Doc string (owned)
4776 def analyse_types(self, env):
4777 self.bases.analyse_types(env)
4779 self.doc.analyse_types(env)
4780 self.doc = self.doc.coerce_to_pyobject(env)
4781 self.type = py_object_type
4783 #TODO(craig,haoyu) This should be moved to a better place
4784 self.set_mod_name(env)
4786 def may_be_none(self):
4789 def generate_result_code(self, code):
4790 cname = code.intern_identifier(self.name)
4791 py_mod_name = self.get_py_mod_name(code)
4793 doc_code = self.doc.result()
4795 doc_code = '(PyObject *) NULL'
4797 "%s = __Pyx_Py3MetaclassPrepare(%s, %s, %s, %s, %s, %s); %s" % (
4799 self.metaclass.result(),
4800 self.bases.result(),
4805 code.error_goto_if_null(self.result(), self.pos)))
4806 code.put_gotref(self.py_result())
4808 class BoundMethodNode(ExprNode):
4809 # Helper class used in the implementation of Python
4810 # class definitions. Constructs an bound method
4811 # object from a class and a function.
4813 # function ExprNode Function object
4814 # self_object ExprNode self object
4816 subexprs = ['function']
4818 def analyse_types(self, env):
4819 self.function.analyse_types(env)
4820 self.type = py_object_type
4823 gil_message = "Constructing an bound method"
4825 def generate_result_code(self, code):
4827 "%s = PyMethod_New(%s, %s, (PyObject*)%s->ob_type); %s" % (
4829 self.function.py_result(),
4830 self.self_object.py_result(),
4831 self.self_object.py_result(),
4832 code.error_goto_if_null(self.result(), self.pos)))
4833 code.put_gotref(self.py_result())
4835 class UnboundMethodNode(ExprNode):
4836 # Helper class used in the implementation of Python
4837 # class definitions. Constructs an unbound method
4838 # object from a class and a function.
4840 # function ExprNode Function object
4842 type = py_object_type
4845 subexprs = ['function']
4847 def analyse_types(self, env):
4848 self.function.analyse_types(env)
4850 def may_be_none(self):
4853 gil_message = "Constructing an unbound method"
4855 def generate_result_code(self, code):
4856 class_cname = code.pyclass_stack[-1].classobj.result()
4858 "%s = PyMethod_New(%s, 0, %s); %s" % (
4860 self.function.py_result(),
4862 code.error_goto_if_null(self.result(), self.pos)))
4863 code.put_gotref(self.py_result())
4866 class PyCFunctionNode(ExprNode, ModuleNameMixin):
4867 # Helper class used in the implementation of Python
4868 # class definitions. Constructs a PyCFunction object
4869 # from a PyMethodDef struct.
4871 # pymethdef_cname string PyMethodDef structure
4872 # self_object ExprNode or None
4874 # module_name EncodedString Name of defining module
4880 type = py_object_type
4883 def analyse_types(self, env):
4885 env.use_utility_code(binding_cfunc_utility_code)
4887 #TODO(craig,haoyu) This should be moved to a better place
4888 self.set_mod_name(env)
4890 def may_be_none(self):
4893 gil_message = "Constructing Python function"
4895 def self_result_code(self):
4896 if self.self_object is None:
4897 self_result = "NULL"
4899 self_result = self.self_object.py_result()
4902 def generate_result_code(self, code):
4904 constructor = "%s_NewEx" % Naming.binding_cfunc
4906 constructor = "PyCFunction_NewEx"
4907 py_mod_name = self.get_py_mod_name(code)
4909 '%s = %s(&%s, %s, %s); %s' % (
4912 self.pymethdef_cname,
4913 self.self_result_code(),
4915 code.error_goto_if_null(self.result(), self.pos)))
4916 code.put_gotref(self.py_result())
4918 class InnerFunctionNode(PyCFunctionNode):
4919 # Special PyCFunctionNode that depends on a closure class
4923 needs_self_code = True
4925 def self_result_code(self):
4926 if self.needs_self_code:
4927 return "((PyObject*)%s)" % (Naming.cur_scope_cname)
4930 class LambdaNode(InnerFunctionNode):
4931 # Lambda expression node (only used as a function reference)
4933 # args [CArgDeclNode] formal arguments
4934 # star_arg PyArgDeclNode or None * argument
4935 # starstar_arg PyArgDeclNode or None ** argument
4936 # lambda_name string a module-globally unique lambda name
4937 # result_expr ExprNode
4938 # def_node DefNode the underlying function 'def' node
4940 child_attrs = ['def_node']
4943 name = StringEncoding.EncodedString('<lambda>')
4945 def analyse_declarations(self, env):
4946 self.def_node.analyse_declarations(env)
4947 self.pymethdef_cname = self.def_node.entry.pymethdef_cname
4948 env.add_lambda_def(self.def_node)
4950 class YieldExprNode(ExprNode):
4951 # Yield expression node
4953 # arg ExprNode the value to return from the generator
4954 # label_name string name of the C label used for this yield
4957 type = py_object_type
4959 def analyse_types(self, env):
4961 if self.arg is not None:
4962 self.arg.analyse_types(env)
4963 if not self.arg.type.is_pyobject:
4964 self.arg = self.arg.coerce_to_pyobject(env)
4965 error(self.pos, "Generators are not supported")
4967 def generate_result_code(self, code):
4968 self.label_name = code.new_label('resume_from_yield')
4969 code.use_label(self.label_name)
4970 code.putln("/* FIXME: save temporary variables */")
4971 code.putln("/* FIXME: return from function, yielding value */")
4972 code.put_label(self.label_name)
4973 code.putln("/* FIXME: restore temporary variables and */")
4974 code.putln("/* FIXME: extract sent value from closure */")
4977 #-------------------------------------------------------------------
4979 # Unary operator nodes
4981 #-------------------------------------------------------------------
4983 compile_time_unary_operators = {
4984 'not': operator.not_,
4990 class UnopNode(ExprNode):
4994 # Processing during analyse_expressions phase:
4996 # analyse_c_operation
4997 # Called when the operand is not a pyobject.
4998 # - Check operand type and coerce if needed.
4999 # - Determine result type and result code fragment.
5000 # - Allocate temporary for result if needed.
5002 subexprs = ['operand']
5005 def calculate_constant_result(self):
5006 func = compile_time_unary_operators[self.operator]
5007 self.constant_result = func(self.operand.constant_result)
5009 def compile_time_value(self, denv):
5010 func = compile_time_unary_operators.get(self.operator)
5013 "Unary '%s' not supported in compile-time expression"
5015 operand = self.operand.compile_time_value(denv)
5017 return func(operand)
5018 except Exception, e:
5019 self.compile_time_value_error(e)
5021 def infer_type(self, env):
5022 operand_type = self.operand.infer_type(env)
5023 if operand_type.is_pyobject:
5024 return py_object_type
5028 def analyse_types(self, env):
5029 self.operand.analyse_types(env)
5030 if self.is_py_operation():
5031 self.coerce_operand_to_pyobject(env)
5032 self.type = py_object_type
5034 elif self.is_cpp_operation():
5035 self.analyse_cpp_operation(env)
5037 self.analyse_c_operation(env)
5039 def check_const(self):
5040 return self.operand.check_const()
5042 def is_py_operation(self):
5043 return self.operand.type.is_pyobject
5045 def nogil_check(self, env):
5046 if self.is_py_operation():
5049 def is_cpp_operation(self):
5050 type = self.operand.type
5051 return type.is_cpp_class
5053 def coerce_operand_to_pyobject(self, env):
5054 self.operand = self.operand.coerce_to_pyobject(env)
5056 def generate_result_code(self, code):
5057 if self.operand.type.is_pyobject:
5058 self.generate_py_operation_code(code)
5060 def generate_py_operation_code(self, code):
5061 function = self.py_operation_function()
5063 "%s = %s(%s); %s" % (
5066 self.operand.py_result(),
5067 code.error_goto_if_null(self.result(), self.pos)))
5068 code.put_gotref(self.py_result())
5070 def type_error(self):
5071 if not self.operand.type.is_error:
5072 error(self.pos, "Invalid operand type for '%s' (%s)" %
5073 (self.operator, self.operand.type))
5074 self.type = PyrexTypes.error_type
5076 def analyse_cpp_operation(self, env):
5077 type = self.operand.type
5079 type = type.base_type
5080 function = type.scope.lookup("operator%s" % self.operator)
5082 error(self.pos, "'%s' operator not defined for %s"
5083 % (self.operator, type))
5086 func_type = function.type
5087 if func_type.is_ptr:
5088 func_type = func_type.base_type
5089 self.type = func_type.return_type
5092 class NotNode(ExprNode):
5097 type = PyrexTypes.c_bint_type
5099 subexprs = ['operand']
5101 def calculate_constant_result(self):
5102 self.constant_result = not self.operand.constant_result
5104 def compile_time_value(self, denv):
5105 operand = self.operand.compile_time_value(denv)
5108 except Exception, e:
5109 self.compile_time_value_error(e)
5111 def infer_type(self, env):
5112 return PyrexTypes.c_bint_type
5114 def analyse_types(self, env):
5115 self.operand.analyse_types(env)
5116 self.operand = self.operand.coerce_to_boolean(env)
5118 def calculate_result_code(self):
5119 return "(!%s)" % self.operand.result()
5121 def generate_result_code(self, code):
5125 class UnaryPlusNode(UnopNode):
5126 # unary '+' operator
5130 def analyse_c_operation(self, env):
5131 self.type = self.operand.type
5133 def py_operation_function(self):
5134 return "PyNumber_Positive"
5136 def calculate_result_code(self):
5137 if self.is_cpp_operation():
5138 return "(+%s)" % self.operand.result()
5140 return self.operand.result()
5143 class UnaryMinusNode(UnopNode):
5144 # unary '-' operator
5148 def analyse_c_operation(self, env):
5149 if self.operand.type.is_numeric:
5150 self.type = self.operand.type
5153 if self.type.is_complex:
5156 def py_operation_function(self):
5157 return "PyNumber_Negative"
5159 def calculate_result_code(self):
5161 return "(-%s)" % self.operand.result()
5163 return "%s(%s)" % (self.operand.type.unary_op('-'), self.operand.result())
5165 def get_constant_c_result_code(self):
5166 value = self.operand.get_constant_c_result_code()
5168 return "(-%s)" % (value)
5170 class TildeNode(UnopNode):
5171 # unary '~' operator
5173 def analyse_c_operation(self, env):
5174 if self.operand.type.is_int:
5175 self.type = self.operand.type
5179 def py_operation_function(self):
5180 return "PyNumber_Invert"
5182 def calculate_result_code(self):
5183 return "(~%s)" % self.operand.result()
5186 class CUnopNode(UnopNode):
5188 def is_py_operation(self):
5191 class DereferenceNode(CUnopNode):
5196 def analyse_c_operation(self, env):
5197 if self.operand.type.is_ptr:
5198 self.type = self.operand.type.base_type
5202 def calculate_result_code(self):
5203 return "(*%s)" % self.operand.result()
5206 class DecrementIncrementNode(CUnopNode):
5207 # unary ++/-- operator
5209 def analyse_c_operation(self, env):
5210 if self.operand.type.is_ptr or self.operand.type.is_numeric:
5211 self.type = self.operand.type
5215 def calculate_result_code(self):
5217 return "(%s%s)" % (self.operator, self.operand.result())
5219 return "(%s%s)" % (self.operand.result(), self.operator)
5221 def inc_dec_constructor(is_prefix, operator):
5222 return lambda pos, **kwds: DecrementIncrementNode(pos, is_prefix=is_prefix, operator=operator, **kwds)
5225 class AmpersandNode(ExprNode):
5226 # The C address-of operator.
5230 subexprs = ['operand']
5232 def infer_type(self, env):
5233 return PyrexTypes.c_ptr_type(self.operand.infer_type(env))
5235 def analyse_types(self, env):
5236 self.operand.analyse_types(env)
5237 argtype = self.operand.type
5238 if not (argtype.is_cfunction or self.operand.is_lvalue()):
5239 self.error("Taking address of non-lvalue")
5241 if argtype.is_pyobject:
5242 self.error("Cannot take address of Python variable")
5244 self.type = PyrexTypes.c_ptr_type(argtype)
5246 def check_const(self):
5247 return self.operand.check_const_addr()
5249 def error(self, mess):
5250 error(self.pos, mess)
5251 self.type = PyrexTypes.error_type
5252 self.result_code = "<error>"
5254 def calculate_result_code(self):
5255 return "(&%s)" % self.operand.result()
5257 def generate_result_code(self, code):
5261 unop_node_classes = {
5263 "-": UnaryMinusNode,
5267 def unop_node(pos, operator, operand):
5268 # Construct unnop node of appropriate class for
5270 if isinstance(operand, IntNode) and operator == '-':
5271 return IntNode(pos = operand.pos, value = str(-Utils.str_to_number(operand.value)))
5272 elif isinstance(operand, UnopNode) and operand.operator == operator:
5273 warning(pos, "Python has no increment/decrement operator: %s%sx = %s(%sx) = x" % ((operator,)*4), 5)
5274 return unop_node_classes[operator](pos,
5275 operator = operator,
5279 class TypecastNode(ExprNode):
5283 # base_type CBaseTypeNode
5284 # declarator CDeclaratorNode
5286 # If used from a transform, one can if wanted specify the attribute
5287 # "type" directly and leave base_type and declarator to None
5289 subexprs = ['operand']
5290 base_type = declarator = type = None
5292 def type_dependencies(self, env):
5295 def infer_type(self, env):
5296 if self.type is None:
5297 base_type = self.base_type.analyse(env)
5298 _, self.type = self.declarator.analyse(base_type, env)
5301 def analyse_types(self, env):
5302 if self.type is None:
5303 base_type = self.base_type.analyse(env)
5304 _, self.type = self.declarator.analyse(base_type, env)
5305 if self.type.is_cfunction:
5307 "Cannot cast to a function type")
5308 self.type = PyrexTypes.error_type
5309 self.operand.analyse_types(env)
5310 to_py = self.type.is_pyobject
5311 from_py = self.operand.type.is_pyobject
5312 if from_py and not to_py and self.operand.is_ephemeral() and not self.type.is_numeric:
5313 error(self.pos, "Casting temporary Python object to non-numeric non-Python type")
5314 if to_py and not from_py:
5315 if self.type is bytes_type and self.operand.type.is_int:
5316 # FIXME: the type cast node isn't needed in this case
5317 # and can be dropped once analyse_types() can return a
5319 self.operand = CoerceIntToBytesNode(self.operand, env)
5320 elif self.operand.type.can_coerce_to_pyobject(env):
5321 self.result_ctype = py_object_type
5322 self.operand = self.operand.coerce_to_pyobject(env)
5324 if self.operand.type.is_ptr:
5325 if not (self.operand.type.base_type.is_void or self.operand.type.base_type.is_struct):
5326 error(self.pos, "Python objects cannot be cast from pointers of primitive types")
5328 # Should this be an error?
5329 warning(self.pos, "No conversion from %s to %s, python object pointer used." % (self.operand.type, self.type))
5330 self.operand = self.operand.coerce_to_simple(env)
5331 elif from_py and not to_py:
5332 if self.type.create_from_py_utility_code(env):
5333 self.operand = self.operand.coerce_to(self.type, env)
5334 elif self.type.is_ptr:
5335 if not (self.type.base_type.is_void or self.type.base_type.is_struct):
5336 error(self.pos, "Python objects cannot be cast to pointers of primitive types")
5338 warning(self.pos, "No conversion from %s to %s, python object pointer used." % (self.type, self.operand.type))
5339 elif from_py and to_py:
5340 if self.typecheck and self.type.is_extension_type:
5341 self.operand = PyTypeTestNode(self.operand, self.type, env, notnone=True)
5342 elif self.type.is_complex and self.operand.type.is_complex:
5343 self.operand = self.operand.coerce_to_simple(env)
5345 def nogil_check(self, env):
5346 if self.type and self.type.is_pyobject and self.is_temp:
5349 def check_const(self):
5350 return self.operand.check_const()
5352 def calculate_constant_result(self):
5353 # we usually do not know the result of a type cast at code
5357 def calculate_result_code(self):
5358 if self.type.is_complex:
5359 operand_result = self.operand.result()
5360 if self.operand.type.is_complex:
5361 real_part = self.type.real_type.cast_code("__Pyx_CREAL(%s)" % operand_result)
5362 imag_part = self.type.real_type.cast_code("__Pyx_CIMAG(%s)" % operand_result)
5364 real_part = self.type.real_type.cast_code(operand_result)
5366 return "%s(%s, %s)" % (
5367 self.type.from_parts,
5371 return self.type.cast_code(self.operand.result())
5373 def get_constant_c_result_code(self):
5374 operand_result = self.operand.get_constant_c_result_code()
5376 return self.type.cast_code(operand_result)
5378 def result_as(self, type):
5379 if self.type.is_pyobject and not self.is_temp:
5380 # Optimise away some unnecessary casting
5381 return self.operand.result_as(type)
5383 return ExprNode.result_as(self, type)
5385 def generate_result_code(self, code):
5388 "%s = (PyObject *)%s;" % (
5390 self.operand.result()))
5391 code.put_incref(self.result(), self.ctype())
5394 class SizeofNode(ExprNode):
5395 # Abstract base class for sizeof(x) expression nodes.
5397 type = PyrexTypes.c_size_t_type
5399 def check_const(self):
5402 def generate_result_code(self, code):
5406 class SizeofTypeNode(SizeofNode):
5407 # C sizeof function applied to a type
5409 # base_type CBaseTypeNode
5410 # declarator CDeclaratorNode
5415 def analyse_types(self, env):
5416 # we may have incorrectly interpreted a dotted name as a type rather than an attribute
5417 # this could be better handled by more uniformly treating types as runtime-available objects
5418 if 0 and self.base_type.module_path:
5419 path = self.base_type.module_path
5420 obj = env.lookup(path[0])
5421 if obj.as_module is None:
5422 operand = NameNode(pos=self.pos, name=path[0])
5423 for attr in path[1:]:
5424 operand = AttributeNode(pos=self.pos, obj=operand, attribute=attr)
5425 operand = AttributeNode(pos=self.pos, obj=operand, attribute=self.base_type.name)
5426 self.operand = operand
5427 self.__class__ = SizeofVarNode
5428 self.analyse_types(env)
5430 if self.arg_type is None:
5431 base_type = self.base_type.analyse(env)
5432 _, arg_type = self.declarator.analyse(base_type, env)
5433 self.arg_type = arg_type
5436 def check_type(self):
5437 arg_type = self.arg_type
5438 if arg_type.is_pyobject and not arg_type.is_extension_type:
5439 error(self.pos, "Cannot take sizeof Python object")
5440 elif arg_type.is_void:
5441 error(self.pos, "Cannot take sizeof void")
5442 elif not arg_type.is_complete():
5443 error(self.pos, "Cannot take sizeof incomplete type '%s'" % arg_type)
5445 def calculate_result_code(self):
5446 if self.arg_type.is_extension_type:
5447 # the size of the pointer is boring
5448 # we want the size of the actual struct
5449 arg_code = self.arg_type.declaration_code("", deref=1)
5451 arg_code = self.arg_type.declaration_code("")
5452 return "(sizeof(%s))" % arg_code
5455 class SizeofVarNode(SizeofNode):
5456 # C sizeof function applied to a variable
5460 subexprs = ['operand']
5462 def analyse_types(self, env):
5463 # We may actually be looking at a type rather than a variable...
5464 # If we are, traditional analysis would fail...
5465 operand_as_type = self.operand.analyse_as_type(env)
5467 self.arg_type = operand_as_type
5468 self.__class__ = SizeofTypeNode
5471 self.operand.analyse_types(env)
5473 def calculate_result_code(self):
5474 return "(sizeof(%s))" % self.operand.result()
5476 def generate_result_code(self, code):
5479 class TypeofNode(ExprNode):
5480 # Compile-time type of an expression, as a string.
5483 # literal StringNode # internal
5486 type = py_object_type
5488 subexprs = ['literal'] # 'operand' will be ignored after type analysis!
5490 def analyse_types(self, env):
5491 self.operand.analyse_types(env)
5492 self.literal = StringNode(
5493 self.pos, value=StringEncoding.EncodedString(str(self.operand.type)))
5494 self.literal.analyse_types(env)
5495 self.literal = self.literal.coerce_to_pyobject(env)
5497 def may_be_none(self):
5500 def generate_evaluation_code(self, code):
5501 self.literal.generate_evaluation_code(code)
5503 def calculate_result_code(self):
5504 return self.literal.calculate_result_code()
5506 #-------------------------------------------------------------------
5508 # Binary operator nodes
5510 #-------------------------------------------------------------------
5512 def _not_in(x, seq):
5515 compile_time_binary_operators = {
5523 'is_not': operator.is_not,
5526 '/': operator.truediv,
5527 '//': operator.floordiv,
5528 '<<': operator.lshift,
5533 '>>': operator.rshift,
5536 'in': operator.contains,
5540 def get_compile_time_binop(node):
5541 func = compile_time_binary_operators.get(node.operator)
5544 "Binary '%s' not supported in compile-time expression"
5548 class BinopNode(ExprNode):
5553 # Processing during analyse_expressions phase:
5555 # analyse_c_operation
5556 # Called when neither operand is a pyobject.
5557 # - Check operand types and coerce if needed.
5558 # - Determine result type and result code fragment.
5559 # - Allocate temporary for result if needed.
5561 subexprs = ['operand1', 'operand2']
5564 def calculate_constant_result(self):
5565 func = compile_time_binary_operators[self.operator]
5566 self.constant_result = func(
5567 self.operand1.constant_result,
5568 self.operand2.constant_result)
5570 def compile_time_value(self, denv):
5571 func = get_compile_time_binop(self)
5572 operand1 = self.operand1.compile_time_value(denv)
5573 operand2 = self.operand2.compile_time_value(denv)
5575 return func(operand1, operand2)
5576 except Exception, e:
5577 self.compile_time_value_error(e)
5579 def infer_type(self, env):
5580 return self.result_type(self.operand1.infer_type(env),
5581 self.operand2.infer_type(env))
5583 def analyse_types(self, env):
5584 self.operand1.analyse_types(env)
5585 self.operand2.analyse_types(env)
5586 self.analyse_operation(env)
5588 def analyse_operation(self, env):
5589 if self.is_py_operation():
5590 self.coerce_operands_to_pyobjects(env)
5591 self.type = self.result_type(self.operand1.type,
5593 assert self.type.is_pyobject
5595 elif self.is_cpp_operation():
5596 self.analyse_cpp_operation(env)
5598 self.analyse_c_operation(env)
5600 def is_py_operation(self):
5601 return self.is_py_operation_types(self.operand1.type, self.operand2.type)
5603 def is_py_operation_types(self, type1, type2):
5604 return type1.is_pyobject or type2.is_pyobject
5606 def is_cpp_operation(self):
5607 return (self.operand1.type.is_cpp_class
5608 or self.operand2.type.is_cpp_class)
5610 def analyse_cpp_operation(self, env):
5611 type1 = self.operand1.type
5612 type2 = self.operand2.type
5613 entry = env.lookup_operator(self.operator, [self.operand1, self.operand2])
5617 func_type = entry.type
5618 if func_type.is_ptr:
5619 func_type = func_type.base_type
5620 if len(func_type.args) == 1:
5621 self.operand2 = self.operand2.coerce_to(func_type.args[0].type, env)
5623 self.operand1 = self.operand1.coerce_to(func_type.args[0].type, env)
5624 self.operand2 = self.operand2.coerce_to(func_type.args[1].type, env)
5625 self.type = func_type.return_type
5627 def result_type(self, type1, type2):
5628 if self.is_py_operation_types(type1, type2):
5630 type2 = Builtin.bytes_type
5632 type1 = Builtin.bytes_type
5633 elif self.operator == '%' \
5634 and type1 in (Builtin.str_type, Builtin.unicode_type):
5635 # note that b'%s' % b'abc' doesn't work in Py3
5637 if type1.is_builtin_type:
5639 if self.operator in '**%+|&^':
5640 # FIXME: at least these operators should be safe - others?
5642 elif self.operator == '*':
5643 if type1 in (Builtin.bytes_type, Builtin.str_type, Builtin.unicode_type):
5645 # multiplication of containers/numbers with an
5646 # integer value always (?) returns the same type
5649 elif type2.is_builtin_type and type1.is_int and self.operator == '*':
5650 # multiplication of containers/numbers with an
5651 # integer value always (?) returns the same type
5653 return py_object_type
5655 return self.compute_c_result_type(type1, type2)
5657 def nogil_check(self, env):
5658 if self.is_py_operation():
5661 def coerce_operands_to_pyobjects(self, env):
5662 self.operand1 = self.operand1.coerce_to_pyobject(env)
5663 self.operand2 = self.operand2.coerce_to_pyobject(env)
5665 def check_const(self):
5666 return self.operand1.check_const() and self.operand2.check_const()
5668 def generate_result_code(self, code):
5669 #print "BinopNode.generate_result_code:", self.operand1, self.operand2 ###
5670 if self.operand1.type.is_pyobject:
5671 function = self.py_operation_function()
5672 if self.operator == '**':
5673 extra_args = ", Py_None"
5677 "%s = %s(%s, %s%s); %s" % (
5680 self.operand1.py_result(),
5681 self.operand2.py_result(),
5683 code.error_goto_if_null(self.result(), self.pos)))
5684 code.put_gotref(self.py_result())
5686 def type_error(self):
5687 if not (self.operand1.type.is_error
5688 or self.operand2.type.is_error):
5689 error(self.pos, "Invalid operand types for '%s' (%s; %s)" %
5690 (self.operator, self.operand1.type,
5691 self.operand2.type))
5692 self.type = PyrexTypes.error_type
5695 class CBinopNode(BinopNode):
5697 def analyse_types(self, env):
5698 BinopNode.analyse_types(self, env)
5699 if self.is_py_operation():
5700 self.type = PyrexTypes.error_type
5702 def py_operation_function():
5705 def calculate_result_code(self):
5706 return "(%s %s %s)" % (
5707 self.operand1.result(),
5709 self.operand2.result())
5712 def c_binop_constructor(operator):
5713 def make_binop_node(pos, **operands):
5714 return CBinopNode(pos, operator=operator, **operands)
5715 return make_binop_node
5717 class NumBinopNode(BinopNode):
5718 # Binary operation taking numeric arguments.
5722 def analyse_c_operation(self, env):
5723 type1 = self.operand1.type
5724 type2 = self.operand2.type
5725 self.type = self.compute_c_result_type(type1, type2)
5729 if self.type.is_complex:
5731 if not self.infix or (type1.is_numeric and type2.is_numeric):
5732 self.operand1 = self.operand1.coerce_to(self.type, env)
5733 self.operand2 = self.operand2.coerce_to(self.type, env)
5735 def compute_c_result_type(self, type1, type2):
5736 if self.c_types_okay(type1, type2):
5737 widest_type = PyrexTypes.widest_numeric_type(type1, type2)
5738 if widest_type is PyrexTypes.c_bint_type:
5739 if self.operator not in '|^&':
5740 # False + False == 0 # not False!
5741 widest_type = PyrexTypes.c_int_type
5746 def get_constant_c_result_code(self):
5747 value1 = self.operand1.get_constant_c_result_code()
5748 value2 = self.operand2.get_constant_c_result_code()
5749 if value1 and value2:
5750 return "(%s %s %s)" % (value1, self.operator, value2)
5754 def c_types_okay(self, type1, type2):
5755 #print "NumBinopNode.c_types_okay:", type1, type2 ###
5756 return (type1.is_numeric or type1.is_enum) \
5757 and (type2.is_numeric or type2.is_enum)
5759 def calculate_result_code(self):
5761 return "(%s %s %s)" % (
5762 self.operand1.result(),
5764 self.operand2.result())
5766 func = self.type.binary_op(self.operator)
5768 error(self.pos, "binary operator %s not supported for %s" % (self.operator, self.type))
5769 return "%s(%s, %s)" % (
5771 self.operand1.result(),
5772 self.operand2.result())
5774 def is_py_operation_types(self, type1, type2):
5775 return (type1 is PyrexTypes.c_py_unicode_type or
5776 type2 is PyrexTypes.c_py_unicode_type or
5777 BinopNode.is_py_operation_types(self, type1, type2))
5779 def py_operation_function(self):
5780 fuction = self.py_functions[self.operator]
5782 fuction = fuction.replace('PyNumber_', 'PyNumber_InPlace')
5787 "^": "PyNumber_Xor",
5788 "&": "PyNumber_And",
5789 "<<": "PyNumber_Lshift",
5790 ">>": "PyNumber_Rshift",
5791 "+": "PyNumber_Add",
5792 "-": "PyNumber_Subtract",
5793 "*": "PyNumber_Multiply",
5794 "/": "__Pyx_PyNumber_Divide",
5795 "//": "PyNumber_FloorDivide",
5796 "%": "PyNumber_Remainder",
5797 "**": "PyNumber_Power"
5800 class IntBinopNode(NumBinopNode):
5801 # Binary operation taking integer arguments.
5803 def c_types_okay(self, type1, type2):
5804 #print "IntBinopNode.c_types_okay:", type1, type2 ###
5805 return (type1.is_int or type1.is_enum) \
5806 and (type2.is_int or type2.is_enum)
5809 class AddNode(NumBinopNode):
5812 def is_py_operation_types(self, type1, type2):
5813 if type1.is_string and type2.is_string:
5816 return NumBinopNode.is_py_operation_types(self, type1, type2)
5818 def compute_c_result_type(self, type1, type2):
5819 #print "AddNode.compute_c_result_type:", type1, self.operator, type2 ###
5820 if (type1.is_ptr or type1.is_array) and (type2.is_int or type2.is_enum):
5822 elif (type2.is_ptr or type2.is_array) and (type1.is_int or type1.is_enum):
5825 return NumBinopNode.compute_c_result_type(
5829 class SubNode(NumBinopNode):
5832 def compute_c_result_type(self, type1, type2):
5833 if (type1.is_ptr or type1.is_array) and (type2.is_int or type2.is_enum):
5835 elif (type1.is_ptr or type1.is_array) and (type2.is_ptr or type2.is_array):
5836 return PyrexTypes.c_int_type
5838 return NumBinopNode.compute_c_result_type(
5842 class MulNode(NumBinopNode):
5845 def is_py_operation_types(self, type1, type2):
5846 if (type1.is_string and type2.is_int) \
5847 or (type2.is_string and type1.is_int):
5850 return NumBinopNode.is_py_operation_types(self, type1, type2)
5853 class DivNode(NumBinopNode):
5854 # '/' or '//' operator.
5857 truedivision = None # == "unknown" if operator == '/'
5858 ctruedivision = False
5859 cdivision_warnings = False
5860 zerodivision_check = None
5862 def find_compile_time_binary_operator(self, op1, op2):
5863 func = compile_time_binary_operators[self.operator]
5864 if self.operator == '/' and self.truedivision is None:
5865 # => true div for floats, floor div for integers
5866 if isinstance(op1, (int,long)) and isinstance(op2, (int,long)):
5867 func = compile_time_binary_operators['//']
5870 def calculate_constant_result(self):
5871 op1 = self.operand1.constant_result
5872 op2 = self.operand2.constant_result
5873 func = self.find_compile_time_binary_operator(op1, op2)
5874 self.constant_result = func(
5875 self.operand1.constant_result,
5876 self.operand2.constant_result)
5878 def compile_time_value(self, denv):
5879 operand1 = self.operand1.compile_time_value(denv)
5880 operand2 = self.operand2.compile_time_value(denv)
5882 func = self.find_compile_time_binary_operator(
5883 self, operand1, operand2)
5884 return func(operand1, operand2)
5885 except Exception, e:
5886 self.compile_time_value_error(e)
5888 def analyse_operation(self, env):
5889 if self.cdivision or env.directives['cdivision']:
5890 self.ctruedivision = False
5892 self.ctruedivision = self.truedivision
5893 NumBinopNode.analyse_operation(self, env)
5894 if self.is_cpp_operation():
5895 self.cdivision = True
5896 if not self.type.is_pyobject:
5897 self.zerodivision_check = (
5898 self.cdivision is None and not env.directives['cdivision']
5899 and (not self.operand2.has_constant_result() or
5900 self.operand2.constant_result == 0))
5901 if self.zerodivision_check or env.directives['cdivision_warnings']:
5902 # Need to check ahead of time to warn or raise zero division error
5903 self.operand1 = self.operand1.coerce_to_simple(env)
5904 self.operand2 = self.operand2.coerce_to_simple(env)
5906 error(self.pos, "Pythonic division not allowed without gil, consider using cython.cdivision(True)")
5908 def compute_c_result_type(self, type1, type2):
5909 if self.operator == '/' and self.ctruedivision:
5910 if not type1.is_float and not type2.is_float:
5911 widest_type = PyrexTypes.widest_numeric_type(type1, PyrexTypes.c_double_type)
5912 widest_type = PyrexTypes.widest_numeric_type(type2, widest_type)
5914 return NumBinopNode.compute_c_result_type(self, type1, type2)
5916 def zero_division_message(self):
5917 if self.type.is_int:
5918 return "integer division or modulo by zero"
5920 return "float division"
5922 def generate_evaluation_code(self, code):
5923 if not self.type.is_pyobject and not self.type.is_complex:
5924 if self.cdivision is None:
5925 self.cdivision = (code.globalstate.directives['cdivision']
5926 or not self.type.signed
5927 or self.type.is_float)
5928 if not self.cdivision:
5929 code.globalstate.use_utility_code(div_int_utility_code.specialize(self.type))
5930 NumBinopNode.generate_evaluation_code(self, code)
5931 self.generate_div_warning_code(code)
5933 def generate_div_warning_code(self, code):
5934 if not self.type.is_pyobject:
5935 if self.zerodivision_check:
5937 zero_test = "%s(%s)" % (self.type.unary_op('zero'), self.operand2.result())
5939 zero_test = "%s == 0" % self.operand2.result()
5940 code.putln("if (unlikely(%s)) {" % zero_test)
5941 code.putln('PyErr_Format(PyExc_ZeroDivisionError, "%s");' % self.zero_division_message())
5942 code.putln(code.error_goto(self.pos))
5944 if self.type.is_int and self.type.signed and self.operator != '%':
5945 code.globalstate.use_utility_code(division_overflow_test_code)
5946 code.putln("else if (sizeof(%s) == sizeof(long) && unlikely(%s == -1) && unlikely(UNARY_NEG_WOULD_OVERFLOW(%s))) {" % (
5947 self.type.declaration_code(''),
5948 self.operand2.result(),
5949 self.operand1.result()))
5950 code.putln('PyErr_Format(PyExc_OverflowError, "value too large to perform division");')
5951 code.putln(code.error_goto(self.pos))
5953 if code.globalstate.directives['cdivision_warnings'] and self.operator != '/':
5954 code.globalstate.use_utility_code(cdivision_warning_utility_code)
5955 code.putln("if ((%s < 0) ^ (%s < 0)) {" % (
5956 self.operand1.result(),
5957 self.operand2.result()))
5958 code.putln(code.set_error_info(self.pos));
5959 code.put("if (__Pyx_cdivision_warning()) ")
5960 code.put_goto(code.error_label)
5963 def calculate_result_code(self):
5964 if self.type.is_complex:
5965 return NumBinopNode.calculate_result_code(self)
5966 elif self.type.is_float and self.operator == '//':
5967 return "floor(%s / %s)" % (
5968 self.operand1.result(),
5969 self.operand2.result())
5970 elif self.truedivision or self.cdivision:
5971 op1 = self.operand1.result()
5972 op2 = self.operand2.result()
5973 if self.truedivision:
5974 if self.type != self.operand1.type:
5975 op1 = self.type.cast_code(op1)
5976 if self.type != self.operand2.type:
5977 op2 = self.type.cast_code(op2)
5978 return "(%s / %s)" % (op1, op2)
5980 return "__Pyx_div_%s(%s, %s)" % (
5981 self.type.specialization_name(),
5982 self.operand1.result(),
5983 self.operand2.result())
5986 class ModNode(DivNode):
5989 def is_py_operation_types(self, type1, type2):
5990 return (type1.is_string
5992 or NumBinopNode.is_py_operation_types(self, type1, type2))
5994 def zero_division_message(self):
5995 if self.type.is_int:
5996 return "integer division or modulo by zero"
5998 return "float divmod()"
6000 def generate_evaluation_code(self, code):
6001 if not self.type.is_pyobject:
6002 if self.cdivision is None:
6003 self.cdivision = code.globalstate.directives['cdivision'] or not self.type.signed
6004 if not self.cdivision:
6005 if self.type.is_int:
6006 code.globalstate.use_utility_code(mod_int_utility_code.specialize(self.type))
6008 code.globalstate.use_utility_code(
6009 mod_float_utility_code.specialize(self.type, math_h_modifier=self.type.math_h_modifier))
6010 NumBinopNode.generate_evaluation_code(self, code)
6011 self.generate_div_warning_code(code)
6013 def calculate_result_code(self):
6015 if self.type.is_float:
6016 return "fmod%s(%s, %s)" % (
6017 self.type.math_h_modifier,
6018 self.operand1.result(),
6019 self.operand2.result())
6021 return "(%s %% %s)" % (
6022 self.operand1.result(),
6023 self.operand2.result())
6025 return "__Pyx_mod_%s(%s, %s)" % (
6026 self.type.specialization_name(),
6027 self.operand1.result(),
6028 self.operand2.result())
6030 class PowNode(NumBinopNode):
6033 def analyse_c_operation(self, env):
6034 NumBinopNode.analyse_c_operation(self, env)
6035 if self.type.is_complex:
6036 if self.type.real_type.is_float:
6037 self.operand1 = self.operand1.coerce_to(self.type, env)
6038 self.operand2 = self.operand2.coerce_to(self.type, env)
6039 self.pow_func = "__Pyx_c_pow" + self.type.real_type.math_h_modifier
6041 error(self.pos, "complex int powers not supported")
6042 self.pow_func = "<error>"
6043 elif self.type.is_float:
6044 self.pow_func = "pow" + self.type.math_h_modifier
6046 self.pow_func = "__Pyx_pow_%s" % self.type.declaration_code('').replace(' ', '_')
6047 env.use_utility_code(
6048 int_pow_utility_code.specialize(func_name=self.pow_func,
6049 type=self.type.declaration_code('')))
6051 def calculate_result_code(self):
6052 # Work around MSVC overloading ambiguity.
6053 def typecast(operand):
6054 if self.type == operand.type:
6055 return operand.result()
6057 return self.type.cast_code(operand.result())
6058 return "%s(%s, %s)" % (
6060 typecast(self.operand1),
6061 typecast(self.operand2))
6064 # Note: This class is temporarily "shut down" into an ineffective temp
6067 # More sophisticated temp reuse was going on before, one could have a
6068 # look at adding this again after /all/ classes are converted to the
6069 # new temp scheme. (The temp juggling cannot work otherwise).
6070 class BoolBinopNode(ExprNode):
6071 # Short-circuiting boolean operation.
6077 subexprs = ['operand1', 'operand2']
6079 def infer_type(self, env):
6080 type1 = self.operand1.infer_type(env)
6081 type2 = self.operand2.infer_type(env)
6082 return PyrexTypes.independent_spanning_type(type1, type2)
6084 def may_be_none(self):
6085 if self.operator == 'or':
6086 return self.operand2.may_be_none()
6088 return self.operand1.may_be_none() or self.operand2.may_be_none()
6090 def calculate_constant_result(self):
6091 if self.operator == 'and':
6092 self.constant_result = \
6093 self.operand1.constant_result and \
6094 self.operand2.constant_result
6096 self.constant_result = \
6097 self.operand1.constant_result or \
6098 self.operand2.constant_result
6100 def compile_time_value(self, denv):
6101 if self.operator == 'and':
6102 return self.operand1.compile_time_value(denv) \
6103 and self.operand2.compile_time_value(denv)
6105 return self.operand1.compile_time_value(denv) \
6106 or self.operand2.compile_time_value(denv)
6108 def coerce_to_boolean(self, env):
6109 return BoolBinopNode(
6111 operator = self.operator,
6112 operand1 = self.operand1.coerce_to_boolean(env),
6113 operand2 = self.operand2.coerce_to_boolean(env),
6114 type = PyrexTypes.c_bint_type,
6115 is_temp = self.is_temp)
6117 def analyse_types(self, env):
6118 self.operand1.analyse_types(env)
6119 self.operand2.analyse_types(env)
6120 self.type = PyrexTypes.independent_spanning_type(self.operand1.type, self.operand2.type)
6121 self.operand1 = self.operand1.coerce_to(self.type, env)
6122 self.operand2 = self.operand2.coerce_to(self.type, env)
6124 # For what we're about to do, it's vital that
6125 # both operands be temp nodes.
6126 self.operand1 = self.operand1.coerce_to_simple(env)
6127 self.operand2 = self.operand2.coerce_to_simple(env)
6130 gil_message = "Truth-testing Python object"
6132 def check_const(self):
6133 return self.operand1.check_const() and self.operand2.check_const()
6135 def generate_evaluation_code(self, code):
6136 code.mark_pos(self.pos)
6137 self.operand1.generate_evaluation_code(code)
6138 test_result, uses_temp = self.generate_operand1_test(code)
6139 if self.operator == 'and':
6148 code.funcstate.release_temp(test_result)
6149 self.operand1.generate_disposal_code(code)
6150 self.operand2.generate_evaluation_code(code)
6151 self.allocate_temp_result(code)
6152 self.operand2.make_owned_reference(code)
6153 code.putln("%s = %s;" % (self.result(), self.operand2.result()))
6154 self.operand2.generate_post_assignment_code(code)
6155 self.operand2.free_temps(code)
6156 code.putln("} else {")
6157 self.operand1.make_owned_reference(code)
6158 code.putln("%s = %s;" % (self.result(), self.operand1.result()))
6159 self.operand1.generate_post_assignment_code(code)
6160 self.operand1.free_temps(code)
6163 def generate_operand1_test(self, code):
6164 # Generate code to test the truth of the first operand.
6165 if self.type.is_pyobject:
6166 test_result = code.funcstate.allocate_temp(PyrexTypes.c_bint_type,
6169 "%s = __Pyx_PyObject_IsTrue(%s); %s" % (
6171 self.operand1.py_result(),
6172 code.error_goto_if_neg(test_result, self.pos)))
6174 test_result = self.operand1.result()
6175 return (test_result, self.type.is_pyobject)
6178 class CondExprNode(ExprNode):
6179 # Short-circuiting conditional expression.
6183 # false_val ExprNode
6188 subexprs = ['test', 'true_val', 'false_val']
6190 def type_dependencies(self, env):
6191 return self.true_val.type_dependencies(env) + self.false_val.type_dependencies(env)
6193 def infer_type(self, env):
6194 return PyrexTypes.independent_spanning_type(self.true_val.infer_type(env),
6195 self.false_val.infer_type(env))
6197 def calculate_constant_result(self):
6198 if self.test.constant_result:
6199 self.constant_result = self.true_val.constant_result
6201 self.constant_result = self.false_val.constant_result
6203 def analyse_types(self, env):
6204 self.test.analyse_types(env)
6205 self.test = self.test.coerce_to_boolean(env)
6206 self.true_val.analyse_types(env)
6207 self.false_val.analyse_types(env)
6208 self.type = PyrexTypes.independent_spanning_type(self.true_val.type, self.false_val.type)
6209 if self.true_val.type.is_pyobject or self.false_val.type.is_pyobject:
6210 self.true_val = self.true_val.coerce_to(self.type, env)
6211 self.false_val = self.false_val.coerce_to(self.type, env)
6213 if self.type == PyrexTypes.error_type:
6216 def type_error(self):
6217 if not (self.true_val.type.is_error or self.false_val.type.is_error):
6218 error(self.pos, "Incompatable types in conditional expression (%s; %s)" %
6219 (self.true_val.type, self.false_val.type))
6220 self.type = PyrexTypes.error_type
6222 def check_const(self):
6223 return (self.test.check_const()
6224 and self.true_val.check_const()
6225 and self.false_val.check_const())
6227 def generate_evaluation_code(self, code):
6228 # Because subexprs may not be evaluated we can use a more optimal
6229 # subexpr allocation strategy than the default, so override evaluation_code.
6231 code.mark_pos(self.pos)
6232 self.allocate_temp_result(code)
6233 self.test.generate_evaluation_code(code)
6234 code.putln("if (%s) {" % self.test.result() )
6235 self.eval_and_get(code, self.true_val)
6236 code.putln("} else {")
6237 self.eval_and_get(code, self.false_val)
6239 self.test.generate_disposal_code(code)
6240 self.test.free_temps(code)
6242 def eval_and_get(self, code, expr):
6243 expr.generate_evaluation_code(code)
6244 expr.make_owned_reference(code)
6245 code.putln("%s = %s;" % (self.result(), expr.result()))
6246 expr.generate_post_assignment_code(code)
6247 expr.free_temps(code)
6249 richcmp_constants = {
6259 class CmpNode(object):
6260 # Mixin class containing code common to PrimaryCmpNodes
6261 # and CascadedCmpNodes.
6263 special_bool_cmp_function = None
6265 def infer_type(self, env):
6266 # TODO: Actually implement this (after merging with -unstable).
6267 return py_object_type
6269 def calculate_cascaded_constant_result(self, operand1_result):
6270 func = compile_time_binary_operators[self.operator]
6271 operand2_result = self.operand2.constant_result
6272 result = func(operand1_result, operand2_result)
6274 self.cascade.calculate_cascaded_constant_result(operand2_result)
6275 if self.cascade.constant_result:
6276 self.constant_result = result and self.cascade.constant_result
6278 self.constant_result = result
6280 def cascaded_compile_time_value(self, operand1, denv):
6281 func = get_compile_time_binop(self)
6282 operand2 = self.operand2.compile_time_value(denv)
6284 result = func(operand1, operand2)
6285 except Exception, e:
6286 self.compile_time_value_error(e)
6289 cascade = self.cascade
6291 # FIXME: I bet this must call cascaded_compile_time_value()
6292 result = result and cascade.cascaded_compile_time_value(operand2, denv)
6295 def is_cpp_comparison(self):
6296 return self.operand1.type.is_cpp_class or self.operand2.type.is_cpp_class
6298 def find_common_int_type(self, env, op, operand1, operand2):
6299 # type1 != type2 and at least one of the types is not a C int
6300 type1 = operand1.type
6301 type2 = operand2.type
6302 type1_can_be_int = False
6303 type2_can_be_int = False
6305 if isinstance(operand1, (StringNode, BytesNode, UnicodeNode)) \
6306 and operand1.can_coerce_to_char_literal():
6307 type1_can_be_int = True
6308 if isinstance(operand2, (StringNode, BytesNode, UnicodeNode)) \
6309 and operand2.can_coerce_to_char_literal():
6310 type2_can_be_int = True
6313 if type2_can_be_int:
6316 if type1_can_be_int:
6318 elif type1_can_be_int:
6319 if type2_can_be_int:
6320 return PyrexTypes.c_uchar_type
6324 def find_common_type(self, env, op, operand1, common_type=None):
6325 operand2 = self.operand2
6326 type1 = operand1.type
6327 type2 = operand2.type
6329 new_common_type = None
6331 # catch general errors
6332 if type1 == str_type and (type2.is_string or type2 in (bytes_type, unicode_type)) or \
6333 type2 == str_type and (type1.is_string or type1 in (bytes_type, unicode_type)):
6334 error(self.pos, "Comparisons between bytes/unicode and str are not portable to Python 3")
6335 new_common_type = error_type
6337 # try to use numeric comparisons where possible
6338 elif type1.is_complex or type2.is_complex:
6339 if op not in ('==', '!='):
6340 error(self.pos, "complex types are unordered")
6341 new_common_type = error_type
6342 if type1.is_pyobject:
6343 new_common_type = type1
6344 elif type2.is_pyobject:
6345 new_common_type = type2
6347 new_common_type = PyrexTypes.widest_numeric_type(type1, type2)
6348 elif type1.is_numeric and type2.is_numeric:
6349 new_common_type = PyrexTypes.widest_numeric_type(type1, type2)
6350 elif common_type is None or not common_type.is_pyobject:
6351 new_common_type = self.find_common_int_type(env, op, operand1, operand2)
6353 if new_common_type is None:
6354 # fall back to generic type compatibility tests
6356 new_common_type = type1
6357 elif type1.is_pyobject or type2.is_pyobject:
6358 if type2.is_numeric or type2.is_string:
6359 if operand2.check_for_coercion_error(type1):
6360 new_common_type = error_type
6362 new_common_type = py_object_type
6363 elif type1.is_numeric or type1.is_string:
6364 if operand1.check_for_coercion_error(type2):
6365 new_common_type = error_type
6367 new_common_type = py_object_type
6368 elif py_object_type.assignable_from(type1) and py_object_type.assignable_from(type2):
6369 new_common_type = py_object_type
6371 # one Python type and one non-Python type, not assignable
6372 self.invalid_types_error(operand1, op, operand2)
6373 new_common_type = error_type
6374 elif type1.assignable_from(type2):
6375 new_common_type = type1
6376 elif type2.assignable_from(type1):
6377 new_common_type = type2
6379 # C types that we couldn't handle up to here are an error
6380 self.invalid_types_error(operand1, op, operand2)
6381 new_common_type = error_type
6383 if new_common_type.is_string and (isinstance(operand1, BytesNode) or
6384 isinstance(operand2, BytesNode)):
6385 # special case when comparing char* to bytes literal: must
6386 # compare string values!
6387 new_common_type = bytes_type
6389 # recursively merge types
6390 if common_type is None or new_common_type.is_error:
6391 common_type = new_common_type
6393 # we could do a lot better by splitting the comparison
6394 # into a non-Python part and a Python part, but this is
6396 common_type = PyrexTypes.spanning_type(common_type, new_common_type)
6399 common_type = self.cascade.find_common_type(env, self.operator, operand2, common_type)
6403 def invalid_types_error(self, operand1, op, operand2):
6404 error(self.pos, "Invalid types for '%s' (%s, %s)" %
6405 (op, operand1.type, operand2.type))
6407 def is_python_comparison(self):
6408 return (not self.is_ptr_contains()
6409 and not self.is_c_string_contains()
6410 and (self.has_python_operands()
6411 or (self.cascade and self.cascade.is_python_comparison())
6412 or self.operator in ('in', 'not_in')))
6414 def coerce_operands_to(self, dst_type, env):
6415 operand2 = self.operand2
6416 if operand2.type != dst_type:
6417 self.operand2 = operand2.coerce_to(dst_type, env)
6419 self.cascade.coerce_operands_to(dst_type, env)
6421 def is_python_result(self):
6422 return ((self.has_python_operands() and
6423 self.special_bool_cmp_function is None and
6424 self.operator not in ('is', 'is_not', 'in', 'not_in') and
6425 not self.is_c_string_contains() and
6426 not self.is_ptr_contains())
6427 or (self.cascade and self.cascade.is_python_result()))
6429 def is_c_string_contains(self):
6430 return self.operator in ('in', 'not_in') and \
6431 ((self.operand1.type.is_int
6432 and (self.operand2.type.is_string or self.operand2.type is bytes_type)) or
6433 (self.operand1.type is PyrexTypes.c_py_unicode_type
6434 and self.operand2.type is unicode_type))
6436 def is_ptr_contains(self):
6437 if self.operator in ('in', 'not_in'):
6438 container_type = self.operand2.type
6439 return (container_type.is_ptr or container_type.is_array) \
6440 and not container_type.is_string
6442 def find_special_bool_compare_function(self, env):
6443 if self.operator in ('==', '!='):
6444 type1, type2 = self.operand1.type, self.operand2.type
6445 if type1.is_pyobject and type2.is_pyobject:
6446 if type1 is Builtin.unicode_type or type2 is Builtin.unicode_type:
6447 env.use_utility_code(pyunicode_equals_utility_code)
6448 self.special_bool_cmp_function = "__Pyx_PyUnicode_Equals"
6452 def generate_operation_code(self, code, result_code,
6453 operand1, op , operand2):
6454 if self.type.is_pyobject:
6455 coerce_result = "__Pyx_PyBool_FromLong"
6462 if self.special_bool_cmp_function:
6463 if operand1.type.is_pyobject:
6464 result1 = operand1.py_result()
6466 result1 = operand1.result()
6467 if operand2.type.is_pyobject:
6468 result2 = operand2.py_result()
6470 result2 = operand2.result()
6471 code.putln("%s = %s(%s, %s, %s); %s" % (
6473 self.special_bool_cmp_function,
6476 richcmp_constants[op],
6477 code.error_goto_if_neg(result_code, self.pos)))
6478 elif op == 'in' or op == 'not_in':
6479 code.globalstate.use_utility_code(contains_utility_code)
6480 if self.type.is_pyobject:
6481 coerce_result = "__Pyx_PyBoolOrNull_FromLong"
6483 negation = "__Pyx_NegateNonNeg"
6484 if operand2.type is dict_type:
6485 method = "PyDict_Contains"
6487 method = "PySequence_Contains"
6488 if self.type.is_pyobject:
6489 error_clause = code.error_goto_if_null
6490 got_ref = "__Pyx_XGOTREF(%s); " % result_code
6492 error_clause = code.error_goto_if_neg
6495 "%s = %s(%s(%s(%s, %s))); %s%s" % (
6500 operand2.py_result(),
6501 operand1.py_result(),
6503 error_clause(result_code, self.pos)))
6504 elif (operand1.type.is_pyobject
6505 and op not in ('is', 'is_not')):
6506 code.putln("%s = PyObject_RichCompare(%s, %s, %s); %s" % (
6508 operand1.py_result(),
6509 operand2.py_result(),
6510 richcmp_constants[op],
6511 code.error_goto_if_null(result_code, self.pos)))
6512 code.put_gotref(result_code)
6513 elif operand1.type.is_complex:
6518 code.putln("%s = %s(%s%s(%s, %s));" % (
6522 operand1.type.unary_op('eq'),
6526 type1 = operand1.type
6527 type2 = operand2.type
6528 if (type1.is_extension_type or type2.is_extension_type) \
6529 and not type1.same_as(type2):
6530 common_type = py_object_type
6531 elif type1.is_numeric:
6532 common_type = PyrexTypes.widest_numeric_type(type1, type2)
6535 code1 = operand1.result_as(common_type)
6536 code2 = operand2.result_as(common_type)
6537 code.putln("%s = %s(%s %s %s);" % (
6541 self.c_operator(op),
6544 def c_operator(self, op):
6547 elif op == 'is_not':
6552 contains_utility_code = UtilityCode(
6554 static CYTHON_INLINE long __Pyx_NegateNonNeg(long b) { return unlikely(b < 0) ? b : !b; }
6555 static CYTHON_INLINE PyObject* __Pyx_PyBoolOrNull_FromLong(long b) {
6556 return unlikely(b < 0) ? NULL : __Pyx_PyBool_FromLong(b);
6560 char_in_bytes_utility_code = UtilityCode(
6562 static CYTHON_INLINE int __Pyx_BytesContains(PyObject* bytes, char character); /*proto*/
6565 static CYTHON_INLINE int __Pyx_BytesContains(PyObject* bytes, char character) {
6566 const Py_ssize_t length = PyBytes_GET_SIZE(bytes);
6567 char* char_start = PyBytes_AS_STRING(bytes);
6569 for (pos=char_start; pos < char_start+length; pos++) {
6570 if (character == pos[0]) return 1;
6576 pyunicode_in_unicode_utility_code = UtilityCode(
6578 static CYTHON_INLINE int __Pyx_UnicodeContains(PyObject* unicode, Py_UNICODE character); /*proto*/
6581 static CYTHON_INLINE int __Pyx_UnicodeContains(PyObject* unicode, Py_UNICODE character) {
6582 const Py_ssize_t length = PyUnicode_GET_SIZE(unicode);
6583 Py_UNICODE* char_start = PyUnicode_AS_UNICODE(unicode);
6585 for (pos=char_start; pos < char_start+length; pos++) {
6586 if (character == pos[0]) return 1;
6592 pyunicode_equals_utility_code = UtilityCode(
6594 static CYTHON_INLINE int __Pyx_PyUnicode_Equals(PyObject* s1, PyObject* s2, int equals); /*proto*/
6597 static CYTHON_INLINE int __Pyx_PyUnicode_Equals(PyObject* s1, PyObject* s2, int equals) {
6598 if (s1 == s2) { /* as done by PyObject_RichCompareBool(); also catches the (interned) empty string */
6599 return (equals == Py_EQ);
6600 } else if (PyUnicode_CheckExact(s1) & PyUnicode_CheckExact(s2)) {
6601 if (PyUnicode_GET_SIZE(s1) != PyUnicode_GET_SIZE(s2)) {
6602 return (equals == Py_NE);
6603 } else if (PyUnicode_GET_SIZE(s1) == 1) {
6604 if (equals == Py_EQ)
6605 return (PyUnicode_AS_UNICODE(s1)[0] == PyUnicode_AS_UNICODE(s2)[0]);
6607 return (PyUnicode_AS_UNICODE(s1)[0] != PyUnicode_AS_UNICODE(s2)[0]);
6609 int result = PyUnicode_Compare(s1, s2);
6610 if ((result == -1) && unlikely(PyErr_Occurred()))
6612 return (equals == Py_EQ) ? (result == 0) : (result != 0);
6614 } else if ((s1 == Py_None) & (s2 == Py_None)) {
6615 return (equals == Py_EQ);
6616 } else if ((s1 == Py_None) & PyUnicode_CheckExact(s2)) {
6617 return (equals == Py_NE);
6618 } else if ((s2 == Py_None) & PyUnicode_CheckExact(s1)) {
6619 return (equals == Py_NE);
6622 PyObject* py_result = PyObject_RichCompare(s1, s2, equals);
6625 result = __Pyx_PyObject_IsTrue(py_result);
6626 Py_DECREF(py_result);
6633 class PrimaryCmpNode(ExprNode, CmpNode):
6634 # Non-cascaded comparison or first comparison of
6635 # a cascaded sequence.
6640 # cascade CascadedCmpNode
6642 # We don't use the subexprs mechanism, because
6643 # things here are too complicated for it to handle.
6644 # Instead, we override all the framework methods
6647 child_attrs = ['operand1', 'operand2', 'cascade']
6651 def infer_type(self, env):
6652 # TODO: Actually implement this (after merging with -unstable).
6653 return py_object_type
6655 def type_dependencies(self, env):
6658 def calculate_constant_result(self):
6659 self.calculate_cascaded_constant_result(self.operand1.constant_result)
6661 def compile_time_value(self, denv):
6662 operand1 = self.operand1.compile_time_value(denv)
6663 return self.cascaded_compile_time_value(operand1, denv)
6665 def analyse_types(self, env):
6666 self.operand1.analyse_types(env)
6667 self.operand2.analyse_types(env)
6668 if self.is_cpp_comparison():
6669 self.analyse_cpp_comparison(env)
6671 error(self.pos, "Cascading comparison not yet supported for cpp types.")
6674 self.cascade.analyse_types(env)
6676 if self.operator in ('in', 'not_in'):
6677 if self.is_c_string_contains():
6678 self.is_pycmp = False
6681 error(self.pos, "Cascading comparison not yet supported for 'int_val in string'.")
6683 if self.operand2.type is unicode_type:
6684 env.use_utility_code(pyunicode_in_unicode_utility_code)
6686 if self.operand1.type is PyrexTypes.c_uchar_type:
6687 self.operand1 = self.operand1.coerce_to(PyrexTypes.c_char_type, env)
6688 if self.operand2.type is not bytes_type:
6689 self.operand2 = self.operand2.coerce_to(bytes_type, env)
6690 env.use_utility_code(char_in_bytes_utility_code)
6691 self.operand2 = self.operand2.as_none_safe_node(
6692 "argument of type 'NoneType' is not iterable")
6693 elif self.is_ptr_contains():
6695 error(self.pos, "Cascading comparison not yet supported for 'val in sliced pointer'.")
6696 self.type = PyrexTypes.c_bint_type
6697 # Will be transformed by IterationTransform
6700 if self.operand2.type is dict_type:
6701 self.operand2 = self.operand2.as_none_safe_node("'NoneType' object is not iterable")
6702 common_type = py_object_type
6703 self.is_pycmp = True
6704 elif self.find_special_bool_compare_function(env):
6705 common_type = None # if coercion needed, the method call above has already done it
6706 self.is_pycmp = False # result is bint
6707 self.is_temp = True # must check for error return
6709 common_type = self.find_common_type(env, self.operator, self.operand1)
6710 self.is_pycmp = common_type.is_pyobject
6712 if common_type is not None and not common_type.is_error:
6713 if self.operand1.type != common_type:
6714 self.operand1 = self.operand1.coerce_to(common_type, env)
6715 self.coerce_operands_to(common_type, env)
6718 self.operand2 = self.operand2.coerce_to_simple(env)
6719 self.cascade.coerce_cascaded_operands_to_temp(env)
6720 if self.is_python_result():
6721 self.type = PyrexTypes.py_object_type
6723 self.type = PyrexTypes.c_bint_type
6726 cdr.type = self.type
6728 if self.is_pycmp or self.cascade:
6731 def analyse_cpp_comparison(self, env):
6732 type1 = self.operand1.type
6733 type2 = self.operand2.type
6734 entry = env.lookup_operator(self.operator, [self.operand1, self.operand2])
6736 error(self.pos, "Invalid types for '%s' (%s, %s)" %
6737 (self.operator, type1, type2))
6738 self.type = PyrexTypes.error_type
6739 self.result_code = "<error>"
6741 func_type = entry.type
6742 if func_type.is_ptr:
6743 func_type = func_type.base_type
6744 if len(func_type.args) == 1:
6745 self.operand2 = self.operand2.coerce_to(func_type.args[0].type, env)
6747 self.operand1 = self.operand1.coerce_to(func_type.args[0].type, env)
6748 self.operand2 = self.operand2.coerce_to(func_type.args[1].type, env)
6749 self.type = func_type.return_type
6751 def has_python_operands(self):
6752 return (self.operand1.type.is_pyobject
6753 or self.operand2.type.is_pyobject)
6755 def check_const(self):
6760 return self.operand1.check_const() and self.operand2.check_const()
6762 def calculate_result_code(self):
6763 if self.operand1.type.is_complex:
6764 if self.operator == "!=":
6768 return "(%s%s(%s, %s))" % (
6770 self.operand1.type.binary_op('=='),
6771 self.operand1.result(),
6772 self.operand2.result())
6773 elif self.is_c_string_contains():
6774 if self.operand2.type is bytes_type:
6775 method = "__Pyx_BytesContains"
6777 method = "__Pyx_UnicodeContains"
6778 if self.operator == "not_in":
6782 return "(%s%s(%s, %s))" % (
6785 self.operand2.result(),
6786 self.operand1.result())
6788 return "(%s %s %s)" % (
6789 self.operand1.result(),
6790 self.c_operator(self.operator),
6791 self.operand2.result())
6793 def generate_evaluation_code(self, code):
6794 self.operand1.generate_evaluation_code(code)
6795 self.operand2.generate_evaluation_code(code)
6797 self.allocate_temp_result(code)
6798 self.generate_operation_code(code, self.result(),
6799 self.operand1, self.operator, self.operand2)
6801 self.cascade.generate_evaluation_code(code,
6802 self.result(), self.operand2)
6803 self.operand1.generate_disposal_code(code)
6804 self.operand1.free_temps(code)
6805 self.operand2.generate_disposal_code(code)
6806 self.operand2.free_temps(code)
6808 def generate_subexpr_disposal_code(self, code):
6809 # If this is called, it is a non-cascaded cmp,
6810 # so only need to dispose of the two main operands.
6811 self.operand1.generate_disposal_code(code)
6812 self.operand2.generate_disposal_code(code)
6814 def free_subexpr_temps(self, code):
6815 # If this is called, it is a non-cascaded cmp,
6816 # so only need to dispose of the two main operands.
6817 self.operand1.free_temps(code)
6818 self.operand2.free_temps(code)
6820 def annotate(self, code):
6821 self.operand1.annotate(code)
6822 self.operand2.annotate(code)
6824 self.cascade.annotate(code)
6827 class CascadedCmpNode(Node, CmpNode):
6828 # A CascadedCmpNode is not a complete expression node. It
6829 # hangs off the side of another comparison node, shares
6830 # its left operand with that node, and shares its result
6831 # with the PrimaryCmpNode at the head of the chain.
6835 # cascade CascadedCmpNode
6837 child_attrs = ['operand2', 'cascade']
6840 constant_result = constant_value_not_set # FIXME: where to calculate this?
6842 def infer_type(self, env):
6843 # TODO: Actually implement this (after merging with -unstable).
6844 return py_object_type
6846 def type_dependencies(self, env):
6849 def has_constant_result(self):
6850 return self.constant_result is not constant_value_not_set and \
6851 self.constant_result is not not_a_constant
6853 def analyse_types(self, env):
6854 self.operand2.analyse_types(env)
6856 self.cascade.analyse_types(env)
6858 def has_python_operands(self):
6859 return self.operand2.type.is_pyobject
6861 def coerce_operands_to_pyobjects(self, env):
6862 self.operand2 = self.operand2.coerce_to_pyobject(env)
6863 if self.operand2.type is dict_type and self.operator in ('in', 'not_in'):
6864 self.operand2 = self.operand2.as_none_safe_node("'NoneType' object is not iterable")
6866 self.cascade.coerce_operands_to_pyobjects(env)
6868 def coerce_cascaded_operands_to_temp(self, env):
6870 #self.operand2 = self.operand2.coerce_to_temp(env) #CTT
6871 self.operand2 = self.operand2.coerce_to_simple(env)
6872 self.cascade.coerce_cascaded_operands_to_temp(env)
6874 def generate_evaluation_code(self, code, result, operand1):
6875 if self.type.is_pyobject:
6876 code.putln("if (__Pyx_PyObject_IsTrue(%s)) {" % result)
6877 code.put_decref(result, self.type)
6879 code.putln("if (%s) {" % result)
6880 self.operand2.generate_evaluation_code(code)
6881 self.generate_operation_code(code, result,
6882 operand1, self.operator, self.operand2)
6884 self.cascade.generate_evaluation_code(
6885 code, result, self.operand2)
6886 # Cascaded cmp result is always temp
6887 self.operand2.generate_disposal_code(code)
6888 self.operand2.free_temps(code)
6891 def annotate(self, code):
6892 self.operand2.annotate(code)
6894 self.cascade.annotate(code)
6897 binop_node_classes = {
6898 "or": BoolBinopNode,
6899 "and": BoolBinopNode,
6914 def binop_node(pos, operator, operand1, operand2, inplace=False):
6915 # Construct binop node of appropriate class for
6917 return binop_node_classes[operator](pos,
6918 operator = operator,
6919 operand1 = operand1,
6920 operand2 = operand2,
6923 #-------------------------------------------------------------------
6927 # Coercion nodes are special in that they are created during
6928 # the analyse_types phase of parse tree processing.
6929 # Their __init__ methods consequently incorporate some aspects
6932 #-------------------------------------------------------------------
6934 class CoercionNode(ExprNode):
6935 # Abstract base class for coercion nodes.
6937 # arg ExprNode node being coerced
6940 constant_result = not_a_constant
6942 def __init__(self, arg):
6946 print("%s Coercing %s" % (self, self.arg))
6948 def calculate_constant_result(self):
6949 # constant folding can break type coercion, so this is disabled
6952 def annotate(self, code):
6953 self.arg.annotate(code)
6954 if self.arg.type != self.type:
6955 file, line, col = self.pos
6956 code.annotate((file, line, col-1), AnnotationItem(style='coerce', tag='coerce', text='[%s] to [%s]' % (self.arg.type, self.type)))
6959 class CastNode(CoercionNode):
6960 # Wrap a node in a C type cast.
6962 def __init__(self, arg, new_type):
6963 CoercionNode.__init__(self, arg)
6964 self.type = new_type
6966 def may_be_none(self):
6967 return self.arg.may_be_none()
6969 def calculate_result_code(self):
6970 return self.arg.result_as(self.type)
6972 def generate_result_code(self, code):
6973 self.arg.generate_result_code(code)
6976 class PyTypeTestNode(CoercionNode):
6977 # This node is used to check that a generic Python
6978 # object is an instance of a particular extension type.
6979 # This node borrows the result of its argument node.
6981 def __init__(self, arg, dst_type, env, notnone=False):
6982 # The arg is know to be a Python object, and
6983 # the dst_type is known to be an extension type.
6984 assert dst_type.is_extension_type or dst_type.is_builtin_type, "PyTypeTest on non extension type"
6985 CoercionNode.__init__(self, arg)
6986 self.type = dst_type
6987 self.result_ctype = arg.ctype()
6988 self.notnone = notnone
6990 nogil_check = Node.gil_error
6991 gil_message = "Python type test"
6993 def analyse_types(self, env):
6996 def may_be_none(self):
6999 return self.arg.may_be_none()
7001 def result_in_temp(self):
7002 return self.arg.result_in_temp()
7004 def is_ephemeral(self):
7005 return self.arg.is_ephemeral()
7007 def calculate_constant_result(self):
7011 def calculate_result_code(self):
7012 return self.arg.result()
7014 def generate_result_code(self, code):
7015 if self.type.typeobj_is_available():
7016 if not self.type.is_builtin_type:
7017 code.globalstate.use_utility_code(type_test_utility_code)
7020 self.type.type_test_code(self.arg.py_result(), self.notnone),
7021 code.error_goto(self.pos)))
7023 error(self.pos, "Cannot test type of extern C class "
7024 "without type object name specification")
7026 def generate_post_assignment_code(self, code):
7027 self.arg.generate_post_assignment_code(code)
7029 def free_temps(self, code):
7030 self.arg.free_temps(code)
7033 class NoneCheckNode(CoercionNode):
7034 # This node is used to check that a Python object is not None and
7035 # raises an appropriate exception (as specified by the creating
7038 def __init__(self, arg, exception_type_cname, exception_message):
7039 CoercionNode.__init__(self, arg)
7040 self.type = arg.type
7041 self.result_ctype = arg.ctype()
7042 self.exception_type_cname = exception_type_cname
7043 self.exception_message = exception_message
7045 def analyse_types(self, env):
7048 def may_be_none(self):
7051 def result_in_temp(self):
7052 return self.arg.result_in_temp()
7054 def calculate_result_code(self):
7055 return self.arg.result()
7057 def generate_result_code(self, code):
7059 "if (unlikely(%s == Py_None)) {" % self.arg.result())
7060 code.putln('PyErr_SetString(%s, "%s"); %s ' % (
7061 self.exception_type_cname,
7062 StringEncoding.escape_byte_string(
7063 self.exception_message.encode('UTF-8')),
7064 code.error_goto(self.pos)))
7067 def generate_post_assignment_code(self, code):
7068 self.arg.generate_post_assignment_code(code)
7070 def free_temps(self, code):
7071 self.arg.free_temps(code)
7074 class CoerceToPyTypeNode(CoercionNode):
7075 # This node is used to convert a C data type
7076 # to a Python object.
7078 type = py_object_type
7081 def __init__(self, arg, env, type=py_object_type):
7082 CoercionNode.__init__(self, arg)
7083 if not arg.type.create_to_py_utility_code(env):
7085 "Cannot convert '%s' to Python object" % arg.type)
7086 if type is py_object_type:
7087 # be specific about some known types
7088 if arg.type.is_string:
7089 self.type = bytes_type
7090 elif arg.type is PyrexTypes.c_py_unicode_type:
7091 self.type = unicode_type
7092 elif arg.type.is_complex:
7093 self.type = Builtin.complex_type
7095 # FIXME: check that the target type and the resulting type are compatible
7098 gil_message = "Converting to Python object"
7100 def may_be_none(self):
7101 # FIXME: is this always safe?
7104 def coerce_to_boolean(self, env):
7105 arg_type = self.arg.type
7106 if (arg_type == PyrexTypes.c_bint_type or
7107 (arg_type.is_pyobject and arg_type.name == 'bool')):
7108 return self.arg.coerce_to_temp(env)
7110 return CoerceToBooleanNode(self, env)
7112 def coerce_to_integer(self, env):
7113 # If not already some C integer type, coerce to longint.
7114 if self.arg.type.is_int:
7117 return self.arg.coerce_to(PyrexTypes.c_long_type, env)
7119 def analyse_types(self, env):
7120 # The arg is always already analysed
7123 def generate_result_code(self, code):
7124 function = self.arg.type.to_py_function
7125 code.putln('%s = %s(%s); %s' % (
7129 code.error_goto_if_null(self.result(), self.pos)))
7130 code.put_gotref(self.py_result())
7133 class CoerceIntToBytesNode(CoerceToPyTypeNode):
7134 # This node is used to convert a C int type to a Python bytes
7139 def __init__(self, arg, env):
7140 arg = arg.coerce_to_simple(env)
7141 CoercionNode.__init__(self, arg)
7142 self.type = Builtin.bytes_type
7144 def generate_result_code(self, code):
7146 arg_result = arg.result()
7147 if arg.type not in (PyrexTypes.c_char_type,
7148 PyrexTypes.c_uchar_type,
7149 PyrexTypes.c_schar_type):
7151 code.putln("if ((%s < 0) || (%s > 255)) {" % (
7152 arg_result, arg_result))
7154 code.putln("if (%s > 255) {" % arg_result)
7155 code.putln('PyErr_Format(PyExc_OverflowError, '
7156 '"value too large to pack into a byte"); %s' % (
7157 code.error_goto(self.pos)))
7160 if arg.type is not PyrexTypes.c_char_type:
7161 temp = code.funcstate.allocate_temp(PyrexTypes.c_char_type, manage_ref=False)
7162 code.putln("%s = (char)%s;" % (temp, arg_result))
7164 code.putln('%s = PyBytes_FromStringAndSize(&%s, 1); %s' % (
7167 code.error_goto_if_null(self.result(), self.pos)))
7168 if temp is not None:
7169 code.funcstate.release_temp(temp)
7170 code.put_gotref(self.py_result())
7173 class CoerceFromPyTypeNode(CoercionNode):
7174 # This node is used to convert a Python object
7177 def __init__(self, result_type, arg, env):
7178 CoercionNode.__init__(self, arg)
7179 self.type = result_type
7181 if not result_type.create_from_py_utility_code(env):
7183 "Cannot convert Python object to '%s'" % result_type)
7184 if self.type.is_string and self.arg.is_ephemeral():
7186 "Obtaining char * from temporary Python value")
7188 def analyse_types(self, env):
7189 # The arg is always already analysed
7192 def generate_result_code(self, code):
7193 function = self.type.from_py_function
7194 operand = self.arg.py_result()
7195 rhs = "%s(%s)" % (function, operand)
7196 if self.type.is_enum:
7197 rhs = typecast(self.type, c_long_type, rhs)
7198 code.putln('%s = %s; %s' % (
7201 code.error_goto_if(self.type.error_condition(self.result()), self.pos)))
7202 if self.type.is_pyobject:
7203 code.put_gotref(self.py_result())
7206 class CoerceToBooleanNode(CoercionNode):
7207 # This node is used when a result needs to be used
7208 # in a boolean context.
7210 type = PyrexTypes.c_bint_type
7212 _special_builtins = {
7213 Builtin.list_type : 'PyList_GET_SIZE',
7214 Builtin.tuple_type : 'PyTuple_GET_SIZE',
7215 Builtin.bytes_type : 'PyBytes_GET_SIZE',
7216 Builtin.unicode_type : 'PyUnicode_GET_SIZE',
7219 def __init__(self, arg, env):
7220 CoercionNode.__init__(self, arg)
7221 if arg.type.is_pyobject:
7224 def nogil_check(self, env):
7225 if self.arg.type.is_pyobject and self._special_builtins.get(self.arg.type) is None:
7228 gil_message = "Truth-testing Python object"
7230 def check_const(self):
7234 return self.arg.check_const()
7236 def calculate_result_code(self):
7237 return "(%s != 0)" % self.arg.result()
7239 def generate_result_code(self, code):
7240 if not self.is_temp:
7242 test_func = self._special_builtins.get(self.arg.type)
7243 if test_func is not None:
7244 code.putln("%s = (%s != Py_None) && (%s(%s) != 0);" % (
7246 self.arg.py_result(),
7248 self.arg.py_result()))
7251 "%s = __Pyx_PyObject_IsTrue(%s); %s" % (
7253 self.arg.py_result(),
7254 code.error_goto_if_neg(self.result(), self.pos)))
7256 class CoerceToComplexNode(CoercionNode):
7258 def __init__(self, arg, dst_type, env):
7259 if arg.type.is_complex:
7260 arg = arg.coerce_to_simple(env)
7261 self.type = dst_type
7262 CoercionNode.__init__(self, arg)
7263 dst_type.create_declaration_utility_code(env)
7265 def calculate_result_code(self):
7266 if self.arg.type.is_complex:
7267 real_part = "__Pyx_CREAL(%s)" % self.arg.result()
7268 imag_part = "__Pyx_CIMAG(%s)" % self.arg.result()
7270 real_part = self.arg.result()
7272 return "%s(%s, %s)" % (
7273 self.type.from_parts,
7277 def generate_result_code(self, code):
7280 class CoerceToTempNode(CoercionNode):
7281 # This node is used to force the result of another node
7282 # to be stored in a temporary. It is only used if the
7283 # argument node's result is not already in a temporary.
7285 def __init__(self, arg, env):
7286 CoercionNode.__init__(self, arg)
7287 self.type = self.arg.type
7288 self.constant_result = self.arg.constant_result
7290 if self.type.is_pyobject:
7291 self.result_ctype = py_object_type
7293 gil_message = "Creating temporary Python reference"
7295 def analyse_types(self, env):
7296 # The arg is always already analysed
7299 def coerce_to_boolean(self, env):
7300 self.arg = self.arg.coerce_to_boolean(env)
7301 if self.arg.is_simple():
7303 self.type = self.arg.type
7304 self.result_ctype = self.type
7307 def generate_result_code(self, code):
7308 #self.arg.generate_evaluation_code(code) # Already done
7309 # by generic generate_subexpr_evaluation_code!
7310 code.putln("%s = %s;" % (
7311 self.result(), self.arg.result_as(self.ctype())))
7312 if self.type.is_pyobject and self.use_managed_ref:
7313 code.put_incref(self.result(), self.ctype())
7316 class CloneNode(CoercionNode):
7317 # This node is employed when the result of another node needs
7318 # to be used multiple times. The argument node's result must
7319 # be in a temporary. This node "borrows" the result from the
7320 # argument node, and does not generate any evaluation or
7321 # disposal code for it. The original owner of the argument
7322 # node is responsible for doing those things.
7324 subexprs = [] # Arg is not considered a subexpr
7327 def __init__(self, arg):
7328 CoercionNode.__init__(self, arg)
7329 if hasattr(arg, 'type'):
7330 self.type = arg.type
7331 self.result_ctype = arg.result_ctype
7332 if hasattr(arg, 'entry'):
7333 self.entry = arg.entry
7336 return self.arg.result()
7338 def type_dependencies(self, env):
7339 return self.arg.type_dependencies(env)
7341 def infer_type(self, env):
7342 return self.arg.infer_type(env)
7344 def analyse_types(self, env):
7345 self.type = self.arg.type
7346 self.result_ctype = self.arg.result_ctype
7348 if hasattr(self.arg, 'entry'):
7349 self.entry = self.arg.entry
7351 def generate_evaluation_code(self, code):
7354 def generate_result_code(self, code):
7357 def generate_disposal_code(self, code):
7360 def free_temps(self, code):
7364 class ModuleRefNode(ExprNode):
7365 # Simple returns the module object
7367 type = py_object_type
7371 def analyse_types(self, env):
7374 def may_be_none(self):
7377 def calculate_result_code(self):
7378 return Naming.module_cname
7380 def generate_result_code(self, code):
7383 class DocstringRefNode(ExprNode):
7384 # Extracts the docstring of the body element
7387 type = py_object_type
7390 def __init__(self, pos, body):
7391 ExprNode.__init__(self, pos)
7392 assert body.type.is_pyobject
7395 def analyse_types(self, env):
7398 def generate_result_code(self, code):
7399 code.putln('%s = __Pyx_GetAttrString(%s, "__doc__"); %s' % (
7400 self.result(), self.body.result(),
7401 code.error_goto_if_null(self.result(), self.pos)))
7402 code.put_gotref(self.result())
7406 #------------------------------------------------------------------------------------
7408 # Runtime support code
7410 #------------------------------------------------------------------------------------
7412 get_name_interned_utility_code = UtilityCode(
7414 static PyObject *__Pyx_GetName(PyObject *dict, PyObject *name); /*proto*/
7417 static PyObject *__Pyx_GetName(PyObject *dict, PyObject *name) {
7419 result = PyObject_GetAttr(dict, name);
7421 PyErr_SetObject(PyExc_NameError, name);
7426 #------------------------------------------------------------------------------------
7428 import_utility_code = UtilityCode(
7430 static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list); /*proto*/
7433 static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list) {
7434 PyObject *py_import = 0;
7435 PyObject *empty_list = 0;
7436 PyObject *module = 0;
7437 PyObject *global_dict = 0;
7438 PyObject *empty_dict = 0;
7440 py_import = __Pyx_GetAttrString(%(BUILTINS)s, "__import__");
7446 empty_list = PyList_New(0);
7451 global_dict = PyModule_GetDict(%(GLOBALS)s);
7454 empty_dict = PyDict_New();
7457 module = PyObject_CallFunctionObjArgs(py_import,
7458 name, global_dict, empty_dict, list, NULL);
7460 Py_XDECREF(empty_list);
7461 Py_XDECREF(py_import);
7462 Py_XDECREF(empty_dict);
7466 "BUILTINS": Naming.builtins_cname,
7467 "GLOBALS": Naming.module_cname,
7470 #------------------------------------------------------------------------------------
7472 get_exception_utility_code = UtilityCode(
7474 static PyObject *__Pyx_GetExcValue(void); /*proto*/
7477 static PyObject *__Pyx_GetExcValue(void) {
7478 PyObject *type = 0, *value = 0, *tb = 0;
7479 PyObject *tmp_type, *tmp_value, *tmp_tb;
7480 PyObject *result = 0;
7481 PyThreadState *tstate = PyThreadState_Get();
7482 PyErr_Fetch(&type, &value, &tb);
7483 PyErr_NormalizeException(&type, &value, &tb);
7484 if (PyErr_Occurred())
7490 tmp_type = tstate->exc_type;
7491 tmp_value = tstate->exc_value;
7492 tmp_tb = tstate->exc_traceback;
7493 tstate->exc_type = type;
7494 tstate->exc_value = value;
7495 tstate->exc_traceback = tb;
7496 /* Make sure tstate is in a consistent state when we XDECREF
7497 these objects (XDECREF may run arbitrary code). */
7498 Py_XDECREF(tmp_type);
7499 Py_XDECREF(tmp_value);
7514 #------------------------------------------------------------------------------------
7516 type_test_utility_code = UtilityCode(
7518 static CYTHON_INLINE int __Pyx_TypeTest(PyObject *obj, PyTypeObject *type); /*proto*/
7521 static CYTHON_INLINE int __Pyx_TypeTest(PyObject *obj, PyTypeObject *type) {
7522 if (unlikely(!type)) {
7523 PyErr_Format(PyExc_SystemError, "Missing type object");
7526 if (likely(PyObject_TypeCheck(obj, type)))
7528 PyErr_Format(PyExc_TypeError, "Cannot convert %.200s to %.200s",
7529 Py_TYPE(obj)->tp_name, type->tp_name);
7534 #------------------------------------------------------------------------------------
7536 find_py2_metaclass_utility_code = UtilityCode(
7538 static PyObject *__Pyx_FindPy2Metaclass(PyObject *bases); /*proto*/
7541 static PyObject *__Pyx_FindPy2Metaclass(PyObject *bases) {
7542 PyObject *metaclass;
7543 /* Default metaclass */
7544 #if PY_MAJOR_VERSION < 3
7545 if (PyTuple_Check(bases) && PyTuple_GET_SIZE(bases) > 0) {
7546 PyObject *base = PyTuple_GET_ITEM(bases, 0);
7547 metaclass = PyObject_GetAttrString(base, "__class__");
7550 metaclass = (PyObject*) Py_TYPE(base);
7553 metaclass = (PyObject *) &PyClass_Type;
7556 if (PyTuple_Check(bases) && PyTuple_GET_SIZE(bases) > 0) {
7557 PyObject *base = PyTuple_GET_ITEM(bases, 0);
7558 metaclass = (PyObject*) Py_TYPE(base);
7560 metaclass = (PyObject *) &PyType_Type;
7563 Py_INCREF(metaclass);
7568 create_class_utility_code = UtilityCode(
7570 static PyObject *__Pyx_CreateClass(PyObject *bases, PyObject *dict, PyObject *name,
7571 PyObject *modname); /*proto*/
7574 static PyObject *__Pyx_CreateClass(PyObject *bases, PyObject *dict, PyObject *name,
7575 PyObject *modname) {
7577 PyObject *metaclass;
7579 if (PyDict_SetItemString(dict, "__module__", modname) < 0)
7582 /* Python2 __metaclass__ */
7583 metaclass = PyDict_GetItemString(dict, "__metaclass__");
7585 Py_INCREF(metaclass);
7587 metaclass = __Pyx_FindPy2Metaclass(bases);
7589 result = PyObject_CallFunctionObjArgs(metaclass, name, bases, dict, NULL);
7590 Py_DECREF(metaclass);
7594 requires = [find_py2_metaclass_utility_code])
7596 #------------------------------------------------------------------------------------
7598 create_py3class_utility_code = UtilityCode(
7600 static PyObject *__Pyx_Py3MetaclassGet(PyObject *bases, PyObject *mkw); /*proto*/
7601 static PyObject *__Pyx_Py3MetaclassPrepare(PyObject *metaclass, PyObject *bases, PyObject *name, PyObject *mkw, PyObject *modname, PyObject *doc); /*proto*/
7602 static PyObject *__Pyx_Py3ClassCreate(PyObject *metaclass, PyObject *name, PyObject *bases, PyObject *dict, PyObject *mkw); /*proto*/
7605 PyObject *__Pyx_Py3MetaclassGet(PyObject *bases, PyObject *mkw) {
7606 PyObject *metaclass = PyDict_GetItemString(mkw, "metaclass");
7608 Py_INCREF(metaclass);
7609 if (PyDict_DelItemString(mkw, "metaclass") < 0) {
7610 Py_DECREF(metaclass);
7615 return __Pyx_FindPy2Metaclass(bases);
7618 PyObject *__Pyx_Py3MetaclassPrepare(PyObject *metaclass, PyObject *bases, PyObject *name, PyObject *mkw,
7619 PyObject *modname, PyObject *doc) {
7625 prep = PyObject_GetAttrString(metaclass, "__prepare__");
7627 if (!PyErr_ExceptionMatches(PyExc_AttributeError))
7630 return PyDict_New();
7632 pargs = PyTuple_New(2);
7640 PyTuple_SET_ITEM(pargs, 0, name);
7641 PyTuple_SET_ITEM(pargs, 1, bases);
7643 ns = PyObject_Call(prep, pargs, mkw);
7651 /* Required here to emulate assignment order */
7652 /* XXX: use consts here */
7653 #if PY_MAJOR_VERSION >= 3
7654 str = PyUnicode_FromString("__module__");
7656 str = PyString_FromString("__module__");
7663 if (PyObject_SetItem(ns, str, modname) < 0) {
7670 #if PY_MAJOR_VERSION >= 3
7671 str = PyUnicode_FromString("__doc__");
7673 str = PyString_FromString("__doc__");
7679 if (PyObject_SetItem(ns, str, doc) < 0) {
7689 PyObject *__Pyx_Py3ClassCreate(PyObject *metaclass, PyObject *name, PyObject *bases, PyObject *dict, PyObject *mkw) {
7691 PyObject *margs = PyTuple_New(3);
7697 PyTuple_SET_ITEM(margs, 0, name);
7698 PyTuple_SET_ITEM(margs, 1, bases);
7699 PyTuple_SET_ITEM(margs, 2, dict);
7700 result = PyObject_Call(metaclass, margs, mkw);
7705 requires = [find_py2_metaclass_utility_code])
7707 #------------------------------------------------------------------------------------
7709 cpp_exception_utility_code = UtilityCode(
7711 #ifndef __Pyx_CppExn2PyErr
7712 static void __Pyx_CppExn2PyErr() {
7714 if (PyErr_Occurred())
7715 ; // let the latest Python exn pass through and ignore the current one
7718 } catch (const std::invalid_argument& exn) {
7719 // Catch a handful of different errors here and turn them into the
7720 // equivalent Python errors.
7721 // Change invalid_argument to ValueError
7722 PyErr_SetString(PyExc_ValueError, exn.what());
7723 } catch (const std::out_of_range& exn) {
7724 // Change out_of_range to IndexError
7725 PyErr_SetString(PyExc_IndexError, exn.what());
7726 } catch (const std::exception& exn) {
7727 PyErr_SetString(PyExc_RuntimeError, exn.what());
7731 PyErr_SetString(PyExc_RuntimeError, "Unknown exception");
7739 pyerr_occurred_withgil_utility_code= UtilityCode(
7741 static CYTHON_INLINE int __Pyx_ErrOccurredWithGIL(void); /* proto */
7744 static CYTHON_INLINE int __Pyx_ErrOccurredWithGIL(void) {
7747 PyGILState_STATE _save = PyGILState_Ensure();
7749 err = !!PyErr_Occurred();
7751 PyGILState_Release(_save);
7758 #------------------------------------------------------------------------------------
7760 raise_noneattr_error_utility_code = UtilityCode(
7762 static CYTHON_INLINE void __Pyx_RaiseNoneAttributeError(const char* attrname);
7765 static CYTHON_INLINE void __Pyx_RaiseNoneAttributeError(const char* attrname) {
7766 PyErr_Format(PyExc_AttributeError, "'NoneType' object has no attribute '%s'", attrname);
7770 raise_noneindex_error_utility_code = UtilityCode(
7772 static CYTHON_INLINE void __Pyx_RaiseNoneIndexingError(void);
7775 static CYTHON_INLINE void __Pyx_RaiseNoneIndexingError(void) {
7776 PyErr_SetString(PyExc_TypeError, "'NoneType' object is unsubscriptable");
7780 raise_none_iter_error_utility_code = UtilityCode(
7782 static CYTHON_INLINE void __Pyx_RaiseNoneNotIterableError(void);
7785 static CYTHON_INLINE void __Pyx_RaiseNoneNotIterableError(void) {
7786 PyErr_SetString(PyExc_TypeError, "'NoneType' object is not iterable");
7790 #------------------------------------------------------------------------------------
7792 getitem_dict_utility_code = UtilityCode(
7794 #if PY_MAJOR_VERSION >= 3
7795 static PyObject *__Pyx_PyDict_GetItem(PyObject *d, PyObject* key) {
7797 if (unlikely(d == Py_None)) {
7798 __Pyx_RaiseNoneIndexingError();
7801 value = PyDict_GetItemWithError(d, key);
7802 if (unlikely(!value)) {
7803 if (!PyErr_Occurred())
7804 PyErr_SetObject(PyExc_KeyError, key);
7811 #define __Pyx_PyDict_GetItem(d, key) PyObject_GetItem(d, key)
7814 requires = [raise_noneindex_error_utility_code])
7816 #------------------------------------------------------------------------------------
7818 getitem_int_pyunicode_utility_code = UtilityCode(
7820 #define __Pyx_GetItemInt_Unicode(o, i, size, to_py_func) (((size) <= sizeof(Py_ssize_t)) ? \\
7821 __Pyx_GetItemInt_Unicode_Fast(o, i) : \\
7822 __Pyx_GetItemInt_Unicode_Generic(o, to_py_func(i)))
7824 static CYTHON_INLINE Py_UNICODE __Pyx_GetItemInt_Unicode_Fast(PyObject* ustring, Py_ssize_t i) {
7825 if (likely((0 <= i) & (i < PyUnicode_GET_SIZE(ustring)))) {
7826 return PyUnicode_AS_UNICODE(ustring)[i];
7827 } else if ((-PyUnicode_GET_SIZE(ustring) <= i) & (i < 0)) {
7828 i += PyUnicode_GET_SIZE(ustring);
7829 return PyUnicode_AS_UNICODE(ustring)[i];
7831 PyErr_SetString(PyExc_IndexError, "string index out of range");
7832 return (Py_UNICODE)-1;
7836 static CYTHON_INLINE Py_UNICODE __Pyx_GetItemInt_Unicode_Generic(PyObject* ustring, PyObject* j) {
7838 PyObject *uchar_string;
7839 if (!j) return (Py_UNICODE)-1;
7840 uchar_string = PyObject_GetItem(ustring, j);
7842 if (!uchar_string) return (Py_UNICODE)-1;
7843 uchar = PyUnicode_AS_UNICODE(uchar_string)[0];
7844 Py_DECREF(uchar_string);
7849 getitem_int_utility_code = UtilityCode(
7852 static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Generic(PyObject *o, PyObject* j) {
7854 if (!j) return NULL;
7855 r = PyObject_GetItem(o, j);
7862 #define __Pyx_GetItemInt_%(type)s(o, i, size, to_py_func) (((size) <= sizeof(Py_ssize_t)) ? \\
7863 __Pyx_GetItemInt_%(type)s_Fast(o, i) : \\
7864 __Pyx_GetItemInt_Generic(o, to_py_func(i)))
7866 static CYTHON_INLINE PyObject *__Pyx_GetItemInt_%(type)s_Fast(PyObject *o, Py_ssize_t i) {
7867 if (likely(o != Py_None)) {
7868 if (likely((0 <= i) & (i < Py%(type)s_GET_SIZE(o)))) {
7869 PyObject *r = Py%(type)s_GET_ITEM(o, i);
7873 else if ((-Py%(type)s_GET_SIZE(o) <= i) & (i < 0)) {
7874 PyObject *r = Py%(type)s_GET_ITEM(o, Py%(type)s_GET_SIZE(o) + i);
7879 return __Pyx_GetItemInt_Generic(o, PyInt_FromSsize_t(i));
7881 """ % {'type' : type_name} for type_name in ('List', 'Tuple')
7884 #define __Pyx_GetItemInt(o, i, size, to_py_func) (((size) <= sizeof(Py_ssize_t)) ? \\
7885 __Pyx_GetItemInt_Fast(o, i) : \\
7886 __Pyx_GetItemInt_Generic(o, to_py_func(i)))
7888 static CYTHON_INLINE PyObject *__Pyx_GetItemInt_Fast(PyObject *o, Py_ssize_t i) {
7890 if (PyList_CheckExact(o) && ((0 <= i) & (i < PyList_GET_SIZE(o)))) {
7891 r = PyList_GET_ITEM(o, i);
7894 else if (PyTuple_CheckExact(o) && ((0 <= i) & (i < PyTuple_GET_SIZE(o)))) {
7895 r = PyTuple_GET_ITEM(o, i);
7898 else if (Py_TYPE(o)->tp_as_sequence && Py_TYPE(o)->tp_as_sequence->sq_item && (likely(i >= 0))) {
7899 r = PySequence_GetItem(o, i);
7902 r = __Pyx_GetItemInt_Generic(o, PyInt_FromSsize_t(i));
7912 #------------------------------------------------------------------------------------
7914 setitem_int_utility_code = UtilityCode(
7916 #define __Pyx_SetItemInt(o, i, v, size, to_py_func) (((size) <= sizeof(Py_ssize_t)) ? \\
7917 __Pyx_SetItemInt_Fast(o, i, v) : \\
7918 __Pyx_SetItemInt_Generic(o, to_py_func(i), v))
7920 static CYTHON_INLINE int __Pyx_SetItemInt_Generic(PyObject *o, PyObject *j, PyObject *v) {
7923 r = PyObject_SetItem(o, j, v);
7928 static CYTHON_INLINE int __Pyx_SetItemInt_Fast(PyObject *o, Py_ssize_t i, PyObject *v) {
7929 if (PyList_CheckExact(o) && ((0 <= i) & (i < PyList_GET_SIZE(o)))) {
7931 Py_DECREF(PyList_GET_ITEM(o, i));
7932 PyList_SET_ITEM(o, i, v);
7935 else if (Py_TYPE(o)->tp_as_sequence && Py_TYPE(o)->tp_as_sequence->sq_ass_item && (likely(i >= 0)))
7936 return PySequence_SetItem(o, i, v);
7938 PyObject *j = PyInt_FromSsize_t(i);
7939 return __Pyx_SetItemInt_Generic(o, j, v);
7946 #------------------------------------------------------------------------------------
7948 delitem_int_utility_code = UtilityCode(
7950 #define __Pyx_DelItemInt(o, i, size, to_py_func) (((size) <= sizeof(Py_ssize_t)) ? \\
7951 __Pyx_DelItemInt_Fast(o, i) : \\
7952 __Pyx_DelItem_Generic(o, to_py_func(i)))
7954 static CYTHON_INLINE int __Pyx_DelItem_Generic(PyObject *o, PyObject *j) {
7957 r = PyObject_DelItem(o, j);
7962 static CYTHON_INLINE int __Pyx_DelItemInt_Fast(PyObject *o, Py_ssize_t i) {
7963 if (Py_TYPE(o)->tp_as_sequence && Py_TYPE(o)->tp_as_sequence->sq_ass_item && likely(i >= 0))
7964 return PySequence_DelItem(o, i);
7966 PyObject *j = PyInt_FromSsize_t(i);
7967 return __Pyx_DelItem_Generic(o, j);
7974 #------------------------------------------------------------------------------------
7976 raise_too_many_values_to_unpack = UtilityCode(
7978 static CYTHON_INLINE void __Pyx_RaiseTooManyValuesError(Py_ssize_t expected);
7981 static CYTHON_INLINE void __Pyx_RaiseTooManyValuesError(Py_ssize_t expected) {
7982 PyErr_Format(PyExc_ValueError,
7983 #if PY_VERSION_HEX < 0x02050000
7984 "too many values to unpack (expected %d)", (int)expected);
7986 "too many values to unpack (expected %zd)", expected);
7991 raise_need_more_values_to_unpack = UtilityCode(
7993 static CYTHON_INLINE void __Pyx_RaiseNeedMoreValuesError(Py_ssize_t index);
7996 static CYTHON_INLINE void __Pyx_RaiseNeedMoreValuesError(Py_ssize_t index) {
7997 PyErr_Format(PyExc_ValueError,
7998 #if PY_VERSION_HEX < 0x02050000
7999 "need more than %d value%s to unpack", (int)index,
8001 "need more than %zd value%s to unpack", index,
8003 (index == 1) ? "" : "s");
8007 #------------------------------------------------------------------------------------
8009 tuple_unpacking_error_code = UtilityCode(
8011 static void __Pyx_UnpackTupleError(PyObject *, Py_ssize_t index); /*proto*/
8014 static void __Pyx_UnpackTupleError(PyObject *t, Py_ssize_t index) {
8016 __Pyx_RaiseNoneNotIterableError();
8017 } else if (PyTuple_GET_SIZE(t) < index) {
8018 __Pyx_RaiseNeedMoreValuesError(PyTuple_GET_SIZE(t));
8020 __Pyx_RaiseTooManyValuesError(index);
8024 requires = [raise_none_iter_error_utility_code,
8025 raise_need_more_values_to_unpack,
8026 raise_too_many_values_to_unpack]
8029 unpacking_utility_code = UtilityCode(
8031 static PyObject *__Pyx_UnpackItem(PyObject *, Py_ssize_t index); /*proto*/
8032 static int __Pyx_EndUnpack(PyObject *, Py_ssize_t expected); /*proto*/
8035 static PyObject *__Pyx_UnpackItem(PyObject *iter, Py_ssize_t index) {
8037 if (!(item = PyIter_Next(iter))) {
8038 if (!PyErr_Occurred()) {
8039 __Pyx_RaiseNeedMoreValuesError(index);
8045 static int __Pyx_EndUnpack(PyObject *iter, Py_ssize_t expected) {
8047 if ((item = PyIter_Next(iter))) {
8049 __Pyx_RaiseTooManyValuesError(expected);
8052 else if (!PyErr_Occurred())
8058 requires = [raise_need_more_values_to_unpack,
8059 raise_too_many_values_to_unpack]
8062 #------------------------------------------------------------------------------------
8064 # CPython supports calling functions with non-dict kwargs by
8065 # converting them to a dict first
8067 kwargs_call_utility_code = UtilityCode(
8069 static PyObject* __Pyx_PyEval_CallObjectWithKeywords(PyObject*, PyObject*, PyObject*); /*proto*/
8072 static PyObject* __Pyx_PyEval_CallObjectWithKeywords(PyObject *callable, PyObject *args, PyObject *kwargs) {
8074 if (likely(PyDict_Check(kwargs))) {
8075 return PyEval_CallObjectWithKeywords(callable, args, kwargs);
8077 PyObject* real_dict;
8078 real_dict = PyObject_CallFunctionObjArgs((PyObject*)&PyDict_Type, kwargs, NULL);
8079 if (unlikely(!real_dict))
8081 result = PyEval_CallObjectWithKeywords(callable, args, real_dict);
8082 Py_DECREF(real_dict);
8083 return result; /* may be NULL */
8090 #------------------------------------------------------------------------------------
8092 int_pow_utility_code = UtilityCode(
8094 static CYTHON_INLINE %(type)s %(func_name)s(%(type)s, %(type)s); /* proto */
8097 static CYTHON_INLINE %(type)s %(func_name)s(%(type)s b, %(type)s e) {
8109 if (unlikely(e<0)) return 0;
8112 t *= (b * (e&1)) | ((~e)&1); /* 1 or b */
8120 # ------------------------------ Division ------------------------------------
8122 div_int_utility_code = UtilityCode(
8124 static CYTHON_INLINE %(type)s __Pyx_div_%(type_name)s(%(type)s, %(type)s); /* proto */
8127 static CYTHON_INLINE %(type)s __Pyx_div_%(type_name)s(%(type)s a, %(type)s b) {
8129 %(type)s r = a - q*b;
8130 q -= ((r != 0) & ((r ^ b) < 0));
8135 mod_int_utility_code = UtilityCode(
8137 static CYTHON_INLINE %(type)s __Pyx_mod_%(type_name)s(%(type)s, %(type)s); /* proto */
8140 static CYTHON_INLINE %(type)s __Pyx_mod_%(type_name)s(%(type)s a, %(type)s b) {
8141 %(type)s r = a %% b;
8142 r += ((r != 0) & ((r ^ b) < 0)) * b;
8147 mod_float_utility_code = UtilityCode(
8149 static CYTHON_INLINE %(type)s __Pyx_mod_%(type_name)s(%(type)s, %(type)s); /* proto */
8152 static CYTHON_INLINE %(type)s __Pyx_mod_%(type_name)s(%(type)s a, %(type)s b) {
8153 %(type)s r = fmod%(math_h_modifier)s(a, b);
8154 r += ((r != 0) & ((r < 0) ^ (b < 0))) * b;
8159 cdivision_warning_utility_code = UtilityCode(
8161 static int __Pyx_cdivision_warning(void); /* proto */
8164 static int __Pyx_cdivision_warning(void) {
8165 return PyErr_WarnExplicit(PyExc_RuntimeWarning,
8166 "division with oppositely signed operands, C and Python semantics differ",
8173 'FILENAME': Naming.filename_cname,
8174 'LINENO': Naming.lineno_cname,
8178 division_overflow_test_code = UtilityCode(
8180 #define UNARY_NEG_WOULD_OVERFLOW(x) \
8181 (((x) < 0) & ((unsigned long)(x) == 0-(unsigned long)(x)))
8185 binding_cfunc_utility_code = UtilityCode(
8187 #define %(binding_cfunc)s_USED 1
8190 PyCFunctionObject func;
8191 } %(binding_cfunc)s_object;
8193 static PyTypeObject %(binding_cfunc)s_type;
8194 static PyTypeObject *%(binding_cfunc)s = NULL;
8196 static PyObject *%(binding_cfunc)s_NewEx(PyMethodDef *ml, PyObject *self, PyObject *module); /* proto */
8197 #define %(binding_cfunc)s_New(ml, self) %(binding_cfunc)s_NewEx(ml, self, NULL)
8199 static int %(binding_cfunc)s_init(void); /* proto */
8200 """ % Naming.__dict__,
8203 static PyObject *%(binding_cfunc)s_NewEx(PyMethodDef *ml, PyObject *self, PyObject *module) {
8204 %(binding_cfunc)s_object *op = PyObject_GC_New(%(binding_cfunc)s_object, %(binding_cfunc)s);
8209 op->func.m_self = self;
8211 op->func.m_module = module;
8212 PyObject_GC_Track(op);
8213 return (PyObject *)op;
8216 static void %(binding_cfunc)s_dealloc(%(binding_cfunc)s_object *m) {
8217 PyObject_GC_UnTrack(m);
8218 Py_XDECREF(m->func.m_self);
8219 Py_XDECREF(m->func.m_module);
8223 static PyObject *%(binding_cfunc)s_descr_get(PyObject *func, PyObject *obj, PyObject *type) {
8226 return PyMethod_New(func, obj, type);
8229 static int %(binding_cfunc)s_init(void) {
8230 %(binding_cfunc)s_type = PyCFunction_Type;
8231 %(binding_cfunc)s_type.tp_name = __Pyx_NAMESTR("cython_binding_builtin_function_or_method");
8232 %(binding_cfunc)s_type.tp_dealloc = (destructor)%(binding_cfunc)s_dealloc;
8233 %(binding_cfunc)s_type.tp_descr_get = %(binding_cfunc)s_descr_get;
8234 if (PyType_Ready(&%(binding_cfunc)s_type) < 0) {
8237 %(binding_cfunc)s = &%(binding_cfunc)s_type;
8241 """ % Naming.__dict__)