Removed pyrex, which is no longer required

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>

1 files changed, 0 insertions, 3954 deletions

diff --git a/debian/pyrex/pyrex-0.9.9/Pyrex/Compiler/ExprNodes.py b/debian/pyrex/pyrex-0.9.9/Pyrex/Compiler/ExprNodes.py
deleted file mode 100644
index c2848286..00000000
--- a/debian/pyrex/pyrex-0.9.9/Pyrex/Compiler/ExprNodes.py
+++ /dev/null
@@ -1,3954 +0,0 @@
-#
-#   Pyrex - Parse tree nodes for expressions
-#
-
-import operator
-from string import join
-
-from Errors import error, InternalError
-import Naming
-from Nodes import Node
-import PyrexTypes
-from PyrexTypes import py_object_type, c_long_type, typecast, error_type, \
-    CPtrType, CFuncType, COverloadedFuncType
-import Symtab
-import Options
-
-from Pyrex.Debugging import print_call_chain
-from DebugFlags import debug_disposal_code, debug_temp_alloc, \
-    debug_coercion
-
-class ExprNode(Node):
-    #  subexprs     [string]     Class var holding names of subexpr node attrs
-    #  type         PyrexType    Type of the result
-    #  result_code  string       Code fragment
-    #  result_ctype string       C type of result_code if different from type
-    #  inplace_result  string    Temp var holding in-place operation result
-    #  is_temp      boolean      Result is in a temporary variable
-    #  is_sequence_constructor  
-    #               boolean      Is a list or tuple constructor expression
-    #  saved_subexpr_nodes
-    #               [ExprNode or [ExprNode or None] or None]
-    #                            Cached result of subexpr_nodes()
-    
-    result_ctype = None
-
-    #  The Analyse Expressions phase for expressions is split
-    #  into two sub-phases:
-    #
-    #    Analyse Types
-    #      Determines the result type of the expression based
-    #      on the types of its sub-expressions, and inserts
-    #      coercion nodes into the expression tree where needed.
-    #      Marks nodes which will need to have temporary variables
-    #      allocated.
-    #
-    #    Allocate Temps
-    #      Allocates temporary variables where needed, and fills
-    #      in the result_code field of each node.
-    #
-    #  ExprNode provides some convenience routines which
-    #  perform both of the above phases. These should only
-    #  be called from statement nodes, and only when no
-    #  coercion nodes need to be added around the expression
-    #  being analysed. If coercion is needed, the above two phases
-    #  should be invoked separately.
-    #
-    #  Framework code in ExprNode provides much of the common
-    #  processing for the various phases. It makes use of the
-    #  'subexprs' class attribute of ExprNodes, which should
-    #  contain a list of the names of attributes which can
-    #  hold sub-nodes or sequences of sub-nodes.
-    #  
-    #  The framework makes use of a number of abstract methods. 
-    #  Their responsibilities are as follows.
-    #
-    #    Declaration Analysis phase
-    #
-    #      analyse_target_declaration
-    #        Called during the Analyse Declarations phase to analyse
-    #        the LHS of an assignment or argument of a del statement.
-    #        Nodes which cannot be the LHS of an assignment need not
-    #        implement it.
-    #
-    #    Expression Analysis phase
-    #
-    #      analyse_types
-    #        - Call analyse_types on all sub-expressions.
-    #        - Check operand types, and wrap coercion nodes around
-    #          sub-expressions where needed.
-    #        - Set the type of this node.
-    #        - If a temporary variable will be required for the
-    #          result, set the is_temp flag of this node.
-    #
-    #      analyse_target_types
-    #        Called during the Analyse Types phase to analyse
-    #        the LHS of an assignment or argument of a del 
-    #        statement. Similar responsibilities to analyse_types.
-    #
-    #      allocate_temps
-    #        - Call allocate_temps for all sub-nodes.
-    #        - Call allocate_temp for this node.
-    #        - If a temporary was allocated, call release_temp on 
-    #          all sub-expressions.
-    #
-    #      allocate_target_temps
-    #        - Call allocate_temps on sub-nodes and allocate any other
-    #          temps used during assignment.
-    #        - Fill in result_code with a C lvalue if needed.
-    #        - If a rhs node is supplied, call release_temp on it.
-    #        - Call release_temp on sub-nodes and release any other
-    #          temps used during assignment.
-    #
-    #      #calculate_result_code
-    #      #  - Called during the Allocate Temps phase. Should return a
-    #      #    C code fragment evaluating to the result. This is only
-    #      #    called when the result is not a temporary.
-    #
-    #      target_code
-    #        Called by the default implementation of allocate_target_temps.
-    #        Should return a C lvalue for assigning to the node. The default
-    #        implementation calls calculate_result_code.
-    #
-    #      check_const
-    #        - Check that this node and its subnodes form a
-    #          legal constant expression. If so, do nothing,
-    #          otherwise call not_const. 
-    #
-    #        The default implementation of check_const 
-    #        assumes that the expression is not constant.
-    #
-    #      check_const_addr
-    #        - Same as check_const, except check that the
-    #          expression is a C lvalue whose address is
-    #          constant. Otherwise, call addr_not_const.
-    #
-    #        The default implementation of calc_const_addr
-    #        assumes that the expression is not a constant 
-    #        lvalue.
-    #
-    #   Code Generation phase
-    #
-    #      generate_evaluation_code
-    #        1. Call generate_evaluation_code for sub-expressions.
-    #        2. Generate any C statements necessary to calculate
-    #           the result of this node from the results of its
-    #           sub-expressions. If result is not in a temporary, record
-    #           any information that will be needed by this node's
-    #           implementation of calculate_result_code().
-    #        4. If result is in a temporary, call generate_disposal_code
-    #           on all sub-expressions.
-    #
-    #        A default implementation of generate_evaluation_code
-    #        is provided which uses the folling abstract methods:
-    #            generate_result_code (for no. 2)
-    #
-    #      generate_assignment_code
-    #        Called on the LHS of an assignment.
-    #        - Call generate_evaluation_code for sub-expressions.
-    #        - Generate code to perform the assignment.
-    #        - If the assignment absorbed a reference, call
-    #          generate_post_assignment_code on the RHS,
-    #          otherwise call generate_disposal_code on it.
-    #
-    #      generate_deletion_code
-    #        Called on an argument of a del statement.
-    #        - Call generate_evaluation_code for sub-expressions.
-    #        - Generate code to perform the deletion.
-    #        - Call generate_disposal_code on all sub-expressions.
-    #
-    #      calculate_result_code
-    #        Return a C code fragment representing the result of this node.
-    #        This is only called if the result is not in a temporary.
-    #
-    
-    is_sequence_constructor = 0
-    is_attribute = 0
-    
-    saved_subexpr_nodes = None
-    is_temp = 0
-
-    def not_implemented(self, method_name):
-        print_call_chain(method_name, "not implemented") ###
-        raise InternalError(
-            "%s.%s not implemented" %
-                (self.__class__.__name__, method_name))		
-                
-    def is_lvalue(self):
-        return 0
-    
-    def is_inplace_lvalue(self):
-        return 0
-    
-    def is_ephemeral(self):
-        #  An ephemeral node is one whose result is in
-        #  a Python temporary and we suspect there are no
-        #  other references to it. Certain operations are
-        #  disallowed on such values, since they are
-        #  likely to result in a dangling pointer.
-        return self.type.is_pyobject and self.is_temp
-
-    def subexpr_nodes(self):
-        #  Extract a list of subexpression nodes based
-        #  on the contents of the subexprs class attribute.
-        if self.saved_subexpr_nodes is None:
-            nodes = []
-            for name in self.subexprs:
-                item = getattr(self, name)
-                if item:
-                    if isinstance(item, ExprNode):
-                        nodes.append(item)
-                    else:
-                        nodes.extend(item)
-            self.saved_subexpr_nodes = nodes
-        return self.saved_subexpr_nodes
-    
-    def result(self):
-        #  Return a C code fragment for the result of this node.
-        if self.is_temp:
-            result_code = self.result_code
-        else:
-            result_code = self.calculate_result_code()
-        return result_code
-    
-    def result_as(self, type = None):
-        #  Return the result code cast to the specified C type.
-        return typecast(type, self.ctype(), self.result())
-    
-    def py_result(self):
-        #  Return the result code cast to PyObject *.
-        return self.result_as(py_object_type)
-    
-    def ctype(self):
-        #  Return the native C type of the result.
-        return self.result_ctype or self.type
-    
-    def compile_time_value(self, denv):
-        #  Return value of compile-time expression, or report error.
-        error(self.pos, "Invalid compile-time expression")
-    
-    def compile_time_value_error(self, e):
-        error(self.pos, "Error in compile-time expression: %s: %s" % (
-            e.__class__.__name__, e))
-    
-    # ------------- Declaration Analysis ----------------
-    
-    def analyse_target_declaration(self, env):
-        error(self.pos, "Cannot assign to or delete this")
-    
-    # ------------- Expression Analysis ----------------
-    
-    def analyse_const_expression(self, env):
-        #  Called during the analyse_declarations phase of a
-        #  constant expression. Analyses the expression's type,
-        #  checks whether it is a legal const expression,
-        #  and determines its value.
-        self.analyse_types(env)
-        self.allocate_temps(env)
-        self.check_const()
-    
-    def analyse_expressions(self, env):
-        #  Convenience routine performing both the Type
-        #  Analysis and Temp Allocation phases for a whole 
-        #  expression.
-        self.analyse_types(env)
-        self.allocate_temps(env)
-    
-    def analyse_target_expression(self, env, rhs):
-        #  Convenience routine performing both the Type
-        #  Analysis and Temp Allocation phases for the LHS of
-        #  an assignment.
-        self.analyse_target_types(env)
-        self.allocate_target_temps(env, rhs)
-    
-    def analyse_boolean_expression(self, env):
-        #  Analyse expression and coerce to a boolean.
-        self.analyse_types(env)
-        bool = self.coerce_to_boolean(env)
-        bool.allocate_temps(env)
-        return bool
-    
-    def analyse_temp_boolean_expression(self, env):
-        #  Analyse boolean expression and coerce result into
-        #  a temporary. This is used when a branch is to be
-        #  performed on the result and we won't have an
-        #  opportunity to ensure disposal code is executed
-        #  afterwards. By forcing the result into a temporary,
-        #  we ensure that all disposal has been done by the
-        #  time we get the result.
-        self.analyse_types(env)
-        bool = self.coerce_to_boolean(env)
-        temp_bool = bool.coerce_to_temp(env)
-        temp_bool.allocate_temps(env)
-        return temp_bool
-    
-    # --------------- Type Analysis ------------------
-    
-    def analyse_as_function(self, env):
-        # Analyse types for an expression that is to be called.
-        self.analyse_types(env)
-    
-    def analyse_as_module(self, env):
-        # If this node can be interpreted as a reference to a
-        # cimported module, return its scope, else None.
-        return None
-    
-    def analyse_as_extension_type(self, env):
-        # If this node can be interpreted as a reference to an
-        # extension type, return its type, else None.
-        return None
-    
-    def analyse_as_cimported_attribute(self, env, *args, **kwds):
-        # If this node can be interpreted as a cimported name,
-        # finish type analysis and return true, else return false.
-        return 0
-    
-    def analyse_types(self, env):
-        self.not_implemented("analyse_types")
-    
-    def analyse_target_types(self, env):
-        self.analyse_types(env)
-    
-    def analyse_inplace_types(self, env):
-        if self.is_inplace_lvalue():
-            self.analyse_types(env)
-        else:
-            error(self.pos, "Invalid target for in-place operation")
-            self.type = error_type
-    
-    def gil_assignment_check(self, env):
-        if env.nogil and self.type.is_pyobject:
-            error(self.pos, "Assignment of Python object not allowed without gil")
-    
-    def check_const(self):
-        self.not_const()
-    
-    def not_const(self):
-        error(self.pos, "Not allowed in a constant expression")
-    
-    def check_const_addr(self):
-        self.addr_not_const()
-    
-    def addr_not_const(self):
-        error(self.pos, "Address is not constant")
-    
-    def gil_check(self, env):
-        if env.nogil and self.type.is_pyobject:
-            self.gil_error()
-    
-    # ----------------- Result Allocation -----------------
-    
-    def result_in_temp(self):
-        #  Return true if result is in a temporary owned by
-        #  this node or one of its subexpressions. Overridden
-        #  by certain nodes which can share the result of
-        #  a subnode.
-        return self.is_temp
-            
-    def allocate_target_temps(self, env, rhs, inplace = 0):
-        #  Perform temp allocation for the LHS of an assignment.
-        if debug_temp_alloc:
-            print self, "Allocating target temps"
-        self.allocate_subexpr_temps(env)
-        #self.result_code = self.target_code()
-        if rhs:
-            rhs.release_temp(env)
-        self.release_subexpr_temps(env)
-    
-    def allocate_inplace_target_temps(self, env, rhs):
-        if debug_temp_alloc:
-            print self, "Allocating inplace target temps"
-        self.allocate_subexpr_temps(env)
-        #self.result_code = self.target_code()
-        py_inplace = self.type.is_pyobject
-        if py_inplace:
-            self.allocate_temp(env)
-            self.inplace_result = env.allocate_temp(py_object_type)
-            self.release_temp(env)
-        rhs.release_temp(env)
-        if py_inplace:
-            env.release_temp(self.inplace_result)
-        self.release_subexpr_temps(env)
-    
-    def allocate_temps(self, env, result = None):
-        #  Allocate temporary variables for this node and
-        #  all its sub-expressions. If a result is specified,
-        #  this must be a temp node and the specified variable
-        #  is used as the result instead of allocating a new
-        #  one.
-        if debug_temp_alloc:
-            print self, "Allocating temps"
-        self.allocate_subexpr_temps(env)
-        self.allocate_temp(env, result)
-        if self.is_temp:
-            self.release_subexpr_temps(env)
-    
-    def allocate_subexpr_temps(self, env):
-        #  Allocate temporary variables for all sub-expressions
-        #  of this node.
-        if debug_temp_alloc:
-            print self, "Allocating temps for:", self.subexprs
-        for node in self.subexpr_nodes():
-            if node:
-                if debug_temp_alloc:
-                    print self, "Allocating temps for", node
-                node.allocate_temps(env)
-    
-    def allocate_temp(self, env, result = None):
-        #  If this node requires a temporary variable for its
-        #  result, allocate one. If a result is specified,
-        #  this must be a temp node and the specified variable
-        #  is used as the result instead of allocating a new
-        #  one.
-        if debug_temp_alloc:
-            print self, "Allocating temp"
-        if result:
-            if not self.is_temp:
-                raise InternalError("Result forced on non-temp node")
-            self.result_code = result
-        elif self.is_temp:
-            type = self.type
-            if not type.is_void:
-                if type.is_pyobject:
-                    type = PyrexTypes.py_object_type
-                self.result_code = env.allocate_temp(type)
-            else:
-                self.result_code = None
-            if debug_temp_alloc:
-                print self, "Allocated result", self.result_code
-        #else:
-        #	self.result_code = self.calculate_result_code()
-    
-    def target_code(self):
-        #  Return code fragment for use as LHS of a C assignment.
-        return self.calculate_result_code()
-    
-    def calculate_result_code(self):
-        self.not_implemented("calculate_result_code")
-
-    def release_temp(self, env):
-        #  If this node owns a temporary result, release it,
-        #  otherwise release results of its sub-expressions.
-        if self.is_temp:
-            if debug_temp_alloc:
-                print self, "Releasing result", self.result_code
-            env.release_temp(self.result_code)
-        else:
-            self.release_subexpr_temps(env)
-    
-    def release_subexpr_temps(self, env):
-        #  Release the results of all sub-expressions of
-        #  this node.
-        for node in self.subexpr_nodes():
-            if node:
-                node.release_temp(env)
-    
-    # ---------------- Code Generation -----------------
-    
-    def mark_vars_used(self):
-        for node in self.subexpr_nodes():
-            node.mark_vars_used()
-    
-    def make_owned_reference(self, code):
-        #  If result is a pyobject, make sure we own
-        #  a reference to it.
-        if self.type.is_pyobject and not self.result_in_temp():
-            code.put_incref(self.py_result())
-    
-    def generate_evaluation_code(self, code):
-        #  Generate code to evaluate this node and
-        #  its sub-expressions, and dispose of any
-        #  temporary results of its sub-expressions.
-        self.generate_subexpr_evaluation_code(code)
-        self.generate_result_code(code)
-        if self.is_temp:
-            self.generate_subexpr_disposal_code(code)
-    
-    def generate_subexpr_evaluation_code(self, code):
-        for node in self.subexpr_nodes():
-            node.generate_evaluation_code(code)
-    
-    def generate_result_code(self, code):
-        self.not_implemented("generate_result_code")
-    
-    inplace_functions = {
-        "+=": "PyNumber_InPlaceAdd",
-        "-=": "PyNumber_InPlaceSubtract",
-        "*=": "PyNumber_InPlaceMultiply",
-        "/=": "PyNumber_InPlaceDivide",
-        "%=": "PyNumber_InPlaceRemainder",
-        "**=": "PyNumber_InPlacePower",
-        "<<=": "PyNumber_InPlaceLshift",
-        ">>=": "PyNumber_InPlaceRshift",
-        "&=": "PyNumber_InPlaceAnd",
-        "^=": "PyNumber_InPlaceXor",
-        "|=": "PyNumber_InPlaceOr",
-    }
-    
-    def generate_inplace_operation_code(self, operator, rhs, code):
-        args = (self.py_result(), rhs.py_result())
-        if operator == "**=":
-            arg_code = "%s, %s, Py_None" % args
-        else:
-            arg_code = "%s, %s" % args
-        code.putln("%s = %s(%s); if (!%s) %s" % (
-            self.inplace_result,
-            self.inplace_functions[operator],
-            arg_code,
-            self.inplace_result,
-            code.error_goto(self.pos)))
-        if self.is_temp:
-            code.put_decref_clear(self.py_result())
-        rhs.generate_disposal_code(code)
-        if self.type.is_extension_type:
-            code.putln(
-                "if (!__Pyx_TypeTest(%s, %s)) %s" % (
-                    self.inplace_result,
-                    self.type.typeptr_cname,
-                    code.error_goto(self.pos)))
-    
-    def generate_disposal_code(self, code):
-        # If necessary, generate code to dispose of 
-        # temporary Python reference.
-        if self.is_temp:
-            if self.type.is_pyobject:
-                code.put_decref_clear(self.py_result(), self.ctype())
-        else:
-            self.generate_subexpr_disposal_code(code)
-    
-    def generate_subexpr_disposal_code(self, code):
-        #  Generate code to dispose of temporary results
-        #  of all sub-expressions.
-        for node in self.subexpr_nodes():
-            node.generate_disposal_code(code)
-    
-    def generate_post_assignment_code(self, code):
-        # Same as generate_disposal_code except that
-        # assignment will have absorbed a reference to
-        # the result if it is a Python object.
-        if self.is_temp:
-            if self.type.is_pyobject:
-                code.putln("%s = 0;" % self.result())
-        else:
-            self.generate_subexpr_disposal_code(code)
-    
-    def generate_inplace_result_disposal_code(self, code):
-        code.put_decref_clear(self.inplace_result, py_object_type)
-    
-    def generate_assignment_code(self, rhs, code):
-        #  Stub method for nodes which are not legal as
-        #  the LHS of an assignment. An error will have 
-        #  been reported earlier.
-        pass
-    
-    def generate_deletion_code(self, code):
-        #  Stub method for nodes that are not legal as
-        #  the argument of a del statement. An error
-        #  will have been reported earlier.
-        pass
-    
-    # ----------------- Coercion ----------------------
-    
-    def coerce_to(self, dst_type, env):
-        #   Coerce the result so that it can be assigned to
-        #   something of type dst_type. If processing is necessary,
-        #   wraps this node in a coercion node and returns that.
-        #   Otherwise, returns this node unchanged.
-        #
-        #   This method is called during the analyse_expressions
-        #   phase of the src_node's processing.
-        src = self
-        src_type = self.type
-        src_is_py_type = src_type.is_pyobject
-        dst_is_py_type = dst_type.is_pyobject
-        
-        if dst_type.is_pyobject:
-            if not src.type.is_pyobject:
-                src = CoerceToPyTypeNode(src, env)
-            if not src.type.subtype_of(dst_type):
-                if not isinstance(src, NoneNode):
-                    src = PyTypeTestNode(src, dst_type, env)
-        elif src.type.is_pyobject:
-            src = CoerceFromPyTypeNode(dst_type, src, env)
-        else: # neither src nor dst are py types
-            if not dst_type.assignable_from(src_type):
-                error(self.pos, "Cannot assign type '%s' to '%s'" %
-                    (src.type, dst_type))
-        return src
-
-    def coerce_to_pyobject(self, env):
-        return self.coerce_to(PyrexTypes.py_object_type, env)
-
-    def coerce_to_boolean(self, env):
-        #  Coerce result to something acceptable as
-        #  a boolean value.
-        type = self.type
-        if type.is_pyobject or type.is_ptr or type.is_float:
-            return CoerceToBooleanNode(self, env)
-        else:
-            if not type.is_int and not type.is_error:
-                error(self.pos, 
-                    "Type '%s' not acceptable as a boolean" % type)
-            return self
-    
-    def coerce_to_integer(self, env):
-        # If not already some C integer type, coerce to longint.
-        if self.type.is_int:
-            return self
-        else:
-            return self.coerce_to(PyrexTypes.c_long_type, env)
-    
-    def coerce_to_temp(self, env):
-        #  Ensure that the result is in a temporary.
-        if self.result_in_temp():
-            return self
-        else:
-            return CoerceToTempNode(self, env)
-    
-    def coerce_to_simple(self, env):
-        #  Ensure that the result is simple (see is_simple).
-        if self.is_simple():
-            return self
-        else:
-            return self.coerce_to_temp(env)
-    
-    def is_simple(self):
-        #  A node is simple if its result is something that can
-        #  be referred to without performing any operations, e.g.
-        #  a constant, local var, C global var, struct member
-        #  reference, or temporary.
-        return self.result_in_temp()
-
-
-class AtomicExprNode(ExprNode):
-    #  Abstract base class for expression nodes which have
-    #  no sub-expressions.
-    
-    subexprs = []
-
-
-class PyConstNode(AtomicExprNode):
-    #  Abstract base class for constant Python values.
-    
-    def is_simple(self):
-        return 1
-    
-    def analyse_types(self, env):
-        self.type = py_object_type
-    
-    def calculate_result_code(self):
-        return self.value
-
-    def generate_result_code(self, code):
-        pass
-
-
-class NoneNode(PyConstNode):
-    #  The constant value None
-    
-    value = "Py_None"
-    
-    def compile_time_value(self, denv):
-        return None
-    
-
-class EllipsisNode(PyConstNode):
-    #  '...' in a subscript list.
-    
-    value = "Py_Ellipsis"
-
-    def compile_time_value(self, denv):
-        return Ellipsis
-
-
-class ConstNode(AtomicExprNode):
-    # Abstract base type for literal constant nodes.
-    #
-    # value     string      C code fragment
-    
-    is_literal = 1
-    
-    def is_simple(self):
-        return 1
-    
-    def analyse_types(self, env):
-        pass # Types are held in class variables
-    
-    def check_const(self):
-        pass
-    
-    def calculate_result_code(self):
-        return str(self.value)
-
-    def generate_result_code(self, code):
-        pass
-
-
-class NullNode(ConstNode):
-    type = PyrexTypes.c_null_ptr_type
-    value = "NULL"
-
-
-class CharNode(ConstNode):
-    type = PyrexTypes.c_char_type
-    
-    def compile_time_value(self, denv):
-        return ord(self.value)
-    
-    def calculate_result_code(self):
-        return "'%s'" % self.value
-
-
-class IntNode(ConstNode):
-    type = PyrexTypes.c_long_type
-
-    def compile_time_value(self, denv):
-        return int(self.value, 0)
-    
-
-class FloatNode(ConstNode):
-    type = PyrexTypes.c_double_type
-
-    def compile_time_value(self, denv):
-        return float(self.value)
-    
-    def calculate_result_code(self):
-        strval = str(self.value)
-        if strval == 'nan':
-            return "NAN"
-        elif strval == 'inf':
-            return "INFINITY"
-        elif strval == '-inf':
-            return "(-INFINITY)"
-        else:
-            return strval
-
-
-class StringNode(ConstNode):
-    #  #entry   Symtab.Entry
-    
-    type = PyrexTypes.c_char_ptr_type
-    
-    def compile_time_value(self, denv):
-        return eval('"%s"' % self.value)
-    
-#	def analyse_types(self, env):
-#		self.entry = env.add_string_const(self.value)
-    
-    def coerce_to(self, dst_type, env):
-        # Arrange for a Python version of the string to be pre-allocated
-        # when coercing to a Python type.
-        if dst_type.is_pyobject and not self.type.is_pyobject:
-            node = self.as_py_string_node(env)
-        else:
-            node = self
-        # We still need to perform normal coerce_to processing on the
-        # result, because we might be coercing to an extension type,
-        # in which case a type test node will be needed.
-        return ConstNode.coerce_to(node, dst_type, env)
-
-    def as_py_string_node(self, env):
-        # Return a new StringNode with the same value as this node
-        # but whose type is a Python type instead of a C type.
-        #entry = self.entry
-        #env.add_py_string(entry)
-        return StringNode(self.pos, type = py_object_type, value = self.value)
-    
-    def generate_evaluation_code(self, code):
-        if self.type.is_pyobject:
-            self.result_code = code.get_py_string_const(self.value)
-        else:
-            self.result_code = code.get_string_const(self.value)
-            
-    def calculate_result_code(self):
-        return self.result_code
-
-
-class LongNode(AtomicExprNode):
-    #  Python long integer literal
-    #
-    #  value   string
-    
-    def compile_time_value(self, denv):
-        return long(self.value)
-    
-    gil_message = "Constructing Python long int"
-    
-    def analyse_types(self, env):
-        self.type = py_object_type
-        self.gil_check(env)
-        self.is_temp = 1
-    
-    def generate_evaluation_code(self, code):
-        result = self.result()
-        code.putln(
-            '%s = PyLong_FromString("%s", 0, 0); if (!%s) %s' % (
-                self.result(),
-                self.value,
-                self.result(),
-                code.error_goto(self.pos)))
-
-
-class ImagNode(AtomicExprNode):
-    #  Imaginary number literal
-    #
-    #  value   float    imaginary part
-    
-    def compile_time_value(self, denv):
-        return complex(0.0, self.value)
-    
-    gil_message = "Constructing complex number"
-    
-    def analyse_types(self, env):
-        self.type = py_object_type
-        self.gil_check(env)
-        self.is_temp = 1
-    
-    def generate_evaluation_code(self, code):
-        result = self.result()
-        code.putln(
-            "%s = PyComplex_FromDoubles(0.0, %s); if (!%s) %s" % (
-                self.result(),
-                self.value,
-                self.result(),
-                code.error_goto(self.pos)))
-
-
-class NameNode(AtomicExprNode):
-    #  Reference to a local or global variable name.
-    #
-    #  name            string    Python name of the variable
-    #
-    #  entry           Entry     Symbol table entry
-    #  type_entry      Entry     For extension type names, the original type entry
-    #  interned_cname  string
-    
-    is_name = 1
-    entry = None
-    type_entry = None
-    
-    def compile_time_value(self, denv):
-        try:
-            return denv.lookup(self.name)
-        except KeyError:
-            error(self.pos, "Compile-time name '%s' not defined" % self.name)
-    
-    def coerce_to(self, dst_type, env):
-        #  If coercing to a generic pyobject and this is a builtin
-        #  C function with a Python equivalent, manufacture a NameNode
-        #  referring to the Python builtin.
-        #print "NameNode.coerce_to:", self.name, dst_type ###
-        if dst_type is py_object_type:
-            entry = self.entry
-            if entry.is_cfunction:
-                var_entry = entry.as_variable
-                if var_entry:
-                    node = NameNode(self.pos, name = self.name)
-                    node.entry = var_entry
-                    node.analyse_rvalue_entry(env)
-                    return node
-        return AtomicExprNode.coerce_to(self, dst_type, env)
-    
-    def analyse_as_module(self, env):
-        # Try to interpret this as a reference to a cimported module.
-        # Returns the module scope, or None.
-        entry = env.lookup(self.name)
-        if entry and entry.as_module:
-            return entry.as_module
-        return None
-    
-    def analyse_as_extension_type(self, env):
-        # Try to interpret this as a reference to an extension type.
-        # Returns the extension type, or None.
-        entry = env.lookup(self.name)
-        if entry and entry.is_type and entry.type.is_extension_type:
-            return entry.type
-        else:
-            return None
-    
-    def analyse_target_declaration(self, env):
-        self.entry = env.lookup_here(self.name)
-        if not self.entry:
-            self.entry = env.declare_var(self.name, py_object_type, self.pos)
-
-    def analyse_types(self, env):
-        self.lookup_entry(env)
-        self.analyse_rvalue_entry(env)
-    
-    def lookup_entry(self, env):
-        self.entry = env.lookup(self.name)
-        if not self.entry:
-            self.entry = env.declare_builtin(self.name, self.pos)
-        
-    def analyse_target_types(self, env):
-        self.analyse_entry(env)
-        self.finish_analysing_lvalue()
-    
-    def analyse_inplace_types(self, env):
-        self.analyse_rvalue_entry(env)
-        self.finish_analysing_lvalue()
-    
-    def finish_analysing_lvalue(self):
-        if self.entry.is_readonly:
-            error(self.pos, "Assignment to read-only name '%s'"
-                % self.name)
-        elif not self.is_lvalue():
-            error(self.pos, "Assignment to non-lvalue '%s'"
-                % self.name)
-            self.type = PyrexTypes.error_type
-        self.entry.used = 1
-    
-    def analyse_as_function(self, env):
-        self.lookup_entry(env)
-        if self.entry.is_type:
-            self.analyse_constructor_entry(env)
-        else:
-            self.analyse_rvalue_entry(env)
-    
-    def analyse_constructor_entry(self, env):
-        entry = self.entry
-        type = entry.type
-        if type.is_struct_or_union:
-            self.type = entry.type.cplus_constructor_type
-        elif type.is_pyobject:
-            self.analyse_rvalue_entry(env)
-        else:
-            error(self.pos, "Type '%s' not callable as a C++ constructor" % type)
-            self.type = error_type
-        
-    def analyse_rvalue_entry(self, env):
-        #print "NameNode.analyse_rvalue_entry:", self.name ###
-        #print "Entry:", self.entry.__dict__ ###
-        self.analyse_entry(env)
-        entry = self.entry
-        if entry.is_declared_generic:
-            self.result_ctype = py_object_type
-        if entry.is_pyglobal or entry.is_builtin:
-            self.is_temp = 1
-            self.gil_check(env)
-    
-    gil_message = "Accessing Python global or builtin"
-    
-    def analyse_entry(self, env):
-        #print "NameNode.analyse_entry:", self.name ###
-        self.check_identifier_kind()
-        entry = self.entry
-        type = entry.type
-        ctype = entry.ctype
-        self.type = type
-        if ctype:
-            self.result_ctype = ctype
-        if entry.is_pyglobal or entry.is_builtin:
-            assert type.is_pyobject, "Python global or builtin not a Python object"
-            #self.interned_cname = env.intern(self.entry.name)
-
-    def check_identifier_kind(self):
-        #  Check that this is an appropriate kind of name for use in an expression.
-        #  Also finds the variable entry associated with an extension type.
-        entry = self.entry
-        if entry.is_type and entry.type.is_extension_type:
-            self.type_entry = entry
-        if not (entry.is_const or entry.is_variable 
-            or entry.is_builtin or entry.is_cfunction):
-                if self.entry.as_variable:
-                    self.entry = self.entry.as_variable
-                else:
-                    error(self.pos, 
-                        "'%s' is not a constant, variable or function identifier" % self.name)
-    
-    def is_simple(self):
-        #  If it's not a C variable, it'll be in a temp.
-        return 1
-    
-    def calculate_target_results(self, env):
-        pass
-    
-    def check_const(self):
-        entry = self.entry
-        if not (entry.is_const or entry.is_cfunction):
-            self.not_const()
-    
-    def check_const_addr(self):
-        entry = self.entry
-        if not (entry.is_cglobal or entry.is_cfunction):
-            self.addr_not_const()
-
-    def is_lvalue(self):
-        entry = self.entry
-        return entry.is_variable and \
-            not entry.type.is_array and \
-            not entry.is_readonly
-    
-    def is_inplace_lvalue(self):
-        return self.is_lvalue()
-    
-    def is_ephemeral(self):
-        #  Name nodes are never ephemeral, even if the
-        #  result is in a temporary.
-        return 0
-    
-    def allocate_temp(self, env, result = None):
-        AtomicExprNode.allocate_temp(self, env, result)
-        entry = self.entry
-        if entry:
-            entry.used = 1
-        
-    def calculate_result_code(self):
-        entry = self.entry
-        if not entry:
-            return "<error>" # There was an error earlier
-        return entry.cname
-    
-    def generate_result_code(self, code):
-        assert hasattr(self, 'entry')
-        entry = self.entry
-        if entry is None:
-            return # There was an error earlier
-        if entry.utility_code:
-            code.use_utility_code(entry.utility_code)
-        if entry.is_pyglobal or entry.is_builtin:
-            if entry.is_builtin:
-                namespace = Naming.builtins_cname
-            else: # entry.is_pyglobal
-                namespace = entry.namespace_cname
-            result = self.result()
-            cname = code.intern(self.entry.name)
-            code.use_utility_code(get_name_interned_utility_code)
-            code.putln(
-                '%s = __Pyx_GetName(%s, %s); if (!%s) %s' % (
-                result,
-                namespace, 
-                cname,
-                result, 
-                code.error_goto(self.pos)))
-
-    def generate_setattr_code(self, value_code, code):
-        entry = self.entry
-        namespace = self.entry.namespace_cname
-        cname = code.intern(self.entry.name)
-        code.putln(
-            'if (PyObject_SetAttr(%s, %s, %s) < 0) %s' % (
-                namespace, 
-                cname,
-                value_code, 
-                code.error_goto(self.pos)))
-
-    def generate_assignment_code(self, rhs, code):
-        #print "NameNode.generate_assignment_code:", self.name ###
-        entry = self.entry
-        if entry is None:
-            return # There was an error earlier
-        if entry.is_pyglobal:
-            self.generate_setattr_code(rhs.py_result(), code)
-            if debug_disposal_code:
-                print "NameNode.generate_assignment_code:"
-                print "...generating disposal code for", rhs
-            rhs.generate_disposal_code(code)
-        else:
-            if self.type.is_pyobject:
-                rhs.make_owned_reference(code)
-                code.put_decref(self.py_result())
-            code.putln('%s = %s;' % (self.result(), rhs.result_as(self.ctype())))
-            if debug_disposal_code:
-                print "NameNode.generate_assignment_code:"
-                print "...generating post-assignment code for", rhs
-            rhs.generate_post_assignment_code(code)
-    
-    def generate_inplace_assignment_code(self, operator, rhs, code):
-        entry = self.entry
-        if entry is None:
-            return # There was an error earlier
-        if self.type.is_pyobject:
-            self.generate_result_code(code)
-            self.generate_inplace_operation_code(operator, rhs, code)
-            if entry.is_pyglobal:
-                self.generate_setattr_code(self.inplace_result, code)
-                self.generate_inplace_result_disposal_code(code)
-            else:
-                code.put_decref(self.py_result())
-                cast_inplace_result = typecast(self.ctype(), py_object_type, self.inplace_result)
-                code.putln('%s = %s;' % (self.result(), cast_inplace_result))
-        else:
-            code.putln("%s %s %s;" % (self.result(), operator, rhs.result()))
-            rhs.generate_disposal_code(code)
-    
-    def generate_deletion_code(self, code):
-        if self.entry is None:
-            return # There was an error earlier
-        if not self.entry.is_pyglobal:
-            error(self.pos, "Deletion of local or C global name not supported")
-            return
-        cname = code.intern(self.entry.name)
-        code.putln(
-            'if (PyObject_DelAttr(%s, %s) < 0) %s' % (
-                Naming.module_cname,
-                cname,
-                code.error_goto(self.pos)))
-    
-    def mark_vars_used(self):
-        if self.entry:
-            self.entry.used = 1
-
-
-class BackquoteNode(ExprNode):
-    #  `expr`
-    #
-    #  arg    ExprNode
-    
-    subexprs = ['arg']
-    
-    def analyse_types(self, env):
-        self.arg.analyse_types(env)
-        self.arg = self.arg.coerce_to_pyobject(env)
-        self.type = py_object_type
-        self.gil_check(env)
-        self.is_temp = 1
-    
-    gil_message = "Backquote expression"
-    
-    def generate_result_code(self, code):
-        result = self.result()
-        code.putln(
-            "%s = PyObject_Repr(%s); if (!%s) %s" % (
-                self.result(),
-                self.arg.py_result(),
-                self.result(),
-                code.error_goto(self.pos)))
-
-
-class ImportNode(ExprNode):
-    #  Used as part of import statement implementation.
-    #  Implements result = 
-    #    __import__(module_name, globals(), None, name_list)
-    #
-    #  module_name   StringNode         dotted name of module
-    #  name_list     ListNode or None   list of names to be imported
-    
-    subexprs = ['module_name', 'name_list']
-
-    def analyse_types(self, env):
-        self.module_name.analyse_types(env)
-        self.module_name = self.module_name.coerce_to_pyobject(env)
-        if self.name_list:
-            self.name_list.analyse_types(env)
-        self.type = py_object_type
-        self.gil_check(env)
-        self.is_temp = 1
-#		env.use_utility_code(import_utility_code)
-    
-    gil_message = "Python import"
-    
-    def generate_result_code(self, code):
-        if self.name_list:
-            name_list_code = self.name_list.py_result()
-        else:
-            name_list_code = "0"
-        code.use_utility_code(import_utility_code)
-        result = self.result()
-        code.putln(
-            "%s = __Pyx_Import(%s, %s); if (!%s) %s" % (
-                result,
-                self.module_name.py_result(),
-                name_list_code,
-                result,
-                code.error_goto(self.pos)))
-
-
-class IteratorNode(ExprNode):
-    #  Used as part of for statement implementation.
-    #  Implements result = iter(sequence)
-    #
-    #  sequence   ExprNode
-    
-    subexprs = ['sequence']
-    
-    def analyse_types(self, env):
-        self.sequence.analyse_types(env)
-        self.sequence = self.sequence.coerce_to_pyobject(env)
-        self.type = py_object_type
-        self.gil_check(env)
-        self.is_temp = 1
-    
-    gil_message = "Iterating over Python object"
-    
-    def generate_result_code(self, code):
-        result = self.result()
-        code.putln(
-            "%s = PyObject_GetIter(%s); if (!%s) %s" % (
-                result,
-                self.sequence.py_result(),
-                result,
-                code.error_goto(self.pos)))
-
-
-class NextNode(AtomicExprNode):
-    #  Used as part of for statement implementation.
-    #  Implements result = iterator.next()
-    #  Created during analyse_types phase.
-    #  The iterator is not owned by this node.
-    #
-    #  iterator   ExprNode
-    
-    def __init__(self, iterator, env):
-        self.pos = iterator.pos
-        self.iterator = iterator
-        self.type = py_object_type
-        self.is_temp = 1
-    
-    def generate_result_code(self, code):
-        result = self.result()
-        code.putln(
-            "%s = PyIter_Next(%s);" % (
-                result,
-                self.iterator.py_result()))
-        code.putln(
-            "if (!%s) {" %
-                result)
-        code.putln(
-                "if (PyErr_Occurred()) %s" %
-                    code.error_goto(self.pos))
-        code.putln(
-                "break;")
-        code.putln(
-            "}")
-
-
-class ExcValueNode(AtomicExprNode):
-    #  Node created during analyse_types phase
-    #  of an ExceptClauseNode to fetch the current
-    #  exception or traceback value.
-    
-    def __init__(self, pos, env, var):
-        ExprNode.__init__(self, pos)
-        self.type = py_object_type
-        self.var = var
-    
-    def calculate_result_code(self):
-        return self.var
-
-    def generate_result_code(self, code):
-        pass
-
-
-class TempNode(AtomicExprNode):
-    #  Node created during analyse_types phase
-    #  of some nodes to hold a temporary value.
-    
-    def __init__(self, pos, type, env):
-        ExprNode.__init__(self, pos)
-        self.type = type
-        if type.is_pyobject:
-            self.result_ctype = py_object_type
-        self.is_temp = 1
-    
-    def generate_result_code(self, code):
-        pass
-
-
-class PyTempNode(TempNode):
-    #  TempNode holding a Python value.
-    
-    def __init__(self, pos, env):
-        TempNode.__init__(self, pos, PyrexTypes.py_object_type, env)
-
-
-#-------------------------------------------------------------------
-#
-#  Trailer nodes
-#
-#-------------------------------------------------------------------
-
-class IndexNode(ExprNode):
-    #  Sequence indexing.
-    #
-    #  base     ExprNode
-    #  index    ExprNode
-    
-    subexprs = ['base', 'index']
-    
-    def compile_time_value(self, denv):
-        base = self.base.compile_time_value(denv)
-        index = self.index.compile_time_value(denv)
-        try:
-            return base[index]
-        except Exception, e:
-            self.compile_time_value_error(e)
-    
-    def is_ephemeral(self):
-        return self.base.is_ephemeral()
-    
-    def analyse_target_declaration(self, env):
-        pass
-    
-    def analyse_types(self, env):
-        self.analyse_base_and_index_types(env, getting = 1)
-    
-    def analyse_target_types(self, env):
-        self.analyse_base_and_index_types(env, setting = 1)
-    
-    def analyse_inplace_types(self, env):
-        self.analyse_base_and_index_types(env, getting = 1, setting = 1)
-    
-    def analyse_base_and_index_types(self, env, getting = 0, setting = 0):
-        self.base.analyse_types(env)
-        self.index.analyse_types(env)
-        btype = self.base.type
-        if btype.is_pyobject:
-            itype = self.index.type
-            if not (btype.is_sequence and itype.is_int and itype.signed):
-                self.index = self.index.coerce_to_pyobject(env)
-            self.type = py_object_type
-            self.gil_check(env)
-            self.is_temp = 1
-        else:
-            if self.base.type.is_ptr or self.base.type.is_array:
-                self.type = self.base.type.base_type
-            else:
-                error(self.pos,
-                    "Attempting to index non-array type '%s'" %
-                        self.base.type)
-                self.type = PyrexTypes.error_type
-            if self.index.type.is_pyobject:
-                self.index = self.index.coerce_to(
-                    PyrexTypes.c_py_ssize_t_type, env)
-            if not self.index.type.is_int:
-                error(self.pos,
-                    "Invalid index type '%s'" %
-                        self.index.type)
-    
-    gil_message = "Indexing Python object"
-    
-    def check_const_addr(self):
-        self.base.check_const_addr()
-        self.index.check_const()
-    
-    def is_lvalue(self):
-        return 1
-    
-    def is_inplace_lvalue(self):
-        return 1
-    
-    def calculate_result_code(self):
-        return "(%s[%s])" % (
-            self.base.result(), self.index.result())
-    
-    def generate_result_code(self, code):
-        if self.type.is_pyobject:
-            itype = self.index.type
-            if itype.is_int and itype.signed:
-                code.use_utility_code(getitem_int_utility_code)
-                function = "__Pyx_GetItemInt"
-                index_code = self.index.result()
-            else:
-                function = "PyObject_GetItem"
-                index_code = self.index.py_result()
-            result = self.result()
-            code.putln(
-                "%s = %s(%s, %s); if (!%s) %s" % (
-                    result,
-                    function,
-                    self.base.py_result(),
-                    index_code,
-                    result,
-                    code.error_goto(self.pos)))
-    
-    def generate_setitem_code(self, value_code, code):
-        itype = self.index.type
-        if itype.is_int and itype.signed:
-            code.use_utility_code(setitem_int_utility_code)
-            function = "__Pyx_SetItemInt"
-            index_code = self.index.result()
-        else:
-            function = "PyObject_SetItem"
-            index_code = self.index.py_result()
-        code.putln(
-            "if (%s(%s, %s, %s) < 0) %s" % (
-                function,
-                self.base.py_result(),
-                index_code,
-                value_code,
-                code.error_goto(self.pos)))
-    
-    def generate_assignment_code(self, rhs, code):
-        self.generate_subexpr_evaluation_code(code)
-        if self.type.is_pyobject:
-            self.generate_setitem_code(rhs.py_result(), code)
-        else:
-            code.putln(
-                "%s = %s;" % (
-                    self.result(), rhs.result()))
-        self.generate_subexpr_disposal_code(code)
-        rhs.generate_disposal_code(code)
-    
-    def generate_inplace_assignment_code(self, operator, rhs, code):
-        self.generate_subexpr_evaluation_code(code)
-        if self.type.is_pyobject:
-            self.generate_result_code(code)
-            self.generate_inplace_operation_code(operator, rhs, code)
-            self.generate_setitem_code(self.inplace_result, code)
-            self.generate_inplace_result_disposal_code(code)
-        else:
-            code.putln("%s %s %s;" % (self.result(), operator, rhs.result()))
-            rhs.generate_disposal_code(code)
-        self.generate_subexpr_disposal_code(code)
-    
-    def generate_deletion_code(self, code):
-        self.generate_subexpr_evaluation_code(code)
-        if self.base.type.is_sequence and self.index.type.is_int:
-            function = "PySequence_DelItem"
-            index_code = self.index.result()
-        else:
-            function = "PyObject_DelItem"
-            index_code = self.index.py_result()
-        code.putln(
-            "if (%s(%s, %s) < 0) %s" % (
-                function,
-                self.base.py_result(),
-                index_code,
-                code.error_goto(self.pos)))
-        #else:
-        #	error(self.pos, "Cannot delete non-Python variable")
-        self.generate_subexpr_disposal_code(code)
-
-
-class SliceIndexNode(ExprNode):
-    #  2-element slice indexing
-    #
-    #  base      ExprNode
-    #  start     ExprNode or None
-    #  stop      ExprNode or None
-    
-    subexprs = ['base', 'start', 'stop']
-    
-    def is_inplace_lvalue(self):
-        return 1
-    
-    def compile_time_value(self, denv):
-        base = self.base.compile_time_value(denv)
-        start = self.start.compile_time_value(denv)
-        stop = self.stop.compile_time_value(denv)
-        try:
-            return base[start:stop]
-        except Exception, e:
-            self.compile_time_value_error(e)
-    
-    def analyse_target_declaration(self, env):
-        pass
-
-    def analyse_types(self, env):
-        self.base.analyse_types(env)
-        if self.start:
-            self.start.analyse_types(env)
-        if self.stop:
-            self.stop.analyse_types(env)
-        self.base = self.base.coerce_to_pyobject(env)
-        c_int = PyrexTypes.c_py_ssize_t_type
-        if self.start:
-            self.start = self.start.coerce_to(c_int, env)
-        if self.stop:
-            self.stop = self.stop.coerce_to(c_int, env)
-        self.type = py_object_type
-        self.gil_check(env)
-        self.is_temp = 1
-    
-    gil_message = "Slicing Python object"
-    
-    def generate_result_code(self, code):
-        result = self.result()
-        code.putln(
-            "%s = PySequence_GetSlice(%s, %s, %s); if (!%s) %s" % (
-                result,
-                self.base.py_result(),
-                self.start_code(),
-                self.stop_code(),
-                result,
-                code.error_goto(self.pos)))
-    
-    def generate_setslice_code(self, value_code, code):
-        code.putln(
-            "if (PySequence_SetSlice(%s, %s, %s, %s) < 0) %s" % (
-                self.base.py_result(),
-                self.start_code(),
-                self.stop_code(),
-                value_code,
-                code.error_goto(self.pos)))
-    
-    def generate_assignment_code(self, rhs, code):
-        self.generate_subexpr_evaluation_code(code)
-        self.generate_setslice_code(rhs.result(), code)
-        self.generate_subexpr_disposal_code(code)
-        rhs.generate_disposal_code(code)
-    
-    def generate_inplace_assignment_code(self, operator, rhs, code):
-        self.generate_subexpr_evaluation_code(code)
-        self.generate_result_code(code)
-        self.generate_inplace_operation_code(operator, rhs, code)
-        self.generate_setslice_code(self.inplace_result, code)
-        self.generate_inplace_result_disposal_code(code)
-        self.generate_subexpr_disposal_code(code)
-
-    def generate_deletion_code(self, code):
-        self.generate_subexpr_evaluation_code(code)
-        code.putln(
-            "if (PySequence_DelSlice(%s, %s, %s) < 0) %s" % (
-                self.base.py_result(),
-                self.start_code(),
-                self.stop_code(),
-                code.error_goto(self.pos)))
-        self.generate_subexpr_disposal_code(code)
-    
-    def start_code(self):
-        if self.start:
-            return self.start.result()
-        else:
-            return "0"
-    
-    def stop_code(self):
-        if self.stop:
-            return self.stop.result()
-        else:
-            return "PY_SSIZE_T_MAX"
-    
-#	def calculate_result_code(self):
-#		# self.result_code is not used, but this method must exist
-#		return "<unused>"
-    
-
-class SliceNode(ExprNode):
-    #  start:stop:step in subscript list
-    #
-    #  start     ExprNode
-    #  stop      ExprNode
-    #  step      ExprNode
-    
-    def compile_time_value(self, denv):
-        start = self.start.compile_time_value(denv)
-        stop = self.stop.compile_time_value(denv)
-        step = step.step.compile_time_value(denv)
-        try:
-            return slice(start, stop, step)
-        except Exception, e:
-            self.compile_time_value_error(e)
-
-    subexprs = ['start', 'stop', 'step']
-    
-    def analyse_types(self, env):
-        self.start.analyse_types(env)
-        self.stop.analyse_types(env)
-        self.step.analyse_types(env)
-        self.start = self.start.coerce_to_pyobject(env)
-        self.stop = self.stop.coerce_to_pyobject(env)
-        self.step = self.step.coerce_to_pyobject(env)
-        self.type = py_object_type
-        self.gil_check(env)
-        self.is_temp = 1
-    
-    gil_message = "Constructing Python slice object"
-    
-    def generate_result_code(self, code):
-        result = self.result()
-        code.putln(
-            "%s = PySlice_New(%s, %s, %s); if (!%s) %s" % (
-                result,
-                self.start.py_result(), 
-                self.stop.py_result(), 
-                self.step.py_result(),
-                result,
-                code.error_goto(self.pos)))
-
-
-class CallNode(ExprNode):
-
-    def gil_check(self, env):
-        # Make sure we're not in a nogil environment
-        if env.nogil:
-            error(self.pos, "Calling gil-requiring function without gil")
-
-
-class SimpleCallNode(CallNode):
-    #  Function call without keyword, * or ** args.
-    #
-    #  function       ExprNode
-    #  args           [ExprNode]
-    #  arg_tuple      ExprNode or None     used internally
-    #  self           ExprNode or None     used internally
-    #  coerced_self   ExprNode or None     used internally
-    #  function_type  PyrexType            used internally
-    
-    subexprs = ['self', 'coerced_self', 'function', 'args', 'arg_tuple']
-    
-    self = None
-    coerced_self = None
-    arg_tuple = None
-    is_new = False
-    
-    cplus_argless_constr_type = CFuncType(None, [])
-    
-    def compile_time_value(self, denv):
-        function = self.function.compile_time_value(denv)
-        args = [arg.compile_time_value(denv) for arg in self.args]
-        try:
-            return function(*args)
-        except Exception, e:
-            self.compile_time_value_error(e)
-
-    def analyse_types(self, env):
-        #print "SimpleCallNode.analyse_types:", self.pos ###
-        function = self.function
-        function.is_called = 1
-        function.analyse_as_function(env)
-        if function.is_name or function.is_attribute:
-            #print "SimpleCallNode.analyse_types:", self.pos, "is name or attribute" ###
-            func_entry = function.entry
-            if func_entry:
-                if func_entry.is_cmethod or func_entry.is_builtin_method:
-                    # Take ownership of the object from which the attribute
-                    # was obtained, because we need to pass it as 'self'.
-                    #print "SimpleCallNode: Snarfing self argument" ###
-                    self.self = function.obj
-                    function.obj = CloneNode(self.self)
-                elif self.is_new:
-                    if not (func_entry.is_type and func_entry.type.is_struct_or_union
-                            and func_entry.type.scope.is_cplus):
-                        error(self.pos, "'new' operator can only be used on a C++ struct type")
-                        self.type = error_type
-                        return
-        else:
-            #print "SimpleCallNode.analyse_types:", self.pos, "not name or attribute" ###
-            if self.is_new:
-                error(self.pos, "Invalid use of 'new' operator")
-                self.type = error_type
-                return
-        func_type = self.function.type
-        if func_type.is_ptr:
-            func_type = func_type.base_type
-        self.function_type = func_type
-        if func_type.is_pyobject:
-            #print "SimpleCallNode: Python call" ###
-            if self.args:
-                self.arg_tuple = TupleNode(self.pos, args = self.args)
-                self.arg_tuple.analyse_types(env)
-            else:
-                self.arg_tuple = None
-            self.args = None
-            if function.is_name and function.type_entry:
-                # We are calling an extension type constructor
-                self.type = function.type_entry.type
-                self.result_ctype = py_object_type
-            else:
-                self.type = py_object_type
-            self.gil_check(env)
-            self.is_temp = 1
-        else:
-            #print "SimpleCallNode: C call" ###
-            for arg in self.args:
-                arg.analyse_types(env)
-            if func_type.is_cfunction:
-                self.type = func_type.return_type
-                if self.is_new:
-                    self.type = CPtrType(self.type)
-                if func_type.is_overloaded:
-                    func_type = self.resolve_overloading()
-                    if not func_type:
-                        self.type = error_type
-                        return
-                if self.self and func_type.args:
-                    #print "SimpleCallNode: Inserting self into argument list" ###
-                    # Coerce 'self' to the type expected by the method.
-                    expected_type = func_type.args[0].type
-                    self.coerced_self = CloneNode(self.self).coerce_to(
-                        expected_type, env)
-                    # Insert coerced 'self' argument into argument list.
-                    self.args.insert(0, self.coerced_self)
-            self.analyse_c_function_call(env)
-    
-    def resolve_overloading(self):
-        func_type = self.function_type
-        arg_types = [arg.type for arg in self.args]
-        signatures = func_type.signatures or [self.cplus_argless_constr_type]
-        for signature in signatures:
-            if signature.callable_with(arg_types):
-                signature.return_type = func_type.return_type
-                self.function_type = signature
-                return signature
-        def display_types(types):
-            return ", ".join([str(type) for type in types])
-        error(self.pos, "No matching signature found for argument types (%s)"
-            % display_types(arg_types))
-        if signatures:
-            error(self.pos, "Candidates are:")
-            for signature in signatures:
-                error(signature.pos, "(%s)" % display_types(signature.args))
-    
-    def analyse_c_function_call(self, env):
-        func_type = self.function_type
-        # Check function type
-        if not func_type.is_cfunction:
-            if not func_type.is_error:
-                error(self.pos, "Calling non-function type '%s'" %
-                    func_type)
-            self.type = PyrexTypes.error_type
-            return
-        # Check no. of args
-        expected_nargs = len(func_type.args)
-        actual_nargs = len(self.args)
-        if actual_nargs < expected_nargs \
-            or (not func_type.has_varargs and actual_nargs > expected_nargs):
-                expected_str = str(expected_nargs)
-                if func_type.has_varargs:
-                    expected_str = "at least " + expected_str
-                error(self.pos, 
-                    "Call with wrong number of arguments (expected %s, got %s)"
-                        % (expected_str, actual_nargs))
-                self.args = None
-                self.type = PyrexTypes.error_type
-                return
-        # Coerce arguments
-        for i in range(expected_nargs):
-            formal_type = func_type.args[i].type
-            self.args[i] = self.args[i].coerce_to(formal_type, env)
-        for i in range(expected_nargs, actual_nargs):
-            if self.args[i].type.is_pyobject:
-                error(self.args[i].pos, 
-                    "Python object cannot be passed as a varargs parameter")
-        # Calc result code fragment
-        #print "SimpleCallNode.analyse_c_function_call: self.type =", self.type ###
-        if self.type.is_pyobject \
-            or func_type.exception_value is not None \
-            or func_type.exception_check:
-                self.is_temp = 1
-                if self.type.is_pyobject:
-                    self.result_ctype = py_object_type
-        # Check gil
-        if not func_type.nogil:
-            self.gil_check(env)
-        if func_type.exception_check and env.nogil:
-            self.gil_error("Calling 'except ?' or 'except *' function")
-    
-    def calculate_result_code(self):
-        return self.c_call_code()
-    
-    def c_call_code(self):
-        if self.type.is_error or self.args is None or not self.function_type.is_cfunction:
-            return "<error>"
-        func_type = self.function_type
-        formal_args = func_type.args
-        arg_list_code = []
-        for (formal_arg, actual_arg) in zip(formal_args, self.args):
-            arg_code = actual_arg.result_as(formal_arg.type)
-            arg_list_code.append(arg_code)
-        for actual_arg in self.args[len(formal_args):]:
-            arg_list_code.append(actual_arg.result())
-        result = "%s(%s)" % (self.function.result(),
-            join(arg_list_code, ","))
-        if self.is_new:
-            result = "new " + result
-        return result
-    
-    def generate_result_code(self, code):
-        if self.type.is_error:
-            return
-        func_type = self.function_type
-        result = self.result()
-        if func_type.is_pyobject:
-            if self.arg_tuple:
-                arg_code = self.arg_tuple.py_result()
-            else:
-                arg_code = "0"
-            code.putln(
-                "%s = PyObject_CallObject(%s, %s); if (!%s) %s" % (
-                    result,
-                    self.function.py_result(),
-                    arg_code,
-                    result,
-                    code.error_goto(self.pos)))
-        elif func_type.is_cfunction:
-            exc_checks = []
-            if self.type.is_pyobject:
-                exc_checks.append("!%s" % result)
-            else:
-                exc_val = func_type.exception_value
-                exc_check = func_type.exception_check
-                if exc_val is not None:
-                    exc_checks.append("%s == %s" % (self.result(), exc_val))
-                if exc_check:
-                    exc_checks.append("PyErr_Occurred()")
-            if self.is_temp or exc_checks:
-                rhs = self.c_call_code()
-                result = self.result()
-                if result:
-                    lhs = "%s = " % result
-                    if self.is_temp and self.type.is_pyobject:
-                        #return_type = self.type # func_type.return_type
-                        #print "SimpleCallNode.generate_result_code: casting", rhs, \
-                        #	"from", return_type, "to pyobject" ###
-                        rhs = typecast(py_object_type, self.type, rhs)
-                else:
-                    lhs = ""
-                code.putln(
-                    "%s%s; if (%s) %s" % (
-                        lhs,
-                        rhs,
-                        " && ".join(exc_checks),
-                        code.error_goto(self.pos)))
-    
-
-class GeneralCallNode(CallNode):
-    #  General Python function call, including keyword,
-    #  * and ** arguments.
-    #
-    #  function         ExprNode
-    #  positional_args  ExprNode          Tuple of positional arguments
-    #  keyword_args     ExprNode or None  Dict of keyword arguments
-    #  starstar_arg     ExprNode or None  Dict of extra keyword args
-    
-    subexprs = ['function', 'positional_args', 'keyword_args', 'starstar_arg']
-
-    def compile_time_value(self, denv):
-        function = self.function.compile_time_value(denv)
-        positional_args = self.positional_args.compile_time_value(denv)
-        keyword_args = self.keyword_args.compile_time_value(denv)
-        starstar_arg = self.starstar_arg.compile_time_value(denv)
-        try:
-            keyword_args.update(starstar_arg)
-            return function(*positional_args, **keyword_args)
-        except Exception, e:
-            self.compile_time_value_error(e)
-
-    def analyse_types(self, env):
-        function = self.function
-        function.analyse_types(env)
-        self.positional_args.analyse_types(env)
-        if self.keyword_args:
-            self.keyword_args.analyse_types(env)
-        if self.starstar_arg:
-            self.starstar_arg.analyse_types(env)
-        self.function = self.function.coerce_to_pyobject(env)
-        self.positional_args = \
-            self.positional_args.coerce_to_pyobject(env)
-        if self.starstar_arg:
-            self.starstar_arg = \
-                self.starstar_arg.coerce_to_pyobject(env)
-        if function.is_name and function.type_entry:
-            # We are calling an extension type constructor
-            self.type = function.type_entry.type
-            self.result_ctype = py_object_type
-        else:
-            self.type = py_object_type
-        self.gil_check(env)
-        self.is_temp = 1
-        
-    def generate_result_code(self, code):
-        if self.keyword_args and self.starstar_arg:
-            code.putln(
-                "if (PyDict_Update(%s, %s) < 0) %s" % (
-                    self.keyword_args.py_result(), 
-                    self.starstar_arg.py_result(),
-                    code.error_goto(self.pos)))
-            keyword_code = self.keyword_args.py_result()
-        elif self.keyword_args:
-            keyword_code = self.keyword_args.py_result()
-        elif self.starstar_arg:
-            keyword_code = self.starstar_arg.py_result()
-        else:
-            keyword_code = None
-        if not keyword_code:
-            call_code = "PyObject_CallObject(%s, %s)" % (
-                self.function.py_result(),
-                self.positional_args.py_result())
-        else:
-            call_code = "PyEval_CallObjectWithKeywords(%s, %s, %s)" % (
-                self.function.py_result(),
-                self.positional_args.py_result(),
-                keyword_code)
-        result = self.result()
-        code.putln(
-            "%s = %s; if (!%s) %s" % (
-                result,
-                call_code,
-                result,
-                code.error_goto(self.pos)))
-
-
-class AsTupleNode(ExprNode):
-    #  Convert argument to tuple. Used for normalising
-    #  the * argument of a function call.
-    #
-    #  arg    ExprNode
-    
-    subexprs = ['arg']
-    
-    def compile_time_value(self, denv):
-        arg = self.arg.compile_time_value(denv)
-        try:
-            return tuple(arg)
-        except Exception, e:
-            self.compile_time_value_error(e)
-
-    def analyse_types(self, env):
-        self.arg.analyse_types(env)
-        self.arg = self.arg.coerce_to_pyobject(env)
-        self.type = py_object_type
-        self.gil_check(env)
-        self.is_temp = 1
-    
-    gil_message = "Constructing Python tuple"
-    
-    def generate_result_code(self, code):
-        result = self.result()
-        code.putln(
-            "%s = PySequence_Tuple(%s); if (!%s) %s" % (
-                result,
-                self.arg.py_result(),
-                result,
-                code.error_goto(self.pos)))
-    
-
-class AttributeNode(ExprNode):
-    #  obj.attribute
-    #
-    #  obj          ExprNode
-    #  attribute    string
-    #
-    #  Used internally:
-    #
-    #  is_py_attr           boolean   Is a Python getattr operation
-    #  member               string    C name of struct member
-    #  is_called            boolean   Function call is being done on result
-    #  entry                Entry     Symbol table entry of attribute
-    #  interned_attr_cname	string    C name of interned attribute name
-    
-    is_attribute = 1
-    subexprs = ['obj']
-    
-    type = PyrexTypes.error_type
-    result_code = "<error>"
-    entry = None
-    is_called = 0
-
-    def compile_time_value(self, denv):
-        attr = self.attribute
-        if attr.startswith("__") and attr.endswith("__"):
-            self.error("Invalid attribute name '%s' in compile-time expression"
-                % attr)
-            return None
-        obj = self.obj.compile_time_value(denv)
-        try:
-            return getattr(obj, attr)
-        except Exception, e:
-            self.compile_time_value_error(e)
-
-    def analyse_target_declaration(self, env):
-        pass
-    
-    def analyse_target_types(self, env):
-        self.analyse_types(env, target = 1)
-    
-    def analyse_as_function(self, env):
-        module_scope = self.obj.analyse_as_module(env)
-        if module_scope:
-            entry = module_scope.lookup_here(self.attribute)
-            if entry and entry.is_type:
-                self.mutate_into_name_node(entry)
-                self.analyse_constructor_entry(env)
-                return
-        self.analyse_types(env)
-            
-    def analyse_types(self, env, target = 0):
-        if self.analyse_as_cimported_attribute(env, target):
-            return
-        if not target and self.analyse_as_unbound_cmethod(env):
-            return
-        self.analyse_as_ordinary_attribute(env, target)
-    
-    def analyse_as_cimported_attribute(self, env, target = 0, allow_type = 0):
-        # Try to interpret this as a reference to an imported
-        # C const, type, var or function. If successful, mutates
-        # this node into a NameNode and returns 1, otherwise
-        # returns 0.
-        module_scope = self.obj.analyse_as_module(env)
-        if module_scope:
-            entry = module_scope.lookup_here(self.attribute)
-            if entry and (
-                entry.is_cglobal or entry.is_cfunction
-                or entry.is_type or entry.is_const):
-                    self.mutate_into_name_node(entry)
-                    if entry.is_type and allow_type:
-                        pass
-                    elif target:
-                        self.analyse_target_types(env)
-                    else:
-                        self.analyse_rvalue_entry(env)
-                    return 1
-        return 0
-    
-    def analyse_as_unbound_cmethod(self, env):
-        # Try to interpret this as a reference to an unbound
-        # C method of an extension type. If successful, mutates
-        # this node into a NameNode and returns 1, otherwise
-        # returns 0.
-        type = self.obj.analyse_as_extension_type(env)
-        if type:
-            entry = type.scope.lookup_here(self.attribute)
-            if entry and entry.is_cmethod:
-                # Create a temporary entry describing the C method
-                # as an ordinary function.
-                ubcm_entry = Symtab.Entry(entry.name,
-                    "%s->%s" % (type.vtabptr_cname, entry.cname),
-                    entry.type)
-                ubcm_entry.is_cfunction = 1
-                ubcm_entry.func_cname = entry.func_cname
-                self.mutate_into_name_node(ubcm_entry)
-                self.analyse_rvalue_entry(env)
-                return 1
-        return 0
-    
-    def analyse_as_extension_type(self, env):
-        # Try to interpret this as a reference to an extension type
-        # in a cimported module. Returns the extension type, or None.
-        module_scope = self.obj.analyse_as_module(env)
-        if module_scope:
-            entry = module_scope.lookup_here(self.attribute)
-            if entry and entry.is_type and entry.type.is_extension_type:
-                return entry.type
-        return None
-    
-    def analyse_as_module(self, env):
-        # Try to interpret this as a reference to a cimported module
-        # in another cimported module. Returns the module scope, or None.
-        module_scope = self.obj.analyse_as_module(env)
-        if module_scope:
-            entry = module_scope.lookup_here(self.attribute)
-            if entry and entry.as_module:
-                return entry.as_module
-        return None
-                
-    def mutate_into_name_node(self, entry):
-        # Turn this node into a NameNode with the given entry.
-        self.__class__ = NameNode
-        self.name = self.attribute
-        self.entry = entry
-        del self.obj
-        del self.attribute
-    
-    def analyse_as_ordinary_attribute(self, env, target):
-        self.obj.analyse_types(env)
-        self.analyse_attribute(env)
-        if self.entry and self.entry.is_cmethod and not self.is_called:
-            error(self.pos, "C method can only be called")
-        if self.is_py_attr:
-            if not target:
-                self.is_temp = 1
-                self.result_ctype = py_object_type
-    
-    def analyse_attribute(self, env):
-        # Look up attribute and set self.type and self.member.
-        self.is_py_attr = 0
-        self.member = self.attribute
-        if self.obj.type.is_string:
-            self.obj = self.obj.coerce_to_pyobject(env)
-        obj_type = self.obj.type
-        if obj_type.is_ptr:
-            obj_type = obj_type.base_type
-            self.op = "->"
-        elif obj_type.is_extension_type:
-            self.op = "->"
-        else:
-            self.op = "."
-        if obj_type.has_attributes:
-            entry = None
-            if obj_type.attributes_known():
-                entry = obj_type.scope.lookup_here(self.attribute)
-            else:
-                error(self.pos, 
-                    "Cannot select attribute of incomplete type '%s'" 
-                    % obj_type)
-                obj_type = PyrexTypes.error_type
-            self.entry = entry
-            if entry:
-                if obj_type.is_extension_type and entry.name == "__weakref__":
-                    error(self.pos, "Illegal use of special attribute __weakref__")
-                if entry.is_variable or entry.is_cmethod:
-                    self.type = entry.type
-                    self.member = entry.cname
-                    return
-                if entry.is_builtin_method and self.is_called:
-                    # Mutate into NameNode referring to C function
-                    #print "AttributeNode: Mutating builtin method into NameNode" ###
-                    self.type = entry.type
-                    self.__class__ = NameNode
-                    return
-                else:
-                    # If it's not a variable or C method, it must be a Python
-                    # method of an extension type, so we treat it like a Python
-                    # attribute.
-                    pass
-        # If we get here, the base object is not a struct/union/extension 
-        # type, or it is an extension type and the attribute is either not
-        # declared or is declared as a Python method. Treat it as a Python
-        # attribute reference.
-        if obj_type.is_pyobject:
-            self.type = py_object_type
-            self.is_py_attr = 1
-            #self.interned_attr_cname = env.intern(self.attribute)
-            self.gil_check(env)
-        else:
-            if not obj_type.is_error:
-                error(self.pos, 
-                    "Object of type '%s' has no attribute '%s'" %
-                    (obj_type, self.attribute))
-    
-    gil_message = "Accessing Python attribute"
-        
-    def is_simple(self):
-        if self.obj:
-            return self.result_in_temp() or self.obj.is_simple()
-        else:
-            return NameNode.is_simple(self)
-
-    def is_lvalue(self):
-        if self.obj:
-            return 1
-        else:
-            return NameNode.is_lvalue(self)
-    
-    def is_inplace_lvalue(self):
-        return self.is_lvalue()
-    
-    def is_ephemeral(self):
-        if self.obj:
-            return self.obj.is_ephemeral()
-        else:
-            return NameNode.is_ephemeral(self)
-    
-    def calculate_result_code(self):
-        obj = self.obj
-        obj_code = obj.result_as(obj.type)
-        if self.entry and self.entry.is_cmethod:
-            return "((struct %s *)%s%s%s)->%s" % (
-                obj.type.vtabstruct_cname, obj_code, self.op, 
-                obj.type.vtabslot_cname, self.member)
-        else:
-            return "%s%s%s" % (obj_code, self.op, self.member)
-    
-    def generate_result_code(self, code):
-        if self.is_py_attr:
-            result = self.result()
-            cname = code.intern(self.attribute)
-            code.putln(
-                '%s = PyObject_GetAttr(%s, %s); if (!%s) %s' % (
-                    result,
-                    self.obj.py_result(),
-                    cname,
-                    result,
-                    code.error_goto(self.pos)))
-    
-    def generate_setattr_code(self, value_code, code):
-        cname = code.intern(self.attribute)
-        code.putln(
-            'if (PyObject_SetAttr(%s, %s, %s) < 0) %s' % (
-                self.obj.py_result(),
-                cname,
-                value_code,
-                code.error_goto(self.pos)))
-    
-    def generate_assignment_code(self, rhs, code):
-        self.obj.generate_evaluation_code(code)
-        if self.is_py_attr:
-            self.generate_setattr_code(rhs.py_result(), code)
-            rhs.generate_disposal_code(code)
-        else:
-            select_code = self.result()
-            if self.type.is_pyobject:
-                rhs.make_owned_reference(code)
-                code.put_decref(select_code, self.ctype())
-            code.putln(
-                "%s = %s;" % (
-                    select_code,
-                    rhs.result_as(self.ctype())))
-            rhs.generate_post_assignment_code(code)
-        self.obj.generate_disposal_code(code)
-    
-    def generate_inplace_assignment_code(self, operator, rhs, code):
-        self.obj.generate_evaluation_code(code)
-        select_code = self.result()
-        if self.type.is_pyobject:
-            self.generate_result_code(code)
-            self.generate_inplace_operation_code(operator, rhs, code)
-            if self.is_py_attr:
-                self.generate_setattr_code(self.inplace_result, code)
-                self.generate_inplace_result_disposal_code(code)
-            else:
-                code.put_decref(select_code, self.ctype())
-                cast_inplace_result = typecast(self.ctype(), py_object_type, self.inplace_result)
-                code.putln("%s = %s;" % (select_code, cast_inplace_result))
-        else:
-            code.putln("%s %s %s;" % (select_code, operator, rhs.result()))
-            rhs.generate_disposal_code(code)
-        self.obj.generate_disposal_code(code)
-    
-    def generate_deletion_code(self, code):
-        self.obj.generate_evaluation_code(code)
-        if self.is_py_attr:
-            cname = code.intern(self.attribute)
-            code.putln(
-                'if (PyObject_DelAttr(%s, %s) < 0) %s' % (
-                    self.obj.py_result(),
-                    cname,
-                    code.error_goto(self.pos)))
-        else:
-            error(self.pos, "Cannot delete C attribute of extension type")
-        self.obj.generate_disposal_code(code)
-
-#-------------------------------------------------------------------
-#
-#  Constructor nodes
-#
-#-------------------------------------------------------------------
-
-class SequenceNode(ExprNode):
-    #  Base class for list and tuple constructor nodes.
-    #  Contains common code for performing sequence unpacking.
-    #
-    #  args                    [ExprNode]
-    #  iterator                ExprNode
-    #  unpacked_items          [ExprNode] or None
-    #  coerced_unpacked_items  [ExprNode] or None
-    
-    subexprs = ['args']
-    
-    is_sequence_constructor = 1
-    unpacked_items = None
-    
-    def compile_time_value_list(self, denv):
-        return [arg.compile_time_value(denv) for arg in self.args]
-
-    def analyse_target_declaration(self, env):
-        for arg in self.args:
-            arg.analyse_target_declaration(env)
-
-    def analyse_types(self, env):
-        for i in range(len(self.args)):
-            arg = self.args[i]
-            arg.analyse_types(env)
-            self.args[i] = arg.coerce_to_pyobject(env)
-        self.type = py_object_type
-        self.gil_check(env)
-        self.is_temp = 1
-    
-    def analyse_target_types(self, env):
-        self.iterator = PyTempNode(self.pos, env)
-        self.unpacked_items = []
-        self.coerced_unpacked_items = []
-        for arg in self.args:
-            arg.analyse_target_types(env)
-            unpacked_item = PyTempNode(self.pos, env)
-            coerced_unpacked_item = unpacked_item.coerce_to(arg.type, env)
-            self.unpacked_items.append(unpacked_item)
-            self.coerced_unpacked_items.append(coerced_unpacked_item)
-        self.type = py_object_type
-#		env.use_utility_code(unpacking_utility_code)
-    
-    def allocate_target_temps(self, env, rhs):
-        self.iterator.allocate_temps(env)
-        if rhs:
-            rhs.release_temp(env)
-        for arg, node in zip(self.args, self.coerced_unpacked_items):
-            node.allocate_temps(env)
-            arg.allocate_target_temps(env, node)
-            #arg.release_target_temp(env)
-            #node.release_temp(env)
-        self.iterator.release_temp(env)
-    
-#	def release_target_temp(self, env):
-#		#for arg in self.args:
-#		#	arg.release_target_temp(env)
-#		#for node in self.coerced_unpacked_items:
-#		#	node.release_temp(env)
-#		self.iterator.release_temp(env)
-    
-    def generate_result_code(self, code):
-        self.generate_operation_code(code)
-    
-    def generate_assignment_code(self, rhs, code):
-        iter_result = self.iterator.result()
-        code.putln(
-            "%s = PyObject_GetIter(%s); if (!%s) %s" % (
-                iter_result,
-                rhs.py_result(),
-                iter_result,
-                code.error_goto(self.pos)))
-        rhs.generate_disposal_code(code)
-        for i in range(len(self.args)):
-            item = self.unpacked_items[i]
-            code.use_utility_code(unpacking_utility_code)
-            unpack_code = "__Pyx_UnpackItem(%s)" % (
-                self.iterator.py_result())
-            item_result = item.result()
-            code.putln(
-                "%s = %s; if (!%s) %s" % (
-                    item_result,
-                    typecast(item.ctype(), py_object_type, unpack_code),
-                    item_result,
-                    code.error_goto(self.pos)))
-            value_node = self.coerced_unpacked_items[i]
-            value_node.generate_evaluation_code(code)
-            self.args[i].generate_assignment_code(value_node, code)
-        code.putln(
-            "if (__Pyx_EndUnpack(%s) < 0) %s" % (
-                self.iterator.py_result(),
-                code.error_goto(self.pos)))
-        if debug_disposal_code:
-            print "UnpackNode.generate_assignment_code:"
-            print "...generating disposal code for", rhs
-        self.iterator.generate_disposal_code(code)
-
-
-class TupleNode(SequenceNode):
-    #  Tuple constructor.
-    
-    gil_message = "Constructing Python tuple"
-
-    def compile_time_value(self, denv):
-        values = self.compile_time_value_list(denv)
-        try:
-            return tuple(values)
-        except Exception, e:
-            self.compile_time_value_error(e)
-    
-    def generate_operation_code(self, code):
-        result = self.result()
-        code.putln(
-            "%s = PyTuple_New(%s); if (!%s) %s" % (
-                result,
-                len(self.args),
-                result,
-                code.error_goto(self.pos)))
-        for i in range(len(self.args)):
-            arg = self.args[i]
-            arg_result = arg.py_result()
-            # ??? Change this to use make_owned_reference?
-            if not arg.result_in_temp():
-                code.put_incref(arg_result)
-            code.putln(
-                "PyTuple_SET_ITEM(%s, %s, %s);" % (
-                    result,
-                    i,
-                    arg_result))
-    
-    def generate_subexpr_disposal_code(self, code):
-        # We call generate_post_assignment_code here instead
-        # of generate_disposal_code, because values were stored
-        # in the tuple using a reference-stealing operation.
-        for arg in self.args:
-            arg.generate_post_assignment_code(code)		
-
-
-class ListNode(SequenceNode):
-    #  List constructor.
-    
-    gil_message = "Constructing Python list"
-    
-    def compile_time_value(self, denv):
-        return self.compile_time_value_list(denv)
-
-    def generate_operation_code(self, code):
-        result = self.result()
-        code.putln("%s = PyList_New(%s); if (!%s) %s" %
-            (result,
-            len(self.args),
-            result,
-            code.error_goto(self.pos)))
-        for i in range(len(self.args)):
-            arg = self.args[i]
-            arg_result = arg.py_result()
-            #if not arg.is_temp:
-            if not arg.result_in_temp():
-                code.put_incref(arg_result)
-            code.putln("PyList_SET_ITEM(%s, %s, %s);" %
-                (result,
-                i,
-                arg_result))
-                
-    def generate_subexpr_disposal_code(self, code):
-        # We call generate_post_assignment_code here instead
-        # of generate_disposal_code, because values were stored
-        # in the list using a reference-stealing operation.
-        for arg in self.args:
-            arg.generate_post_assignment_code(code)		
-
-
-class DictNode(ExprNode):
-    #  Dictionary constructor.
-    #
-    #  key_value_pairs  [(ExprNode, ExprNode)]
-    
-    def compile_time_value(self, denv):
-        pairs = [(key.compile_time_value(denv), value.compile_time_value(denv))
-            for (key, value) in self.key_value_pairs]
-        try:
-            return dict(pairs)
-        except Exception, e:
-            self.compile_time_value_error(e)
-    
-    def analyse_types(self, env):
-        new_pairs = []
-        for key, value in self.key_value_pairs:
-            key.analyse_types(env)
-            value.analyse_types(env)
-            key = key.coerce_to_pyobject(env)
-            value = value.coerce_to_pyobject(env)
-            new_pairs.append((key, value))
-        self.key_value_pairs = new_pairs
-        self.type = py_object_type
-        self.gil_check(env)
-        self.is_temp = 1
-    
-    gil_message = "Constructing Python dict"
-    
-    def allocate_temps(self, env, result = None):
-        #  Custom method used here because key-value
-        #  pairs are evaluated and used one at a time.
-        self.allocate_temp(env, result)
-        for key, value in self.key_value_pairs:
-            key.allocate_temps(env)
-            value.allocate_temps(env)
-            key.release_temp(env)
-            value.release_temp(env)
-    
-    def generate_evaluation_code(self, code):
-        #  Custom method used here because key-value
-        #  pairs are evaluated and used one at a time.
-        result = self.result()
-        code.putln(
-            "%s = PyDict_New(); if (!%s) %s" % (
-                result,
-                result,
-                code.error_goto(self.pos)))
-        for key, value in self.key_value_pairs:
-            key.generate_evaluation_code(code)
-            value.generate_evaluation_code(code)
-            code.putln(
-                "if (PyDict_SetItem(%s, %s, %s) < 0) %s" % (
-                    result,
-                    key.py_result(),
-                    value.py_result(),
-                    code.error_goto(self.pos)))
-            key.generate_disposal_code(code)
-            value.generate_disposal_code(code)
-    
-
-class ClassNode(ExprNode):
-    #  Helper class used in the implementation of Python
-    #  class definitions. Constructs a class object given
-    #  a name, tuple of bases and class dictionary.
-    #
-    #  name         ExprNode           Name of the class
-    #  bases        ExprNode           Base class tuple
-    #  dict         ExprNode           Class dict (not owned by this node)
-    #  doc          ExprNode or None   Doc string
-    #  module_name  string             Name of defining module
-    
-    subexprs = ['name', 'bases', 'doc']
-    
-    def analyse_types(self, env):
-        self.name.analyse_types(env)
-        self.name = self.name.coerce_to_pyobject(env)
-        self.bases.analyse_types(env)
-        if self.doc:
-            self.doc.analyse_types(env)
-            self.doc = self.doc.coerce_to_pyobject(env)
-        self.module_name = env.global_scope().qualified_name
-        self.type = py_object_type
-        self.gil_check(env)
-        self.is_temp = 1
-#		env.use_utility_code(create_class_utility_code)
-    
-    gil_message = "Constructing Python class"
-    
-    def generate_result_code(self, code):
-        result = self.result()
-        if self.doc:
-            code.putln(
-                'if (PyDict_SetItemString(%s, "__doc__", %s) < 0) %s' % (
-                    self.dict.py_result(),
-                    self.doc.py_result(),
-                    code.error_goto(self.pos)))
-        code.use_utility_code(create_class_utility_code)
-        code.putln(
-            '%s = __Pyx_CreateClass(%s, %s, %s, "%s"); if (!%s) %s' % (
-                result,
-                self.bases.py_result(),
-                self.dict.py_result(),
-                self.name.py_result(),
-                self.module_name,
-                result,
-                code.error_goto(self.pos)))
-
-
-class UnboundMethodNode(ExprNode):
-    #  Helper class used in the implementation of Python
-    #  class definitions. Constructs an unbound method
-    #  object from a class and a function.
-    #
-    #  class_cname   string     C var holding the class object
-    #  function      ExprNode   Function object
-    
-    subexprs = ['function']
-    
-    def analyse_types(self, env):
-        self.function.analyse_types(env)
-        self.type = py_object_type
-        self.gil_check(env)
-        self.is_temp = 1
-    
-    gil_message = "Constructing an unbound method"
-    
-    def generate_result_code(self, code):
-        result = self.result()
-        code.putln(
-            "%s = PyMethod_New(%s, 0, %s); if (!%s) %s" % (
-                result,
-                self.function.py_result(),
-                self.class_cname,
-                result,
-                code.error_goto(self.pos)))
-
-
-class PyCFunctionNode(AtomicExprNode):
-    #  Helper class used in the implementation of Python
-    #  class definitions. Constructs a PyCFunction object
-    #  from a PyMethodDef struct.
-    #
-    #  pymethdef_cname   string   PyMethodDef structure
-    #  module_name       string   Name of defining module
-    
-    def analyse_types(self, env):
-        self.type = py_object_type
-        self.module_name = env.global_scope().module_name
-        self.gil_check(env)
-        self.is_temp = 1
-    
-    gil_message = "Constructing Python function"
-    
-    def generate_result_code(self, code):
-        result = self.result()
-        code.putln(
-            "%s = PyCFunction_NewEx(&%s, 0, %s); if (!%s) %s" % (
-                result,
-                self.pymethdef_cname,
-                code.get_py_string_const(self.module_name),
-                result,
-                code.error_goto(self.pos)))
-
-#-------------------------------------------------------------------
-#
-#  Unary operator nodes
-#
-#-------------------------------------------------------------------
-
-compile_time_unary_operators = {
-    'not': operator.not_,
-    '~': operator.inv,
-    '-': operator.neg,
-    '+': operator.pos,
-}
-
-class UnopNode(ExprNode):
-    #  operator     string
-    #  operand      ExprNode
-    #
-    #  Processing during analyse_expressions phase:
-    #
-    #    analyse_c_operation
-    #      Called when the operand is not a pyobject.
-    #      - Check operand type and coerce if needed.
-    #      - Determine result type and result code fragment.
-    #      - Allocate temporary for result if needed.
-    
-    subexprs = ['operand']
-    
-    def compile_time_value(self, denv):
-        func = compile_time_unary_operators.get(self.operator)
-        if not func:
-            error(self.pos,
-                "Unary '%s' not supported in compile-time expression"
-                    % self.operator)
-        operand = self.operand.compile_time_value(denv)
-        try:
-            return func(operand)
-        except Exception, e:
-            self.compile_time_value_error(e)
-
-    def analyse_types(self, env):
-        self.operand.analyse_types(env)
-        if self.is_py_operation():
-            self.coerce_operand_to_pyobject(env)
-            self.type = py_object_type
-            self.gil_check(env)
-            self.is_temp = 1
-        else:
-            self.analyse_c_operation(env)
-    
-    def check_const(self):
-        self.operand.check_const()
-    
-    def is_py_operation(self):
-        return self.operand.type.is_pyobject
-    
-    def coerce_operand_to_pyobject(self, env):
-        self.operand = self.operand.coerce_to_pyobject(env)
-    
-    def generate_result_code(self, code):
-        if self.operand.type.is_pyobject:
-            self.generate_py_operation_code(code)
-        else:
-            if self.is_temp:
-                self.generate_c_operation_code(code)
-    
-    def generate_py_operation_code(self, code):
-        function = self.py_operation_function()
-        result = self.result()
-        code.putln(
-            "%s = %s(%s); if (!%s) %s" % (
-                result, 
-                function, 
-                self.operand.py_result(),
-                result,
-                code.error_goto(self.pos)))
-        
-    def type_error(self):
-        if not self.operand.type.is_error:
-            error(self.pos, "Invalid operand type for '%s' (%s)" %
-                (self.operator, self.operand.type))
-        self.type = PyrexTypes.error_type
-
-
-class NotNode(ExprNode):
-    #  'not' operator
-    #
-    #  operand   ExprNode
-    
-    def compile_time_value(self, denv):
-        operand = self.operand.compile_time_value(denv)
-        try:
-            return not operand
-        except Exception, e:
-            self.compile_time_value_error(e)
-
-    subexprs = ['operand']
-    
-    def analyse_types(self, env):
-        self.operand.analyse_types(env)
-        self.operand = self.operand.coerce_to_boolean(env)
-        self.type = PyrexTypes.c_int_type
-    
-    def calculate_result_code(self):
-        return "(!%s)" % self.operand.result()
-    
-    def generate_result_code(self, code):
-        pass
-
-
-class UnaryPlusNode(UnopNode):
-    #  unary '+' operator
-    
-    operator = '+'
-    
-    def analyse_c_operation(self, env):
-        self.type = self.operand.type
-    
-    def py_operation_function(self):
-        return "PyNumber_Positive"
-    
-    def calculate_result_code(self):
-        return self.operand.result()
-
-
-class UnaryMinusNode(UnopNode):
-    #  unary '-' operator
-    
-    operator = '-'
-    
-    def analyse_c_operation(self, env):
-        if self.operand.type.is_numeric:
-            self.type = self.operand.type
-        else:
-            self.type_error()
-    
-    def py_operation_function(self):
-        return "PyNumber_Negative"
-    
-    def calculate_result_code(self):
-        return "(-%s)" % self.operand.result()
-
-
-class TildeNode(UnopNode):
-    #  unary '~' operator
-
-    def analyse_c_operation(self, env):
-        if self.operand.type.is_int:
-            self.type = self.operand.type
-        else:
-            self.type_error()
-
-    def py_operation_function(self):
-        return "PyNumber_Invert"
-    
-    def calculate_result_code(self):
-        return "(~%s)" % self.operand.result()
-
-
-class AmpersandNode(ExprNode):
-    #  The C address-of operator.
-    #
-    #  operand  ExprNode
-    
-    subexprs = ['operand']
-
-    def analyse_types(self, env):
-        self.operand.analyse_types(env)
-        argtype = self.operand.type
-        if not (argtype.is_cfunction or self.operand.is_lvalue()):
-            self.error("Taking address of non-lvalue")
-            return
-        if argtype.is_pyobject:
-            self.error("Cannot take address of Python variable")
-            return
-        self.type = PyrexTypes.c_ptr_type(argtype)
-    
-    def check_const(self):
-        self.operand.check_const_addr()
-    
-    def error(self, mess):
-        error(self.pos, mess)
-        self.type = PyrexTypes.error_type
-        self.result_code = "<error>"
-    
-    def calculate_result_code(self):
-        return "(&%s)" % self.operand.result()
-
-    def generate_result_code(self, code):
-        pass
-    
-
-unop_node_classes = {
-    "+":  UnaryPlusNode,
-    "-":  UnaryMinusNode,
-    "~":  TildeNode,
-}
-
-def unop_node(pos, operator, operand):
-    # Construct unnop node of appropriate class for 
-    # given operator.
-    return unop_node_classes[operator](pos, 
-        operator = operator, 
-        operand = operand)
-
-
-class TypecastNode(ExprNode):
-    #  C type cast
-    #
-    #  base_type    CBaseTypeNode
-    #  declarator   CDeclaratorNode
-    #  operand      ExprNode
-    
-    subexprs = ['operand']
-    
-    def analyse_types(self, env):
-        base_type = self.base_type.analyse(env)
-        _, self.type = self.declarator.analyse(base_type, env)
-        if self.type.is_cfunction:
-            error(self.pos,
-                "Cannot cast to a function type")
-            self.type = PyrexTypes.error_type
-        self.operand.analyse_types(env)
-        to_py = self.type.is_pyobject
-        from_py = self.operand.type.is_pyobject
-        if from_py and not to_py and self.operand.is_ephemeral():
-            error(self.pos, "Casting temporary Python object to non-Python type")
-        #  Must do the following, so that the result can be increfed without
-        #  the operand getting evaluated twice.
-        if to_py and not from_py:
-            #self.result_ctype = py_object_type
-            #self.is_temp = 1
-            self.operand = self.operand.coerce_to_simple(env)
-    
-    def check_const(self):
-        self.operand.check_const()
-    
-    def calculate_result_code(self):
-        opnd = self.operand
-        result_code = self.type.cast_code(opnd.result())
-        return result_code
-    
-    def result_as(self, type):
-        if not self.is_temp and type.is_pyobject and self.type.is_pyobject:
-            #  Optimise away some unnecessary casting
-            return self.operand.result_as(type)
-        else:
-            return ExprNode.result_as(self, type)
-
-    def generate_result_code(self, code):
-        if self.is_temp:
-            code.putln(
-                "%s = %s;" % (
-                    self.result(),
-                    self.operand.py_result()))
-            code.put_incref(self.py_result())
-
-
-class SizeofNode(ExprNode):
-    #  Base class for sizeof(x) expression nodes.
-    #
-    #  sizeof_code   string
-
-    subexprs = []
-    
-    def check_const(self):
-        pass
-    
-    def analyse_types(self, env):
-        self.analyse_argument(env)
-        self.type = PyrexTypes.c_size_t_type
-
-    def analyse_type_argument(self, arg_type):
-        if arg_type.is_pyobject:
-            error(self.pos, "Cannot take sizeof Python object")
-        elif arg_type.is_void:
-            error(self.pos, "Cannot take sizeof void")
-        elif not arg_type.is_complete():
-            error(self.pos, "Cannot take sizeof incomplete type '%s'" % arg_type)
-        arg_code = arg_type.declaration_code("")
-        self.sizeof_code = "(sizeof(%s))" % arg_code
-        
-    def calculate_result_code(self):
-        return self.sizeof_code
-
-    def generate_result_code(self, code):
-        pass
-
-
-class SizeofTypeNode(SizeofNode):
-    #  C sizeof function applied to a type
-    #
-    #  base_type   CBaseTypeNode
-    #  declarator  CDeclaratorNode
-    
-    def analyse_argument(self, env):
-        base_type = self.base_type.analyse(env)
-        _, arg_type = self.declarator.analyse(base_type, env)
-        self.analyse_type_argument(arg_type)
-
-        
-class SizeofVarNode(SizeofNode):
-    #  C sizeof function applied to a variable or qualified name
-    #  (which may actually refer to a type)
-    #
-    #  operand   ExprNode
-    
-    #subexprs = ['operand']
-    
-    def analyse_argument(self, env):
-        is_type = 0
-        operand = self.operand
-        if operand.analyse_as_cimported_attribute(env, allow_type = 1):
-            if operand.entry.is_type:
-                is_type = 1
-                self.analyse_type_argument(operand.entry.type)
-        else:
-            self.operand.analyse_types(env)
-            self.operand.mark_vars_used()
-        if not is_type:
-            self.sizeof_code = "(sizeof(%s))" % operand.result()
-
-
-#-------------------------------------------------------------------
-#
-#  Binary operator nodes
-#
-#-------------------------------------------------------------------
-
-compile_time_binary_operators = {
-    '<': operator.lt,
-    '<=': operator.le,
-    '==': operator.eq,
-    '!=': operator.ne,
-    '>=': operator.ge,
-    '>': operator.gt,
-    'is': operator.is_,
-    'is_not': operator.is_not,
-    '+': operator.add,
-    '&': operator.and_,
-    '/': operator.div,
-    '//': operator.floordiv,
-    '<<': operator.lshift,
-    '%': operator.mod,
-    '*': operator.mul,
-    '|': operator.or_,
-    '**': operator.pow,
-    '>>': operator.rshift,
-    '-': operator.sub,
-    #'/': operator.truediv,
-    '^': operator.xor,
-    'in': lambda x, y: x in y,
-    'not_in': lambda x, y: x not in y,
-}
-
-def get_compile_time_binop(node):
-    func = compile_time_binary_operators.get(node.operator)
-    if not func:
-        error(node.pos,
-            "Binary '%s' not supported in compile-time expression"
-                % node.operator)
-    return func
-
-class BinopNode(ExprNode):
-    #  operator     string
-    #  operand1     ExprNode
-    #  operand2     ExprNode
-    #
-    #  Processing during analyse_expressions phase:
-    #
-    #    analyse_c_operation
-    #      Called when neither operand is a pyobject.
-    #      - Check operand types and coerce if needed.
-    #      - Determine result type and result code fragment.
-    #      - Allocate temporary for result if needed.
-    
-    subexprs = ['operand1', 'operand2']
-    
-    def compile_time_value(self, denv):
-        func = get_compile_time_binop(self)
-        operand1 = self.operand1.compile_time_value(denv)
-        operand2 = self.operand2.compile_time_value(denv)
-        try:
-            return func(operand1, operand2)
-        except Exception, e:
-            self.compile_time_value_error(e)
-
-    def analyse_types(self, env):
-        self.operand1.analyse_types(env)
-        self.operand2.analyse_types(env)
-        if self.is_py_operation():
-            self.coerce_operands_to_pyobjects(env)
-            self.type = py_object_type
-            self.gil_check(env)
-            self.is_temp = 1
-        else:
-            self.analyse_c_operation(env)
-    
-    def is_py_operation(self):
-        return (self.operand1.type.is_pyobject 
-            or self.operand2.type.is_pyobject)
-    
-    def coerce_operands_to_pyobjects(self, env):
-        self.operand1 = self.operand1.coerce_to_pyobject(env)
-        self.operand2 = self.operand2.coerce_to_pyobject(env)
-    
-    def check_const(self):
-        self.operand1.check_const()
-        self.operand2.check_const()
-    
-    def generate_result_code(self, code):
-        #print "BinopNode.generate_result_code:", self.operand1, self.operand2 ###
-        if self.operand1.type.is_pyobject:
-            function = self.py_operation_function()
-            if function == "PyNumber_Power":
-                extra_args = ", Py_None"
-            else:
-                extra_args = ""
-            result = self.result()
-            code.putln(
-                "%s = %s(%s, %s%s); if (!%s) %s" % (
-                    result, 
-                    function, 
-                    self.operand1.py_result(),
-                    self.operand2.py_result(),
-                    extra_args,
-                    result,
-                    code.error_goto(self.pos)))
-        else:
-            if self.is_temp:
-                self.generate_c_operation_code(code)
-    
-    def type_error(self):
-        if not (self.operand1.type.is_error
-                or self.operand2.type.is_error):
-            error(self.pos, "Invalid operand types for '%s' (%s; %s)" %
-                (self.operator, self.operand1.type, 
-                    self.operand2.type))
-        self.type = PyrexTypes.error_type
-
-
-class NumBinopNode(BinopNode):
-    #  Binary operation taking numeric arguments.
-    
-    def analyse_c_operation(self, env):
-        type1 = self.operand1.type
-        type2 = self.operand2.type
-        if self.operator == "**" and type1.is_int and type2.is_int:
-            error(self.pos, "** with two C int types is ambiguous")
-            self.type = error_type
-            return
-        self.type = self.compute_c_result_type(type1, type2)
-        if not self.type:
-            self.type_error()
-    
-    def compute_c_result_type(self, type1, type2):
-        if self.c_types_okay(type1, type2):
-            return PyrexTypes.widest_numeric_type(type1, type2)
-        else:
-            return None
-    
-    def c_types_okay(self, type1, type2):
-        #print "NumBinopNode.c_types_okay:", type1, type2 ###
-        return (type1.is_numeric  or type1.is_enum) \
-            and (type2.is_numeric  or type2.is_enum)
-
-    def calculate_result_code(self):
-        return "(%s %s %s)" % (
-            self.operand1.result(), 
-            self.operator, 
-            self.operand2.result())
-    
-    def py_operation_function(self):
-        return self.py_functions[self.operator]
-
-    py_functions = {
-        "|":		"PyNumber_Or",
-        "^":		"PyNumber_Xor",
-        "&":		"PyNumber_And",
-        "<<":		"PyNumber_Lshift",
-        ">>":		"PyNumber_Rshift",
-        "+":		"PyNumber_Add",
-        "-":		"PyNumber_Subtract",
-        "*":		"PyNumber_Multiply",
-        "/":		"PyNumber_Divide",
-        "%":		"PyNumber_Remainder",
-        "**":   "PyNumber_Power"
-    }
-
-
-class IntBinopNode(NumBinopNode):
-    #  Binary operation taking integer arguments.
-    
-    def c_types_okay(self, type1, type2):
-        #print "IntBinopNode.c_types_okay:", type1, type2 ###
-        return (type1.is_int or type1.is_enum) \
-            and (type2.is_int or type2.is_enum)
-
-    
-class AddNode(NumBinopNode):
-    #  '+' operator.
-    
-    def is_py_operation(self):
-        if self.operand1.type.is_string \
-            and self.operand2.type.is_string:
-                return 1
-        else:
-            return NumBinopNode.is_py_operation(self)
-
-    def compute_c_result_type(self, type1, type2):
-        #print "AddNode.compute_c_result_type:", type1, self.operator, type2 ###
-        if (type1.is_ptr or type1.is_array) and (type2.is_int or type2.is_enum):
-            return type1
-        elif (type2.is_ptr or type2.is_array) and (type1.is_int or type1.is_enum):
-            return type2
-        else:
-            return NumBinopNode.compute_c_result_type(
-                self, type1, type2)
-
-
-class SubNode(NumBinopNode):
-    #  '-' operator.
-    
-    def compute_c_result_type(self, type1, type2):
-        if (type1.is_ptr or type1.is_array) and (type2.is_int or type2.is_enum):
-            return type1
-        elif (type1.is_ptr or type1.is_array) and (type2.is_ptr or type2.is_array):
-            return PyrexTypes.c_int_type
-        else:
-            return NumBinopNode.compute_c_result_type(
-                self, type1, type2)
-
-
-class MulNode(NumBinopNode):
-    #  '*' operator.
-    
-    def is_py_operation(self):
-        type1 = self.operand1.type
-        type2 = self.operand2.type
-        if (type1.is_string and type2.is_int) \
-            or (type2.is_string and type1.is_int):
-                return 1
-        else:
-            return NumBinopNode.is_py_operation(self)
-
-
-class ModNode(IntBinopNode):
-    #  '%' operator.
-    
-    def is_py_operation(self):
-        return (self.operand1.type.is_string
-            or self.operand2.type.is_string
-            or IntBinopNode.is_py_operation(self))
-
-
-class PowNode(NumBinopNode):
-    #  '**' operator.
-    
-    def analyse_types(self, env):
-        env.pow_function_used = 1
-        NumBinopNode.analyse_types(self, env)
-    
-    def compute_c_result_type(self, type1, type2):
-        if self.c_types_okay(type1, type2):
-            return PyrexTypes.c_double_type
-        else:
-            return None
-    
-    def calculate_result_code(self):
-        return "pow(%s, %s)" % (
-            self.operand1.result(), self.operand2.result())
-            
-
-class BoolBinopNode(ExprNode):
-    #  Short-circuiting boolean operation.
-    #
-    #  operator     string
-    #  operand1     ExprNode
-    #  operand2     ExprNode
-    #  temp_bool    ExprNode     used internally
-    
-    temp_bool = None
-    
-    subexprs = ['operand1', 'operand2', 'temp_bool']
-    
-    def compile_time_value(self, denv):
-        if self.operator == 'and':
-            return self.operand1.compile_time_value(denv) \
-                and self.operand2.compile_time_value(denv)
-        else:
-            return self.operand1.compile_time_value(denv) \
-                or self.operand2.compile_time_value(denv)
-
-    def analyse_types(self, env):
-        self.operand1.analyse_types(env)
-        self.operand2.analyse_types(env)
-        if self.operand1.type.is_pyobject or \
-                self.operand2.type.is_pyobject:
-            self.operand1 = self.operand1.coerce_to_pyobject(env)
-            self.operand2 = self.operand2.coerce_to_pyobject(env)
-            self.temp_bool = TempNode(self.pos,
-                PyrexTypes.c_int_type, env)
-            self.type = py_object_type
-            self.gil_check(env)
-        else:
-            self.operand1 = self.operand1.coerce_to_boolean(env)
-            self.operand2 = self.operand2.coerce_to_boolean(env)
-            self.type = PyrexTypes.c_int_type
-        # For what we're about to do, it's vital that
-        # both operands be temp nodes.
-        self.operand1 = self.operand1.coerce_to_temp(env) #CTT
-        self.operand2 = self.operand2.coerce_to_temp(env)
-        self.is_temp = 1
-    
-    gil_message = "Truth-testing Python object"
-    
-    def allocate_temps(self, env, result_code = None):
-        #  We don't need both operands at the same time, and
-        #  one of the operands will also be our result. So we
-        #  use an allocation strategy here which results in
-        #  this node and both its operands sharing the same
-        #  result variable. This allows us to avoid some 
-        #  assignments and increfs/decrefs that would otherwise
-        #  be necessary.
-        self.allocate_temp(env, result_code)
-        self.operand1.allocate_temps(env, self.result_code)
-        if self.temp_bool:
-            self.temp_bool.allocate_temp(env)
-            self.temp_bool.release_temp(env)
-        self.operand2.allocate_temps(env, self.result_code)
-        #  We haven't called release_temp on either operand,
-        #  because although they are temp nodes, they don't own 
-        #  their result variable. And because they are temp
-        #  nodes, any temps in their subnodes will have been
-        #  released before their allocate_temps returned.
-        #  Therefore, they contain no temp vars that need to
-        #  be released.
-
-    def check_const(self):
-        self.operand1.check_const()
-        self.operand2.check_const()
-    
-    def calculate_result_code(self):
-        return "(%s %s %s)" % (
-            self.operand1.result(),
-            self.py_to_c_op[self.operator],
-            self.operand2.result())
-    
-    py_to_c_op = {'and': "&&", 'or': "||"}
-
-    def generate_evaluation_code(self, code):
-        self.operand1.generate_evaluation_code(code)
-        test_result = self.generate_operand1_test(code)
-        if self.operator == 'and':
-            sense = ""
-        else:
-            sense = "!"
-        code.putln(
-            "if (%s%s) {" % (
-                sense,
-                test_result))
-        self.operand1.generate_disposal_code(code)
-        self.operand2.generate_evaluation_code(code)
-        code.putln(
-            "}")
-    
-    def generate_operand1_test(self, code):
-        #  Generate code to test the truth of the first operand.
-        if self.type.is_pyobject:
-            test_result = self.temp_bool.result()
-            code.putln(
-                "%s = PyObject_IsTrue(%s); if (%s < 0) %s" % (
-                    test_result,
-                    self.operand1.py_result(),
-                    test_result,
-                    code.error_goto(self.pos)))
-        else:
-            test_result = self.operand1.result()
-        return test_result
-
-
-class CmpNode:
-    #  Mixin class containing code common to PrimaryCmpNodes
-    #  and CascadedCmpNodes.
-    
-    def cascaded_compile_time_value(self, operand1, denv):
-        func = get_compile_time_binop(self)
-        operand2 = self.operand2.compile_time_value(denv)
-        try:
-            result = func(operand1, operand2)
-        except Exception, e:
-            self.compile_time_value_error(e)
-            result = None
-        if result:
-            cascade = self.cascade
-            if cascade:
-                result = result and cascade.compile_time_value(operand2, denv)
-        return result
-
-    def is_python_comparison(self):
-        return (self.has_python_operands()
-            or (self.cascade and self.cascade.is_python_comparison())
-            or self.operator in ('in', 'not_in'))
-
-    def check_types(self, env, operand1, op, operand2):
-        if not self.types_okay(operand1, op, operand2):
-            error(self.pos, "Invalid types for '%s' (%s, %s)" %
-                (self.operator, operand1.type, operand2.type))
-    
-    def types_okay(self, operand1, op, operand2):
-        type1 = operand1.type
-        type2 = operand2.type
-        if type1.is_error or type2.is_error:
-            return 1
-        if type1.is_pyobject: # type2 will be, too
-            return 1
-        elif type1.is_ptr or type1.is_array:
-            return type1.is_null_ptr or type2.is_null_ptr \
-                or ((type2.is_ptr or type2.is_array)
-                    and type1.base_type.same_as(type2.base_type))
-        elif ((type1.is_numeric and type2.is_numeric
-                    or type1.is_enum and (type2.is_int or type1.same_as(type2))
-                    or type1.is_int and type2.is_enum)
-                and op not in ('is', 'is_not')):
-            return 1
-        else:
-            return 0
-
-    def generate_operation_code(self, code, result, 
-            operand1, op , operand2):
-        if op == 'in' or op == 'not_in':
-            code.putln(
-                "%s = PySequence_Contains(%s, %s); if (%s < 0) %s" % (
-                    result, 
-                    operand2.py_result(), 
-                    operand1.py_result(), 
-                    result,
-                    code.error_goto(self.pos)))
-            if op == 'not_in':
-                code.putln(
-                    "%s = !%s;" % (
-                        result, result))
-        elif (operand1.type.is_pyobject
-            and op not in ('is', 'is_not')):
-                code.putln(
-                    "if (PyObject_Cmp(%s, %s, &%s) < 0) %s" % (
-                        operand1.py_result(), 
-                        operand2.py_result(), 
-                        result,
-                        code.error_goto(self.pos)))
-                code.putln(
-                    "%s = %s %s 0;" % (
-                        result, result, op))
-        else:
-            type1 = operand1.type
-            type2 = operand2.type
-            if (type1.is_extension_type or type2.is_extension_type) \
-                    and not operand1.ctype().same_as(operand2.ctype()):
-                code1 = operand1.result_as(py_object_type)
-                code2 = operand2.result_as(py_object_type)
-            else:
-                code1 = operand1.result()
-                code2 = operand2.result()
-            code.putln("%s = %s %s %s;" % (
-                result, 
-                code1, 
-                self.c_operator(op), 
-                code2))
-    
-    def c_operator(self, op):
-        if op == 'is':
-            return "=="
-        elif op == 'is_not':
-            return "!="
-        else:
-            return op
-    
-
-class PrimaryCmpNode(ExprNode, CmpNode):
-    #  Non-cascaded comparison or first comparison of
-    #  a cascaded sequence.
-    #
-    #  operator      string
-    #  operand1      ExprNode
-    #  operand2      ExprNode
-    #  cascade       CascadedCmpNode
-    
-    #  We don't use the subexprs mechanism, because
-    #  things here are too complicated for it to handle.
-    #  Instead, we override all the framework methods
-    #  which use it.
-    
-    cascade = None
-    
-    def compile_time_value(self, denv):
-        operand1 = self.operand1.compile_time_value(denv)
-        return self.cascaded_compile_time_value(operand1, denv)
-
-    def analyse_types(self, env):
-        self.operand1.analyse_types(env)
-        self.operand2.analyse_types(env)
-        if self.cascade:
-            self.cascade.analyse_types(env, self.operand2)
-        self.is_pycmp = self.is_python_comparison()
-        if self.is_pycmp:
-            self.coerce_operands_to_pyobjects(env)
-        if self.cascade:
-            self.operand2 = self.operand2.coerce_to_simple(env)
-            self.cascade.coerce_cascaded_operands_to_temp(env)
-        self.check_operand_types(env)
-        self.type = PyrexTypes.c_int_type
-        if self.is_pycmp or self.cascade:
-            self.is_temp = 1
-    
-    def check_operand_types(self, env):
-        self.check_types(env, 
-            self.operand1, self.operator, self.operand2)
-        if self.cascade:
-            self.cascade.check_operand_types(env, self.operand2)
-    
-    def has_python_operands(self):
-        return (self.operand1.type.is_pyobject
-            or self.operand2.type.is_pyobject)
-    
-    def coerce_operands_to_pyobjects(self, env):
-        self.operand1 = self.operand1.coerce_to_pyobject(env)
-        self.operand2 = self.operand2.coerce_to_pyobject(env)
-        if self.cascade:
-            self.cascade.coerce_operands_to_pyobjects(env)
-        
-    def allocate_subexpr_temps(self, env):
-        self.operand1.allocate_temps(env)
-        self.operand2.allocate_temps(env)
-        if self.cascade:
-            self.cascade.allocate_subexpr_temps(env)
-    
-    def release_subexpr_temps(self, env):
-        self.operand1.release_temp(env)
-        self.operand2.release_temp(env)
-        if self.cascade:
-            self.cascade.release_subexpr_temps(env)
-    
-    def check_const(self):
-        self.operand1.check_const()
-        self.operand2.check_const()
-        if self.cascade:
-            self.not_const()
-
-    def calculate_result_code(self):
-        return "(%s %s %s)" % (
-            self.operand1.result(),
-            self.c_operator(self.operator),
-            self.operand2.result())
-    
-    def generate_evaluation_code(self, code):
-        self.operand1.generate_evaluation_code(code)
-        self.operand2.generate_evaluation_code(code)
-        if self.is_temp:
-            result = self.result()
-            self.generate_operation_code(code, result, 
-                self.operand1, self.operator, self.operand2)
-            if self.cascade:
-                self.cascade.generate_evaluation_code(code,
-                    result, self.operand2)
-            self.operand1.generate_disposal_code(code)
-            self.operand2.generate_disposal_code(code)
-    
-    def generate_subexpr_disposal_code(self, code):
-        #  If this is called, it is a non-cascaded cmp,
-        #  so only need to dispose of the two main operands.
-        self.operand1.generate_disposal_code(code)
-        self.operand2.generate_disposal_code(code)
-
-
-class CascadedCmpNode(Node, CmpNode):
-    #  A CascadedCmpNode is not a complete expression node. It 
-    #  hangs off the side of another comparison node, shares 
-    #  its left operand with that node, and shares its result 
-    #  with the PrimaryCmpNode at the head of the chain.
-    #
-    #  operator      string
-    #  operand2      ExprNode
-    #  cascade       CascadedCmpNode
-
-    cascade = None
-    
-    def analyse_types(self, env, operand1):
-        self.operand2.analyse_types(env)
-        if self.cascade:
-            self.cascade.analyse_types(env, self.operand2)
-    
-    def check_operand_types(self, env, operand1):
-        self.check_types(env, 
-            operand1, self.operator, self.operand2)
-        if self.cascade:
-            self.cascade.check_operand_types(env, self.operand2)
-    
-    def has_python_operands(self):
-        return self.operand2.type.is_pyobject
-
-    def coerce_operands_to_pyobjects(self, env):
-        self.operand2 = self.operand2.coerce_to_pyobject(env)
-        if self.cascade:
-            self.cascade.coerce_operands_to_pyobjects(env)
-
-    def coerce_cascaded_operands_to_temp(self, env):
-        if self.cascade:
-            #self.operand2 = self.operand2.coerce_to_temp(env) #CTT
-            self.operand2 = self.operand2.coerce_to_simple(env)
-            self.cascade.coerce_cascaded_operands_to_temp(env)
-    
-    def allocate_subexpr_temps(self, env):
-        self.operand2.allocate_temps(env)
-        if self.cascade:
-            self.cascade.allocate_subexpr_temps(env)
-    
-    def release_subexpr_temps(self, env):
-        self.operand2.release_temp(env)
-        if self.cascade:
-            self.cascade.release_subexpr_temps(env)
-    
-    def generate_evaluation_code(self, code, result, operand1):
-        code.putln("if (%s) {" % result)
-        self.operand2.generate_evaluation_code(code)
-        self.generate_operation_code(code, result, 
-            operand1, self.operator, self.operand2)
-        if self.cascade:
-            self.cascade.generate_evaluation_code(
-                code, result, self.operand2)
-        # Cascaded cmp result is always temp
-        self.operand2.generate_disposal_code(code)
-        code.putln("}")
-
-
-binop_node_classes = {
-    "or":		BoolBinopNode,
-    "and":	BoolBinopNode,
-    "|":		IntBinopNode,
-    "^":		IntBinopNode,
-    "&":		IntBinopNode,
-    "<<":		IntBinopNode,
-    ">>":		IntBinopNode,
-    "+":		AddNode,
-    "-":		SubNode,
-    "*":		MulNode,
-    "/":		NumBinopNode,
-    "%":		ModNode,
-    "**":		PowNode
-}
-
-def binop_node(pos, operator, operand1, operand2):
-    # Construct binop node of appropriate class for 
-    # given operator.
-    return binop_node_classes[operator](pos, 
-        operator = operator, 
-        operand1 = operand1, 
-        operand2 = operand2)
-
-#-------------------------------------------------------------------
-#
-#  Coercion nodes
-#
-#  Coercion nodes are special in that they are created during
-#  the analyse_types phase of parse tree processing.
-#  Their __init__ methods consequently incorporate some aspects
-#  of that phase.
-#
-#-------------------------------------------------------------------
-
-class CoercionNode(ExprNode):
-    #  Abstract base class for coercion nodes.
-    #
-    #  arg       ExprNode       node being coerced
-    
-    subexprs = ['arg']
-    
-    def __init__(self, arg):
-        self.pos = arg.pos
-        self.arg = arg
-        if debug_coercion:
-            print self, "Coercing", self.arg
-
-
-class CastNode(CoercionNode):
-    #  Wrap a node in a C type cast.
-    
-    def __init__(self, arg, new_type):
-        CoercionNode.__init__(self, arg)
-        self.type = new_type
-    
-    def calculate_result_code(self):
-        return self.arg.result_as(self.type)
-
-    def generate_result_code(self, code):
-        self.arg.generate_result_code(code)
-
-
-class PyTypeTestNode(CoercionNode):
-    #  This node is used to check that a generic Python
-    #  object is an instance of a particular extension type.
-    #  This node borrows the result of its argument node.
-
-    def __init__(self, arg, dst_type, env):
-        #  The arg is know to be a Python object, and
-        #  the dst_type is known to be an extension type.
-        assert dst_type.is_extension_type, "PyTypeTest on non extension type"
-        CoercionNode.__init__(self, arg)
-        self.type = dst_type
-        self.result_ctype = arg.ctype()
-#		env.use_utility_code(type_test_utility_code)
-        self.gil_check(env)
-    
-    gil_message = "Python type test"
-    
-    def result_in_temp(self):
-        return self.arg.result_in_temp()
-    
-    def is_ephemeral(self):
-        return self.arg.is_ephemeral()
-    
-    def calculate_result_code(self):
-        return self.arg.result()
-    
-    def generate_result_code(self, code):
-        if self.type.typeobj_is_available():
-            code.use_utility_code(type_test_utility_code)
-            code.putln(
-                "if (!__Pyx_TypeTest(%s, %s)) %s" % (
-                    self.arg.py_result(),
-                    self.type.typeptr_cname,
-                    code.error_goto(self.pos)))
-        else:
-            error(self.pos, "Cannot test type of extern C class "
-                "without type object name specification")
-                
-    def generate_post_assignment_code(self, code):
-        self.arg.generate_post_assignment_code(code)
-                
-                
-class CoerceToPyTypeNode(CoercionNode):
-    #  This node is used to convert a C data type
-    #  to a Python object.
-
-    def __init__(self, arg, env):
-        CoercionNode.__init__(self, arg)
-        self.type = py_object_type
-        self.gil_check(env)
-        self.is_temp = 1
-        if not arg.type.to_py_function:
-            error(arg.pos,
-                "Cannot convert '%s' to Python object" % arg.type)
-    
-    gil_message = "Converting to Python object"
-    
-    def generate_result_code(self, code):
-        function = self.arg.type.to_py_function
-        result = self.result()
-        code.putln('%s = %s(%s); if (!%s) %s' % (
-            result, 
-            function, 
-            self.arg.result(),
-            result, 
-            code.error_goto(self.pos)))
-
-
-class CoerceFromPyTypeNode(CoercionNode):
-    #  This node is used to convert a Python object
-    #  to a C data type.
-
-    def __init__(self, result_type, arg, env):
-        CoercionNode.__init__(self, arg)
-        self.type = result_type
-        self.is_temp = 1
-        if not result_type.from_py_function:
-            error(arg.pos,
-                "Cannot convert Python object to '%s'" % result_type)
-        if self.type.is_string and self.arg.is_ephemeral():
-            error(arg.pos,
-                "Obtaining char * from temporary Python value")
-    
-    def generate_result_code(self, code):
-        function = self.type.from_py_function
-        operand = self.arg.py_result()
-        rhs = "%s(%s)" % (function, operand)
-        if self.type.is_enum:
-            rhs = typecast(self.type, c_long_type, rhs)
-        result = self.result()
-        if self.type.is_string:
-            err_code = "!%s" % result
-        else:
-            err_code = "PyErr_Occurred()"
-        code.putln('%s = %s; if (%s) %s' % (
-            result, 
-            rhs,
-            err_code,
-            code.error_goto(self.pos)))
-
-
-class CoerceToBooleanNode(CoercionNode):
-    #  This node is used when a result needs to be used
-    #  in a boolean context.
-    
-    def __init__(self, arg, env):
-        CoercionNode.__init__(self, arg)
-        self.type = PyrexTypes.c_int_type
-        if arg.type.is_pyobject:
-            if env.nogil:
-                self.gil_error()
-            self.is_temp = 1
-    
-    gil_message = "Truth-testing Python object"
-    
-    def check_const(self):
-        if self.is_temp:
-            self.not_const()
-        self.arg.check_const()
-    
-    def calculate_result_code(self):
-        return "(%s != 0)" % self.arg.result()
-
-    def generate_result_code(self, code):
-        if self.arg.type.is_pyobject:
-            result = self.result()
-            code.putln(
-                "%s = PyObject_IsTrue(%s); if (%s < 0) %s" % (
-                    result, 
-                    self.arg.py_result(), 
-                    result,
-                    code.error_goto(self.pos)))
-
-
-class CoerceToTempNode(CoercionNode):
-    #  This node is used to force the result of another node
-    #  to be stored in a temporary. It is only used if the
-    #  argument node's result is not already in a temporary.
-
-    def __init__(self, arg, env):
-        CoercionNode.__init__(self, arg)
-        self.type = self.arg.type
-        self.is_temp = 1
-        if self.type.is_pyobject:
-            self.gil_check(env)
-            self.result_ctype = py_object_type
-    
-    gil_message = "Creating temporary Python reference"
-
-    
-    def generate_result_code(self, code):
-        #self.arg.generate_evaluation_code(code) # Already done
-        # by generic generate_subexpr_evaluation_code!
-        code.putln("%s = %s;" % (
-            self.result(), self.arg.result_as(self.ctype())))
-        if self.type.is_pyobject:
-            code.put_incref(self.py_result())
-
-
-class CloneNode(CoercionNode):
-    #  This node is employed when the result of another node needs
-    #  to be used multiple times. The argument node's result must
-    #  be in a temporary. This node "borrows" the result from the
-    #  argument node, and does not generate any evaluation or
-    #  disposal code for it. The original owner of the argument 
-    #  node is responsible for doing those things.
-    
-    subexprs = [] # Arg is not considered a subexpr
-    
-    def __init__(self, arg):
-        CoercionNode.__init__(self, arg)
-        self.type = arg.type
-        self.result_ctype = arg.result_ctype
-    
-    def calculate_result_code(self):
-        return self.arg.result()
-    
-    def generate_evaluation_code(self, code):
-        pass
-
-    def generate_result_code(self, code):
-        pass
-    
-#------------------------------------------------------------------------------------
-#
-#  Runtime support code
-#
-#------------------------------------------------------------------------------------
-
-get_name_utility_code = [
-"""
-static PyObject *__Pyx_GetName(PyObject *dict, char *name); /*proto*/
-""","""
-static PyObject *__Pyx_GetName(PyObject *dict, char *name) {
-    PyObject *result;
-    result = PyObject_GetAttrString(dict, name);
-    if (!result)
-        PyErr_SetString(PyExc_NameError, name);
-    return result;
-}
-"""]
-
-get_name_interned_utility_code = [
-"""
-static PyObject *__Pyx_GetName(PyObject *dict, PyObject *name); /*proto*/
-""","""
-static PyObject *__Pyx_GetName(PyObject *dict, PyObject *name) {
-    PyObject *result;
-    result = PyObject_GetAttr(dict, name);
-    if (!result)
-        PyErr_SetObject(PyExc_NameError, name);
-    return result;
-}
-"""]
-
-#------------------------------------------------------------------------------------
-
-import_utility_code = [
-"""
-static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list); /*proto*/
-""","""
-static PyObject *__Pyx_Import(PyObject *name, PyObject *from_list) {
-    PyObject *__import__ = 0;
-    PyObject *empty_list = 0;
-    PyObject *module = 0;
-    PyObject *global_dict = 0;
-    PyObject *empty_dict = 0;
-    PyObject *list;
-    __import__ = PyObject_GetAttrString(%(BUILTINS)s, "__import__");
-    if (!__import__)
-        goto bad;
-    if (from_list)
-        list = from_list;
-    else {
-        empty_list = PyList_New(0);
-        if (!empty_list)
-            goto bad;
-        list = empty_list;
-    }
-    global_dict = PyModule_GetDict(%(GLOBALS)s);
-    if (!global_dict)
-        goto bad;
-    empty_dict = PyDict_New();
-    if (!empty_dict)
-        goto bad;
-    module = PyObject_CallFunction(__import__, "OOOO",
-        name, global_dict, empty_dict, list);
-bad:
-    Py_XDECREF(empty_list);
-    Py_XDECREF(__import__);
-    Py_XDECREF(empty_dict);
-    return module;
-}
-""" % {
-    "BUILTINS": Naming.builtins_cname,
-    "GLOBALS":  Naming.module_cname,
-}]
-
-#------------------------------------------------------------------------------------
-#
-#get_exception_utility_code = [
-#"""
-#static PyObject *__Pyx_GetExcValue(void); /*proto*/
-#""","""
-#static PyObject *__Pyx_GetExcValue(void) {
-#	PyObject *type = 0, *value = 0, *tb = 0;
-#	PyObject *result = 0;
-#	PyThreadState *tstate = PyThreadState_Get();
-#	PyErr_Fetch(&type, &value, &tb);
-#	PyErr_NormalizeException(&type, &value, &tb);
-#	if (PyErr_Occurred())
-#		goto bad;
-#	if (!value) {
-#		value = Py_None;
-#		Py_INCREF(value);
-#	}
-#	Py_XDECREF(tstate->exc_type);
-#	Py_XDECREF(tstate->exc_value);
-#	Py_XDECREF(tstate->exc_traceback);
-#	tstate->exc_type = type;
-#	tstate->exc_value = value;
-#	tstate->exc_traceback = tb;
-#	result = value;
-#	Py_XINCREF(result);
-#	type = 0;
-#	value = 0;
-#	tb = 0;
-#bad:
-#	Py_XDECREF(type);
-#	Py_XDECREF(value);
-#	Py_XDECREF(tb);
-#	return result;
-#}
-#"""]
-#
-#------------------------------------------------------------------------------------
-
-unpacking_utility_code = [
-"""
-static PyObject *__Pyx_UnpackItem(PyObject *); /*proto*/
-static int __Pyx_EndUnpack(PyObject *); /*proto*/
-""","""
-static void __Pyx_UnpackError(void) {
-    PyErr_SetString(PyExc_ValueError, "unpack sequence of wrong size");
-}
-
-static PyObject *__Pyx_UnpackItem(PyObject *iter) {
-    PyObject *item;
-    if (!(item = PyIter_Next(iter))) {
-        if (!PyErr_Occurred())
-            __Pyx_UnpackError();
-    }
-    return item;
-}
-
-static int __Pyx_EndUnpack(PyObject *iter) {
-    PyObject *item;
-    if ((item = PyIter_Next(iter))) {
-        Py_DECREF(item);
-        __Pyx_UnpackError();
-        return -1;
-    }
-    else if (!PyErr_Occurred())
-        return 0;
-    else
-        return -1;
-}
-"""]
-
-#------------------------------------------------------------------------------------
-
-type_test_utility_code = [
-"""
-static int __Pyx_TypeTest(PyObject *obj, PyTypeObject *type); /*proto*/
-""","""
-static int __Pyx_TypeTest(PyObject *obj, PyTypeObject *type) {
-    if (!type) {
-        PyErr_Format(PyExc_SystemError, "Missing type object");
-        return 0;
-    }
-    if (obj == Py_None || PyObject_TypeCheck(obj, type))
-        return 1;
-    PyErr_Format(PyExc_TypeError, "Cannot convert %s to %s",
-        obj->ob_type->tp_name, type->tp_name);
-    return 0;
-}
-"""]
-
-#------------------------------------------------------------------------------------
-
-create_class_utility_code = [
-"""
-static PyObject *__Pyx_CreateClass(PyObject *bases, PyObject *dict, PyObject *name, char *modname); /*proto*/
-""","""
-static PyObject *__Pyx_CreateClass(
-    PyObject *bases, PyObject *dict, PyObject *name, char *modname)
-{
-    PyObject *py_modname;
-    PyObject *result = 0;
-    
-    py_modname = PyString_FromString(modname);
-    if (!py_modname)
-        goto bad;
-    if (PyDict_SetItemString(dict, "__module__", py_modname) < 0)
-        goto bad;
-    result = PyClass_New(bases, dict, name);
-bad:
-    Py_XDECREF(py_modname);
-    return result;
-}
-"""]
-
-#------------------------------------------------------------------------------------
-
-getitem_int_utility_code = [
-"""
-static PyObject *__Pyx_GetItemInt(PyObject *o, Py_ssize_t i); /*proto*/
-""","""
-static PyObject *__Pyx_GetItemInt(PyObject *o, Py_ssize_t i) {
-    PyTypeObject *t = o->ob_type;
-    PyObject *r;
-    if (t->tp_as_sequence && t->tp_as_sequence->sq_item)
-        r = PySequence_GetItem(o, i);
-    else {
-        PyObject *j = PyInt_FromLong(i);
-        if (!j)
-            return 0;
-        r = PyObject_GetItem(o, j);
-        Py_DECREF(j);
-    }
-    return r;
-}
-"""]
-
-#------------------------------------------------------------------------------------
-
-setitem_int_utility_code = [
-"""
-static int __Pyx_SetItemInt(PyObject *o, Py_ssize_t i, PyObject *v); /*proto*/
-""","""
-static int __Pyx_SetItemInt(PyObject *o, Py_ssize_t i, PyObject *v) {
-    PyTypeObject *t = o->ob_type;
-    int r;
-    if (t->tp_as_sequence && t->tp_as_sequence->sq_item)
-        r = PySequence_SetItem(o, i, v);
-    else {
-        PyObject *j = PyInt_FromLong(i);
-        if (!j)
-            return -1;
-        r = PyObject_SetItem(o, j, v);
-        Py_DECREF(j);
-    }
-    return r;
-}
-"""]