Python declarations.apply_visitor函数代码示例

 def visit_namespace(self ):
     self.__print_decl_header()
     if self.__recursive:
        for decl in self.__inst.declarations:
           prn = DeclPrinter( self.level + 1, self.__printDetails, self.__recursive )
           prn.instance = decl
           declarations.apply_visitor( prn, decl )

    def __parse_xml_file(self, xml_file):
        scanner_ = scanner_t(xml_file, self.__decl_factory, self.__config)
        scanner_.read()
        self.__xml_generator_from_xml_file = \
            scanner_.xml_generator_from_xml_file
        decls = scanner_.declarations()
        types = scanner_.types()
        files = scanner_.files()
        linker_ = linker.linker_t(
            decls=decls,
            types=types,
            access=scanner_.access(),
            membership=scanner_.members(),
            files=files,
            xml_generator_from_xml_file=self.__xml_generator_from_xml_file)
        for type_ in list(types.values()):
            # I need this copy because internaly linker change types collection
            linker_.instance = type_
            declarations.apply_visitor(linker_, type_)
        for decl in decls.values():
            linker_.instance = decl
            declarations.apply_visitor(linker_, decl)
        declarations_joiner.bind_aliases(iter(decls.values()))

        # Patch the declarations tree
        if self.__xml_generator_from_xml_file.is_castxml:
            patcher.update_unnamed_class(decls.values())
        patcher.fix_calldef_decls(
            scanner_.calldefs(), scanner_.enums(), self.__cxx_std)

        decls = [inst for inst in iter(decls.values()) if self.__check(inst)]
        return decls, list(files.values())

 def print_members(members_type, members, curr_level):
     print ' ' * curr_level * self.INDENT_SIZE + members_type.ljust( self.JUSTIFY )
     if self.__recursive:
        curr_level += 1
        for member in members:
           prn = DeclPrinter( curr_level + 1, self.__printDetails, self.__recursive )
           prn.instance = member
           declarations.apply_visitor( prn, member )

 def visit_free_function_type( self ):
     return_visitor = self.create_converter( self.user_type.return_type )
     return_type = declarations.apply_visitor( return_visitor, self.user_type.return_type )
     argtypes = []
     for arg in self.user_type.arguments_types:
         arg_visitor = self.create_converter( arg )
         argtypes.append( declarations.apply_visitor(arg_visitor, arg) )
     return declarations.call_invocation.join( "ctypes.CFUNCTYPE", [return_type] + argtypes )

def print_declarations( decls, detailed=True, recursive=True, writer=sys.stdout.write ):
    """ Print decl tree rooted at each of the included nodes.
        decls - either a single decl or a list of decls.
    """
    prn = decl_wrapper_printer_t(0, detailed, recursive, writer)
    if type(decls) is not list:
       decls = [decls]
    for d in decls:
       prn.level = 0
       prn.instance = d
       declarations.apply_visitor(prn, d)

def print_declarations( decls, detailed=True, recursive=True, writer=sys.stdout.write ):
    """
    print declarations tree

    :param decls: could be single :class:`pygccxml.declarations.declaration_t` object or list of them
    """
    prn = decl_wrapper_printer_t(0, detailed, recursive, writer)
    if type(decls) is not list:
       decls = [decls]
    for d in decls:
       prn.level = 0
       prn.instance = d
       declarations.apply_visitor(prn, d)

 def visit_declarated( self ):
     #TODO: the follwoing code removes typedefs
     if isinstance( self.user_type.declaration, declarations.typedef_t ):
         base_visitor = self.create_converter( self.user_type.declaration.type )
         return declarations.apply_visitor( base_visitor, base_visitor.user_type )
     else:
         return self.decl_formatter( self.user_type.declaration )

 def visit_array( self ):
     item_visitor = self.create_converter( declarations.array_item_type(self.user_type) )
     item_type = declarations.apply_visitor( item_visitor, item_visitor.user_type )
     size = declarations.array_size( self.user_type )
     if size == declarations.array_t.SIZE_UNKNOWN:
         size = 0
     return "( %s * %d )" % ( item_type, size )

    def __parse_xml_file(self, xml_file):
        scanner_ = scanner_t(xml_file, self.__decl_factory, self.__config)
        scanner_.read()
        decls = scanner_.declarations()
        types = scanner_.types()
        files = {}
        for file_id, file_path in scanner_.files().items():
            files[file_id] = self.__produce_full_file(file_path)
        linker_ = linker.linker_t(
            decls=decls,
            types=types,
            access=scanner_.access(),
            membership=scanner_.members(),
            files=files)
        for type_ in list(types.values()):
            # I need this copy because internaly linker change types collection
            linker_.instance = type_
            declarations.apply_visitor(linker_, type_)
        for decl in decls.values():
            linker_.instance = decl
            declarations.apply_visitor(linker_, decl)
        bind_aliases(iter(decls.values()))

        # Join declarations
        if self.__join_decls:
            for ns in iter(decls.values()):
                if isinstance(ns, declarations.namespace_t):
                    self.join_declarations(ns)

        # some times gccxml report typedefs defined in no namespace
        # it happens for example in next situation
        # template< typename X>
        # void ddd(){ typedef typename X::Y YY;}
        # if I will fail on this bug next time, the right way to fix it may be
        # different
        patcher.fix_calldef_decls(scanner_.calldefs(), scanner_.enums(),
                                  self.__cxx_std)
        decls = [
            inst for inst in iter(
                decls.values()) if isinstance(
                inst,
                declarations.namespace_t) and not inst.parent]
        return decls, list(files.values())

 def visit_reference( self ):
     no_ref = declarations.remove_const( declarations.remove_reference( self.user_type ) )
     if declarations.is_same( declarations.char_t(), no_ref ):
         return "ctypes.c_char_p"
     elif declarations.is_same( declarations.wchar_t(), no_ref ):
         return "ctypes.c_wchar_p"
     elif declarations.is_same( declarations.void_t(), no_ref ):
         return "ctypes.c_void_p"
     else:
         base_visitor = self.create_converter( self.user_type.base )
         internal_type_str = declarations.apply_visitor( base_visitor, base_visitor.user_type )
         return "ctypes.POINTER( %s )" % internal_type_str

 def visit_pointer( self ):
     no_ptr = declarations.remove_const( declarations.remove_pointer( self.user_type ) )
     if declarations.is_same( declarations.char_t(), no_ptr ) and self.treat_char_ptr_as_binary_data == False:
         return "ctypes.c_char_p"
     elif declarations.is_same( declarations.wchar_t(), no_ptr ) and self.treat_char_ptr_as_binary_data == False:
         return "ctypes.c_wchar_p"
     elif declarations.is_same( declarations.void_t(), no_ptr ):
         return "ctypes.c_void_p"
     else:
         base_visitor = self.create_converter( self.user_type.base )
         internal_type_str = declarations.apply_visitor( base_visitor, base_visitor.user_type )
         if declarations.is_calldef_pointer( self.user_type ):
             return internal_type_str
         else:
             return "ctypes.POINTER( %s )" % internal_type_str

    def visit_class(self ):
        if self.curr_decl.indexing_suite:
            self.__types_db.update_containers( self.curr_decl )
            return #it will be exposed later, using other code creators
        self.__dependencies_manager.add_exported( self.curr_decl )
        cls_decl = self.curr_decl
        cls_parent_cc = self.curr_code_creator
        exportable_members = self.curr_decl.get_exportable_members(sort_algorithms.sort)

        wrapper = None
        cls_cc = None
        if cls_decl.introduces_new_scope:
            cls_cc = code_creators.class_t( class_inst=self.curr_decl )
        else:
            cls_cc = self.curr_code_creator

        if self.curr_decl.is_wrapper_needed():
            wrapper = code_creators.class_wrapper_t( declaration=self.curr_decl
                                                     , class_creator=cls_cc )
            cls_cc.wrapper = wrapper
            cls_cc.associated_decl_creators.append( wrapper )
            #insert wrapper before module body
            if isinstance( self.curr_decl.parent, declarations.class_t ):
                #we deal with internal class
                self.curr_code_creator.wrapper.adopt_creator( wrapper )
            else:
                self.__extmodule.adopt_declaration_creator( wrapper )

            #next constructors are not present in code, but compiler generated
            #Boost.Python requiers them to be declared in the wrapper class
            noncopyable_vars = self.curr_decl.find_noncopyable_vars()

            copy_constr = self.curr_decl.find_copy_constructor()
            if not self.curr_decl.noncopyable and copy_constr and copy_constr.is_artificial:
                cccc = code_creators.copy_constructor_wrapper_t( constructor=copy_constr)
                wrapper.adopt_creator( cccc )

            trivial_constr = self.curr_decl.find_trivial_constructor()
            if trivial_constr and trivial_constr.is_artificial and not noncopyable_vars:
                tcons = code_creators.null_constructor_wrapper_t( constructor=trivial_constr )
                wrapper.adopt_creator( tcons )

        exposed = self.expose_overloaded_mem_fun_using_macro( cls_decl, cls_cc )

        if cls_decl.introduces_new_scope:
            cls_parent_cc.adopt_creator( cls_cc )
        self.curr_code_creator = cls_cc

        if cls_decl.expose_this:
            cls_cc.adopt_creator( code_creators.expose_this_t( cls_decl ) )

        if cls_decl.expose_sizeof:
            cls_cc.adopt_creator( code_creators.expose_sizeof_t( cls_decl ) )

        for decl in exportable_members:
            if decl in exposed:
                continue
            self.curr_decl = decl
            declarations.apply_visitor( self, decl )

        for redefined_func in cls_decl.redefined_funcs():
            if isinstance( redefined_func, declarations.operator_t ):
                continue
            self.curr_decl = redefined_func
            declarations.apply_visitor( self, redefined_func )

        #all static_methods_t should be moved to the end
        #better approach is to move them after last def of relevant function
        static_methods = [creator for creator in cls_cc.creators if isinstance( creator, code_creators.static_method_t )]
        for static_method in static_methods:
            cls_cc.remove_creator( static_method )
            cls_cc.adopt_creator( static_method )

        if cls_decl.exception_translation_code:
            translator = code_creators.exception_translator_t( cls_decl )
            self.__extmodule.adopt_declaration_creator( translator )
            cls_cc.associated_decl_creators.append( translator )
            translator_register \
                = code_creators.exception_translator_register_t( cls_decl, translator )
            cls_cc.adopt_creator( translator_register )

        for property_def in cls_decl.properties:
            cls_cc.adopt_creator( code_creators.property_t(property_def) )

        if wrapper and cls_decl.destructor_code:
            destructor = code_creators.destructor_wrapper_t( class_=cls_decl )
            wrapper.adopt_creator( destructor )

        for fc in cls_decl.fake_constructors:
            if self.__fc_manager.should_generate_code( fc ):
                self.__dependencies_manager.add_exported( fc )
                cls_cc.adopt_creator( code_creators.make_constructor_t( fc ) )

        self.curr_decl = cls_decl
        self.curr_code_creator = cls_parent_cc

 def visit_const( self ):
     base_visitor = self.create_converter( self.user_type.base )
     return declarations.apply_visitor( base_visitor, base_visitor.user_type )

def as_ctype( type_, treat_char_ptr_as_binary_data=False):
    v = type_converter_t( type_, treat_char_ptr_as_binary_data )
    return declarations.apply_visitor( v, type_ )

    def visit_class(self ):
        self.__dependencies_manager.add_exported( self.curr_decl )
        cls_decl = self.curr_decl
        cls_parent_cc = self.curr_code_creator
        exportable_members = self.curr_decl.get_exportable_members(sort_algorithms.sort)

        wrapper = None
        cls_cc = code_creators.class_t( class_inst=self.curr_decl )

        if self.curr_decl.is_wrapper_needed():
            wrapper = code_creators.class_wrapper_t( declaration=self.curr_decl
                                                     , class_creator=cls_cc )
            cls_cc.wrapper = wrapper
            cls_cc.associated_decl_creators.append( wrapper )
            #insert wrapper before module body
            if isinstance( self.curr_decl.parent, declarations.class_t ):
                #we deal with internal class
                self.curr_code_creator.wrapper.adopt_creator( wrapper )
            else:
                self.__extmodule.adopt_declaration_creator( wrapper )
            #next constructors are not present in code, but compiler generated
            #Boost.Python requiers them to be declared in the wrapper class
            if '0.9' in self.curr_decl.compiler:
                copy_constr = self.curr_decl.find_copy_constructor()
                add_to_wrapper = False
                if declarations.has_copy_constructor( self.curr_decl ):
                    #find out whether user or compiler defined it
                    if self.curr_decl.noncopyable:
                        add_to_wrapper = False
                    elif not copy_constr:
                        add_to_wrapper = True #compiler defined will not be exposed manually later
                    elif copy_constr.is_artificial:
                        add_to_wrapper = True #compiler defined will not be exposed manually later
                if add_to_wrapper:
                    cccc = code_creators.copy_constructor_wrapper_t( class_=self.curr_decl)
                    wrapper.adopt_creator( cccc )
                trivial_constr = self.curr_decl.find_trivial_constructor()
                add_to_wrapper = False
                if declarations.has_trivial_constructor( self.curr_decl ):
                    if not trivial_constr:
                        add_to_wrapper = True
                    elif trivial_constr.is_artificial:
                        add_to_wrapper = True
                if add_to_wrapper:
                    tcons = code_creators.null_constructor_wrapper_t( class_=self.curr_decl )
                    wrapper.adopt_creator( tcons )
            else:
                if declarations.has_copy_constructor( self.curr_decl ):
                    copy_constr = self.curr_decl.find_copy_constructor()
                    if not self.curr_decl.noncopyable and copy_constr.is_artificial:
                        cccc = code_creators.copy_constructor_wrapper_t( class_=self.curr_decl)
                        wrapper.adopt_creator( cccc )
                    null_constr = self.curr_decl.find_trivial_constructor()
                    if null_constr and null_constr.is_artificial:
                        #this constructor is not going to be exposed
                        tcons = code_creators.null_constructor_wrapper_t( class_=self.curr_decl )
                        wrapper.adopt_creator( tcons )

        exposed = self.expose_overloaded_mem_fun_using_macro( cls_decl, cls_cc )

        cls_parent_cc.adopt_creator( cls_cc )
        self.curr_code_creator = cls_cc
        for decl in exportable_members:
            if decl in exposed:
                continue
            self.curr_decl = decl
            declarations.apply_visitor( self, decl )

        for redefined_func in cls_decl.redefined_funcs():
            if isinstance( redefined_func, declarations.operator_t ):
                continue
            self.curr_decl = redefined_func
            declarations.apply_visitor( self, redefined_func )

        #all static_methods_t should be moved to the end
        #better approach is to move them after last def of relevant function
        static_methods = filter( lambda creator: isinstance( creator, code_creators.static_method_t )
                                 , cls_cc.creators )
        for static_method in static_methods:
            cls_cc.remove_creator( static_method )
            cls_cc.adopt_creator( static_method )

        if cls_decl.exception_translation_code:
            translator = code_creators.exception_translator_t( cls_decl )
            self.__extmodule.adopt_declaration_creator( translator )
            cls_cc.associated_decl_creators.append( translator )
            translator_register \
                = code_creators.exception_translator_register_t( cls_decl, translator )
            cls_cc.adopt_creator( translator_register )

        for property_def in cls_decl.properties:
            cls_cc.adopt_creator( code_creators.property_t(property_def) )

        self.curr_decl = cls_decl
        self.curr_code_creator = cls_parent_cc