Things to unfork.

Source/WebCore/bindings/dart/gyp/scripts/CodeGeneratorDart.pm

Index: Source/WebCore/bindings/dart/gyp/scripts/CodeGeneratorDart.pm
diff --git a/Source/WebCore/bindings/dart/gyp/scripts/CodeGeneratorDart.pm b/Source/WebCore/bindings/dart/gyp/scripts/CodeGeneratorDart.pm
deleted file mode 100644
index ccf7cef64b2008fcdf7e8ba7c2d9ff141ad47c0a..0000000000000000000000000000000000000000
--- a/Source/WebCore/bindings/dart/gyp/scripts/CodeGeneratorDart.pm
+++ /dev/null
@@ -1,1696 +0,0 @@
-# Copyright (C) 2005, 2006 Nikolas Zimmermann <zimmermann@kde.org>
-# Copyright (C) 2006 Anders Carlsson <andersca@mac.com>
-# Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
-# Copyright (C) 2006 Alexey Proskuryakov <ap@webkit.org>
-# Copyright (C) 2006 Apple Computer, Inc.
-# Copyright (C) 2007, 2008, 2009 Google Inc.
-# Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au>
-# Copyright (C) Research In Motion Limited 2010. All rights reserved.
-# Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
-#
-# This library is free software; you can redistribute it and/or
-# modify it under the terms of the GNU Library General Public
-# License as published by the Free Software Foundation; either
-# version 2 of the License, or (at your option) any later version.
-#
-# This library is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-# Library General Public License for more details.
-#
-# You should have received a copy of the GNU Library General Public License
-# along with this library; see the file COPYING.LIB.  If not, write to
-# the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-# Boston, MA 02111-1307, USA.
-#
-
-package CodeGeneratorDart;
-
-use Class::Struct;
-
-my $outputDir = "";
-my $outputHeadersDir = "";
-
-my @headerContent = ();
-my %headerIncludes = ();
-
-my @allParents = ();
-
-my @customCallbackDeclarations = ();
-my @implContentHeader = ();
-my @implFixedHeader = ();
-my @implContent = ();
-my %implIncludes = ();
-my @dartNatives = ();
-
-my @dartInterfaceContent = ();
-my @dartImplContent = ();
-
-# Default .h template
-my $headerTemplate = << "EOF";
-/*
-    This file is part of the WebKit open source project.
-    This file has been generated by generate-bindings.pl. DO NOT MODIFY!
-
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Library General Public
-    License as published by the Free Software Foundation; either
-    version 2 of the License, or (at your option) any later version.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Library General Public License for more details.
-
-    You should have received a copy of the GNU Library General Public License
-    along with this library; see the file COPYING.LIB.  If not, write to
-    the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-    Boston, MA 02111-1307, USA.
-*/
-EOF
-
-struct(NativeBindingDescriptor => {
-    cppCallbackName => '$',
-    nativeId => '$',
-    argumentCount => '$',
-});
-
-struct(IDLTypeInfoStruct => {
-    additionalInterfaces => '@',
-    superClass => '$',
-    auxilaryMethods => '@',
-});
-
-# Default constructor
-sub new
-{
-    my $object = shift;
-
-    $codeGenerator = shift;
-    $outputDir = shift;
-    $outputHeadersDir = shift;
-
-    my $reference = { };
-    bless($reference, $object);
-    return $reference;
-}
-
-sub finish
-{
-    my ($object,) = @_;
-
-    # Commit changes!
-    $object->WriteData();
-}
-
-sub GenerateModule
-{
-    my ($object, $dataNode) = @_;
-}
-
-sub GenerateInterface
-{
-    my ($object, $dataNode, $defines) = @_;
-
-    # Add parent classes (for multiple-inheritance) fields as needed.
-    @allParents = ();
-    $codeGenerator->AddMethodsConstantsAndAttributesFromParentClasses($dataNode, \@allParents, 0);
-    # Prepare internal structures.
-    $codeGenerator->LinkOverloadedFunctions($dataNode);
-
-    # Start actual generation
-    if ($dataNode->extendedAttributes->{Callback}) {
-        $object->GenerateCallbackDartInterface($dataNode);
-        $object->GenerateCallbackHeader($dataNode);
-        $object->GenerateCallbackImplementation($dataNode);
-    } else {
-        $object->GenerateSource($dataNode);
-        $object->GenerateHeader($dataNode);
-    }
-
-    my $name = $dataNode->name;
-
-    # Open files for writing
-    my $headerFileName = "$outputHeadersDir/Dart${name}.h";
-    my $implFileName = "$outputDir/Dart${name}.cpp";
-    my $dartInterfaceFileName = "$outputHeadersDir/${name}.dart";
-    my $dartImplFileName = "$outputHeadersDir/${name}Implementation.dart";
-
-    open($IMPL, ">$implFileName") || die "Couldn't open file $implFileName";
-    open($HEADER, ">$headerFileName") || die "Couldn't open file $headerFileName";
-    open($DART_INTERFACE, ">$dartInterfaceFileName") || die "Couldn't open file $dartInterfaceFileName";
-    open($DART_IMPL, ">$dartImplFileName") || die "Couldn't open file $dartImplFileName";
-}
-
-# If the node has a [Conditional=XXX] attribute, returns an "ENABLE(XXX)" string for use in an #if.
-# FIXME: common with CodeGeneratorV8
-sub GenerateConditionalStringForAttributes
-{
-    my ($attributes,) = @_;
-
-    my $conditional = $attributes->{Conditional};
-    if ($conditional) {
-        if ($conditional =~ /&/) {
-            return "ENABLE(" . join(") && ENABLE(", split(/&/, $conditional)) . ")";
-        } elsif ($conditional =~ /\|/) {
-            return "ENABLE(" . join(") || ENABLE(", split(/\|/, $conditional)) . ")";
-        } else {
-            return "ENABLE(" . $conditional . ")";
-        }
-    } else {
-        return "";
-    }
-}
-
-sub GenerateConditionalString
-{
-    my ($node,) = @_;
-    return GenerateConditionalStringForAttributes($node->extendedAttributes);
-}
-
-sub GenerateCustomCallbackDeclaration
-{
-    my ($callbackName) = @_;
-    return "void $callbackName(Dart_NativeArguments);";
-}
-
-sub ClassName
-{
-    my ($interfaceName,) = @_;
-    return "Dart$interfaceName";
-}
-
-sub HasOverloads
-{
-    my ($function,) = @_;
-    return 1 if @{$function->{overloads}} > 1;
-}
-
-sub MaxOverloadParameterCount
-{
-    my ($function,) = @_;
-
-    my $maxParameterCount = 0;
-    foreach my $overload (@{$function->{overloads}}) {
-        my $parameterCount = @{$overload->parameters};
-        $maxParameterCount = $maxParameterCount > $parameterCount ? $maxParameterCount : $parameterCount;
-    }
-    return $maxParameterCount;
-}
-
-sub HasOptionalParameters
-{
-    my ($function) = @_;
-
-    # FIXME: useCapture was marked as optional upstream, however native
-    # implementation still requires all three parameters. JavaScript bindings
-    # have custom generation for addEventListener and removeEventListener.
-    return 0 if $function->signature->name eq "addEventListener" || $function->signature->name eq "removeEventListener";
-
-    foreach my $parameter (@{$function->parameters}) {
-        return 1 if IsParameterOptionalInWebKit($parameter);
-    }
-}
-
-sub HasCustomConstructor
-{
-    my ($dataNode) = @_;
-
-    # FIXME: switch to using CanBeConstructed attribute.
-    return 1 if $dataNode->name eq "FileReader";
-    return 1 if $dataNode->name eq "XMLHttpRequest";
-    return 1 if $dataNode->name eq "WebKitCSSMatrix";
-    return 1 if $dataNode->name eq "WebKitPoint";
-
-    return 0;
-}
-
-sub IsParameterOptionalInWebKit
-{
-    my ($parameter) = @_;
-
-    # Optional callbacks are not optional parameters in native implementations, they always have a default value (0).
-    my $optional = $parameter->extendedAttributes->{Optional};
-    return $optional && $optional ne "CallWithDefaultValue" && !$parameter->extendedAttributes->{Callback};
-}
-
-my %renames = (
-  "IDBCursor" => {
-    "continue" => "continueFunction",
-  },
-  "IDBIndex" => {
-    "get" => "getObject",
-  },
-  "IDBObjectStore" => {
-    "get" => "getObject",
-  },
-  "Int8Array" => {
-    "set" => "setElements",
-  },
-  "Int16Array" => {
-    "set" => "setElements",
-  },
-  "Int32Array" => {
-    "set" => "setElements",
-  },
-  "Uint8Array" => {
-    "set" => "setElements",
-  },
-  "Uint16Array" => {
-    "set" => "setElements",
-  },
-  "Uint32Array" => {
-    "set" => "setElements",
-  },
-  "Float32Array" => {
-    "set" => "setElements",
-  },
-  "Float64Array" => {
-    "set" => "setElements",
-  },
-  "SVGFEMorphologyElement" => {
-    "operator" => "operatorValue",
-  },
-  "SVGFECompositeElement" => {
-    "operator" => "operatorValue",
-  },
-  "Console" => {
-    "assert" => "assert_",
-  },
-);
-
-sub DartName
-{
-    my ($interfaceName, $memberName) = @_;
-    return $memberName unless $renames{$interfaceName};
-    my $class = $renames{$interfaceName};
-    return $memberName unless $class->{$memberName};
-    return $class->{$memberName};
-}
-
-# FIXME: eventually those should go away.
-my %classesWithUnsupportedCustomGetters = (
-    "Clipboard" => 1,
-    "Console" => 1,
-    "Coordinates" => 1,
-    "DeviceMotionEvent" => 1,
-    "DeviceOrientationEvent" => 1,
-    "FileReader" => 1,
-    "JavaScriptCallFrame" => 1,
-    "HTMLInputElement" => 1,
-    "HTMLOptionsCollection" => 1,
-    "HTMLOutputElement" => 1,
-    "ScriptProfileNode" => 1,
-    "WebKitAnimation" => 1,
-);
-
-sub IgnoredAttribute
-{
-    my ($interfaceName, $attribute) = @_;
-
-    # FIXME: reconsider if need to be supported in Dart bindings at all.
-    return 1 if $attribute->signature->type =~ /Constructor$/;
-
-    # Attribute event listeners are not supported in Dart.
-    return 1 if $attribute->signature->type eq "EventListener";
-
-    # FIXME: support float[].
-    return 1 if $attribute->signature->type eq "float[]";
-
-    # The only usage is HTMLIFrameElement.contentDocument.
-    return 1 if $attribute->signature->extendedAttributes->{CheckFrameSecurity};
-
-    return 1 if HasCustomGetter($attribute) && exists $classesWithUnsupportedCustomGetters{$interfaceName};
-
-    return 0;
-}
-
-
-sub HasSetter
-{
-    my ($attribute,) = @_;
-
-    return 0 if $attribute->type =~ /^readonly/;
-    # FIXME: Replaceable apparently means that the value can be overwritten by JS and
-    # hence there is no correspondence to this in Dart.
-    return 0 if $attribute->signature->extendedAttributes->{"Replaceable"};
-    return 1;
-}
-
-
-sub IgnoredCallback
-{
-    my ($interfaceName, $function) = @_;
-
-    # FIXME: WebGLContextEvent.initEvent overloads initEvent in base interface Event and adds
-    # another argument.
-    # In the current architecture it's difficult to solve as IDL files are processed one by one.
-    # As this is the only case, I'd suggest to put Custom attribute on WebGLContextEvent.initEvent.
-    return 1 if $interfaceName eq "WebGLContextEvent" && $function->signature->name eq "initEvent";
-
-    # FIXME: implement callbacks with ScriptState.
-    my $callWith = $function->signature->extendedAttributes->{CallWith};
-    return 1 if $callWith and $callWith eq "ScriptState";
-
-    return 0;
-}
-
-# FIXME: Consider adding this to IDL as an attribute.
-my %idlTypeToW3C = (
-  "DOMWindow" => "Window",
-  "DOMCoreException" => "DOMException"
-);
-
-sub HasW3CName
-{
-    my ($idlType,) = @_;
-    return 1 if exists $idlTypeToW3C{$idlType};
-    return 0;
-}
-
-sub IDLTypeToW3C
-{
-    my ($idlType,) = @_;
-    return $idlTypeToW3C{$idlType} if exists $idlTypeToW3C{$idlType};
-    return $idlType;
-}
-
-my %idlTypeToDart = (
-  "any" => "Object",
-  "boolean" => "bool",
-  "custom" => "Object",
-  "object" => "Object",
-  "Array" => "List",
-  "DOMObject" => "Object",
-  "DOMString" => "String",
-  "DOMString[]" => "DOMStringList",
-  "DOMTimeStamp" => "int",
-  "ObjectArray" => "List",
-  "SerializedScriptValue" => "Object",
-  "Date" => "Date",
-  "float" => "num",
-  "short" => "int",
-  "long" => "int",
-  "long long" => "int",
-  "unsigned int" => "int",
-  "unsigned short" => "int",
-  "unsigned long" => "int",
-  "unsigned long long" => "int",
-  "string" => "String",
-  "WebKitFlags" => "num",
-);
-
-my %primitiveDartTypes = (
-    "int" => 1,
-    "String" => 1,
-    "Object" => 1,
-    "Date" => 1,
-    "SerializedScriptValue" => 1,
-);
-
-sub IDLTypeToDart
-{
-    my ($idlType,) = @_;
-    return $idlTypeToDart{$idlType} if exists $idlTypeToDart{$idlType};
-    return $idlType;
-}
-
-# FIXME: pretty much %non_wrapper_types in CodeGeneratorV8.
-my %nonWrapperTypes = (
-    "CompareHow" => 1,
-    "EventListener" => 1,
-    "EventTarget" => 1,
-    "MediaQueryListListener" => 1,
-    "OptionsObject" => 1,
-    "VoidCallback" => 1,
-    "WebKitFlags" => 1,
-);
-
-sub IsIDLTypeWithDartBindings
-{
-    my ($idlType,) = @_;
-
-    return 0 if exists $idlTypeToDart{$idlType};
-    return 0 if exists $primitiveDartTypes{$idlType};
-    return 0 if !IsRefPtrType(IDLTypeToDart($idlType));
-    return 0 if exists $nonWrapperTypes{$idlType};
-
-    return 1;
-}
-
-sub ParameterAdapterType
-{
-    my ($idlType,) = @_;
-
-    my $webkitParameterType = IDLTypeToWebkit($idlType);
-
-    my $suffix = "";
-    if (IsIDLTypeWithDartBindings($idlType)) {
-        my $bindingsClass = ClassName($idlType);
-        $implIncludes{"$bindingsClass.h"} = 1;
-        $suffix = ", $bindingsClass";
-    }
-
-    return "ParameterAdapter< $webkitParameterType$suffix >";
-}
-
-# FIXME: common with CodeGeneratorV8
-sub GetNativeTypeForConversions
-{
-    my ($type,) = @_;
-    $type = $codeGenerator->GetSVGTypeNeedingTearOff($type) if $codeGenerator->IsSVGTypeNeedingTearOff($type);
-    return $type;
-}
-
-
-sub AddHeaderForIDLType
-{
-    my ($idlType, $includes) = @_;
-
-    $idlType =~ s/Abs|Rel// if $idlType =~ /SVGPathSeg/;
-
-    return if $codeGenerator->IsPrimitiveType($idlType);
-
-    return if exists $primitiveDartTypes{IDLTypeToDart($idlType)};
-
-    return if $codeGenerator->AvoidInclusionOfType($idlType);
-
-    return if $idlType eq "CompareHow";
-
-    $includes->{"$idlType.h"} = 1;
-    $includes->{"SVGPropertyTearOff.h"} = 1 if $codeGenerator->IsSVGTypeNeedingTearOff($idlType);
-}
-
-# FIXME: common with CodeGeneratorV8
-sub AddHeaderClassIncludes
-{
-    my ($idlType,) = @_;
-
-    AddHeaderForIDLType($idlType, \%headerIncludes);
-
-    $headerIncludes{"DartDOMWrapper.h"} = 1;
-}
-
-sub GenerateIncludes
-{
-    return map { "#include " . (/wtf|dart_api\.h/ ? "<$_>" : "\"$_\"") . "\n"; } sort(@_);
-}
-
-my %withCustomConverters = (
-    "DOMWindow" => 1,
-    "Element" => 1,
-    "HTMLElement" => 1,
-    "SVGElement" => 1,
-);
-
-sub RequiresCustomToDartConverter
-{
-    my ($dataNode,) = @_;
-
-    return 1 if $dataNode->extendedAttributes->{CustomToJS};
-    return 1 if $dataNode->extendedAttributes->{PureInterface};
-    return exists $withCustomConverters{$dataNode->name};
-}
-
-sub GenerateHeader
-{
-    my ($object, $dataNode) = @_;
-
-    my $interfaceName = $dataNode->name;
-    my $className = ClassName($interfaceName);
-    my $webkitClassName = GetNativeTypeForConversions($interfaceName);
-
-    my $conditionalString = GenerateConditionalString($dataNode);
-
-    my $toDartValue = "";
-    if (!RequiresCustomToDartConverter($dataNode)) {
-        $toDartValue = <<END;
-inline Dart_Handle toDartValue($webkitClassName* value)
-{
-    return DartDOMWrapper::toDart<$className>(value);
-}
-END
-    } else {
-        $toDartValue = <<END;
-Dart_Handle toDartValue($webkitClassName*);
-END
-    }
-
-    $toDartValue .= <<END;
-inline Dart_Handle toDartValue(PassRefPtr< $webkitClassName > value)
-{
-    return toDartValue(value.get());
-}
-END
-
-    my $customCallbackDeclarations = join("\n\n", @customCallbackDeclarations);
-
-    push(@headerContent, $headerTemplate);
-
-    push(@headerContent, "\n#if ${conditionalString}\n") if $conditionalString;
-    push(@headerContent, <<END);
-
-#ifndef ${className}_h
-#define ${className}_h
-
-END
-
-    AddHeaderClassIncludes($interfaceName);
-
-    $headerIncludes{"dart_api.h"} = 1;
-    push(@headerContent, GenerateIncludes(keys(%headerIncludes)));
-
-    push(@headerContent, <<END);
-
-namespace WebCore {
-
-struct $className {
-    static const char* const dartImplementationClassName;
-    typedef $webkitClassName NativeType;
-
-    static PassRefPtr<NativeType> toNative(Dart_Handle handle, Dart_Handle& exception)
-    {
-        return DartDOMWrapper::unwrapDartWrapper<$className>(handle, exception);
-    }
-
-    static Dart_NativeFunction resolver(Dart_Handle name, int argumentCount);
-};
-
-$toDartValue
-namespace Dart${interfaceName}Internal {
-
-$customCallbackDeclarations
-
-}
-
-}
-
-#endif // ${className}_h
-END
-
-    push(@headerContent, "\n#endif // ${conditionalString}\n") if $conditionalString;
-}
-
-sub HasCustomGetter
-{
-    my ($attribute,) = @_;
-    my $extendedAttributes = $attribute->signature->extendedAttributes;
-    return $extendedAttributes->{"CustomGetter"} || $extendedAttributes->{"Custom"};
-}
-
-sub HasCustomSetter
-{
-    my ($attribute,) = @_;
-    my $extendedAttributes = $attribute->signature->extendedAttributes;
-    return $extendedAttributes->{"CustomSetter"} || $extendedAttributes->{"Custom"} || $extendedAttributes->{"V8CustomSetter"};
-}
-
-sub WithTearOffNotList
-{
-    my ($interfaceName) = @_;
-
-    return ($codeGenerator->IsSVGTypeNeedingTearOff($interfaceName) and (not ($interfaceName =~ /List$/)));
-}
-
-sub PrepareInvocation
-{
-    my ($receiver, $interfaceName, $invocationPrefix, $invocationParameters) = @_;
-
-    my $invocationPostfix;
-    $receiver .= "->";
-    if ($interfaceName eq "SVGNumber") {
-        $receiver .= "propertyReference()";
-        if ($invocationPrefix =~ /^setValue/) {
-            $invocationPrefix = " = ";
-        } else {
-            $invocationPrefix = "";
-        }
-        $invocationPostfix = "";
-    } else {
-        $receiver .= "propertyReference()." if WithTearOffNotList($interfaceName);
-        $invocationPostfix = ")";
-    }
-    return "$receiver$invocationPrefix$invocationParameters$invocationPostfix";
-}
-
-my %svgPrimitiveTypes = (
-        "SVGAngle" => 1,
-        "SVGLength" => 1,
-        "SVGMatrix" => 1,
-        "SVGNumber" => 1,
-        "SVGPoint" => 1,
-        "SVGRect" => 1,
-        "SVGTransform" => 1);
-
-sub ProcessInvocationResult
-{
-    my ($invocation, $interfaceName, $returnType) = @_;
-    my $svgNativeReturnType = $codeGenerator->GetSVGTypeNeedingTearOff($returnType);
-
-    return $invocation if (not $svgNativeReturnType);
-
-    return "static_cast<${svgNativeReturnType}*>(${invocation})" if ($interfaceName =~ /^SVGAnimated/);
-
-    return "${svgNativeReturnType}::create(receiver, ${invocation})" if ($returnType eq "SVGStringList");
-
-    return "static_cast<${svgNativeReturnType}*>(${invocation}.get())" if ($interfaceName =~ /List$/);
-
-    if (exists $svgPrimitiveTypes{$returnType}) {
-        return "${svgNativeReturnType}::create(${invocation})";
-    } else {
-        return "static_cast<${svgNativeReturnType}*>(${invocation})";
-    }
-}
-
-sub GenerateGenericBindingsFunction
-{
-    my ($name, $interfaceName, $functionName, $constantParameters, $parameters, $returnType, $raisesExceptions, $attributes, $isSetter) = @_;
-
-    my $webkitClassName = GetNativeTypeForConversions($interfaceName);
-    my $invocationPrefix = "$functionName(";
-
-    my $exceptionManagementPrologue = "";
-    my $exceptionManagementEpilogue = "";
-    if (@{$parameters} || $raisesExceptions || $attributes->{CustomArgumentHandling}) {
-        $exceptionManagementPrologue = <<END;
-    Dart_Handle exception;
-END
-        $exceptionManagementEpilogue = <<END;
-
-fail:
-    Dart_ThrowException(exception);
-    ASSERT_NOT_REACHED();
-END
-    }
-
-    my @defineInvocationParameters = ();
-    my @invocationParameters = @{$constantParameters};
-
-    my $callWith = $attributes->{CallWith};
-    if ($callWith) {
-        # Generate code for "CallWith" parameter.
-        if ($callWith eq "ScriptExecutionContext") {
-            push(@defineInvocationParameters, <<END);
-        ScriptExecutionContext* context = DartUtilities::scriptExecutionContext();
-        if (!context)
-            return;
-END
-            push(@invocationParameters, "context");
-        }
-    }
-
-    # Generate code for parameters conversion.
-    my $parameterCount = @$parameters;
-    foreach my $parameterIndex (0..$parameterCount - 1) {
-        my $parameter = @$parameters[$parameterIndex];
-        my $parameterType = $parameter->type;
-        $parameterType = "DOMStringList" if $parameterType eq "DOMString[]";
-        AddHeaderForIDLType($parameterType, \%implIncludes);
-        my $name = $parameter->name;
-        my $parameterAdapterType = ParameterAdapterType($parameterType);
-        my $dartArgumentIndex = $parameterIndex + 1; # 0 is for the receiver.
-        my @adapterParameters = ("Dart_GetNativeArgument(args, $dartArgumentIndex)");
-        my $adapterParameters = join(", ", @adapterParameters);
-        push(@defineInvocationParameters, <<END);
-        const $parameterAdapterType $name($adapterParameters);
-        if (!$name.conversionSuccessful()) {
-            exception = $name.exception();
-            goto fail;
-        }
-END
-    }
-    @invocationParameters = (@invocationParameters, map { $_->name; } @{$parameters});
-
-    if ($attributes->{CustomArgumentHandling}) {
-        $implIncludes{"ScriptArguments.h"} = 1;
-        $implIncludes{"ScriptCallStack.h"} = 1;
-        $implIncludes{"V8Proxy.h"} = 1;
-        $implIncludes{"v8.h"} = 1;
-        my $customArgument = $parameterCount + 1;
-        push(@defineInvocationParameters, <<END);
-        v8::HandleScope handleScope;
-        v8::Context::Scope scope(V8Proxy::mainWorldContext(DartUtilities::domWindowForCurrentIsolate()->frame()));
-
-        Dart_Handle customArgument = Dart_GetNativeArgument(args, $customArgument);
-        RefPtr<ScriptArguments> scriptArguments(DartUtilities::createScriptArguments(customArgument, exception));
-        if (!scriptArguments)
-            goto fail;
-
-        RefPtr<ScriptCallStack> scriptCallStack(DartUtilities::createScriptCallStack());
-        if (!scriptCallStack->size())
-            return;
-END
-        push(@invocationParameters, "scriptArguments", "scriptCallStack");
-    }
-
-    if ($attributes->{NeedsUserGestureCheck}) {
-        push(@invocationParameters,  "DartUtilities::processingUserGesture()");
-    }
-
-    if ($raisesExceptions) {
-        push(@invocationParameters, "ec");
-    }
-
-    my $defineInvocationParameters = join "", @defineInvocationParameters;
-    my $invocationParameters = join ", ",  @invocationParameters;
-    my $invocation = PrepareInvocation("receiver", $interfaceName, $invocationPrefix, $invocationParameters);
-    # Generate code for setting return value.
-    my $invocationAndReturn = <<END;
-        $invocation;
-END
-    if ($returnType ne "void") {
-        $invocation = ProcessInvocationResult($invocation, $interfaceName, $returnType);
-        my $dartType = IDLTypeToDart($returnType);
-        if (!$codeGenerator->IsPrimitiveType($returnType) && !exists $primitiveDartTypes{$dartType}) {
-            $implIncludes{"@{[ClassName($dartType)]}.h"} = 1;
-        }
-        $invocation = "static_pointer_cast<SVGAnimatedEnumeration>($invocation)" if $returnType eq "SVGAnimatedEnumeration";
-        # FIXME: this is too simplistic for long return types, reconsider.
-        $invocation = "static_cast<int64_t>($invocation)" if $dartType eq "int";
-        # There is GC3Dboolean which is not a bool, but unsigned char for OpenGL compatibility.
-        $invocation = "static_cast<bool>($invocation)" if $dartType eq "bool";
-        $conversion = ($codeGenerator->IsStringType($returnType) and defined
-          $attributes->{ConvertNullStringTo}) ? ", ConvertDefaultToNull" : "";
-        $invocationAndReturn = <<END;
-        Dart_Handle returnValue = toDartValue($invocation$conversion);
-        if (returnValue)
-            Dart_SetReturnValue(args, returnValue);
-END
-    }
-
-    my $webkitInvocation = $invocationAndReturn;
-    if ($raisesExceptions) {
-        $implIncludes{"ExceptionCode.h"} = 1;
-        $webkitInvocation = <<END;
-        ExceptionCode ec = 0;
-        $invocationAndReturn;
-        if (UNLIKELY(ec)) {
-            exception = DartDOMWrapper::exceptionCodeToDartException(ec);
-            goto fail;
-        }
-END
-    }
-
-    my $conditionalString = GenerateConditionalStringForAttributes($attributes);
-    if ($conditionalString) {
-        push(@implContent, <<END);
-#if $conditionalString
-END
-    }
-
-    push(@implContent, <<END);
-static void $name(Dart_NativeArguments args)
-{
-    DartApiScope dartApiScope;
-$exceptionManagementPrologue    {
-        $webkitClassName* receiver = DartDOMWrapper::receiver< $webkitClassName >(args);
-$defineInvocationParameters
-$webkitInvocation        return;
-    }
-$exceptionManagementEpilogue}
-
-END
-
-    if ($conditionalString) {
-        push(@implContent, <<END);
-#else
-static void $name(Dart_NativeArguments args)
-{
-    DartApiScope dartApiScope;
-    Dart_ThrowException(DartUtilities::conditionalFunctionalityException());
-}
-#endif
-
-END
-    }
-}
-
-# FIXME: copied from CodeGeneratorV8.pm
-sub IsRefPtrType
-{
-    my ($type,) = @_;
-
-    return 0 if $type eq "boolean";
-    return 0 if $type eq "float";
-    return 0 if $type eq "int";
-    return 0 if $type eq "Date";
-    return 0 if $type eq "DOMString";
-    return 0 if $type eq "double";
-    return 0 if $type eq "short";
-    return 0 if $type eq "long";
-    return 0 if $type eq "unsigned";
-    return 0 if $type eq "unsigned long";
-    return 0 if $type eq "unsigned short";
-
-    return 1;
-}
-
-# FIXME: partially copied from GetNativeType of CodeGeneratorV8.pm
-sub IDLTypeToWebkit
-{
-    my ($type, $isParameter) = @_;
-
-    my $svgNativeType = $codeGenerator->GetSVGTypeNeedingTearOff($type);
-    if ($svgNativeType) {
-        if ($svgNativeType =~ /List$/) {
-            return "${svgNativeType}*";
-        } else {
-            return "RefPtr<${svgNativeType} >";
-        }
-    }
-
-    if ($type eq "float" or $type eq "double") {
-        return $type;
-    }
-
-    return ($isParameter ? "const String&" : "String") if ($type eq "DOMString" or $type eq "DOMUserData");
-    return "int" if $type eq "int";
-    return "int" if $type eq "short" or $type eq "unsigned short";
-    return "unsigned" if $type eq "unsigned long";
-    return "int" if $type eq "long";
-    return "long long" if $type eq "long long";
-    return "unsigned long long" if $type eq "unsigned long long";
-    return "bool" if $type eq "boolean";
-    return "Range::CompareHow" if $type eq "CompareHow";
-    return "DOMTimeStamp" if $type eq "DOMTimeStamp";
-    return "unsigned" if $type eq "unsigned int";
-    # FIXME: EventTarget are evils!
-    # return "Node*" if $type eq "EventTarget" and $isParameter;
-    return "double" if $type eq "Date";
-    return "ScriptValue" if $type eq "DOMObject";
-    return "OptionsObject" if $type eq "OptionsObject";
-
-    # temporary hack
-    return "RefPtr<NodeFilter>" if $type eq "NodeFilter";
-
-    return "RefPtr<SerializedScriptValue>" if $type eq "SerializedScriptValue";
-
-    return "RefPtr<IDBKey>" if $type eq "IDBKey";
-
-    # necessary as resolvers could be constructed on fly.
-    return "RefPtr<XPathNSResolver>" if $type eq "XPathNSResolver";
-
-    return ($isParameter ? "${type}*" : "RefPtr<${type}>") if IsRefPtrType($type);
-
-    return "RefPtr<DOMStringList>" if $type eq "DOMStringList";
-
-    return "RefPtr<MediaQueryListListener>" if $type eq "MediaQueryListListener";
-
-    # Default, assume native type is a pointer with same type name as idl type
-    return "${type}*";
-}
-
-sub GenerateResolver
-{
-    my ($interfaceName,) = @_;
-
-    my $className = ClassName($interfaceName);
-
-    push(@implContent, <<END);
-
-Dart_NativeFunction ${className}::resolver(Dart_Handle name, int argumentCount)
-{
-    String str = DartUtilities::dartStringToString(name);
-
-END
-
-    foreach my $nativeDescriptor (@dartNatives) {
-      my $cppCallbackName = $nativeDescriptor->cppCallbackName;
-      my $nativeId = $nativeDescriptor->nativeId;
-      my $argumentCount = $nativeDescriptor->argumentCount;
-      push(@implContent, <<END);
-    if ($argumentCount == argumentCount && str == "$nativeId")
-        return Dart${interfaceName}Internal::$cppCallbackName;
-END
-    }
-
-    push(@implContent, <<END);
-    return 0;
-}
-
-END
-}
-
-sub GenerateDartImplementationClassname
-{
-    my ($interfaceName,) = @_;
-
-    my $className = ClassName($interfaceName);
-
-    push(@implContent, <<END);
-
-const char* const ${className}::dartImplementationClassName = "${interfaceName}Implementation";
-END
-}
-
-sub GenerateImplementationPrologue
-{
-    my ($dataNode) = @_;
-
-    my $interfaceName = $dataNode->name;
-    my $className = ClassName($interfaceName);
-    my $internalNamespaceName = "Dart${interfaceName}Internal";
-
-    my $conditionalString = GenerateConditionalString($dataNode);
-
-    push(@implContentHeader, $headerTemplate);
-
-    push(@implContentHeader, <<END);
-
-#include "config.h"
-#include "$className.h"
-
-END
-
-    push(@implContentHeader, "#if $conditionalString\n\n") if $conditionalString;
-
-    $implIncludes{"DartBindingsCommonIncludes.h"} = 1;
-
-    push(@implContent, <<END);
-namespace WebCore {
-
-namespace $internalNamespaceName {
-END
-}
-
-sub GenerateImplementationEpilogue
-{
-    my ($dataNode) = @_;
-
-    my $interfaceName = $dataNode->name;
-    my $className = ClassName($interfaceName);
-    my $internalNamespaceName = "Dart${interfaceName}Internal";
-
-    my $conditionalString = GenerateConditionalString($dataNode);
-
-    push(@implContent, "}\n");
-
-    GenerateResolver($interfaceName);
-    GenerateDartImplementationClassname($interfaceName);
-
-    push(@implContent, <<END);
-}
-END
-
-    push(@implContent, "\n#endif // $conditionalString\n") if $conditionalString;
-
-    # We've already added the header for this file in implFixedHeader, so remove
-    # it from implIncludes to ensure we don't #include it twice.
-    delete $implIncludes{"$className.h"};
-}
-
-sub GenerateCallbackDartInterface
-{
-    my ($object, $dataNode) = @_;
-    my $function = $dataNode->functions->[0];
-    my $functionDecl = DartInterfaceMethodDeclaration($interfaceName, $function, $dataNode->name);
-    push(@dartInterfaceContent, $headerTemplate);
-    push(@dartInterfaceContent, <<END);
-typedef $functionDecl;
-END
-}
-
-sub FormatCallbackArgument
-{
-    my ($argument,) = @_;
-    my $webkitType = IDLTypeToWebkit($argument->type, 1);
-    my $name = $argument->name;
-    return "$webkitType $name";
-}
-
-sub GenerateCallbackHeader
-{
-    my ($object, $dataNode) = @_;
-
-    my $interfaceName = $dataNode->name;
-    my $className = ClassName($interfaceName);
-    my $webkitClassName = GetNativeTypeForConversions($interfaceName);
-
-    my $conditionalString = GenerateConditionalString($dataNode);
-
-    push(@headerContent, $headerTemplate);
-
-    push(@headerContent, "\n#if ${conditionalString}\n") if $conditionalString;
-    push(@headerContent, <<END);
-
-#ifndef ${className}_h
-#define ${className}_h
-
-END
-
-    AddHeaderClassIncludes($interfaceName);
-
-    $headerIncludes{"ActiveDOMCallback.h"} = 1;
-    $headerIncludes{"DartCallback.h"} = 1;
-    push(@headerContent, GenerateIncludes(keys(%headerIncludes)));
-
-    my @handleEventMethods = ();
-    foreach my $function (@{$dataNode->functions}) {
-        die "Expect only handleEvent methods" if ($function->signature->type ne "boolean") || ($function->signature->name ne "handleEvent");
-
-        my $arguments = join ", ", map { FormatCallbackArgument($_); } @{$function->parameters};
-        push(@handleEventMethods, "    virtual bool handleEvent($arguments);");
-    }
-    my $methods = join "\n", @handleEventMethods;
-
-    push(@headerContent, <<END);
-
-namespace WebCore {
-
-class ScriptExecutionContext;
-
-class $className : public $interfaceName, public ActiveDOMCallback {
-public:
-    typedef $interfaceName NativeType;
-
-    static PassRefPtr<NativeType> toNative(Dart_Handle object, Dart_Handle& exception)
-    {
-        return adoptRef(new $className(object, exception, DartUtilities::scriptExecutionContext()));
-    }
-
-$methods
-
-private:
-    $className(Dart_Handle object, Dart_Handle& exception, ScriptExecutionContext* context)
-        : ActiveDOMCallback(context)
-        , m_callback(object, exception)
-    {
-    }
-
-    DartCallback m_callback;
-};
-
-}
-
-#endif // ${className}_h
-END
-
-    push(@headerContent, "\n#endif // ${conditionalString}\n") if $conditionalString;
-}
-
-sub GenerateCallbackImplementation
-{
-    my ($object, $dataNode) = @_;
-
-    my $interfaceName = $dataNode->name;
-    my $className = ClassName($interfaceName);
-    my $internalNamespaceName = "Dart${interfaceName}Internal";
-
-    my $conditionalString = GenerateConditionalString($dataNode);
-
-    push(@implContentHeader, $headerTemplate);
-
-    $implIncludes{"DartBindingsCommonIncludes.h"} = 1;
-
-    push(@implContentHeader, <<END);
-
-#include "config.h"
-#include "$className.h"
-
-END
-
-    push(@implContentHeader, "#if $conditionalString\n\n") if $conditionalString;
-
-    my @handleEventMethods = ();
-    foreach my $function (@{$dataNode->functions}) {
-        die "Expect only handleEvent methods" if ($function->signature->type ne "boolean") || ($function->signature->name ne "handleEvent");
-
-        my $arguments = join ", ", map { FormatCallbackArgument($_); } @{$function->parameters};
-        my $parameters = join ", ", map { $_->name; } @{$function->parameters};
-        push(@handleEventMethods, <<END);
-bool ${className}::handleEvent($arguments)
-{
-    return m_callback.handleEvent($parameters);
-}
-END
-    }
-    my $methods = join "\n", @handleEventMethods;
-
-    push(@implContent, <<END);
-namespace WebCore {
-
-$methods
-
-}
-END
-
-    push(@implContent, "\n#endif // $conditionalString\n") if $conditionalString;
-
-    # We've already added the header for this file in implFixedHeader, so remove
-    # it from implIncludes to ensure we don't #include it twice.
-    delete $implIncludes{"$className.h"};
-}
-
-sub DartMethodDeclaration
-{
-    my ($functionName, $parameters, $returnType) = @_;
-
-    $returnType = IDLTypeToDart($codeGenerator->StripModule($returnType));
-    return "$returnType $functionName($parameters)";
-}
-
-sub DartInterfaceMethodDeclaration
-{
-    my ($interfaceName, $function, $name) = @_;
-
-    my $parameters;
-    if (HasOverloads($function)) {
-        my $maxParameterCount = MaxOverloadParameterCount($function);
-        $parameters = DartAnonymousNamedOptionalParameters($maxParameterCount);
-    } else {
-        $parameters = DartParameters($function, $function->parameters, 1);
-    }
-    return DartMethodDeclaration($name || DartName($interfaceName, $function->signature->name), $parameters, $function->signature->type);
-}
-
-sub DartParameters
-{
-    my ($function, $parameters, $useDefaultValues) = @_;
-
-    my @mandatoryParameters = ();
-    my @optionalParameters = ();
-    foreach my $parameter (@{$parameters}) {
-        # FIXME: parameter modifiers.
-        my $type = IDLTypeToDart($parameter->type);
-        my $name = $parameter->name;
-        if ($useDefaultValues && IsParameterOptionalInWebKit($parameter)) {
-            push(@optionalParameters, "$type ${name}");
-        } else {
-            push(@mandatoryParameters, "$type ${name}");
-        }
-    }
-    if ($function->signature->extendedAttributes->{CustomArgumentHandling}) {
-        die "Optional parameters in function with custom argument handling. " if @optionalParameters;
-        push(@mandatoryParameters, "argument");
-    }
-    my $dartParameters = join(", ", @mandatoryParameters);
-    if (@optionalParameters) {
-        $dartParameters .= ", " if $dartParameters;
-        $dartParameters .= "[" . join(", ", @optionalParameters) . "]";
-    }
-    return $dartParameters;
-}
-
-sub DartParameterCount
-{
-    my ($function, $parameters) = @_;
-
-    my $parameterCount = @{$parameters};
-    $parameterCount += 1 if $function->signature->extendedAttributes->{CustomArgumentHandling};
-    return $parameterCount;
-}
-
-sub DartAnonymousArguments
-{
-    my ($parameterCount) = @_;
-    return "" unless $parameterCount;
-    return join(", ", map { "_arg$_" } (0..$parameterCount - 1));
-}
-
-sub DartAnonymousNamedOptionalParameters
-{
-    my ($parameterCount) = @_;
-    return "" unless $parameterCount;
-    return "[" . DartAnonymousArguments($parameterCount) . "]";
-}
-
-sub CreateFunctionNativeDescriptor
-{
-    my ($interfaceName, $functionName, $argumentCount) = @_;
-    my $descriptor = NativeBindingDescriptor->new(
-        cppCallbackName => "${functionName}Callback",
-        nativeId => "${interfaceName}_${functionName}_Callback",
-        argumentCount => $argumentCount);
-    push(@dartNatives, $descriptor);
-    return $descriptor;
-}
-
-sub CreateGetterNativeDescriptor
-{
-    my ($interfaceName, $attributeName) = @_;
-    my $descriptor = NativeBindingDescriptor->new(
-        cppCallbackName => "${attributeName}Getter",
-        nativeId => "${interfaceName}_${attributeName}_Getter",
-        argumentCount => 1);
-    push(@dartNatives, $descriptor);
-    return $descriptor;
-}
-
-sub CreateSetterNativeDescriptor
-{
-    my ($interfaceName, $attributeName) = @_;
-    my $descriptor = NativeBindingDescriptor->new(
-        cppCallbackName => "${attributeName}Setter",
-        nativeId => "${interfaceName}_${attributeName}_Setter",
-        argumentCount => 2);
-    push(@dartNatives, $descriptor);
-    return $descriptor;
-}
-
-sub GenerateDartOptionalArgumentsResolver
-{
-    my ($interfaceName, $function) = @_;
-
-    my $interfaceMethodDeclaration = DartInterfaceMethodDeclaration($interfaceName, $function);
-    push(@dartInterfaceContent, "  $interfaceMethodDeclaration;\n");
-
-    my @resolver = ();
-    push(@resolver, "  $interfaceMethodDeclaration {\n");
-    my @parameters = ();
-    foreach my $parameterIndex (0..@{$function->parameters}) {
-        my $parameter = @{$function->parameters}[$parameterIndex];
-        if (!$parameter || IsParameterOptionalInWebKit($parameter)) {
-            my $functionName = GenerateNativeBinding($interfaceName, $function, \@parameters);
-            if ($parameter) {
-                my $parameterName = $parameter->name;
-                push(@resolver, "    if ($parameterName === null)\n  ");
-            }
-            my $parameterNames = join(", ", map { $_->name } @parameters);
-            push(@resolver, "    return $functionName($parameterNames);\n");
-        }
-        push(@parameters, $parameter);
-    }
-    push(@resolver, "  }\n");
-    push(@dartImplContent, join("", @resolver));
-}
-
-sub GenerateDartOverloadResolver
-{
-    my ($interfaceName, $function) = @_;
-
-    # Generate code for choosing the correct overload to call. Overloads are
-    # chosen based on the the type of the arguments. When more than a single
-    # overload is applicable, precedence is given according to the order of
-    # declaration in the IDL.
-
-    my $interfaceMethodDeclaration = DartInterfaceMethodDeclaration($interfaceName, $function);
-    push(@dartInterfaceContent, "  $interfaceMethodDeclaration;\n");
-
-    my @resolver = ();
-    push(@resolver, "  $interfaceMethodDeclaration {\n");
-    my $maxParameterCount = MaxOverloadParameterCount($function);
-    foreach my $overload (@{$function->{overloads}}) {
-        my @parameters = ();
-        my @parameterNames = ();
-        my @parameterChecks = map { "_arg$_ === null" } (0..$maxParameterCount - 1);
-        foreach my $parameterIndex (0..@{$overload->parameters}) {
-            my $parameter = @{$overload->parameters}[$parameterIndex];
-            if (!$parameter || IsParameterOptionalInWebKit($parameter)) {
-                my $functionName = GenerateNativeBinding($interfaceName, $overload, \@parameters);
-                my $parameterNames = join(", ", @parameterNames);
-                my $parameterChecks = join(" && ", @parameterChecks);
-                push(@resolver, <<END);
-    if ($parameterChecks)
-      return $functionName($parameterNames);
-END
-            }
-            last if !$parameter;
-            my $idlType = $codeGenerator->StripModule($parameter->type);
-            my $dartType = IDLTypeToDart($idlType);
-            push(@parameterNames, "_arg$parameterIndex");
-            $parameterChecks[$parameterIndex] = "_arg$parameterIndex is $dartType";
-            push(@parameters, $parameter);
-        }
-    }
-
-    # FIXME: throw appropriate exception when overload is not found.
-    push(@resolver, <<END);
-    throw "Failed to find overload of @{[$function->signature->name]}";
-  }
-END
-    push(@dartImplContent, join("", @resolver));
-}
-
-sub ParentInterface
-{
-    my $dataNode = shift;
-
-    foreach (@{$dataNode->parents}) {
-        my $parent = $codeGenerator->StripModule($_);
-        if ($parent eq "EventTarget") {
-            next;
-        }
-        return $parent;
-    }
-}
-
-my %excludedInterfaces = (
-  "SVGURIReference" => 1, # Is not in the list of SVG idls files (see WebCore.gypi), v8 bindings do not immediately compile
-  # Explicitly excluded in WebCore.gyp
-  "ElementTimeControl" => 1,
-  "SVGExternalResourcesRequired" => 1,
-  "SVGFilterPrimitiveStandardAttributes" => 1,
-  "SVGFitToViewBox" => 1,
-  "SVGLangSpace" => 1,
-  "SVGLocatable" => 1,
-  "SVGStylable" => 1,
-  "SVGTests" => 1,
-  "SVGTransformable" => 1,
-  "SVGViewSpec" => 1,
-  "SVGZoomAndPan" => 1,
-);
-
-sub ListLike
-{
-    my ($elementType, $needsAuxiliaryAccessors) = @_;
-
-    my @auxiliaryMethods = ();
-    if ($needsAuxiliaryAccessors) {
-        push(@auxiliaryMethods, ["$elementType operator [] (int index)", "numericIndexGetter", 2]);
-        push(@auxiliaryMethods, ["void operator []= (int index, $elementType value)", "numericIndexSetter", 3]);
-    }
-
-    return IDLTypeInfoStruct->new(
-        additionalInterfaces => ["List<$elementType>"],
-        superClass => "ListBase<$elementType>",
-        auxilaryMethods => \@auxiliaryMethods
-    );
-}
-
-sub MapLike
-{
-    # FIXME: most probably we need to deduce more types using hints like
-    # HasNameGetter, CustomDeleteProperty, CustomGetPropertyNames, DelegatingPutFunction
-    # attributes.
-    # FIXME: technically at least DOMStringMap.setItem and DOMStringMap.item could be automatically
-    # generated and then used from [] and []=.  I don't do it for now not to mess up with IDLs too
-    # much.
-    # FIXME: support removal of elements if allowed (it is at least for DOMStringMap.)
-    my ($interfaceName, $keyType, $elementType) = @_;
-    return IDLTypeInfoStruct->new(
-        additionalInterfaces => ["Map<$keyType, $elementType>"],
-        superClass => "MapBase<$keyType, $elementType>",
-        auxilaryMethods => [
-            ["Collection<$keyType> getKeys()", "getKeys", 1],
-            ["$elementType operator [] ($keyType k)", "item", 2],
-            ["operator []= ($keyType k, $elementType v)", "setItem", 3],
-            ["$elementType remove($keyType k)", "deleteItem", 2],
-        ],
-    );
-}
-
-my %idlTypeInfoOverrides = (
-  "CanvasPixelArray" => ListLike("int", 1),
-  "DOMStringMap" => MapLike("DOMStringMap", "String", "String"),
-  "HTMLCollection" => ListLike("Node"),
-  "NodeList" => ListLike("Node"),
-  "StyleSheetList" => ListLike("StyleSheet"),
-);
-
-# FIXME: turn into the single IDL type info registry.
-sub IDLTypeInfo
-{
-    my ($dataNode,) = @_;
-    my $override = $idlTypeInfoOverrides{$dataNode->name};
-    return $override if $override;
-
-    my $parentInterface = ParentInterface($dataNode);
-    return IDLTypeInfoStruct->new(
-        superClass => $parentInterface ? "${parentInterface}Implementation" : "DOMType",
-    );
-}
-
-sub GenerateSource
-{
-    my ($object, $dataNode) = @_;
-
-    my $interfaceName = $dataNode->name;
-    my $w3cInterfaceName = IDLTypeToW3C($interfaceName);
-
-    push(@dartInterfaceContent, $headerTemplate);
-
-    # Build extends clause if any.
-    my $extendsClause = "";
-    my $parentInterface = ParentInterface($dataNode);
-    my $isEventTarget = $dataNode->extendedAttributes->{EventTarget};
-    my @implementedInterfaces = ();
-    push(@implementedInterfaces, $parentInterface) if $parentInterface;
-    push(@implementedInterfaces, "EventTarget") if $isEventTarget;
-
-    push(@implementedInterfaces, @{IDLTypeInfo($dataNode)->additionalInterfaces});
-    push(@implementedInterfaces, @allParents);
-
-    if (@implementedInterfaces) {
-        $extendsClause = " extends " . join(", ", @implementedInterfaces);
-    }
-
-    # Build default clause if any.
-    my $defaultClause = "";
-    if (HasCustomConstructor($dataNode)) {
-        $defaultClause = " default ${w3cInterfaceName}Implementation";
-        push(@customCallbackDeclarations, GenerateCustomCallbackDeclaration("constructorCallback"));
-    }
-
-    push(@dartInterfaceContent, "\ninterface ${w3cInterfaceName}${extendsClause}${defaultClause} {\n");
-    push(@dartInterfaceContent, "\n  // Constants.\n");
-    foreach my $constant (@{$dataNode->constants}) {
-        my $name = $constant->name;
-        my $value = $constant->value;
-
-        push(@dartInterfaceContent, "  static final int $name = $value;\n");
-    }
-
-    # Generate Dart implementation prologue.
-    my $implementationClassName = "${interfaceName}Implementation";
-    my $superClass = IDLTypeInfo($dataNode)->superClass;
-    push(@dartImplContent, $headerTemplate);
-    push(@dartImplContent, "\nclass $implementationClassName extends $superClass implements $interfaceName {\n");
-
-    GenerateImplementationPrologue($dataNode);
-
-    # Generate fields.
-    # FIXME: special treatment of constructors attributes (see V8 code generator).
-    push(@dartInterfaceContent, "\n  // Fields.\n");
-    push(@dartImplContent, "\n  // Fields.\n");
-    push(@implContent, "\n// Getters & setters.\n");
-    foreach my $attribute (@{$dataNode->attributes}) {
-        next if IgnoredAttribute($interfaceName, $attribute);
-        GenerateField($interfaceName, $attribute);
-    }
-
-    # Generate methods.
-    push(@dartInterfaceContent, "\n  // Methods.\n");
-    push(@dartImplContent, "\n  // Methods.\n");
-    push(@implContent, "\n// Callbacks.\n");
-    foreach my $function (@{$dataNode->functions}) {
-        next if IgnoredCallback($interfaceName, $function);
-        next if HasOverloads($function) && $function->{overloadIndex} != 1;
-        GenerateMethod($interfaceName, $function);
-    }
-
-    foreach my $auxilaryMethod (@{IDLTypeInfo($dataNode)->auxilaryMethods}) {
-        my $dartDeclaration = $auxilaryMethod->[0];
-        my $descriptor = CreateFunctionNativeDescriptor($interfaceName, $auxilaryMethod->[1], $auxilaryMethod->[2]);
-        my $nativeId = $descriptor->nativeId;
-        push(@dartImplContent, "  $dartDeclaration native \"$nativeId\";\n");
-        push(@customCallbackDeclarations, GenerateCustomCallbackDeclaration($descriptor->cppCallbackName));
-    }
-
-    if (HasCustomConstructor($dataNode)) {
-        my $parameterCount = $dataNode->extendedAttributes->{"ConstructorParameters"} || 0;
-        my $descriptor = CreateFunctionNativeDescriptor($interfaceName, "constructor", 1 + $parameterCount);
-        my $nativeId = $descriptor->nativeId;
-        my $parameters = DartAnonymousNamedOptionalParameters($parameterCount);
-        my $arguments = DartAnonymousArguments($parameterCount);
-        push(@dartInterfaceContent, "  $w3cInterfaceName($parameters);\n");
-        push(@dartImplContent, <<END);
-  $implementationClassName($parameters) {
-    this._bind($arguments);
-  }
-END
-        push(@dartImplContent, "  void _bind($arguments) native \"$nativeId\";\n");
-    }
-
-    # Generate implementation support.
-    # FIXME: get rid of implementation support completely.
-    push(@dartImplContent, <<END);
-  // Implementation support.
-  static $implementationClassName _create$implementationClassName() => new $implementationClassName._create$implementationClassName();
-  $implementationClassName._create$implementationClassName();
-
-  String get typeName() => \"$interfaceName\";
-END
-
-    push(@dartInterfaceContent, "}\n");
-    push(@dartImplContent, "}\n");
-
-    if (HasW3CName($interfaceName)) {
-        push(@dartInterfaceContent, "\ninterface ${interfaceName} extends ${w3cInterfaceName} {}\n");
-    }
-
-    GenerateImplementationEpilogue($dataNode);
-}
-
-sub GenerateField
-{
-    my ($interfaceName, $attribute) = @_;
-
-    my $attributeName = DartName($interfaceName, $attribute->signature->name);
-    my $attributeType = $attribute->signature->type;
-    my $dartAttributeType = IDLTypeToDart($attributeType);
-
-    # Generate field declaration.
-    my $final = HasSetter($attribute) ? "" : "final ";
-    push(@dartInterfaceContent, "  $final$dartAttributeType $attributeName;\n");
-
-    # Generate getter implementation.
-    my $getterDescriptor = CreateGetterNativeDescriptor($interfaceName, $attributeName);
-    my $getterNativeId = $getterDescriptor->nativeId;
-    push(@dartImplContent, "  $dartAttributeType get $attributeName() native \"$getterNativeId\";\n");
-    if (HasCustomGetter($attribute)) {
-        push(@customCallbackDeclarations, GenerateCustomCallbackDeclaration($getterDescriptor->cppCallbackName));
-    } else {
-        my ($functionName, @arguments) = $codeGenerator->GetterExpression(\%implIncludes, $interfaceName, $attribute);
-        my $raisesExceptions = scalar(@{$attribute->getterExceptions});
-        GenerateGenericBindingsFunction($getterDescriptor->cppCallbackName, $interfaceName, $functionName, \@arguments, [], $attributeType, $raisesExceptions, $attribute->signature->extendedAttributes);
-    }
-
-    return unless HasSetter($attribute);
-
-    # Generate setter implementation.
-    my $setterDescriptor = CreateSetterNativeDescriptor($interfaceName, $attributeName);
-    my $setterNativeId = $setterDescriptor->nativeId;
-    push(@dartImplContent, "  void set $attributeName($dartAttributeType) native \"$setterNativeId\";\n");
-    if (HasCustomSetter($attribute)) {
-        push(@customCallbackDeclarations, GenerateCustomCallbackDeclaration($setterDescriptor->cppCallbackName));
-    } else {
-        my ($functionName, @arguments) = $codeGenerator->SetterExpression(\%implIncludes, $interfaceName, $attribute);
-        my $raisesExceptions = scalar(@{$attribute->setterExceptions});
-        GenerateGenericBindingsFunction($setterDescriptor->cppCallbackName, $interfaceName, $functionName, \@arguments, [$attribute->signature], "void", $raisesExceptions, $attribute->signature->extendedAttributes, 1);
-    }
-}
-
-sub GenerateMethod
-{
-    my ($interfaceName, $function) = @_;
-
-    my $functionName = DartName($interfaceName, $function->signature->name);
-
-    if (!$function->signature->extendedAttributes->{"Custom"}) {
-        if (HasOverloads($function)) {
-            GenerateDartOverloadResolver($interfaceName, $function);
-        } elsif (HasOptionalParameters($function)) {
-            GenerateDartOptionalArgumentsResolver($interfaceName, $function);
-        } else {
-            my $interfaceMethodDeclaration = DartInterfaceMethodDeclaration($interfaceName, $function);
-            push(@dartInterfaceContent, "  $interfaceMethodDeclaration;\n");
-            my $bindingFunctionName = GenerateNativeBinding($interfaceName, $function, $function->parameters);
-            die if $bindingFunctionName ne $functionName;
-        }
-    } else {
-        my $parameters;
-        my $parameterCount;
-        if (HasOverloads($function)) {
-            $parameterCount = MaxOverloadParameterCount($function);
-            $parameters = DartAnonymousNamedOptionalParameters($parameterCount);
-        } else {
-            $parameters = DartParameters($function, $function->parameters, 1);
-            $parameterCount = DartParameterCount($function, $function->parameters);
-        }
-        my $methodDeclaration = DartMethodDeclaration($functionName, $parameters, $function->signature->type);
-        my $descriptor = CreateFunctionNativeDescriptor($interfaceName, $functionName, 1 + $parameterCount);
-        my $nativeId = $descriptor->nativeId;
-        push(@dartInterfaceContent, "  $methodDeclaration;\n");
-        push(@dartImplContent, "  $methodDeclaration native \"$nativeId\";\n");
-        push(@customCallbackDeclarations, GenerateCustomCallbackDeclaration($descriptor->cppCallbackName));
-    }
-
-    # If there is a method named "item", duplicate it as operator [].
-    if ($functionName eq "item") {
-        # Consider operator [] should support overloads and optional arguments.
-        die "$interfaceName.item has overloads" if HasOverloads($function);
-        die "$interfaceName.item has optional arguments" if HasOptionalParameters($function);
-
-        my $subscriptOperatorDeclaration = DartInterfaceMethodDeclaration($interfaceName, $function, "operator []");
-        my $parameters = join ", ", (map { $_->name } @{$function->parameters});
-        push(@dartInterfaceContent, "  $subscriptOperatorDeclaration;\n");
-        push(@dartImplContent, "  $subscriptOperatorDeclaration { return item($parameters); }\n");
-    }
-}
-
-sub GenerateNativeBinding
-{
-    my ($interfaceName, $function, $parameters) = @_;
-
-    my $functionName = DartName($interfaceName, $function->signature->name);
-    if (HasOverloads($function)) {
-        $functionName .= $function->{overloadIndex};
-    }
-    if (HasOptionalParameters($function)) {
-        $functionName .= "_" . @$parameters;
-    }
-
-    my $extendedAttributes = $function->signature->extendedAttributes;
-    my $returnType = $function->signature->type;
-
-    my $dartParameters = DartParameters($function, $parameters, 0);
-    my $dartParameterCount = DartParameterCount($function, $parameters);
-    my $methodDeclaration = DartMethodDeclaration($functionName, $dartParameters, $returnType);
-    my $descriptor = CreateFunctionNativeDescriptor($interfaceName, $functionName, 1 + $dartParameterCount);
-    my $nativeId = $descriptor->nativeId;
-    push(@dartImplContent, <<END);
-  $methodDeclaration native "$nativeId";
-END
-
-    my $nativeFunctionName;
-    if ($extendedAttributes->{ImplementationFunction}) {
-        $nativeFunctionName = $extendedAttributes->{ImplementationFunction};
-    } else {
-        $nativeFunctionName = $function->signature->name;
-    }
-    my $raisesExceptions = scalar(@{$function->raisesExceptions});
-    GenerateGenericBindingsFunction($descriptor->cppCallbackName, $interfaceName, $nativeFunctionName, [], $parameters, $returnType, $raisesExceptions, $extendedAttributes);
-
-    return $functionName;
-}
-
-# Internal helper
-sub WriteData
-{
-    if (defined($IMPL)) {
-        # Write content to file.
-        print $IMPL @implContentHeader;
-
-        print $IMPL @implFixedHeader;
-
-        print $IMPL GenerateIncludes(keys(%implIncludes));
-
-        print $IMPL "\n";
-        print $IMPL @implContent;
-        close($IMPL);
-        undef($IMPL);
-
-        %implIncludes = ();
-        @implFixedHeader = ();
-        @implHeaderContent = ();
-        @implContent = ();
-        @dartNatives = ();
-    }
-
-    if (defined($HEADER)) {
-        # Write content to file.
-        print $HEADER @headerContent;
-        close($HEADER);
-        undef($HEADER);
-
-        @headerContent = ();
-    }
-
-    if (defined($DART_INTERFACE)) {
-      # Write content of Dart file.
-      print $DART_INTERFACE @dartInterfaceContent;
-      close($DART_INTERFACE);
-      undef($DART_INTERFACE);
-
-      @dartInterfaceContent = ();
-    }
-
-    if (defined($DART_IMPL)) {
-      # Write content of Dart file.
-      print $DART_IMPL @dartImplContent;
-      close($DART_IMPL);
-      undef($DART_IMPL);
-
-      @dartImplContent = ();
-    }
-}