bindings: Add support for nested union types

third_party/WebKit/Source/bindings/tests/results/core/XMLHttpRequestOrString.h

Index: third_party/WebKit/Source/bindings/tests/results/core/XMLHttpRequestOrString.h
diff --git a/third_party/WebKit/Source/bindings/tests/results/core/XMLHttpRequestOrString.h b/third_party/WebKit/Source/bindings/tests/results/core/XMLHttpRequestOrString.h
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index 0000000000000000000000000000000000000000..2b2be8a0b1ecd677cfa083e951037ac531130d92
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+++ b/third_party/WebKit/Source/bindings/tests/results/core/XMLHttpRequestOrString.h
@@ -0,0 +1,96 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// This file has been auto-generated by code_generator_v8.py.
+// DO NOT MODIFY!
+
+// This file has been generated from the Jinja2 template in
+// third_party/WebKit/Source/bindings/templates/union_container.h.tmpl
+
+// clang-format off
+#ifndef XMLHttpRequestOrString_h
+#define XMLHttpRequestOrString_h
+
+#include "bindings/core/v8/Dictionary.h"
+#include "bindings/core/v8/ExceptionState.h"
+#include "bindings/core/v8/NativeValueTraits.h"
+#include "bindings/core/v8/V8Binding.h"
+#include "core/CoreExport.h"
+#include "platform/heap/Handle.h"
+
+namespace blink {
+
+class XMLHttpRequest;
+
+class CORE_EXPORT XMLHttpRequestOrString final {
+  DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
+ public:
+  XMLHttpRequestOrString();
+  bool isNull() const { return m_type == SpecificTypeNone; }
+
+  bool isString() const { return m_type == SpecificTypeString; }
+  String getAsString() const;
+  void setString(String);
+  static XMLHttpRequestOrString fromString(String);
+
+  bool isXMLHttpRequest() const { return m_type == SpecificTypeXMLHttpRequest; }
+  XMLHttpRequest* getAsXMLHttpRequest() const;
+  void setXMLHttpRequest(XMLHttpRequest*);
+  static XMLHttpRequestOrString fromXMLHttpRequest(XMLHttpRequest*);
+
+  XMLHttpRequestOrString(const XMLHttpRequestOrString&);
+  ~XMLHttpRequestOrString();
+  XMLHttpRequestOrString& operator=(const XMLHttpRequestOrString&);
+  DECLARE_TRACE();
+
+ private:
+  enum SpecificTypes {
+    SpecificTypeNone,
+    SpecificTypeString,
+    SpecificTypeXMLHttpRequest,
+  };
+  SpecificTypes m_type;
+
+  String m_string;
+  Member<XMLHttpRequest> m_xmlHttpRequest;
+
+  friend CORE_EXPORT v8::Local<v8::Value> ToV8(const XMLHttpRequestOrString&, v8::Local<v8::Object>, v8::Isolate*);
+};
+
+class V8XMLHttpRequestOrString final {
+ public:
+  CORE_EXPORT static void toImpl(v8::Isolate*, v8::Local<v8::Value>, XMLHttpRequestOrString&, UnionTypeConversionMode, ExceptionState&);
+};
+
+CORE_EXPORT v8::Local<v8::Value> ToV8(const XMLHttpRequestOrString&, v8::Local<v8::Object>, v8::Isolate*);
+
+template <class CallbackInfo>
+inline void v8SetReturnValue(const CallbackInfo& callbackInfo, XMLHttpRequestOrString& impl) {
+  v8SetReturnValue(callbackInfo, ToV8(impl, callbackInfo.Holder(), callbackInfo.GetIsolate()));
+}
+
+template <class CallbackInfo>
+inline void v8SetReturnValue(const CallbackInfo& callbackInfo, XMLHttpRequestOrString& impl, v8::Local<v8::Object> creationContext) {
+  v8SetReturnValue(callbackInfo, ToV8(impl, creationContext, callbackInfo.GetIsolate()));
+}
+
+template <>
+struct NativeValueTraits<XMLHttpRequestOrString> : public NativeValueTraitsBase<XMLHttpRequestOrString> {
+  CORE_EXPORT static XMLHttpRequestOrString nativeValue(v8::Isolate*, v8::Local<v8::Value>, ExceptionState&);
+};
+
+template <>
+struct V8TypeOf<XMLHttpRequestOrString> {
+  typedef V8XMLHttpRequestOrString Type;
+};
+
+}  // namespace blink
+
+// We need to set canInitializeWithMemset=true because HeapVector supports
+// items that can initialize with memset or have a vtable. It is safe to
+// set canInitializeWithMemset=true for a union type object in practice.
+// See https://codereview.chromium.org/1118993002/#msg5 for more details.
+WTF_ALLOW_MOVE_AND_INIT_WITH_MEM_FUNCTIONS(blink::XMLHttpRequestOrString);
+
+#endif  // XMLHttpRequestOrString_h