bindings: Add support for nested union types

third_party/WebKit/Source/bindings/tests/results/core/ByteStringOrNodeList.cpp

Index: third_party/WebKit/Source/bindings/tests/results/core/ByteStringOrNodeList.cpp
diff --git a/third_party/WebKit/Source/bindings/tests/results/core/ByteStringOrNodeList.cpp b/third_party/WebKit/Source/bindings/tests/results/core/ByteStringOrNodeList.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..7a562f5fc20191952135cd003b7582434cdf8f93
--- /dev/null
+++ b/third_party/WebKit/Source/bindings/tests/results/core/ByteStringOrNodeList.cpp
@@ -0,0 +1,111 @@
+// 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.cpp.tmpl
+
+// clang-format off
+#include "ByteStringOrNodeList.h"
+
+#include "bindings/core/v8/IDLTypes.h"
+#include "bindings/core/v8/NativeValueTraitsImpl.h"
+#include "bindings/core/v8/ToV8.h"
+#include "bindings/core/v8/V8NodeList.h"
+#include "core/dom/NameNodeList.h"
+#include "core/dom/NodeList.h"
+#include "core/dom/StaticNodeList.h"
+#include "core/html/LabelsNodeList.h"
+
+namespace blink {
+
+ByteStringOrNodeList::ByteStringOrNodeList() : m_type(SpecificTypeNone) {}
+
+String ByteStringOrNodeList::getAsByteString() const {
+  DCHECK(isByteString());
+  return m_byteString;
+}
+
+void ByteStringOrNodeList::setByteString(String value) {
+  DCHECK(isNull());
+  m_byteString = value;
+  m_type = SpecificTypeByteString;
+}
+
+ByteStringOrNodeList ByteStringOrNodeList::fromByteString(String value) {
+  ByteStringOrNodeList container;
+  container.setByteString(value);
+  return container;
+}
+
+NodeList* ByteStringOrNodeList::getAsNodeList() const {
+  DCHECK(isNodeList());
+  return m_nodeList;
+}
+
+void ByteStringOrNodeList::setNodeList(NodeList* value) {
+  DCHECK(isNull());
+  m_nodeList = value;
+  m_type = SpecificTypeNodeList;
+}
+
+ByteStringOrNodeList ByteStringOrNodeList::fromNodeList(NodeList* value) {
+  ByteStringOrNodeList container;
+  container.setNodeList(value);
+  return container;
+}
+
+ByteStringOrNodeList::ByteStringOrNodeList(const ByteStringOrNodeList&) = default;
+ByteStringOrNodeList::~ByteStringOrNodeList() = default;
+ByteStringOrNodeList& ByteStringOrNodeList::operator=(const ByteStringOrNodeList&) = default;
+
+DEFINE_TRACE(ByteStringOrNodeList) {
+  visitor->trace(m_nodeList);
+}
+
+void V8ByteStringOrNodeList::toImpl(v8::Isolate* isolate, v8::Local<v8::Value> v8Value, ByteStringOrNodeList& impl, UnionTypeConversionMode conversionMode, ExceptionState& exceptionState) {
+  if (v8Value.IsEmpty())
+    return;
+
+  if (conversionMode == UnionTypeConversionMode::Nullable && isUndefinedOrNull(v8Value))
+    return;
+
+  if (V8NodeList::hasInstance(v8Value, isolate)) {
+    NodeList* cppValue = V8NodeList::toImpl(v8::Local<v8::Object>::Cast(v8Value));
+    impl.setNodeList(cppValue);
+    return;
+  }
+
+  {
+    V8StringResource<> cppValue = NativeValueTraits<IDLByteString>::nativeValue(isolate, v8Value, exceptionState);
+    if (exceptionState.hadException())
+      return;
+    impl.setByteString(cppValue);
+    return;
+  }
+}
+
+v8::Local<v8::Value> ToV8(const ByteStringOrNodeList& impl, v8::Local<v8::Object> creationContext, v8::Isolate* isolate) {
+  switch (impl.m_type) {
+    case ByteStringOrNodeList::SpecificTypeNone:
+      return v8::Null(isolate);
+    case ByteStringOrNodeList::SpecificTypeByteString:
+      return v8String(isolate, impl.getAsByteString());
+    case ByteStringOrNodeList::SpecificTypeNodeList:
+      return ToV8(impl.getAsNodeList(), creationContext, isolate);
+    default:
+      NOTREACHED();
+  }
+  return v8::Local<v8::Value>();
+}
+
+ByteStringOrNodeList NativeValueTraits<ByteStringOrNodeList>::nativeValue(v8::Isolate* isolate, v8::Local<v8::Value> value, ExceptionState& exceptionState) {
+  ByteStringOrNodeList impl;
+  V8ByteStringOrNodeList::toImpl(isolate, value, impl, UnionTypeConversionMode::NotNullable, exceptionState);
+  return impl;
+}
+
+}  // namespace blink