1 files changed, 130 insertions, 0 deletions
diff --git a/V8Binding/v8/v8_binding.h b/V8Binding/v8/v8_binding.h
new file mode 100644
index 0000000..8300dd7
--- /dev/null
+++ b/V8Binding/v8/v8_binding.h
@@ -0,0 +1,130 @@
+// Copyright (c) 2006-2008 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.
+
+#ifndef V8_BINDING_H__
+#define V8_BINDING_H__
+
+#include "config.h"
+
+#include "MathExtras.h"
+#include "PlatformString.h"
+
+#include <v8.h>
+
+namespace WebCore {
+
+// The string returned by this function is still owned by the argument
+// and will be deallocated when the argument is deallocated.
+inline const uint16_t* FromWebCoreString(const String& str) {
+  return reinterpret_cast<const uint16_t*>(str.characters());
+}
+
+// Convert v8 types to a WebCore::String. If the V8 string is not already
+// an external string then it is transformed into an external string at this
+// point to avoid repeated conversions.
+String v8StringToWebCoreString(v8::Handle<v8::String> obj);
+String v8ValueToWebCoreString(v8::Handle<v8::Value> obj);
+
+// TODO(mbelshe): drop this in favor of the type specific
+//    v8ValueToWebCoreString when we rework the code generation.
+inline String ToWebCoreString(v8::Handle<v8::Value> obj) {
+    return v8ValueToWebCoreString(obj);
+}
+
+// Convert v8 types to a WebCore::AtomicString.
+AtomicString v8StringToAtomicWebCoreString(v8::Handle<v8::String> obj);
+AtomicString v8ValueToAtomicWebCoreString(v8::Handle<v8::Value> obj);
+
+inline String valueToStringWithNullCheck(v8::Handle<v8::Value> value) {
+  if (value->IsNull()) return String();
+  return ToWebCoreString(value);
+}
+
+inline String valueToStringWithNullOrUndefinedCheck(
+    v8::Handle<v8::Value> value) {
+  if (value->IsNull() || value->IsUndefined()) return String();
+  return ToWebCoreString(value);
+}
+
+// Convert a value to a 32-bit integer.  The conversion fails if the
+// value cannot be converted to an integer or converts to nan or to an
+// infinity.
+// FIXME: Rename to toInt32() once V8 bindings migration is complete.
+inline int ToInt32(v8::Handle<v8::Value> value, bool& ok) {
+  ok = true;
+
+  // Fast case.  The value is already a 32-bit integer.
+  if (value->IsInt32()) {
+    return value->Int32Value();
+  }
+
+  // Can the value be converted to a number?
+  v8::Local<v8::Number> number_object = value->ToNumber();
+  if (number_object.IsEmpty()) {
+    ok = false;
+    return 0;
+  }
+
+  // Does the value convert to nan or to an infinity?
+  double number_value = number_object->Value();
+  if (isnan(number_value) || isinf(number_value)) {
+    ok = false;
+    return 0;
+  }
+
+  // Can the value be converted to a 32-bit integer?
+  v8::Local<v8::Int32> int_value = value->ToInt32();
+  if (int_value.IsEmpty()) {
+    ok = false;
+    return 0;
+  }
+
+  // Return the result of the int32 conversion.
+  return int_value->Value();
+}
+
+// Convert a value to a 32-bit integer assuming the conversion cannot fail.
+// FIXME: Rename to toInt32() once V8 bindings migration is complete.
+inline int ToInt32(v8::Handle<v8::Value> value) {
+  bool ok;
+  return ToInt32(value, ok);
+}
+
+inline String ToString(const String& string) {
+  return string;
+}
+
+// Convert a string to a V8 string.
+v8::Handle<v8::String> v8String(const String& str);
+
+inline v8::Handle<v8::String> v8UndetectableString(const String& str) {
+  return v8::String::NewUndetectable(FromWebCoreString(str), str.length());
+}
+
+// Return a V8 external string that shares the underlying buffer with the given
+// WebCore string. The reference counting mechanism is used to keep the
+// underlying buffer alive while the string is still live in the V8 engine.
+v8::Local<v8::String> v8ExternalString(const String& str);
+
+inline v8::Handle<v8::Value> v8StringOrNull(const String& str) {
+  return str.isNull()
+    ? v8::Handle<v8::Value>(v8::Null())
+    : v8::Handle<v8::Value>(v8String(str));
+}
+
+inline v8::Handle<v8::Value> v8StringOrUndefined(const String& str) {
+  return str.isNull()
+    ? v8::Handle<v8::Value>(v8::Undefined())
+    : v8::Handle<v8::Value>(v8String(str));
+}
+
+inline v8::Handle<v8::Value> v8StringOrFalse(const String& str) {
+  return str.isNull()
+    ? v8::Handle<v8::Value>(v8::False())
+    : v8::Handle<v8::Value>(v8String(str));
+}
+
+}  // namespace WebCore
+
+#endif  // V8_BINDING_H__