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/*
* Copyright (C) 2010 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef Dictionary_h
#define Dictionary_h
#include "bindings/core/v8/ExceptionMessages.h"
#include "bindings/core/v8/ExceptionState.h"
#include "bindings/core/v8/Nullable.h"
#include "bindings/core/v8/ScriptValue.h"
#include "bindings/core/v8/V8Binding.h"
#include "bindings/core/v8/V8BindingMacros.h"
#include "core/dom/MessagePort.h"
#include "core/events/EventListener.h"
#include "wtf/HashMap.h"
#include "wtf/HashSet.h"
#include "wtf/Vector.h"
#include "wtf/text/AtomicString.h"
#include "wtf/text/WTFString.h"
#include <v8.h>
namespace blink {
// Dictionary class provides ways to retrieve property values as C++ objects
// from a V8 object. Instances of this class must not outlive V8's handle scope
// because they hold a V8 value without putting it on persistent handles.
class Dictionary {
ALLOW_ONLY_INLINE_ALLOCATION();
public:
Dictionary();
Dictionary(const v8::Handle<v8::Value>& options, v8::Isolate*, ExceptionState&);
~Dictionary();
Dictionary& operator=(const Dictionary&);
// This is different from the default constructor:
// * isObject() is true when using createEmpty().
// * isUndefinedOrNull() is true when using default constructor.
static Dictionary createEmpty(v8::Isolate*);
bool isObject() const;
bool isUndefinedOrNull() const;
bool get(const String&, Dictionary&) const;
bool get(const String&, v8::Local<v8::Value>&) const;
// Sets properties using default attributes.
bool set(const String&, const v8::Handle<v8::Value>&);
bool set(const String&, const String&);
bool set(const String&, unsigned);
bool set(const String&, const Dictionary&);
v8::Handle<v8::Value> v8Value() const { return m_options; }
class ConversionContext {
public:
explicit ConversionContext(ExceptionState& exceptionState)
: m_exceptionState(exceptionState)
, m_dirty(true)
{
resetPerPropertyContext();
}
ExceptionState& exceptionState() const { return m_exceptionState; }
bool isNullable() const { return m_isNullable; }
String typeName() const { return m_propertyTypeName; }
ConversionContext& setConversionType(const String&, bool);
void throwTypeError(const String& detail);
void resetPerPropertyContext();
private:
ExceptionState& m_exceptionState;
bool m_dirty;
bool m_isNullable;
String m_propertyTypeName;
};
class ConversionContextScope {
public:
explicit ConversionContextScope(ConversionContext& context)
: m_context(context) { }
~ConversionContextScope()
{
m_context.resetPerPropertyContext();
}
private:
ConversionContext& m_context;
};
bool convert(ConversionContext&, const String&, Dictionary&) const;
bool getOwnPropertiesAsStringHashMap(HashMap<String, String>&) const;
bool getPropertyNames(Vector<String>&) const;
bool hasProperty(const String&) const;
v8::Isolate* isolate() const { return m_isolate; }
bool getKey(const String& key, v8::Local<v8::Value>&) const;
private:
v8::Handle<v8::Value> m_options;
v8::Isolate* m_isolate;
ExceptionState* m_exceptionState;
};
template<>
struct NativeValueTraits<Dictionary> {
static inline Dictionary nativeValue(const v8::Handle<v8::Value>& value, v8::Isolate* isolate, ExceptionState& exceptionState)
{
return Dictionary(value, isolate, exceptionState);
}
};
// DictionaryHelper is a collection of static methods for getting or
// converting a value from Dictionary.
struct DictionaryHelper {
template <typename T>
static bool get(const Dictionary&, const String& key, T& value);
template <typename T>
static bool get(const Dictionary&, const String& key, T& value, bool& hasValue);
template <typename T>
static bool get(const Dictionary&, const String& key, T& value, ExceptionState&);
template <typename T>
static bool getWithUndefinedOrNullCheck(const Dictionary& dictionary, const String& key, T& value)
{
v8::Local<v8::Value> v8Value;
if (!dictionary.getKey(key, v8Value) || isUndefinedOrNull(v8Value))
return false;
return DictionaryHelper::get(dictionary, key, value);
}
template <template <typename> class PointerType, typename T>
static bool get(const Dictionary&, const String& key, PointerType<T>& value);
template <typename T>
static bool convert(const Dictionary&, Dictionary::ConversionContext&, const String& key, T& value);
template <typename T>
static bool convert(const Dictionary&, Dictionary::ConversionContext&, const String& key, Nullable<T>& value);
template <template <typename> class PointerType, typename T>
static bool convert(const Dictionary&, Dictionary::ConversionContext&, const String& key, PointerType<T>& value);
};
}
#endif // Dictionary_h
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