| /* |
| * Copyright (C) 2009 Google Inc. All rights reserved. |
| * Copyright (C) 2012 Ericsson AB. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * 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. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT |
| * OWNER OR 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 V8Binding_h |
| #define V8Binding_h |
| |
| #include "bindings/v8/DOMWrapperWorld.h" |
| #include "bindings/v8/ExceptionMessages.h" |
| #include "bindings/v8/ScriptValue.h" |
| #include "bindings/v8/V8BindingMacros.h" |
| #include "bindings/v8/V8PerIsolateData.h" |
| #include "bindings/v8/V8StringResource.h" |
| #include "bindings/v8/V8ThrowException.h" |
| #include "bindings/v8/V8ValueCache.h" |
| #include "platform/heap/Heap.h" |
| #include "wtf/MathExtras.h" |
| #include "wtf/text/AtomicString.h" |
| #include <v8.h> |
| |
| namespace WebCore { |
| |
| class LocalDOMWindow; |
| class Document; |
| class EventListener; |
| class ExecutionContext; |
| class ExceptionState; |
| class LocalFrame; |
| class NodeFilter; |
| class ScriptWrappable; |
| class XPathNSResolver; |
| |
| namespace TraceEvent { |
| class ConvertableToTraceFormat; |
| } |
| |
| const int kMaxRecursionDepth = 22; |
| |
| // Schedule a JavaScript error to be thrown. |
| v8::Handle<v8::Value> throwError(V8ErrorType, const String&, v8::Isolate*); |
| |
| // Schedule a JavaScript error to be thrown. |
| v8::Handle<v8::Value> throwError(v8::Handle<v8::Value>, v8::Isolate*); |
| |
| // A helper for throwing JavaScript TypeError. |
| v8::Handle<v8::Value> throwTypeError(const String&, v8::Isolate*); |
| |
| // Helpers for throwing JavaScript TypeErrors for arity mismatches. |
| void throwArityTypeErrorForMethod(const char* method, const char* type, const char* valid, unsigned provided, v8::Isolate*); |
| void throwArityTypeErrorForConstructor(const char* type, const char* valid, unsigned provided, v8::Isolate*); |
| void throwArityTypeError(ExceptionState&, const char* valid, unsigned provided); |
| void throwMinimumArityTypeErrorForMethod(const char* method, const char* type, unsigned expected, unsigned providedLeastNumMandatoryParams, v8::Isolate*); |
| void throwMinimumArityTypeErrorForConstructor(const char* type, unsigned expected, unsigned providedLeastNumMandatoryParams, v8::Isolate*); |
| void throwMinimumArityTypeError(ExceptionState&, unsigned expected, unsigned providedLeastNumMandatoryParams); |
| |
| v8::ArrayBuffer::Allocator* v8ArrayBufferAllocator(); |
| |
| inline v8::Handle<v8::Value> argumentOrNull(const v8::FunctionCallbackInfo<v8::Value>& info, int index) |
| { |
| return index >= info.Length() ? v8::Local<v8::Value>() : info[index]; |
| } |
| |
| template<typename CallbackInfo, typename V> |
| inline void v8SetReturnValue(const CallbackInfo& info, V v) |
| { |
| info.GetReturnValue().Set(v); |
| } |
| |
| template<typename CallbackInfo> |
| inline void v8SetReturnValueBool(const CallbackInfo& info, bool v) |
| { |
| info.GetReturnValue().Set(v); |
| } |
| |
| template<typename CallbackInfo> |
| inline void v8SetReturnValueInt(const CallbackInfo& info, int v) |
| { |
| info.GetReturnValue().Set(v); |
| } |
| |
| template<typename CallbackInfo> |
| inline void v8SetReturnValueUnsigned(const CallbackInfo& info, unsigned v) |
| { |
| info.GetReturnValue().Set(v); |
| } |
| |
| template<typename CallbackInfo> |
| inline void v8SetReturnValueNull(const CallbackInfo& info) |
| { |
| info.GetReturnValue().SetNull(); |
| } |
| |
| template<typename CallbackInfo> |
| inline void v8SetReturnValueUndefined(const CallbackInfo& info) |
| { |
| info.GetReturnValue().SetUndefined(); |
| } |
| |
| template<typename CallbackInfo> |
| inline void v8SetReturnValueEmptyString(const CallbackInfo& info) |
| { |
| info.GetReturnValue().SetEmptyString(); |
| } |
| |
| template <class CallbackInfo> |
| inline void v8SetReturnValueString(const CallbackInfo& info, const String& string, v8::Isolate* isolate) |
| { |
| if (string.isNull()) { |
| v8SetReturnValueEmptyString(info); |
| return; |
| } |
| V8PerIsolateData::from(isolate)->stringCache()->setReturnValueFromString(info.GetReturnValue(), string.impl()); |
| } |
| |
| template <class CallbackInfo> |
| inline void v8SetReturnValueStringOrNull(const CallbackInfo& info, const String& string, v8::Isolate* isolate) |
| { |
| if (string.isNull()) { |
| v8SetReturnValueNull(info); |
| return; |
| } |
| V8PerIsolateData::from(isolate)->stringCache()->setReturnValueFromString(info.GetReturnValue(), string.impl()); |
| } |
| |
| template <class CallbackInfo> |
| inline void v8SetReturnValueStringOrUndefined(const CallbackInfo& info, const String& string, v8::Isolate* isolate) |
| { |
| if (string.isNull()) { |
| v8SetReturnValueUndefined(info); |
| return; |
| } |
| V8PerIsolateData::from(isolate)->stringCache()->setReturnValueFromString(info.GetReturnValue(), string.impl()); |
| } |
| |
| // Convert v8::String to a WTF::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. |
| inline String toCoreString(v8::Handle<v8::String> value) |
| { |
| return v8StringToWebCoreString<String>(value, Externalize); |
| } |
| |
| inline String toCoreStringWithNullCheck(v8::Handle<v8::String> value) |
| { |
| if (value.IsEmpty() || value->IsNull()) |
| return String(); |
| return toCoreString(value); |
| } |
| |
| inline String toCoreStringWithUndefinedOrNullCheck(v8::Handle<v8::String> value) |
| { |
| if (value.IsEmpty() || value->IsNull() || value->IsUndefined()) |
| return String(); |
| return toCoreString(value); |
| } |
| |
| inline AtomicString toCoreAtomicString(v8::Handle<v8::String> value) |
| { |
| return v8StringToWebCoreString<AtomicString>(value, Externalize); |
| } |
| |
| // This method will return a null String if the v8::Value does not contain a v8::String. |
| // It will not call ToString() on the v8::Value. If you want ToString() to be called, |
| // please use the TONATIVE_FOR_V8STRINGRESOURCE_*() macros instead. |
| inline String toCoreStringWithUndefinedOrNullCheck(v8::Handle<v8::Value> value) |
| { |
| if (value.IsEmpty() || !value->IsString()) |
| return String(); |
| return toCoreString(value.As<v8::String>()); |
| } |
| |
| // Convert a string to a V8 string. |
| // 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. |
| inline v8::Handle<v8::String> v8String(v8::Isolate* isolate, const String& string) |
| { |
| if (string.isNull()) |
| return v8::String::Empty(isolate); |
| return V8PerIsolateData::from(isolate)->stringCache()->v8ExternalString(string.impl(), isolate); |
| } |
| |
| inline v8::Handle<v8::String> v8AtomicString(v8::Isolate* isolate, const char* str) |
| { |
| ASSERT(isolate); |
| return v8::String::NewFromUtf8(isolate, str, v8::String::kInternalizedString, strlen(str)); |
| } |
| |
| inline v8::Handle<v8::String> v8AtomicString(v8::Isolate* isolate, const char* str, size_t length) |
| { |
| ASSERT(isolate); |
| return v8::String::NewFromUtf8(isolate, str, v8::String::kInternalizedString, length); |
| } |
| |
| inline v8::Handle<v8::Value> v8Undefined() |
| { |
| return v8::Handle<v8::Value>(); |
| } |
| |
| template <class T> |
| struct V8ValueTraits { |
| // FIXME: This function requires the associated generated header to be |
| // included. Also, this function does not match with other V8ValueTraits |
| // classes. Remove this V8ValueTraits if possible. |
| static inline v8::Handle<v8::Value> toV8Value(const T& value, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate) |
| { |
| return toV8(WTF::getPtr(value), creationContext, isolate); |
| } |
| }; |
| |
| template<> |
| struct V8ValueTraits<String> { |
| static inline v8::Handle<v8::Value> toV8Value(const String& value, v8::Handle<v8::Object>, v8::Isolate* isolate) |
| { |
| return v8String(isolate, value); |
| } |
| }; |
| |
| template<> |
| struct V8ValueTraits<AtomicString> { |
| static inline v8::Handle<v8::Value> toV8Value(const AtomicString& value, v8::Handle<v8::Object>, v8::Isolate* isolate) |
| { |
| return v8String(isolate, value); |
| } |
| }; |
| |
| template<size_t n> |
| struct V8ValueTraits<char[n]> { |
| static inline v8::Handle<v8::Value> toV8Value(char const (&value)[n], v8::Handle<v8::Object>, v8::Isolate* isolate) |
| { |
| return v8String(isolate, value); |
| } |
| }; |
| |
| template<> |
| struct V8ValueTraits<const char*> { |
| static inline v8::Handle<v8::Value> toV8Value(const char* const& value, v8::Handle<v8::Object>, v8::Isolate* isolate) |
| { |
| return v8String(isolate, value); |
| } |
| }; |
| |
| template<> |
| struct V8ValueTraits<int> { |
| static inline v8::Handle<v8::Value> toV8Value(const int& value, v8::Handle<v8::Object>, v8::Isolate* isolate) |
| { |
| return v8::Integer::New(isolate, value); |
| } |
| }; |
| |
| template<> |
| struct V8ValueTraits<long> { |
| static inline v8::Handle<v8::Value> toV8Value(const long& value, v8::Handle<v8::Object>, v8::Isolate* isolate) |
| { |
| return v8::Integer::New(isolate, value); |
| } |
| }; |
| |
| template<> |
| struct V8ValueTraits<unsigned> { |
| static inline v8::Handle<v8::Value> toV8Value(const unsigned& value, v8::Handle<v8::Object>, v8::Isolate* isolate) |
| { |
| return v8::Integer::NewFromUnsigned(isolate, value); |
| } |
| }; |
| |
| template<> |
| struct V8ValueTraits<unsigned long> { |
| static inline v8::Handle<v8::Value> toV8Value(const unsigned long& value, v8::Handle<v8::Object>, v8::Isolate* isolate) |
| { |
| return v8::Integer::NewFromUnsigned(isolate, value); |
| } |
| }; |
| |
| template<> |
| struct V8ValueTraits<float> { |
| static inline v8::Handle<v8::Value> toV8Value(const float& value, v8::Handle<v8::Object>, v8::Isolate* isolate) |
| { |
| return v8::Number::New(isolate, value); |
| } |
| }; |
| |
| template<> |
| struct V8ValueTraits<double> { |
| static inline v8::Handle<v8::Value> toV8Value(const double& value, v8::Handle<v8::Object>, v8::Isolate* isolate) |
| { |
| return v8::Number::New(isolate, value); |
| } |
| }; |
| |
| template<> |
| struct V8ValueTraits<bool> { |
| static inline v8::Handle<v8::Value> toV8Value(const bool& value, v8::Handle<v8::Object>, v8::Isolate* isolate) |
| { |
| return v8::Boolean::New(isolate, value); |
| } |
| }; |
| |
| // V8NullType and V8UndefinedType are used only for the value conversion. |
| class V8NullType { }; |
| class V8UndefinedType { }; |
| |
| template<> |
| struct V8ValueTraits<V8NullType> { |
| static inline v8::Handle<v8::Value> toV8Value(const V8NullType&, v8::Handle<v8::Object>, v8::Isolate* isolate) |
| { |
| return v8::Null(isolate); |
| } |
| }; |
| |
| template<> |
| struct V8ValueTraits<V8UndefinedType> { |
| static inline v8::Handle<v8::Value> toV8Value(const V8UndefinedType&, v8::Handle<v8::Object>, v8::Isolate* isolate) |
| { |
| return v8::Undefined(isolate); |
| } |
| }; |
| |
| template<> |
| struct V8ValueTraits<ScriptValue> { |
| static inline v8::Handle<v8::Value> toV8Value(const ScriptValue& value, v8::Handle<v8::Object>, v8::Isolate*) |
| { |
| return value.v8Value(); |
| } |
| }; |
| |
| template<> |
| struct V8ValueTraits<v8::Handle<v8::Value> > { |
| static inline v8::Handle<v8::Value> toV8Value(const v8::Handle<v8::Value>& value, v8::Handle<v8::Object>, v8::Isolate*) |
| { |
| return value; |
| } |
| }; |
| |
| template<> |
| struct V8ValueTraits<v8::Local<v8::Value> > { |
| static inline v8::Handle<v8::Value> toV8Value(const v8::Local<v8::Value>& value, v8::Handle<v8::Object>, v8::Isolate*) |
| { |
| return value; |
| } |
| }; |
| |
| template<typename T, size_t inlineCapacity> |
| v8::Handle<v8::Value> v8Array(const Vector<T, inlineCapacity>& iterator, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate) |
| { |
| v8::Local<v8::Array> result = v8::Array::New(isolate, iterator.size()); |
| int index = 0; |
| typename Vector<T, inlineCapacity>::const_iterator end = iterator.end(); |
| typedef V8ValueTraits<T> TraitsType; |
| for (typename Vector<T, inlineCapacity>::const_iterator iter = iterator.begin(); iter != end; ++iter) |
| result->Set(v8::Integer::New(isolate, index++), TraitsType::toV8Value(*iter, creationContext, isolate)); |
| return result; |
| } |
| |
| template<typename T, size_t inlineCapacity> |
| v8::Handle<v8::Value> v8Array(const HeapVector<T, inlineCapacity>& iterator, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate) |
| { |
| v8::Local<v8::Array> result = v8::Array::New(isolate, iterator.size()); |
| int index = 0; |
| typename HeapVector<T, inlineCapacity>::const_iterator end = iterator.end(); |
| typedef V8ValueTraits<T> TraitsType; |
| for (typename HeapVector<T, inlineCapacity>::const_iterator iter = iterator.begin(); iter != end; ++iter) |
| result->Set(v8::Integer::New(isolate, index++), TraitsType::toV8Value(*iter, creationContext, isolate)); |
| return result; |
| } |
| |
| template<typename T, size_t inlineCapacity> |
| v8::Handle<v8::Value> v8ArrayNoInline(const Vector<T, inlineCapacity>& iterator, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate) |
| { |
| v8::Local<v8::Array> result = v8::Array::New(isolate, iterator.size()); |
| int index = 0; |
| typename Vector<T, inlineCapacity>::const_iterator end = iterator.end(); |
| for (typename Vector<T, inlineCapacity>::const_iterator iter = iterator.begin(); iter != end; ++iter) |
| result->Set(v8::Integer::New(isolate, index++), toV8NoInline(WTF::getPtr(*iter), creationContext, isolate)); |
| return result; |
| } |
| |
| template<typename T, size_t inlineCapacity> |
| v8::Handle<v8::Value> v8ArrayNoInline(const HeapVector<T, inlineCapacity>& iterator, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate) |
| { |
| v8::Local<v8::Array> result = v8::Array::New(isolate, iterator.size()); |
| int index = 0; |
| typename HeapVector<T, inlineCapacity>::const_iterator end = iterator.end(); |
| for (typename HeapVector<T, inlineCapacity>::const_iterator iter = iterator.begin(); iter != end; ++iter) |
| result->Set(v8::Integer::New(isolate, index++), toV8NoInline(WTF::getPtr(*iter), creationContext, isolate)); |
| return result; |
| } |
| |
| // Conversion flags, used in toIntXX/toUIntXX. |
| enum IntegerConversionConfiguration { |
| NormalConversion, |
| EnforceRange, |
| Clamp |
| }; |
| |
| // Convert a value to a 8-bit signed integer. The conversion fails if the |
| // value cannot be converted to a number or the range violated per WebIDL: |
| // http://www.w3.org/TR/WebIDL/#es-byte |
| int8_t toInt8(v8::Handle<v8::Value>, IntegerConversionConfiguration, ExceptionState&); |
| inline int8_t toInt8(v8::Handle<v8::Value> value, ExceptionState& exceptionState) |
| { |
| return toInt8(value, NormalConversion, exceptionState); |
| } |
| |
| // Convert a value to a 8-bit integer assuming the conversion cannot fail. |
| int8_t toInt8(v8::Handle<v8::Value>); |
| |
| // Convert a value to a 8-bit unsigned integer. The conversion fails if the |
| // value cannot be converted to a number or the range violated per WebIDL: |
| // http://www.w3.org/TR/WebIDL/#es-octet |
| uint8_t toUInt8(v8::Handle<v8::Value>, IntegerConversionConfiguration, ExceptionState&); |
| inline uint8_t toUInt8(v8::Handle<v8::Value> value, ExceptionState& exceptionState) |
| { |
| return toUInt8(value, NormalConversion, exceptionState); |
| } |
| |
| // Convert a value to a 8-bit unsigned integer assuming the conversion cannot fail. |
| uint8_t toUInt8(v8::Handle<v8::Value>); |
| |
| // Convert a value to a 16-bit signed integer. The conversion fails if the |
| // value cannot be converted to a number or the range violated per WebIDL: |
| // http://www.w3.org/TR/WebIDL/#es-short |
| int16_t toInt16(v8::Handle<v8::Value>, IntegerConversionConfiguration, ExceptionState&); |
| inline int16_t toInt16(v8::Handle<v8::Value> value, ExceptionState& exceptionState) |
| { |
| return toInt16(value, NormalConversion, exceptionState); |
| } |
| |
| // Convert a value to a 16-bit integer assuming the conversion cannot fail. |
| int16_t toInt16(v8::Handle<v8::Value>); |
| |
| // Convert a value to a 16-bit unsigned integer. The conversion fails if the |
| // value cannot be converted to a number or the range violated per WebIDL: |
| // http://www.w3.org/TR/WebIDL/#es-unsigned-short |
| uint16_t toUInt16(v8::Handle<v8::Value>, IntegerConversionConfiguration, ExceptionState&); |
| inline uint16_t toUInt16(v8::Handle<v8::Value> value, ExceptionState& exceptionState) |
| { |
| return toUInt16(value, NormalConversion, exceptionState); |
| } |
| |
| // Convert a value to a 16-bit unsigned integer assuming the conversion cannot fail. |
| uint16_t toUInt16(v8::Handle<v8::Value>); |
| |
| // Convert a value to a 32-bit signed integer. The conversion fails if the |
| // value cannot be converted to a number or the range violated per WebIDL: |
| // http://www.w3.org/TR/WebIDL/#es-long |
| int32_t toInt32(v8::Handle<v8::Value>, IntegerConversionConfiguration, ExceptionState&); |
| inline int32_t toInt32(v8::Handle<v8::Value> value, ExceptionState& exceptionState) |
| { |
| return toInt32(value, NormalConversion, exceptionState); |
| } |
| |
| // Convert a value to a 32-bit integer assuming the conversion cannot fail. |
| int32_t toInt32(v8::Handle<v8::Value>); |
| |
| // Convert a value to a 32-bit unsigned integer. The conversion fails if the |
| // value cannot be converted to a number or the range violated per WebIDL: |
| // http://www.w3.org/TR/WebIDL/#es-unsigned-long |
| uint32_t toUInt32(v8::Handle<v8::Value>, IntegerConversionConfiguration, ExceptionState&); |
| inline uint32_t toUInt32(v8::Handle<v8::Value> value, ExceptionState& exceptionState) |
| { |
| return toUInt32(value, NormalConversion, exceptionState); |
| } |
| |
| // Convert a value to a 32-bit unsigned integer assuming the conversion cannot fail. |
| uint32_t toUInt32(v8::Handle<v8::Value>); |
| |
| // Convert a value to a 64-bit signed integer. The conversion fails if the |
| // value cannot be converted to a number or the range violated per WebIDL: |
| // http://www.w3.org/TR/WebIDL/#es-long-long |
| int64_t toInt64(v8::Handle<v8::Value>, IntegerConversionConfiguration, ExceptionState&); |
| inline int64_t toInt64(v8::Handle<v8::Value> value, ExceptionState& exceptionState) |
| { |
| return toInt64(value, NormalConversion, exceptionState); |
| } |
| |
| // Convert a value to a 64-bit integer assuming the conversion cannot fail. |
| int64_t toInt64(v8::Handle<v8::Value>); |
| |
| // Convert a value to a 64-bit unsigned integer. The conversion fails if the |
| // value cannot be converted to a number or the range violated per WebIDL: |
| // http://www.w3.org/TR/WebIDL/#es-unsigned-long-long |
| uint64_t toUInt64(v8::Handle<v8::Value>, IntegerConversionConfiguration, ExceptionState&); |
| inline uint64_t toUInt64(v8::Handle<v8::Value> value, ExceptionState& exceptionState) |
| { |
| return toUInt64(value, NormalConversion, exceptionState); |
| } |
| |
| // Convert a value to a 64-bit unsigned integer assuming the conversion cannot fail. |
| uint64_t toUInt64(v8::Handle<v8::Value>); |
| |
| // Convert a value to a single precision float, which might fail. |
| float toFloat(v8::Handle<v8::Value>, ExceptionState&); |
| |
| // Convert a value to a single precision float assuming the conversion cannot fail. |
| inline float toFloat(v8::Local<v8::Value> value) |
| { |
| return static_cast<float>(value->NumberValue()); |
| } |
| |
| // Converts a value to a String, throwing if any code unit is outside 0-255. |
| String toByteString(v8::Handle<v8::Value>, ExceptionState&); |
| |
| // Converts a value to a String, replacing unmatched UTF-16 surrogates with replacement characters. |
| String toScalarValueString(v8::Handle<v8::Value>, ExceptionState&); |
| |
| inline v8::Handle<v8::Boolean> v8Boolean(bool value, v8::Isolate* isolate) |
| { |
| return value ? v8::True(isolate) : v8::False(isolate); |
| } |
| |
| inline double toCoreDate(v8::Handle<v8::Value> object) |
| { |
| if (object->IsDate()) |
| return v8::Handle<v8::Date>::Cast(object)->ValueOf(); |
| if (object->IsNumber()) |
| return object->NumberValue(); |
| return std::numeric_limits<double>::quiet_NaN(); |
| } |
| |
| inline v8::Handle<v8::Value> v8DateOrNaN(double value, v8::Isolate* isolate) |
| { |
| ASSERT(isolate); |
| return v8::Date::New(isolate, std::isfinite(value) ? value : std::numeric_limits<double>::quiet_NaN()); |
| } |
| |
| // FIXME: Remove the special casing for NodeFilter and XPathNSResolver. |
| PassRefPtrWillBeRawPtr<NodeFilter> toNodeFilter(v8::Handle<v8::Value>, v8::Handle<v8::Object>, ScriptState*); |
| PassRefPtrWillBeRawPtr<XPathNSResolver> toXPathNSResolver(v8::Handle<v8::Value>, v8::Isolate*); |
| |
| template<class T> struct NativeValueTraits; |
| |
| template<> |
| struct NativeValueTraits<String> { |
| static inline String nativeValue(const v8::Handle<v8::Value>& value, v8::Isolate* isolate) |
| { |
| TOSTRING_DEFAULT(V8StringResource<>, stringValue, value, String()); |
| return stringValue; |
| } |
| }; |
| |
| template<> |
| struct NativeValueTraits<unsigned> { |
| static inline unsigned nativeValue(const v8::Handle<v8::Value>& value, v8::Isolate* isolate) |
| { |
| return toUInt32(value); |
| } |
| }; |
| |
| template<> |
| struct NativeValueTraits<float> { |
| static inline float nativeValue(const v8::Handle<v8::Value>& value, v8::Isolate* isolate) |
| { |
| return static_cast<float>(value->NumberValue()); |
| } |
| }; |
| |
| template<> |
| struct NativeValueTraits<double> { |
| static inline double nativeValue(const v8::Handle<v8::Value>& value, v8::Isolate* isolate) |
| { |
| return static_cast<double>(value->NumberValue()); |
| } |
| }; |
| |
| template<> |
| struct NativeValueTraits<v8::Handle<v8::Value> > { |
| static inline v8::Handle<v8::Value> nativeValue(const v8::Handle<v8::Value>& value, v8::Isolate* isolate) |
| { |
| return value; |
| } |
| }; |
| |
| v8::Handle<v8::Value> toV8Sequence(v8::Handle<v8::Value>, uint32_t& length, v8::Isolate*); |
| |
| // Converts a JavaScript value to an array as per the Web IDL specification: |
| // http://www.w3.org/TR/2012/CR-WebIDL-20120419/#es-array |
| template <class T, class V8T> |
| Vector<RefPtr<T> > toRefPtrNativeArrayUnchecked(v8::Local<v8::Value> v8Value, uint32_t length, v8::Isolate* isolate, bool* success = 0) |
| { |
| Vector<RefPtr<T> > result; |
| result.reserveInitialCapacity(length); |
| v8::Local<v8::Object> object = v8::Local<v8::Object>::Cast(v8Value); |
| for (uint32_t i = 0; i < length; ++i) { |
| v8::Handle<v8::Value> element = object->Get(i); |
| if (V8T::hasInstance(element, isolate)) { |
| v8::Handle<v8::Object> elementObject = v8::Handle<v8::Object>::Cast(element); |
| result.uncheckedAppend(V8T::toNative(elementObject)); |
| } else { |
| if (success) |
| *success = false; |
| throwTypeError("Invalid Array element type", isolate); |
| return Vector<RefPtr<T> >(); |
| } |
| } |
| return result; |
| } |
| |
| template <class T, class V8T> |
| Vector<RefPtr<T> > toRefPtrNativeArray(v8::Handle<v8::Value> value, int argumentIndex, v8::Isolate* isolate, bool* success = 0) |
| { |
| if (success) |
| *success = true; |
| |
| v8::Local<v8::Value> v8Value(v8::Local<v8::Value>::New(isolate, value)); |
| uint32_t length = 0; |
| if (value->IsArray()) { |
| length = v8::Local<v8::Array>::Cast(v8Value)->Length(); |
| } else if (toV8Sequence(value, length, isolate).IsEmpty()) { |
| throwTypeError(ExceptionMessages::notAnArrayTypeArgumentOrValue(argumentIndex), isolate); |
| return Vector<RefPtr<T> >(); |
| } |
| return toRefPtrNativeArrayUnchecked<T, V8T>(v8Value, length, isolate, success); |
| } |
| |
| template <class T, class V8T> |
| Vector<RefPtr<T> > toRefPtrNativeArray(v8::Handle<v8::Value> value, const String& propertyName, v8::Isolate* isolate, bool* success = 0) |
| { |
| if (success) |
| *success = true; |
| |
| v8::Local<v8::Value> v8Value(v8::Local<v8::Value>::New(isolate, value)); |
| uint32_t length = 0; |
| if (value->IsArray()) { |
| length = v8::Local<v8::Array>::Cast(v8Value)->Length(); |
| } else if (toV8Sequence(value, length, isolate).IsEmpty()) { |
| throwTypeError(ExceptionMessages::notASequenceTypeProperty(propertyName), isolate); |
| return Vector<RefPtr<T> >(); |
| } |
| return toRefPtrNativeArrayUnchecked<T, V8T>(v8Value, length, isolate, success); |
| } |
| |
| template <class T, class V8T> |
| WillBeHeapVector<RefPtrWillBeMember<T> > toRefPtrWillBeMemberNativeArray(v8::Handle<v8::Value> value, int argumentIndex, v8::Isolate* isolate, bool* success = 0) |
| { |
| if (success) |
| *success = true; |
| |
| v8::Local<v8::Value> v8Value(v8::Local<v8::Value>::New(isolate, value)); |
| uint32_t length = 0; |
| if (value->IsArray()) { |
| length = v8::Local<v8::Array>::Cast(v8Value)->Length(); |
| } else if (toV8Sequence(value, length, isolate).IsEmpty()) { |
| throwTypeError(ExceptionMessages::notAnArrayTypeArgumentOrValue(argumentIndex), isolate); |
| return WillBeHeapVector<RefPtrWillBeMember<T> >(); |
| } |
| |
| WillBeHeapVector<RefPtrWillBeMember<T> > result; |
| result.reserveInitialCapacity(length); |
| v8::Local<v8::Object> object = v8::Local<v8::Object>::Cast(v8Value); |
| for (uint32_t i = 0; i < length; ++i) { |
| v8::Handle<v8::Value> element = object->Get(i); |
| if (V8T::hasInstance(element, isolate)) { |
| v8::Handle<v8::Object> elementObject = v8::Handle<v8::Object>::Cast(element); |
| result.uncheckedAppend(V8T::toNative(elementObject)); |
| } else { |
| if (success) |
| *success = false; |
| throwTypeError("Invalid Array element type", isolate); |
| return WillBeHeapVector<RefPtrWillBeMember<T> >(); |
| } |
| } |
| return result; |
| } |
| |
| // Converts a JavaScript value to an array as per the Web IDL specification: |
| // http://www.w3.org/TR/2012/CR-WebIDL-20120419/#es-array |
| template <class T> |
| Vector<T> toNativeArray(v8::Handle<v8::Value> value, int argumentIndex, v8::Isolate* isolate) |
| { |
| v8::Local<v8::Value> v8Value(v8::Local<v8::Value>::New(isolate, value)); |
| uint32_t length = 0; |
| if (value->IsArray()) { |
| length = v8::Local<v8::Array>::Cast(v8Value)->Length(); |
| } else if (toV8Sequence(value, length, isolate).IsEmpty()) { |
| throwTypeError(ExceptionMessages::notAnArrayTypeArgumentOrValue(argumentIndex), isolate); |
| return Vector<T>(); |
| } |
| |
| Vector<T> result; |
| result.reserveInitialCapacity(length); |
| typedef NativeValueTraits<T> TraitsType; |
| v8::Local<v8::Object> object = v8::Local<v8::Object>::Cast(v8Value); |
| for (uint32_t i = 0; i < length; ++i) |
| result.uncheckedAppend(TraitsType::nativeValue(object->Get(i), isolate)); |
| return result; |
| } |
| |
| template <class T> |
| Vector<T> toNativeArguments(const v8::FunctionCallbackInfo<v8::Value>& info, int startIndex) |
| { |
| ASSERT(startIndex <= info.Length()); |
| Vector<T> result; |
| typedef NativeValueTraits<T> TraitsType; |
| int length = info.Length(); |
| result.reserveInitialCapacity(length); |
| for (int i = startIndex; i < length; ++i) |
| result.uncheckedAppend(TraitsType::nativeValue(info[i], info.GetIsolate())); |
| return result; |
| } |
| |
| // Validates that the passed object is a sequence type per WebIDL spec |
| // http://www.w3.org/TR/2012/CR-WebIDL-20120419/#es-sequence |
| inline v8::Handle<v8::Value> toV8Sequence(v8::Handle<v8::Value> value, uint32_t& length, v8::Isolate* isolate) |
| { |
| // Attempt converting to a sequence if the value is not already an array but is |
| // any kind of object except for a native Date object or a native RegExp object. |
| ASSERT(!value->IsArray()); |
| // FIXME: Do we really need to special case Date and RegExp object? |
| // https://www.w3.org/Bugs/Public/show_bug.cgi?id=22806 |
| if (!value->IsObject() || value->IsDate() || value->IsRegExp()) { |
| // The caller is responsible for reporting a TypeError. |
| return v8Undefined(); |
| } |
| |
| v8::Local<v8::Value> v8Value(v8::Local<v8::Value>::New(isolate, value)); |
| v8::Local<v8::Object> object = v8::Local<v8::Object>::Cast(v8Value); |
| v8::Local<v8::String> lengthSymbol = v8AtomicString(isolate, "length"); |
| |
| // FIXME: The specification states that the length property should be used as fallback, if value |
| // is not a platform object that supports indexed properties. If it supports indexed properties, |
| // length should actually be one greater than value’s maximum indexed property index. |
| TONATIVE_EXCEPTION(v8::Local<v8::Value>, lengthValue, object->Get(lengthSymbol)); |
| |
| if (lengthValue->IsUndefined() || lengthValue->IsNull()) { |
| // The caller is responsible for reporting a TypeError. |
| return v8Undefined(); |
| } |
| |
| TONATIVE_EXCEPTION(uint32_t, sequenceLength, lengthValue->Int32Value()); |
| length = sequenceLength; |
| return v8Value; |
| } |
| |
| v8::Isolate* toIsolate(ExecutionContext*); |
| v8::Isolate* toIsolate(LocalFrame*); |
| |
| LocalDOMWindow* toDOMWindow(v8::Handle<v8::Value>, v8::Isolate*); |
| LocalDOMWindow* toDOMWindow(v8::Handle<v8::Context>); |
| LocalDOMWindow* enteredDOMWindow(v8::Isolate*); |
| LocalDOMWindow* currentDOMWindow(v8::Isolate*); |
| LocalDOMWindow* callingDOMWindow(v8::Isolate*); |
| ExecutionContext* toExecutionContext(v8::Handle<v8::Context>); |
| ExecutionContext* currentExecutionContext(v8::Isolate*); |
| ExecutionContext* callingExecutionContext(v8::Isolate*); |
| |
| // Returns a V8 context associated with a ExecutionContext and a DOMWrapperWorld. |
| // This method returns an empty context if there is no frame or the frame is already detached. |
| v8::Local<v8::Context> toV8Context(ExecutionContext*, DOMWrapperWorld&); |
| // Returns a V8 context associated with a LocalFrame and a DOMWrapperWorld. |
| // This method returns an empty context if the frame is already detached. |
| v8::Local<v8::Context> toV8Context(LocalFrame*, DOMWrapperWorld&); |
| |
| // Returns the frame object of the window object associated with |
| // a context, if the window is currently being displayed in the LocalFrame. |
| LocalFrame* toFrameIfNotDetached(v8::Handle<v8::Context>); |
| |
| // If the current context causes out of memory, JavaScript setting |
| // is disabled and it returns true. |
| bool handleOutOfMemory(); |
| v8::Local<v8::Value> handleMaxRecursionDepthExceeded(v8::Isolate*); |
| void crashIfV8IsDead(); |
| |
| inline bool isUndefinedOrNull(v8::Handle<v8::Value> value) |
| { |
| return value->IsNull() || value->IsUndefined(); |
| } |
| v8::Handle<v8::Function> getBoundFunction(v8::Handle<v8::Function>); |
| |
| // Attaches |environment| to |function| and returns it. |
| inline v8::Local<v8::Function> createClosure(v8::FunctionCallback function, v8::Handle<v8::Value> environment, v8::Isolate* isolate) |
| { |
| return v8::Function::New(isolate, function, environment); |
| } |
| |
| // FIXME: This will be soon embedded in the generated code. |
| template<class Collection> static void indexedPropertyEnumerator(const v8::PropertyCallbackInfo<v8::Array>& info) |
| { |
| Collection* collection = reinterpret_cast<Collection*>(info.Holder()->GetAlignedPointerFromInternalField(v8DOMWrapperObjectIndex)); |
| int length = collection->length(); |
| v8::Handle<v8::Array> properties = v8::Array::New(info.GetIsolate(), length); |
| for (int i = 0; i < length; ++i) { |
| // FIXME: Do we need to check that the item function returns a non-null value for this index? |
| v8::Handle<v8::Integer> integer = v8::Integer::New(info.GetIsolate(), i); |
| properties->Set(integer, integer); |
| } |
| v8SetReturnValue(info, properties); |
| } |
| |
| // These methods store hidden values into an array that is stored in the internal field of a DOM wrapper. |
| void addHiddenValueToArray(v8::Handle<v8::Object>, v8::Local<v8::Value>, int cacheIndex, v8::Isolate*); |
| void removeHiddenValueFromArray(v8::Handle<v8::Object>, v8::Local<v8::Value>, int cacheIndex, v8::Isolate*); |
| void moveEventListenerToNewWrapper(v8::Handle<v8::Object>, EventListener* oldValue, v8::Local<v8::Value> newValue, int cacheIndex, v8::Isolate*); |
| |
| PassRefPtr<JSONValue> v8ToJSONValue(v8::Isolate*, v8::Handle<v8::Value>, int); |
| |
| // Converts a DOM object to a v8 value. |
| // This is a no-inline version of toV8(). If you want to call toV8() |
| // without creating #include cycles, you can use this function instead. |
| // Each specialized implementation will be generated. |
| template<typename T> |
| v8::Handle<v8::Value> toV8NoInline(T* impl, v8::Handle<v8::Object> creationContext, v8::Isolate*); |
| |
| // ToV8Value<U, Context> is a class that converts a C++ object to a |
| // v8 value. U has to be a class having a static method getCreationContext |
| // which returns an object created from a target context. |
| template<typename U, typename Context> |
| class ToV8Value { |
| public: |
| template<typename T> |
| static v8::Handle<v8::Value> toV8Value(const T& value, Context context, v8::Isolate* isolate) |
| { |
| // Default implementaion: for types that don't need the context. |
| return V8ValueTraits<T>::toV8Value(value, context, isolate); |
| } |
| |
| // Pointer specializations. |
| template<typename T> |
| static v8::Handle<v8::Value> toV8Value(T* const& value, Context context, v8::Isolate* isolate) |
| { |
| return toV8NoInline(value, context, isolate); |
| } |
| template<typename T> |
| static v8::Handle<v8::Value> toV8Value(const RefPtr<T>& value, Context context, v8::Isolate* isolate) |
| { |
| return toV8Value(value.get(), context, isolate); |
| } |
| template<typename T> |
| static v8::Handle<v8::Value> toV8Value(const PassRefPtr<T>& value, Context context, v8::Isolate* isolate) |
| { |
| return toV8Value(value.get(), context, isolate); |
| } |
| template<typename T> |
| static v8::Handle<v8::Value> toV8Value(const OwnPtr<T>& value, Context context, v8::Isolate* isolate) |
| { |
| return toV8Value(value.get(), context, isolate); |
| } |
| template<typename T> |
| static v8::Handle<v8::Value> toV8Value(const PassOwnPtr<T>& value, Context context, v8::Isolate* isolate) |
| { |
| return toV8Value(value.get(), context, isolate); |
| } |
| template<typename T> |
| static v8::Handle<v8::Value> toV8Value(const RawPtr<T>& value, Context context, v8::Isolate* isolate) |
| { |
| return toV8Value(value.get(), context, isolate); |
| } |
| |
| // const char* should use V8ValueTraits. |
| static v8::Handle<v8::Value> toV8Value(const char* const& value, Context context, v8::Isolate* isolate) |
| { |
| return V8ValueTraits<const char*>::toV8Value(value, context, isolate); |
| } |
| |
| template<typename T, size_t inlineCapacity> |
| static v8::Handle<v8::Value> toV8Value(const Vector<T, inlineCapacity>& value, Context context, v8::Isolate* isolate) |
| { |
| return v8ArrayNoInline(value, context, isolate); |
| } |
| |
| template<typename T, size_t inlineCapacity> |
| static v8::Handle<v8::Value> toV8Value(const HeapVector<T, inlineCapacity>& value, Context context, v8::Isolate* isolate) |
| { |
| return v8ArrayNoInline(value, context, isolate); |
| } |
| |
| template<typename T, size_t inlineCapacity> |
| static v8::Handle<v8::Value> toV8Value(const PersistentHeapVector<T, inlineCapacity>& value, Context context, v8::Isolate* isolate) |
| { |
| return v8ArrayNoInline(static_cast<HeapVector<T, inlineCapacity> >(value), context, isolate); |
| } |
| }; |
| |
| // Result values for platform object 'deleter' methods, |
| // http://www.w3.org/TR/WebIDL/#delete |
| enum DeleteResult { |
| DeleteSuccess, |
| DeleteReject, |
| DeleteUnknownProperty |
| }; |
| |
| class V8IsolateInterruptor : public ThreadState::Interruptor { |
| public: |
| explicit V8IsolateInterruptor(v8::Isolate* isolate) : m_isolate(isolate) { } |
| |
| static void onInterruptCallback(v8::Isolate* isolate, void* data) |
| { |
| reinterpret_cast<V8IsolateInterruptor*>(data)->onInterrupted(); |
| } |
| |
| virtual void requestInterrupt() OVERRIDE |
| { |
| m_isolate->RequestInterrupt(&onInterruptCallback, this); |
| } |
| |
| virtual void clearInterrupt() OVERRIDE |
| { |
| m_isolate->ClearInterrupt(); |
| } |
| |
| private: |
| v8::Isolate* m_isolate; |
| }; |
| |
| class V8TestingScope { |
| public: |
| explicit V8TestingScope(v8::Isolate*); |
| ScriptState* scriptState() const; |
| v8::Isolate* isolate() const; |
| ~V8TestingScope(); |
| |
| private: |
| v8::HandleScope m_handleScope; |
| v8::Context::Scope m_contextScope; |
| RefPtr<ScriptState> m_scriptState; |
| }; |
| |
| void GetDevToolsFunctionInfo(v8::Handle<v8::Function>, v8::Isolate*, int& scriptId, String& resourceName, int& lineNumber); |
| PassRefPtr<TraceEvent::ConvertableToTraceFormat> devToolsTraceEventData(ExecutionContext*, v8::Handle<v8::Function>, v8::Isolate*); |
| |
| class V8RethrowTryCatchScope FINAL { |
| public: |
| explicit V8RethrowTryCatchScope(v8::TryCatch& block) : m_block(block) { } |
| ~V8RethrowTryCatchScope() |
| { |
| // ReThrow() is a no-op if no exception has been caught, so always call. |
| m_block.ReThrow(); |
| } |
| |
| private: |
| v8::TryCatch& m_block; |
| }; |
| |
| class V8ResetTryCatchScope FINAL { |
| public: |
| explicit V8ResetTryCatchScope(v8::TryCatch& block) : m_block(block) { } |
| ~V8ResetTryCatchScope() |
| { |
| m_block.Reset(); |
| } |
| |
| private: |
| v8::TryCatch& m_block; |
| }; |
| |
| } // namespace WebCore |
| |
| #endif // V8Binding_h |