| /* |
| * Copyright (C) 2006, 2007, 2008, 2009 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: |
| * |
| * * 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. |
| */ |
| |
| #include "config.h" |
| #include "bindings/core/v8/V8Binding.h" |
| |
| #include "bindings/core/v8/ScriptController.h" |
| #include "bindings/core/v8/V8AbstractEventListener.h" |
| #include "bindings/core/v8/V8BindingMacros.h" |
| #include "bindings/core/v8/V8Element.h" |
| #include "bindings/core/v8/V8NodeFilter.h" |
| #include "bindings/core/v8/V8NodeFilterCondition.h" |
| #include "bindings/core/v8/V8ObjectConstructor.h" |
| #include "bindings/core/v8/V8Window.h" |
| #include "bindings/core/v8/V8WorkerGlobalScope.h" |
| #include "bindings/core/v8/V8XPathNSResolver.h" |
| #include "bindings/core/v8/WindowProxy.h" |
| #include "bindings/core/v8/WorkerScriptController.h" |
| #include "bindings/core/v8/custom/V8CustomXPathNSResolver.h" |
| #include "core/dom/Document.h" |
| #include "core/dom/Element.h" |
| #include "core/dom/NodeFilter.h" |
| #include "core/dom/QualifiedName.h" |
| #include "core/frame/LocalFrame.h" |
| #include "core/frame/Settings.h" |
| #include "core/inspector/BindingVisitors.h" |
| #include "core/inspector/InspectorTraceEvents.h" |
| #include "core/loader/FrameLoader.h" |
| #include "core/loader/FrameLoaderClient.h" |
| #include "core/workers/WorkerGlobalScope.h" |
| #include "core/xml/XPathNSResolver.h" |
| #include "platform/EventTracer.h" |
| #include "platform/JSONValues.h" |
| #include "wtf/ArrayBufferContents.h" |
| #include "wtf/MainThread.h" |
| #include "wtf/MathExtras.h" |
| #include "wtf/StdLibExtras.h" |
| #include "wtf/Threading.h" |
| #include "wtf/text/AtomicString.h" |
| #include "wtf/text/CString.h" |
| #include "wtf/text/StringBuffer.h" |
| #include "wtf/text/StringHash.h" |
| #include "wtf/text/WTFString.h" |
| #include "wtf/unicode/CharacterNames.h" |
| #include "wtf/unicode/Unicode.h" |
| |
| namespace blink { |
| |
| void setArityTypeError(ExceptionState& exceptionState, const char* valid, unsigned provided) |
| { |
| exceptionState.throwTypeError(ExceptionMessages::invalidArity(valid, provided)); |
| } |
| |
| v8::Local<v8::Value> createMinimumArityTypeErrorForMethod(v8::Isolate* isolate, const char* method, const char* type, unsigned expected, unsigned provided) |
| { |
| return V8ThrowException::createTypeError(isolate, ExceptionMessages::failedToExecute(method, type, ExceptionMessages::notEnoughArguments(expected, provided))); |
| } |
| |
| v8::Local<v8::Value> createMinimumArityTypeErrorForConstructor(v8::Isolate* isolate, const char* type, unsigned expected, unsigned provided) |
| { |
| return V8ThrowException::createTypeError(isolate, ExceptionMessages::failedToConstruct(type, ExceptionMessages::notEnoughArguments(expected, provided))); |
| } |
| |
| void setMinimumArityTypeError(ExceptionState& exceptionState, unsigned expected, unsigned provided) |
| { |
| exceptionState.throwTypeError(ExceptionMessages::notEnoughArguments(expected, provided)); |
| } |
| |
| class ArrayBufferAllocator : public v8::ArrayBuffer::Allocator { |
| virtual void* Allocate(size_t size) override |
| { |
| void* data; |
| WTF::ArrayBufferContents::allocateMemory(size, WTF::ArrayBufferContents::ZeroInitialize, data); |
| return data; |
| } |
| |
| virtual void* AllocateUninitialized(size_t size) override |
| { |
| void* data; |
| WTF::ArrayBufferContents::allocateMemory(size, WTF::ArrayBufferContents::DontInitialize, data); |
| return data; |
| } |
| |
| virtual void Free(void* data, size_t size) override |
| { |
| WTF::ArrayBufferContents::freeMemory(data, size); |
| } |
| }; |
| |
| v8::ArrayBuffer::Allocator* v8ArrayBufferAllocator() |
| { |
| DEFINE_STATIC_LOCAL(ArrayBufferAllocator, arrayBufferAllocator, ()); |
| return &arrayBufferAllocator; |
| } |
| |
| PassRefPtrWillBeRawPtr<NodeFilter> toNodeFilter(v8::Handle<v8::Value> callback, v8::Handle<v8::Object> creationContext, ScriptState* scriptState) |
| { |
| if (callback->IsNull()) |
| return nullptr; |
| RefPtrWillBeRawPtr<NodeFilter> filter = NodeFilter::create(); |
| |
| v8::Handle<v8::Object> filterWrapper = toV8(filter, creationContext, scriptState->isolate()).As<v8::Object>(); |
| |
| RefPtrWillBeRawPtr<NodeFilterCondition> condition = V8NodeFilterCondition::create(callback, filterWrapper, scriptState); |
| filter->setCondition(condition.release()); |
| |
| return filter.release(); |
| } |
| |
| const int32_t kMaxInt32 = 0x7fffffff; |
| const int32_t kMinInt32 = -kMaxInt32 - 1; |
| const uint32_t kMaxUInt32 = 0xffffffff; |
| const int64_t kJSMaxInteger = 0x20000000000000LL - 1; // 2^53 - 1, maximum uniquely representable integer in ECMAScript. |
| |
| static double enforceRange(double x, double minimum, double maximum, const char* typeName, ExceptionState& exceptionState) |
| { |
| if (std::isnan(x) || std::isinf(x)) { |
| exceptionState.throwTypeError("Value is" + String(std::isinf(x) ? " infinite and" : "") + " not of type '" + String(typeName) + "'."); |
| return 0; |
| } |
| x = trunc(x); |
| if (x < minimum || x > maximum) { |
| exceptionState.throwTypeError("Value is outside the '" + String(typeName) + "' value range."); |
| return 0; |
| } |
| return x; |
| } |
| |
| template <typename T> |
| struct IntTypeLimits { |
| }; |
| |
| template <> |
| struct IntTypeLimits<int8_t> { |
| static const int8_t minValue = -128; |
| static const int8_t maxValue = 127; |
| static const unsigned numberOfValues = 256; // 2^8 |
| }; |
| |
| template <> |
| struct IntTypeLimits<uint8_t> { |
| static const uint8_t maxValue = 255; |
| static const unsigned numberOfValues = 256; // 2^8 |
| }; |
| |
| template <> |
| struct IntTypeLimits<int16_t> { |
| static const short minValue = -32768; |
| static const short maxValue = 32767; |
| static const unsigned numberOfValues = 65536; // 2^16 |
| }; |
| |
| template <> |
| struct IntTypeLimits<uint16_t> { |
| static const unsigned short maxValue = 65535; |
| static const unsigned numberOfValues = 65536; // 2^16 |
| }; |
| |
| template <typename T> |
| static inline T toSmallerInt(v8::Handle<v8::Value> value, IntegerConversionConfiguration configuration, const char* typeName, ExceptionState& exceptionState) |
| { |
| typedef IntTypeLimits<T> LimitsTrait; |
| |
| // Fast case. The value is already a 32-bit integer in the right range. |
| if (value->IsInt32()) { |
| int32_t result = value->Int32Value(); |
| if (result >= LimitsTrait::minValue && result <= LimitsTrait::maxValue) |
| return static_cast<T>(result); |
| if (configuration == EnforceRange) { |
| exceptionState.throwTypeError("Value is outside the '" + String(typeName) + "' value range."); |
| return 0; |
| } |
| if (configuration == Clamp) |
| return clampTo<T>(result); |
| result %= LimitsTrait::numberOfValues; |
| return static_cast<T>(result > LimitsTrait::maxValue ? result - LimitsTrait::numberOfValues : result); |
| } |
| |
| // Can the value be converted to a number? |
| v8::TryCatch block; |
| v8::Local<v8::Number> numberObject(value->ToNumber()); |
| if (block.HasCaught()) { |
| exceptionState.rethrowV8Exception(block.Exception()); |
| return 0; |
| } |
| |
| ASSERT(!numberObject.IsEmpty()); |
| |
| if (configuration == EnforceRange) |
| return enforceRange(numberObject->Value(), LimitsTrait::minValue, LimitsTrait::maxValue, typeName, exceptionState); |
| |
| double numberValue = numberObject->Value(); |
| if (std::isnan(numberValue) || !numberValue) |
| return 0; |
| |
| if (configuration == Clamp) |
| return clampTo<T>(numberValue); |
| |
| if (std::isinf(numberValue)) |
| return 0; |
| |
| numberValue = numberValue < 0 ? -floor(fabs(numberValue)) : floor(fabs(numberValue)); |
| numberValue = fmod(numberValue, LimitsTrait::numberOfValues); |
| |
| return static_cast<T>(numberValue > LimitsTrait::maxValue ? numberValue - LimitsTrait::numberOfValues : numberValue); |
| } |
| |
| template <typename T> |
| static inline T toSmallerUInt(v8::Handle<v8::Value> value, IntegerConversionConfiguration configuration, const char* typeName, ExceptionState& exceptionState) |
| { |
| typedef IntTypeLimits<T> LimitsTrait; |
| |
| // Fast case. The value is a 32-bit signed integer - possibly positive? |
| if (value->IsInt32()) { |
| int32_t result = value->Int32Value(); |
| if (result >= 0 && result <= LimitsTrait::maxValue) |
| return static_cast<T>(result); |
| if (configuration == EnforceRange) { |
| exceptionState.throwTypeError("Value is outside the '" + String(typeName) + "' value range."); |
| return 0; |
| } |
| if (configuration == Clamp) |
| return clampTo<T>(result); |
| return static_cast<T>(result); |
| } |
| |
| // Can the value be converted to a number? |
| v8::TryCatch block; |
| v8::Local<v8::Number> numberObject(value->ToNumber()); |
| if (block.HasCaught()) { |
| exceptionState.rethrowV8Exception(block.Exception()); |
| return 0; |
| } |
| |
| ASSERT(!numberObject.IsEmpty()); |
| |
| if (configuration == EnforceRange) |
| return enforceRange(numberObject->Value(), 0, LimitsTrait::maxValue, typeName, exceptionState); |
| |
| double numberValue = numberObject->Value(); |
| |
| if (std::isnan(numberValue) || !numberValue) |
| return 0; |
| |
| if (configuration == Clamp) |
| return clampTo<T>(numberValue); |
| |
| if (std::isinf(numberValue)) |
| return 0; |
| |
| numberValue = numberValue < 0 ? -floor(fabs(numberValue)) : floor(fabs(numberValue)); |
| return static_cast<T>(fmod(numberValue, LimitsTrait::numberOfValues)); |
| } |
| |
| int8_t toInt8(v8::Handle<v8::Value> value, IntegerConversionConfiguration configuration, ExceptionState& exceptionState) |
| { |
| return toSmallerInt<int8_t>(value, configuration, "byte", exceptionState); |
| } |
| |
| int8_t toInt8(v8::Handle<v8::Value> value) |
| { |
| NonThrowableExceptionState exceptionState; |
| return toInt8(value, NormalConversion, exceptionState); |
| } |
| |
| uint8_t toUInt8(v8::Handle<v8::Value> value, IntegerConversionConfiguration configuration, ExceptionState& exceptionState) |
| { |
| return toSmallerUInt<uint8_t>(value, configuration, "octet", exceptionState); |
| } |
| |
| uint8_t toUInt8(v8::Handle<v8::Value> value) |
| { |
| NonThrowableExceptionState exceptionState; |
| return toUInt8(value, NormalConversion, exceptionState); |
| } |
| |
| int16_t toInt16(v8::Handle<v8::Value> value, IntegerConversionConfiguration configuration, ExceptionState& exceptionState) |
| { |
| return toSmallerInt<int16_t>(value, configuration, "short", exceptionState); |
| } |
| |
| int16_t toInt16(v8::Handle<v8::Value> value) |
| { |
| NonThrowableExceptionState exceptionState; |
| return toInt16(value, NormalConversion, exceptionState); |
| } |
| |
| uint16_t toUInt16(v8::Handle<v8::Value> value, IntegerConversionConfiguration configuration, ExceptionState& exceptionState) |
| { |
| return toSmallerUInt<uint16_t>(value, configuration, "unsigned short", exceptionState); |
| } |
| |
| uint16_t toUInt16(v8::Handle<v8::Value> value) |
| { |
| NonThrowableExceptionState exceptionState; |
| return toUInt16(value, NormalConversion, exceptionState); |
| } |
| |
| int32_t toInt32(v8::Handle<v8::Value> value, IntegerConversionConfiguration configuration, ExceptionState& exceptionState) |
| { |
| // 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::TryCatch block; |
| v8::Local<v8::Number> numberObject(value->ToNumber()); |
| if (block.HasCaught()) { |
| exceptionState.rethrowV8Exception(block.Exception()); |
| return 0; |
| } |
| |
| ASSERT(!numberObject.IsEmpty()); |
| |
| if (configuration == EnforceRange) |
| return enforceRange(numberObject->Value(), kMinInt32, kMaxInt32, "long", exceptionState); |
| |
| double numberValue = numberObject->Value(); |
| |
| if (std::isnan(numberValue)) |
| return 0; |
| |
| if (configuration == Clamp) |
| return clampTo<int32_t>(numberValue); |
| |
| if (std::isinf(numberValue)) |
| return 0; |
| |
| return numberObject->Int32Value(); |
| } |
| |
| int32_t toInt32(v8::Handle<v8::Value> value) |
| { |
| NonThrowableExceptionState exceptionState; |
| return toInt32(value, NormalConversion, exceptionState); |
| } |
| |
| uint32_t toUInt32(v8::Handle<v8::Value> value, IntegerConversionConfiguration configuration, ExceptionState& exceptionState) |
| { |
| // Fast case. The value is already a 32-bit unsigned integer. |
| if (value->IsUint32()) |
| return value->Uint32Value(); |
| |
| // Fast case. The value is a 32-bit signed integer - possibly positive? |
| if (value->IsInt32()) { |
| int32_t result = value->Int32Value(); |
| if (result >= 0) |
| return result; |
| if (configuration == EnforceRange) { |
| exceptionState.throwTypeError("Value is outside the 'unsigned long' value range."); |
| return 0; |
| } |
| if (configuration == Clamp) |
| return clampTo<uint32_t>(result); |
| return result; |
| } |
| |
| // Can the value be converted to a number? |
| v8::TryCatch block; |
| v8::Local<v8::Number> numberObject(value->ToNumber()); |
| if (block.HasCaught()) { |
| exceptionState.rethrowV8Exception(block.Exception()); |
| return 0; |
| } |
| |
| ASSERT(!numberObject.IsEmpty()); |
| |
| if (configuration == EnforceRange) |
| return enforceRange(numberObject->Value(), 0, kMaxUInt32, "unsigned long", exceptionState); |
| |
| double numberValue = numberObject->Value(); |
| |
| if (std::isnan(numberValue)) |
| return 0; |
| |
| if (configuration == Clamp) |
| return clampTo<uint32_t>(numberValue); |
| |
| if (std::isinf(numberValue)) |
| return 0; |
| |
| return numberObject->Uint32Value(); |
| } |
| |
| uint32_t toUInt32(v8::Handle<v8::Value> value) |
| { |
| NonThrowableExceptionState exceptionState; |
| return toUInt32(value, NormalConversion, exceptionState); |
| } |
| |
| int64_t toInt64(v8::Handle<v8::Value> value, IntegerConversionConfiguration configuration, ExceptionState& exceptionState) |
| { |
| // Clamping not supported for int64_t/long long int. See Source/wtf/MathExtras.h. |
| ASSERT(configuration != Clamp); |
| |
| // Fast case. The value is a 32-bit integer. |
| if (value->IsInt32()) |
| return value->Int32Value(); |
| |
| // Can the value be converted to a number? |
| v8::TryCatch block; |
| v8::Local<v8::Number> numberObject(value->ToNumber()); |
| if (block.HasCaught()) { |
| exceptionState.rethrowV8Exception(block.Exception()); |
| return 0; |
| } |
| |
| ASSERT(!numberObject.IsEmpty()); |
| |
| double numberValue = numberObject->Value(); |
| |
| if (configuration == EnforceRange) |
| return enforceRange(numberValue, -kJSMaxInteger, kJSMaxInteger, "long long", exceptionState); |
| |
| if (std::isnan(numberValue) || std::isinf(numberValue)) |
| return 0; |
| |
| // NaNs and +/-Infinity should be 0, otherwise modulo 2^64. |
| unsigned long long integer; |
| doubleToInteger(numberValue, integer); |
| return integer; |
| } |
| |
| int64_t toInt64(v8::Handle<v8::Value> value) |
| { |
| NonThrowableExceptionState exceptionState; |
| return toInt64(value, NormalConversion, exceptionState); |
| } |
| |
| uint64_t toUInt64(v8::Handle<v8::Value> value, IntegerConversionConfiguration configuration, ExceptionState& exceptionState) |
| { |
| // Fast case. The value is a 32-bit unsigned integer. |
| if (value->IsUint32()) |
| return value->Uint32Value(); |
| |
| // Fast case. The value is a 32-bit integer. |
| if (value->IsInt32()) { |
| int32_t result = value->Int32Value(); |
| if (result >= 0) |
| return result; |
| if (configuration == EnforceRange) { |
| exceptionState.throwTypeError("Value is outside the 'unsigned long long' value range."); |
| return 0; |
| } |
| if (configuration == Clamp) |
| return clampTo<uint64_t>(result); |
| return result; |
| } |
| |
| // Can the value be converted to a number? |
| v8::TryCatch block; |
| v8::Local<v8::Number> numberObject(value->ToNumber()); |
| if (block.HasCaught()) { |
| exceptionState.rethrowV8Exception(block.Exception()); |
| return 0; |
| } |
| |
| ASSERT(!numberObject.IsEmpty()); |
| |
| double numberValue = numberObject->Value(); |
| |
| if (configuration == EnforceRange) |
| return enforceRange(numberValue, 0, kJSMaxInteger, "unsigned long long", exceptionState); |
| |
| if (std::isnan(numberValue)) |
| return 0; |
| |
| if (configuration == Clamp) |
| return clampTo<uint64_t>(numberValue); |
| |
| if (std::isinf(numberValue)) |
| return 0; |
| |
| // NaNs and +/-Infinity should be 0, otherwise modulo 2^64. |
| unsigned long long integer; |
| doubleToInteger(numberValue, integer); |
| return integer; |
| } |
| |
| uint64_t toUInt64(v8::Handle<v8::Value> value) |
| { |
| NonThrowableExceptionState exceptionState; |
| return toUInt64(value, NormalConversion, exceptionState); |
| } |
| |
| float toFloat(v8::Handle<v8::Value> value, ExceptionState& exceptionState) |
| { |
| return static_cast<float>(toDouble(value, exceptionState)); |
| } |
| |
| double toDouble(v8::Handle<v8::Value> value, ExceptionState& exceptionState) |
| { |
| if (value->IsNumber()) |
| return value->NumberValue(); |
| |
| v8::TryCatch block; |
| v8::Local<v8::Number> numberObject(value->ToNumber()); |
| if (block.HasCaught()) { |
| exceptionState.rethrowV8Exception(block.Exception()); |
| return 0; |
| } |
| |
| return numberObject->NumberValue(); |
| } |
| |
| String toByteString(v8::Handle<v8::Value> value, ExceptionState& exceptionState) |
| { |
| // Handle null default value. |
| if (value.IsEmpty()) |
| return String(); |
| |
| // From the Web IDL spec: http://heycam.github.io/webidl/#es-ByteString |
| if (value.IsEmpty()) |
| return String(); |
| |
| // 1. Let x be ToString(v) |
| v8::TryCatch block; |
| v8::Local<v8::String> stringObject(value->ToString()); |
| if (block.HasCaught()) { |
| exceptionState.rethrowV8Exception(block.Exception()); |
| return String(); |
| } |
| |
| String x = toCoreString(stringObject); |
| |
| // 2. If the value of any element of x is greater than 255, then throw a TypeError. |
| if (!x.containsOnlyLatin1()) { |
| exceptionState.throwTypeError("Value is not a valid ByteString."); |
| return String(); |
| } |
| |
| // 3. Return an IDL ByteString value whose length is the length of x, and where the |
| // value of each element is the value of the corresponding element of x. |
| // Blink: A ByteString is simply a String with a range constrained per the above, so |
| // this is the identity operation. |
| return x; |
| } |
| |
| static bool hasUnmatchedSurrogates(const String& string) |
| { |
| // By definition, 8-bit strings are confined to the Latin-1 code page and |
| // have no surrogates, matched or otherwise. |
| if (string.is8Bit()) |
| return false; |
| |
| const UChar* characters = string.characters16(); |
| const unsigned length = string.length(); |
| |
| for (unsigned i = 0; i < length; ++i) { |
| UChar c = characters[i]; |
| if (U16_IS_SINGLE(c)) |
| continue; |
| if (U16_IS_TRAIL(c)) |
| return true; |
| ASSERT(U16_IS_LEAD(c)); |
| if (i == length - 1) |
| return true; |
| UChar d = characters[i + 1]; |
| if (!U16_IS_TRAIL(d)) |
| return true; |
| ++i; |
| } |
| return false; |
| } |
| |
| // Replace unmatched surrogates with REPLACEMENT CHARACTER U+FFFD. |
| static String replaceUnmatchedSurrogates(const String& string) |
| { |
| // This roughly implements http://heycam.github.io/webidl/#dfn-obtain-unicode |
| // but since Blink strings are 16-bits internally, the output is simply |
| // re-encoded to UTF-16. |
| |
| // The concept of surrogate pairs is explained at: |
| // http://www.unicode.org/versions/Unicode6.2.0/ch03.pdf#G2630 |
| |
| // Blink-specific optimization to avoid making an unnecessary copy. |
| if (!hasUnmatchedSurrogates(string)) |
| return string; |
| ASSERT(!string.is8Bit()); |
| |
| // 1. Let S be the DOMString value. |
| const UChar* s = string.characters16(); |
| |
| // 2. Let n be the length of S. |
| const unsigned n = string.length(); |
| |
| // 3. Initialize i to 0. |
| unsigned i = 0; |
| |
| // 4. Initialize U to be an empty sequence of Unicode characters. |
| StringBuilder u; |
| u.reserveCapacity(n); |
| |
| // 5. While i < n: |
| while (i < n) { |
| // 1. Let c be the code unit in S at index i. |
| UChar c = s[i]; |
| // 2. Depending on the value of c: |
| if (U16_IS_SINGLE(c)) { |
| // c < 0xD800 or c > 0xDFFF |
| // Append to U the Unicode character with code point c. |
| u.append(c); |
| } else if (U16_IS_TRAIL(c)) { |
| // 0xDC00 <= c <= 0xDFFF |
| // Append to U a U+FFFD REPLACEMENT CHARACTER. |
| u.append(WTF::Unicode::replacementCharacter); |
| } else { |
| // 0xD800 <= c <= 0xDBFF |
| ASSERT(U16_IS_LEAD(c)); |
| if (i == n - 1) { |
| // 1. If i = n−1, then append to U a U+FFFD REPLACEMENT CHARACTER. |
| u.append(WTF::Unicode::replacementCharacter); |
| } else { |
| // 2. Otherwise, i < n−1: |
| ASSERT(i < n - 1); |
| // ....1. Let d be the code unit in S at index i+1. |
| UChar d = s[i + 1]; |
| if (U16_IS_TRAIL(d)) { |
| // 2. If 0xDC00 <= d <= 0xDFFF, then: |
| // ..1. Let a be c & 0x3FF. |
| // ..2. Let b be d & 0x3FF. |
| // ..3. Append to U the Unicode character with code point 2^16+2^10*a+b. |
| u.append(U16_GET_SUPPLEMENTARY(c, d)); |
| // Blink: This is equivalent to u.append(c); u.append(d); |
| ++i; |
| } else { |
| // 3. Otherwise, d < 0xDC00 or d > 0xDFFF. Append to U a U+FFFD REPLACEMENT CHARACTER. |
| u.append(WTF::Unicode::replacementCharacter); |
| } |
| } |
| } |
| // 3. Set i to i+1. |
| ++i; |
| } |
| |
| // 6. Return U. |
| ASSERT(u.length() == string.length()); |
| return u.toString(); |
| } |
| |
| String toUSVString(v8::Handle<v8::Value> value, ExceptionState& exceptionState) |
| { |
| // http://heycam.github.io/webidl/#es-USVString |
| if (value.IsEmpty()) |
| return String(); |
| |
| v8::TryCatch block; |
| v8::Local<v8::String> stringObject(value->ToString()); |
| if (block.HasCaught()) { |
| exceptionState.rethrowV8Exception(block.Exception()); |
| return String(); |
| } |
| |
| // USVString is identical to DOMString except that "convert a |
| // DOMString to a sequence of Unicode characters" is used subsequently |
| // when converting to an IDL value |
| String x = toCoreString(stringObject); |
| return replaceUnmatchedSurrogates(x); |
| } |
| |
| PassRefPtrWillBeRawPtr<XPathNSResolver> toXPathNSResolver(v8::Isolate* isolate, v8::Handle<v8::Value> value) |
| { |
| RefPtrWillBeRawPtr<XPathNSResolver> resolver = nullptr; |
| if (V8XPathNSResolver::hasInstance(value, isolate)) |
| resolver = V8XPathNSResolver::toImpl(v8::Handle<v8::Object>::Cast(value)); |
| else if (value->IsObject()) |
| resolver = V8CustomXPathNSResolver::create(value->ToObject(), isolate); |
| return resolver; |
| } |
| |
| LocalDOMWindow* toDOMWindow(v8::Handle<v8::Value> value, v8::Isolate* isolate) |
| { |
| if (value.IsEmpty() || !value->IsObject()) |
| return 0; |
| |
| v8::Handle<v8::Object> windowWrapper = V8Window::findInstanceInPrototypeChain(v8::Handle<v8::Object>::Cast(value), isolate); |
| if (!windowWrapper.IsEmpty()) |
| return V8Window::toImpl(windowWrapper); |
| return 0; |
| } |
| |
| LocalDOMWindow* toDOMWindow(v8::Handle<v8::Context> context) |
| { |
| if (context.IsEmpty()) |
| return 0; |
| return toDOMWindow(context->Global(), context->GetIsolate()); |
| } |
| |
| LocalDOMWindow* enteredDOMWindow(v8::Isolate* isolate) |
| { |
| LocalDOMWindow* window = toDOMWindow(isolate->GetEnteredContext()); |
| if (!window) { |
| // We don't always have an entered DOM window, for example during microtask callbacks from V8 |
| // (where the entered context may be the DOM-in-JS context). In that case, we fall back |
| // to the current context. |
| window = currentDOMWindow(isolate); |
| ASSERT(window); |
| } |
| return window; |
| } |
| |
| LocalDOMWindow* currentDOMWindow(v8::Isolate* isolate) |
| { |
| return toDOMWindow(isolate->GetCurrentContext()); |
| } |
| |
| LocalDOMWindow* callingDOMWindow(v8::Isolate* isolate) |
| { |
| v8::Handle<v8::Context> context = isolate->GetCallingContext(); |
| if (context.IsEmpty()) { |
| // Unfortunately, when processing script from a plug-in, we might not |
| // have a calling context. In those cases, we fall back to the |
| // entered context. |
| context = isolate->GetEnteredContext(); |
| } |
| return toDOMWindow(context); |
| } |
| |
| ExecutionContext* toExecutionContext(v8::Handle<v8::Context> context) |
| { |
| if (context.IsEmpty()) |
| return 0; |
| v8::Handle<v8::Object> global = context->Global(); |
| v8::Handle<v8::Object> windowWrapper = V8Window::findInstanceInPrototypeChain(global, context->GetIsolate()); |
| if (!windowWrapper.IsEmpty()) |
| return V8Window::toImpl(windowWrapper)->executionContext(); |
| v8::Handle<v8::Object> workerWrapper = V8WorkerGlobalScope::findInstanceInPrototypeChain(global, context->GetIsolate()); |
| if (!workerWrapper.IsEmpty()) |
| return V8WorkerGlobalScope::toImpl(workerWrapper)->executionContext(); |
| // FIXME: Is this line of code reachable? |
| return 0; |
| } |
| |
| ExecutionContext* currentExecutionContext(v8::Isolate* isolate) |
| { |
| return toExecutionContext(isolate->GetCurrentContext()); |
| } |
| |
| ExecutionContext* callingExecutionContext(v8::Isolate* isolate) |
| { |
| v8::Handle<v8::Context> context = isolate->GetCallingContext(); |
| if (context.IsEmpty()) { |
| // Unfortunately, when processing script from a plug-in, we might not |
| // have a calling context. In those cases, we fall back to the |
| // entered context. |
| context = isolate->GetEnteredContext(); |
| } |
| return toExecutionContext(context); |
| } |
| |
| LocalFrame* toFrameIfNotDetached(v8::Handle<v8::Context> context) |
| { |
| LocalDOMWindow* window = toDOMWindow(context); |
| if (window && window->isCurrentlyDisplayedInFrame()) |
| return window->frame(); |
| // We return 0 here because |context| is detached from the LocalFrame. If we |
| // did return |frame| we could get in trouble because the frame could be |
| // navigated to another security origin. |
| return 0; |
| } |
| |
| v8::Local<v8::Context> toV8Context(ExecutionContext* context, DOMWrapperWorld& world) |
| { |
| ASSERT(context); |
| if (context->isDocument()) { |
| if (LocalFrame* frame = toDocument(context)->frame()) |
| return frame->script().windowProxy(world)->context(); |
| } else if (context->isWorkerGlobalScope()) { |
| if (WorkerScriptController* script = toWorkerGlobalScope(context)->script()) |
| return script->context(); |
| } |
| return v8::Local<v8::Context>(); |
| } |
| |
| v8::Local<v8::Context> toV8Context(LocalFrame* frame, DOMWrapperWorld& world) |
| { |
| if (!frame) |
| return v8::Local<v8::Context>(); |
| v8::Local<v8::Context> context = frame->script().windowProxy(world)->context(); |
| if (context.IsEmpty()) |
| return v8::Local<v8::Context>(); |
| LocalFrame* attachedFrame = toFrameIfNotDetached(context); |
| return frame == attachedFrame ? context : v8::Local<v8::Context>(); |
| } |
| |
| void crashIfV8IsDead() |
| { |
| if (v8::V8::IsDead()) { |
| // FIXME: We temporarily deal with V8 internal error situations |
| // such as out-of-memory by crashing the renderer. |
| CRASH(); |
| } |
| } |
| |
| v8::Handle<v8::Function> getBoundFunction(v8::Handle<v8::Function> function) |
| { |
| v8::Handle<v8::Value> boundFunction = function->GetBoundFunction(); |
| return boundFunction->IsFunction() ? v8::Handle<v8::Function>::Cast(boundFunction) : function; |
| } |
| |
| void addHiddenValueToArray(v8::Isolate* isolate, v8::Handle<v8::Object> object, v8::Local<v8::Value> value, int arrayIndex) |
| { |
| v8::Local<v8::Value> arrayValue = object->GetInternalField(arrayIndex); |
| if (arrayValue->IsNull() || arrayValue->IsUndefined()) { |
| arrayValue = v8::Array::New(isolate); |
| object->SetInternalField(arrayIndex, arrayValue); |
| } |
| |
| v8::Local<v8::Array> array = v8::Local<v8::Array>::Cast(arrayValue); |
| array->Set(v8::Integer::New(isolate, array->Length()), value); |
| } |
| |
| void removeHiddenValueFromArray(v8::Isolate* isolate, v8::Handle<v8::Object> object, v8::Local<v8::Value> value, int arrayIndex) |
| { |
| v8::Local<v8::Value> arrayValue = object->GetInternalField(arrayIndex); |
| if (!arrayValue->IsArray()) |
| return; |
| v8::Local<v8::Array> array = v8::Local<v8::Array>::Cast(arrayValue); |
| for (int i = array->Length() - 1; i >= 0; --i) { |
| v8::Local<v8::Value> item = array->Get(v8::Integer::New(isolate, i)); |
| if (item->StrictEquals(value)) { |
| array->Delete(i); |
| return; |
| } |
| } |
| } |
| |
| void moveEventListenerToNewWrapper(v8::Isolate* isolate, v8::Handle<v8::Object> object, EventListener* oldValue, v8::Local<v8::Value> newValue, int arrayIndex) |
| { |
| if (oldValue) { |
| V8AbstractEventListener* oldListener = V8AbstractEventListener::cast(oldValue); |
| if (oldListener) { |
| v8::Local<v8::Object> oldListenerObject = oldListener->getExistingListenerObject(); |
| if (!oldListenerObject.IsEmpty()) |
| removeHiddenValueFromArray(isolate, object, oldListenerObject, arrayIndex); |
| } |
| } |
| // Non-callable input is treated as null and ignored |
| if (newValue->IsFunction()) |
| addHiddenValueToArray(isolate, object, newValue, arrayIndex); |
| } |
| |
| v8::Isolate* toIsolate(ExecutionContext* context) |
| { |
| if (context && context->isDocument()) |
| return V8PerIsolateData::mainThreadIsolate(); |
| return v8::Isolate::GetCurrent(); |
| } |
| |
| v8::Isolate* toIsolate(LocalFrame* frame) |
| { |
| ASSERT(frame); |
| return frame->script().isolate(); |
| } |
| |
| PassRefPtr<JSONValue> v8ToJSONValue(v8::Isolate* isolate, v8::Handle<v8::Value> value, int maxDepth) |
| { |
| if (value.IsEmpty()) { |
| ASSERT_NOT_REACHED(); |
| return nullptr; |
| } |
| |
| if (!maxDepth) |
| return nullptr; |
| maxDepth--; |
| |
| if (value->IsNull() || value->IsUndefined()) |
| return JSONValue::null(); |
| if (value->IsBoolean()) |
| return JSONBasicValue::create(value->BooleanValue()); |
| if (value->IsNumber()) |
| return JSONBasicValue::create(value->NumberValue()); |
| if (value->IsString()) |
| return JSONString::create(toCoreString(value.As<v8::String>())); |
| if (value->IsArray()) { |
| v8::Handle<v8::Array> array = v8::Handle<v8::Array>::Cast(value); |
| RefPtr<JSONArray> inspectorArray = JSONArray::create(); |
| uint32_t length = array->Length(); |
| for (uint32_t i = 0; i < length; i++) { |
| v8::Local<v8::Value> value = array->Get(v8::Int32::New(isolate, i)); |
| RefPtr<JSONValue> element = v8ToJSONValue(isolate, value, maxDepth); |
| if (!element) |
| return nullptr; |
| inspectorArray->pushValue(element); |
| } |
| return inspectorArray; |
| } |
| if (value->IsObject()) { |
| RefPtr<JSONObject> jsonObject = JSONObject::create(); |
| v8::Handle<v8::Object> object = v8::Handle<v8::Object>::Cast(value); |
| v8::Local<v8::Array> propertyNames = object->GetPropertyNames(); |
| uint32_t length = propertyNames->Length(); |
| for (uint32_t i = 0; i < length; i++) { |
| v8::Local<v8::Value> name = propertyNames->Get(v8::Int32::New(isolate, i)); |
| // FIXME(yurys): v8::Object should support GetOwnPropertyNames |
| if (name->IsString() && !object->HasRealNamedProperty(v8::Handle<v8::String>::Cast(name))) |
| continue; |
| RefPtr<JSONValue> propertyValue = v8ToJSONValue(isolate, object->Get(name), maxDepth); |
| if (!propertyValue) |
| return nullptr; |
| TOSTRING_DEFAULT(V8StringResource<TreatNullAsNullString>, nameString, name, nullptr); |
| jsonObject->setValue(nameString, propertyValue); |
| } |
| return jsonObject; |
| } |
| ASSERT_NOT_REACHED(); |
| return nullptr; |
| } |
| |
| V8TestingScope::V8TestingScope(v8::Isolate* isolate) |
| : m_handleScope(isolate) |
| , m_contextScope(v8::Context::New(isolate)) |
| // We reuse the main world since the main world is guaranteed to be registered to ScriptController. |
| , m_scriptState(ScriptStateForTesting::create(isolate->GetCurrentContext(), &DOMWrapperWorld::mainWorld())) |
| { |
| } |
| |
| V8TestingScope::~V8TestingScope() |
| { |
| m_scriptState->disposePerContextData(); |
| } |
| |
| ScriptState* V8TestingScope::scriptState() const |
| { |
| return m_scriptState.get(); |
| } |
| |
| v8::Isolate* V8TestingScope::isolate() const |
| { |
| return m_scriptState->isolate(); |
| } |
| |
| void GetDevToolsFunctionInfo(v8::Handle<v8::Function> function, v8::Isolate* isolate, int& scriptId, String& resourceName, int& lineNumber) |
| { |
| v8::Handle<v8::Function> originalFunction = getBoundFunction(function); |
| scriptId = originalFunction->ScriptId(); |
| v8::ScriptOrigin origin = originalFunction->GetScriptOrigin(); |
| if (!origin.ResourceName().IsEmpty()) { |
| V8StringResource<> stringResource(origin.ResourceName()); |
| stringResource.prepare(); |
| resourceName = stringResource; |
| lineNumber = originalFunction->GetScriptLineNumber() + 1; |
| } |
| if (resourceName.isEmpty()) { |
| resourceName = "undefined"; |
| lineNumber = 1; |
| } |
| } |
| |
| PassRefPtr<TraceEvent::ConvertableToTraceFormat> devToolsTraceEventData(v8::Isolate* isolate, ExecutionContext* context, v8::Handle<v8::Function> function) |
| { |
| int scriptId = 0; |
| String resourceName; |
| int lineNumber = 1; |
| GetDevToolsFunctionInfo(function, isolate, scriptId, resourceName, lineNumber); |
| return InspectorFunctionCallEvent::data(context, scriptId, resourceName, lineNumber); |
| } |
| |
| v8::Local<v8::Value> v8DoneIteratorResult(v8::Isolate* isolate) |
| { |
| v8::Local<v8::Object> result = v8::Object::New(isolate); |
| result->Set(v8String(isolate, "value"), v8::Undefined(isolate)); |
| result->Set(v8String(isolate, "done"), v8Boolean(true, isolate)); |
| return result; |
| } |
| |
| v8::Local<v8::Value> v8IteratorResult(v8::Isolate* isolate, v8::Handle<v8::Value> value) |
| { |
| v8::Local<v8::Object> result = v8::Object::New(isolate); |
| result->Set(v8String(isolate, "value"), value); |
| result->Set(v8String(isolate, "done"), v8Boolean(false, isolate)); |
| return result; |
| } |
| |
| } // namespace blink |