| /* |
| * Copyright (C) 2013 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/ScriptPreprocessor.h" |
| |
| #include "bindings/core/v8/ScriptController.h" |
| #include "bindings/core/v8/ScriptSourceCode.h" |
| #include "bindings/core/v8/ScriptValue.h" |
| #include "bindings/core/v8/V8Binding.h" |
| #include "bindings/core/v8/V8ScriptRunner.h" |
| #include "core/frame/FrameConsole.h" |
| #include "core/frame/FrameHost.h" |
| #include "core/frame/LocalFrame.h" |
| #include "core/inspector/ConsoleMessage.h" |
| #include "wtf/TemporaryChange.h" |
| |
| namespace blink { |
| |
| ScriptPreprocessor::ScriptPreprocessor(const ScriptSourceCode& preprocessorSourceCode, LocalFrame* frame) |
| : m_isPreprocessing(false) |
| { |
| RefPtr<DOMWrapperWorld> world = DOMWrapperWorld::ensureIsolatedWorld(ScriptPreprocessorIsolatedWorldId, DOMWrapperWorld::mainWorldExtensionGroup); |
| m_scriptState = ScriptState::from(toV8Context(frame, *world)); |
| |
| v8::HandleScope handleScope(m_scriptState->isolate()); |
| ASSERT(frame); |
| v8::TryCatch tryCatch; |
| tryCatch.SetVerbose(true); |
| Vector<ScriptSourceCode> sources; |
| sources.append(preprocessorSourceCode); |
| Vector<v8::Local<v8::Value> > scriptResults; |
| frame->script().executeScriptInIsolatedWorld(ScriptPreprocessorIsolatedWorldId, sources, DOMWrapperWorld::mainWorldExtensionGroup, &scriptResults); |
| |
| if (scriptResults.size() != 1) { |
| frame->console().addMessage(ConsoleMessage::create(JSMessageSource, ErrorMessageLevel, "ScriptPreprocessor internal error, one ScriptSourceCode must give exactly one result.")); |
| return; |
| } |
| |
| v8::Local<v8::Value> preprocessorFunction = scriptResults[0]; |
| if (preprocessorFunction.IsEmpty() || !preprocessorFunction->IsFunction()) { |
| frame->console().addMessage(ConsoleMessage::create(JSMessageSource, ErrorMessageLevel, "The preprocessor must compile to a function.")); |
| return; |
| } |
| m_preprocessorFunction.set(m_scriptState->isolate(), v8::Handle<v8::Function>::Cast(preprocessorFunction)); |
| } |
| |
| String ScriptPreprocessor::preprocessSourceCode(const String& sourceCode, const String& sourceName) |
| { |
| if (!isValid()) |
| return sourceCode; |
| |
| return preprocessSourceCode(sourceCode, sourceName, v8::Undefined(m_scriptState->isolate())); |
| } |
| |
| String ScriptPreprocessor::preprocessSourceCode(const String& sourceCode, const String& sourceName, const String& functionName) |
| { |
| if (!isValid()) |
| return sourceCode; |
| |
| v8::Handle<v8::String> functionNameString = v8String(m_scriptState->isolate(), functionName); |
| return preprocessSourceCode(sourceCode, sourceName, functionNameString); |
| } |
| |
| String ScriptPreprocessor::preprocessSourceCode(const String& sourceCode, const String& sourceName, v8::Handle<v8::Value> functionName) |
| { |
| if (!isValid()) |
| return sourceCode; |
| |
| v8::Isolate* isolate = m_scriptState->isolate(); |
| ScriptState::Scope scope(m_scriptState.get()); |
| |
| v8::Handle<v8::String> sourceCodeString = v8String(isolate, sourceCode); |
| v8::Handle<v8::String> sourceNameString = v8String(isolate, sourceName); |
| v8::Handle<v8::Value> argv[] = { sourceCodeString, sourceNameString, functionName}; |
| |
| v8::TryCatch tryCatch; |
| tryCatch.SetVerbose(true); |
| TemporaryChange<bool> isPreprocessing(m_isPreprocessing, true); |
| v8::Handle<v8::Value> resultValue = V8ScriptRunner::callAsFunction(isolate, m_preprocessorFunction.newLocal(isolate), m_scriptState->context()->Global(), WTF_ARRAY_LENGTH(argv), argv); |
| |
| if (!resultValue.IsEmpty() && resultValue->IsString()) |
| return toCoreStringWithNullCheck(resultValue.As<v8::String>()); |
| |
| return sourceCode; |
| } |
| |
| } // namespace blink |