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author | Lorry Tar Creator <lorry-tar-importer@lorry> | 2017-06-27 06:07:23 +0000 |
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committer | Lorry Tar Creator <lorry-tar-importer@lorry> | 2017-06-27 06:07:23 +0000 |
commit | 1bf1084f2b10c3b47fd1a588d85d21ed0eb41d0c (patch) | |
tree | 46dcd36c86e7fbc6e5df36deb463b33e9967a6f7 /Source/WebCore/bindings/js/ScriptCallStackFactory.cpp | |
parent | 32761a6cee1d0dee366b885b7b9c777e67885688 (diff) | |
download | WebKitGtk-tarball-master.tar.gz |
webkitgtk-2.16.5HEADwebkitgtk-2.16.5master
Diffstat (limited to 'Source/WebCore/bindings/js/ScriptCallStackFactory.cpp')
-rw-r--r-- | Source/WebCore/bindings/js/ScriptCallStackFactory.cpp | 209 |
1 files changed, 0 insertions, 209 deletions
diff --git a/Source/WebCore/bindings/js/ScriptCallStackFactory.cpp b/Source/WebCore/bindings/js/ScriptCallStackFactory.cpp deleted file mode 100644 index 7d695a444..000000000 --- a/Source/WebCore/bindings/js/ScriptCallStackFactory.cpp +++ /dev/null @@ -1,209 +0,0 @@ -/* - * Copyright (c) 2010 Google Inc. All rights reserved. - * Copyright (C) 2012 Research In Motion Limited. 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 "ScriptCallStackFactory.h" - -#include "InspectorInstrumentation.h" -#include "JSDOMBinding.h" -#include "JSMainThreadExecState.h" -#include "ScriptArguments.h" -#include "ScriptCallFrame.h" -#include "ScriptCallStack.h" -#include <bindings/ScriptValue.h> -#include <interpreter/CallFrame.h> -#include <interpreter/CallFrameInlines.h> -#include <interpreter/StackVisitor.h> -#include <runtime/ArgList.h> -#include <runtime/JSCJSValue.h> -#include <runtime/JSFunction.h> -#include <runtime/VM.h> -#include <wtf/text/WTFString.h> - -using namespace JSC; - -namespace WebCore { - -class ScriptExecutionContext; - -class CreateScriptCallStackFunctor { -public: - CreateScriptCallStackFunctor(Vector<ScriptCallFrame>& frames, size_t remainingCapacity) - : m_frames(frames) - , m_remainingCapacityForFrameCapture(remainingCapacity) - { - } - - StackVisitor::Status operator()(StackVisitor& visitor) - { - if (m_remainingCapacityForFrameCapture) { - unsigned line; - unsigned column; - visitor->computeLineAndColumn(line, column); - m_frames.append(ScriptCallFrame(visitor->functionName(), visitor->sourceURL(), line, column)); - - m_remainingCapacityForFrameCapture--; - return StackVisitor::Continue; - } - return StackVisitor::Done; - } - -private: - Vector<ScriptCallFrame>& m_frames; - size_t m_remainingCapacityForFrameCapture; -}; - -PassRefPtr<ScriptCallStack> createScriptCallStack(size_t maxStackSize, bool emptyIsAllowed) -{ - Vector<ScriptCallFrame> frames; - if (JSC::ExecState* exec = JSMainThreadExecState::currentState()) { - CallFrame* frame = exec->vm().topCallFrame; - CreateScriptCallStackFunctor functor(frames, maxStackSize); - frame->iterate(functor); - } - if (frames.isEmpty() && !emptyIsAllowed) { - // No frames found. It may happen in the case where - // a bound function is called from native code for example. - // Fallback to setting lineNumber to 0, and source and function name to "undefined". - frames.append(ScriptCallFrame("undefined", "undefined", 0, 0)); - } - return ScriptCallStack::create(frames); -} - -class CreateScriptCallStackForConsoleFunctor { -public: - CreateScriptCallStackForConsoleFunctor(bool needToSkipAFrame, size_t remainingCapacity, Vector<ScriptCallFrame>& frames) - : m_needToSkipAFrame(needToSkipAFrame) - , m_remainingCapacityForFrameCapture(remainingCapacity) - , m_frames(frames) - { - } - - StackVisitor::Status operator()(StackVisitor& visitor) - { - if (m_needToSkipAFrame) { - m_needToSkipAFrame = false; - return StackVisitor::Continue; - } - - if (m_remainingCapacityForFrameCapture) { - // This early exit is necessary to maintain our old behaviour - // but the stack trace we produce now is complete and handles all - // ways in which code may be running - if (!visitor->callee() && m_frames.size()) - return StackVisitor::Done; - - unsigned line; - unsigned column; - visitor->computeLineAndColumn(line, column); - m_frames.append(ScriptCallFrame(visitor->functionName(), visitor->sourceURL(), line, column)); - - m_remainingCapacityForFrameCapture--; - return StackVisitor::Continue; - } - return StackVisitor::Done; - } - -private: - bool m_needToSkipAFrame; - size_t m_remainingCapacityForFrameCapture; - Vector<ScriptCallFrame>& m_frames; -}; - -PassRefPtr<ScriptCallStack> createScriptCallStack(JSC::ExecState* exec, size_t maxStackSize) -{ - Vector<ScriptCallFrame> frames; - ASSERT(exec); - CallFrame* frame = exec->vm().topCallFrame; - CreateScriptCallStackForConsoleFunctor functor(true, maxStackSize, frames); - frame->iterate(functor); - if (frames.isEmpty()) { - CreateScriptCallStackForConsoleFunctor functor(false, maxStackSize, frames); - frame->iterate(functor); - } - return ScriptCallStack::create(frames); -} - -PassRefPtr<ScriptCallStack> createScriptCallStackFromException(JSC::ExecState* exec, JSC::JSValue& exception, size_t maxStackSize) -{ - Vector<ScriptCallFrame> frames; - RefCountedArray<StackFrame> stackTrace = exec->vm().exceptionStack(); - for (size_t i = 0; i < stackTrace.size() && i < maxStackSize; i++) { - if (!stackTrace[i].callee && frames.size()) - break; - - String functionName = stackTrace[i].friendlyFunctionName(exec); - unsigned line; - unsigned column; - stackTrace[i].computeLineAndColumn(line, column); - frames.append(ScriptCallFrame(functionName, stackTrace[i].sourceURL, line, column)); - } - - // FIXME: <http://webkit.org/b/115087> Web Inspector: WebCore::reportException should not evaluate JavaScript handling exceptions - // Fallback to getting at least the line and sourceURL from the exception if it has values and the exceptionStack doesn't. - if (frames.size() > 0) { - const ScriptCallFrame& firstCallFrame = frames.first(); - JSObject* exceptionObject = exception.toObject(exec); - if (exception.isObject() && firstCallFrame.sourceURL().isEmpty()) { - JSValue lineValue = exceptionObject->getDirect(exec->vm(), Identifier(exec, "line")); - int lineNumber = lineValue && lineValue.isNumber() ? int(lineValue.toNumber(exec)) : 0; - JSValue columnValue = exceptionObject->getDirect(exec->vm(), Identifier(exec, "column")); - int columnNumber = columnValue && columnValue.isNumber() ? int(columnValue.toNumber(exec)) : 0; - JSValue sourceURLValue = exceptionObject->getDirect(exec->vm(), Identifier(exec, "sourceURL")); - String exceptionSourceURL = sourceURLValue && sourceURLValue.isString() ? sourceURLValue.toString(exec)->value(exec) : ASCIILiteral("undefined"); - frames[0] = ScriptCallFrame(firstCallFrame.functionName(), exceptionSourceURL, lineNumber, columnNumber); - } - } - - return ScriptCallStack::create(frames); -} - -PassRefPtr<ScriptCallStack> createScriptCallStackForConsole(JSC::ExecState* exec) -{ - size_t maxStackSize = 1; - if (InspectorInstrumentation::hasFrontends()) { - ScriptExecutionContext* scriptExecutionContext = jsCast<JSDOMGlobalObject*>(exec->lexicalGlobalObject())->scriptExecutionContext(); - if (InspectorInstrumentation::consoleAgentEnabled(scriptExecutionContext)) - maxStackSize = ScriptCallStack::maxCallStackSizeToCapture; - } - return createScriptCallStack(exec, maxStackSize); -} - -PassRefPtr<ScriptArguments> createScriptArguments(JSC::ExecState* exec, unsigned skipArgumentCount) -{ - Vector<Deprecated::ScriptValue> arguments; - size_t argumentCount = exec->argumentCount(); - for (size_t i = skipArgumentCount; i < argumentCount; ++i) - arguments.append(Deprecated::ScriptValue(exec->vm(), exec->uncheckedArgument(i))); - return ScriptArguments::create(exec, arguments); -} - -} // namespace WebCore |