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authorLorry Tar Creator <lorry-tar-importer@lorry>2016-04-10 09:28:39 +0000
committerLorry Tar Creator <lorry-tar-importer@lorry>2016-04-10 09:28:39 +0000
commit32761a6cee1d0dee366b885b7b9c777e67885688 (patch)
treed6bec92bebfb216f4126356e55518842c2f476a1 /Source/JavaScriptCore/runtime/GeneratorFrame.cpp
parenta4e969f4965059196ca948db781e52f7cfebf19e (diff)
downloadWebKitGtk-tarball-32761a6cee1d0dee366b885b7b9c777e67885688.tar.gz
webkitgtk-2.4.11webkitgtk-2.4.11
Diffstat (limited to 'Source/JavaScriptCore/runtime/GeneratorFrame.cpp')
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diff --git a/Source/JavaScriptCore/runtime/GeneratorFrame.cpp b/Source/JavaScriptCore/runtime/GeneratorFrame.cpp
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-/*
- * Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>.
- *
- * 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 INC. 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 INC. 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.
- */
-
-#include "config.h"
-#include "GeneratorFrame.h"
-
-#include "CodeBlock.h"
-#include "HeapIterationScope.h"
-#include "JSCJSValueInlines.h"
-#include "JSCellInlines.h"
-#include "SlotVisitorInlines.h"
-#include "StructureInlines.h"
-
-namespace JSC {
-
-const ClassInfo GeneratorFrame::s_info = { "GeneratorFrame", nullptr, nullptr, CREATE_METHOD_TABLE(GeneratorFrame) };
-
-GeneratorFrame::GeneratorFrame(VM& vm, size_t numberOfCalleeLocals)
- : Base(vm, vm.generatorFrameStructure.get())
- , m_numberOfCalleeLocals(numberOfCalleeLocals)
-{
-}
-
-void GeneratorFrame::finishCreation(VM& vm)
-{
- Base::finishCreation(vm);
- for (size_t i = 0; i < m_numberOfCalleeLocals; ++i)
- localAt(i).clear();
-}
-
-Structure* GeneratorFrame::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
-{
- return Structure::create(vm, globalObject, prototype, TypeInfo(CellType, StructureFlags), info());
-}
-
-GeneratorFrame* GeneratorFrame::create(VM& vm, size_t numberOfLocals)
-{
- GeneratorFrame* result =
- new (
- NotNull,
- allocateCell<GeneratorFrame>(vm.heap, allocationSizeForLocals(numberOfLocals)))
- GeneratorFrame(vm, numberOfLocals);
- result->finishCreation(vm);
- return result;
-}
-
-void GeneratorFrame::save(ExecState* exec, const FastBitVector& liveCalleeLocals)
-{
- // Only save callee locals.
- // Every time a generator is called (or resumed), parameters should be replaced.
- ASSERT(liveCalleeLocals.numBits() <= m_numberOfCalleeLocals);
- liveCalleeLocals.forEachSetBit([&](size_t index) {
- localAt(index).set(exec->vm(), this, exec->uncheckedR(virtualRegisterForLocal(index)).jsValue());
- });
-}
-
-void GeneratorFrame::resume(ExecState* exec, const FastBitVector& liveCalleeLocals)
-{
- // Only resume callee locals.
- // Every time a generator is called (or resumed), parameters should be replaced.
- liveCalleeLocals.forEachSetBit([&](size_t index) {
- exec->uncheckedR(virtualRegisterForLocal(index)) = localAt(index).get();
- localAt(index).clear();
- });
-}
-
-void GeneratorFrame::visitChildren(JSCell* cell, SlotVisitor& visitor)
-{
- GeneratorFrame* thisObject = jsCast<GeneratorFrame*>(cell);
- Base::visitChildren(thisObject, visitor);
- // Since only true cell pointers are stored as a cell, we can safely mark them.
- visitor.appendValues(thisObject->locals(), thisObject->m_numberOfCalleeLocals);
-}
-
-} // namespace JSC