#include "config.h"
#include "Nodes.h"
+#include "NodeConstructors.h"
#include "BytecodeGenerator.h"
#include "CallFrame.h"
-#include "JSGlobalObject.h"
-#include "JSStaticScopeObject.h"
-#include "LabelScope.h"
-#include "Parser.h"
-#include "PropertyNameArray.h"
-#include "RegExpObject.h"
-#include "SamplingTool.h"
-#include "Debugger.h"
-#include "Lexer.h"
-#include "Operations.h"
-#include <math.h>
-#include <wtf/Assertions.h>
-#include <wtf/HashCountedSet.h>
-#include <wtf/HashSet.h>
-#include <wtf/MathExtras.h>
-#include <wtf/RefCountedLeakCounter.h>
-#include <wtf/Threading.h>
-
-using namespace WTF;
-
-namespace JSC {
-
-static void substitute(UString& string, const UString& substring) JSC_FAST_CALL;
-
-// ------------------------------ NodeReleaser --------------------------------
-
-class NodeReleaser : Noncopyable {
-public:
- // Call this function inside the destructor of a class derived from Node.
- // This will traverse the tree below this node, destroying all of those nodes,
- // but without relying on recursion.
- static void releaseAllNodes(ParserRefCounted* root);
-
- // Call this on each node in a the releaseNodes virtual function.
- // It gives the node to the NodeReleaser, which will then release the
- // node later at the end of the releaseAllNodes process.
- template <typename T> void release(RefPtr<T>& node) { if (node) adopt(node.release()); }
- void release(RefPtr<FunctionBodyNode>& node) { if (node) adoptFunctionBodyNode(node); }
-
-private:
- NodeReleaser() { }
- ~NodeReleaser() { }
-
- void adopt(PassRefPtr<ParserRefCounted>);
- void adoptFunctionBodyNode(RefPtr<FunctionBodyNode>&);
-
- typedef Vector<RefPtr<ParserRefCounted> > NodeReleaseVector;
- OwnPtr<NodeReleaseVector> m_vector;
-};
-
-void NodeReleaser::releaseAllNodes(ParserRefCounted* root)
-{
- ASSERT(root);
- NodeReleaser releaser;
- root->releaseNodes(releaser);
- if (!releaser.m_vector)
- return;
- // Note: The call to release.m_vector->size() is intentionally inside
- // the loop, since calls to releaseNodes are expected to increase the size.
- for (size_t i = 0; i < releaser.m_vector->size(); ++i) {
- ParserRefCounted* node = (*releaser.m_vector)[i].get();
- if (node->hasOneRef())
- node->releaseNodes(releaser);
- }
-}
-
-void NodeReleaser::adopt(PassRefPtr<ParserRefCounted> node)
-{
- ASSERT(node);
- if (!node->hasOneRef())
- return;
- if (!m_vector)
- m_vector.set(new NodeReleaseVector);
- m_vector->append(node);
-}
-
-void NodeReleaser::adoptFunctionBodyNode(RefPtr<FunctionBodyNode>& functionBodyNode)
-{
- // This sidesteps a problem where if you assign a PassRefPtr<FunctionBodyNode>
- // to a PassRefPtr<Node> we leave the two reference counts (FunctionBodyNode
- // and ParserRefCounted) unbalanced. It would be nice to fix this problem in
- // a cleaner way -- perhaps we could remove the FunctionBodyNode reference
- // count at some point.
- RefPtr<Node> node = functionBodyNode;
- functionBodyNode = 0;
- adopt(node.release());
-}
-
-// ------------------------------ ParserRefCounted -----------------------------------------
-
-#ifndef NDEBUG
-static RefCountedLeakCounter parserRefCountedCounter("JSC::Node");
-#endif
-
-ParserRefCounted::ParserRefCounted(JSGlobalData* globalData)
- : m_globalData(globalData)
-{
-#ifndef NDEBUG
- parserRefCountedCounter.increment();
-#endif
- if (!m_globalData->newParserObjects)
- m_globalData->newParserObjects = new HashSet<ParserRefCounted*>;
- m_globalData->newParserObjects->add(this);
- ASSERT(m_globalData->newParserObjects->contains(this));
-}
-
-ParserRefCounted::~ParserRefCounted()
-{
-#ifndef NDEBUG
- parserRefCountedCounter.decrement();
-#endif
-}
-
-void ParserRefCounted::releaseNodes(NodeReleaser&)
-{
-}
-
-void ParserRefCounted::ref()
-{
- // bumping from 0 to 1 is just removing from the new nodes set
- if (m_globalData->newParserObjects) {
- HashSet<ParserRefCounted*>::iterator it = m_globalData->newParserObjects->find(this);
- if (it != m_globalData->newParserObjects->end()) {
- m_globalData->newParserObjects->remove(it);
- ASSERT(!m_globalData->parserObjectExtraRefCounts || !m_globalData->parserObjectExtraRefCounts->contains(this));
- return;
- }
- }
-
- ASSERT(!m_globalData->newParserObjects || !m_globalData->newParserObjects->contains(this));
-
- if (!m_globalData->parserObjectExtraRefCounts)
- m_globalData->parserObjectExtraRefCounts = new HashCountedSet<ParserRefCounted*>;
- m_globalData->parserObjectExtraRefCounts->add(this);
-}
-
-void ParserRefCounted::deref()
-{
- ASSERT(!m_globalData->newParserObjects || !m_globalData->newParserObjects->contains(this));
-
- if (!m_globalData->parserObjectExtraRefCounts) {
- delete this;
- return;
- }
-
- HashCountedSet<ParserRefCounted*>::iterator it = m_globalData->parserObjectExtraRefCounts->find(this);
- if (it == m_globalData->parserObjectExtraRefCounts->end())
- delete this;
- else
- m_globalData->parserObjectExtraRefCounts->remove(it);
-}
-
-bool ParserRefCounted::hasOneRef()
-{
- if (m_globalData->newParserObjects && m_globalData->newParserObjects->contains(this)) {
- ASSERT(!m_globalData->parserObjectExtraRefCounts || !m_globalData->parserObjectExtraRefCounts->contains(this));
- return false;
- }
-
- ASSERT(!m_globalData->newParserObjects || !m_globalData->newParserObjects->contains(this));
-
- if (!m_globalData->parserObjectExtraRefCounts)
- return true;
-
- return !m_globalData->parserObjectExtraRefCounts->contains(this);
-}
-
-void ParserRefCounted::deleteNewObjects(JSGlobalData* globalData)
-{
- if (!globalData->newParserObjects)
- return;
-
-#ifndef NDEBUG
- HashSet<ParserRefCounted*>::iterator end = globalData->newParserObjects->end();
- for (HashSet<ParserRefCounted*>::iterator it = globalData->newParserObjects->begin(); it != end; ++it)
- ASSERT(!globalData->parserObjectExtraRefCounts || !globalData->parserObjectExtraRefCounts->contains(*it));
-#endif
- deleteAllValues(*globalData->newParserObjects);
- delete globalData->newParserObjects;
- globalData->newParserObjects = 0;
-}
-
-// ------------------------------ Node --------------------------------
-
-Node::Node(JSGlobalData* globalData)
- : ParserRefCounted(globalData)
-{
- m_line = globalData->lexer->lineNo();
-}
-
-// ------------------------------ ThrowableExpressionData --------------------------------
-
-static void substitute(UString& string, const UString& substring)
-{
- int position = string.find("%s");
- ASSERT(position != -1);
- UString newString = string.substr(0, position);
- newString.append(substring);
- newString.append(string.substr(position + 2));
- string = newString;
-}
-
-RegisterID* ThrowableExpressionData::emitThrowError(BytecodeGenerator& generator, ErrorType e, const char* msg)
-{
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- RegisterID* exception = generator.emitNewError(generator.newTemporary(), e, jsString(generator.globalData(), msg));
- generator.emitThrow(exception);
- return exception;
-}
-
-RegisterID* ThrowableExpressionData::emitThrowError(BytecodeGenerator& generator, ErrorType e, const char* msg, const Identifier& label)
-{
- UString message = msg;
- substitute(message, label.ustring());
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- RegisterID* exception = generator.emitNewError(generator.newTemporary(), e, jsString(generator.globalData(), message));
- generator.emitThrow(exception);
- return exception;
-}
-
-// ------------------------------ StatementNode --------------------------------
-
-StatementNode::StatementNode(JSGlobalData* globalData)
- : Node(globalData)
- , m_lastLine(-1)
-{
-}
-
-void StatementNode::setLoc(int firstLine, int lastLine)
-{
- m_line = firstLine;
- m_lastLine = lastLine;
-}
-
-// ------------------------------ SourceElements --------------------------------
-
-void SourceElements::append(PassRefPtr<StatementNode> statement)
-{
- if (statement->isEmptyStatement())
- return;
-
- m_statements.append(statement);
-}
-
-// ------------------------------ NullNode -------------------------------------
-
-RegisterID* NullNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- if (dst == generator.ignoredResult())
- return 0;
- return generator.emitLoad(dst, jsNull());
-}
-
-// ------------------------------ BooleanNode ----------------------------------
-
-RegisterID* BooleanNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- if (dst == generator.ignoredResult())
- return 0;
- return generator.emitLoad(dst, m_value);
-}
-
-// ------------------------------ NumberNode -----------------------------------
-
-RegisterID* NumberNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- if (dst == generator.ignoredResult())
- return 0;
- return generator.emitLoad(dst, m_double);
-}
-
-// ------------------------------ StringNode -----------------------------------
-
-RegisterID* StringNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- if (dst == generator.ignoredResult())
- return 0;
- return generator.emitLoad(dst, m_value);
-}
-
-// ------------------------------ RegExpNode -----------------------------------
-
-RegisterID* RegExpNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegExp> regExp = RegExp::create(generator.globalData(), m_pattern, m_flags);
- if (!regExp->isValid())
- return emitThrowError(generator, SyntaxError, ("Invalid regular expression: " + UString(regExp->errorMessage())).UTF8String().c_str());
- if (dst == generator.ignoredResult())
- return 0;
- return generator.emitNewRegExp(generator.finalDestination(dst), regExp.get());
-}
-
-// ------------------------------ ThisNode -------------------------------------
-
-RegisterID* ThisNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- if (dst == generator.ignoredResult())
- return 0;
- return generator.moveToDestinationIfNeeded(dst, generator.thisRegister());
-}
-
-// ------------------------------ ResolveNode ----------------------------------
-
-bool ResolveNode::isPure(BytecodeGenerator& generator) const
-{
- return generator.isLocal(m_ident);
-}
-
-RegisterID* ResolveNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- if (RegisterID* local = generator.registerFor(m_ident)) {
- if (dst == generator.ignoredResult())
- return 0;
- return generator.moveToDestinationIfNeeded(dst, local);
- }
-
- generator.emitExpressionInfo(m_startOffset + m_ident.size(), m_ident.size(), 0);
- return generator.emitResolve(generator.finalDestination(dst), m_ident);
-}
-
-// ------------------------------ ElementNode ------------------------------------
-
-ElementNode::~ElementNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void ElementNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_next);
- releaser.release(m_node);
-}
-
-// ------------------------------ ArrayNode ------------------------------------
-
-ArrayNode::~ArrayNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void ArrayNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_element);
-}
-
-RegisterID* ArrayNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- // FIXME: Should we put all of this code into emitNewArray?
-
- unsigned length = 0;
- ElementNode* firstPutElement;
- for (firstPutElement = m_element.get(); firstPutElement; firstPutElement = firstPutElement->next()) {
- if (firstPutElement->elision())
- break;
- ++length;
- }
-
- if (!firstPutElement && !m_elision)
- return generator.emitNewArray(generator.finalDestination(dst), m_element.get());
-
- RefPtr<RegisterID> array = generator.emitNewArray(generator.tempDestination(dst), m_element.get());
-
- for (ElementNode* n = firstPutElement; n; n = n->next()) {
- RegisterID* value = generator.emitNode(n->value());
- length += n->elision();
- generator.emitPutByIndex(array.get(), length++, value);
- }
-
- if (m_elision) {
- RegisterID* value = generator.emitLoad(0, jsNumber(generator.globalData(), m_elision + length));
- generator.emitPutById(array.get(), generator.propertyNames().length, value);
- }
-
- return generator.moveToDestinationIfNeeded(dst, array.get());
-}
-
-// ------------------------------ PropertyNode ----------------------------
-
-PropertyNode::~PropertyNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void PropertyNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_assign);
-}
-
-// ------------------------------ ObjectLiteralNode ----------------------------
-
-ObjectLiteralNode::~ObjectLiteralNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void ObjectLiteralNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_list);
-}
-
-RegisterID* ObjectLiteralNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- if (!m_list) {
- if (dst == generator.ignoredResult())
- return 0;
- return generator.emitNewObject(generator.finalDestination(dst));
- }
- return generator.emitNode(dst, m_list.get());
-}
-
-// ------------------------------ PropertyListNode -----------------------------
-
-PropertyListNode::~PropertyListNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void PropertyListNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_node);
- releaser.release(m_next);
-}
-
-RegisterID* PropertyListNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegisterID> newObj = generator.tempDestination(dst);
-
- generator.emitNewObject(newObj.get());
-
- for (PropertyListNode* p = this; p; p = p->m_next.get()) {
- RegisterID* value = generator.emitNode(p->m_node->m_assign.get());
-
- switch (p->m_node->m_type) {
- case PropertyNode::Constant: {
- generator.emitPutById(newObj.get(), p->m_node->name(), value);
- break;
- }
- case PropertyNode::Getter: {
- generator.emitPutGetter(newObj.get(), p->m_node->name(), value);
- break;
- }
- case PropertyNode::Setter: {
- generator.emitPutSetter(newObj.get(), p->m_node->name(), value);
- break;
- }
- default:
- ASSERT_NOT_REACHED();
- }
- }
-
- return generator.moveToDestinationIfNeeded(dst, newObj.get());
-}
-
-// ------------------------------ BracketAccessorNode --------------------------------
-
-BracketAccessorNode::~BracketAccessorNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void BracketAccessorNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_base);
- releaser.release(m_subscript);
-}
-
-RegisterID* BracketAccessorNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegisterID> base = generator.emitNodeForLeftHandSide(m_base.get(), m_subscriptHasAssignments, m_subscript->isPure(generator));
- RegisterID* property = generator.emitNode(m_subscript.get());
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- return generator.emitGetByVal(generator.finalDestination(dst), base.get(), property);
-}
-
-// ------------------------------ DotAccessorNode --------------------------------
-
-DotAccessorNode::~DotAccessorNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void DotAccessorNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_base);
-}
-
-RegisterID* DotAccessorNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RegisterID* base = generator.emitNode(m_base.get());
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- return generator.emitGetById(generator.finalDestination(dst), base, m_ident);
-}
-
-// ------------------------------ ArgumentListNode -----------------------------
-
-ArgumentListNode::~ArgumentListNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void ArgumentListNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_next);
- releaser.release(m_expr);
-}
-
-RegisterID* ArgumentListNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- ASSERT(m_expr);
- return generator.emitNode(dst, m_expr.get());
-}
-
-// ------------------------------ ArgumentsNode -----------------------------
-
-ArgumentsNode::~ArgumentsNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void ArgumentsNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_listNode);
-}
-
-// ------------------------------ NewExprNode ----------------------------------
-
-NewExprNode::~NewExprNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void NewExprNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_expr);
- releaser.release(m_args);
-}
-
-RegisterID* NewExprNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegisterID> func = generator.emitNode(m_expr.get());
- return generator.emitConstruct(generator.finalDestination(dst), func.get(), m_args.get(), divot(), startOffset(), endOffset());
-}
-
-// ------------------------------ EvalFunctionCallNode ----------------------------------
-
-EvalFunctionCallNode::~EvalFunctionCallNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void EvalFunctionCallNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_args);
-}
-
-RegisterID* EvalFunctionCallNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegisterID> func = generator.tempDestination(dst);
- RefPtr<RegisterID> thisRegister = generator.newTemporary();
- generator.emitExpressionInfo(divot() - startOffset() + 4, 4, 0);
- generator.emitResolveWithBase(thisRegister.get(), func.get(), generator.propertyNames().eval);
- return generator.emitCallEval(generator.finalDestination(dst, func.get()), func.get(), thisRegister.get(), m_args.get(), divot(), startOffset(), endOffset());
-}
-
-// ------------------------------ FunctionCallValueNode ----------------------------------
-
-FunctionCallValueNode::~FunctionCallValueNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void FunctionCallValueNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_expr);
- releaser.release(m_args);
-}
-
-RegisterID* FunctionCallValueNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegisterID> func = generator.emitNode(m_expr.get());
- RefPtr<RegisterID> thisRegister = generator.emitLoad(generator.newTemporary(), jsNull());
- return generator.emitCall(generator.finalDestination(dst, func.get()), func.get(), thisRegister.get(), m_args.get(), divot(), startOffset(), endOffset());
-}
-
-// ------------------------------ FunctionCallResolveNode ----------------------------------
-
-FunctionCallResolveNode::~FunctionCallResolveNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void FunctionCallResolveNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_args);
-}
-
-RegisterID* FunctionCallResolveNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- if (RefPtr<RegisterID> local = generator.registerFor(m_ident)) {
- RefPtr<RegisterID> thisRegister = generator.emitLoad(generator.newTemporary(), jsNull());
- return generator.emitCall(generator.finalDestination(dst, thisRegister.get()), local.get(), thisRegister.get(), m_args.get(), divot(), startOffset(), endOffset());
- }
-
- int index = 0;
- size_t depth = 0;
- JSObject* globalObject = 0;
- if (generator.findScopedProperty(m_ident, index, depth, false, globalObject) && index != missingSymbolMarker()) {
- RefPtr<RegisterID> func = generator.emitGetScopedVar(generator.newTemporary(), depth, index, globalObject);
- RefPtr<RegisterID> thisRegister = generator.emitLoad(generator.newTemporary(), jsNull());
- return generator.emitCall(generator.finalDestination(dst, func.get()), func.get(), thisRegister.get(), m_args.get(), divot(), startOffset(), endOffset());
- }
-
- RefPtr<RegisterID> func = generator.tempDestination(dst);
- RefPtr<RegisterID> thisRegister = generator.newTemporary();
- int identifierStart = divot() - startOffset();
- generator.emitExpressionInfo(identifierStart + m_ident.size(), m_ident.size(), 0);
- generator.emitResolveFunction(thisRegister.get(), func.get(), m_ident);
- return generator.emitCall(generator.finalDestination(dst, func.get()), func.get(), thisRegister.get(), m_args.get(), divot(), startOffset(), endOffset());
-}
-
-// ------------------------------ FunctionCallBracketNode ----------------------------------
-
-FunctionCallBracketNode::~FunctionCallBracketNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void FunctionCallBracketNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_base);
- releaser.release(m_subscript);
- releaser.release(m_args);
-}
-
-RegisterID* FunctionCallBracketNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegisterID> base = generator.emitNode(m_base.get());
- RegisterID* property = generator.emitNode(m_subscript.get());
- generator.emitExpressionInfo(divot() - m_subexpressionDivotOffset, startOffset() - m_subexpressionDivotOffset, m_subexpressionEndOffset);
- RefPtr<RegisterID> function = generator.emitGetByVal(generator.tempDestination(dst), base.get(), property);
- RefPtr<RegisterID> thisRegister = generator.emitMove(generator.newTemporary(), base.get());
- return generator.emitCall(generator.finalDestination(dst, function.get()), function.get(), thisRegister.get(), m_args.get(), divot(), startOffset(), endOffset());
-}
-
-// ------------------------------ FunctionCallDotNode ----------------------------------
-
-FunctionCallDotNode::~FunctionCallDotNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void FunctionCallDotNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_base);
- releaser.release(m_args);
-}
-
-RegisterID* FunctionCallDotNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegisterID> base = generator.emitNode(m_base.get());
- generator.emitExpressionInfo(divot() - m_subexpressionDivotOffset, startOffset() - m_subexpressionDivotOffset, m_subexpressionEndOffset);
- RefPtr<RegisterID> function = generator.emitGetById(generator.tempDestination(dst), base.get(), m_ident);
- RefPtr<RegisterID> thisRegister = generator.emitMove(generator.newTemporary(), base.get());
- return generator.emitCall(generator.finalDestination(dst, function.get()), function.get(), thisRegister.get(), m_args.get(), divot(), startOffset(), endOffset());
-}
-
-// ------------------------------ PostfixResolveNode ----------------------------------
-
-static RegisterID* emitPreIncOrDec(BytecodeGenerator& generator, RegisterID* srcDst, Operator oper)
-{
- return (oper == OpPlusPlus) ? generator.emitPreInc(srcDst) : generator.emitPreDec(srcDst);
-}
-
-static RegisterID* emitPostIncOrDec(BytecodeGenerator& generator, RegisterID* dst, RegisterID* srcDst, Operator oper)
-{
- return (oper == OpPlusPlus) ? generator.emitPostInc(dst, srcDst) : generator.emitPostDec(dst, srcDst);
-}
-
-RegisterID* PostfixResolveNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- if (RegisterID* local = generator.registerFor(m_ident)) {
- if (generator.isLocalConstant(m_ident)) {
- if (dst == generator.ignoredResult())
- return 0;
- return generator.emitToJSNumber(generator.finalDestination(dst), local);
- }
-
- if (dst == generator.ignoredResult())
- return emitPreIncOrDec(generator, local, m_operator);
- return emitPostIncOrDec(generator, generator.finalDestination(dst), local, m_operator);
- }
-
- int index = 0;
- size_t depth = 0;
- JSObject* globalObject = 0;
- if (generator.findScopedProperty(m_ident, index, depth, true, globalObject) && index != missingSymbolMarker()) {
- RefPtr<RegisterID> value = generator.emitGetScopedVar(generator.newTemporary(), depth, index, globalObject);
- RegisterID* oldValue;
- if (dst == generator.ignoredResult()) {
- oldValue = 0;
- emitPreIncOrDec(generator, value.get(), m_operator);
- } else {
- oldValue = emitPostIncOrDec(generator, generator.finalDestination(dst), value.get(), m_operator);
- }
- generator.emitPutScopedVar(depth, index, value.get(), globalObject);
- return oldValue;
- }
-
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- RefPtr<RegisterID> value = generator.newTemporary();
- RefPtr<RegisterID> base = generator.emitResolveWithBase(generator.newTemporary(), value.get(), m_ident);
- RegisterID* oldValue;
- if (dst == generator.ignoredResult()) {
- oldValue = 0;
- emitPreIncOrDec(generator, value.get(), m_operator);
- } else {
- oldValue = emitPostIncOrDec(generator, generator.finalDestination(dst), value.get(), m_operator);
- }
- generator.emitPutById(base.get(), m_ident, value.get());
- return oldValue;
-}
-
-// ------------------------------ PostfixBracketNode ----------------------------------
-
-PostfixBracketNode::~PostfixBracketNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void PostfixBracketNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_base);
- releaser.release(m_subscript);
-}
-
-RegisterID* PostfixBracketNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegisterID> base = generator.emitNode(m_base.get());
- RefPtr<RegisterID> property = generator.emitNode(m_subscript.get());
-
- generator.emitExpressionInfo(divot() - m_subexpressionDivotOffset, startOffset() - m_subexpressionDivotOffset, m_subexpressionEndOffset);
- RefPtr<RegisterID> value = generator.emitGetByVal(generator.newTemporary(), base.get(), property.get());
- RegisterID* oldValue;
- if (dst == generator.ignoredResult()) {
- oldValue = 0;
- if (m_operator == OpPlusPlus)
- generator.emitPreInc(value.get());
- else
- generator.emitPreDec(value.get());
- } else {
- oldValue = (m_operator == OpPlusPlus) ? generator.emitPostInc(generator.finalDestination(dst), value.get()) : generator.emitPostDec(generator.finalDestination(dst), value.get());
- }
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- generator.emitPutByVal(base.get(), property.get(), value.get());
- return oldValue;
-}
-
-// ------------------------------ PostfixDotNode ----------------------------------
-
-PostfixDotNode::~PostfixDotNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void PostfixDotNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_base);
-}
-
-RegisterID* PostfixDotNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegisterID> base = generator.emitNode(m_base.get());
-
- generator.emitExpressionInfo(divot() - m_subexpressionDivotOffset, startOffset() - m_subexpressionDivotOffset, m_subexpressionEndOffset);
- RefPtr<RegisterID> value = generator.emitGetById(generator.newTemporary(), base.get(), m_ident);
- RegisterID* oldValue;
- if (dst == generator.ignoredResult()) {
- oldValue = 0;
- if (m_operator == OpPlusPlus)
- generator.emitPreInc(value.get());
- else
- generator.emitPreDec(value.get());
- } else {
- oldValue = (m_operator == OpPlusPlus) ? generator.emitPostInc(generator.finalDestination(dst), value.get()) : generator.emitPostDec(generator.finalDestination(dst), value.get());
- }
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- generator.emitPutById(base.get(), m_ident, value.get());
- return oldValue;
-}
-
-// ------------------------------ PostfixErrorNode -----------------------------------
-
-PostfixErrorNode::~PostfixErrorNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void PostfixErrorNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_expr);
-}
-
-RegisterID* PostfixErrorNode::emitBytecode(BytecodeGenerator& generator, RegisterID*)
-{
- return emitThrowError(generator, ReferenceError, m_operator == OpPlusPlus ? "Postfix ++ operator applied to value that is not a reference." : "Postfix -- operator applied to value that is not a reference.");
-}
-
-// ------------------------------ DeleteResolveNode -----------------------------------
-
-RegisterID* DeleteResolveNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- if (generator.registerFor(m_ident))
- return generator.emitUnexpectedLoad(generator.finalDestination(dst), false);
-
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- RegisterID* base = generator.emitResolveBase(generator.tempDestination(dst), m_ident);
- return generator.emitDeleteById(generator.finalDestination(dst, base), base, m_ident);
-}
-
-// ------------------------------ DeleteBracketNode -----------------------------------
-
-DeleteBracketNode::~DeleteBracketNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void DeleteBracketNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_base);
- releaser.release(m_subscript);
-}
-
-RegisterID* DeleteBracketNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegisterID> r0 = generator.emitNode(m_base.get());
- RegisterID* r1 = generator.emitNode(m_subscript.get());
-
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- return generator.emitDeleteByVal(generator.finalDestination(dst), r0.get(), r1);
-}
-
-// ------------------------------ DeleteDotNode -----------------------------------
-
-DeleteDotNode::~DeleteDotNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void DeleteDotNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_base);
-}
-
-RegisterID* DeleteDotNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RegisterID* r0 = generator.emitNode(m_base.get());
-
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- return generator.emitDeleteById(generator.finalDestination(dst), r0, m_ident);
-}
-
-// ------------------------------ DeleteValueNode -----------------------------------
-
-DeleteValueNode::~DeleteValueNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void DeleteValueNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_expr);
-}
-
-RegisterID* DeleteValueNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- generator.emitNode(generator.ignoredResult(), m_expr.get());
-
- // delete on a non-location expression ignores the value and returns true
- return generator.emitUnexpectedLoad(generator.finalDestination(dst), true);
-}
-
-// ------------------------------ VoidNode -------------------------------------
-
-VoidNode::~VoidNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void VoidNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_expr);
-}
-
-RegisterID* VoidNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- if (dst == generator.ignoredResult()) {
- generator.emitNode(generator.ignoredResult(), m_expr.get());
- return 0;
- }
- RefPtr<RegisterID> r0 = generator.emitNode(m_expr.get());
- return generator.emitLoad(dst, jsUndefined());
-}
-
-// ------------------------------ TypeOfValueNode -----------------------------------
-
-RegisterID* TypeOfResolveNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- if (RegisterID* local = generator.registerFor(m_ident)) {
- if (dst == generator.ignoredResult())
- return 0;
- return generator.emitTypeOf(generator.finalDestination(dst), local);
- }
-
- RefPtr<RegisterID> scratch = generator.emitResolveBase(generator.tempDestination(dst), m_ident);
- generator.emitGetById(scratch.get(), scratch.get(), m_ident);
- if (dst == generator.ignoredResult())
- return 0;
- return generator.emitTypeOf(generator.finalDestination(dst, scratch.get()), scratch.get());
-}
-
-// ------------------------------ TypeOfValueNode -----------------------------------
-
-TypeOfValueNode::~TypeOfValueNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void TypeOfValueNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_expr);
-}
-
-RegisterID* TypeOfValueNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- if (dst == generator.ignoredResult()) {
- generator.emitNode(generator.ignoredResult(), m_expr.get());
- return 0;
- }
- RefPtr<RegisterID> src = generator.emitNode(m_expr.get());
- return generator.emitTypeOf(generator.finalDestination(dst), src.get());
-}
-
-// ------------------------------ PrefixResolveNode ----------------------------------
-
-RegisterID* PrefixResolveNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- if (RegisterID* local = generator.registerFor(m_ident)) {
- if (generator.isLocalConstant(m_ident)) {
- if (dst == generator.ignoredResult())
- return 0;
- RefPtr<RegisterID> r0 = generator.emitUnexpectedLoad(generator.finalDestination(dst), (m_operator == OpPlusPlus) ? 1.0 : -1.0);
- return generator.emitBinaryOp(op_add, r0.get(), local, r0.get(), OperandTypes());
- }
-
- emitPreIncOrDec(generator, local, m_operator);
- return generator.moveToDestinationIfNeeded(dst, local);
- }
-
- int index = 0;
- size_t depth = 0;
- JSObject* globalObject = 0;
- if (generator.findScopedProperty(m_ident, index, depth, false, globalObject) && index != missingSymbolMarker()) {
- RefPtr<RegisterID> propDst = generator.emitGetScopedVar(generator.tempDestination(dst), depth, index, globalObject);
- emitPreIncOrDec(generator, propDst.get(), m_operator);
- generator.emitPutScopedVar(depth, index, propDst.get(), globalObject);
- return generator.moveToDestinationIfNeeded(dst, propDst.get());
- }
-
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- RefPtr<RegisterID> propDst = generator.tempDestination(dst);
- RefPtr<RegisterID> base = generator.emitResolveWithBase(generator.newTemporary(), propDst.get(), m_ident);
- emitPreIncOrDec(generator, propDst.get(), m_operator);
- generator.emitPutById(base.get(), m_ident, propDst.get());
- return generator.moveToDestinationIfNeeded(dst, propDst.get());
-}
-
-// ------------------------------ PrefixBracketNode ----------------------------------
-
-PrefixBracketNode::~PrefixBracketNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void PrefixBracketNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_base);
- releaser.release(m_subscript);
-}
-
-RegisterID* PrefixBracketNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegisterID> base = generator.emitNode(m_base.get());
- RefPtr<RegisterID> property = generator.emitNode(m_subscript.get());
- RefPtr<RegisterID> propDst = generator.tempDestination(dst);
-
- generator.emitExpressionInfo(divot() + m_subexpressionDivotOffset, m_subexpressionStartOffset, endOffset() - m_subexpressionDivotOffset);
- RegisterID* value = generator.emitGetByVal(propDst.get(), base.get(), property.get());
- if (m_operator == OpPlusPlus)
- generator.emitPreInc(value);
- else
- generator.emitPreDec(value);
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- generator.emitPutByVal(base.get(), property.get(), value);
- return generator.moveToDestinationIfNeeded(dst, propDst.get());
-}
-
-// ------------------------------ PrefixDotNode ----------------------------------
-
-PrefixDotNode::~PrefixDotNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void PrefixDotNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_base);
-}
-
-RegisterID* PrefixDotNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegisterID> base = generator.emitNode(m_base.get());
- RefPtr<RegisterID> propDst = generator.tempDestination(dst);
-
- generator.emitExpressionInfo(divot() + m_subexpressionDivotOffset, m_subexpressionStartOffset, endOffset() - m_subexpressionDivotOffset);
- RegisterID* value = generator.emitGetById(propDst.get(), base.get(), m_ident);
- if (m_operator == OpPlusPlus)
- generator.emitPreInc(value);
- else
- generator.emitPreDec(value);
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- generator.emitPutById(base.get(), m_ident, value);
- return generator.moveToDestinationIfNeeded(dst, propDst.get());
-}
-
-// ------------------------------ PrefixErrorNode -----------------------------------
-
-PrefixErrorNode::~PrefixErrorNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void PrefixErrorNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_expr);
-}
-
-RegisterID* PrefixErrorNode::emitBytecode(BytecodeGenerator& generator, RegisterID*)
-{
- return emitThrowError(generator, ReferenceError, m_operator == OpPlusPlus ? "Prefix ++ operator applied to value that is not a reference." : "Prefix -- operator applied to value that is not a reference.");
-}
-
-// ------------------------------ Unary Operation Nodes -----------------------------------
-
-UnaryOpNode::~UnaryOpNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void UnaryOpNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_expr);
-}
-
-RegisterID* UnaryOpNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RegisterID* src = generator.emitNode(m_expr.get());
- return generator.emitUnaryOp(opcodeID(), generator.finalDestination(dst), src);
-}
-
-// ------------------------------ Binary Operation Nodes -----------------------------------
-
-BinaryOpNode::~BinaryOpNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void BinaryOpNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_expr1);
- releaser.release(m_expr2);
-}
-
-RegisterID* BinaryOpNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- OpcodeID opcodeID = this->opcodeID();
- if (opcodeID == op_neq) {
- if (m_expr1->isNull() || m_expr2->isNull()) {
- RefPtr<RegisterID> src = generator.tempDestination(dst);
- generator.emitNode(src.get(), m_expr1->isNull() ? m_expr2.get() : m_expr1.get());
- return generator.emitUnaryOp(op_neq_null, generator.finalDestination(dst, src.get()), src.get());
- }
- }
-
- RefPtr<RegisterID> src1 = generator.emitNodeForLeftHandSide(m_expr1.get(), m_rightHasAssignments, m_expr2->isPure(generator));
- RegisterID* src2 = generator.emitNode(m_expr2.get());
- return generator.emitBinaryOp(opcodeID, generator.finalDestination(dst, src1.get()), src1.get(), src2, OperandTypes(m_expr1->resultDescriptor(), m_expr2->resultDescriptor()));
-}
-
-RegisterID* EqualNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- if (m_expr1->isNull() || m_expr2->isNull()) {
- RefPtr<RegisterID> src = generator.tempDestination(dst);
- generator.emitNode(src.get(), m_expr1->isNull() ? m_expr2.get() : m_expr1.get());
- return generator.emitUnaryOp(op_eq_null, generator.finalDestination(dst, src.get()), src.get());
- }
-
- RefPtr<RegisterID> src1 = generator.emitNodeForLeftHandSide(m_expr1.get(), m_rightHasAssignments, m_expr2->isPure(generator));
- RegisterID* src2 = generator.emitNode(m_expr2.get());
- return generator.emitEqualityOp(op_eq, generator.finalDestination(dst, src1.get()), src1.get(), src2);
-}
-
-RegisterID* StrictEqualNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegisterID> src1 = generator.emitNodeForLeftHandSide(m_expr1.get(), m_rightHasAssignments, m_expr2->isPure(generator));
- RegisterID* src2 = generator.emitNode(m_expr2.get());
- return generator.emitEqualityOp(op_stricteq, generator.finalDestination(dst, src1.get()), src1.get(), src2);
-}
-
-RegisterID* ReverseBinaryOpNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegisterID> src1 = generator.emitNodeForLeftHandSide(m_expr1.get(), m_rightHasAssignments, m_expr2->isPure(generator));
- RegisterID* src2 = generator.emitNode(m_expr2.get());
- return generator.emitBinaryOp(opcodeID(), generator.finalDestination(dst, src1.get()), src2, src1.get(), OperandTypes(m_expr2->resultDescriptor(), m_expr1->resultDescriptor()));
-}
-
-RegisterID* ThrowableBinaryOpNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegisterID> src1 = generator.emitNodeForLeftHandSide(m_expr1.get(), m_rightHasAssignments, m_expr2->isPure(generator));
- RegisterID* src2 = generator.emitNode(m_expr2.get());
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- return generator.emitBinaryOp(opcodeID(), generator.finalDestination(dst, src1.get()), src1.get(), src2, OperandTypes(m_expr1->resultDescriptor(), m_expr2->resultDescriptor()));
-}
-
-RegisterID* InstanceOfNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegisterID> src1 = generator.emitNodeForLeftHandSide(m_expr1.get(), m_rightHasAssignments, m_expr2->isPure(generator));
- RefPtr<RegisterID> src2 = generator.emitNode(m_expr2.get());
-
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- generator.emitGetByIdExceptionInfo(op_instanceof);
- RegisterID* src2Prototype = generator.emitGetById(generator.newTemporary(), src2.get(), generator.globalData()->propertyNames->prototype);
-
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- return generator.emitInstanceOf(generator.finalDestination(dst, src1.get()), src1.get(), src2.get(), src2Prototype);
-}
-
-// ------------------------------ LogicalOpNode ----------------------------
-
-LogicalOpNode::~LogicalOpNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void LogicalOpNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_expr1);
- releaser.release(m_expr2);
-}
-
-RegisterID* LogicalOpNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegisterID> temp = generator.tempDestination(dst);
- RefPtr<Label> target = generator.newLabel();
-
- generator.emitNode(temp.get(), m_expr1.get());
- if (m_operator == OpLogicalAnd)
- generator.emitJumpIfFalse(temp.get(), target.get());
- else
- generator.emitJumpIfTrue(temp.get(), target.get());
- generator.emitNode(temp.get(), m_expr2.get());
- generator.emitLabel(target.get());
-
- return generator.moveToDestinationIfNeeded(dst, temp.get());
-}
-
-// ------------------------------ ConditionalNode ------------------------------
-
-ConditionalNode::~ConditionalNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void ConditionalNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_logical);
- releaser.release(m_expr1);
- releaser.release(m_expr2);
-}
-
-RegisterID* ConditionalNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegisterID> newDst = generator.finalDestination(dst);
- RefPtr<Label> beforeElse = generator.newLabel();
- RefPtr<Label> afterElse = generator.newLabel();
-
- RegisterID* cond = generator.emitNode(m_logical.get());
- generator.emitJumpIfFalse(cond, beforeElse.get());
-
- generator.emitNode(newDst.get(), m_expr1.get());
- generator.emitJump(afterElse.get());
-
- generator.emitLabel(beforeElse.get());
- generator.emitNode(newDst.get(), m_expr2.get());
-
- generator.emitLabel(afterElse.get());
-
- return newDst.get();
-}
-
-// ------------------------------ ReadModifyResolveNode -----------------------------------
-
-ReadModifyResolveNode::~ReadModifyResolveNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void ReadModifyResolveNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_right);
-}
-
-// FIXME: should this be moved to be a method on BytecodeGenerator?
-static ALWAYS_INLINE RegisterID* emitReadModifyAssignment(BytecodeGenerator& generator, RegisterID* dst, RegisterID* src1, RegisterID* src2, Operator oper, OperandTypes types)
-{
- OpcodeID opcodeID;
- switch (oper) {
- case OpMultEq:
- opcodeID = op_mul;
- break;
- case OpDivEq:
- opcodeID = op_div;
- break;
- case OpPlusEq:
- opcodeID = op_add;
- break;
- case OpMinusEq:
- opcodeID = op_sub;
- break;
- case OpLShift:
- opcodeID = op_lshift;
- break;
- case OpRShift:
- opcodeID = op_rshift;
- break;
- case OpURShift:
- opcodeID = op_urshift;
- break;
- case OpAndEq:
- opcodeID = op_bitand;
- break;
- case OpXOrEq:
- opcodeID = op_bitxor;
- break;
- case OpOrEq:
- opcodeID = op_bitor;
- break;
- case OpModEq:
- opcodeID = op_mod;
- break;
- default:
- ASSERT_NOT_REACHED();
- return dst;
- }
-
- return generator.emitBinaryOp(opcodeID, dst, src1, src2, types);
-}
-
-RegisterID* ReadModifyResolveNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- if (RegisterID* local = generator.registerFor(m_ident)) {
- if (generator.isLocalConstant(m_ident)) {
- RegisterID* src2 = generator.emitNode(m_right.get());
- return emitReadModifyAssignment(generator, generator.finalDestination(dst), local, src2, m_operator, OperandTypes(ResultType::unknownType(), m_right->resultDescriptor()));
- }
-
- if (generator.leftHandSideNeedsCopy(m_rightHasAssignments, m_right->isPure(generator))) {
- RefPtr<RegisterID> result = generator.newTemporary();
- generator.emitMove(result.get(), local);
- RegisterID* src2 = generator.emitNode(m_right.get());
- emitReadModifyAssignment(generator, result.get(), result.get(), src2, m_operator, OperandTypes(ResultType::unknownType(), m_right->resultDescriptor()));
- generator.emitMove(local, result.get());
- return generator.moveToDestinationIfNeeded(dst, result.get());
- }
-
- RegisterID* src2 = generator.emitNode(m_right.get());
- RegisterID* result = emitReadModifyAssignment(generator, local, local, src2, m_operator, OperandTypes(ResultType::unknownType(), m_right->resultDescriptor()));
- return generator.moveToDestinationIfNeeded(dst, result);
- }
-
- int index = 0;
- size_t depth = 0;
- JSObject* globalObject = 0;
- if (generator.findScopedProperty(m_ident, index, depth, true, globalObject) && index != missingSymbolMarker()) {
- RefPtr<RegisterID> src1 = generator.emitGetScopedVar(generator.tempDestination(dst), depth, index, globalObject);
- RegisterID* src2 = generator.emitNode(m_right.get());
- RegisterID* result = emitReadModifyAssignment(generator, generator.finalDestination(dst, src1.get()), src1.get(), src2, m_operator, OperandTypes(ResultType::unknownType(), m_right->resultDescriptor()));
- generator.emitPutScopedVar(depth, index, result, globalObject);
- return result;
- }
-
- RefPtr<RegisterID> src1 = generator.tempDestination(dst);
- generator.emitExpressionInfo(divot() - startOffset() + m_ident.size(), m_ident.size(), 0);
- RefPtr<RegisterID> base = generator.emitResolveWithBase(generator.newTemporary(), src1.get(), m_ident);
- RegisterID* src2 = generator.emitNode(m_right.get());
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- RegisterID* result = emitReadModifyAssignment(generator, generator.finalDestination(dst, src1.get()), src1.get(), src2, m_operator, OperandTypes(ResultType::unknownType(), m_right->resultDescriptor()));
- return generator.emitPutById(base.get(), m_ident, result);
-}
-
-// ------------------------------ AssignResolveNode -----------------------------------
-
-AssignResolveNode::~AssignResolveNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void AssignResolveNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_right);
-}
-
-RegisterID* AssignResolveNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- if (RegisterID* local = generator.registerFor(m_ident)) {
- if (generator.isLocalConstant(m_ident))
- return generator.emitNode(dst, m_right.get());
-
- RegisterID* result = generator.emitNode(local, m_right.get());
- return generator.moveToDestinationIfNeeded(dst, result);
- }
-
- int index = 0;
- size_t depth = 0;
- JSObject* globalObject = 0;
- if (generator.findScopedProperty(m_ident, index, depth, true, globalObject) && index != missingSymbolMarker()) {
- if (dst == generator.ignoredResult())
- dst = 0;
- RegisterID* value = generator.emitNode(dst, m_right.get());
- generator.emitPutScopedVar(depth, index, value, globalObject);
- return value;
- }
-
- RefPtr<RegisterID> base = generator.emitResolveBase(generator.newTemporary(), m_ident);
- if (dst == generator.ignoredResult())
- dst = 0;
- RegisterID* value = generator.emitNode(dst, m_right.get());
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- return generator.emitPutById(base.get(), m_ident, value);
-}
-
-// ------------------------------ AssignDotNode -----------------------------------
-
-AssignDotNode::~AssignDotNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void AssignDotNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_base);
- releaser.release(m_right);
-}
-
-RegisterID* AssignDotNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegisterID> base = generator.emitNodeForLeftHandSide(m_base.get(), m_rightHasAssignments, m_right->isPure(generator));
- RefPtr<RegisterID> value = generator.destinationForAssignResult(dst);
- RegisterID* result = generator.emitNode(value.get(), m_right.get());
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- generator.emitPutById(base.get(), m_ident, result);
- return generator.moveToDestinationIfNeeded(dst, result);
-}
-
-// ------------------------------ ReadModifyDotNode -----------------------------------
-
-ReadModifyDotNode::~ReadModifyDotNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void ReadModifyDotNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_base);
- releaser.release(m_right);
-}
-
-RegisterID* ReadModifyDotNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegisterID> base = generator.emitNodeForLeftHandSide(m_base.get(), m_rightHasAssignments, m_right->isPure(generator));
-
- generator.emitExpressionInfo(divot() - m_subexpressionDivotOffset, startOffset() - m_subexpressionDivotOffset, m_subexpressionEndOffset);
- RefPtr<RegisterID> value = generator.emitGetById(generator.tempDestination(dst), base.get(), m_ident);
- RegisterID* change = generator.emitNode(m_right.get());
- RegisterID* updatedValue = emitReadModifyAssignment(generator, generator.finalDestination(dst, value.get()), value.get(), change, m_operator, OperandTypes(ResultType::unknownType(), m_right->resultDescriptor()));
-
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- return generator.emitPutById(base.get(), m_ident, updatedValue);
-}
-
-// ------------------------------ AssignErrorNode -----------------------------------
-
-AssignErrorNode::~AssignErrorNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void AssignErrorNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_left);
- releaser.release(m_right);
-}
-
-RegisterID* AssignErrorNode::emitBytecode(BytecodeGenerator& generator, RegisterID*)
-{
- return emitThrowError(generator, ReferenceError, "Left side of assignment is not a reference.");
-}
-
-// ------------------------------ AssignBracketNode -----------------------------------
-
-AssignBracketNode::~AssignBracketNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void AssignBracketNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_base);
- releaser.release(m_subscript);
- releaser.release(m_right);
-}
-
-RegisterID* AssignBracketNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegisterID> base = generator.emitNodeForLeftHandSide(m_base.get(), m_subscriptHasAssignments || m_rightHasAssignments, m_subscript->isPure(generator) && m_right->isPure(generator));
- RefPtr<RegisterID> property = generator.emitNodeForLeftHandSide(m_subscript.get(), m_rightHasAssignments, m_right->isPure(generator));
- RefPtr<RegisterID> value = generator.destinationForAssignResult(dst);
- RegisterID* result = generator.emitNode(value.get(), m_right.get());
-
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- generator.emitPutByVal(base.get(), property.get(), result);
- return generator.moveToDestinationIfNeeded(dst, result);
-}
-
-// ------------------------------ ReadModifyBracketNode -----------------------------------
-
-ReadModifyBracketNode::~ReadModifyBracketNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void ReadModifyBracketNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_base);
- releaser.release(m_subscript);
- releaser.release(m_right);
-}
-
-RegisterID* ReadModifyBracketNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegisterID> base = generator.emitNodeForLeftHandSide(m_base.get(), m_subscriptHasAssignments || m_rightHasAssignments, m_subscript->isPure(generator) && m_right->isPure(generator));
- RefPtr<RegisterID> property = generator.emitNodeForLeftHandSide(m_subscript.get(), m_rightHasAssignments, m_right->isPure(generator));
-
- generator.emitExpressionInfo(divot() - m_subexpressionDivotOffset, startOffset() - m_subexpressionDivotOffset, m_subexpressionEndOffset);
- RefPtr<RegisterID> value = generator.emitGetByVal(generator.tempDestination(dst), base.get(), property.get());
- RegisterID* change = generator.emitNode(m_right.get());
- RegisterID* updatedValue = emitReadModifyAssignment(generator, generator.finalDestination(dst, value.get()), value.get(), change, m_operator, OperandTypes(ResultType::unknownType(), m_right->resultDescriptor()));
-
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- generator.emitPutByVal(base.get(), property.get(), updatedValue);
-
- return updatedValue;
-}
-
-// ------------------------------ CommaNode ------------------------------------
-
-CommaNode::~CommaNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void CommaNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_expr1);
- releaser.release(m_expr2);
-}
-
-RegisterID* CommaNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- generator.emitNode(generator.ignoredResult(), m_expr1.get());
- return generator.emitNode(dst, m_expr2.get());
-}
-
-// ------------------------------ ConstDeclNode ------------------------------------
-
-ConstDeclNode::~ConstDeclNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void ConstDeclNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_next);
- releaser.release(m_init);
-}
-
-ConstDeclNode::ConstDeclNode(JSGlobalData* globalData, const Identifier& ident, ExpressionNode* init)
- : ExpressionNode(globalData)
- , m_ident(ident)
- , m_init(init)
-{
-}
-
-RegisterID* ConstDeclNode::emitCodeSingle(BytecodeGenerator& generator)
-{
- if (RegisterID* local = generator.constRegisterFor(m_ident)) {
- if (!m_init)
- return local;
-
- return generator.emitNode(local, m_init.get());
- }
-
- // FIXME: While this code should only be hit in eval code, it will potentially
- // assign to the wrong base if m_ident exists in an intervening dynamic scope.
- RefPtr<RegisterID> base = generator.emitResolveBase(generator.newTemporary(), m_ident);
- RegisterID* value = m_init ? generator.emitNode(m_init.get()) : generator.emitLoad(0, jsUndefined());
- return generator.emitPutById(base.get(), m_ident, value);
-}
-
-RegisterID* ConstDeclNode::emitBytecode(BytecodeGenerator& generator, RegisterID*)
-{
- RegisterID* result = 0;
- for (ConstDeclNode* n = this; n; n = n->m_next.get())
- result = n->emitCodeSingle(generator);
-
- return result;
-}
-
-// ------------------------------ ConstStatementNode -----------------------------
-
-ConstStatementNode::~ConstStatementNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void ConstStatementNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_next);
-}
-
-RegisterID* ConstStatementNode::emitBytecode(BytecodeGenerator& generator, RegisterID*)
-{
- return generator.emitNode(m_next.get());
-}
-
-// ------------------------------ Helper functions for handling Vectors of StatementNode -------------------------------
-
-static inline RegisterID* statementListEmitCode(const StatementVector& statements, BytecodeGenerator& generator, RegisterID* dst)
-{
- StatementVector::const_iterator end = statements.end();
- for (StatementVector::const_iterator it = statements.begin(); it != end; ++it) {
- StatementNode* n = it->get();
- if (!n->isLoop())
- generator.emitDebugHook(WillExecuteStatement, n->firstLine(), n->lastLine());
- generator.emitNode(dst, n);
- }
- return 0;
-}
-
-// ------------------------------ BlockNode ------------------------------------
-
-BlockNode::~BlockNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void BlockNode::releaseNodes(NodeReleaser& releaser)
-{
- size_t size = m_children.size();
- for (size_t i = 0; i < size; ++i)
- releaser.release(m_children[i]);
-}
-
-BlockNode::BlockNode(JSGlobalData* globalData, SourceElements* children)
- : StatementNode(globalData)
-{
- if (children)
- children->releaseContentsIntoVector(m_children);
-}
-
-RegisterID* BlockNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- return statementListEmitCode(m_children, generator, dst);
-}
-
-// ------------------------------ EmptyStatementNode ---------------------------
-
-RegisterID* EmptyStatementNode::emitBytecode(BytecodeGenerator&, RegisterID* dst)
-{
- return dst;
-}
-
-// ------------------------------ DebuggerStatementNode ---------------------------
-
-RegisterID* DebuggerStatementNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- generator.emitDebugHook(DidReachBreakpoint, firstLine(), lastLine());
- return dst;
-}
-
-// ------------------------------ ExprStatementNode ----------------------------
-
-RegisterID* ExprStatementNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- ASSERT(m_expr);
- return generator.emitNode(dst, m_expr.get());
-}
-
-// ------------------------------ VarStatementNode ----------------------------
-
-VarStatementNode::~VarStatementNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void VarStatementNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_expr);
-}
-
-RegisterID* VarStatementNode::emitBytecode(BytecodeGenerator& generator, RegisterID*)
-{
- ASSERT(m_expr);
- return generator.emitNode(m_expr.get());
-}
-
-// ------------------------------ IfNode ---------------------------------------
-
-IfNode::~IfNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void IfNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_condition);
- releaser.release(m_ifBlock);
-}
-
-RegisterID* IfNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<Label> afterThen = generator.newLabel();
-
- RegisterID* cond = generator.emitNode(m_condition.get());
- generator.emitJumpIfFalse(cond, afterThen.get());
-
- if (!m_ifBlock->isBlock())
- generator.emitDebugHook(WillExecuteStatement, m_ifBlock->firstLine(), m_ifBlock->lastLine());
-
- generator.emitNode(dst, m_ifBlock.get());
- generator.emitLabel(afterThen.get());
-
- // FIXME: This should return the last statement executed so that it can be returned as a Completion.
- return 0;
-}
-
-// ------------------------------ IfElseNode ---------------------------------------
-
-IfElseNode::~IfElseNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void IfElseNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_elseBlock);
- IfNode::releaseNodes(releaser);
-}
-
-RegisterID* IfElseNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<Label> beforeElse = generator.newLabel();
- RefPtr<Label> afterElse = generator.newLabel();
-
- RegisterID* cond = generator.emitNode(m_condition.get());
- generator.emitJumpIfFalse(cond, beforeElse.get());
-
- if (!m_ifBlock->isBlock())
- generator.emitDebugHook(WillExecuteStatement, m_ifBlock->firstLine(), m_ifBlock->lastLine());
-
- generator.emitNode(dst, m_ifBlock.get());
- generator.emitJump(afterElse.get());
-
- generator.emitLabel(beforeElse.get());
-
- if (!m_elseBlock->isBlock())
- generator.emitDebugHook(WillExecuteStatement, m_elseBlock->firstLine(), m_elseBlock->lastLine());
-
- generator.emitNode(dst, m_elseBlock.get());
-
- generator.emitLabel(afterElse.get());
-
- // FIXME: This should return the last statement executed so that it can be returned as a Completion.
- return 0;
-}
-
-// ------------------------------ DoWhileNode ----------------------------------
-
-DoWhileNode::~DoWhileNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void DoWhileNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_statement);
- releaser.release(m_expr);
-}
-
-RegisterID* DoWhileNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<LabelScope> scope = generator.newLabelScope(LabelScope::Loop);
-
- RefPtr<Label> topOfLoop = generator.newLabel();
- generator.emitLabel(topOfLoop.get());
-
- generator.emitDebugHook(WillExecuteStatement, firstLine(), lastLine());
-
- if (!m_statement->isBlock())
- generator.emitDebugHook(WillExecuteStatement, m_statement->firstLine(), m_statement->lastLine());
-
- RefPtr<RegisterID> result = generator.emitNode(dst, m_statement.get());
-
- generator.emitLabel(scope->continueTarget());
- generator.emitDebugHook(WillExecuteStatement, m_expr->lineNo(), m_expr->lineNo());
- RegisterID* cond = generator.emitNode(m_expr.get());
- generator.emitJumpIfTrue(cond, topOfLoop.get());
-
- generator.emitLabel(scope->breakTarget());
- return result.get();
-}
-
-// ------------------------------ WhileNode ------------------------------------
-
-WhileNode::~WhileNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void WhileNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_expr);
- releaser.release(m_statement);
-}
-
-RegisterID* WhileNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<LabelScope> scope = generator.newLabelScope(LabelScope::Loop);
-
- generator.emitJump(scope->continueTarget());
-
- RefPtr<Label> topOfLoop = generator.newLabel();
- generator.emitLabel(topOfLoop.get());
-
- if (!m_statement->isBlock())
- generator.emitDebugHook(WillExecuteStatement, m_statement->firstLine(), m_statement->lastLine());
-
- generator.emitNode(dst, m_statement.get());
-
- generator.emitLabel(scope->continueTarget());
- generator.emitDebugHook(WillExecuteStatement, m_expr->lineNo(), m_expr->lineNo());
- RegisterID* cond = generator.emitNode(m_expr.get());
- generator.emitJumpIfTrue(cond, topOfLoop.get());
-
- generator.emitLabel(scope->breakTarget());
-
- // FIXME: This should return the last statement executed so that it can be returned as a Completion
- return 0;
-}
-
-// ------------------------------ ForNode --------------------------------------
-
-ForNode::~ForNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void ForNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_expr1);
- releaser.release(m_expr2);
- releaser.release(m_expr3);
- releaser.release(m_statement);
-}
-
-RegisterID* ForNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- if (dst == generator.ignoredResult())
- dst = 0;
-
- RefPtr<LabelScope> scope = generator.newLabelScope(LabelScope::Loop);
-
- generator.emitDebugHook(WillExecuteStatement, firstLine(), lastLine());
-
- if (m_expr1)
- generator.emitNode(generator.ignoredResult(), m_expr1.get());
-
- RefPtr<Label> condition = generator.newLabel();
- generator.emitJump(condition.get());
-
- RefPtr<Label> topOfLoop = generator.newLabel();
- generator.emitLabel(topOfLoop.get());
-
- if (!m_statement->isBlock())
- generator.emitDebugHook(WillExecuteStatement, m_statement->firstLine(), m_statement->lastLine());
- RefPtr<RegisterID> result = generator.emitNode(dst, m_statement.get());
-
- generator.emitLabel(scope->continueTarget());
- if (m_expr3)
- generator.emitNode(generator.ignoredResult(), m_expr3.get());
-
- generator.emitLabel(condition.get());
- if (m_expr2) {
- RegisterID* cond = generator.emitNode(m_expr2.get());
- generator.emitJumpIfTrue(cond, topOfLoop.get());
- } else
- generator.emitJump(topOfLoop.get());
-
- generator.emitLabel(scope->breakTarget());
- return result.get();
-}
-
-// ------------------------------ ForInNode ------------------------------------
-
-ForInNode::~ForInNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void ForInNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_init);
- releaser.release(m_lexpr);
- releaser.release(m_expr);
- releaser.release(m_statement);
-}
-
-ForInNode::ForInNode(JSGlobalData* globalData, ExpressionNode* l, ExpressionNode* expr, StatementNode* statement)
- : StatementNode(globalData)
- , m_init(0L)
- , m_lexpr(l)
- , m_expr(expr)
- , m_statement(statement)
- , m_identIsVarDecl(false)
-{
-}
-
-ForInNode::ForInNode(JSGlobalData* globalData, const Identifier& ident, ExpressionNode* in, ExpressionNode* expr, StatementNode* statement, int divot, int startOffset, int endOffset)
- : StatementNode(globalData)
- , m_ident(ident)
- , m_lexpr(new ResolveNode(globalData, ident, divot - startOffset))
- , m_expr(expr)
- , m_statement(statement)
- , m_identIsVarDecl(true)
-{
- if (in) {
- AssignResolveNode* node = new AssignResolveNode(globalData, ident, in, true);
- node->setExceptionSourceCode(divot, divot - startOffset, endOffset - divot);
- m_init = node;
- }
- // for( var foo = bar in baz )
-}
-
-RegisterID* ForInNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<LabelScope> scope = generator.newLabelScope(LabelScope::Loop);
-
- if (!m_lexpr->isLocation())
- return emitThrowError(generator, ReferenceError, "Left side of for-in statement is not a reference.");
-
- RefPtr<Label> continueTarget = generator.newLabel();
-
- generator.emitDebugHook(WillExecuteStatement, firstLine(), lastLine());
-
- if (m_init)
- generator.emitNode(generator.ignoredResult(), m_init.get());
- RegisterID* forInBase = generator.emitNode(m_expr.get());
- RefPtr<RegisterID> iter = generator.emitGetPropertyNames(generator.newTemporary(), forInBase);
- generator.emitJump(scope->continueTarget());
-
- RefPtr<Label> loopStart = generator.newLabel();
- generator.emitLabel(loopStart.get());
-
- RegisterID* propertyName;
- if (m_lexpr->isResolveNode()) {
- const Identifier& ident = static_cast<ResolveNode*>(m_lexpr.get())->identifier();
- propertyName = generator.registerFor(ident);
- if (!propertyName) {
- propertyName = generator.newTemporary();
- RefPtr<RegisterID> protect = propertyName;
- RegisterID* base = generator.emitResolveBase(generator.newTemporary(), ident);
-
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- generator.emitPutById(base, ident, propertyName);
- }
- } else if (m_lexpr->isDotAccessorNode()) {
- DotAccessorNode* assignNode = static_cast<DotAccessorNode*>(m_lexpr.get());
- const Identifier& ident = assignNode->identifier();
- propertyName = generator.newTemporary();
- RefPtr<RegisterID> protect = propertyName;
- RegisterID* base = generator.emitNode(assignNode->base());
-
- generator.emitExpressionInfo(assignNode->divot(), assignNode->startOffset(), assignNode->endOffset());
- generator.emitPutById(base, ident, propertyName);
- } else {
- ASSERT(m_lexpr->isBracketAccessorNode());
- BracketAccessorNode* assignNode = static_cast<BracketAccessorNode*>(m_lexpr.get());
- propertyName = generator.newTemporary();
- RefPtr<RegisterID> protect = propertyName;
- RefPtr<RegisterID> base = generator.emitNode(assignNode->base());
- RegisterID* subscript = generator.emitNode(assignNode->subscript());
-
- generator.emitExpressionInfo(assignNode->divot(), assignNode->startOffset(), assignNode->endOffset());
- generator.emitPutByVal(base.get(), subscript, propertyName);
- }
-
- if (!m_statement->isBlock())
- generator.emitDebugHook(WillExecuteStatement, m_statement->firstLine(), m_statement->lastLine());
- generator.emitNode(dst, m_statement.get());
-
- generator.emitLabel(scope->continueTarget());
- generator.emitNextPropertyName(propertyName, iter.get(), loopStart.get());
- generator.emitLabel(scope->breakTarget());
- return dst;
-}
-
-// ------------------------------ ContinueNode ---------------------------------
-
-// ECMA 12.7
-RegisterID* ContinueNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- LabelScope* scope = generator.continueTarget(m_ident);
-
- if (!scope)
- return m_ident.isEmpty()
- ? emitThrowError(generator, SyntaxError, "Invalid continue statement.")
- : emitThrowError(generator, SyntaxError, "Undefined label: '%s'.", m_ident);
-
- generator.emitJumpScopes(scope->continueTarget(), scope->scopeDepth());
- return dst;
-}
-
-// ------------------------------ BreakNode ------------------------------------
-
-// ECMA 12.8
-RegisterID* BreakNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- LabelScope* scope = generator.breakTarget(m_ident);
-
- if (!scope)
- return m_ident.isEmpty()
- ? emitThrowError(generator, SyntaxError, "Invalid break statement.")
- : emitThrowError(generator, SyntaxError, "Undefined label: '%s'.", m_ident);
-
- generator.emitJumpScopes(scope->breakTarget(), scope->scopeDepth());
- return dst;
-}
-
-// ------------------------------ ReturnNode -----------------------------------
-
-ReturnNode::~ReturnNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void ReturnNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_value);
-}
-
-RegisterID* ReturnNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- if (generator.codeType() != FunctionCode)
- return emitThrowError(generator, SyntaxError, "Invalid return statement.");
-
- if (dst == generator.ignoredResult())
- dst = 0;
- RegisterID* r0 = m_value ? generator.emitNode(dst, m_value.get()) : generator.emitLoad(dst, jsUndefined());
- RefPtr<RegisterID> returnRegister;
- if (generator.scopeDepth()) {
- RefPtr<Label> l0 = generator.newLabel();
- if (generator.hasFinaliser() && !r0->isTemporary()) {
- returnRegister = generator.emitMove(generator.newTemporary(), r0);
- r0 = returnRegister.get();
- }
- generator.emitJumpScopes(l0.get(), 0);
- generator.emitLabel(l0.get());
- }
- generator.emitDebugHook(WillLeaveCallFrame, firstLine(), lastLine());
- return generator.emitReturn(r0);
-}
-
-// ------------------------------ WithNode -------------------------------------
-
-WithNode::~WithNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void WithNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_expr);
- releaser.release(m_statement);
-}
-
-RegisterID* WithNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<RegisterID> scope = generator.newTemporary();
- generator.emitNode(scope.get(), m_expr.get()); // scope must be protected until popped
- generator.emitExpressionInfo(m_divot, m_expressionLength, 0);
- generator.emitPushScope(scope.get());
- RegisterID* result = generator.emitNode(dst, m_statement.get());
- generator.emitPopScope();
- return result;
-}
-
-// ------------------------------ CaseClauseNode --------------------------------
-
-CaseClauseNode::~CaseClauseNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void CaseClauseNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_expr);
-}
-
-// ------------------------------ ClauseListNode --------------------------------
-
-ClauseListNode::~ClauseListNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void ClauseListNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_clause);
- releaser.release(m_next);
-}
-
-// ------------------------------ CaseBlockNode --------------------------------
-
-CaseBlockNode::~CaseBlockNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void CaseBlockNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_list1);
- releaser.release(m_defaultClause);
- releaser.release(m_list2);
-}
-
-enum SwitchKind {
- SwitchUnset = 0,
- SwitchNumber = 1,
- SwitchString = 2,
- SwitchNeither = 3
-};
-
-static void processClauseList(ClauseListNode* list, Vector<ExpressionNode*, 8>& literalVector, SwitchKind& typeForTable, bool& singleCharacterSwitch, int32_t& min_num, int32_t& max_num)
-{
- for (; list; list = list->getNext()) {
- ExpressionNode* clauseExpression = list->getClause()->expr();
- literalVector.append(clauseExpression);
- if (clauseExpression->isNumber()) {
- double value = static_cast<NumberNode*>(clauseExpression)->value();
- JSValuePtr jsValue = JSValuePtr::makeInt32Fast(static_cast<int32_t>(value));
- if ((typeForTable & ~SwitchNumber) || !jsValue || (jsValue.getInt32Fast() != value)) {
- typeForTable = SwitchNeither;
- break;
- }
- int32_t intVal = static_cast<int32_t>(value);
- ASSERT(intVal == value);
- if (intVal < min_num)
- min_num = intVal;
- if (intVal > max_num)
- max_num = intVal;
- typeForTable = SwitchNumber;
- continue;
- }
- if (clauseExpression->isString()) {
- if (typeForTable & ~SwitchString) {
- typeForTable = SwitchNeither;
- break;
- }
- const UString& value = static_cast<StringNode*>(clauseExpression)->value().ustring();
- if (singleCharacterSwitch &= value.size() == 1) {
- int32_t intVal = value.rep()->data()[0];
- if (intVal < min_num)
- min_num = intVal;
- if (intVal > max_num)
- max_num = intVal;
- }
- typeForTable = SwitchString;
- continue;
- }
- typeForTable = SwitchNeither;
- break;
- }
-}
-
-SwitchInfo::SwitchType CaseBlockNode::tryOptimizedSwitch(Vector<ExpressionNode*, 8>& literalVector, int32_t& min_num, int32_t& max_num)
-{
- SwitchKind typeForTable = SwitchUnset;
- bool singleCharacterSwitch = true;
-
- processClauseList(m_list1.get(), literalVector, typeForTable, singleCharacterSwitch, min_num, max_num);
- processClauseList(m_list2.get(), literalVector, typeForTable, singleCharacterSwitch, min_num, max_num);
-
- if (typeForTable == SwitchUnset || typeForTable == SwitchNeither)
- return SwitchInfo::SwitchNone;
-
- if (typeForTable == SwitchNumber) {
- int32_t range = max_num - min_num;
- if (min_num <= max_num && range <= 1000 && (range / literalVector.size()) < 10)
- return SwitchInfo::SwitchImmediate;
- return SwitchInfo::SwitchNone;
- }
-
- ASSERT(typeForTable == SwitchString);
-
- if (singleCharacterSwitch) {
- int32_t range = max_num - min_num;
- if (min_num <= max_num && range <= 1000 && (range / literalVector.size()) < 10)
- return SwitchInfo::SwitchCharacter;
- }
-
- return SwitchInfo::SwitchString;
-}
-
-RegisterID* CaseBlockNode::emitBytecodeForBlock(BytecodeGenerator& generator, RegisterID* switchExpression, RegisterID* dst)
-{
- RefPtr<Label> defaultLabel;
- Vector<RefPtr<Label>, 8> labelVector;
- Vector<ExpressionNode*, 8> literalVector;
- int32_t min_num = std::numeric_limits<int32_t>::max();
- int32_t max_num = std::numeric_limits<int32_t>::min();
- SwitchInfo::SwitchType switchType = tryOptimizedSwitch(literalVector, min_num, max_num);
-
- if (switchType != SwitchInfo::SwitchNone) {
- // Prepare the various labels
- for (uint32_t i = 0; i < literalVector.size(); i++)
- labelVector.append(generator.newLabel());
- defaultLabel = generator.newLabel();
- generator.beginSwitch(switchExpression, switchType);
- } else {
- // Setup jumps
- for (ClauseListNode* list = m_list1.get(); list; list = list->getNext()) {
- RefPtr<RegisterID> clauseVal = generator.newTemporary();
- generator.emitNode(clauseVal.get(), list->getClause()->expr());
- generator.emitBinaryOp(op_stricteq, clauseVal.get(), clauseVal.get(), switchExpression, OperandTypes());
- labelVector.append(generator.newLabel());
- generator.emitJumpIfTrue(clauseVal.get(), labelVector[labelVector.size() - 1].get());
- }
-
- for (ClauseListNode* list = m_list2.get(); list; list = list->getNext()) {
- RefPtr<RegisterID> clauseVal = generator.newTemporary();
- generator.emitNode(clauseVal.get(), list->getClause()->expr());
- generator.emitBinaryOp(op_stricteq, clauseVal.get(), clauseVal.get(), switchExpression, OperandTypes());
- labelVector.append(generator.newLabel());
- generator.emitJumpIfTrue(clauseVal.get(), labelVector[labelVector.size() - 1].get());
- }
- defaultLabel = generator.newLabel();
- generator.emitJump(defaultLabel.get());
- }
-
- RegisterID* result = 0;
-
- size_t i = 0;
- for (ClauseListNode* list = m_list1.get(); list; list = list->getNext()) {
- generator.emitLabel(labelVector[i++].get());
- result = statementListEmitCode(list->getClause()->children(), generator, dst);
- }
-
- if (m_defaultClause) {
- generator.emitLabel(defaultLabel.get());
- result = statementListEmitCode(m_defaultClause->children(), generator, dst);
- }
-
- for (ClauseListNode* list = m_list2.get(); list; list = list->getNext()) {
- generator.emitLabel(labelVector[i++].get());
- result = statementListEmitCode(list->getClause()->children(), generator, dst);
- }
- if (!m_defaultClause)
- generator.emitLabel(defaultLabel.get());
-
- ASSERT(i == labelVector.size());
- if (switchType != SwitchInfo::SwitchNone) {
- ASSERT(labelVector.size() == literalVector.size());
- generator.endSwitch(labelVector.size(), labelVector.data(), literalVector.data(), defaultLabel.get(), min_num, max_num);
- }
- return result;
-}
-
-// ------------------------------ SwitchNode -----------------------------------
-
-SwitchNode::~SwitchNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void SwitchNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_expr);
- releaser.release(m_block);
-}
-
-RegisterID* SwitchNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- RefPtr<LabelScope> scope = generator.newLabelScope(LabelScope::Switch);
-
- RefPtr<RegisterID> r0 = generator.emitNode(m_expr.get());
- RegisterID* r1 = m_block->emitBytecodeForBlock(generator, r0.get(), dst);
-
- generator.emitLabel(scope->breakTarget());
- return r1;
-}
-
-// ------------------------------ LabelNode ------------------------------------
-
-LabelNode::~LabelNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void LabelNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_statement);
-}
-
-RegisterID* LabelNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- if (generator.breakTarget(m_name))
- return emitThrowError(generator, SyntaxError, "Duplicate label: %s.", m_name);
-
- RefPtr<LabelScope> scope = generator.newLabelScope(LabelScope::NamedLabel, &m_name);
- RegisterID* r0 = generator.emitNode(dst, m_statement.get());
-
- generator.emitLabel(scope->breakTarget());
- return r0;
-}
-
-// ------------------------------ ThrowNode ------------------------------------
-
-ThrowNode::~ThrowNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void ThrowNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_expr);
-}
+#include "Debugger.h"
+#include "JIT.h"
+#include "JSFunction.h"
+#include "JSGlobalObject.h"
+#include "JSStaticScopeObject.h"
+#include "LabelScope.h"
+#include "Lexer.h"
+#include "Operations.h"
+#include "Parser.h"
+#include "PropertyNameArray.h"
+#include "RegExpObject.h"
+#include "SamplingTool.h"
+#include <wtf/Assertions.h>
+#include <wtf/RefCountedLeakCounter.h>
+#include <wtf/Threading.h>
-RegisterID* ThrowNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- if (dst == generator.ignoredResult())
- dst = 0;
- RefPtr<RegisterID> expr = generator.emitNode(dst, m_expr.get());
- generator.emitExpressionInfo(divot(), startOffset(), endOffset());
- generator.emitThrow(expr.get());
- return dst;
-}
+using namespace WTF;
-// ------------------------------ TryNode --------------------------------------
+namespace JSC {
-TryNode::~TryNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-void TryNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_tryBlock);
- releaser.release(m_catchBlock);
- releaser.release(m_finallyBlock);
-}
+// ------------------------------ StatementNode --------------------------------
-RegisterID* TryNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
+void StatementNode::setLoc(int firstLine, int lastLine)
{
- RefPtr<Label> tryStartLabel = generator.newLabel();
- RefPtr<Label> tryEndLabel = generator.newLabel();
- RefPtr<Label> finallyStart;
- RefPtr<RegisterID> finallyReturnAddr;
- if (m_finallyBlock) {
- finallyStart = generator.newLabel();
- finallyReturnAddr = generator.newTemporary();
- generator.pushFinallyContext(finallyStart.get(), finallyReturnAddr.get());
- }
- generator.emitLabel(tryStartLabel.get());
- generator.emitNode(dst, m_tryBlock.get());
- generator.emitLabel(tryEndLabel.get());
-
- if (m_catchBlock) {
- RefPtr<Label> handlerEndLabel = generator.newLabel();
- generator.emitJump(handlerEndLabel.get());
- RefPtr<RegisterID> exceptionRegister = generator.emitCatch(generator.newTemporary(), tryStartLabel.get(), tryEndLabel.get());
- if (m_catchHasEval) {
- RefPtr<RegisterID> dynamicScopeObject = generator.emitNewObject(generator.newTemporary());
- generator.emitPutById(dynamicScopeObject.get(), m_exceptionIdent, exceptionRegister.get());
- generator.emitMove(exceptionRegister.get(), dynamicScopeObject.get());
- generator.emitPushScope(exceptionRegister.get());
- } else
- generator.emitPushNewScope(exceptionRegister.get(), m_exceptionIdent, exceptionRegister.get());
- generator.emitNode(dst, m_catchBlock.get());
- generator.emitPopScope();
- generator.emitLabel(handlerEndLabel.get());
- }
-
- if (m_finallyBlock) {
- generator.popFinallyContext();
- // there may be important registers live at the time we jump
- // to a finally block (such as for a return or throw) so we
- // ref the highest register ever used as a conservative
- // approach to not clobbering anything important
- RefPtr<RegisterID> highestUsedRegister = generator.highestUsedRegister();
- RefPtr<Label> finallyEndLabel = generator.newLabel();
- generator.emitJumpSubroutine(finallyReturnAddr.get(), finallyStart.get());
- // Use a label to record the subtle fact that sret will return to the
- // next instruction. sret is the only way to jump without an explicit label.
- generator.emitLabel(generator.newLabel().get());
- generator.emitJump(finallyEndLabel.get());
-
- // Finally block for exception path
- RefPtr<RegisterID> tempExceptionRegister = generator.emitCatch(generator.newTemporary(), tryStartLabel.get(), generator.emitLabel(generator.newLabel().get()).get());
- generator.emitJumpSubroutine(finallyReturnAddr.get(), finallyStart.get());
- // Use a label to record the subtle fact that sret will return to the
- // next instruction. sret is the only way to jump without an explicit label.
- generator.emitLabel(generator.newLabel().get());
- generator.emitThrow(tempExceptionRegister.get());
-
- // emit the finally block itself
- generator.emitLabel(finallyStart.get());
- generator.emitNode(dst, m_finallyBlock.get());
- generator.emitSubroutineReturn(finallyReturnAddr.get());
-
- generator.emitLabel(finallyEndLabel.get());
- }
-
- return dst;
+ m_line = firstLine;
+ m_lastLine = lastLine;
}
-// ------------------------------ ParameterNode -----------------------------
+// ------------------------------ SourceElements --------------------------------
-ParameterNode::~ParameterNode()
+void SourceElements::append(StatementNode* statement)
{
- NodeReleaser::releaseAllNodes(this);
+ if (statement->isEmptyStatement())
+ return;
+ m_statements.append(statement);
}
-void ParameterNode::releaseNodes(NodeReleaser& releaser)
+inline StatementNode* SourceElements::singleStatement() const
{
- releaser.release(m_next);
+ size_t size = m_statements.size();
+ return size == 1 ? m_statements[0] : 0;
}
// -----------------------------ScopeNodeData ---------------------------
-ScopeNodeData::ScopeNodeData(SourceElements* children, VarStack* varStack, FunctionStack* funcStack, int numConstants)
+ScopeNodeData::ScopeNodeData(ParserArena& arena, SourceElements* statements, VarStack* varStack, FunctionStack* funcStack, int numConstants)
: m_numConstants(numConstants)
+ , m_statements(statements)
{
+ m_arena.swap(arena);
if (varStack)
- m_varStack = *varStack;
+ m_varStack.swap(*varStack);
if (funcStack)
- m_functionStack = *funcStack;
- if (children)
- children->releaseContentsIntoVector(m_children);
-}
-
-void ScopeNodeData::mark()
-{
- FunctionStack::iterator end = m_functionStack.end();
- for (FunctionStack::iterator ptr = m_functionStack.begin(); ptr != end; ++ptr) {
- FunctionBodyNode* body = (*ptr)->body();
- if (!body->isGenerated())
- continue;
- body->generatedBytecode().mark();
- }
+ m_functionStack.swap(*funcStack);
}
// ------------------------------ ScopeNode -----------------------------
ScopeNode::ScopeNode(JSGlobalData* globalData)
: StatementNode(globalData)
+ , ParserArenaRefCounted(globalData)
, m_features(NoFeatures)
{
-#if ENABLE(OPCODE_SAMPLING)
- globalData->interpreter->sampler()->notifyOfScope(this);
-#endif
}
ScopeNode::ScopeNode(JSGlobalData* globalData, const SourceCode& source, SourceElements* children, VarStack* varStack, FunctionStack* funcStack, CodeFeatures features, int numConstants)
: StatementNode(globalData)
- , m_data(new ScopeNodeData(children, varStack, funcStack, numConstants))
+ , ParserArenaRefCounted(globalData)
+ , m_data(new ScopeNodeData(globalData->parser->arena(), children, varStack, funcStack, numConstants))
, m_features(features)
, m_source(source)
{
-#if ENABLE(OPCODE_SAMPLING)
- globalData->interpreter->sampler()->notifyOfScope(this);
-#endif
-}
-
-ScopeNode::~ScopeNode()
-{
- NodeReleaser::releaseAllNodes(this);
}
-void ScopeNode::releaseNodes(NodeReleaser& releaser)
+StatementNode* ScopeNode::singleStatement() const
{
- if (!m_data)
- return;
- size_t size = m_data->m_children.size();
- for (size_t i = 0; i < size; ++i)
- releaser.release(m_data->m_children[i]);
+ return m_data->m_statements ? m_data->m_statements->singleStatement() : 0;
}
// ------------------------------ ProgramNode -----------------------------
-ProgramNode::ProgramNode(JSGlobalData* globalData, SourceElements* children, VarStack* varStack, FunctionStack* funcStack, const SourceCode& source, CodeFeatures features, int numConstants)
+inline ProgramNode::ProgramNode(JSGlobalData* globalData, SourceElements* children, VarStack* varStack, FunctionStack* funcStack, const SourceCode& source, CodeFeatures features, int numConstants)
: ScopeNode(globalData, source, children, varStack, funcStack, features, numConstants)
{
}
-ProgramNode* ProgramNode::create(JSGlobalData* globalData, SourceElements* children, VarStack* varStack, FunctionStack* funcStack, const SourceCode& source, CodeFeatures features, int numConstants)
-{
- return new ProgramNode(globalData, children, varStack, funcStack, source, features, numConstants);
-}
-
-RegisterID* ProgramNode::emitBytecode(BytecodeGenerator& generator, RegisterID*)
+PassRefPtr<ProgramNode> ProgramNode::create(JSGlobalData* globalData, SourceElements* children, VarStack* varStack, FunctionStack* funcStack, const SourceCode& source, CodeFeatures features, int numConstants)
{
- generator.emitDebugHook(WillExecuteProgram, firstLine(), lastLine());
-
- RefPtr<RegisterID> dstRegister = generator.newTemporary();
- generator.emitLoad(dstRegister.get(), jsUndefined());
- statementListEmitCode(children(), generator, dstRegister.get());
-
- generator.emitDebugHook(DidExecuteProgram, firstLine(), lastLine());
- generator.emitEnd(dstRegister.get());
- return 0;
-}
+ RefPtr<ProgramNode> node = new ProgramNode(globalData, children, varStack, funcStack, source, features, numConstants);
-void ProgramNode::generateBytecode(ScopeChainNode* scopeChainNode)
-{
- ScopeChain scopeChain(scopeChainNode);
- JSGlobalObject* globalObject = scopeChain.globalObject();
-
- m_code.set(new ProgramCodeBlock(this, GlobalCode, globalObject, source().provider()));
-
- BytecodeGenerator generator(this, globalObject->debugger(), scopeChain, &globalObject->symbolTable(), m_code.get());
- generator.generate();
+ ASSERT(node->data()->m_arena.last() == node);
+ node->data()->m_arena.removeLast();
+ ASSERT(!node->data()->m_arena.contains(node.get()));
- destroyData();
+ return node.release();
}
// ------------------------------ EvalNode -----------------------------
-EvalNode::EvalNode(JSGlobalData* globalData, SourceElements* children, VarStack* varStack, FunctionStack* funcStack, const SourceCode& source, CodeFeatures features, int numConstants)
+inline EvalNode::EvalNode(JSGlobalData* globalData, SourceElements* children, VarStack* varStack, FunctionStack* funcStack, const SourceCode& source, CodeFeatures features, int numConstants)
: ScopeNode(globalData, source, children, varStack, funcStack, features, numConstants)
{
}
-EvalNode* EvalNode::create(JSGlobalData* globalData, SourceElements* children, VarStack* varStack, FunctionStack* funcStack, const SourceCode& source, CodeFeatures features, int numConstants)
-{
- return new EvalNode(globalData, children, varStack, funcStack, source, features, numConstants);
-}
-
-RegisterID* EvalNode::emitBytecode(BytecodeGenerator& generator, RegisterID*)
-{
- generator.emitDebugHook(WillExecuteProgram, firstLine(), lastLine());
-
- RefPtr<RegisterID> dstRegister = generator.newTemporary();
- generator.emitLoad(dstRegister.get(), jsUndefined());
- statementListEmitCode(children(), generator, dstRegister.get());
-
- generator.emitDebugHook(DidExecuteProgram, firstLine(), lastLine());
- generator.emitEnd(dstRegister.get());
- return 0;
-}
-
-void EvalNode::generateBytecode(ScopeChainNode* scopeChainNode)
+PassRefPtr<EvalNode> EvalNode::create(JSGlobalData* globalData, SourceElements* children, VarStack* varStack, FunctionStack* funcStack, const SourceCode& source, CodeFeatures features, int numConstants)
{
- ScopeChain scopeChain(scopeChainNode);
- JSGlobalObject* globalObject = scopeChain.globalObject();
-
- m_code.set(new EvalCodeBlock(this, globalObject, source().provider(), scopeChain.localDepth()));
+ RefPtr<EvalNode> node = new EvalNode(globalData, children, varStack, funcStack, source, features, numConstants);
- BytecodeGenerator generator(this, globalObject->debugger(), scopeChain, &m_code->symbolTable(), m_code.get());
- generator.generate();
+ ASSERT(node->data()->m_arena.last() == node);
+ node->data()->m_arena.removeLast();
+ ASSERT(!node->data()->m_arena.contains(node.get()));
- // Eval code needs to hang on to its declaration stacks to keep declaration info alive until Interpreter::execute time,
- // so the entire ScopeNodeData cannot be destoyed.
- children().clear();
+ return node.release();
}
-EvalCodeBlock& EvalNode::bytecodeForExceptionInfoReparse(ScopeChainNode* scopeChainNode, CodeBlock* codeBlockBeingRegeneratedFrom)
-{
- ASSERT(!m_code);
-
- ScopeChain scopeChain(scopeChainNode);
- JSGlobalObject* globalObject = scopeChain.globalObject();
-
- m_code.set(new EvalCodeBlock(this, globalObject, source().provider(), scopeChain.localDepth()));
-
- BytecodeGenerator generator(this, globalObject->debugger(), scopeChain, &m_code->symbolTable(), m_code.get());
- generator.setRegeneratingForExceptionInfo(codeBlockBeingRegeneratedFrom);
- generator.generate();
-
- return *m_code;
-}
+// ------------------------------ FunctionBodyNode -----------------------------
-void EvalNode::mark()
+FunctionParameters::FunctionParameters(ParameterNode* firstParameter)
{
- // We don't need to mark our own CodeBlock as the JSGlobalObject takes care of that
- data()->mark();
+ for (ParameterNode* parameter = firstParameter; parameter; parameter = parameter->nextParam())
+ append(parameter->ident());
}
-// ------------------------------ FunctionBodyNode -----------------------------
-
-FunctionBodyNode::FunctionBodyNode(JSGlobalData* globalData)
+inline FunctionBodyNode::FunctionBodyNode(JSGlobalData* globalData)
: ScopeNode(globalData)
- , m_parameters(0)
- , m_parameterCount(0)
- , m_refCount(0)
{
}
-FunctionBodyNode::FunctionBodyNode(JSGlobalData* globalData, SourceElements* children, VarStack* varStack, FunctionStack* funcStack, const SourceCode& sourceCode, CodeFeatures features, int numConstants)
+inline FunctionBodyNode::FunctionBodyNode(JSGlobalData* globalData, SourceElements* children, VarStack* varStack, FunctionStack* funcStack, const SourceCode& sourceCode, CodeFeatures features, int numConstants)
: ScopeNode(globalData, sourceCode, children, varStack, funcStack, features, numConstants)
- , m_parameters(0)
- , m_parameterCount(0)
- , m_refCount(0)
{
}
-FunctionBodyNode::~FunctionBodyNode()
+void FunctionBodyNode::finishParsing(const SourceCode& source, ParameterNode* firstParameter, const Identifier& ident)
{
- ASSERT(!m_refCount);
- for (size_t i = 0; i < m_parameterCount; ++i)
- m_parameters[i].~Identifier();
- fastFree(m_parameters);
-}
-
-void FunctionBodyNode::finishParsing(const SourceCode& source, ParameterNode* firstParameter)
-{
- Vector<Identifier> parameters;
- for (ParameterNode* parameter = firstParameter; parameter; parameter = parameter->nextParam())
- parameters.append(parameter->ident());
- size_t count = parameters.size();
-
setSource(source);
- finishParsing(parameters.releaseBuffer(), count);
+ finishParsing(FunctionParameters::create(firstParameter), ident);
}
-void FunctionBodyNode::finishParsing(Identifier* parameters, size_t parameterCount)
+void FunctionBodyNode::finishParsing(PassRefPtr<FunctionParameters> parameters, const Identifier& ident)
{
ASSERT(!source().isNull());
m_parameters = parameters;
- m_parameterCount = parameterCount;
-}
-
-void FunctionBodyNode::mark()
-{
- if (m_code)
- m_code->mark();
+ m_ident = ident;
}
FunctionBodyNode* FunctionBodyNode::create(JSGlobalData* globalData)
return new FunctionBodyNode(globalData);
}
-FunctionBodyNode* FunctionBodyNode::create(JSGlobalData* globalData, SourceElements* children, VarStack* varStack, FunctionStack* funcStack, const SourceCode& sourceCode, CodeFeatures features, int numConstants)
-{
- return new FunctionBodyNode(globalData, children, varStack, funcStack, sourceCode, features, numConstants);
-}
-
-void FunctionBodyNode::generateBytecode(ScopeChainNode* scopeChainNode)
-{
- // This branch is only necessary since you can still create a non-stub FunctionBodyNode by
- // calling Parser::parse<FunctionBodyNode>().
- if (!data())
- scopeChainNode->globalData->parser->reparseInPlace(scopeChainNode->globalData, this);
- ASSERT(data());
-
- ScopeChain scopeChain(scopeChainNode);
- JSGlobalObject* globalObject = scopeChain.globalObject();
-
- m_code.set(new CodeBlock(this, FunctionCode, source().provider(), source().startOffset()));
-
- BytecodeGenerator generator(this, globalObject->debugger(), scopeChain, &m_code->symbolTable(), m_code.get());
- generator.generate();
-
- destroyData();
-}
-
-CodeBlock& FunctionBodyNode::bytecodeForExceptionInfoReparse(ScopeChainNode* scopeChainNode, CodeBlock* codeBlockBeingRegeneratedFrom)
-{
- ASSERT(!m_code);
-
- ScopeChain scopeChain(scopeChainNode);
- JSGlobalObject* globalObject = scopeChain.globalObject();
-
- m_code.set(new CodeBlock(this, FunctionCode, source().provider(), source().startOffset()));
-
- BytecodeGenerator generator(this, globalObject->debugger(), scopeChain, &m_code->symbolTable(), m_code.get());
- generator.setRegeneratingForExceptionInfo(codeBlockBeingRegeneratedFrom);
- generator.generate();
-
- return *m_code;
-}
-
-RegisterID* FunctionBodyNode::emitBytecode(BytecodeGenerator& generator, RegisterID*)
-{
- generator.emitDebugHook(DidEnterCallFrame, firstLine(), lastLine());
- statementListEmitCode(children(), generator, generator.ignoredResult());
- if (children().size() && children().last()->isBlock()) {
- BlockNode* blockNode = static_cast<BlockNode*>(children().last().get());
- if (blockNode->children().size() && blockNode->children().last()->isReturnNode())
- return 0;
- }
-
- RegisterID* r0 = generator.emitLoad(0, jsUndefined());
- generator.emitDebugHook(WillLeaveCallFrame, firstLine(), lastLine());
- generator.emitReturn(r0);
- return 0;
-}
-
-UString FunctionBodyNode::paramString() const
-{
- UString s("");
- for (size_t pos = 0; pos < m_parameterCount; ++pos) {
- if (!s.isEmpty())
- s += ", ";
- s += parameters()[pos].ustring();
- }
-
- return s;
-}
-
-Identifier* FunctionBodyNode::copyParameters()
-{
- Identifier* parameters = static_cast<Identifier*>(fastMalloc(m_parameterCount * sizeof(Identifier)));
- VectorCopier<false, Identifier>::uninitializedCopy(m_parameters, m_parameters + m_parameterCount, parameters);
- return parameters;
-}
-
-// ------------------------------ FuncDeclNode ---------------------------------
-
-FuncDeclNode::~FuncDeclNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void FuncDeclNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_parameter);
- releaser.release(m_body);
-}
-
-JSFunction* FuncDeclNode::makeFunction(ExecState* exec, ScopeChainNode* scopeChain)
-{
- return new (exec) JSFunction(exec, m_ident, m_body.get(), scopeChain);
-}
-
-RegisterID* FuncDeclNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
-{
- if (dst == generator.ignoredResult())
- dst = 0;
- return dst;
-}
-
-// ------------------------------ FuncExprNode ---------------------------------
-
-FuncExprNode::~FuncExprNode()
-{
- NodeReleaser::releaseAllNodes(this);
-}
-
-void FuncExprNode::releaseNodes(NodeReleaser& releaser)
-{
- releaser.release(m_parameter);
- releaser.release(m_body);
-}
-
-RegisterID* FuncExprNode::emitBytecode(BytecodeGenerator& generator, RegisterID* dst)
+PassRefPtr<FunctionBodyNode> FunctionBodyNode::create(JSGlobalData* globalData, SourceElements* children, VarStack* varStack, FunctionStack* funcStack, const SourceCode& sourceCode, CodeFeatures features, int numConstants)
{
- return generator.emitNewFunctionExpression(generator.finalDestination(dst), this);
-}
-
-JSFunction* FuncExprNode::makeFunction(ExecState* exec, ScopeChainNode* scopeChain)
-{
- JSFunction* func = new (exec) JSFunction(exec, m_ident, m_body.get(), scopeChain);
-
- /*
- The Identifier in a FunctionExpression can be referenced from inside
- the FunctionExpression's FunctionBody to allow the function to call
- itself recursively. However, unlike in a FunctionDeclaration, the
- Identifier in a FunctionExpression cannot be referenced from and
- does not affect the scope enclosing the FunctionExpression.
- */
+ RefPtr<FunctionBodyNode> node = new FunctionBodyNode(globalData, children, varStack, funcStack, sourceCode, features, numConstants);
- if (!m_ident.isNull()) {
- JSStaticScopeObject* functionScopeObject = new (exec) JSStaticScopeObject(exec, m_ident, func, ReadOnly | DontDelete);
- func->scope().push(functionScopeObject);
- }
+ ASSERT(node->data()->m_arena.last() == node);
+ node->data()->m_arena.removeLast();
+ ASSERT(!node->data()->m_arena.contains(node.get()));
- return func;
+ return node.release();
}
} // namespace JSC
projects / apple / javascriptcore.git / blobdiff