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author | Steve Block <steveblock@google.com> | 2009-11-05 09:23:40 +0000 |
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committer | Steve Block <steveblock@google.com> | 2009-11-10 22:41:12 +0000 |
commit | cac0f67c402d107cdb10971b95719e2ff9c7c76b (patch) | |
tree | d182c7f87211c6f201a5f038e332336493ebdbe7 /JavaScriptCore/parser | |
parent | 4b2ef0f288e7c6c4602f621b7a0e9feed304b70e (diff) | |
download | external_webkit-cac0f67c402d107cdb10971b95719e2ff9c7c76b.zip external_webkit-cac0f67c402d107cdb10971b95719e2ff9c7c76b.tar.gz external_webkit-cac0f67c402d107cdb10971b95719e2ff9c7c76b.tar.bz2 |
Merge webkit.org at r50258 : Initial merge by git.
Change-Id: I1a9e1dc4ed654b69174ad52a4f031a07240f37b0
Diffstat (limited to 'JavaScriptCore/parser')
-rw-r--r-- | JavaScriptCore/parser/Grammar.y | 2 | ||||
-rw-r--r-- | JavaScriptCore/parser/Lexer.cpp | 6 | ||||
-rw-r--r-- | JavaScriptCore/parser/Lexer.h | 6 | ||||
-rw-r--r-- | JavaScriptCore/parser/Nodes.cpp | 21 |
4 files changed, 23 insertions, 12 deletions
diff --git a/JavaScriptCore/parser/Grammar.y b/JavaScriptCore/parser/Grammar.y index 85fd163..6d953df 100644 --- a/JavaScriptCore/parser/Grammar.y +++ b/JavaScriptCore/parser/Grammar.y @@ -27,6 +27,7 @@ #include "JSObject.h" #include "JSString.h" +#include "Lexer.h" #include "NodeConstructors.h" #include "NodeInfo.h" #include <stdlib.h> @@ -48,7 +49,6 @@ #define YYERROR_VERBOSE #endif -int jscyylex(void* lvalp, void* llocp, void* globalPtr); int jscyyerror(const char*); static inline bool allowAutomaticSemicolon(JSC::Lexer&, int); diff --git a/JavaScriptCore/parser/Lexer.cpp b/JavaScriptCore/parser/Lexer.cpp index 785b219..df30838 100644 --- a/JavaScriptCore/parser/Lexer.cpp +++ b/JavaScriptCore/parser/Lexer.cpp @@ -46,12 +46,6 @@ using namespace JSC; #include "Lookup.h" #include "Lexer.lut.h" -// A bridge for yacc from the C world to the C++ world. -int jscyylex(void* lvalp, void* llocp, void* globalData) -{ - return static_cast<JSGlobalData*>(globalData)->lexer->lex(lvalp, llocp); -} - namespace JSC { static const UChar byteOrderMark = 0xFEFF; diff --git a/JavaScriptCore/parser/Lexer.h b/JavaScriptCore/parser/Lexer.h index 174e05a..c76696c 100644 --- a/JavaScriptCore/parser/Lexer.h +++ b/JavaScriptCore/parser/Lexer.h @@ -136,6 +136,12 @@ namespace JSC { return (convertHex(c1, c2) << 8) | convertHex(c3, c4); } + // A bridge for yacc from the C world to the C++ world. + inline int jscyylex(void* lvalp, void* llocp, void* globalData) + { + return static_cast<JSGlobalData*>(globalData)->lexer->lex(lvalp, llocp); + } + } // namespace JSC #endif // Lexer_h diff --git a/JavaScriptCore/parser/Nodes.cpp b/JavaScriptCore/parser/Nodes.cpp index 3bd318a..45009dc 100644 --- a/JavaScriptCore/parser/Nodes.cpp +++ b/JavaScriptCore/parser/Nodes.cpp @@ -1468,20 +1468,24 @@ RegisterID* ForInNode::emitBytecode(BytecodeGenerator& generator, RegisterID* ds 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); - RegisterID* forInBase = generator.emitNode(m_expr); - RefPtr<RegisterID> iter = generator.emitGetPropertyNames(generator.newTemporary(), forInBase); + + RefPtr<RegisterID> base = generator.newTemporary(); + generator.emitNode(base.get(), m_expr); + RefPtr<RegisterID> i = generator.newTemporary(); + RefPtr<RegisterID> size = generator.newTemporary(); + RefPtr<RegisterID> expectedSubscript; + RefPtr<RegisterID> iter = generator.emitGetPropertyNames(generator.newTemporary(), base.get(), i.get(), size.get(), scope->breakTarget()); generator.emitJump(scope->continueTarget()); RefPtr<Label> loopStart = generator.newLabel(); generator.emitLabel(loopStart.get()); RegisterID* propertyName; + bool optimizedForinAccess = false; if (m_lexpr->isResolveNode()) { const Identifier& ident = static_cast<ResolveNode*>(m_lexpr)->identifier(); propertyName = generator.registerFor(ident); @@ -1492,6 +1496,10 @@ RegisterID* ForInNode::emitBytecode(BytecodeGenerator& generator, RegisterID* ds generator.emitExpressionInfo(divot(), startOffset(), endOffset()); generator.emitPutById(base, ident, propertyName); + } else { + expectedSubscript = generator.emitMove(generator.newTemporary(), propertyName); + generator.pushOptimisedForIn(expectedSubscript.get(), iter.get(), i.get(), propertyName); + optimizedForinAccess = true; } } else if (m_lexpr->isDotAccessorNode()) { DotAccessorNode* assignNode = static_cast<DotAccessorNode*>(m_lexpr); @@ -1516,8 +1524,11 @@ RegisterID* ForInNode::emitBytecode(BytecodeGenerator& generator, RegisterID* ds generator.emitNode(dst, m_statement); + if (optimizedForinAccess) + generator.popOptimisedForIn(); + generator.emitLabel(scope->continueTarget()); - generator.emitNextPropertyName(propertyName, iter.get(), loopStart.get()); + generator.emitNextPropertyName(propertyName, base.get(), i.get(), size.get(), iter.get(), loopStart.get()); generator.emitDebugHook(WillExecuteStatement, firstLine(), lastLine()); generator.emitLabel(scope->breakTarget()); return dst; |