X-Git-Url: https://git.webkit.org/?p=WebKit.git;a=blobdiff_plain;f=JavaScriptCore%2Fkjs%2Fgrammar.y;h=d60554792b4f6383fa43014466ee1d93a350b4a8;hp=81e84b37d31277aa2f5a2a6eac52918861963753;hb=9b5c619a686f6f952b3ef5e4b3ec0cd42e029aeb;hpb=a55bd2bb4be21f2218bc63f4976691ca16ad5ec3

diff --git a/JavaScriptCore/kjs/grammar.y b/JavaScriptCore/kjs/grammar.y
index 81e84b37d312..d60554792b4f 100644
--- a/JavaScriptCore/kjs/grammar.y
+++ b/JavaScriptCore/kjs/grammar.y
@@ -1424,13 +1424,26 @@ static ExpressionNode* makeBitwiseNotNode(void* globalPtr, ExpressionNode* expr)
 
 static ExpressionNode* makeMultNode(void* globalPtr, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments)
 {
+    expr1 = expr1->stripUnaryPlus();
+    expr2 = expr2->stripUnaryPlus();
+
     if (expr1->isNumber() && expr2->isNumber())
         return makeNumberNode(globalPtr, static_cast<NumberNode*>(expr1)->value() * static_cast<NumberNode*>(expr2)->value());
+
+    if (expr1->isNumber() && static_cast<NumberNode*>(expr1)->value() == 1)
+        return new UnaryPlusNode(GLOBAL_DATA, expr2);
+
+    if (expr2->isNumber() && static_cast<NumberNode*>(expr2)->value() == 1)
+        return new UnaryPlusNode(GLOBAL_DATA, expr1);
+
     return new MultNode(GLOBAL_DATA, expr1, expr2, rightHasAssignments);
 }
 
 static ExpressionNode* makeDivNode(void* globalPtr, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments)
 {
+    expr1 = expr1->stripUnaryPlus();
+    expr2 = expr2->stripUnaryPlus();
+
     if (expr1->isNumber() && expr2->isNumber())
         return makeNumberNode(globalPtr, static_cast<NumberNode*>(expr1)->value() / static_cast<NumberNode*>(expr2)->value());
     return new DivNode(GLOBAL_DATA, expr1, expr2, rightHasAssignments);
@@ -1445,6 +1458,9 @@ static ExpressionNode* makeAddNode(void* globalPtr, ExpressionNode* expr1, Expre
 
 static ExpressionNode* makeSubNode(void* globalPtr, ExpressionNode* expr1, ExpressionNode* expr2, bool rightHasAssignments)
 {
+    expr1 = expr1->stripUnaryPlus();
+    expr2 = expr2->stripUnaryPlus();
+
     if (expr1->isNumber() && expr2->isNumber())
         return makeNumberNode(globalPtr, static_cast<NumberNode*>(expr1)->value() - static_cast<NumberNode*>(expr2)->value());
     return new SubNode(GLOBAL_DATA, expr1, expr2, rightHasAssignments);