convert while into for

2012-11-05 16:01:20 +02:00
parent fba0c1aafe
commit ffccb233e5
1 changed files with 9 additions and 0 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -1118,6 +1118,15 @@ merge(Compressor.prototype, {
        return self;
    });

+    OPT(AST_While, function(self, compressor) {
+        if (!compressor.option("loops")) return self;
+        self = AST_DWLoop.prototype.optimize.call(self, compressor);
+        if (self instanceof AST_While) {
+            self = make_node(AST_For, self, self);
+        }
+        return self;
+    });
+
    OPT(AST_For, function(self, compressor){
        var cond = self.condition;
        if (cond) {