Replace build system with a faster new one that uses Node and UglifyJS and generates...

[jquery.git] / build / lib / squeeze-more.js

diff --git a/build/lib/squeeze-more.js b/build/lib/squeeze-more.js
new file mode 100644 (file)
index 0000000..12380af
--- /dev/null
+++ b/build/lib/squeeze-more.js
@@ -0,0 +1,22 @@
+var jsp = require("./parse-js"),
+    pro = require("./process"),
+    slice = jsp.slice,
+    member = jsp.member,
+    PRECEDENCE = jsp.PRECEDENCE,
+    OPERATORS = jsp.OPERATORS;
+
+function ast_squeeze_more(ast) {
+        var w = pro.ast_walker(), walk = w.walk;
+        return w.with_walkers({
+                "call": function(expr, args) {
+                        if (expr[0] == "dot" && expr[2] == "toString" && args.length == 0) {
+                                // foo.toString()  ==>  foo+""
+                                return [ "binary", "+", expr[1], [ "string", "" ]];
+                        }
+                }
+        }, function() {
+                return walk(ast);
+        });
+};
+
+exports.ast_squeeze_more = ast_squeeze_more;