libs/js/jquery-mobile-1.2.0/node_modules/grunt/node_modules/nodeunit/node_modules/tap/node_modules/runforcover/node_modules/bunker/node_modules/burrito/node_modules/uglify-js/lib/squeeze-more.js

   1 var jsp = require("./parse-js"),
   2     pro = require("./process"),
   3     slice = jsp.slice,
   4     member = jsp.member,
   5     curry = jsp.curry,
   6     MAP = pro.MAP,
   7     PRECEDENCE = jsp.PRECEDENCE,
   8     OPERATORS = jsp.OPERATORS;
   9
  10 function ast_squeeze_more(ast) {
  11         var w = pro.ast_walker(), walk = w.walk, scope;
  12         function with_scope(s, cont) {
  13                 var save = scope, ret;
  14                 scope = s;
  15                 ret = cont();
  16                 scope = save;
  17                 return ret;
  18         };
  19         function _lambda(name, args, body) {
  20                 return [ this[0], name, args, with_scope(body.scope, curry(MAP, body, walk)) ];
  21         };
  22         return w.with_walkers({
  23                 "toplevel": function(body) {
  24                         return [ this[0], with_scope(this.scope, curry(MAP, body, walk)) ];
  25                 },
  26                 "function": _lambda,
  27                 "defun": _lambda,
  28                 "new": function(ctor, args) {
  29                         if (ctor[0] == "name" && ctor[1] == "Array" && !scope.has("Array")) {
  30                                 if (args.length != 1) {
  31                                         return [ "array", args ];
  32                                 } else {
  33                                         return walk([ "call", [ "name", "Array" ], args ]);
  34                                 }
  35                         }
  36                 },
  37                 "call": function(expr, args) {
  38                         if (expr[0] == "dot" && expr[2] == "toString" && args.length == 0) {
  39                                 // foo.toString()  ==>  foo+""
  40                                 return [ "binary", "+", expr[1], [ "string", "" ]];
  41                         }
  42                         if (expr[0] == "name" && expr[1] == "Array" && args.length != 1 && !scope.has("Array")) {
  43                                 return [ "array", args ];
  44                         }
  45                 }
  46         }, function() {
  47                 return walk(pro.ast_add_scope(ast));
  48         });
  49 };
  50
  51 exports.ast_squeeze_more = ast_squeeze_more;