Files
zulip/node_modules/handlebars/node_modules/uglify-js/lib/squeeze-more.js
Keegan McAllister 9b9d85eb36 Import Handlebars compiler and dependencies
Storing these in Git seems kind of weird, but seems to be [1] the done thing.
I have to say, it's a lot more appealing than getting 3 packages from npm
installed globally on every prod and dev machine -- we already have too much of
that with 'pip install'.

We can upgrade these in the future by running 'npm update' in the repo root
directory.

[1] http://www.futurealoof.com/posts/nodemodules-in-git.html

(imported from commit 60a9d6a7cafe742442d87e9f3abc25750e179780)
2013-04-02 14:43:58 -04:00

74 lines
3.5 KiB
JavaScript

var jsp = require("./parse-js"),
pro = require("./process"),
slice = jsp.slice,
member = jsp.member,
curry = jsp.curry,
MAP = pro.MAP,
PRECEDENCE = jsp.PRECEDENCE,
OPERATORS = jsp.OPERATORS;
function ast_squeeze_more(ast) {
var w = pro.ast_walker(), walk = w.walk, scope;
function with_scope(s, cont) {
var save = scope, ret;
scope = s;
ret = cont();
scope = save;
return ret;
};
function _lambda(name, args, body) {
return [ this[0], name, args, with_scope(body.scope, curry(MAP, body, walk)) ];
};
return w.with_walkers({
"toplevel": function(body) {
return [ this[0], with_scope(this.scope, curry(MAP, body, walk)) ];
},
"function": _lambda,
"defun": _lambda,
"new": function(ctor, args) {
if (ctor[0] == "name") {
if (ctor[1] == "Array" && !scope.has("Array")) {
if (args.length != 1) {
return [ "array", args ];
} else {
return walk([ "call", [ "name", "Array" ], args ]);
}
} else if (ctor[1] == "Object" && !scope.has("Object")) {
if (!args.length) {
return [ "object", [] ];
} else {
return walk([ "call", [ "name", "Object" ], args ]);
}
} else if ((ctor[1] == "RegExp" || ctor[1] == "Function" || ctor[1] == "Error") && !scope.has(ctor[1])) {
return walk([ "call", [ "name", ctor[1] ], args]);
}
}
},
"call": function(expr, args) {
if (expr[0] == "dot" && expr[1][0] == "string" && args.length == 1
&& (args[0][1] > 0 && expr[2] == "substring" || expr[2] == "substr")) {
return [ "call", [ "dot", expr[1], "slice"], args];
}
if (expr[0] == "dot" && expr[2] == "toString" && args.length == 0) {
// foo.toString() ==> foo+""
return [ "binary", "+", expr[1], [ "string", "" ]];
}
if (expr[0] == "name") {
if (expr[1] == "Array" && args.length != 1 && !scope.has("Array")) {
return [ "array", args ];
}
if (expr[1] == "Object" && !args.length && !scope.has("Object")) {
return [ "object", [] ];
}
if (expr[1] == "String" && !scope.has("String")) {
return [ "binary", "+", args[0], [ "string", "" ]];
}
}
}
}, function() {
return walk(pro.ast_add_scope(ast));
});
};
exports.ast_squeeze_more = ast_squeeze_more;