/**

 * @class

<pre>

This is a lightly modified version of Kevin Jones' JavaScript

library Data.Dump. To download the original visit:

    <a href="http://openjsan.org/doc/k/ke/kevinj/Data/Dump/">http://openjsan.org/doc/k/ke/kevinj/Data/Dump/</a>

AUTHORS

The Data.Dump JavaScript module is written by Kevin Jones 

(kevinj@cpan.org), based on Data::Dump by Gisle Aas (gisle@aas.no),

based on Data::Dumper by Gurusamy Sarathy (gsar@umich.edu).

COPYRIGHT

Copyright 2007 Kevin Jones. Copyright 1998-2000,2003-2004 Gisle Aas.

Copyright 1996-1998 Gurusamy Sarathy.

This program is free software; you can redistribute it and/or modify

it under the terms of the Perl Artistic License

See http://www.perl.com/perl/misc/Artistic.html

</pre>

 * @static

 */

Dumper = {

	/** @param [...] The objects to dump. */

	dump: function () {

	    if (arguments.length > 1)

	        return this._dump(arguments);

	    else if (arguments.length == 1)

	        return this._dump(arguments[0]);

	    else

	        return "()";

	},

	_dump: function (obj) {

		if (typeof obj == 'undefined') return 'undefined';

		var out;

		if (obj.serialize) { return obj.serialize(); }

		var type = this._typeof(obj);

		if (obj.circularReference) obj.circularReference++;

		switch (type) {

			case 'circular':

				out = "{ //circularReference\n}";

				break;

			case 'object':

				var pairs = new Array;

				for (var prop in obj) {

					if (prop != "circularReference" && obj.hasOwnProperty(prop)) { //hide inherited properties

						pairs.push(prop + ': ' + this._dump(obj[prop]));

					}

				}

				out = '{' + this._format_list(pairs) + '}';

				break;

			case 'string':

				for (var prop in Dumper.ESC) {

					if (Dumper.ESC.hasOwnProperty(prop)) {

						obj = obj.replace(prop, Dumper.ESC[prop]);

					}

				}

			// Escape UTF-8 Strings

				if (obj.match(/^[\x00-\x7f]*$/)) {

					out = '"' + obj.replace(/\"/g, "\\\"").replace(/([\n\r]+)/g, "\\$1") + '"';

				}

				else {

					out = "unescape('"+escape(obj)+"')";

				}

				break;

			case 'array':

				var elems = new Array;

				for (var i=0; i<obj.length; i++) {

					elems.push( this._dump(obj[i]) );

				}

				out = '[' + this._format_list(elems) + ']';

				break;

			case 'date':

			// firefox returns GMT strings from toUTCString()...

			var utc_string = obj.toUTCString().replace(/GMT/,'UTC');

				out = 'new Date("' + utc_string + '")';

				break;

			case 'element':

				// DOM element

				out = this._dump_dom(obj);

				break;

				default:

					out = obj;

		}

		out = String(out).replace(/\n/g, '\n    ');

		out = out.replace(/\n    (.*)$/,"\n$1");

		return out;

	},

	_format_list: function (list) {

		if (!list.length) return '';

		var nl = list.toString().length > 60 ? '\n' : ' ';

		return nl + list.join(',' + nl) + nl;

    },

    _typeof: function (obj) {

    	if (obj && obj.circularReference && obj.circularReference > 1) return 'circular';

		if (Array.prototype.isPrototypeOf(obj)) return 'array';

		if (Date.prototype.isPrototypeOf(obj)) return 'date';

		if (typeof obj.nodeType != 'undefined') return 'element';

		return typeof(obj);

	},

	_dump_dom: function (obj) {

		return '"' + Dumper.nodeTypes[obj.nodeType] + '"';

	}

};

Dumper.ESC = {

    "\t": "\\t",

    "\n": "\\n",

    "\f": "\\f"

};

Dumper.nodeTypes = {

    1: "ELEMENT_NODE",

    2: "ATTRIBUTE_NODE",

    3: "TEXT_NODE",

    4: "CDATA_SECTION_NODE",

    5: "ENTITY_REFERENCE_NODE",

    6: "ENTITY_NODE",

    7: "PROCESSING_INSTRUCTION_NODE",

    8: "COMMENT_NODE",

    9: "DOCUMENT_NODE",

    10: "DOCUMENT_TYPE_NODE",

    11: "DOCUMENT_FRAGMENT_NODE",

    12: "NOTATION_NODE"

};