/* vim: set expandtab tabstop=4 softtabstop=4 shiftwidth=4:        *
 *******************************************************************
 * Project: Function Enchant                                       *
 * Version: 1.01                                                   *
 * Author:  RabiatoR <rabiator@xaker.ru>                           *
 *******************************************************************
 * JavaScript "Function" object functionnaly enchant library
 * Includes:
 *  Func    Function().bind( [Mixed scope] );
 *  Func    Function().checker( Array arguments_types [, Number arguments_min] );
 *
 * Changelog:
 *  [1.01]
 *  Syntax reformatted.
 *  [1.0]
 *  First release.
 *
 *
*/

    /**//**//**//**//**//**//**//**//**//**//**//**//**//**//**//**/





 /*
  * Syntax:  Function().bind( [Mixed scope] );
  * Return:  Function;
  *****************************************************************/
if( typeof( Function.prototype.bind ) == 'undefined' ){
    Function.prototype.bind  = function( scope ){
        var self = this;
        return function(){
            return self.apply( scope, arguments );
        }
    }
}

 /*
  * Syntax:  Function().checker( Array arguments_types [, Number arguments_min] );
  * Return:  Function;
  * Commnt:  Allowed types( "Any", [String,Number,"Function",Object,Date], String, Number, "Function", Object, Date );
  *****************************************************************/
if( typeof( Function.prototype.checker ) == 'undefined' ){
    Function.prototype.checker  = function( arguments_types, arguments_min ){
        var self = this;
        var args = [];
        var argc = arguments_min;
        if( typeof( argc ) == 'undefined' ){
            argc = null;
        }else{
            argc = parseInt( argc, 10 );
            if( isNaN( argc ) || argc < 0 ){
                argc = null;
            }
        }
        for( var k in arguments_types ){
            var type = arguments_types[k];
            if( typeof( type ) == "function" ){
                type = arguments_types[k].toString().match( /function\s*([\w\$]*)\s*\(/ )[1];
            }else if( typeof( type ) == "object" && type instanceof Array ){
                type = [];
                for( var _k in arguments_types[k] ){
                    type[type.length] = arguments_types[k][_k];
                    if( typeof( type[type.length-1] ) == "function" ){
                        type[type.length-1] = arguments_types[k][_k].toString().match( /function\s*([\w\$]*)\s*\(/ )[1];
                    }
                }
            }
            if( typeof( type ) == "string" ){
                type = type.toLowerCase();
            }else{
                for( var _k in type ){
                    type[_k] = type[_k].toLowerCase();
                }
            }
            args[args.length] = type;
        }
        return function(){
            if( argc !== null ){
                if( arguments.length != argc ){
                    return false;
                }
            }
            for( var i = 0, l = args.length; i < l; i++ ){
                if( typeof( args[i] ) == 'string' ){
                    if( args[i] != 'any' && typeof( arguments[i] ) != args[i] ){
                        return false;
                    }
                }else if( typeof( args[i] ) == 'object' && args[i] instanceof Array ){
                    var success = false;
                    for( var j = 0, m = args[i].length; j < m; j++ ){
                        if( typeof( arguments[i] ) == args[i][j] ){
                            success = true;
                            break;
                        }
                    }
                    if( !success ){
                        return false;
                    }
                }
            }
            return self.apply( this, arguments );
        }
    }
}