Javascript写的Java －－－ j语言

这次真的把java的语法写成javascript了，看起来太熟悉了。

先给个例子：

 

j('package j.unit', function() {
    /**
     * @class j.unit.Observable
     */
    j('class Observable', function(jsuper) {

        return {

            constructor:function() {
                jsuper.constructor.call(this);
            }


        }

    });
});


j('package jui', function() {

    j('import j.unit.Observable;');
    j('import j.unit.*;');

    j('class Component', {

        constructor:function() {

        },
        show:function() {
            console.log("good");
        }

    });

    j('class Container extends Component implements Observable', function(jsuper, ob) {

        return {

            constructor:function() {
                jsuper.constructor.call(this);
                ob.constructor.call(this);
            }


        }

    });


});

 

附上实现代码：

 

function j() {
    var def, code;
    def = arguments[0];
    if (arguments.length == 2) {
        code = arguments[1];
    }
    if (J.isArray(def)) {
        def = def.join(' ');
    }
    var defs = def.replace(/\s{1,}/g, ' ').split(/\s/);
    var l = defs.length;
    if (l % 2 != 0) {
        throw new Error("[jjava] def error");
    }
    var args = [];
    for (var i = 0; i < l; i += 2) {
        switch (defs[i]) {
            case "package":
                return jpackage.call(this, defs[i + 1], code);
            case "import":
                return jimport.call(this, defs[i + 1]);
            case "class":
                args[0] = defs[i + 1];
                break;
            case "extends":
                args[1] = defs[i + 1];
                break;
            case "implements":
                args = args.concat(defs[i + 1].replace(/\s/).split(","));
                break;
        }
    }
    args.push(code);

    return jclass.apply(this, args);

}

 其中的 jpackage,jimport,jclass 请看 http://openxtiger.iteye.com/blog/1708715