78 lines
2.0 KiB
JavaScript
78 lines
2.0 KiB
JavaScript
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var bridges = {};
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bridges.call = function (func, target, args) {
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var arr = [];
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var len = args.length;
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for (var i = 0; i < len; i++) {
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arr.push(wrap(args[i]));
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}
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return func.apply(target, arr);
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};
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/*
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Java Object: 拥有getClass, notify, toString, hashCode, equals等函数
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没有prototype, __proto__, constructor等属性
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使用obj.xxx时如果没有xxx属性可能会直接抛出异常而不是undefined？？？
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只能使用in关键字来判断某个属性是否存在(但in关键字不能用于JavaScript基本类型)
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typeof()返回'object'
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instanceof Object为false
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*/
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function wrap(value){
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if(value == null || value == undefined){
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return value;
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}
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if(!(typeof(value) == 'object' && value.getClass && util.isFunction(value.getClass))){
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return value;
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}
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var c = value.getClass();
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if(!(c.getName && util.isFunction(c.getName))){
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return value;
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}
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var name = c.getName();
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if(name == 'java.lang.Boolean'){
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return value == true;
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}
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//TODO: is is necessary?
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if(name == 'java.lang.Integer' || name == 'java.lang.Long' || name == 'java.lang.Double'
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|| name == 'java.lang.Float'){
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return Number(value);
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}
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return value;
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}
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bridges.toArray = function (iterable) {
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var iterator = iterable.iterator();
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var arr = [];
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while (iterator.hasNext()) {
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arr.push(iterator.next());
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}
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return arr;
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};
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bridges.asArray = function (list) {
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var arr = [];
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for (var i = 0; i < list.size(); i++) {
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arr.push(list.get(i));
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}
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for (var key in list) {
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if (typeof (key) == 'number')
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continue;
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var v = list[key];
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if (typeof (v) == 'function') {
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arr[key] = v.bind(list);
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} else {
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arr[key] = v;
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}
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}
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return arr;
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};
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bridges.toString = function (o) {
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return String(o);
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};
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module.exports = bridges;
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