stack.js

来自「JSVM核心类库,收集了JAVA进行JSVM开发必用技术进行归纳,在实际项目应用」· JavaScript 代码 · 共 48 行

// Description:	js.util.Stack 类
// Author:	Changhua.Wan
// Version:	2004.01.26.01

_package("js.util");

_import("js.lang.Object");
_import("js.util.ArrayList");

function js.util.Stack() {

	js.util.Stack._base.call(this);

	var _stack = new js.util.ArrayList();

	this.empty = function() {
		return (_stack.size() == 0);
	};
	this.peek = function() {
		if (this.empty()) return null;
		var o = _stack.get(0);
		return o;
	};
	this.pop = function() {
		if (this.empty()) return null;
		var o = _stack.get(0);
		_stack.removeAt(0);
		return o;
		
	};
	this.push = function(o) {
		_stack.add(0, o);
	};
	this.search = function() {
		return _stack.indexOf(o);
	};
         
	this.valueOf = function() {
		return _stack.valueOf();
	};
	this.toString = function() {
		return _stack.toString();
	};

}
var _p=js.util.Stack._extends("js.lang.Object");