Import Table

Author: Arian

README.md

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+/*
+---
+name: Table
+description: LUA-Style table implementation.
+...
+*/
+
+define(['Base/Host/Array'], function(Array){
+
+return function(){
+
+	this.length = 0;
+	var keys = [], values = [];
+
+	this.set = function(key, value){
+		var index = Array.indexOf(keys, key);
+		if (index == -1){
+			var length = keys.length;
+			keys[length] = key;
+			values[length] = value;
+			this.length++;
+		} else {
+			values[index] = value;
+		}
+		return this;
+	};
+
+	this.get = function(key){
+		var index = Array.indexOf(keys, key);
+		return (index == -1) ? null : values[index];
+	};
+
+	this.unset = function(key){
+		var index = Array.indexOf(keys, key);
+		if (index != -1){
+			this.length--;
+			keys.splice(index, 1);
+			return values.splice(index, 1)[0];
+		}
+		return null;
+	};
+
+	this.erase = function(value){
+		for (var i = 0, l = this.length; i < l; i++){
+			if (values[i] === value){
+				this.length--;
+				keys.splice(i, 1);
+				values.splice(i, 1);
+			}
+		}
+		return this;
+	};
+
+	this.forEach = function(fn, context){
+		for (var i = 0, l = this.length; i < l; i++) fn.call(context, values[i], keys[i], this);
+	};
+
+};
+
+});

Source/Table.js

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+
+define(['Table/Table'], function(Table){
+
+	describe('Table', function(){
+
+		var table = new Table();
+		var one = 1;
+		var obj = {};
+		var fn = function(){};
+
+		it('Adds a values to a Table instance', function(){
+			expect(table.length).toEqual(0);
+			table.set('foo', 'bar');
+			expect(table.length).toEqual(1);
+			table.set(one, 'one');
+			table.set(fn, 'function');
+			table.set(obj, 'an object');
+			expect(table.get('foo')).toEqual('bar');
+			expect(table.get(one)).toEqual('one');
+			expect(table.get(fn)).toEqual('function');
+			expect(table.get(obj)).toEqual('an object');
+			expect(table.length).toEqual(4);
+		});
+
+		it('Iterates over a Table instance', function(){
+			var keys = [];
+			var values = [];
+			table.each(function(key, val){
+				keys.push(key);
+				values.push(val);
+			});
+			expect(keys).toEqual(['foo', one, fn, obj]);
+			expect(values).toEqual(['bar', 'one', 'function', 'an object']);
+		});
+
+		it('Removes values from a Table instance', function(){
+			expect(table.length).toEqual(4);
+			table.erase('foo');
+			expect(table.length).toEqual(3);
+			table.erase(one);
+			table.erase(fn);
+			table.erase(obj);
+			expect(table.get('foo')).toEqual(null);
+			expect(table.get(one)).toEqual(null);
+			expect(table.get(fn)).toEqual(null);
+			expect(table.get(obj)).toEqual(null);
+			expect(table.length).toEqual(0);
+		});
+
+	});
+
+});