92 lines
1.3 KiB
JavaScript
92 lines
1.3 KiB
JavaScript
var cloneObj = function( o )
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{
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if ( o == null || typeof o != "object" ) return o;
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var clone = {};
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if ( o instanceof Date )
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{
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clone = new Date();
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clone.setTime( o.getTime() );
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return clone;
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}
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else if ( o instanceof Array )
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{
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clone = [];
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for ( var i = 0, l = o.length; i < l; i ++ )
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{
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clone[i] = cloneObj( o[i] );
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}
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return clone;
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}
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else if ( o instanceof RegExp )
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{
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clone = new RegExp( o );
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return clone;
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}
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else if ( o instanceof Object )
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{
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for ( var p in o )
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{
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o.hasOwnProperty( p )
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&& ( clone[ p ] = cloneObj( o[ p ] ) );
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}
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return clone;
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}
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throw new Error( "Can't clone object: " + o );
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};
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var referenceObj = function()
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{
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var l = arguments.length;
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if( l == 0 ) return null;
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var ref = arguments[0];
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if( l == 1 ) return ref;
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var refd = {};
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for( var i = 1; i < l; i ++ )
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{
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var prop = arguments[i];
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refd[ prop ] = ref[ prop ];
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}
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return refd;
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};
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var LStack = function() {
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this._first = null;
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};
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LStack.prototype.add = function( obj )
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{
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var p = this._first;
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this._first = { "o": obj, "n": p };
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};
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LStack.prototype.pop = function()
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{
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var g = this._first;
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this._first = g.n;
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return g.o;
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};
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LStack.prototype.curr = function() {
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return this._first.o;
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};
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LStack.prototype.empty = function() { return !this._first; }
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module.exports = {
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clone: cloneObj
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, refObj: referenceObj
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, LStack: LStack
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};
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