92 lines
2.6 KiB
JavaScript
92 lines
2.6 KiB
JavaScript
/*
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Copyright (C) 2008 Alina Friedrichsen <x-alina@gmx.net>
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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SUCH DAMAGE.
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*/
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function VarType() {
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}
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VarType.isNull = function(obj) {
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if(typeof obj == "undefined") return true;
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if(typeof obj == "object" && (!obj)) return true;
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return false;
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};
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VarType.toFloat = function(value) {
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value = Number(value);
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return value;
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};
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VarType.toDecimal = function(value) {
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value = Number(value);
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if(!isFinite(value)) value = 0.0;
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return value;
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};
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VarType.toInt = function(value) {
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value = Number(value);
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if(!isFinite(value)) value = 0.0;
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value = Math.floor(value);
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return value;
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};
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VarType.toUInt = function(value) {
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value = Number(value);
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if(!isFinite(value)) value = 0.0;
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else if(value < 0.0) value = 0.0;
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value = Math.floor(value);
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return value;
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};
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VarType.toStr = function(value) {
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if(VarType.isNull(value)) value = "";
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value = String(value);
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return value;
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};
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VarType.toBool = function(value) {
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value = Boolean(value);
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return value;
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};
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VarType.needObject = function(obj) {
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if(typeof obj != "object" || (!obj)) throw new TypeError();
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};
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VarType.needInstanceOf = function(obj, type) {
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if(!(obj instanceof type)) throw new TypeError();
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};
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VarType.needFunction = function(obj) {
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if(typeof obj != "function") throw new TypeError();
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};
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VarType.needNode = function(obj, type) {
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VarType.needObject(obj);
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if(VarType.isNull(obj.nodeType)) throw new TypeError();
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if(!VarType.isNull(type)) {
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type = VarType.toInt(type);
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if(obj.nodeType != type) throw new TypeError();
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}
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};
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