Java Javascript Mozilla Library numberArg(Object[] args, int pos)

Description

Return the argument at "pos" as a Number, or throw an exception if the argument list is not long enough.

License

Open Source License

Declaration

public static Number numberArg(Object[] args, int pos) 

Method Source Code

//package com.java2s;
/**/*from   ww w  .j  av  a  2  s  . com*/
 * Copyright 2013 Apigee Corporation.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

import org.mozilla.javascript.Context;
import org.mozilla.javascript.EvaluatorException;

public class Main {
    /**
     * Return the argument at "pos" as a Number, or throw an exception if the argument list is not long enough.
     */
    public static Number numberArg(Object[] args, int pos) {
        ensureArg(args, pos);
        return Context.toNumber(args[pos]);
    }

    /**
     * Throw an execption if the argument list isn't long enough for argument "pos".
     */
    public static void ensureArg(Object[] args, int pos) {
        if (pos >= args.length) {
            throw new EvaluatorException("Not enough arguments.");
        }
    }
}

Related

1. listToNativeArray(List list)
2. mapJSToJava(final Object jsObject)
3. mapToNativeObject(Map map)
4. nativeArrayToString(Object scriptObject)
5. newObject()
6. objArg(Object[] args, int pos, Class type, boolean required)
7. objectToXMLString(Object xml)
8. omitLineBreak(AstNode node)
9. oneLineStringOf(AstNode node)