/*
?*?Copyright?2002-2007?Robert?Breidecker.
?*?
?*?Licensed?under?the?Apache?License?Version?2.0?（the?“License“）;
?*?you?may?not?use?this?file?except?in?compliance?with?the?License.
?*?You?may?obtain?a?copy?of?the?License?at
?*?
?*??????http://www.apache.org/licenses/LICENSE-2.0
?*?
?*?Unless?required?by?applicable?law?or?agreed?to?in?writing?software
?*?distributed?under?the?License?is?distributed?on?an?“AS?IS“?BASIS
?*?WITHOUT?WARRANTIES?OR?CONDITIONS?OF?ANY?KIND?either?express?or?implied.
?*?See?the?License?for?the?specific?language?governing?permissions?and
?*?limitations?under?the?License.
?*/

package?net.sourceforge.jeval;

import?java.util.Enumeration;

/**
?*?This?class?allow?for?tokenizer?methods?to?be?called?on?a?String?of?arguments.
?*/
public?class?ArgumentTokenizer?implements?Enumeration?{

	/**
	?*?The?default?delimitor.
	?*/
	public?final?char?defaultDelimiter?=?
		EvaluationConstants.FUNCTION_ARGUMENT_SEPARATOR;

	//?The?arguments?to?be?tokenized.?This?is?updated?every?time?the?nextToken
	//?method?is?called.
	private?String?arguments?=?null;

	//?The?separator?between?the?arguments.
	private?char?delimiter?=?defaultDelimiter;

	/**
	?*?Constructor?that?takes?a?String?of?arguments?and?a?delimitoer.
	?*?
	?*?@param?arguments
	?*????????????The?String?of?srguments?to?be?tokenized.
	?*?@param?delimiter
	?*????????????The?argument?tokenizer.
	?*/
	public?ArgumentTokenizer（final?String?arguments?final?char?delimiter）?{
		this.arguments?=?arguments;
		this.delimiter?=?delimiter;
	}

	/**
	?*?Indicates?if?there?are?more?elements.
	?*?
	?*?@return?True?if?there?are?more?elements?and?false?if?not.
	?*/
	public?boolean?hasMoreElements（）?{
		return?hasMoreTokens（）;
	}

	/**
	?*?Indicates?if?there?are?more?tokens.
	?*?
	?*?@return?True?if?there?are?more?tokens?and?false?if?not.
	?*/
	public?boolean?hasMoreTokens（）?{

		if?（arguments.length（）?>?0）?{
			return?true;
		}

		return?false;
	}

	/**
	?*?Returns?the?next?element.
	?*?
	?*?@return?The?next?element.
	?*/
	public?object?nextElement（）?{
		return?nextToken（）;
	}

	/**
	?*?Returns?the?next?token.
	?*?
	?*?@return?The?next?element.
	?*/
	public?String?nextToken（）?{
		int?charCtr?=?0;
		int?size?=?arguments.length（）;
		int?parenthesesCtr?=?0;
		String?returnArgument?=?null;

		//?Loop?until?we?hit?the?end?of?the?arguments?String.
		while?（charCtr?			if?（arguments.charAt（charCtr）?==?‘（‘）?{
				parenthesesCtr++;
			}?else?if?（arguments.charAt（charCtr）?==?‘）‘）?{
				parenthesesCtr--;
			}?else?if?（arguments.charAt（charCtr）?==?delimiter
					&&?parenthesesCtr?==?0）?{

				returnArgument?=?arguments.substring（0?charCtr）;
				arguments?=?arguments.substring（charCtr?+?1）;
				break;
			}

			charCtr++;
		}

		if?（returnArgument?==?null）?{
			returnArgument?=?arguments;
			arguments?=?““;
		}

		return?returnArgument;
	}
}

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件????????400??2011-11-10?22:01??loiyCalculator\.classpath

?????文件????????341??2010-12-02?22:17??loiyCalculator\.fatjar

?????文件????????390??2010-11-29?23:38??loiyCalculator\.project

?????文件?????????88??2010-12-23?21:16??loiyCalculator\.settings\org.eclipse.core.resources.prefs

?????文件???????1090??2010-11-29?23:40??loiyCalculator\bin\images\10_1.png

?????文件???????1082??2010-12-01?20:04??loiyCalculator\bin\images\10_2.png

?????文件????????905??2010-11-29?23:40??loiyCalculator\bin\images\11_1.png

?????文件????????888??2010-12-01?20:04??loiyCalculator\bin\images\11_2.png

?????文件????????947??2010-11-29?23:40??loiyCalculator\bin\images\12_1.png

?????文件????????907??2010-12-01?20:10??loiyCalculator\bin\images\12_2.png

?????文件????????922??2010-11-29?23:40??loiyCalculator\bin\images\13_1.png

?????文件????????907??2010-12-01?20:10??loiyCalculator\bin\images\13_2.png

?????文件????????947??2010-11-29?23:40??loiyCalculator\bin\images\14_1.png

?????文件????????926??2010-12-01?20:10??loiyCalculator\bin\images\14_2.png

?????文件????????936??2010-11-29?23:40??loiyCalculator\bin\images\15_1.png

?????文件????????923??2010-12-01?20:10??loiyCalculator\bin\images\15_2.png

?????文件???????1067??2010-11-29?23:40??loiyCalculator\bin\images\16_1.png

?????文件???????1052??2010-12-01?20:10??loiyCalculator\bin\images\16_2.png

?????文件????????938??2010-11-29?23:40??loiyCalculator\bin\images\17_1.png

?????文件????????924??2010-12-01?20:09??loiyCalculator\bin\images\17_2.png

?????文件????????935??2010-11-29?23:40??loiyCalculator\bin\images\18_1.png

?????文件????????937??2010-12-01?20:09??loiyCalculator\bin\images\18_2.png

?????文件???????1072??2010-11-29?23:40??loiyCalculator\bin\images\19_1.png

?????文件???????1062??2010-12-01?20:09??loiyCalculator\bin\images\19_2.png

?????文件????????941??2010-11-29?23:40??loiyCalculator\bin\images\1_1.png

?????文件????????937??2010-12-01?20:01??loiyCalculator\bin\images\1_2.png

?????文件????????910??2010-11-29?23:40??loiyCalculator\bin\images\20_1.png

?????文件????????896??2010-12-01?20:09??loiyCalculator\bin\images\20_2.png

?????文件????????908??2010-11-29?23:40??loiyCalculator\bin\images\21_1.png

?????文件????????895??2010-12-01?20:21??loiyCalculator\bin\images\21_2.png

............此處省略548個(gè)文件信息