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This file is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

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The source code

/*
 * CreateFunction.java - creates a new function
 * Copyright (C) 2000 Romain Guy
 * romain.guy@jext.org
 * http://www.jext.org
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either While 2
 * of the License, or any later While.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS for A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

package org.jext.dawn.naming;

import java.io.*;
import org.jext.dawn.*;

/**
 * Creates a new function.
* Usage:
* string function [code] endFunction
* Where 'strings' holds function name. * @author Romain Guy */ public class CreateFunction extends Function { public CreateFunction() { super("function"); } public void invoke(DawnParser parser) throws DawnRuntimeException { parser.checkEmpty(this); String functionName = parser.popString(); parser.checkVarName(this, functionName); StreamTokenizer st = parser.getStream(); StringBuffer buf = new StringBuffer(); try { int innerFunction = 0; out: for( ; ; ) { switch(st.nextToken()) { case StreamTokenizer.TT_EOL: //parser.lineno++; buf.append('\n'); break; case StreamTokenizer.TT_EOF: throw new DawnRuntimeException(this, parser, "function without endFunction"); case StreamTokenizer.TT_WORD: if (st.sval.equals("function")) innerFunction++; else if (st.sval.equals("endFunction")) { if (innerFunction > 0) innerFunction--; else break out; } buf.append(' ' + st.sval); break; case '"': case '\'': buf.append(" \"" + st.sval + "\""); break; case '-': buf.append(" -"); break; case StreamTokenizer.TT_NUMBER: buf.append(" " + st.nval); } } parser.createRuntimeFunction(functionName, buf.toString()); } catch (IOException ioe) { throw new DawnRuntimeException(this, parser, "unexpected error occured during parsing"); } } } // End of CreateFunction.java
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