com.khubla.jvmbasic.jvmbasicc.function.impl.token.LETTERSToken.java Source code

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Here is the source code for com.khubla.jvmbasic.jvmbasicc.function.impl.token.LETTERSToken.java

Source

package com.khubla.jvmbasic.jvmbasicc.function.impl.token;

/*
 * jvmBasic Copyright 2012, khubla.com
 *
 *   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 version 3 of the License, or
 *   (at your option) any later version.
 *
 *    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, see <http://www.gnu.org/licenses/>.
 */
import org.antlr.v4.runtime.Token;

import com.khubla.jvmbasic.jvmbasicc.compiler.GenerationContext;
import com.khubla.jvmbasic.jvmbasicc.compiler.RTLHelper;
import com.khubla.jvmbasic.jvmbasicc.function.BaseFunction;

/**
 * @author tome
 */
public class LETTERSToken extends BaseFunction {
    @Override
    public boolean execute(GenerationContext generationContext) throws Exception {
        try {
            /*
             * push the letter
             */
            final Token token = (Token) generationContext.getParseTree().getPayload();
            String letter = token.getText();
            /*
             * is there a suffix like "$" or "%" on this letters?
             */
            if (generationContext.getParseTree().getChildCount() == 1) {
                letter += generationContext.getChildValue(0);
            }
            /*
             * push onto value stack
             */
            RTLHelper.push(generationContext, letter);
            return true;
        } catch (final Exception e) {
            throw new Exception("Exception in execute", e);
        }
    }
}