org.btrplace.btrpsl.tree.NumberTree Maven / Gradle / Ivy

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/*
 * Copyright (c) 2014 University Nice Sophia Antipolis
 *
 * This file is part of btrplace.
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see .
 */

package org.btrplace.btrpsl.tree;

import org.antlr.runtime.Token;
import org.btrplace.btrpsl.ErrorReporter;
import org.btrplace.btrpsl.antlr.ANTLRBtrplaceSL2Lexer;
import org.btrplace.btrpsl.element.BtrpNumber;
import org.btrplace.btrpsl.element.BtrpOperand;

/**
 * A parser to make integer.
 *
 * @author Fabien Hermenier
 */
public class NumberTree extends BtrPlaceTree {

    /**
     * Make a new parser.
     *
     * @param t    the root token
     * @param errs the errors to report
     */
    public NumberTree(Token t, ErrorReporter errs) {
        super(t, errs);
    }

    @Override
    public BtrpOperand go(BtrPlaceTree parent) {

        try {
            switch (token.getType()) {
                case ANTLRBtrplaceSL2Lexer.OCTAL:
                    return new BtrpNumber(Integer.parseInt(getText().substring(1), 8), BtrpNumber.Base.base8);
                case ANTLRBtrplaceSL2Lexer.HEXA:
                    return new BtrpNumber(Integer.parseInt(getText().substring(2), 16), BtrpNumber.Base.base16);
                case ANTLRBtrplaceSL2Lexer.DECIMAL:
                    return new BtrpNumber(Integer.parseInt(getText()), BtrpNumber.Base.base10);
                case ANTLRBtrplaceSL2Lexer.FLOAT:
                    return new BtrpNumber(Double.parseDouble(getText()));
            }
        } catch (NumberFormatException e) {
        }
        return ignoreError("Malformed integer: " + getText());
    }
}