com.jeroensteenbeeke.andalite.core.Location.java Source code

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Here is the source code for com.jeroensteenbeeke.andalite.core.Location.java

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/**
 * This program 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 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 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 <http://www.gnu.org/licenses/>.
 */

package com.jeroensteenbeeke.andalite.core;

import javax.annotation.Nonnull;

import org.antlr.v4.runtime.Token;
import org.antlr.v4.runtime.tree.TerminalNode;

import com.github.antlrjavaparser.api.Node;

public final class Location {
    private final int start;

    private final int end;

    public Location(@Nonnull int start, @Nonnull int end) {
        if (end < start) {
            throw new IllegalArgumentException("End before start");
        }
        this.start = start;
        this.end = end;
    }

    @Nonnull
    public int getLength() {
        return end - start;
    }

    @Nonnull
    public int getStart() {
        return start;
    }

    @Nonnull
    public int getEnd() {
        return end;
    }

    @Nonnull
    public static Location from(@Nonnull Node node) {
        return new Location(node.getBeginIndex(), node.getEndIndex() + 1);
    }

    @Nonnull
    public static Location from(@Nonnull TerminalNode node) {
        Token symbol = node.getSymbol();

        return new Location(symbol.getStartIndex(), symbol.getStopIndex() + 1);
    }

    @Override
    public String toString() {
        return String.format("[%d,%d]", start, end);
    }
}