org.eclipse.lsp4j.util.Positions.java Source code

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/******************************************************************************
 * Copyright (c) 2018 TypeFox and others.
 * 
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0,
 * or the Eclipse Distribution License v. 1.0 which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 * 
 * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
 ******************************************************************************/
package org.eclipse.lsp4j.util;

import org.eclipse.lsp4j.Position;

import com.google.common.base.Preconditions;

/**
 * Utilities for the {@link Position}.
 */
public final class Positions {

    /**
     * {@code true} if {@code left} is strictly before than {@code right}. Otherwise,
     * {@code false}.
     * <p>
     * If you want to allow equality, use {@link Position#equals}.
     */
    public static boolean isBefore(Position left, Position right) {
        Preconditions.checkNotNull(left, "left");
        Preconditions.checkNotNull(right, "right");
        if (left.getLine() < right.getLine()) {
            return true;
        }
        if (left.getLine() > right.getLine()) {
            return false;
        }
        return left.getCharacter() < right.getCharacter();
    }

    private Positions() {

    }

}