org.sonar.batch.issue.ignore.pattern.LineRange.java Source code

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Here is the source code for org.sonar.batch.issue.ignore.pattern.LineRange.java

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/*
 * SonarQube
 * Copyright (C) 2009-2016 SonarSource SA
 * mailto:contact AT sonarsource DOT com
 *
 * 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, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.sonar.batch.issue.ignore.pattern;

import com.google.common.base.Preconditions;
import com.google.common.collect.Sets;

import java.util.Set;

public class LineRange {
    private int from;
    private int to;

    public LineRange(int from, int to) {
        Preconditions.checkArgument(from <= to, "Line range is not valid: %s must be greater than %s", from, to);

        this.from = from;
        this.to = to;
    }

    public boolean in(int lineId) {
        return from <= lineId && lineId <= to;
    }

    public Set<Integer> toLines() {
        Set<Integer> lines = Sets.newLinkedHashSet();
        for (int index = from; index <= to; index++) {
            lines.add(index);
        }
        return lines;
    }

    @Override
    public String toString() {
        return "[" + from + "-" + to + "]";
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + from;
        result = prime * result + to;
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        if (fieldsDiffer((LineRange) obj)) {
            return false;
        }
        return true;
    }

    private boolean fieldsDiffer(LineRange other) {
        if (from != other.from) {
            return true;
        }
        if (to != other.to) {
            return true;
        }
        return false;
    }
}