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/*
* SonarQube, open source software quality management tool.
* Copyright (C) 2008-2014 SonarSource
* mailto:contact AT sonarsource DOT com
*
* SonarQube 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.
*
* SonarQube 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.duplications.block;
import org.sonar.duplications.CodeFragment;
/**
* Represents part of source code between two lines.
* If two blocks have the same {@link #getBlockHash() hash}, then we assume that there is a duplication in a code, which they represent.
*/
public final class Block implements CodeFragment {
private final String resourceId;
private final ByteArray blockHash;
private final int indexInFile;
private final int startLine;
private final int endLine;
private int startUnit;
private int endUnit;
/**
* Cache for hash code.
*/
private int hash;
/**
* @since 2.14
*/
public static Builder builder() {
return new Builder();
}
/**
* <p>Instances can be reused - it is safe to call {@link #build}
* multiple times to build multiple blocks in series.</p>
*
* @since 2.14
*/
public static final class Builder {
private String resourceId;
private ByteArray blockHash;
private int indexInFile;
private int startLine;
private int endLine;
private int startUnit;
private int endUnit;
public Builder setResourceId(String resourceId) {
this.resourceId = resourceId;
return this;
}
public Builder setBlockHash(ByteArray blockHash) {
this.blockHash = blockHash;
return this;
}
public Builder setIndexInFile(int index) {
this.indexInFile = index;
return this;
}
public Builder setLines(int start, int end) {
this.startLine = start;
this.endLine = end;
return this;
}
public Builder setUnit(int start, int end) {
this.startUnit = start;
this.endUnit = end;
return this;
}
public Block build() {
return new Block(this);
}
}
private Block(Builder builder) {
this.resourceId = builder.resourceId;
this.blockHash = builder.blockHash;
this.indexInFile = builder.indexInFile;
this.startLine = builder.startLine;
this.endLine = builder.endLine;
this.startUnit = builder.startUnit;
this.endUnit = builder.endUnit;
}
public String getHashHex() {
return getBlockHash().toString();
}
public String getResourceId() {
return resourceId;
}
public ByteArray getBlockHash() {
return blockHash;
}
public int getIndexInFile() {
return indexInFile;
}
@Override
public int getStartLine() {
return startLine;
}
@Override
public int getEndLine() {
return endLine;
}
/**
* @since 2.14
*/
public int getStartUnit() {
return startUnit;
}
/**
* @since 2.14
*/
public int getEndUnit() {
return endUnit;
}
@Override
public boolean equals(Object obj) {
if (!(obj instanceof Block)) {
return false;
}
Block other = (Block) obj;
return resourceId.equals(other.resourceId)
&& blockHash.equals(other.blockHash)
&& indexInFile == other.indexInFile
&& startLine == other.startLine
&& endLine == other.endLine;
}
@Override
public int hashCode() {
int h = hash;
if (h == 0) {
h = resourceId.hashCode();
h = 31 * h + blockHash.hashCode();
h = 31 * h + indexInFile;
h = 31 * h + startLine;
h = 31 * h + endLine;
hash = h;
}
return h;
}
@Override
public String toString() {
return "'" + resourceId + "'[" + indexInFile + "|" + startLine + "-" + endLine + "]:" + blockHash;
}
}
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