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/*
* Sonar, open source software quality management tool.
* Copyright (C) 2008-2012 SonarSource
* mailto:contact AT sonarsource DOT com
*
* Sonar 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.
*
* Sonar 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 Sonar; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02
*/
package org.sonar.duplications.statement;
import java.util.List;
import org.sonar.duplications.token.Token;
public class Statement {
private final int startLine;
private final int endLine;
private final String value;
/**
* Cache for hash code.
*/
private int hash;
public Statement(int startLine, int endLine, String value) {
this.startLine = startLine;
this.endLine = endLine;
this.value = value;
}
public Statement(List<Token> tokens) {
if (tokens == null || tokens.isEmpty()) {
throw new IllegalArgumentException("A statement can't be initialized with an empty list of tokens");
}
StringBuilder sb = new StringBuilder();
for (Token token : tokens) {
sb.append(token.getValue());
}
this.value = sb.toString();
this.startLine = tokens.get(0).getLine();
this.endLine = tokens.get(tokens.size() - 1).getLine();
}
public int getStartLine() {
return startLine;
}
public int getEndLine() {
return endLine;
}
public String getValue() {
return value;
}
@Override
public int hashCode() {
int h = hash;
if (h == 0) {
h = value.hashCode();
h = 31 * h + startLine;
h = 31 * h + endLine;
hash = h;
}
return h;
}
@Override
public boolean equals(Object obj) {
if (!(obj instanceof Statement)) {
return false;
}
Statement other = (Statement) obj;
return startLine == other.startLine
&& endLine == other.endLine
&& value.equals(other.value);
}
@Override
public String toString() {
return "[" + getStartLine() + "-" + getEndLine() + "] [" + getValue() + "]";
}
}
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