com.fitbur.assertj.util.diff.InsertDelta Maven / Gradle / Ivy
/**
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*
* Copyright 2012-2016 the original author or authors.
*/
package com.fitbur.assertj.util.diff;
import java.util.List;
/**
* Initially copied from https://code.google.com/p/java-diff-utils/.
*
* Describes the add-delta between original and revised texts.
*
* @author Dmitry Naumenko
* @param
* The type of the compared elements in the 'lines'.
*/
public class InsertDelta extends Delta {
/**
* Creates an insert delta with the two given chunks.
*
* @param original
* The original chunk. Must not be {@code null}.
* @param revised
* The original chunk. Must not be {@code null}.
*/
public InsertDelta(Chunk original, Chunk revised) {
super(original, revised);
}
/**
* {@inheritDoc}
*
* @throws IllegalStateException
*/
@Override
public void applyTo(List target) throws IllegalStateException {
verify(target);
int position = this.getOriginal().getPosition();
List lines = this.getRevised().getLines();
for (int i = 0; i < lines.size(); i++) {
target.add(position + i, lines.get(i));
}
}
@Override
public void verify(List target) throws IllegalStateException {
if (getOriginal().getPosition() > target.size()) {
throw new IllegalStateException("Incorrect patch for delta: "
+ "delta original position > target size");
}
}
public TYPE getType() {
return Delta.TYPE.INSERT;
}
@Override
public String toString() {
return String.format("Extra content at line %s:%n %s%n", lineNumber(), formatLines(getRevised().getLines()));
}
}