67 lines
2.1 KiB
Java
67 lines
2.1 KiB
Java
/*
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* Copyright 2009-2017 java-diff-utils.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.github.difflib.patch;
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import java.util.List;
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/**
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* Describes the add-delta between original and revised texts.
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*
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* @author <a href="dm.naumenko@gmail.com">Dmitry Naumenko</a>
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* @param <T> The type of the compared elements in the 'lines'.
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*/
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public final class InsertDelta<T> extends AbstractDelta<T> {
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/**
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* Creates an insert delta with the two given chunks.
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*
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* @param original The original chunk. Must not be {@code null}.
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* @param revised The original chunk. Must not be {@code null}.
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*/
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public InsertDelta(Chunk<T> original, Chunk<T> revised) {
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super(DeltaType.INSERT, original, revised);
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}
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@Override
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protected void applyTo(List<T> target) throws PatchFailedException {
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int position = this.getSource().getPosition();
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List<T> lines = this.getTarget().getLines();
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for (int i = 0; i < lines.size(); i++) {
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target.add(position + i, lines.get(i));
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}
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}
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@Override
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protected void restore(List<T> target) {
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int position = getTarget().getPosition();
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int size = getTarget().size();
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for (int i = 0; i < size; i++) {
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target.remove(position);
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}
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}
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@Override
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public String toString() {
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return "[InsertDelta, position: " + getSource().getPosition()
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+ ", lines: " + getTarget().getLines() + "]";
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}
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@Override
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public AbstractDelta<T> withChunks(Chunk<T> original, Chunk<T> revised) {
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return new InsertDelta<T>(original, revised);
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}
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}
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