++

сравнение

src/com/github/difflib/patch/EqualDelta.java

@@ -0,0 +1,56 @@
+/*
+ * Copyright 2020 java-diff-utils.
+ *
+ * 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.
+ */
+package com.github.difflib.patch;
+
+import java.util.List;
+
+/**
+ * This delta contains equal lines of data. Therefore nothing is to do in applyTo and restore.
+ * @author tobens
+ */
+public class EqualDelta<T> extends AbstractDelta<T> {
+
+    public EqualDelta(Chunk<T> source, Chunk<T> target) {
+        super(DeltaType.EQUAL, source, target);
+    }
+
+    @Override
+    protected void applyTo(List<T> target) throws PatchFailedException {
+    }
+
+    @Override
+    protected void restore(List<T> target) {
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    protected void applyFuzzyToAt(List<T> target, int fuzz, int delta) {
+        // equals so no operations
+    }
+
+    @Override
+    public String toString() {
+        return "[EqualDelta, position: " + getSource().getPosition() + ", lines: "
+                + getSource().getLines() + "]";
+    }
+    
+    @Override
+    public AbstractDelta<T> withChunks(Chunk<T> original, Chunk<T> revised) {
+        return new EqualDelta<T>(original, revised);
+    }
+}