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/*
* Copyright 2000-2009 JetBrains s.r.o.
*
* 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.intellij.openapi.vcs.ex;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.editor.markup.RangeHighlighter;
import com.intellij.util.diff.Diff;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
/**
* author: lesya
*/
public class Range {
private static final Logger LOG = Logger.getInstance(Range.class);
public static final byte MODIFIED = 1;
public static final byte INSERTED = 2;
public static final byte DELETED = 3;
// offset1/offset2 - line numbers
// (2,3) - modified 2nd line
// (2,2) - empty range between 1 and 2 lines
// index of first line is 0
private int myOffset1;
private int myOffset2;
private final int myUpToDateOffset1;
private final int myUpToDateOffset2;
private final byte myType;
@Nullable private RangeHighlighter myRangeHighlighter;
public static Range createOn(@NotNull Diff.Change change, int shift, int upToDateShift) {
byte type = getChangeTypeFrom(change);
int offset1 = shift + change.line1;
int offset2 = offset1 + change.inserted;
int uOffset1 = upToDateShift + change.line0;
int uOffset2 = uOffset1 + change.deleted;
return new Range(offset1, offset2, uOffset1, uOffset2, type);
}
private static byte getChangeTypeFrom(@NotNull Diff.Change change) {
if ((change.deleted > 0) && (change.inserted > 0)) return MODIFIED;
if ((change.deleted > 0)) return DELETED;
if ((change.inserted > 0)) return INSERTED;
LOG.error("Unknown change type");
return 0;
}
public Range(int offset1, int offset2, int uOffset1, int uOffset2, byte type) {
myOffset1 = offset1;
myOffset2 = offset2;
myUpToDateOffset1 = uOffset1;
myUpToDateOffset2 = uOffset2;
myType = type;
}
public int hashCode() {
return myUpToDateOffset1 ^ myUpToDateOffset2 ^ myType ^ myOffset1 ^ myOffset2;
}
public boolean equals(Object object) {
if (!(object instanceof Range)) return false;
Range other = (Range)object;
return
(myUpToDateOffset1 == other.myUpToDateOffset1)
&& (myUpToDateOffset2 == other.myUpToDateOffset2)
&& (myOffset1 == other.myOffset1)
&& (myOffset2 == other.myOffset2)
&& (myType == other.myType);
}
public String toString() {
return String.format("%s, %s, %s, %s, %s", myOffset1, myOffset2, myUpToDateOffset1, myUpToDateOffset2, getTypeName());
}
@NonNls
private String getTypeName() {
switch (myType) {
case MODIFIED:
return "MODIFIED";
case INSERTED:
return "INSERTED";
case DELETED:
return "DELETED";
}
return "UNKNOWN";
}
public byte getType() {
return myType;
}
public int getUpToDateRangeLength() {
return myUpToDateOffset2 - myUpToDateOffset1;
}
public void shift(int shift) {
myOffset1 += shift;
myOffset2 += shift;
}
public int getOffset1() {
return myOffset1;
}
public int getOffset2() {
return myOffset2;
}
public int getUOffset1() {
return myUpToDateOffset1;
}
public int getUOffset2() {
return myUpToDateOffset2;
}
public boolean canBeMergedWith(@NotNull Range range) {
return myOffset2 == range.myOffset1;
}
@NotNull
public Range mergeWith(@NotNull Range range) {
return new Range(myOffset1, range.myOffset2, myUpToDateOffset1, range.myUpToDateOffset2, mergedStatusWith(range));
}
private byte mergedStatusWith(@NotNull Range range) {
byte type = myType;
if (myType != range.myType) type = MODIFIED;
return type;
}
public boolean hasHighlighter() {
return myRangeHighlighter != null;
}
public void setHighlighter(RangeHighlighter highlighter) {
myRangeHighlighter = highlighter;
}
@Nullable
public RangeHighlighter getHighlighter() {
return myRangeHighlighter;
}
}
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