public virtual void TestComparatorReduceCommonStartEnd()
{
RawTextComparator c = RawTextComparator.DEFAULT;
Edit e;
e = c.ReduceCommonStartEnd(T(string.Empty), T(string.Empty), new Edit(0, 0, 0, 0)
);
NUnit.Framework.Assert.AreEqual(new Edit(0, 0, 0, 0), e);
e = c.ReduceCommonStartEnd(T("a"), T("b"), new Edit(0, 1, 0, 1));
NUnit.Framework.Assert.AreEqual(new Edit(0, 1, 0, 1), e);
e = c.ReduceCommonStartEnd(T("a"), T("a"), new Edit(0, 1, 0, 1));
NUnit.Framework.Assert.AreEqual(new Edit(1, 1, 1, 1), e);
e = c.ReduceCommonStartEnd(T("axB"), T("axC"), new Edit(0, 3, 0, 3));
NUnit.Framework.Assert.AreEqual(new Edit(2, 3, 2, 3), e);
e = c.ReduceCommonStartEnd(T("Bxy"), T("Cxy"), new Edit(0, 3, 0, 3));
NUnit.Framework.Assert.AreEqual(new Edit(0, 1, 0, 1), e);
e = c.ReduceCommonStartEnd(T("bc"), T("Abc"), new Edit(0, 2, 0, 3));
NUnit.Framework.Assert.AreEqual(new Edit(0, 0, 0, 1), e);
e = new Edit(0, 5, 0, 5);
e = c.ReduceCommonStartEnd(T("abQxy"), T("abRxy"), e);
NUnit.Framework.Assert.AreEqual(new Edit(2, 3, 2, 3), e);
RawText a = new RawText(Sharpen.Runtime.GetBytesForString("p\na b\nQ\nc d\n", "UTF-8"
));
RawText b = new RawText(Sharpen.Runtime.GetBytesForString("p\na b \nR\n c d \n"
, "UTF-8"));
e = new Edit(0, 4, 0, 4);
e = RawTextComparator.WS_IGNORE_ALL.ReduceCommonStartEnd(a, b, e);
NUnit.Framework.Assert.AreEqual(new Edit(2, 3, 2, 3), e);
}
private HunkRangeInfo(ITextSnapshot snapshot, Edit edit, List<string> originalText)
{
_snapshot = snapshot;
_edit = edit;
_originalText = originalText;
_canRollback = false;
}
public virtual void TestCreate()
{
Edit e = new Edit(1, 2, 3, 4);
NUnit.Framework.Assert.AreEqual(1, e.GetBeginA());
NUnit.Framework.Assert.AreEqual(2, e.GetEndA());
NUnit.Framework.Assert.AreEqual(3, e.GetBeginB());
NUnit.Framework.Assert.AreEqual(4, e.GetEndB());
}
public override bool Equals(object o)
{
if (o is NGit.Diff.Edit)
{
NGit.Diff.Edit e = (NGit.Diff.Edit)o;
return(this.beginA == e.beginA && this.endA == e.endA && this.beginB == e.beginB &&
this.endB == e.endB);
}
return(false);
}
public virtual void TestCreateEmpty()
{
Edit e = new Edit(1, 3);
NUnit.Framework.Assert.AreEqual(1, e.GetBeginA());
NUnit.Framework.Assert.AreEqual(1, e.GetEndA());
NUnit.Framework.Assert.AreEqual(3, e.GetBeginB());
NUnit.Framework.Assert.AreEqual(3, e.GetEndB());
NUnit.Framework.Assert.IsTrue(e.IsEmpty(), "is empty");
NUnit.Framework.Assert.AreEqual(Edit.Type.EMPTY, e.GetType());
}
public virtual void TestComparatorReduceCommonStartButLastLineNoEol()
{
RawText a;
RawText b;
Edit e;
a = new RawText(Sharpen.Runtime.GetBytesForString("start", "UTF-8"));
b = new RawText(Sharpen.Runtime.GetBytesForString("start of line", "UTF-8"));
e = new Edit(0, 1, 0, 1);
e = RawTextComparator.DEFAULT.ReduceCommonStartEnd(a, b, e);
NUnit.Framework.Assert.AreEqual(new Edit(0, 1, 0, 1), e);
}
public HunkRangeInfo(ITextSnapshot snapshot, Edit edit, RawText originalText, RawText workingText)
{
if (snapshot == null)
throw new ArgumentNullException("snapshot");
if (edit == null)
throw new ArgumentNullException("edit");
if (originalText == null)
throw new ArgumentNullException("originalText");
if (workingText == null)
throw new ArgumentNullException("workingText");
_snapshot = snapshot;
_edit = edit;
_originalText = originalText.GetString(edit.GetBeginA(), edit.GetEndA(), true).Split('\n').Select(i => i.TrimEnd('\r')).ToList();
_canRollback = true;
}
public virtual void TestAddOne()
{
Edit e = new Edit(1, 2, 1, 1);
EditList l = new EditList();
Extensions.AddItem(l, e);
NUnit.Framework.Assert.AreEqual(1, l.Count);
NUnit.Framework.Assert.IsFalse(Extensions.IsEmpty(l));
NUnit.Framework.Assert.AreSame(e, l[0]);
NUnit.Framework.Assert.AreSame(e, Extensions.Iterator(l).Next());
NUnit.Framework.Assert.AreEqual(l, l);
NUnit.Framework.Assert.IsFalse(l.Equals(new EditList()));
EditList l2 = new EditList();
Extensions.AddItem(l2, e);
NUnit.Framework.Assert.AreEqual(l2, l);
NUnit.Framework.Assert.AreEqual(l, l2);
NUnit.Framework.Assert.AreEqual(AList<Edit>.GetHashCode(l), AList<Edit>.GetHashCode(l2));
}
public virtual void TestAddOne()
{
Edit e = new Edit(1, 2, 1, 1);
EditList l = new EditList();
l.AddItem(e);
NUnit.Framework.Assert.AreEqual(1, l.Count);
NUnit.Framework.Assert.IsFalse(l.IsEmpty());
NUnit.Framework.Assert.AreSame(e, l[0]);
NUnit.Framework.Assert.AreSame(e, l.Iterator().Next());
NUnit.Framework.Assert.AreEqual(l, l);
NUnit.Framework.Assert.IsFalse(l.Equals(new EditList()));
EditList l2 = new EditList();
l2.AddItem(e);
NUnit.Framework.Assert.AreEqual(l2, l);
NUnit.Framework.Assert.AreEqual(l, l2);
NUnit.Framework.Assert.AreEqual(l.GetHashCode(), l2.GetHashCode());
}
public virtual void TestAddTwo()
{
Edit e1 = new Edit(1, 2, 1, 1);
Edit e2 = new Edit(8, 8, 8, 12);
EditList l = new EditList();
Extensions.AddItem(l, e1);
Extensions.AddItem(l, e2);
NUnit.Framework.Assert.AreEqual(2, l.Count);
NUnit.Framework.Assert.AreSame(e1, l[0]);
NUnit.Framework.Assert.AreSame(e2, l[1]);
Iterator<Edit> i = Extensions.Iterator(l);
NUnit.Framework.Assert.AreSame(e1, i.Next());
NUnit.Framework.Assert.AreSame(e2, i.Next());
NUnit.Framework.Assert.AreEqual(l, l);
NUnit.Framework.Assert.IsFalse(l.Equals(new EditList()));
EditList l2 = new EditList();
Extensions.AddItem(l2, e1);
Extensions.AddItem(l2, e2);
NUnit.Framework.Assert.AreEqual(l2, l);
NUnit.Framework.Assert.AreEqual(l, l2);
NUnit.Framework.Assert.AreEqual(AList<Edit>.GetHashCode(l), AList<Edit>.GetHashCode(l2));
}
private void Diff(Edit r)
{
switch (r.GetType())
{
case Edit.Type.INSERT:
case Edit.Type.DELETE:
{
this.edits.AddItem(r);
break;
}
case Edit.Type.REPLACE:
{
this.DiffReplace(r);
break;
}
case Edit.Type.EMPTY:
default:
{
throw new InvalidOperationException();
}
}
}
public virtual void TestAddTwo()
{
Edit e1 = new Edit(1, 2, 1, 1);
Edit e2 = new Edit(8, 8, 8, 12);
EditList l = new EditList();
l.AddItem(e1);
l.AddItem(e2);
NUnit.Framework.Assert.AreEqual(2, l.Count);
NUnit.Framework.Assert.AreSame(e1, l[0]);
NUnit.Framework.Assert.AreSame(e2, l[1]);
Iterator<Edit> i = l.Iterator();
NUnit.Framework.Assert.AreSame(e1, i.Next());
NUnit.Framework.Assert.AreSame(e2, i.Next());
NUnit.Framework.Assert.IsTrue(l.Equals(l));
NUnit.Framework.Assert.IsFalse(l.Equals(new EditList()));
EditList l2 = new EditList();
l2.AddItem(e1);
l2.AddItem(e2);
NUnit.Framework.Assert.IsTrue(l.Equals(l2));
NUnit.Framework.Assert.IsTrue(l2.Equals(l));
NUnit.Framework.Assert.AreEqual(l.GetHashCode(), l2.GetHashCode());
}
public virtual void TestType_Delete()
{
Edit e = new Edit(1, 2, 1, 1);
NUnit.Framework.Assert.AreEqual(Edit.Type.DELETE, e.GetType());
NUnit.Framework.Assert.IsFalse(e.IsEmpty(), "not empty");
NUnit.Framework.Assert.AreEqual(1, e.GetLengthA());
NUnit.Framework.Assert.AreEqual(0, e.GetLengthB());
}
public virtual void TestComparatorReduceCommonStartEnd_EmptyLine()
{
RawText a;
RawText b;
Edit e;
a = new RawText(Sharpen.Runtime.GetBytesForString("R\n y\n", "UTF-8"));
b = new RawText(Sharpen.Runtime.GetBytesForString("S\n\n y\n", "UTF-8"));
e = new Edit(0, 2, 0, 3);
e = RawTextComparator.DEFAULT.ReduceCommonStartEnd(a, b, e);
NUnit.Framework.Assert.AreEqual(new Edit(0, 1, 0, 2), e);
a = new RawText(Sharpen.Runtime.GetBytesForString("S\n\n y\n", "UTF-8"));
b = new RawText(Sharpen.Runtime.GetBytesForString("R\n y\n", "UTF-8"));
e = new Edit(0, 3, 0, 2);
e = RawTextComparator.DEFAULT.ReduceCommonStartEnd(a, b, e);
NUnit.Framework.Assert.AreEqual(new Edit(0, 2, 0, 1), e);
}
private static bool End(Edit edit, int a, int b)
{
return edit.GetEndA() <= a && edit.GetEndB() <= b;
}
public virtual void TestType_Insert()
{
Edit e = new Edit(1, 1, 1, 2);
NUnit.Framework.Assert.AreEqual(Edit.Type.INSERT, e.GetType());
NUnit.Framework.Assert.IsFalse(e.IsEmpty(), "not empty");
NUnit.Framework.Assert.AreEqual(0, e.GetLengthA());
NUnit.Framework.Assert.AreEqual(1, e.GetLengthB());
}
public virtual void TestSet()
{
Edit e1 = new Edit(1, 2, 1, 1);
Edit e2 = new Edit(3, 4, 3, 3);
EditList l = new EditList();
l.AddItem(e1);
NUnit.Framework.Assert.AreSame(e1, l[0]);
NUnit.Framework.Assert.AreSame(e1, l.Set(0, e2));
NUnit.Framework.Assert.AreSame(e2, l[0]);
}
public override void DiffNonCommon <S>(EditList edits, HashedSequenceComparator <S>
cmp, HashedSequence <S> a, HashedSequence <S> b, Edit region)
{
new NGit.Diff.MyersDiff <S>(edits, cmp, a, b, region);
}
public HunkRangeInfo TranslateTo(ITextSnapshot snapshot)
{
if (snapshot == null)
throw new ArgumentNullException("snapshot");
if (snapshot == _snapshot)
return this;
if (IsDeletion)
{
// track a point
ITextSnapshotLine line = _snapshot.GetLineFromLineNumber(_edit.GetBeginB());
ITrackingPoint trackingPoint = _snapshot.CreateTrackingPoint(line.Start, PointTrackingMode.Negative);
SnapshotPoint updated = trackingPoint.GetPoint(snapshot);
int updatedLineNumber = updated.GetContainingLine().LineNumber;
Edit updatedEdit = new Edit(_edit.GetBeginA(), _edit.GetEndA(), updatedLineNumber, updatedLineNumber);
return new HunkRangeInfo(snapshot, updatedEdit, _originalText);
}
else
{
// track a span
ITextSnapshotLine startLine = _snapshot.GetLineFromLineNumber(_edit.GetBeginB());
ITextSnapshotLine endLine = _snapshot.GetLineFromLineNumber(_edit.GetEndB() - 1);
ITrackingSpan trackingSpan = _snapshot.CreateTrackingSpan(new SnapshotSpan(startLine.Start, endLine.EndIncludingLineBreak), SpanTrackingMode.EdgeInclusive);
SnapshotSpan updated = trackingSpan.GetSpan(snapshot);
int updatedStartLineNumber = updated.Start.GetContainingLine().LineNumber;
int updatedEndLineNumber = updated.End.GetContainingLine().LineNumber;
Edit updatedEdit = new Edit(_edit.GetBeginA(), _edit.GetEndA(), updatedStartLineNumber, updatedEndLineNumber);
return new HunkRangeInfo(snapshot, updatedEdit, _originalText);
}
}
public virtual void TestExtendB()
{
Edit e = new Edit(1, 2, 1, 1);
e.ExtendB();
NUnit.Framework.Assert.AreEqual(new Edit(1, 2, 1, 2), e);
e.ExtendB();
NUnit.Framework.Assert.AreEqual(new Edit(1, 2, 1, 3), e);
}
/// <returns>a list describing the content edits performed within the hunk.</returns>
public virtual EditList ToEditList()
{
if (editList == null)
{
editList = new EditList();
byte[] buf = file.buf;
int c = RawParseUtils.NextLF(buf, startOffset);
int oLine = old.startLine;
int nLine = newStartLine;
Edit @in = null;
for (; c < endOffset; c = RawParseUtils.NextLF(buf, c))
{
switch (buf[c])
{
case (byte)(' '):
case (byte)('\n'):
{
@in = null;
oLine++;
nLine++;
continue;
goto case (byte)('-');
}
case (byte)('-'):
{
if (@in == null)
{
@in = new Edit(oLine - 1, nLine - 1);
editList.AddItem(@in);
}
oLine++;
@in.ExtendA();
continue;
goto case (byte)('+');
}
case (byte)('+'):
{
if (@in == null)
{
@in = new Edit(oLine - 1, nLine - 1);
editList.AddItem(@in);
}
nLine++;
@in.ExtendB();
continue;
goto case (byte)('\\');
}
case (byte)('\\'):
{
// Matches "\ No newline at end of file"
continue;
goto default;
}
default:
{
goto SCAN_break;
break;
}
}
SCAN_continue: ;
}
SCAN_break: ;
}
return editList;
}
private DiffMarkerType GetMarkerType(Edit.Type type)
{
switch (type)
{
case Edit.Type.INSERT:
return DiffMarkerType.Added;
case Edit.Type.DELETE:
return DiffMarkerType.Removed;
case Edit.Type.REPLACE:
return DiffMarkerType.Changed;
default:
throw new ArgumentOutOfRangeException("type");
}
}
public virtual void TestToString()
{
Edit e = new Edit(1, 2, 1, 4);
NUnit.Framework.Assert.AreEqual("REPLACE(1-2,1-4)", e.ToString());
}
/// <summary>Construct a subsequence around the B region/base sequence.</summary>
/// <remarks>Construct a subsequence around the B region/base sequence.</remarks>
/// <?></?>
/// <param name="b">the B sequence.</param>
/// <param name="region">
/// the region of
/// <code>b</code>
/// to create a subsequence around.
/// </param>
/// <returns>
/// subsequence of
/// <code>base</code>
/// as described by B in
/// <code>region</code>
/// .
/// </returns>
public static NGit.Diff.Subsequence <S> B <S>(S b, Edit region) where S : Sequence
{
return(new NGit.Diff.Subsequence <S>(b, region.beginB, region.endB));
}
public virtual void TestRemove()
{
Edit e1 = new Edit(1, 2, 1, 1);
Edit e2 = new Edit(8, 8, 8, 12);
EditList l = new EditList();
l.AddItem(e1);
l.AddItem(e2);
l.Remove(e1);
NUnit.Framework.Assert.AreEqual(1, l.Count);
NUnit.Framework.Assert.AreSame(e2, l[0]);
}
/// <summary>Construct a new edit representing the region before cut.</summary>
/// <remarks>Construct a new edit representing the region before cut.</remarks>
/// <param name="cut">
/// the cut point. The beginning A and B points are used as the
/// end points of the returned edit.
/// </param>
/// <returns>
/// an edit representing the slice of
/// <code>this</code>
/// edit that occurs
/// before
/// <code>cut</code>
/// starts.
/// </returns>
public NGit.Diff.Edit Before(NGit.Diff.Edit cut)
{
return(new NGit.Diff.Edit(beginA, cut.beginA, beginB, cut.beginB));
}
public virtual void TestBeforeAfterCuts()
{
Edit whole = new Edit(1, 8, 2, 9);
Edit mid = new Edit(4, 5, 3, 6);
NUnit.Framework.Assert.AreEqual(new Edit(1, 4, 2, 3), whole.Before(mid));
NUnit.Framework.Assert.AreEqual(new Edit(5, 8, 6, 9), whole.After(mid));
}
/// <summary>Construct a new edit representing the region after cut.</summary>
/// <remarks>Construct a new edit representing the region after cut.</remarks>
/// <param name="cut">
/// the cut point. The ending A and B points are used as the
/// starting points of the returned edit.
/// </param>
/// <returns>
/// an edit representing the slice of
/// <code>this</code>
/// edit that occurs
/// after
/// <code>cut</code>
/// ends.
/// </returns>
public NGit.Diff.Edit After(NGit.Diff.Edit cut)
{
return(new NGit.Diff.Edit(cut.endA, endA, cut.endB, endB));
}
/// <summary>Construct a subsequence around the A region/base sequence.</summary>
/// <remarks>Construct a subsequence around the A region/base sequence.</remarks>
/// <?></?>
/// <param name="a">the A sequence.</param>
/// <param name="region">
/// the region of
/// <code>a</code>
/// to create a subsequence around.
/// </param>
/// <returns>
/// subsequence of
/// <code>base</code>
/// as described by A in
/// <code>region</code>
/// .
/// </returns>
public static NGit.Diff.Subsequence <S> A <S>(S a, Edit region) where S : Sequence
{
return(new NGit.Diff.Subsequence <S>(a, region.beginA, region.endA));
}
/// <summary>Compare two sequences and identify a list of edits between them.</summary>
/// <remarks>
/// Compare two sequences and identify a list of edits between them.
/// This method should be invoked only after the two sequences have been
/// proven to have no common starting or ending elements. The expected
/// elimination of common starting and ending elements is automatically
/// performed by the
/// <see cref="DiffAlgorithm.Diff{S}(SequenceComparator{S}, Sequence, Sequence)">DiffAlgorithm.Diff<S>(SequenceComparator<S>, Sequence, Sequence)
/// </see>
/// method, which invokes this method using
/// <see cref="Subsequence{S}">Subsequence<S></see>
/// s.
/// </remarks>
/// <?></?>
/// <param name="edits">result list to append the region's edits onto.</param>
/// <param name="cmp">the comparator supplying the element equivalence function.</param>
/// <param name="a">
/// the first (also known as old or pre-image) sequence. Edits
/// returned by this algorithm will reference indexes using the
/// 'A' side:
/// <see cref="Edit.GetBeginA()">Edit.GetBeginA()</see>
/// ,
/// <see cref="Edit.GetEndA()">Edit.GetEndA()</see>
/// .
/// </param>
/// <param name="b">
/// the second (also known as new or post-image) sequence. Edits
/// returned by this algorithm will reference indexes using the
/// 'B' side:
/// <see cref="Edit.GetBeginB()">Edit.GetBeginB()</see>
/// ,
/// <see cref="Edit.GetEndB()">Edit.GetEndB()</see>
/// .
/// </param>
/// <param name="region">the region being compared within the two sequences.</param>
public abstract void DiffNonCommon <S>(EditList edits, HashedSequenceComparator <S>
cmp, HashedSequence <S> a, HashedSequence <S> b, Edit region) where S : Sequence;
public virtual void TestType_Replace()
{
Edit e = new Edit(1, 2, 1, 4);
NUnit.Framework.Assert.AreEqual(Edit.Type.REPLACE, e.GetType());
NUnit.Framework.Assert.IsFalse(e.IsEmpty(), "not empty");
NUnit.Framework.Assert.AreEqual(1, e.GetLengthA());
NUnit.Framework.Assert.AreEqual(3, e.GetLengthB());
}
private static bool End(Edit edit, int a, int b)
{
return(edit.GetEndA() <= a && edit.GetEndB() <= b);
}
public virtual void TestType_Empty()
{
Edit e = new Edit(1, 1, 2, 2);
NUnit.Framework.Assert.AreEqual(Edit.Type.EMPTY, e.GetType());
NUnit.Framework.Assert.AreEqual(Edit.Type.EMPTY, new Edit(1, 2).GetType());
NUnit.Framework.Assert.IsTrue(e.IsEmpty(), "is empty");
NUnit.Framework.Assert.AreEqual(0, e.GetLengthA());
NUnit.Framework.Assert.AreEqual(0, e.GetLengthB());
}
public override void DiffNonCommon <S>(EditList edits, HashedSequenceComparator <S>
cmp, HashedSequence <S> a, HashedSequence <S> b, Edit region)
{
new HistogramDiff.State <S>(this, edits, cmp, a, b).DiffReplace(region);
}
public virtual void TestToString()
{
Edit e = new Edit(1, 2, 1, 4);
NUnit.Framework.Assert.AreEqual("REPLACE(1-2,1-4)", e.ToString());
}
private void WriteLine(StringBuilder @out, List<TextMarker> markers, Text text, int line, Edit.Type editType)
{
int start = @out.Length;
WriteLine(@out, text, line);
int end = @out.Length;
Color color;
switch (editType)
{
case Edit.Type.INSERT:
color = DiffColor.Added.LightColor;
break;
case Edit.Type.DELETE:
color = DiffColor.Removed.LightColor;
break;
case Edit.Type.REPLACE:
color = DiffColor.Changed.LightColor;
break;
default:
throw new ArgumentOutOfRangeException("editType");
}
markers.Add(new TextMarker(
start,
end - start,
TextMarkerType.SolidBlock | TextMarkerType.ExtendToBorder,
color
));
}
public virtual void TestEquals1()
{
Edit e1 = new Edit(1, 2, 3, 4);
Edit e2 = new Edit(1, 2, 3, 4);
NUnit.Framework.Assert.IsTrue(e1.Equals(e1));
NUnit.Framework.Assert.IsTrue(e1.Equals(e2));
NUnit.Framework.Assert.IsTrue(e2.Equals(e1));
NUnit.Framework.Assert.AreEqual(e1.GetHashCode(), e2.GetHashCode());
NUnit.Framework.Assert.IsFalse(e1.Equals(string.Empty));
}