public void TestMerge()
{
var loc1 = new SourcePosition(0, 1, 1);
var loc2 = new SourcePosition(2, 1, 3);
var loc3 = new SourcePosition(5, 2, 6);
var loc4 = new SourcePosition(6, 1, 7);
var loc5 = new SourcePosition(9, 2, 14);
Assert.AreEqual(SourceRange.Unknown, SourceRange.Merge());
Assert.AreEqual(SourceRange.Unknown, SourceRange.Merge(null));
Assert.AreEqual(SourceRange.Unknown, SourceRange.Merge(SourceRange.Unknown));
Assert.AreEqual(SourceRange.Unknown, SourceRange.Merge(SourceRange.Unknown, SourceRange.Unknown));
Assert.AreEqual(new SourceRange(loc1), SourceRange.Merge(SourceRange.Unknown, new SourceRange(loc1)));
Assert.AreEqual(new SourceRange(loc1),
SourceRange.Merge(SourceRange.Unknown, new SourceRange(loc1), SourceRange.Unknown, new SourceRange(loc1)));
Assert.AreEqual(new SourceRange(loc1, loc5),
SourceRange.Merge(new SourceRange(loc3, loc5), SourceRange.Unknown, new SourceRange(loc1)));
Assert.AreEqual(new SourceRange(loc1, loc5),
SourceRange.Merge(new SourceRange(loc3, loc5), new SourceRange(loc1, loc5)));
Assert.AreEqual(new SourceRange(loc1, loc5),
SourceRange.Merge(new SourceRange(loc4, loc5), new SourceRange(loc1, loc2), new SourceRange(loc2, loc3)));
Assert.AreEqual(new SourceRange(loc2, loc5),
SourceRange.Merge(new SourceRange(loc3, loc5), new SourceRange(loc2, loc3)));
Assert.AreEqual(new SourceRange(loc2, loc5),
SourceRange.Merge(new SourceRange(loc4, loc5), new SourceRange(loc2, loc3)));
Assert.AreEqual(new SourceRange(loc1, loc3),
SourceRange.Merge(new SourceRange(loc1, loc2), new SourceRange(loc2, loc3)));
}
/// <summary>
/// 向 <see cref="ParserController<T>"/> 中添加指定堆栈中的词法单元。
/// </summary>
/// <param name="stack">要添加词法单元的堆栈。</param>
/// <param name="count">要添加的词法单元的数量。</param>
internal void InternalAdd(Stack <Token <T> > stack, int count)
{
while (this.Count > count)
{
base.Items.RemoveAt(this.Count - 1);
}
while (this.Count < count)
{
base.Items.Add(null);
}
if (count == 0)
{
if (stack.Count == 0)
{
this.Start = SourcePosition.Unknown;
}
else
{
this.Start = stack.Peek().Start;
}
this.End = this.Start;
}
else
{
while (count-- > 0)
{
base.Items[count] = stack.Pop();
}
SourceRange range = SourceRange.Merge((IEnumerable <ISourceLocatable>) this);
this.Start = range.Start;
this.End = range.End;
}
}
public void TestProperties()
{
var loc1 = new SourcePosition(0, 1, 1);
var loc2 = new SourcePosition(2, 1, 3);
Assert.AreEqual(true, SourceRange.Unknown.IsUnknown);
Assert.AreEqual(true, new SourceRange(SourcePosition.Unknown).IsUnknown);
Assert.AreEqual(true, new SourceRange(SourcePosition.Unknown, SourcePosition.Unknown).IsUnknown);
Assert.AreEqual(true, new SourceRange(new SourceRange(SourcePosition.Unknown, SourcePosition.Unknown)).IsUnknown);
Assert.AreEqual(false, new SourceRange(loc1).IsUnknown);
Assert.AreEqual(false, SourceRange.Merge(SourceRange.Unknown, new SourceRange(loc1)).IsUnknown);
Assert.AreEqual(0, SourceRange.Unknown.Length);
Assert.AreEqual(0, new SourceRange(new SourceRange(SourcePosition.Unknown, SourcePosition.Unknown)).Length);
Assert.AreEqual(1, new SourceRange(loc1).Length);
Assert.AreEqual(3, new SourceRange(loc1, loc2).Length);
}
public void TestMerge()
{
SourceLocation loc1 = new SourceLocation(0, 1, 1);
SourceLocation loc2 = new SourceLocation(2, 1, 3);
SourceLocation loc3 = new SourceLocation(5, 1, 6);
SourceLocation loc4 = new SourceLocation(6, 2, 1);
SourceLocation loc5 = new SourceLocation(9, 2, 4);
Assert.AreEqual(SourceRange.Unknown, SourceRange.Merge(SourceRange.Unknown));
Assert.AreEqual(SourceRange.Unknown, SourceRange.Merge(SourceRange.Unknown, SourceRange.Unknown));
Assert.AreEqual(new SourceRange(loc1), SourceRange.Merge(SourceRange.Unknown, new SourceRange(loc1)));
Assert.AreEqual(new SourceRange(loc1),
SourceRange.Merge(SourceRange.Unknown, new SourceRange(loc1), SourceRange.Unknown, new SourceRange(loc1)));
Assert.AreEqual(new SourceRange(loc1, loc5),
SourceRange.Merge(new SourceRange(loc3, loc5), SourceRange.Unknown, new SourceRange(loc1)));
Assert.AreEqual(new SourceRange(loc1, loc5),
SourceRange.Merge(new SourceRange(loc3, loc5), new SourceRange(loc1, loc5)));
Assert.AreEqual(new SourceRange(loc1, loc5),
SourceRange.Merge(new SourceRange(loc4, loc5), new SourceRange(loc1, loc2), new SourceRange(loc2, loc3)));
Assert.AreEqual(new SourceRange(loc2, loc5),
SourceRange.Merge(new SourceRange(loc3, loc5), new SourceRange(loc2, loc3)));
Assert.AreEqual(new SourceRange(loc2, loc5),
SourceRange.Merge(new SourceRange(loc4, loc5), new SourceRange(loc2, loc3)));
Assert.AreEqual(new SourceRange(loc1, loc3),
SourceRange.Merge(new SourceRange(loc1, loc2), new SourceRange(loc2, loc3)));
Assert.AreEqual(SourceRange.Unknown, SourceRange.Unknown.MergeWith());
Assert.AreEqual(SourceRange.Unknown, SourceRange.Unknown.MergeWith(SourceRange.Unknown));
Assert.AreEqual(new SourceRange(loc1), SourceRange.Unknown.MergeWith(new SourceRange(loc1)));
Assert.AreEqual(new SourceRange(loc1), new SourceRange(loc1).MergeWith(SourceRange.Unknown));
Assert.AreEqual(new SourceRange(loc1),
SourceRange.Unknown.MergeWith(new SourceRange(loc1), SourceRange.Unknown, new SourceRange(loc1)));
Assert.AreEqual(new SourceRange(loc1, loc5),
new SourceRange(loc3, loc5).MergeWith(SourceRange.Unknown, new SourceRange(loc1)));
Assert.AreEqual(new SourceRange(loc1, loc5),
new SourceRange(loc3, loc5).MergeWith(new SourceRange(loc1, loc5)));
Assert.AreEqual(new SourceRange(loc1, loc5),
new SourceRange(loc4, loc5).MergeWith(new SourceRange(loc1, loc2), new SourceRange(loc2, loc3)));
Assert.AreEqual(new SourceRange(loc2, loc5),
new SourceRange(loc3, loc5).MergeWith(new SourceRange(loc2, loc3)));
Assert.AreEqual(new SourceRange(loc2, loc5),
new SourceRange(loc4, loc5).MergeWith(new SourceRange(loc2, loc3)));
Assert.AreEqual(new SourceRange(loc1, loc3),
new SourceRange(loc1, loc2).MergeWith(new SourceRange(loc2, loc3)));
}