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//
// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License. See License.txt in the project root for license information.
//
// This file contain implementations details that are subject to change without notice.
// Use at your own risk.
//
namespace Microsoft.VisualStudio.Text.EditorPrimitives.Implementation
{
using System;
using System.Collections.Generic;
using Microsoft.VisualStudio.Text;
using Microsoft.VisualStudio.Text.Editor;
internal sealed class DefaultBufferPrimitive : TextBuffer
{
#region Private members
private ITextBuffer _textBuffer;
private IBufferPrimitivesFactoryService _bufferPrimitivesFactory;
#endregion
public DefaultBufferPrimitive(ITextBuffer textBuffer, IBufferPrimitivesFactoryService bufferPrimitivesFactory)
{
_textBuffer = textBuffer;
_bufferPrimitivesFactory = bufferPrimitivesFactory;
}
public override TextPoint GetTextPoint(int position)
{
if ((position < 0) || (position > _textBuffer.CurrentSnapshot.Length))
{
throw new ArgumentOutOfRangeException(nameof(position));
}
return _bufferPrimitivesFactory.CreateTextPoint(this, position);
}
public override TextPoint GetTextPoint(int line, int column)
{
if ((line < 0) || (line > _textBuffer.CurrentSnapshot.LineCount))
{
throw new ArgumentOutOfRangeException(nameof(line));
}
ITextSnapshotLine snapshotLine = _textBuffer.CurrentSnapshot.GetLineFromLineNumber(line);
if ((column < 0) || (column > snapshotLine.Length))
{
throw new ArgumentOutOfRangeException(nameof(column));
}
return _bufferPrimitivesFactory.CreateTextPoint(this, snapshotLine.Start + column);
}
public override TextRange GetLine(int line)
{
if ((line < 0) || (line > _textBuffer.CurrentSnapshot.LineCount))
{
throw new ArgumentOutOfRangeException(nameof(line));
}
ITextSnapshotLine snapshotLine = _textBuffer.CurrentSnapshot.GetLineFromLineNumber(line);
return GetTextRange(snapshotLine.Extent.Start, snapshotLine.Extent.End);
}
public override TextRange GetTextRange(TextPoint startPoint, TextPoint endPoint)
{
if (startPoint == null)
{
throw new ArgumentNullException(nameof(startPoint));
}
if (endPoint == null)
{
throw new ArgumentNullException(nameof(endPoint));
}
if (!object.ReferenceEquals(startPoint.TextBuffer, this))
{
throw new ArgumentException(Strings.TextPointFromWrongBuffer);
}
if (!object.ReferenceEquals(endPoint.TextBuffer, this))
{
throw new ArgumentException(Strings.TextPointFromWrongBuffer);
}
return _bufferPrimitivesFactory.CreateTextRange(this, startPoint, endPoint);
}
public override TextRange GetTextRange(int startPosition, int endPosition)
{
if ((startPosition < 0) || (startPosition > _textBuffer.CurrentSnapshot.Length))
{
throw new ArgumentOutOfRangeException(nameof(startPosition));
}
if ((endPosition < 0) || (endPosition > _textBuffer.CurrentSnapshot.Length))
{
throw new ArgumentOutOfRangeException(nameof(endPosition));
}
TextPoint startPoint = GetTextPoint(startPosition);
TextPoint endPoint = GetTextPoint(endPosition);
return _bufferPrimitivesFactory.CreateTextRange(this, startPoint, endPoint);
}
public override ITextBuffer AdvancedTextBuffer
{
get { return _textBuffer; }
}
public override TextPoint GetStartPoint()
{
return GetTextPoint(0);
}
public override TextPoint GetEndPoint()
{
return GetTextPoint(_textBuffer.CurrentSnapshot.Length);
}
public override IEnumerable<TextRange> Lines
{
get
{
foreach (ITextSnapshotLine line in _textBuffer.CurrentSnapshot.Lines)
{
yield return GetTextRange(line.Start, line.End);
}
}
}
}
}
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