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//
// SemanticHighlightingSyntaxMode.cs
//
// Author:
// Mike Krüger <mkrueger@xamarin.com>
//
// Copyright (c) 2014 Xamarin Inc. (http://xamarin.com)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
using System;
using Mono.TextEditor.Highlighting;
using MonoDevelop.Ide.Editor.Highlighting;
using Mono.TextEditor;
using System.Collections.Generic;
using MonoDevelop.Ide.Editor;
using System.Linq;
using Gtk;
namespace MonoDevelop.SourceEditor.Wrappers
{
sealed class SemanticHighlightingSyntaxMode : SyntaxMode
{
readonly ExtensibleTextEditor editor;
readonly SyntaxMode syntaxMode;
readonly SemanticHighlighting semanticHighlighting;
public override TextDocument Document {
get {
return syntaxMode.Document;
}
set {
syntaxMode.Document = value;
}
}
internal class StyledTreeSegment : Mono.TextEditor.TreeSegment
{
public string Style {
get;
private set;
}
public StyledTreeSegment (int offset, int length, string style) : base (offset, length)
{
Style = style;
}
}
class HighlightingSegmentTree : Mono.TextEditor.SegmentTree<StyledTreeSegment>
{
public bool GetStyle (Chunk chunk, ref int endOffset, out string style)
{
var segment = GetSegmentsAt (chunk.Offset).FirstOrDefault ();
if (segment == null) {
style = null;
return false;
}
endOffset = segment.EndOffset;
style = segment.Style;
return true;
}
public void AddStyle (MonoDevelop.Core.Text.ISegment segment, string style)
{
if (IsDirty)
return;
Add (new StyledTreeSegment (segment.Offset, segment.Length, style));
}
}
Dictionary<DocumentLine, HighlightingSegmentTree> lineSegments = new Dictionary<DocumentLine, HighlightingSegmentTree> ();
public SemanticHighlightingSyntaxMode (ExtensibleTextEditor editor, ISyntaxMode syntaxMode, SemanticHighlighting semanticHighlighting)
{
if (editor == null)
throw new ArgumentNullException ("editor");
if (syntaxMode == null)
throw new ArgumentNullException ("syntaxMode");
if (semanticHighlighting == null)
throw new ArgumentNullException ("semanticHighlighting");
this.editor = editor;
this.semanticHighlighting = semanticHighlighting;
this.syntaxMode = syntaxMode as SyntaxMode;
semanticHighlighting.SemanticHighlightingUpdated += delegate {
Application.Invoke (delegate {
foreach (var kv in lineSegments) {
try {
kv.Value.RemoveListener ();
} catch (Exception) {
}
}
lineSegments.Clear ();
var margin = editor.TextViewMargin;
margin.PurgeLayoutCache ();
editor.QueueDraw ();
});
};
}
public override SpanParser CreateSpanParser (Mono.TextEditor.DocumentLine line, CloneableStack<Span> spanStack)
{
return syntaxMode.CreateSpanParser (line, spanStack);
}
public override ChunkParser CreateChunkParser (SpanParser spanParser, Mono.TextEditor.Highlighting.ColorScheme style, DocumentLine line)
{
return new CSharpChunkParser (this, spanParser, style, line);
}
class CSharpChunkParser : ChunkParser
{
SemanticHighlightingSyntaxMode semanticMode;
int lineNumber;
public CSharpChunkParser (SemanticHighlightingSyntaxMode semanticMode, SpanParser spanParser, Mono.TextEditor.Highlighting.ColorScheme style, DocumentLine line) : base (semanticMode, spanParser, style, line)
{
lineNumber = line.LineNumber;
this.semanticMode = semanticMode;
}
protected override void AddRealChunk (Chunk chunk)
{
if (!DefaultSourceEditorOptions.Instance.EnableSemanticHighlighting) {
base.AddRealChunk (chunk);
return;
}
int endLoc = -1;
string semanticStyle = null;
try {
HighlightingSegmentTree tree;
if (!semanticMode.lineSegments.TryGetValue (line, out tree)) {
tree = new HighlightingSegmentTree ();
tree.InstallListener (semanticMode.Document);
foreach (var seg in semanticMode.semanticHighlighting.GetColoredSegments (new MonoDevelop.Core.Text.TextSegment (line.Offset, line.Length))) {
tree.AddStyle (seg, seg.ColorStyleKey);
}
semanticMode.lineSegments[line] = tree;
}
string style;
if (tree.GetStyle (chunk, ref endLoc, out style)) {
semanticStyle = style;
}
} catch (Exception e) {
Console.WriteLine ("Error in semantic highlighting: " + e);
}
if (semanticStyle != null) {
if (endLoc < chunk.EndOffset) {
base.AddRealChunk (new Chunk (chunk.Offset, endLoc - chunk.Offset, semanticStyle));
base.AddRealChunk (new Chunk (endLoc, chunk.EndOffset - endLoc, chunk.Style));
return;
}
chunk.Style = semanticStyle;
}
base.AddRealChunk (chunk);
}
protected override string GetStyle (Chunk chunk)
{
/*if (spanParser.CurRule.Name == "Comment") {
if (tags.Contains (doc.GetTextAt (chunk)))
return "Comment Tag";
}*/
return base.GetStyle (chunk);
}
}
}
}
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