Add bracket highlighting to ILSpy.

ILSpy/ILSpy.csproj

@@ -140,6 +140,7 @@
     <Compile Include="GacInterop.cs" />
     <Compile Include="GuessFileType.cs" />
     <Compile Include="ContextMenuEntry.cs" />
+    <Compile Include="Languages\CSharpBracketSearcher.cs" />
     <Compile Include="Languages\CSharpILMixedLanguage.cs" />
     <Compile Include="Languages\CSharpLanguage.cs" />
     <Compile Include="Languages\CSharpLexer.cs" />
@@ -206,6 +207,7 @@
     <Compile Include="Search\AbstractSearchStrategy.cs" />
     <Compile Include="SolutionWriter.cs" />
     <Compile Include="TaskHelper.cs" />
+    <Compile Include="TextView\BracketHighlightRenderer.cs" />
     <Compile Include="TextView\EditorCommands.cs" />
     <Compile Include="TextView\FoldingCommands.cs" />
     <Compile Include="Commands\SaveCodeContextMenuEntry.cs" />

ILSpy/Languages/CSharpHighlightingTokenWriter.cs

@@ -1,4 +1,22 @@
-using System;
+// Copyright (c) 2018 Siegfried Pammer
+// 
+// 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 System.Collections.Generic;
 using System.Linq;
 using ICSharpCode.AvalonEdit.Highlighting;

ILSpy/Languages/CSharpLanguage.cs

@@ -37,6 +37,7 @@ using ICSharpCode.Decompiler.Output;
 using ICSharpCode.Decompiler.Solution;
 using ICSharpCode.Decompiler.TypeSystem;
 using ICSharpCode.Decompiler.Util;
+using ICSharpCode.ILSpy.TextView;
 using ICSharpCode.ILSpy.TreeNodes;
 
 namespace ICSharpCode.ILSpy
@@ -634,5 +635,9 @@ namespace ICSharpCode.ILSpy
 		{
 			return CSharpDecompiler.GetCodeMappingInfo(module, member);
 		}
+
+		CSharpBracketSearcher bracketSearcher = new CSharpBracketSearcher();
+
+		public override IBracketSearcher BracketSearcher => bracketSearcher;
 	}
 }

ILSpy/Languages/Language.cs

@@ -102,6 +102,12 @@ namespace ICSharpCode.ILSpy
 			}
 		}
 
+		public virtual TextView.IBracketSearcher BracketSearcher {
+			get {
+				return TextView.DefaultBracketSearcher.DefaultInstance;
+			}
+		}
+
 		public virtual void DecompileMethod(IMethod method, ITextOutput output, DecompilationOptions options)
 		{
 			WriteCommentLine(output, TypeToString(method.DeclaringTypeDefinition, includeNamespace: true) + "." + method.Name);

ILSpy/Options/DisplaySettings.cs

@@ -215,6 +215,18 @@ namespace ICSharpCode.ILSpy.Options
 			}
 		}
 
+		bool highlightMatchingBraces = true;
+
+		public bool HighlightMatchingBraces {
+			get { return highlightMatchingBraces; }
+			set {
+				if (highlightMatchingBraces != value) {
+					highlightMatchingBraces = value;
+					OnPropertyChanged();
+				}
+			}
+		}
+
 		public void CopyValues(DisplaySettings s)
 		{
 			this.SelectedFont = s.selectedFont;
@@ -231,6 +243,7 @@ namespace ICSharpCode.ILSpy.Options
 			this.IndentationUseTabs = s.indentationUseTabs;
 			this.IndentationTabSize = s.indentationTabSize;
 			this.IndentationSize = s.indentationSize;
+			this.HighlightMatchingBraces = s.highlightMatchingBraces;
 		}
 	}
 }

ILSpy/Options/DisplaySettingsPanel.xaml

@@ -80,6 +80,7 @@
 				<CheckBox IsChecked="{Binding ShowDebugInfo}" Content="{x:Static properties:Resources.ShowInfoFromDebugSymbolsAvailable}"></CheckBox>
 				<CheckBox IsChecked="{Binding EnableWordWrap}" Content="{x:Static properties:Resources.EnableWordWrap}"></CheckBox>
 				<CheckBox IsChecked="{Binding FoldBraces}" Content="{x:Static properties:Resources.EnableFoldingBlocksBraces}"></CheckBox>
+				<CheckBox IsChecked="{Binding HighlightMatchingBraces}" Content="{x:Static properties:Resources.HighlightMatchingBraces}"></CheckBox>
 				<CheckBox IsChecked="{Binding SortResults}" Content="{x:Static properties:Resources.SortResultsFitness}"></CheckBox>
 				<CheckBox IsChecked="{Binding ExpandMemberDefinitions}" Content="{x:Static properties:Resources.ExpandMemberDefinitionsAfterDecompilation}"></CheckBox>
 				<CheckBox IsChecked="{Binding ExpandUsingDeclarations}" Content="{x:Static properties:Resources.ExpandUsingDeclarationsAfterDecompilation}"></CheckBox>

ILSpy/Options/DisplaySettingsPanel.xaml.cs

@@ -114,6 +114,7 @@ namespace ICSharpCode.ILSpy.Options
 			s.IndentationUseTabs = (bool?)e.Attribute("IndentationUseTabs") ?? true;
 			s.IndentationSize = (int?)e.Attribute("IndentationSize") ?? 4;
 			s.IndentationTabSize = (int?)e.Attribute("IndentationTabSize") ?? 4;
+			s.HighlightMatchingBraces = (bool?)e.Attribute("HighlightMatchingBraces") ?? true;
 
 			return s;
 		}
@@ -136,6 +137,7 @@ namespace ICSharpCode.ILSpy.Options
 			section.SetAttributeValue("IndentationUseTabs", s.IndentationUseTabs);
 			section.SetAttributeValue("IndentationSize", s.IndentationSize);
 			section.SetAttributeValue("IndentationTabSize", s.IndentationTabSize);
+			section.SetAttributeValue("HighlightMatchingBraces", s.HighlightMatchingBraces);
 
 			XElement existingElement = root.Element("DisplaySettings");
 			if (existingElement != null)

ILSpy/Properties/Resources.Designer.cs

@@ -1152,6 +1152,15 @@ namespace ICSharpCode.ILSpy.Properties {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Highlight matching braces.
+        /// </summary>
+        public static string HighlightMatchingBraces {
+            get {
+                return ResourceManager.GetString("HighlightMatchingBraces", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to ILSpy version .
         /// </summary>

ILSpy/Properties/Resources.resx

@@ -742,4 +742,7 @@ Are you sure you want to continue?</value>
   <data name="AssemblySaveCodeDirectoryNotEmptyTitle" xml:space="preserve">
     <value>Project Directory not empty</value>
   </data>
+  <data name="HighlightMatchingBraces" xml:space="preserve">
+    <value>Highlight matching braces</value>
+  </data>
 </root>

ILSpy/TextView/DecompilerTextView.cs

@@ -65,6 +65,7 @@ namespace ICSharpCode.ILSpy.TextView
 		readonly UIElementGenerator uiElementGenerator;
 		List<VisualLineElementGenerator> activeCustomElementGenerators = new List<VisualLineElementGenerator>();
 		RichTextColorizer activeRichTextColorizer;
+		BracketHighlightRenderer bracketHighlightRenderer;
 		FoldingManager foldingManager;
 		ILSpyTreeNode[] decompiledNodes;
 		
@@ -103,12 +104,14 @@ namespace ICSharpCode.ILSpy.TextView
 			this.referenceElementGenerator = new ReferenceElementGenerator(this.JumpToReference, this.IsLink);
 			textEditor.TextArea.TextView.ElementGenerators.Add(referenceElementGenerator);
 			this.uiElementGenerator = new UIElementGenerator();
+			this.bracketHighlightRenderer = new BracketHighlightRenderer(textEditor.TextArea.TextView);
 			textEditor.TextArea.TextView.ElementGenerators.Add(uiElementGenerator);
 			textEditor.Options.RequireControlModifierForHyperlinkClick = false;
 			textEditor.TextArea.TextView.MouseHover += TextViewMouseHover;
 			textEditor.TextArea.TextView.MouseHoverStopped += TextViewMouseHoverStopped;
 			textEditor.TextArea.PreviewMouseDown += TextAreaMouseDown;
 			textEditor.TextArea.PreviewMouseUp += TextAreaMouseUp;
+			textEditor.TextArea.Caret.PositionChanged += HighlightBrackets;
 			textEditor.SetBinding(Control.FontFamilyProperty, new Binding { Source = DisplaySettingsPanel.CurrentDisplaySettings, Path = new PropertyPath("SelectedFont") });
 			textEditor.SetBinding(Control.FontSizeProperty, new Binding { Source = DisplaySettingsPanel.CurrentDisplaySettings, Path = new PropertyPath("SelectedFontSize") });
 			textEditor.SetBinding(TextEditor.WordWrapProperty, new Binding { Source = DisplaySettingsPanel.CurrentDisplaySettings, Path = new PropertyPath("EnableWordWrap") });
@@ -245,6 +248,18 @@ namespace ICSharpCode.ILSpy.TextView
 		}
 		#endregion
 
+		#region Highlight brackets
+		void HighlightBrackets(object sender, EventArgs e)
+		{
+			if (DisplaySettingsPanel.CurrentDisplaySettings.HighlightMatchingBraces) {
+				var result = MainWindow.Instance.CurrentLanguage.BracketSearcher.SearchBracket(textEditor.Document, textEditor.CaretOffset);
+				bracketHighlightRenderer.SetHighlight(result);
+			} else {
+				bracketHighlightRenderer.SetHighlight(null);
+			}
+		}
+		#endregion
+
 		#region RunWithCancellation
 		/// <summary>
 		/// Switches the GUI into "waiting" mode, then calls <paramref name="taskCreation"/> to create