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//
// VBNetTextEditorExtension.cs
//
// Author:
// Mike Krüger <mikkrg@microsoft.com>
//
// Copyright (c) 2016 Microsoft Corporation
//
// 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 MonoDevelop.Ide.Editor.Extension;
using Microsoft.CodeAnalysis.VisualBasic;
using Microsoft.CodeAnalysis.Text;
using MonoDevelop.Ide.TypeSystem;
using Microsoft.CodeAnalysis.Classification;
using Microsoft.CodeAnalysis;
using System.Linq;
using MonoDevelop.Ide.Editor.Highlighting;
using MonoDevelop.Ide.Editor;
using System.Collections.Immutable;
using System.Threading;
using System.Threading.Tasks;
using System.Collections.Generic;
namespace MonoDevelop.VBNet
{
class VBNetTextEditorExtension : TextEditorExtension
{
MonoDevelopWorkspace workspace = new MonoDevelopWorkspace (null);
Microsoft.CodeAnalysis.SyntaxTree parseTree;
internal static MetadataReference [] DefaultMetadataReferences;
DocumentId documentId;
static VBNetTextEditorExtension ()
{
try {
var mscorlib = MetadataReference.CreateFromFile (typeof (Console).Assembly.Location);
var systemAssembly = MetadataReference.CreateFromFile (typeof (System.Text.RegularExpressions.Regex).Assembly.Location);
//systemXmlLinq = MetadataReference.CreateFromFile (typeof(System.Xml.Linq.XElement).Assembly.Location);
var systemCore = MetadataReference.CreateFromFile (typeof (Enumerable).Assembly.Location);
DefaultMetadataReferences = new [] {
mscorlib,
systemAssembly,
systemCore,
//systemXmlLinq
};
} catch (Exception e) {
Console.WriteLine (e);
}
}
protected override void Initialize ()
{
base.Initialize ();
parseTree = VisualBasicSyntaxTree.ParseText (Editor.Text);
var sourceText = SourceText.From (Editor.Text);
var projectId = ProjectId.CreateNewId ();
documentId = DocumentId.CreateNewId (projectId);
var projectInfo = ProjectInfo.Create (
projectId,
VersionStamp.Create (),
"TestProject",
"TestProject",
LanguageNames.VisualBasic,
null,
null,
new VisualBasicCompilationOptions (
OutputKind.DynamicallyLinkedLibrary
),
new VisualBasicParseOptions (),
new [] {
DocumentInfo.Create(
documentId,
Editor.FileName,
null,
SourceCodeKind.Regular,
TextLoader.From(TextAndVersion.Create(sourceText, VersionStamp.Create())),
filePath: Editor.FileName
)
},
null,
DefaultMetadataReferences
);
var sInfo = SolutionInfo.Create (
SolutionId.CreateNewId (),
VersionStamp.Create (),
null,
new [] { projectInfo }
);
workspace.OpenSolutionInfo (sInfo);
Editor.SyntaxHighlighting = new ClassificationSyntaxHighlighting (workspace, documentId);
workspace.InformDocumentOpen (documentId, Editor);
}
public override void Dispose ()
{
base.Dispose ();
workspace.CloseDocument (documentId);
}
class ClassificationSyntaxHighlighting : ISyntaxHighlighting
{
DocumentId documentId;
MonoDevelopWorkspace workspace;
public ClassificationSyntaxHighlighting (MonoDevelopWorkspace workspace, DocumentId documentId)
{
this.workspace = workspace;
this.documentId = documentId;
}
public event EventHandler<LineEventArgs> HighlightingStateChanged;
public async Task<HighlightedLine> GetHighlightedLineAsync (IDocumentLine line, CancellationToken cancellationToken)
{
List<ColoredSegment> coloredSegments = new List<ColoredSegment> ();
int offset = line.Offset;
int length = line.Length;
var span = new TextSpan (offset, length);
var classifications = Classifier.GetClassifiedSpans (await workspace.GetDocument (documentId).GetSemanticModelAsync (), span, workspace, cancellationToken);
int lastClassifiedOffsetEnd = offset;
ScopeStack scopeStack;
foreach (var curSpan in classifications) {
if (curSpan.TextSpan.Start > lastClassifiedOffsetEnd) {
scopeStack = vbScope.Push (EditorThemeColors.UserTypes);
ColoredSegment whitespaceSegment = new ColoredSegment (lastClassifiedOffsetEnd, curSpan.TextSpan.Start - lastClassifiedOffsetEnd, scopeStack);
coloredSegments.Add (whitespaceSegment);
}
string styleName = GetStyleNameFromClassificationType (curSpan.ClassificationType);
scopeStack = vbScope.Push (styleName);
ColoredSegment curColoredSegment = new ColoredSegment (curSpan.TextSpan.Start, curSpan.TextSpan.Length, scopeStack);
coloredSegments.Add (curColoredSegment);
lastClassifiedOffsetEnd = curSpan.TextSpan.End;
}
if (offset + length > lastClassifiedOffsetEnd) {
scopeStack = vbScope.Push (EditorThemeColors.UserTypes);
ColoredSegment whitespaceSegment = new ColoredSegment (lastClassifiedOffsetEnd, offset + length - lastClassifiedOffsetEnd, scopeStack);
coloredSegments.Add (whitespaceSegment);
}
return new HighlightedLine (line, coloredSegments);
}
private string GetStyleNameFromClassificationType (string classificationType)
{
switch (classificationType) {
case ClassificationTypeNames.Comment:
case ClassificationTypeNames.ExcludedCode:
return "comment.source.vb";
case ClassificationTypeNames.PreprocessorKeyword:
return "keyword.source.vb";
case ClassificationTypeNames.Keyword:
return "keyword.source.vb";
case ClassificationTypeNames.StringLiteral:
return "string.quoted.double.source.cs";
case ClassificationTypeNames.VerbatimStringLiteral:
return "string.quoted.other.verbatim.source.vb";
default:
return "";
}
}
static readonly ScopeStack vbScope = new ScopeStack ("source.vb");
public Task<ScopeStack> GetScopeStackAsync (int offset, CancellationToken cancellationToken)
{
return Task.FromResult (vbScope);
}
}
}
}
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