我正在尝试基于 SharpDevelop TextEditor 创建一个 vb.net 用户控件。我想要语法高亮和代码完成。为了做到这一点，我决定从 SharpDevelop 的源代码（版本 3.2.1.6466）中移植 CSharpCodeCompletion 示例。它在文件夹“samples\CSharpCodeCompletion”中
控件似乎在运行，语法突出显示正常，并且在“。”时显示代码完成窗口。（句号）键被按下。所有成员都在完成窗口中列出。现在我面临三个问题： 1. 当显示代码完成窗口时，任何击键都会进入编辑器，因此列表框中的搜索功能不起作用。2. 当我从列表框中选择一个条目时，单词会返回到编辑器，但会删除句点。例如，我正在输入“字符串”。--> 显示列表框 --> 选择单词“Empty”，我在编辑器中得到“StringEmpty”。3. 在这个命令Return GetMemberText(ambience, CType(c, ICSharpCode.SharpDevelop.Dom.IMember))中，我得到一个强制转换异常。
请注意，当我从示例编译和运行原始 C# 代码时，编辑器和完成窗口按预期工作。我的猜测集中在两件事上，首先有一个问题，因为我将编辑器放在用户控件而不是示例中的表单中，但是我在代码中看不到任何明显的问题指向这个方向。其次，由于将 C# 代码移植到 VB，因此存在问题。C# 根本不是我的菜，但我尽我所能（我知道一些 Java）将整个东西重写为 VB。
我知道我的代码很大，但我会发布整个控制代码，以防有人想将它加载到 VS2010 并试一试。在这种情况下，您将需要示例 bin 文件夹中的 ICSharpCode.NRefactory、ICSharpCode.SharpDevelop.Dom、ICSharpCode.TextEditor、log4net 和 Mono.Cecil 程序集。
谢谢，请原谅我的英语。这是我的代码
Public Class ctlVBCodeEditor
Private Class HostCallbackImplementation
Private Shared Sub ShowMessageWithException(msg As String, ex As Exception)
DevExpress.XtraEditors.XtraMessageBox.Show(msg & vbCrLf & ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Stop)
End Sub
Private Shared Sub ShowMessage(msg As String)
DevExpress.XtraEditors.XtraMessageBox.Show(msg, "Error", MessageBoxButtons.OK, MessageBoxIcon.Stop)
End Sub
Private Shared Sub ShowAssemblyLoadError(fileName As String, include As String, msg As String)
DevExpress.XtraEditors.XtraMessageBox.Show(msg & vbCrLf & "File: " & fileName & vbCrLf & "Include: " & include, "Error", MessageBoxButtons.OK, MessageBoxIcon.Stop)
End Sub
Public Shared Sub Register(ctlCode As ctlVBCodeEditor)
ICSharpCode.SharpDevelop.Dom.HostCallback.GetCurrentProjectContent = New Func(Of ICSharpCode.SharpDevelop.Dom.IProjectContent)(Function() ctlCode.myContent)
ICSharpCode.SharpDevelop.Dom.HostCallback.ShowError = New Action(Of String, System.Exception)(AddressOf ShowMessageWithException)
ICSharpCode.SharpDevelop.Dom.HostCallback.ShowMessage = New Action(Of String)(AddressOf ShowMessage)
ICSharpCode.SharpDevelop.Dom.HostCallback.ShowAssemblyLoadError = New Action(Of String, String, String)(AddressOf ShowAssemblyLoadError)
End Sub
End Class
Private Class CodeCompletionData
Inherits ICSharpCode.TextEditor.Gui.CompletionWindow.DefaultCompletionData
Implements ICSharpCode.TextEditor.Gui.CompletionWindow.ICompletionData
Private Shared vbAmbience As ICSharpCode.SharpDevelop.Dom.VBNet.VBNetAmbience = New ICSharpCode.SharpDevelop.Dom.VBNet.VBNetAmbience
Private Shared Function GetMemberImageIndex(m As ICSharpCode.SharpDevelop.Dom.IMember) As Integer
Dim Result As Integer = 0
If TypeOf m Is ICSharpCode.SharpDevelop.Dom.IMethod Then
Result = 1
ElseIf TypeOf m Is ICSharpCode.SharpDevelop.Dom.IProperty Then
Result = 2
ElseIf TypeOf m Is ICSharpCode.SharpDevelop.Dom.IField Then
Result = 3
ElseIf TypeOf m Is ICSharpCode.SharpDevelop.Dom.IEvent Then
Result = 6
Else
Result = 3
End If
Return Result
End Function
Private Shared Function GetClassImageIndex(cl As ICSharpCode.SharpDevelop.Dom.IClass) As Integer
Dim Result As Integer = 0
If cl.ClassType = ICSharpCode.SharpDevelop.Dom.ClassType.Enum Then
Result = 4
End If
Return Result
End Function
Private Shared Function GetEntityText(e As ICSharpCode.SharpDevelop.Dom.IEntity) As String
Dim Result As String = String.Empty
Dim amb As ICSharpCode.SharpDevelop.Dom.IAmbience = vbAmbience
If TypeOf e Is ICSharpCode.SharpDevelop.Dom.IMethod Then
Result = amb.Convert(CType(e, ICSharpCode.SharpDevelop.Dom.IMethod))
ElseIf TypeOf e Is ICSharpCode.SharpDevelop.Dom.IProperty Then
Result = amb.Convert(CType(e, ICSharpCode.SharpDevelop.Dom.IProperty))
ElseIf TypeOf e Is ICSharpCode.SharpDevelop.Dom.IEvent Then
Result = amb.Convert(CType(e, ICSharpCode.SharpDevelop.Dom.IEvent))
ElseIf TypeOf e Is ICSharpCode.SharpDevelop.Dom.IField Then
Result = amb.Convert(CType(e, ICSharpCode.SharpDevelop.Dom.IField))
ElseIf TypeOf e Is ICSharpCode.SharpDevelop.Dom.IClass Then
Result = amb.Convert(CType(e, ICSharpCode.SharpDevelop.Dom.IClass))
Else
Result = e.ToString
End If
Return Result
End Function
Public Shared Function XmlDocumentationToText(xmlDoc As String) As String
Dim sb As New System.Text.StringBuilder
Try
Using reader As New Xml.XmlTextReader(New IO.StringReader("<root>" & xmlDoc & "</root>"))
reader.XmlResolver = Nothing
While reader.Read
Select Case reader.NodeType
Case Xml.XmlNodeType.Text
sb.Append(reader.Value)
Case Xml.XmlNodeType.Element
Select Case reader.Name
Case "filterpriority"
reader.Skip()
Case "returns"
sb.AppendLine()
sb.Append("Returns: ")
Case "param"
sb.AppendLine()
sb.Append(reader.GetAttribute("name") + ": ")
Case "remarks"
sb.AppendLine()
sb.Append("Remarks: ")
Case "see"
If reader.IsEmptyElement Then
sb.Append(reader.GetAttribute("cref"))
Else
reader.MoveToContent()
If reader.HasValue Then
sb.Append(reader.Value)
Else
sb.Append(reader.GetAttribute("cref"))
End If
End If
End Select
End Select
End While
End Using
Return sb.ToString
Catch ex As Exception
Return xmlDoc
End Try
End Function
Private member As ICSharpCode.SharpDevelop.Dom.IMember
Private c As ICSharpCode.SharpDevelop.Dom.IClass
Private mOverloads As Integer = 0
Private _Description As String
Public Overrides ReadOnly Property Description As String
Get
If String.IsNullOrEmpty(_Description) Then
Dim entity As ICSharpCode.SharpDevelop.Dom.IEntity
If member IsNot Nothing Then
entity = CType(member, ICSharpCode.SharpDevelop.Dom.IEntity)
Else
entity = CType(c, ICSharpCode.SharpDevelop.Dom.IEntity)
End If
_Description = GetEntityText(entity)
If mOverloads > 1 Then _Description &= " (+" & mOverloads.ToString & " overloads"
_Description &= vbCrLf & XmlDocumentationToText(entity.Documentation)
End If
Return _Description
End Get
End Property
Public Sub AddOverload()
mOverloads += 1
End Sub
Public Sub New(theMember As ICSharpCode.SharpDevelop.Dom.IMember)
MyBase.New(theMember.Name, String.Empty, GetMemberImageIndex(theMember))
Me.member = theMember
End Sub
Public Sub New(theClass As ICSharpCode.SharpDevelop.Dom.IClass)
MyBase.New(theClass.Name, String.Empty, GetClassImageIndex(theClass))
Me.c = theClass
End Sub
End Class
Private Class CodeCompletionProvider
Implements ICSharpCode.TextEditor.Gui.CompletionWindow.ICompletionDataProvider
Private ctlCode As ctlVBCodeEditor
Private Function FindExpression(txtArea As ICSharpCode.TextEditor.TextArea) As ICSharpCode.SharpDevelop.Dom.ExpressionResult
Dim finder As ICSharpCode.SharpDevelop.Dom.IExpressionFinder = New ICSharpCode.SharpDevelop.Dom.VBNet.VBExpressionFinder
Dim Result As ICSharpCode.SharpDevelop.Dom.ExpressionResult = finder.FindExpression(txtArea.Document.TextContent, txtArea.Caret.Offset)
If Result.Region.IsEmpty Then Result.Region = New ICSharpCode.SharpDevelop.Dom.DomRegion(txtArea.Caret.Line + 1, txtArea.Caret.Column + 1)
Return Result
End Function
Private Sub AddCompletionData(resultList As List(Of ICSharpCode.TextEditor.Gui.CompletionWindow.ICompletionData), completionData As ArrayList)
Dim nameDictionary As Dictionary(Of String, CodeCompletionData) = New Dictionary(Of String, CodeCompletionData)
'Add the completion data as returned by SharpDevelop.Dom to the
'list for the text editor
For Each obj As Object In completionData
If TypeOf obj Is String Then
'namespace names are returned as string
resultList.Add(New ICSharpCode.TextEditor.Gui.CompletionWindow.DefaultCompletionData(Convert.ToString(obj), "namespace " & obj.ToString, 5))
ElseIf TypeOf obj Is ICSharpCode.SharpDevelop.Dom.IClass Then
Dim cl As ICSharpCode.SharpDevelop.Dom.IClass = CType(obj, ICSharpCode.SharpDevelop.Dom.IClass)
resultList.Add(New CodeCompletionData(cl))
ElseIf TypeOf obj Is ICSharpCode.SharpDevelop.Dom.IMember Then
Dim mm As ICSharpCode.SharpDevelop.Dom.IMember = CType(obj, ICSharpCode.SharpDevelop.Dom.IMember)
If (TypeOf mm Is ICSharpCode.SharpDevelop.Dom.IMethod) AndAlso (CType(mm, ICSharpCode.SharpDevelop.Dom.IMethod).IsConstructor) Then
Continue For
End If
'Group results by name and add "(x Overloads)" to the
'description if there are multiple results with the same name.
Dim data As CodeCompletionData = Nothing
If nameDictionary.TryGetValue(mm.Name, data) Then
data.AddOverload()
Else
data = New CodeCompletionData(mm)
nameDictionary(mm.Name) = data
resultList.Add(data)
End If
Else
'Current ICSharpCode.SharpDevelop.Dom should never return anything else
Throw New NotSupportedException
End If
Next
End Sub
Public ReadOnly Property ImageList As System.Windows.Forms.ImageList Implements ICSharpCode.TextEditor.Gui.CompletionWindow.ICompletionDataProvider.ImageList
Get
Return ctlCode.imageList1
End Get
End Property
Public ReadOnly Property PreSelection As String Implements ICSharpCode.TextEditor.Gui.CompletionWindow.ICompletionDataProvider.PreSelection
Get
Return String.Empty
End Get
End Property
Public ReadOnly Property DefaultIndex As Integer Implements ICSharpCode.TextEditor.Gui.CompletionWindow.ICompletionDataProvider.DefaultIndex
Get
Return -1
End Get
End Property
Public Function ProcessKey(key As Char) As ICSharpCode.TextEditor.Gui.CompletionWindow.CompletionDataProviderKeyResult Implements ICSharpCode.TextEditor.Gui.CompletionWindow.ICompletionDataProvider.ProcessKey
If (Char.IsLetterOrDigit(key) Or key = " ") Then
Return ICSharpCode.TextEditor.Gui.CompletionWindow.CompletionDataProviderKeyResult.NormalKey
Else
Return ICSharpCode.TextEditor.Gui.CompletionWindow.CompletionDataProviderKeyResult.InsertionKey
End If
End Function
Public Function InsertAction(data As ICSharpCode.TextEditor.Gui.CompletionWindow.ICompletionData, textArea As ICSharpCode.TextEditor.TextArea, insertionOffset As Integer, key As Char) As Boolean Implements ICSharpCode.TextEditor.Gui.CompletionWindow.ICompletionDataProvider.InsertAction
textArea.Caret.Position = textArea.Document.OffsetToPosition(insertionOffset)
Return data.InsertAction(textArea, key)
End Function
Public Function GenerateCompletionData(fileName As String, textArea As ICSharpCode.TextEditor.TextArea, charTyped As Char) As ICSharpCode.TextEditor.Gui.CompletionWindow.ICompletionData() Implements ICSharpCode.TextEditor.Gui.CompletionWindow.ICompletionDataProvider.GenerateCompletionData
Dim resolver As New ICSharpCode.SharpDevelop.Dom.NRefactoryResolver.NRefactoryResolver(ctlCode.myContent.Language)
Dim rr As ICSharpCode.SharpDevelop.Dom.ResolveResult = resolver.Resolve(FindExpression(textArea), _
ctlCode.parseInfo, _
textArea.MotherTextEditorControl.Text)
Dim resultList As New List(Of ICSharpCode.TextEditor.Gui.CompletionWindow.ICompletionData)
If rr IsNot Nothing Then
Dim completionData As ArrayList = rr.GetCompletionData(ctlCode.myContent)
If completionData IsNot Nothing Then
AddCompletionData(resultList, completionData)
End If
End If
Return resultList.ToArray()
End Function
Public Sub New(myControl As ctlVBCodeEditor)
Me.ctlCode = myControl
End Sub
End Class
Private Class CodeCompletionKeyHandler
Private ctlCode As ctlVBCodeEditor
Private txtCode As ICSharpCode.TextEditor.TextEditorControl
Private codeCompletionWin As ICSharpCode.TextEditor.Gui.CompletionWindow.CodeCompletionWindow
Private Sub CloseCodeCompletionWindow(sender As Object, e As EventArgs)
If codeCompletionWin IsNot Nothing Then
RemoveHandler codeCompletionWin.FormClosed, AddressOf CloseCodeCompletionWindow
codeCompletionWin.Dispose()
codeCompletionWin = Nothing
End If
End Sub
Public Function TextAreaKeyEventHandler(key As Char) As Boolean
If codeCompletionWin IsNot Nothing Then
If codeCompletionWin.ProcessKeyEvent(key) Then
Return True
End If
End If
If key = "." Then
Dim completionDataProvider As ICSharpCode.TextEditor.Gui.CompletionWindow.ICompletionDataProvider = New CodeCompletionProvider(Me.ctlCode)
Dim theForm As System.Windows.Forms.Form = Me.ctlCode.FindForm
codeCompletionWin = ICSharpCode.TextEditor.Gui.CompletionWindow.CodeCompletionWindow.ShowCompletionWindow(theForm, Me.txtCode, ctlVBCodeEditor.DummyFileName, completionDataProvider, key)
If codeCompletionWin IsNot Nothing Then
AddHandler codeCompletionWin.FormClosed, AddressOf CloseCodeCompletionWindow
End If
End If
Return False
End Function
Public Sub New(myControl As ctlVBCodeEditor, myCodeText As ICSharpCode.TextEditor.TextEditorControl)
Me.ctlCode = myControl
Me.txtCode = myCodeText
End Sub
Public Shared Function Attach(theControl As ctlVBCodeEditor, theEditor As ICSharpCode.TextEditor.TextEditorControl) As CodeCompletionKeyHandler
Dim Result As New CodeCompletionKeyHandler(theControl, theEditor)
AddHandler theEditor.ActiveTextAreaControl.TextArea.KeyEventHandler, AddressOf Result.TextAreaKeyEventHandler
AddHandler theEditor.Disposed, AddressOf Result.CloseCodeCompletionWindow
Return Result
End Function
End Class
Private Class ToolTipProvider
Private ctlCode As ctlVBCodeEditor
Private txtCode As ICSharpCode.TextEditor.TextEditorControl
Private Function GetText(result As ICSharpCode.SharpDevelop.Dom.ResolveResult) As String
If result Is Nothing Then
Return String.Empty
End If
If TypeOf result Is ICSharpCode.SharpDevelop.Dom.MixedResolveResult Then
Return GetText(CType(result, ICSharpCode.SharpDevelop.Dom.MixedResolveResult).PrimaryResult)
End If
Dim ambience As ICSharpCode.SharpDevelop.Dom.IAmbience = New ICSharpCode.SharpDevelop.Dom.VBNet.VBNetAmbience
ambience.ConversionFlags = ICSharpCode.SharpDevelop.Dom.ConversionFlags.StandardConversionFlags Or ICSharpCode.SharpDevelop.Dom.ConversionFlags.ShowAccessibility
If TypeOf result Is ICSharpCode.SharpDevelop.Dom.MemberResolveResult Then
Return GetMemberText(ambience, CType(result, ICSharpCode.SharpDevelop.Dom.MemberResolveResult).ResolvedMember)
ElseIf TypeOf result Is ICSharpCode.SharpDevelop.Dom.LocalResolveResult Then
Dim lrr As ICSharpCode.SharpDevelop.Dom.LocalResolveResult = CType(result, ICSharpCode.SharpDevelop.Dom.LocalResolveResult)
ambience.ConversionFlags = ICSharpCode.SharpDevelop.Dom.ConversionFlags.UseFullyQualifiedTypeNames Or ICSharpCode.SharpDevelop.Dom.ConversionFlags.ShowReturnType
Dim sb As New System.Text.StringBuilder
If lrr.IsParameter Then
sb.Append("parameter ")
Else
sb.Append("local variable ")
End If
sb.Append(ambience.Convert(lrr.Field))
Return sb.ToString
ElseIf TypeOf result Is ICSharpCode.SharpDevelop.Dom.NamespaceResolveResult Then
Return "namespace " & CType(result, ICSharpCode.SharpDevelop.Dom.NamespaceResolveResult).Name
ElseIf TypeOf result Is ICSharpCode.SharpDevelop.Dom.TypeResolveResult Then
Dim c As ICSharpCode.SharpDevelop.Dom.IClass = CType(result, ICSharpCode.SharpDevelop.Dom.TypeResolveResult).ResolvedClass
If c IsNot Nothing Then
'Return ambience.Convert(result.ResolvedType)
Return GetMemberText(ambience, CType(c, ICSharpCode.SharpDevelop.Dom.IMember))
Else
Return ambience.Convert(result.ResolvedType)
End If
ElseIf TypeOf result Is ICSharpCode.SharpDevelop.Dom.MethodGroupResolveResult Then
Dim mrr As ICSharpCode.SharpDevelop.Dom.MethodGroupResolveResult = CType(result, ICSharpCode.SharpDevelop.Dom.MethodGroupResolveResult)
Dim m As ICSharpCode.SharpDevelop.Dom.IMethod = mrr.GetMethodIfSingleOverload
If m IsNot Nothing Then
Return GetMemberText(ambience, m)
Else
Return "Overload of " & ambience.Convert(mrr.ContainingType) & "." & mrr.Name
End If
Else
Return String.Empty
End If
End Function
Private Shared Function GetMemberText(ambience As ICSharpCode.SharpDevelop.Dom.IAmbience, member As ICSharpCode.SharpDevelop.Dom.IMember) As String
Dim sb As New System.Text.StringBuilder
If TypeOf member Is ICSharpCode.SharpDevelop.Dom.IField Then
sb.Append(ambience.Convert(CType(member, ICSharpCode.SharpDevelop.Dom.IField)))
ElseIf TypeOf member Is ICSharpCode.SharpDevelop.Dom.IProperty Then
sb.Append(ambience.Convert(CType(member, ICSharpCode.SharpDevelop.Dom.IProperty)))
ElseIf TypeOf member Is ICSharpCode.SharpDevelop.Dom.IEvent Then
sb.Append(ambience.Convert(CType(member, ICSharpCode.SharpDevelop.Dom.IEvent)))
ElseIf TypeOf member Is ICSharpCode.SharpDevelop.Dom.IMethod Then
sb.Append(ambience.Convert(CType(member, ICSharpCode.SharpDevelop.Dom.IMethod)))
ElseIf TypeOf member Is ICSharpCode.SharpDevelop.Dom.IClass Then
sb.Append(ambience.Convert(CType(member, ICSharpCode.SharpDevelop.Dom.IClass)))
Else
sb.Append("unknown member ")
sb.Append(member.ToString())
End If
Dim documentation As String = member.Documentation
If (documentation IsNot Nothing) AndAlso (documentation.Length > 0) Then
sb.Append(vbCrLf)
sb.Append(CodeCompletionData.XmlDocumentationToText(documentation))
End If
Return sb.ToString
End Function
Private Sub OnToolTipRequest(sender As Object, e As ICSharpCode.TextEditor.ToolTipRequestEventArgs)
If e.InDocument And (Not e.ToolTipShown) Then
Dim expFinder As ICSharpCode.SharpDevelop.Dom.IExpressionFinder = New ICSharpCode.SharpDevelop.Dom.VBNet.VBExpressionFinder
Dim expResult As ICSharpCode.SharpDevelop.Dom.ExpressionResult = expFinder.FindFullExpression(txtCode.Text, txtCode.Document.PositionToOffset(e.LogicalPosition))
If expResult.Region.IsEmpty Then
expResult.Region = New ICSharpCode.SharpDevelop.Dom.DomRegion(e.LogicalPosition.Line + 1, e.LogicalPosition.Column + 1)
End If
Dim txtArea As ICSharpCode.TextEditor.TextArea = txtCode.ActiveTextAreaControl.TextArea
Dim resolver As New ICSharpCode.SharpDevelop.Dom.NRefactoryResolver.NRefactoryResolver(ctlCode.myContent.Language)
Dim rr As ICSharpCode.SharpDevelop.Dom.ResolveResult = resolver.Resolve(expResult, ctlCode.parseInfo, txtArea.MotherTextEditorControl.Text)
Dim toolTipText As String = GetText(rr)
If Not String.IsNullOrEmpty(toolTipText) Then
e.ShowToolTip(toolTipText)
End If
End If
End Sub
Public Sub New(myControl As ctlVBCodeEditor, myCodeText As ICSharpCode.TextEditor.TextEditorControl)
Me.ctlCode = myControl
Me.txtCode = myCodeText
End Sub
Public Shared Sub Attach(theControl As ctlVBCodeEditor, theEditor As ICSharpCode.TextEditor.TextEditorControl)
Dim tp As New ToolTipProvider(theControl, theEditor)
AddHandler theEditor.ActiveTextAreaControl.TextArea.ToolTipRequest, AddressOf tp.OnToolTipRequest
End Sub
End Class
Private Const DummyFileName As String = "dummy.vb"
Private pcREG As ICSharpCode.SharpDevelop.Dom.ProjectContentRegistry
Private myContent As ICSharpCode.SharpDevelop.Dom.DefaultProjectContent
Private parseInfo As ICSharpCode.SharpDevelop.Dom.ParseInformation
Private lastCompUnit As ICSharpCode.SharpDevelop.Dom.ICompilationUnit
Private parserThread As Threading.Thread
Private CurrentLanguageProperties As ICSharpCode.SharpDevelop.Dom.LanguageProperties
Private Sub InitializeControl()
parseInfo = New ICSharpCode.SharpDevelop.Dom.ParseInformation
CurrentLanguageProperties = ICSharpCode.SharpDevelop.Dom.LanguageProperties.VBNet
txtCode.SetHighlighting("VBNET")
HostCallbackImplementation.Register(Me)
CodeCompletionKeyHandler.Attach(Me, txtCode)
ToolTipProvider.Attach(Me, txtCode)
pcREG = New ICSharpCode.SharpDevelop.Dom.ProjectContentRegistry
'pcREG.ActivatePersistence(IO.Path.Combine(My.Computer.FileSystem.SpecialDirectories.Temp, "test"))
myContent = New ICSharpCode.SharpDevelop.Dom.DefaultProjectContent()
myContent.Language = CurrentLanguageProperties
End Sub
Private Function ConvertCompilationUnit(cu As ICSharpCode.NRefactory.Ast.CompilationUnit) As ICSharpCode.SharpDevelop.Dom.ICompilationUnit
Dim converter As New ICSharpCode.SharpDevelop.Dom.NRefactoryResolver.NRefactoryASTConvertVisitor(myContent)
cu.AcceptVisitor(converter, Nothing)
Return converter.Cu
End Function
Private Sub ParseStep()
Dim code As String = String.Empty
Invoke(New MethodInvoker(Sub() code = txtCode.Text))
Dim txtReader As IO.TextReader = New IO.StringReader(code)
Dim newCompUnit As ICSharpCode.SharpDevelop.Dom.ICompilationUnit
Dim supportedLanguage As ICSharpCode.NRefactory.SupportedLanguage = ICSharpCode.NRefactory.SupportedLanguage.VBNet
Using p As ICSharpCode.NRefactory.IParser = ICSharpCode.NRefactory.ParserFactory.CreateParser(supportedLanguage, txtReader)
'we only need to parse types and method definitions, no method bodies
p.ParseMethodBodies = False
p.Parse()
newCompUnit = ConvertCompilationUnit(p.CompilationUnit)
End Using
'Remove information from lastCompilationUnit and add from newCompilationUnit.
myContent.UpdateCompilationUnit(lastCompUnit, newCompUnit, DummyFileName)
lastCompUnit = newCompUnit
parseInfo.SetCompilationUnit(newCompUnit)
End Sub
Private Sub BackgroundParser()
BeginInvoke(New MethodInvoker(Sub() lblInfo.Text = "Loading Visual Basic..."))
myContent.AddReferencedContent(pcREG.Mscorlib)
'do one initial parser step to enable code-completion while other references are loading
ParseStep()
Dim refAssemblies As String() = {"System", _
"System.Data", _
"System.Drawing", _
"System.Xml", _
"System.Windows.Forms", _
"Microsoft.VisualBasic"}
For Each asmName As String In refAssemblies
Dim asmNameCopy As String = asmName
BeginInvoke(New MethodInvoker(Sub() lblInfo.Text = "Loading " & asmNameCopy & "..."))
Dim refContent As ICSharpCode.SharpDevelop.Dom.IProjectContent = pcREG.GetProjectContentForReference(asmName, asmName)
myContent.AddReferencedContent(refContent)
If TypeOf refContent Is ICSharpCode.SharpDevelop.Dom.ReflectionProjectContent Then
CType(refContent, ICSharpCode.SharpDevelop.Dom.ReflectionProjectContent).InitializeReferences()
End If
Next
myContent.DefaultImports = New ICSharpCode.SharpDevelop.Dom.DefaultUsing(myContent)
myContent.DefaultImports.Usings.Add("System")
myContent.DefaultImports.Usings.Add("System.Text")
myContent.DefaultImports.Usings.Add("Microsoft.VisualBasic")
BeginInvoke(New MethodInvoker(Sub() lblInfo.Text = "Ready..."))
'Parse the current file every 2 seconds
While Not IsDisposed
ParseStep()
Threading.Thread.Sleep(2000)
End While
End Sub
Protected Overrides Sub OnLoad(e As System.EventArgs)
MyBase.OnLoad(e)
If Not DesignMode Then
parserThread = New Threading.Thread(AddressOf BackgroundParser)
parserThread.IsBackground = True
parserThread.Start()
End If
End Sub
Public Sub New()
' This call is required by the designer.
InitializeComponent()
' Add any initialization after the InitializeComponent() call.
If Not DesignMode Then
InitializeControl()
End If
End Sub
End Class