private VirtualTreePoint GetStartPoint(SourceText text, BaseMethodDeclarationSyntax node, EnvDTE.vsCMPart part)
{
int startPosition;
switch (part)
{
case EnvDTE.vsCMPart.vsCMPartName:
case EnvDTE.vsCMPart.vsCMPartAttributes:
case EnvDTE.vsCMPart.vsCMPartWhole:
case EnvDTE.vsCMPart.vsCMPartBodyWithDelimiter:
case EnvDTE.vsCMPart.vsCMPartHeaderWithAttributes:
throw Exceptions.ThrowENotImpl();
case EnvDTE.vsCMPart.vsCMPartHeader:
startPosition = node.GetFirstTokenAfterAttributes().SpanStart;
break;
case EnvDTE.vsCMPart.vsCMPartAttributesWithDelimiter:
if (node.AttributeLists.Count == 0)
{
throw Exceptions.ThrowEFail();
}
goto case EnvDTE.vsCMPart.vsCMPartWholeWithAttributes;
case EnvDTE.vsCMPart.vsCMPartWholeWithAttributes:
startPosition = node.GetFirstToken().SpanStart;
break;
case EnvDTE.vsCMPart.vsCMPartNavigate:
if (node.Body != null && !node.Body.OpenBraceToken.IsMissing)
{
var line = text.Lines.GetLineFromPosition(node.SpanStart);
var indentation = line.GetColumnOfFirstNonWhitespaceCharacterOrEndOfLine(GetTabSize(text));
return GetBodyStartPoint(text, node.Body.OpenBraceToken, node.Body.CloseBraceToken, indentation);
}
else
{
switch (node.Kind())
{
case SyntaxKind.MethodDeclaration:
startPosition = ((MethodDeclarationSyntax)node).Identifier.SpanStart;
break;
case SyntaxKind.ConstructorDeclaration:
startPosition = ((ConstructorDeclarationSyntax)node).Identifier.SpanStart;
break;
case SyntaxKind.DestructorDeclaration:
startPosition = ((DestructorDeclarationSyntax)node).Identifier.SpanStart;
break;
case SyntaxKind.ConversionOperatorDeclaration:
startPosition = ((ConversionOperatorDeclarationSyntax)node).ImplicitOrExplicitKeyword.SpanStart;
break;
case SyntaxKind.OperatorDeclaration:
startPosition = ((OperatorDeclarationSyntax)node).OperatorToken.SpanStart;
break;
default:
startPosition = node.GetFirstTokenAfterAttributes().SpanStart;
break;
}
}
break;
case EnvDTE.vsCMPart.vsCMPartBody:
if (node.Body == null || node.Body.OpenBraceToken.IsMissing || node.Body.CloseBraceToken.IsMissing)
{
throw Exceptions.ThrowEFail();
}
return GetBodyStartPoint(text, node.Body.OpenBraceToken);
default:
throw Exceptions.ThrowEInvalidArg();
}
return new VirtualTreePoint(node.SyntaxTree, text, startPosition);
}
private SyntaxToken GetFirstTokenAfterAttributes(BaseMethodDeclarationSyntax node)
{
return node.AttributeLists.Count != 0
? node.AttributeLists.Last().GetLastToken().GetNextToken()
: node.GetFirstToken();
}
