public override ISpecificCodeCompletionContext GetCompletionContext(CodeCompletionContext context)
{
if (context.SelectedRange.TextRange.Length > 0)
{
return(null);
}
var fsFile = (IFSharpFile)context.File;
var parseTree = fsFile.ParseResults?.Value.ParseTree?.Value;
if (parseTree == null)
{
return(null);
}
var caretTreeOffset = context.CaretDocumentOffset;
var caretOffset = caretTreeOffset.Offset;
var token = fsFile.FindTokenAt(caretTreeOffset);
var tokenType = token?.GetTokenType();
var tokenBefore = fsFile.FindTokenAt(caretTreeOffset - 1);
var tokenBeforeType = tokenBefore?.GetTokenType();
if (tokenType == FSharpTokenType.COLON_COLON || tokenBeforeType == FSharpTokenType.COLON_COLON)
{
return(null);
}
if (tokenBeforeType == FSharpTokenType.LINE_COMMENT ||
tokenBeforeType == FSharpTokenType.DEAD_CODE || tokenType == FSharpTokenType.DEAD_CODE ||
tokenBeforeType != null && (token == tokenBefore || token == null) &&
(tokenBeforeType.IsComment || tokenBeforeType.IsStringLiteral ||
tokenBeforeType.IsConstantLiteral) ||
tokenBefore.GetDocumentEndOffset() < caretTreeOffset || token.GetDocumentEndOffset() < caretTreeOffset)
{
return(null);
}
var document = context.Document;
var completedRangeStartOffset = CanBeIdentifierPart(tokenBeforeType)
? tokenBefore.GetDocumentStartOffset().Offset
: caretOffset;
var completedRange = new DocumentRange(document, new TextRange(completedRangeStartOffset, caretOffset));
var defaultRanges = GetTextLookupRanges(context, completedRange);
var ranges = CanBeIdentifierPart(token?.GetTokenType())
? defaultRanges.WithReplaceRange(new DocumentRange(document, new TextRange(completedRangeStartOffset,
Math.Max(token.GetDocumentEndOffset().Offset, caretOffset))))
: defaultRanges;
var coords = document.GetCoordsByOffset(caretOffset);
var lineText = document.GetLineText(coords.Line);
var partialName = QuickParse.GetPartialLongNameEx(lineText, (int)coords.Column - 1);
var fsCompletionContext = UntypedParseImpl.TryGetCompletionContext(coords.ToPos(), parseTree, lineText);
return(new FSharpCodeCompletionContext(context, fsCompletionContext, ranges, coords, partialName, tokenBefore,
token, lineText));
}
public override ISpecificCodeCompletionContext GetCompletionContext(CodeCompletionContext context)
{
var fsFile = (IFSharpFile)context.File;
var parseResults = fsFile.ParseResults;
var caretTreeOffset = context.CaretTreeOffset;
var caretOffset = caretTreeOffset.Offset;
var token = fsFile.FindTokenAt(caretTreeOffset);
var tokenBefore = fsFile.FindTokenAt(caretTreeOffset - 1);
var tokenBeforeType = tokenBefore?.GetTokenType();
var parseTree = parseResults?.Value.ParseTree?.Value;
if (parseTree == null ||
tokenBeforeType == FSharpTokenType.LINE_COMMENT ||
tokenBeforeType == FSharpTokenType.DEAD_CODE || token?.GetTokenType() == FSharpTokenType.DEAD_CODE ||
token == tokenBefore && tokenBeforeType != null &&
(tokenBeforeType.IsComment || tokenBeforeType.IsStringLiteral ||
tokenBeforeType.IsConstantLiteral) ||
context.SelectedRange.TextRange.Length > 0 ||
tokenBefore.GetTreeEndOffset() < caretTreeOffset || token.GetTreeEndOffset() < caretTreeOffset)
{
var selectedRange = context.SelectedRange;
return(new FSharpCodeCompletionContext(context, CompletionContext.Invalid,
new TextLookupRanges(selectedRange, selectedRange), DocumentCoords.Empty, null));
}
var document = context.Document;
var completedRangeStartOffset =
tokenBeforeType != null && (tokenBeforeType == FSharpTokenType.IDENTIFIER || tokenBeforeType.IsKeyword)
? tokenBefore.GetTreeStartOffset().Offset
: caretOffset;
var completedRange = new DocumentRange(document, new TextRange(completedRangeStartOffset, caretOffset));
var defaultRanges = GetTextLookupRanges(context, completedRange);
var ranges = ShouldReplace(token)
? defaultRanges.WithReplaceRange(new DocumentRange(document, new TextRange(completedRangeStartOffset,
Math.Max(token.GetTreeEndOffset().Offset, caretOffset))))
: defaultRanges;
var coords = document.GetCoordsByOffset(caretOffset);
var lineText = document.GetLineText(coords.Line);
var partialName = QuickParse.GetPartialLongNameEx(lineText, (int)coords.Column - 1);
var fsCompletionContext = UntypedParseImpl.TryGetCompletionContext(coords.GetPos(), parseTree, lineText);
return(new FSharpCodeCompletionContext(context, fsCompletionContext, ranges, coords, partialName, tokenBefore,
token, lineText));
}
