public string ShowPosition(LineChr lineChr)
{
var pos = GetPosition(lineChr);
var lineText = ExtractLine(pos);
return(ShowPositionOnLine(lineText, lineChr.Chr));
}
public List <string> GetCompletionKeywordsAtPosition(LineChr lineChr)
{
var analysisResult = GetAnalysis(lineChr);
if (analysisResult.IsInsideComment || analysisResult.IsAfterAnyErrorLine(lineChr) || !analysisResult.SuccessfulRun)
{
return(new List <string>());
}
var typingToken = analysisResult.GetTokenBeingTypedAtCursor(lineChr);
if (analysisResult.KeywordToken != null && analysisResult.KeywordToken != typingToken)
{
var fullAnalysis = GetAnalysis();
return(fullAnalysis.NonKeywordWords);
}
var lastParent = analysisResult.ConceptContext.LastOrDefault();
var validConcepts = lastParent == null
? rhetosProjectContext.DslSyntax.ConceptTypes.ToList()
: conceptQueries.ValidConceptsForParent(lastParent.Concept);
var keywords = validConcepts
.Select(concept => concept.Keyword)
.Where(keyword => keyword != null)
.Distinct()
.OrderBy(keyword => keyword)
.ToList();
return(keywords);
}
// Due to unusual way the tokenizer works, if we capture errors during initial call to GetToken(),
// valid tokens will be returned without error in subsequent calls
private (ITokenizer tokenizer, List <CodeAnalysisError> capturedErrors) CreateTokenizerWithCapturedErrors()
{
var capturedErrors = new List <CodeAnalysisError>();
try
{
var safeTokenizer = new Tokenizer(textDocument, new FilesUtility(rhetosLogProvider), new Lazy <DslSyntax>(() => rhetosProjectContext.DslSyntax));
var tokenizerResult = safeTokenizer.GetTokens();
if (tokenizerResult.SyntaxError != null)
{
var beginLineChr = new LineChr(tokenizerResult.SyntaxError.FilePosition.BeginLine - 1, tokenizerResult.SyntaxError.FilePosition.BeginColumn - 1);
var endLineChr = new LineChr(tokenizerResult.SyntaxError.FilePosition.EndLine - 1, tokenizerResult.SyntaxError.FilePosition.EndColumn - 1);
capturedErrors.Add(new CodeAnalysisError()
{
BeginLineChr = beginLineChr, EndLineChr = endLineChr, Code = tokenizerResult.SyntaxError.ErrorCode, Message = tokenizerResult.SyntaxError.Message
});
}
return(new TokenizerExplicitTokens(tokenizerResult.Tokens), capturedErrors);
}
catch (Exception e)
{
capturedErrors.Add(new CodeAnalysisError()
{
Message = e.Message
});
}
return(new TokenizerExplicitTokens(new List <Token>()), capturedErrors);
}
public Token GetTokenLeftOfPosition(LineChr lineChr)
{
if (lineChr.Chr > 0)
{
lineChr = new LineChr(lineChr.Line, lineChr.Chr - 1);
}
return(GetTokenAtPosition(lineChr));
}
public Token GetTokenBeingTypedAtCursor(LineChr lineChr)
{
if (GetTokenAtPosition(lineChr) != null)
{
return(null);
}
return(GetTokenLeftOfPosition(lineChr));
}
private CodeAnalysisError CreateAnalysisError(DslSyntaxException e)
{
var beginLineChr = new LineChr(e.FilePosition.BeginLine - 1, e.FilePosition.BeginColumn - 1);
var endLineChr = new LineChr(e.FilePosition.EndLine - 1, e.FilePosition.EndColumn - 1);
return(new CodeAnalysisError()
{
BeginLineChr = beginLineChr, EndLineChr = endLineChr, Code = e.ErrorCode, Message = e.Message
});
}
public Token GetTokenAtPosition(LineChr lineChr)
{
var position = TextDocument.GetPosition(lineChr);
foreach (var token in Tokens)
{
if (token.Type != TokenType.EndOfFile && position >= token.PositionInDslScript && position < token.PositionEndInDslScript)
{
return(token);
}
}
return(null);
}
public string GetTruncatedAtNextEndOfLine(LineChr lineChr)
{
if (Text.Length == 0)
{
return("");
}
var pos = GetPosition(lineChr);
while (pos < Text.Length)
{
if (Text[pos++] == '\n')
{
break;
}
}
return(Text.Substring(0, pos));
}
private int GetActiveParameterForValidConcept(ConceptType conceptType)
{
var activeParameter = 0;
// we have parsed some members successfully for this concept type
if (LastTokenParsed.ContainsKey(conceptType))
{
activeParameter = ConceptTypeTools.IndexOfParameter(conceptType, LastMemberReadAttempt[conceptType]);
// if we have just typed a keyword OR have stopped typing a parameter (by pressing space, etc.), we need to advance to next parameter
// keyword scenario is possible in nested concepts, where we already have valid parameters and are just typing a keyword
var lineChr = new LineChr(Line, Chr);
var atLastParsed = GetTokenAtPosition(lineChr) == LastTokenParsed[conceptType] || GetTokenLeftOfPosition(lineChr) == LastTokenParsed[conceptType];
var atKeyword = string.Equals(conceptType.Keyword, LastTokenParsed[conceptType].Value, StringComparison.InvariantCultureIgnoreCase);
if (atKeyword || !atLastParsed)
{
activeParameter++;
}
}
return(activeParameter);
}
public int GetPosition(LineChr lineChr)
{
return(GetPosition(lineChr.Line, lineChr.Chr));
}
public bool IsAfterAnyErrorLine(LineChr lineChr)
{
return(AllErrors.Where(a => a.Severity == CodeAnalysisError.ErrorSeverity.Error).Any(error => lineChr.Line > error.BeginLineChr.Line));
}
public bool IsAfterAnyErrorPosition(LineChr lineChr)
{
var pos = TextDocument.GetPosition(lineChr);
return(AllErrors.Any(error => pos > TextDocument.GetPosition(error.BeginLineChr)));
}
public (List <RhetosSignature> signatures, int?activeSignature, int?activeParameter) GetSignatureHelpAtPosition(LineChr lineChr)
{
var analysis = GetAnalysis(lineChr);
if (analysis.KeywordToken == null || analysis.IsAfterAnyErrorLine(lineChr))
{
return(null, null, null);
}
var signaturesWithDocumentation = conceptQueries.GetSignaturesWithDocumentation(analysis.KeywordToken.Value);
var validConcepts = analysis.GetValidConceptsWithActiveParameter();
if (!validConcepts.Any())
{
return(signaturesWithDocumentation, null, null);
}
var sortedConcepts = validConcepts
.Select(valid =>
(
valid.conceptType,
valid.activeParamater,
parameterCount: ConceptTypeTools.GetParameters(valid.conceptType).Count,
documentation: signaturesWithDocumentation.Single(sig => sig.ConceptType == valid.conceptType)
))
.OrderBy(valid => valid.activeParamater >= valid.parameterCount)
.ThenBy(valid => valid.parameterCount)
.ThenBy(valid => valid.conceptType.TypeName)
.ToList();
var activeParameter = sortedConcepts.First().activeParamater;
return(sortedConcepts.Select(sorted => sorted.documentation).ToList(), 0, activeParameter);
}
public (string description, LineChr startPosition, LineChr endPosition) GetHoverDescriptionAtPosition(LineChr lineChr)
{
var analysis = GetAnalysis(lineChr);
if (analysis.KeywordToken == null || analysis.IsAfterAnyErrorLine(lineChr))
{
return(null, LineChr.Zero, LineChr.Zero);
}
var description = conceptQueries.GetFullDescription(analysis.KeywordToken.Value);
if (string.IsNullOrEmpty(description))
{
description = $"No documentation found for '{analysis.KeywordToken.Value}'.";
}
var startPosition = TextDocument.GetLineChr(analysis.KeywordToken.PositionInDslScript);
var endPosition = lineChr;
if (analysis.NextKeywordToken != null)
{
endPosition = TextDocument.GetLineChr(analysis.NextKeywordToken.PositionInDslScript - 1);
}
return(description, startPosition, endPosition);
}