protected InternalSyntaxToken VisitErrorNode(IErrorNode node)
{
int type = node.Symbol.Type;
SyntaxKind kind = type.FromAntlr4(_syntaxFacts.SyntaxKindType);
InternalSyntaxToken result = this.factory.MissingToken(kind);
return(this.AddDiagnostic(result, node.Symbol.TokenIndex));
}
private InternalSyntaxToken AddDiagnostic(InternalSyntaxToken token, int tokenIndex)
{
string errorMessage;
if (this.Antlr4Errors.TryGetValue(tokenIndex, out errorMessage))
{
SyntaxDiagnosticInfo diagnosticInfo = this.MakeError(token.GetLeadingTriviaWidth(), token.Width, Antlr4RoslynErrorCode.ERR_SyntaxError, errorMessage);
return((InternalSyntaxToken)token.WithDiagnostics(new DiagnosticInfo[] { diagnosticInfo }));
}
return(token);
}
protected GreenNode VisitTerminal(IToken token, SyntaxKind expectedKind, ref IToken previousTokenOrTrivia)
{
if (token == null)
{
if ((object)expectedKind == null)
{
return(null);
}
else
{
var missing = this.factory.MissingToken(expectedKind);
return(missing); // TODO:MetaDslx is adding diagnostics necessary? this.AddDiagnostic(result, token.TokenIndex);
}
}
InternalSyntaxToken result = null;
bool addTrivia = true;
bool updatePreviousTokenOrTrivia = true;
if (token.Type >= 0)
{
int type = token.Type;
SyntaxKind kind = type.FromAntlr4(_syntaxFacts.SyntaxKindType);
Debug.Assert((object)expectedKind == null || kind == expectedKind);
if (token.StartIndex < 0 || token.StopIndex < token.StartIndex)
{
result = this.factory.MissingToken(kind);
return(this.AddDiagnostic(result, token.TokenIndex));
}
if (this.Language.SyntaxFacts.IsFixedToken(kind))
{
result = this.factory.Token(kind);
}
else
{
string text = token.Text;
GreenNode leadingTrivia = this.GetLeadingTrivia(token, previousTokenOrTrivia);
previousTokenOrTrivia = token;
GreenNode trailingTrivia = this.GetTrailingTrivia(token, ref previousTokenOrTrivia);
var value = this.Language.SyntaxFacts.ExtractValue(text);
result = this.factory.Token(leadingTrivia, kind, text, value, trailingTrivia);
addTrivia = false;
updatePreviousTokenOrTrivia = false;
}
}
else
{
result = this.factory.EndOfFile;
}
if (result == null)
{
return(null);
}
if (addTrivia)
{
GreenNode leadingTrivia = this.GetLeadingTrivia(token, previousTokenOrTrivia);
if (leadingTrivia != null)
{
result = (InternalSyntaxToken)result.WithLeadingTrivia(leadingTrivia);
}
previousTokenOrTrivia = token;
GreenNode trailingTrivia = this.GetTrailingTrivia(token, ref previousTokenOrTrivia);
if (trailingTrivia != null)
{
result = (InternalSyntaxToken)result.WithTrailingTrivia(trailingTrivia);
}
updatePreviousTokenOrTrivia = false;
}
if (updatePreviousTokenOrTrivia)
{
previousTokenOrTrivia = token;
}
return(this.AddDiagnostic(result, token.TokenIndex));
}
public virtual TResult VisitToken(InternalSyntaxToken token)
{
return(this.DefaultVisit(token));
}