private LineSpanDirectiveTriviaSyntax ParseLineSpanDirective(SyntaxToken hash, SyntaxToken lineKeyword, bool isActive)
{
Debug.Assert(CurrentToken.Kind == SyntaxKind.OpenParenToken);
bool reportError = isActive;
var start = ParseLineDirectivePosition(ref reportError, out int startLine, out int startCharacter);
if (noTriviaBetween(lineKeyword, start.GetFirstToken()))
{
start = this.AddError(start, ErrorCode.ERR_LineSpanDirectiveRequiresSpace);
}
var minus = EatToken(SyntaxKind.MinusToken, reportError: reportError);
if (minus.IsMissing)
{
reportError = false;
}
var end = ParseLineDirectivePosition(ref reportError, out int endLine, out int endCharacter);
if (reportError &&
(endLine < startLine || (endLine == startLine && endCharacter < startCharacter)))
{
end = this.AddError(end, ErrorCode.ERR_LineSpanDirectiveEndLessThanStart);
}
var characterOffset = (CurrentToken.Kind == SyntaxKind.NumericLiteralToken) ?
ParseLineDirectiveNumericLiteral(ref reportError, minValue: 1, maxValue: MaxCharacterValue, out _) :
null;
if (noTriviaBetween(end.GetLastToken(), characterOffset))
{
characterOffset = this.AddError(characterOffset, ErrorCode.ERR_LineSpanDirectiveRequiresSpace);
}
var file = EatToken(SyntaxKind.StringLiteralToken, ErrorCode.ERR_MissingPPFile, reportError: reportError);
if (file.IsMissing)
{
reportError = false;
}
if (noTriviaBetween(characterOffset ?? end.GetLastToken(), file))
{
file = this.AddError(file, ErrorCode.ERR_LineSpanDirectiveRequiresSpace);
}
var endOfDirective = this.ParseEndOfDirective(ignoreErrors: !reportError);
return(SyntaxFactory.LineSpanDirectiveTrivia(hash, lineKeyword, start, minus, end, characterOffset, file, endOfDirective, isActive));
private LineSpanDirectiveTriviaSyntax ParseLineSpanDirective(SyntaxToken hash, SyntaxToken lineKeyword, bool isActive)
{
Debug.Assert(CurrentToken.Kind == SyntaxKind.OpenParenToken);
if (isActive)
{
lineKeyword = CheckFeatureAvailability(lineKeyword, MessageID.IDS_FeatureLineSpanDirective);
}
bool reportError = isActive;
var start = ParseLineDirectivePosition(ref reportError, out int startLine, out int startCharacter);
var minus = EatToken(SyntaxKind.MinusToken, reportError: reportError);
if (minus.IsMissing)
{
reportError = false;
}
var end = ParseLineDirectivePosition(ref reportError, out int endLine, out int endCharacter);
if (reportError &&
(endLine < startLine || (endLine == startLine && endCharacter < startCharacter)))
{
end = this.AddError(end, ErrorCode.ERR_LineSpanDirectiveEndLessThanStart);
}
var characterOffset = (CurrentToken.Kind == SyntaxKind.NumericLiteralToken) ?
ParseLineDirectiveNumericLiteral(ref reportError, minValue: 1, maxValue: MaxCharacterValue, out _) :
null;
var file = EatToken(SyntaxKind.StringLiteralToken, ErrorCode.ERR_MissingPPFile, reportError: reportError);
if (file.IsMissing)
{
reportError = false;
}
var endOfDirective = this.ParseEndOfDirective(ignoreErrors: !reportError);
return(SyntaxFactory.LineSpanDirectiveTrivia(hash, lineKeyword, start, minus, end, characterOffset, file, endOfDirective, isActive));
}