public static string ExpectIdentifier(this ParserContext context, string unexpectedErrorMessageFormat, bool allowPrecedingWhiteSpace, SourceLocation?errorLocation)
{
using (context.StartTemporaryBuffer()) {
if (allowPrecedingWhiteSpace)
{
context.AcceptWhiteSpace(includeNewLines: true);
}
if (!ParserHelpers.IsIdentifierStart(context.CurrentCharacter))
{
if (context.EndOfFile)
{
context.OnError(errorLocation ?? context.CurrentLocation, unexpectedErrorMessageFormat, RazorResources.ErrorComponent_EndOfFile);
}
else if (Char.IsWhiteSpace(context.CurrentCharacter))
{
context.OnError(errorLocation ?? context.CurrentLocation, unexpectedErrorMessageFormat, RazorResources.ErrorComponent_Whitespace);
}
else
{
context.OnError(errorLocation ?? context.CurrentLocation,
unexpectedErrorMessageFormat,
String.Format(CultureInfo.CurrentCulture,
RazorResources.ErrorComponent_Character,
context.CurrentCharacter));
}
return(null);
}
else
{
context.AcceptTemporaryBuffer();
}
}
return(context.AcceptIdentifier());
}
public static bool Expect(this ParserContext context, string expected, bool outputError, string errorMessage, bool caseSensitive, SourceLocation?errorLocation)
{
SourceLocation?errLoc;
char? errorChar;
if (!Accept(context, expected, caseSensitive, out errLoc, out errorChar))
{
if (outputError)
{
context.OnError(errorLocation ?? errLoc ?? context.CurrentLocation, errorMessage ?? RazorResources.ParseError_Expected_X, expected);
}
return(false);
}
return(true);
}
