// routines used for a first round of checking for syntactic errors related to how statements can be formatted (e.g. a non-empty statement ending in '}' is certainly incorrect)
/// <summary>
/// For any fragment where the code only consistes of whitespace,
/// adds a warning to the returned diagnostics if such a fragment terminates in a semicolon,
/// adds an error to the returned diagnostics if it ends in and opening bracket.
/// Throws an ArgumentNullException if the given diagnostics or fragments are null.
/// </summary>
private static IEnumerable <Diagnostic> CheckForEmptyFragments(this IEnumerable <CodeFragment> fragments, string filename)
{
if (fragments == null)
{
throw new ArgumentNullException(nameof(fragments));
}
// opting to not complain about semicolons not following code anywhere in the file (i.e. on any scope)
var diagnostics = fragments.Where(snippet => snippet.Text.Length == 0 && snippet.FollowedBy == ';')
.Select(snippet => Warnings.EmptyStatementWarning(filename, snippet.GetRange().End))
.Concat(fragments.Where(snippet => snippet.Text.Length == 0 && snippet.FollowedBy == '{')
.Select(snippet => Errors.MisplacedOpeningBracketError(filename, snippet.GetRange().End)));
return(diagnostics.ToList()); // in case fragments change
}
private static string Code(QsCompilerDiagnostic msg)
{
if (msg.Diagnostic.IsError)
{
return(Errors.Error(msg.Code));
}
else if (msg.Diagnostic.IsWarning)
{
return(Warnings.Warning(msg.Code));
}
else if (msg.Diagnostic.IsInformation)
{
return(Informations.Information(msg.Code));
}
else
{
throw new NotImplementedException("Hints are currently not supported - they need to be added to Diagnostics.fs in the QsLanguageProcessor, and here.");
}
}
