public void Calculates_LineAndCharacter_Correctly(int position, int expectedLine, int expectedCharacter)
{
var input = "One\nTwo\r\nThree";
var sourceText = new SourceText(input);
var lineAndCharacter = sourceText.GetLineAndCharacterPosition(position);
Assert.That(lineAndCharacter.Line, Is.EqualTo(expectedLine));
Assert.That(lineAndCharacter.Character, Is.EqualTo(expectedCharacter));
}
private static void PrintErrors(SourceText text, IEnumerable <Diagnostic> diagnostics)
{
foreach (var diagnostic in diagnostics)
{
var startPosition = text.GetLineAndCharacterPosition(diagnostic.Span.Start);
var line = text.Lines[startPosition.Line];
var linePrefix = text.Substring(line.Start, startPosition.Character);
var lineProblem = text.Substring(diagnostic.Span.Start, diagnostic.Span.Length);
var lineSuffix = text.Substring(diagnostic.Span.End, line.Length - diagnostic.Span.End);
Console.WriteLine();
WriteLineToConsole(ConsoleColor.Red, $"Line: {startPosition.Line + 1} Char: {startPosition.Character + 1} {diagnostic.Message}");
Console.Write(" ");
Console.Write(linePrefix);
WriteToConsole(ConsoleColor.DarkRed, lineProblem);
Console.WriteLine(lineSuffix);
}
Console.WriteLine();
}