public CompilerError(string message, SourceRange sourceRange) : base(message)
{
Range = sourceRange;
}
public CompilerError(string message, SourceLocation location) : base(message)
{
Range = new SourceRange(location, null);
}
/// <summary>
/// Issue a fatal error message
/// </summary>
public void Fatal(string message, SourceRange range = null)
{
Consume(SeverityEnum.Fatal, range, message, null);
}
private void Consume(SeverityEnum severity, SourceRange range, string message, string stackTrace)
{
var locStart = range?.Start;
var locStartStr = locStart != null?IO.Normalize(locStart.ToString()) + " " : "";
// Log the message
switch (severity)
{
case SeverityEnum.Warning:
Logger.Warn($"{locStartStr}{message}");
break;
case SeverityEnum.Error:
Logger.Error($"{locStartStr}{message}");
break;
case SeverityEnum.Fatal:
Logger.Fatal($"{locStartStr}{message}");
break;
}
if (!string.IsNullOrEmpty(stackTrace))
{
Logger.Debug(stackTrace);
}
// Print to console
if (UseColors)
{
Console.ForegroundColor = ConsoleColor.White;
Stream.Write($"{GetLocationOrExecutable(locStart)} ");
switch (severity)
{
case SeverityEnum.Warning:
Console.ForegroundColor = ConsoleColor.Magenta;
break;
case SeverityEnum.Error:
Console.ForegroundColor = ConsoleColor.Red;
break;
case SeverityEnum.Fatal:
Console.ForegroundColor = ConsoleColor.Red;
break;
}
Stream.Write(GetNameOfSeverity(severity) + ": ");
Console.ForegroundColor = ConsoleColor.White;
Stream.WriteLine(message);
Console.ResetColor();
}
else
{
Stream.WriteLine($"{GetLocationOrExecutable(locStart)} {GetNameOfSeverity(severity)}: {message}");
}
// Render the code location
if (locStart != null && locStart.Row != -1 && locStart.Column != -1 && File.Exists(locStart.File))
{
var lines = File.ReadAllLines(locStart.File);
if (locStart.Row - 1 < lines.Count())
{
var width = Console.WindowWidth - 1;
var line = lines[locStart.Row - 1];
var size = line.Count();
int cursor;
// Print line
if (size > width)
{
var col = locStart.Column;
// col
// |
// ~~~~~~~~~~v~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ size
// ----------------------- width
//
if (col < (width - 4))
{
// Chop right
var left = line.Substring(0, col);
var right = line.Substring(col, width - col - 4) + " ...";
Stream.WriteLine(left + right);
cursor = col;
}
// col
// |
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~v~~~~~~~~~~ size
// ----------------------- width
//
else if ((size - col) < (width - 4))
{
// Chop left
var left = "... " + line.Substring(size - width, col - 4);
var right = line.Substring(col);
Stream.WriteLine(left + right);
cursor = size - width + col;
}
// col
// |
// ~~~~~~~~~~~~~~~~~~~~~~~~v~~~~~~~~~~~~~~~~~~ size
// ----------------------- width
//
else
{
// Chop both ends
var halfWidth = width / 2;
var left = "... " + line.Substring(col - halfWidth + 4, halfWidth - 4);
var right = line.Substring(col, halfWidth - 4) + " ...";
Stream.WriteLine(left + right);
cursor = halfWidth;
}
}
else
{
Stream.WriteLine(line);
cursor = locStart.Column;
}
// Print cursor
string arrow;
if (range.End == null || range.End.Column == -1 || range.End.Column == range.Start.Column)
{
arrow = new string(' ', cursor - 1) + "^";
}
else
{
if (range.End.Column > range.Start.Column)
{
var len = range.End.Column - range.Start.Column;
arrow = new string(' ', cursor - 1) + "^" + new string('~', Math.Min(len - 1, width - cursor - 2));
}
else
{
var len = range.Start.Column - range.End.Column;
arrow = new string(' ', Math.Min(cursor - len - 1, 0)) + new string('~', Math.Min(len - 1, cursor)) + "^";
}
}
if (UseColors)
{
Console.ForegroundColor = ConsoleColor.Green;
Stream.WriteLine(arrow);
Console.ResetColor();
}
else
{
Stream.WriteLine(arrow);
}
}
}
}
/// <summary>
/// Issue an error message
/// </summary>
public void Error(string message, SourceRange range = null)
{
Consume(SeverityEnum.Error, range, message, null);
}