diangostics

2026-02-08 19:24:06 +01:00
parent 00714ea4b0
commit e20f6cd7af
4 changed files with 208 additions and 32 deletions
--- a/compiler/Compiler/Diagnostic.cs
+++ b/compiler/Compiler/Diagnostic.cs
@@ -0,0 +1,77 @@
+namespace Compiler;
+
+public sealed class Diagnostic(DiagnosticSeverity severity, string message, string? help, FileInfo? file)
+{
+    public static DiagnosticBuilder Info(string message) => new DiagnosticBuilder(DiagnosticSeverity.Info, message);
+    public static DiagnosticBuilder Warning(string message) => new DiagnosticBuilder(DiagnosticSeverity.Warning, message);
+    public static DiagnosticBuilder Error(string message) => new DiagnosticBuilder(DiagnosticSeverity.Error, message);
+
+    public readonly DiagnosticSeverity Severity = severity;
+    public readonly string Message = message;
+    public readonly string? Help = help;
+    public readonly FileInfo? File = file;
+}
+
+public sealed class DiagnosticBuilder(DiagnosticSeverity severity, string message)
+{
+    private FileInfo? file;
+    private string? help;
+
+    public DiagnosticBuilder At(string fileName, int line, int column, int length)
+    {
+        file = new FileInfo(fileName, line, column, length);
+        return this;
+    }
+
+    public DiagnosticBuilder At(string fileName, Token? token)
+    {
+        if (token != null)
+        {
+            At(fileName, token.Line, token.Column, token.Length);
+        }
+
+        return this;
+    }
+
+    public DiagnosticBuilder At(string fileName, Node? node)
+    {
+        if (node != null && node.Tokens.Count != 0)
+        {
+            // todo(nub31): Calculate length based on last token
+            At(fileName, node.Tokens[0]);
+        }
+
+        return this;
+    }
+
+    public DiagnosticBuilder WithHelp(string helpMessage)
+    {
+        help = helpMessage;
+        return this;
+    }
+
+    public Diagnostic Build()
+    {
+        return new Diagnostic(severity, message, help, file);
+    }
+}
+
+public sealed class FileInfo(string file, int line, int column, int length)
+{
+    public readonly string File = file;
+    public readonly int Line = line;
+    public readonly int Column = column;
+    public readonly int Length = length;
+}
+
+public enum DiagnosticSeverity
+{
+    Info,
+    Warning,
+    Error,
+}
+
+public sealed class CompileException(Diagnostic diagnostic) : Exception
+{
+    public readonly Diagnostic Diagnostic = diagnostic;
+}