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src/compiler/NubLang/Code/SourceLocation.cs

@@ -0,0 +1,53 @@
+namespace NubLang.Code;
+
+public readonly struct SourceLocation : IEquatable<SourceLocation>
+{
+    public static SourceLocation Zero => new(0, 0);
+
+    public SourceLocation(int line, int column)
+    {
+        Line = line;
+        Column = column;
+    }
+
+    public int Line { get; }
+    public int Column { get; }
+
+    public override string ToString()
+    {
+        return $"{Line}:{Column}";
+    }
+
+    public int CompareTo(SourceLocation other)
+    {
+        var lineComparison = Line.CompareTo(other.Line);
+        if (lineComparison == 0)
+        {
+            return Column.CompareTo(other.Column);
+        }
+
+        return lineComparison;
+    }
+
+    public override bool Equals(object? obj)
+    {
+        return obj is SourceLocation other && Equals(other);
+    }
+
+    public bool Equals(SourceLocation other)
+    {
+        return Line == other.Line && Column == other.Column;
+    }
+
+    public override int GetHashCode()
+    {
+        return HashCode.Combine(typeof(SourceLocation), Line, Column);
+    }
+
+    public static bool operator ==(SourceLocation left, SourceLocation right) => Equals(left, right);
+    public static bool operator !=(SourceLocation left, SourceLocation right) => !Equals(left, right);
+    public static bool operator <(SourceLocation left, SourceLocation right) => left.Line < right.Line || (left.Line == right.Line && left.Column < right.Column);
+    public static bool operator >(SourceLocation left, SourceLocation right) => left.Line > right.Line || (left.Line == right.Line && left.Column > right.Column);
+    public static bool operator <=(SourceLocation left, SourceLocation right) => left.Line <= right.Line || (left.Line == right.Line && left.Column <= right.Column);
+    public static bool operator >=(SourceLocation left, SourceLocation right) => left.Line >= right.Line || (left.Line == right.Line && left.Column >= right.Column);
+}