From 5fd1bef2a40954fc9fe3c298116497da946c47e1 Mon Sep 17 00:00:00 2001
From: "Tristan B. Velloza Kildaire" <deavmi@redxen.eu>
Date: Sun, 22 Jan 2023 14:45:25 +0200
Subject: [PATCH] Lexer

- Added new exception type `LexerException`
- Added `LexerError` enum to support various error types of the `LexerException` exception type
---
 source/tlang/compiler/lexer.d | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/source/tlang/compiler/lexer.d b/source/tlang/compiler/lexer.d
index e3e4a653..95f09875 100644
--- a/source/tlang/compiler/lexer.d
+++ b/source/tlang/compiler/lexer.d
@@ -5,6 +5,26 @@ import gogga;
 import std.conv : to;
 import std.string : cmp;
 import std.ascii : isDigit;
+import misc.exceptions : TError;
+
+public enum LexerError
+{
+    EXHAUSTED_CHARACTERS,
+    OTHER
+}
+
+public final class LexerException : TError
+{
+    public const Lexer offendingInstance;
+    public const LexerError errType;
+
+    this(Lexer offendingInstance, LexerError errType = LexerError.OTHER, string msg = "")
+    {
+        super(to!(string)(errType)~(msg.length ? ": "~msg : ""));
+        this.offendingInstance = offendingInstance;
+        this.errType = errType;
+    }
+}
 
 /* TODO: Add Token type (which matches column and position too) */
 public final class Token