From 6bc9249094c3de468726f59649dbe45ec7460d5d Mon Sep 17 00:00:00 2001
From: Blendi <blendi@codersquack.nl>
Date: Mon, 20 Apr 2026 21:48:06 +0200
Subject: [PATCH] lexer: disallow weird lexer number jank

---
 src/lexer.c | 16 ++++++++++++++++
 src/main.c  |  2 +-
 src/noom.h  |  2 ++
 3 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/src/lexer.c b/src/lexer.c
index 0508e77..8b8d136 100644
--- a/src/lexer.c
+++ b/src/lexer.c
@@ -131,6 +131,14 @@ noom_uint_t noomL_getnumber(const char* s, noomL_ErrorType* error, noom_LuaVersi
 			*error = NOOML_ERROR_MALFORMED_NUM;
 			return 0;
 		}
+
+		// check if identifier starter, if so, it's malformed (you can't do a=0xffl=2 or whatevs)
+		if (version >= NOOM_VERSION_51) { // always true for now, but if 5.0 this shouldn't happen.
+			if (noomL_isalpha(s[len]) || s[len] == '_') {
+				*error = NOOML_ERROR_MALFORMED_NUM;
+				return 0;
+			}
+		}
 		
 		return len;
 	} else {
@@ -170,6 +178,14 @@ noom_uint_t noomL_getnumber(const char* s, noomL_ErrorType* error, noom_LuaVersi
 			}
 		}
 
+		// check if identifier starter, if so, it's malformed (you can't do a=53b=2 or whatevs)
+		if (version >= NOOM_VERSION_51) { // always true for now, but if 5.0 this shouldn't happen.
+			if (noomL_isalpha(s[len]) || s[len] == '_') {
+				*error = NOOML_ERROR_MALFORMED_NUM;
+				return 0;
+			}
+		}
+
 		return len;
 	}
 
diff --git a/src/main.c b/src/main.c
index 1582e5f..6bf3524 100644
--- a/src/main.c
+++ b/src/main.c
@@ -33,7 +33,7 @@ void print_node(noomP_Node* node, noom_uint_t depth) {
 
 int main(int argc, char** argv) {
 	// uhh uhhh uhhhhh
-	const char* code = "local a = 0x0.1E";
+	const char* code = "local a = 52 local b = 2";
 	noom_uint_t pos = 0;
 
 	printf("LEX OUTPUT:\n");
diff --git a/src/noom.h b/src/noom.h
index 98e0eb9..864f978 100644
--- a/src/noom.h
+++ b/src/noom.h
@@ -1,8 +1,10 @@
 typedef enum noom_LuaVersion {
+	// no 5.0, at least for now, cause it doesn't seem to be used much and is a bit *weird*
 	NOOM_VERSION_51,
 	NOOM_VERSION_52,
 	NOOM_VERSION_53,
 	NOOM_VERSION_54
+	// no you don't get 5.5; if someone wants to do it and maintain it, they can, i'm not gonna.
 } noom_LuaVersion;