Update Cobalt to support and use Lua 5.2

README.md

@@ -1,12 +1,12 @@
 # Cobalt [![Current build status](https://github.com/SquidDev/Cobalt/workflows/Build/badge.svg)](https://github.com/SquidDev/Cobalt/actions "Current build status")
 
 ## What?
-Cobalt is a fork of LuaJ 2.0 (Lua 5.1) with many features of LuaJ 3.0 backported.
+Cobalt is a fork of LuaJ 2.0 (Lua 5.1) + Lua 5.2 with many features of LuaJ 3.0 backported.
 
 It allows multiple Lua instances to be run at once, with no shared metatables.
 
 ## Why?
 LuaJ 2.0 had too many bugs, mostly minor but annoying. Cobalt is an attempt to slim down LuaJ (only the JSE will be supported) and fix most of the bugs.
 
-## But Lua 5.1 is outdated!
+## But Lua 5.2 is outdated!
 I am considering having a separate Lua 5.3 branch but that is not an immediate priority right now.

build.gradle

@@ -6,7 +6,7 @@ plugins {
 }
 
 group = 'org.squiddev'
-version = '0.5.5'
+version = '0.6.0'
 
 java {
 	toolchain {

src/main/java/org/squiddev/cobalt/ErrorFactory.java

@@ -27,6 +27,7 @@
 import org.squiddev.cobalt.debug.DebugFrame;
 import org.squiddev.cobalt.debug.DebugHandler;
 import org.squiddev.cobalt.debug.DebugHelpers;
+import org.squiddev.cobalt.debug.DebugHelpers52;
 
 /**
  * Factory class for errors
@@ -106,7 +107,7 @@ public static LuaError operandError(LuaState state, LuaValue operand, String ver
 			DebugFrame info = DebugHandler.getDebugState(state).getStack();
 			if (info != null && info.closure != null) {
 				if (stack < info.closure.getPrototype().maxstacksize) {
-					kind = DebugHelpers.getObjectName(info, stack);
+					kind = info.closure.getPrototype().isLua52 ? DebugHelpers52.getObjectName(info, stack) : DebugHelpers.getObjectName(info, stack);
 				}
 			}
 		}