moved compatibility code in a separate file

5 files changed, 74 insertions, 68 deletions

diff --git a/src/compat.c b/src/compat.c
new file mode 100644
index 0000000..1a66f38
--- /dev/null
+++ b/src/compat.c
@@ -0,0 +1,44 @@
+/*
+ * ###############################################################################################
+ * ######################################### Lua 5.1/5.2 #########################################
+ * ###############################################################################################
+ */
+#include "compat.h"
+
+/*
+** Copied from Lua 5.2 loadlib.c
+*/
+#if LUA_VERSION_NUM == 501
+static int luaL_getsubtable (lua_State *L, int idx, const char *fname)
+{
+        lua_getfield(L, idx, fname);
+        if (lua_istable(L, -1))
+                return 1;  /* table already there */
+        else
+        {
+                lua_pop(L, 1);  /* remove previous result */
+                idx = lua_absindex(L, idx);
+                lua_newtable(L);
+                lua_pushvalue(L, -1);  /* copy to be left at top */
+                lua_setfield(L, idx, fname);  /* assign new table to field */
+                return 0;  /* false, because did not find table there */
+        }
+}
+
+void luaL_requiref (lua_State *L, const char *modname, lua_CFunction openf, int glb)
+{
+        lua_pushcfunction(L, openf);
+        lua_pushstring(L, modname);  /* argument to open function */
+        lua_call(L, 1, 1);  /* open module */
+        luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED");
+        lua_pushvalue(L, -2);  /* make copy of module (call result) */
+        lua_setfield(L, -2, modname);  /* _LOADED[modname] = module */
+        lua_pop(L, 1);  /* remove _LOADED table */
+        if (glb)
+        {
+                lua_pushvalue(L, -1);  /* copy of 'mod' */
+                lua_setglobal(L, modname);  /* _G[modname] = module */
+        }
+}
+#endif // LUA_VERSION_NUM
+
diff --git a/src/compat.h b/src/compat.h
new file mode 100644
index 0000000..a5801c4
--- /dev/null
+++ b/src/compat.h
@@ -0,0 +1,29 @@
+#if !defined( __COMPAT_H__)
+#define __COMPAT_H__ 1
+
+// code is now using Lua 5.2 API
+// add Lua 5.2 API when building for Lua 5.1
+#if LUA_VERSION_NUM == 501
+#define lua_absindex( L, idx) (((idx) >= 0 || (idx) <= LUA_REGISTRYINDEX) ? (idx) : lua_gettop(L) + (idx) +1)
+#define lua_pushglobaltable(L) lua_pushvalue( L, LUA_GLOBALSINDEX)
+#define lua_setuservalue lua_setfenv
+#define lua_getuservalue lua_getfenv
+#define lua_rawlen lua_objlen
+#define luaG_registerlibfuncs( L, _funcs) luaL_register( L, NULL, _funcs)
+#define LUA_OK 0
+#define LUA_ERRGCMM 666 // doesn't exist in Lua 5.1, we don't care about the actual value
+void luaL_requiref (lua_State* L, const char* modname, lua_CFunction openf, int glb); // implementation copied from Lua 5.2 sources
+#endif // LUA_VERSION_NUM == 501
+
+// wrap Lua 5.2 calls under Lua 5.1 API when it is simpler that way
+#if LUA_VERSION_NUM == 502
+#ifndef lua_equal // already defined when compatibility is active in luaconf.h
+#define lua_equal( L, a, b) lua_compare( L, a, b, LUA_OPEQ)
+#endif // lua_equal
+#ifndef lua_lessthan // already defined when compatibility is active in luaconf.h
+#define lua_lessthan( L, a, b) lua_compare( L, a, b, LUA_OPLT)
+#endif // lua_lessthan
+#define luaG_registerlibfuncs( L, _funcs) luaL_setfuncs( L, _funcs, 0)
+#endif // LUA_VERSION_NUM == 502
+
+#endif // __COMPAT_H__
diff --git a/src/lanes.c b/src/lanes.c
index 9e79f64..5f2f492 100644
--- a/src/lanes.c
+++ b/src/lanes.c
@@ -90,6 +90,7 @@ THE SOFTWARE.
 #include "lauxlib.h"
 
 #include "threading.h"
+#include "compat.h"
 #include "tools.h"
 #include "keeper.h"
 #include "lanes.h"
diff --git a/src/tools.c b/src/tools.c
index ea7662b..d2b316b 100644
--- a/src/tools.c
+++ b/src/tools.c
@@ -64,49 +64,6 @@ void ASSERT_IMPL( lua_State* L, bool_t cond_, char const* file_, int const line_
 char const* const CONFIG_REGKEY = "ee932492-a654-4506-9da8-f16540bdb5d4";
 char const* const LOOKUP_REGKEY = "ddea37aa-50c7-4d3f-8e0b-fb7a9d62bac5";
 
-/*
- * ###############################################################################################
- * ######################################### Lua 5.1/5.2 #########################################
- * ###############################################################################################
- */
-
-/*
-** Copied from Lua 5.2 loadlib.c
-*/
-#if LUA_VERSION_NUM == 501
-static int luaL_getsubtable (lua_State *L, int idx, const char *fname)
-{
-        lua_getfield(L, idx, fname);
-        if (lua_istable(L, -1))
-                return 1;  /* table already there */
-        else
-        {
-                lua_pop(L, 1);  /* remove previous result */
-                idx = lua_absindex(L, idx);
-                lua_newtable(L);
-                lua_pushvalue(L, -1);  /* copy to be left at top */
-                lua_setfield(L, idx, fname);  /* assign new table to field */
-                return 0;  /* false, because did not find table there */
-        }
-}
-
-void luaL_requiref (lua_State *L, const char *modname, lua_CFunction openf, int glb)
-{
-        lua_pushcfunction(L, openf);
-        lua_pushstring(L, modname);  /* argument to open function */
-        lua_call(L, 1, 1);  /* open module */
-        luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED");
-        lua_pushvalue(L, -2);  /* make copy of module (call result) */
-        lua_setfield(L, -2, modname);  /* _LOADED[modname] = module */
-        lua_pop(L, 1);  /* remove _LOADED table */
-        if (glb)
-        {
-                lua_pushvalue(L, -1);  /* copy of 'mod' */
-                lua_setglobal(L, modname);  /* _G[modname] = module */
-        }
-}
-#endif // LUA_VERSION_NUM
-
 DEBUGSPEW_CODE( char const* debugspew_indent = "----+----!----+----!----+----!----+----!----+----!----+----!----+----!----+");
 
 
diff --git a/src/tools.h b/src/tools.h
index 708421c..8e8bb7d 100644
--- a/src/tools.h
+++ b/src/tools.h
@@ -16,31 +16,6 @@
 #define inline __inline
 #endif
 
-// code is now using Lua 5.2 API
-// add Lua 5.2 API when building for Lua 5.1
-#if LUA_VERSION_NUM == 501
-#define lua_absindex( L, idx) (((idx) >= 0 || (idx) <= LUA_REGISTRYINDEX) ? (idx) : lua_gettop(L) + (idx) +1)
-#define lua_pushglobaltable(L) lua_pushvalue( L, LUA_GLOBALSINDEX)
-#define lua_setuservalue lua_setfenv
-#define lua_getuservalue lua_getfenv
-#define lua_rawlen lua_objlen
-#define luaG_registerlibfuncs( L, _funcs) luaL_register( L, NULL, _funcs)
-#define LUA_OK 0
-#define LUA_ERRGCMM 666 // doesn't exist in Lua 5.1, we don't care about the actual value
-void luaL_requiref (lua_State* L, const char* modname, lua_CFunction openf, int glb); // implementation copied from Lua 5.2 sources
-#endif // LUA_VERSION_NUM == 501
-
-// wrap Lua 5.2 calls under Lua 5.1 API when it is simpler that way
-#if LUA_VERSION_NUM == 502
-#ifndef lua_equal // already defined when compatibility is active in luaconf.h
-#define lua_equal( L, a, b) lua_compare( L, a, b, LUA_OPEQ)
-#endif // lua_equal
-#ifndef lua_lessthan // already defined when compatibility is active in luaconf.h
-#define lua_lessthan( L, a, b) lua_compare( L, a, b, LUA_OPLT)
-#endif // lua_lessthan
-#define luaG_registerlibfuncs( L, _funcs) luaL_setfuncs( L, _funcs, 0)
-#endif // LUA_VERSION_NUM == 502
-
 // For some reason, LuaJIT 64bits doesn't support lua_newstate()
 // If you build specifically for this situation, change value to 0
 #define PROPAGATE_ALLOCF 1