Merged utility functions into main extension code

gpgs/src/gpgs_callback.cpp

@@ -1,6 +1,5 @@
 #if defined(DM_PLATFORM_IOS) || defined(DM_PLATFORM_ANDROID)
 #include "private_gpgs_callback.h"
-#include "utils/LuaUtils.h"
 #include <stdlib.h>
 
 static GPGS_callback            m_callback;

gpgs/src/gpgs_extension.cpp

@@ -13,7 +13,6 @@
 #include "gpgs_extension.h"
 #include "private_gpgs_callback.h"
 #include "com_defold_gpgs_GpgsJNI.h"
-#include "utils/LuaUtils.h"
 
 
 struct GPGS
@@ -78,6 +77,85 @@ static GPGS_Achievement g_gpgs_achievement;
 static GPGS_Leaderboard g_gpgs_leaderboard;
 static GPGS_Events      g_gpgs_events;
 
+
+// generic utility functions
+
+
+static bool luaL_checkbool(lua_State *L, int numArg)
+{
+    bool b = false;
+    if (lua_isboolean(L, numArg))
+    {
+        b = lua_toboolean(L, numArg);
+    }
+    else
+    {
+        luaL_typerror(L, numArg, lua_typename(L, LUA_TBOOLEAN));
+    }
+    return b;
+}
+
+static bool luaL_checkboold(lua_State *L, int numArg, int def)
+{
+    int type = lua_type(L, numArg);
+    if (type != LUA_TNONE && type != LUA_TNIL)
+    {
+        return luaL_checkbool(L, numArg);
+    }
+    return def;
+}
+
+static lua_Number luaL_checknumberd(lua_State *L, int numArg, lua_Number def)
+{
+    int type = lua_type(L, numArg);
+    if (type != LUA_TNONE && type != LUA_TNIL)
+    {
+        return luaL_checknumber(L, numArg);
+    }
+    return def;
+}
+
+static char* luaL_checkstringd(lua_State *L, int numArg, const char* def)
+{
+    int type = lua_type(L, numArg);
+    if (type != LUA_TNONE && type != LUA_TNIL)
+    {
+        return (char*)luaL_checkstring(L, numArg);
+    }
+    return (char*)def;
+}
+
+static lua_Number luaL_checktable_number(lua_State *L, int numArg, const char* field, lua_Number def)
+{
+    lua_Number result = def;
+    if(lua_istable(L, numArg))
+    {
+        lua_getfield(L, numArg, field);
+        if(!lua_isnil(L, -1))
+        {
+            result = luaL_checknumber(L, -1);
+        }
+        lua_pop(L, 1);
+    }
+    return result;
+}
+
+static char* luaL_checktable_string(lua_State *L, int numArg, const char* field, char* def)
+{
+    char* result = def;
+    if(lua_istable(L, numArg))
+    {
+        lua_getfield(L, numArg, field);
+        if(!lua_isnil(L, -1))
+        {
+            result = (char*)luaL_checkstring(L, -1);
+        }
+        lua_pop(L, 1);
+    }
+    return result;
+}
+
+
 // generic JNI calls
 
 // void method(char*)