Fix lua binding compatibility

Signed-off-by: owentou <[email protected]>

Author: owent

upb/bindings/lua/def.c

@@ -617,7 +617,11 @@ const upb_FileDef* lupb_FileDef_check(lua_State* L, int narg) {
 
 static int lupb_FileDef_Dependency(lua_State* L) {
   const upb_FileDef* f = lupb_FileDef_check(L, 1);
+#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM >= 501
+  int index = luaL_checkinteger(L, 2);
+#else
   int index = luaL_checkint(L, 2);
+#endif
   const upb_FileDef* dep = upb_FileDef_Dependency(f, index);
   lupb_wrapper_pushwrapper(L, 1, dep, LUPB_FILEDEF);
   return 1;
@@ -631,7 +635,11 @@ static int lupb_FileDef_DependencyCount(lua_State* L) {
 
 static int lupb_FileDef_enum(lua_State* L) {
   const upb_FileDef* f = lupb_FileDef_check(L, 1);
+#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM >= 501
+  int index = luaL_checkinteger(L, 2);
+#else
   int index = luaL_checkint(L, 2);
+#endif
   const upb_EnumDef* e = upb_FileDef_TopLevelEnum(f, index);
   lupb_wrapper_pushwrapper(L, 1, e, LUPB_ENUMDEF);
   return 1;
@@ -645,7 +653,11 @@ static int lupb_FileDef_enumcount(lua_State* L) {
 
 static int lupb_FileDef_msg(lua_State* L) {
   const upb_FileDef* f = lupb_FileDef_check(L, 1);
+#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM >= 501
+  int index = luaL_checkinteger(L, 2);
+#else
   int index = luaL_checkint(L, 2);
+#endif
   const upb_MessageDef* m = upb_FileDef_TopLevelMessage(f, index);
   lupb_wrapper_pushwrapper(L, 1, m, LUPB_MSGDEF);
   return 1;

upb/bindings/lua/upb.c

@@ -61,11 +61,13 @@
 /* Lua compatibility code *****************************************************/
 
 /* Shims for upcoming Lua 5.3 functionality. */
+#if (!defined(LUA_VERSION_NUM)) || LUA_VERSION_NUM < 503
 static bool lua_isinteger(lua_State* L, int argn) {
   LUPB_UNUSED(L);
   LUPB_UNUSED(argn);
   return false;
 }
+#endif
 
 /* Utility functions **********************************************************/
 

upb/bindings/lua/upbc.cc

@@ -23,14 +23,14 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#include "google/protobuf/compiler/code_generator.h"
-#include "google/protobuf/compiler/plugin.h"
-#include "google/protobuf/io/printer.h"
-#include "google/protobuf/descriptor.pb.h"
-#include "google/protobuf/descriptor.h"
 #include "absl/strings/str_replace.h"
 #include "absl/strings/string_view.h"
 #include "absl/strings/substitute.h"
+#include "google/protobuf/compiler/code_generator.h"
+#include "google/protobuf/compiler/plugin.h"
+#include "google/protobuf/descriptor.h"
+#include "google/protobuf/descriptor.pb.h"
+#include "google/protobuf/io/printer.h"
 
 namespace protoc = ::google::protobuf::compiler;
 namespace protobuf = ::google::protobuf;
@@ -79,7 +79,7 @@ static void PrintString(int max_cols, absl::string_view* str,
     } else if (ch == '\'') {
       printer->PrintRaw("\\'");
       max_cols--;
-    } else if (isprint(ch)) {
+    } else if (isprint(static_cast<int>(static_cast<unsigned char>(ch)))) {
       printer->WriteRaw(&ch, 1);
       max_cols--;
     } else {