node-api: rename internal NAPI_VERSION definition

PR-URL: nodejs#48501
Reviewed-By: Gabriel Schulhof <gabrielschulhof@gmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Vladimir Morozov <vmorozov@microsoft.com>
Reviewed-By: Michael Dawson <midawson@redhat.com>

Author: legendecas

src/js_native_api_v8.cc

@@ -3167,7 +3167,7 @@ napi_status NAPI_CDECL napi_get_dataview_info(napi_env env,
 napi_status NAPI_CDECL napi_get_version(napi_env env, uint32_t* result) {
   CHECK_ENV(env);
   CHECK_ARG(env, result);
-  *result = NAPI_VERSION;
+  *result = NODE_API_SUPPORTED_VERSION_MAX;
   return napi_clear_last_error(env);
 }
 

src/node_api.cc

@@ -160,7 +160,7 @@ void ThrowNodeApiVersionError(node::Environment* node_env,
   error_message += " requires Node-API version ";
   error_message += std::to_string(module_api_version);
   error_message += ", but this version of Node.js only supports version ";
-  error_message += NODE_STRINGIFY(NAPI_VERSION) " add-ons.";
+  error_message += NODE_STRINGIFY(NODE_API_SUPPORTED_VERSION_MAX) " add-ons.";
   node_env->ThrowError(error_message.c_str());
 }
 
@@ -172,7 +172,7 @@ inline napi_env NewEnv(v8::Local<v8::Context> context,
   // Validate module_api_version.
   if (module_api_version < NODE_API_DEFAULT_MODULE_API_VERSION) {
     module_api_version = NODE_API_DEFAULT_MODULE_API_VERSION;
-  } else if (module_api_version > NAPI_VERSION &&
+  } else if (module_api_version > NODE_API_SUPPORTED_VERSION_MAX &&
              module_api_version != NAPI_VERSION_EXPERIMENTAL) {
     node::Environment* node_env = node::Environment::GetCurrent(context);
     CHECK_NOT_NULL(node_env);
@@ -673,15 +673,16 @@ node::addon_context_register_func get_node_api_context_register_func(
     const char* module_name,
     int32_t module_api_version) {
   static_assert(
-      NAPI_VERSION == 9,
+      NODE_API_SUPPORTED_VERSION_MAX == 9,
       "New version of Node-API requires adding another else-if statement below "
       "for the new version and updating this assert condition.");
-  if (module_api_version <= NODE_API_DEFAULT_MODULE_API_VERSION) {
-    return node_api_context_register_func<NODE_API_DEFAULT_MODULE_API_VERSION>;
-  } else if (module_api_version == 9) {
+  if (module_api_version == 9) {
     return node_api_context_register_func<9>;
   } else if (module_api_version == NAPI_VERSION_EXPERIMENTAL) {
     return node_api_context_register_func<NAPI_VERSION_EXPERIMENTAL>;
+  } else if (module_api_version >= NODE_API_SUPPORTED_VERSION_MIN &&
+             module_api_version <= NODE_API_DEFAULT_MODULE_API_VERSION) {
+    return node_api_context_register_func<NODE_API_DEFAULT_MODULE_API_VERSION>;
   } else {
     v8impl::ThrowNodeApiVersionError(node_env, module_name, module_api_version);
     return nullptr;

src/node_metadata.cc

@@ -82,7 +82,7 @@ Metadata::Versions::Versions() {
   ares = ARES_VERSION_STR;
   modules = NODE_STRINGIFY(NODE_MODULE_VERSION);
   nghttp2 = NGHTTP2_VERSION;
-  napi = NODE_STRINGIFY(NAPI_VERSION);
+  napi = NODE_STRINGIFY(NODE_API_SUPPORTED_VERSION_MAX);
   llhttp =
       NODE_STRINGIFY(LLHTTP_VERSION_MAJOR)
       "."

src/node_version.h

@@ -91,9 +91,10 @@
  */
 #define NODE_MODULE_VERSION 115
 
-// The NAPI_VERSION provided by this version of the runtime. This is the version
-// which the Node binary being built supports.
-#define NAPI_VERSION 9
+// The NAPI_VERSION supported by the runtime. This is the inclusive range of
+// versions which the Node.js binary being built supports.
+#define NODE_API_SUPPORTED_VERSION_MAX 9
+#define NODE_API_SUPPORTED_VERSION_MIN 1
 
 // Node API modules use NAPI_VERSION 8 by default if it is not explicitly
 // specified. It must be always 8.

tools/getnapibuildversion.py

@@ -12,7 +12,7 @@ def get_napi_version():
 
   f = open(napi_version_h)
 
-  regex = '^#define NAPI_VERSION'
+  regex = '^#define NODE_API_SUPPORTED_VERSION_MAX'
 
   for line in f:
     if re.match(regex, line):