update embedding API and add C tests

Author: vmoroz

.clang-format

@@ -79,6 +79,10 @@ JavaScriptWrapImports: true
 KeepEmptyLinesAtTheStartOfBlocks: false
 MacroBlockBegin: ''
 MacroBlockEnd:   ''
+Macros:
+  - "NODE_ENUM(a,b) = enum class b"
+  - "NODE_ENUM_FLAGS(a,b) = enum class b"
+  - "NODE_ENUM_ITEM (a,b) = b"
 MaxEmptyLinesToKeep: 1
 NamespaceIndentation: None
 ObjCBlockIndentWidth: 2

node.gyp

@@ -241,6 +241,7 @@
       'src/node_dir.h',
       'src/node_dotenv.h',
       'src/node_embedding_api.h',
+      'src/node_embedding_api_cpp.h',
       'src/node_errors.h',
       'src/node_exit_code.h',
       'src/node_external_reference.h',
@@ -1267,14 +1268,22 @@
       'sources': [
         'src/node_snapshot_stub.cc',
         'test/embedding/embedtest.cc',
-        'test/embedding/embedtest_c_api.cc',
-        'test/embedding/embedtest_c_api_common.cc',
+        'test/embedding/embedtest_c_api_common.c',
         'test/embedding/embedtest_c_api_common.h',
-        'test/embedding/embedtest_c_api_env.cc',
-        'test/embedding/embedtest_c_api_modules.cc',
-        'test/embedding/embedtest_c_api_preload.cc',
-        'test/embedding/embedtest_c_api_run_main.cc',
-        'test/embedding/embedtest_c_api_threading.cc',
+        'test/embedding/embedtest_c_api_env.c',
+        'test/embedding/embedtest_c_api_modules.c',
+        'test/embedding/embedtest_c_api_preload.c',
+        'test/embedding/embedtest_c_api_run_main.c',
+        'test/embedding/embedtest_c_api_threading.c',
+        'test/embedding/embedtest_c_api.c',
+        'test/embedding/embedtest_c_cpp_api_common.cc',
+        'test/embedding/embedtest_c_cpp_api_common.h',
+        'test/embedding/embedtest_c_cpp_api_env.cc',
+        'test/embedding/embedtest_c_cpp_api_modules.cc',
+        'test/embedding/embedtest_c_cpp_api_preload.cc',
+        'test/embedding/embedtest_c_cpp_api_run_main.cc',
+        'test/embedding/embedtest_c_cpp_api_threading.cc',
+        'test/embedding/embedtest_c_cpp_api.cc',
         'test/embedding/embedtest_main.cc',
       ],
 

src/js_native_api.h

@@ -2,8 +2,6 @@
 #define SRC_JS_NATIVE_API_H_
 
 // This file needs to be compatible with C compilers.
-#include <stdbool.h>  // NOLINT(modernize-deprecated-headers)
-#include <stddef.h>   // NOLINT(modernize-deprecated-headers)
 
 // Use INT_MAX, this should only be consumed by the pre-processor anyway.
 #define NAPI_VERSION_EXPERIMENTAL 2147483647

src/js_native_api_types.h

@@ -4,8 +4,14 @@
 // This file needs to be compatible with C compilers.
 // This is a public include file, and these includes have essentially
 // became part of it's API.
-#include <stddef.h>  // NOLINT(modernize-deprecated-headers)
-#include <stdint.h>  // NOLINT(modernize-deprecated-headers)
+#ifdef __cplusplus
+#include <cstddef>
+#include <cstdint>
+#else
+#include <stdbool.h>  // NOLINT(modernize-deprecated-headers)
+#include <stddef.h>   // NOLINT(modernize-deprecated-headers)
+#include <stdint.h>   // NOLINT(modernize-deprecated-headers)
+#endif
 
 #if !defined __cplusplus || (defined(_MSC_VER) && _MSC_VER < 1900)
 typedef uint16_t char16_t;