Fix C++ integration

inc/YeltsinDB/table_page.h

@@ -1,5 +1,9 @@
 #pragma once
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <stdint.h>
 #include <YeltsinDB/types.h>
 
@@ -100,5 +104,6 @@ YDB_PageSize ydb_page_row_count_get(YDB_TablePage* page);
  */
 void ydb_page_row_count_set(YDB_TablePage* page, YDB_PageSize row_count);
 
-
-
+#ifdef __cplusplus
+}
+#endif

inc/YeltsinDB/ydb.h

@@ -1,5 +1,9 @@
 #pragma once
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <stdint.h>
 #include <YeltsinDB/types.h>
 #include <YeltsinDB/table_page.h>
@@ -148,4 +152,8 @@ YDB_Error ydb_delete_current_page(YDB_Engine* instance);
  * - types.h
  *
  * And in some cases even [table file structure](table_file.md)
- */
+ */
+
+#ifdef __cplusplus
+}
+#endif

src/table_page.c

@@ -1,3 +1,6 @@
+#ifdef __cplusplus
+extern "C" {
+#endif
 #include <stdlib.h>
 #include <string.h>
 #include <YeltsinDB/constants.h>
@@ -112,5 +115,7 @@ void ydb_page_row_count_set(YDB_TablePage *page, YDB_PageSize row_count) {
   page->row_count = row_count;
 }
 
-
+#ifdef __cplusplus
+}
+#endif
 

src/ydb.c

@@ -1,3 +1,7 @@
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -377,3 +381,7 @@ YDB_Error ydb_delete_current_page(YDB_Engine *instance) {
 
   return YDB_ERR_SUCCESS;
 }
+
+#ifdef __cplusplus
+}
+#endif