Added error handling for CompilationDatabase

src/compilation_database.cc

@@ -2,13 +2,13 @@
 #include <exception>
 
 clangmm::CompilationDatabase::CompilationDatabase(const std::string &project_path) {
-  CXCompilationDatabase_Error error;
+  cx_db = clang_CompilationDatabase_fromDirectory(project_path.c_str(), &cx_db_error);
-  cx_db = clang_CompilationDatabase_fromDirectory(project_path.c_str(), &error);
-  if(error) {
-    //TODO: compile_commands.json is missing, create it?
-  }
 }
 
 clangmm::CompilationDatabase::~CompilationDatabase() {
   clang_CompilationDatabase_dispose(cx_db);
 }
+
+clangmm::CompilationDatabase::operator bool() const {
+  return !static_cast<bool>(cx_db_error);
+}

src/compilation_database.h

@@ -6,10 +6,13 @@
 
 namespace clangmm {
   class CompilationDatabase {
+    CXCompilationDatabase_Error cx_db_error;
   public:
     explicit CompilationDatabase(const std::string &project_path);
     ~CompilationDatabase();
     
+    operator bool() const;
+
     CXCompilationDatabase cx_db;
   };
 }