Add default constructor to libclang_parser

include/cppast/libclang_parser.hpp

@@ -164,7 +164,12 @@ namespace cppast
     public:
         using config = libclang_compile_config;
 
+        /// \effects Creates a parser using the default logger.
+        libclang_parser();
+
+        /// \effects Creates a parser that will log error messages using the specified logger.
         explicit libclang_parser(type_safe::object_ref<const diagnostic_logger> logger);
+
         ~libclang_parser() noexcept override;
 
     private:

include/cppast/parser.hpp

@@ -187,6 +187,8 @@ namespace cppast
                     [&](const std::string&) { return config; });
     }
 
+    /// Parses all files included by `file`.
+    /// \effects For each [cppast::cpp_include_directive]() in file it will parse the included file.
     template <class FileParser>
     void resolve_includes(FileParser& parser, const cpp_file& file,
                           typename FileParser::config config)

src/libclang/libclang_parser.cpp

@@ -330,6 +330,8 @@ struct libclang_parser::impl
     }
 };
 
+libclang_parser::libclang_parser() : libclang_parser(default_logger()) {}
+
 libclang_parser::libclang_parser(type_safe::object_ref<const diagnostic_logger> logger)
 : parser(logger), pimpl_(new impl)
 {