Simplify coral::fs interface

source/coral/files.cpp

@@ -144,41 +144,22 @@ export namespace coral {
 	 * Platform-generalized file system interface.
 	 */
 	struct fs {
-		/**
+		using walker = closure<expected<optional<path>, io_error>()>;
-		 * Descriptor of the various rules that the file-system enforces over access to its files.
-		 */
-		struct access_rules {
-			bool can_read;
-
-			bool can_write;
-		};
-
-		enum class [[nodiscard]] walk_result {
-			ok,
-			not_implemented,
-			access_denied,
-			not_found,
-			io_error,
-		};
 
 		virtual ~fs() {};
 
-		virtual walk_result walk_files(path const & target_path, closure<bool(path const &)> const & apply) {
-			return walk_result::not_implemented;
-		}
-
 		/**
-		 * Queries the file-system for its global [access_rules], returning them.
+		 *
 		 */
-		virtual access_rules query_access() = 0;
+		virtual void walk_files(path const & target_path, closure<void(walker const &)> const & then) {}
 
 		/**
-		 * Attempts to read the file in `file_path`, calling `then` if it was successfully opened for reading.
+		 * Attempts to read the file in `target_path`, calling `then` if it was successfully opened for reading.
 		 */
 		virtual void read_file(path const & target_path, closure<void(file_reader &)> const & then) {}
 
 		/**
-		 * Attempts to write the file in the file system located at `file_path`, calling `then` if it was successfully
+		 * Attempts to write the file in the file system located at `target_path`, calling `then` if it was successfully
 		 * opened for writing.
 		 */
 		virtual void write_file(path const & target_path, closure<void(file_writer &)> const & then) {}