README.actions

There are two functions that iterate over a list and call an 'action' function for each of them:

iterate_over_all_blocks_of() and iterate_over_directory().

iterate_over_all_blocks_of() is called from : with
	run_program()      : print_directory_action, find_block_action
	filter_dir_entry() : iterate_over_existing_directory_action
	init_journal()     : find_blocknr_range_action, indirect_journal_block_action, fill_journal_bitmap_action, directory_inode_action
	inode_refers_to()  : inode_refers_to_action
	restore_file()     : restore_file_action

iterate_over_directory is called from : with
	DirectoryBlock::read_block() : read_block_action
	print_directory() : print_dir_entry_long_action
	link_extended_directory_block_to_inode() : init_directories_action
	init_directories() : init_directories_action, extended_directory_action, filename_heuristics_action

Note that iterate_over_directory() calls filter_dir_entry() which then calls the
action via various paths: either directly and/or by calling iterate_over_directory_action
which then calls the action function, or by iterating over a subdirectory by calling
iterate_over_all_blocks_of with iterate_over_existing_directory_action which then
calls iterate_over_directory with the action function. These indirect paths are
hidden in cppgraph graphs by simply stating that a function calls iterate_over_directory__with__action
and have iterate_over_directory__with__action call action directly.