make.pl -- Reload modified source files

This module provides the SWI-Prolog `make' facility that synchronises Prolog internal database after loaded files have been edited.

bug

- Dependency tracking is incomplete. Notably, there is no dependency tracking if compilation of one module depends on goal_expansion/2 or term_expansion/2 rules provided by another.

 make

Reload all source files that have been changed since they were loaded. This predicate peforms the following steps:

1. Compute the set of files that need to be reloaded.
2. Call the hook prolog:make_hook(before, Files)
3. Reload the files
4. Call the hook prolog:make_hook(after, Files)
5. If (4) fails, call list_undefined/0.

The hooks are called with an empty list if no files need reloading.

 modified_file(-File) is nondet[private]

True when File is modified after it has been loaded.

(*) A file is considered modified if the modification time of the file is at least 1ms later that when it was loaded. The 1ms relaxed matching is used to compensate for inconsistent float handling and possible timing jitter.

See also

- https://github.com/SWI-Prolog/swipl-devel/issues/303

 make_reload_file(File)

Reload file into the proper module.

bug

- If modules import each other, we must load them in the proper order for import/export dependencies.

 prolog:make_hook(+When, +Files) is semidet[multifile]

This hook is called by make/0. It is called with the following values for When:

before

The hook is called before reloading starts. The default action is to do nothing.

after

The hook is called after reloading completed. The default action is to call list_undefined/1 as:

list_undefined([scan(local)]).

The hook can be used to change program validation, stop or restart services, etc.

Arguments:

Files

- is a list holding the canonical file names of the files that need to be reloaded. This list can be empty.