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:- protocol(expanding).

	:- info([
		version is 1:1:0,
		author is 'Paulo Moura',
		date is 2016-07-12,
		comment is 'Term and goal expansion protocol.'
	]).

	:- built_in.

	:- public(goal_expansion/2).
	:- mode(goal_expansion(+callable, -callable), zero_or_one).
	:- info(goal_expansion/2, [
		comment is 'Defines a goal expansion. Called recursively until a fixed point is reached on goals found while compiling a source file (except for goals wrapped using the ``{}/1`` compiler bypass control construct).',
		argnames is ['Goal', 'ExpandedGoal']
	]).

	:- public(term_expansion/2).
	:- mode(term_expansion(+term, -term), zero_or_one).
	:- mode(term_expansion(+term, -list(term)), zero_or_one).
	:- info(term_expansion/2, [
		comment is 'Defines a term expansion. Called until it succeeds on all terms read while compiling a source file (except for terms skipped by using the conditional compilation directives or wrapped using the ``{}/1`` compiler bypass control construct).',
		argnames is ['Term', 'ExpandedTerms']
	]).

:- end_protocol.
