| 1 | |
|---|
| 2 | :- protocol(termp). |
|---|
| 3 | |
|---|
| 4 | |
|---|
| 5 | :- info([ |
|---|
| 6 | version is 1.0, |
|---|
| 7 | author is 'Paulo Moura', |
|---|
| 8 | date is 2000/7/24, |
|---|
| 9 | comment is 'Prolog terms protocol.']). |
|---|
| 10 | |
|---|
| 11 | |
|---|
| 12 | :- public(ground/1). |
|---|
| 13 | |
|---|
| 14 | :- mode(ground(@term), zero_or_one). |
|---|
| 15 | |
|---|
| 16 | :- info(ground/1, [ |
|---|
| 17 | comment is 'True if the argument is ground.', |
|---|
| 18 | argnames is ['Term']]). |
|---|
| 19 | |
|---|
| 20 | |
|---|
| 21 | :- public(new/1). |
|---|
| 22 | |
|---|
| 23 | :- mode(new(-nonvar), zero_or_one). |
|---|
| 24 | |
|---|
| 25 | :- info(new/1, [ |
|---|
| 26 | comment is 'Creates a new term instance (if meaningful).', |
|---|
| 27 | argnames is ['Term']]). |
|---|
| 28 | |
|---|
| 29 | |
|---|
| 30 | :- public(occurs/2). |
|---|
| 31 | |
|---|
| 32 | :- mode(occurs(@var, @term), zero_or_one). |
|---|
| 33 | |
|---|
| 34 | :- info(occurs/2, [ |
|---|
| 35 | comment is 'True if the variable occurs in the term.', |
|---|
| 36 | argnames is ['Variable', 'Term']]). |
|---|
| 37 | |
|---|
| 38 | |
|---|
| 39 | :- public(subsumes/2). |
|---|
| 40 | |
|---|
| 41 | :- mode(subsumes(@term, @term), zero_or_one). |
|---|
| 42 | |
|---|
| 43 | :- info(subsumes/2, [ |
|---|
| 44 | comment is 'The first term subsumes the second term.', |
|---|
| 45 | argnames is ['General', 'Specific']]). |
|---|
| 46 | |
|---|
| 47 | |
|---|
| 48 | :- public(subterm/2). |
|---|
| 49 | |
|---|
| 50 | :- mode(subterm(?term, +term), zero_or_more). |
|---|
| 51 | |
|---|
| 52 | :- info(subterm/2, [ |
|---|
| 53 | comment is 'The first term is a subterm of the second term.', |
|---|
| 54 | argnames is ['Subterm', 'Term']]). |
|---|
| 55 | |
|---|
| 56 | |
|---|
| 57 | :- public(valid/1). |
|---|
| 58 | |
|---|
| 59 | :- mode(valid(@nonvar), zero_or_one). |
|---|
| 60 | |
|---|
| 61 | :- info(valid/1, [ |
|---|
| 62 | comment is 'Term is valid.', |
|---|
| 63 | argnames is ['Term']]). |
|---|
| 64 | |
|---|
| 65 | |
|---|
| 66 | :- public(vars/2). |
|---|
| 67 | |
|---|
| 68 | :- mode(vars(@term, -list), one). |
|---|
| 69 | |
|---|
| 70 | :- info(vars/2, [ |
|---|
| 71 | comment is 'Returns a list of all term variables.', |
|---|
| 72 | argnames is ['Term', 'List']]). |
|---|
| 73 | |
|---|
| 74 | |
|---|
| 75 | :- end_protocol. |
|---|
