protocol

termp

Prolog term utility predicates protocol.

Author: Paulo Moura
Version: 1.31
Date: 2010/6/9
Compilation flags:
static

(no dependencies on other entities)

Public interface

depth/2

True if the depth of Term is Depth. The depth of atomic terms is zero; the depth of a compound term is one plus the maximum depth of its sub-terms.

Compilation flags:
static
Template:
depth(Term,Depth)
Mode and number of proofs:
depth(@term,?integer) - zero_or_one

ground/1

True if the argument is ground.

Compilation flags:
static
Template:
ground(Term)
Mode and number of proofs:
ground(@term) - zero_or_one

new/1

Creates a new term instance (if meaningful).

Compilation flags:
static
Template:
new(Term)
Mode and number of proofs:
new(-nonvar) - zero_or_one

occurs/2

True if the variable occurs in the term.

Compilation flags:
static
Template:
occurs(Variable,Term)
Mode and number of proofs:
occurs(@var,@term) - zero_or_one

subsumes/2

The first term subsumes the second term.

Compilation flags:
static
Template:
subsumes(General,Specific)
Mode and number of proofs:
subsumes(?term,@term) - zero_or_one

subterm/2

The first term is a subterm of the second term.

Compilation flags:
static
Template:
subterm(Subterm,Term)
Mode and number of proofs:
subterm(?term,+term) - zero_or_more

valid/1

Term is valid.

Compilation flags:
static
Template:
valid(Term)
Mode and number of proofs:
valid(@nonvar) - zero_or_one

check/1

Checks if a term is valid. Throws an exception if the term is not valid.

Compilation flags:
static
Template:
check(Term)
Mode and number of proofs:
check(@nonvar) - one

variant/2

Each term is a variant of the other (i.e. they are structurally equivalent).

Compilation flags:
static
Template:
variant(Term1,Term2)
Mode and number of proofs:
variant(@term,@term) - zero_or_one

variables/2

Returns a list of all term variables (ordered as found when doing a depth-first, left-to-right traversal of Term).

Compilation flags:
static
Template:
variables(Term,List)
Mode and number of proofs:
variables(@term,-list) - one

singletons/2

Returns a list of all term singleton variables (ordered as found when doing a depth-first, left-to-right traversal of Term).

Compilation flags:
static
Template:
singletons(Term,Singletons)
Mode and number of proofs:
singletons(@term,-list) - one

Protected interface

(none)

Private predicates

(none)

Operators

(none)

Remarks

(none)