diogo/yap-6.3
Archived
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

fix documentation of expand_term/2

Browse Source
This commit is contained in:
Vítor Santos Costa 2011-04-22 13:35:02 +01:00
parent c940245182
commit d3388ed9b4
1 changed files with 25 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
docs/yap.tex
View File

@ -6687,14 +6687,11 @@ Grammar related built-in predicates:
@table @code
@item @var{CurrentModule}:expand_term(@var{T},-@var{X})
@item user:expand_term(@var{T},-@var{X})
@item expand_term(@var{T},-@var{X})
@findex expand_term/2
@syindex expand_term/2
@cyindex expand_term/2
@findex term_expansion/2
@syindex term_expansion/2
@cyindex term_expansion/2
This predicate is used by YAP for preprocessing each top level
term read when consulting a file and before asserting or executing it.
It rewrites a term @var{T} to a term @var{X} according to the following
@ -6703,6 +6700,29 @@ rules: first try @code{term_expansion/2} in the current module, and then try to
for DCG rules is applied, together with the arithmetic optimizer
whenever the compilation of arithmetic expressions is in progress.
@item @var{CurrentModule}:term_expansion(@var{T},-@var{X})
@item user:term_expansion(@var{T},-@var{X})
@findex term_expansion/2
@syindex term_expansion/2
@cyindex term_expansion/2
This user-defined predicate is called by @code{expand_term/3} to
preprocess all terms read when consulting a file. If it succeeds:
@itemize
@item
If @var{X} is of the form @code{:- G} or @code{?- G}, it is processed as
a directive.
@item
If @var{X} is of the form @code{'$source_location'(<File>,
<Line>):<Clause>} it is processed as if from @code{File} and line
@code{Line}.
@item
If @var{X} is a list, all terms of the list are asserted or processed
as directives.
@item The term @var{X} is asserted instead of @var{T}.
@end itemize
@item @var{CurrentModule}:goal_expansion(+@var{G},+@var{M},-@var{NG})
@item user:goal_expansion(+@var{G},+@var{M},-@var{NG})
@findex goal_expansion/3
@ -9228,7 +9248,6 @@ also @code{between/3}.
Succeeds if @var{Set3} unifies with the intersection of @var{Set1} and
@var{Set2}. @var{Set1} and @var{Set2} are lists without duplicates. They
need not be ordered.
@end table
@item subtract(+@var{Set}, +@var{Delete}, ?@var{Result})
@findex subtract/3