chr.pl
- call_preprocess(+CHR0, -CHR) is det[private]
- Call user chr:
preprocess(CHR0, CHR). - debug_event(+State, +Event)[multifile]
- Hook into the CHR debugger. At this moment we will discard CHR events if we are in a Prolog `skip' and we ignore the
- debug_interact(+Event, +Depth, -Command)[multifile]
- Hook into the CHR debugger to display Event and ask for the next command to execute. This definition causes the normal Prolog debugger to be used for the standard ports.
- debug_ask_continue(-Command) is semidet[multifile]
- Hook to ask for a CHR debug continuation. Must bind Command to
one of
creep,skip,ancestors,nodebug,abort,fail,break,helporexit. - chr_residuals// is det[private]
- Find the CHR constraints from the store. These are accessible
through the nondet predicate current_chr_constraint/1. Doing a
findall/4 however would loose the bindings. We therefore rolled
findallv/4, which exploits non-backtrackable assignment and
realises a copy of the template without disturbing the bindings
using this strangely looking construct. Note that the bindings
created by the unifications are in New, which is newer then the
latest choicepoint and therefore the bindings are not trailed.
duplicate_term(Templ, New), New = Templ
- term_colours(+Term, -Colours)[private]
- Colourisation of a toplevel term as read from the file.
- goal_colours(+Goal, -Colours)[private]
- Colouring of special goals.
Re-exported predicates
The following predicates are re-exported from other modules
- find_chr_constraint(-Constraint) is nondet
- True when Constraint is a currently known constraint in any known CHR module.
Undocumented predicates
The following predicates are exported, but not or incorrectly documented.