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definition module loop
// $Id$
from strat import Strategy
from spine import Answer
from trace import Trace
from rule import Rgraph,Rule
from graph import Graph
from StdOverloaded import ==
from strat import Substrategy,Subspine // for Strategy
from graph import Node // for Strategy
from basic import Optional // for Answer
from spine import Spine // for Answer
from trace import History,Transformation // for Trace
loop
:: (((Graph sym pvar) pvar var -> ub:Bool) -> Strategy sym var pvar (Answer sym var pvar))
([Rgraph sym pvar] (Rgraph sym pvar) -> ub:Bool)
!(.[var],.Rule sym var)
-> Trace sym var pvar
| == sym
& == var
& == pvar
initrule
:: ![var]
(sym->[pvar])
sym
-> ([var],Rule sym var)
|
