2 files changed, 0 insertions, 110 deletions
diff --git a/prolog/problems/denotational_semantics/algol_for_3/common.py b/prolog/problems/denotational_semantics/algol_for_3/common.py
deleted file mode 100644
index 1107308..0000000
--- a/prolog/problems/denotational_semantics/algol_for_3/common.py
+++ /dev/null
@@ -1,92 +0,0 @@
-id = 178
-number = 85
-visible = False
-facts = None
-
-solution = '''\
-algol_for(fun(S0,S,apply178([printout=[]|S0],S,Minstructs))) -->
-  [begin], instructs178(Minstructs), [end].
-
-instructs178(Minstr) --> instr178(Minstr).
-instructs178(fun(S0,S,
-  (apply178(S0,S1,Minstr),
-   apply178(S1,S,Minstructs)))) 
-  --> 
-  instr178(Minstr), instructs178(Minstructs).
-
-instr178(Massign) --> assign178(Massign).
-instr178(fun(S0,[printout = L1|S1],
-  (memb(X = V,S0),
-   del(printout = L0,S0,S1),
-   conc(L0,[V],L1))))
-  -->
-  [print(X)].
-instr178(fun(S0,S,
-  loop178(S0,Mcond,Minstructs,S)))
-  -->
-  [while], cond178(Mcond), [do,begin], instructs178(Minstructs), [end].
-instr178(fun(S0, S,
-  (apply178(S0, S1, Minit),
-   for178(S1, Mcond, Mstep, Mbody, S))))
-  -->
-  [for], assign178(Minit), [&], cond178(Mcond), [&], assign178(Mstep), [do, begin], instructs178(Mbody), [end].
-
-assign178(fun(S0,[X = Value|S1], 
-  (apply178(S0,Value,Mexpr),
-   del(X = _,S0,S1)))) 
-  -->
-  var178(X), [:=], expr178(Mexpr).
-
-cond178( fun( S, TruthVal,
-  (apply178(S,Val1,ME1),
-   apply178(S,Val2,ME2),
-   (Val1 < Val2,!,TruthVal = true ; TruthVal = false))))
-  -->
-  expr178(ME1), [<], expr178(ME2).
-
-var178(X) --> [X], {atom(X)}.
-
-expr178(fun(S,Value,eval(Expr,S,Value))) -->
-  [Expr].
-
-apply178(In, Out, fun(In, Out, Goals)) :-
-  call(Goals).
-
-loop178( State0, Mcond, _, State0) :-
-  apply178( State0, false, Mcond), !.
-loop178( S0, Mcond, MBody, S) :- 
-  copy_term( MBody, MBodyCopy),
-  apply178( S0, S1, MBody),
-  loop178( S1, Mcond, MBodyCopy, S).
-
-for178(S0, Mcond, _, _, S0) :-
-  apply178(S0, false, Mcond), !.
-for178(S0, Mcond, Mstep, Mbody, S) :-
-  copy_term(Mbody, Mbody2),
-  copy_term(Mstep, Mstep2),
-  apply178(S0, S1, Mbody),
-  apply178(S1, S2, Mstep),
-  for178(S2, Mcond, Mstep2, Mbody2, S).
-
-eval178( N, _, N) :-
-  number178( N), !.
-eval178( X, State, Val) :- % A program variable
-  atom( X), !, 
-  memb( X = Val, State). 
-eval178( E1 + E2, State, Val) :- !,
-  eval178( E1, State, V1),
-  eval178( E2, State, V2),
-  Val is V1 + V2.
-eval178( E1 - E2, State, Val) :- !,
-  eval178( E1, State, V1),
-  eval178( E2, State, V2),
-  Val is V1 - V2.
-eval178( E1 * E2, State, Val) :- !,
-  eval178( E1, State, V1),
-  eval178( E2, State, V2),
-  Val is V1 * V2.
-eval178( E1 / E2, State, Val) :- !,
-  eval178( E1, State, V1),
-  eval178( E2, State, V2),
-  Val is V1 /  V2.
-'''
diff --git a/prolog/problems/denotational_semantics/algol_for_3/en.py b/prolog/problems/denotational_semantics/algol_for_3/en.py
deleted file mode 100644
index 2f46d36..0000000
--- a/prolog/problems/denotational_semantics/algol_for_3/en.py
+++ /dev/null
@@ -1,18 +0,0 @@
-name = 'algol_for/3'
-slug = 'interpreter for mini-algol with for-statement'
-
-description = '''\
-<p>Extend the given DCG for mini-algol to support the for-statement. Example:</p>
-<pre>
-% for a := 0 & a < 5 & a := a + 1 do
-% begin
-%   print(a)
-% end
-?- _Program = [begin,for,a,:=,0,&,a,<,5,&,a,:=,a+1,do,begin,print(a),end,end],
-    algol_for(_F, _Program, []),
-    apply([a=2], Output, _F).
-  Output = [a=5,printout=[0,1,2,3,4]].
-</pre>
-'''
-
-hint = {}