From bbcb29a202436fc0e222e187f1fadf0b1f305465 Mon Sep 17 00:00:00 2001
From: Timotej Lazar <timotej.lazar@fri.uni-lj.si>
Date: Sun, 22 May 2016 17:48:30 +0200
Subject: Prolog: update denotational_semantics problems

---
 .../denotational_semantics/algol_3/common.py       | 78 ----------------------
 .../problems/denotational_semantics/algol_3/en.py  | 32 ---------
 2 files changed, 110 deletions(-)
 delete mode 100644 prolog/problems/denotational_semantics/algol_3/common.py
 delete mode 100644 prolog/problems/denotational_semantics/algol_3/en.py

(limited to 'prolog/problems/denotational_semantics/algol_3')

diff --git a/prolog/problems/denotational_semantics/algol_3/common.py b/prolog/problems/denotational_semantics/algol_3/common.py
deleted file mode 100644
index 8138484..0000000
--- a/prolog/problems/denotational_semantics/algol_3/common.py
+++ /dev/null
@@ -1,78 +0,0 @@
-id = 176
-number = 83
-visible = False
-facts = None
-
-solution = '''\
-algol(fun(S0,S,apply176([printout=[]|S0],S,Minstructs))) -->
-  [begin], instructs176(Minstructs), [end].
-
-instructs176(Minstr) --> instr176(Minstr).
-instructs176(fun(S0,S,
-  (apply176(S0,S1,Minstr),
-   apply176(S1,S,Minstructs)))) 
-  --> 
-  instr176(Minstr), instructs176(Minstructs).
-
-instr176(Massign) --> assign176(Massign).
-instr176(fun(S0,[printout = L1|S1],
-  (memb(X = V,S0),
-   del(printout = L0,S0,S1),
-   conc(L0,[V],L1))))
-  -->
-  [print(X)].
-instr176(fun(S0,S,
-  loop176(S0,Mcond,Minstructs,S)))
-  -->
-  [while], cond176(Mcond), [do,begin], instructs176(Minstructs), [end].
-
-assign176(fun(S0,[X = Value|S1], 
-  (apply176(S0,Value,Mexpr),
-   del(X = _,S0,S1)))) 
-  -->
-  var176(X), [:=], expr176(Mexpr).
-
-cond176( fun( S, TruthVal,
-  (apply176(S,Val1,ME1),
-   apply176(S,Val2,ME2),
-   (Val1 < Val2,!,TruthVal = true ; TruthVal = false))))
-  -->
-  expr176(ME1), [<], expr176(ME2).
-
-var176(X) --> [X], {atom(X)}.
-
-expr176(fun(S,Value,eval(Expr,S,Value))) -->
-  [Expr].
-
-apply176(In, Out, fun(In, Out, Goals)) :-
-  call(Goals).
-
-loop176( State0, Mcond, _, State0) :-
-  apply176( State0, false, Mcond), !.
-loop176( S0, Mcond, MBody, S) :- 
-  copy_term( MBody, MBodyCopy),
-  apply176( S0, S1, MBody),
-  loop176( S1, Mcond, MBodyCopy, S).
-
-eval176( N, _, N) :-
-  number176( N), !.
-eval176( X, State, Val) :- % A program variable
-  atom( X), !, 
-  memb( X = Val, State). 
-eval176( E1 + E2, State, Val) :- !,
-  eval176( E1, State, V1),
-  eval176( E2, State, V2),
-  Val is V1 + V2.
-eval176( E1 - E2, State, Val) :- !,
-  eval176( E1, State, V1),
-  eval176( E2, State, V2),
-  Val is V1 - V2.
-eval176( E1 * E2, State, Val) :- !,
-  eval176( E1, State, V1),
-  eval176( E2, State, V2),
-  Val is V1 * V2.
-eval176( E1 / E2, State, Val) :- !,
-  eval176( E1, State, V1),
-  eval176( E2, State, V2),
-  Val is V1 /  V2.
-'''
diff --git a/prolog/problems/denotational_semantics/algol_3/en.py b/prolog/problems/denotational_semantics/algol_3/en.py
deleted file mode 100644
index 3b91a47..0000000
--- a/prolog/problems/denotational_semantics/algol_3/en.py
+++ /dev/null
@@ -1,32 +0,0 @@
-name = 'algol/3'
-slug = 'interpreter for mini-algol'
-
-description = '''\
-<p>A DCG for mini-algol.</p>
-<pre>
-% apply a function to a starting state
-?- apply([a=2], Out, fun(_In, Out, eval(a+3, _In, Out))).
-  Out = 5.
-
-% a := a+b
-% b := a-b
-% a := a-b
-?- _Program = [begin,a,:=,a+b,b,:=,a-b,a,:=,a-b,end],
-    algol(_F, _Program, []),
-    apply([a=3,b=5], Output, _F).
-  Output = [a=5,b=3,printout=[]].
-
-% a := 0
-% while a < 10 do
-% begin
-%   print(a)
-%   a := a+1
-% end
-?- _Program = [begin,a,:=,0,while,a,<,10,do,begin,print(a),a,:=,a+1,end,end],
-    algol(_F, _Program, []),
-    apply([a=3], Output, _F).
-  Output = [a=10,printout=[0,1,2,3,4,5,6,7,8,9]].
-</pre>
-'''
-
-hint = {}
-- 
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