mirror of
https://github.com/Mercury-Language/mercury.git
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33eb3028f5
tests/accumulator/*.m:
tests/analysis_*/*.m:
tests/benchmarks*/*.m:
tests/debugger*/*.{m,exp,inp}:
tests/declarative_debugger*/*.{m,exp,inp}:
tests/dppd*/*.m:
tests/exceptions*/*.m:
tests/general*/*.m:
tests/grade_subdirs*/*.m:
tests/hard_coded*/*.m:
Make these tests use four-space indentation, and ensure that
each module is imported on its own line. (I intend to use the latter
to figure out which subdirectories' tests can be executed in parallel.)
These changes usually move code to different lines. For the debugger tests,
specify the new line numbers in .inp files and expect them in .exp files.
108 lines
2.0 KiB
Mathematica
108 lines
2.0 KiB
Mathematica
%---------------------------------------------------------------------------%
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% vim: ts=4 sw=4 et ft=mercury
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%---------------------------------------------------------------------------%
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%
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:- module interactive.
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:- interface.
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:- import_module io.
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:- import_module list.
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:- pred main(io__state, io__state).
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:- mode main(di, uo) is cc_multi.
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% exported for use with interactive queries in the debugger
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:- pred qperm(list(T), list(T)).
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:- mode qperm(in, out) is nondet.
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:- implementation.
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:- import_module int.
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main -->
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( { data(Data), queen(Data, Out) } ->
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print_list(Out)
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;
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io__write_string("No solution\n")
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).
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:- pred data(list(int)).
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:- mode data(out) is det.
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:- pred queen(list(int), list(int)).
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:- mode queen(in, out) is nondet.
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:- pred qdelete(T, list(T), list(T)).
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:- mode qdelete(out, in, out) is nondet.
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:- pred safe(list(int)).
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:- mode safe(in) is semidet.
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:- pred nodiag(int, int, list(int)).
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:- mode nodiag(in, in, in) is semidet.
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data([1, 2, 3, 4, 5]).
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queen(Data, Out) :-
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qperm(Data, Out),
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safe(Out).
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qperm([], []).
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qperm([X | Y], K) :-
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qdelete(U, [X | Y], Z),
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K = [U | V],
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qperm(Z, V).
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qdelete(A, [A | L], L).
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qdelete(X, [A | Z], [A | R]) :-
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qdelete(X, Z, R).
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safe([]).
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safe([N | L]) :-
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nodiag(N, 1, L),
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safe(L).
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nodiag(_, _, []).
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nodiag(B, D, [N | L]) :-
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NmB is N - B,
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BmN is B - N,
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( D = NmB ->
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fail
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; D = BmN ->
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fail
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;
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true
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),
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D1 is D + 1,
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nodiag(B, D1, L).
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:- pred print_list(list(int), io__state, io__state).
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:- mode print_list(in, di, uo) is det.
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print_list(Xs) -->
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(
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{ Xs = [] }
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->
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io__write_string("[]\n")
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;
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io__write_string("["),
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print_list_2(Xs),
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io__write_string("]\n")
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).
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:- pred print_list_2(list(int), io__state, io__state).
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:- mode print_list_2(in, di, uo) is det.
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print_list_2([]) --> [].
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print_list_2([X | Xs]) -->
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io__write_int(X),
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(
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{ Xs = [] }
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->
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[]
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;
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io__write_string(", "),
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print_list_2(Xs)
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).
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