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b4c3bb1387
Estimated hours taken: 3 Branches: main Clean up in unused module imports in the Mercury system detected by --warn-unused-imports. analysis/*.m: browser/*.m: deep_profiler/*.m: compiler/*.m: library/*.m: mdbcomp/*.m: profiler/*.m: slice/*.m: Remove unused module imports. Fix some minor departures from our coding standards. analysis/Mercury.options: browser/Mercury.options: deep_profiler/Mercury.options: compiler/Mercury.options: library/Mercury.options: mdbcomp/Mercury.options: profiler/Mercury.options: slice/Mercury.options: Set --no-warn-unused-imports for those modules that are used as packages or otherwise break --warn-unused-imports, e.g. because they contain predicates with both foreign and Mercury clauses and some of the imports only depend on the latter.
198 lines
7.2 KiB
Mathematica
198 lines
7.2 KiB
Mathematica
%-----------------------------------------------------------------------------%
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% vim: ft=mercury ts=4 sw=4 et
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%-----------------------------------------------------------------------------%
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% Copyright (C) 2001, 2005-2006 The University of Melbourne.
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% This file may only be copied under the terms of the GNU General
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% Public License - see the file COPYING in the Mercury distribution.
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%-----------------------------------------------------------------------------%
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%
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% Authors: conway, zs.
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%
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% This module contains utility predicates for handling arrays.
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:- module array_util.
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:- interface.
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:- import_module array.
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:- import_module list.
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%-----------------------------------------------------------------------------%
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% Perform a mode cast on the given array, making the compiler believe that
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% the ground array is unique. Should be used only if the only use of the
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% old value is as input to the upcoming destructive operation that needs
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% the array to be unique. Otherwise, calling this function is dangerous.
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%
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:- func u(T) = T.
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:- mode (u(in) = array_uo) is det.
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% Performs a foldl on all the elements of the given array, starting at
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% index 1.
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%
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:- pred array_foldl_from_1(pred(int, T, U, U), array(T), U, U).
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:- mode array_foldl_from_1(pred(in, in, di, uo) is det, in, di, uo) is det.
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:- mode array_foldl_from_1(pred(in, in, array_di, array_uo) is det, in,
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array_di, array_uo) is det.
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:- mode array_foldl_from_1(pred(in, in, in, out) is det, in, in, out) is det.
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% Performs a foldl on all the elements of the given array, starting at
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% index 0.
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%
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:- pred array_foldl_from_0(pred(int, T, U, U), array(T), U, U).
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:- mode array_foldl_from_0(pred(in, in, di, uo) is det, in, di, uo) is det.
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:- mode array_foldl_from_0(pred(in, in, array_di, array_uo) is det, in,
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array_di, array_uo) is det.
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:- mode array_foldl_from_0(pred(in, in, in, out) is det, in, in, out) is det.
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% Performs a foldl on all the elements of the given array between the two
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% index values given by the first two arguments, both inclusive.
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%
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:- pred array_foldl(int, int, pred(int, T, U, U), array(T), U, U).
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:- mode array_foldl(in, in, pred(in, in, di, uo) is det, in, di, uo) is det.
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:- mode array_foldl(in, in, pred(in, in, array_di, array_uo) is det, in,
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array_di, array_uo) is det.
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:- mode array_foldl(in, in, pred(in, in, in, out) is det, in, in, out) is det.
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% Performs a foldl2 on all the elements of the given array, starting at
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% index 1.
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%
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:- pred array_foldl2_from_1(pred(int, T, U, U, V, V), array(T), U, U, V, V).
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:- mode array_foldl2_from_1(pred(in, in, di, uo, di, uo) is det,
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in, di, uo, di, uo) is det.
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:- mode array_foldl2_from_1(pred(in, in, array_di, array_uo,
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array_di, array_uo) is det,
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in, array_di, array_uo, array_di, array_uo) is det.
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:- mode array_foldl2_from_1(pred(in, in, array_di, array_uo, in, out) is det,
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in, array_di, array_uo, in, out) is det.
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:- mode array_foldl2_from_1(pred(in, in, in, out, di, uo) is det,
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in, in, out, di, uo) is det.
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:- mode array_foldl2_from_1(pred(in, in, in, out, in, out) is det,
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in, in, out, in, out) is det.
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% Performs a foldl2 on all the elements of the given array between the two
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% index values given by the first two arguments, both inclusive.
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%
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:- pred array_foldl2(int, int, pred(int, T, U, U, V, V), array(T), U, U, V, V).
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:- mode array_foldl2(in, in, pred(in, in, di, uo, di, uo) is det, in,
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di, uo, di, uo) is det.
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:- mode array_foldl2(in, in, pred(in, in,
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array_di, array_uo, array_di, array_uo) is det, in,
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array_di, array_uo, array_di, array_uo) is det.
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:- mode array_foldl2(in, in, pred(in, in,
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array_di, array_uo, in, out) is det, in,
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array_di, array_uo, in, out) is det.
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:- mode array_foldl2(in, in, pred(in, in, in, out, di, uo) is det, in,
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in, out, di, uo) is det.
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:- mode array_foldl2(in, in, pred(in, in, in, out, in, out) is det, in,
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in, out, in, out) is det.
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% Performs the same computation as list.foldl; the only difference is
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% that the accumulator is an array and has an array mode.
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%
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:- pred array_list_foldl(pred(T, array(U), array(U)), list(T),
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array(U), array(U)).
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:- mode array_list_foldl(pred(in, array_di, array_uo) is det, in,
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array_di, array_uo) is det.
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% Performs the same computation as list.foldl2; the only difference is
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% that the accumulators are arrays and have array modes.
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%
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:- pred array_list_foldl2(pred(T, array(U), array(U), array(V), array(V)),
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list(T), array(U), array(U), array(V), array(V)).
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:- mode array_list_foldl2(pred(in, array_di, array_uo, array_di, array_uo)
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is det, in, array_di, array_uo, array_di, array_uo) is det.
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% Performs a map on all the elements of the given array, starting at index
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% 0.
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%
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:- pred array_map_from_0(pred(T, T), array(T), array(T)).
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:- mode array_map_from_0(pred(in, out) is det, array_di, array_uo) is det.
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% Performs a map on all the elements of the given array, starting at index
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% 1.
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%
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:- pred array_map_from_1(pred(T, T), array(T), array(T)).
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:- mode array_map_from_1(pred(in, out) is det, array_di, array_uo) is det.
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%-----------------------------------------------------------------------------%
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%-----------------------------------------------------------------------------%
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:- implementation.
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:- import_module int.
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%-----------------------------------------------------------------------------%
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:- pragma foreign_proc("C",
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u(A::in) = (B::array_uo),
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[will_not_call_mercury, thread_safe, promise_pure],
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"
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B = A;
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").
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array_foldl_from_1(P, A, !AccU) :-
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array.max(A, Max),
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array_foldl(1, Max, P, A, !AccU).
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array_foldl_from_0(P, A, !AccU) :-
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array.max(A, Max),
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array_foldl(0, Max, P, A, !AccU).
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array_foldl(N, Max, P, A, !AccU) :-
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( N =< Max ->
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array.lookup(A, N, E),
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P(N, E, !AccU),
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array_foldl(N + 1, Max, P, A, !AccU)
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;
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true
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).
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array_foldl2_from_1(P, A, !AccU, !AccV) :-
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array.max(A, Max),
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array_foldl2(1, Max, P, A, !AccU, !AccV).
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array_foldl2(N, Max, P, A, !AccU, !AccV) :-
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( N =< Max ->
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array.lookup(A, N, E),
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P(N, E, !AccU, !AccV),
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array_foldl2(N + 1, Max, P, A, !AccU, !AccV)
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;
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true
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).
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array_list_foldl(_, [], !Acc).
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array_list_foldl(P, [X | Xs], !Acc) :-
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P(X, !Acc),
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array_list_foldl(P, Xs, !Acc).
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array_list_foldl2(_, [], !AccU, !AccV).
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array_list_foldl2(P, [X | Xs], !AccU, !AccV) :-
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P(X, !AccU, !AccV),
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array_list_foldl2(P, Xs, !AccU, !AccV).
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array_map_from_0(P, !AccU) :-
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array.max(!.AccU, Max),
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array_map(0, Max, P, !AccU).
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array_map_from_1(P, !AccU) :-
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array.max(!.AccU, Max),
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array_map(1, Max, P, !AccU).
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:- pred array_map(int, int, pred(T, T), array(T), array(T)).
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:- mode array_map(in, in, pred(in, out) is det, array_di, array_uo) is det.
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array_map(N, Size, Closure, !Array) :-
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( N >= Size ->
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true
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;
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array.lookup(!.Array, N, OldElem),
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Closure(OldElem, NewElem),
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array.set(!.Array, N, NewElem, !:Array),
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array_map(N + 1, Size, Closure, !Array)
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).
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%-----------------------------------------------------------------------------%
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:- end_module array_util.
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%-----------------------------------------------------------------------------%
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