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511ce02041
in polymorphism.m for third-order functions. tests/hard_coded: Add a regression test curry.m to check for the above-mentioned bug.
39 lines
1.0 KiB
Mathematica
39 lines
1.0 KiB
Mathematica
% Test curried functions.
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% This is a regression test: mercury-0.6 failed this test.
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:- module curry.
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:- interface.
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:- import_module io.
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:- pred main(io__state::di, io__state::uo) is det.
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:- implementation.
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:- import_module list, int.
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main -->
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io__write_string("Hello, world\n"),
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{ _ = map(curry2(append), [[1],[2],[3]]) },
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{ _ = map(curry2(plus), [1,2,3]) }.
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:- func append(list(T), list(T)) = list(T).
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append(A, B) = C :- list__append(A, B, C).
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:- inst func1 = (func(in) = out is det).
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:- func curry2(func(T1, T2) = T3) = (func(T1) = (func(T2) = T3)).
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:- mode curry2(func(in, in) = out is det) =
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out(func(in) = out(func(in) = out is det) is det).
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curry2(F) = ((func(X::in) = (F1::out((func(in) = out is det))) is det) :-
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F1 = (func(Y) = apply(F, X, Y))).
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:- func plus(int, int) = int.
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plus(A, B) = A + B.
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:- func map(func(T1) = T2, list(T1)) = list(T2).
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% :- mode map(func(in) = out is det, in) = out is det.
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:- mode map(func(in) = out(func(in) = out is det) is det, in) = out is det.
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map(_F, []) = [].
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map(F, [X|Xs]) = [apply(F,X)|map(F, Xs)].
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