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92 lines
2.6 KiB
Mathematica
92 lines
2.6 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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% Test string prefix- and suffix-related predicates.
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%
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:- module string_presuffix.
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:- interface.
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:- import_module io.
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:- pred main(io::di, io::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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:- import_module list.
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:- import_module solutions.
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:- import_module string.
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%---------------------------------------------------------------------------%
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main(!IO) :-
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Str = "aßξ啕𐀀.",
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io.write_string("prefix(in, in):\n", !IO),
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( if
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string.prefix(Str, ""),
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string.prefix(Str, "a"),
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string.prefix(Str, "aß"),
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string.prefix(Str, "aßξ"),
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string.prefix(Str, "aßξ啕"),
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string.prefix(Str, "aßξ啕𐀀"),
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string.prefix(Str, "aßξ啕𐀀."),
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not string.prefix(Str, "aßξ啕𐀀.z")
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then
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io.write_string("pass\n", !IO)
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else
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io.write_string("fail\n", !IO)
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),
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io.write_string("\nprefix(in, out):\n", !IO),
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solutions(pred(Pre::out) is multi :- string.prefix(Str, Pre), Prefixes),
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io.write(Prefixes, !IO),
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io.nl(!IO),
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io.write_string("\nsuffix(in, in):\n", !IO),
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( if
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not string.suffix(Str, "aßξ啕𐀀.z"),
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string.suffix(Str, "aßξ啕𐀀."),
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string.suffix(Str, "ßξ啕𐀀."),
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string.suffix(Str, "ξ啕𐀀."),
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string.suffix(Str, "啕𐀀."),
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string.suffix(Str, "𐀀."),
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string.suffix(Str, "."),
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string.suffix(Str, "")
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then
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io.write_string("pass\n", !IO)
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else
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io.write_string("fail\n", !IO)
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),
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io.write_string("\nsuffix(in, out):\n", !IO),
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solutions(pred(Suf::out) is multi :- string.suffix(Str, Suf), Suffixes),
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io.write(Suffixes, !IO),
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io.nl(!IO),
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io.write_string("\nremove_prefix:\n", !IO),
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( if
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string.remove_prefix(Str, Str, ""),
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string.remove_prefix("aßξ", Str, "啕𐀀."),
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not string.remove_prefix("☿", Str, Str)
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then
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io.write_string("pass\n", !IO)
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else
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io.write_string("fail\n", !IO)
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),
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io.write_string("\nremove_suffix:\n", !IO),
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( if
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string.remove_suffix(Str, Str, ""),
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string.remove_suffix(Str, "啕𐀀.", "aßξ"),
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not string.remove_suffix(Str, "☿", Str)
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then
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io.write_string("pass\n", !IO)
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else
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io.write_string("fail\n", !IO)
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).
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