mirror of
https://github.com/Mercury-Language/mercury.git
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2ff6b119ef
library/string.m:
Fix string.all_match to fail if the string being tested contains
any ill-formed code unit sequences.
Fix the Mercury implementation of string.contains_char to continue
searching for the character past any ill-formed code unit sequences.
The foreign code implementations already did so.
Fix unsafe_index_next_repl and unsafe_prev_index_repl in C grades.
We indexed the C string with `ReplacedCodeUnit = Str[Index]' but
since Mercury strings have the C type `char *', ReplacedCodeUnit
could take on a negative value. When ReplacedCodeUnit == -1,
the caller would assume there is a valid encoding of a code point
beginning at Index, and therefore return `not_replaced' instead of
`replaced_code_unit(255)'.
Add casts to `unsigned char' in other places where we index C
strings.
Clarify documentation.
Document that string.duplicate_char may throw an exception.
tests/hard_coded/string_all_match.m:
tests/hard_coded/string_all_match.exp:
tests/hard_coded/string_all_match.exp2:
Add test for string.all_match.
tests/hard_coded/contains_char_2.m:
tests/hard_coded/contains_char_2.exp:
Delete older test case for string.contains_char.
tests/hard_coded/string_contains_char.m:
tests/hard_coded/string_contains_char.exp:
tests/hard_coded/string_contains_char.exp2:
Add better test for string.contains_char.
tests/hard_coded/Mmakefile:
Enable the tests.
NEWS:
Announce the changes.
62 lines
2.0 KiB
Mathematica
62 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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% A test of string.all_match/2.
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%
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% The .exp file is for C and C# grades.
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% The .exp2 file is for Java grades.
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%
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%---------------------------------------------------------------------------%
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:- module string_all_match.
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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 char.
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:- import_module int.
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:- import_module list.
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:- import_module string.
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%---------------------------------------------------------------------------%
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main(!IO) :-
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test_all_match(is_alpha, "is_alpha", "", !IO),
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test_all_match(is_alpha, "is_alpha", "abc", !IO),
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test_all_match(is_alpha, "is_alpha", "abc123", !IO),
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test_all_match(is_chess_piece, "is_chess_piece", "♜♞♝♛♚♝♞♜", !IO),
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test_all_match(is_chess_piece, "is_chess_piece", "♜♞♝♛K♝♞♜", !IO),
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Ilseq = string.between("😀", 0, 1),
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S = "abc" ++ Ilseq ++ "def",
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test_all_match(is_alpha, "is_alpha", S, !IO).
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:- pred test_all_match(pred(char)::in(pred(in) is semidet),
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string::in, string::in, io::di, io::uo) is det.
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test_all_match(Pred, PredName, String, !IO) :-
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( if string.all_match(Pred, String) then
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Result = "true"
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else
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Result = "false"
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),
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io.format("all_match(%s, %s) ==> %s.\n",
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[s(PredName), s(string(String)), s(Result)], !IO).
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:- pred is_chess_piece(char::in) is semidet.
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is_chess_piece(Char) :-
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char.to_int(Char, CodePoint),
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CodePoint >= 0x2654, CodePoint =< 0x265F.
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%---------------------------------------------------------------------------%
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:- end_module string_all_match.
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%---------------------------------------------------------------------------%
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