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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.
7 lines
281 B
Plaintext
7 lines
281 B
Plaintext
all_match(is_alpha, "") ==> true.
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all_match(is_alpha, "abc") ==> true.
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all_match(is_alpha, "abc123") ==> false.
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all_match(is_chess_piece, "♜♞♝♛♚♝♞♜") ==> true.
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all_match(is_chess_piece, "♜♞♝♛K♝♞♜") ==> false.
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all_match(is_alpha, "abc?def") ==> false.
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