library/string.m:
Define string.between_codepoints in terms of codepoint_offset.
Fix behaviour in the case where
Start < 0,
End < 0,
End > Start
tests/hard_coded/string_codepoint.exp:
tests/hard_coded/string_codepoint.exp2:
tests/hard_coded/string_codepoint.m:
Extend test case.
library/string.m:
Fix string.between_codepoints so that the clamping of start/end
points works as documented.
tests/hard_coded/string_codepoint.m
tests/hard_coded/string_codepoint.exp
tests/hard_coded/string_codepoint.exp2
Improve test case.
NEWS:
Mention fix.
tests/accumulator/*.m:
tests/analysis_*/*.m:
tests/benchmarks*/*.m:
tests/debugger*/*.{m,exp,inp}:
tests/declarative_debugger*/*.{m,exp,inp}:
tests/dppd*/*.m:
tests/exceptions*/*.m:
tests/general*/*.m:
tests/grade_subdirs*/*.m:
tests/hard_coded*/*.m:
Make these tests use four-space indentation, and ensure that
each module is imported on its own line. (I intend to use the latter
to figure out which subdirectories' tests can be executed in parallel.)
These changes usually move code to different lines. For the debugger tests,
specify the new line numbers in .inp files and expect them in .exp files.
Branches: main
Deprecate string.substring, string.foldl_substring, etc. in favour of
new procedures named string.between, string.foldl_between, etc.
The "between" procedures take a pair of [Start, End) endpoints instead
of Start, Count arguments. The reasons for this change are:
- the "between" procedures are more convenient
- "between" should be unambiguous. You can guess that it takes an End
argument instead of a Count argument without looking up the manual.
- Count arguments necessarily counted code units, but when working with
non-ASCII strings, almost the only way that the values would be arrived at
is by substracting one end point from another.
- it paves the way for a potential change to replace string offsets with an
abstract type. We cannot do that if users regularly have to perform a
subtraction between two offsets.
library/string.m:
Add string.foldl_between, string.foldl2_between,
string.foldr_between, string.between.
Deprecate the old substring names.
Replace string.substring_by_codepoint by string.between_codepoints.
compiler/elds_to_erlang.m:
compiler/error_util.m:
compiler/rbmm.live_variable_analysis.m:
compiler/timestamp.m:
extras/posix/samples/mdprof_cgid.m:
library/bitmap.m:
library/integer.m:
library/lexer.m:
library/parsing_utils.m:
mdbcomp/trace_counts.m:
profiler/demangle.m:
Conform to changes.
tests/general/Mercury.options:
tests/general/string_foldl_substring.exp:
tests/general/string_foldl_substring.m:
tests/general/string_foldr_substring.exp:
tests/general/string_foldr_substring.m:
tests/hard_coded/Mercury.options:
tests/hard_coded/string_substring.m:
Test both between and substring procedures.
tests/hard_coded/string_codepoint.exp:
tests/hard_coded/string_codepoint.exp2:
tests/hard_coded/string_codepoint.m:
Update names in test outputs.
NEWS:
Announce the change.
Branches: main
Improve Unicode support.
Declare that we use the Unicode character set, and UTF-8 or UTF-16 for the
internal string representation (depending on the backend). User code may be
written to those assumptions. Other external encodings can be supported in
the future by translating to/from Unicode internally.
The `char' type now represents a Unicode code point.
NOTE: questions about how to handle unpaired surrogate code points, etc. have
been left for later.
library/char.m:
Define a `char' to be a Unicode code point and extend ranges
appropriately.
Add predicates: to_utf8, to_utf16, is_surrogate, is_noncharacter.
Update some documentation.
library/io.m:
Declare I/O predicates on text streams to read/write code points, not
ambiguous "characters". Text files are expected to use UTF-8 encoding.
Supporting other encodings is for future work.
Update the C and Erlang implementations to understand UTF-8 encoding.
Update Java and C# implementations to read/write code points (Mercury
char) instead of UTF-16 code units.
Add `may_not_duplicate' attributes to some foreign_procs.
Improve Erlang implementations of seeking and getting the stream size.
library/string.m:
Declare the string representations, as described earlier.
Distinguish between code units and code points everywhere.
Existing functions and predicates which take offset and length
arguments continue to take them in terms of code units.
Add procedures: count_code_units, count_codepoints, codepoint_offset,
to_code_unit_list, from_code_unit_list, index_next, unsafe_index_next,
unsafe_prev_index, unsafe_index_code_unit, split_by_codepoint,
left_by_codepoint, right_by_codepoint, substring_by_codepoint.
Make index, index_det call error/1 if an illegal sequence is detected,
as they already do for invalid offsets.
Clarify that is_all_alpha, is_all_alnum_or_underscore,
is_alnum_or_underscore only succeed for the ASCII characters under each
of those categories.
Clarify that whitespace stripping functions only strip whitespace
characters in the ASCII range.
Add comments about the future treatment of surrogate code points
(not yet implemented).
Use Mercury format implementation when necessary instead of `sprintf'.
The %c specifier does not work for code points which require multi-byte
representation. The field width modifier for %s only works if the
string contains only single-byte code points.
library/lexer.m:
Conform to string encoding changes.
Simplify code dealing with \uNNNN escapes now that encoding/decoding
is handled by the string module.
library/term_io.m:
Allow code points above 126 directly in Mercury source.
NOTE: \x and \o codes are treated as code points by this change.
runtime/mercury_types.h:
Redefine `MR_Char' to be `int' to hold a Unicode code point.
`MR_String' has to be defined as a pointer to `char' instead of a
pointer to `MR_Char'. Some C foreign code will be affected by this
change.
runtime/mercury_string.c:
runtime/mercury_string.h:
Add UTF-8 helper routines and macros.
Make hash routines conform to type changes.
compiler/c_util.m:
Fix output_quoted_string_lang so that it correctly outputs non-ASCII
characters for each of the target languages.
Fix quote_char for non-ASCII characters.
compiler/elds_to_erlang.m:
Write out code points above 126 normally instead of using escape
syntax.
Conform to string encoding changes.
compiler/mlds_to_cs.m:
Change Mercury `char' to be represented by C# `int'.
compiler/mlds_to_java.m:
Change Mercury `char' to be represented by Java `int'.
doc/reference_manual.texi:
Uncomment description of \u and \U escapes in string literals.
Update description of C# and Java representations for Mercury `char'
which are now `int'.
tests/debugger/tailrec1.m:
Conform to renaming.
tests/general/string_replace.exp:
tests/general/string_replace.m:
Test non-ASCII characters to string.replace.
tests/general/string_test.exp:
tests/general/string_test.m:
Test non-ASCII characters to string.duplicate_char,
string.pad_right, string.pad_left, string.format_table.
tests/hard_coded/char_unicode.exp:
tests/hard_coded/char_unicode.m:
Add test for new procedures in `char' module.
tests/hard_coded/contains_char_2.m:
Test non-ASCII characters to string.contains_char.
tests/hard_coded/nonascii.exp:
tests/hard_coded/nonascii.m:
tests/hard_coded/nonascii_gen.c:
Add code points above 255 to this test case.
Change test data encoding to UTF-8.
tests/hard_coded/string_class.exp:
tests/hard_coded/string_class.m:
Add test case for string.is_alpha, etc.
tests/hard_coded/string_codepoint.exp:
tests/hard_coded/string_codepoint.exp2:
tests/hard_coded/string_codepoint.m:
Add test case for new string procedures dealing with code points.
tests/hard_coded/string_first_char.exp:
tests/hard_coded/string_first_char.m:
Add test case for all modes of string.first_char.
tests/hard_coded/string_hash.m:
Don't use buggy random.random/5 predicate which can overflow on
a large range (such as the range of code points).
tests/hard_coded/string_presuffix.exp:
tests/hard_coded/string_presuffix.m:
Add test case for string.prefix, string.suffix, etc.
tests/hard_coded/string_set_char.m:
Test non-ASCII characters to string.set_char.
tests/hard_coded/string_strip.exp:
tests/hard_coded/string_strip.m:
Test non-ASCII characters to string stripping procedures.
tests/hard_coded/string_sub_string_search.m:
Test non-ASCII characters to string.sub_string_search.
tests/hard_coded/unicode_test.exp:
Update expected output due to change of behaviour of
`string.to_char_list'.
tests/hard_coded/unicode_test.m:
Test non-ASCII character in separator string argument to
string.join_list.
tests/hard_coded/utf8_io.exp:
tests/hard_coded/utf8_io.m:
Add tests for UTF-8 I/O.
tests/hard_coded/words_separator.exp:
tests/hard_coded/words_separator.m:
Add test case for `string.words_separator'.
tests/hard_coded/Mmakefile:
Add new test cases.
Make special_char test case run on all backends.
tests/hard_coded/special_char.exp:
tests/valid/mercury_java_parser_follow_code_bug.m:
Reencode these files in UTF-8.
NEWS:
Add a news entry.
