On 5/28/25 4:10 AM, Alfie Richards wrote:
The string_slice inherits from array_slice and is used to refer to a
substring of an array that is memory managed elsewhere without modifying
the underlying array.
For example, this is useful in cases such as when needing to refer to a
substring of an attribute in the syntax tree.
Adds some minimal helper functions for string_slice,
such as a strtok alternative, equality operators, strcmp, and a function
to strip whitespace from the beginning and end of a string_slice.
gcc/c-family/ChangeLog:
* c-format.cc (local_string_slice_node): New node type.
(asm_fprintf_char_table): New entry.
(init_dynamic_diag_info): Add support for string_slice.
* c-format.h (T_STRING_SLICE): New node type.
gcc/ChangeLog:
* pretty-print.cc (format_phase_2): Add support for string_slice.
* vec.cc (string_slice::tokenize): New method.
(strcmp): New implementation for string_slice.
(string_slice::strip): New method.
(test_string_slice_initializers): New test.
(test_string_slice_tokenize): Ditto.
(test_string_slice_strcmp): Ditto.
(test_string_slice_equality): Ditto.
(test_string_slice_inequality): Ditto.
(test_string_slice_invalid): Ditto.
(test_string_slice_strip): Ditto.
(vec_cc_tests): Add new tests.
* vec.h (class string_slice): New class.
(strcmp): New implementation for stirng_slice.
Implementation itself is fine. However each function/method should have
a block comment indicating what the function does, including brief
descriptions of its inputs and return value.
Pre-approved after adding the appropriate function comments.
jeff
ps. Thanks for adding testcases for the behavior of this new code.
It's greatly appreciated.
