8082468ffe
Given that GDB now requires a C++17, replace all uses of gdb::string_view with std::string_view. This change has mostly been done automatically: - gdb::string_view -> std::string_view - #include "gdbsupport/gdb_string_view.h" -> #include <string_view> One things which got brought up during review is that gdb::stging_view does support being built from "nullptr" while std::sting_view does not. Two places are manually adjusted to account for this difference: gdb/tui/tui-io.c:tui_getc_1 and gdbsupport/format.h:format_piece::format_piece. The above automatic change transformed "gdb::to_string (const gdb::string_view &)" into "gdb::to_string (const std::string_view &)". The various direct users of this function are now explicitly including "gdbsupport/gdb_string_view.h". A later patch will remove the users of gdb::to_string. The implementation and tests of gdb::string_view are unchanged, they will be removed in a following patch. Change-Id: Ibb806a7e9c79eb16a55c87c6e41ad396fecf0207 Approved-By: Tom Tromey <tom@tromey.com> Approved-By: Pedro Alves <pedro@palves.net>
70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
/* Things needed for both reading and writing DWARF indices.
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Copyright (C) 1994-2023 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "dwarf2/index-common.h"
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/* See dwarf-index-common.h. */
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hashval_t
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mapped_index_string_hash (int index_version, const void *p)
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{
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const unsigned char *str = (const unsigned char *) p;
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hashval_t r = 0;
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unsigned char c;
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while ((c = *str++) != 0)
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{
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if (index_version >= 5)
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c = tolower (c);
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r = r * 67 + c - 113;
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}
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return r;
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}
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/* See dwarf-index-common.h. */
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uint32_t
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dwarf5_djb_hash (const char *str_)
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{
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const unsigned char *str = (const unsigned char *) str_;
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/* Note: tolower here ignores UTF-8, which isn't fully compliant.
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See http://dwarfstd.org/ShowIssue.php?issue=161027.1. */
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uint32_t hash = 5381;
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while (int c = *str++)
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hash = hash * 33 + tolower (c);
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return hash;
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}
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/* See dwarf-index-common.h. */
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uint32_t
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dwarf5_djb_hash (std::string_view str)
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{
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/* Note: tolower here ignores UTF-8, which isn't fully compliant.
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See http://dwarfstd.org/ShowIssue.php?issue=161027.1. */
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uint32_t hash = 5381;
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for (char c : str)
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hash = hash * 33 + tolower (c & 0xff);
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return hash;
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}
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