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/* Entry in the cooked index
Copyright (C) 2022-2024 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "dwarf2/cooked-index-entry.h"
#include "dwarf2/tag.h"
#include "gdbsupport/gdb-safe-ctype.h"
#include "gdbsupport/selftest.h"
/* See cooked-index-entry.h. */
std::string
to_string (cooked_index_flag flags)
{
static constexpr cooked_index_flag::string_mapping mapping[] = {
MAP_ENUM_FLAG (IS_MAIN),
MAP_ENUM_FLAG (IS_STATIC),
MAP_ENUM_FLAG (IS_LINKAGE),
MAP_ENUM_FLAG (IS_TYPE_DECLARATION),
MAP_ENUM_FLAG (IS_PARENT_DEFERRED),
};
return flags.to_string (mapping);
}
/* See cooked-index-entry.h. */
int
cooked_index_entry::compare (const char *stra, const char *strb,
comparison_mode mode)
{
#if defined (__GNUC__) && !defined (__clang__) && __GNUC__ <= 7
/* Work around error with gcc 7.5.0. */
auto munge = [] (char c) -> unsigned char
#else
auto munge = [] (char c) constexpr -> unsigned char
#endif
{
/* Treat '<' as if it ended the string. This lets something
like "func<t>" match "func<t<int>>". See the "Breakpoints in
template functions" section in the manual. */
if (c == '<')
return '\0';
return TOLOWER ((unsigned char) c);
};
unsigned char a = munge (*stra);
unsigned char b = munge (*strb);
while (a != '\0' && b != '\0' && a == b)
{
a = munge (*++stra);
b = munge (*++strb);
}
if (a == b)
return 0;
/* When completing, if STRB ends earlier than STRA, consider them as
equal. */
if (mode == COMPLETE && b == '\0')
return 0;
return a < b ? -1 : 1;
}
#if GDB_SELF_TEST
namespace {
void
test_compare ()
{
/* Convenience aliases. */
const auto mode_compare = cooked_index_entry::MATCH;
const auto mode_sort = cooked_index_entry::SORT;
const auto mode_complete = cooked_index_entry::COMPLETE;
SELF_CHECK (cooked_index_entry::compare ("abcd", "abcd",
mode_compare) == 0);
SELF_CHECK (cooked_index_entry::compare ("abcd", "abcd",
mode_complete) == 0);
SELF_CHECK (cooked_index_entry::compare ("abcd", "ABCDE",
mode_compare) < 0);
SELF_CHECK (cooked_index_entry::compare ("ABCDE", "abcd",
mode_compare) > 0);
SELF_CHECK (cooked_index_entry::compare ("abcd", "ABCDE",
mode_complete) < 0);
SELF_CHECK (cooked_index_entry::compare ("ABCDE", "abcd",
mode_complete) == 0);
SELF_CHECK (cooked_index_entry::compare ("name", "name<>",
mode_compare) == 0);
SELF_CHECK (cooked_index_entry::compare ("name<>", "name",
mode_compare) == 0);
SELF_CHECK (cooked_index_entry::compare ("name", "name<>",
mode_complete) == 0);
SELF_CHECK (cooked_index_entry::compare ("name<>", "name",
mode_complete) == 0);
SELF_CHECK (cooked_index_entry::compare ("name<arg>", "name<arg>",
mode_compare) == 0);
SELF_CHECK (cooked_index_entry::compare ("name<arg>", "name<ag>",
mode_compare) == 0);
SELF_CHECK (cooked_index_entry::compare ("name<arg>", "name<arg>",
mode_complete) == 0);
SELF_CHECK (cooked_index_entry::compare ("name<arg>", "name<ag>",
mode_complete) == 0);
SELF_CHECK (cooked_index_entry::compare ("name<arg<more>>",
"name<arg<more>>",
mode_compare) == 0);
SELF_CHECK (cooked_index_entry::compare ("name<arg>",
"name<arg<more>>",
mode_compare) == 0);
SELF_CHECK (cooked_index_entry::compare ("name", "name<arg<more>>",
mode_compare) == 0);
SELF_CHECK (cooked_index_entry::compare ("name<arg<more>>", "name",
mode_compare) == 0);
SELF_CHECK (cooked_index_entry::compare ("name<arg<more>>", "name<arg<",
mode_compare) == 0);
SELF_CHECK (cooked_index_entry::compare ("name<arg<more>>", "name<arg<",
mode_complete) == 0);
SELF_CHECK (cooked_index_entry::compare ("", "abcd", mode_compare) < 0);
SELF_CHECK (cooked_index_entry::compare ("", "abcd", mode_complete) < 0);
SELF_CHECK (cooked_index_entry::compare ("abcd", "", mode_compare) > 0);
SELF_CHECK (cooked_index_entry::compare ("abcd", "", mode_complete) == 0);
SELF_CHECK (cooked_index_entry::compare ("func", "func<type>",
mode_sort) == 0);
SELF_CHECK (cooked_index_entry::compare ("func<type>", "func1",
mode_sort) < 0);
}
} /* anonymous namespace */
#endif /* GDB_SELF_TEST */
/* See cooked-index-entry.h. */
bool
cooked_index_entry::matches (domain_search_flags kind) const
{
/* Just reject type declarations. */
if ((flags & IS_TYPE_DECLARATION) != 0)
return false;
return tag_matches_domain (tag, kind, lang);
}
/* See cooked-index-entry.h. */
const char *
cooked_index_entry::full_name (struct obstack *storage,
cooked_index_full_name_flag name_flags,
const char *default_sep) const
{
const char *local_name = ((name_flags & FOR_MAIN) != 0) ? name : canonical;
if ((flags & IS_LINKAGE) != 0 || get_parent () == nullptr)
return local_name;
const char *sep = default_sep;
switch (lang)
{
case language_cplus:
case language_rust:
case language_fortran:
sep = "::";
break;
case language_ada:
if ((name_flags & FOR_ADA_LINKAGE_NAME) != 0)
{
sep = "__";
break;
}
[[fallthrough]];
case language_go:
case language_d:
sep = ".";
break;
default:
if (sep == nullptr)
return local_name;
break;
}
/* The FOR_ADA_LINKAGE_NAME flag should only affect Ada entries, so
disable it here if we don't need it. */
if (lang != language_ada)
name_flags &= ~FOR_ADA_LINKAGE_NAME;
get_parent ()->write_scope (storage, sep, name_flags);
obstack_grow0 (storage, local_name, strlen (local_name));
return (const char *) obstack_finish (storage);
}
/* See cooked-index-entry.h. */
void
cooked_index_entry::write_scope (struct obstack *storage,
const char *sep,
cooked_index_full_name_flag flags) const
{
if (get_parent () != nullptr)
get_parent ()->write_scope (storage, sep, flags);
/* When computing the Ada linkage name, the entry might not have
been canonicalized yet, so use the 'name'. */
const char *local_name = ((flags & (FOR_MAIN | FOR_ADA_LINKAGE_NAME)) != 0
? name
: canonical);
obstack_grow (storage, local_name, strlen (local_name));
obstack_grow (storage, sep, strlen (sep));
}
void _initialize_dwarf2_entry ();
void _initialize_dwarf2_entry ()
{
#if GDB_SELF_TEST
selftests::register_test ("cooked_index_entry::compare", test_compare);
#endif
}
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