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/* Base class for mapped indices
Copyright (C) 2021-2024 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/>. */
#ifndef GDB_DWARF2_MAPPED_INDEX_H
#define GDB_DWARF2_MAPPED_INDEX_H
#include "quick-symbol.h"
class cooked_index;
/* Base class of all DWARF scanner types. */
struct dwarf_scanner_base
{
dwarf_scanner_base () = default;
virtual ~dwarf_scanner_base () = default;
DISABLE_COPY_AND_ASSIGN (dwarf_scanner_base);
/* Return a quick_symbol_functions instance that refers back to this
dwarf_scanner_base. */
virtual quick_symbol_functions_up make_quick_functions () const = 0;
/* An ad hoc version check. This is needed for .gdb_index to check
whether a version 8 or above index is in use. Returns true if
the index is usable, false otherwise. */
virtual bool version_check () const
{
return true;
}
/* This is called when writing an index. For a cooked index, it
will return 'this' as a cooked index. For other forms, it will
throw an exception with an appropriate error message. */
virtual cooked_index *index_for_writing () = 0;
/* Wait for reading of the debuginfo to be completely finished.
This normally has a trivial implementation, but if a subclass
does any background reading, it's needed to ensure that the
reading is completed before destroying the containing per-BFD
object. */
virtual void wait_completely ()
{
}
/* Look up ADDR, and return either the corresponding CU, or nullptr
if the address could not be found. */
virtual dwarf2_per_cu_data *lookup (unrelocated_addr addr)
{ return nullptr; }
};
#endif /* GDB_DWARF2_MAPPED_INDEX_H */
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