gdb/dwarf: move cooked_index_storage to cooked-index-storage.{h,c}

cooked_index_storage is currently declared in `cooked-index.h` and
implemented in `read.c`.  Move all that to new
`cooked-index-storage.{h,c}` files.

Change-Id: I2a07eb446d8a07b15c5664dfe01e3a820cdd45be
Approved-By: Tom Tromey <tom@tromey.com>

1 files changed, 115 insertions, 0 deletions

diff --git a/gdb/dwarf2/cooked-index-storage.h b/gdb/dwarf2/cooked-index-storage.h
new file mode 100644
index 0000000..3d0b5b2
--- /dev/null
+++ b/gdb/dwarf2/cooked-index-storage.h
@@ -0,0 +1,115 @@
+/* DWARF index storage
+
+   Copyright (C) 2022-2025 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_COOKED_INDEX_STORAGE_H
+#define GDB_DWARF2_COOKED_INDEX_STORAGE_H
+
+#include "dwarf2/abbrev-table-cache.h"
+#include "dwarf2/cooked-index.h"
+#include "dwarf2/types.h"
+
+struct cutu_reader;
+struct dwarf2_per_cu;
+
+using cutu_reader_up = std::unique_ptr<cutu_reader>;
+
+/* An instance of this is created when scanning DWARF to create a
+   cooked index.  */
+
+class cooked_index_storage
+{
+public:
+
+  cooked_index_storage ();
+  DISABLE_COPY_AND_ASSIGN (cooked_index_storage);
+
+  /* Return the current abbrev table_cache.  */
+  const abbrev_table_cache &get_abbrev_table_cache () const
+  { return m_abbrev_table_cache; }
+
+  /* Return the DIE reader corresponding to PER_CU.  If no such reader
+     has been registered, return NULL.  */
+  cutu_reader *get_reader (dwarf2_per_cu *per_cu);
+
+  /* Preserve READER by storing it in the local hash table.  */
+  cutu_reader *preserve (cutu_reader_up reader);
+
+  /* Add an entry to the index.  The arguments describe the entry; see
+     cooked-index.h.  The new entry is returned.  */
+  cooked_index_entry *add (sect_offset die_offset, enum dwarf_tag tag,
+			   cooked_index_flag flags,
+			   const char *name,
+			   cooked_index_entry_ref parent_entry,
+			   dwarf2_per_cu *per_cu)
+  {
+    return m_shard->add (die_offset, tag, flags, per_cu->lang (),
+			 name, parent_entry, per_cu);
+  }
+
+  /* Install the current addrmap into the shard being constructed,
+     then transfer ownership of the index to the caller.  */
+  cooked_index_shard_up release ()
+  {
+    m_shard->install_addrmap (&m_addrmap);
+    return std::move (m_shard);
+  }
+
+  /* Return the mutable addrmap that is currently being created.  */
+  addrmap_mutable *get_addrmap ()
+  {
+    return &m_addrmap;
+  }
+
+  /* Return the parent_map that is currently being created.  */
+  parent_map *get_parent_map ()
+  {
+    return &m_parent_map;
+  }
+
+  /* Return the parent_map that is currently being created.  Ownership
+     is passed to the caller.  */
+  parent_map release_parent_map ()
+  {
+    return std::move (m_parent_map);
+  }
+
+private:
+
+  /* Hash function for a cutu_reader.  */
+  static hashval_t hash_cutu_reader (const void *a);
+
+  /* Equality function for cutu_reader.  */
+  static int eq_cutu_reader (const void *a, const void *b);
+
+  /* The abbrev table cache used by this indexer.  */
+  abbrev_table_cache m_abbrev_table_cache;
+
+  /* A hash table of cutu_reader objects.  */
+  htab_up m_reader_hash;
+  /* The index shard that is being constructed.  */
+  cooked_index_shard_up m_shard;
+
+  /* Parent map for each CU that is read.  */
+  parent_map m_parent_map;
+
+  /* A writeable addrmap being constructed by this scanner.  */
+  addrmap_mutable m_addrmap;
+};
+
+#endif /* GDB_DWARF2_COOKED_INDEX_STORAGE_H */