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/* Generic plugin context
Copyright (C) 2020-2022 Free Software Foundation, Inc.
This file is part of GCC.
GCC 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, or (at your option) any later
version.
GCC 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 GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#ifndef CC1_PLUGIN_CONTEXT_HH
#define CC1_PLUGIN_CONTEXT_HH
#include "system.h"
#include "coretypes.h"
#include "tree.h"
#include "connection.hh"
namespace cc1_plugin
{
static inline unsigned long long
convert_out (tree t)
{
return (unsigned long long) (uintptr_t) t;
}
static inline tree
convert_in (unsigned long long v)
{
return (tree) (uintptr_t) v;
}
struct decl_addr_value
{
tree decl;
tree address;
};
struct decl_addr_hasher : free_ptr_hash<decl_addr_value>
{
static hashval_t hash (const decl_addr_value *e)
{
return DECL_UID (e->decl);
}
static bool equal (const decl_addr_value *p1,
const decl_addr_value *p2)
{
return p1->decl == p2->decl;
}
};
struct string_hasher : nofree_ptr_hash<const char>
{
static inline hashval_t hash (const char *s)
{
return htab_hash_string (s);
}
static inline bool equal (const char *p1, const char *p2)
{
return strcmp (p1, p2) == 0;
}
};
struct plugin_context : public cc1_plugin::connection
{
plugin_context (int fd)
: cc1_plugin::connection (fd),
address_map (30),
preserved (30),
file_names (30)
{
}
// Map decls to addresses.
hash_table<decl_addr_hasher> address_map;
// A collection of trees that are preserved for the GC.
hash_table< nofree_ptr_hash<tree_node> > preserved;
// File name cache.
hash_table<string_hasher> file_names;
// Perform GC marking.
void mark ();
// Preserve a tree during the plugin's operation.
tree preserve (tree t)
{
tree_node **slot = preserved.find_slot (t, INSERT);
*slot = t;
return t;
}
location_t get_location_t (const char *filename,
unsigned int line_number);
private:
// Add a file name to FILE_NAMES and return the canonical copy.
const char *intern_filename (const char *filename);
};
extern plugin_context *current_context;
void generic_plugin_init (struct plugin_name_args *plugin_info,
unsigned int version);
}
#endif // CC1_PLUGIN_CONTEXT_HH
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