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/* Support for plugin-supplied behaviors of known functions.
Copyright (C) 2022-2023 Free Software Foundation, Inc.
Contributed by David Malcolm <dmalcolm@redhat.com>.
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 GCC_ANALYZER_KNOWN_FUNCTION_MANAGER_H
#define GCC_ANALYZER_KNOWN_FUNCTION_MANAGER_H
#include "analyzer/analyzer-logging.h"
namespace ana {
/* Instances of known_function are registered with the known_function_manager
when the analyzer starts.
The known_function_manager has responsibility for determining which
known_function instance (if any) is relevant at a call site, by checking
name or id, and by calling known_function::matches_call_types_p to ensure
that the known_function's preconditions hold (typically assumptions about
types e.g. that "has 3 args, and that arg 0 is of pointer type").
The known_function subclasses themselves have responsibility for
determining the outcome(s) of the call. */
class known_function_manager : public log_user
{
public:
known_function_manager (logger *logger);
~known_function_manager ();
void add (const char *name, std::unique_ptr<known_function> kf);
void add (enum built_in_function name, std::unique_ptr<known_function> kf);
void add (enum internal_fn ifn, std::unique_ptr<known_function> kf);
const known_function *get_match (tree fndecl, const call_details &cd) const;
const known_function *get_internal_fn (enum internal_fn) const;
private:
DISABLE_COPY_AND_ASSIGN (known_function_manager);
const known_function *get_normal_builtin (enum built_in_function name) const;
const known_function *get_by_identifier (tree identifier) const;
/* Map from identifier to known_function instance.
Has ownership of the latter. */
hash_map<tree, known_function *> m_map_id_to_kf;
/* Array of known builtins. */
known_function *m_combined_fns_arr[CFN_LAST];
};
extern std::unique_ptr<known_function> make_kf_strlen ();
} // namespace ana
#endif /* GCC_ANALYZER_KNOWN_FUNCTION_MANAGER_H */
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