lean2/src/library/substitution.h

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/*
Copyright (c) 2013 Microsoft Corporation. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Author: Leonardo de Moura
*/
#pragma once
#include "util/lua.h"
#include "util/splay_map.h"
#include "util/name.h"
#include "kernel/expr.h"
#include "kernel/metavar.h"
namespace lean {
/**
\brief Simpler version of metavar_env.
It is used in fo_unify
*/
typedef splay_map<name, expr, name_quick_cmp> substitution;
/**
\brief Apply substitution \c s to \c e
*/
expr apply(substitution & s, expr const & e, optional<metavar_env> const & menv = none_menv());
inline expr apply(substitution & s, expr const & e, metavar_env const & menv) { return apply(s, e, some_menv(menv)); }
expr find(substitution & s, expr e);
UDATA_DEFS_CORE(substitution)
void open_substitution(lua_State * L);
}