lean2/src/library/hott_kernel.cpp

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/*
Copyright (c) 2014 Microsoft Corporation. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Author: Leonardo de Moura
*/
#include "kernel/inductive/inductive.h"
#include "kernel/record/record.h"
#include "library/inductive_unifier_plugin.h"
namespace lean {
using inductive::inductive_normalizer_extension;
using record::record_normalizer_extension;
/** \brief Create a HoTT (Homotopy Type Theory) compatible environment */
environment mk_hott_environment(unsigned trust_lvl) {
environment env = environment(trust_lvl,
false /* Type.{0} is proof relevant */,
true /* Eta */,
false /* Type.{0} is predicative */,
list<name>(name("Id")) /* Exact equality types are proof irrelevant */,
/* builtin support for inductive and record datatypes */
compose(std::unique_ptr<normalizer_extension>(new inductive_normalizer_extension()),
std::unique_ptr<normalizer_extension>(new record_normalizer_extension())));
return set_unifier_plugin(env, mk_inductive_unifier_plugin());
}
}