static declaration update_declaration(declaration d, optional<level_param_names> const & ps,
optional<expr> const & type, optional<expr> const & value) {
level_param_names _ps = ps ? *ps : d.get_univ_params();
expr _type = type ? *type : d.get_type();
expr _value;
if (d.is_definition()) {
_value = value ? *value : d.get_value();
} else {
lean_assert(!value);
}
if (d.is_constant_assumption()) {
if (is_eqp(d.get_type(), _type) && is_eqp(d.get_univ_params(), _ps))
return d;
if (d.is_axiom())
return mk_axiom(d.get_name(), _ps, _type);
else
return mk_constant_assumption(d.get_name(), _ps, _type);
} else {
if (is_eqp(d.get_type(), _type) && is_eqp(d.get_value(), _value) && is_eqp(d.get_univ_params(), _ps))
return d;
if (d.is_theorem())
return mk_theorem(d.get_name(), _ps, _type, _value, d.get_height());
else
return mk_definition(d.get_name(), _ps, _type, _value,
d.get_height(), d.use_conv_opt());
}
}
declaration sanitize_level_params(declaration const & d) {
name_set globals;
collect_global_levels(d.get_type(), globals);
if (d.is_definition())
collect_global_levels(d.get_value(), globals);
if (globals.empty())
return d;
name_map<name> param_name_map;
level_param_names new_ls = sanitize_level_params(d.get_univ_params(), globals, param_name_map);
if (param_name_map.empty())
return d;
expr new_type = rename_param_levels(d.get_type(), param_name_map);
if (d.is_constant_assumption()) {
return update_declaration(d, new_ls, new_type);
} else {
expr new_value = rename_param_levels(d.get_value(), param_name_map);
return update_declaration(d, new_ls, new_type, new_value);
}
}
environment operator()(declaration const & d) {
expr v = d.get_value();
v = expand_aux_recursors(m_env, v);
v = eta_expand(m_env, v);
v = simp_pr1_rec(m_env, v);
::pp(m_env, v);
// TODO(Leo)
check(d, v);
return m_env;
}
declaration unfold_untrusted_macros(environment const & env, declaration const & d, optional<unsigned> const & trust_lvl) {
if (!trust_lvl || contains_untrusted_macro(*trust_lvl, d)) {
expr new_t = unfold_untrusted_macros(env, d.get_type(), trust_lvl);
if (d.is_theorem()) {
expr new_v = unfold_untrusted_macros(env, d.get_value(), trust_lvl);
return mk_theorem(d.get_name(), d.get_univ_params(), new_t, new_v);
} else if (d.is_definition()) {
expr new_v = unfold_untrusted_macros(env, d.get_value(), trust_lvl);
return mk_definition(d.get_name(), d.get_univ_params(), new_t, new_v,
d.get_hints(), d.is_trusted());
} else if (d.is_axiom()) {
return mk_axiom(d.get_name(), d.get_univ_params(), new_t);
} else if (d.is_constant_assumption()) {
return mk_constant_assumption(d.get_name(), d.get_univ_params(), new_t);
} else {
lean_unreachable();
}
} else {
return d;
}
}
bool contains_untrusted_macro(unsigned trust_lvl, declaration const & d) {
if (contains_untrusted_macro(trust_lvl, d.get_type()))
return true;
return (d.is_definition() || d.is_theorem()) && contains_untrusted_macro(trust_lvl, d.get_value());
}
static bool contains_untrusted_macro(unsigned trust_lvl, declaration const & d) {
if (trust_lvl > LEAN_BELIEVER_TRUST_LEVEL)
return false;
if (contains_untrusted_macro(trust_lvl, d.get_type()))
return true;
return (d.is_definition() || d.is_theorem()) && contains_untrusted_macro(trust_lvl, d.get_value());
}
static bool contains_untrusted_macro(unsigned trust_lvl, declaration const & d) {
#if defined(LEAN_ALL_MACROS_HAVE_SMALL_TRUST_LVL)
if (trust_lvl > LEAN_BELIEVER_TRUST_LEVEL) return false;
#endif
if (!d.is_trusted())
return false;
if (contains_untrusted_macro(trust_lvl, d.get_type()))
return true;
return (d.is_definition() || d.is_theorem()) && contains_untrusted_macro(trust_lvl, d.get_value());
}
void print_axioms(declaration const & decl) {
print_axioms(decl.get_type());
if (decl.is_definition()) print_axioms(decl.get_value());
}
void print_decl(declaration const & d) {
format fn = compose_many({simple_pp(d.get_name()), space(), format(":"), space(), pp(d.get_type())});
if (d.is_definition() && !d.is_theorem()) {
m_out << compose_many({format("def"), space(), fn, space(), format(":="), line(), pp(d.get_value()), line()});
} else {
format cmd(d.is_theorem() ? "theorem" : (d.is_axiom() ? "axiom" : "constant"));
m_out << compose_many({cmd, space(), fn, line()});
}
}
