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 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;
}
}