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using rewrite in push_app_ite

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-08-23 17:57:03 -07:00
parent f91496f5ff
commit 8b2d60e3ca
5 changed files with 187 additions and 7 deletions
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36
src/ast/simplifier/pull_ite_tree.cpp
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@ -209,5 +209,41 @@ bool pull_cheap_ite_tree_star::is_target(app * n) const {
pull_ite_tree_cfg::pull_ite_tree_cfg(ast_manager & m):
m(m),
m_trail(m),
m_proc(m) {
}
bool pull_ite_tree_cfg::get_subst(expr * n, expr* & r, proof* & p) {
if (is_app(n) && is_target(to_app(n))) {
app_ref tmp(m);
proof_ref pr(m);
m_proc(to_app(n), tmp, pr);
if (tmp != n) {
r = tmp;
p = pr;
m_trail.push_back(r);
m_trail.push_back(p);
return true;
}
}
return false;
}
bool pull_cheap_ite_tree_cfg::is_target(app * n) const {
bool r =
n->get_num_args() == 2 &&
n->get_family_id() != null_family_id &&
m.is_bool(n) &&
(m.is_value(n->get_arg(0)) || m.is_value(n->get_arg(1))) &&
(m.is_term_ite(n->get_arg(0)) || m.is_term_ite(n->get_arg(1)));
TRACE("pull_ite_target", tout << mk_pp(n, m) << "\nresult: " << r << "\n";);
return r;
}