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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-03-28 16:11:16 -07:00
parent 7a6823aef1
commit 1c694fd42f
7 changed files with 130 additions and 63 deletions
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68
src/ast/pattern/expr_pattern_match.cpp
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@ -52,28 +52,50 @@ expr_pattern_match::match_quantifier(quantifier* qf, app_ref_vector& patterns, u
}
m_regs[0] = qf->get_expr();
for (unsigned i = 0; i < m_precompiled.size(); ++i) {
quantifier* qf2 = m_precompiled[i].get();
if (qf2->get_kind() != qf->get_kind() || is_lambda(qf)) {
continue;
}
if (qf2->get_num_decls() != qf->get_num_decls()) {
continue;
}
subst s;
if (match(qf->get_expr(), m_first_instrs[i], s)) {
for (unsigned j = 0; j < qf2->get_num_patterns(); ++j) {
app* p = static_cast<app*>(qf2->get_pattern(j));
expr_ref p_result(m_manager);
instantiate(p, qf->get_num_decls(), s, p_result);
patterns.push_back(to_app(p_result.get()));
}
weight = qf2->get_weight();
return true;
if (match_quantifier(i, qf, patterns, weight))
return true;
}
return false;
}
bool
expr_pattern_match::match_quantifier(unsigned i, quantifier* qf, app_ref_vector& patterns, unsigned& weight) {
quantifier* qf2 = m_precompiled[i].get();
if (qf2->get_kind() != qf->get_kind() || is_lambda(qf)) {
return false;
}
if (qf2->get_num_decls() != qf->get_num_decls()) {
return false;
}
subst s;
if (match(qf->get_expr(), m_first_instrs[i], s)) {
for (unsigned j = 0; j < qf2->get_num_patterns(); ++j) {
app* p = static_cast<app*>(qf2->get_pattern(j));
expr_ref p_result(m_manager);
instantiate(p, qf->get_num_decls(), s, p_result);
patterns.push_back(to_app(p_result.get()));
}
weight = qf2->get_weight();
return true;
}
return false;
}
bool expr_pattern_match::match_quantifier_index(quantifier* qf, app_ref_vector& patterns, unsigned& index) {
if (m_regs.empty()) return false;
m_regs[0] = qf->get_expr();
for (unsigned i = 0; i < m_precompiled.size(); ++i) {
unsigned weight = 0;
if (match_quantifier(i, qf, patterns, weight)) {
index = i;
return true;
}
}
return false;
}
void
expr_pattern_match::instantiate(expr* a, unsigned num_bound, subst& s, expr_ref& result) {
bound b;
@ -399,8 +421,16 @@ expr_pattern_match::initialize(char const * spec_string) {
TRACE("expr_pattern_match", display(tout); );
}
void
expr_pattern_match::display(std::ostream& out) const {
unsigned expr_pattern_match::initialize(quantifier* q) {
if (m_instrs.empty()) {
m_instrs.push_back(instr(BACKTRACK));
}
compile(q);
return m_precompiled.size() - 1;
}
void expr_pattern_match::display(std::ostream& out) const {
for (unsigned i = 0; i < m_instrs.size(); ++i) {
display(out, m_instrs[i]);
}