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Add recognizers for different kinds of enodes

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This commit is contained in:
Jakob Rath 2023-07-20 17:06:23 +02:00
parent 6d00d18ee4
commit 4b3cfa8c50
2 changed files with 42 additions and 14 deletions
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12
src/math/polysat/slicing.h
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@ -65,7 +65,7 @@ namespace polysat {
// We use the following kinds of enodes:
// - proper slices (of variables)
// - values
// - value slices
// - virtual concat(...) expressions
// - equalities between enodes (to track disequalities; currently not represented in slice_info)
struct slice_info {
@ -79,12 +79,18 @@ namespace polysat {
enode* sub_lo = nullptr; // lower subslice s[cut:0]
void reset() { *this = slice_info(); }
bool is_slice() const { return !slice; }
bool has_sub() const { return !!sub_hi; }
void set_cut(unsigned cut, enode* sub_hi, enode* sub_lo) { this->cut = cut; this->sub_hi = sub_hi; this->sub_lo = sub_lo; }
};
using slice_info_vector = svector<slice_info>;
// Return true iff n is either a proper slice or a value slice
bool is_slice(enode* n) const;
bool is_proper_slice(enode* n) const { return !is_value(n) && is_slice(n); }
bool is_value(enode* n) const { return n->interpreted(); }
bool is_concat(enode* n) const;
bool is_equality(enode* n) const { return n->is_equality(); }
solver& m_solver;
@ -135,8 +141,6 @@ namespace polysat {
// Retrieve (or create) a slice representing the given value.
enode* mk_value_slice(rational const& val, unsigned bit_width);
bool has_value(enode* s) const { return s->interpreted(); }
rational get_value(enode* s) const;
bool try_get_value(enode* s, rational& val) const;