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helpers

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This commit is contained in:
Jakob Rath 2023-08-18 14:47:29 +02:00
parent 93592ea3f2
commit 9bffb34ce1
2 changed files with 40 additions and 13 deletions
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12
src/math/polysat/slicing.h
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@ -41,8 +41,9 @@ namespace polysat {
public:
using enode = euf::enode;
using enode_pair = euf::enode_pair;
using enode_vector = euf::enode_vector;
using enode_pair = euf::enode_pair;
using enode_pair_vector = euf::enode_pair_vector;
private:
class dep_t {
@ -130,6 +131,8 @@ namespace polysat {
func_decl* mk_concat_decl(ptr_vector<expr> const& args);
enode* mk_concat_node(enode_vector const& slices);
enode* mk_concat_node(std::initializer_list<enode*> slices) { return mk_concat_node(slices.size(), slices.begin()); }
enode* mk_concat_node(unsigned num_slices, enode* const* slices);
// Add s = concat(s1, ..., sn)
void add_concat_node(enode* s, enode* concat);
@ -154,6 +157,8 @@ namespace polysat {
enode* get_value_node(enode* s) const { return info(s->get_root()).value_node; }
void set_value_node(enode* s, enode* value_node);
unsigned get_cut(enode* s) const { return info(s).cut; }
bool has_sub(enode* s) const { return info(s).has_sub(); }
/// Upper subslice (direct child, not necessarily the representative)
@ -162,6 +167,9 @@ namespace polysat {
/// Lower subslice (direct child, not necessarily the representative)
enode* sub_lo(enode* s) const { return info(s).sub_lo; }
/// sub_lo(parent(s)) or sub_hi(parent(s)), whichever is different from s.
enode* sibling(enode* s) const;
// Retrieve (or create) a slice representing the given value.
enode* mk_value_slice(rational const& val, unsigned bit_width);
@ -177,6 +185,7 @@ namespace polysat {
/// Retrieve base slices s_1,...,s_n such that src == s_1 ++ ... ++ s_n (actual descendant subslices)
void get_base(enode* src, enode_vector& out_base) const;
enode_vector get_base(enode* src) const;
/// Retrieve (or create) base slices s_1,...,s_n such that src[hi:lo] == s_1 ++ ... ++ s_n.
/// If output_full_src is true, return the new base for src, i.e., src == s_1 ++ ... ++ s_n.
@ -333,7 +342,6 @@ namespace polysat {
bool is_extract(pvar x, pvar src, unsigned& out_hi, unsigned& out_lo);
// Track value assignments to variables (and propagate to subslices)
// (could generalize to fixed bits, then we need a way to merge interpreted enodes)
void add_value(pvar v, rational const& value);
void add_value(pvar v, unsigned value) { add_value(v, rational(value)); }
void add_value(pvar v, int value) { add_value(v, rational(value)); }