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add isolated hide/add model converter functions

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This commit is contained in:
Nikolaj Bjorner 2022-11-19 18:50:37 +07:00
parent a81a5ec68c
commit d735faae4e
2 changed files with 40 additions and 40 deletions
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47
src/ast/simplifiers/model_reconstruction_trail.cpp
View file

@ -30,8 +30,9 @@ void model_reconstruction_trail::replay(dependent_expr const& d, vector<dependen
if (!t->m_active)
continue;
if (t->m_hide)
if (t->is_hide())
continue;
// updates that have no intersections with current variables are skipped
if (!t->intersects(free_vars))
@ -48,6 +49,9 @@ void model_reconstruction_trail::replay(dependent_expr const& d, vector<dependen
continue;
}
if (t->is_def())
NOT_IMPLEMENTED_YET();
rp->set_substitution(t->m_subst.get());
// rigid entries:
// apply substitution to added in case of rigid model convertions
@ -63,48 +67,23 @@ void model_reconstruction_trail::replay(dependent_expr const& d, vector<dependen
* retrieve the current model converter corresponding to chaining substitutions from the trail.
*/
model_converter_ref model_reconstruction_trail::get_model_converter() {
//
// walk the trail from the back
// add substitutions from the back to the generic model converter
// after they have been normalized using a global replace that replaces
// substituted variables by their terms.
//
scoped_ptr<expr_replacer> rp = mk_default_expr_replacer(m, false);
expr_substitution subst(m, true, false);
rp->set_substitution(&subst);
generic_model_converter_ref mc = alloc(generic_model_converter, m, "dependent-expr-model");
bool first = true;
for (unsigned i = m_trail.size(); i-- > 0; ) {
for (unsigned i = 0; i < m_trail.size(); ++i) {
auto* t = m_trail[i];
if (!t->m_active)
continue;
if (t->m_hide) {
mc->hide(t->m_hide);
continue;
}
if (first) {
first = false;
for (auto const& [v, def] : t->m_subst->sub()) {
expr_dependency* dep = t->m_subst->dep(v);
subst.insert(v, def, dep);
else if (t->is_hide())
mc->hide(t->m_decl);
else if (t->is_def())
mc->add(t->m_decl, t->m_def);
else {
for (auto const& [v, def] : t->m_subst->sub())
mc->add(v, def);
}
continue;
}
for (auto const& [v, def] : t->m_subst->sub()) {
auto [new_def, new_dep] = rp->replace_with_dep(def);
expr_dependency* dep = t->m_subst->dep(v);
new_dep = m.mk_join(dep, new_dep);
subst.insert(v, new_def, new_dep);
mc->add(v, new_def);
}
}
}
return model_converter_ref(mc.get());

33
src/ast/simplifiers/model_reconstruction_trail.h
View file

@ -35,22 +35,35 @@ class model_reconstruction_trail {
struct entry {
scoped_ptr<expr_substitution> m_subst;
vector<dependent_expr> m_removed;
func_decl* m_hide = nullptr;
func_decl_ref m_decl;
expr_ref m_def;
bool m_active = true;
entry(expr_substitution* s, vector<dependent_expr> const& rem) :
m_subst(s), m_removed(rem) {}
entry(func_decl* h) : m_hide(h) {}
entry(ast_manager& m, expr_substitution* s, vector<dependent_expr> const& rem) :
m_subst(s), m_removed(rem), m_decl(m), m_def(m) {}
entry(ast_manager& m, func_decl* h) : m_decl(h, m), m_def(m) {}
entry(ast_manager& m, func_decl* f, expr* def, vector<dependent_expr> const& rem) :
m_decl(f, m), m_def(def, m), m_removed(rem) {}
bool is_loose() const { return !m_removed.empty(); }
bool intersects(ast_mark const& free_vars) const {
if (is_hide())
return false;
if (is_def())
return free_vars.is_marked(m_decl);
for (auto const& [k, v] : m_subst->sub())
if (free_vars.is_marked(k))
return true;
return false;
}
bool is_hide() const { return m_decl && !m_def; }
bool is_def() const { return m_decl && m_def; }
bool is_subst() const { return !m_decl; }
};
ast_manager& m;
@ -81,7 +94,7 @@ public:
* add a new substitution to the trail
*/
void push(expr_substitution* s, vector<dependent_expr> const& removed) {
m_trail.push_back(alloc(entry, s, removed));
m_trail.push_back(alloc(entry, m, s, removed));
m_trail_stack.push(push_back_vector(m_trail));
}
@ -89,7 +102,15 @@ public:
* add declaration to hide
*/
void push(func_decl* f) {
m_trail.push_back(alloc(entry, f));
m_trail.push_back(alloc(entry, m, f));
m_trail_stack.push(push_back_vector(m_trail));
}
/**
* add definition
*/
void push(func_decl* f, expr* def, vector<dependent_expr> const& removed) {
m_trail.push_back(alloc(entry, m, f, def, removed));
m_trail_stack.push(push_back_vector(m_trail));
}