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fix #7404, relates to #7400.

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This commit is contained in:
Nikolaj Bjorner 2024-09-27 11:36:10 +01:00
parent d047b86439
commit 01cf0427b4
6 changed files with 55 additions and 10 deletions
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26
src/tactic/tactic.cpp
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@ -95,6 +95,32 @@ tactic * mk_skip_tactic() {
return alloc(skip_tactic);
}
class lazy_tactic : public tactic {
ast_manager& m;
params_ref p;
std::function<tactic* (ast_manager& m, params_ref const& p)> m_mk_tactic;
tactic* m_tactic = nullptr;
void ensure_tactic() { if (!m_tactic) m_tactic = m_mk_tactic(m, p); }
public:
lazy_tactic(ast_manager& m, params_ref const& p, std::function<tactic* (ast_manager&, params_ref const&)> mk_tactic) : m(m), p(p), m_mk_tactic(mk_tactic) {}
~lazy_tactic() override { dealloc(m_tactic); }
void operator()(goal_ref const& in, goal_ref_buffer& result) override {
ensure_tactic();
(*m_tactic)(in, result);
}
void cleanup() override { if (m_tactic) m_tactic->cleanup(); }
char const* name() const override { return "lazy tactic"; }
void collect_statistics(statistics& st) const override { if (m_tactic) m_tactic->collect_statistics(st); }
void user_propagate_initialize_value(expr* var, expr* value) override { if (m_tactic) m_tactic->user_propagate_initialize_value(var, value); }
tactic* translate(ast_manager& m) override { ensure_tactic(); return m_tactic->translate(m); }
void reset() override { if (m_tactic) m_tactic->reset(); }
};
tactic* mk_lazy_tactic(ast_manager& m, params_ref const& p, std::function<tactic*(ast_manager& m, params_ref const& p)> mkt) {
return alloc(lazy_tactic, m, p, mkt);
}
class fail_tactic : public tactic {
public:
void operator()(goal_ref const & in, goal_ref_buffer & result) override {