refactor(frontends/lean/elaborator): do not save/restore cache
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6db46e0505
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0c50517058
1 changed files with 9 additions and 15 deletions
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@ -97,18 +97,16 @@ class elaborator : public coercion_info_manager {
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struct saved_state {
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list<expr> m_ctx;
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list<expr> m_full_ctx;
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cache m_cache;
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saved_state(elaborator & e):
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m_ctx(e.m_context.get_data()), m_full_ctx(e.m_full_context.get_data()), m_cache(e.m_cache) {}
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m_ctx(e.m_context.get_data()), m_full_ctx(e.m_full_context.get_data()) {}
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};
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struct scope_ctx {
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elaborator & m_main;
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local_context::scope m_scope1;
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local_context::scope m_scope2;
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cache m_old_cache;
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scope_ctx(elaborator & e):m_main(e), m_scope1(e.m_context), m_scope2(e.m_full_context), m_old_cache(e.m_cache) {}
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~scope_ctx() { m_main.m_cache = m_old_cache; }
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scope_ctx(elaborator & e):m_main(e), m_scope1(e.m_context), m_scope2(e.m_full_context) {}
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~scope_ctx() {}
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};
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/** \brief Auxiliary object for creating backtracking points, and replacing the local scopes. */
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@ -117,19 +115,15 @@ class elaborator : public coercion_info_manager {
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bool m_old_no_info;
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local_context::scope_replace m_context_scope;
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local_context::scope_replace m_full_context_scope;
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cache m_old_cache;
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new_scope(elaborator & e, saved_state const & s, bool no_info = false):
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m_main(e),
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m_context_scope(e.m_context, s.m_ctx),
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m_full_context_scope(e.m_full_context, s.m_full_ctx){
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m_old_no_info = m_main.m_no_info;
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m_main.m_no_info = no_info;
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m_old_cache = m_main.m_cache;
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m_main.m_cache = s.m_cache;
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}
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~new_scope() {
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m_main.m_no_info = m_old_no_info;
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m_main.m_cache = m_old_cache;
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}
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};
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@ -141,14 +135,14 @@ class elaborator : public coercion_info_manager {
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*/
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struct choice_expr_elaborator : public choice_iterator {
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elaborator & m_elab;
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expr m_mvar;
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expr m_meta;
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expr m_choice;
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saved_state m_state;
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unsigned m_idx;
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bool m_relax_main_opaque;
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choice_expr_elaborator(elaborator & elab, expr const & mvar, expr const & c,
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choice_expr_elaborator(elaborator & elab, expr const & meta, expr const & c,
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saved_state const & s, bool relax):
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m_elab(elab), m_mvar(mvar), m_choice(c), m_state(s),
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m_elab(elab), m_meta(meta), m_choice(c), m_state(s),
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m_idx(get_num_choices(m_choice)), m_relax_main_opaque(relax) {
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}
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@ -162,7 +156,7 @@ class elaborator : public coercion_info_manager {
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new_scope s(m_elab, m_state);
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pair<expr, constraint_seq> rcs = m_elab.visit(c);
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expr r = rcs.first;
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constraint_seq cs = mk_eq_cnstr(m_mvar, r, justification(), m_relax_main_opaque) + rcs.second;
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constraint_seq cs = mk_eq_cnstr(m_meta, r, justification(), m_relax_main_opaque) + rcs.second;
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return optional<constraints>(cs.to_list());
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} catch (exception &) {}
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}
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@ -328,9 +322,9 @@ public:
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expr m = m_full_context.mk_meta(t, e.get_tag());
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saved_state s(*this);
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bool relax = m_relax_main_opaque;
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auto fn = [=](expr const & mvar, expr const & /* type */, substitution const & /* s */,
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auto fn = [=](expr const & meta, expr const & /* type */, substitution const & /* s */,
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name_generator const & /* ngen */) {
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return choose(std::make_shared<choice_expr_elaborator>(*this, mvar, e, s, relax));
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return choose(std::make_shared<choice_expr_elaborator>(*this, meta, e, s, relax));
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};
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justification j = mk_justification("none of the overloads is applicable", some_expr(e));
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cs += mk_choice_cnstr(m, fn, to_delay_factor(cnstr_group::Basic), true, j, m_relax_main_opaque);
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