49 lines
1 KiB
C++
49 lines
1 KiB
C++
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/*
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Copyright (c) 2015 Microsoft Corporation. All rights reserved.
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Released under Apache 2.0 license as described in the file LICENSE.
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Author: Leonardo de Moura
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*/
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#include <vector>
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#include "library/blast/blast.h"
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#include "library/blast/choice_point.h"
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namespace lean {
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namespace blast {
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MK_THREAD_LOCAL_GET_DEF(std::vector<choice_point>, get_choice_points);
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void init_choice_points() {
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get_choice_points().clear();
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}
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void push_choice_point(choice_point const & c) {
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get_choice_points().push_back(c);
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}
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bool next_choice_point() {
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auto & cs = get_choice_points();
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while (true) {
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if (cs.empty())
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return false;
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if (auto r = cs.back().next()) {
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curr_state() = *r;
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return true;
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}
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cs.pop_back();
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}
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}
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unsigned get_num_choice_points() {
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return get_choice_points().size();
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}
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void shrink_choice_points(unsigned n) {
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lean_assert(n <= get_choice_points().size());
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get_choice_points().resize(n);
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}
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void clear_choice_points() {
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get_choice_points().clear();
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}
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}}
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