30 lines
938 B
C
30 lines
938 B
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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#pragma once
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#include "kernel/expr.h"
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namespace lean {
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namespace blast {
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class action_result {
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public:
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enum kind { Failed, Solved, NewBranch };
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private:
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kind m_kind;
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expr m_proof;
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action_result(bool b = true):m_kind(b ? NewBranch : Failed) {}
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action_result(expr const & pr):m_kind(Solved), m_proof(pr) {}
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public:
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kind get_kind() const { return m_kind; }
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expr get_proof() const { lean_assert(m_kind == Solved); return m_proof; }
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static action_result failed() { return action_result(false); }
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static action_result new_branch() { return action_result(true); }
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static action_result solved(expr const & pr) { return action_result(pr); }
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};
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inline bool failed(action_result const & r) { return r.get_kind() == action_result::Failed; }
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}}
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