// Boost.Geometry (aka GGL, Generic Geometry Library)
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// Copyright (c) 2015, Oracle and/or its affiliates.
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// Contributed and/or modified by Menelaos Karavelas, on behalf of Oracle
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// Licensed under the Boost Software License version 1.0.
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// http://www.boost.org/users/license.html
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#ifndef BOOST_GEOMETRY_POLICIES_IS_VALID_FAILURE_TYPE_POLICY_HPP
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#define BOOST_GEOMETRY_POLICIES_IS_VALID_FAILURE_TYPE_POLICY_HPP
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#include <boost/geometry/algorithms/validity_failure_type.hpp>
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namespace boost { namespace geometry
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{
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// policy that simply keeps (and can return) the failure type
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template <bool AllowDuplicates = true, bool AllowSpikes = true>
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class failure_type_policy
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{
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private:
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static inline
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validity_failure_type transform_failure_type(validity_failure_type failure)
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{
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if (AllowDuplicates && failure == failure_duplicate_points)
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{
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return no_failure;
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}
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return failure;
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}
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static inline
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validity_failure_type transform_failure_type(validity_failure_type failure,
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bool is_linear)
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{
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if (is_linear && AllowSpikes && failure == failure_spikes)
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{
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return no_failure;
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}
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return transform_failure_type(failure);
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}
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public:
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failure_type_policy()
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: m_failure(no_failure)
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{}
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template <validity_failure_type Failure>
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inline bool apply()
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{
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m_failure = transform_failure_type(Failure);
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return m_failure == no_failure;
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}
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template <validity_failure_type Failure, typename Data>
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inline bool apply(Data const&)
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{
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return apply<Failure>();
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}
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template <validity_failure_type Failure, typename Data1, typename Data2>
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inline bool apply(Data1 const& data1, Data2 const&)
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{
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m_failure = transform_failure_type(Failure, data1);
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return m_failure == no_failure;
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}
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validity_failure_type failure() const
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{
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return m_failure;
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}
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private:
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validity_failure_type m_failure;
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};
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}} // namespace boost::geometry
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#endif // BOOST_GEOMETRY_POLICIES_IS_VALID_FAILURE_TYPE_POLICY_HPP
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