capture.hpp

// Copyright (C) 2018-2021 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
//
 
#pragma once
 
#include "ngraph/node.hpp"
#include "ngraph/pattern/op/pattern.hpp"
 
namespace ngraph
{
    namespace pattern
    {
        namespace op
        {
            /// Experimental for support of recurrent matches.
            ///
            /// Capture adds the pattern value map to a list of pattern value maps and resets
            /// matches for pattern nodes not in the static node list. The match always succeeds.
            class NGRAPH_API Capture : public Pattern
            {
            public:
                static constexpr NodeTypeInfo type_info{"patternCapture", 0};
                const NodeTypeInfo& get_type_info() const override;
                Capture(const Output<Node>& arg)
                    : Pattern({arg})
                {
                    set_output_type(0, arg.get_element_type(), arg.get_partial_shape());
                }
 
                /// \brief static nodes are retained after a capture. All other nodes are dropped
                std::set<Node*> get_static_nodes() { return m_static_nodes; }
                void set_static_nodes(const std::set<Node*>& static_nodes)
                {
                    m_static_nodes = static_nodes;
                }
 
                virtual bool match_value(pattern::Matcher* matcher,
                                         const Output<Node>& pattern_value,
                                         const Output<Node>& graph_value) override;
 
            protected:
                std::set<Node*> m_static_nodes;
            };
        } // namespace op
    }     // namespace pattern
} // namespace ngraph