.. _program_listing_file_src_rdf4cpp_Quad.hpp:

Program Listing for File Quad.hpp
=================================

|exhale_lsh| :ref:`Return to documentation for file <file_src_rdf4cpp_Quad.hpp>` (``src/rdf4cpp/Quad.hpp``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   #ifndef RDF4CPP_QUAD_HPP
   #define RDF4CPP_QUAD_HPP
   
   #include <rdf4cpp/Statement.hpp>
   #include <rdf4cpp/query/QuadPattern.hpp>
   
   namespace rdf4cpp {
   
   struct Quad : query::QuadPattern {
   
       Quad() noexcept = default;
   
       Quad(Node subject, Node predicate, Node object) noexcept;
   
       Quad(Node graph, Node subject, Node predicate, Node object) noexcept;
   
   
       [[nodiscard]] bool valid() const noexcept;
   
       static std::optional<Quad> create_validated(Node graph, Node subject, Node predicate, Node object) noexcept;
   
       static std::optional<Quad> create_validated(Node subject, Node predicate, Node object) noexcept;
   
       [[nodiscard]] Statement const &without_graph() const noexcept;
   
       [[nodiscard]] Quad to_node_storage(storage::DynNodeStoragePtr node_storage) const;
       [[nodiscard]] Quad try_get_in_node_storage(storage::DynNodeStoragePtr node_storage) const noexcept;
   
       bool serialize_ntriples(writer::BufWriterParts writer) const noexcept;
       bool serialize_nquads(writer::BufWriterParts writer) const noexcept;
       bool serialize_turtle(writer::SerializationState &state, writer::BufWriterParts writer) const noexcept;
       bool serialize_trig(writer::SerializationState &state, writer::BufWriterParts writer) const noexcept;
   };
   }  // namespace rdf4cpp
   
   template<typename Policy>
   struct dice::hash::dice_hash_overload<Policy, rdf4cpp::Quad> {
       static inline size_t dice_hash(rdf4cpp::Quad const &x) noexcept {
           return dice::hash::dice_hash_templates<Policy>::dice_hash(std::tie(x.graph(), x.subject(), x.predicate(), x.object()));
       }
   };
   
   #endif  //RDF4CPP_QUAD_HPP