.. _program_listing_file_src_rdf4cpp_Statement.cpp:

Program Listing for File Statement.cpp
======================================

|exhale_lsh| :ref:`Return to documentation for file <file_src_rdf4cpp_Statement.cpp>` (``src/rdf4cpp/Statement.cpp``)

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

.. code-block:: cpp

   #include "Statement.hpp"
   
   #include <rdf4cpp/writer/WriteQuad.hpp>
   
   namespace rdf4cpp {
   
   Statement::Statement(Node subject, Node predicate, Node object) noexcept : query::TriplePattern{subject, predicate, object} {
   }
   
   bool Statement::valid() const noexcept {
       return ((subject().is_iri() || subject().is_blank_node())
               && (predicate().is_iri())
               && (object().is_iri() || object().is_literal() || object().is_blank_node()));
   }
   
   [[nodiscard]] Statement Statement::to_node_storage(storage::DynNodeStoragePtr node_storage) const {
       Statement st;
       auto it = st.begin();
       for (auto const &item : *this) {
           *(it++) = item.to_node_storage(node_storage);
       }
       return st;
   }
   
   [[nodiscard]] Statement Statement::try_get_in_node_storage(storage::DynNodeStoragePtr node_storage) const noexcept {
       Statement st;
       auto it = st.begin();
       for (auto const &item : *this) {
           *(it++) = item.try_get_in_node_storage(node_storage);
       }
       return st;
   }
   
   bool Statement::serialize_ntriples(writer::BufWriterParts writer) const noexcept {
       return writer::write_quad<writer::OutputFormat::NTriples>(*this, writer, nullptr);
   }
   
   bool Statement::serialize_turtle(writer::SerializationState &state, writer::BufWriterParts writer) const noexcept {
       return writer::write_quad<writer::OutputFormat::Turtle>(*this, writer, &state);
   }
   
   }  // namespace rdf4cpp