format.hpp

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// Copyright (c) 2019-2024 Simons Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0.txt
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Authors: Thomas Hahn, Olivier Parcollet, Nils Wentzell
 
#ifndef LIBH5_FORMAT_HPP
#define LIBH5_FORMAT_HPP
 
#include "./macros.hpp"
#include "./group.hpp"
#include "./stl/string.hpp"
 
#include <complex>
#include <string>
 
namespace h5 {
 
  template <typename T>
  struct hdf5_format_impl {
    static std::string invoke() { return T::hdf5_format(); }
  };
 
#define H5_SPECIALIZE_FORMAT2(X, Y)                                                                                                                  \
                                                                                        \
  template <>                                                                                                                                        \
  struct hdf5_format_impl<X> {                                                                                                                       \
    static std::string invoke() { return H5_AS_STRING(Y); }                                                                                          \
  }
 
#define H5_SPECIALIZE_FORMAT(X) H5_SPECIALIZE_FORMAT2(X, X)
 
  H5_SPECIALIZE_FORMAT(bool);
  H5_SPECIALIZE_FORMAT(int);
  H5_SPECIALIZE_FORMAT(long);
  H5_SPECIALIZE_FORMAT(long long);
  H5_SPECIALIZE_FORMAT(unsigned int);
  H5_SPECIALIZE_FORMAT(unsigned long);
  H5_SPECIALIZE_FORMAT(unsigned long long);
  H5_SPECIALIZE_FORMAT(float);
  H5_SPECIALIZE_FORMAT(double);
  H5_SPECIALIZE_FORMAT(long double);
  H5_SPECIALIZE_FORMAT2(std::complex<double>, complex);
 
  template <typename T>
  std::string get_hdf5_format() {
    return hdf5_format_impl<T>::invoke();
  }
 
  template <typename T>
  std::string get_hdf5_format(T const &) {
    return hdf5_format_impl<T>::invoke();
  }
 
  inline void write_hdf5_format_as_string(object obj, std::string const &s) { h5_write_attribute(obj, "Format", s); }
 
  template <typename T>
  inline void write_hdf5_format(object obj, T const &) {
    h5_write_attribute(obj, "Format", get_hdf5_format<T>());
  }
 
  void read_hdf5_format(object obj, std::string &s);
 
  std::string read_hdf5_format(group g);
 
  void read_hdf5_format_from_key(group g, std::string const &key, std::string &s);
 
  void assert_hdf5_format_as_string(group g, const char *tag_expected, bool ignore_if_absent = false);
 
  template <typename T>
  void assert_hdf5_format(group g, T const &, bool ignore_if_absent = false) {
    assert_hdf5_format_as_string(g, get_hdf5_format<T>().c_str(), ignore_if_absent);
  }
 
} // namespace h5
 
#endif // LIBH5_FORMAT_HPP