/Src/Dependencies/Boost/boost/range/algorithm/transform.hpp

http://hadesmem.googlecode.com/ · C++ Header · 97 lines · 70 code · 9 blank · 18 comment · 3 complexity · a4355253ba5bdd97d971158013221ca4 MD5 · raw file

  1. // Copyright Neil Groves 2009. Use, modification and
  2. // distribution is subject to the Boost Software License, Version
  3. // 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  4. // http://www.boost.org/LICENSE_1_0.txt)
  5. //
  6. //
  7. // For more information, see http://www.boost.org/libs/range/
  8. //
  9. #ifndef BOOST_RANGE_ALGORITHM_TRANSFORM_HPP_INCLUDED
  10. #define BOOST_RANGE_ALGORITHM_TRANSFORM_HPP_INCLUDED
  11. #include <boost/assert.hpp>
  12. #include <boost/concept_check.hpp>
  13. #include <boost/range/begin.hpp>
  14. #include <boost/range/end.hpp>
  15. #include <boost/range/concepts.hpp>
  16. #include <algorithm>
  17. namespace boost
  18. {
  19. namespace range
  20. {
  21. /// \brief template function transform
  22. ///
  23. /// range-based version of the transform std algorithm
  24. ///
  25. /// \pre SinglePassRange1 is a model of the SinglePassRangeConcept
  26. /// \pre SinglePassRange2 is a model of the SinglePassRangeConcept
  27. /// \pre OutputIterator is a model of the OutputIteratorConcept
  28. /// \pre UnaryOperation is a model of the UnaryFunctionConcept
  29. /// \pre BinaryOperation is a model of the BinaryFunctionConcept
  30. template< class SinglePassRange1,
  31. class OutputIterator,
  32. class UnaryOperation >
  33. inline OutputIterator
  34. transform(const SinglePassRange1& rng,
  35. OutputIterator out,
  36. UnaryOperation fun)
  37. {
  38. BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange1> ));
  39. return std::transform(boost::begin(rng),boost::end(rng),out,fun);
  40. }
  41. } // namespace range
  42. namespace range_detail
  43. {
  44. template< class SinglePassTraversalReadableIterator1,
  45. class SinglePassTraversalReadableIterator2,
  46. class OutputIterator,
  47. class BinaryFunction >
  48. inline OutputIterator
  49. transform_impl(SinglePassTraversalReadableIterator1 first1,
  50. SinglePassTraversalReadableIterator1 last1,
  51. SinglePassTraversalReadableIterator2 first2,
  52. SinglePassTraversalReadableIterator2 last2,
  53. OutputIterator out,
  54. BinaryFunction fn)
  55. {
  56. for (; first1 != last1; ++first1, ++first2)
  57. {
  58. BOOST_ASSERT( first2 != last2 );
  59. *out = fn(*first1, *first2);
  60. ++out;
  61. }
  62. return out;
  63. }
  64. }
  65. namespace range
  66. {
  67. /// \overload
  68. template< class SinglePassRange1,
  69. class SinglePassRange2,
  70. class OutputIterator,
  71. class BinaryOperation >
  72. inline OutputIterator
  73. transform(const SinglePassRange1& rng1,
  74. const SinglePassRange2& rng2,
  75. OutputIterator out,
  76. BinaryOperation fun)
  77. {
  78. BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange1> ));
  79. BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange2> ));
  80. return boost::range_detail::transform_impl(
  81. boost::begin(rng1), boost::end(rng1),
  82. boost::begin(rng2), boost::end(rng2),
  83. out, fun);
  84. }
  85. } // namespace range
  86. using range::transform;
  87. } // namespace boost
  88. #endif // include guard