maybe_reduced.hpp
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22 
27 #pragma once
28 
30 
31 namespace atria {
32 namespace xform {
33 
39 
47 template <typename T>
49 
50 inline bool state_wrapper_data_is_reduced(maybe_reduced_tag, bool is_reduced)
51 {
52  return is_reduced;
53 }
54 
59 template <typename T>
60 auto reduced_if(T&& x, bool is_reduced)
62 {
64  std::forward<T>(x),
65  is_reduced
66  };
67 }
68 
72 template <typename T>
73 auto reduced(T&& x)
75  reduced_if(std::forward<T>(x), true))
76 
77 
80 template <typename T>
81 auto not_reduced(T&& x)
83  reduced_if(std::forward<T>(x), false))
84 
85 } // namespace xform
86 } // namespace atria
auto reduced(T &&x) -> decltype(reduced_if(std::forward< T >(x), true))
Wraps x such that the reduction should finish.
#define ABL_DECLTYPE_RETURN(body_expr)
Utility for defining generic functions with a deduced return type, that are composed of a single expr...
Definition: utils.hpp:109
Tag for maybe_reduced state wrapper.
STL namespace.
auto not_reduced(T &&x) -> decltype(reduced_if(std::forward< T >(x), false))
Wraps x such that the reduction should continue.
auto reduced_if(T &&x, bool is_reduced) -> maybe_reduced< estd::decay_t< T > >
Wraps x in a maybe_reduced, where is_reduced contains whether the reduction should actually finish...
C++ amazing templates and reusable implementations awesomeness.
Definition: _doc.hpp:35
A decorator for the accumulator of a reduction.
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