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fix shufle_order: support clang 3.3 or later (default template depth 256)

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This commit is contained in:
bolero-MURAKAMI 2014-01-11 16:05:18 +09:00
parent 14f8d9d042
commit e7b8d74c0f
4 changed files with 104 additions and 3 deletions
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40
sprout/random/shuffle_order.hpp
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@ -23,8 +23,10 @@
#include <sprout/random/linear_congruential.hpp>
#include <sprout/random/detail/signed_unsigned_tools.hpp>
#include <sprout/random/type_traits.hpp>
#include <sprout/random/generate_array.hpp>
#include <sprout/type_traits/enabler_if.hpp>
#include <sprout/assert.hpp>
#include <sprout/workaround/recursive_function_template.hpp>
namespace sprout {
namespace random {
@ -77,6 +79,36 @@ namespace sprout {
return base_type::static_max();
}
private:
template<std::size_t M, typename Random, typename... Args, sprout::index_t... Indexes>
static SPROUT_CONSTEXPR typename std::enable_if<
(M + sizeof...(Args) == k),
member_type
>::type init_member_4(sprout::index_tuple<Indexes...>, sprout::array<result_type, M> const& a, Random const& rnd, Args const&... args) {
return member_type{
rnd.engine(),
sprout::array<result_type, k>{{a[Indexes]..., args...}},
rnd.result()
};
}
template<std::size_t M, typename Random, typename... Args>
static SPROUT_CONSTEXPR typename std::enable_if<
(M + sizeof...(Args) == k),
member_type
>::type init_member_3(sprout::array<result_type, M> const& a, Random const& rnd, Args const&... args) {
return init_member_4(sprout::make_index_tuple<M>::make(), a, rnd, args...);
}
template<std::size_t M, typename Random, typename... Args>
static SPROUT_CONSTEXPR typename std::enable_if<
(M + sizeof...(Args) < k),
member_type
>::type init_member_3(sprout::array<result_type, M> const& a, Random const& rnd, Args const&... args) {
return init_member_3(a, rnd(), args..., rnd.result());
}
template<typename Pair>
static SPROUT_CONSTEXPR member_type init_member_2(Pair const& p) {
return init_member_3(p.first, p.second());
}
template<typename Random, typename... Args>
static SPROUT_CONSTEXPR typename std::enable_if<
(sizeof...(Args) == k),
@ -95,9 +127,15 @@ namespace sprout {
>::type init_member_1(Random const& rnd, Args const&... args) {
return init_member_1(rnd(), args..., rnd.result());
}
static SPROUT_CONSTEXPR member_type init_member(base_type const& rng) {
static SPROUT_CONSTEXPR member_type init_member_0(base_type const& rng, std::true_type) {
return init_member_2(sprout::random::generate_array<k / 2>(rng));
}
static SPROUT_CONSTEXPR member_type init_member_0(base_type const& rng, std::false_type) {
return init_member_1(rng());
}
static SPROUT_CONSTEXPR member_type init_member(base_type const& rng) {
return init_member_0(rng, std::integral_constant<bool, (k >= SPROUT_RECURSIVE_FUNCTION_TEMPLATE_INSTANTIATION_LIMIT)>());
}
private:
using member_type::rng_;
using member_type::v_;