mirror of
https://github.com/bolero-MURAKAMI/Sprout
synced 2025-08-03 12:49:50 +00:00
add generators::next_value function
This commit is contained in:
bolero-MURAKAMI
parent
2fe34cc922
commit
51614b1356
16 changed files with 681 additions and 98 deletions
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@ -67,11 +67,11 @@ namespace sprout {
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>::type
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> {
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public:
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static SPROUT_CONSTEXPR decltype(std::declval<Gen&>().generated_value())
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get_generated_value(Gen& gen)
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SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen&>().generated_value())
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static SPROUT_CONSTEXPR decltype(std::declval<Gen>().generated_value())
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get_generated_value(Gen gen)
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SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen>().generated_value())
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{
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typedef decltype(std::declval<Gen&>().generated_value()) type;
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typedef decltype(std::declval<Gen>().generated_value()) type;
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return sprout::const_reference_cast<type>(sprout::as_const(gen).generated_value());
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}
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};
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@ -85,9 +85,9 @@ namespace sprout {
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>::type
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> {
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public:
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static SPROUT_CONSTEXPR decltype(std::declval<Gen&>().generated_value())
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get_generated_value(Gen& gen)
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SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen&>().generated_value())
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static SPROUT_CONSTEXPR decltype(std::declval<Gen>().generated_value())
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get_generated_value(Gen gen)
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SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen>().generated_value())
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{
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return gen.generated_value();
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}
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@ -103,9 +103,9 @@ namespace sprout {
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>::type
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> {
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public:
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static SPROUT_CONSTEXPR decltype(*std::declval<Gen&>())
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get_generated_value(Gen& gen)
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SPROUT_NOEXCEPT_IF_EXPR(*std::declval<Gen&>())
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static SPROUT_CONSTEXPR decltype(*std::declval<Gen>())
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get_generated_value(Gen gen)
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SPROUT_NOEXCEPT_IF_EXPR(*std::declval<Gen>())
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{
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return *gen;
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}
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@ -121,9 +121,9 @@ namespace sprout {
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>::type
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> {
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public:
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static SPROUT_CONSTEXPR decltype(sprout::tuples::get<0>(std::declval<Gen&>()))
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get_generated_value(Gen& gen)
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SPROUT_NOEXCEPT_IF_EXPR(sprout::tuples::get<0>(std::declval<Gen&>()))
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static SPROUT_CONSTEXPR decltype(sprout::tuples::get<0>(std::declval<Gen>()))
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get_generated_value(Gen gen)
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SPROUT_NOEXCEPT_IF_EXPR(sprout::tuples::get<0>(std::declval<Gen>()))
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{
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return sprout::tuples::get<0>(gen);
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}
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@ -138,11 +138,11 @@ namespace sprout {
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>::type
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> {
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public:
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static SPROUT_CONSTEXPR decltype(std::declval<Gen&&>().generated_value())
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get_generated_value(Gen&& gen)
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SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen&&>().generated_value())
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static SPROUT_CONSTEXPR decltype(std::declval<Gen>().generated_value())
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get_generated_value(Gen gen)
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SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen>().generated_value())
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{
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typedef decltype(std::declval<Gen&&>().generated_value()) type;
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typedef decltype(std::declval<Gen>().generated_value()) type;
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return sprout::const_reference_cast<type>(sprout::as_const(sprout::move(gen)).generated_value());
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}
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};
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@ -156,9 +156,9 @@ namespace sprout {
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>::type
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> {
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public:
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static SPROUT_CONSTEXPR decltype(std::declval<Gen&&>().generated_value())
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get_generated_value(Gen&& gen)
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SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen&&>().generated_value())
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static SPROUT_CONSTEXPR decltype(std::declval<Gen>().generated_value())
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get_generated_value(Gen gen)
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SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen>().generated_value())
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{
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return sprout::move(gen).generated_value();
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}
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@ -174,9 +174,9 @@ namespace sprout {
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>::type
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> {
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public:
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static SPROUT_CONSTEXPR decltype(*std::declval<Gen&&>())
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get_generated_value(Gen&& gen)
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SPROUT_NOEXCEPT_IF_EXPR(*std::declval<Gen&&>())
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static SPROUT_CONSTEXPR decltype(*std::declval<Gen>())
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get_generated_value(Gen gen)
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SPROUT_NOEXCEPT_IF_EXPR(*std::declval<Gen>())
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{
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return *sprout::move(gen);
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}
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@ -192,9 +192,9 @@ namespace sprout {
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>::type
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> {
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public:
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static SPROUT_CONSTEXPR decltype(sprout::tuples::get<0>(std::declval<Gen&&>()))
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get_generated_value(Gen&& gen)
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SPROUT_NOEXCEPT_IF_EXPR(sprout::tuples::get<0>(std::declval<Gen&&>()))
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static SPROUT_CONSTEXPR decltype(sprout::tuples::get<0>(std::declval<Gen>()))
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get_generated_value(Gen gen)
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SPROUT_NOEXCEPT_IF_EXPR(sprout::tuples::get<0>(std::declval<Gen>()))
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{
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return sprout::tuples::get<0>(sprout::move(gen));
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}
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@ -209,9 +209,9 @@ namespace sprout {
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>::type
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> {
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public:
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static SPROUT_CONSTEXPR decltype(std::declval<Gen const&>().generated_value())
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get_generated_value(Gen const& gen)
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SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen const&>().generated_value())
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static SPROUT_CONSTEXPR decltype(std::declval<Gen>().generated_value())
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get_generated_value(Gen gen)
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SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen>().generated_value())
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{
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return gen.generated_value();
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}
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@ -226,9 +226,9 @@ namespace sprout {
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>::type
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> {
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public:
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static SPROUT_CONSTEXPR decltype(*std::declval<Gen const&>())
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get_generated_value(Gen const& gen)
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SPROUT_NOEXCEPT_IF_EXPR(*std::declval<Gen const&>())
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static SPROUT_CONSTEXPR decltype(*std::declval<Gen>())
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get_generated_value(Gen gen)
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SPROUT_NOEXCEPT_IF_EXPR(*std::declval<Gen>())
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{
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return *gen;
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}
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@ -243,9 +243,9 @@ namespace sprout {
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>::type
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> {
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public:
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static SPROUT_CONSTEXPR decltype(sprout::tuples::get<0>(std::declval<Gen const&>()))
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get_generated_value(Gen const& gen)
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SPROUT_NOEXCEPT_IF_EXPR(sprout::tuples::get<0>(std::declval<Gen const&>()))
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static SPROUT_CONSTEXPR decltype(sprout::tuples::get<0>(std::declval<Gen>()))
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get_generated_value(Gen gen)
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SPROUT_NOEXCEPT_IF_EXPR(sprout::tuples::get<0>(std::declval<Gen>()))
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{
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return sprout::tuples::get<0>(gen);
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}
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@ -15,7 +15,6 @@
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#include <sprout/type_traits/identity.hpp>
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#include <sprout/iterator/const_reference_cast.hpp>
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#include <sprout/iterator/type_traits/is_iterator_of.hpp>
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#include <sprout/iterator/next.hpp>
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#include <sprout/utility/as_const.hpp>
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#include <sprout/utility/move.hpp>
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#include <sprout/tuple/tuple.hpp>
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@ -68,11 +67,11 @@ namespace sprout {
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>::type
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> {
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public:
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static SPROUT_CONSTEXPR decltype(std::declval<Gen&>().next_generator())
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get_next_generator(Gen& gen)
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SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen&>().next_generator())
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static SPROUT_CONSTEXPR decltype(std::declval<Gen>().next_generator())
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get_next_generator(Gen gen)
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SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen>().next_generator())
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{
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typedef decltype(std::declval<Gen&>().next_generator()) type;
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typedef decltype(std::declval<Gen>().next_generator()) type;
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return sprout::const_reference_cast<type>(sprout::as_const(gen).next_generator());
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}
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};
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@ -86,32 +85,14 @@ namespace sprout {
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>::type
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> {
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public:
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static SPROUT_CONSTEXPR decltype(std::declval<Gen&>().next_generator())
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get_next_generator(Gen& gen)
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SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen&>().next_generator())
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static SPROUT_CONSTEXPR decltype(std::declval<Gen>().next_generator())
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get_next_generator(Gen gen)
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SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen>().next_generator())
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{
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return gen.next_generator();
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}
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};
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template<typename Gen>
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struct get_next_generator_impl<
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Gen,
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typename std::enable_if<
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std::is_lvalue_reference<Gen>::value && !std::is_const<typename std::remove_reference<Gen>::type>::value
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&& !sprout::detail::is_substitutable_const_next_generator<Gen>::value
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&& !sprout::detail::has_mem_next_generator<Gen>::value
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&& !sprout::is_input_iterator<Gen>::value
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>::type
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> {
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public:
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static SPROUT_CONSTEXPR decltype(sprout::next(std::declval<Gen&>()))
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get_next_generator(Gen& gen)
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SPROUT_NOEXCEPT_IF_EXPR(sprout::next(std::declval<Gen&>()))
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{
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return sprout::next(gen);
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}
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};
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template<typename Gen>
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struct get_next_generator_impl<
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Gen,
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typename std::enable_if<
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@ -122,9 +103,27 @@ namespace sprout {
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>::type
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> {
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public:
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static SPROUT_CONSTEXPR decltype(sprout::tuples::get<1>(std::declval<Gen&>()))
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get_next_generator(Gen& gen)
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SPROUT_NOEXCEPT_IF_EXPR(sprout::tuples::get<1>(std::declval<Gen&>()))
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static SPROUT_CONSTEXPR decltype(std::declval<Gen>())
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get_next_generator(Gen gen)
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SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen>())
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{
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return gen;
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}
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};
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template<typename Gen>
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struct get_next_generator_impl<
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Gen,
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typename std::enable_if<
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std::is_lvalue_reference<Gen>::value && !std::is_const<typename std::remove_reference<Gen>::type>::value
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&& !sprout::detail::is_substitutable_const_next_generator<Gen>::value
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&& !sprout::detail::has_mem_next_generator<Gen>::value
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&& !sprout::is_input_iterator<Gen>::value
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>::type
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> {
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public:
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static SPROUT_CONSTEXPR decltype(sprout::tuples::get<1>(std::declval<Gen>()))
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get_next_generator(Gen gen)
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SPROUT_NOEXCEPT_IF_EXPR(sprout::tuples::get<1>(std::declval<Gen>()))
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{
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return sprout::tuples::get<1>(gen);
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}
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@ -139,11 +138,11 @@ namespace sprout {
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>::type
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> {
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public:
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static SPROUT_CONSTEXPR decltype(std::declval<Gen&&>().next_generator())
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get_next_generator(Gen&& gen)
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SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen&&>().next_generator())
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static SPROUT_CONSTEXPR decltype(std::declval<Gen>().next_generator())
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get_next_generator(Gen gen)
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SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen>().next_generator())
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{
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typedef decltype(std::declval<Gen&&>().next_generator()) type;
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typedef decltype(std::declval<Gen>().next_generator()) type;
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return sprout::const_reference_cast<type>(sprout::as_const(sprout::move(gen)).next_generator());
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}
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};
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@ -157,9 +156,9 @@ namespace sprout {
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>::type
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> {
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public:
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static SPROUT_CONSTEXPR decltype(std::declval<Gen&&>().next_generator())
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get_next_generator(Gen&& gen)
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SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen&&>().next_generator())
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static SPROUT_CONSTEXPR decltype(std::declval<Gen>().next_generator())
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get_next_generator(Gen gen)
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SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen>().next_generator())
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{
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return sprout::move(gen).next_generator();
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}
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@ -175,11 +174,11 @@ namespace sprout {
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>::type
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> {
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public:
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static SPROUT_CONSTEXPR decltype(sprout::next(std::declval<Gen&&>()))
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get_next_generator(Gen&& gen)
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SPROUT_NOEXCEPT_IF_EXPR(sprout::next(std::declval<Gen&&>()))
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static SPROUT_CONSTEXPR decltype(std::declval<Gen>())
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get_next_generator(Gen gen)
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SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen>())
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{
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return sprout::next(sprout::move(gen));
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return sprout::move(gen);
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}
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};
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template<typename Gen>
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@ -193,9 +192,9 @@ namespace sprout {
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>::type
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> {
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public:
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static SPROUT_CONSTEXPR decltype(sprout::tuples::get<1>(std::declval<Gen&&>()))
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get_next_generator(Gen&& gen)
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SPROUT_NOEXCEPT_IF_EXPR(sprout::tuples::get<1>(std::declval<Gen&&>()))
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static SPROUT_CONSTEXPR decltype(sprout::tuples::get<1>(std::declval<Gen>()))
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get_next_generator(Gen gen)
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SPROUT_NOEXCEPT_IF_EXPR(sprout::tuples::get<1>(std::declval<Gen>()))
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{
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return sprout::tuples::get<1>(sprout::move(gen));
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}
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@ -210,9 +209,9 @@ namespace sprout {
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>::type
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> {
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public:
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static SPROUT_CONSTEXPR decltype(std::declval<Gen const&>().next_generator())
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get_next_generator(Gen const& gen)
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SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen const&>().next_generator())
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static SPROUT_CONSTEXPR decltype(std::declval<Gen>().next_generator())
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get_next_generator(Gen gen)
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SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen>().next_generator())
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{
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return gen.next_generator();
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}
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@ -227,11 +226,11 @@ namespace sprout {
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>::type
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> {
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public:
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static SPROUT_CONSTEXPR decltype(sprout::next(std::declval<Gen const&>()))
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get_next_generator(Gen const& gen)
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SPROUT_NOEXCEPT_IF_EXPR(sprout::next(std::declval<Gen const&>()))
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static SPROUT_CONSTEXPR decltype(std::declval<Gen>())
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get_next_generator(Gen gen)
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SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen>())
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{
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return sprout::next(gen);
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return gen;
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}
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};
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template<typename Gen>
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@ -244,9 +243,9 @@ namespace sprout {
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>::type
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> {
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public:
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static SPROUT_CONSTEXPR decltype(sprout::tuples::get<1>(std::declval<Gen const&>()))
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get_next_generator(Gen const& gen)
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SPROUT_NOEXCEPT_IF_EXPR(sprout::tuples::get<1>(std::declval<Gen const&>()))
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static SPROUT_CONSTEXPR decltype(sprout::tuples::get<1>(std::declval<Gen>()))
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get_next_generator(Gen gen)
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SPROUT_NOEXCEPT_IF_EXPR(sprout::tuples::get<1>(std::declval<Gen>()))
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{
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return sprout::tuples::get<1>(gen);
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}
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317
sprout/generator/detail/next_value.hpp
Normal file
317
sprout/generator/detail/next_value.hpp
Normal file
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@ -0,0 +1,317 @@
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/*=============================================================================
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Copyright (c) 2011-2016 Bolero MURAKAMI
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https://github.com/bolero-MURAKAMI/Sprout
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#ifndef SPROUT_GENERATOR_DETAIL_NEXT_VALUE_HPP
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#define SPROUT_GENERATOR_DETAIL_NEXT_VALUE_HPP
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#include <utility>
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#include <type_traits>
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#include <sprout/config.hpp>
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#include <sprout/type_traits/integral_constant.hpp>
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#include <sprout/type_traits/identity.hpp>
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#include <sprout/iterator/const_reference_cast.hpp>
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#include <sprout/iterator/type_traits/is_iterator_of.hpp>
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#include <sprout/iterator/next.hpp>
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#include <sprout/utility/as_const.hpp>
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#include <sprout/utility/move.hpp>
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#include <sprout/generator/access_functions_fwd.hpp>
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#include <sprout/generator/next_generator.hpp>
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#include <sprout/adl/not_found.hpp>
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namespace sprout_adl {
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sprout::not_found_via_adl generate_next_value(...);
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} // namespace sprout_adl
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namespace sprout {
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namespace detail {
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template<typename T>
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struct has_mem_next_value_test {
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public:
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template<
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typename U = T,
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typename = typename sprout::identity<decltype(std::declval<U>().next_value())>::type
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>
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static sprout::true_type test(int);
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static sprout::false_type test(...);
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};
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#if defined(_MSC_VER) && (_MSC_VER > 1900)
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template<typename T, typename Base_ = typename sprout::identity<decltype(sprout::detail::has_mem_next_value_test<T>::test(0))>::type>
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struct has_mem_next_value
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: public Base_
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{};
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#else
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template<typename T>
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struct has_mem_next_value
|
||||
: public sprout::identity<decltype(sprout::detail::has_mem_next_value_test<T>::test(0))>::type
|
||||
{};
|
||||
#endif
|
||||
|
||||
template<typename T>
|
||||
struct has_function_call_test {
|
||||
public:
|
||||
template<
|
||||
typename U = T,
|
||||
typename = typename sprout::identity<decltype(std::declval<U>()())>::type
|
||||
>
|
||||
static sprout::true_type test(int);
|
||||
static sprout::false_type test(...);
|
||||
};
|
||||
#if defined(_MSC_VER) && (_MSC_VER > 1900)
|
||||
template<typename T, typename Base_ = typename sprout::identity<decltype(sprout::detail::has_function_call_test<T>::test(0))>::type>
|
||||
struct has_function_call
|
||||
: public Base_
|
||||
{};
|
||||
#else
|
||||
template<typename T>
|
||||
struct has_function_call
|
||||
: public sprout::identity<decltype(sprout::detail::has_function_call_test<T>::test(0))>::type
|
||||
{};
|
||||
#endif
|
||||
|
||||
template<typename Gen, typename = void>
|
||||
struct generate_next_value_impl;
|
||||
|
||||
template<typename Gen>
|
||||
struct generate_next_value_impl<
|
||||
Gen,
|
||||
typename std::enable_if<
|
||||
std::is_lvalue_reference<Gen>::value && !std::is_const<typename std::remove_reference<Gen>::type>::value
|
||||
&& sprout::detail::has_mem_next_value<Gen>::value
|
||||
>::type
|
||||
> {
|
||||
public:
|
||||
static SPROUT_CONSTEXPR decltype(std::declval<Gen>().next_value())
|
||||
generate_next_value(Gen gen)
|
||||
SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen>().next_value())
|
||||
{
|
||||
return gen.next_value();
|
||||
}
|
||||
};
|
||||
template<typename Gen>
|
||||
struct generate_next_value_impl<
|
||||
Gen,
|
||||
typename std::enable_if<
|
||||
std::is_lvalue_reference<Gen>::value && !std::is_const<typename std::remove_reference<Gen>::type>::value
|
||||
&& !sprout::detail::has_mem_next_value<Gen>::value
|
||||
&& sprout::is_input_iterator<Gen>::value
|
||||
>::type
|
||||
> {
|
||||
public:
|
||||
static SPROUT_CONSTEXPR decltype(sprout::next(std::declval<Gen>()))
|
||||
generate_next_value(Gen gen)
|
||||
SPROUT_NOEXCEPT_IF_EXPR(sprout::next(std::declval<Gen>()))
|
||||
{
|
||||
return sprout::next(gen);
|
||||
}
|
||||
};
|
||||
template<typename Gen>
|
||||
struct generate_next_value_impl<
|
||||
Gen,
|
||||
typename std::enable_if<
|
||||
std::is_lvalue_reference<Gen>::value && !std::is_const<typename std::remove_reference<Gen>::type>::value
|
||||
&& !sprout::detail::has_mem_next_value<Gen>::value
|
||||
&& !sprout::is_input_iterator<Gen>::value
|
||||
&& sprout::detail::has_function_call<Gen>::value
|
||||
>::type
|
||||
> {
|
||||
public:
|
||||
static SPROUT_CONSTEXPR decltype(std::declval<Gen>()())
|
||||
generate_next_value(Gen gen)
|
||||
SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen>()())
|
||||
{
|
||||
return gen();
|
||||
}
|
||||
};
|
||||
template<typename Gen>
|
||||
struct generate_next_value_impl<
|
||||
Gen,
|
||||
typename std::enable_if<
|
||||
std::is_lvalue_reference<Gen>::value && !std::is_const<typename std::remove_reference<Gen>::type>::value
|
||||
&& !sprout::detail::has_mem_next_value<Gen>::value
|
||||
&& !sprout::is_input_iterator<Gen>::value
|
||||
&& !sprout::detail::has_function_call<Gen>::value
|
||||
>::type
|
||||
> {
|
||||
public:
|
||||
static SPROUT_CONSTEXPR decltype(sprout::generators::next_value(sprout::generators::next_generator(std::declval<Gen>())))
|
||||
generate_next_value(Gen gen)
|
||||
SPROUT_NOEXCEPT_IF_EXPR(sprout::generators::next_value(sprout::generators::next_generator(std::declval<Gen>())))
|
||||
{
|
||||
return sprout::generators::next_value(sprout::generators::next_generator(gen));
|
||||
}
|
||||
};
|
||||
|
||||
template<typename Gen>
|
||||
struct generate_next_value_impl<
|
||||
Gen,
|
||||
typename std::enable_if<
|
||||
std::is_rvalue_reference<Gen>::value && !std::is_const<typename std::remove_reference<Gen>::type>::value
|
||||
&& sprout::detail::has_mem_next_value<Gen>::value
|
||||
>::type
|
||||
> {
|
||||
public:
|
||||
static SPROUT_CONSTEXPR decltype(std::declval<Gen>().next_value())
|
||||
generate_next_value(Gen gen)
|
||||
SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen>().next_value())
|
||||
{
|
||||
return sprout::move(gen).next_value();
|
||||
}
|
||||
};
|
||||
template<typename Gen>
|
||||
struct generate_next_value_impl<
|
||||
Gen,
|
||||
typename std::enable_if<
|
||||
std::is_rvalue_reference<Gen>::value && !std::is_const<typename std::remove_reference<Gen>::type>::value
|
||||
&& !sprout::detail::has_mem_next_value<Gen>::value
|
||||
&& sprout::is_input_iterator<Gen>::value
|
||||
>::type
|
||||
> {
|
||||
public:
|
||||
static SPROUT_CONSTEXPR decltype(sprout::next(std::declval<Gen>()))
|
||||
generate_next_value(Gen gen)
|
||||
SPROUT_NOEXCEPT_IF_EXPR(sprout::next(std::declval<Gen>()))
|
||||
{
|
||||
return sprout::next(sprout::move(gen));
|
||||
}
|
||||
};
|
||||
template<typename Gen>
|
||||
struct generate_next_value_impl<
|
||||
Gen,
|
||||
typename std::enable_if<
|
||||
std::is_rvalue_reference<Gen>::value && !std::is_const<typename std::remove_reference<Gen>::type>::value
|
||||
&& !sprout::detail::has_mem_next_value<Gen>::value
|
||||
&& !sprout::is_input_iterator<Gen>::value
|
||||
&& sprout::detail::has_function_call<Gen>::value
|
||||
>::type
|
||||
> {
|
||||
public:
|
||||
static SPROUT_CONSTEXPR decltype(std::declval<Gen>()())
|
||||
generate_next_value(Gen gen)
|
||||
SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen>()())
|
||||
{
|
||||
return sprout::move(gen)();
|
||||
}
|
||||
};
|
||||
template<typename Gen>
|
||||
struct generate_next_value_impl<
|
||||
Gen,
|
||||
typename std::enable_if<
|
||||
std::is_rvalue_reference<Gen>::value && !std::is_const<typename std::remove_reference<Gen>::type>::value
|
||||
&& !sprout::detail::has_mem_next_value<Gen>::value
|
||||
&& !sprout::is_input_iterator<Gen>::value
|
||||
&& !sprout::detail::has_function_call<Gen>::value
|
||||
>::type
|
||||
> {
|
||||
public:
|
||||
static SPROUT_CONSTEXPR decltype(sprout::generators::next_value(sprout::generators::next_generator(std::declval<Gen>())))
|
||||
generate_next_value(Gen gen)
|
||||
SPROUT_NOEXCEPT_IF_EXPR(sprout::generators::next_value(sprout::generators::next_generator(std::declval<Gen>())))
|
||||
{
|
||||
return sprout::generators::next_value(sprout::generators::next_generator(sprout::move(gen)));
|
||||
}
|
||||
};
|
||||
|
||||
template<typename Gen>
|
||||
struct generate_next_value_impl<
|
||||
Gen,
|
||||
typename std::enable_if<
|
||||
std::is_reference<Gen>::value && std::is_const<typename std::remove_reference<Gen>::type>::value
|
||||
&& sprout::detail::has_mem_next_value<Gen>::value
|
||||
>::type
|
||||
> {
|
||||
public:
|
||||
static SPROUT_CONSTEXPR decltype(std::declval<Gen>().next_value())
|
||||
generate_next_value(Gen gen)
|
||||
SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen>().next_value())
|
||||
{
|
||||
return gen.next_value();
|
||||
}
|
||||
};
|
||||
template<typename Gen>
|
||||
struct generate_next_value_impl<
|
||||
Gen,
|
||||
typename std::enable_if<
|
||||
std::is_reference<Gen>::value && std::is_const<typename std::remove_reference<Gen>::type>::value
|
||||
&& !sprout::detail::has_mem_next_value<Gen>::value
|
||||
&& sprout::is_input_iterator<Gen>::value
|
||||
>::type
|
||||
> {
|
||||
public:
|
||||
static SPROUT_CONSTEXPR decltype(sprout::next(std::declval<Gen>()))
|
||||
generate_next_value(Gen gen)
|
||||
SPROUT_NOEXCEPT_IF_EXPR(sprout::next(std::declval<Gen>()))
|
||||
{
|
||||
return sprout::next(gen);
|
||||
}
|
||||
};
|
||||
template<typename Gen>
|
||||
struct generate_next_value_impl<
|
||||
Gen,
|
||||
typename std::enable_if<
|
||||
std::is_reference<Gen>::value && std::is_const<typename std::remove_reference<Gen>::type>::value
|
||||
&& !sprout::detail::has_mem_next_value<Gen>::value
|
||||
&& !sprout::is_input_iterator<Gen>::value
|
||||
&& sprout::detail::has_function_call<Gen>::value
|
||||
>::type
|
||||
> {
|
||||
public:
|
||||
static SPROUT_CONSTEXPR decltype(std::declval<Gen>()())
|
||||
generate_next_value(Gen gen)
|
||||
SPROUT_NOEXCEPT_IF_EXPR(std::declval<Gen>()())
|
||||
{
|
||||
return gen();
|
||||
}
|
||||
};
|
||||
template<typename Gen>
|
||||
struct generate_next_value_impl<
|
||||
Gen,
|
||||
typename std::enable_if<
|
||||
std::is_reference<Gen>::value && std::is_const<typename std::remove_reference<Gen>::type>::value
|
||||
&& !sprout::detail::has_mem_next_value<Gen>::value
|
||||
&& !sprout::is_input_iterator<Gen>::value
|
||||
&& !sprout::detail::has_function_call<Gen>::value
|
||||
>::type
|
||||
> {
|
||||
public:
|
||||
static SPROUT_CONSTEXPR decltype(sprout::generators::next_value(sprout::generators::next_generator(std::declval<Gen>())))
|
||||
generate_next_value(Gen gen)
|
||||
SPROUT_NOEXCEPT_IF_EXPR(sprout::generators::next_value(sprout::generators::next_generator(std::declval<Gen>())))
|
||||
{
|
||||
return sprout::generators::next_value(sprout::generators::next_generator(gen));
|
||||
}
|
||||
};
|
||||
} // namespace detail
|
||||
} // namespace sprout
|
||||
|
||||
namespace sprout_generator_detail {
|
||||
template<typename Gen>
|
||||
inline SPROUT_CONSTEXPR decltype(sprout::detail::generate_next_value_impl<Gen&>::generate_next_value(std::declval<Gen&>()))
|
||||
generate_next_value(Gen& gen)
|
||||
SPROUT_NOEXCEPT_IF_EXPR(sprout::detail::generate_next_value_impl<Gen&>::generate_next_value(std::declval<Gen&>()))
|
||||
{
|
||||
return sprout::detail::generate_next_value_impl<Gen&>::generate_next_value(gen);
|
||||
}
|
||||
template<typename Gen>
|
||||
inline SPROUT_CONSTEXPR typename std::enable_if<
|
||||
!std::is_const<Gen>::value && !std::is_volatile<Gen>::value && !std::is_reference<Gen>::value,
|
||||
decltype(sprout::detail::generate_next_value_impl<Gen&&>::generate_next_value(std::declval<Gen&&>()))
|
||||
>::type
|
||||
generate_next_value(Gen&& gen)
|
||||
SPROUT_NOEXCEPT_IF_EXPR(sprout::detail::generate_next_value_impl<Gen&&>::generate_next_value(std::declval<Gen&&>()))
|
||||
{
|
||||
return sprout::detail::generate_next_value_impl<Gen&&>::generate_next_value(sprout::move(gen));
|
||||
}
|
||||
template<typename Gen>
|
||||
inline SPROUT_CONSTEXPR decltype(sprout::detail::generate_next_value_impl<Gen const&>::generate_next_value(std::declval<Gen const&>()))
|
||||
generate_next_value(Gen const& gen)
|
||||
SPROUT_NOEXCEPT_IF_EXPR(sprout::detail::generate_next_value_impl<Gen const&>::generate_next_value(std::declval<Gen const&>()))
|
||||
{
|
||||
return sprout::detail::generate_next_value_impl<Gen const&>::generate_next_value(gen);
|
||||
}
|
||||
} // namespace sprout_generator_detail
|
||||
|
||||
#endif // #ifndef SPROUT_GENERATOR_DETAIL_NEXT_VALUE_HPP
|
||||
Loading…
Add table
Add a link
Reference in a new issue