folly::gen::detail::Batch::Generator< Value, Source, StorageType, VectorType > Class Template Reference

#include <Base-inl.h>

Inheritance diagram for folly::gen::detail::Batch::Generator< Value, Source, StorageType, VectorType >:

Public Member Functions
	Generator (Source source, size_t batchSize)
template<class Handler >
bool	apply (Handler &&handler) const
Public Member Functions inherited from folly::gen::GenImpl< VectorType &, Generator< Value, Source, StorageType, VectorType > >
bool	apply (Handler &&handler) const
void	foreach (Body &&body) const
Public Member Functions inherited from folly::gen::FBounded< Self >
const Self &	self () const
Self &	self ()

Static Public Attributes
static constexpr bool	infinite = Source::infinite
Static Public Attributes inherited from folly::gen::GenImpl< VectorType &, Generator< Value, Source, StorageType, VectorType > >
static constexpr bool	infinite

Private Attributes
Source	source_
size_t	batchSize_

Additional Inherited Members
Public Types inherited from folly::gen::GenImpl< VectorType &, Generator< Value, Source, StorageType, VectorType > >
typedef VectorType &	ValueType
typedef std::decay< VectorType & >::type	StorageType
Protected Member Functions inherited from folly::gen::GenImpl< VectorType &, Generator< Value, Source, StorageType, VectorType > >
	GenImpl ()=default
	GenImpl (GenImpl &&)=default
	GenImpl (const GenImpl &)=default
GenImpl &	operator= (GenImpl &&)=default
GenImpl &	operator= (const GenImpl &)=default

Detailed Description

template<class Value, class Source, class StorageType = typename std::decay<Value>::type, class VectorType = std::vector<StorageType>>
class folly::gen::detail::Batch::Generator< Value, Source, StorageType, VectorType >

Definition at line 1458 of file Base-inl.h.

Constructor & Destructor Documentation

template<class Value , class Source , class StorageType = typename std::decay<Value>::type, class VectorType = std::vector<StorageType>>

folly::gen::detail::Batch::Generator< Value, Source, StorageType, VectorType >::Generator ( Source  source, size_t  batchSize  )

inlineexplicit

Definition at line 1465 of file Base-inl.h.

        : source_(std::move(source)), batchSize_(batchSize) {}

Member Function Documentation

template<class Value , class Source , class StorageType = typename std::decay<Value>::type, class VectorType = std::vector<StorageType>>

template<class Handler >

bool folly::gen::detail::Batch::Generator< Value, Source, StorageType, VectorType >::apply ( Handler &&  handler ) const

inline

Definition at line 1469 of file Base-inl.h.

References handler(), value, and testing::Value().

                                        {
      VectorType batch_;
      batch_.reserve(batchSize_);
      bool shouldContinue = source_.apply([&](Value value) -> bool {
        batch_.push_back(std::forward<Value>(value));
        if (batch_.size() == batchSize_) {
          bool needMore = handler(batch_);
          batch_.clear();
          return needMore;
        }
        // Always need more if the handler is not called.
        return true;
      });
      // Flush everything, if and only if `handler` hasn't returned false.
      if (shouldContinue && !batch_.empty()) {
        shouldContinue = handler(batch_);
        batch_.clear();
      }
      return shouldContinue;
    }

Member Data Documentation

template<class Value , class Source , class StorageType = typename std::decay<Value>::type, class VectorType = std::vector<StorageType>>

size_t folly::gen::detail::Batch::Generator< Value, Source, StorageType, VectorType >::batchSize_

private

Definition at line 1462 of file Base-inl.h.

template<class Value , class Source , class StorageType = typename std::decay<Value>::type, class VectorType = std::vector<StorageType>>

constexpr bool folly::gen::detail::Batch::Generator< Value, Source, StorageType, VectorType >::infinite = Source::infinite

static

Definition at line 1491 of file Base-inl.h.

template<class Value , class Source , class StorageType = typename std::decay<Value>::type, class VectorType = std::vector<StorageType>>

Source folly::gen::detail::Batch::Generator< Value, Source, StorageType, VectorType >::source_

private

Definition at line 1461 of file Base-inl.h.

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The documentation for this class was generated from the following file:

• proxygen/folly/folly/gen/Base-inl.h