Numpy< PRIMITIVE > Class Template Reference

Builds a NumpyArray which describes multi-dimensional data of PRIMITIVE type. More...

#include <LayoutBuilder.h>

Public Member Functions
	Numpy ()
	Creates a new Numpy layout builder by allocating a new buffer, using AWKWARD_LAYOUTBUILDER_DEFAULT_OPTIONS for initializing the buffer.
	Numpy (const awkward::BuilderOptions &options)
	Creates a new Numpy layout builder by allocating a new buffer, taking options from BuilderOptions for initializing the buffer.
void	append (PRIMITIVE x) noexcept
	Inserts a PRIMITIVE type data.
void	extend (PRIMITIVE *ptr, size_t size) noexcept
	Inserts an entire array of PRIMITIVE type data.
const std::string &	parameters () const noexcept
	Parameters for the builder form.
void	set_parameters (std::string parameter) noexcept
	Sets the form parameters.
void	set_id (size_t &id) noexcept
	Assigns a unique ID to each node.
void	clear () noexcept
	Discards the accumulated data in the builder.
size_t	length () const noexcept
	Current length of the data.
bool	is_valid (std::string &) const noexcept
	Checks for validity and consistency.
void	buffer_nbytes (std::map< std::string, size_t > &names_nbytes) const noexcept
	Retrieves the name and size (in bytes) of the buffer.
void	to_buffers (std::map< std::string, void * > &buffers) const noexcept
	Copies and concatenates all the accumulated data in the builder to a user-defined pointer.
void	to_char_buffers (std::map< std::string, uint8_t * > &buffers) const noexcept
	Copies and concatenates all the accumulated data in the builder to a map of user-allocated buffers.
std::string	form () const
	Generates a unique description of the builder and its contents in the form of a JSON-like string.

Detailed Description

template<typename PRIMITIVE>
class awkward::LayoutBuilder::Numpy< PRIMITIVE >

Builds a NumpyArray which describes multi-dimensional data of PRIMITIVE type.

Template Parameters

PRIMITIVE

The type of data in NumpyArray.

Constructor & Destructor Documentation

Numpy() [1/2]

template<typename PRIMITIVE >

Numpy ( )

inline

Creates a new Numpy layout builder by allocating a new buffer, using AWKWARD_LAYOUTBUILDER_DEFAULT_OPTIONS for initializing the buffer.

Numpy() [2/2]

template<typename PRIMITIVE >

Numpy ( const awkward::BuilderOptions &  options )

inline

Creates a new Numpy layout builder by allocating a new buffer, taking options from BuilderOptions for initializing the buffer.

Parameters

options

Initial size configuration of a buffer.

Member Function Documentation

append()

template<typename PRIMITIVE >

void append ( PRIMITIVE  x )

inlinenoexcept

Inserts a PRIMITIVE type data.

buffer_nbytes()

template<typename PRIMITIVE >

void buffer_nbytes ( std::map< std::string, size_t > &  names_nbytes ) const

inlinenoexcept

Retrieves the name and size (in bytes) of the buffer.

clear()

template<typename PRIMITIVE >

void clear ( )

inlinenoexcept

Discards the accumulated data in the builder.

extend()

template<typename PRIMITIVE >

void extend ( PRIMITIVE *  ptr, size_t  size  )

inlinenoexcept

Inserts an entire array of PRIMITIVE type data.

Just an interface; not actually faster than calling append many times.

form()

template<typename PRIMITIVE >

std::string form ( ) const

inline

Generates a unique description of the builder and its contents in the form of a JSON-like string.

is_valid()

template<typename PRIMITIVE >

bool is_valid ( std::string &  ) const

inlinenoexcept

Checks for validity and consistency.

length()

template<typename PRIMITIVE >

size_t length ( ) const

inlinenoexcept

Current length of the data.

parameters()

template<typename PRIMITIVE >

const std::string & parameters ( ) const

inlinenoexcept

Parameters for the builder form.

set_id()

template<typename PRIMITIVE >

void set_id ( size_t &  id )

inlinenoexcept

Assigns a unique ID to each node.

set_parameters()

template<typename PRIMITIVE >

void set_parameters ( std::string  parameter )

inlinenoexcept

Sets the form parameters.

to_buffers()

template<typename PRIMITIVE >

void to_buffers ( std::map< std::string, void * > &  buffers ) const

inlinenoexcept

Copies and concatenates all the accumulated data in the builder to a user-defined pointer.

Used to fill the buffers map by allocating it with user-defined pointers using the same name and size (in bytes) obtained from buffer_nbytes.

to_char_buffers()

template<typename PRIMITIVE >

void to_char_buffers ( std::map< std::string, uint8_t * > &  buffers ) const

inlinenoexcept

Copies and concatenates all the accumulated data in the builder to a map of user-allocated buffers.

The map keys and the buffer sizes are obtained from buffer_nbytes

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

• /home/runner/work/awkward/awkward/awkward-cpp/header-only/layout-builder/awkward/LayoutBuilder.h