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SliceGenerator Class Reference

Generator for lazy slicing. Used to avoid materializing a VirtualArray before its content is needed (in case its content is never needed). More...

#include <ArrayGenerator.h>

Inheritance diagram for SliceGenerator:
ArrayGenerator

Public Member Functions

 SliceGenerator (const FormPtr &form, int64_t length, const ContentPtr &content, const Slice &slice)
 
const ContentPtr content () const
 
const Slice slice () const
 
const ContentPtr generate () const override
 Creates an array but does not check it against the form. More...
 
void caches (std::vector< ArrayCachePtr > &out) const override
 Accumulates all the unique #ArrayCache objects from nested #VirtualArray nodes. (Uniqueness is determined by pointer value.) More...
 
const std::string tostring_part (const std::string &indent, const std::string &pre, const std::string &post) const override
 Returns a string representation of this ArrayGenerator. More...
 
const std::shared_ptr< ArrayGeneratorshallow_copy () const override
 Copies this ArrayGenerator, referencing any contents. More...
 
const std::shared_ptr< ArrayGeneratorwith_form (const FormPtr &form) const override
 Return a copy of this ArrayGenerator with a different form (or a now-known form, whereas it might have been unknown before). More...
 
const std::shared_ptr< ArrayGeneratorwith_length (int64_t length) const override
 Return a copy of this ArrayGenerator with a different length (or a now-known length, whereas it might have been unknown before). More...
 
virtual bool referentially_equal (const ArrayGeneratorPtr &other) const override
 Returns true if this generator has all the same buffers and parameters as other; false otherwise. More...
 
- Public Member Functions inherited from ArrayGenerator
 ArrayGenerator (const FormPtr &form, int64_t length)
 Called by subclasses to set the form of an ArrayGenerator. More...
 
virtual ~ArrayGenerator ()
 Virtual destructor acts as a first non-inline virtual function that determines a specific translation unit in which vtable shall be emitted. More...
 
const FormPtr form () const
 The Form the generated array is expected to take; may be nullptr. More...
 
int64_t length () const
 The length the generated array is expected to have; may be negative to indicate that the length is unknown. More...
 
virtual const ContentPtr generate () const =0
 Creates an array but does not check it against the form. More...
 
const ContentPtr generate_and_check ()
 Creates an array and checks it against the form. If form was not available initially, no check is made and the form inferred from the result is saved in case it is useful later. More...
 
virtual void caches (std::vector< ArrayCachePtr > &out) const =0
 Accumulates all the unique #ArrayCache objects from nested #VirtualArray nodes. (Uniqueness is determined by pointer value.) More...
 
virtual const std::string tostring_part (const std::string &indent, const std::string &pre, const std::string &post) const =0
 Returns a string representation of this ArrayGenerator. More...
 
virtual const std::shared_ptr< ArrayGeneratorshallow_copy () const =0
 Copies this ArrayGenerator, referencing any contents. More...
 
virtual const std::shared_ptr< ArrayGeneratorwith_form (const FormPtr &form) const =0
 Return a copy of this ArrayGenerator with a different form (or a now-known form, whereas it might have been unknown before). More...
 
virtual const std::shared_ptr< ArrayGeneratorwith_length (int64_t length) const =0
 Return a copy of this ArrayGenerator with a different length (or a now-known length, whereas it might have been unknown before). More...
 
virtual bool referentially_equal (const ArrayGeneratorPtr &other) const =0
 Returns true if this generator has all the same buffers and parameters as other; false otherwise. More...
 

Protected Attributes

const ContentPtr content_
 
const Slice slice_
 
- Protected Attributes inherited from ArrayGenerator
const FormPtr form_
 
FormPtr inferred_form_ {nullptr}
 
int64_t length_
 

Detailed Description

Generator for lazy slicing. Used to avoid materializing a VirtualArray before its content is needed (in case its content is never needed).

Constructor & Destructor Documentation

◆ SliceGenerator()

SliceGenerator ( const FormPtr form,
int64_t  length,
const ContentPtr content,
const Slice slice 
)

Member Function Documentation

◆ caches()

void caches ( std::vector< ArrayCachePtr > &  out) const
overridevirtual

Accumulates all the unique #ArrayCache objects from nested #VirtualArray nodes. (Uniqueness is determined by pointer value.)

Implements ArrayGenerator.

◆ content()

const ContentPtr content ( ) const

◆ generate()

const ContentPtr generate ( ) const
overridevirtual

Creates an array but does not check it against the form.

Implements ArrayGenerator.

◆ referentially_equal()

virtual bool referentially_equal ( const ArrayGeneratorPtr other) const
overridevirtual

Returns true if this generator has all the same buffers and parameters as other; false otherwise.

Parameters
otherThe generator to compare this with.

Implements ArrayGenerator.

◆ shallow_copy()

const std::shared_ptr< ArrayGenerator > shallow_copy ( ) const
overridevirtual

Copies this ArrayGenerator, referencing any contents.

Implements ArrayGenerator.

◆ slice()

const Slice slice ( ) const

◆ tostring_part()

const std::string tostring_part ( const std::string &  indent,
const std::string &  pre,
const std::string &  post 
) const
overridevirtual

Returns a string representation of this ArrayGenerator.

Implements ArrayGenerator.

◆ with_form()

const std::shared_ptr< ArrayGenerator > with_form ( const FormPtr form) const
overridevirtual

Return a copy of this ArrayGenerator with a different form (or a now-known form, whereas it might have been unknown before).

Implements ArrayGenerator.

◆ with_length()

const std::shared_ptr< ArrayGenerator > with_length ( int64_t  length) const
overridevirtual

Return a copy of this ArrayGenerator with a different length (or a now-known length, whereas it might have been unknown before).

Implements ArrayGenerator.

Member Data Documentation

◆ content_

const ContentPtr content_
protected

◆ slice_

const Slice slice_
protected

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