RecordRef< VAL > Class Template Reference

#include "lib/diff/record.hpp"

Description

template<typename VAL>
class lib::diff::RecordRef< VAL >

wrapped record reference.

A helper for lib::GenNode and the diff representation. RecordRef is copyable and movable, but like a reference can not be rebound. It can be used to refer to a subtree within the diff representation, without the need to copy.

Remarks

this is almost identical to std::ref, with the notable difference that it can be default-created into "bottom" state; this also implies to have a NULL check on dereferentiation.

Definition at line 620 of file record.hpp.

Public Member Functions
	RecordRef () noexcept
	by default create an invalid ("bottom") reference
	RecordRef (Target &o) noexcept
	create a reference bound to the given target; can not be rebound
	RecordRef (Target &&)=delete
	prevent moving into black hole
	RecordRef (RecordRef const &)=default
	RecordRef (RecordRef &&)=default
bool	empty () const
Target *	get () const noexcept
	operator bool () const
	operator string () const
	operator Target & () const
	target is accessed by cast More...
RecordRef &	operator= (RecordRef const &)=delete
	references can not be reassigned
RecordRef &	operator= (RecordRef &)=delete
RecordRef &	operator= (RecordRef &&o)
	assignment is not allowed, but moving is

Friends
bool	operator!= (RecordRef const &r1, RecordRef const &r2)
bool	operator== (RecordRef const &r1, RecordRef const &r2)

Private Types
using	Target = Record< VAL >

Private Attributes
Target *	record_

Member Function Documentation

operator Target &()

operator Target & ( ) const

inline

target is accessed by cast

Exceptions

error::Logic

on bottom reference

Definition at line 673 of file record.hpp.

Friends And Related Function Documentation

operator==

bool operator== ( RecordRef< VAL > const &  r1, RecordRef< VAL > const &  r2  )

friend

Note

equality of references (instance pointers), not targets

Definition at line 695 of file record.hpp.

Collaboration diagram for RecordRef< VAL >:

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

• record.hpp