CrossRef< T > Class Template Reference

The wrapper (decorator) for cross-referencing unresolved values at parse time. More...

Detailed Description

template<typename T>
class neml2::CrossRef< T >

The wrapper (decorator) for cross-referencing unresolved values at parse time.

All tokens in the input files are essentially strings, and it is not always possible to represent all quantities as strings. For example, more sophisticated tensor manufacturing methods require inputs like batch size, device type, etc., and cannot be specified with a single string literal. In such scenarios, it is preferable to interpret the string literal as a "label" cross-referencing another object. This wrapper provides cross-referencing capabilities to most input file types. The object name is used as the label, and the object value is not resolved until implicit conversion occurs.

Template Parameters

T	The final resolved type

#include <CrossRef.h>

Public Member Functions
	CrossRef ()=default
	CrossRef (std::string raw)
CrossRef< T > &	operator= (const std::string &other)
	Assignment operator.
	operator T () const
	Implicit conversion operator.
bool	operator== (const CrossRef< T > &other) const
	Test equality.
const std::string &	raw () const
	Get the raw string literal.
	operator Tensor () const

Friends
std::stringstream &	operator>> (std::stringstream &in, CrossRef< T > &)
	Stream into a CrossRef (used by Parsers to extract input options)

Constructor & Destructor Documentation

CrossRef() [1/2]

template<typename T >

CrossRef ( )

default

CrossRef() [2/2]

template<typename T >

CrossRef ( std::string raw )

inline

Member Function Documentation

operator T()

template<typename T >

operator T

(

)

const

Implicit conversion operator.

The underlying string is parsed and used to resolve the cross-reference. It is assumed that the cross-referenced object has already been manufactured at this point.

operator Tensor()

operator Tensor

(

)

const

operator=()

template<typename T >

CrossRef< T > & operator=

(

const std::string &

other

)

Assignment operator.

This simply assigns the string without parsing and resolving the cross-reference

operator==()

template<typename T >

bool operator== ( const CrossRef< T > & other ) const

inline

Test equality.

raw()

template<typename T >

const std::string & raw ( ) const

inline

Get the raw string literal.

Returns

const std::string& The raw string literal.

Friends And Related Symbol Documentation

operator>>

template<typename T >

std::stringstream & operator>> ( std::stringstream & in, CrossRef< T > & cr )

friend

Stream into a CrossRef (used by Parsers to extract input options)