this class is used to safely manage calls to AbstractQoreNode::getStringRepresentation() when a QoreStringNode value is needed, stack only, may not be dynamically allocated More...

#include <QoreStringNode.h>

Public Member Methods
DLLEXPORT	QoreStringNodeValueHelper (const QoreValue n, const QoreEncoding enc, ExceptionSink xsink)
	gets the QoreString representation and ensures that it's in the desired encoding More...

DLLEXPORT	~QoreStringNodeValueHelper ()
	destroys the object and dereferences the QoreStringNode if it is a temporary pointer

DLLEXPORT QoreStringNode *	getReferencedValue ()
	returns a referenced value - the caller will own the reference More...

DLLLOCAL bool	is_temp () const
	returns true if the referenced being managed is temporary

const DLLLOCAL QoreStringNode *	operator* ()
	returns the object being managed More...

const DLLLOCAL QoreStringNode *	operator-> ()
	returns the object being managed More...

Detailed Description

this class is used to safely manage calls to AbstractQoreNode::getStringRepresentation() when a QoreStringNode value is needed, stack only, may not be dynamically allocated

the QoreStringNode value returned by this function is managed safely in an exception-safe way with this class

QoreStringNodeValueHelper str(n);
printf("str='%s'\n", str->getBuffer());
return str.getReferencedValue();

Constructor & Destructor Documentation

◆ QoreStringNodeValueHelper()

DLLEXPORT QoreStringNodeValueHelper::QoreStringNodeValueHelper	(	const QoreValue	n,
		const QoreEncoding *	enc,
		ExceptionSink *	xsink
	)

gets the QoreString representation and ensures that it's in the desired encoding

a Qore-language exception may be thrown if an encoding error occurs

// get a QoreString value from "node" and ensure it's in UTF-8 encoding
QoreStringNodeValueHelper t(node, QCS_UTF8, xsink);
// return if there was an exception converting the encoding to UTF-8
if (*xsink)
   return 0;
 
// use the string value
return new MStringData(t->getBuffer(), MEncoding::M_ASCII);

Member Function Documentation

◆ getReferencedValue()

DLLEXPORT QoreStringNode* QoreStringNodeValueHelper::getReferencedValue ( )

returns a referenced value - the caller will own the reference

The string is referenced if necessary (if it was a not a temporary value)

Returns: the string value, where the caller will own the reference count

◆ operator*()

const DLLLOCAL QoreStringNode* QoreStringNodeValueHelper::operator* ( )

inline

returns the object being managed

Returns: the object being managed

◆ operator->()

const DLLLOCAL QoreStringNode* QoreStringNodeValueHelper::operator-> ( )