ValueEvalRefHolder Class Reference

evaluates an AbstractQoreNode and dereferences the stored value in the destructor More...

#include <QoreValue.h>

Inheritance diagram for ValueEvalRefHolder:

Collaboration diagram for ValueEvalRefHolder:

Public Member Functions
DLLEXPORT	ValueEvalRefHolder (const AbstractQoreNode *exp, ExceptionSink *xs)
	evaluates the exp argument
DLLEXPORT	ValueEvalRefHolder (const QoreValue exp, ExceptionSink *xs)
	evaluates the exp argument
DLLEXPORT	ValueEvalRefHolder (ExceptionSink *xs)
	creates the object with with no evaluation
DLLEXPORT int	eval (const AbstractQoreNode *exp)
	evaluates the argument, returns -1 for error, 0 = OK
DLLEXPORT int	eval (const QoreValue exp)
	evaluates the argument, returns -1 for error, 0 = OK
Public Member Functions inherited from ValueOptionalRefHolder
DLLLOCAL	ValueOptionalRefHolder (ExceptionSink *xs)
	creates an empty object
DLLLOCAL	ValueOptionalRefHolder (QoreValue n_v, bool nd, ExceptionSink *xs)
	creates the object with the given values
DLLLOCAL void	clearTemp ()
	sets needs_deref = false
DLLEXPORT void	ensureReferencedValue ()
DLLEXPORT QoreValue	getReferencedValue ()
	returns a referenced value; caller owns the reference; the current object is not disturbed
DLLLOCAL bool	isTemp () const
	returns true if the value is temporary (needs dereferencing)
DLLLOCAL	operator bool () const
	returns true if the value is not NOTHING
DLLLOCAL void	setValue (QoreValue nv)
	assigns a new non-temporary value
DLLLOCAL void	setValue (QoreValue nv, bool temp)
	assigns a new value
DLLLOCAL AbstractQoreNode *	takeNode (bool &nd)
	returns the stored AbstractQoreNode pointer and sets the dereference flag as an output variable
template<typename T>
DLLLOCAL T *	takeReferencedNode ()
	returns the stored node value and leaves the current object empty
DLLEXPORT QoreValue	takeReferencedValue ()
	returns a QoreValue after incrementing the reference count of any node value stored if necessary
DLLLOCAL QoreValue	takeValue (bool &nd)
	returns the stored value and sets the dereference flag as an output variable
DLLLOCAL void	takeValueFrom (ValueOptionalRefHolder &val)
	returns the stored value which must be dereferenced if it is a node object (i.e. type == QV_Node)
Public Member Functions inherited from ValueHolderBase
DLLLOCAL	ValueHolderBase (ExceptionSink *xs)
	creates an ampty object
DLLLOCAL	ValueHolderBase (QoreValue n_v, ExceptionSink *xs)
	creates the object with the given value
DLLLOCAL QoreValue &	operator* ()
	returns the value being managed
DLLLOCAL const QoreValue &	operator* () const
	returns the value being managed
DLLLOCAL QoreValue *	operator-> ()
	returns the value being managed
DLLLOCAL const QoreValue *	operator-> () const
	returns the value being managed

Protected Member Functions
DLLLOCAL int	evalIntern (const AbstractQoreNode *exp)
	evaluates the argument, returns -1 for error, 0 = OK
DLLLOCAL int	evalIntern (const QoreValue &exp)
	evaluates the argument, returns -1 for error, 0 = OK

Additional Inherited Members
Protected Attributes inherited from ValueOptionalRefHolder
bool	needs_deref
	flag indicating if the value should be dereferenced in the destructor or not
Protected Attributes inherited from ValueHolderBase
QoreValue	v
	the value held
ExceptionSink *	xsink
	for possible Qore-language exceptions

Detailed Description

evaluates an AbstractQoreNode and dereferences the stored value in the destructor

Constructor & Destructor Documentation

ValueEvalRefHolder() [1/2]

DLLEXPORT ValueEvalRefHolder::ValueEvalRefHolder	(	const QoreValue	exp,
		ExceptionSink *	xs )

evaluates the exp argument

Since

Qore 0.9

ValueEvalRefHolder() [2/2]

DLLEXPORT ValueEvalRefHolder::ValueEvalRefHolder

(

ExceptionSink *

xs

)

creates the object with with no evaluation

Since

Qore 0.8.13.1

Member Function Documentation

eval() [1/2]

DLLEXPORT int ValueEvalRefHolder::eval

(

const AbstractQoreNode *

exp

)

evaluates the argument, returns -1 for error, 0 = OK

Since

Qore 0.8.13.1

eval() [2/2]

DLLEXPORT int ValueEvalRefHolder::eval

(

const QoreValue

exp

)

evaluates the argument, returns -1 for error, 0 = OK

Since

Qore 0.9

evalIntern() [1/2]

DLLLOCAL int ValueEvalRefHolder::evalIntern ( const AbstractQoreNode * exp )

protected

evaluates the argument, returns -1 for error, 0 = OK

Since

Qore 0.8.13.1

evalIntern() [2/2]

DLLLOCAL int ValueEvalRefHolder::evalIntern ( const QoreValue & exp )

protected

evaluates the argument, returns -1 for error, 0 = OK

Since

Qore 0.9

---

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

• include/qore/QoreValue.h