Qore's arbitrary-precision number value type, dynamically-allocated only, reference counted. More...

#include <QoreNumberNode.h>

Inheritance diagram for QoreNumberNode:

Collaboration diagram for QoreNumberNode:

Public Member Functions
DLLEXPORT	QoreNumberNode (const AbstractQoreNode *n)
	creates a new number value from the node, if not possible then the new number will be assigned 0

DLLEXPORT	QoreNumberNode (double f)
	creates a new number value and assigns the initial value to it More...

DLLEXPORT	QoreNumberNode (int64 i)
	creates a new number value and assigns the initial value to it More...

DLLEXPORT	QoreNumberNode (const char *str)
	creates a new number value and assigns the initial value to it More...

DLLEXPORT	QoreNumberNode (const char *str, unsigned prec)
	creates a new number value and assigns the initial value to it More...

DLLEXPORT	QoreNumberNode ()
	creates a new numbering-point value and assigns it to 0

DLLEXPORT	QoreNumberNode (const QoreNumberNode &old)
	creates a copy of the object

DLLEXPORT int	compare (const QoreNumberNode &n) const
	compares the argument to the current object, returns -1 if the current object is less than the argument, 0 if equals, and 1 if greater than the argument

DLLEXPORT int	compare (int64 n) const
	compares the argument to the current object, returns -1 if the current object is less than the argument, 0 if equals, and 1 if greater than the argument

DLLEXPORT int	compare (double n) const
	compares the argument to the current object, returns -1 if the current object is less than the argument, 0 if equals, and 1 if greater than the argument

DLLEXPORT QoreNumberNode *	doDivideBy (const QoreNumberNode &n, ExceptionSink *xsink) const
	add the argument to this value and return the result

DLLEXPORT QoreNumberNode *	doMinus (const QoreNumberNode &n) const
	add the argument to this value and return the result

DLLEXPORT QoreNumberNode *	doMultiply (const QoreNumberNode &n) const
	add the argument to this value and return the result

DLLEXPORT QoreNumberNode *	doPlus (const QoreNumberNode &n) const
	add the argument to this value and return the result

virtual DLLEXPORT int	getAsString (QoreString &str, int foff, class ExceptionSink *xsink) const
	concatenate the string representation of the number value to an existing QoreString More...

virtual DLLEXPORT QoreString *	getAsString (bool &del, int foff, class ExceptionSink *xsink) const
	returns a QoreString giving the string representation of the number value, sets del to true More...

virtual DLLEXPORT class DateTime *	getDateTimeRepresentation (bool &del) const
	returns the DateTime representation of this value and sets del to true More...

virtual DLLEXPORT void	getDateTimeRepresentation (DateTime &dt) const
	assigns the date representation of the value to the DateTime reference passed More...

DLLEXPORT unsigned	getPrec () const
	returns the precision of the number

virtual DLLEXPORT QoreString *	getStringRepresentation (bool &del) const
	returns the number value converted to a string and sets del to true More...

virtual DLLEXPORT void	getStringRepresentation (QoreString &str) const
	concatentates the number value to an existing QoreString reference, default implementation does nothing More...

virtual DLLEXPORT const char *	getTypeName () const
	returns the type name as a c string More...

virtual DLLEXPORT bool	is_equal_hard (const AbstractQoreNode v, ExceptionSink xsink) const
	tests for equality without type conversions (hard compare) More...

virtual DLLEXPORT bool	is_equal_soft (const AbstractQoreNode v, ExceptionSink xsink) const
	tests for equality with possible type conversion (soft compare) More...

DLLEXPORT QoreNumberNode *	negate () const
	returns the negative of the current object (this)

DLLEXPORT QoreNumberNode *	numberRefSelf () const
	returns a pointer to this with the reference count incremented

virtual DLLLOCAL AbstractQoreNode *	parseInit (LocalVar oflag, int pflag, int &lvids, const QoreTypeInfo &typeInfo)
	returns the type information

virtual DLLEXPORT AbstractQoreNode *	realCopy () const
	returns a copy of the object; the caller owns the reference count More...

DLLEXPORT int	sign () const
	returns -1 if the number is negative, 0 if zero, or 1 if the number is positive

DLLEXPORT void	toString (QoreString &str, int fmt=QORE_NF_DEFAULT) const
	concatenates the string value corresponding to the number to the string given More...

DLLEXPORT bool	zero () const
	returns true if the number is zero

Public Member Functions inherited from SimpleValueQoreNode
DLLLOCAL	SimpleValueQoreNode (qore_type_t t, bool n_there_can_be_only_one=false)
	creates the object by assigning the type code and setting the "value" flag, unsetting the "needs_eval" flag, and setting "there_can_be_only_one"

Public Member Functions inherited from SimpleQoreNode
DLLLOCAL	SimpleQoreNode (qore_type_t t, bool n_value, bool n_needs_eval, bool n_there_can_be_only_one=false)
	constructor takes the type and value arguments

DLLLOCAL	SimpleQoreNode (const SimpleQoreNode &v)
	copy constructor

Public Member Functions inherited from AbstractQoreNode
DLLEXPORT	AbstractQoreNode (qore_type_t t, bool n_value, bool n_needs_eval, bool n_there_can_be_only_one=false, bool n_custom_reference_handlers=false)
	constructor takes the type More...

DLLEXPORT	AbstractQoreNode (const AbstractQoreNode &v)
	copy constructor

DLLEXPORT int64	bigIntEval (ExceptionSink *xsink) const
	evaluates the object and returns a 64-bit integer value More...

DLLEXPORT bool	boolEval (ExceptionSink *xsink) const
	evaluates the object and returns a boolean value More...

DLLEXPORT void	deref (ExceptionSink *xsink)
	decrements the reference count and calls derefImpl() if there_can_be_only_one is false, otherwise does nothing More...

DLLEXPORT AbstractQoreNode *	eval (ExceptionSink *xsink) const
	evaluates the object and returns a value (or 0) More...

DLLEXPORT AbstractQoreNode *	eval (bool &needs_deref, ExceptionSink *xsink) const
	optionally evaluates the argument More...

DLLEXPORT double	floatEval (ExceptionSink *xsink) const
	evaluates the object and returns a floating-point value More...

DLLEXPORT int64	getAsBigInt () const
	returns the 64-bit integer value of the object More...

DLLEXPORT bool	getAsBool () const
	returns the boolean value of the object More...

DLLEXPORT double	getAsFloat () const
	returns the float value of the object More...

DLLEXPORT int	getAsInt () const
	returns the integer value of the object More...

DLLLOCAL qore_type_t	getType () const
	returns the data type More...

DLLEXPORT int	integerEval (ExceptionSink *xsink) const
	evaluates the object and returns an integer value More...

DLLLOCAL bool	is_value () const
	returns true if the node represents a value More...

DLLLOCAL bool	isReferenceCounted () const
	returns true if the object is reference-counted

DLLLOCAL bool	needs_eval () const
	returns true if the object needs evaluation to return a value, false if not More...

DLLEXPORT void	ref () const
	increments the reference count

DLLEXPORT AbstractQoreNode *	refSelf () const
	returns "this" with an incremented reference count More...

Public Member Functions inherited from QoreReferenceCounter
DLLEXPORT	QoreReferenceCounter ()
	creates the reference counter object

DLLEXPORT	~QoreReferenceCounter ()
	destroys the reference counter object

DLLLOCAL bool	is_unique () const
	returns true if the reference count is 1 More...

DLLLOCAL int	reference_count () const
	gets the reference count More...

DLLEXPORT bool	ROdereference () const
	atomically decrements the reference count More...

DLLEXPORT void	ROreference () const
	atomically increments the reference count

Static Public Member Functions
static DLLLOCAL qore_type_t	getStaticTypeCode ()
	returns the type code (useful in templates)

static DLLLOCAL const char *	getStaticTypeName ()
	returns the type name (useful in templates) More...

static DLLEXPORT QoreNumberNode *	toNumber (const AbstractQoreNode *v)
	returns the representation of the value as a number if possible (otherwise returns 0), caller owns the reference returned

Protected Member Functions
virtual DLLEXPORT	~QoreNumberNode ()
	the destructor is protected because it should not be called directly More...

Protected Member Functions inherited from SimpleValueQoreNode
virtual DLLEXPORT int64	bigIntEvalImpl (ExceptionSink *xsink) const
	should never be called for value types More...

virtual DLLEXPORT bool	boolEvalImpl (ExceptionSink *xsink) const
	should never be called for value types More...

virtual DLLEXPORT AbstractQoreNode *	evalImpl (ExceptionSink *xsink) const
	should never be called for value types More...

virtual DLLEXPORT AbstractQoreNode *	evalImpl (bool &needs_deref, ExceptionSink *xsink) const
	should never be called for value types More...

virtual DLLEXPORT double	floatEvalImpl (ExceptionSink *xsink) const
	should never be called for value types More...

virtual DLLEXPORT int	integerEvalImpl (ExceptionSink *xsink) const
	should never be called for value types More...

Protected Member Functions inherited from AbstractQoreNode
virtual DLLEXPORT	~AbstractQoreNode ()
	default destructor does nothing More...

Protected Attributes
struct qore_number_private *	priv
	the private implementation of the type

Protected Attributes inherited from AbstractQoreNode
bool	custom_reference_handlers: 1
	set to one for objects that need custom reference handlers

bool	needs_eval_flag: 1
	if this is true then the type can be evaluated

bool	there_can_be_only_one: 1
	if this is set to true, then reference counting is turned off for objects of this class

qore_type_t	type: 11
	the type of the object More...

bool	value: 1
	this is true for values, if false then either the type needs evaluation to produce a value or is a parse expression

Protected Attributes inherited from QoreReferenceCounter
QoreThreadLock	mRO
	pthread lock to ensure atomicity of updates for architectures where we don't have an atomic increment and decrement implementation

Detailed Description

Qore's arbitrary-precision number value type, dynamically-allocated only, reference counted.

Constructor & Destructor Documentation

virtual DLLEXPORT QoreNumberNode::~QoreNumberNode ( )

protectedvirtual

the destructor is protected because it should not be called directly

See also: SimpleValueQoreNode::deref()

DLLEXPORT QoreNumberNode::QoreNumberNode ( double f )

creates a new number value and assigns the initial value to it

Parameters

f	the value for the object

DLLEXPORT QoreNumberNode::QoreNumberNode ( int64 i )

creates a new number value and assigns the initial value to it

Parameters

i	the value for the object

DLLEXPORT QoreNumberNode::QoreNumberNode ( const char * str )

creates a new number value and assigns the initial value to it

Parameters

str	the value for the object

DLLEXPORT QoreNumberNode::QoreNumberNode	(	const char *	str,
		unsigned	prec
	)

creates a new number value and assigns the initial value to it

Parameters

str	the value for the object
prec	the initial precision for the number

Member Function Documentation

virtual DLLEXPORT int QoreNumberNode::getAsString	(	QoreString &	str,
		int	foff,
		class ExceptionSink *	xsink
	)		const

virtual

concatenate the string representation of the number value to an existing QoreString

used for n and N printf formatting

Parameters

str	the string representation of the type will be concatenated to this QoreString reference
foff	for multi-line formatting offset, ignored by this implementation of the function
xsink	ignored by this implementation of the function

Returns: -1 for exception raised, 0 = OK

Implements AbstractQoreNode.

virtual DLLEXPORT QoreString* QoreNumberNode::getAsString	(	bool &	del,
		int	foff,
		class ExceptionSink *	xsink
	)		const

virtual

returns a QoreString giving the string representation of the number value, sets del to true

Used for n and N printf formatting. Do not call this function directly; use the QoreNodeAsStringHelper class (defined in QoreStringNode.h) instead

Parameters

del	if this is true when the function returns, then the returned QoreString pointer should be deleted, if false, then it must not be
foff	for multi-line formatting offset, ignored by this implementation of the function
xsink	ignored by this implementation of the function

See also: QoreNodeAsStringHelper

Implements AbstractQoreNode.

virtual DLLEXPORT class DateTime* QoreNumberNode::getDateTimeRepresentation ( bool & del ) const

virtual

returns the DateTime representation of this value and sets del to true

The DateTime representation is calculated by converting the number value to an integer interpreted as the number of seconds offset from January 1, 1970.

Note: Use the DateTimeValueHelper class instead of using this function directly

Parameters

del	output parameter: if del is true, then the returned DateTime pointer belongs to the caller (and must be deleted manually), if false, then it must not be

See also: DateTimeValueHelper

Reimplemented from AbstractQoreNode.

virtual DLLEXPORT void QoreNumberNode::getDateTimeRepresentation ( DateTime & dt ) const

virtual

assigns the date representation of the value to the DateTime reference passed

The DateTime representation is calculated by converting the number value to an integer interpreted as the number of seconds offset from January 1, 1970.

Parameters

dt	the DateTime reference to be assigned

Reimplemented from AbstractQoreNode.

static DLLLOCAL const char* QoreNumberNode::getStaticTypeName ( )

inlinestatic

returns the type name (useful in templates)

Returns: the type name as a c string

virtual DLLEXPORT QoreString* QoreNumberNode::getStringRepresentation ( bool & del ) const

virtual

returns the number value converted to a string and sets del to true

NOTE: do not use this function directly, use QoreStringValueHelper instead

Parameters

del	output parameter: del is set to true, meaning that the resulting QoreString pointer belongs to the caller (and must be deleted manually)

Returns: a QoreString pointer, use the del output parameter to determine ownership of the pointer

See also: QoreStringValueHelper

Reimplemented from AbstractQoreNode.

virtual DLLEXPORT void QoreNumberNode::getStringRepresentation ( QoreString & str ) const

virtual

concatentates the number value to an existing QoreString reference, default implementation does nothing

Parameters

str	a reference to a QoreString where the value of the type will be concatenated

Reimplemented from AbstractQoreNode.

virtual DLLEXPORT const char* QoreNumberNode::getTypeName ( ) const

virtual

returns the type name as a c string

Returns: the type name as a c string

Implements AbstractQoreNode.

virtual DLLEXPORT bool QoreNumberNode::is_equal_hard	(	const AbstractQoreNode *	v,
		ExceptionSink *	xsink
	)		const

virtual

tests for equality without type conversions (hard compare)

Parameters

v	the value to compare
xsink	ignored by this implementation of the function

Returns: true if the objects are equal, false if not

Implements AbstractQoreNode.

virtual DLLEXPORT bool QoreNumberNode::is_equal_soft	(	const AbstractQoreNode *	v,
		ExceptionSink *	xsink
	)		const

virtual

tests for equality with possible type conversion (soft compare)

Parameters

v	the value to compare
xsink	ignored by this implementation of the function

Returns: true if the objects are equal, false if not

Implements AbstractQoreNode.

virtual DLLEXPORT AbstractQoreNode* QoreNumberNode::realCopy ( ) const

virtual

returns a copy of the object; the caller owns the reference count

Returns: a copy of the object; the caller owns the reference count

Implements AbstractQoreNode.

DLLEXPORT void QoreNumberNode::toString	(	QoreString &	str,
		int	fmt = `QORE_NF_DEFAULT`
	)		const

concatenates the string value corresponding to the number to the string given

Parameters

str	the string to append to
fmt	a bitfield of number format flags

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

include/qore/QoreNumberNode.h (6813)

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation