#include <berryExpression.h>

Inheritance diagram for berry::Expression:

[legend]

Collaboration diagram for berry::Expression:

Public Member Functions
	berryObjectMacro (Expression)

	Expression ()

	~Expression () override

uint	HashCode () const override

virtual SmartPointer< const EvaluationResult >	Evaluate (IEvaluationContext *context) const =0

virtual const ExpressionInfo *	ComputeExpressionInfo () const

virtual void	CollectExpressionInfo (ExpressionInfo *info) const

QString	ToString () const override

bool	operator== (const Object *object) const override

Public Member Functions inherited from berry::Object
virtual QString	GetClassName () const

virtual Reflection::TypeInfo	GetTypeInfo () const

virtual QList< Reflection::TypeInfo >	GetSuperclasses () const

virtual void	Delete ()

QDebug	Print (QDebug os, Indent Indent=0) const

virtual bool	operator< (const Object *) const

void	Register () const

void	UnRegister (bool del=true) const

int	GetReferenceCount () const

void	SetReferenceCount (int)

void	AddDestroyListener (const MessageAbstractDelegate<> &delegate) const

void	RemoveDestroyListener (const MessageAbstractDelegate<> &delegate) const

Static Public Attributes
static const uint	HASH_CODE_NOT_COMPUTED

static const uint	HASH_FACTOR

static const QString	ATT_VALUE

static const Expression::Pointer	TRUE_EVAL

static const Expression::Pointer	FALSE_EVAL

Protected Member Functions
virtual uint	ComputeHashCode () const

Protected Member Functions inherited from berry::Object
	Object ()

virtual	~Object ()

virtual QDebug	PrintSelf (QDebug os, Indent indent) const

virtual QDebug	PrintHeader (QDebug os, Indent indent) const

virtual QDebug	PrintTrailer (QDebug os, Indent indent) const

Static Protected Member Functions
static bool	Equals (const QList< Expression::Pointer > &leftArray, const QList< Expression::Pointer > &rightArray)

static bool	Equals (const QList< Object::Pointer > &leftArray, const QList< Object::Pointer > &rightArray)

static uint	HashCode (Expression::Pointer object)

static uint	HashCode (const QList< Expression::Pointer > &array)

static uint	HashCode (const QList< Object::Pointer > &array)

Additional Inherited Members
Public Types inherited from berry::Object
typedef Object	Self

typedef berry::SmartPointer< Self >	Pointer

typedef berry::SmartPointer< const Self >	ConstPointer

typedef berry::WeakPointer< Self >	WeakPtr

typedef berry::WeakPointer< const Self >	ConstWeakPtr

Static Public Member Functions inherited from berry::Object
static const char *	GetStaticClassName ()

static Reflection::TypeInfo	GetStaticTypeInfo ()

static QList< Reflection::TypeInfo >	GetStaticSuperclasses ()

Protected Attributes inherited from berry::Object
QAtomicInt	m_ReferenceCount

QMutex	m_ReferenceCountLock

Detailed Description

Abstract base class for all expressions provided by the common expression language.

An expression is evaluated by calling Evaluate.

This class may be subclassed to provide specific expressions.

Definition at line 37 of file berryExpression.h.

Constructor & Destructor Documentation

◆ Expression()

berry::Expression::Expression ( )

◆ ~Expression()

berry::Expression::~Expression ( )

override

Member Function Documentation

◆ berryObjectMacro()

berry::Expression::berryObjectMacro ( Expression )

◆ CollectExpressionInfo()

virtual void berry::Expression::CollectExpressionInfo ( ExpressionInfo * info ) const

virtual

Collects information about this expression tree. This default implementation add the expression's type to the set of misbehaving expression types.

Parameters

info	the expression information object used to collect the information

Reimplemented in berry::FALSE_EVALExpression, and berry::TRUE_EVALExpression.

◆ ComputeExpressionInfo()

virtual const ExpressionInfo* berry::Expression::ComputeExpressionInfo ( ) const

virtual

Computes the expression information for the given expression tree.

This is a convenience method for collecting the expression information using Expression#CollectExpressionInfo.

Returns: the expression information

◆ ComputeHashCode()

virtual uint berry::Expression::ComputeHashCode ( ) const

protectedvirtual

Method to compute the hash code for this object. The result returned from this method is cached in the fHashCode field. If the value returned from the method equals HASH_CODE_NOT_COMPUTED (e.g. -1) then the value is incremented by one.

This default implementation calls super.hashCode()

Returns: a hash code for this object.

◆ Equals() [1/2]

static bool berry::Expression::Equals	(	const QList< Expression::Pointer > &	leftArray,
		const QList< Expression::Pointer > &	rightArray
	)

staticprotected

Tests whether two arrays of objects are equal to each other. The arrays must not be null, but their elements may be null.

Parameters

leftArray	the left array to compare; may be `null`, and may be empty and may contain `null` elements.
rightArray	the right array to compare; may be `null`, and may be empty and may contain `null` elements.

Returns: TRUE_EVAL if the arrays are equal length and the elements at the same position are equal; FALSE_EVAL otherwise.

◆ Equals() [2/2]

static bool berry::Expression::Equals	(	const QList< Object::Pointer > &	leftArray,
		const QList< Object::Pointer > &	rightArray
	)

staticprotected

◆ Evaluate()

virtual SmartPointer<const EvaluationResult> berry::Expression::Evaluate ( IEvaluationContext * context ) const

pure virtual

Evaluates this expression.

Parameters

context an evaluation context providing information like variable, name spaces, etc. necessary to evaluate this expression

Returns: the result of the expression evaluation

Exceptions

CoreException if the evaluation failed. The concrete reason is defined by the subclass implementing this method

Implemented in berry::FALSE_EVALExpression, and berry::TRUE_EVALExpression.

◆ HashCode() [1/4]

uint berry::Expression::HashCode ( ) const

overridevirtual

Returns a hash code value for the object.

Reimplemented from berry::Object.

◆ HashCode() [2/4]

static uint berry::Expression::HashCode ( const QList< Expression::Pointer > & array )

staticprotected

Returns the hash code for the given array. This method handles null.

Parameters

array the array for which the hash code is desired; may be null.

Returns: the hash code of the array; zero if the object is null.

◆ HashCode() [3/4]

static uint berry::Expression::HashCode ( const QList< Object::Pointer > & array )

staticprotected

◆ HashCode() [4/4]

static uint berry::Expression::HashCode ( Expression::Pointer object )

staticprotected

Returns the hash code for the given object. This method handles null.

Parameters

object the object for which the hash code is desired; may be null.

Returns: The hash code of the object; zero if the object is null.

◆ operator==()

bool berry::Expression::operator== ( const Object * ) const

overridevirtual

A generic comparison method. Override this method in subclasses and cast to your derived class to provide a more detailed comparison.

Reimplemented from berry::Object.

◆ ToString()

QString berry::Expression::ToString ( ) const

overridevirtual

Returns a string representation of this object. The default implementation returns an empty string.

Reimplemented from berry::Object.

Member Data Documentation

◆ ATT_VALUE

const QString berry::Expression::ATT_VALUE

static

Name of the value attribute of an expression (value is value).

Definition at line 57 of file berryExpression.h.

◆ FALSE_EVAL

const Expression::Pointer berry::Expression::FALSE_EVAL

static

The expression corresponding to EvaluationResult#FALSE_EVAL.

Definition at line 136 of file berryExpression.h.

◆ HASH_CODE_NOT_COMPUTED

const uint berry::Expression::HASH_CODE_NOT_COMPUTED

static

The constant integer hash code value meaning the hash code has not yet been computed.

Definition at line 47 of file berryExpression.h.

◆ HASH_FACTOR

const uint berry::Expression::HASH_FACTOR

static

A factor for computing the hash code for all expressions.

Definition at line 52 of file berryExpression.h.

◆ TRUE_EVAL

const Expression::Pointer berry::Expression::TRUE_EVAL

static

The expression corresponding to EvaluationResult#TRUE_EVAL.

Definition at line 131 of file berryExpression.h.

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

berryExpression.h

Public Member Functions

Static Public Attributes

Protected Member Functions

Static Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ Expression()

◆ ~Expression()

Member Function Documentation

◆ berryObjectMacro()

◆ CollectExpressionInfo()

◆ ComputeExpressionInfo()

◆ ComputeHashCode()

◆ Equals() [1/2]

◆ Equals() [2/2]

◆ Evaluate()

◆ HashCode() [1/4]

◆ HashCode() [2/4]

◆ HashCode() [3/4]

◆ HashCode() [4/4]

◆ operator==()

◆ ToString()

Member Data Documentation

◆ ATT_VALUE

◆ FALSE_EVAL

◆ HASH_CODE_NOT_COMPUTED

◆ HASH_FACTOR

◆ TRUE_EVAL