QGpCoreTools::ExpressionVariable Class Reference

#include <ExpressionAction.h>

Inheritance diagram for QGpCoreTools::ExpressionVariable:

List of all members.

Public Member Functions
virtual bool	addArgument (ExpressionAction *a)
virtual ExpressionAction *	close (Type t)
	ExpressionVariable (QString name, ExpressionContext *c)
virtual bool	isReadOnly () const
virtual ExpressionAction *	parent () const
virtual void	replaceArgument (ExpressionAction *, ExpressionAction *)
virtual void	setValue (const QVariant &val)
virtual QVariant	value () const
virtual const QString &	xml_tagName () const
	~ExpressionVariable ()
Static Public Attributes
static const QString	xmlExpressionVariableTag = "ExpressionVariable"
Protected Member Functions
virtual void	xml_writeChildren (XML_WRITECHILDREN_ARGS) const
virtual void	xml_writeProperties (XML_WRITEPROPERTIES_ARGS) const

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Constructor & Destructor Documentation

QGpCoreTools::ExpressionVariable::ExpressionVariable	(	QString	name,
		ExpressionContext *	c
	)

References QGpCoreTools::ExpressionContext::addVariable(), and TRACE.

{
  TRACE;
  _context=context;
  _varIndex=_context->addVariable(name, new ExpressionVariableStorage);
  _index=0;
  _open=false;
}

QGpCoreTools::ExpressionVariable::~ExpressionVariable

(

)

[inline]

{delete _index;}

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Member Function Documentation

bool QGpCoreTools::ExpressionVariable::addArgument

(

ExpressionAction *

a

)

[virtual]

If argument is already set, the new argument is set as the current and the old one is set as the argument of the new argument. This mechanism is designed for cases where an operator with a higher priority is encountered during parse.

Implements QGpCoreTools::ExpressionAction.

References QGpCoreTools::ExpressionAction::addArgument(), QGpCoreTools::ExpressionAction::setParent(), and TRACE.

{
  TRACE;
  if(!_index || a->addArgument(_index)) {
    a->setParent(this);
    _index=a;
    _open=true;
    return true;
  } else return false;
}

ExpressionAction * QGpCoreTools::ExpressionVariable::close

(

ExpressionAction::Type

t

)

[virtual]

Reimplemented from QGpCoreTools::ExpressionAction.

References QGpCoreTools::ExpressionAction::_parent, QGpCoreTools::ExpressionAction::CloseSquareBracket, and TRACE.

{
  TRACE;
  if(t==CloseSquareBracket && _index && _open) {
    _open=false;
    return _parent;
  }
  else return ExpressionAction::close(t);
}

bool QGpCoreTools::ExpressionVariable::isReadOnly

(

)

const [virtual]

Reimplemented from QGpCoreTools::ExpressionAction.

References QGpCoreTools::ExpressionStorage::isReadOnly(), TRACE, and QGpCoreTools::ExpressionContext::variable().

{
  TRACE;
  return _context->variable(_varIndex)->isReadOnly();
}

virtual ExpressionAction* QGpCoreTools::ExpressionVariable::parent

(

)

const [inline, virtual]

Reimplemented from QGpCoreTools::ExpressionAction.

{if(_open) return 0; else return _parent;}

void QGpCoreTools::ExpressionVariable::replaceArgument	(	ExpressionAction *	oldA,
		ExpressionAction *	newA
	)		[virtual]

Implements QGpCoreTools::ExpressionAction.

References QGpCoreTools::ExpressionAction::setParent(), and TRACE.

{
  TRACE;
  ASSERT(_index==oldA);
  _index=newA;
  newA->setParent(this);
}

void QGpCoreTools::ExpressionVariable::setValue

(

const QVariant &

val

)

[virtual]

Reimplemented from QGpCoreTools::ExpressionAction.

References QGpCoreTools::ExpressionStorage::setValue(), TRACE, QGpCoreTools::ExpressionAction::value(), and QGpCoreTools::ExpressionContext::variable().

{
  TRACE;
  if(_index)
    _context->variable(_varIndex)->setValue(_index->value().toString(), val);
  else
    _context->variable(_varIndex)->setValue(QString::null, val);
}

QVariant QGpCoreTools::ExpressionVariable::value

(

)

const [virtual]

Implements QGpCoreTools::ExpressionAction.

References TRACE, QGpCoreTools::ExpressionStorage::value(), QGpCoreTools::ExpressionAction::value(), and QGpCoreTools::ExpressionContext::variable().

{
  TRACE;
  if(_index)
    return _context->variable(_varIndex)->value(_index->value().toString());
  else
    return _context->variable(_varIndex)->value(QString::null);
}

virtual const QString& QGpCoreTools::ExpressionVariable::xml_tagName

(

)

const [inline, virtual]

Reimplemented from QGpCoreTools::ExpressionAction.

{return xmlExpressionVariableTag;}

void QGpCoreTools::ExpressionVariable::xml_writeChildren

(

XML_WRITECHILDREN_ARGS

)

const [protected, virtual]

Reimplemented from QGpCoreTools::XMLClass.

References TRACE, and QGpCoreTools::XMLClass::xml_save().

{
  TRACE;
  Q_UNUSED(context);
  if(_index) _index->xml_save(s, context);
}

void QGpCoreTools::ExpressionVariable::xml_writeProperties

(

XML_WRITEPROPERTIES_ARGS

)

const [protected, virtual]

Reimplemented from QGpCoreTools::XMLClass.

References TRACE, and QGpCoreTools::XMLClass::writeProperty().

{
  TRACE;
  Q_UNUSED(context);
  writeProperty(s,  "varIndex", _varIndex);
}

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Member Data Documentation

const QString QGpCoreTools::ExpressionVariable::xmlExpressionVariableTag = "ExpressionVariable" [static]

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

• QGpCoreTools/ExpressionAction.h
• QGpCoreTools/ExpressionAction.cpp