casacore::TaQLNodeRep Class Reference

Representation of a node in the raw TaQL parse tree. More...

#include <TaQLNodeRep.h>

Inheritance diagram for casacore::TaQLNodeRep:

List of all members.

Public Member Functions
	TaQLNodeRep (int nodeType)
	Constructor for derived classes specifying the type.
virtual	~TaQLNodeRep ()
char	nodeType () const
	Get the node type of the derived class.
const TaQLStyle &	style () const
	Get the TaQL style.
virtual TaQLNodeResult	visit (TaQLNodeVisitor &) const =0
	Visit a node for tree traversal.
virtual void	show (std::ostream &os) const =0
	Print the object in an ostream.
virtual void	save (AipsIO &aio) const =0
	Save the object.
Static Public Member Functions
static TaQLNodeRep *	link (TaQLNodeRep *rep)
	Increment the reference count.
static void	unlink (TaQLNodeRep *rep)
	Decrement the reference count.
static String	checkDataType (const String &)
	Check the data type string and return its standard form.
Private Member Functions
	TaQLNodeRep (const TaQLNodeRep &)
	Letter objects cannot be copied.
TaQLNodeRep &	operator= (const TaQLNodeRep &)
Private Attributes
int	itsCount
char	itsNodeType
TaQLStyle	itsStyle

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Detailed Description

Representation of a node in the raw TaQL parse tree.

Intended use:

Internal

Review Status

Test programs:

tTaQLNode

Prerequisite

• TaQLNode
• Note 199 describing TaQL

Synopsis

TaQLNode/TaQLNodeRep form an envelope/letter pair. TaQLNodeRep is the abstract base class for all classes used in the raw TaQL parse tree (e.g. TaQLConstNodeRep ).

Motivation

The envelope/letter idiom (aka counted referencing) is a nice means to pass an object around by value, so to ensure that an object is deleted in case of an exception. Furthermore it makes copying an object very cheap and memory management straightforward.

Definition at line 76 of file TaQLNodeRep.h.

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Constructor & Destructor Documentation

casacore::TaQLNodeRep::TaQLNodeRep

(

int

nodeType

)

[explicit]

Constructor for derived classes specifying the type.

virtual casacore::TaQLNodeRep::~TaQLNodeRep

(

)

[virtual]

casacore::TaQLNodeRep::TaQLNodeRep

(

const TaQLNodeRep &

)

[private]

Letter objects cannot be copied.

---

Member Function Documentation

static String casacore::TaQLNodeRep::checkDataType

(

const String &

)

[static]

Check the data type string and return its standard form.

static TaQLNodeRep* casacore::TaQLNodeRep::link

(

TaQLNodeRep *

rep

)

[inline, static]

Increment the reference count.

Definition at line 128 of file TaQLNodeRep.h.

References itsCount.

Referenced by casacore::TaQLNode::operator=(), and casacore::TaQLNode::TaQLNode().

char casacore::TaQLNodeRep::nodeType

(

)

const [inline]

Get the node type of the derived class.

Definition at line 142 of file TaQLNodeRep.h.

References itsNodeType.

Referenced by casacore::TaQLNode::nodeType().

TaQLNodeRep& casacore::TaQLNodeRep::operator=

(

const TaQLNodeRep &

)

[private]

virtual void casacore::TaQLNodeRep::save

(

AipsIO &

aio

)

const [pure virtual]

Save the object.

Implemented in casacore::TaQLConstNodeRep, casacore::TaQLRegexNodeRep, casacore::TaQLUnaryNodeRep, casacore::TaQLBinaryNodeRep, casacore::TaQLMultiNodeRep, casacore::TaQLFuncNodeRep, casacore::TaQLRangeNodeRep, casacore::TaQLIndexNodeRep, casacore::TaQLJoinNodeRep, casacore::TaQLKeyColNodeRep, casacore::TaQLTableNodeRep, casacore::TaQLColNodeRep, casacore::TaQLColumnsNodeRep, casacore::TaQLGroupNodeRep, casacore::TaQLSortKeyNodeRep, casacore::TaQLSortNodeRep, casacore::TaQLLimitOffNodeRep, casacore::TaQLGivingNodeRep, casacore::TaQLUpdExprNodeRep, casacore::TaQLSelectNodeRep, casacore::TaQLCountNodeRep, casacore::TaQLUpdateNodeRep, casacore::TaQLInsertNodeRep, casacore::TaQLDeleteNodeRep, casacore::TaQLCalcNodeRep, casacore::TaQLCreTabNodeRep, casacore::TaQLColSpecNodeRep, casacore::TaQLRecFldNodeRep, casacore::TaQLUnitNodeRep, casacore::TaQLAltTabNodeRep, casacore::TaQLAddColNodeRep, casacore::TaQLRenDropNodeRep, casacore::TaQLSetKeyNodeRep, casacore::TaQLAddRowNodeRep, casacore::TaQLConcTabNodeRep, and casacore::TaQLShowNodeRep.

virtual void casacore::TaQLNodeRep::show

(

std::ostream &

os

)

const [pure virtual]

Print the object in an ostream.

Implemented in casacore::TaQLConstNodeRep, casacore::TaQLRegexNodeRep, casacore::TaQLUnaryNodeRep, casacore::TaQLBinaryNodeRep, casacore::TaQLMultiNodeRep, casacore::TaQLFuncNodeRep, casacore::TaQLRangeNodeRep, casacore::TaQLIndexNodeRep, casacore::TaQLJoinNodeRep, casacore::TaQLKeyColNodeRep, casacore::TaQLTableNodeRep, casacore::TaQLColNodeRep, casacore::TaQLColumnsNodeRep, casacore::TaQLGroupNodeRep, casacore::TaQLSortKeyNodeRep, casacore::TaQLSortNodeRep, casacore::TaQLLimitOffNodeRep, casacore::TaQLGivingNodeRep, casacore::TaQLUpdExprNodeRep, casacore::TaQLQueryNodeRep, casacore::TaQLUpdateNodeRep, casacore::TaQLInsertNodeRep, casacore::TaQLDeleteNodeRep, casacore::TaQLCalcNodeRep, casacore::TaQLColSpecNodeRep, casacore::TaQLRecFldNodeRep, casacore::TaQLUnitNodeRep, casacore::TaQLAddColNodeRep, casacore::TaQLRenDropNodeRep, casacore::TaQLSetKeyNodeRep, casacore::TaQLAddRowNodeRep, and casacore::TaQLShowNodeRep.

Referenced by casacore::TaQLNode::show().

const TaQLStyle& casacore::TaQLNodeRep::style

(

)

const [inline]

Get the TaQL style.

Definition at line 146 of file TaQLNodeRep.h.

References itsStyle.

Referenced by casacore::TaQLNode::style().

static void casacore::TaQLNodeRep::unlink

(

TaQLNodeRep *

rep

)

[inline, static]

Decrement the reference count.

Delete the letter if no more references.

Definition at line 136 of file TaQLNodeRep.h.

References itsCount.

Referenced by casacore::TaQLNode::operator=(), and casacore::TaQLNode::~TaQLNode().

virtual TaQLNodeResult casacore::TaQLNodeRep::visit

(

TaQLNodeVisitor &

)

const [pure virtual]

Visit a node for tree traversal.

Implemented in casacore::TaQLConstNodeRep, casacore::TaQLRegexNodeRep, casacore::TaQLUnaryNodeRep, casacore::TaQLBinaryNodeRep, casacore::TaQLMultiNodeRep, casacore::TaQLFuncNodeRep, casacore::TaQLRangeNodeRep, casacore::TaQLIndexNodeRep, casacore::TaQLJoinNodeRep, casacore::TaQLKeyColNodeRep, casacore::TaQLTableNodeRep, casacore::TaQLColNodeRep, casacore::TaQLColumnsNodeRep, casacore::TaQLGroupNodeRep, casacore::TaQLSortKeyNodeRep, casacore::TaQLSortNodeRep, casacore::TaQLLimitOffNodeRep, casacore::TaQLGivingNodeRep, casacore::TaQLUpdExprNodeRep, casacore::TaQLSelectNodeRep, casacore::TaQLCountNodeRep, casacore::TaQLUpdateNodeRep, casacore::TaQLInsertNodeRep, casacore::TaQLDeleteNodeRep, casacore::TaQLCalcNodeRep, casacore::TaQLCreTabNodeRep, casacore::TaQLColSpecNodeRep, casacore::TaQLRecFldNodeRep, casacore::TaQLUnitNodeRep, casacore::TaQLAltTabNodeRep, casacore::TaQLAddColNodeRep, casacore::TaQLRenDropNodeRep, casacore::TaQLSetKeyNodeRep, casacore::TaQLAddRowNodeRep, casacore::TaQLConcTabNodeRep, and casacore::TaQLShowNodeRep.

Referenced by casacore::TaQLNode::visit().

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Member Data Documentation

int casacore::TaQLNodeRep::itsCount [private]

Definition at line 168 of file TaQLNodeRep.h.

Referenced by link(), and unlink().

char casacore::TaQLNodeRep::itsNodeType [private]

Definition at line 169 of file TaQLNodeRep.h.

Referenced by nodeType().

TaQLStyle casacore::TaQLNodeRep::itsStyle [private]

Definition at line 170 of file TaQLNodeRep.h.

Referenced by style().

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

• casacore/tables/TaQL/TaQLNodeRep.h