casa::TaQLNodeRep Class Reference

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

#include <TaQLNodeRep.h>

Inheritance diagram for casa::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

casa::TaQLNodeRep::TaQLNodeRep

(

int

nodeType

)

[explicit]

Constructor for derived classes specifying the type.

virtual casa::TaQLNodeRep::~TaQLNodeRep

(

)

[virtual]

casa::TaQLNodeRep::TaQLNodeRep

(

const TaQLNodeRep &

)

[private]

Letter objects cannot be copied.

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Member Function Documentation

static String casa::TaQLNodeRep::checkDataType

(

const String &

)

[static]

Check the data type string and return its standard form.

static TaQLNodeRep* casa::TaQLNodeRep::link

(

TaQLNodeRep *

rep

)

[inline, static]

Increment the reference count.

Definition at line 120 of file TaQLNodeRep.h.

References itsCount.

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

char casa::TaQLNodeRep::nodeType

(

)

const [inline]

Get the node type of the derived class.

Definition at line 134 of file TaQLNodeRep.h.

References itsNodeType.

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

TaQLNodeRep& casa::TaQLNodeRep::operator=

(

const TaQLNodeRep &

)

[private]

virtual void casa::TaQLNodeRep::save

(

AipsIO &

aio

)

const [pure virtual]

Save the object.

Implemented in casa::TaQLUnitNodeRep, casa::TaQLRecFldNodeRep, casa::TaQLColSpecNodeRep, casa::TaQLCreTabNodeRep, casa::TaQLCalcNodeRep, casa::TaQLDeleteNodeRep, casa::TaQLInsertNodeRep, casa::TaQLUpdateNodeRep, casa::TaQLCountNodeRep, casa::TaQLSelectNodeRep, casa::TaQLUpdExprNodeRep, casa::TaQLGivingNodeRep, casa::TaQLLimitOffNodeRep, casa::TaQLSortNodeRep, casa::TaQLSortKeyNodeRep, casa::TaQLColumnsNodeRep, casa::TaQLColNodeRep, casa::TaQLTableNodeRep, casa::TaQLKeyColNodeRep, casa::TaQLJoinNodeRep, casa::TaQLIndexNodeRep, casa::TaQLRangeNodeRep, casa::TaQLFuncNodeRep, casa::TaQLMultiNodeRep, casa::TaQLBinaryNodeRep, casa::TaQLUnaryNodeRep, casa::TaQLRegexNodeRep, and casa::TaQLConstNodeRep.

virtual void casa::TaQLNodeRep::show

(

std::ostream &

os

)

const [pure virtual]

Print the object in an ostream.

Implemented in casa::TaQLUnitNodeRep, casa::TaQLRecFldNodeRep, casa::TaQLColSpecNodeRep, casa::TaQLCreTabNodeRep, casa::TaQLCalcNodeRep, casa::TaQLDeleteNodeRep, casa::TaQLInsertNodeRep, casa::TaQLUpdateNodeRep, casa::TaQLQueryNodeRep, casa::TaQLUpdExprNodeRep, casa::TaQLGivingNodeRep, casa::TaQLLimitOffNodeRep, casa::TaQLSortNodeRep, casa::TaQLSortKeyNodeRep, casa::TaQLColumnsNodeRep, casa::TaQLColNodeRep, casa::TaQLTableNodeRep, casa::TaQLKeyColNodeRep, casa::TaQLJoinNodeRep, casa::TaQLIndexNodeRep, casa::TaQLRangeNodeRep, casa::TaQLFuncNodeRep, casa::TaQLMultiNodeRep, casa::TaQLBinaryNodeRep, casa::TaQLUnaryNodeRep, casa::TaQLRegexNodeRep, and casa::TaQLConstNodeRep.

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

const TaQLStyle& casa::TaQLNodeRep::style

(

)

const [inline]

Get the TaQL style.

Definition at line 138 of file TaQLNodeRep.h.

References itsStyle.

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

static void casa::TaQLNodeRep::unlink

(

TaQLNodeRep *

rep

)

[inline, static]

Decrement the reference count.

Delete the letter if no more references.

Definition at line 128 of file TaQLNodeRep.h.

References itsCount.

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

virtual TaQLNodeResult casa::TaQLNodeRep::visit

(

TaQLNodeVisitor &

)

const [pure virtual]

Visit a node for tree traversal.

Implemented in casa::TaQLUnitNodeRep, casa::TaQLRecFldNodeRep, casa::TaQLColSpecNodeRep, casa::TaQLCreTabNodeRep, casa::TaQLCalcNodeRep, casa::TaQLDeleteNodeRep, casa::TaQLInsertNodeRep, casa::TaQLUpdateNodeRep, casa::TaQLCountNodeRep, casa::TaQLSelectNodeRep, casa::TaQLUpdExprNodeRep, casa::TaQLGivingNodeRep, casa::TaQLLimitOffNodeRep, casa::TaQLSortNodeRep, casa::TaQLSortKeyNodeRep, casa::TaQLColumnsNodeRep, casa::TaQLColNodeRep, casa::TaQLTableNodeRep, casa::TaQLKeyColNodeRep, casa::TaQLJoinNodeRep, casa::TaQLIndexNodeRep, casa::TaQLRangeNodeRep, casa::TaQLFuncNodeRep, casa::TaQLMultiNodeRep, casa::TaQLBinaryNodeRep, casa::TaQLUnaryNodeRep, casa::TaQLRegexNodeRep, and casa::TaQLConstNodeRep.

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

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Member Data Documentation

int casa::TaQLNodeRep::itsCount [private]

Definition at line 160 of file TaQLNodeRep.h.

Referenced by link(), and unlink().

char casa::TaQLNodeRep::itsNodeType [private]

Definition at line 161 of file TaQLNodeRep.h.

Referenced by nodeType().

TaQLStyle casa::TaQLNodeRep::itsStyle [private]

Definition at line 162 of file TaQLNodeRep.h.

Referenced by style().

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

• casacore/tables/Tables/TaQLNodeRep.h