Select-class for flex/bison scanner/parser for RecordGram. More...

#include <RecordGram.h>

Public Types
enum	Token { Node, Val, Elem, Set }
	Define the types of tokens in the grammar. More...

Static Public Member Functions
static TableExprNode	parse (const RecordInterface &record, const String &expression)
	Convert an expression string to an expression tree. More...

static TableExprNode	parse (const Table &table, const String &expression)
	Convert an expression string to an expression tree. More...

static Bool	expr2Bool (const String &expr, const Record &vars=Record())
	Evaluate an expression to the given type. More...

static Int64	expr2Int (const String &expr, const Record &vars=Record())

static double	expr2Double (const String &expr, const Record &vars=Record(), const String &unit=String())

static DComplex	expr2Complex (const String &expr, const Record &vars=Record())

static String	expr2String (const String &expr, const Record &vars=Record())

static MVTime	expr2Date (const String &expr, const Record &vars=Record())

static Array< Bool >	expr2ArrayBool (const String &expr, const Record &vars=Record())

static Array< Int64 >	expr2ArrayInt (const String &expr, const Record &vars=Record())

static Array< double >	expr2ArrayDouble (const String &expr, const Record &vars=Record(), const String &unit=String())

static Array< DComplex >	expr2ArrayComplex (const String &expr, const Record &vars=Record())

static Array< String >	expr2ArrayString (const String &expr, const Record &vars=Record())

static Array< MVTime >	expr2ArrayDate (const String &expr, const Record &vars=Record())

static TableExprNode	handleLiteral (RecordGramVal *)
	Create a TableExprNode from a literal. More...

static TableExprNode	handleField (const String &name)
	Find the field name and create a TableExprNode from it. More...

static TableExprNode	handleFunc (const String &name, const TableExprNodeSet &arguments)
	Handle a function. More...

static TableExprNode	handleRegex (const TableExprNode &left, const String &regex)
	Handle a regex. More...

static void	setNodePtr (TableExprNode *nodePtr)
	Set the final node pointer. More...

static void	addToken (TableExprNode *ptr)
	Add a token to the list of tokens to be deleted for the possible tokens in the RecordGram.yy union. More...

static void	addToken (RecordGramVal *ptr)

static void	addToken (TableExprNodeSet *ptr)

static void	addToken (TableExprNodeSetElem *ptr)

static void	deleteToken (TableExprNode *ptr)
	Delete a token and remove from the list. More...

static void	deleteToken (RecordGramVal *ptr)

static void	deleteToken (TableExprNodeSet *ptr)

static void	deleteToken (TableExprNodeSetElem *ptr)

Static Public Attributes
static TaQLStyle	theirTaQLStyle
	Define the global TaQLStyle to use. More...

Static Private Member Functions
static void	deleteTokenStorage ()
	Delete all tokens not deleted yet. More...

static TableExprNode	doParse (const String &expression)
	Do the conversion of an expression string to an expression tree. More...

static void	addToken (void *ptr, Token type)
	Add a token to the list of tokens to be deleted. More...

static void	removeToken (void *ptr)
	Remove a token from the list of tokens to be deleted. More...

Static Private Attributes
static std::map< void *, Token >	theirTokens

static const RecordInterface *	theirRecPtr

static const Table *	theirTabPtr

static TableExprNode *	theirNodePtr

static Mutex	theirMutex

Detailed Description

Select-class for flex/bison scanner/parser for RecordGram.

Intended use:

Internal

Review Status

Reviewed By:: UNKNOWN
Date Reviewed:: before2004/08/25

Prerequisite

RecordGram.l and.y (flex and bison grammar)

Synopsis

This class is needed for the the actions in the flex scanner and bison parser. This stores the information by constructing RecordGram objects as needed and storing them in a List.

An expression can be given as a string and parsed by the parse function. The grammar used is as much as possible the same as that for the WHERE clause in TaQL (see Note 199). It is possible to set the TaQL style to use by setting theirTaQLStyle before calling the parse functions. A better way is to define the style with the 'USING STYLE' part of the command (similar to TaQL).

Motivation

It is necessary to be able to give a record select command in ASCII. It is used by the ACSIS people.

Definition at line 176 of file RecordGram.h.

Member Enumeration Documentation

enum casacore::RecordGram::Token

Define the types of tokens in the grammar.

Enumerator
Node
Val
Elem
Set

Definition at line 180 of file RecordGram.h.

Member Function Documentation

static void casacore::RecordGram::addToken ( TableExprNode * ptr )

static

Add a token to the list of tokens to be deleted for the possible tokens in the RecordGram.yy union.

The addToken() functions are to be called only by the yy parser (under theirMutex).

static void casacore::RecordGram::addToken ( RecordGramVal * ptr )

static

static void casacore::RecordGram::addToken ( TableExprNodeSet * ptr )

static

static void casacore::RecordGram::addToken ( TableExprNodeSetElem * ptr )

static

static void casacore::RecordGram::addToken	(	void *	ptr,
		Token	type
	)

inlinestaticprivate

Add a token to the list of tokens to be deleted.

Definition at line 274 of file RecordGram.h.

References theirTokens, and type().

static void casacore::RecordGram::deleteToken ( TableExprNode * ptr )

static

Delete a token and remove from the list.

The deleteToken() functions are to be called only by the yy parser (under theirMutex).

static void casacore::RecordGram::deleteToken ( RecordGramVal * ptr )

static

static void casacore::RecordGram::deleteToken ( TableExprNodeSet * ptr )

static

static void casacore::RecordGram::deleteToken ( TableExprNodeSetElem * ptr )

static

static void casacore::RecordGram::deleteTokenStorage ( )

staticprivate

Delete all tokens not deleted yet.

static TableExprNode casacore::RecordGram::doParse ( const String & expression )

staticprivate

Do the conversion of an expression string to an expression tree.

static Array<Bool> casacore::RecordGram::expr2ArrayBool	(	const String &	expr,
		const Record &	vars = `Record()`
	)

static

static Array<DComplex> casacore::RecordGram::expr2ArrayComplex	(	const String &	expr,
		const Record &	vars = `Record()`
	)

static

static Array<MVTime> casacore::RecordGram::expr2ArrayDate	(	const String &	expr,
		const Record &	vars = `Record()`
	)

static

static Array<double> casacore::RecordGram::expr2ArrayDouble	(	const String &	expr,
		const Record &	vars = `Record()`,
		const String &	unit = `String()`
	)

static

static Array<Int64> casacore::RecordGram::expr2ArrayInt	(	const String &	expr,
		const Record &	vars = `Record()`
	)

static

static Array<String> casacore::RecordGram::expr2ArrayString	(	const String &	expr,
		const Record &	vars = `Record()`
	)

static

static Bool casacore::RecordGram::expr2Bool	(	const String &	expr,
		const Record &	vars = `Record()`
	)

static

Evaluate an expression to the given type.

The expression can contain variables; their names and values must be defined in the record. For double values it is possible to specify the desired unit. If the expression is a scalar value, the expr2Array functions will return an array with length 1.

static DComplex casacore::RecordGram::expr2Complex	(	const String &	expr,
		const Record &	vars = `Record()`
	)

static

static MVTime casacore::RecordGram::expr2Date	(	const String &	expr,
		const Record &	vars = `Record()`
	)

static

static double casacore::RecordGram::expr2Double	(	const String &	expr,
		const Record &	vars = `Record()`,
		const String &	unit = `String()`
	)

static

static Int64 casacore::RecordGram::expr2Int	(	const String &	expr,
		const Record &	vars = `Record()`
	)

static

static String casacore::RecordGram::expr2String	(	const String &	expr,
		const Record &	vars = `Record()`
	)

static

static TableExprNode casacore::RecordGram::handleField ( const String & name )

static

Find the field name and create a TableExprNode from it.

To be called only by the yy parser (under theirMutex).

static TableExprNode casacore::RecordGram::handleFunc	(	const String &	name,
		const TableExprNodeSet &	arguments
	)

static

Handle a function.

To be called only by the yy parser (under theirMutex).

static TableExprNode casacore::RecordGram::handleLiteral ( RecordGramVal * )

static

Create a TableExprNode from a literal.

static TableExprNode casacore::RecordGram::handleRegex	(	const TableExprNode &	left,
		const String &	regex
	)

static

Handle a regex.

static TableExprNode casacore::RecordGram::parse	(	const RecordInterface &	record,
		const String &	expression
	)

static

Convert an expression string to an expression tree.

The expression will operate on a series of Record objects. The given record is needed to know the type of the fields used in the expression.

static TableExprNode casacore::RecordGram::parse	(	const Table &	table,
		const String &	expression
	)

static

Convert an expression string to an expression tree.

The expression will operate on the given table.

static void casacore::RecordGram::removeToken ( void * ptr )

inlinestaticprivate

Remove a token from the list of tokens to be deleted.

Definition at line 277 of file RecordGram.h.

References theirTokens.

static void casacore::RecordGram::setNodePtr ( TableExprNode * nodePtr )

inlinestatic

Set the final node pointer.

Definition at line 244 of file RecordGram.h.

References theirNodePtr.

Member Data Documentation

Mutex casacore::RecordGram::theirMutex

staticprivate

Definition at line 284 of file RecordGram.h.

TableExprNode* casacore::RecordGram::theirNodePtr

staticprivate

Definition at line 283 of file RecordGram.h.

Referenced by setNodePtr().

const RecordInterface* casacore::RecordGram::theirRecPtr

staticprivate

Definition at line 281 of file RecordGram.h.

const Table* casacore::RecordGram::theirTabPtr

staticprivate

Definition at line 282 of file RecordGram.h.

TaQLStyle casacore::RecordGram::theirTaQLStyle

static

Define the global TaQLStyle to use.

By default it is glish style.

Definition at line 249 of file RecordGram.h.

std::map<void*, Token> casacore::RecordGram::theirTokens

staticprivate

Definition at line 280 of file RecordGram.h.

Referenced by addToken(), and removeToken().

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

casa/casacore/tables/TaQL/RecordGram.h

Public Types

Static Public Member Functions

Static Public Attributes

Static Private Member Functions

Static Private Attributes

Detailed Description

Intended use:

Review Status

Prerequisite

Synopsis

Motivation

Member Enumeration Documentation

Member Function Documentation

Member Data Documentation