casacore::RecordGram Class Reference

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.
static TableExprNode	parse (const Table &table, const String &expression)
	Convert an expression string to an expression tree.
static TableExprNode	handleLiteral (RecordGramVal *)
	Create a TableExprNode from a literal.
static TableExprNode	handleField (const String &name)
	Find the field name and create a TableExprNode from it.
static TableExprNode	handleFunc (const String &name, const TableExprNodeSet &arguments)
	Handle a function.
static TableExprNode	handleRegex (const TableExprNode &left, const String &regex)
	Handle a regex.
static void	setNodePtr (TableExprNode *nodePtr)
	Set the final node pointer.
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.
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.
static void	deleteToken (RecordGramVal *ptr)
static void	deleteToken (TableExprNodeSet *ptr)
static void	deleteToken (TableExprNodeSetElem *ptr)
static void	deleteTokenStorage ()
	Delete all tokens not deleted yet.
Static Public Attributes
static TaQLStyle	theirTaQLStyle
	Define the global TaQLStyle to use.
Static Private Member Functions
static TableExprNode	doParse (const String &expression)
	Do the conversion of an expression string to an expression tree.
static void	addToken (void *ptr, Token type)
	Add a token to the list of tokens to be deleted.
static void	removeToken (void *ptr)
	Remove a token from the list of tokens to be deleted.
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 175 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 179 of file RecordGram.h.

Member Function Documentation

static void casacore::RecordGram::addToken	(	void *	ptr,
		Token	type
	)			`[inline, static, private]`

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

Definition at line 238 of file RecordGram.h.

References theirTokens.

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

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

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

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.

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

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

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

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

Delete a token and remove from the list.

static void casacore::RecordGram::deleteTokenStorage ( ) [static]

Delete all tokens not deleted yet.

static TableExprNode casacore::RecordGram::doParse ( const String & expression ) [static, private]

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

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

Find the field name and create a TableExprNode from it.

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

Handle a function.

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 Table &	table,
		const String &	expression
	)			`[static]`

Convert an expression string to an expression tree.

The expression will operate on the given table.

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 void casacore::RecordGram::removeToken ( void * ptr ) [inline, static, private]

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

Definition at line 241 of file RecordGram.h.

References theirTokens.

static void casacore::RecordGram::setNodePtr ( TableExprNode * nodePtr ) [inline, static]

Set the final node pointer.

Definition at line 212 of file RecordGram.h.

References theirNodePtr.

Member Data Documentation

Mutex casacore::RecordGram::theirMutex [static, private]

Definition at line 248 of file RecordGram.h.

TableExprNode* casacore::RecordGram::theirNodePtr [static, private]

Definition at line 247 of file RecordGram.h.

Referenced by setNodePtr().

const RecordInterface* casacore::RecordGram::theirRecPtr [static, private]

Definition at line 245 of file RecordGram.h.

const Table* casacore::RecordGram::theirTabPtr [static, private]

Definition at line 246 of file RecordGram.h.

TaQLStyle casacore::RecordGram::theirTaQLStyle [static]

Define the global TaQLStyle to use.

By default it is glish style.

Definition at line 217 of file RecordGram.h.

std::map<void*, Token> casacore::RecordGram::theirTokens [static, private]

Definition at line 244 of file RecordGram.h.

Referenced by addToken(), and removeToken().

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

casacore/tables/TaQL/RecordGram.h

casacore::RecordGram Class Reference

Public Types

Static Public Member Functions

Static Public Attributes

Static Private Member Functions

Static Private Attributes