VCF::VFFParser Class Reference

A class used for parsing VFF files, at this moment (8/25/2001) meant for internal use only. More...

#include <vcf/FoundationKit/VFFParser.h>

Inheritance diagram for VCF::VFFParser:


Public Types
enum	{ PARSE_BUF_SIZE = 4096, TO_EOF = 0, TO_SYMBOL, TO_STRING, TO_INTEGER, TO_FLOAT, TO_COMMENT }
Public Member Functions
	VFFParser (InputStream *is)
virtual	~VFFParser ()
void	resetStream ()
void	checkToken (const VCFChar &T)
void	checkTokenSymbol (const String &s)
void	error (const String &Ident)
void	errorStr (const String &Message)
VCFChar	nextToken ()
int32	sourcePos ()
String	tokenComponentIdent ()
double	tokenFloat ()
int32	tokenInt ()
String	tokenString ()
bool	tokenSymbolIs (const String &s)
int32	getSourceLine ()
VCFChar	getToken ()
String	binHexToString ()
void	savePosition ()
void	restorePosition ()
Protected Member Functions
void	skipBlanks ()
Protected Attributes
InputStream *	stream_
int32	origin_
VCFChar *	buffer_
VCFChar *	bufPtr_
VCFChar *	bufEnd_
ParsePosition	current_
ParsePosition	saved_

Detailed Description

A class used for parsing VFF files, at this moment (8/25/2001) meant for internal use only.

The Visual Form File (VFF) is a text based format used to store components. The syntax can be represented in Backus-Naur format:

component-decl ::= "object" component-id component-properties 
    *(component-decl) component-delegates  "end"
component-id ::= component-name component-class ["," component-classid]

component-name ::= id
id ::= ALPHA *(ALPHA | DIGIT | '_' )
component-class ::= ALPHA *(ALPHA | DIGIT | '_' | "::" )
component-classid ::= ''' 1*(ALPHA | DIGIT | '-' ) '''

component-properties ::= 1*component-property
component-property ::= property-name '=' property-value
property-name ::= id | property-object-name
property-object-name ::= property-name '.' property-name
property-value ::= property-string | property-number | 
    property-component-ref | property-enum |
    property-enum-mask | property-binary | property-bool

property-string ::= ''' *(ALPHA | DIGIT | 'any printable unicode char' )  '''
property-number ::= 1*DIGIT ['.' 1*(DIGIT) ]
property-component-ref ::= ('@' component-name) | "null"
property-enum ::= id
property-enum-mask ::= '[' property-enum *[',' property-enum]  ']'
property-binary ::= '{'  binary-data  '}'
binary-data ::=  1*(binary-byte)
binary-byte ::= (DIGIT | 'A' | 'B' | 'C' | 'D' | 'E' | 'F' ) 
    (DIGIT | 'A' | 'B' | 'C' | 'D' | 'E' | 'F' )
property-bool ::=  "true" | "false"

component-delegates ::= "delegates"  *(component-delegate-decl) "end"
component-delegate-decl ::= delegate-name '=' delegate-array
delegate-name ::= id
delegate-array ::= '[' 1*(event-handler-ref)  ']'
event-handler-ref ::= component-instance '@' component-callback-method
component-instance ::= id
component-callback-method ::= component-classname "::" component-methodname
component-classname ::= id
component-methodname ::= id