PPOptionalParser.st
author Claus Gittinger <cg@exept.de>
Thu, 18 Aug 2011 20:56:17 +0200
changeset 0 739fe9b7253e
child 4 90de244a7fa2
permissions -rw-r--r--
*** empty log message ***
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
0
739fe9b7253e *** empty log message ***
Claus Gittinger <cg@exept.de>
parents:
diff changeset
     1
"{ Package: 'squeak:petitparser' }"
739fe9b7253e *** empty log message ***
Claus Gittinger <cg@exept.de>
parents:
diff changeset
     2
739fe9b7253e *** empty log message ***
Claus Gittinger <cg@exept.de>
parents:
diff changeset
     3
PPDelegateParser subclass:#PPOptionalParser
739fe9b7253e *** empty log message ***
Claus Gittinger <cg@exept.de>
parents:
diff changeset
     4
	instanceVariableNames:''
739fe9b7253e *** empty log message ***
Claus Gittinger <cg@exept.de>
parents:
diff changeset
     5
	classVariableNames:''
739fe9b7253e *** empty log message ***
Claus Gittinger <cg@exept.de>
parents:
diff changeset
     6
	poolDictionaries:''
739fe9b7253e *** empty log message ***
Claus Gittinger <cg@exept.de>
parents:
diff changeset
     7
	category:'PetitParser-Parsers'
739fe9b7253e *** empty log message ***
Claus Gittinger <cg@exept.de>
parents:
diff changeset
     8
!
739fe9b7253e *** empty log message ***
Claus Gittinger <cg@exept.de>
parents:
diff changeset
     9
739fe9b7253e *** empty log message ***
Claus Gittinger <cg@exept.de>
parents:
diff changeset
    10
739fe9b7253e *** empty log message ***
Claus Gittinger <cg@exept.de>
parents:
diff changeset
    11
!PPOptionalParser methodsFor:'parsing'!
739fe9b7253e *** empty log message ***
Claus Gittinger <cg@exept.de>
parents:
diff changeset
    12
739fe9b7253e *** empty log message ***
Claus Gittinger <cg@exept.de>
parents:
diff changeset
    13
parseOn: aStream
739fe9b7253e *** empty log message ***
Claus Gittinger <cg@exept.de>
parents:
diff changeset
    14
	| element |
739fe9b7253e *** empty log message ***
Claus Gittinger <cg@exept.de>
parents:
diff changeset
    15
	element := parser parseOn: aStream.
739fe9b7253e *** empty log message ***
Claus Gittinger <cg@exept.de>
parents:
diff changeset
    16
	^ element isPetitFailure ifFalse: [ ^ element ]
739fe9b7253e *** empty log message ***
Claus Gittinger <cg@exept.de>
parents:
diff changeset
    17
! !
739fe9b7253e *** empty log message ***
Claus Gittinger <cg@exept.de>
parents:
diff changeset
    18
739fe9b7253e *** empty log message ***
Claus Gittinger <cg@exept.de>
parents:
diff changeset
    19
!PPOptionalParser class methodsFor:'documentation'!
739fe9b7253e *** empty log message ***
Claus Gittinger <cg@exept.de>
parents:
diff changeset
    20
739fe9b7253e *** empty log message ***
Claus Gittinger <cg@exept.de>
parents:
diff changeset
    21
version_SVN
739fe9b7253e *** empty log message ***
Claus Gittinger <cg@exept.de>
parents:
diff changeset
    22
    ^ '$Id: PPOptionalParser.st,v 1.1 2011-08-18 18:56:17 cg Exp $'
739fe9b7253e *** empty log message ***
Claus Gittinger <cg@exept.de>
parents:
diff changeset
    23
! !