author | Jan Vrany <jan.vrany@fit.cvut.cz> |
Sat, 02 May 2015 07:03:07 +0200 | |
changeset 448 | 02db0b67ed3f |
parent 427 | a7f5e6de19d2 |
child 650 | 4c6ed0a28d18 |
permissions | -rw-r--r-- |
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"{ Package: 'stx:goodies/petitparser' }" |
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"{ NameSpace: Smalltalk }" |
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PPPredicateParser subclass:#PPPredicateObjectParser |
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instanceVariableNames:'' |
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classVariableNames:'' |
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poolDictionaries:'' |
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category:'PetitParser-Parsers' |
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! |
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PPPredicateObjectParser class instanceVariableNames:'cache' |
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" |
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No other class instance variables are inherited by this class. |
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" |
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! |
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!PPPredicateObjectParser class methodsFor:'instance creation'! |
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on: aBlock message: aString |
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^ self on: aBlock message: aString negated: [ :each | (aBlock value: each) not ] message: 'no ' , aString |
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! |
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on: aBlock message: aString negated: aNegatedBlock message: aNegatedString |
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^ self new initializeOn: aBlock message: aString negated: aNegatedBlock message: aNegatedString |
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! |
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startOfLine |
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^ PPStartOfLineParser new. |
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! ! |
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!PPPredicateObjectParser class methodsFor:'cache'! |
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cacheAt: aSymbol ifAbsentPut: aBlock |
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cache ifNil: [ ^aBlock value ]. |
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^(cache |
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at: aSymbol |
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ifAbsentPut: aBlock) copy |
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! |
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useCache: aBoolean |
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" |
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PPPredicateObjectParser useCache: true. |
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PPPredicateObjectParser useCache: false. |
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" |
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cache := aBoolean |
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ifTrue: [ Dictionary new ] |
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ifFalse: [ nil ] |
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! ! |
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!PPPredicateObjectParser class methodsFor:'factory-chars'! |
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blank |
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^self |
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cacheAt: #'blank' |
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ifAbsentPut: [ self |
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chars: (String with: Character space with: Character tab) message: 'blank expected' ] |
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! |
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char: aCharacter |
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^ self expect: aCharacter message: (String with: $" with: aCharacter with: $") , ' expected' |
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char: aCharacter message: aString |
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^ self expect: aCharacter message: aString |
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! |
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chars: aCollection message: aString |
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^ self on: (PPCharSetPredicate on: [ :char | aCollection includes: char ]) message: aString |
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! |
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cr |
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^self |
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cacheAt: #'cr' |
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ifAbsentPut: [ self char: (Character codePoint: 13) message: 'carriage return expected' ] |
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digit |
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^self |
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cacheAt: #'digit' |
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ifAbsentPut: [ self on: (PPCharSetPredicate on: [ :char | char isDigit ]) message: 'digit expected' ] |
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hex |
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^self |
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cacheAt: #'hex' |
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ifAbsentPut: [ self |
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on: (PPCharSetPredicate on: [ :char | |
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(char between: $0 and: $9) |
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or: [ (char between: $a and: $f) |
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or: [ (char between: $A and: $F) ] ] ]) |
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message: 'hex digit expected' ] |
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letter |
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^self |
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cacheAt: #'letter' |
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ifAbsentPut: [ self on: (PPCharSetPredicate on: [ :char | char isLetter ]) message: 'letter expected' ] |
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lf |
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^self |
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cacheAt: #'lf' |
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ifAbsentPut: [ self char: (Character codePoint: 10) ] |
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lowercase |
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^self |
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cacheAt: #'lowercase' |
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ifAbsentPut: [ self on: (PPCharSetPredicate on: [ :char | char isLowercase ]) message: 'lowercase letter expected' ] |
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newline |
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^self |
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cacheAt: #'newline' |
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ifAbsentPut: [ self chars: (String with: (Character codePoint: 13) with: (Character codePoint: 10)) message: 'newline expected' ] |
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punctuation |
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^self |
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cacheAt: #'punctuation' |
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ifAbsentPut: [ self chars: '.,"''?!!;:#$%&()*+-/<>=@[]\^_{}|~' message: 'punctuation expected' ] |
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space |
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^self |
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cacheAt: #'space' |
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ifAbsentPut: [ self on: (PPCharSetPredicate on: [ :char | char isSeparator ]) message: 'separator expected' ] |
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tab |
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^self |
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cacheAt: #'tab' |
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ifAbsentPut: [ self char: Character tab message: 'tab expected' ] |
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uppercase |
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^self |
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cacheAt: #'uppercase' |
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ifAbsentPut: [ self on: (PPCharSetPredicate on: [ :char | char isUppercase ]) message: 'uppercase letter expected' ] |
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word |
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^self |
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cacheAt: #'word' |
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ifAbsentPut: [ self on: (PPCharSetPredicate on: [ :char | char isAlphaNumeric ]) message: 'letter or digit expected' ] |
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! ! |
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!PPPredicateObjectParser class methodsFor:'factory-objects'! |
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any |
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^self |
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cacheAt: #'any' |
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ifAbsentPut: [ self |
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on: [ :each | true ] message: 'input expected' |
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negated: [ :each | false ] message: 'no input expected' ] |
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! |
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anyExceptAnyOf: aCollection |
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^ self |
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on: [ :each | (aCollection includes: each) not ] message: 'any except ' , aCollection printString , ' expected' |
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negated: [ :each | aCollection includes: each ] message: aCollection printString , ' not expected' |
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! |
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anyOf: aCollection |
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^ self |
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on: [ :each | aCollection includes: each ] message: 'any of ' , aCollection printString , ' expected' |
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negated: [ :each | (aCollection includes: each) not ] message: 'none of ' , aCollection printString , 'expected' |
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! |
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between: min and: max |
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^ self |
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on: [ :each | each >= min and: [ each <= max ] ] message: min printString , '..' , max printString , ' expected' |
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negated: [ :each | each < min or: [ each > max ] ] message: min printString , '..' , max printString , ' not expected' |
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! |
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endOfLine |
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^ PPEndOfLineParser new. |
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! |
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eof |
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^ PPEndOfFileParser new |
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189 |
! |
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0 | 191 |
expect: anObject |
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^ self expect: anObject message: anObject printString , ' expected' |
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! |
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expect: anObject message: aString |
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^ self |
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on: [ :each | each = anObject ] message: aString |
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negated: [ :each | each ~= anObject ] message: 'no ' , aString |
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427
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199 |
! |
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201 |
startOfLogicalLine |
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^ PPStartOfLogicalLineParser new. |
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204 |
! |
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205 |
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206 |
startOfWord |
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207 |
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^ PPStartOfWordParser new. |
0 | 209 |
! ! |
210 |
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!PPPredicateObjectParser methodsFor:'initialization'! |
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initializeOn: aBlock message: aString negated: aNegatedBlock message: aNegatedString |
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predicate := aBlock. |
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predicateMessage := aString. |
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negated := aNegatedBlock. |
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negatedMessage := aNegatedString |
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! ! |
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219 |
||
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!PPPredicateObjectParser methodsFor:'operators'! |
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221 |
||
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negate |
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"Answer a parser that is the negation of the receiving predicate parser." |
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^ self class |
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on: negated message: negatedMessage |
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0 | 227 |
negated: predicate message: predicateMessage |
228 |
! ! |
|
229 |
||
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!PPPredicateObjectParser methodsFor:'parsing'! |
|
231 |
||
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232 |
parseOn: aPPContext |
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^ (aPPContext atEnd not and: [ predicate value: aPPContext uncheckedPeek ]) |
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ifFalse: [ PPFailure message: predicateMessage context: aPPContext ] |
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ifTrue: [ aPPContext next ] |
0 | 236 |
! ! |
237 |
||
238 |
!PPPredicateObjectParser class methodsFor:'documentation'! |
|
239 |
||
40 | 240 |
version |
176 | 241 |
^ '$Header: /cvs/stx/stx/goodies/petitparser/PPPredicateObjectParser.st,v 1.5 2014-03-04 14:33:20 cg Exp $' |
40 | 242 |
! |
243 |
||
244 |
version_CVS |
|
176 | 245 |
^ '$Header: /cvs/stx/stx/goodies/petitparser/PPPredicateObjectParser.st,v 1.5 2014-03-04 14:33:20 cg Exp $' |
40 | 246 |
! |
247 |
||
387
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version_HG |
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250 |
^ '$Changeset: <not expanded> $' |
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! |
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252 |
|
0 | 253 |
version_SVN |
176 | 254 |
^ '$Id: PPPredicateObjectParser.st,v 1.5 2014-03-04 14:33:20 cg Exp $' |
0 | 255 |
! ! |
176 | 256 |