PPGreedyRepeatingParser.st
changeset 166 749f1a5c6d3e
child 377 6112a403a52d
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PPGreedyRepeatingParser.st	Tue Mar 04 15:32:42 2014 +0100
@@ -0,0 +1,50 @@
+"{ Package: 'stx:goodies/petitparser' }"
+
+PPLimitedRepeatingParser subclass:#PPGreedyRepeatingParser
+	instanceVariableNames:''
+	classVariableNames:''
+	poolDictionaries:''
+	category:'PetitParser-Parsers'
+!
+
+
+!PPGreedyRepeatingParser methodsFor:'parsing'!
+
+parseOn: aStream
+	| start element elements positions |
+	start := aStream position.
+	elements := OrderedCollection new.
+	[ elements size < min ] whileTrue: [ 
+		(element := parser parseOn: aStream) isPetitFailure ifTrue: [ 
+			aStream position: start.
+			^ element ].
+		elements addLast: element ].
+	positions := OrderedCollection with: aStream position.
+	[ elements size < max and: [ (element := parser parseOn: aStream) isPetitFailure not ] ] whileTrue: [
+		elements addLast: element.
+		positions addLast: aStream position ].
+	[ positions isEmpty ] whileFalse: [
+		aStream position: positions last.
+		element := limit parseOn: aStream.
+		element isPetitFailure ifFalse: [
+			aStream position: positions last.
+			^ elements asArray ].
+		elements isEmpty ifTrue: [
+			aStream position: start.
+			^ element ].
+		elements removeLast.
+		positions removeLast ].
+	aStream position: start.
+	^ PPFailure message: 'overflow' at: start
+! !
+
+!PPGreedyRepeatingParser class methodsFor:'documentation'!
+
+version
+    ^ '$Header: /cvs/stx/stx/goodies/petitparser/PPGreedyRepeatingParser.st,v 1.1 2014-03-04 14:32:42 cg Exp $'
+!
+
+version_CVS
+    ^ '$Header: /cvs/stx/stx/goodies/petitparser/PPGreedyRepeatingParser.st,v 1.1 2014-03-04 14:32:42 cg Exp $'
+! !
+