PPStartOfLogicalLineParser.st
author Jan Vrany <jan.vrany@fit.cvut.cz>
Sat, 19 Mar 2016 00:12:47 +0100
changeset 556 51c6afba5c91
parent 427 a7f5e6de19d2
permissions -rw-r--r--
CI: Use VM provided by Pharo team on both Linux and Windows. Hand-crafter Pharo VM is no longer needed as the Linux slave in SWING build farm has been upgraded so it has compatible GLIBC. This makes CI scripts simpler and more usable for other people.

"{ Package: 'stx:goodies/petitparser' }"

"{ NameSpace: Smalltalk }"

PPParser subclass:#PPStartOfLogicalLineParser
	instanceVariableNames:''
	classVariableNames:''
	poolDictionaries:''
	category:'PetitParser-Parsers'
!

!PPStartOfLogicalLineParser methodsFor:'as yet unclassified'!

isBlank: character
	^ (character == Character space or: [character == Character tab])
!

parseOn: aPPContext
	aPPContext peek isAlphaNumeric ifFalse: [ 
		^ PPFailure message: 'Start of logical line expected' context: aPPContext 
	].

	aPPContext isStartOfLine ifTrue: [ ^ #startOfLogicalLine ].
	
	
	[ aPPContext position ~= 0 ] whileTrue: [  
		aPPContext back.
		(self isBlank: aPPContext peek) ifFalse: [ 
			^ PPFailure message: 'Start of logical line expected' context: aPPContext
		].
		aPPContext isStartOfLine ifTrue: [ ^ #startOfLogicalLine ].
	]
! !