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

"{ NameSpace: Smalltalk }"

PPCNode subclass:#PPCAbstractCharacterNode

	instanceVariableNames:'character'

	classVariableNames:''

	poolDictionaries:''

	category:'PetitCompiler-Nodes'

!

!PPCAbstractCharacterNode methodsFor:'accessing'!

character

    ^ character

!

character: char

    character := char

!

prefix

    ^ #char

! !

!PPCAbstractCharacterNode methodsFor:'analysis'!

acceptsEpsilon

    ^ false

!

firstCharSet

    ^ PPCharSetPredicate on: [:e | e = character ]

!

recognizedSentencesPrim

    ^ Array with: character asString

! !

!PPCAbstractCharacterNode methodsFor:'comparison'!

= anotherNode

    super = anotherNode ifFalse: [ ^ false ].

    ^ character = anotherNode character.

!

hash

    ^ super hash bitXor: character hash

! !

!PPCAbstractCharacterNode methodsFor:'compiling'!

body: compiler

    | id |

    character ppcPrintable ifTrue: [ 

        id := character storeString 

    ] ifFalse: [ 

        id := compiler idFor: character prefixed: #char.

        compiler addConstant: (Character value: character asInteger) as: id .

    ].

    compiler add: '(context peek == ', id, ')'.

    compiler indent.

    compiler add: 'ifFalse: [ self error: ''', character asInteger asString, ' expected'' at: context position ] '.

    compiler add: 'ifTrue: [ context next ].'.

    compiler dedent.

! !

!PPCAbstractCharacterNode methodsFor:'printing'!

printNameOn: aStream

    super printNameOn: aStream.

    character = $" ifTrue: [ 

        "this is hack to allow for printing '' in comments..."

        aStream nextPutAll: ', '; nextPutAll: '$'''''.

        ^ self

    ].

    aStream nextPutAll: ', '; print: character

! !

!PPCAbstractCharacterNode class methodsFor:'documentation'!

version_HG

    ^ '$Changeset: <not expanded> $'

! !