"{ Package: 'stx:goodies/petitparser/compiler' }"
"{ NameSpace: Smalltalk }"
PPCRewritingVisitor subclass:#PPCSpecializingVisitor
instanceVariableNames:''
classVariableNames:''
poolDictionaries:''
category:'PetitCompiler-Visitors'
!
!PPCSpecializingVisitor methodsFor:'visiting'!
visitActionNode: node
("(node hasProperty: #trimmingToken) not and: [" node block isSymbol "]") ifTrue: [
self change.
^ PPCSymbolActionNode new
block: node block;
name: node name;
child: node child;
yourself
].
^ super visitActionNode: node
!
visitForwardNode: node
self visitChildren: node.
node name ifNil: [
self change.
^ node child.
].
node child name ifNil: [
self change.
node child name: node name.
^ node child
].
(node child name = node name) ifTrue: [
self change.
^ node child
].
^ node
!
visitNotNode: node
self visitChildren: node.
(node child isKindOf: PPCAbstractLiteralNode) ifTrue: [
self change.
^ PPCNotLiteralNode new
name: node name;
literal: node child literal;
yourself
].
(node child isKindOf: PPCMessagePredicateNode) ifTrue: [
self change.
^ PPCNotMessagePredicateNode new
name: node name;
message: node child message;
yourself
].
(node child isKindOf: PPCCharSetPredicateNode) ifTrue: [
self change.
^ PPCNotCharSetPredicateNode new
name: node name;
predicate: node child predicate;
yourself
].
(node child isKindOf: PPCCharacterNode) ifTrue: [
self change.
^ PPCNotCharacterNode new
name: node name;
character: node child character;
yourself
].
^ node
"Modified: / 23-04-2015 / 12:02:15 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!
visitPredicateNode: node
| charSet |
(node predicate class == PPCharSetPredicate) ifTrue: [
charSet := node predicate.
].
charSet := PPCharSetPredicate on: node predicate.
(charSet equals: (PPCharSetPredicate on: [ :char | char isLetter])) ifTrue: [
change := true.
^ PPCMessagePredicateNode new
name: node name;
message: #isLetter;
predicate: node predicate;
yourself
].
(charSet equals: (PPCharSetPredicate on: [ :char | char isDigit])) ifTrue: [
change := true.
^ PPCMessagePredicateNode new
name: node name;
message: #isDigit;
predicate: node predicate;
yourself
].
(charSet equals: (PPCharSetPredicate on: [ :char | char isAlphaNumeric])) ifTrue: [
change := true.
^ PPCMessagePredicateNode new
name: node name;
message: #isAlphaNumeric;
predicate: node predicate;
yourself
].
(charSet equals: (PPCharSetPredicate on: [ :char | char isSeparator])) ifTrue: [
change := true.
^ PPCMessagePredicateNode new
name: node name;
message: #isSeparator;
predicate: node predicate;
yourself
].
(charSet equals: (PPCharSetPredicate on: [ :char | true ])) ifTrue: [
change := true.
^ PPCAnyNode new
name: node name;
yourself
].
change := true.
^ PPCCharSetPredicateNode new
name: node name;
predicate: charSet;
yourself.
!
visitStarNode: node
self visitChildren: node.
(node child isKindOf: PPCMessagePredicateNode) ifTrue: [
self change.
^ PPCStarMessagePredicateNode new
name: node name;
child: node child;
message: node child message;
yourself
].
(node child isKindOf: PPCAnyNode) ifTrue: [
self change.
^ PPCStarAnyNode new
name: node name;
child: node child;
yourself
].
(node child isKindOf: PPCCharSetPredicateNode) ifTrue: [
self change.
^ PPCStarCharSetPredicateNode new
name: node name;
predicate: node child predicate;
child: node child;
yourself
].
^ node
!
visitTokenConsumeNode: node
"Let the Scanner to handle this stuff"
^ node
!
visitTokenizingParserNode: node
self visitChild: node parser of: node.
^ node
!
visitTrimmingTokenNode: node
self visitChildren: node.
(node child isKindOf: PPCCharacterNode) ifTrue: [
self change.
^ PPCTrimmingCharacterTokenNode new
child: node child;
whitespace: node whitespace;
tokenClass: node tokenClass;
name: node name;
yourself
].
^ node
"Modified: / 21-05-2015 / 14:41:53 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !
!PPCSpecializingVisitor class methodsFor:'documentation'!
version_HG
^ '$Changeset: <not expanded> $'
! !