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##  W3C SOFTWARE AND DOCUMENT NOTICE AND LICENSE
## https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document
## This is Appendix C : https://www.w3.org/TR/shacl/#shacl-shacl
## Copy taken: 2019-07-16
## --------

@prefix rdf:   .
@prefix rdfs:  .
@prefix sh:    .
@prefix xsd:   .

@prefix shsh:  .

shsh:
	rdfs:label "SHACL for SHACL"@en ;
	rdfs:comment "This shapes graph can be used to validate SHACL shapes graphs against a subset of the SHACL syntax rules."@en ;
	sh:declare [
		sh:prefix "shsh" ;
		sh:namespace "http://www.w3.org/ns/shacl-shacl#" ;
	] .

	
shsh:ListShape
	a sh:NodeShape ;
	rdfs:label "List shape"@en ;
	rdfs:comment "A shape describing well-formed RDF lists. Currently does not check for non-recursion. This could be expressed using SHACL-SPARQL."@en ;
	rdfs:seeAlso  ;
	sh:property [
		sh:path [ sh:zeroOrMorePath rdf:rest ] ;
		rdfs:comment "Each list member (including this node) must be have the shape shsh:ListNodeShape."@en ;
		sh:hasValue rdf:nil ;
		sh:node shsh:ListNodeShape ;
	] .

shsh:ListNodeShape
	a sh:NodeShape ;
	rdfs:label "List node shape"@en ;
	rdfs:comment "Defines constraints on what it means for a node to be a node within a well-formed RDF list. Note that this does not check whether the rdf:rest items are also well-formed lists as this would lead to unsupported recursion."@en ;
	sh:or ( [
				sh:hasValue rdf:nil ;
        		sh:property [
					sh:path rdf:first ;
					sh:maxCount 0 ;
				] ;
				sh:property [
					sh:path rdf:rest ;
					sh:maxCount 0 ;
				] ;
			]
			[
				sh:not [ sh:hasValue rdf:nil ] ;
				sh:property [
					sh:path rdf:first ;
					sh:maxCount 1 ;
					sh:minCount 1 ;
				] ;
				sh:property [
					sh:path rdf:rest ;
					sh:maxCount 1 ;
					sh:minCount 1 ;
				] ;
			] ) .

shsh:ShapeShape
	a sh:NodeShape ;
	rdfs:label "Shape shape"@en ;
	rdfs:comment "A shape that can be used to validate syntax rules for other shapes."@en ;
	
	# See https://www.w3.org/TR/shacl/#shapes for what counts as a shape
	sh:targetClass sh:NodeShape ;
	sh:targetClass sh:PropertyShape ;
	sh:targetSubjectsOf sh:targetClass, sh:targetNode, sh:targetObjectsOf, sh:targetSubjectsOf ;
	sh:targetSubjectsOf sh:and, sh:class, sh:closed, sh:datatype, sh:disjoint, sh:equals, sh:flags, sh:hasValue,
		sh:ignoredProperties, sh:in, sh:languageIn, sh:lessThan, sh:lessThanOrEquals, sh:maxCount, sh:maxExclusive,
		sh:maxInclusive, sh:maxLength, sh:minCount, sh:minExclusive, sh:minInclusive, sh:minLength, sh:node, sh:nodeKind,
		sh:not, sh:or, sh:pattern, sh:property, sh:qualifiedMaxCount, sh:qualifiedMinCount, sh:qualifiedValueShape,
		sh:qualifiedValueShape, sh:qualifiedValueShapesDisjoint, sh:qualifiedValueShapesDisjoint, sh:uniqueLang, sh:xone ;

	sh:targetObjectsOf sh:node ;        # node-node
	sh:targetObjectsOf sh:not ;         # not-node
	sh:targetObjectsOf sh:property ;    # property-node
	sh:targetObjectsOf sh:qualifiedValueShape ; # qualifiedValueShape-node

	# Shapes are either node shapes or property shapes
	sh:xone ( shsh:NodeShapeShape shsh:PropertyShapeShape ) ;

	sh:property [
		sh:path sh:targetNode ;
		sh:nodeKind	sh:IRIOrLiteral ;   # targetNode-nodeKind
	] ; 
	sh:property [
		sh:path sh:targetClass ;
		sh:nodeKind sh:IRI ;            # targetClass-nodeKind
	] ;
	sh:property [
		sh:path sh:targetSubjectsOf ;
		sh:nodeKind sh:IRI ;            # targetSubjectsOf-nodeKind
	] ;
	sh:property [
		sh:path sh:targetObjectsOf ;
		sh:nodeKind sh:IRI ;            # targetObjectsOf-nodeKind
	] ;
	sh:or ( [ sh:not [ 
				sh:class rdfs:Class ; 
				sh:or ( [ sh:class sh:NodeShape ] [ sh:class sh:PropertyShape ] )
			] ]
			[ sh:nodeKind sh:IRI ]
		  ) ;                           # implicit-targetClass-nodeKind
	
	sh:property [
		sh:path sh:severity ;
		sh:maxCount 1 ;                 # severity-maxCount
		sh:nodeKind sh:IRI ;            # severity-nodeKind
	] ;
	sh:property [
		sh:path sh:message ;
		sh:or ( [ sh:datatype xsd:string ] [ sh:datatype rdf:langString ] ) ;   # message-datatype
	] ;
	sh:property [
		sh:path sh:deactivated ;
		sh:maxCount 1 ;                 # deactivated-maxCount
		sh:in ( true false ) ;          # deactivated-datatype
	] ;

	sh:property [
		sh:path sh:and ;
		sh:node shsh:ListShape ;        # and-node
	] ;
	sh:property [
		sh:path sh:class ;
		sh:nodeKind sh:IRI ;            # class-nodeKind
	] ;
	sh:property [
		sh:path sh:closed ;
		sh:datatype xsd:boolean ;       # closed-datatype
		sh:maxCount 1 ;                 # multiple-parameters
	] ;
	sh:property [
		sh:path sh:ignoredProperties ;
		sh:node shsh:ListShape ;        # ignoredProperties-node
		sh:maxCount 1 ;                 # multiple-parameters
	] ;
	sh:property [
		sh:path ( sh:ignoredProperties [ sh:zeroOrMorePath rdf:rest ] rdf:first ) ;
		sh:nodeKind sh:IRI ;            # ignoredProperties-members-nodeKind
	] ;
	sh:property [
		sh:path sh:datatype ;
		sh:nodeKind sh:IRI ;            # datatype-nodeKind
		sh:maxCount 1 ;                 # datatype-maxCount
	] ;
	sh:property [
		sh:path sh:disjoint ;
		sh:nodeKind sh:IRI ;            # disjoint-nodeKind
	] ;
	sh:property [
		sh:path sh:equals ;
		sh:nodeKind sh:IRI ;            # equals-nodeKind
	] ;
	sh:property [
		sh:path sh:in ;
		sh:maxCount 1 ;                 # in-maxCount		
		sh:node shsh:ListShape ;        # in-node
	] ;
	sh:property [
		sh:path sh:languageIn ;
		sh:maxCount 1 ;                 # languageIn-maxCount
		sh:node shsh:ListShape ;        # languageIn-node
	] ;
	sh:property [
		sh:path ( sh:languageIn [ sh:zeroOrMorePath rdf:rest ] rdf:first ) ;
		sh:datatype xsd:string ;        # languageIn-members-datatype
	] ;
	sh:property [
		sh:path sh:lessThan ;
		sh:nodeKind sh:IRI ;            # lessThan-nodeKind
	] ;
	sh:property [
		sh:path sh:lessThanOrEquals ;
		sh:nodeKind sh:IRI ;            # lessThanOrEquals-nodeKind
	] ;
	sh:property [
		sh:path sh:maxCount ;
		sh:datatype xsd:integer ;       # maxCount-datatype
		sh:maxCount 1 ;                 # maxCount-maxCount
	] ;
	sh:property [
		sh:path sh:maxExclusive ;
		sh:maxCount 1 ;                 # maxExclusive-maxCount
		sh:nodeKind sh:Literal ;        # maxExclusive-nodeKind
	] ;
	sh:property [
		sh:path sh:maxInclusive ;
		sh:maxCount 1 ;                 # maxInclusive-maxCount
		sh:nodeKind sh:Literal ;        # maxInclusive-nodeKind
	] ;
	sh:property [
		sh:path sh:maxLength ;
		sh:datatype xsd:integer ;       # maxLength-datatype
		sh:maxCount 1 ;                 # maxLength-maxCount
	] ;
	sh:property [
		sh:path sh:minCount ;
		sh:datatype xsd:integer ;       # minCount-datatype
		sh:maxCount 1 ;                 # minCount-maxCount
	] ;
	sh:property [
		sh:path sh:minExclusive ;
		sh:maxCount 1 ;                 # minExclusive-maxCount
		sh:nodeKind sh:Literal ;        # minExclusive-nodeKind
	] ;
	sh:property [
		sh:path sh:minInclusive ;
		sh:maxCount 1 ;                 # minInclusive-maxCount
		sh:nodeKind sh:Literal ;        # minInclusive-nodeKind
	] ;
	sh:property [
		sh:path sh:minLength ;
		sh:datatype xsd:integer ;       # minLength-datatype
		sh:maxCount 1 ;                 # minLength-maxCount
	] ;
	sh:property [
		sh:path sh:nodeKind ;
		sh:in ( sh:BlankNode sh:IRI sh:Literal sh:BlankNodeOrIRI sh:BlankNodeOrLiteral sh:IRIOrLiteral ) ;	# nodeKind-in
		sh:maxCount 1 ;                 # nodeKind-maxCount
	] ;
	sh:property [
		sh:path sh:or ;
		sh:node shsh:ListShape ;        # or-node
	] ;
	sh:property [
		sh:path sh:pattern ;
		sh:datatype xsd:string ;        # pattern-datatype
		sh:maxCount 1 ;                 # multiple-parameters
		# Not implemented: syntax rule pattern-regex
	] ;
	sh:property [
		sh:path sh:flags ;
		sh:datatype xsd:string ;        # flags-datatype
		sh:maxCount 1 ;                 # multiple-parameters
	] ;
	sh:property [
		sh:path sh:qualifiedMaxCount ;
		sh:datatype xsd:integer ;       # qualifiedMaxCount-datatype
		sh:maxCount 1 ;                 # multiple-parameters
	] ;
	sh:property [
		sh:path sh:qualifiedMinCount ;
		sh:datatype xsd:integer ;       # qualifiedMinCount-datatype
		sh:maxCount 1 ;                 # multiple-parameters
	] ;
	sh:property [
		sh:path sh:qualifiedValueShape ;
		sh:maxCount 1 ;                 # multiple-parameters
	] ;
	sh:property [
		sh:path sh:qualifiedValueShapesDisjoint ;
		sh:datatype xsd:boolean ;       # qualifiedValueShapesDisjoint-datatype
		sh:maxCount 1 ;                 # multiple-parameters
	] ;
	sh:property [
		sh:path sh:uniqueLang ;
		sh:datatype xsd:boolean ;       # uniqueLang-datatype
		sh:maxCount 1 ;                 # uniqueLang-maxCount
	] ;
	sh:property [
		sh:path sh:xone ;
		sh:node shsh:ListShape ;        # xone-node
	] .
	
shsh:NodeShapeShape
	a sh:NodeShape ;
	sh:targetObjectsOf sh:node ;        # node-node
	sh:property [
		sh:path sh:path ;
		sh:maxCount 0 ;                 # NodeShape-path-maxCount
	] ;
	sh:property [
		sh:path sh:lessThan ;
		sh:maxCount 0 ;                 # lessThan-scope
	] ;
	sh:property [
		sh:path sh:lessThanOrEquals ;
		sh:maxCount 0 ;                 # lessThanOrEquals-scope
	] ;
	sh:property [
		sh:path sh:maxCount ;
		sh:maxCount 0 ;                 # maxCount-scope
	] ;
	sh:property [
		sh:path sh:minCount ;
		sh:maxCount 0 ;                 # minCount-scope
	] ;
	sh:property [
		sh:path sh:qualifiedValueShape ;
		sh:maxCount 0 ;                 # qualifiedValueShape-scope
	] ;
	sh:property [
		sh:path sh:uniqueLang ;
		sh:maxCount 0 ;                 # uniqueLang-scope
	] .

shsh:PropertyShapeShape
	a sh:NodeShape ;
	sh:targetObjectsOf sh:property ;    # property-node
	sh:property [
		sh:path sh:path ;
		sh:maxCount 1 ;                 # path-maxCount
		sh:minCount 1 ;                 # PropertyShape-path-minCount
		sh:node shsh:PathShape ;        # path-node
	] .

# Values of sh:and, sh:or and sh:xone must be lists of shapes
shsh:ShapesListShape
	a sh:NodeShape ;
	sh:targetObjectsOf sh:and ;         # and-members-node
	sh:targetObjectsOf sh:or ;          # or-members-node
	sh:targetObjectsOf sh:xone ;        # xone-members-node
	sh:property [
		sh:path ( [ sh:zeroOrMorePath rdf:rest ] rdf:first ) ;
		sh:node shsh:ShapeShape ;
	] .


# A path of blank node path syntax, used to simulate recursion
_:PathPath
	sh:alternativePath (
		( [ sh:zeroOrMorePath rdf:rest ] rdf:first )
		( sh:alternativePath [ sh:zeroOrMorePath rdf:rest ] rdf:first )
		sh:inversePath
		sh:zeroOrMorePath
		sh:oneOrMorePath
		sh:zeroOrOnePath 
	) .

shsh:PathShape
	a sh:NodeShape ;
	rdfs:label "Path shape"@en ;
	rdfs:comment "A shape that can be used to validate the syntax rules of well-formed SHACL paths."@en ;
	rdfs:seeAlso  ;
	sh:property [
		sh:path [ sh:zeroOrMorePath _:PathPath ] ;
		sh:node shsh:PathNodeShape ;
	] .

shsh:PathNodeShape
	sh:xone (                           # path-metarule
			[ sh:nodeKind sh:IRI ]          # 2.3.1.1: Predicate path
			[ sh:nodeKind sh:BlankNode ;    # 2.3.1.2: Sequence path
			  sh:node shsh:PathListWithAtLeast2Members ;
			]
			[ sh:nodeKind sh:BlankNode ;    # 2.3.1.3: Alternative path
			  sh:closed true ;
			  sh:property [
			    sh:path sh:alternativePath ;
			    sh:node shsh:PathListWithAtLeast2Members ;
			    sh:minCount 1 ;
			    sh:maxCount 1 ;
			  ]
			]
			[ sh:nodeKind sh:BlankNode ;    # 2.3.1.4: Inverse path
			  sh:closed true ;
			  sh:property [
			    sh:path sh:inversePath ;
			    sh:minCount 1 ;
			    sh:maxCount 1 ;
			  ] 
			]
			[ sh:nodeKind sh:BlankNode ;    # 2.3.1.5: Zero-or-more path
			  sh:closed true ;
			  sh:property [
			    sh:path sh:zeroOrMorePath ;
			    sh:minCount 1 ;
			    sh:maxCount 1 ;
			  ] 
			]
			[ sh:nodeKind sh:BlankNode ;    # 2.3.1.6: One-or-more path
			  sh:closed true ;
			  sh:property [
			    sh:path sh:oneOrMorePath ;
			    sh:minCount 1 ;
			    sh:maxCount 1 ;
			  ] 
			]
			[ sh:nodeKind sh:BlankNode ;    # 2.3.1.7: Zero-or-one path
			  sh:closed true ;
			  sh:property [
			    sh:path sh:zeroOrOnePath ;
			    sh:minCount 1 ;
			    sh:maxCount 1 ;
			  ] 
			]
		) .

shsh:PathListWithAtLeast2Members
	a sh:NodeShape ;
	sh:node shsh:ListShape ;
	sh:property [
		sh:path [ sh:oneOrMorePath rdf:rest ] ;
		sh:minCount 2 ;    # 1 other list node plus rdf:nil
	] .

shsh:ShapesGraphShape
	a sh:NodeShape ;
	sh:targetObjectsOf sh:shapesGraph ;
	sh:nodeKind sh:IRI .                # shapesGraph-nodeKind

shsh:EntailmentShape
	a sh:NodeShape ;
	sh:targetObjectsOf sh:entailment ;
	sh:nodeKind sh:IRI .                # entailment-nodeKind




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