non breaking refactors

amf-shapes/shared/src/main/scala/amf/shapes/client/scala/model/domain/ShapeHelpers.scala

@@ -2,7 +2,7 @@ package amf.shapes.client.scala.model.domain
 
 import amf.core.client.scala.errorhandling.AMFErrorHandler
 import amf.core.client.scala.model.domain.{Linkable, RecursiveShape, Shape}
-import amf.core.client.scala.traversal.ModelTraversalRegistry
+import amf.core.client.scala.traversal.{ModelTraversalRegistry, ShapeTraversalRegistry}
 import amf.core.internal.annotations.ExplicitField
 import amf.core.internal.validation.CoreValidations.RecursiveShapeSpecification
 import amf.shapes.internal.annotations.ParsedFromTypeExpression
@@ -32,7 +32,7 @@ trait ShapeHelpers { this: Shape =>
 
  def cloneShape(recursionErrorHandler: Option[AMFErrorHandler],
  withRecursionBase: Option[String] = None,
- traversal: ModelTraversalRegistry = ModelTraversalRegistry(),
+ traversal: ShapeTraversalRegistry = ShapeTraversalRegistry(),
  cloneExamples: Boolean = false): this.type = {
  if (traversal.isInCurrentPath(this.id)) {
  buildFixPoint(withRecursionBase, this.name.value(), this, recursionErrorHandler).asInstanceOf[this.type]

amf-shapes/shared/src/main/scala/amf/shapes/internal/domain/resolution/recursion/RecursionErrorRegister.scala

@@ -2,61 +2,67 @@ package amf.shapes.internal.domain.resolution.recursion
 
 import amf.core.client.scala.errorhandling.AMFErrorHandler
 import amf.core.client.scala.model.domain.{RecursiveShape, Shape}
-import amf.core.client.scala.traversal.ModelTraversalRegistry
+import amf.core.client.scala.traversal.{ModelTraversalRegistry, ShapeTraversalRegistry}
 import amf.core.internal.validation.CoreValidations.RecursiveShapeSpecification
 
 import scala.collection.mutable.ListBuffer
 
 class RecursionErrorRegister(errorHandler: AMFErrorHandler) {
  private val errorRegister = ListBuffer[String]()
 
- private def buildRecursion(base: Option[String], s: Shape): RecursiveShape = {
+ def buildRecursion(base: Option[String], s: Shape): RecursiveShape = {
  val fixPointId = base.getOrElse(s.id)
  val r = RecursiveShape(s).withFixPoint(fixPointId)
  r
  }
 
- def recursionAndError(root: Shape,
- base: Option[String],
- s: Shape,
- traversal: ModelTraversalRegistry,
- criteria: RegisterCriteria = DefaultRegisterCriteria()): RecursiveShape = {
- val recursion = buildRecursion(base, s)
- recursionError(root, recursion, traversal: ModelTraversalRegistry, Some(root.id), criteria)
+ def allowedInTraversal(traversal: ShapeTraversalRegistry,
+ r: RecursiveShape,
+ checkId: Option[String] = None): Boolean = {
+ val recursiveShapeIsAllowListed = traversal.isAllowListed(r.id)
+ val fixpointIsAllowListed = r.fixpoint.option().exists(traversal.isAllowListed)
+ /***
+ * TODO (Refactor needed)
+ * When calling ShapeExpander `checkId` some times gets set to the root shape ID from where the traversal started.
+ * Why do we need to opiotnally check if this root id is allow listed? Doesn't it suffice with checking the
+ * recursive shape ID or its fixpoint?
+ */
+ val checkIdIsAllowListed = checkId.exists(traversal.isAllowListed)
+ recursiveShapeIsAllowListed || fixpointIsAllowListed || checkIdIsAllowListed
  }
 
- def recursionError(original: Shape,
- r: RecursiveShape,
- traversal: ModelTraversalRegistry,
- checkId: Option[String] = None,
- criteria: RegisterCriteria = DefaultRegisterCriteria()): RecursiveShape = {
+ def checkRecursionError(root: Shape,
+  r: RecursiveShape,
+  traversal: ShapeTraversalRegistry,
+  checkId: Option[String] = None,
+  criteria: ThrowRecursionValidationCriteria = DefaultCriteria()): RecursiveShape = {
 
  val hasNotRegisteredItYet = !errorRegister.contains(r.id)
- if (criteria.decide(r) && !traversal.avoidError(r, checkId) && hasNotRegisteredItYet) {
+ if (criteria.shouldThrowFor(r) && !allowedInTraversal(traversal, r, checkId) && hasNotRegisteredItYet) {
  errorHandler.violation(
  RecursiveShapeSpecification,
- original.id,
+ root.id,
  None,
  "Error recursive shape",
- original.position(),
- original.location()
+ root.position(),
+ root.location()
  )
  errorRegister += r.id
- } else if (traversal.avoidError(r, checkId)) r.withSupportsRecursion(true)
+ } else if (allowedInTraversal(traversal, r, checkId)) r.withSupportsRecursion(true)
  r
  }
 }
 
-trait RegisterCriteria {
- def decide(r: RecursiveShape): Boolean
+trait ThrowRecursionValidationCriteria {
+ def shouldThrowFor(r: RecursiveShape): Boolean
 }
 
-case class DefaultRegisterCriteria() extends RegisterCriteria {
- override def decide(r: RecursiveShape): Boolean = !r.supportsRecursion.option().getOrElse(false)
+case class DefaultCriteria() extends ThrowRecursionValidationCriteria {
+ override def shouldThrowFor(r: RecursiveShape): Boolean = !r.supportsRecursion.option().getOrElse(false)
 }
 
-case class LinkableRegisterCriteria(root: Shape, linkable: Shape) extends RegisterCriteria {
- override def decide(r: RecursiveShape): Boolean = linkable.linkTarget match {
+case class LinkableCriteria(root: Shape, linkable: Shape) extends ThrowRecursionValidationCriteria {
+ override def shouldThrowFor(r: RecursiveShape): Boolean = linkable.linkTarget match {
  case Some(element) => element.id.equals(root.id)
  case None => false
  }

amf-shapes/shared/src/main/scala/amf/shapes/internal/domain/resolution/shape_normalization/ShapeExpander.scala

@@ -2,27 +2,15 @@ package amf.shapes.internal.domain.resolution.shape_normalization
 
 import amf.core.client.scala.model.domain._
 import amf.core.client.scala.model.domain.extensions.PropertyShape
-import amf.core.client.scala.traversal.ModelTraversalRegistry
+import amf.core.client.scala.traversal.ShapeTraversalRegistry
 import amf.core.internal.annotations.ExplicitField
 import amf.core.internal.metamodel.domain.ShapeModel
 import amf.core.internal.metamodel.domain.extensions.PropertyShapeModel
 import amf.core.internal.parser.domain.Annotations
 import amf.core.internal.validation.CoreValidations.TransformationValidation
+import amf.shapes.client.scala.model.domain._
 import amf.shapes.internal.domain.metamodel._
-import amf.shapes.internal.domain.resolution.recursion.{LinkableRegisterCriteria, RecursionErrorRegister}
-import amf.shapes.client.scala.model.domain.UnresolvedShape
-import amf.shapes.client.scala.model.domain.{
- AnyShape,
- ArrayShape,
- FileShape,
- MatrixShape,
- NilShape,
- NodeShape,
- ScalarShape,
- TupleShape,
- UnionShape,
- UnresolvedShape
-}
+import amf.shapes.internal.domain.resolution.recursion.{LinkableCriteria, RecursionErrorRegister}
 
 private[resolution] object ShapeExpander {
  def apply(s: Shape, context: NormalizationContext, recursionRegister: RecursionErrorRegister): Shape =
@@ -35,8 +23,8 @@ sealed case class ShapeExpander(root: Shape, recursionRegister: RecursionErrorRe
 
  def normalize(): Shape = normalize(root)
 
- protected val traversal: ModelTraversalRegistry =
- ModelTraversalRegistry().withAllowedCyclesInstances(Seq(classOf[UnresolvedShape]))
+ protected val traversal: ShapeTraversalRegistry =
+ ShapeTraversalRegistry().withAllowedCyclesInstances(Seq(classOf[UnresolvedShape]))
 
  protected def ensureHasId(shape: Shape): Unit = {
  if (Option(shape.id).isEmpty) {
@@ -54,14 +42,25 @@ sealed case class ShapeExpander(root: Shape, recursionRegister: RecursionErrorRe
  override def normalizeAction(shape: Shape): Shape = {
  shape match {
  case l: Linkable if l.isLink =>
- recursionRegister.recursionAndError(root,
- Some(root.id),
- shape,
- traversal,
- LinkableRegisterCriteria(root, shape))
-
- case _ if traversal.shouldFailIfRecursive(root, shape) && !shape.isInstanceOf[RecursiveShape] =>
- recursionRegister.recursionAndError(root, None, shape, traversal)
+ /***
+ * TODO: (Refactor needed)
+ * Why do we create a recursive shape when we find a linkable? Shouldn't this be subject only to traversals?
+ * The motivation is not explicit in the code. There is for sure some corner case where this case is needed.
+ * After finding the cocrete case please extract this to a function and make explicit the conditions where
+ * this is needed, otherwise delete this code.
+ */
+ val recursiveShape = recursionRegister.buildRecursion(Some(root.id), shape)
+ recursionRegister.checkRecursionError(root,
+ recursiveShape,
+ traversal,
+ Some(root.id),
+ LinkableCriteria(root, shape))
+ recursiveShape
+
+ case _ if traversal.foundRecursion(root, shape) && !shape.isInstanceOf[RecursiveShape] =>
+ val recursiveShape = recursionRegister.buildRecursion(None, shape)
+ recursionRegister.checkRecursionError(root, recursiveShape, traversal, Some(root.id))
+ recursiveShape
 
  case _ if traversal.wasVisited(shape.id) => shape
 
@@ -79,7 +78,7 @@ sealed case class ShapeExpander(root: Shape, recursionRegister: RecursionErrorRe
  case fileShape: FileShape => expandAny(fileShape)
  case nil: NilShape => nil
  case node: NodeShape => expandNode(node)
- case recursive: RecursiveShape => recursionRegister.recursionError(recursive, recursive, traversal)
+ case recursive: RecursiveShape => recursionRegister.checkRecursionError(recursive, recursive, traversal)
  case any: AnyShape => expandAny(any)
  }
  })
@@ -92,7 +91,7 @@ sealed case class ShapeExpander(root: Shape, recursionRegister: RecursionErrorRe
  // in this case i use the father shape id and position, because the inheritance could be a recursive shape already
  val newInherits = shape.inherits.map {
  case r: RecursiveShape if r.fixpoint.option().exists(_.equals(shape.id)) =>
- recursionRegister.recursionError(shape, r, traversal) // direct recursion
+ recursionRegister.checkRecursionError(shape, r, traversal) // direct recursion
  case r: RecursiveShape =>
  r
  case parent =>
@@ -152,7 +151,7 @@ sealed case class ShapeExpander(root: Shape, recursionRegister: RecursionErrorRe
  if (mandatory)
  array.inherits.collect({ case arr: ArrayShape if arr.items.isInstanceOf[RecursiveShape] => arr }).foreach { f =>
  val r = f.items.asInstanceOf[RecursiveShape]
- recursionRegister.recursionError(array, r, traversal, Some(array.id))
+ recursionRegister.checkRecursionError(array, r, traversal, Some(array.id))
  }
  if (Option(oldItems).isDefined) {
  val newItems = if (mandatory) {
@@ -250,17 +249,17 @@ sealed case class ShapeExpander(root: Shape, recursionRegister: RecursionErrorRe
 
  private def traverseOptionalShapeFacet(shape: Shape, from: Shape) = shape match {
  case _ if shape.inherits.nonEmpty =>
- traversal.runWithIgnoredIds(() => normalize(shape), shape.inherits.map(_.id).toSet + root.id)
+ traversal.allow(shape.inherits.map(_.id).toSet + root.id)(() => normalize(shape))
  case _: RecursiveShape => shape
- case _ => traversal.recursionAllowed(() => normalize(shape), from.id)
+ case _ => traversal.allow(traversal.currentPath + from.id)(() => normalize(shape))
  }
 
  protected def expandUnion(union: UnionShape): Shape = {
  expandInherits(union)
  val oldAnyOf = union.fields.getValue(UnionShapeModel.AnyOf)
  if (Option(oldAnyOf).isDefined) {
  val newAnyOf = union.anyOf.map { u =>
- val unionMember = traversal.recursionAllowed(() => recursiveNormalization(u), u.id)
+ val unionMember = traversal.allow(traversal.currentPath + u.id)(() => recursiveNormalization(u))
  unionMember
  }
  union.setArrayWithoutId(UnionShapeModel.AnyOf, newAnyOf, oldAnyOf.annotations)