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smithy4s.codegen.internals.SmithyToIR.scala Maven / Gradle / Ivy
/*
* Copyright 2021-2024 Disney Streaming
*
* Licensed under the Tomorrow Open Source Technology License, Version 1.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://disneystreaming.github.io/TOST-1.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package smithy4s.codegen.internals
import cats.data.NonEmptyList
import cats.implicits._
import smithy4s.meta.AdtMemberTrait
import smithy4s.meta.ErrorMessageTrait
import smithy4s.meta.IndexedSeqTrait
import smithy4s.meta.NoStackTraceTrait
import smithy4s.meta.PackedInputsTrait
import smithy4s.meta.RefinementTrait
import smithy4s.meta.VectorTrait
import smithy4s.meta.AdtTrait
import smithy4s.meta.GenerateServiceProductTrait
import smithy4s.meta.GenerateOpticsTrait
import alloy.StructurePatternTrait
import software.amazon.smithy.aws.traits.ServiceTrait
import software.amazon.smithy.model.Model
import software.amazon.smithy.model.node._
import software.amazon.smithy.model.selector.PathFinder
import software.amazon.smithy.model.shapes._
import software.amazon.smithy.model.traits.DefaultTrait
import software.amazon.smithy.model.traits.{RequiredTrait, TimestampFormatTrait}
import software.amazon.smithy.model.traits._
import scala.annotation.nowarn
import scala.jdk.CollectionConverters._
import Type.Alias
import smithy4s.meta.TypeclassTrait
private[codegen] object SmithyToIR {
def apply(model: Model, namespace: String): CompilationUnit = {
val smithyToIR = new SmithyToIR(model, namespace)
PostProcessor(
CompilationUnit(namespace, smithyToIR.allDecls, smithyToIR.rendererConfig)
)
}
private[codegen] def prettifyName(
maybeSdkId: Option[String],
shapeName: String
): String = {
maybeSdkId
.map(_.replaceAll("\\s+", ""))
.getOrElse(shapeName)
}
}
private[codegen] class SmithyToIR(model: Model, namespace: String) {
val finder = PathFinder.create(model)
val allShapes =
model
.shapes()
.iterator()
.asScala
.toList
val rendererConfig = Renderer.Config.load(model.getMetadata().asScala.toMap)
private sealed trait DefaultRenderMode
private object DefaultRenderMode {
case object Full extends DefaultRenderMode
case object OptionOnly extends DefaultRenderMode
case object NoDefaults extends DefaultRenderMode
def fromString(str: String): Option[DefaultRenderMode] = str match {
case "FULL" => Some(Full)
case "OPTION_ONLY" => Some(OptionOnly)
case "NONE" => Some(NoDefaults)
case _ => None
}
}
private val defaultRenderMode =
model
.getMetadata()
.asScala
.get("smithy4sDefaultRenderMode")
.flatMap(_.asStringNode().asScala)
.flatMap(f => DefaultRenderMode.fromString(f.getValue))
.getOrElse(DefaultRenderMode.Full)
private def fieldModifier(member: MemberShape): Field.Modifier = {
val hasRequired = member.hasTrait(classOf[RequiredTrait])
val defaultNode =
member.getTrait(classOf[DefaultTrait]).asScala.map(_.toNode)
val defaultTypedNode = defaultRenderMode match {
case DefaultRenderMode.Full => maybeDefault(member).map(_.typedNode)
case DefaultRenderMode.OptionOnly => None
case DefaultRenderMode.NoDefaults => None
}
(hasRequired, defaultNode) match {
case (false, None) => Field.Modifier.NoModifier
case (true, None) => Field.Modifier.RequiredMod
case (false, Some(node)) =>
Field.Modifier.DefaultMod(node, defaultTypedNode)
case (true, Some(node)) =>
Field.Modifier.RequiredDefaultMod(node, defaultTypedNode)
}
}
def allDecls = allShapes
.filter(_.getId().getNamespace() == namespace)
.flatMap(_.accept(toIRVisitor(renderAdtMemberStructures = false)))
.toList
def toIRVisitor(
renderAdtMemberStructures: Boolean
): ShapeVisitor.Default[Option[Decl]] =
new ShapeVisitor.Default[Option[Decl]] {
override protected def getDefault(shape: Shape): Option[Decl] = {
val hints = SmithyToIR.this.hints(shape)
val recursive = hints.exists {
case Hint.Trait => true
case _ => false
}
shape.tpe.flatMap {
case Type.Alias(_, name, tpe: Type.ExternalType, isUnwrapped) =>
val newHints = hints.filterNot(_ == tpe.refinementHint)
TypeAlias(
shape.getId(),
name,
tpe,
isUnwrapped,
recursive,
newHints
).some
case Type.Alias(_, name, tpe, isUnwrapped) =>
TypeAlias(
shape.getId(),
name,
tpe,
isUnwrapped,
recursive,
hints
).some
case Type.PrimitiveType(_) => None
case other =>
TypeAlias(
shape.getId(),
shape.name,
other,
isUnwrapped = false,
recursive,
hints
).some
}
}
override def memberShape(x: MemberShape): Option[Decl] = None
private def doFieldsMatch(
mixinId: ShapeId,
fields: List[Field]
): Boolean = {
val mixin: StructureShape =
model
.getShape(mixinId)
.asScala
.flatMap(_.asStructureShape.asScala)
.getOrElse(
throw new IllegalArgumentException(
s"Unable to find mixin with id: $mixinId"
)
)
val mixinMembers = mixin.getAllMembers().asScala
mixinMembers.forall { case (memberName, member) =>
fields
.find(_.name == memberName)
.forall { field =>
field.modifier == fieldModifier(member)
}
}
}
override def structureShape(shape: StructureShape): Option[Decl] = {
val hints = SmithyToIR.this.hints(shape)
val isTrait = hints.exists {
case Hint.Trait => true
case _ => false
}
val rec = isRecursive(shape.getId()) || isTrait
val fields = shape.fields
val filteredMixins = shape
.getMixins()
.asScala
.filter(mixinId => doFieldsMatch(mixinId, fields))
val mixins = filterMixinsExistOnParentAdt(filteredMixins.toSet, shape)
.flatMap(_.tpe)
.toList
val isMixin = shape.hasTrait(classOf[MixinTrait])
val p =
Product(
shapeId = shape.getId(),
name = shape.name,
fields = fields,
mixins = mixins,
recursive = rec,
hints = hints,
isMixin = isMixin
).some
if (isPartOfAdt(shape)) {
if (renderAdtMemberStructures) p else None
} else p
}
private def getMixins(shape: UnionShape): List[Type] = {
getMixinShapeIds(shape).flatMap(_.tpe)
}
private def getMixinShapeIds(shape: UnionShape): List[ShapeId] = {
val memberTargets = shape
.members()
.asScala
.toList
.map(mem => model.expectShape(mem.getTarget))
val mixins = memberTargets
.map(_.getMixins.asScala.toSet)
val union = mixins.foldLeft(Set.empty[ShapeId])(_ union _)
val result = mixins.foldLeft(union)(_ intersect _)
result.toList
}
// Filters out any mixins which exist on the parent ADT (if it is part of an ADT)
// This is so the case classes in the ADT won't also extend the same mixins
// as the parent sealed trait. This leads to cleaner generated code (no redundancy).
private def filterMixinsExistOnParentAdt(
mixinIds: Set[ShapeId],
shape: StructureShape
): Set[ShapeId] = {
getAdtParent(shape) match {
case None => mixinIds
case Some(parentId) =>
model.expectShape(parentId).asUnionShape.asScala match {
case None => mixinIds
case Some(union) =>
val unionMixins = getMixinShapeIds(union)
mixinIds.filter(!unionMixins.contains(_))
}
}
}
override def unionShape(shape: UnionShape): Option[Decl] = {
val rec = isRecursive(shape.getId())
val mixins =
if (shape.hasTrait(classOf[AdtTrait])) getMixins(shape)
else List.empty
val hints = SmithyToIR.this.hints(shape)
val isTrait = hints.exists {
case Hint.Trait => true
case _ => false
}
NonEmptyList.fromList(shape.alts).map { case alts =>
Union(shape.getId(), shape.name, alts, mixins, rec || isTrait, hints)
}
}
override def stringShape(shape: StringShape): Option[Decl] =
(shape match {
case T.enumeration(e) => {
val pseudoEnumShape =
EnumShape.fromStringShape(shape, true).asScala match {
case Some(shape) =>
shape
.toBuilder()
.asInstanceOf[EnumShape.Builder]
.build()
case None => {
val namedEnumTrait = {
val defs = e.getValues().asScala.zipWithIndex.map {
case (enumDef, idx) =>
enumDef.getName().asScala match {
case Some(_) => enumDef
case None =>
enumDef
.toBuilder()
.name(
EnumUtil
.enumValueClassName(
None,
enumDef.getValue,
idx
)
)
.build()
}
}
val builder = e.toBuilder().clearEnums()
defs.foreach(builder.addEnum)
builder.build()
}
EnumShape
.builder()
.id(shape.getId())
.source(shape.getSourceLocation())
.addTraits(
shape
.getAllTraits()
.values()
.asScala
.filterNot(
_.toShapeId() == ShapeId.from("smithy.api#enum")
)
.asJavaCollection
)
.asInstanceOf[EnumShape.Builder]
.setMembersFromEnumTrait(namedEnumTrait)
.build()
}
}
enumShape(pseudoEnumShape)
}
case _ => this.getDefault(shape)
})
override def enumShape(shape: EnumShape): Option[Decl] = {
val values = shape
.getEnumValues()
.asScala
.zipWithIndex
.map { case ((name, value), index) =>
val member = shape.getMember(name).get()
EnumValue(
value = value,
intValue = index,
name = name,
realName = name,
hints = hints(member)
)
}
.toList
val isOpen = shape.hasTrait(classOf[alloy.OpenEnumTrait])
val openEnumHint = if (isOpen) List(Hint.OpenEnum) else List.empty
Enumeration(
shape.getId(),
shape.name,
if (isOpen) EnumTag.OpenStringEnum else EnumTag.StringEnum,
values,
hints = hints(shape) ++ openEnumHint
).some
}
override def intEnumShape(shape: IntEnumShape): Option[Decl] = {
val values = shape
.getEnumValues()
.asScala
.map { case (name, value) =>
val member = shape.getMember(name).get()
EnumValue(
value = name,
intValue = value,
name = name,
realName = name,
hints = hints(member)
)
}
.toList
val isOpen = shape.hasTrait(classOf[alloy.OpenEnumTrait])
val openEnumHint = if (isOpen) List(Hint.OpenEnum) else List.empty
Enumeration(
shape.getId(),
shape.name,
if (isOpen) EnumTag.OpenIntEnum else EnumTag.IntEnum,
values,
hints(shape) ++ openEnumHint
).some
}
override def serviceShape(shape: ServiceShape): Option[Decl] = {
val generalErrors: List[Type] =
shape
.getErrors()
.asScala
.toList
.map(_.tpe)
.collect { case Some(tpe) => tpe }
// Aggregates both the operations of the current entity and the ones
// in the sub-entities.
def recursiveOperations(
entity: EntityShape
): List[ShapeId] = {
entity
.getAllOperations()
.asScala
.toList ++ entity.getResources().asScala.flatMap { shapeId =>
recursiveOperations(
model.expectShape(shapeId, classOf[EntityShape])
)
}
}
val operations = recursiveOperations(shape)
.map(model.getShape(_).asScala)
.collect { case Some(S.Operation(op)) =>
val inputType =
op.getInputShape().tpe.getOrElse(Type.unit)
val params =
op.getInputShape()
.shape
.toList
.flatMap(_.fields)
def streamedMember(shapeId: ShapeId) =
shapeId.shape
.map(_.members().asScala.toList)
.flatMap(_.collectFirstSome(streamingField))
val streamedInput = streamedMember(op.getInputShape())
val streamedOutput = streamedMember(op.getOutputShape())
val errorTypes = (generalErrors ++ op
.getErrors()
.asScala
.map(_.tpe)
.collect { case Some(errorType) =>
errorType
}
.toList).distinct
val outputType =
op.getOutputShape().tpe.getOrElse(Type.unit)
Operation(
op.getId(),
op.name,
uncapitalise(op.name),
params,
inputType,
errorTypes,
outputType,
streamedInput,
streamedOutput,
hints(op)
)
}
val serviceHints = hints(shape)
val maybeSdkId =
shape
.getTrait(classOf[ServiceTrait])
.asScala
.flatMap(st => Option(st.getSdkId()))
.filterNot(_.isEmpty)
val prettyName = SmithyToIR.prettifyName(maybeSdkId, shape.name)
Service(
shape.getId(),
prettyName,
operations,
serviceHints,
shape.getVersion()
).some
}
}
private def isRecursive(id: ShapeId): Boolean = {
// A shape is recursive if there is a relationship from itself to itself.
val shape = model.expectShape(id)
val paths = finder.search(shape, List(shape).asJava)
!paths.isEmpty()
}
private val toType: ShapeVisitor[Option[Type]] =
new ShapeVisitor[Option[Type]] {
// See https://awslabs.github.io/smithy/1.0/spec/core/prelude-model.html?highlight=primitiveboolean#prelude-shapes
val primitiveAliases = List(
"PrimitiveBoolean",
"PrimitiveByte",
"PrimitiveInteger",
"PrimitiveLong",
"PrimitiveFloat",
"PrimitiveDouble"
)
val smithyNamespace = "smithy.api"
private def isUnboxedPrimitive(shapeId: ShapeId): Boolean =
shapeId.getNamespace() == smithyNamespace && primitiveAliases.contains(
shapeId.getName()
)
private sealed trait ExternalTypeInfo
private object ExternalTypeInfo {
case class RefinementInfo(trt: RefinementTrait) extends ExternalTypeInfo
case class StructurePatternInfo(trt: StructurePatternTrait)
extends ExternalTypeInfo
}
private def getExternalTypeInfo(
shape: Shape
): Option[(Trait, ExternalTypeInfo)] = {
shape
.getAllTraits()
.asScala
.flatMap { case (_, trt) =>
val refinement = model
.getShape(trt.toShapeId)
.asScala
.flatMap(_.getTrait(classOf[RefinementTrait]).asScala)
.map(rt => trt -> ExternalTypeInfo.RefinementInfo(rt))
def idRef =
if (trt.toShapeId == IdRefTrait.ID) {
val rt = RefinementTrait
.builder()
.targetType("smithy4s.ShapeId")
.build()
Some(trt -> ExternalTypeInfo.RefinementInfo(rt))
} else None
refinement.orElse(idRef)
}
.headOption // Shapes can have at most ONE trait that has the refined trait
.orElse {
shape.getTrait(classOf[StructurePatternTrait]).asScala.map { trt =>
trt -> ExternalTypeInfo.StructurePatternInfo(trt)
}
}
}
private def getExternalOrBase(shape: Shape, base: Type): Type =
getExternalTypeInfo(shape)
.map {
case (trt, ExternalTypeInfo.RefinementInfo(refined)) =>
val baseTypeParams = base match {
case c: Type.Collection => List(c.member)
case m: Type.Map => List(m.key, m.value)
case other => List(other)
}
Type.ExternalType(
shape.name,
refined.getTargetType(),
if (refined.isParameterised) baseTypeParams else List.empty,
refined.getProviderImport().asScala,
base,
unfoldTrait(trt)
)
case (trt, ExternalTypeInfo.StructurePatternInfo(pattern)) =>
Type.ExternalType(
shape.name,
s"${pattern.getTarget.namespace}.${pattern.getTarget.name}",
List.empty,
Some("smithy4s.internals.StructurePatternRefinementProvider._"),
base,
unfoldTrait(trt)
)
}
.getOrElse(base)
private def isExternal(tpe: Type): Boolean = tpe match {
case _: Type.ExternalType => true
case _ => false
}
private def isUnwrappedShape(shape: Shape): Boolean = {
shape.hasTrait(classOf[smithy4s.meta.UnwrapTrait])
}
def primitive(
shape: Shape,
primitiveId: String,
primitive: Primitive
): Option[Type] = {
val externalOrBase =
getExternalOrBase(shape, Type.PrimitiveType(primitive))
if (
shape.getId() != ShapeId.from(primitiveId) &&
!isUnboxedPrimitive(shape.getId())
) {
Type
.Alias(
shape.getId().getNamespace(),
shape.getId().getName(),
externalOrBase,
isUnwrappedShape(shape)
)
.some
} else externalOrBase.some
}
def blobShape(x: BlobShape): Option[Type] =
if (x.getTrait(classOf[StreamingTrait]).isPresent()) {
Type
.Alias(
x.getId().getNamespace(),
x.getId().getName,
Type.PrimitiveType(Primitive.Byte),
isUnwrappedShape(x)
)
.some
} else {
primitive(x, "smithy.api#Blob", Primitive.Blob)
}
def booleanShape(x: BooleanShape): Option[Type] =
primitive(x, "smithy.api#Boolean", Primitive.Bool)
def getHints(tpe: Type, shape: Shape): List[Hint] = {
val h = hints(shape)
tpe match {
case e: Type.ExternalType => h.filterNot(_ == e.refinementHint)
case _ => h
}
}
def listShape(x: ListShape): Option[Type] = {
x.getMember()
.accept(this)
.map { tpe =>
if (x.hasTrait(classOf[SparseTrait])) {
Type.Nullable(tpe)
} else tpe
}
.map { tpe =>
val _hints = hints(x)
val memberHints = {
val h = hints(x.getMember())
tpe match {
case e: Type.ExternalType => h.filterNot(_ == e.refinementHint)
case _ => h
}
}
if (_hints.contains(Hint.UniqueItems)) {
Type.Collection(CollectionType.Set, tpe, memberHints)
} else if (_hints.contains(Hint.SpecializedList.Vector)) {
Type.Collection(CollectionType.Vector, tpe, memberHints)
} else if (_hints.contains(Hint.SpecializedList.IndexedSeq)) {
Type.Collection(CollectionType.IndexedSeq, tpe, memberHints)
} else {
Type.Collection(CollectionType.List, tpe, memberHints)
}
}
.map { tpe =>
val externalOrBase =
getExternalOrBase(x, tpe)
val isUnwrapped = !isExternal(externalOrBase) || isUnwrappedShape(x)
Type.Alias(x.namespace, x.name, externalOrBase, isUnwrapped)
}
}
@nowarn("msg=class SetShape in package shapes is deprecated")
override def setShape(x: SetShape): Option[Type] = {
x.getMember()
.accept(this)
.map(mem =>
Type
.Collection(CollectionType.Set, mem, getHints(mem, x.getMember()))
)
.map { tpe =>
val externalOrBase =
getExternalOrBase(x, tpe)
val isUnwrapped = !isExternal(externalOrBase) || isUnwrappedShape(x)
Type.Alias(
x.namespace,
x.name,
externalOrBase,
isUnwrapped
)
}
}
def mapShape(x: MapShape): Option[Type] = (for {
k <- x.getKey().accept(this)
v <- x.getValue().accept(this).map { tpe =>
if (x.hasTrait(classOf[SparseTrait])) Type.Nullable(tpe) else tpe
}
} yield Type.Map(
k,
getHints(k, x.getKey()),
v,
getHints(v, x.getValue())
)).map { tpe =>
val externalOrBase =
getExternalOrBase(x, tpe)
val isUnwrapped = !isExternal(externalOrBase) || isUnwrappedShape(x)
Type.Alias(x.namespace, x.name, externalOrBase, isUnwrapped)
}
def byteShape(x: ByteShape): Option[Type] =
primitive(x, "smithy.api#Byte", Primitive.Byte)
def shortShape(x: ShortShape): Option[Type] =
primitive(x, "smithy.api#Short", Primitive.Short)
def integerShape(x: IntegerShape): Option[Type] =
primitive(x, "smithy.api#Integer", Primitive.Int)
def longShape(x: LongShape): Option[Type] =
primitive(x, "smithy.api#Long", Primitive.Long)
def floatShape(x: FloatShape): Option[Type] = {
primitive(x, "smithy.api#Float", Primitive.Float)
}
def documentShape(x: DocumentShape): Option[Type] =
primitive(x, "smithy.api#Document", Primitive.Document)
def doubleShape(x: DoubleShape): Option[Type] =
primitive(x, "smithy.api#Double", Primitive.Double)
def bigIntegerShape(x: BigIntegerShape): Option[Type] =
primitive(x, "smithy.api#BigInteger", Primitive.BigInteger)
def bigDecimalShape(x: BigDecimalShape): Option[Type] =
primitive(x, "smithy.api#BigDecimal", Primitive.BigDecimal)
def operationShape(x: OperationShape): Option[Type] = None
def resourceShape(x: ResourceShape): Option[Type] = None
def serviceShape(x: ServiceShape): Option[Type] = None
override def enumShape(x: EnumShape): Option[Type] =
Type.Ref(x.namespace, x.name).some
override def intEnumShape(x: IntEnumShape): Option[Type] =
Type.Ref(x.namespace, x.name).some
def stringShape(x: StringShape): Option[Type] = x match {
case T.enumeration(_) => Type.Ref(x.namespace, x.name).some
case shape if shape.getId() == uuidShapeId =>
Type.PrimitiveType(Primitive.Uuid).some
case T.uuidFormat(_) =>
Type
.Alias(
x.namespace,
x.name,
Type.PrimitiveType(Primitive.Uuid),
isUnwrapped = false
)
.some
case _ =>
primitive(x, "smithy.api#String", Primitive.String)
}
def structureShape(x: StructureShape): Option[Type] =
if (x.getId() == ShapeId.fromParts("smithy.api", "Unit"))
Some(Type.unit)
else Type.Ref(x.namespace, x.name).some
def unionShape(x: UnionShape): Option[Type] =
Type.Ref(x.namespace, x.name).some
def memberShape(x: MemberShape): Option[Type] =
model.getShape(x.getTarget()).asScala.flatMap { shape =>
val builder =
(Shape.shapeToBuilder(shape: Shape): AbstractShapeBuilder[_, _])
builder
.addTraits(x.getAllTraits().asScala.map(_._2).asJavaCollection)
builder
.build()
.accept(this)
}
def timestampShape(x: TimestampShape): Option[Type] =
primitive(x, "smithy.api#Timestamp", Primitive.Timestamp)
}
private def imputeZeroValuesOnDefaultTraits(
shape: Shape
): List[Trait] = shape.getAllTraits().asScala.values.toList.map {
case default: DefaultTrait if default.toNode == Node.nullNode =>
val tpe = shape.asMemberShape().asScala match {
case Some(memShape) => model.getShape(memShape.getTarget).get.getType
case None => shape.getType
}
val newNode = tpe match {
case ShapeType.STRING => Node.from("")
case ShapeType.MAP => Node.objectNode()
case ShapeType.LIST => Node.arrayNode()
case ShapeType.INTEGER => Node.from(0)
case ShapeType.BIG_DECIMAL => Node.from(0)
case ShapeType.BIG_INTEGER => Node.from(0)
case ShapeType.LONG => Node.from(0L)
case ShapeType.DOUBLE => Node.from(0.0d)
case ShapeType.SHORT => Node.from(0: Short)
case ShapeType.FLOAT => Node.from(0.0f)
case ShapeType.BOOLEAN => Node.from(false)
case ShapeType.BLOB => Node.arrayNode()
case ShapeType.BYTE => Node.from(0)
case ShapeType.TIMESTAMP =>
shape
.getTrait(classOf[TimestampFormatTrait])
.asScala
.map(_.getValue) match {
case Some(TimestampFormatTrait.DATE_TIME) =>
Node.from("1970-01-01T00:00:00.00Z")
case Some(TimestampFormatTrait.HTTP_DATE) =>
Node.from("Thu, 01 Jan 1970 00:00:00 GMT")
case _ => Node.from(0)
}
case _ => default.toNode
}
new DefaultTrait(newNode)
case other => other
}
def toTypeRef(id: ToShapeId): Type.Ref = {
val shapeId = id.toShapeId()
Type.Ref(shapeId.getNamespace(), shapeId.getName())
}
object ConstraintTrait {
def unapply(tr: Trait): Option[Trait] =
tr match {
case t: RangeTrait => Some(t)
case t: LengthTrait => Some(t)
case t: PatternTrait => Some(t)
case _ => None
}
}
// Captures the data representing the default value of a member shape.
private def maybeDefault(shape: MemberShape): Option[Hint.Default] = {
val maybeTrait = shape.getTrait(classOf[DefaultTrait])
if (maybeTrait.isPresent()) {
val tr = maybeTrait.get()
// We're short-circuiting when encountering any external type,
// as we do not have the means to instantiate them in a safe manner.
def unfoldNodeAndTypeIfNotExternal(nodeAndType: NodeAndType) = {
nodeAndType.tpe match {
case _: Type.ExternalType => None
case _ => Some(unfoldNodeAndType(nodeAndType))
}
}
val node = tr.toNode()
val targetTpe = shape.getTarget.tpe.get
// Constructing the initial value for the refold
val nodeAndType = targetTpe match {
case Alias(_, _, tpe, true) => NodeAndType(node, tpe)
case _ => NodeAndType(node, targetTpe)
}
val maybeTree =
recursion.anaM(unfoldNodeAndTypeIfNotExternal)(nodeAndType)
maybeTree.map(Hint.Default(_))
} else {
None
}
}
def maybeTypeclassesHint(shape: Shape): List[Hint.Typeclass] = {
shape
.getAllTraits()
.asScala
.flatMap { case (_, trt) =>
model
.getShape(trt.toShapeId)
.asScala
.flatMap(_.getTrait(classOf[TypeclassTrait]).asScala)
.map(trt -> _)
}
.map { case (typeclassName, typeclassInfo) =>
Hint.Typeclass(
typeclassName.toShapeId,
typeclassInfo.getTargetType,
typeclassInfo.getInterpreter
)
}
.toList
}
@annotation.nowarn(
"msg=class UniqueItemsTrait in package traits is deprecated"
)
private def traitToHint(shape: Shape): PartialFunction[Trait, Hint] = {
case _: ErrorTrait => Hint.Error
case t: ProtocolDefinitionTrait =>
val shapeIds = t.getTraits()
val refs = shapeIds.asScala.map(shapeId =>
Type.Ref(shapeId.getNamespace(), shapeId.getName())
)
Hint.Protocol(refs.toList)
case _: PackedInputsTrait =>
Hint.PackedInputs
case d: DeprecatedTrait =>
Hint.Deprecated(d.getMessage.asScala, d.getSince.asScala)
case _: ErrorMessageTrait =>
Hint.ErrorMessage
case _: NoStackTraceTrait =>
Hint.NoStackTrace
case _: VectorTrait =>
Hint.SpecializedList.Vector
case _: IndexedSeqTrait =>
Hint.SpecializedList.IndexedSeq
case _: UniqueItemsTrait =>
Hint.UniqueItems
case _: GenerateServiceProductTrait =>
Hint.GenerateServiceProduct
case _: GenerateOpticsTrait =>
Hint.GenerateOptics
case t if t.toShapeId() == ShapeId.fromParts("smithy.api", "trait") =>
Hint.Trait
case ConstraintTrait(tr) => Hint.Constraint(toTypeRef(tr), unfoldTrait(tr))
}
private def documentationHint(shape: Shape): Option[Hint] = {
def split(s: String) =
s.replace("*/", "\\*\\/").linesIterator.toList
val shapeDocs = shape
.getTrait(classOf[DocumentationTrait])
.asScala
.foldMap(doc => split(doc.getValue()))
def getMemberDocs(shape: Shape): Map[String, List[String]] =
shape match {
case _: UnionShape => Map.empty
case op: OperationShape =>
op.getInput()
.asScala
.map(id => getMemberDocs(model.expectShape(id)))
.getOrElse(Map.empty)
case _ =>
shape
.members()
.asScala
.map { member =>
val memberDocs =
member.getTrait(classOf[DocumentationTrait]).asScala
def targetDocs = model
.expectShape(member.getTarget)
.getTrait(classOf[DocumentationTrait])
.asScala
(
member.getMemberName(),
memberDocs.orElse(targetDocs)
)
}
.collect { case (name, Some(v)) => (name, split(v.getValue())) }
.toMap
}
val memberDocs = getMemberDocs(shape)
if (shapeDocs.nonEmpty || memberDocs.nonEmpty) {
Some(Hint.Documentation(shapeDocs, memberDocs))
} else None
}
private def hints(shape: Shape): List[Hint] = {
val traits = imputeZeroValuesOnDefaultTraits(shape)
val nonMetaTraits =
traits
.filterNot(_.toShapeId().getNamespace() == "smithy4s.meta")
// traits from the synthetic namespace, e.g. smithy.synthetic.enum
// don't have shapes in the model - so we can't generate hints for them.
.filterNot(_.toShapeId().getNamespace() == "smithy.synthetic")
// enumValue can be derived from enum schemas anyway, so we're removing it from hints
.filterNot(_.toShapeId() == EnumValueTrait.ID)
val nonConstraintNonMetaTraits = nonMetaTraits.collect {
case t if ConstraintTrait.unapply(t).isEmpty => t
}
traits.collect(traitToHint(shape)) ++
documentationHint(shape) ++
nonConstraintNonMetaTraits
.filterNot(_.toShapeId == RequiredTrait.ID)
.map(unfoldTrait) ++
maybeTypeclassesHint(shape)
}
case class AltInfo(name: String, tpe: Type, isAdtMember: Boolean)
implicit class ShapeExt(shape: Shape) {
def name = shape.getId().getName()
def namespace = shape.getId().getNamespace()
def tpe: Option[Type] = shape.accept(toType)
private def fieldsInternal(hintsExtractor: Shape => List[Hint]) = {
val noDefault =
if (defaultRenderMode == DefaultRenderMode.NoDefaults)
List(Hint.NoDefault)
else List.empty
val result = shape
.members()
.asScala
.filterNot(isStreaming)
.map { member =>
val default =
if (defaultRenderMode == DefaultRenderMode.Full)
maybeDefault(member).toList
else List.empty
val modifier = fieldModifier(member)
(
member.getMemberName(),
member.tpe,
modifier,
hintsExtractor(member) ++ default ++ noDefault
)
}
.collect {
case (name, Some(tpe: Type.ExternalType), modifier, hints) =>
val newHints = hints.filterNot(_ == tpe.refinementHint)
Field(name, tpe, modifier, newHints)
case (name, Some(tpe), modifier, hints) =>
Field(name, tpe, modifier, hints)
}
.toList
defaultRenderMode match {
case DefaultRenderMode.Full =>
result.sortBy {
_.modifier match {
case Field.Modifier.RequiredMod => 0
case Field.Modifier.RequiredDefaultMod(_, _) => 1
case Field.Modifier.DefaultMod(_, _) => 1
case Field.Modifier.NoModifier => 2
}
}
case DefaultRenderMode.OptionOnly =>
result.sortBy {
_.modifier match {
case Field.Modifier.RequiredMod => 0
case Field.Modifier.RequiredDefaultMod(_, _) => 0
case Field.Modifier.DefaultMod(_, _) => 0
case Field.Modifier.NoModifier => 1
}
}
case DefaultRenderMode.NoDefaults => result
}
}
/**
* Should be used when calculating schema for a structure.
*
* See https://github.com/disneystreaming/smithy4s/issues/1296 for details.
*/
def fields: List[Field] = fieldsInternal(hintsExtractor = hints)
/**
* Should be used only on the call site
* of the trait application where there is no need to call `unfoldTrait` for every hint of the trait.
*/
def getFieldsPlain: List[Field] =
fieldsInternal(hintsExtractor = _ => List.empty)
def alts = {
shape
.members()
.asScala
.map { member =>
val memberTarget =
model.expectShape(member.getTarget)
if (isPartOfAdt(memberTarget)) {
val s = memberTarget
.accept(toIRVisitor(renderAdtMemberStructures = true))
.map(Left(_))
(member.getMemberName(), s, hints(member))
} else {
(member.getMemberName(), member.tpe.map(Right(_)), hints(member))
}
}
.collect {
case (name, Some(Right(Type.unit)), h) =>
Alt(name, UnionMember.UnitCase, h)
case (name, Some(Right(tpe: Type.ExternalType)), h) =>
Alt(
name,
UnionMember.TypeCase(tpe),
h.filterNot(_ == tpe.refinementHint)
)
case (name, Some(Right(tpe)), h) =>
Alt(name, UnionMember.TypeCase(tpe), h)
case (name, Some(Left(p: Product)), h) =>
Alt(name, UnionMember.ProductCase(p), h)
}
.toList
}
def getAltTypes: List[AltInfo] = {
shape
.members()
.asScala
.map { member =>
val memberTarget =
model.expectShape(member.getTarget)
if (isPartOfAdt(memberTarget)) {
(member.getMemberName(), member.tpe.map(Left(_)))
} else {
(member.getMemberName(), member.tpe.map(Right(_)))
}
}
.collect {
case (name, Some(Left(tpe))) =>
AltInfo(name, tpe, isAdtMember = true)
case (name, Some(Right(tpe))) =>
AltInfo(name, tpe, isAdtMember = false)
}
.toList
}
}
private def isStreaming(member: MemberShape): Boolean =
member
.getTrait(classOf[StreamingTrait])
.asScala
.orElse(
member
.getTarget()
.shape
.flatMap(_.getTrait(classOf[StreamingTrait]).asScala)
)
.isDefined
private def streamingField(member: MemberShape): Option[StreamingField] = {
if (isStreaming(member)) {
member.tpe.map { tpe =>
StreamingField(member.getId().name, tpe, hints(member))
}
} else None
}
implicit class ShapeIdExt(shapeId: ShapeId) {
def name = shapeId.getName()
def namespace = shapeId.getNamespace()
def shape: Option[Shape] = model.getShape(shapeId).asScala
def tpe: Option[Type] =
model.getShape(shapeId).asScala.flatMap(_.accept(toType))
}
private case class NodeAndType(node: Node, tpe: Type)
private def isPartOfAdt(shape: Shape): Boolean = {
shape.hasTrait(classOf[AdtMemberTrait]) ||
getAdtParent(shape).isDefined
}
private def getAdtParent(shape: Shape): Option[ShapeId] = {
val result = model
.getMemberShapes()
.asScala
.toList
.filter(_.getTarget == shape.toShapeId)
.find(mem =>
model.expectShape(mem.getContainer).hasTrait(classOf[AdtTrait])
)
result.map(_.getContainer)
}
private object UnRef {
def unapply(tpe: Type): Option[Shape] = tpe match {
case Type.Ref(ns, name) =>
val maybeShape = model
.getShape(ShapeId.fromParts(ns, name))
.asScala
maybeShape.map { shape =>
val fromAdtMember = shape
.getTrait(classOf[AdtMemberTrait])
.asScala
.map(_.getValue)
val adtParent: Option[ShapeId] =
fromAdtMember orElse getAdtParent(shape)
adtParent match {
case Some(parent) =>
val cId = shape.getId
val newNs =
cId.getNamespace + "." + parent.getName
val error = new Exception(
s"Shapes annotated with the adtMemberTrait must be structures. $cId is not a structure."
)
shape.asStructureShape.asScala
// This error should never be thrown due to selector on AdtMemberTrait, but is here in case
.getOrElse(throw error)
.toBuilder
.id(ShapeId.fromParts(newNs, cId.getName))
.build()
case _ => shape
}
}
case _ => None
}
}
case class UnhandledTraitBinding(node: Node, tpe: Type) extends Throwable {
override def getMessage(): String =
s"Unhandled trait binding:\ntype: $tpe\nvalue: ${Node.printJson(node)}"
}
private def unfoldNode(node: Node, shapeId: ShapeId): Fix[TypedNode] = {
val nodeAndType = NodeAndType(node, shapeId.tpe.get)
recursion.ana(unfoldNodeAndType)(nodeAndType)
}
private def unfoldTrait(tr: Trait): Hint.Native = {
Hint.Native(unfoldNode(tr.toNode(), tr.toShapeId()))
}
private def unfoldNodeAndType(layer: NodeAndType): TypedNode[NodeAndType] =
(layer.node, layer.tpe) match {
// Struct
case (N.ObjectNode(map), UnRef(S.Structure(struct))) =>
val shapeId = struct.getId()
val ref = Type.Ref(shapeId.getNamespace(), shapeId.getName())
val structFields = struct.getFieldsPlain
val fieldNames = struct.getFieldsPlain.map(_.name)
val fields: List[TypedNode.FieldTN[NodeAndType]] = structFields.map {
case Field(_, realName, tpe, Field.Modifier.NoModifier, _) =>
map.get(realName) match {
case Some(node) =>
TypedNode.FieldTN.OptionalSomeTN(NodeAndType(node, tpe))
case None => TypedNode.FieldTN.OptionalNoneTN
}
case Field(_, realName, tpe, mod, _) =>
val node = map.get(realName).getOrElse {
mod.default.get
} // value or default must be present on required field
TypedNode.FieldTN.RequiredTN(NodeAndType(node, tpe))
}
TypedNode.StructureTN(ref, fieldNames.zip(fields))
// Union
case (N.ObjectNode(map), UnRef(S.Union(union))) =>
val shapeId = union.getId()
val ref = Type.Ref(shapeId.getNamespace(), shapeId.getName())
val (name, node) = map.head // unions are encoded as objects
val alt = union.getAltTypes.find(_.name == name).get
val a = if (alt.isAdtMember) {
val t = NodeAndType(node, alt.tpe)
TypedNode.AltValueTN.ProductAltTN(t)
} else {
val t = NodeAndType(node, alt.tpe)
TypedNode.AltValueTN.TypeAltTN(t)
}
TypedNode.AltTN(ref, name, a)
// Alias
case (node, Type.Alias(ns, name, tpe, _)) =>
TypedNode.NewTypeTN(Type.Ref(ns, name), NodeAndType(node, tpe))
// Enumeration (Enum Trait)
case (N.StringNode(str), UnRef(shape @ T.enumeration(e))) =>
val (enumDef, index) =
e.getValues().asScala.zipWithIndex.find(_._1.getValue() == str).get
val shapeId = shape.getId()
val ref = Type.Ref(shapeId.getNamespace(), shapeId.getName())
TypedNode.EnumerationTN(
ref,
enumDef.getValue(),
index,
EnumUtil.enumValueClassName(
enumDef.getName().asScala,
enumDef.getValue,
index
)
)
// Enumeration
case (N.StringNode(str), UnRef(S.Enumeration(enumeration))) =>
val ((enumName, enumValue), index) =
enumeration
.getEnumValues()
.asScala
.zipWithIndex
.find { case ((_, value), _) => value == str }
.get
val shapeId = enumeration.getId()
val ref = Type.Ref(shapeId.getNamespace(), shapeId.getName())
TypedNode.EnumerationTN(
ref,
enumValue,
index,
enumName
)
// Integer enumeration
case (N.NumberNode(num), UnRef(S.IntEnumeration(enumeration))) =>
val (enumName, enumValue) =
enumeration
.getEnumValues()
.asScala
.find { case (_, value) => value == num.intValue }
.get
val shapeId = enumeration.getId()
val ref = Type.Ref(shapeId.getNamespace(), shapeId.getName())
TypedNode.EnumerationTN(
ref,
enumName,
enumValue,
enumName
)
// List
case (
N.ArrayNode(list),
Type.Collection(collectionType, mem, _)
) =>
TypedNode.CollectionTN(collectionType, list.map(NodeAndType(_, mem)))
// Map
case (N.MapNode(map), Type.Map(keyType, _, valueType, _)) =>
TypedNode.MapTN(map.map { case (k, v) =>
(NodeAndType(k, keyType) -> NodeAndType(v, valueType))
})
// Primitive
case (node, Type.PrimitiveType(p)) =>
unfoldNodeAndTypeP(node, p)
case (node, Type.Collection(collectionType, _, _))
if node == Node.nullNode =>
TypedNode.CollectionTN(collectionType, List.empty)
case (node, Type.Map(_, _, _, _)) if node == Node.nullNode =>
TypedNode.MapTN(List.empty)
case (node, IdRefCase()) =>
val ref = Type.Ref("smithy4s", "ShapeId")
val namespace :: name :: _ =
node.asStringNode.get.getValue.split("#").toList
def toField(value: String) = TypedNode.FieldTN.RequiredTN(
NodeAndType(
Node.from(value),
Type.PrimitiveType(Primitive.String)
)
)
TypedNode.StructureTN(
ref,
List("namespace" -> toField(namespace), "name" -> toField(name))
)
case (node, tpe) => throw UnhandledTraitBinding(node, tpe)
}
private object IdRefCase {
def unapply(tpe: Type): Boolean = tpe match {
case Type.ExternalType(
_,
fqn,
_,
_,
Type.PrimitiveType(Primitive.String),
_
) if fqn === "smithy4s.ShapeId" =>
true
case _ => false
}
}
private def unfoldNodeAndTypeP(
node: Node,
p: Primitive
): TypedNode[NodeAndType] = (node, p) match {
// String
case (N.StringNode(str), Primitive.String) =>
TypedNode.PrimitiveTN(Primitive.String, str)
// Numeric
case (N.NumberNode(num), Primitive.Int) =>
TypedNode.PrimitiveTN(Primitive.Int, num.intValue())
case (N.NumberNode(num), Primitive.Long) =>
TypedNode.PrimitiveTN(Primitive.Long, num.longValue())
case (N.NumberNode(num), Primitive.Double) =>
TypedNode.PrimitiveTN(Primitive.Double, num.doubleValue())
case (N.NumberNode(num), Primitive.Float) =>
TypedNode.PrimitiveTN(Primitive.Float, num.floatValue())
case (N.NumberNode(num), Primitive.Short) =>
TypedNode.PrimitiveTN(Primitive.Short, num.shortValue())
case (N.NumberNode(num), Primitive.BigDecimal) =>
TypedNode.PrimitiveTN(Primitive.BigDecimal, BigDecimal(num.doubleValue()))
case (N.NumberNode(num), Primitive.BigInteger) =>
TypedNode.PrimitiveTN(Primitive.BigInteger, BigInt(num.intValue()))
// Boolean
case (N.BooleanNode(bool), Primitive.Bool) =>
TypedNode.PrimitiveTN(Primitive.Bool, bool)
case (node, Primitive.Document) =>
TypedNode.PrimitiveTN(Primitive.Document, node)
case (node, Primitive.String) if node == Node.nullNode =>
TypedNode.PrimitiveTN(Primitive.String, "")
case (node, Primitive.Int) if node == Node.nullNode =>
TypedNode.PrimitiveTN(Primitive.Int, 0)
case (node, Primitive.Long) if node == Node.nullNode =>
TypedNode.PrimitiveTN(Primitive.Long, 0L)
case (node, Primitive.Double) if node == Node.nullNode =>
TypedNode.PrimitiveTN(Primitive.Double, 0.0)
case (node, Primitive.Float) if node == Node.nullNode =>
TypedNode.PrimitiveTN(Primitive.Float, 0.0f)
case (node, Primitive.Short) if node == Node.nullNode =>
TypedNode.PrimitiveTN(Primitive.Short, 0: Short)
case (node, Primitive.Byte) if node == Node.nullNode =>
TypedNode.PrimitiveTN(Primitive.Byte, 0.toByte)
case (node, Primitive.Blob) if node == Node.nullNode =>
TypedNode.PrimitiveTN(Primitive.Blob, Array.empty[Byte])
case (node, Primitive.Bool) if node == Node.nullNode =>
TypedNode.PrimitiveTN(Primitive.Bool, false)
case (node, Primitive.Timestamp) if node == Node.nullNode =>
TypedNode.PrimitiveTN(
Primitive.Timestamp,
java.time.Instant.ofEpochSecond(0)
)
case (_, Primitive.Unit) =>
TypedNode.PrimitiveTN(
Primitive.Unit,
()
)
case other =>
throw new NotImplementedError(s"Unsupported case: $other")
}
}
