object Types

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Type Members

  1. final case class ArrayType(arrayTypeRef: ArrayTypeRef, nullable: Boolean) extends Type with Product with Serializable

    Array type.

    Array type.

    Although the array type itself may be non-nullable, the *elements* of an array are always nullable for non-primitive types. This is unavoidable, since arrays can be created with their elements initialized with the zero of the element type.

  2. final case class ArrayTypeRef(base: NonArrayTypeRef, dimensions: Int) extends TypeRef with Product with Serializable

    Array type.

  3. final case class ClassRef(className: ClassName) extends NonArrayTypeRef with Product with Serializable

    Class (or interface) type.

  4. final case class ClassType(className: ClassName, nullable: Boolean) extends Type with Product with Serializable

    Class (or interface) type.

  5. sealed abstract class NonArrayTypeRef extends TypeRef
  6. final case class PrimRef extends NonArrayTypeRef with Product with Serializable

    Primitive type reference.

  7. sealed abstract class PrimType extends Type
  8. sealed abstract class PrimTypeWithRef extends PrimType
  9. final case class RecordType(fields: List[Field]) extends Type with Product with Serializable

    Record type.

    Record type. Used by the optimizer to inline classes as records with multiple fields. They are desugared as several local variables by JSDesugaring. Record types cannot cross method boundaries, so they cannot appear as the type of fields or parameters, nor as result types of methods. The compiler itself never generates record types.

  10. sealed abstract class Type extends AnyRef

    Type of a term (expression or statement) in the IR.

    Type of a term (expression or statement) in the IR.

    There is a many-to-one relationship from TypeRefs to Types, because java.lang.Object and JS types all collapse to AnyType.

    In fact, there are two Types that do not have any real equivalent in type refs: StringType and UndefType, as they refer to the non-null variants of java.lang.String and java.lang.Void, respectively.

  11. sealed abstract class TypeRef extends Comparable[TypeRef]

    Type reference (allowed for classOf[], is/asInstanceOf[]).

    Type reference (allowed for classOf[], is/asInstanceOf[]).

    A TypeRef has exactly the same level of precision as a JVM type. There is a one-to-one relationship between a TypeRef and an instance of java.lang.Class at run-time. This means that:

    • All primitive types have their TypeRef (including scala.Byte and scala.Short), and they are different from their boxed versions.
    • JS types are not erased to any
    • Array types are like on the JVM

    A TypeRef therefore uniquely identifies a classOf[T]. It is also the type refs that are used in method signatures, and which therefore dictate JVM/IR overloading.

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. final val BooleanRef: PrimRef
  5. val BoxedClassToPrimType: Map[ClassName, PrimType]
  6. final val ByteRef: PrimRef
  7. final val CharRef: PrimRef
  8. final val DoubleRef: PrimRef
  9. final val FloatRef: PrimRef
  10. final val IntRef: PrimRef
  11. final val LongRef: PrimRef
  12. final val NothingRef: PrimRef
  13. final val NullRef: PrimRef
  14. val PrimTypeToBoxedClass: Map[PrimType, ClassName]
  15. final val ShortRef: PrimRef
  16. final val VoidRef: PrimRef
  17. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  18. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  19. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  20. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  21. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  22. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  23. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  24. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  25. def isSubtype(lhs: Type, rhs: Type)(isSubclass: (ClassName, ClassName) ⇒ Boolean): Boolean

    Tests whether a type lhs is a subtype of rhs (or equal).

    Tests whether a type lhs is a subtype of rhs (or equal).

    isSubclass

    A function testing whether a class/interface is a subclass of another class/interface.

  26. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  27. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  28. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  29. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  30. def toString(): String
    Definition Classes
    AnyRef → Any
  31. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  32. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  33. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... ) @native()
  34. def zeroOf(tpe: Type)(implicit pos: Position): Tree

    Generates a literal zero of the given type.

  35. object AnyNotNullType extends Type with Product with Serializable

    Any type except null.

  36. object AnyType extends Type with Product with Serializable

    Any type (the top type of this type system).

    Any type (the top type of this type system). A variable of this type can contain any value, including undefined and null and any JS value. This type supports a very limited set of Scala operations, the ones common to all values. Basically only reference equality tests and instance tests. It also supports all JavaScript operations, since all Scala objects are also genuine JavaScript objects. The type java.lang.Object in the back-end maps to AnyType because it can hold JS values (not only instances of Scala.js classes).

  37. object ArrayTypeRef extends Serializable
  38. object BooleanType extends PrimTypeWithRef with Product with Serializable

    Boolean type.

    Boolean type. It does not accept null nor undefined.

  39. object ByteType extends PrimTypeWithRef with Product with Serializable

    8-bit signed integer type.

    8-bit signed integer type. It does not accept null nor undefined.

  40. object CharType extends PrimTypeWithRef with Product with Serializable

    Char type, a 16-bit UTF-16 code unit.

    Char type, a 16-bit UTF-16 code unit. It does not accept null nor undefined.

  41. object DoubleType extends PrimTypeWithRef with Product with Serializable

    Double type (64-bit).

    Double type (64-bit). It does not accept null nor undefined.

  42. object FloatType extends PrimTypeWithRef with Product with Serializable

    Float type (32-bit).

    Float type (32-bit). It does not accept null nor undefined.

  43. object IntType extends PrimTypeWithRef with Product with Serializable

    32-bit signed integer type.

    32-bit signed integer type. It does not accept null nor undefined.

  44. object LongType extends PrimTypeWithRef with Product with Serializable

    64-bit signed integer type.

    64-bit signed integer type. It does not accept null nor undefined.

  45. object NoType extends PrimTypeWithRef with Product with Serializable

    No type.

  46. object NothingType extends PrimTypeWithRef with Product with Serializable

    Nothing type (the bottom type of this type system).

    Nothing type (the bottom type of this type system). Expressions from which one can never come back are typed as Nothing. For example, throw and return.

  47. object NullType extends PrimTypeWithRef with Product with Serializable

    The type of null.

    The type of null. It does not accept undefined. The null type is a subtype of all class types and array types.

  48. object RecordType extends Serializable
  49. object ShortType extends PrimTypeWithRef with Product with Serializable

    16-bit signed integer type.

    16-bit signed integer type. It does not accept null nor undefined.

  50. object StringType extends PrimType with Product with Serializable

    String type.

    String type. It does not accept null nor undefined.

  51. object UndefType extends PrimType with Product with Serializable

    The type of undefined.

Inherited from AnyRef

Inherited from Any

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