ThisType

Does this type conform to given type argument that?

Is this type equivalent to given type argument that?

This type as seen from prefix pre and class clazz. This means: Replace all ThisTypes of clazz or one of its subclasses by pre and instantiate all parameters by arguments of pre. Proceed analogously for ThisTypes referring to outer classes.

Example:

scala> import scala.reflect.runtime.universe._
import scala.reflect.runtime.universe._

scala> class D[T] { def m: T = ??? }
defined class D

scala> class C extends D[Int]
defined class C

scala> val D = typeOf[D[_]].typeSymbol.asClass
D: reflect.runtime.universe.ClassSymbol = class D

scala> val C = typeOf[C].typeSymbol.asClass
C: reflect.runtime.universe.ClassSymbol = class C

scala> val T = D.typeParams(0).asType.toType
T: reflect.runtime.universe.Type = T

scala> T.asSeenFrom(ThisType(C), D)
res0: reflect.runtime.universe.Type = scala.Int

The list of all base classes of this type (including its own typeSymbol) in linearization order, starting with the class itself and ending in class Any.

The least type instance of given class which is a super-type of this type. Example:

class D[T]
class C extends p.D[Int]
ThisType(C).baseType(D) = p.D[Int]

Does this type contain a reference to given symbol?

The defined or declared members with name name in this type; an OverloadedSymbol if several exist, NoSymbol if none exist. Alternatives of overloaded symbol appear in the order they are declared.

A Scope containing directly declared members of this type. Unlike members this method doesn't returns inherited members.

Members in the returned scope might appear in arbitrary order. Use declarations.sorted to get an ordered list of members.

The erased type corresponding to this type after all transformations from Scala to Java have been performed.

Is there part of this type which satisfies predicate p?

Returns optionally first type (in a preorder traversal) which satisfies predicate p, or None if none exists.

Apply f to each part of this type, for side effects only

Apply f to each part of this type, returning a new type. children get mapped before their parents

The member with given name, either directly declared or inherited, an OverloadedSymbol if several exist, NoSymbol if none exist.

A Scope containing all members of this type (directly declared or inherited). Unlike declarations this method also returns inherited members.

Members in the returned scope might appear in arbitrary order. Use declarations.sorted to get an ordered list of members.

Expands type aliases and converts higher-kinded TypeRefs to PolyTypes. Functions on types are also implemented as PolyTypes.

Example: (in the below, <List> is the type constructor of List) TypeRef(pre, <List>, List()) is replaced by PolyType(X, TypeRef(pre, <List>, List(X)))

Substitute symbols in to for corresponding occurrences of references to symbols from in this type.

Substitute types in to for corresponding occurrences of references to symbols from in this type.

The underlying class symbol.

Is this type a type constructor that is missing its type arguments?

The term symbol associated with the type, or NoSymbol for types that do not refer to a term symbol.

Returns the corresponding type constructor (e.g. List for List[T] or List[String])

The type symbol associated with the type, or NoSymbol for types that do not refer to a type symbol.

Does this type weakly conform to given type argument that, i.e., either conforms in terms of <:< or both are primitive number types that conform according to Section "Weak Conformance" in the spec. For example, Int weak_<:< Long.

If this is a singleton type, widen it to its nearest underlying non-singleton base type by applying one or more underlying dereferences. If this is not a singleton type, returns this type itself.

Example:

class Outer { class C ; val x: C } val o: Outer <o.x.type>.widen = o.C

Test two objects for inequality.

Equivalent to x.hashCode except for boxed numeric types and null. For numerics, it returns a hash value which is consistent with value equality: if two value type instances compare as true, then ## will produce the same hash value for each of them. For null returns a hashcode where null.hashCode throws a NullPointerException.

Test two objects for equality. The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).

Cast the receiver object to be of type T0.

Note that the success of a cast at runtime is modulo Scala's erasure semantics. Therefore the expression 1.asInstanceOf[String] will throw a ClassCastException at runtime, while the expression List(1).asInstanceOf[List[String]] will not. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the requested type.

Create a copy of the receiver object.

The default implementation of the clone method is platform dependent.

Tests whether the argument (arg0) is a reference to the receiver object (this).

The eq method implements an equivalence relation on non-null instances of AnyRef, and has three additional properties:

• It is consistent: for any non-null instances x and y of type AnyRef, multiple invocations of x.eq(y) consistently returns true or consistently returns false.
• For any non-null instance x of type AnyRef, x.eq(null) and null.eq(x) returns false.
• null.eq(null) returns true.

When overriding the equals or hashCode methods, it is important to ensure that their behavior is consistent with reference equality. Therefore, if two objects are references to each other (o1 eq o2), they should be equal to each other (o1 == o2) and they should hash to the same value (o1.hashCode == o2.hashCode).

The equality method for reference types. Default implementation delegates to eq.

See also equals in scala.Any.

Called by the garbage collector on the receiver object when there are no more references to the object.

The details of when and if the finalize method is invoked, as well as the interaction between finalize and non-local returns and exceptions, are all platform dependent.

A representation that corresponds to the dynamic class of the receiver object.

The nature of the representation is platform dependent.

The hashCode method for reference types. See hashCode in scala.Any.

Test whether the dynamic type of the receiver object is T0.

Note that the result of the test is modulo Scala's erasure semantics. Therefore the expression 1.isInstanceOf[String] will return false, while the expression List(1).isInstanceOf[List[String]] will return true. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the specified type.

Equivalent to !(this eq that).

Wakes up a single thread that is waiting on the receiver object's monitor.

Wakes up all threads that are waiting on the receiver object's monitor.

Creates a String representation of this object. The default representation is platform dependent. On the java platform it is the concatenation of the class name, "@", and the object's hashcode in hexadecimal.