com.google.javascript.rhino

Interface TypeI

All Known Subinterfaces:

FunctionTypeI, ObjectTypeI

All Known Implementing Classes:

AllType, BooleanType, EnumElementType, EnumType, FunctionType, JSType, JSType, NamedType, NoObjectType, NoType, NullType, NumberType, ObjectType, PrototypeObjectType, ProxyObjectType, RecordType, StringType, TemplateType, TemplatizedType, UnionType, UnknownType, VoidType

public interface TypeI

A common interface for types in the old type system and the new type system, so that the other passes need not know which type system they are using.

Author:

blickly@google.com (Ben Lickly), dimvar@google.com (Dimitris Vardoulakis)

Method Summary

Modifier and Type	Method and Description
boolean	isBottom()
boolean	isConstructor()
boolean	isEquivalentTo(TypeI type)
boolean	isFunctionType()
boolean	isInterface()
boolean	isNullable()
boolean	isSubtypeOf(TypeI type)
boolean	isUnknownType()
TypeI	restrictByNotNullOrUndefined() If this is a union type, returns a union type that does not include the null or undefined type.
FunctionTypeI	toMaybeFunctionType() Downcasts this to a FunctionTypeI, or returns null if this is not a function.
ObjectTypeI	toMaybeObjectType() If this type is a single object, downcast it to ObjectTypeI.

Method Detail

isBottom

boolean isBottom()

isConstructor

boolean isConstructor()

isEquivalentTo

boolean isEquivalentTo(TypeI type)

isFunctionType

boolean isFunctionType()

isInterface

boolean isInterface()

isSubtypeOf

boolean isSubtypeOf(TypeI type)

isUnknownType

boolean isUnknownType()

isNullable

boolean isNullable()

restrictByNotNullOrUndefined

TypeI restrictByNotNullOrUndefined()

If this is a union type, returns a union type that does not include the null or undefined type.

toMaybeFunctionType

FunctionTypeI toMaybeFunctionType()

Downcasts this to a FunctionTypeI, or returns null if this is not a function.

toMaybeObjectType

ObjectTypeI toMaybeObjectType()

If this type is a single object, downcast it to ObjectTypeI. If it is a non-object or a union of objects, return null.