wyal.lang

Class WyalFile.Type.Union

java.lang.Object

wybs.lang.SyntacticElement.Impl

wyal.heap.AbstractSyntacticItem

wyal.lang.WyalFile.Type.UnionOrIntersection

wyal.lang.WyalFile.Type.Union

All Implemented Interfaces:

Comparable<SyntacticItem>, SyntacticItem, WyalFile.Type, wybs.lang.SyntacticElement

Enclosing interface:

WyalFile.Type

public static class WyalFile.Type.Union
extends WyalFile.Type.UnionOrIntersection

Represents a union type, which is of the form:

 UnionType ::= IntersectionType ('|' IntersectionType)*
 

Union types are used to compose types together. For example, the type int|null represents the type which is either an int or null.

Nested Class Summary

Nested classes/interfaces inherited from class wyal.heap.AbstractSyntacticItem

AbstractSyntacticItem.Blocks, AbstractSyntacticItem.Extras, AbstractSyntacticItem.Operands, AbstractSyntacticItem.Schema

Nested classes/interfaces inherited from interface wyal.lang.WyalFile.Type

WyalFile.Type.Any, WyalFile.Type.Array, WyalFile.Type.Atom, WyalFile.Type.Bool, WyalFile.Type.Byte, WyalFile.Type.Function, WyalFile.Type.FunctionOrMacroOrInvariant, WyalFile.Type.FunctionOrMethodOrProperty, WyalFile.Type.Int, WyalFile.Type.Intersection, WyalFile.Type.Invariant, WyalFile.Type.Method, WyalFile.Type.Negation, WyalFile.Type.Nominal, WyalFile.Type.Null, WyalFile.Type.Primitive, WyalFile.Type.Property, WyalFile.Type.Record, WyalFile.Type.Reference, WyalFile.Type.Union, WyalFile.Type.UnionOrIntersection, WyalFile.Type.Void

Nested classes/interfaces inherited from interface wybs.lang.SyntacticElement

wybs.lang.SyntacticElement.Impl

Field Summary

Fields inherited from class wyal.heap.AbstractSyntacticItem

data

Fields inherited from interface wyal.lang.WyalFile.Type

Any, Bool, Int, Null, Void

Constructor Summary

Constructors

Constructor and Description
Union(WyalFile.Type[] types, wybs.lang.Attribute... attributes)

Method Summary

Modifier and Type	Method and Description
WyalFile.Type.Union	clone(SyntacticItem[] operands) Create a new copy of the given syntactic item with the given operands.
String	toString()

Methods inherited from class wyal.lang.WyalFile.Type.UnionOrIntersection

getOperand, getOperands

Methods inherited from class wyal.heap.AbstractSyntacticItem

allocate, compareTo, equals, getData, getIndex, getOpcode, getParent, hashCode, setOpcode, setOperand, size

Methods inherited from class wybs.lang.SyntacticElement.Impl

attribute, attributes

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface wyal.lang.SyntacticItem

allocate, getData, getIndex, getOpcode, getParent, setOpcode, setOperand, size

Methods inherited from interface wybs.lang.SyntacticElement

attribute, attributes

Methods inherited from interface java.lang.Comparable

compareTo

Constructor Detail

Union

public Union(WyalFile.Type[] types,
             wybs.lang.Attribute... attributes)

Method Detail

clone

public WyalFile.Type.Union clone(SyntacticItem[] operands)

Description copied from interface: SyntacticItem

Create a new copy of the given syntactic item with the given operands. The number of operands must match size() for this item, and be of appropriate type.

Returns:

toString

public String toString()

Overrides:

toString in class AbstractSyntacticItem