Package gnu.kawa.reflect

Class SingletonType

  • All Implemented Interfaces:
    java.io.Externalizable, java.io.Serializable, java.lang.reflect.Type
    public class SingletonType
extends ObjectType
implements java.io.Externalizable
    See Also:
    Serialized Form

    • Constructor Detail

      • SingletonType

        public SingletonType​(java.lang.String name)

    • Method Detail

      • getReflectClass

        public java.lang.Class getReflectClass()
        Description copied from class: ObjectType
        Get the java.lang.Class object for the representation type.
        Overrides:
        getReflectClass in class ObjectType

      • getImplementationType

        public Type getImplementationType()
        Description copied from class: Type
        Return Java-level implementation type. The type used to implement types not natively understood by the JVM or the Java language. Usually, the identity function. However, a language might handle union types or template types or type expressions calculated at run time. In that case return the type used at the Java level, and known at compile time.
        Overrides:
        getImplementationType in class Type

      • compare

        public int compare​(Type other)
        Description copied from class: Type
        Return a numeric code showing "subtype" relationship: 1: if other is a pure subtype of this; 0: if has the same values; -1: if this is a pure subtype of other; -2: if they have values in common but neither is a subtype of the other; -3: if the types have no values in common. "Same values" is rather loose; by "A is a subtype of B" we mean that all instance of A can be "widened" to B. More formally, A.compare(B) returns: 1: all B values can be converted to A without a coercion failure (i.e. a ClassCastException or overflow or major loss of information), but not vice versa. 0: all A values can be converted to B without a coercion failure and vice versa; -1: all A values can be converted to B without a coercion failure but not vice versa; -2: there are (potentially) some A values that can be converted to B, and some B values can be converted to A; -3: there are no A values that can be converted to B, and neither are there any B values that can be converted to A.
        Overrides:
        compare in class ObjectType

      • coerceToSingleton

        public static java.lang.Object coerceToSingleton​(java.lang.Object obj)

      • coerceFromObject

        public java.lang.Object coerceFromObject​(java.lang.Object obj)
        Description copied from class: Type
        Convert an object to a value of this Type. The result is actually of the implementation type, boxed as appropriate, so it is suitable for standard reflective operations, like the arguments to Field#set or Method#invoke. Throw a ClassCastException when this is not possible.
        Overrides:
        coerceFromObject in class ObjectType

      • isInstance

        public boolean isInstance​(java.lang.Object obj)
        Overrides:
        isInstance in class ObjectType

      • writeExternal

        public void writeExternal​(java.io.ObjectOutput out)
                   throws java.io.IOException
        Specified by:
        writeExternal in interface java.io.Externalizable
        Throws:
        java.io.IOException

      • readExternal

        public void readExternal​(java.io.ObjectInput in)
                  throws java.io.IOException,
                         java.lang.ClassNotFoundException
        Specified by:
        readExternal in interface java.io.Externalizable
        Throws:
        java.io.IOException
        java.lang.ClassNotFoundException

      • readResolve

        public java.lang.Object readResolve()
                             throws java.io.ObjectStreamException
        Throws:
        java.io.ObjectStreamException