Package gnu.kawa.reflect

Class MultValuesType

    • Constructor Detail

      • MultValuesType

        public MultValuesType​(Type[] itemTypes)

    • Method Detail

      • getValueCount

        public int getValueCount()

      • getValueType

        public Type getValueType​(int index)

      • 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.
        Specified by:
        getImplementationType in interface TypeValue
        Overrides:
        getImplementationType in class OccurrenceType

      • create

        public static Type create​(Type[] itemTypes)

      • isCompatibleWithValue

        public int isCompatibleWithValue​(Type valueType)
        Description copied from class: Type
        If this is the target type, is a given source type compatible?
        Overrides:
        isCompatibleWithValue in class Type
        Returns:
        -1 if not compatible; 0 if need to check at run-time; 1 if compatible; 2 if compatible and no conversion or cast needed. We also return 0 for some "narrowing" conversions even if we know they will always succeed, so as to make such conversions less preferred when doing method overloading.

      • 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 OccurrenceType