gnu.kawa.reflect

Class LazyType

java.lang.Object

gnu.bytecode.Type

gnu.bytecode.ObjectType

gnu.kawa.reflect.LazyType

All Implemented Interfaces:

java.lang.reflect.Type

public class LazyType
extends ObjectType

The type of lazy values - i.e. ones that eventually produce values. This includes futures and promises.

Nested Class Summary

Nested classes/interfaces inherited from class gnu.bytecode.Type

Type.NeverReturns

Field Summary

Fields

Modifier and Type	Field and Description
static ClassType	lazyType
static ClassType	promiseType

Fields inherited from class gnu.bytecode.ObjectType

flags

Fields inherited from class gnu.bytecode.Type

boolean_ctype, boolean_type, booleanType, booleanValue_method, byte_type, byteType, char_type, charType, clone_method, double_type, doubleType, doubleValue_method, errorType, float_type, floatType, floatValue_method, int_type, intType, intValue_method, java_lang_Class_type, javalangannotationAnnotationType, javalangBooleanType, javalangCharacterType, javalangClassType, javalanginvokeMethodHandleType, javalangNumberType, javalangObjectType, javalangStringType, javalangThrowableType, long_type, longType, longValue_method, neverReturnsType, nullType, number_type, objectType, pointer_type, reflectClass, short_type, shortType, string_type, throwable_type, toString_method, tostring_type, toStringType, typeArray0, void_type, voidType

Constructor Summary

Constructors

Constructor and Description
LazyType(ClassType rawType, Type valueType)

Method Summary

Modifier and Type	Method and Description
int	compare(Type other) 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.
Type	getImplementationType() Return Java-level implementation type.
static LazyType	getInstance(ClassType rawType, Type valueType)
static LazyType	getLazyType(Type valueType)
static LazyType	getPromiseType(Type valueType)
Type	getRawType() Return JVM-level implementation type.
Type	getValueType()
static boolean	maybeLazy(Type type)
java.lang.String	toString()

Methods inherited from class gnu.bytecode.ObjectType

coerceFromObject, emitCoerceFromObject, getContextClass, getContextClassLoader, getField, getInterfaces, getInternalName, getMethod, getMethods, getMethods, getReflectClass, getSuperclass, isExisting, isInstance, setExisting

Methods inherited from class gnu.bytecode.Type

coerceToObject, emitCoerceToObject, emitConvertFromPrimitive, emitIsInstance, getGenericSignature, getMaybeGenericSignature, getName, getRealType, getSignature, getSize, getSizeInWords, getType, hashCode, isCompatibleWithValue, isCompatibleWithValue, isInterface, isMoreSpecific, isSame, isSubtype, isValidJavaTypeName, isVoid, lookupType, lowestCommonSharedType, lowestCommonSuperType, make, make, printSignature, promote, promoteIfUnsigned, registerTypeForClass, setGenericSignature, setName, setReflectClass, setSignature, signatureLength, signatureLength, signatureToName, signatureToPrimitive, signatureToType, signatureToType, swappedCompareResult

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.reflect.Type

getTypeName

Field Detail

lazyType

public static final ClassType lazyType

promiseType

public static final ClassType promiseType

Constructor Detail

LazyType

public LazyType(ClassType rawType,
                Type valueType)

Method Detail

getValueType

public Type getValueType()

getRawType

public Type getRawType()

Description copied from class: Type

Return JVM-level implementation type.

Overrides:

getRawType in class Type

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

getInstance

public static LazyType getInstance(ClassType rawType,
                                   Type valueType)

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

getLazyType

public static LazyType getLazyType(Type valueType)

getPromiseType

public static LazyType getPromiseType(Type valueType)

toString

public java.lang.String toString()

Overrides:

toString in class Type

maybeLazy

public static boolean maybeLazy(Type type)