Package org.aspectj.apache.bcel.generic
Class ReferenceType
java.lang.Object
org.aspectj.apache.bcel.generic.Type
org.aspectj.apache.bcel.generic.ReferenceType
- Direct Known Subclasses:
ArrayType
,ObjectType
Super class for object and array types.
- Version:
- $Id: ReferenceType.java,v 1.6 2009/09/09 22:18:20 aclement Exp $
- Author:
- M. Dahm
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Nested Class Summary
Nested classes/interfaces inherited from class org.aspectj.apache.bcel.generic.Type
Type.TypeHolder
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Field Summary
Fields inherited from class org.aspectj.apache.bcel.generic.Type
BOOLEAN, BYTE, CHAR, CLASS, CLASS_ARRAY, DOUBLE, EXCEPTION, FLOAT, INT, INTEGER, ITERATOR, LIST, LONG, NO_ARGS, NULL, OBJECT, OBJECT_ARRAY, SHORT, signature, STRING, STRING_ARRAY, STRINGARRAY1, STRINGARRAY2, STRINGARRAY3, STRINGARRAY4, STRINGARRAY5, STRINGARRAY6, STRINGARRAY7, STRINGBUFFER, STRINGBUILDER, THROWABLE, type, UNKNOWN, VOID
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionThis commutative operation returns the first common superclass (narrowest ReferenceType referencing a class, not an interface).boolean
Return true iff this is assignment compatible with another type t as defined in the JVM specification; see the AASTORE definition there.boolean
isCastableTo(Type t)
Return true iff this type is castable to another type t as defined in the JVM specification.Methods inherited from class org.aspectj.apache.bcel.generic.Type
getArgumentSizes, getArgumentTypes, getReturnType, getSignature, getSignature, getSignature, getSize, getType, getType, getType, getTypeInternal, getTypeSize, toString
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Constructor Details
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ReferenceType
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Method Details
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isCastableTo
Return true iff this type is castable to another type t as defined in the JVM specification. The case where this is Type.NULL is not defined (see the CHECKCAST definition in the JVM specification). However, because e.g. CHECKCAST doesn't throw a ClassCastException when casting a null reference to any Object, true is returned in this case. -
isAssignmentCompatibleWith
Return true iff this is assignment compatible with another type t as defined in the JVM specification; see the AASTORE definition there. -
getFirstCommonSuperclass
This commutative operation returns the first common superclass (narrowest ReferenceType referencing a class, not an interface). If one of the types is a superclass of the other, the former is returned. If "this" is Type.NULL, then t is returned. If t is Type.NULL, then "this" is returned. If "this" equals t ['this.equals(t)'] "this" is returned. If "this" or t is an ArrayType, then Type.OBJECT is returned; unless their dimensions match. Then an ArrayType of the same number of dimensions is returned, with its basic type being the first common super class of the basic types of "this" and t. If "this" or t is a ReferenceType referencing an interface, then Type.OBJECT is returned. If not all of the two classes' superclasses cannot be found, "null" is returned. See the JVM specification edition 2, "4.9.2 The Bytecode Verifier".
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