Java example source code file (GETFIELD.java)

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Java - Java tags/keywords

class, exceptionthrower, fieldinstruction, getfield, stackconsumer, stackproducer

The GETFIELD.java Java example source code

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package com.sun.org.apache.bcel.internal.generic;

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import com.sun.org.apache.bcel.internal.Constants;
import com.sun.org.apache.bcel.internal.ExceptionConstants;

/**
 * GETFIELD - Fetch field from object
 * <PRE>Stack: ..., objectref -> ..., value

* OR * <PRE>Stack: ..., objectref -> ..., value.word1, value.word2 * * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm */ public class GETFIELD extends FieldInstruction implements ExceptionThrower, StackConsumer, StackProducer { /** * Empty constructor needed for the Class.newInstance() statement in * Instruction.readInstruction(). Not to be used otherwise. */ GETFIELD() {} public GETFIELD(int index) { super(Constants.GETFIELD, index); } public int produceStack(ConstantPoolGen cpg) { return getFieldSize(cpg); } public Class[] getExceptions() { Class[] cs = new Class[2 + ExceptionConstants.EXCS_FIELD_AND_METHOD_RESOLUTION.length]; System.arraycopy(ExceptionConstants.EXCS_FIELD_AND_METHOD_RESOLUTION, 0, cs, 0, ExceptionConstants.EXCS_FIELD_AND_METHOD_RESOLUTION.length); cs[ExceptionConstants.EXCS_FIELD_AND_METHOD_RESOLUTION.length+1] = ExceptionConstants.INCOMPATIBLE_CLASS_CHANGE_ERROR; cs[ExceptionConstants.EXCS_FIELD_AND_METHOD_RESOLUTION.length] = ExceptionConstants.NULL_POINTER_EXCEPTION; return cs; } /** * Call corresponding visitor method(s). The order is: * Call visitor methods of implemented interfaces first, then * call methods according to the class hierarchy in descending order, * i.e., the most specific visitXXX() call comes last. * * @param v Visitor object */ public void accept(Visitor v) { v.visitExceptionThrower(this); v.visitStackConsumer(this); v.visitStackProducer(this); v.visitTypedInstruction(this); v.visitLoadClass(this); v.visitCPInstruction(this); v.visitFieldOrMethod(this); v.visitFieldInstruction(this); v.visitGETFIELD(this); } }