SingleByteReferenceForm

java.lang.Object

org.apache.commons.compress.harmony.unpack200.bytecode.forms.ByteCodeForm

org.apache.commons.compress.harmony.unpack200.bytecode.forms.ReferenceForm

org.apache.commons.compress.harmony.unpack200.bytecode.forms.SingleByteReferenceForm

Direct Known Subclasses:: FloatRefForm, IntRefForm, StringRefForm

public abstract class SingleByteReferenceForm extends ReferenceForm

Some bytecodes (such as (a)ldc, fldc and ildc) have single-byte references to the class pool. This class is the abstract superclass of those classes.

Field Summary

Fields

Modifier and Type

Field

Description

protected boolean

widened

Fields inherited from class ByteCodeForm
byteCodeArray, byteCodesByName, WIDENED
Constructor Summary

Constructors

Constructor

Description

SingleByteReferenceForm(int opcode, String name, int[] rewrite)

Constructs a new instance with the specified opcode, name, operandType and rewrite.
Method Summary

Modifier and Type

Method

Description

protected abstract int

getOffset(OperandManager operandManager)

protected abstract int

getPoolID()

boolean

nestedMustStartClassPool()

protected void

setNestedEntries(ByteCode byteCode, OperandManager operandManager, int offset)

Sets the nested entries.

Methods inherited from class ReferenceForm
setByteCodeOperands

Methods inherited from class ByteCodeForm
calculateOperandPosition, firstOperandIndex, fixUpByteCodeTargets, get, getName, getOpcode, getRewrite, getRewriteCopy, hasMultipleByteCodes, hasNoOperand, operandLength, toString

Methods inherited from class Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details
- widened
  
  protected boolean widened
Constructor Details
- SingleByteReferenceForm
  
  public SingleByteReferenceForm(int opcode, String name, int[] rewrite)
  
  Constructs a new instance with the specified opcode, name, operandType and rewrite.
  
  Parameters:
  
  opcode - index corresponding to the opcode's value.
  
  name - String printable name of the opcode.
  
  rewrite - Operand positions (which will later be rewritten in ByteCodes) are indicated by -1.
Method Details
- getOffset
  
  protected abstract int getOffset(OperandManager operandManager)
  
  Specified by:
  
  getOffset in class ReferenceForm
- getPoolID
  
  protected abstract int getPoolID()
  
  Specified by:
  
  getPoolID in class ReferenceForm
- nestedMustStartClassPool
  
  public boolean nestedMustStartClassPool()
  
  Overrides:
  
  nestedMustStartClassPool in class ByteCodeForm
- setNestedEntries
  
  protected void setNestedEntries(ByteCode byteCode, OperandManager operandManager, int offset) throws Pack200Exception
  
  Description copied from class: ReferenceForm
  
  Sets the nested entries.
  
  Overrides:
  
  setNestedEntries in class ReferenceForm
  
  Parameters:
  
  byteCode - byte codes.
  
  operandManager - Operand manager.
  
  offset - offset.
  
  Throws:
  
  Pack200Exception - if support for a type is not supported or the offset not in the range [0, Integer.MAX_VALUE].