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

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

byteCodeArray, byteCodesByName, WIDENED

Constructor Summary

Constructors

Constructor	Description
SingleByteReferenceForm(int opcode, java.lang.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 org.apache.commons.compress.harmony.unpack200.bytecode.forms.ReferenceForm

setByteCodeOperands

Methods inherited from class org.apache.commons.compress.harmony.unpack200.bytecode.forms.ByteCodeForm

calculateOperandPosition, firstOperandIndex, fixUpByteCodeTargets, get, getName, getOpcode, getRewrite, getRewriteCopy, hasMultipleByteCodes, hasNoOperand, operandLength, toString

Methods inherited from class java.lang.Object

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

Field Detail

widened

protected boolean widened

Constructor Detail

SingleByteReferenceForm

public SingleByteReferenceForm(int opcode,
                               java.lang.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 Detail

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].