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

Class ReferenceForm

java.lang.Object

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

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

Direct Known Subclasses:

ClassRefForm, ClassSpecificReferenceForm, DoubleForm, FieldRefForm, IMethodRefForm, LongForm, MethodRefForm, SingleByteReferenceForm

public abstract class ReferenceForm
extends ByteCodeForm

Abstract class of all ByteCodeForms which add a nested entry from the globalConstantPool.

Field Summary

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

byteCodeArray, byteCodesByName, WIDENED

Constructor Summary

Constructors

Constructor	Description
ReferenceForm(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()
void	setByteCodeOperands(ByteCode byteCode, OperandManager operandManager, int codeLength)	Sets the rewrite of the byteCode.
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.ByteCodeForm

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

Methods inherited from class java.lang.Object

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

Constructor Detail

ReferenceForm

public ReferenceForm(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)

getPoolID

protected abstract int getPoolID()

setByteCodeOperands

public void setByteCodeOperands(ByteCode byteCode,
                                OperandManager operandManager,
                                int codeLength)
                         throws Pack200Exception

Description copied from class: ByteCodeForm

Sets the rewrite of the byteCode.

Specified by:

setByteCodeOperands in class ByteCodeForm

Parameters:

byteCode - ByteCode to be updated (!)

operandManager - OperandTable from which to draw info

codeLength - Length of bytes (excluding this bytecode) from the beginning of the method. Used in calculating padding for some variable-length bytecodes (such as lookupswitch, tableswitch).

Throws:

Pack200Exception - if a type is not supported or an index not in the range [0, Integer.MAX_VALUE].

setNestedEntries

protected void setNestedEntries(ByteCode byteCode,
                                OperandManager operandManager,
                                int offset)
                         throws Pack200Exception

Sets the nested entries.

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].