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

Class LabelForm

java.lang.Object

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

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

public class LabelForm
extends ByteCodeForm

This class implements the byte code form for those bytecodes which have label references (and only label references).

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
LabelForm(int opcode, java.lang.String name, int[] rewrite)	Constructs a new instance with the specified opcode, name, operandType and rewrite.
LabelForm(int opcode, java.lang.String name, int[] rewrite, boolean widened)	Constructs a new instance with the specified opcode, name, operandType and rewrite.

Method Summary

Modifier and Type	Method	Description
void	fixUpByteCodeTargets(ByteCode byteCode, CodeAttribute codeAttribute)	The ByteCodeForm knows how to fix up a bytecode if it needs to be fixed up because it holds a Label bytecode.
void	setByteCodeOperands(ByteCode byteCode, OperandManager operandManager, int codeLength)	Sets the rewrite of the byteCode.

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

calculateOperandPosition, firstOperandIndex, 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

Field Detail

widened

protected boolean widened

Constructor Detail

LabelForm

public LabelForm(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.

LabelForm

public LabelForm(int opcode,
                 java.lang.String name,
                 int[] rewrite,
                 boolean widened)

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.

widened - TODO.

Method Detail

fixUpByteCodeTargets

public void fixUpByteCodeTargets(ByteCode byteCode,
                                 CodeAttribute codeAttribute)

Description copied from class: ByteCodeForm

The ByteCodeForm knows how to fix up a bytecode if it needs to be fixed up because it holds a Label bytecode.

Overrides:

fixUpByteCodeTargets in class ByteCodeForm

Parameters:

byteCode - a ByteCode to be fixed up

codeAttribute - a CodeAttribute used to determine how the ByteCode should be fixed up.

setByteCodeOperands

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

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).