java.lang.Object
- proguard.classfile.instruction.Instruction
- - proguard.classfile.editor.CodeAttributeEditor.Label

Enclosing class:

CodeAttributeEditor
```
public static class CodeAttributeEditor.Label
extends Instruction
```
This pseudo-instruction represents a label that marks an instruction offset, for use in the context of the code attribute editor only.

Field Summary

Fields
Modifier and Type Field Description

protected int identifier
- Fields inherited from class proguard.classfile.instruction.Instruction
  ARRAY_T_BOOLEAN, ARRAY_T_BYTE, ARRAY_T_CHAR, ARRAY_T_DOUBLE, ARRAY_T_FLOAT, ARRAY_T_INT, ARRAY_T_LONG, ARRAY_T_SHORT, NAMES, OP_AALOAD, OP_AASTORE, OP_ACONST_NULL, OP_ALOAD, OP_ALOAD_0, OP_ALOAD_1, OP_ALOAD_2, OP_ALOAD_3, OP_ANEWARRAY, OP_ARETURN, OP_ARRAYLENGTH, OP_ASTORE, OP_ASTORE_0, OP_ASTORE_1, OP_ASTORE_2, OP_ASTORE_3, OP_ATHROW, OP_BALOAD, OP_BASTORE, OP_BIPUSH, OP_CALOAD, OP_CASTORE, OP_CHECKCAST, OP_D2F, OP_D2I, OP_D2L, OP_DADD, OP_DALOAD, OP_DASTORE, OP_DCMPG, OP_DCMPL, OP_DCONST_0, OP_DCONST_1, OP_DDIV, OP_DLOAD, OP_DLOAD_0, OP_DLOAD_1, OP_DLOAD_2, OP_DLOAD_3, OP_DMUL, OP_DNEG, OP_DREM, OP_DRETURN, OP_DSTORE, OP_DSTORE_0, OP_DSTORE_1, OP_DSTORE_2, OP_DSTORE_3, OP_DSUB, OP_DUP, OP_DUP_X1, OP_DUP_X2, OP_DUP2, OP_DUP2_X1, OP_DUP2_X2, OP_F2D, OP_F2I, OP_F2L, OP_FADD, OP_FALOAD, OP_FASTORE, OP_FCMPG, OP_FCMPL, OP_FCONST_0, OP_FCONST_1, OP_FCONST_2, OP_FDIV, OP_FLOAD, OP_FLOAD_0, OP_FLOAD_1, OP_FLOAD_2, OP_FLOAD_3, OP_FMUL, OP_FNEG, OP_FREM, OP_FRETURN, OP_FSTORE, OP_FSTORE_0, OP_FSTORE_1, OP_FSTORE_2, OP_FSTORE_3, OP_FSUB, OP_GETFIELD, OP_GETSTATIC, OP_GOTO, OP_GOTO_W, OP_I2B, OP_I2C, OP_I2D, OP_I2F, OP_I2L, OP_I2S, OP_IADD, OP_IALOAD, OP_IAND, OP_IASTORE, OP_ICONST_0, OP_ICONST_1, OP_ICONST_2, OP_ICONST_3, OP_ICONST_4, OP_ICONST_5, OP_ICONST_M1, OP_IDIV, OP_IFACMPEQ, OP_IFACMPNE, OP_IFEQ, OP_IFGE, OP_IFGT, OP_IFICMPEQ, OP_IFICMPGE, OP_IFICMPGT, OP_IFICMPLE, OP_IFICMPLT, OP_IFICMPNE, OP_IFLE, OP_IFLT, OP_IFNE, OP_IFNONNULL, OP_IFNULL, OP_IINC, OP_ILOAD, OP_ILOAD_0, OP_ILOAD_1, OP_ILOAD_2, OP_ILOAD_3, OP_IMUL, OP_INEG, OP_INSTANCEOF, OP_INVOKEDYNAMIC, OP_INVOKEINTERFACE, OP_INVOKESPECIAL, OP_INVOKESTATIC, OP_INVOKEVIRTUAL, OP_IOR, OP_IREM, OP_IRETURN, OP_ISHL, OP_ISHR, OP_ISTORE, OP_ISTORE_0, OP_ISTORE_1, OP_ISTORE_2, OP_ISTORE_3, OP_ISUB, OP_IUSHR, OP_IXOR, OP_JSR, OP_JSR_W, OP_L2D, OP_L2F, OP_L2I, OP_LADD, OP_LALOAD, OP_LAND, OP_LASTORE, OP_LCMP, OP_LCONST_0, OP_LCONST_1, OP_LDC, OP_LDC_W, OP_LDC2_W, OP_LDIV, OP_LLOAD, OP_LLOAD_0, OP_LLOAD_1, OP_LLOAD_2, OP_LLOAD_3, OP_LMUL, OP_LNEG, OP_LOOKUPSWITCH, OP_LOR, OP_LREM, OP_LRETURN, OP_LSHL, OP_LSHR, OP_LSTORE, OP_LSTORE_0, OP_LSTORE_1, OP_LSTORE_2, OP_LSTORE_3, OP_LSUB, OP_LUSHR, OP_LXOR, OP_MONITORENTER, OP_MONITOREXIT, OP_MULTIANEWARRAY, OP_NEW, OP_NEWARRAY, OP_NOP, OP_POP, OP_POP2, OP_PUTFIELD, OP_PUTSTATIC, OP_RET, OP_RETURN, OP_SALOAD, OP_SASTORE, OP_SIPUSH, OP_SWAP, OP_TABLESWITCH, OP_WIDE, opcode

Constructor Summary

Constructors
Constructor Description

Label(int identifier)
Creates a new Label.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`accept(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, InstructionVisitor instructionVisitor)`	Accepts the given visitor.
`boolean`	`equals(java.lang.Object o)`
`int`	`hashCode()`
`int`	`length(int offset)`	Returns the length in bytes of the instruction.
`int`	`offset()`	Returns the offset that can then be used as a branch target in other replacement instructions.
`protected void`	`readInfo(byte[] code, int offset)`	Reads the data following the instruction opcode.
`Instruction`	`shrink()`	Shrinks this instruction to its shortest possible form.
`java.lang.String`	`toString()`
`void`	`write(byte[] code, int offset)`	Writes the Instruction at the given offset in the given code array.
`protected void`	`writeInfo(byte[] code, int offset)`	Writes data following the instruction opcode.

Methods inherited from class proguard.classfile.instruction.Instruction
actualOpcode, canonicalOpcode, getName, isCategory2, isWide, mayInstanceThrowExceptions, mayThrowExceptions, readByte, readInt, readShort, readSignedByte, readSignedShort, readSignedValue, readValue, stackEntryIndexBefore, stackPopCount, stackPushCount, toString, toString, write, writeByte, writeInt, writeShort, writeSignedByte, writeSignedShort, writeSignedValue, writeValue

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - identifier
```
protected final int identifier
```
- Constructor Detail
  - Label
```
public Label(int identifier)
```
    Creates a new Label.
    
    Parameters:
    
    identifier - an identifier that can be chosen freely.
- Method Detail
  - offset
```
public int offset()
```
    Returns the offset that can then be used as a branch target in other replacement instructions.
  - shrink
```
public Instruction shrink()
```
    Description copied from class: Instruction
    
    Shrinks this instruction to its shortest possible form.
    
    Specified by:
    
    shrink in class Instruction
    
    Returns:
    
    this instruction.
  - write
```
public void write(byte[] code,
                  int offset)
```
    Description copied from class: Instruction
    
    Writes the Instruction at the given offset in the given code array.
    
    Overrides:
    
    write in class Instruction
  - readInfo
```
protected void readInfo(byte[] code,
                        int offset)
```
    Description copied from class: Instruction
    
    Reads the data following the instruction opcode.
    
    Specified by:
    
    readInfo in class Instruction
  - writeInfo
```
protected void writeInfo(byte[] code,
                         int offset)
```
    Description copied from class: Instruction
    
    Writes data following the instruction opcode.
    
    Specified by:
    
    writeInfo in class Instruction
  - length
```
public int length(int offset)
```
    Description copied from class: Instruction
    
    Returns the length in bytes of the instruction.
    
    Specified by:
    
    length in class Instruction
  - accept
```
public void accept(Clazz clazz,
                   Method method,
                   CodeAttribute codeAttribute,
                   int offset,
                   InstructionVisitor instructionVisitor)
```
    Description copied from class: Instruction
    
    Accepts the given visitor.
    
    Specified by:
    
    accept in class Instruction
  - equals
```
public boolean equals(java.lang.Object o)
```
    Specified by:
    
    equals in class Instruction
  - hashCode
```
public int hashCode()
```
    Specified by:
    
    hashCode in class Instruction
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object

Class CodeAttributeEditor.Label

Field Summary

Fields inherited from class proguard.classfile.instruction.Instruction

Constructor Summary

Method Summary

Methods inherited from class proguard.classfile.instruction.Instruction

Methods inherited from class java.lang.Object

Field Detail

identifier

Constructor Detail

Label

Method Detail

offset

shrink

write

readInfo

writeInfo

length

accept

equals

hashCode

toString