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org.objectweb.asm.tree

Class AbstractInsnNode

Known Direct Subclasses:
FieldInsnNode, FrameNode, IincInsnNode, InsnNode, IntInsnNode, JumpInsnNode, LabelNode, LdcInsnNode, LineNumberNode, LookupSwitchInsnNode, MethodInsnNode, MultiANewArrayInsnNode, TableSwitchInsnNode, TypeInsnNode, VarInsnNode
public abstract class AbstractInsnNode
extends Object
A node that represents a bytecode instruction. An instruction can appear at most once in at most one InsnList at a time.
Author:
Eric Bruneton

Field Summary

static int
FIELD_INSN
The type of FieldInsnNode instructions.
static int
FRAME
The type of FrameNode "instructions".
static int
IINC_INSN
The type of IincInsnNode instructions.
static int
INSN
The type of InsnNode instructions.
static int
INT_INSN
The type of IntInsnNode instructions.
static int
JUMP_INSN
The type of JumpInsnNode instructions.
static int
LABEL
The type of LabelNode "instructions".
static int
LDC_INSN
The type of LdcInsnNode instructions.
static int
LINE
The type of LineNumberNode "instructions".
static int
LOOKUPSWITCH_INSN
The type of LookupSwitchInsnNode instructions.
static int
METHOD_INSN
The type of MethodInsnNode instructions.
static int
MULTIANEWARRAY_INSN
The type of MultiANewArrayInsnNode instructions.
static int
TABLESWITCH_INSN
The type of TableSwitchInsnNode instructions.
static int
TYPE_INSN
The type of TypeInsnNode instructions.
static int
VAR_INSN
The type of VarInsnNode instructions.
protected int
opcode
The opcode of this instruction.

Constructor Summary

AbstractInsnNode(int opcode)
Constructs a new AbstractInsnNode.

Method Summary

abstract void
accept(MethodVisitor cv)
Makes the given code visitor visit this instruction.
abstract AbstractInsnNode
clone(Map labels)
Returns a copy of this instruction.
AbstractInsnNode
getNext()
Returns the next instruction in the list to which this instruction belongs, if any.
int
getOpcode()
Returns the opcode of this instruction.
AbstractInsnNode
getPrevious()
Returns the previous instruction in the list to which this instruction belongs, if any.
abstract int
getType()
Returns the type of this instruction.

Field Details

FIELD_INSN

public static final int FIELD_INSN
The type of FieldInsnNode instructions.
Field Value:
4

FRAME

public static final int FRAME
The type of FrameNode "instructions".
Field Value:
13

IINC_INSN

public static final int IINC_INSN
The type of IincInsnNode instructions.
Field Value:
9

INSN

public static final int INSN
The type of InsnNode instructions.
Field Value:
0

INT_INSN

public static final int INT_INSN
The type of IntInsnNode instructions.
Field Value:
1

JUMP_INSN

public static final int JUMP_INSN
The type of JumpInsnNode instructions.
Field Value:
6

LABEL

public static final int LABEL
The type of LabelNode "instructions".
Field Value:
7

LDC_INSN

public static final int LDC_INSN
The type of LdcInsnNode instructions.
Field Value:
8

LINE

public static final int LINE
The type of LineNumberNode "instructions".
Field Value:
14

LOOKUPSWITCH_INSN

public static final int LOOKUPSWITCH_INSN
The type of LookupSwitchInsnNode instructions.
Field Value:
11

METHOD_INSN

public static final int METHOD_INSN
The type of MethodInsnNode instructions.
Field Value:
5

MULTIANEWARRAY_INSN

public static final int MULTIANEWARRAY_INSN
The type of MultiANewArrayInsnNode instructions.
Field Value:
12

TABLESWITCH_INSN

public static final int TABLESWITCH_INSN
The type of TableSwitchInsnNode instructions.
Field Value:
10

TYPE_INSN

public static final int TYPE_INSN
The type of TypeInsnNode instructions.
Field Value:
3

VAR_INSN

public static final int VAR_INSN
The type of VarInsnNode instructions.
Field Value:
2

opcode

protected int opcode
The opcode of this instruction.

Constructor Details

AbstractInsnNode

protected AbstractInsnNode(int opcode)
Constructs a new AbstractInsnNode.
Parameters:
opcode - the opcode of the instruction to be constructed.

Method Details

accept

public abstract void accept(MethodVisitor cv)
Makes the given code visitor visit this instruction.
Parameters:
cv - a code visitor.

clone

public abstract AbstractInsnNode clone(Map labels)
Returns a copy of this instruction.
Parameters:
labels - a map from LabelNodes to cloned LabelNodes.
Returns:
a copy of this instruction. The returned instruction does not belong to any InsnList.

getNext

public AbstractInsnNode getNext()
Returns the next instruction in the list to which this instruction belongs, if any.
Returns:
the next instruction in the list to which this instruction belongs, if any. May be null.

getOpcode

public int getOpcode()
Returns the opcode of this instruction.
Returns:
the opcode of this instruction.

getPrevious

public AbstractInsnNode getPrevious()
Returns the previous instruction in the list to which this instruction belongs, if any.
Returns:
the previous instruction in the list to which this instruction belongs, if any. May be null.

getType

public abstract int getType()
Returns the type of this instruction.
Returns:
the type of this instruction, i.e. one the constants defined in this class.

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