org.compass.core.util.asm.tree
Class AbstractInsnNode

java.lang.Object
  org.compass.core.util.asm.tree.AbstractInsnNode

Direct Known 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.
(package private) int	index Index of this instruction in the list to which it belongs.
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.
(package private) AbstractInsnNode	next Next instruction in the list to which this instruction belongs.
protected int	opcode The opcode of this instruction.
(package private) AbstractInsnNode	prev Previous instruction in the list to which this instruction belongs.
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.

Constructor Summary

protected

AbstractInsnNode(int opcode) Constructs a new AbstractInsnNode.

Method Summary

abstract void	accept(MethodVisitor cv) Makes the given code visitor visit this instruction.
(package private) static LabelNode	clone(LabelNode label, Map map) Returns the clone of the given label.
(package private) static LabelNode[]	clone(List labels, Map map) Returns the clones of the given labels.
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.

Methods inherited from class java.lang.Object

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

Field Detail

INSN

public static final int INSN

The type of InsnNode instructions.

See Also:

Constant Field Values

INT_INSN

public static final int INT_INSN

The type of IntInsnNode instructions.

See Also:

Constant Field Values

VAR_INSN

public static final int VAR_INSN

The type of VarInsnNode instructions.

See Also:

Constant Field Values

TYPE_INSN

public static final int TYPE_INSN

The type of TypeInsnNode instructions.

See Also:

Constant Field Values

FIELD_INSN

public static final int FIELD_INSN

The type of FieldInsnNode instructions.

See Also:

Constant Field Values

METHOD_INSN

public static final int METHOD_INSN

The type of MethodInsnNode instructions.

See Also:

Constant Field Values

JUMP_INSN

public static final int JUMP_INSN

The type of JumpInsnNode instructions.

See Also:

Constant Field Values

LABEL

public static final int LABEL

The type of LabelNode "instructions".

See Also:

Constant Field Values

LDC_INSN

public static final int LDC_INSN

The type of LdcInsnNode instructions.

See Also:

Constant Field Values

IINC_INSN

public static final int IINC_INSN

The type of IincInsnNode instructions.

See Also:

Constant Field Values

TABLESWITCH_INSN

public static final int TABLESWITCH_INSN

The type of TableSwitchInsnNode instructions.

See Also:

Constant Field Values

LOOKUPSWITCH_INSN

public static final int LOOKUPSWITCH_INSN

The type of LookupSwitchInsnNode instructions.

See Also:

Constant Field Values

MULTIANEWARRAY_INSN

public static final int MULTIANEWARRAY_INSN

The type of MultiANewArrayInsnNode instructions.

See Also:

Constant Field Values

FRAME

public static final int FRAME

The type of FrameNode "instructions".

See Also:

Constant Field Values

LINE

public static final int LINE

The type of LineNumberNode "instructions".

See Also:

Constant Field Values

opcode

protected int opcode

The opcode of this instruction.

prev

AbstractInsnNode prev

Previous instruction in the list to which this instruction belongs.

next

AbstractInsnNode next

Next instruction in the list to which this instruction belongs.

index

int index

Index of this instruction in the list to which it belongs. The value of this field is correct only when InsnList.cache is not null. A value of -1 indicates that this instruction does not belong to any InsnList.

Constructor Detail

AbstractInsnNode

protected AbstractInsnNode(int opcode)

Constructs a new AbstractInsnNode.

Parameters:

opcode - the opcode of the instruction to be constructed.

Method Detail

getOpcode

public int getOpcode()

Returns the opcode of this instruction.

Returns:

the opcode of this instruction.

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.

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.

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.

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.

clone

static LabelNode clone(LabelNode label,
                       Map map)

Returns the clone of the given label.

Parameters:

label - a label.

map - a map from LabelNodes to cloned LabelNodes.

Returns:

the clone of the given label.

clone

static LabelNode[] clone(List labels,
                         Map map)

Returns the clones of the given labels.

Parameters:

labels - a list of labels.

map - a map from LabelNodes to cloned LabelNodes.

Returns:

the clones of the given labels.