org.objectweb.asm.tree

类 FrameNode

java.lang.Object

org.objectweb.asm.tree.AbstractInsnNode

org.objectweb.asm.tree.FrameNode

public class FrameNode
extends AbstractInsnNode

A node that represents a stack map frame. These nodes are pseudo instruction nodes in order to be inserted in an instruction list. In fact these nodes must(*) be inserted just before any instruction node i that follows an unconditionnal branch instruction such as GOTO or THROW, that is the target of a jump instruction, or that starts an exception handler block. The stack map frame types must describe the values of the local variables and of the operand stack elements just before i is executed.

(*) this is mandatory only for classes whose version is greater than or equal to V1_6.

字段概要

字段

限定符和类型	字段和说明
java.util.List<java.lang.Object>	local The types of the local variables of this stack map frame.
java.util.List<java.lang.Object>	stack The types of the operand stack elements of this stack map frame.
int	type The type of this frame.

从类继承的字段 org.objectweb.asm.tree.AbstractInsnNode

FIELD_INSN, FRAME, IINC_INSN, INSN, INT_INSN, INVOKE_DYNAMIC_INSN, JUMP_INSN, LABEL, LDC_INSN, LINE, LOOKUPSWITCH_INSN, METHOD_INSN, MULTIANEWARRAY_INSN, opcode, TABLESWITCH_INSN, TYPE_INSN, VAR_INSN

构造器概要

构造器

构造器和说明
FrameNode(int type, int nLocal, java.lang.Object[] local, int nStack, java.lang.Object[] stack) Constructs a new FrameNode.

方法概要

限定符和类型	方法和说明
void	accept(MethodVisitor mv) Makes the given visitor visit this stack map frame.
AbstractInsnNode	clone(java.util.Map<LabelNode,LabelNode> labels) Returns a copy of this instruction.
int	getType() Returns the type of this instruction.

从类继承的方法 org.objectweb.asm.tree.AbstractInsnNode

getNext, getOpcode, getPrevious

从类继承的方法 java.lang.Object

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

字段详细资料

type

public int type

The type of this frame. Must be Opcodes.F_NEW for expanded frames, or Opcodes.F_FULL, Opcodes.F_APPEND, Opcodes.F_CHOP, Opcodes.F_SAME or Opcodes.F_APPEND, Opcodes.F_SAME1 for compressed frames.

local

public java.util.List<java.lang.Object> local

The types of the local variables of this stack map frame. Elements of this list can be Integer, String or LabelNode objects (for primitive, reference and uninitialized types respectively - see MethodVisitor).

stack

public java.util.List<java.lang.Object> stack

The types of the operand stack elements of this stack map frame. Elements of this list can be Integer, String or LabelNode objects (for primitive, reference and uninitialized types respectively - see MethodVisitor).

构造器详细资料

FrameNode

public FrameNode(int type,
                 int nLocal,
                 java.lang.Object[] local,
                 int nStack,
                 java.lang.Object[] stack)

Constructs a new FrameNode.

参数:

type - the type of this frame. Must be Opcodes.F_NEW for expanded frames, or Opcodes.F_FULL, Opcodes.F_APPEND, Opcodes.F_CHOP, Opcodes.F_SAME or Opcodes.F_APPEND, Opcodes.F_SAME1 for compressed frames.

nLocal - number of local variables of this stack map frame.

local - the types of the local variables of this stack map frame. Elements of this list can be Integer, String or LabelNode objects (for primitive, reference and uninitialized types respectively - see MethodVisitor).

nStack - number of operand stack elements of this stack map frame.

stack - the types of the operand stack elements of this stack map frame. Elements of this list can be Integer, String or LabelNode objects (for primitive, reference and uninitialized types respectively - see MethodVisitor).

方法详细资料

getType

public int getType()

从类复制的说明: AbstractInsnNode

Returns the type of this instruction.

指定者:

getType 在类中 AbstractInsnNode

返回:

the type of this instruction, i.e. one the constants defined in this class.

accept

public void accept(MethodVisitor mv)

Makes the given visitor visit this stack map frame.

指定者:

accept 在类中 AbstractInsnNode

参数:

mv - a method visitor.

clone

public AbstractInsnNode clone(java.util.Map<LabelNode,LabelNode> labels)

从类复制的说明: AbstractInsnNode

Returns a copy of this instruction.

指定者:

clone 在类中 AbstractInsnNode

参数:

labels - a map from LabelNodes to cloned LabelNodes.

返回:

a copy of this instruction. The returned instruction does not belong to any InsnList.