com.techtrader.modules.tools.bytecode
Class ClassInstruction

java.lang.Object
  |
  +--com.techtrader.modules.tools.bytecode.Instruction
        |
        +--com.techtrader.modules.tools.bytecode.ClassInstruction

Direct Known Subclasses:

MultiANewArrayInstruction

public class ClassInstruction

extends Instruction

Represents an instruction that takes as an argument a Class to operate on. Examples include ANEWARRAY, CHECKCAST, INSTANCEOF, NEW.

Author:

Abe White

Fields inherited from class com.techtrader.modules.tools.bytecode.Instruction

_byteIndex, _opcode, _opcodeTypes, _owner

Constructor Summary

protected

ClassInstruction(Code owner, int opcode)

Method Summary

void	acceptVisit(BCVisitor visit) Accept a visit from a BCVisitor, calling the appropriate methods to notify the visitor that it has entered this entity, and to provide it with the proper callbacks for each sub-entity owned by this object.
protected void	copy(Instruction orig)
boolean	equals(Object other) ClassInstructions are equal if the type they reference is the same, or if the type of either is unset.
int	getClassIndex() Get the constant pool index of the class for this instruction.
String	getClassName() Get the nam of the class to operate on.
Class	getClassType() Get the Class of the type to operate on.
int	getLength() Return the length in bytes of this opcode, including all arguments.
int	getStackChange() Return the number of stack positions this instruction pushes or pops during its execution.
protected void	readData(DataInput in) Read the arguments for this opcode from the given stream.
void	setClassIndex(int index) Set the constant pool index of the class for this instruction.
ClassInstruction	setClassName(String type) Set the name of the class to operate on.
Instruction	setClassType(Class type) Set the Class of the type to operate on.
protected void	writeData(DataOutput out) Write the arguments for this opcode to the given stream.

Methods inherited from class com.techtrader.modules.tools.bytecode.Instruction

getByteIndex, getName, getOpCode, getOwner, invalidate, setByteIndex, setOpCode

Methods inherited from class java.lang.Object

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

Constructor Detail

ClassInstruction

protected ClassInstruction(Code owner,
                           int opcode)

Method Detail

getClassIndex

public int getClassIndex()

Get the constant pool index of the class for this instruction.

setClassIndex

public void setClassIndex(int index)

Set the constant pool index of the class for this instruction.

setClassName

public ClassInstruction setClassName(String type)

Set the name of the class to operate on.

Returns:

this Instruction, for method chaining

getClassName

public String getClassName()

Get the nam of the class to operate on.

setClassType

public Instruction setClassType(Class type)

Set the Class of the type to operate on.

Returns:

this Instruction, for method chaining

getClassType

public Class getClassType()
                   throws ClassNotFoundException

Get the Class of the type to operate on.

getLength

public int getLength()

Description copied from class: Instruction

Return the length in bytes of this opcode, including all arguments. This method should be overridden by opcodes that take arguments.

Overrides:

getLength in class Instruction

getStackChange

public int getStackChange()

Description copied from class: Instruction

Return the number of stack positions this instruction pushes or pops during its execution.

Overrides:

getStackChange in class Instruction

Tags copied from class: Instruction

Returns:

0 if the stack is not affected by this instruction, a positive number if it pushes onto the stack, and a negative number if it pops from the stack

equals

public boolean equals(Object other)

ClassInstructions are equal if the type they reference is the same, or if the type of either is unset.

Overrides:

equals in class Instruction

copy

protected void copy(Instruction orig)

Overrides:

copy in class Instruction

readData

protected void readData(DataInput in)
                 throws IOException

Description copied from class: Instruction

Read the arguments for this opcode from the given stream. This method should be overridden by opcodes that take arguments.

Overrides:

readData in class Instruction

writeData

protected void writeData(DataOutput out)
                  throws IOException

Description copied from class: Instruction

Write the arguments for this opcode to the given stream. This method should be overridden by opcodes that take arguments.

Overrides:

writeData in class Instruction

acceptVisit

public void acceptVisit(BCVisitor visit)

Description copied from interface: VisitAcceptor

Accept a visit from a BCVisitor, calling the appropriate methods to notify the visitor that it has entered this entity, and to provide it with the proper callbacks for each sub-entity owned by this object.

Overrides:

acceptVisit in class Instruction