com.techtrader.modules.tools.bytecode
Class FieldInstruction

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

Direct Known Subclasses:

GetFieldInstruction, PutFieldInstruction

public abstract class FieldInstruction

extends Instruction

Represents an instruction that takes as an argument a field to operate on. Examples include GETFIELD, GETSTATIC, SETFIELD, SETSTATIC.

Author:

Abe White

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

_byteIndex, _opcode, _opcodeTypes, _owner

Constructor Summary

protected

FieldInstruction(Code owner, int opcode)

Method Summary

protected void	copy(Instruction orig)
boolean	equals(Object other) FieldInstructions are equal if the field they reference is the same, or if the field of either is unset.
BCField	getField() If the field is a member of the current class, then this method will retrieve the BCField object for it; otherwise it will return null.
int	getFieldIndex() Get the index of the ComplexEntry in the constant pool describing the field to operate on.
String	getFieldName() Get the nam of the field to operate on.
Class	getFieldOwnerType() Get the type of the field.
String	getFieldOwnerTypeName() Get the type of the field.
Class	getFieldType() Get the type of the field.
String	getFieldTypeName() Get the type of the field.
int	getLength() Return the length in bytes of this opcode, including all arguments.
boolean	isFieldInCurrentClass() Return true if the field is a member of the current class.
protected void	readData(DataInput in) Read the arguments for this opcode from the given stream.
FieldInstruction	setField(BCField field) Set the field to operate on.
FieldInstruction	setField(Field field) Set the field to operate on.
FieldInstruction	setField(String name, Class type, Class ownerType) Set the field to operate on.
FieldInstruction	setField(String name, Class type, String ownerType) Set the field to operate on.
FieldInstruction	setField(String name, String type, String ownerType) Set the field to operate on.
void	setFieldIndex(int index) Set the index of the ComplexEntry in the constant pool describing the field to operate on.
FieldInstruction	setFieldName(String name) Change the field name.
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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

FieldInstruction

protected FieldInstruction(Code owner,
                           int opcode)

Method Detail

getFieldIndex

public int getFieldIndex()

Get the index of the ComplexEntry in the constant pool describing the field to operate on.

setFieldIndex

public void setFieldIndex(int index)

Set the index of the ComplexEntry in the constant pool describing the field to operate on.

setField

public FieldInstruction setField(BCField field)

Set the field to operate on.

Returns:

this Instruction, for method chaining

setField

public FieldInstruction setField(Field field)

Set the field to operate on.

Returns:

this Instruction, for method chaining

setField

public FieldInstruction setField(String name,
                                 String type,
                                 String ownerType)

Set the field to operate on.

Returns:

this Instruction, for method chaining

setField

public FieldInstruction setField(String name,
                                 Class type,
                                 String ownerType)

Set the field to operate on.

Returns:

this Instruction, for method chaining

setField

public FieldInstruction setField(String name,
                                 Class type,
                                 Class ownerType)

Set the field to operate on.

Returns:

this Instruction, for method chaining

setFieldName

public FieldInstruction setFieldName(String name)

Change the field name.

Returns:

this Instruction, for method chaining

isFieldInCurrentClass

public boolean isFieldInCurrentClass()

Return true if the field is a member of the current class.

getField

public BCField getField()

If the field is a member of the current class, then this method will retrieve the BCField object for it; otherwise it will return null.

getFieldName

public String getFieldName()

Get the nam of the field to operate on.

getFieldTypeName

public String getFieldTypeName()

Get the type of the field.

getFieldType

public Class getFieldType()
                   throws ClassNotFoundException

Get the type of the field.

getFieldOwnerTypeName

public String getFieldOwnerTypeName()

Get the type of the field.

getFieldOwnerType

public Class getFieldOwnerType()
                        throws ClassNotFoundException

Get the type of the field.

equals

public boolean equals(Object other)

FieldInstructions are equal if the field they reference is the same, or if the field of either is unset.

Overrides:

equals in class Instruction

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

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