Package javassist.bytecode

Class ClassFileWriter.MethodWriter

java.lang.Object

javassist.bytecode.ClassFileWriter.MethodWriter

Enclosing class:

ClassFileWriter

public static final class ClassFileWriter.MethodWriter
extends Object

Method.

Method Summary

Modifier and Type	Method	Description
void	add(int b)	Appends an 8bit value of bytecode.
void	add16(int b)	Appends a 16bit value of bytecode.
void	add32(int b)	Appends a 32bit value of bytecode.
void	addCatch(int startPc, int endPc, int handlerPc, int catchType)	Appends an exception_table entry to the Code_attribute.
void	addInvoke(int opcode, String targetClass, String methodName, String descriptor)	Appends a invokevirtual, inovkespecial, or invokestatic bytecode.
void	begin(int accessFlags, int name, int descriptor, int[] exceptions, ClassFileWriter.AttributeWriter aw)	Starts adding a new method.
void	begin(int accessFlags, String name, String descriptor, String[] exceptions, ClassFileWriter.AttributeWriter aw)	Starts Adding a new method.
void	codeEnd(int maxStack, int maxLocals)	Ends appending bytecode.
void	end(StackMapTable.Writer smap, ClassFileWriter.AttributeWriter aw)	Ends adding a new method.
int	size()	Returns the length of the bytecode that has been added so far.

Methods inherited from class java.lang.Object

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

Method Details

begin

public void begin(int accessFlags,
 String name,
 String descriptor,
 String[] exceptions,
 ClassFileWriter.AttributeWriter aw)

Starts Adding a new method.

Parameters:

accessFlags - access flags.

name - the method name.

descriptor - the method signature.

exceptions - throws clause. It may be null. The class names must be the JVM-internal representations like java/lang/Exception.

aw - attributes to the Method_info.

begin

public void begin(int accessFlags,
 int name,
 int descriptor,
 int[] exceptions,
 ClassFileWriter.AttributeWriter aw)

Starts adding a new method.

Parameters:

accessFlags - access flags.

name - the method name. an index indicating its CONSTANT_Utf8_info.

descriptor - the field type. an index indicating its CONSTANT_Utf8_info.

exceptions - throws clause. indexes indicating CONSTANT_Class_infos. It may be null.

aw - attributes to the Method_info.

add

public void add(int b)

Appends an 8bit value of bytecode.

See Also:

• Opcode

add16

public void add16(int b)

Appends a 16bit value of bytecode.

add32

public void add32(int b)

Appends a 32bit value of bytecode.

addInvoke

public void addInvoke(int opcode,
 String targetClass,
 String methodName,
 String descriptor)

Appends a invokevirtual, inovkespecial, or invokestatic bytecode.

See Also:

• Opcode

codeEnd

public void codeEnd(int maxStack,
 int maxLocals)

Ends appending bytecode.

addCatch

public void addCatch(int startPc,
 int endPc,
 int handlerPc,
 int catchType)

Appends an exception_table entry to the Code_attribute. This method is available only after the codeEnd method is called.

Parameters:

catchType - an index indicating a CONSTANT_Class_info.

end

public void end(StackMapTable.Writer smap,
 ClassFileWriter.AttributeWriter aw)

Ends adding a new method. The add method must be called before the end method is called.

Parameters:

smap - a stack map table. may be null.

aw - attributes to the Code_attribute. may be null.

size

public int size()

Returns the length of the bytecode that has been added so far.

Returns:

the length in bytes.

Since:

3.19