Class RemappingMethodAdapter

java.lang.Object

org.objectweb.asm.MethodAdapter

org.objectweb.asm.commons.LocalVariablesSorter

org.objectweb.asm.commons.RemappingMethodAdapter

All Implemented Interfaces:

MethodVisitor

public class RemappingMethodAdapter
extends LocalVariablesSorter

A MethodAdapter for type mapping.

Author:

Eugene Kuleshov

Field Summary

Fields

Modifier and Type	Field	Description
protected final Remapper	remapper

Fields inherited from class LocalVariablesSorter

firstLocal, nextLocal

Fields inherited from class MethodAdapter

mv

Constructor Summary

Constructors

Constructor	Description
RemappingMethodAdapter(int access, String desc, MethodVisitor mv, Remapper renamer)

Method Summary

Modifier and Type	Method	Description
AnnotationVisitor	visitAnnotation(String desc, boolean visible)	Visits an annotation of this method.
AnnotationVisitor	visitAnnotationDefault()	Visits the default value of this annotation interface method.
void	visitFieldInsn(int opcode, String owner, String name, String desc)	Visits a field instruction.
void	visitFrame(int type, int nLocal, Object[] local, int nStack, Object[] stack)	Visits the current state of the local variables and operand stack elements.
void	visitLdcInsn(Object cst)	Visits a LDC instruction.
void	visitLocalVariable(String name, String desc, String signature, Label start, Label end, int index)	Visits a local variable declaration.
void	visitMethodInsn(int opcode, String owner, String name, String desc)	Visits a method instruction.
void	visitMultiANewArrayInsn(String desc, int dims)	Visits a MULTIANEWARRAY instruction.
AnnotationVisitor	visitParameterAnnotation(int parameter, String desc, boolean visible)	Visits an annotation of a parameter this method.
void	visitTryCatchBlock(Label start, Label end, Label handler, String type)	Visits a try catch block.
void	visitTypeInsn(int opcode, String type)	Visits a type instruction.

Methods inherited from class LocalVariablesSorter

newLocal, newLocalMapping, setLocalType, visitIincInsn, visitMaxs, visitVarInsn

Methods inherited from class MethodAdapter

visitAttribute, visitCode, visitEnd, visitInsn, visitIntInsn, visitJumpInsn, visitLabel, visitLineNumber, visitLookupSwitchInsn, visitTableSwitchInsn

Methods inherited from class Object

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

Field Details

remapper

protected final Remapper remapper

Constructor Details

RemappingMethodAdapter

public RemappingMethodAdapter(int access,
 String desc,
 MethodVisitor mv,
 Remapper renamer)

Method Details

visitFieldInsn

public void visitFieldInsn(int opcode,
 String owner,
 String name,
 String desc)

Description copied from interface: MethodVisitor

Visits a field instruction. A field instruction is an instruction that loads or stores the value of a field of an object.

Specified by:

visitFieldInsn in interface MethodVisitor

Overrides:

visitFieldInsn in class MethodAdapter

Parameters:

opcode - the opcode of the type instruction to be visited. This opcode is either GETSTATIC, PUTSTATIC, GETFIELD or PUTFIELD.

owner - the internal name of the field's owner class (see getInternalName).

name - the field's name.

desc - the field's descriptor (see Type).

visitMethodInsn

public void visitMethodInsn(int opcode,
 String owner,
 String name,
 String desc)

Description copied from interface: MethodVisitor

Visits a method instruction. A method instruction is an instruction that invokes a method.

Specified by:

visitMethodInsn in interface MethodVisitor

Overrides:

visitMethodInsn in class MethodAdapter

Parameters:

opcode - the opcode of the type instruction to be visited. This opcode is either INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC, INVOKEINTERFACE or INVOKEDYNAMIC.

owner - the internal name of the method's owner class (see getInternalName) or Opcodes.INVOKEDYNAMIC_OWNER.

name - the method's name.

desc - the method's descriptor (see Type).

visitTypeInsn

public void visitTypeInsn(int opcode,
 String type)

Description copied from interface: MethodVisitor

Visits a type instruction. A type instruction is an instruction that takes the internal name of a class as parameter.

Specified by:

visitTypeInsn in interface MethodVisitor

Overrides:

visitTypeInsn in class MethodAdapter

Parameters:

opcode - the opcode of the type instruction to be visited. This opcode is either NEW, ANEWARRAY, CHECKCAST or INSTANCEOF.

type - the operand of the instruction to be visited. This operand must be the internal name of an object or array class (see getInternalName).

visitLdcInsn

public void visitLdcInsn(Object cst)

Description copied from interface: MethodVisitor

Visits a LDC instruction.

Specified by:

visitLdcInsn in interface MethodVisitor

Overrides:

visitLdcInsn in class MethodAdapter

Parameters:

cst - the constant to be loaded on the stack. This parameter must be a non null Integer, a Float, a Long, a Double a String (or a Type for .class constants, for classes whose version is 49.0 or more).

visitMultiANewArrayInsn

public void visitMultiANewArrayInsn(String desc,
 int dims)

Description copied from interface: MethodVisitor

Visits a MULTIANEWARRAY instruction.

Specified by:

visitMultiANewArrayInsn in interface MethodVisitor

Overrides:

visitMultiANewArrayInsn in class MethodAdapter

Parameters:

desc - an array type descriptor (see Type).

dims - number of dimensions of the array to allocate.

visitTryCatchBlock

public void visitTryCatchBlock(Label start,
 Label end,
 Label handler,
 String type)

Description copied from interface: MethodVisitor

Visits a try catch block.

Specified by:

visitTryCatchBlock in interface MethodVisitor

Overrides:

visitTryCatchBlock in class MethodAdapter

Parameters:

start - beginning of the exception handler's scope (inclusive).

end - end of the exception handler's scope (exclusive).

handler - beginning of the exception handler's code.

type - internal name of the type of exceptions handled by the handler, or null to catch any exceptions (for "finally" blocks).

visitLocalVariable

public void visitLocalVariable(String name,
 String desc,
 String signature,
 Label start,
 Label end,
 int index)

Description copied from interface: MethodVisitor

Visits a local variable declaration.

Specified by:

visitLocalVariable in interface MethodVisitor

Overrides:

visitLocalVariable in class LocalVariablesSorter

Parameters:

name - the name of a local variable.

desc - the type descriptor of this local variable.

signature - the type signature of this local variable. May be null if the local variable type does not use generic types.

start - the first instruction corresponding to the scope of this local variable (inclusive).

end - the last instruction corresponding to the scope of this local variable (exclusive).

index - the local variable's index.

visitAnnotation

public AnnotationVisitor visitAnnotation(String desc,
 boolean visible)

Description copied from interface: MethodVisitor

Visits an annotation of this method.

Specified by:

visitAnnotation in interface MethodVisitor

Overrides:

visitAnnotation in class MethodAdapter

Parameters:

desc - the class descriptor of the annotation class.

visible - true if the annotation is visible at runtime.

Returns:

a visitor to visit the annotation values, or null if this visitor is not interested in visiting this annotation.

visitAnnotationDefault

public AnnotationVisitor visitAnnotationDefault()

Description copied from interface: MethodVisitor

Visits the default value of this annotation interface method.

Specified by:

visitAnnotationDefault in interface MethodVisitor

Overrides:

visitAnnotationDefault in class MethodAdapter

Returns:

a visitor to the visit the actual default value of this annotation interface method, or null if this visitor is not interested in visiting this default value. The 'name' parameters passed to the methods of this annotation visitor are ignored. Moreover, exacly one visit method must be called on this annotation visitor, followed by visitEnd.

visitParameterAnnotation

public AnnotationVisitor visitParameterAnnotation(int parameter,
 String desc,
 boolean visible)

Description copied from interface: MethodVisitor

Visits an annotation of a parameter this method.

Specified by:

visitParameterAnnotation in interface MethodVisitor

Overrides:

visitParameterAnnotation in class MethodAdapter

Parameters:

parameter - the parameter index.

desc - the class descriptor of the annotation class.

visible - true if the annotation is visible at runtime.

Returns:

a visitor to visit the annotation values, or null if this visitor is not interested in visiting this annotation.

visitFrame

public void visitFrame(int type,
 int nLocal,
 Object[] local,
 int nStack,
 Object[] stack)

Description copied from interface: MethodVisitor

Visits the current state of the local variables and operand stack elements. This method must(*) be called just before any instruction i that follows an unconditional branch instruction such as GOTO or THROW, that is the target of a jump instruction, or that starts an exception handler block. The visited 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.

Packed frames are basically "deltas" from the state of the previous frame (very first frame is implicitly defined by the method's parameters and access flags):

• Opcodes.F_SAME representing frame with exactly the same locals as the previous frame and with the empty stack.
• Opcodes.F_SAME1 representing frame with exactly the same locals as the previous frame and with single value on the stack (nStack is 1 and stack[0] contains value for the type of the stack item).
• Opcodes.F_APPEND representing frame with current locals are the same as the locals in the previous frame, except that additional locals are defined (nLocal is 1, 2 or 3 and local elements contains values representing added types).
• Opcodes.F_CHOP representing frame with current locals are the same as the locals in the previous frame, except that the last 1-3 locals are absent and with the empty stack (nLocals is 1, 2 or 3).
• Opcodes.F_FULL representing complete frame data.

Specified by:

visitFrame in interface MethodVisitor

Overrides:

visitFrame in class LocalVariablesSorter

Parameters:

type - the type of this stack map 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 - the number of local variables in the visited frame.

local - the local variable types in this frame. This array must not be modified. Primitive types are represented by Opcodes.TOP, Opcodes.INTEGER, Opcodes.FLOAT, Opcodes.LONG, Opcodes.DOUBLE,Opcodes.NULL or Opcodes.UNINITIALIZED_THIS (long and double are represented by a single element). Reference types are represented by String objects (representing internal names), and uninitialized types by Label objects (this label designates the NEW instruction that created this uninitialized value).

nStack - the number of operand stack elements in the visited frame.

stack - the operand stack types in this frame. This array must not be modified. Its content has the same format as the "local" array.