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Java Source Code / Java Documentation » Development » Retrotranslator » net.sf.retrotranslator.runtime.asm 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


net.sf.retrotranslator.runtime.asm.MethodVisitor

All known Subclasses:   net.sf.retrotranslator.runtime.asm.MethodWriter,  net.sf.retrotranslator.runtime.asm.MethodAdapter,  net.sf.retrotranslator.transformer.AbstractMethodVisitor,  net.sf.retrotranslator.runtime.impl.EmptyVisitor,
MethodVisitor
public interface MethodVisitor (Code)
A visitor to visit a Java method. The methods of this interface must be called in the following order: [ visitAnnotationDefault ] ( visitAnnotation | visitParameterAnnotation | visitAttribute )* [ visitCode ( visitXInsn | visitLabel | visitTryCatchBlock | visitLocalVariable | visitLineNumber)* visitMaxs ] visitEnd. In addition, the visitXInsn and visitLabel methods must be called in the sequential order of the bytecode instructions of the visited code, and the visitLocalVariable and visitLineNumber methods must be called after the labels passed as arguments have been visited.
author:
   Eric Bruneton




Method Summary
 AnnotationVisitorvisitAnnotation(String desc, boolean visible)
     Visits an annotation of this method.
Parameters:
  desc - the class descriptor of the annotation class.
Parameters:
  visible - true if the annotation is visible at runtime.
 AnnotationVisitorvisitAnnotationDefault()
     Visits the default value of this annotation interface method. a non null visitor to the visit the actual default value of thisannotation interface method.
 voidvisitAttribute(Attribute attr)
     Visits a non standard attribute of this method.
 voidvisitCode()
     Starts the visit of the method's code, if any (i.e.
 voidvisitEnd()
     Visits the end of the method.
 voidvisitFieldInsn(int opcode, String owner, String name, String desc)
     Visits a field instruction.
 voidvisitIincInsn(int var, int increment)
     Visits an IINC instruction.
 voidvisitInsn(int opcode)
     Visits a zero operand instruction.
Parameters:
  opcode - the opcode of the instruction to be visited.
 voidvisitIntInsn(int opcode, int operand)
     Visits an instruction with a single int operand.
Parameters:
  opcode - the opcode of the instruction to be visited.
 voidvisitJumpInsn(int opcode, Label label)
     Visits a jump instruction.
 voidvisitLabel(Label label)
     Visits a label.
 voidvisitLdcInsn(Object cst)
     Visits a LDC instruction.
Parameters:
  cst - the constant to be loaded on the stack.
 voidvisitLineNumber(int line, Label start)
     Visits a line number declaration.
Parameters:
  line - a line number.
 voidvisitLocalVariable(String name, String desc, String signature, Label start, Label end, int index)
     Visits a local variable declaration.
Parameters:
  name - the name of a local variable.
Parameters:
  desc - the type descriptor of this local variable.
Parameters:
  signature - the type signature of this local variable.
 voidvisitLookupSwitchInsn(Label dflt, int keys, Label labels)
     Visits a LOOKUPSWITCH instruction.
Parameters:
  dflt - beginning of the default handler block.
Parameters:
  keys - the values of the keys.
Parameters:
  labels - beginnings of the handler blocks.
 voidvisitMaxs(int maxStack, int maxLocals)
     Visits the maximum stack size and the maximum number of local variables of the method.
 voidvisitMethodInsn(int opcode, String owner, String name, String desc)
     Visits a method instruction.
 voidvisitMultiANewArrayInsn(String desc, int dims)
     Visits a MULTIANEWARRAY instruction.
 AnnotationVisitorvisitParameterAnnotation(int parameter, String desc, boolean visible)
     Visits an annotation of a parameter this method.
Parameters:
  parameter - the parameter index.
Parameters:
  desc - the class descriptor of the annotation class.
Parameters:
  visible - true if the annotation is visible at runtime.
 voidvisitTableSwitchInsn(int min, int max, Label dflt, Label labels)
     Visits a TABLESWITCH instruction.
Parameters:
  min - the minimum key value.
Parameters:
  max - the maximum key value.
Parameters:
  dflt - beginning of the default handler block.
Parameters:
  labels - beginnings of the handler blocks.
 voidvisitTryCatchBlock(Label start, Label end, Label handler, String type)
     Visits a try catch block.
 voidvisitTypeInsn(int opcode, String desc)
     Visits a type instruction.
 voidvisitVarInsn(int opcode, int var)
     Visits a local variable instruction.



Method Detail
visitAnnotation
AnnotationVisitor visitAnnotation(String desc, boolean visible)(Code)
Visits an annotation of this method.
Parameters:
  desc - the class descriptor of the annotation class.
Parameters:
  visible - true if the annotation is visible at runtime. a non null visitor to visit the annotation values.



visitAnnotationDefault
AnnotationVisitor visitAnnotationDefault()(Code)
Visits the default value of this annotation interface method. a non null visitor to the visit the actual default value of thisannotation interface method. The 'name' parameters passed to themethods of this annotation visitor are ignored. Moreover, exaclyone visit method must be called on this annotation visitor,followed by visitEnd.



visitAttribute
void visitAttribute(Attribute attr)(Code)
Visits a non standard attribute of this method.
Parameters:
  attr - an attribute.



visitCode
void visitCode()(Code)
Starts the visit of the method's code, if any (i.e. non abstract method).



visitEnd
void visitEnd()(Code)
Visits the end of the method. This method, which is the last one to be called, is used to inform the visitor that all the annotations and attributes of the method have been visited.



visitFieldInsn
void visitFieldInsn(int opcode, String owner, String name, String desc)(Code)
Visits a field instruction. A field instruction is an instruction that loads or stores the value of a field of an object.
Parameters:
  opcode - the opcode of the type instruction to be visited. Thisopcode is either GETSTATIC, PUTSTATIC, GETFIELD or PUTFIELD.
Parameters:
  owner - the internal name of the field's owner class (see Type.getInternalName getInternalName).
Parameters:
  name - the field's name.
Parameters:
  desc - the field's descriptor (see Type Type).



visitIincInsn
void visitIincInsn(int var, int increment)(Code)
Visits an IINC instruction.
Parameters:
  var - index of the local variable to be incremented.
Parameters:
  increment - amount to increment the local variable by.



visitInsn
void visitInsn(int opcode)(Code)
Visits a zero operand instruction.
Parameters:
  opcode - the opcode of the instruction to be visited. This opcode iseither NOP, ACONST_NULL, ICONST_M1, ICONST_0, ICONST_1, ICONST_2,ICONST_3, ICONST_4, ICONST_5, LCONST_0, LCONST_1, FCONST_0,FCONST_1, FCONST_2, DCONST_0, DCONST_1, IALOAD, LALOAD, FALOAD,DALOAD, AALOAD, BALOAD, CALOAD, SALOAD, IASTORE, LASTORE, FASTORE,DASTORE, AASTORE, BASTORE, CASTORE, SASTORE, POP, POP2, DUP,DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, SWAP, IADD, LADD, FADD,DADD, ISUB, LSUB, FSUB, DSUB, IMUL, LMUL, FMUL, DMUL, IDIV, LDIV,FDIV, DDIV, IREM, LREM, FREM, DREM, INEG, LNEG, FNEG, DNEG, ISHL,LSHL, ISHR, LSHR, IUSHR, LUSHR, IAND, LAND, IOR, LOR, IXOR, LXOR,I2L, I2F, I2D, L2I, L2F, L2D, F2I, F2L, F2D, D2I, D2L, D2F, I2B,I2C, I2S, LCMP, FCMPL, FCMPG, DCMPL, DCMPG, IRETURN, LRETURN,FRETURN, DRETURN, ARETURN, RETURN, ARRAYLENGTH, ATHROW,MONITORENTER, or MONITOREXIT.



visitIntInsn
void visitIntInsn(int opcode, int operand)(Code)
Visits an instruction with a single int operand.
Parameters:
  opcode - the opcode of the instruction to be visited. This opcode iseither BIPUSH, SIPUSH or NEWARRAY.
Parameters:
  operand - the operand of the instruction to be visited.
When opcode is BIPUSH, operand value should be betweenByte.MIN_VALUE and Byte.MAX_VALUE.
When opcode is SIPUSH, operand value should be betweenShort.MIN_VALUE and Short.MAX_VALUE.
When opcode is NEWARRAY, operand value should be one ofOpcodes.T_BOOLEAN, Opcodes.T_CHAR,Opcodes.T_FLOAT, Opcodes.T_DOUBLE,Opcodes.T_BYTE, Opcodes.T_SHORT,Opcodes.T_INT or Opcodes.T_LONG.



visitJumpInsn
void visitJumpInsn(int opcode, Label label)(Code)
Visits a jump instruction. A jump instruction is an instruction that may jump to another instruction.
Parameters:
  opcode - the opcode of the type instruction to be visited. Thisopcode is either IFEQ, IFNE, IFLT, IFGE, IFGT, IFLE, IF_ICMPEQ,IF_ICMPNE, IF_ICMPLT, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ACMPEQ,IF_ACMPNE, GOTO, JSR, IFNULL or IFNONNULL.
Parameters:
  label - the operand of the instruction to be visited. This operandis a label that designates the instruction to which the jumpinstruction may jump.



visitLabel
void visitLabel(Label label)(Code)
Visits a label. A label designates the instruction that will be visited just after it.
Parameters:
  label - a Label Label object.



visitLdcInsn
void visitLdcInsn(Object cst)(Code)
Visits a LDC instruction.
Parameters:
  cst - the constant to be loaded on the stack. This parameter must bea non null Integer, a Float, a Long, aDouble a String (or a Type for.class constants, for classes whose version is 49.0 ormore).



visitLineNumber
void visitLineNumber(int line, Label start)(Code)
Visits a line number declaration.
Parameters:
  line - a line number. This number refers to the source file fromwhich the class was compiled.
Parameters:
  start - the first instruction corresponding to this line number.
throws:
  IllegalArgumentException - if start has not already beenvisited by this visitor (by the MethodVisitor.visitLabel visitLabelmethod).



visitLocalVariable
void visitLocalVariable(String name, String desc, String signature, Label start, Label end, int index)(Code)
Visits a local variable declaration.
Parameters:
  name - the name of a local variable.
Parameters:
  desc - the type descriptor of this local variable.
Parameters:
  signature - the type signature of this local variable. May benull if the local variable type does not use generictypes.
Parameters:
  start - the first instruction corresponding to the scope of thislocal variable (inclusive).
Parameters:
  end - the last instruction corresponding to the scope of this localvariable (exclusive).
Parameters:
  index - the local variable's index.
throws:
  IllegalArgumentException - if one of the labels has not alreadybeen visited by this visitor (by theMethodVisitor.visitLabel visitLabel method).



visitLookupSwitchInsn
void visitLookupSwitchInsn(Label dflt, int keys, Label labels)(Code)
Visits a LOOKUPSWITCH instruction.
Parameters:
  dflt - beginning of the default handler block.
Parameters:
  keys - the values of the keys.
Parameters:
  labels - beginnings of the handler blocks. labels[i] isthe beginning of the handler block for the keys[i] key.



visitMaxs
void visitMaxs(int maxStack, int maxLocals)(Code)
Visits the maximum stack size and the maximum number of local variables of the method.
Parameters:
  maxStack - maximum stack size of the method.
Parameters:
  maxLocals - maximum number of local variables for the method.



visitMethodInsn
void visitMethodInsn(int opcode, String owner, String name, String desc)(Code)
Visits a method instruction. A method instruction is an instruction that invokes a method.
Parameters:
  opcode - the opcode of the type instruction to be visited. Thisopcode is either INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC orINVOKEINTERFACE.
Parameters:
  owner - the internal name of the method's owner class (see Type.getInternalName getInternalName).
Parameters:
  name - the method's name.
Parameters:
  desc - the method's descriptor (see Type Type).



visitMultiANewArrayInsn
void visitMultiANewArrayInsn(String desc, int dims)(Code)
Visits a MULTIANEWARRAY instruction.
Parameters:
  desc - an array type descriptor (see Type Type).
Parameters:
  dims - number of dimensions of the array to allocate.



visitParameterAnnotation
AnnotationVisitor visitParameterAnnotation(int parameter, String desc, boolean visible)(Code)
Visits an annotation of a parameter this method.
Parameters:
  parameter - the parameter index.
Parameters:
  desc - the class descriptor of the annotation class.
Parameters:
  visible - true if the annotation is visible at runtime. a non null visitor to visit the annotation values.



visitTableSwitchInsn
void visitTableSwitchInsn(int min, int max, Label dflt, Label labels)(Code)
Visits a TABLESWITCH instruction.
Parameters:
  min - the minimum key value.
Parameters:
  max - the maximum key value.
Parameters:
  dflt - beginning of the default handler block.
Parameters:
  labels - beginnings of the handler blocks. labels[i] isthe beginning of the handler block for the min + i key.



visitTryCatchBlock
void visitTryCatchBlock(Label start, Label end, Label handler, String type)(Code)
Visits a try catch block.
Parameters:
  start - beginning of the exception handler's scope (inclusive).
Parameters:
  end - end of the exception handler's scope (exclusive).
Parameters:
  handler - beginning of the exception handler's code.
Parameters:
  type - internal name of the type of exceptions handled by thehandler, or null to catch any exceptions (for "finally"blocks).



visitTypeInsn
void visitTypeInsn(int opcode, String desc)(Code)
Visits a type instruction. A type instruction is an instruction that takes a type descriptor as parameter.
Parameters:
  opcode - the opcode of the type instruction to be visited. Thisopcode is either NEW, ANEWARRAY, CHECKCAST or INSTANCEOF.
Parameters:
  desc - the operand of the instruction to be visited. This operand ismust be a fully qualified class name in internal form, or the typedescriptor of an array type (see Type Type).



visitVarInsn
void visitVarInsn(int opcode, int var)(Code)
Visits a local variable instruction. A local variable instruction is an instruction that loads or stores the value of a local variable.
Parameters:
  opcode - the opcode of the local variable instruction to be visited.This opcode is either ILOAD, LLOAD, FLOAD, DLOAD, ALOAD, ISTORE,LSTORE, FSTORE, DSTORE, ASTORE or RET.
Parameters:
  var - the operand of the instruction to be visited. This operand isthe index of a local variable.



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