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public interface MethodVisitor
A visitor to visit a Java method. The methods of this interface must be called in the following order: [ visitAnnotationDefault ] ( visitAnnotation | visitParameterAnnotation | visitAttribute )* [ visitCode ( visitFrame | 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, visitTryCatchBlock must be called before the labels passed as arguments have been visited, and the visitLocalVariable and visitLineNumber methods must be called after the labels passed as arguments have been visited.
Method Summary | |
---|---|
void |
visitEnd()
Visits the end of the method. |
void |
visitFieldInsn(int opcode,
String owner,
String name,
String desc)
Visits a field instruction. |
void |
visitIincInsn(int var,
int increment)
Visits an IINC instruction. |
void |
visitInsn(int opcode)
Visits a zero operand instruction. |
void |
visitIntInsn(int opcode,
int operand)
Visits an instruction with a single int operand. |
void |
visitJumpInsn(int opcode,
Label label)
Visits a jump instruction. |
void |
visitLabel(Label label)
Visits a label. |
void |
visitLdcInsn(Object cst)
Visits a LDC instruction. |
void |
visitMaxs(int maxStack,
int maxLocals)
Visits the maximum stack size and the maximum number of local variables of the method. |
void |
visitMethodInsn(int opcode,
String owner,
String name,
String desc)
Visits a method instruction. |
void |
visitTypeInsn(int opcode,
String type)
Visits a type instruction. |
void |
visitVarInsn(int opcode,
int var)
Visits a local variable instruction. |
Method Detail |
---|
void visitInsn(int opcode)
opcode
- the opcode of the instruction to be visited. This opcode is either 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.void visitIntInsn(int opcode, int operand)
opcode
- the opcode of the instruction to be visited. This opcode is either BIPUSH, SIPUSH or NEWARRAY.operand
- the operand of the instruction to be visited.Opcodes.T_BOOLEAN
, Opcodes.T_CHAR
,
Opcodes.T_FLOAT
, Opcodes.T_DOUBLE
, Opcodes.T_BYTE
, Opcodes.T_SHORT
,
Opcodes.T_INT
or Opcodes.T_LONG
.void visitVarInsn(int opcode, int var)
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.var
- the operand of the instruction to be visited. This operand is the index of a local variable.void visitTypeInsn(int opcode, String type)
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
).void visitFieldInsn(int opcode, String owner, String name, String desc)
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
).void visitMethodInsn(int opcode, String owner, String name, String desc)
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
).void visitJumpInsn(int opcode, Label label)
opcode
- the opcode of the type instruction to be visited. This opcode 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.label
- the operand of the instruction to be visited. This operand is a label that designates the
instruction to which the jump instruction may jump.void visitLabel(Label label)
label
- a Label
object.void visitLdcInsn(Object cst)
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).void visitIincInsn(int var, int increment)
var
- index of the local variable to be incremented.increment
- amount to increment the local variable by.void visitMaxs(int maxStack, int maxLocals)
maxStack
- maximum stack size of the method.maxLocals
- maximum number of local variables for the method.void visitEnd()
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