public abstract class AdviceAdapter extends GeneratorAdapter implements Opcodes
org.objectweb.asm.MethodAdapter to insert before, after and around
advices in methods and constructors. The behavior for constructors is like this:
| Modifier and Type | Field and Description |
|---|---|
protected int |
methodAccess |
protected String |
methodDesc |
ADD, AND, DIV, EQ, GE, GT, LE, LT, MUL, NE, NEG, OR, REM, SHL, SHR, SUB, USHR, XORfirstLocal, nextLocalmvAALOAD, AASTORE, ACC_ABSTRACT, ACC_ANNOTATION, ACC_BRIDGE, ACC_DEPRECATED, ACC_ENUM, ACC_FINAL, ACC_INTERFACE, ACC_NATIVE, ACC_PRIVATE, ACC_PROTECTED, ACC_PUBLIC, ACC_STATIC, ACC_STRICT, ACC_SUPER, ACC_SYNCHRONIZED, ACC_SYNTHETIC, ACC_TRANSIENT, ACC_VARARGS, ACC_VOLATILE, ACONST_NULL, ALOAD, ANEWARRAY, ARETURN, ARRAYLENGTH, ASTORE, ATHROW, BALOAD, BASTORE, BIPUSH, CALOAD, CASTORE, CHECKCAST, D2F, D2I, D2L, DADD, DALOAD, DASTORE, DCMPG, DCMPL, DCONST_0, DCONST_1, DDIV, DLOAD, DMUL, DNEG, DOUBLE, DREM, DRETURN, DSTORE, DSUB, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, F_APPEND, F_CHOP, F_FULL, F_NEW, F_SAME, F_SAME1, F2D, F2I, F2L, FADD, FALOAD, FASTORE, FCMPG, FCMPL, FCONST_0, FCONST_1, FCONST_2, FDIV, FLOAD, FLOAT, FMUL, FNEG, FREM, FRETURN, FSTORE, FSUB, GETFIELD, GETSTATIC, GOTO, I2B, I2C, I2D, I2F, I2L, I2S, IADD, IALOAD, IAND, IASTORE, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5, ICONST_M1, IDIV, IF_ACMPEQ, IF_ACMPNE, IF_ICMPEQ, IF_ICMPGE, IF_ICMPGT, IF_ICMPLE, IF_ICMPLT, IF_ICMPNE, IFEQ, IFGE, IFGT, IFLE, IFLT, IFNE, IFNONNULL, IFNULL, IINC, ILOAD, IMUL, INEG, INSTANCEOF, INTEGER, INVOKEDYNAMIC, INVOKEDYNAMIC_OWNER, INVOKEINTERFACE, INVOKESPECIAL, INVOKESTATIC, INVOKEVIRTUAL, IOR, IREM, IRETURN, ISHL, ISHR, ISTORE, ISUB, IUSHR, IXOR, JSR, L2D, L2F, L2I, LADD, LALOAD, LAND, LASTORE, LCMP, LCONST_0, LCONST_1, LDC, LDIV, LLOAD, LMUL, LNEG, LONG, LOOKUPSWITCH, LOR, LREM, LRETURN, LSHL, LSHR, LSTORE, LSUB, LUSHR, LXOR, MONITORENTER, MONITOREXIT, MULTIANEWARRAY, NEW, NEWARRAY, NOP, NULL, POP, POP2, PUTFIELD, PUTSTATIC, RET, RETURN, SALOAD, SASTORE, SIPUSH, SWAP, T_BOOLEAN, T_BYTE, T_CHAR, T_DOUBLE, T_FLOAT, T_INT, T_LONG, T_SHORT, TABLESWITCH, TOP, UNINITIALIZED_THIS, V1_1, V1_2, V1_3, V1_4, V1_5, V1_6, V1_7| Modifier | Constructor and Description |
|---|---|
protected |
AdviceAdapter(MethodVisitor mv,
int access,
String name,
String desc)
Creates a new
AdviceAdapter. |
| Modifier and Type | Method and Description |
|---|---|
protected void |
onMethodEnter()
Called at the beginning of the method or after super class class call in
the constructor.
|
protected void |
onMethodExit(int opcode)
Called before explicit exit from the method using either return or throw.
|
void |
visitCode()
Starts the visit of the method's code, if any (i.e.
|
void |
visitFieldInsn(int opcode,
String owner,
String name,
String desc)
Visits a field 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 |
visitLookupSwitchInsn(Label dflt,
int[] keys,
Label[] labels)
Visits a LOOKUPSWITCH instruction.
|
void |
visitMethodInsn(int opcode,
String owner,
String name,
String desc)
Visits a method instruction.
|
void |
visitMultiANewArrayInsn(String desc,
int dims)
Visits a MULTIANEWARRAY instruction.
|
void |
visitTableSwitchInsn(int min,
int max,
Label dflt,
Label[] labels)
Visits a TABLESWITCH instruction.
|
void |
visitTypeInsn(int opcode,
String type)
Visits a type instruction.
|
void |
visitVarInsn(int opcode,
int var)
Visits a local variable instruction.
|
arrayLength, arrayLoad, arrayStore, box, cast, catchException, checkCast, dup, dup2, dup2X1, dup2X2, dupX1, dupX2, endMethod, getField, getLocalType, getStatic, goTo, ifCmp, ifICmp, ifNonNull, ifNull, ifZCmp, iinc, instanceOf, invokeConstructor, invokeDynamic, invokeInterface, invokeStatic, invokeVirtual, loadArg, loadArgArray, loadArgs, loadArgs, loadLocal, loadLocal, loadThis, mark, mark, math, monitorEnter, monitorExit, newArray, newInstance, newLabel, not, pop, pop2, push, push, push, push, push, push, push, putField, putStatic, ret, returnValue, setLocalType, storeArg, storeLocal, storeLocal, swap, swap, tableSwitch, tableSwitch, throwException, throwException, unbox, valueOfnewLocal, newLocalMapping, visitFrame, visitIincInsn, visitLocalVariable, visitMaxsvisitAnnotation, visitAnnotationDefault, visitAttribute, visitEnd, visitLineNumber, visitParameterAnnotation, visitTryCatchBlockprotected int methodAccess
protected String methodDesc
protected AdviceAdapter(MethodVisitor mv, int access, String name, String desc)
AdviceAdapter.public void visitCode()
MethodVisitorvisitCode in interface MethodVisitorvisitCode in class MethodAdapterpublic void visitLabel(Label label)
MethodVisitorvisitLabel in interface MethodVisitorvisitLabel in class MethodAdapterlabel - a Label object.public void visitInsn(int opcode)
MethodVisitorvisitInsn in interface MethodVisitorvisitInsn in class MethodAdapteropcode - 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.public void visitVarInsn(int opcode,
int var)
MethodVisitorvisitVarInsn in interface MethodVisitorvisitVarInsn in class LocalVariablesSorteropcode - 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.public void visitFieldInsn(int opcode,
String owner,
String name,
String desc)
MethodVisitorvisitFieldInsn in interface MethodVisitorvisitFieldInsn in class MethodAdapteropcode - 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).public void visitIntInsn(int opcode,
int operand)
MethodVisitorvisitIntInsn in interface MethodVisitorvisitIntInsn in class MethodAdapteropcode - 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.public void visitLdcInsn(Object cst)
MethodVisitorvisitLdcInsn in interface MethodVisitorvisitLdcInsn in class MethodAdaptercst - 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).public void visitMultiANewArrayInsn(String desc, int dims)
MethodVisitorvisitMultiANewArrayInsn in interface MethodVisitorvisitMultiANewArrayInsn in class MethodAdapterdesc - an array type descriptor (see Type).dims - number of dimensions of the array to allocate.public void visitTypeInsn(int opcode,
String type)
MethodVisitorvisitTypeInsn in interface MethodVisitorvisitTypeInsn in class MethodAdapteropcode - 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).public void visitMethodInsn(int opcode,
String owner,
String name,
String desc)
MethodVisitorvisitMethodInsn in interface MethodVisitorvisitMethodInsn in class MethodAdapteropcode - 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 org.objectweb.asm.Opcodes#INVOKEDYNAMIC_OWNER.name - the method's name.desc - the method's descriptor (see Type).public void visitJumpInsn(int opcode,
Label label)
MethodVisitorvisitJumpInsn in interface MethodVisitorvisitJumpInsn in class MethodAdapteropcode - 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.public void visitLookupSwitchInsn(Label dflt, int[] keys, Label[] labels)
MethodVisitorvisitLookupSwitchInsn in interface MethodVisitorvisitLookupSwitchInsn in class MethodAdapterdflt - beginning of the default handler block.keys - the values of the keys.labels - beginnings of the handler blocks. labels[i] is
the beginning of the handler block for the keys[i] key.public void visitTableSwitchInsn(int min,
int max,
Label dflt,
Label[] labels)
MethodVisitorvisitTableSwitchInsn in interface MethodVisitorvisitTableSwitchInsn in class MethodAdaptermin - the minimum key value.max - the maximum key value.dflt - beginning of the default handler block.labels - beginnings of the handler blocks. labels[i] is
the beginning of the handler block for the min + i key.protected void onMethodEnter()
protected void onMethodExit(int opcode)
public void onMethodExit(int opcode) {
if(opcode==RETURN) {
visitInsn(ACONST_NULL);
} else if(opcode==ARETURN || opcode==ATHROW) {
dup();
} else {
if(opcode==LRETURN || opcode==DRETURN) {
dup2();
} else {
dup();
}
box(Type.getReturnType(this.methodDesc));
}
visitIntInsn(SIPUSH, opcode);
visitMethodInsn(INVOKESTATIC, owner, "onExit", "(Ljava/lang/Object;I)V");
}
// an actual call back method
public static void onExit(Object param, int opcode) {
...
opcode - one of the RETURN, IRETURN, FRETURN, ARETURN, LRETURN,
DRETURN or ATHROWCopyright © 2018 Oracle. All Rights Reserved.