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java.lang.Objectorg.objectweb.asm.MethodAdapter
org.objectweb.asm.commons.LocalVariablesSorter
org.objectweb.asm.commons.GeneratorAdapter
org.objectweb.asm.commons.AdviceAdapter
public abstract class AdviceAdapter
A MethodAdapter to insert before, after and around
advices in methods and constructors.
The behavior for constructors is like this:
| Field Summary | |
|---|---|
protected int |
methodAccess
|
protected String |
methodDesc
|
| Fields inherited from class org.objectweb.asm.commons.GeneratorAdapter |
|---|
ADD, AND, DIV, EQ, GE, GT, LE, LT, MUL, NE, NEG, OR, REM, SHL, SHR, SUB, USHR, XOR |
| Fields inherited from class org.objectweb.asm.commons.LocalVariablesSorter |
|---|
firstLocal, nextLocal |
| Fields inherited from class org.objectweb.asm.MethodAdapter |
|---|
mv |
| Constructor Summary | |
|---|---|
protected |
AdviceAdapter(MethodVisitor mv,
int access,
String name,
String desc)
Creates a new AdviceAdapter. |
| Method Summary | |
|---|---|
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. |
| Methods inherited from class org.objectweb.asm.commons.GeneratorAdapter |
|---|
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, valueOf |
| Methods inherited from class org.objectweb.asm.commons.LocalVariablesSorter |
|---|
newLocal, newLocalMapping, visitFrame, visitIincInsn, visitLocalVariable, visitMaxs |
| Methods inherited from class org.objectweb.asm.MethodAdapter |
|---|
visitAnnotation, visitAnnotationDefault, visitAttribute, visitEnd, visitLineNumber, visitParameterAnnotation, visitTryCatchBlock |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
|---|
protected int methodAccess
protected String methodDesc
| Constructor Detail |
|---|
protected AdviceAdapter(MethodVisitor mv,
int access,
String name,
String desc)
AdviceAdapter.
mv - the method visitor to which this adapter delegates calls.access - the method's access flags (see Opcodes).name - the method's name.desc - the method's descriptor (see Type).| Method Detail |
|---|
public void visitCode()
MethodVisitor
visitCode in interface MethodVisitorvisitCode in class MethodAdapterpublic void visitLabel(Label label)
MethodVisitor
visitLabel in interface MethodVisitorvisitLabel in class MethodAdapterlabel - a Label object.public void visitInsn(int opcode)
MethodVisitor
visitInsn 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)
MethodVisitor
visitVarInsn 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)
MethodVisitor
visitFieldInsn 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)
MethodVisitor
visitIntInsn 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)
MethodVisitor
visitLdcInsn 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)
MethodVisitor
visitMultiANewArrayInsn 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)
MethodVisitor
visitTypeInsn 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)
MethodVisitor
visitMethodInsn 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 Opcodes.INVOKEDYNAMIC_OWNER.name - the method's name.desc - the method's descriptor (see Type).
public void visitJumpInsn(int opcode,
Label label)
MethodVisitor
visitJumpInsn 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)
MethodVisitor
visitLookupSwitchInsn 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)
MethodVisitor
visitTableSwitchInsn 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 ATHROW
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