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java.lang.Object org.drools.asm.MethodAdapter org.drools.asm.commons.LocalVariablesSorter org.drools.asm.commons.GeneratorAdapter org.drools.asm.commons.AdviceAdapter
public abstract class AdviceAdapter
A MethodAdapter
to dispatch method body instruction
The behavior is like this:
Field Summary | |
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protected int |
methodAccess
|
protected String |
methodDesc
|
Fields inherited from class org.drools.asm.commons.GeneratorAdapter |
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ADD, AND, DIV, EQ, GE, GT, LE, LT, MUL, NE, NEG, OR, REM, SHL, SHR, SUB, USHR, XOR |
Fields inherited from class org.drools.asm.commons.LocalVariablesSorter |
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firstLocal |
Fields inherited from class org.drools.asm.MethodAdapter |
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mv |
Constructor Summary | |
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AdviceAdapter(MethodVisitor mv,
int access,
String name,
String desc)
Creates a new AdviceAdapter . |
Method Summary | |
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protected abstract void |
onMethodEnter()
Called at the beginning of the method or after super class class call in the constructor. |
protected abstract void |
onMethodExit(int opcode)
Called before explicit exit from the method using either return or throw. |
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 name)
Visits a type instruction. |
void |
visitVarInsn(int opcode,
int var)
Visits a local variable instruction. |
Methods inherited from class org.drools.asm.commons.GeneratorAdapter |
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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, invokeInterface, invokeStatic, invokeVirtual, loadArg, loadArgArray, loadArgs, loadArgs, loadLocal, loadLocal, loadThis, mark, mark, math, monitorEnter, monitorExit, newArray, newInstance, newLabel, newLocal, not, pop, pop2, push, push, push, push, push, push, push, putField, putStatic, ret, returnValue, storeArg, storeLocal, storeLocal, swap, swap, tableSwitch, tableSwitch, throwException, throwException, unbox |
Methods inherited from class org.drools.asm.commons.LocalVariablesSorter |
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newLocal, visitIincInsn, visitLocalVariable, visitMaxs |
Methods inherited from class org.drools.asm.MethodAdapter |
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visitAnnotation, visitAnnotationDefault, visitAttribute, visitCode, visitEnd, visitLineNumber, visitParameterAnnotation, visitTryCatchBlock |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected int methodAccess
protected String methodDesc
Constructor Detail |
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public AdviceAdapter(MethodVisitor mv, int access, String name, String desc)
AdviceAdapter
.
Method Detail |
---|
public void visitLabel(Label label)
MethodVisitor
visitLabel
in interface MethodVisitor
visitLabel
in class MethodAdapter
label
- a Label
object.public void visitInsn(int opcode)
MethodVisitor
visitInsn
in interface MethodVisitor
visitInsn
in class MethodAdapter
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.public void visitVarInsn(int opcode, int var)
MethodVisitor
visitVarInsn
in interface MethodVisitor
visitVarInsn
in class LocalVariablesSorter
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.public void visitFieldInsn(int opcode, String owner, String name, String desc)
MethodVisitor
visitFieldInsn
in interface MethodVisitor
visitFieldInsn
in class MethodAdapter
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
).public void visitIntInsn(int opcode, int operand)
MethodVisitor
visitIntInsn
in interface MethodVisitor
visitIntInsn
in class MethodAdapter
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
.public void visitLdcInsn(Object cst)
MethodVisitor
visitLdcInsn
in interface MethodVisitor
visitLdcInsn
in class MethodAdapter
public void visitMultiANewArrayInsn(String desc, int dims)
MethodVisitor
visitMultiANewArrayInsn
in interface MethodVisitor
visitMultiANewArrayInsn
in class MethodAdapter
desc
- an array type descriptor (see Type
).dims
- number of dimensions of the array to allocate.public void visitTypeInsn(int opcode, String name)
MethodVisitor
visitTypeInsn
in interface MethodVisitor
visitTypeInsn
in class MethodAdapter
opcode
- the opcode of the type instruction to be visited. This
opcode is either NEW, ANEWARRAY, CHECKCAST or INSTANCEOF.name
- the operand of the instruction to be visited. This operand is
must be a fully qualified class name in internal form, or the type
descriptor of an array type (see Type
).public void visitMethodInsn(int opcode, String owner, String name, String desc)
MethodVisitor
visitMethodInsn
in interface MethodVisitor
visitMethodInsn
in class MethodAdapter
opcode
- the opcode of the type instruction to be visited. This
opcode is either INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC or
INVOKEINTERFACE.owner
- the internal name of the method's owner class (see getInternalName
).name
- the method's name.desc
- the method's descriptor (see Type
).public void visitJumpInsn(int opcode, Label label)
MethodVisitor
visitJumpInsn
in interface MethodVisitor
visitJumpInsn
in class MethodAdapter
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.public void visitLookupSwitchInsn(Label dflt, int[] keys, Label[] labels)
MethodVisitor
visitLookupSwitchInsn
in interface MethodVisitor
visitLookupSwitchInsn
in class MethodAdapter
dflt
- 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 MethodVisitor
visitTableSwitchInsn
in class MethodAdapter
min
- 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 abstract void onMethodEnter()
protected abstract 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(int opcode, Object param) { ...
opcode
- one of the RETURN, IRETURN, FRETURN,
ARETURN, LRETURN, DRETURN or ATHROW
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