AopInvokeAdpter.java

package org.nutz.aop.asm;

import java.lang.reflect.Method;

import org.nutz.repo.org.objectweb.asm.Label;
import org.nutz.repo.org.objectweb.asm.MethodVisitor;
import org.nutz.repo.org.objectweb.asm.Type;

/**
 * 
 * @author wendal(wendal1985@gmail.com)
 *
 */
class AopInvokeAdpter extends AopMethodAdapter {

    Method[] methodArray;

    AopInvokeAdpter(    Method[] methodArray,
                            MethodVisitor mv,
                            int access,
                            String methodName,
                            String desc,
                            int methodIndex,
                            String myName,
                            String enhancedSuperName) {
        super(mv, access, methodName, desc, methodIndex, myName, enhancedSuperName);
        this.methodArray = methodArray;
    }

    void visitCode() {
        mv.visitCode();

        for (int i = 0; i < methodArray.length; i++) {
            Method method = methodArray[i];
            mv.visitVarInsn(ILOAD, 1);
            visitX(i);
            Label l0 = new Label();
            mv.visitJumpInsn(IF_ICMPNE, l0);
            mv.visitVarInsn(ALOAD, 0);
            Type[] args = Type.getArgumentTypes(method);
            for (int j = 0; j < args.length; j++) {
                mv.visitVarInsn(ALOAD, 2);
                visitX(j);
                mv.visitInsn(AALOAD);
                returnType = args[j];
                AsmHelper.checkCast(returnType,mv);
            }
            mv.visitMethodInsn(    INVOKESPECIAL,
                                enhancedSuperName,
                                method.getName(),
                                Type.getMethodDescriptor(method));
            {
                returnType = Type.getReturnType(method);
                if (returnType.equals(Type.VOID_TYPE))
                    mv.visitInsn(ACONST_NULL);
                else if (returnType.getOpcode(IRETURN) != ARETURN)
                    AsmHelper.packagePrivateData(returnType,mv);
                mv.visitInsn(ARETURN);
            }
            mv.visitLabel(l0);
        }

        mv.visitInsn(ACONST_NULL);
        mv.visitInsn(ARETURN);
        mv.visitMaxs(4, 3);
        mv.visitEnd();
    }

}