com.github.omottec.asm.OnDestroyMethodVisitor Maven / Gradle / Ivy

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gradle plugin with asm

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package com.github.omottec.asm;

import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;

public class OnDestroyMethodVisitor extends MethodVisitor {
    public OnDestroyMethodVisitor(int api, MethodVisitor methodVisitor) {
        super(api, methodVisitor);
    }

    @Override
    public void visitMethodInsn(int opcode,
                                String owner,
                                String name,
                                String descriptor,
                                boolean isInterface) {
        //方法执行前插入
        mv.visitLdcInsn("ASM");
        mv.visitTypeInsn(Opcodes.NEW, "java/lang/StringBuilder");
        mv.visitInsn(Opcodes.DUP);
        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/StringBuilder", "", "()V", false);
        mv.visitLdcInsn("-------> onDestroy : ");
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;", false);
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Class", "getSimpleName", "()Ljava/lang/String;", false);
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false);
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, "android/util/Log", "i", "(Ljava/lang/String;Ljava/lang/String;)I", false);
        mv.visitInsn(Opcodes.POP);

        super.visitCode();
        //方法执行后插入
    }

    @Override
    public void visitInsn(int opcode) {
        super.visitInsn(opcode);
    }
}