Java tutorial
/** * This file is part of SpigotPatcher. * * SpigotPatcher is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * SpigotPatcher is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with SpigotPatcher. If not, see <http://www.gnu.org/licenses/>. */ package com.foxelbox.spigotpatcher; import org.objectweb.asm.MethodVisitor; public abstract class MethodPatcherVisitor extends MethodVisitor { public MethodPatcherVisitor(int api, MethodVisitor methodVisitor) { super(api, methodVisitor); } protected abstract boolean checkMethodInsn(int opcode, String clazz, String name, String desc); @Override public void visitMethodInsn(int opcode, String clazz, String name, String desc, boolean isInterface) { if (checkMethodInsn(opcode, clazz, name, desc)) { super.visitMethodInsn(opcode, clazz, name, desc, isInterface); } } @Override public void visitMethodInsn(int opcode, String clazz, String name, String desc) { if (checkMethodInsn(opcode, clazz, name, desc)) { super.visitMethodInsn(opcode, clazz, name, desc); } } }