1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.tools.layoutlib.create; 18 19import com.android.tools.layoutlib.annotations.VisibleForTesting; 20import com.android.tools.layoutlib.annotations.VisibleForTesting.Visibility; 21 22import org.objectweb.asm.AnnotationVisitor; 23import org.objectweb.asm.Attribute; 24import org.objectweb.asm.ClassVisitor; 25import org.objectweb.asm.FieldVisitor; 26import org.objectweb.asm.MethodVisitor; 27import org.objectweb.asm.Opcodes; 28 29/** 30 * Indicates if a class contains any native methods. 31 */ 32public class ClassHasNativeVisitor extends ClassVisitor { 33 public ClassHasNativeVisitor() { 34 super(Opcodes.ASM4); 35 } 36 37 private boolean mHasNativeMethods = false; 38 39 public boolean hasNativeMethods() { 40 return mHasNativeMethods; 41 } 42 43 @VisibleForTesting(visibility=Visibility.PRIVATE) 44 protected void setHasNativeMethods(boolean hasNativeMethods, String methodName) { 45 mHasNativeMethods = hasNativeMethods; 46 } 47 48 @Override 49 public void visit(int version, int access, String name, String signature, 50 String superName, String[] interfaces) { 51 // pass 52 } 53 54 @Override 55 public AnnotationVisitor visitAnnotation(String desc, boolean visible) { 56 // pass 57 return null; 58 } 59 60 @Override 61 public void visitAttribute(Attribute attr) { 62 // pass 63 } 64 65 @Override 66 public void visitEnd() { 67 // pass 68 } 69 70 @Override 71 public FieldVisitor visitField(int access, String name, String desc, 72 String signature, Object value) { 73 // pass 74 return null; 75 } 76 77 @Override 78 public void visitInnerClass(String name, String outerName, 79 String innerName, int access) { 80 // pass 81 } 82 83 @Override 84 public MethodVisitor visitMethod(int access, String name, String desc, 85 String signature, String[] exceptions) { 86 if ((access & Opcodes.ACC_NATIVE) != 0) { 87 setHasNativeMethods(true, name); 88 } 89 return null; 90 } 91 92 @Override 93 public void visitOuterClass(String owner, String name, String desc) { 94 // pass 95 } 96 97 @Override 98 public void visitSource(String source, String debug) { 99 // pass 100 } 101 102} 103