1 /* 2 * Copyright (C) 2009 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 17 package com.android.mkstubs.sourcer; 18 19 import org.objectweb.asm.AnnotationVisitor; 20 21 /** 22 * An annotation visitor that generates Java source for an annotation. 23 */ 24 class AnnotationSourcer implements AnnotationVisitor { 25 26 private final String mOpenChar; 27 private final String mCloseChar; 28 private final Output mOutput; 29 private boolean mNeedClose; 30 AnnotationSourcer(Output output)31 public AnnotationSourcer(Output output) { 32 this(output, false /*isArray*/); 33 } 34 AnnotationSourcer(Output output, boolean isArray)35 public AnnotationSourcer(Output output, boolean isArray) { 36 mOutput = output; 37 mOpenChar = isArray ? "[" : "("; 38 mCloseChar = isArray ? "]" : ")"; 39 } 40 visit(String name, Object value)41 public void visit(String name, Object value) { 42 startOpen(); 43 44 if (name != null) { 45 mOutput.write("%s=", name); 46 } 47 if (value != null) { 48 mOutput.write(name.toString()); 49 } 50 } 51 startOpen()52 private void startOpen() { 53 if (!mNeedClose) { 54 mNeedClose = true; 55 mOutput.write(mOpenChar); 56 } 57 } 58 visitEnd()59 public void visitEnd() { 60 if (mNeedClose) { 61 mOutput.write(mCloseChar); 62 } 63 mOutput.write("\n"); 64 } 65 visitAnnotation(String name, String desc)66 public AnnotationVisitor visitAnnotation(String name, String desc) { 67 startOpen(); 68 69 mOutput.write("@%s", name); 70 return this; 71 } 72 visitArray(String name)73 public AnnotationVisitor visitArray(String name) { 74 startOpen(); 75 return new AnnotationSourcer(mOutput, true /*isArray*/); 76 } 77 visitEnum(String name, String desc, String value)78 public void visitEnum(String name, String desc, String value) { 79 mOutput.write("/* annotation enum not supported: %s */\n", name); 80 } 81 82 } 83