1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/rt/javap/src/main/java/org/apidesign/javap/AnnotationParser.java Tue Feb 26 16:54:16 2013 +0100
1.3 @@ -0,0 +1,145 @@
1.4 +/*
1.5 + * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation. Oracle designates this
1.11 + * particular file as subject to the "Classpath" exception as provided
1.12 + * by Oracle in the LICENSE file that accompanied this code.
1.13 + *
1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 + * version 2 for more details (a copy is included in the LICENSE file that
1.18 + * accompanied this code).
1.19 + *
1.20 + * You should have received a copy of the GNU General Public License version
1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 + *
1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 + * or visit www.oracle.com if you need additional information or have any
1.26 + * questions.
1.27 + */
1.28 +package org.apidesign.javap;
1.29 +
1.30 +import java.io.ByteArrayInputStream;
1.31 +import java.io.DataInputStream;
1.32 +import java.io.IOException;
1.33 +
1.34 +/** An abstract parser for annotation definitions. Analyses the bytes and
1.35 + * performs some callbacks to the overriden parser methods.
1.36 + *
1.37 + * @author Jaroslav Tulach <jtulach@netbeans.org>
1.38 + */
1.39 +public class AnnotationParser {
1.40 + private final boolean textual;
1.41 + private final boolean iterateArray;
1.42 +
1.43 + protected AnnotationParser(boolean textual, boolean iterateArray) {
1.44 + this.textual = textual;
1.45 + this.iterateArray = iterateArray;
1.46 + }
1.47 +
1.48 + protected void visitAnnotationStart(String type, boolean top) throws IOException {
1.49 + }
1.50 +
1.51 + protected void visitAnnotationEnd(String type, boolean top) throws IOException {
1.52 + }
1.53 +
1.54 + protected void visitValueStart(String attrName, char type) throws IOException {
1.55 + }
1.56 +
1.57 + protected void visitValueEnd(String attrName, char type) throws IOException {
1.58 + }
1.59 +
1.60 +
1.61 + protected void visitAttr(
1.62 + String annoType, String attr, String attrType, String value
1.63 + ) throws IOException {
1.64 + }
1.65 +
1.66 + protected void visitEnumAttr(
1.67 + String annoType, String attr, String attrType, String value
1.68 + ) throws IOException {
1.69 + visitAttr(annoType, attr, attrType, value);
1.70 + }
1.71 +
1.72 + /** Initialize the parsing with constant pool from <code>cd</code>.
1.73 + *
1.74 + * @param attr the attribute defining annotations
1.75 + * @param cd constant pool
1.76 + * @throws IOException in case I/O fails
1.77 + */
1.78 + public final void parse(byte[] attr, ClassData cd) throws IOException {
1.79 + ByteArrayInputStream is = new ByteArrayInputStream(attr);
1.80 + DataInputStream dis = new DataInputStream(is);
1.81 + try {
1.82 + read(dis, cd);
1.83 + } finally {
1.84 + is.close();
1.85 + }
1.86 + }
1.87 +
1.88 + private void read(DataInputStream dis, ClassData cd) throws IOException {
1.89 + int cnt = dis.readUnsignedShort();
1.90 + for (int i = 0; i < cnt; i++) {
1.91 + readAnno(dis, cd, true);
1.92 + }
1.93 + }
1.94 +
1.95 + private void readAnno(DataInputStream dis, ClassData cd, boolean top) throws IOException {
1.96 + int type = dis.readUnsignedShort();
1.97 + String typeName = cd.StringValue(type);
1.98 + visitAnnotationStart(typeName, top);
1.99 + int cnt = dis.readUnsignedShort();
1.100 + for (int i = 0; i < cnt; i++) {
1.101 + String attrName = cd.StringValue(dis.readUnsignedShort());
1.102 + readValue(dis, cd, typeName, attrName);
1.103 + }
1.104 + visitAnnotationEnd(typeName, top);
1.105 + if (cnt == 0) {
1.106 + visitAttr(typeName, null, null, null);
1.107 + }
1.108 + }
1.109 +
1.110 + private void readValue(
1.111 + DataInputStream dis, ClassData cd, String typeName, String attrName
1.112 + ) throws IOException {
1.113 + char type = (char)dis.readByte();
1.114 + visitValueStart(attrName, type);
1.115 + if (type == '@') {
1.116 + readAnno(dis, cd, false);
1.117 + } else if ("CFJZsSIDB".indexOf(type) >= 0) { // NOI18N
1.118 + int primitive = dis.readUnsignedShort();
1.119 + String val = cd.stringValue(primitive, textual);
1.120 + String attrType;
1.121 + if (type == 's') {
1.122 + attrType = "Ljava_lang_String_2";
1.123 + if (textual) {
1.124 + val = '"' + val + '"';
1.125 + }
1.126 + } else {
1.127 + attrType = "" + type;
1.128 + }
1.129 + visitAttr(typeName, attrName, attrType, val);
1.130 + } else if (type == 'c') {
1.131 + int cls = dis.readUnsignedShort();
1.132 + } else if (type == '[') {
1.133 + int cnt = dis.readUnsignedShort();
1.134 + for (int i = 0; i < cnt; i++) {
1.135 + readValue(dis, cd, typeName, iterateArray ? attrName : null);
1.136 + }
1.137 + } else if (type == 'e') {
1.138 + int enumT = dis.readUnsignedShort();
1.139 + String attrType = cd.stringValue(enumT, textual);
1.140 + int enumN = dis.readUnsignedShort();
1.141 + String val = cd.stringValue(enumN, textual);
1.142 + visitEnumAttr(typeName, attrName, attrType, val);
1.143 + } else {
1.144 + throw new IOException("Unknown type " + type);
1.145 + }
1.146 + visitValueEnd(attrName, type);
1.147 + }
1.148 +}