1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/classes/com/sun/tools/javap/AnnotationWriter.java Wed Apr 27 01:34:52 2016 +0800
1.3 @@ -0,0 +1,292 @@
1.4 +/*
1.5 + * Copyright (c) 2007, 2013, 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 +
1.29 +package com.sun.tools.javap;
1.30 +
1.31 +import com.sun.tools.classfile.Annotation;
1.32 +import com.sun.tools.classfile.TypeAnnotation;
1.33 +import com.sun.tools.classfile.Annotation.Annotation_element_value;
1.34 +import com.sun.tools.classfile.Annotation.Array_element_value;
1.35 +import com.sun.tools.classfile.Annotation.Class_element_value;
1.36 +import com.sun.tools.classfile.Annotation.Enum_element_value;
1.37 +import com.sun.tools.classfile.Annotation.Primitive_element_value;
1.38 +import com.sun.tools.classfile.ConstantPool;
1.39 +import com.sun.tools.classfile.ConstantPoolException;
1.40 +import com.sun.tools.classfile.Descriptor;
1.41 +import com.sun.tools.classfile.Descriptor.InvalidDescriptor;
1.42 +
1.43 +/**
1.44 + * A writer for writing annotations as text.
1.45 + *
1.46 + * <p><b>This is NOT part of any supported API.
1.47 + * If you write code that depends on this, you do so at your own risk.
1.48 + * This code and its internal interfaces are subject to change or
1.49 + * deletion without notice.</b>
1.50 + */
1.51 +public class AnnotationWriter extends BasicWriter {
1.52 + static AnnotationWriter instance(Context context) {
1.53 + AnnotationWriter instance = context.get(AnnotationWriter.class);
1.54 + if (instance == null)
1.55 + instance = new AnnotationWriter(context);
1.56 + return instance;
1.57 + }
1.58 +
1.59 + protected AnnotationWriter(Context context) {
1.60 + super(context);
1.61 + classWriter = ClassWriter.instance(context);
1.62 + constantWriter = ConstantWriter.instance(context);
1.63 + }
1.64 +
1.65 + public void write(Annotation annot) {
1.66 + write(annot, false);
1.67 + }
1.68 +
1.69 + public void write(Annotation annot, boolean resolveIndices) {
1.70 + writeDescriptor(annot.type_index, resolveIndices);
1.71 + boolean showParens = annot.num_element_value_pairs > 0 || !resolveIndices;
1.72 + if (showParens)
1.73 + print("(");
1.74 + for (int i = 0; i < annot.num_element_value_pairs; i++) {
1.75 + if (i > 0)
1.76 + print(",");
1.77 + write(annot.element_value_pairs[i], resolveIndices);
1.78 + }
1.79 + if (showParens)
1.80 + print(")");
1.81 + }
1.82 +
1.83 + public void write(TypeAnnotation annot) {
1.84 + write(annot, true, false);
1.85 + }
1.86 +
1.87 + public void write(TypeAnnotation annot, boolean showOffsets, boolean resolveIndices) {
1.88 + write(annot.annotation, resolveIndices);
1.89 + print(": ");
1.90 + write(annot.position, showOffsets);
1.91 + }
1.92 +
1.93 + public void write(TypeAnnotation.Position pos, boolean showOffsets) {
1.94 + print(pos.type);
1.95 +
1.96 + switch (pos.type) {
1.97 + // instanceof
1.98 + case INSTANCEOF:
1.99 + // new expression
1.100 + case NEW:
1.101 + // constructor/method reference receiver
1.102 + case CONSTRUCTOR_REFERENCE:
1.103 + case METHOD_REFERENCE:
1.104 + if (showOffsets) {
1.105 + print(", offset=");
1.106 + print(pos.offset);
1.107 + }
1.108 + break;
1.109 + // local variable
1.110 + case LOCAL_VARIABLE:
1.111 + // resource variable
1.112 + case RESOURCE_VARIABLE:
1.113 + if (pos.lvarOffset == null) {
1.114 + print(", lvarOffset is Null!");
1.115 + break;
1.116 + }
1.117 + print(", {");
1.118 + for (int i = 0; i < pos.lvarOffset.length; ++i) {
1.119 + if (i != 0) print("; ");
1.120 + if (showOffsets) {
1.121 + print("start_pc=");
1.122 + print(pos.lvarOffset[i]);
1.123 + }
1.124 + print(", length=");
1.125 + print(pos.lvarLength[i]);
1.126 + print(", index=");
1.127 + print(pos.lvarIndex[i]);
1.128 + }
1.129 + print("}");
1.130 + break;
1.131 + // exception parameter
1.132 + case EXCEPTION_PARAMETER:
1.133 + print(", exception_index=");
1.134 + print(pos.exception_index);
1.135 + break;
1.136 + // method receiver
1.137 + case METHOD_RECEIVER:
1.138 + // Do nothing
1.139 + break;
1.140 + // type parameter
1.141 + case CLASS_TYPE_PARAMETER:
1.142 + case METHOD_TYPE_PARAMETER:
1.143 + print(", param_index=");
1.144 + print(pos.parameter_index);
1.145 + break;
1.146 + // type parameter bound
1.147 + case CLASS_TYPE_PARAMETER_BOUND:
1.148 + case METHOD_TYPE_PARAMETER_BOUND:
1.149 + print(", param_index=");
1.150 + print(pos.parameter_index);
1.151 + print(", bound_index=");
1.152 + print(pos.bound_index);
1.153 + break;
1.154 + // class extends or implements clause
1.155 + case CLASS_EXTENDS:
1.156 + print(", type_index=");
1.157 + print(pos.type_index);
1.158 + break;
1.159 + // throws
1.160 + case THROWS:
1.161 + print(", type_index=");
1.162 + print(pos.type_index);
1.163 + break;
1.164 + // method parameter
1.165 + case METHOD_FORMAL_PARAMETER:
1.166 + print(", param_index=");
1.167 + print(pos.parameter_index);
1.168 + break;
1.169 + // type cast
1.170 + case CAST:
1.171 + // method/constructor/reference type argument
1.172 + case CONSTRUCTOR_INVOCATION_TYPE_ARGUMENT:
1.173 + case METHOD_INVOCATION_TYPE_ARGUMENT:
1.174 + case CONSTRUCTOR_REFERENCE_TYPE_ARGUMENT:
1.175 + case METHOD_REFERENCE_TYPE_ARGUMENT:
1.176 + if (showOffsets) {
1.177 + print(", offset=");
1.178 + print(pos.offset);
1.179 + }
1.180 + print(", type_index=");
1.181 + print(pos.type_index);
1.182 + break;
1.183 + // We don't need to worry about these
1.184 + case METHOD_RETURN:
1.185 + case FIELD:
1.186 + break;
1.187 + case UNKNOWN:
1.188 + throw new AssertionError("AnnotationWriter: UNKNOWN target type should never occur!");
1.189 + default:
1.190 + throw new AssertionError("AnnotationWriter: Unknown target type for position: " + pos);
1.191 + }
1.192 +
1.193 + // Append location data for generics/arrays.
1.194 + if (!pos.location.isEmpty()) {
1.195 + print(", location=");
1.196 + print(pos.location);
1.197 + }
1.198 + }
1.199 +
1.200 + public void write(Annotation.element_value_pair pair) {
1.201 + write(pair, false);
1.202 + }
1.203 +
1.204 + public void write(Annotation.element_value_pair pair, boolean resolveIndices) {
1.205 + writeIndex(pair.element_name_index, resolveIndices);
1.206 + print("=");
1.207 + write(pair.value, resolveIndices);
1.208 + }
1.209 +
1.210 + public void write(Annotation.element_value value) {
1.211 + write(value, false);
1.212 + }
1.213 +
1.214 + public void write(Annotation.element_value value, boolean resolveIndices) {
1.215 + ev_writer.write(value, resolveIndices);
1.216 + }
1.217 +
1.218 + private void writeDescriptor(int index, boolean resolveIndices) {
1.219 + if (resolveIndices) {
1.220 + try {
1.221 + ConstantPool constant_pool = classWriter.getClassFile().constant_pool;
1.222 + Descriptor d = new Descriptor(index);
1.223 + print(d.getFieldType(constant_pool));
1.224 + return;
1.225 + } catch (ConstantPoolException ignore) {
1.226 + } catch (InvalidDescriptor ignore) {
1.227 + }
1.228 + }
1.229 +
1.230 + print("#" + index);
1.231 + }
1.232 +
1.233 + private void writeIndex(int index, boolean resolveIndices) {
1.234 + if (resolveIndices) {
1.235 + print(constantWriter.stringValue(index));
1.236 + } else
1.237 + print("#" + index);
1.238 + }
1.239 +
1.240 + element_value_Writer ev_writer = new element_value_Writer();
1.241 +
1.242 + class element_value_Writer implements Annotation.element_value.Visitor<Void,Boolean> {
1.243 + public void write(Annotation.element_value value, boolean resolveIndices) {
1.244 + value.accept(this, resolveIndices);
1.245 + }
1.246 +
1.247 + public Void visitPrimitive(Primitive_element_value ev, Boolean resolveIndices) {
1.248 + if (resolveIndices)
1.249 + writeIndex(ev.const_value_index, resolveIndices);
1.250 + else
1.251 + print(((char) ev.tag) + "#" + ev.const_value_index);
1.252 + return null;
1.253 + }
1.254 +
1.255 + public Void visitEnum(Enum_element_value ev, Boolean resolveIndices) {
1.256 + if (resolveIndices) {
1.257 + writeIndex(ev.type_name_index, resolveIndices);
1.258 + print(".");
1.259 + writeIndex(ev.const_name_index, resolveIndices);
1.260 + } else
1.261 + print(((char) ev.tag) + "#" + ev.type_name_index + ".#" + ev.const_name_index);
1.262 + return null;
1.263 + }
1.264 +
1.265 + public Void visitClass(Class_element_value ev, Boolean resolveIndices) {
1.266 + if (resolveIndices) {
1.267 + writeIndex(ev.class_info_index, resolveIndices);
1.268 + print(".class");
1.269 + } else
1.270 + print(((char) ev.tag) + "#" + ev.class_info_index);
1.271 + return null;
1.272 + }
1.273 +
1.274 + public Void visitAnnotation(Annotation_element_value ev, Boolean resolveIndices) {
1.275 + print((char) ev.tag);
1.276 + AnnotationWriter.this.write(ev.annotation_value, resolveIndices);
1.277 + return null;
1.278 + }
1.279 +
1.280 + public Void visitArray(Array_element_value ev, Boolean resolveIndices) {
1.281 + print("[");
1.282 + for (int i = 0; i < ev.num_values; i++) {
1.283 + if (i > 0)
1.284 + print(",");
1.285 + write(ev.values[i], resolveIndices);
1.286 + }
1.287 + print("]");
1.288 + return null;
1.289 + }
1.290 +
1.291 + }
1.292 +
1.293 + private ClassWriter classWriter;
1.294 + private ConstantWriter constantWriter;
1.295 +}
