001 /*
002 * Copyright 2010-2013 JetBrains s.r.o.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017 package org.jetbrains.jet.lang.resolve.kotlin;
018
019 import com.intellij.openapi.util.Ref;
020 import com.intellij.openapi.vfs.VirtualFile;
021 import kotlin.Function0;
022 import org.jetbrains.annotations.NotNull;
023 import org.jetbrains.annotations.Nullable;
024 import org.jetbrains.asm4.ClassReader;
025 import org.jetbrains.asm4.ClassVisitor;
026 import org.jetbrains.asm4.FieldVisitor;
027 import org.jetbrains.asm4.MethodVisitor;
028 import org.jetbrains.jet.lang.resolve.java.JvmClassName;
029 import org.jetbrains.jet.lang.resolve.kotlin.header.KotlinClassHeader;
030 import org.jetbrains.jet.lang.resolve.kotlin.header.ReadKotlinClassHeaderAnnotationVisitor;
031 import org.jetbrains.jet.lang.resolve.name.Name;
032 import org.jetbrains.jet.storage.NotNullLazyValue;
033 import org.jetbrains.jet.storage.NullableLazyValue;
034 import org.jetbrains.jet.storage.StorageManager;
035 import org.jetbrains.jet.utils.UtilsPackage;
036
037 import java.io.IOException;
038
039 import static org.jetbrains.asm4.ClassReader.*;
040 import static org.jetbrains.asm4.Opcodes.ASM4;
041
042 public class VirtualFileKotlinClass implements KotlinJvmBinaryClass {
043 private final VirtualFile file;
044 private final NotNullLazyValue<JvmClassName> className;
045 private final NullableLazyValue<KotlinClassHeader> classHeader;
046
047 public VirtualFileKotlinClass(@NotNull StorageManager storageManager, @NotNull VirtualFile file) {
048 this.file = file;
049 this.className = storageManager.createLazyValue(
050 new Function0<JvmClassName>() {
051 @Override
052 public JvmClassName invoke() {
053 return computeClassName();
054 }
055 }
056 );
057 this.classHeader = storageManager.createNullableLazyValue(
058 new Function0<KotlinClassHeader>() {
059 @Override
060 public KotlinClassHeader invoke() {
061 return ReadKotlinClassHeaderAnnotationVisitor.read(VirtualFileKotlinClass.this);
062 }
063 }
064 );
065 }
066
067 @NotNull
068 public VirtualFile getFile() {
069 return file;
070 }
071
072 @NotNull
073 private JvmClassName computeClassName() {
074 final Ref<JvmClassName> classNameRef = Ref.create();
075 try {
076 new ClassReader(file.contentsToByteArray()).accept(new ClassVisitor(ASM4) {
077 @Override
078 public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
079 classNameRef.set(JvmClassName.byInternalName(name));
080 }
081 }, SKIP_CODE | SKIP_DEBUG | SKIP_FRAMES);
082 }
083 catch (IOException e) {
084 throw UtilsPackage.rethrow(e);
085 }
086 return classNameRef.get();
087 }
088
089 @NotNull
090 @Override
091 public JvmClassName getClassName() {
092 return className.invoke();
093 }
094
095 @Override
096 public KotlinClassHeader getClassHeader() {
097 return classHeader.invoke();
098 }
099
100 @Override
101 public void loadClassAnnotations(@NotNull final AnnotationVisitor annotationVisitor) {
102 try {
103 new ClassReader(file.contentsToByteArray()).accept(new ClassVisitor(ASM4) {
104 @Override
105 public org.jetbrains.asm4.AnnotationVisitor visitAnnotation(String desc, boolean visible) {
106 return convertAnnotationVisitor(annotationVisitor, desc);
107 }
108
109 @Override
110 public void visitEnd() {
111 annotationVisitor.visitEnd();
112 }
113 }, SKIP_CODE | SKIP_DEBUG | SKIP_FRAMES);
114 }
115 catch (IOException e) {
116 throw UtilsPackage.rethrow(e);
117 }
118 }
119
120 @Nullable
121 private static org.jetbrains.asm4.AnnotationVisitor convertAnnotationVisitor(@NotNull AnnotationVisitor visitor, @NotNull String desc) {
122 AnnotationArgumentVisitor v = visitor.visitAnnotation(classNameFromAsmDesc(desc));
123 return v == null ? null : convertAnnotationVisitor(v);
124 }
125
126 @NotNull
127 private static org.jetbrains.asm4.AnnotationVisitor convertAnnotationVisitor(@NotNull final AnnotationArgumentVisitor v) {
128 return new org.jetbrains.asm4.AnnotationVisitor(ASM4) {
129 @Override
130 public void visit(String name, Object value) {
131 v.visit(name == null ? null : Name.identifier(name), value);
132 }
133
134 @Override
135 public org.jetbrains.asm4.AnnotationVisitor visitArray(String name) {
136 AnnotationArgumentVisitor av = v.visitArray(Name.guess(name));
137 return av == null ? null : convertAnnotationVisitor(av);
138 }
139
140 @Override
141 public void visitEnum(String name, String desc, String value) {
142 v.visitEnum(Name.identifier(name), classNameFromAsmDesc(desc), Name.identifier(value));
143 }
144
145 @Override
146 public void visitEnd() {
147 v.visitEnd();
148 }
149 };
150 }
151
152 @Override
153 public void loadMemberAnnotations(@NotNull final MemberVisitor memberVisitor) {
154 try {
155 new ClassReader(file.contentsToByteArray()).accept(new ClassVisitor(ASM4) {
156 @Override
157 public FieldVisitor visitField(int access, String name, String desc, String signature, Object value) {
158 final AnnotationVisitor v = memberVisitor.visitField(Name.guess(name), desc);
159 if (v == null) return null;
160
161 return new FieldVisitor(ASM4) {
162 @Override
163 public org.jetbrains.asm4.AnnotationVisitor visitAnnotation(String desc, boolean visible) {
164 return convertAnnotationVisitor(v, desc);
165 }
166
167 @Override
168 public void visitEnd() {
169 v.visitEnd();
170 }
171 };
172 }
173
174 @Override
175 public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
176 final MethodAnnotationVisitor v = memberVisitor.visitMethod(Name.guess(name), desc);
177 if (v == null) return null;
178
179 return new MethodVisitor(ASM4) {
180 @Override
181 public org.jetbrains.asm4.AnnotationVisitor visitAnnotation(String desc, boolean visible) {
182 return convertAnnotationVisitor(v, desc);
183 }
184
185 @Override
186 public org.jetbrains.asm4.AnnotationVisitor visitParameterAnnotation(int parameter, String desc, boolean visible) {
187 AnnotationArgumentVisitor av = v.visitParameterAnnotation(parameter, classNameFromAsmDesc(desc));
188 return av == null ? null : convertAnnotationVisitor(av);
189 }
190
191 @Override
192 public void visitEnd() {
193 v.visitEnd();
194 }
195 };
196 }
197 }, SKIP_CODE | SKIP_DEBUG | SKIP_FRAMES);
198 }
199 catch (IOException e) {
200 throw UtilsPackage.rethrow(e);
201 }
202 }
203
204 @NotNull
205 private static JvmClassName classNameFromAsmDesc(@NotNull String desc) {
206 assert desc.startsWith("L") && desc.endsWith(";") : "Not a JVM descriptor: " + desc;
207 return JvmClassName.byInternalName(desc.substring(1, desc.length() - 1));
208 }
209
210 @Override
211 public int hashCode() {
212 return file.hashCode();
213 }
214
215 @Override
216 public boolean equals(Object obj) {
217 return obj instanceof VirtualFileKotlinClass && ((VirtualFileKotlinClass) obj).file.equals(file);
218 }
219
220 @Override
221 public String toString() {
222 return getClass().getSimpleName() + ": " + file.toString();
223 }
224 }