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.vfs.VirtualFile;
020 import org.jetbrains.annotations.NotNull;
021 import org.jetbrains.annotations.Nullable;
022 import org.jetbrains.asm4.ClassReader;
023 import org.jetbrains.asm4.ClassVisitor;
024 import org.jetbrains.asm4.FieldVisitor;
025 import org.jetbrains.asm4.MethodVisitor;
026 import org.jetbrains.jet.lang.resolve.java.JvmClassName;
027 import org.jetbrains.jet.lang.resolve.name.Name;
028 import org.jetbrains.jet.utils.ExceptionUtils;
029
030 import java.io.IOException;
031
032 import static org.jetbrains.asm4.ClassReader.*;
033 import static org.jetbrains.asm4.Opcodes.ASM4;
034
035 public class VirtualFileKotlinClass implements KotlinJvmBinaryClass {
036 private final VirtualFile file;
037 private JvmClassName className;
038
039 public VirtualFileKotlinClass(@NotNull VirtualFile file) {
040 this.file = file;
041 }
042
043 @NotNull
044 public VirtualFile getFile() {
045 return file;
046 }
047
048 @NotNull
049 @Override
050 public JvmClassName getClassName() {
051 if (className == null) {
052 try {
053 new ClassReader(file.contentsToByteArray()).accept(new ClassVisitor(ASM4) {
054 @Override
055 public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
056 className = JvmClassName.byInternalName(name);
057 }
058 }, SKIP_CODE | SKIP_DEBUG | SKIP_FRAMES);
059 }
060 catch (IOException e) {
061 throw ExceptionUtils.rethrow(e);
062 }
063 }
064
065 return className;
066 }
067
068 @Override
069 public void loadClassAnnotations(@NotNull final AnnotationVisitor annotationVisitor) {
070 try {
071 new ClassReader(file.contentsToByteArray()).accept(new ClassVisitor(ASM4) {
072 @Override
073 public org.jetbrains.asm4.AnnotationVisitor visitAnnotation(String desc, boolean visible) {
074 return convertAnnotationVisitor(annotationVisitor, desc);
075 }
076
077 @Override
078 public void visitEnd() {
079 annotationVisitor.visitEnd();
080 }
081 }, SKIP_CODE | SKIP_DEBUG | SKIP_FRAMES);
082 }
083 catch (IOException e) {
084 throw ExceptionUtils.rethrow(e);
085 }
086 }
087
088 @Nullable
089 private static org.jetbrains.asm4.AnnotationVisitor convertAnnotationVisitor(@NotNull AnnotationVisitor visitor, @NotNull String desc) {
090 AnnotationArgumentVisitor v = visitor.visitAnnotation(classNameFromAsmDesc(desc));
091 return v == null ? null : convertAnnotationVisitor(v);
092 }
093
094 @NotNull
095 private static org.jetbrains.asm4.AnnotationVisitor convertAnnotationVisitor(@NotNull final AnnotationArgumentVisitor v) {
096 return new org.jetbrains.asm4.AnnotationVisitor(ASM4) {
097 @Override
098 public void visit(String name, Object value) {
099 v.visit(name == null ? null : Name.identifier(name), value);
100 }
101
102 @Override
103 public org.jetbrains.asm4.AnnotationVisitor visitArray(String name) {
104 AnnotationArgumentVisitor av = v.visitArray(Name.guess(name));
105 return av == null ? null : convertAnnotationVisitor(av);
106 }
107
108 @Override
109 public void visitEnum(String name, String desc, String value) {
110 v.visitEnum(Name.identifier(name), classNameFromAsmDesc(desc), Name.identifier(value));
111 }
112
113 @Override
114 public void visitEnd() {
115 v.visitEnd();
116 }
117 };
118 }
119
120 @Override
121 public void loadMemberAnnotations(@NotNull final MemberVisitor memberVisitor) {
122 try {
123 new ClassReader(file.contentsToByteArray()).accept(new ClassVisitor(ASM4) {
124 @Override
125 public FieldVisitor visitField(int access, String name, String desc, String signature, Object value) {
126 final AnnotationVisitor v = memberVisitor.visitField(Name.guess(name), desc);
127 if (v == null) return null;
128
129 return new FieldVisitor(ASM4) {
130 @Override
131 public org.jetbrains.asm4.AnnotationVisitor visitAnnotation(String desc, boolean visible) {
132 return convertAnnotationVisitor(v, desc);
133 }
134
135 @Override
136 public void visitEnd() {
137 v.visitEnd();
138 }
139 };
140 }
141
142 @Override
143 public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
144 final AnnotationVisitor v = memberVisitor.visitMethod(Name.guess(name), desc);
145 if (v == null) return null;
146
147 return new MethodVisitor(ASM4) {
148 @Override
149 public org.jetbrains.asm4.AnnotationVisitor visitAnnotation(String desc, boolean visible) {
150 return convertAnnotationVisitor(v, desc);
151 }
152
153 @Override
154 public void visitEnd() {
155 v.visitEnd();
156 }
157 };
158 }
159 }, SKIP_CODE | SKIP_DEBUG | SKIP_FRAMES);
160 }
161 catch (IOException e) {
162 throw ExceptionUtils.rethrow(e);
163 }
164 }
165
166 @NotNull
167 private static JvmClassName classNameFromAsmDesc(@NotNull String desc) {
168 assert desc.startsWith("L") && desc.endsWith(";") : "Not a JVM descriptor: " + desc;
169 return JvmClassName.byInternalName(desc.substring(1, desc.length() - 1));
170 }
171
172 @Override
173 public int hashCode() {
174 return file.hashCode();
175 }
176
177 @Override
178 public boolean equals(Object obj) {
179 return obj instanceof VirtualFileKotlinClass && ((VirtualFileKotlinClass) obj).file.equals(file);
180 }
181
182 @Override
183 public String toString() {
184 return getClass().getSimpleName() + ": " + file.toString();
185 }
186 }