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.codegen;
018
019 import com.google.common.collect.Lists;
020 import com.intellij.openapi.vfs.VfsUtilCore;
021 import com.intellij.openapi.vfs.VirtualFile;
022 import com.intellij.psi.PsiFile;
023 import com.intellij.util.Function;
024 import com.intellij.util.containers.ContainerUtil;
025 import org.jetbrains.annotations.NotNull;
026 import org.jetbrains.annotations.Nullable;
027 import org.jetbrains.jet.OutputFile;
028 import org.jetbrains.jet.OutputFileCollection;
029 import org.jetbrains.jet.codegen.state.GenerationState;
030 import org.jetbrains.jet.lang.descriptors.ClassDescriptor;
031 import org.jetbrains.jet.lang.psi.JetFile;
032 import org.jetbrains.jet.lang.resolve.name.FqName;
033 import org.jetbrains.org.objectweb.asm.Type;
034
035 import java.io.File;
036 import java.util.*;
037
038 import static org.jetbrains.jet.codegen.AsmUtil.asmTypeByFqNameWithoutInnerClasses;
039 import static org.jetbrains.jet.codegen.AsmUtil.isPrimitive;
040 import static org.jetbrains.jet.lang.resolve.java.PackageClassUtils.getPackageClassFqName;
041
042 public class ClassFileFactory implements OutputFileCollection {
043 private final GenerationState state;
044 private final ClassBuilderFactory builderFactory;
045 private final Map<FqName, PackageCodegen> package2codegen = new HashMap<FqName, PackageCodegen>();
046 private final Map<String, ClassBuilderAndSourceFileList> generators = new LinkedHashMap<String, ClassBuilderAndSourceFileList>();
047
048 private boolean isDone = false;
049
050 public ClassFileFactory(@NotNull GenerationState state, @NotNull ClassBuilderFactory builderFactory) {
051 this.state = state;
052 this.builderFactory = builderFactory;
053 }
054
055 @NotNull
056 ClassBuilder newVisitor(@NotNull Type asmType, @NotNull PsiFile sourceFile) {
057 return newVisitor(asmType, Collections.singletonList(sourceFile));
058 }
059
060 @NotNull
061 private ClassBuilder newVisitor(@NotNull Type asmType, @NotNull Collection<? extends PsiFile> sourceFiles) {
062 String outputFilePath = asmType.getInternalName() + ".class";
063 state.getProgress().reportOutput(toIoFilesIgnoringNonPhysical(sourceFiles), new File(outputFilePath));
064 ClassBuilder answer = builderFactory.newClassBuilder();
065 generators.put(outputFilePath, new ClassBuilderAndSourceFileList(answer, sourceFiles));
066 return answer;
067 }
068
069 void done() {
070 if (!isDone) {
071 isDone = true;
072 for (PackageCodegen codegen : package2codegen.values()) {
073 codegen.done();
074 }
075 }
076 }
077
078 @NotNull
079 @Override
080 public List<OutputFile> asList() {
081 done();
082 return ContainerUtil.map(generators.keySet(), new Function<String, OutputFile>() {
083 @Override
084 public OutputFile fun(String relativeClassFilePath) {
085 return new OutputClassFile(relativeClassFilePath);
086 }
087 });
088 }
089
090 @Override
091 @Nullable
092 public OutputFile get(@NotNull String relativePath) {
093 if (generators.containsKey(relativePath)) return new OutputClassFile(relativePath);
094
095 return null;
096 }
097
098 public String createText() {
099 StringBuilder answer = new StringBuilder();
100
101 for (OutputFile file : asList()) {
102 answer.append("@").append(file.getRelativePath()).append('\n');
103 answer.append(file.asText());
104 }
105
106 return answer.toString();
107 }
108
109 public PackageCodegen forPackage(final FqName fqName, final Collection<JetFile> files) {
110 assert !isDone : "Already done!";
111 PackageCodegen codegen = package2codegen.get(fqName);
112 if (codegen == null) {
113 ClassBuilderOnDemand onDemand = new ClassBuilderOnDemand() {
114 @NotNull
115 @Override
116 protected ClassBuilder createClassBuilder() {
117 return newVisitor(asmTypeByFqNameWithoutInnerClasses(getPackageClassFqName(fqName)), files);
118 }
119 };
120 codegen = new PackageCodegen(onDemand, fqName, state, files);
121 package2codegen.put(fqName, codegen);
122 }
123
124 return codegen;
125 }
126
127 public ClassBuilder forClassImplementation(ClassDescriptor aClass, PsiFile sourceFile) {
128 Type type = state.getTypeMapper().mapClass(aClass);
129 if (isPrimitive(type)) {
130 throw new IllegalStateException("Codegen for primitive type is not possible: " + aClass);
131 }
132 return newVisitor(type, sourceFile);
133 }
134
135 public ClassBuilder forLambdaInlining(Type lambdaType, PsiFile sourceFile) {
136 if (isPrimitive(lambdaType)) {
137 throw new IllegalStateException("Codegen for primitive type is not possible: " + lambdaType);
138 }
139 return newVisitor(lambdaType, sourceFile);
140 }
141
142 @NotNull
143 public ClassBuilder forPackagePart(@NotNull Type asmType, @NotNull PsiFile sourceFile) {
144 return newVisitor(asmType, sourceFile);
145 }
146
147 @NotNull
148 public ClassBuilder forTraitImplementation(@NotNull ClassDescriptor aClass, @NotNull GenerationState state, @NotNull PsiFile file) {
149 return newVisitor(state.getTypeMapper().mapTraitImpl(aClass), file);
150 }
151
152 private static Collection<File> toIoFilesIgnoringNonPhysical(Collection<? extends PsiFile> psiFiles) {
153 List<File> result = Lists.newArrayList();
154 for (PsiFile psiFile : psiFiles) {
155 VirtualFile virtualFile = psiFile.getVirtualFile();
156 // We ignore non-physical files here, because this code is needed to tell the make what inputs affect which outputs
157 // a non-physical file cannot be processed by make
158 if (virtualFile != null) {
159 result.add(new File(virtualFile.getPath()));
160 }
161 }
162 return result;
163 }
164
165 private final class OutputClassFile implements OutputFile {
166 final String relativeClassFilePath;
167
168 OutputClassFile(String relativeClassFilePath) {
169 this.relativeClassFilePath = relativeClassFilePath;
170 }
171
172 @NotNull
173 @Override
174 public String getRelativePath() {
175 return relativeClassFilePath;
176 }
177
178 @NotNull
179 @Override
180 public List<File> getSourceFiles() {
181 ClassBuilderAndSourceFileList pair = generators.get(relativeClassFilePath);
182 if (pair == null) {
183 throw new IllegalStateException("No record for binary file " + relativeClassFilePath);
184 }
185
186 return ContainerUtil.mapNotNull(
187 pair.sourceFiles,
188 new Function<PsiFile, File>() {
189 @Override
190 public File fun(PsiFile file) {
191 VirtualFile virtualFile = file.getVirtualFile();
192 if (virtualFile == null) return null;
193
194 return VfsUtilCore.virtualToIoFile(virtualFile);
195 }
196 }
197 );
198 }
199
200 @NotNull
201 @Override
202 public byte[] asByteArray() {
203 return builderFactory.asBytes(generators.get(relativeClassFilePath).classBuilder);
204 }
205
206 @NotNull
207 @Override
208 public String asText() {
209 return builderFactory.asText(generators.get(relativeClassFilePath).classBuilder);
210 }
211
212 @NotNull
213 @Override
214 public String toString() {
215 return getRelativePath() + " (compiled from " + getSourceFiles() + ")";
216 }
217 }
218
219 private static final class ClassBuilderAndSourceFileList {
220 private final ClassBuilder classBuilder;
221 private final Collection<? extends PsiFile> sourceFiles;
222
223 private ClassBuilderAndSourceFileList(ClassBuilder classBuilder, Collection<? extends PsiFile> sourceFiles) {
224 this.classBuilder = classBuilder;
225 this.sourceFiles = sourceFiles;
226 }
227 }
228
229 public void removeInlinedClasses(Set<String> classNamesToRemove) {
230 for (String classInternalName : classNamesToRemove) {
231 generators.remove(classInternalName + ".class");
232 }
233 }
234 }