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.asm4.Type;
028 import org.jetbrains.jet.OutputFile;
029 import org.jetbrains.jet.OutputFileCollection;
030 import org.jetbrains.jet.codegen.state.GenerationState;
031 import org.jetbrains.jet.codegen.state.GenerationStateAware;
032 import org.jetbrains.jet.lang.descriptors.ClassDescriptor;
033 import org.jetbrains.jet.lang.psi.JetFile;
034 import org.jetbrains.jet.lang.resolve.name.FqName;
035
036 import javax.inject.Inject;
037 import java.io.File;
038 import java.util.*;
039
040 import static org.jetbrains.jet.codegen.AsmUtil.asmTypeByFqNameWithoutInnerClasses;
041 import static org.jetbrains.jet.codegen.AsmUtil.isPrimitive;
042 import static org.jetbrains.jet.lang.resolve.java.PackageClassUtils.getPackageClassFqName;
043
044 public final class ClassFileFactory extends GenerationStateAware implements OutputFileCollection {
045 @NotNull private ClassBuilderFactory builderFactory;
046
047 private final Map<FqName, PackageCodegen> package2codegen = new HashMap<FqName, PackageCodegen>();
048 private final Map<String, ClassBuilderAndSourceFileList> generators = new LinkedHashMap<String, ClassBuilderAndSourceFileList>();
049 private boolean isDone = false;
050
051 public ClassFileFactory(@NotNull GenerationState state) {
052 super(state);
053 }
054
055 @Inject
056 public void setBuilderFactory(@NotNull ClassBuilderFactory builderFactory) {
057 this.builderFactory = builderFactory;
058 }
059
060 @NotNull
061 ClassBuilder newVisitor(@NotNull Type asmType, @NotNull PsiFile sourceFile) {
062 return newVisitor(asmType, Collections.singletonList(sourceFile));
063 }
064
065 @NotNull
066 private ClassBuilder newVisitor(@NotNull Type asmType, @NotNull Collection<? extends PsiFile> sourceFiles) {
067 String outputFilePath = asmType.getInternalName() + ".class";
068 state.getProgress().reportOutput(toIoFilesIgnoringNonPhysical(sourceFiles), new File(outputFilePath));
069 ClassBuilder answer = builderFactory.newClassBuilder();
070 generators.put(outputFilePath, new ClassBuilderAndSourceFileList(answer, sourceFiles));
071 return answer;
072 }
073
074 void done() {
075 if (!isDone) {
076 isDone = true;
077 for (PackageCodegen codegen : package2codegen.values()) {
078 codegen.done();
079 }
080 }
081 }
082
083 @Override
084 public List<OutputFile> asList() {
085 done();
086 return ContainerUtil.map(generators.keySet(), new Function<String, OutputFile>() {
087 @Override
088 public OutputFile fun(String relativeClassFilePath) {
089 return new OutputClassFile(relativeClassFilePath);
090 }
091 });
092 }
093
094 @Override
095 @Nullable
096 public OutputFile get(@NotNull String relativePath) {
097 if (generators.containsKey(relativePath)) return new OutputClassFile(relativePath);
098
099 return null;
100 }
101
102 public String createText() {
103 StringBuilder answer = new StringBuilder();
104
105 for (OutputFile file : asList()) {
106 answer.append("@").append(file.getRelativePath()).append('\n');
107 answer.append(file.asText());
108 }
109
110 return answer.toString();
111 }
112
113 public PackageCodegen forPackage(final FqName fqName, final Collection<JetFile> files) {
114 assert !isDone : "Already done!";
115 PackageCodegen codegen = package2codegen.get(fqName);
116 if (codegen == null) {
117 ClassBuilderOnDemand onDemand = new ClassBuilderOnDemand() {
118 @NotNull
119 @Override
120 protected ClassBuilder createClassBuilder() {
121 return newVisitor(asmTypeByFqNameWithoutInnerClasses(getPackageClassFqName(fqName)), files);
122 }
123 };
124 codegen = new PackageCodegen(onDemand, fqName, state, files);
125 package2codegen.put(fqName, codegen);
126 }
127
128 return codegen;
129 }
130
131 public ClassBuilder forClassImplementation(ClassDescriptor aClass, PsiFile sourceFile) {
132 Type type = state.getTypeMapper().mapClass(aClass);
133 if (isPrimitive(type)) {
134 throw new IllegalStateException("Codegen for primitive type is not possible: " + aClass);
135 }
136 return newVisitor(type, sourceFile);
137 }
138
139 public ClassBuilder forLambdaInlining(Type lambaType, PsiFile sourceFile) {
140 if (isPrimitive(lambaType)) {
141 throw new IllegalStateException("Codegen for primitive type is not possible: " + lambaType);
142 }
143 return newVisitor(lambaType, sourceFile);
144 }
145
146 @NotNull
147 public ClassBuilder forPackagePart(@NotNull Type asmType, @NotNull PsiFile sourceFile) {
148 return newVisitor(asmType, sourceFile);
149 }
150
151 @NotNull
152 public ClassBuilder forTraitImplementation(@NotNull ClassDescriptor aClass, @NotNull GenerationState state, @NotNull PsiFile file) {
153 return newVisitor(state.getTypeMapper().mapTraitImpl(aClass), file);
154 }
155
156 private static Collection<File> toIoFilesIgnoringNonPhysical(Collection<? extends PsiFile> psiFiles) {
157 List<File> result = Lists.newArrayList();
158 for (PsiFile psiFile : psiFiles) {
159 VirtualFile virtualFile = psiFile.getVirtualFile();
160 // We ignore non-physical files here, because this code is needed to tell the make what inputs affect which outputs
161 // a non-physical file cannot be processed by make
162 if (virtualFile != null) {
163 result.add(new File(virtualFile.getPath()));
164 }
165 }
166 return result;
167 }
168
169 private final class OutputClassFile implements OutputFile {
170 final String relativeClassFilePath;
171
172 OutputClassFile(String relativeClassFilePath) {
173 this.relativeClassFilePath = relativeClassFilePath;
174 }
175
176 @Override
177 public String getRelativePath() {
178 return relativeClassFilePath;
179 }
180
181 @Override
182 public List<File> getSourceFiles() {
183 ClassBuilderAndSourceFileList pair = generators.get(relativeClassFilePath);
184 if (pair == null) {
185 throw new IllegalStateException("No record for binary file " + relativeClassFilePath);
186 }
187
188 return ContainerUtil.mapNotNull(
189 pair.sourceFiles,
190 new Function<PsiFile, File>() {
191 @Override
192 public File fun(PsiFile file) {
193 VirtualFile virtualFile = file.getVirtualFile();
194 if (virtualFile == null) return null;
195
196 return VfsUtilCore.virtualToIoFile(virtualFile);
197 }
198 }
199 );
200 }
201
202 @NotNull
203 @Override
204 public byte[] asByteArray() {
205 return builderFactory.asBytes(generators.get(relativeClassFilePath).classBuilder);
206 }
207
208 @NotNull
209 @Override
210 public String asText() {
211 return builderFactory.asText(generators.get(relativeClassFilePath).classBuilder);
212 }
213 }
214
215 private static final class ClassBuilderAndSourceFileList {
216 private final ClassBuilder classBuilder;
217 private final Collection<? extends PsiFile> sourceFiles;
218
219 private ClassBuilderAndSourceFileList(ClassBuilder classBuilder, Collection<? extends PsiFile> sourceFiles) {
220 this.classBuilder = classBuilder;
221 this.sourceFiles = sourceFiles;
222 }
223 }
224 }