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, NamespaceCodegen> ns2codegen = new HashMap<FqName, NamespaceCodegen>();
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 private void done() {
075 if (!isDone) {
076 isDone = true;
077 for (NamespaceCodegen codegen : ns2codegen.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 NamespaceCodegen forNamespace(final FqName fqName, final Collection<JetFile> files) {
114 assert !isDone : "Already done!";
115 NamespaceCodegen codegen = ns2codegen.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 NamespaceCodegen(onDemand, fqName, state, files);
125 ns2codegen.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 @NotNull
140 public ClassBuilder forPackageFragment(@NotNull Type asmType, @NotNull PsiFile sourceFile) {
141 return newVisitor(asmType, sourceFile);
142 }
143
144 @NotNull
145 public ClassBuilder forTraitImplementation(@NotNull ClassDescriptor aClass, @NotNull GenerationState state, @NotNull PsiFile file) {
146 return newVisitor(state.getTypeMapper().mapTraitImpl(aClass), file);
147 }
148
149 private static Collection<File> toIoFilesIgnoringNonPhysical(Collection<? extends PsiFile> psiFiles) {
150 List<File> result = Lists.newArrayList();
151 for (PsiFile psiFile : psiFiles) {
152 VirtualFile virtualFile = psiFile.getVirtualFile();
153 // We ignore non-physical files here, because this code is needed to tell the make what inputs affect which outputs
154 // a non-physical file cannot be processed by make
155 if (virtualFile != null) {
156 result.add(new File(virtualFile.getPath()));
157 }
158 }
159 return result;
160 }
161
162 private final class OutputClassFile implements OutputFile {
163 final String relativeClassFilePath;
164
165 OutputClassFile(String relativeClassFilePath) {
166 this.relativeClassFilePath = relativeClassFilePath;
167 }
168
169 @Override
170 public String getRelativePath() {
171 return relativeClassFilePath;
172 }
173
174 @Override
175 public List<File> getSourceFiles() {
176 ClassBuilderAndSourceFileList pair = generators.get(relativeClassFilePath);
177 if (pair == null) {
178 throw new IllegalStateException("No record for binary file " + relativeClassFilePath);
179 }
180
181 return ContainerUtil.mapNotNull(
182 pair.sourceFiles,
183 new Function<PsiFile, File>() {
184 @Override
185 public File fun(PsiFile file) {
186 VirtualFile virtualFile = file.getVirtualFile();
187 if (virtualFile == null) return null;
188
189 return VfsUtilCore.virtualToIoFile(virtualFile);
190 }
191 }
192 );
193 }
194
195 @Override
196 public byte[] asByteArray() {
197 done();
198 return builderFactory.asBytes(generators.get(relativeClassFilePath).classBuilder);
199 }
200
201 @Override
202 public String asText() {
203 done();
204 return builderFactory.asText(generators.get(relativeClassFilePath).classBuilder);
205 }
206 }
207
208 private static final class ClassBuilderAndSourceFileList {
209 private final ClassBuilder classBuilder;
210 private final Collection<? extends PsiFile> sourceFiles;
211
212 private ClassBuilderAndSourceFileList(ClassBuilder classBuilder, Collection<? extends PsiFile> sourceFiles) {
213 this.classBuilder = classBuilder;
214 this.sourceFiles = sourceFiles;
215 }
216 }
217 }