/*
* Copyright 2013 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.gradle.api.internal.tasks.compile.incremental;
import org.gradle.api.file.FileCollection;
import org.gradle.api.internal.tasks.compile.CleaningJavaCompiler;
import org.gradle.api.internal.tasks.compile.JavaCompileSpec;
import org.gradle.api.internal.tasks.compile.incremental.cache.CompileCaches;
import org.gradle.api.internal.tasks.compile.incremental.deps.ClassSetAnalysis;
import org.gradle.api.internal.tasks.compile.incremental.deps.ClassSetAnalysisData;
import org.gradle.api.internal.tasks.compile.incremental.jar.JarClasspathSnapshotMaker;
import org.gradle.api.internal.tasks.compile.incremental.jar.PreviousCompilation;
import org.gradle.api.logging.Logger;
import org.gradle.api.logging.Logging;
import org.gradle.api.tasks.incremental.IncrementalTaskInputs;
import org.gradle.language.base.internal.compile.Compiler;
public class IncrementalCompilerDecorator {
private static final Logger LOG = Logging.getLogger(IncrementalCompilerDecorator.class);
private final JarClasspathSnapshotMaker jarClasspathSnapshotMaker;
private final CompileCaches compileCaches;
private final CleaningJavaCompiler cleaningCompiler;
private final String displayName;
private final RecompilationSpecProvider staleClassDetecter;
private final ClassSetAnalysisUpdater classSetAnalysisUpdater;
private final CompilationSourceDirs sourceDirs;
private final FileCollection annotationProcessorPath;
private final IncrementalCompilationInitializer compilationInitializer;
public IncrementalCompilerDecorator(JarClasspathSnapshotMaker jarClasspathSnapshotMaker, CompileCaches compileCaches,
IncrementalCompilationInitializer compilationInitializer, CleaningJavaCompiler cleaningCompiler, String displayName,
RecompilationSpecProvider staleClassDetecter, ClassSetAnalysisUpdater classSetAnalysisUpdater,
CompilationSourceDirs sourceDirs, FileCollection annotationProcessorPath) {
this.jarClasspathSnapshotMaker = jarClasspathSnapshotMaker;
this.compileCaches = compileCaches;
this.compilationInitializer = compilationInitializer;
this.cleaningCompiler = cleaningCompiler;
this.displayName = displayName;
this.staleClassDetecter = staleClassDetecter;
this.classSetAnalysisUpdater = classSetAnalysisUpdater;
this.sourceDirs = sourceDirs;
this.annotationProcessorPath = annotationProcessorPath;
}
public Compiler<JavaCompileSpec> prepareCompiler(IncrementalTaskInputs inputs) {
Compiler<JavaCompileSpec> compiler = getCompiler(inputs, sourceDirs);
return new IncrementalCompilationFinalizer(compiler, jarClasspathSnapshotMaker, classSetAnalysisUpdater);
}
private Compiler<JavaCompileSpec> getCompiler(IncrementalTaskInputs inputs, CompilationSourceDirs sourceDirs) {
if (!inputs.isIncremental()) {
LOG.info("{} - is not incremental (e.g. outputs have changed, no previous execution, etc.).", displayName);
return cleaningCompiler;
}
if (!sourceDirs.canInferSourceRoots()) {
LOG.info("{} - is not incremental. Unable to infer the source directories.", displayName);
return cleaningCompiler;
}
if (!annotationProcessorPath.isEmpty()) {
LOG.info("{} - is not incremental. Annotation processors are present.", displayName);
return cleaningCompiler;
}
ClassSetAnalysisData data = compileCaches.getLocalClassSetAnalysisStore().get();
if (data == null) {
LOG.info("{} - is not incremental. No class analysis data available from the previous build.", displayName);
return cleaningCompiler;
}
PreviousCompilation previousCompilation = new PreviousCompilation(new ClassSetAnalysis(data), compileCaches.getLocalJarClasspathSnapshotStore(), compileCaches.getJarSnapshotCache());
return new SelectiveCompiler(inputs, previousCompilation, cleaningCompiler, staleClassDetecter, compilationInitializer, jarClasspathSnapshotMaker);
}
}