/*
 * Copyright 2019 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.recomp;

import org.gradle.api.internal.tasks.compile.JavaCompileSpec;
import org.gradle.api.tasks.WorkResult;

/**
 * In a typical incremental recompilation, there're three steps:
 * First, examine the incremental change files to get the classes to be recompiled: {@link #provideRecompilationSpec(CurrentCompilation, PreviousCompilation)}
 * Second, initialize the recompilation (e.g. delete stale class files and narrow down the source files to be recompiled): {@link #initializeCompilation(JavaCompileSpec, RecompilationSpec)}
 * Third, decorate the compilation result if necessary: {@link #decorateResult(RecompilationSpec, WorkResult)}, for example, notify whether current recompilation is full recompilation.
 */
public interface RecompilationSpecProvider {
    boolean isIncremental();

    RecompilationSpec provideRecompilationSpec(CurrentCompilation current, PreviousCompilation previous);

    void initializeCompilation(JavaCompileSpec spec, RecompilationSpec recompilationSpec);

    WorkResult decorateResult(RecompilationSpec recompilationSpec, WorkResult workResult);
}
