Java tutorial
/* * Copyright 2015-present Facebook, Inc. * * 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 com.facebook.buck.cxx; import com.facebook.buck.rules.BuildRule; import com.facebook.buck.rules.RuleKeyBuilder; import com.facebook.buck.rules.SourcePath; import com.facebook.buck.rules.SourcePathResolver; import com.facebook.buck.rules.Tool; import com.google.common.base.Function; import com.google.common.base.Optional; import com.google.common.collect.ImmutableCollection; import com.google.common.collect.ImmutableList; import com.google.common.collect.ImmutableMap; public class DefaultPreprocessor implements Preprocessor { private final Tool tool; public DefaultPreprocessor(Tool tool) { this.tool = tool; } @Override public Optional<ImmutableList<String>> getExtraFlags() { return Optional.absent(); } @Override public Optional<ImmutableList<String>> getFlagsForColorDiagnostics() { return Optional.absent(); } @Override public Optional<Function<String, Iterable<String>>> getExtraLineProcessor() { return Optional.absent(); } @Override public boolean supportsHeaderMaps() { return false; } @Override public boolean supportsPrecompiledHeaders() { return false; } @Override public ImmutableCollection<BuildRule> getDeps(SourcePathResolver resolver) { return tool.getDeps(resolver); } @Override public ImmutableCollection<SourcePath> getInputs() { return tool.getInputs(); } @Override public ImmutableList<String> getCommandPrefix(SourcePathResolver resolver) { return tool.getCommandPrefix(resolver); } @Override public ImmutableMap<String, String> getEnvironment(SourcePathResolver resolver) { return tool.getEnvironment(resolver); } @Override public RuleKeyBuilder appendToRuleKey(RuleKeyBuilder builder) { return builder.setReflectively("tool", tool).setReflectively("type", getClass().getSimpleName()); } }