| // Copyright 2016 The Bazel Authors. All rights reserved. |
| // |
| // 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.google.devtools.build.lib.rules.cpp; |
| |
| import com.google.devtools.build.lib.actions.Artifact; |
| import com.google.devtools.build.lib.cmdline.Label; |
| |
| /** A source file that is an input to a c++ compilation. */ |
| public abstract class CppSource { |
| private final Artifact source; |
| private final Label label; |
| |
| /** |
| * Types of sources. |
| */ |
| public enum Type { |
| SOURCE, |
| HEADER, |
| CLIF_INPUT_PROTO, |
| } |
| |
| public CppSource(Artifact source, Label label) { |
| this.source = source; |
| this.label = label; |
| } |
| |
| /** |
| * Returns the actual source file. |
| */ |
| public Artifact getSource() { |
| return source; |
| } |
| |
| /** |
| * Returns the label from which this source arises in the build graph. |
| */ |
| public Label getLabel() { |
| return label; |
| } |
| |
| /** |
| * Returns the type of this source. |
| */ |
| abstract Type getType(); |
| |
| private static class SourceCppSource extends CppSource { |
| |
| protected SourceCppSource(Artifact source, Label label) { |
| super(source, label); |
| } |
| |
| @Override |
| public Type getType() { |
| return Type.SOURCE; |
| } |
| } |
| |
| private static class HeaderCppSource extends CppSource { |
| protected HeaderCppSource(Artifact source, Label label) { |
| super(source, label); |
| } |
| |
| @Override |
| public Type getType() { |
| return Type.HEADER; |
| } |
| } |
| |
| private static class ClifProtoCppSource extends CppSource { |
| protected ClifProtoCppSource(Artifact source, Label label) { |
| super(source, label); |
| } |
| |
| @Override |
| public Type getType() { |
| return Type.CLIF_INPUT_PROTO; |
| } |
| } |
| |
| /** |
| * Creates a {@code CppSource}. |
| * |
| * @param source the actual source file |
| * @param label the label from which this source arises in the build graph |
| * @param type type of the source file. |
| */ |
| static CppSource create(Artifact source, Label label, Type type) { |
| switch (type) { |
| case SOURCE: |
| return new SourceCppSource(source, label); |
| case HEADER: |
| return new HeaderCppSource(source, label); |
| case CLIF_INPUT_PROTO: |
| return new ClifProtoCppSource(source, label); |
| default: |
| throw new IllegalStateException("Unhandled CppSource type: " + type); |
| } |
| } |
| } |