| // Copyright 2021 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.bazel.bzlmod; |
| |
| import com.google.auto.value.AutoValue; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.ImmutableMap; |
| import com.google.devtools.build.lib.packages.Attribute; |
| import com.google.devtools.build.lib.starlarkbuildapi.repository.RepositoryModuleApi.TagClassApi; |
| import net.starlark.java.syntax.Location; |
| |
| /** |
| * Represents a tag class, which is a "class" of {@link Tag}s that share the same attribute schema. |
| */ |
| @AutoValue |
| public abstract class TagClass implements TagClassApi { |
| /** The list of attributes of this tag class. */ |
| public abstract ImmutableList<Attribute> getAttributes(); |
| |
| /** Documentation about this tag class. */ |
| public abstract String getDoc(); |
| |
| /** The Starlark code location where this tag class was defined. */ |
| public abstract Location getLocation(); |
| |
| /** |
| * A mapping from the <em>public</em> name of an attribute to the position of said attribute in |
| * {@link #getAttributes}. |
| */ |
| public abstract ImmutableMap<String, Integer> getAttributeIndices(); |
| |
| public static TagClass create( |
| ImmutableList<Attribute> attributes, String doc, Location location) { |
| ImmutableMap.Builder<String, Integer> attributeIndicesBuilder = |
| ImmutableMap.builderWithExpectedSize(attributes.size()); |
| for (int i = 0; i < attributes.size(); i++) { |
| attributeIndicesBuilder.put(attributes.get(i).getPublicName(), i); |
| } |
| return new AutoValue_TagClass( |
| attributes, doc, location, attributeIndicesBuilder.buildOrThrow()); |
| } |
| } |