| // Copyright 2014 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.query2.engine; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.devtools.build.lib.query2.engine.QueryEnvironment.Argument; |
| import com.google.devtools.build.lib.query2.engine.QueryEnvironment.ArgumentType; |
| import com.google.devtools.build.lib.query2.engine.QueryEnvironment.FilteringQueryFunction; |
| import java.util.List; |
| |
| /** |
| * A kind(pattern, argument) filter expression, which computes the set of subset of nodes in |
| * 'argument' whose kind matches the unanchored regexp 'pattern'. |
| * |
| * <pre>expr ::= KIND '(' WORD ',' expr ')'</pre> |
| * |
| * Example patterns: |
| * |
| * <pre> |
| * ' file' Match all file targets. |
| * 'source file' Match all test source file targets. |
| * 'generated file' Match all test generated file targets. |
| * ' rule' Match all rule targets. |
| * 'foo_*' Match all rules starting with "foo_", |
| * 'test' Match all test (rule) targets. |
| * </pre> |
| * |
| * Note, the space before "file" is needed to prevent unwanted matches against (e.g.) "filegroup |
| * rule". |
| */ |
| public class KindFunction extends RegexFilterExpression { |
| public KindFunction() { |
| super(/*invert=*/ false); |
| } |
| |
| private KindFunction(boolean invert) { |
| super(invert); |
| } |
| |
| @Override |
| public FilteringQueryFunction invert() { |
| return new KindFunction(!invert); |
| } |
| |
| @Override |
| public String getName() { |
| return (invert ? "no" : "") + "kind"; |
| } |
| |
| @Override |
| protected String getPattern(List<Argument> args) { |
| return args.get(0).getWord(); |
| } |
| |
| @Override |
| public int getMandatoryArguments() { |
| return 2; |
| } |
| |
| @Override |
| public List<ArgumentType> getArgumentTypes() { |
| return ImmutableList.of(ArgumentType.WORD, ArgumentType.EXPRESSION); |
| } |
| |
| @Override |
| protected <T> String getFilterString(QueryEnvironment<T> env, List<Argument> args, T target) { |
| return env.getAccessor().getTargetKind(target); |
| } |
| } |