// 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.QueryFunction; import java.util.ArrayList; import java.util.List; import java.util.concurrent.ForkJoinPool; /** * A label(attr_name, argument) expression, which computes the set of targets * whose labels appear in the specified attribute of some rule in 'argument'. * *
expr ::= LABELS '(' WORD ',' expr ')'* * Example: *
* labels(srcs, //foo) The 'srcs' source files to the //foo rule. **/ class LabelsFunction implements QueryFunction { LabelsFunction() { } @Override public String getName() { return "labels"; } @Override public int getMandatoryArguments() { return 2; } @Override public List