35 lines
1.3 KiB
Java
35 lines
1.3 KiB
Java
// Copyright 2017 The Bazel Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package com.google.devtools.common.options;
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import com.google.common.collect.ImmutableList;
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/**
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* A function from an option parser's static setup (what flags it knows about) to a list of
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* expansion Strings to use for one of its options.
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*/
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@FunctionalInterface
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public interface ExpansionFunction {
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/**
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* Compute the expansion for an option. May be called at any time during or after the {@link
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* OptionsParser}'s construction, or not at all.
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*
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* @param optionsData the parser's indexed information about its own options, before expansion
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* information is computed
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* @return An expansion to use on an empty list
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*/
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ImmutableList<String> getExpansion(IsolatedOptionsData optionsData);
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}
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