| // Copyright 2015 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.syntax; |
| |
| /** A Starlark value that supports membership tests, {@code key in object}. */ |
| // TODO(adonovan): merge with SkylarkIndexable: no type supports 'x in y' without y[x], |
| // and 'x in y' can be defined in terms of y[x], at least as a default implementation. |
| // (Implementations of 'x in y' may choose to interpret failure of y[x] as false or a failure.) |
| public interface SkylarkQueryable extends StarlarkValue { |
| |
| /** Returns whether the key is in the object. */ |
| boolean containsKey(StarlarkSemantics semantics, Object key) throws EvalException; |
| } |
