| // 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. |
| |
| #import "Expression.h" |
| |
| @implementation Expression |
| |
| - (double)calculate { |
| [self doesNotRecognizeSelector:_cmd]; |
| return NAN; |
| } |
| |
| - (BOOL)isEqual:(id)object { |
| [self doesNotRecognizeSelector:_cmd]; |
| return NO; |
| } |
| |
| - (NSString *)description { |
| [self doesNotRecognizeSelector:_cmd]; |
| return nil; |
| } |
| |
| @end |
