| // 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 <Foundation/Foundation.h> |
| |
| #import "Expression.h" |
| |
| typedef enum { |
| kAdd, |
| kSubtract, |
| kMultiply, |
| kDivide |
| } Operation; |
| |
| @interface Equation : Expression |
| |
| @property (nonatomic, assign) Operation operation; |
| |
| - (id)initWithOperation:(Operation)operation; |
| - (NSArray *)children; |
| - (void)addExpressionAsChild:(Expression *)child; |
| |
| @end |
