| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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> |
| #include <string> |
| #include <vector> |
| |
| #define WXJSObjectFree(obj) \ |
| if (obj) delete obj; |
| |
| typedef enum : NSUInteger { |
| WXJSExpressionTypeUnary, |
| WXJSExpressionTypeBinary, |
| WXJSExpressionTypeBinaryConditional, |
| } WXJSExpressionType; |
| |
| struct WXJSExpression { |
| virtual ~WXJSExpression() {} |
| template <class T> bool is() { |
| return dynamic_cast<T *>(this) != NULL; |
| } |
| }; |
| |
| struct WXJSLiteral :WXJSExpression { |
| }; |
| |
| struct WXJSNullLiteral : WXJSLiteral { |
| }; |
| |
| struct WXJSStringLiteral : WXJSLiteral { |
| std::string value; |
| }; |
| |
| struct WXJSNumericLiteral : WXJSLiteral { |
| double value; |
| }; |
| |
| struct WXJSBooleanLiteral : WXJSLiteral { |
| bool value; |
| }; |
| |
| struct WXJSIdentifier : WXJSExpression { |
| std::string name; |
| }; |
| |
| struct WXJSMemberExpression : WXJSExpression { |
| virtual ~WXJSMemberExpression() { |
| WXJSObjectFree(object); |
| WXJSObjectFree(property); |
| } |
| WXJSExpression *object = nullptr; |
| WXJSExpression *property = nullptr; |
| bool computed; |
| }; |
| |
| struct WXJSArrayExpression : WXJSExpression { |
| virtual ~WXJSArrayExpression() { |
| for (WXJSExpression * expr : expressions) { |
| delete expr; |
| } |
| } |
| std::vector<WXJSExpression *> expressions; |
| }; |
| |
| struct WXJSUnaryExpression : WXJSExpression { |
| virtual ~WXJSUnaryExpression() { |
| WXJSObjectFree(argument); |
| } |
| |
| std::string operator_; |
| bool prefix; |
| WXJSExpression *argument = nullptr; |
| }; |
| |
| struct WXJSBinaryExpression : WXJSExpression { |
| virtual ~WXJSBinaryExpression() { |
| WXJSObjectFree(left); |
| WXJSObjectFree(right); |
| } |
| |
| std::string operator_; |
| WXJSExpression *left = nullptr; |
| WXJSExpression *right = nullptr; |
| }; |
| |
| struct WXJSLogicalExpression : WXJSExpression { |
| virtual ~WXJSLogicalExpression() { |
| WXJSObjectFree(left); |
| WXJSObjectFree(right); |
| } |
| |
| std::string operator_; |
| WXJSExpression *left = nullptr; |
| WXJSExpression *right = nullptr; |
| }; |
| |
| struct WXJSConditionalExpression : WXJSExpression { |
| virtual ~WXJSConditionalExpression() { |
| WXJSObjectFree(test); |
| WXJSObjectFree(alternate); |
| WXJSObjectFree(consequent); |
| } |
| |
| WXJSExpression *test = nullptr; |
| WXJSExpression *alternate = nullptr; |
| WXJSExpression *consequent = nullptr; |
| }; |
| |
| |
| @interface WXJSASTParser : NSObject |
| |
| + (instancetype)parserWithScript:(NSString *)script; |
| |
| - (WXJSExpression *)parseExpression; |
| |
| @end |