1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 #ifndef JAVA_LANG_BUILDER_H_ 17 #define JAVA_LANG_BUILDER_H_ 18 19 #include <iostream> 20 #include <sstream> 21 #include <vector> 22 23 // Build Java language code to instantiate views. 24 // 25 // This has a very small interface to make it easier to generate additional 26 // backends, such as a direct-to-DEX version. 27 class JavaLangViewBuilder { 28 public: 29 JavaLangViewBuilder(std::string package, std::string layout_name, std::ostream& out = std::cout) 30 : package_(package), layout_name_(layout_name), out_(out) {} 31 32 // Begin generating a class. Adds the package boilerplate, etc. 33 void Start() const; 34 // Finish generating a class, closing off any open curly braces, etc. 35 void Finish() const; 36 37 // Begin creating a view (i.e. process the opening tag) 38 void StartView(const std::string& class_name, bool is_viewgroup); 39 // Finish a view, after all of its child nodes have been processed. 40 void FinishView(); 41 42 private: 43 const std::string MakeVar(std::string prefix); 44 45 std::string const package_; 46 std::string const layout_name_; 47 48 std::ostream& out_; 49 50 size_t view_id_ = 0; 51 52 struct StackEntry { 53 // The class name for this view object 54 const std::string class_name; 55 56 // The variable name that is holding the view object 57 const std::string view_var; 58 59 // The variable name that holds the object's layout parameters 60 const std::string layout_params_var; 61 }; 62 std::vector<StackEntry> view_stack_; 63 }; 64 65 #endif // JAVA_LANG_BUILDER_H_ 66
