DEX/Parser.hpp

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/* Copyright 2017 - 2025 R. Thomas
 * Copyright 2017 - 2025 Quarkslab
 *
 * 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.
 */
#ifndef LIEF_DEX_PARSER_H
#define LIEF_DEX_PARSER_H
 
#include <memory>
#include <vector>
#include <string>
#include <unordered_map>
 
#include "LIEF/visibility.h"
#include "LIEF/DEX/types.hpp"
 
namespace LIEF {
class VectorStream;
 
namespace DEX {
class Class;
class Method;
class Field;
class File;
class Type;

class LIEF_API Parser {
  public:

  static std::unique_ptr<File> parse(const std::string& file);
  static std::unique_ptr<File> parse(std::vector<uint8_t> data, const std::string& name = "");
 
  Parser& operator=(const Parser& copy) = delete;
  Parser(const Parser& copy)            = delete;
 
  private:
  Parser();
  Parser(const std::string& file);
  Parser(std::vector<uint8_t> data);
  ~Parser();
 
  void init(const std::string& name, dex_version_t version);
 
  template<typename DEX_T>
  void parse_file();
 
  template<typename DEX_T>
  void parse_header();
 
  template<typename DEX_T>
  void parse_map();
 
  template<typename DEX_T>
  void parse_strings();
 
  template<typename DEX_T>
  void parse_types();
 
  template<typename DEX_T>
  void parse_fields();
 
  template<typename DEX_T>
  void parse_prototypes();
 
  template<typename DEX_T>
  void parse_methods();
 
  template<typename DEX_T>
  void parse_classes();
 
  template<typename DEX_T>
  void parse_class_data(uint32_t offset, Class& cls);
 
  template<typename DEX_T>
  void parse_field(size_t index, Class& cls, bool is_static);
 
  template<typename DEX_T>
  void parse_method(size_t index, Class& cls, bool is_virtual);
 
  template<typename DEX_T>
  void parse_code_info(uint32_t offset, Method& method);
 
  void resolve_inheritance();
 
  void resolve_external_methods();
 
  void resolve_external_fields();
 
  void resolve_types();
 
  std::unique_ptr<File> file_;
 
  // Map of inheritance relationship when parsing classes ('parse_classes')
  // The key is the parent class name of the value
  std::unordered_multimap<std::string, Class*> inheritance_;
 
  // Map of method/class relationship when parsing methods ('parse_methods')
  // The key is the Class name in which the method is defined
  std::unordered_multimap<std::string, Method*> class_method_map_;
 
  // Map of field/class relationship when parsing fields ('parse_fields')
  // The key is the Class name in which the field is defined
  std::unordered_multimap<std::string, Field*> class_field_map_;
 
  std::unordered_multimap<std::string, Type*> class_type_map_;
 
  std::unique_ptr<VectorStream> stream_;
};
 
} // namespace DEX
} // namespace LIEF
#endif