text: /*
  * The MIT License (MIT)
  *
  * Copyright (c) Microsoft Corporation
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
  * to deal in the Software without restriction, including without limitation
  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  * and/or sell copies of the Software, and to permit persons to whom the
  * Software is furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be included
  * in all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  * OTHER DEALINGS IN THE SOFTWARE.
  *
  */
  
  #include "exceptionhandling.h"
  #include "stack.h"
  
  ExceptionHandler* ExceptionHandlerManager::SetRootHandler(Label handlerLabel, ExceptionVars vars) {
      auto rootHandler = new ExceptionHandler(
              0,
              vars,
              handlerLabel,
              ValueStack(),
              EhfNone,
              nullptr);
      m_exceptionHandlers.push_back(
          rootHandler
      );
      return m_exceptionHandlers[0];
  }
  
  ExceptionHandler * ExceptionHandlerManager::AddSetupFinallyHandler(Label handlerLabel, ValueStack stack,
                                                                     ExceptionHandler *currentHandler, ExceptionVars vars,
                                                                     unsigned long handlerIndex) {
      auto newHandler = new ExceptionHandler(
              m_exceptionHandlers.size(),
              vars,
              handlerLabel,
              stack,
              EhfTryFinally,
              currentHandler);
      m_handlerIndexes[handlerIndex] = newHandler;
  
      m_exceptionHandlers.push_back(
          newHandler
      );
      return newHandler;
  }
  
  ExceptionHandler* ExceptionHandlerManager::GetRootHandler() {
      return m_exceptionHandlers[0];
  }
  
  bool ExceptionHandlerManager::Empty() {
      return m_exceptionHandlers.empty();
  }
  
  bool ExceptionHandlerManager::IsHandlerAtOffset(size_t offset) {
      return m_handlerIndexes.find(offset) != m_handlerIndexes.end();
  }
  
  ExceptionHandler* ExceptionHandlerManager::HandlerAtOffset(size_t offset) {
      return m_handlerIndexes.find(offset)->second;
  }
  
  vector<ExceptionHandler*> ExceptionHandlerManager::GetHandlers() {
      return m_exceptionHandlers;
  }
  
  ehFlags operator | (ehFlags lhs, ehFlags rhs) {
      return (ehFlags)(static_cast<int>(lhs) | static_cast<int>(rhs));
  }
  
  ehFlags operator |= (ehFlags& lhs, ehFlags rhs) {
      lhs = (ehFlags)(static_cast<int>(lhs) | static_cast<int>(rhs));
      return lhs;
  }
  