Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* This Source Code Form is subject to the terms of the Mozilla Public
       3             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : #ifndef GreekCasing_h_
       7             : #define GreekCasing_h_
       8             : 
       9             : #include <stdint.h>
      10             : #include "mozilla/Attributes.h"
      11             : 
      12             : namespace mozilla {
      13             : 
      14             : class GreekCasing {
      15             :   // When doing an Uppercase transform in Greek, we need to keep track of the
      16             :   // current state while iterating through the string, to recognize and process
      17             :   // diphthongs correctly. For clarity, we define a state for each vowel and
      18             :   // each vowel with accent, although a few of these do not actually need any
      19             :   // special treatment and could be folded into kStart.
      20             : private:
      21             :   enum GreekStates {
      22             :     kStart,
      23             :     kInWord,
      24             :     kAlpha,
      25             :     kEpsilon,
      26             :     kEta,
      27             :     kIota,
      28             :     kOmicron,
      29             :     kUpsilon,
      30             :     kOmega,
      31             :     kAlphaAcc,
      32             :     kEpsilonAcc,
      33             :     kEtaAcc,
      34             :     kEtaAccMarked,
      35             :     kIotaAcc,
      36             :     kOmicronAcc,
      37             :     kUpsilonAcc,
      38             :     kOmegaAcc,
      39             :     kOmicronUpsilon,
      40             :     kDiaeresis
      41             :   };
      42             : 
      43             : public:
      44             :   class State {
      45             :   public:
      46           0 :     State()
      47           0 :       : mState(kStart)
      48             :     {
      49           0 :     }
      50             : 
      51           0 :     MOZ_IMPLICIT State(const GreekStates& aState)
      52           0 :       : mState(aState)
      53             :     {
      54           0 :     }
      55             : 
      56           0 :     void Reset()
      57             :     {
      58           0 :       mState = kStart;
      59           0 :     }
      60             : 
      61           0 :     operator GreekStates() const
      62             :     {
      63           0 :       return mState;
      64             :     }
      65             : 
      66             :   private:
      67             :     GreekStates mState;
      68             :   };
      69             : 
      70             :   static uint32_t UpperCase(uint32_t aCh, State& aState,
      71             :                             bool& aMarkEtaPos, bool& aUpdateMarkedEta);
      72             : };
      73             : 
      74             : } // namespace mozilla
      75             : 
      76             : #endif