ext/scintilla/lexlib/LexerNoExceptions.cxx

   1 // Scintilla source code edit control
   2 /** @file LexerNoExceptions.cxx
   3  ** A simple lexer with no state which does not throw exceptions so can be used in an external lexer.
   4  **/
   5 // Copyright 1998-2010 by Neil Hodgson <neilh@scintilla.org>
   6 // The License.txt file describes the conditions under which this software may be distributed.
   7
   8 #include <cstdlib>
   9 #include <cassert>
  10
  11 #include "ILexer.h"
  12 #include "Scintilla.h"
  13 #include "SciLexer.h"
  14
  15 #include "PropSetSimple.h"
  16 #include "WordList.h"
  17 #include "LexAccessor.h"
  18 #include "Accessor.h"
  19 #include "LexerModule.h"
  20 #include "LexerBase.h"
  21 #include "LexerNoExceptions.h"
  22
  23 using namespace Scintilla;
  24
  25 Sci_Position SCI_METHOD LexerNoExceptions::PropertySet(const char *key, const char *val) {
  26         try {
  27                 return LexerBase::PropertySet(key, val);
  28         } catch (...) {
  29                 // Should not throw into caller as may be compiled with different compiler or options
  30         }
  31         return -1;
  32 }
  33
  34 Sci_Position SCI_METHOD LexerNoExceptions::WordListSet(int n, const char *wl) {
  35         try {
  36                 return LexerBase::WordListSet(n, wl);
  37         } catch (...) {
  38                 // Should not throw into caller as may be compiled with different compiler or options
  39         }
  40         return -1;
  41 }
  42
  43 void SCI_METHOD LexerNoExceptions::Lex(Sci_PositionU startPos, Sci_Position lengthDoc, int initStyle, IDocument *pAccess) {
  44         try {
  45                 Accessor astyler(pAccess, &props);
  46                 Lexer(startPos, lengthDoc, initStyle, pAccess, astyler);
  47                 astyler.Flush();
  48         } catch (...) {
  49                 // Should not throw into caller as may be compiled with different compiler or options
  50                 pAccess->SetErrorStatus(SC_STATUS_FAILURE);
  51         }
  52 }
  53 void SCI_METHOD LexerNoExceptions::Fold(Sci_PositionU startPos, Sci_Position lengthDoc, int initStyle, IDocument *pAccess) {
  54         try {
  55                 Accessor astyler(pAccess, &props);
  56                 Folder(startPos, lengthDoc, initStyle, pAccess, astyler);
  57                 astyler.Flush();
  58         } catch (...) {
  59                 // Should not throw into caller as may be compiled with different compiler or options
  60                 pAccess->SetErrorStatus(SC_STATUS_FAILURE);
  61         }
  62 }