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 <stdlib.h>
   9 #include <string.h>
  10 #include <stdio.h>
  11 #include <stdarg.h>
  12 #include <assert.h>
  13 #include <ctype.h>
  14
  15 #include "ILexer.h"
  16 #include "Scintilla.h"
  17 #include "SciLexer.h"
  18
  19 #include "PropSetSimple.h"
  20 #include "WordList.h"
  21 #include "LexAccessor.h"
  22 #include "Accessor.h"
  23 #include "LexerModule.h"
  24 #include "LexerBase.h"
  25 #include "LexerNoExceptions.h"
  26
  27 #ifdef SCI_NAMESPACE
  28 using namespace Scintilla;
  29 #endif
  30
  31 int SCI_METHOD LexerNoExceptions::PropertySet(const char *key, const char *val) {
  32         try {
  33                 return LexerBase::PropertySet(key, val);
  34         } catch (...) {
  35                 // Should not throw into caller as may be compiled with different compiler or options
  36         }
  37         return -1;
  38 }
  39
  40 int SCI_METHOD LexerNoExceptions::WordListSet(int n, const char *wl) {
  41         try {
  42                 return LexerBase::WordListSet(n, wl);
  43         } catch (...) {
  44                 // Should not throw into caller as may be compiled with different compiler or options
  45         }
  46         return -1;
  47 }
  48
  49 void SCI_METHOD LexerNoExceptions::Lex(unsigned int startPos, int length, int initStyle, IDocument *pAccess) {
  50         try {
  51                 Accessor astyler(pAccess, &props);
  52                 Lexer(startPos, length, initStyle, pAccess, astyler);
  53                 astyler.Flush();
  54         } catch (...) {
  55                 // Should not throw into caller as may be compiled with different compiler or options
  56                 pAccess->SetErrorStatus(SC_STATUS_FAILURE);
  57         }
  58 }
  59 void SCI_METHOD LexerNoExceptions::Fold(unsigned int startPos, int length, int initStyle, IDocument *pAccess) {
  60         try {
  61                 Accessor astyler(pAccess, &props);
  62                 Folder(startPos, length, initStyle, pAccess, astyler);
  63                 astyler.Flush();
  64         } catch (...) {
  65                 // Should not throw into caller as may be compiled with different compiler or options
  66                 pAccess->SetErrorStatus(SC_STATUS_FAILURE);
  67         }
  68 }