ext/scintilla/lexlib/LexerModule.h

   1 // Scintilla source code edit control
   2 /** @file LexerModule.h
   3  ** Colourise for particular languages.
   4  **/
   5 // Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
   6 // The License.txt file describes the conditions under which this software may be distributed.
   7
   8 #ifndef LEXERMODULE_H
   9 #define LEXERMODULE_H
  10
  11 #ifdef SCI_NAMESPACE
  12 namespace Scintilla {
  13 #endif
  14
  15 class Accessor;
  16 class WordList;
  17
  18 typedef void (*LexerFunction)(unsigned int startPos, int lengthDoc, int initStyle,
  19                   WordList *keywordlists[], Accessor &styler);
  20 typedef ILexer *(*LexerFactoryFunction)();
  21
  22 /**
  23  * A LexerModule is responsible for lexing and folding a particular language.
  24  * The class maintains a list of LexerModules which can be searched to find a
  25  * module appropriate to a particular language.
  26  */
  27 class LexerModule {
  28 protected:
  29         int language;
  30         LexerFunction fnLexer;
  31         LexerFunction fnFolder;
  32         LexerFactoryFunction fnFactory;
  33         const char * const * wordListDescriptions;
  34         int styleBits;
  35
  36 public:
  37         const char *languageName;
  38         LexerModule(int language_,
  39                 LexerFunction fnLexer_,
  40                 const char *languageName_=0,
  41                 LexerFunction fnFolder_=0,
  42                 const char * const wordListDescriptions_[] = NULL,
  43                 int styleBits_=5);
  44         LexerModule(int language_,
  45                 LexerFactoryFunction fnFactory_,
  46                 const char *languageName_,
  47                 const char * const wordListDescriptions_[] = NULL,
  48                 int styleBits_=8);
  49         virtual ~LexerModule() {
  50         }
  51         int GetLanguage() const { return language; }
  52
  53         // -1 is returned if no WordList information is available
  54         int GetNumWordLists() const;
  55         const char *GetWordListDescription(int index) const;
  56
  57         int GetStyleBitsNeeded() const;
  58
  59         ILexer *Create() const;
  60
  61         virtual void Lex(unsigned int startPos, int length, int initStyle,
  62                   WordList *keywordlists[], Accessor &styler) const;
  63         virtual void Fold(unsigned int startPos, int length, int initStyle,
  64                   WordList *keywordlists[], Accessor &styler) const;
  65
  66         friend class Catalogue;
  67 };
  68
  69 inline int Maximum(int a, int b) {
  70         return (a > b) ? a : b;
  71 }
  72
  73 // Shut up annoying Visual C++ warnings:
  74 #ifdef _MSC_VER
  75 #pragma warning(disable: 4244 4309 4514 4710)
  76 #endif
  77
  78 #ifdef SCI_NAMESPACE
  79 }
  80 #endif
  81
  82 #endif