src/stc/scintilla/src/ExternalLexer.h

   1 // Scintilla source code edit control
   2 /** @file ExternalLexer.h
   3  ** Support external lexers in DLLs.
   4  **/
   5 // Copyright 2001 Simon Steele <ss@pnotepad.org>, portions copyright Neil Hodgson.
   6 // The License.txt file describes the conditions under which this software may be distributed.
   7
   8 #ifndef EXTERNALLEXER_H
   9 #define EXTERNALLEXER_H
  10
  11 #if PLAT_WIN
  12 #define EXT_LEXER_DECL __stdcall
  13 #elif PLAT_GTK
  14 #define EXT_LEXER_DECL
  15 #endif
  16
  17 #if PLAT_WX
  18 #ifdef __WXMSW__
  19 #define EXT_LEXER_DECL __stdcall
  20 #else
  21 #define EXT_LEXER_DECL
  22 #endif
  23 #endif
  24
  25 // External Lexer function definitions...
  26 typedef void (EXT_LEXER_DECL *ExtLexerFunction)(unsigned int lexer, unsigned int startPos, int length, int initStyle,
  27                   char *words[], WindowID window, char *props);
  28 typedef void (EXT_LEXER_DECL *ExtFoldFunction)(unsigned int lexer, unsigned int startPos, int length, int initStyle,
  29                   char *words[], WindowID window, char *props);
  30 typedef void* (EXT_LEXER_DECL *GetLexerFunction)(unsigned int Index);
  31 typedef int (EXT_LEXER_DECL *GetLexerCountFn)();
  32 typedef void (EXT_LEXER_DECL *GetLexerNameFn)(unsigned int Index, char *name, int buflength);
  33
  34 //class DynamicLibrary;
  35
  36 /// Sub-class of LexerModule to use an external lexer.
  37 class ExternalLexerModule : protected LexerModule {
  38 protected:
  39         ExtLexerFunction fneLexer;
  40         ExtFoldFunction fneFolder;
  41         int externalLanguage;
  42         char name[100];
  43 public:
  44         ExternalLexerModule(int language_, LexerFunction fnLexer_,
  45                 const char *languageName_=0, LexerFunction fnFolder_=0) : LexerModule(language_, fnLexer_, 0, fnFolder_){
  46                 strncpy(name, languageName_, sizeof(name));
  47                 languageName = name;
  48         };
  49         virtual void Lex(unsigned int startPos, int lengthDoc, int initStyle,
  50                                         WordList *keywordlists[], Accessor &styler) const;
  51         virtual void Fold(unsigned int startPos, int lengthDoc, int initStyle,
  52                                         WordList *keywordlists[], Accessor &styler) const;
  53         virtual void SetExternal(ExtLexerFunction fLexer, ExtFoldFunction fFolder, int index);
  54 };
  55
  56 /// LexerMinder points to an ExternalLexerModule - so we don't leak them.
  57 class LexerMinder {
  58 public:
  59         ExternalLexerModule *self;
  60         LexerMinder *next;
  61 };
  62
  63 /// LexerLibrary exists for every External Lexer DLL, contains LexerMinders.
  64 class LexerLibrary {
  65         DynamicLibrary  *lib;
  66         LexerMinder             *first;
  67         LexerMinder             *last;
  68
  69 public:
  70         LexerLibrary(const char* ModuleName);
  71         ~LexerLibrary();
  72         void Release();
  73
  74         LexerLibrary    *next;
  75         SString                 m_sModuleName;
  76 };
  77
  78 /// LexerManager manages external lexers, contains LexerLibrarys.
  79 class LexerManager {
  80 public:
  81         ~LexerManager();
  82
  83         static LexerManager *GetInstance();
  84         static void DeleteInstance();
  85
  86         void Load(const char* path);
  87         void Clear();
  88
  89 private:
  90         LexerManager();
  91         static LexerManager *theInstance;
  92
  93         void LoadLexerLibrary(const char* module);
  94         LexerLibrary *first;
  95         LexerLibrary *last;
  96 };
  97
  98 class LMMinder {
  99 public:
 100         ~LMMinder();
 101 };
 102
 103 #endif