ext/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 #else
  14 #define EXT_LEXER_DECL
  15 #endif
  16
  17 #ifdef SCI_NAMESPACE
  18 namespace Scintilla {
  19 #endif
  20
  21 // External Lexer function definitions...
  22 typedef void (EXT_LEXER_DECL *ExtLexerFunction)(unsigned int lexer, unsigned int startPos, int length, int initStyle,
  23                   char *words[], WindowID window, char *props);
  24 typedef void (EXT_LEXER_DECL *ExtFoldFunction)(unsigned int lexer, unsigned int startPos, int length, int initStyle,
  25                   char *words[], WindowID window, char *props);
  26 typedef void* (EXT_LEXER_DECL *GetLexerFunction)(unsigned int Index);
  27 typedef int (EXT_LEXER_DECL *GetLexerCountFn)();
  28 typedef void (EXT_LEXER_DECL *GetLexerNameFn)(unsigned int Index, char *name, int buflength);
  29
  30 //class DynamicLibrary;
  31
  32 /// Sub-class of LexerModule to use an external lexer.
  33 class ExternalLexerModule : protected LexerModule {
  34 protected:
  35         ExtLexerFunction fneLexer;
  36         ExtFoldFunction fneFolder;
  37         int externalLanguage;
  38         char name[100];
  39 public:
  40         ExternalLexerModule(int language_, LexerFunction fnLexer_,
  41                 const char *languageName_=0, LexerFunction fnFolder_=0) : LexerModule(language_, fnLexer_, 0, fnFolder_){
  42                 strncpy(name, languageName_, sizeof(name));
  43                 languageName = name;
  44         };
  45         virtual void Lex(unsigned int startPos, int lengthDoc, int initStyle,
  46                                         WordList *keywordlists[], Accessor &styler) const;
  47         virtual void Fold(unsigned int startPos, int lengthDoc, int initStyle,
  48                                         WordList *keywordlists[], Accessor &styler) const;
  49         virtual void SetExternal(ExtLexerFunction fLexer, ExtFoldFunction fFolder, int index);
  50 };
  51
  52 /// LexerMinder points to an ExternalLexerModule - so we don't leak them.
  53 class LexerMinder {
  54 public:
  55         ExternalLexerModule *self;
  56         LexerMinder *next;
  57 };
  58
  59 /// LexerLibrary exists for every External Lexer DLL, contains LexerMinders.
  60 class LexerLibrary {
  61         DynamicLibrary  *lib;
  62         LexerMinder             *first;
  63         LexerMinder             *last;
  64
  65 public:
  66         LexerLibrary(const char* ModuleName);
  67         ~LexerLibrary();
  68         void Release();
  69
  70         LexerLibrary    *next;
  71         SString                 m_sModuleName;
  72 };
  73
  74 /// LexerManager manages external lexers, contains LexerLibrarys.
  75 class LexerManager {
  76 public:
  77         ~LexerManager();
  78
  79         static LexerManager *GetInstance();
  80         static void DeleteInstance();
  81
  82         void Load(const char* path);
  83         void Clear();
  84
  85 private:
  86         LexerManager();
  87         static LexerManager *theInstance;
  88
  89         void LoadLexerLibrary(const char* module);
  90         LexerLibrary *first;
  91         LexerLibrary *last;
  92 };
  93
  94 class LMMinder {
  95 public:
  96         ~LMMinder();
  97 };
  98
  99 #ifdef SCI_NAMESPACE
 100 }
 101 #endif
 102
 103 #endif