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// Scintilla source code edit control
/** @file ExternalLexer.h
** Support external lexers in DLLs.
**/
// Copyright 2001 Simon Steele <ss@pnotepad.org>, portions copyright Neil Hodgson.
// The License.txt file describes the conditions under which this software may be distributed.
#ifndef EXTERNALLEXER_H
#define EXTERNALLEXER_H
// External Lexer function definitions...
typedef void (__stdcall *ExtLexerFunction)(unsigned int lexer, unsigned int startPos, int length, int initStyle,
char *words[], WindowID window, char *props);
typedef void (__stdcall *ExtFoldFunction)(unsigned int lexer, unsigned int startPos, int length, int initStyle,
char *words[], WindowID window, char *props);
typedef void* (__stdcall *GetLexerFunction)(unsigned int Index);
typedef int (__stdcall *GetLexerCountFn)();
typedef void (__stdcall *GetLexerNameFn)(unsigned int Index, char *name, int buflength);
// Sub-class of LexerModule to use an external lexer.
class ExternalLexerModule : protected LexerModule {
protected:
ExtLexerFunction fneLexer;
ExtFoldFunction fneFolder;
int externalLanguage;
char name[100];
public:
ExternalLexerModule(int language_, LexerFunction fnLexer_,
const char *languageName_=0, LexerFunction fnFolder_=0) : LexerModule(language_, fnLexer_, 0, fnFolder_){
strncpy(name, languageName_, sizeof(name));
languageName = name;
};
virtual void Lex(unsigned int startPos, int lengthDoc, int initStyle,
WordList *keywordlists[], Accessor &styler);
virtual void Fold(unsigned int startPos, int lengthDoc, int initStyle,
WordList *keywordlists[], Accessor &styler);
virtual void SetExternal(ExtLexerFunction fLexer, ExtFoldFunction fFolder, int index);
};
// LexerMinder points to an ExternalLexerModule - so we don't leak them.
class LexerMinder {
public:
ExternalLexerModule *self;
LexerMinder *next;
};
// LexerLibrary exists for every External Lexer DLL, contains LexerMinders.
class LexerLibrary {
public:
LexerLibrary(LPCTSTR ModuleName);
~LexerLibrary();
void Release();
// Variables
LexerLibrary *next;
SString m_sModuleName;
private:
HMODULE m_hModule;
LexerMinder *first;
LexerMinder *last;
};
// LexerManager manages external lexers, contains LexerLibrarys.
class LexerManager {
friend class LMMinder;
public:
LexerManager();
~LexerManager();
void Load();
static LexerManager *GetInstance();
private:
bool m_bLoaded;
void EnumerateLexers();
static int UseCount;
static LexerLibrary *first;
static LexerLibrary *last;
static LexerManager *firstlm;
};
class LMMinder {
public:
~LMMinder();
};
#endif
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