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// Scintilla source code edit control
/** @file LexerModule.h
** Colourise for particular languages.
**/
// Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.
#ifndef LEXERMODULE_H
#define LEXERMODULE_H
namespace Scintilla {
class Accessor;
class WordList;
struct LexicalClass;
typedef void (*LexerFunction)(Sci_PositionU startPos, Sci_Position lengthDoc, int initStyle,
WordList *keywordlists[], Accessor &styler);
typedef ILexer *(*LexerFactoryFunction)();
/**
* A LexerModule is responsible for lexing and folding a particular language.
* The Catalogue class maintains a list of LexerModules which can be searched to find a
* module appropriate to a particular language.
* The ExternalLexerModule subclass holds lexers loaded from DLLs or shared libraries.
*/
class LexerModule {
protected:
int language;
LexerFunction fnLexer;
LexerFunction fnFolder;
LexerFactoryFunction fnFactory;
const char * const * wordListDescriptions;
const LexicalClass *lexClasses;
size_t nClasses;
public:
const char *languageName;
LexerModule(
int language_,
LexerFunction fnLexer_,
const char *languageName_=nullptr,
LexerFunction fnFolder_= nullptr,
const char * const wordListDescriptions_[]=nullptr,
const LexicalClass *lexClasses_=nullptr,
size_t nClasses_=0) noexcept;
LexerModule(
int language_,
LexerFactoryFunction fnFactory_,
const char *languageName_,
const char * const wordListDescriptions_[]=nullptr) noexcept;
int GetLanguage() const noexcept;
// -1 is returned if no WordList information is available
int GetNumWordLists() const noexcept;
const char *GetWordListDescription(int index) const noexcept;
const LexicalClass *LexClasses() const noexcept;
size_t NamedStyles() const noexcept;
ILexer *Create() const;
void Lex(Sci_PositionU startPos, Sci_Position lengthDoc, int initStyle,
WordList *keywordlists[], Accessor &styler) const;
void Fold(Sci_PositionU startPos, Sci_Position lengthDoc, int initStyle,
WordList *keywordlists[], Accessor &styler) const;
friend class CatalogueModules;
};
inline int Maximum(int a, int b) noexcept {
return (a > b) ? a : b;
}
// Shut up annoying Visual C++ warnings:
#ifdef _MSC_VER
#pragma warning(disable: 4244 4456 4457)
#endif
// Turn off shadow warnings for lexers as may be maintained by others
#if defined(__GNUC__)
#pragma GCC diagnostic ignored "-Wshadow"
#endif
// Clang doesn't like omitting braces in array initialization but they just add
// noise to LexicalClass arrays in lexers
#if defined(__clang__)
#pragma clang diagnostic ignored "-Wmissing-braces"
#endif
}
#endif
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