// Scintilla source code edit control
/** @file DefaultLexer.h
 ** A lexer base class with default empty implementations of methods.
 ** For lexers that do not support all features so do not need real implementations.
 ** Does have real implementation for style metadata.
 **/
// Copyright 2017 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.

#ifndef DEFAULTLEXER_H
#define DEFAULTLEXER_H

namespace Lexilla {

struct OptionSetInterface;	// Forward declaration

// A simple lexer with no state
class DefaultLexer : public Scintilla::ILexer5 {
	const char *languageName;
	int language;
	const LexicalClass *lexClasses;
	size_t nClasses;
	OptionSetInterface *osi = nullptr;
public:
	DefaultLexer(const char *languageName_, int language_,
		const LexicalClass *lexClasses_ = nullptr, size_t nClasses_ = 0);
	virtual ~DefaultLexer();
	void SetOptionSet(OptionSetInterface *osi_) noexcept {
		this->osi = osi_;
	}

	void SCI_METHOD Release() override;
	int SCI_METHOD Version() const override;
	const char * SCI_METHOD PropertyNames() override;
	int SCI_METHOD PropertyType(const char *name) override;
	const char * SCI_METHOD DescribeProperty(const char *name) override;
	Sci_Position SCI_METHOD PropertySet(const char *key, const char *val) override;
	const char * SCI_METHOD DescribeWordListSets() override;
	Sci_Position SCI_METHOD WordListSet(int n, const char *wl) override;
	void SCI_METHOD Lex(Sci_PositionU startPos, Sci_Position lengthDoc, int initStyle, Scintilla::IDocument *pAccess) override = 0;
	void SCI_METHOD Fold(Sci_PositionU startPos, Sci_Position lengthDoc, int initStyle, Scintilla::IDocument *pAccess) override;
	void * SCI_METHOD PrivateCall(int operation, void *pointer) override;
	int SCI_METHOD LineEndTypesSupported() override;
	int SCI_METHOD AllocateSubStyles(int styleBase, int numberStyles) override;
	int SCI_METHOD SubStylesStart(int styleBase) override;
	int SCI_METHOD SubStylesLength(int styleBase) override;
	int SCI_METHOD StyleFromSubStyle(int subStyle) override;
	int SCI_METHOD PrimaryStyleFromStyle(int style) override;
	void SCI_METHOD FreeSubStyles() override;
	void SCI_METHOD SetIdentifiers(int style, const char *identifiers) override;
	int SCI_METHOD DistanceToSecondaryStyles() override;
	const char * SCI_METHOD GetSubStyleBases() override;
	int SCI_METHOD NamedStyles() override;
	const char * SCI_METHOD NameOfStyle(int style) override;
	const char * SCI_METHOD TagsOfStyle(int style) override;
	const char * SCI_METHOD DescriptionOfStyle(int style) override;
	// ILexer5 methods
	const char * SCI_METHOD GetName() override;
	int SCI_METHOD GetIdentifier() override;
	const char *SCI_METHOD PropertyGet(const char *key) override;
};

}

#endif
