scintilla/lexlib/DefaultLexer.h

   1 // Scintilla source code edit control
   2 /** @file DefaultLexer.h
   3  ** A lexer base class with default empty implementations of methods.
   4  ** For lexers that do not support all features so do not need real implementations.
   5  ** Does have real implementation for style metadata.
   6  **/
   7 // Copyright 2017 by Neil Hodgson <neilh@scintilla.org>
   8 // The License.txt file describes the conditions under which this software may be distributed.
   9
  10 #ifndef DEFAULTLEXER_H
  11 #define DEFAULTLEXER_H
  12
  13 namespace Scintilla {
  14
  15 // A simple lexer with no state
  16 class DefaultLexer : public ILexerWithMetaData {
  17         const LexicalClass *lexClasses;
  18         size_t nClasses;
  19 public:
  20         DefaultLexer(const LexicalClass *lexClasses_ = nullptr, size_t nClasses_ = 0);
  21         virtual ~DefaultLexer();
  22         void SCI_METHOD Release() override;
  23         int SCI_METHOD Version() const override;
  24         const char * SCI_METHOD PropertyNames() override;
  25         int SCI_METHOD PropertyType(const char *name) override;
  26         const char * SCI_METHOD DescribeProperty(const char *name) override;
  27         Sci_Position SCI_METHOD PropertySet(const char *key, const char *val) override;
  28         const char * SCI_METHOD DescribeWordListSets() override;
  29         Sci_Position SCI_METHOD WordListSet(int n, const char *wl) override;
  30         void SCI_METHOD Lex(Sci_PositionU startPos, Sci_Position lengthDoc, int initStyle, IDocument *pAccess) override = 0;
  31         void SCI_METHOD Fold(Sci_PositionU startPos, Sci_Position lengthDoc, int initStyle, IDocument *pAccess) override;
  32         void * SCI_METHOD PrivateCall(int operation, void *pointer) override;
  33         int SCI_METHOD LineEndTypesSupported() override;
  34         int SCI_METHOD AllocateSubStyles(int styleBase, int numberStyles) override;
  35         int SCI_METHOD SubStylesStart(int styleBase) override;
  36         int SCI_METHOD SubStylesLength(int styleBase) override;
  37         int SCI_METHOD StyleFromSubStyle(int subStyle) override;
  38         int SCI_METHOD PrimaryStyleFromStyle(int style) override;
  39         void SCI_METHOD FreeSubStyles() override;
  40         void SCI_METHOD SetIdentifiers(int style, const char *identifiers) override;
  41         int SCI_METHOD DistanceToSecondaryStyles() override;
  42         const char * SCI_METHOD GetSubStyleBases() override;
  43         int SCI_METHOD NamedStyles() override;
  44         const char * SCI_METHOD NameOfStyle(int style) override;
  45         const char * SCI_METHOD TagsOfStyle(int style) override;
  46         const char * SCI_METHOD DescriptionOfStyle(int style) override;
  47 };
  48
  49 }
  50
  51 #endif