src/stc/scintilla/include/KeyWords.h

   1 // Scintilla source code edit control
   2 /** @file KeyWords.h
   3  ** Colourise for particular languages.
   4  **/
   5 // Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
   6 // The License.txt file describes the conditions under which this software may be distributed.
   7
   8 typedef void (*LexerFunction)(unsigned int startPos, int lengthDoc, int initStyle,
   9                   WordList *keywordlists[], Accessor &styler);
  10
  11 /**
  12  * A LexerModule is responsible for lexing and folding a particular language.
  13  * The class maintains a list of LexerModules which can be searched to find a
  14  * module appropriate to a particular language.
  15  */
  16 class LexerModule {
  17 protected:
  18         const LexerModule *next;
  19         int language;
  20         LexerFunction fnLexer;
  21         LexerFunction fnFolder;
  22
  23         static const LexerModule *base;
  24         static int nextLanguage;
  25
  26 public:
  27         const char *languageName;
  28         LexerModule(int language_, LexerFunction fnLexer_,
  29                 const char *languageName_=0, LexerFunction fnFolder_=0);
  30         int GetLanguage() const { return language; }
  31         virtual void Lex(unsigned int startPos, int lengthDoc, int initStyle,
  32                   WordList *keywordlists[], Accessor &styler) const;
  33         virtual void Fold(unsigned int startPos, int lengthDoc, int initStyle,
  34                   WordList *keywordlists[], Accessor &styler) const;
  35         static const LexerModule *Find(int language);
  36         static const LexerModule *Find(const char *languageName);
  37 };
  38
  39 /**
  40  * Check if a character is a space.
  41  * This is ASCII specific but is safe with chars >= 0x80.
  42  */
  43 inline bool isspacechar(unsigned char ch) {
  44     return (ch == ' ') || ((ch >= 0x09) && (ch <= 0x0d));
  45 }
  46
  47 inline bool iswordchar(char ch) {
  48         return isascii(ch) && (isalnum(ch) || ch == '.' || ch == '_');
  49 }
  50
  51 inline bool iswordstart(char ch) {
  52         return isascii(ch) && (isalnum(ch) || ch == '_');
  53 }
  54
  55 inline bool isoperator(char ch) {
  56         if (isascii(ch) && isalnum(ch))
  57                 return false;
  58         // '.' left out as it is used to make up numbers
  59         if (ch == '%' || ch == '^' || ch == '&' || ch == '*' ||
  60                 ch == '(' || ch == ')' || ch == '-' || ch == '+' ||
  61                 ch == '=' || ch == '|' || ch == '{' || ch == '}' ||
  62                 ch == '[' || ch == ']' || ch == ':' || ch == ';' ||
  63                 ch == '<' || ch == '>' || ch == ',' || ch == '/' ||
  64                 ch == '?' || ch == '!' || ch == '.' || ch == '~')
  65                 return true;
  66         return false;
  67 }