src/stc/scintilla/src/KeyWords.cxx

   1 // Scintilla source code edit control
   2 /** @file KeyWords.cxx
   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 #include <stdlib.h>
   9 #include <string.h>
  10 #include <ctype.h>
  11 #include <stdio.h>
  12 #include <stdarg.h>
  13
  14 #include "Platform.h"
  15
  16 #include "PropSet.h"
  17 #include "Accessor.h"
  18 #include "KeyWords.h"
  19 #include "Scintilla.h"
  20 #include "SciLexer.h"
  21
  22 LexerModule *LexerModule::base = 0;
  23 int LexerModule::nextLanguage = SCLEX_AUTOMATIC+1;
  24
  25 LexerModule::LexerModule(int language_, LexerFunction fnLexer_,
  26         const char *languageName_, LexerFunction fnFolder_) :
  27         language(language_),
  28         languageName(languageName_),
  29         fnLexer(fnLexer_),
  30         fnFolder(fnFolder_) {
  31         next = base;
  32         base = this;
  33         if (language == SCLEX_AUTOMATIC) {
  34                 language = nextLanguage;
  35                 nextLanguage++;
  36         }
  37 }
  38
  39 LexerModule *LexerModule::Find(int language) {
  40         LexerModule *lm = base;
  41         while (lm) {
  42                 if (lm->language == language) {
  43                         return lm;
  44                 }
  45                 lm = lm->next;
  46         }
  47         return 0;
  48 }
  49
  50 LexerModule *LexerModule::Find(const char *languageName) {
  51         if (languageName) {
  52                 LexerModule *lm = base;
  53                 while (lm) {
  54                         if (lm->languageName && 0 == strcmp(lm->languageName, languageName)) {
  55                                 return lm;
  56                         }
  57                         lm = lm->next;
  58                 }
  59         }
  60         return 0;
  61 }
  62
  63 void LexerModule::Lex(unsigned int startPos, int lengthDoc, int initStyle,
  64           WordList *keywordlists[], Accessor &styler) {
  65         if (fnLexer)
  66                 fnLexer(startPos, lengthDoc, initStyle, keywordlists, styler);
  67 }
  68
  69 void LexerModule::Fold(unsigned int startPos, int lengthDoc, int initStyle,
  70           WordList *keywordlists[], Accessor &styler) {
  71         if (fnFolder) {
  72                 int lineCurrent = styler.GetLine(startPos);
  73                 // Move back one line in case deletion wrecked current line fold state
  74                 if (lineCurrent > 0) {
  75                         lineCurrent--;
  76                         int newStartPos = styler.LineStart(lineCurrent);
  77                         lengthDoc += startPos - newStartPos;
  78                         startPos = newStartPos;
  79                         initStyle = 0;
  80                         if (startPos > 0) {
  81                                 initStyle = styler.StyleAt(startPos - 1);
  82                         }
  83                 }
  84                 fnFolder(startPos, lengthDoc, initStyle, keywordlists, styler);
  85         }
  86 }
  87
  88 static void ColouriseNullDoc(unsigned int startPos, int length, int, WordList *[],
  89                             Accessor &styler) {
  90         // Null language means all style bytes are 0 so just mark the end - no need to fill in.
  91         if (length > 0) {
  92                 styler.StartAt(startPos + length - 1);
  93                 styler.StartSegment(startPos + length - 1);
  94                 styler.ColourTo(startPos + length - 1, 0);
  95         }
  96 }
  97
  98 LexerModule lmNull(SCLEX_NULL, ColouriseNullDoc, "null");
  99
 100 #ifdef __vms
 101
 102 // The following code forces a reference to all of the Scintilla lexers.
 103 // If we don't do something like this, then the linker tends to "optimize"
 104 // them away. (eric@sourcegear.com)
 105
 106 // Taken from wxWindow's stc.cpp. Walter.
 107
 108 int wxForceScintillaLexers(void) {
 109   extern LexerModule lmAda;
 110   extern LexerModule lmAVE;
 111   extern LexerModule lmConf;
 112   extern LexerModule lmDiff;
 113   extern LexerModule lmLatex;
 114   extern LexerModule lmPascal;
 115   extern LexerModule lmCPP;
 116   extern LexerModule lmHTML;
 117   extern LexerModule lmXML;
 118   extern LexerModule lmProps;
 119   extern LexerModule lmErrorList;
 120   extern LexerModule lmMake;
 121   extern LexerModule lmBatch;
 122   extern LexerModule lmPerl;
 123   extern LexerModule lmPython;
 124   extern LexerModule lmSQL;
 125   extern LexerModule lmVB;
 126   extern LexerModule lmRuby;
 127
 128   if (
 129       &lmAda
 130       && &lmAVE
 131       && &lmConf
 132       && &lmDiff
 133       && &lmLatex
 134       && &lmPascal
 135       && &lmCPP
 136       && &lmHTML
 137       && &lmXML
 138       && &lmProps
 139       && &lmErrorList
 140       && &lmMake
 141       && &lmBatch
 142       && &lmPerl
 143       && &lmPython
 144       && &lmSQL
 145       && &lmVB
 146       && &lmRuby
 147       )
 148     {
 149       return 1;
 150     }
 151   else
 152     {
 153       return 0;
 154     }
 155 }
 156 #endif