C++ Accessor::StyleAt方法代码示例

static void FoldSolDoc(unsigned int startPos, int length, int initStyle,
						   WordList *[], Accessor &styler)
 {
	int lengthDoc = startPos + length;

	int lineCurrent = styler.GetLine(startPos);
	if (startPos > 0)
        {
          if (lineCurrent > 0)
          {
               lineCurrent--;
               startPos = styler.LineStart(lineCurrent);
               if (startPos == 0)
                    initStyle = SCE_SCRIPTOL_DEFAULT;
               else
                    initStyle = styler.StyleAt(startPos-1);
           }
	}
	int state = initStyle & 31;
	int spaceFlags = 0;
        int indentCurrent = styler.IndentAmount(lineCurrent, &spaceFlags, IsSolComment);
        if ((state == SCE_SCRIPTOL_TRIPLE))
             indentCurrent |= SC_FOLDLEVELWHITEFLAG;
	char chNext = styler[startPos];
	for (int i = startPos; i < lengthDoc; i++)
         {
		char ch = chNext;
		chNext = styler.SafeGetCharAt(i + 1);
		int style = styler.StyleAt(i) & 31;

		if ((ch == '\r' && chNext != '\n') || (ch == '\n') || (i == lengthDoc))
                {
                   int lev = indentCurrent;
                   int indentNext = styler.IndentAmount(lineCurrent + 1, &spaceFlags, IsSolComment);
                   if (style == SCE_SCRIPTOL_TRIPLE)
                        indentNext |= SC_FOLDLEVELWHITEFLAG;
                   if (!(indentCurrent & SC_FOLDLEVELWHITEFLAG))
                    {
                        // Only non whitespace lines can be headers
                        if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext & SC_FOLDLEVELNUMBERMASK))
                        {
                              lev |= SC_FOLDLEVELHEADERFLAG;
                        }
                        else if (indentNext & SC_FOLDLEVELWHITEFLAG)
                        {
                             // Line after is blank so check the next - maybe should continue further?
                             int spaceFlags2 = 0;
                             int indentNext2 = styler.IndentAmount(lineCurrent + 2, &spaceFlags2, IsSolComment);
                             if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext2 & SC_FOLDLEVELNUMBERMASK))
                             {
                                   lev |= SC_FOLDLEVELHEADERFLAG;
                              }
                        }
                    }
                   indentCurrent = indentNext;
                   styler.SetLevel(lineCurrent, lev);
                   lineCurrent++;
		}
	}
}

// Store both the current line's fold level and the next lines in the
// level store to make it easy to pick up with each increment
// and to make it possible to fiddle the current level for "} else {".
static void FoldNoBox4glDoc(unsigned int startPos, int length, int initStyle,
                            Accessor &styler) {
	bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
	bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
	bool foldAtElse = styler.GetPropertyInt("fold.at.else", 0) != 0;
	unsigned int endPos = startPos + length;
	int visibleChars = 0;
	int lineCurrent = styler.GetLine(startPos);
	int levelCurrent = SC_FOLDLEVELBASE;
	if (lineCurrent > 0)
		levelCurrent = styler.LevelAt(lineCurrent-1) >> 16;
	int levelMinCurrent = levelCurrent;
	int levelNext = levelCurrent;
	char chNext = static_cast<char>(tolower(styler[startPos]));
	int styleNext = styler.StyleAt(startPos);
	int style = initStyle;
	for (unsigned int i = startPos; i < endPos; i++) {
		char ch = chNext;
		chNext = static_cast<char>(tolower(styler.SafeGetCharAt(i + 1)));
		int stylePrev = style;
		style = styleNext;
		styleNext = styler.StyleAt(i + 1);
		bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
		if (foldComment && IsStreamCommentStyle(style)) {
			if (!IsStreamCommentStyle(stylePrev)) {
				levelNext++;
			} else if (!IsStreamCommentStyle(styleNext)) { // && !atEOL) {
				// Comments don't end at end of line and the next character may be unstyled.
				levelNext--;
			}
		}
		else if ((style & 0xf) == SCE_4GL_BLOCK && !isalnum(chNext)) {
			levelNext++;
		}
		else if ((style & 0xf) == SCE_4GL_END  && (ch == 'e' || ch == 'f')) {
			levelNext--;
		}
		if (atEOL) {
			int levelUse = levelCurrent;
			if (foldAtElse) {
				levelUse = levelMinCurrent;
			}
			int lev = levelUse | levelNext << 16;
			if (visibleChars == 0 && foldCompact)
				lev |= SC_FOLDLEVELWHITEFLAG;
			if (levelUse < levelNext)
				lev |= SC_FOLDLEVELHEADERFLAG;
			if (lev != styler.LevelAt(lineCurrent)) {
				styler.SetLevel(lineCurrent, lev);
			}
			lineCurrent++;
			levelCurrent = levelNext;
			levelMinCurrent = levelCurrent;
			visibleChars = 0;
		}
		if (!isspacechar(ch))
			visibleChars++;
	}
}

// Main folding function called by Scintilla - (based on props (.ini) files function)
static void FoldGui4Cli(unsigned int startPos, int length, int,
								WordList *[], Accessor &styler)
{
	bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;

	unsigned int endPos = startPos + length;
	int visibleChars = 0;
	int lineCurrent = styler.GetLine(startPos);

	char chNext = styler[startPos];
	int styleNext = styler.StyleAt(startPos);
	bool headerPoint = false;

	for (unsigned int i = startPos; i < endPos; i++)
	{
		char ch = chNext;
		chNext = styler[i+1];

		int style = styleNext;
		styleNext = styler.StyleAt(i + 1);
		bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');

		if (style == SCE_GC_EVENT || style == SCE_GC_GLOBAL)
		{	headerPoint = true; // fold at events and globals
		}

		if (atEOL)
		{	int lev = SC_FOLDLEVELBASE+1;

			if (headerPoint)
				lev = SC_FOLDLEVELBASE;

			if (visibleChars == 0 && foldCompact)
				lev |= SC_FOLDLEVELWHITEFLAG;

			if (headerPoint)
				lev |= SC_FOLDLEVELHEADERFLAG;

			if (lev != styler.LevelAt(lineCurrent)) // set level, if not already correct
			{	styler.SetLevel(lineCurrent, lev);
			}

			lineCurrent++;		// re-initialize our flags
			visibleChars = 0;
			headerPoint = false;
		}

		if (!(isspacechar(ch))) // || (style == SCE_GC_COMMENTLINE) || (style != SCE_GC_COMMENTBLOCK)))
			visibleChars++;
	}

	int lev = headerPoint ? SC_FOLDLEVELBASE : SC_FOLDLEVELBASE+1;
	int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
	styler.SetLevel(lineCurrent, lev | flagsNext);
}

static void FoldPSDoc(unsigned int startPos, int length, int, WordList *[],
                       Accessor &styler) {
    bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
    bool foldAtElse = styler.GetPropertyInt("fold.at.else", 0) != 0;
    unsigned int endPos = startPos + length;
    int visibleChars = 0;
    int lineCurrent = styler.GetLine(startPos);
    int levelCurrent = SC_FOLDLEVELBASE;
    if (lineCurrent > 0)
        levelCurrent = styler.LevelAt(lineCurrent-1) >> 16;
    int levelMinCurrent = levelCurrent;
    int levelNext = levelCurrent;
    char chNext = styler[startPos];
    int styleNext = styler.StyleAt(startPos);
    int style;
    for (unsigned int i = startPos; i < endPos; i++) {
        char ch = chNext;
        chNext = styler.SafeGetCharAt(i + 1);
        style = styleNext;
        styleNext = styler.StyleAt(i + 1);
        bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');  //mac??
        if ((style & 31) == SCE_PS_PAREN_PROC) {
            if (ch == '{') {
                // Measure the minimum before a '{' to allow
                // folding on "} {"
                if (levelMinCurrent > levelNext) {
                    levelMinCurrent = levelNext;
                }
                levelNext++;
            } else if (ch == '}') {
                levelNext--;
            }
        }
        if (atEOL) {
            int levelUse = levelCurrent;
            if (foldAtElse) {
                levelUse = levelMinCurrent;
            }
            int lev = levelUse | levelNext << 16;
            if (visibleChars == 0 && foldCompact)
                lev |= SC_FOLDLEVELWHITEFLAG;
            if (levelUse < levelNext)
                lev |= SC_FOLDLEVELHEADERFLAG;
            if (lev != styler.LevelAt(lineCurrent)) {
                styler.SetLevel(lineCurrent, lev);
            }
            lineCurrent++;
            levelCurrent = levelNext;
            levelMinCurrent = levelCurrent;
            visibleChars = 0;
        }
        if (!isspacechar(ch))
            visibleChars++;
    }
}

void Fold_Doc(unsigned int startPos, int length, int initStyle, WordList *[], Accessor &styler)
{

    bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
    bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
    unsigned int endPos = startPos + length;
    int visibleChars = 0;
    int lineCurrent = styler.GetLine(startPos);
    int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
    int levelCurrent = levelPrev;
    char chNext = styler[startPos];
    int styleNext = styler.StyleAt(startPos);
    for (unsigned int i = startPos; i < endPos; i++) {
        char ch = chNext;
        chNext = styler.SafeGetCharAt(i + 1);
        int style = styleNext;
        styleNext = styler.StyleAt(i + 1);
        bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
        // Comment folding
        if (foldComment && atEOL && IsCommentLine(lineCurrent, styler))
        {
            if (!IsCommentLine(lineCurrent - 1, styler)
                    && IsCommentLine(lineCurrent + 1, styler))
                levelCurrent++;
            else if (IsCommentLine(lineCurrent - 1, styler)
                     && !IsCommentLine(lineCurrent+1, styler))
                levelCurrent--;
        }
        if (style == sID::OPERATOR) {
            if ( ch == '<' && chNext != '/' ) {
                levelCurrent++;
            } else if (ch == '<' && chNext == '/') {
                levelCurrent--;
            }
        }
        if (atEOL) {
            int lev = levelPrev;
            if (visibleChars == 0 && foldCompact)
                lev |= SC_FOLDLEVELWHITEFLAG;
            if ((levelCurrent > levelPrev) && (visibleChars > 0))
                lev |= SC_FOLDLEVELHEADERFLAG;
            if (lev != styler.LevelAt(lineCurrent)) {
                styler.SetLevel(lineCurrent, lev);
            }
            lineCurrent++;
            levelPrev = levelCurrent;
            visibleChars = 0;
        }
        if (!isspacechar(ch))
            visibleChars++;
    }
    // Fill in the real level of the next line, keeping the current flags as they will be filled in later
    int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
    styler.SetLevel(lineCurrent, levelPrev | flagsNext);
}

static void FoldGAPDoc( unsigned int startPos, int length, int initStyle,   WordList** , Accessor &styler) {
	unsigned int endPos = startPos + length;
	int visibleChars = 0;
	int lineCurrent = styler.GetLine(startPos);
	int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
	int levelCurrent = levelPrev;
	char chNext = styler[startPos];
	int styleNext = styler.StyleAt(startPos);
	int style = initStyle;

	int lastStart = 0;

	for (unsigned int i = startPos; i < endPos; i++) {
		char ch = chNext;
		chNext = styler.SafeGetCharAt(i + 1);
		int stylePrev = style;
		style = styleNext;
		styleNext = styler.StyleAt(i + 1);
		bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');

		if (stylePrev != SCE_GAP_KEYWORD && style == SCE_GAP_KEYWORD) {
			// Store last word start point.
			lastStart = i;
		}

		if (stylePrev == SCE_GAP_KEYWORD) {
			if(iswordchar(ch) && !iswordchar(chNext)) {
				char s[100];
				GetRange(lastStart, i, styler, s, sizeof(s));
				levelCurrent += ClassifyFoldPointGAP(s);
			}
		}

		if (atEOL) {
			int lev = levelPrev;
			if ((levelCurrent > levelPrev) && (visibleChars > 0))
				lev |= SC_FOLDLEVELHEADERFLAG;
			if (lev != styler.LevelAt(lineCurrent)) {
				styler.SetLevel(lineCurrent, lev);
			}
			lineCurrent++;
			levelPrev = levelCurrent;
			visibleChars = 0;
		}

		if (!isspacechar(ch))
			visibleChars++;
	}

	int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
	styler.SetLevel(lineCurrent, levelPrev | flagsNext);
}

static int calculateFoldNsis(unsigned int start, unsigned int end, int foldlevel, Accessor &styler, bool bElse, bool foldUtilityCmd )
{
  int style = styler.StyleAt(end);

  // If the word is too long, it is not what we are looking for
  if( end - start > 20 )
    return foldlevel;

  if( foldUtilityCmd )
  {
    // Check the style at this point, if it is not valid, then return zero
    if( style != SCE_NSIS_FUNCTIONDEF && style != SCE_NSIS_SECTIONDEF &&
        style != SCE_NSIS_SUBSECTIONDEF && style != SCE_NSIS_IFDEFINEDEF &&
        style != SCE_NSIS_MACRODEF && style != SCE_NSIS_SECTIONGROUP &&
        style != SCE_NSIS_PAGEEX )
          return foldlevel;
  }
  else
  {
    if( style != SCE_NSIS_FUNCTIONDEF && style != SCE_NSIS_SECTIONDEF &&
        style != SCE_NSIS_SUBSECTIONDEF && style != SCE_NSIS_SECTIONGROUP &&
        style != SCE_NSIS_PAGEEX )
          return foldlevel;
  }

  int newFoldlevel = foldlevel;
  bool bIgnoreCase = false;
  if( styler.GetPropertyInt("nsis.ignorecase") == 1 )
    bIgnoreCase = true;

  char s[20]; // The key word we are looking for has atmost 13 characters
  s[0] = '\0';
  for (unsigned int i = 0; i < end - start + 1 && i < 19; i++)
	{
		s[i] = static_cast<char>( styler[ start + i ] );
		s[i + 1] = '\0';
	}

  if( s[0] == '!' )
  {
    if( NsisCmp(s, "!ifndef", bIgnoreCase) == 0 || NsisCmp(s, "!ifdef", bIgnoreCase ) == 0 || NsisCmp(s, "!ifmacrodef", bIgnoreCase ) == 0 || NsisCmp(s, "!ifmacrondef", bIgnoreCase ) == 0 || NsisCmp(s, "!if", bIgnoreCase ) == 0 || NsisCmp(s, "!macro", bIgnoreCase ) == 0 )
      newFoldlevel++;
    else if( NsisCmp(s, "!endif", bIgnoreCase) == 0 || NsisCmp(s, "!macroend", bIgnoreCase ) == 0 )
      newFoldlevel--;
    else if( bElse && NsisCmp(s, "!else", bIgnoreCase) == 0 )
      newFoldlevel++;
  }
  else
  {
    if( NsisCmp(s, "Section", bIgnoreCase ) == 0 || NsisCmp(s, "SectionGroup", bIgnoreCase ) == 0 || NsisCmp(s, "Function", bIgnoreCase) == 0 || NsisCmp(s, "SubSection", bIgnoreCase ) == 0 || NsisCmp(s, "PageEx", bIgnoreCase ) == 0 )
      newFoldlevel++;
    else if( NsisCmp(s, "SectionGroupEnd", bIgnoreCase ) == 0 || NsisCmp(s, "SubSectionEnd", bIgnoreCase ) == 0 || NsisCmp(s, "FunctionEnd", bIgnoreCase) == 0 || NsisCmp(s, "SectionEnd", bIgnoreCase ) == 0 || NsisCmp(s, "PageExEnd", bIgnoreCase ) == 0 )
      newFoldlevel--;
  }

  return newFoldlevel;
}

static void FoldRebolDoc(unsigned int startPos, int length, int /* initStyle */, WordList *[],
                            Accessor &styler) {
	unsigned int lengthDoc = startPos + length;
	int visibleChars = 0;
	int lineCurrent = styler.GetLine(startPos);
	int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
	int levelCurrent = levelPrev;
	char chNext = styler[startPos];
	int styleNext = styler.StyleAt(startPos);
	for (unsigned int i = startPos; i < lengthDoc; i++) {
		char ch = chNext;
		chNext = styler.SafeGetCharAt(i + 1);
		int style = styleNext;
		styleNext = styler.StyleAt(i + 1);
		bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
		if (style == SCE_REBOL_DEFAULT) {
			if (ch == '[') {
				levelCurrent++;
			} else if (ch == ']') {
				levelCurrent--;
			}
		}
		if (atEOL) {
			int lev = levelPrev;
			if (visibleChars == 0)
				lev |= SC_FOLDLEVELWHITEFLAG;
			if ((levelCurrent > levelPrev) && (visibleChars > 0))
				lev |= SC_FOLDLEVELHEADERFLAG;
			if (lev != styler.LevelAt(lineCurrent)) {
				styler.SetLevel(lineCurrent, lev);
			}
			lineCurrent++;
			levelPrev = levelCurrent;
			visibleChars = 0;
		}
		if (!isspacechar(ch))
			visibleChars++;
	}
	// Fill in the real level of the next line, keeping the current flags as they will be filled in later
	int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
	styler.SetLevel(lineCurrent, levelPrev | flagsNext);
}

static unsigned int SkipWhiteSpace(unsigned int currentPos, unsigned int endPos, 
		Accessor &styler, bool includeChars = false) {
	CharacterSet setWord(CharacterSet::setAlphaNum, "_");
	unsigned int j = currentPos + 1;
	char ch = styler.SafeGetCharAt(j);
	while ((j < endPos) && (IsASpaceOrTab(ch) || ch == '\r' || ch == '\n' || 
		IsStreamCommentStyle(styler.StyleAt(j)) || (includeChars && setWord.Contains(ch)))) {
		j++;
		ch = styler.SafeGetCharAt(j);
	}
	return j;
}

//
// Routine to find first none space on the current line and return its Style
// needed for comment lines not starting on pos 1
static int GetStyleFirstWord(Sci_PositionU szLine, Accessor &styler)
{
	Sci_Position nsPos = styler.LineStart(szLine);
	Sci_Position nePos = styler.LineStart(szLine+1) - 1;
	while (isspacechar(styler.SafeGetCharAt(nsPos)) && nsPos < nePos)
	{
		nsPos++; // skip to next char

	} // End While
	return styler.StyleAt(nsPos);

} // GetStyleFirstWord()

// Routine to find first none space on the current line and return its Style
// needed for comment lines not starting on pos 1
static int GetStyleFirstWord(int szLine, Accessor &styler)
{
	int startPos = styler.LineStart(szLine);
	int endPos = styler.LineStart(szLine + 1) - 1;
	char ch = styler.SafeGetCharAt(startPos);

	while (ch > 0 && isspacechar(ch) && startPos < endPos)
	{
		startPos++; // skip to next char
		ch = styler.SafeGetCharAt(startPos);
	}
	return styler.StyleAt(startPos);
}

static bool IsCommentBlockStart(int line, Accessor &styler)
{
    int pos = styler.LineStart(line);
	int eol_pos = styler.LineStart(line + 1) - 1;
	for (int i = pos; i < eol_pos; i++) {
		char ch = styler[i];
		char chNext = styler[i+1];
        char style = styler.StyleAt(i);
		if ((style == SCE_VHDL_BLOCK_COMMENT) && (ch == '/') && (chNext == '*'))
			return true;
	}
	return false;
}

static bool IsCommentLine(int line, Accessor &styler) {
	int pos = styler.LineStart(line);
	int eolPos = styler.LineStart(line + 1) - 1;
	for (int i = pos; i < eolPos; i++) {
		char ch = styler[i];
		char chNext = styler.SafeGetCharAt(i + 1);
		int style = styler.StyleAt(i);
		if (ch == '/' && chNext == '/' && style == SCE_PAS_COMMENTLINE) {
			return true;
		} else if (!IsASpaceOrTab(ch)) {
			return false;
		}
	}
	return false;
}

static bool IsContinuationLine(unsigned int szLine, Accessor &styler)
{
	int startPos = styler.LineStart(szLine);
	int endPos = styler.LineStart(szLine + 1) - 2;
	while (startPos < endPos)
	{
		char stylech = styler.StyleAt(startPos);
		if (!(stylech == SCE_POWERPRO_COMMENTBLOCK)) {
			char ch = styler.SafeGetCharAt(endPos);
			char chPrev = styler.SafeGetCharAt(endPos - 1);
			char chPrevPrev = styler.SafeGetCharAt(endPos - 2);
			if (ch > 0 && chPrev > 0 && chPrevPrev > 0 && !isspacechar(ch) && !isspacechar(chPrev) && !isspacechar(chPrevPrev) )
				return (chPrevPrev == ';' && chPrev == ';' && ch == '+');
			}
		endPos--; // skip to next char
	}
	return false;
}

void LexerModule::Fold(unsigned int startPos, int lengthDoc, int initStyle,
	  WordList *keywordlists[], Accessor &styler) const {
	if (fnFolder) {
		int lineCurrent = styler.GetLine(startPos);
		// Move back one line in case deletion wrecked current line fold state
		if (lineCurrent > 0) {
			lineCurrent--;
			int newStartPos = styler.LineStart(lineCurrent);
			lengthDoc += startPos - newStartPos;
			startPos = newStartPos;
			initStyle = 0;
			if (startPos > 0) {
				initStyle = styler.StyleAt(startPos - 1);
			}
		}
		fnFolder(startPos, lengthDoc, initStyle, keywordlists, styler);
	}
}