lexclw.cxx

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			}
		}
		// String State Handling
		else if (scDoc.state == SCE_CLW_STRING) {
			// If the character is an ' (single quote)
			if (scDoc.ch == '\'') {
				// Set the state to default and move forward colouring
				// the ' (single quote) as default state
				// terminating the string state
				scDoc.SetState(SCE_CLW_DEFAULT);
				scDoc.Forward();
			}
			// If the next character is an ' (single quote)
			if (scDoc.chNext == '\'') {
				// Move forward one character and set to default state
				// colouring the next ' (single quote) as default state
				// terminating the string state
				scDoc.ForwardSetState(SCE_CLW_DEFAULT);
				scDoc.Forward();
			}
		}
		// Picture String State Handling
		else if (scDoc.state == SCE_CLW_PICTURE_STRING) {
			// If the character is an ( (open parenthese)
			if (scDoc.ch == '(') {
				// Increment the parenthese level
				iParenthesesLevel++;
			}
			// Else if the character is a ) (close parenthese) 
			else if (scDoc.ch == ')') {
				// If the parenthese level is set to zero
				// parentheses matched
				if (!iParenthesesLevel) {
					scDoc.SetState(SCE_CLW_DEFAULT);
				} 
				// Else parenthese level is greater than zero
				// still looking for matching parentheses
				else {
					// Decrement the parenthese level
					iParenthesesLevel--;
				}
			}
		}
		// Standard Equate State Handling
		else if (scDoc.state == SCE_CLW_STANDARD_EQUATE) {
			if (!isalnum(scDoc.ch)) {
				scDoc.SetState(SCE_CLW_DEFAULT);
			}
		}
		// Integer Constant State Handling
		else if (scDoc.state == SCE_CLW_INTEGER_CONSTANT) {
			// If the character is not a digit (0-9)
			// or character is not a hexidecimal character (A-F)
			// or character is not a . (point)
			// or character is not a numberic base character (B,O,H)
			if (!(isdigit(scDoc.ch)
			|| IsAHexCharacter(scDoc.ch, bCaseSensitive)
			|| scDoc.ch == '.'
			|| IsANumericBaseCharacter(scDoc.ch, bCaseSensitive))) {
				// If the number was a real 
				if (SetNumericConstantState(scDoc)) {
					// Colour the matched string to the real constant state
					scDoc.ChangeState(SCE_CLW_REAL_CONSTANT);
				}
				// Else the number was an integer
				else {
					// Colour the matched string to an integer constant state
					scDoc.ChangeState(SCE_CLW_INTEGER_CONSTANT);
				}
				// Terminate the integer constant state and set to default state
				scDoc.SetState(SCE_CLW_DEFAULT);
			}
		}

		//
		// Determine if a new state should be entered.
		//

		// Beginning of Line Handling
		if (scDoc.atLineStart) {
			// Reset the column 1 label flag
			iColumn1Label = false;
			// If column 1 character is a label start character
			if (IsALabelStart(scDoc.ch)) {
				// Label character is found in column 1
				// so set column 1 label flag and clear last column 1 label
				iColumn1Label = true;
				// Set the state to label
				scDoc.SetState(SCE_CLW_LABEL);
			}
			// else if character is a space or tab
			else if (IsASpace(scDoc.ch)){
				// Set to default state
				scDoc.SetState(SCE_CLW_DEFAULT);
			}
			// else if comment start (!) or is an * (asterisk)
			else if (IsACommentStart(scDoc.ch) || scDoc.ch == '*' ) {
				// then set the state to comment.
				scDoc.SetState(SCE_CLW_COMMENT);
			}
			// else the character is a ? (question mark)
			else if (scDoc.ch == '?') {
				// Change to the compiler directive state, move forward,
				// colouring the ? (question mark), change back to default state.
				scDoc.ChangeState(SCE_CLW_COMPILER_DIRECTIVE);
				scDoc.Forward();
				scDoc.SetState(SCE_CLW_DEFAULT);
			}
			// else an invalid character in column 1
			else {
				// Set to error state
				scDoc.SetState(SCE_CLW_ERROR);
			}
		}
		// End of Line Handling
		else if (scDoc.atLineEnd) {
			// Reset to the default state at the end of each line.
			scDoc.SetState(SCE_CLW_DEFAULT);
		}
		// Default Handling
		else {
			// If in default state 
			if (scDoc.state == SCE_CLW_DEFAULT) {
				// If is a letter could be a possible statement
				if (isalpha(scDoc.ch)) {
					// Set the state to Clarion Keyword and verify later
					scDoc.SetState(SCE_CLW_KEYWORD);
				}
				// else is a number
				else if (isdigit(scDoc.ch)) {
					// Set the state to Integer Constant and verify later
					scDoc.SetState(SCE_CLW_INTEGER_CONSTANT);
				}
				// else if the start of a comment or a | (line continuation)
				else if (IsACommentStart(scDoc.ch) || scDoc.ch == '|') {
					// then set the state to comment.
					scDoc.SetState(SCE_CLW_COMMENT);
				}		
				// else if the character is a ' (single quote)
				else if (scDoc.ch == '\'') {
					// If the character is also a ' (single quote) 
					// Embedded Apostrophe
					if (scDoc.chNext == '\'') {
						// Move forward colouring it as default state
						scDoc.ForwardSetState(SCE_CLW_DEFAULT);
					}
					else {
						// move to the next character and then set the state to comment.
						scDoc.ForwardSetState(SCE_CLW_STRING);
					}
				}		
				// else the character is an @ (ampersand)
				else if (scDoc.ch == '@') {
					// Case insensitive.
					if (!bCaseSensitive) {
						// If character is a valid picture token character
						if (strchr("DEKNPSTdeknpst", scDoc.chNext) != NULL) {
							// Set to the picture string state
							scDoc.SetState(SCE_CLW_PICTURE_STRING);
						}
					}
					// Case sensitive
					else {
						// If character is a valid picture token character
						if (strchr("DEKNPST", scDoc.chNext) != NULL) {
							// Set the picture string state
							scDoc.SetState(SCE_CLW_PICTURE_STRING);
						}
					}
				}		
			}
		}
	}
	// lexing complete
	scDoc.Complete();
}

// Clarion Language Case Sensitive Colouring Procedure
static void ColouriseClarionDocSensitive(unsigned int uiStartPos, int iLength, int iInitStyle, WordList *wlKeywords[], Accessor &accStyler) {

	ColouriseClarionDoc(uiStartPos, iLength, iInitStyle, wlKeywords, accStyler, true);
}

// Clarion Language Case Insensitive Colouring Procedure
static void ColouriseClarionDocInsensitive(unsigned int uiStartPos, int iLength, int iInitStyle, WordList *wlKeywords[], Accessor &accStyler) {

	ColouriseClarionDoc(uiStartPos, iLength, iInitStyle, wlKeywords, accStyler, false);
}

// Fill Buffer

static void FillBuffer(unsigned int uiStart, unsigned int uiEnd, Accessor &accStyler, char *szBuffer, unsigned int uiLength) {

	unsigned int uiPos = 0;

	while ((uiPos < uiEnd - uiStart + 1) && (uiPos < uiLength-1)) {
		szBuffer[uiPos] = static_cast<char>(toupper(accStyler[uiStart + uiPos]));
		uiPos++;
	}
	szBuffer[uiPos] = '\0';
}

// Classify Clarion Fold Point

static int ClassifyClarionFoldPoint(int iLevel, const char* szString) {

	if (!(isdigit(szString[0]) || (szString[0] == '.'))) {
		if (strcmp(szString, "PROCEDURE") == 0) {
	//		iLevel = SC_FOLDLEVELBASE + 1;
		}
		else if (strcmp(szString, "MAP") == 0 ||
			strcmp(szString,"ACCEPT") == 0 ||
			strcmp(szString,"BEGIN") == 0 ||
			strcmp(szString,"CASE") == 0 ||
			strcmp(szString,"EXECUTE") == 0 ||
			strcmp(szString,"IF") == 0 ||
			strcmp(szString,"ITEMIZE") == 0 ||
			strcmp(szString,"INTERFACE") == 0 ||
			strcmp(szString,"JOIN") == 0 ||
			strcmp(szString,"LOOP") == 0 ||
			strcmp(szString,"MODULE") == 0 ||
			strcmp(szString,"RECORD") == 0) {
			iLevel++;
		}
		else if (strcmp(szString, "APPLICATION") == 0 ||
			strcmp(szString, "CLASS") == 0 ||
			strcmp(szString, "DETAIL") == 0 ||
			strcmp(szString, "FILE") == 0 ||
			strcmp(szString, "FOOTER") == 0 ||
			strcmp(szString, "FORM") == 0 ||
			strcmp(szString, "GROUP") == 0 ||
			strcmp(szString, "HEADER") == 0 ||
			strcmp(szString, "INTERFACE") == 0 ||
			strcmp(szString, "MENU") == 0 ||
			strcmp(szString, "MENUBAR") == 0 ||
			strcmp(szString, "OLE") == 0 ||
			strcmp(szString, "OPTION") == 0 ||
			strcmp(szString, "QUEUE") == 0 ||
			strcmp(szString, "REPORT") == 0 ||
			strcmp(szString, "SHEET") == 0 ||
			strcmp(szString, "TAB") == 0 ||
			strcmp(szString, "TOOLBAR") == 0 ||
			strcmp(szString, "VIEW") == 0 ||
			strcmp(szString, "WINDOW") == 0) {
			iLevel++;
		}
		else if (strcmp(szString, "END") == 0 ||
			strcmp(szString, "UNTIL") == 0 ||
			strcmp(szString, "WHILE") == 0) {
			iLevel--;
		}
	}
	return(iLevel);
}

// Clarion Language Folding Procedure
static void FoldClarionDoc(unsigned int uiStartPos, int iLength, int iInitStyle, WordList *[], Accessor &accStyler) {

	unsigned int uiEndPos = uiStartPos + iLength;
	int iLineCurrent = accStyler.GetLine(uiStartPos);
	int iLevelPrev = accStyler.LevelAt(iLineCurrent) & SC_FOLDLEVELNUMBERMASK;
	int iLevelCurrent = iLevelPrev;
	char chNext = accStyler[uiStartPos];
	int iStyle = iInitStyle;
	int iStyleNext = accStyler.StyleAt(uiStartPos);
	int iVisibleChars = 0;
	int iLastStart = 0;

	for (unsigned int uiPos = uiStartPos; uiPos < uiEndPos; uiPos++) {

		char chChar = chNext;
		chNext = accStyler.SafeGetCharAt(uiPos + 1);
		int iStylePrev = iStyle;
		iStyle = iStyleNext;
		iStyleNext = accStyler.StyleAt(uiPos + 1);
		bool bEOL = (chChar == '\r' && chNext != '\n') || (chChar == '\n');
	
		if (iStylePrev == SCE_CLW_DEFAULT) {
			if (iStyle == SCE_CLW_KEYWORD || iStyle == SCE_CLW_STRUCTURE_DATA_TYPE) {
				// Store last word start point.
				iLastStart = uiPos;
			}
		}

		if (iStylePrev == SCE_CLW_KEYWORD || iStylePrev == SCE_CLW_STRUCTURE_DATA_TYPE) {
			if(iswordchar(chChar) && !iswordchar(chNext)) {
				char chBuffer[100];
				FillBuffer(iLastStart, uiPos, accStyler, chBuffer, sizeof(chBuffer));
				iLevelCurrent = ClassifyClarionFoldPoint(iLevelCurrent,chBuffer);
			//	if ((iLevelCurrent == SC_FOLDLEVELBASE + 1) && iLineCurrent > 1) {
			//		accStyler.SetLevel(iLineCurrent-1,SC_FOLDLEVELBASE);
			//		iLevelPrev = SC_FOLDLEVELBASE;
			//	}
			}
		}

		if (bEOL) {
			int iLevel = iLevelPrev;
			if ((iLevelCurrent > iLevelPrev) && (iVisibleChars > 0))
				iLevel |= SC_FOLDLEVELHEADERFLAG;
			if (iLevel != accStyler.LevelAt(iLineCurrent)) {
				accStyler.SetLevel(iLineCurrent,iLevel);
			}
			iLineCurrent++;
			iLevelPrev = iLevelCurrent;
			iVisibleChars = 0;
		}
		
		if (!isspacechar(chChar))
			iVisibleChars++;
	}

	// Fill in the real level of the next line, keeping the current flags
	// as they will be filled in later.
	int iFlagsNext = accStyler.LevelAt(iLineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
	accStyler.SetLevel(iLineCurrent, iLevelPrev | iFlagsNext);
}

// Word List Descriptions
static const char * const rgWordListDescriptions[] = {
	"Clarion Keywords",
	"Compiler Directives",
	"Built-in Procedures and Functions",
	"Runtime Expressions",
	"Structure and Data Types",
	"Attributes",
	"Standard Equates",
	"Reserved Words (Labels)",
	"Reserved Words (Procedure Labels)",
	0,
};

// Case Sensitive Clarion Language Lexer
LexerModule lmClw(SCLEX_CLW, ColouriseClarionDocSensitive, "clarion", FoldClarionDoc, rgWordListDescriptions);

// Case Insensitive Clarion Language Lexer
LexerModule lmClwNoCase(SCLEX_CLWNOCASE, ColouriseClarionDocInsensitive, "clarionnocase", FoldClarionDoc, rgWordListDescriptions);