[wxWidgets.git] / src / stc / scintilla / src / LexFortran.cxx

// Scintilla source code edit control
/** @file LexFortran.cxx
 ** Lexer for Fortran.
 ** Writen by Chuan-jian Shen, Last changed Sep. 2003
 **/
// Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.
/***************************************/
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdio.h>
#include <stdarg.h>
/***************************************/
#include "Platform.h"
#include "PropSet.h"
#include "Accessor.h"
#include "StyleContext.h"
#include "KeyWords.h"
#include "Scintilla.h"
#include "SciLexer.h"
/***********************************************/
static inline bool IsAWordChar(const int ch) {
	return (ch < 0x80) && (isalnum(ch) || ch == '_' || ch == '%');
}
/**********************************************/
static inline bool IsAWordStart(const int ch) {
	return (ch < 0x80) && (isalnum(ch));
}
/***************************************/
inline bool IsABlank(unsigned int ch) {
    return (ch == ' ') || (ch == 0x09) || (ch == 0x0b) ;
}
/***************************************/
inline bool IsALineEnd(char ch) {
    return ((ch == '\n') || (ch == '\r')) ;
}
/***************************************/
unsigned int GetContinuedPos(unsigned int pos, Accessor &styler) {
	while (!IsALineEnd(styler.SafeGetCharAt(pos++))) continue;
	if (styler.SafeGetCharAt(pos) == '\n') pos++;
	while (IsABlank(styler.SafeGetCharAt(pos++))) continue;
	char chCur = styler.SafeGetCharAt(pos);
	if (chCur == '&') {
		while (IsABlank(styler.SafeGetCharAt(++pos))) continue;
		return pos;
	} else {
		return pos;
	}
}
/***************************************/
static void ColouriseFortranDoc(unsigned int startPos, int length, int initStyle,
			WordList *keywordlists[], Accessor &styler, bool isFixFormat) {
	WordList &keywords = *keywordlists[0];
	WordList &keywords2 = *keywordlists[1];
	WordList &keywords3 = *keywordlists[2];
	/***************************************/
	int posLineStart = 0, numNonBlank = 0, prevState = 0;
	int endPos = startPos + length;
	/***************************************/
	// backtrack to the nearest keyword
	while ((startPos > 1) && (styler.StyleAt(startPos) != SCE_F_WORD)) {
		startPos--;
	}
	startPos = styler.LineStart(styler.GetLine(startPos));
	initStyle = styler.StyleAt(startPos - 1);
	StyleContext sc(startPos, endPos-startPos, initStyle, styler);
	/***************************************/
	for (; sc.More(); sc.Forward()) {
		// remember the start position of the line
		if (sc.atLineStart) {
			posLineStart = sc.currentPos;
			numNonBlank = 0;
			sc.SetState(SCE_F_DEFAULT);
		}
		if (!IsASpaceOrTab(sc.ch)) numNonBlank ++;
		/***********************************************/
		// Handle the fix format generically
		int toLineStart = sc.currentPos - posLineStart;
		if (isFixFormat && (toLineStart < 6 || toLineStart > 72)) {
			if (toLineStart == 0 && (tolower(sc.ch) == 'c' || sc.ch == '*') || sc.ch == '!') {
				sc.SetState(SCE_F_COMMENT);
				while (!sc.atLineEnd && sc.More()) sc.Forward(); // Until line end
			} else if (toLineStart > 72) {
				sc.SetState(SCE_F_COMMENT);
				while (!sc.atLineEnd && sc.More()) sc.Forward(); // Until line end
			} else if (toLineStart < 5) {
				if (IsADigit(sc.ch))
					sc.SetState(SCE_F_LABEL);
				else
					sc.SetState(SCE_F_DEFAULT);
			} else if (toLineStart == 5) {
				if (!IsASpace(sc.ch) && sc.ch != '0') {
					sc.SetState(SCE_F_CONTINUATION);
					sc.ForwardSetState(prevState);
				} else
					sc.SetState(SCE_F_DEFAULT);
			}
			continue;
		}
		/***************************************/
		// Handle line continuation generically.
		if (!isFixFormat && sc.ch == '&') {
			char chTemp = ' ';
			int j = 1;
			while (IsABlank(chTemp) && j<132) {
				chTemp = static_cast<char>(sc.GetRelative(j));
				j++;
			}
			if (chTemp == '!') {
				sc.SetState(SCE_F_CONTINUATION);
				if (sc.chNext == '!') sc.ForwardSetState(SCE_F_COMMENT);
			} else if (chTemp == '\r' || chTemp == '\n') {
				int currentState = sc.state;
				sc.SetState(SCE_F_CONTINUATION);
				sc.ForwardSetState(SCE_F_DEFAULT);
				while (IsASpace(sc.ch) && sc.More()) sc.Forward();
				if (sc.ch == '&') {
					sc.SetState(SCE_F_CONTINUATION);
					sc.Forward();
				}
				sc.SetState(currentState);
			}
		}
		/***************************************/
		// Determine if the current state should terminate.
		if (sc.state == SCE_F_OPERATOR) {
			sc.SetState(SCE_F_DEFAULT);
		} else if (sc.state == SCE_F_NUMBER) {
			if (!(IsAWordChar(sc.ch) || sc.ch=='\'' || sc.ch=='\"' || sc.ch=='.')) {
				sc.SetState(SCE_F_DEFAULT);
			}
		} else if (sc.state == SCE_F_IDENTIFIER) {
			if (!IsAWordChar(sc.ch) || (sc.ch == '%')) {
				char s[100];
				sc.GetCurrentLowered(s, sizeof(s));
				if (keywords.InList(s)) {
					sc.ChangeState(SCE_F_WORD);
				} else if (keywords2.InList(s)) {
					sc.ChangeState(SCE_F_WORD2);
				} else if (keywords3.InList(s)) {
					sc.ChangeState(SCE_F_WORD3);
				}
				sc.SetState(SCE_F_DEFAULT);
			}
		} else if (sc.state == SCE_F_COMMENT || sc.state == SCE_F_PREPROCESSOR) {
			if (sc.ch == '\r' || sc.ch == '\n') {
				sc.SetState(SCE_F_DEFAULT);
			}
		} else if (sc.state == SCE_F_STRING1) {
			prevState = sc.state;
			if (sc.ch == '\'') {
				if (sc.chNext == '\'') {
					sc.Forward();
				} else {
					sc.ForwardSetState(SCE_F_DEFAULT);
					prevState = SCE_F_DEFAULT;
				}
			} else if (sc.atLineEnd) {
				sc.ChangeState(SCE_F_STRINGEOL);
				sc.ForwardSetState(SCE_F_DEFAULT);
			}
		} else if (sc.state == SCE_F_STRING2) {
			prevState = sc.state;
			if (sc.atLineEnd) {
				sc.ChangeState(SCE_F_STRINGEOL);
				sc.ForwardSetState(SCE_F_DEFAULT);
			} else if (sc.ch == '\"') {
				if (sc.chNext == '\"') {
					sc.Forward();
				} else {
					sc.ForwardSetState(SCE_F_DEFAULT);
					prevState = SCE_F_DEFAULT;
				}
			}
		} else if (sc.state == SCE_F_OPERATOR2) {
			if (sc.ch == '.') {
				sc.ForwardSetState(SCE_F_DEFAULT);
			}
		} else if (sc.state == SCE_F_CONTINUATION) {
			sc.SetState(SCE_F_DEFAULT);
		} else if (sc.state == SCE_F_LABEL) {
			if (!IsADigit(sc.ch)) {
				sc.SetState(SCE_F_DEFAULT);
			} else {
				if (isFixFormat && sc.currentPos-posLineStart > 4)
					sc.SetState(SCE_F_DEFAULT);
				else if (numNonBlank > 5)
					sc.SetState(SCE_F_DEFAULT);
			}
		}
		/***************************************/
		// Determine if a new state should be entered.
		if (sc.state == SCE_F_DEFAULT) {
			if (sc.ch == '!') {
				if (sc.chNext == '$') {
					sc.SetState(SCE_F_PREPROCESSOR);
				} else {
					sc.SetState(SCE_F_COMMENT);
				}
			} else if ((!isFixFormat) && IsADigit(sc.ch) && numNonBlank == 1) {
				sc.SetState(SCE_F_LABEL);
			} else if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
				sc.SetState(SCE_F_NUMBER);
			} else if ((tolower(sc.ch) == 'b' || tolower(sc.ch) == 'o' ||
					    tolower(sc.ch) == 'z') && (sc.chNext == '\"' || sc.chNext == '\'')) {
				sc.SetState(SCE_F_NUMBER);
				sc.Forward();
			} else if (sc.ch == '.' && isalpha(sc.chNext)) {
				sc.SetState(SCE_F_OPERATOR2);
			} else if (IsAWordStart(sc.ch)) {
				sc.SetState(SCE_F_IDENTIFIER);
			} else if (sc.ch == '\"') {
				sc.SetState(SCE_F_STRING2);
			} else if (sc.ch == '\'') {
				sc.SetState(SCE_F_STRING1);
			} else if (isoperator(static_cast<char>(sc.ch))) {
				sc.SetState(SCE_F_OPERATOR);
			}
		}
	}
	sc.Complete();
}
/***************************************/
// To determine the folding level depending on keywords
static int classifyFoldPointFortran(const char* s, const char* prevWord, const char chNextNonBlank) {
	int lev = 0;
	if ((strcmp(prevWord, "else") == 0 && strcmp(s, "if") == 0) || strcmp(s, "elseif") == 0)
		return -1;
	if (strcmp(s, "associate") == 0 || strcmp(s, "block") == 0
	    || strcmp(s, "blockdata") == 0 || strcmp(s, "select") == 0
	    || strcmp(s, "do") == 0 || strcmp(s, "enum") ==0
	    || strcmp(s, "function") == 0 || strcmp(s, "interface") == 0
		|| strcmp(s, "module") == 0 || strcmp(s, "program") == 0
		|| strcmp(s, "subroutine") == 0 || strcmp(s, "then") == 0
		|| (strcmp(s, "type") == 0 && chNextNonBlank != '(') ){
			if (strcmp(prevWord, "end") == 0)
				lev = 0;
			else
				lev = 1;
	} else if (strcmp(s, "end") == 0 && chNextNonBlank != '='
		|| strcmp(s, "endassociate") == 0 || strcmp(s, "endblock") == 0
		|| strcmp(s, "endblockdata") == 0 || strcmp(s, "endselect") == 0
		|| strcmp(s, "enddo") == 0 || strcmp(s, "endenum") ==0
		|| strcmp(s, "endif") == 0 || strcmp(s, "endforall") == 0
		|| strcmp(s, "endfunction") == 0 || strcmp(s, "endinterface") == 0
		|| strcmp(s, "endmodule") == 0 || strcmp(s, "endprogram") == 0
		|| strcmp(s, "endsubroutine") == 0 || strcmp(s, "endtype") == 0
		|| strcmp(s, "endwhere") == 0
		|| strcmp(s, "procedure") == 0 ) { // Take care of the module procedure statement
			lev = -1;
	} else if (strcmp(prevWord, "end") == 0 && strcmp(s, "if") == 0){ // end if
			lev = 0;
	}
	return lev;
}
// Folding the code
static void FoldFortranDoc(unsigned int startPos, int length, int initStyle,
						   Accessor &styler, bool isFixFormat) {
	//
	// bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
	// Do not know how to fold the comment at the moment.
	//
	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];
	char chNextNonBlank;
	int styleNext = styler.StyleAt(startPos);
	int style = initStyle;
	/***************************************/
	int lastStart = 0;
	char prevWord[32] = "", Label[6] = "";
	// Variables for do label folding.
	static int doLabels[100], posLabel=-1;
	/***************************************/
	for (unsigned int i = startPos; i < endPos; i++) {
		char ch = chNext;
		chNext = styler.SafeGetCharAt(i + 1);
		chNextNonBlank = chNext;
		unsigned int j=i+1;
		while(IsABlank(chNextNonBlank) && j<endPos) {
			j ++ ;
			chNextNonBlank = styler.SafeGetCharAt(j);
		}
		int stylePrev = style;
		style = styleNext;
		styleNext = styler.StyleAt(i + 1);
		bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
		//
		if (stylePrev == SCE_F_DEFAULT && (style == SCE_F_WORD || style == SCE_F_LABEL)) {
			// Store last word and label start point.
			lastStart = i;
		}
		/***************************************/
		if (style == SCE_F_WORD) {
			if(iswordchar(ch) && !iswordchar(chNext)) {
				char s[32];
				unsigned int k;
				for(k=0; (k<31 ) && (k<i-lastStart+1 ); k++) {
					s[k] = static_cast<char>(tolower(styler[lastStart+k]));
				}
				s[k] = '\0';
				// Handle the forall and where statement and structure.
				if (strcmp(s, "forall") == 0 || strcmp(s, "where") == 0) {
					if (strcmp(prevWord, "end") != 0) {
						j = i + 1;
						char chBrace = '(', chSeek = ')', ch1 = styler.SafeGetCharAt(j);
						// Find the position of the first (
						while (ch1 != chBrace && j<endPos) {
							j++;
							ch1 = styler.SafeGetCharAt(j);
						}
						char styBrace = styler.StyleAt(j);
						int depth = 1;
						char chAtPos;
						char styAtPos;
						while (j<endPos) {
							j++;
							chAtPos = styler.SafeGetCharAt(j);
							styAtPos = styler.StyleAt(j);
							if (styAtPos == styBrace) {
								if (chAtPos == chBrace) depth++;
								if (chAtPos == chSeek) depth--;
								if (depth == 0) break;
							}
						}
						while (j<endPos) {
							j++;
							chAtPos = styler.SafeGetCharAt(j);
							styAtPos = styler.StyleAt(j);
							if (styAtPos == SCE_F_COMMENT || IsABlank(chAtPos)) continue;
							if (isFixFormat) {
								if (!IsALineEnd(chAtPos)) {
									break;
								} else {
									if (lineCurrent < styler.GetLine(styler.Length()-1)) {
										j = styler.LineStart(lineCurrent+1);
										if (styler.StyleAt(j+5) == SCE_F_CONTINUATION) {
											j += 5;
											continue;
										} else {
											levelCurrent++;
											break;
										}
									}
								}
							} else {
								if (chAtPos == '&' && styler.StyleAt(j) == SCE_F_CONTINUATION) {
									j = GetContinuedPos(j+1, styler);
									continue;
								} else if (IsALineEnd(chAtPos)) {
									levelCurrent ++;
									break;
								} else {
									break;
								}
							}
						}
					}
				} else {
					levelCurrent += classifyFoldPointFortran(s, prevWord, chNextNonBlank);
					// Store the do Labels into array
					if (strcmp(s, "do") == 0 && IsADigit(chNextNonBlank)) {
						unsigned int k = 0;
						for (i=j; (i<j+5 && i<endPos); i++) {
							ch = styler.SafeGetCharAt(i);
							if (IsADigit(ch))
								Label[k++] = ch;
							else
								break;
						}
						Label[k] = '\0';
						posLabel ++;
						doLabels[posLabel] = atoi(Label);
					}
				}
				strcpy(prevWord, s);
			}
		} else if (style == SCE_F_LABEL) {
			if(IsADigit(ch) && !IsADigit(chNext)) {
				for(j = 0; ( j < 5 ) && ( j < i-lastStart+1 ); j++) {
					ch = styler.SafeGetCharAt(lastStart + j);
					if (IsADigit(ch) && styler.StyleAt(lastStart+j) == SCE_F_LABEL)
						Label[j] = ch;
					else
						break;
				}
				Label[j] = '\0';
				while (doLabels[posLabel] == atoi(Label) && posLabel > -1) {
					levelCurrent--;
					posLabel--;
				}
			}
		}
		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;
			strcpy(prevWord, "");
		}
		/***************************************/
		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 const char * const FortranWordLists[] = {
	"Primary keywords and identifiers",
	"Intrinsic functions",
	"Extended and user defined functions",
	0,
};
/***************************************/
static void ColouriseFortranDocFreeFormat(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
                            Accessor &styler) {
	ColouriseFortranDoc(startPos, length, initStyle, keywordlists, styler, false);
}
/***************************************/
static void ColouriseFortranDocFixFormat(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
                            Accessor &styler) {
	ColouriseFortranDoc(startPos, length, initStyle, keywordlists, styler, true);
}
/***************************************/
static void FoldFortranDocFreeFormat(unsigned int startPos, int length, int initStyle,
		WordList *[], Accessor &styler) {
	FoldFortranDoc(startPos, length, initStyle,styler, false);
}
/***************************************/
static void FoldFortranDocFixFormat(unsigned int startPos, int length, int initStyle,
		WordList *[], Accessor &styler) {
	FoldFortranDoc(startPos, length, initStyle,styler, true);
}
/***************************************/
LexerModule lmFortran(SCLEX_FORTRAN, ColouriseFortranDocFreeFormat, "fortran", FoldFortranDocFreeFormat, FortranWordLists);
LexerModule lmF77(SCLEX_F77, ColouriseFortranDocFixFormat, "f77", FoldFortranDocFixFormat, FortranWordLists);
Commit	Line	Data
9e730a78 RD	1	// Scintilla source code edit control
	2	/** @file LexFortran.cxx
	3	** Lexer for Fortran.
8e54aaed	4	** Writen by Chuan-jian Shen, Last changed Sep. 2003
9e730a78 RD	5	**/
	6	// Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
	7	// The License.txt file describes the conditions under which this software may be distributed.
8e54aaed	8	/***************************************/
9e730a78 RD	9	#include <stdlib.h>
	10	#include <string.h>
	11	#include <ctype.h>
	12	#include <stdio.h>
	13	#include <stdarg.h>
8e54aaed	14	/***************************************/
9e730a78	15	#include "Platform.h"
9e730a78 RD	16	#include "PropSet.h"
	17	#include "Accessor.h"
	18	#include "StyleContext.h"
	19	#include "KeyWords.h"
	20	#include "Scintilla.h"
	21	#include "SciLexer.h"
8e54aaed	22	/***********************************************/
9e730a78 RD	23	static inline bool IsAWordChar(const int ch) {
	24	return (ch < 0x80) && (isalnum(ch) \|\| ch == '_' \|\| ch == '%');
	25	}
8e54aaed	26	/**********************************************/
9e730a78 RD	27	static inline bool IsAWordStart(const int ch) {
	28	return (ch < 0x80) && (isalnum(ch));
	29	}
8e54aaed	30	/***************************************/
9e730a78 RD	31	inline bool IsABlank(unsigned int ch) {
	32	return (ch == ' ') \|\| (ch == 0x09) \|\| (ch == 0x0b) ;
	33	}
8e54aaed RD	34	/***************************************/
	35	inline bool IsALineEnd(char ch) {
	36	return ((ch == '\n') \|\| (ch == '\r')) ;
	37	}
	38	/***************************************/
	39	unsigned int GetContinuedPos(unsigned int pos, Accessor &styler) {
	40	while (!IsALineEnd(styler.SafeGetCharAt(pos++))) continue;
	41	if (styler.SafeGetCharAt(pos) == '\n') pos++;
	42	while (IsABlank(styler.SafeGetCharAt(pos++))) continue;
	43	char chCur = styler.SafeGetCharAt(pos);
	44	if (chCur == '&') {
	45	while (IsABlank(styler.SafeGetCharAt(++pos))) continue;
	46	return pos;
	47	} else {
	48	return pos;
	49	}
	50	}
	51	/***************************************/
	52	static void ColouriseFortranDoc(unsigned int startPos, int length, int initStyle,
	53	WordList *keywordlists[], Accessor &styler, bool isFixFormat) {
9e730a78 RD	54	WordList &keywords = *keywordlists[0];
	55	WordList &keywords2 = *keywordlists[1];
	56	WordList &keywords3 = *keywordlists[2];
8e54aaed RD	57	/***************************************/
8e54aaed RD	58	int posLineStart = 0, numNonBlank = 0, prevState = 0;
9e730a78	59	int endPos = startPos + length;
8e54aaed	60	/***************************************/
9e730a78 RD	61	// backtrack to the nearest keyword
	62	while ((startPos > 1) && (styler.StyleAt(startPos) != SCE_F_WORD)) {
	63	startPos--;
	64	}
	65	startPos = styler.LineStart(styler.GetLine(startPos));
	66	initStyle = styler.StyleAt(startPos - 1);
	67	StyleContext sc(startPos, endPos-startPos, initStyle, styler);
8e54aaed	68	/***************************************/
9e730a78	69	for (; sc.More(); sc.Forward()) {
8e54aaed	70	// remember the start position of the line
9e730a78 RD	71	if (sc.atLineStart) {
9e730a78 RD	72	posLineStart = sc.currentPos;
8e54aaed	73	numNonBlank = 0;
9e730a78 RD	74	sc.SetState(SCE_F_DEFAULT);
9e730a78 RD	75	}
8e54aaed RD	76	if (!IsASpaceOrTab(sc.ch)) numNonBlank ++;
	77	/***********************************************/
	78	// Handle the fix format generically
	79	int toLineStart = sc.currentPos - posLineStart;
	80	if (isFixFormat && (toLineStart < 6 \|\| toLineStart > 72)) {
	81	if (toLineStart == 0 && (tolower(sc.ch) == 'c' \|\| sc.ch == '*') \|\| sc.ch == '!') {
	82	sc.SetState(SCE_F_COMMENT);
	83	while (!sc.atLineEnd && sc.More()) sc.Forward(); // Until line end
	84	} else if (toLineStart > 72) {
	85	sc.SetState(SCE_F_COMMENT);
	86	while (!sc.atLineEnd && sc.More()) sc.Forward(); // Until line end
	87	} else if (toLineStart < 5) {
	88	if (IsADigit(sc.ch))
	89	sc.SetState(SCE_F_LABEL);
	90	else
	91	sc.SetState(SCE_F_DEFAULT);
	92	} else if (toLineStart == 5) {
	93	if (!IsASpace(sc.ch) && sc.ch != '0') {
	94	sc.SetState(SCE_F_CONTINUATION);
	95	sc.ForwardSetState(prevState);
	96	} else
	97	sc.SetState(SCE_F_DEFAULT);
	98	}
	99	continue;
	100	}
	101	/***************************************/
9e730a78	102	// Handle line continuation generically.
8e54aaed	103	if (!isFixFormat && sc.ch == '&') {
9e730a78 RD	104	char chTemp = ' ';
	105	int j = 1;
	106	while (IsABlank(chTemp) && j<132) {
	107	chTemp = static_cast<char>(sc.GetRelative(j));
8e54aaed	108	j++;
9e730a78 RD	109	}
	110	if (chTemp == '!') {
	111	sc.SetState(SCE_F_CONTINUATION);
	112	if (sc.chNext == '!') sc.ForwardSetState(SCE_F_COMMENT);
	113	} else if (chTemp == '\r' \|\| chTemp == '\n') {
	114	int currentState = sc.state;
	115	sc.SetState(SCE_F_CONTINUATION);
8e54aaed RD	116	sc.ForwardSetState(SCE_F_DEFAULT);
	117	while (IsASpace(sc.ch) && sc.More()) sc.Forward();
	118	if (sc.ch == '&') {
	119	sc.SetState(SCE_F_CONTINUATION);
	120	sc.Forward();
9e730a78	121	}
8e54aaed	122	sc.SetState(currentState);
9e730a78	123	}
9e730a78	124	}
8e54aaed	125	/***************************************/
9e730a78 RD	126	// Determine if the current state should terminate.
	127	if (sc.state == SCE_F_OPERATOR) {
	128	sc.SetState(SCE_F_DEFAULT);
	129	} else if (sc.state == SCE_F_NUMBER) {
8e54aaed	130	if (!(IsAWordChar(sc.ch) \|\| sc.ch=='\'' \|\| sc.ch=='\"' \|\| sc.ch=='.')) {
9e730a78 RD	131	sc.SetState(SCE_F_DEFAULT);
	132	}
	133	} else if (sc.state == SCE_F_IDENTIFIER) {
	134	if (!IsAWordChar(sc.ch) \|\| (sc.ch == '%')) {
	135	char s[100];
	136	sc.GetCurrentLowered(s, sizeof(s));
	137	if (keywords.InList(s)) {
	138	sc.ChangeState(SCE_F_WORD);
	139	} else if (keywords2.InList(s)) {
	140	sc.ChangeState(SCE_F_WORD2);
	141	} else if (keywords3.InList(s)) {
	142	sc.ChangeState(SCE_F_WORD3);
	143	}
	144	sc.SetState(SCE_F_DEFAULT);
	145	}
8e54aaed	146	} else if (sc.state == SCE_F_COMMENT \|\| sc.state == SCE_F_PREPROCESSOR) {
9e730a78 RD	147	if (sc.ch == '\r' \|\| sc.ch == '\n') {
	148	sc.SetState(SCE_F_DEFAULT);
	149	}
	150	} else if (sc.state == SCE_F_STRING1) {
	151	prevState = sc.state;
	152	if (sc.ch == '\'') {
	153	if (sc.chNext == '\'') {
	154	sc.Forward();
	155	} else {
	156	sc.ForwardSetState(SCE_F_DEFAULT);
	157	prevState = SCE_F_DEFAULT;
	158	}
	159	} else if (sc.atLineEnd) {
8e54aaed RD	160	sc.ChangeState(SCE_F_STRINGEOL);
8e54aaed RD	161	sc.ForwardSetState(SCE_F_DEFAULT);
9e730a78 RD	162	}
	163	} else if (sc.state == SCE_F_STRING2) {
	164	prevState = sc.state;
	165	if (sc.atLineEnd) {
8e54aaed RD	166	sc.ChangeState(SCE_F_STRINGEOL);
8e54aaed RD	167	sc.ForwardSetState(SCE_F_DEFAULT);
9e730a78 RD	168	} else if (sc.ch == '\"') {
	169	if (sc.chNext == '\"') {
	170	sc.Forward();
	171	} else {
	172	sc.ForwardSetState(SCE_F_DEFAULT);
	173	prevState = SCE_F_DEFAULT;
	174	}
	175	}
	176	} else if (sc.state == SCE_F_OPERATOR2) {
	177	if (sc.ch == '.') {
	178	sc.ForwardSetState(SCE_F_DEFAULT);
	179	}
	180	} else if (sc.state == SCE_F_CONTINUATION) {
	181	sc.SetState(SCE_F_DEFAULT);
	182	} else if (sc.state == SCE_F_LABEL) {
8e54aaed	183	if (!IsADigit(sc.ch)) {
9e730a78	184	sc.SetState(SCE_F_DEFAULT);
8e54aaed RD	185	} else {
	186	if (isFixFormat && sc.currentPos-posLineStart > 4)
	187	sc.SetState(SCE_F_DEFAULT);
	188	else if (numNonBlank > 5)
	189	sc.SetState(SCE_F_DEFAULT);
9e730a78 RD	190	}
9e730a78 RD	191	}
8e54aaed	192	/***************************************/
9e730a78 RD	193	// Determine if a new state should be entered.
9e730a78 RD	194	if (sc.state == SCE_F_DEFAULT) {
8e54aaed RD	195	if (sc.ch == '!') {
	196	if (sc.chNext == '$') {
	197	sc.SetState(SCE_F_PREPROCESSOR);
	198	} else {
9e730a78	199	sc.SetState(SCE_F_COMMENT);
9e730a78	200	}
8e54aaed RD	201	} else if ((!isFixFormat) && IsADigit(sc.ch) && numNonBlank == 1) {
8e54aaed RD	202	sc.SetState(SCE_F_LABEL);
9e730a78 RD	203	} else if (IsADigit(sc.ch) \|\| (sc.ch == '.' && IsADigit(sc.chNext))) {
9e730a78 RD	204	sc.SetState(SCE_F_NUMBER);
8e54aaed RD	205	} else if ((tolower(sc.ch) == 'b' \|\| tolower(sc.ch) == 'o' \|\|
	206	tolower(sc.ch) == 'z') && (sc.chNext == '\"' \|\| sc.chNext == '\'')) {
	207	sc.SetState(SCE_F_NUMBER);
	208	sc.Forward();
9e730a78 RD	209	} else if (sc.ch == '.' && isalpha(sc.chNext)) {
	210	sc.SetState(SCE_F_OPERATOR2);
	211	} else if (IsAWordStart(sc.ch)) {
	212	sc.SetState(SCE_F_IDENTIFIER);
9e730a78 RD	213	} else if (sc.ch == '\"') {
	214	sc.SetState(SCE_F_STRING2);
	215	} else if (sc.ch == '\'') {
	216	sc.SetState(SCE_F_STRING1);
	217	} else if (isoperator(static_cast<char>(sc.ch))) {
	218	sc.SetState(SCE_F_OPERATOR);
	219	}
	220	}
	221	}
	222	sc.Complete();
	223	}
8e54aaed RD	224	/***************************************/
	225	// To determine the folding level depending on keywords
	226	static int classifyFoldPointFortran(const char* s, const char* prevWord, const char chNextNonBlank) {
9e730a78	227	int lev = 0;
9e730a78 RD	228	if ((strcmp(prevWord, "else") == 0 && strcmp(s, "if") == 0) \|\| strcmp(s, "elseif") == 0)
	229	return -1;
	230	if (strcmp(s, "associate") == 0 \|\| strcmp(s, "block") == 0
	231	\|\| strcmp(s, "blockdata") == 0 \|\| strcmp(s, "select") == 0
	232	\|\| strcmp(s, "do") == 0 \|\| strcmp(s, "enum") ==0
8e54aaed RD	233	\|\| strcmp(s, "function") == 0 \|\| strcmp(s, "interface") == 0
	234	\|\| strcmp(s, "module") == 0 \|\| strcmp(s, "program") == 0
	235	\|\| strcmp(s, "subroutine") == 0 \|\| strcmp(s, "then") == 0
	236	\|\| (strcmp(s, "type") == 0 && chNextNonBlank != '(') ){
	237	if (strcmp(prevWord, "end") == 0)
	238	lev = 0;
	239	else
	240	lev = 1;
	241	} else if (strcmp(s, "end") == 0 && chNextNonBlank != '='
	242	\|\| strcmp(s, "endassociate") == 0 \|\| strcmp(s, "endblock") == 0
	243	\|\| strcmp(s, "endblockdata") == 0 \|\| strcmp(s, "endselect") == 0
	244	\|\| strcmp(s, "enddo") == 0 \|\| strcmp(s, "endenum") ==0
	245	\|\| strcmp(s, "endif") == 0 \|\| strcmp(s, "endforall") == 0
	246	\|\| strcmp(s, "endfunction") == 0 \|\| strcmp(s, "endinterface") == 0
	247	\|\| strcmp(s, "endmodule") == 0 \|\| strcmp(s, "endprogram") == 0
	248	\|\| strcmp(s, "endsubroutine") == 0 \|\| strcmp(s, "endtype") == 0
	249	\|\| strcmp(s, "endwhere") == 0
	250	\|\| strcmp(s, "procedure") == 0 ) { // Take care of the module procedure statement
	251	lev = -1;
	252	} else if (strcmp(prevWord, "end") == 0 && strcmp(s, "if") == 0){ // end if
	253	lev = 0;
9e730a78 RD	254	}
	255	return lev;
	256	}
8e54aaed RD	257	// Folding the code
	258	static void FoldFortranDoc(unsigned int startPos, int length, int initStyle,
	259	Accessor &styler, bool isFixFormat) {
	260	//
	261	// bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
9e730a78	262	// Do not know how to fold the comment at the moment.
8e54aaed	263	//
9e730a78 RD	264	bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
	265	unsigned int endPos = startPos + length;
	266	int visibleChars = 0;
	267	int lineCurrent = styler.GetLine(startPos);
	268	int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
	269	int levelCurrent = levelPrev;
	270	char chNext = styler[startPos];
8e54aaed	271	char chNextNonBlank;
9e730a78 RD	272	int styleNext = styler.StyleAt(startPos);
9e730a78 RD	273	int style = initStyle;
8e54aaed	274	/***************************************/
9e730a78	275	int lastStart = 0;
8e54aaed RD	276	char prevWord[32] = "", Label[6] = "";
	277	// Variables for do label folding.
	278	static int doLabels[100], posLabel=-1;
	279	/***************************************/
9e730a78 RD	280	for (unsigned int i = startPos; i < endPos; i++) {
	281	char ch = chNext;
	282	chNext = styler.SafeGetCharAt(i + 1);
8e54aaed RD	283	chNextNonBlank = chNext;
	284	unsigned int j=i+1;
	285	while(IsABlank(chNextNonBlank) && j<endPos) {
	286	j ++ ;
	287	chNextNonBlank = styler.SafeGetCharAt(j);
	288	}
9e730a78 RD	289	int stylePrev = style;
	290	style = styleNext;
	291	styleNext = styler.StyleAt(i + 1);
	292	bool atEOL = (ch == '\r' && chNext != '\n') \|\| (ch == '\n');
8e54aaed RD	293	//
	294	if (stylePrev == SCE_F_DEFAULT && (style == SCE_F_WORD \|\| style == SCE_F_LABEL)) {
	295	// Store last word and label start point.
9e730a78 RD	296	lastStart = i;
9e730a78 RD	297	}
8e54aaed	298	/***************************************/
9e730a78 RD	299	if (style == SCE_F_WORD) {
	300	if(iswordchar(ch) && !iswordchar(chNext)) {
	301	char s[32];
8e54aaed RD	302	unsigned int k;
	303	for(k=0; (k<31 ) && (k<i-lastStart+1 ); k++) {
	304	s[k] = static_cast<char>(tolower(styler[lastStart+k]));
	305	}
	306	s[k] = '\0';
	307	// Handle the forall and where statement and structure.
	308	if (strcmp(s, "forall") == 0 \|\| strcmp(s, "where") == 0) {
	309	if (strcmp(prevWord, "end") != 0) {
	310	j = i + 1;
	311	char chBrace = '(', chSeek = ')', ch1 = styler.SafeGetCharAt(j);
	312	// Find the position of the first (
	313	while (ch1 != chBrace && j<endPos) {
	314	j++;
	315	ch1 = styler.SafeGetCharAt(j);
	316	}
	317	char styBrace = styler.StyleAt(j);
	318	int depth = 1;
	319	char chAtPos;
	320	char styAtPos;
	321	while (j<endPos) {
	322	j++;
	323	chAtPos = styler.SafeGetCharAt(j);
	324	styAtPos = styler.StyleAt(j);
	325	if (styAtPos == styBrace) {
	326	if (chAtPos == chBrace) depth++;
	327	if (chAtPos == chSeek) depth--;
	328	if (depth == 0) break;
	329	}
	330	}
	331	while (j<endPos) {
	332	j++;
	333	chAtPos = styler.SafeGetCharAt(j);
	334	styAtPos = styler.StyleAt(j);
	335	if (styAtPos == SCE_F_COMMENT \|\| IsABlank(chAtPos)) continue;
	336	if (isFixFormat) {
	337	if (!IsALineEnd(chAtPos)) {
	338	break;
	339	} else {
	340	if (lineCurrent < styler.GetLine(styler.Length()-1)) {
	341	j = styler.LineStart(lineCurrent+1);
	342	if (styler.StyleAt(j+5) == SCE_F_CONTINUATION) {
	343	j += 5;
	344	continue;
	345	} else {
	346	levelCurrent++;
	347	break;
	348	}
	349	}
	350	}
	351	} else {
	352	if (chAtPos == '&' && styler.StyleAt(j) == SCE_F_CONTINUATION) {
	353	j = GetContinuedPos(j+1, styler);
	354	continue;
	355	} else if (IsALineEnd(chAtPos)) {
	356	levelCurrent ++;
	357	break;
	358	} else {
	359	break;
	360	}
	361	}
	362	}
	363	}
	364	} else {
	365	levelCurrent += classifyFoldPointFortran(s, prevWord, chNextNonBlank);
366	// Store the do Labels into array
367	if (strcmp(s, "do") == 0 && IsADigit(chNextNonBlank)) {
368	unsigned int k = 0;
369	for (i=j; (i<j+5 && i<endPos); i++) {
370	ch = styler.SafeGetCharAt(i);
371	if (IsADigit(ch))
372	Label[k++] = ch;
373	else
374	break;
375	}
376	Label[k] = '\0';
377	posLabel ++;
378	doLabels[posLabel] = atoi(Label);
379	}
9e730a78	380	}
9e730a78 RD	381	strcpy(prevWord, s);
9e730a78 RD	382	}
8e54aaed RD	383	} else if (style == SCE_F_LABEL) {
	384	if(IsADigit(ch) && !IsADigit(chNext)) {
	385	for(j = 0; ( j < 5 ) && ( j < i-lastStart+1 ); j++) {
	386	ch = styler.SafeGetCharAt(lastStart + j);
	387	if (IsADigit(ch) && styler.StyleAt(lastStart+j) == SCE_F_LABEL)
	388	Label[j] = ch;
	389	else
	390	break;
	391	}
	392	Label[j] = '\0';
	393	while (doLabels[posLabel] == atoi(Label) && posLabel > -1) {
	394	levelCurrent--;
	395	posLabel--;
	396	}
	397	}
9e730a78 RD	398	}
	399	if (atEOL) {
	400	int lev = levelPrev;
	401	if (visibleChars == 0 && foldCompact)
	402	lev \|= SC_FOLDLEVELWHITEFLAG;
	403	if ((levelCurrent > levelPrev) && (visibleChars > 0))
	404	lev \|= SC_FOLDLEVELHEADERFLAG;
	405	if (lev != styler.LevelAt(lineCurrent)) {
	406	styler.SetLevel(lineCurrent, lev);
	407	}
	408	lineCurrent++;
	409	levelPrev = levelCurrent;
	410	visibleChars = 0;
	411	strcpy(prevWord, "");
	412	}
8e54aaed RD	413	/***************************************/
8e54aaed RD	414	if (!isspacechar(ch)) visibleChars++;
9e730a78	415	}
8e54aaed	416	/***************************************/
9e730a78 RD	417	// Fill in the real level of the next line, keeping the current flags as they will be filled in later
	418	int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
	419	styler.SetLevel(lineCurrent, levelPrev \| flagsNext);
	420	}
8e54aaed	421	/***************************************/
9e730a78 RD	422	static const char * const FortranWordLists[] = {
	423	"Primary keywords and identifiers",
	424	"Intrinsic functions",
	425	"Extended and user defined functions",
	426	0,
	427	};
8e54aaed	428	/***************************************/
9e730a78 RD	429	static void ColouriseFortranDocFreeFormat(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
	430	Accessor &styler) {
	431	ColouriseFortranDoc(startPos, length, initStyle, keywordlists, styler, false);
	432	}
8e54aaed	433	/***************************************/
9e730a78 RD	434	static void ColouriseFortranDocFixFormat(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
	435	Accessor &styler) {
	436	ColouriseFortranDoc(startPos, length, initStyle, keywordlists, styler, true);
	437	}
8e54aaed RD	438	/***************************************/
	439	static void FoldFortranDocFreeFormat(unsigned int startPos, int length, int initStyle,
	440	WordList *[], Accessor &styler) {
	441	FoldFortranDoc(startPos, length, initStyle,styler, false);
	442	}
	443	/***************************************/
	444	static void FoldFortranDocFixFormat(unsigned int startPos, int length, int initStyle,
	445	WordList *[], Accessor &styler) {
	446	FoldFortranDoc(startPos, length, initStyle,styler, true);
	447	}
	448	/***************************************/
	449	LexerModule lmFortran(SCLEX_FORTRAN, ColouriseFortranDocFreeFormat, "fortran", FoldFortranDocFreeFormat, FortranWordLists);
	450	LexerModule lmF77(SCLEX_F77, ColouriseFortranDocFixFormat, "f77", FoldFortranDocFixFormat, FortranWordLists);