[wxWidgets.git] / src / stc / scintilla / lexers / 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 <stdio.h>
#include <stdarg.h>
#include <assert.h>
#include <ctype.h>
/***************************************/
#include "ILexer.h"
#include "Scintilla.h"
#include "SciLexer.h"

#include "WordList.h"
#include "LexAccessor.h"
#include "Accessor.h"
#include "StyleContext.h"
#include "CharacterSet.h"
#include "LexerModule.h"
/***************************************/

#ifdef SCI_NAMESPACE
using namespace Scintilla;
#endif

/***********************************************/
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 == '!') {
                if (sc.MatchIgnoreCase("cdec$") || sc.MatchIgnoreCase("*dec$") || sc.MatchIgnoreCase("!dec$") ||
                    sc.MatchIgnoreCase("cdir$") || sc.MatchIgnoreCase("*dir$") || sc.MatchIgnoreCase("!dir$") ||
                    sc.MatchIgnoreCase("cms$")  || sc.MatchIgnoreCase("*ms$")  || sc.MatchIgnoreCase("!ms$")  ||
                    sc.chNext == '$') {
                    sc.SetState(SCE_F_PREPROCESSOR);
				} else {
					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') {
				if (sc.ch != '\r' && sc.ch != '\n') {
					sc.SetState(SCE_F_CONTINUATION);
                    if (!IsASpace(sc.ch) && sc.ch != '0')
                        sc.ForwardSetState(prevState);
				} else
					sc.SetState(SCE_F_DEFAULT);
			}
			continue;
		}
		/***************************************/
		// Hanndle preprocessor directives
		if (sc.ch == '#' && numNonBlank == 1)
		{
            sc.SetState(SCE_F_PREPROCESSOR);
            while (!sc.atLineEnd && sc.More())
                sc.Forward(); // Until line end
		}
		/***************************************/
		// Handle line continuation generically.
		if (!isFixFormat && sc.ch == '&' && sc.state != SCE_F_COMMENT) {
			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.MatchIgnoreCase("!dec$") || sc.MatchIgnoreCase("!dir$") ||
                    sc.MatchIgnoreCase("!ms$") || sc.chNext == '$') {
					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 != '(')
        || strcmp(s, "critical") == 0){
			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, "endcritical") == 0
		|| (strcmp(s, "procedure") == 0 && strcmp(prevWord, "module") == 0) ) { // Take care of the "module procedure" statement
			lev = -1;
	} else if (strcmp(prevWord, "end") == 0 && strcmp(s, "if") == 0){ // end if
			lev = 0;
	} else if (strcmp(prevWord, "type") == 0 && strcmp(s, "is") == 0){ // type is
                        lev = -1;
        }
	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] = "";
	char Label[6] = "";
	// Variables for do label folding.
	static int doLabels[100];
	static int 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 (((isFixFormat && stylePrev == SCE_F_CONTINUATION) || stylePrev == SCE_F_DEFAULT || stylePrev == SCE_F_OPERATOR) && (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>
9e730a78 RD	10	#include <string.h>
9e730a78 RD	11	#include <stdio.h>
9e730a78 RD	12	#include <stdarg.h>
1dcf666d RD	13	#include <assert.h>
1dcf666d RD	14	#include <ctype.h>
8e54aaed	15	/***************************************/
1dcf666d	16	#include "ILexer.h"
9e730a78 RD	17	#include "Scintilla.h"
9e730a78 RD	18	#include "SciLexer.h"
7e0c58e9	19
1dcf666d RD	20	#include "WordList.h"
	21	#include "LexAccessor.h"
	22	#include "Accessor.h"
	23	#include "StyleContext.h"
	24	#include "CharacterSet.h"
	25	#include "LexerModule.h"
	26	/***************************************/
	27
7e0c58e9 RD	28	#ifdef SCI_NAMESPACE
	29	using namespace Scintilla;
	30	#endif
	31
8e54aaed	32	/***********************************************/
9e730a78 RD	33	static inline bool IsAWordChar(const int ch) {
	34	return (ch < 0x80) && (isalnum(ch) \|\| ch == '_' \|\| ch == '%');
	35	}
8e54aaed	36	/**********************************************/
9e730a78 RD	37	static inline bool IsAWordStart(const int ch) {
	38	return (ch < 0x80) && (isalnum(ch));
	39	}
8e54aaed	40	/***************************************/
9e730a78 RD	41	inline bool IsABlank(unsigned int ch) {
	42	return (ch == ' ') \|\| (ch == 0x09) \|\| (ch == 0x0b) ;
	43	}
8e54aaed RD	44	/***************************************/
	45	inline bool IsALineEnd(char ch) {
	46	return ((ch == '\n') \|\| (ch == '\r')) ;
	47	}
	48	/***************************************/
	49	unsigned int GetContinuedPos(unsigned int pos, Accessor &styler) {
	50	while (!IsALineEnd(styler.SafeGetCharAt(pos++))) continue;
	51	if (styler.SafeGetCharAt(pos) == '\n') pos++;
	52	while (IsABlank(styler.SafeGetCharAt(pos++))) continue;
	53	char chCur = styler.SafeGetCharAt(pos);
	54	if (chCur == '&') {
	55	while (IsABlank(styler.SafeGetCharAt(++pos))) continue;
	56	return pos;
	57	} else {
	58	return pos;
	59	}
	60	}
	61	/***************************************/
	62	static void ColouriseFortranDoc(unsigned int startPos, int length, int initStyle,
	63	WordList *keywordlists[], Accessor &styler, bool isFixFormat) {
9e730a78 RD	64	WordList &keywords = *keywordlists[0];
	65	WordList &keywords2 = *keywordlists[1];
	66	WordList &keywords3 = *keywordlists[2];
8e54aaed RD	67	/***************************************/
8e54aaed RD	68	int posLineStart = 0, numNonBlank = 0, prevState = 0;
9e730a78	69	int endPos = startPos + length;
8e54aaed	70	/***************************************/
9e730a78 RD	71	// backtrack to the nearest keyword
	72	while ((startPos > 1) && (styler.StyleAt(startPos) != SCE_F_WORD)) {
	73	startPos--;
	74	}
	75	startPos = styler.LineStart(styler.GetLine(startPos));
	76	initStyle = styler.StyleAt(startPos - 1);
	77	StyleContext sc(startPos, endPos-startPos, initStyle, styler);
8e54aaed	78	/***************************************/
9e730a78	79	for (; sc.More(); sc.Forward()) {
8e54aaed	80	// remember the start position of the line
9e730a78 RD	81	if (sc.atLineStart) {
9e730a78 RD	82	posLineStart = sc.currentPos;
8e54aaed	83	numNonBlank = 0;
9e730a78 RD	84	sc.SetState(SCE_F_DEFAULT);
9e730a78 RD	85	}
8e54aaed RD	86	if (!IsASpaceOrTab(sc.ch)) numNonBlank ++;
	87	/***********************************************/
	88	// Handle the fix format generically
	89	int toLineStart = sc.currentPos - posLineStart;
1dcf666d	90	if (isFixFormat && (toLineStart < 6 \|\| toLineStart >= 72)) {
9e96e16f RD	91	if ((toLineStart == 0 && (tolower(sc.ch) == 'c' \|\| sc.ch == '*')) \|\| sc.ch == '!') {
	92	if (sc.MatchIgnoreCase("cdec$") \|\| sc.MatchIgnoreCase("*dec$") \|\| sc.MatchIgnoreCase("!dec$") \|\|
	93	sc.MatchIgnoreCase("cdir$") \|\| sc.MatchIgnoreCase("*dir$") \|\| sc.MatchIgnoreCase("!dir$") \|\|
	94	sc.MatchIgnoreCase("cms$") \|\| sc.MatchIgnoreCase("*ms$") \|\| sc.MatchIgnoreCase("!ms$") \|\|
	95	sc.chNext == '$') {
	96	sc.SetState(SCE_F_PREPROCESSOR);
	97	} else {
	98	sc.SetState(SCE_F_COMMENT);
	99	}
	100
8e54aaed	101	while (!sc.atLineEnd && sc.More()) sc.Forward(); // Until line end
1dcf666d	102	} else if (toLineStart >= 72) {
8e54aaed RD	103	sc.SetState(SCE_F_COMMENT);
	104	while (!sc.atLineEnd && sc.More()) sc.Forward(); // Until line end
	105	} else if (toLineStart < 5) {
	106	if (IsADigit(sc.ch))
	107	sc.SetState(SCE_F_LABEL);
	108	else
	109	sc.SetState(SCE_F_DEFAULT);
	110	} else if (toLineStart == 5) {
1dcf666d RD	111	//if (!IsASpace(sc.ch) && sc.ch != '0') {
1dcf666d RD	112	if (sc.ch != '\r' && sc.ch != '\n') {
8e54aaed	113	sc.SetState(SCE_F_CONTINUATION);
1dcf666d RD	114	if (!IsASpace(sc.ch) && sc.ch != '0')
1dcf666d RD	115	sc.ForwardSetState(prevState);
8e54aaed RD	116	} else
	117	sc.SetState(SCE_F_DEFAULT);
	118	}
	119	continue;
	120	}
	121	/***************************************/
1dcf666d RD	122	// Hanndle preprocessor directives
	123	if (sc.ch == '#' && numNonBlank == 1)
	124	{
	125	sc.SetState(SCE_F_PREPROCESSOR);
	126	while (!sc.atLineEnd && sc.More())
	127	sc.Forward(); // Until line end
	128	}
	129	/***************************************/
9e730a78	130	// Handle line continuation generically.
1dcf666d	131	if (!isFixFormat && sc.ch == '&' && sc.state != SCE_F_COMMENT) {
9e730a78 RD	132	char chTemp = ' ';
	133	int j = 1;
	134	while (IsABlank(chTemp) && j<132) {
	135	chTemp = static_cast<char>(sc.GetRelative(j));
8e54aaed	136	j++;
9e730a78 RD	137	}
	138	if (chTemp == '!') {
	139	sc.SetState(SCE_F_CONTINUATION);
	140	if (sc.chNext == '!') sc.ForwardSetState(SCE_F_COMMENT);
	141	} else if (chTemp == '\r' \|\| chTemp == '\n') {
	142	int currentState = sc.state;
	143	sc.SetState(SCE_F_CONTINUATION);
8e54aaed RD	144	sc.ForwardSetState(SCE_F_DEFAULT);
	145	while (IsASpace(sc.ch) && sc.More()) sc.Forward();
	146	if (sc.ch == '&') {
	147	sc.SetState(SCE_F_CONTINUATION);
	148	sc.Forward();
9e730a78	149	}
8e54aaed	150	sc.SetState(currentState);
9e730a78	151	}
9e730a78	152	}
8e54aaed	153	/***************************************/
9e730a78 RD	154	// Determine if the current state should terminate.
	155	if (sc.state == SCE_F_OPERATOR) {
	156	sc.SetState(SCE_F_DEFAULT);
	157	} else if (sc.state == SCE_F_NUMBER) {
8e54aaed	158	if (!(IsAWordChar(sc.ch) \|\| sc.ch=='\'' \|\| sc.ch=='\"' \|\| sc.ch=='.')) {
9e730a78 RD	159	sc.SetState(SCE_F_DEFAULT);
	160	}
	161	} else if (sc.state == SCE_F_IDENTIFIER) {
	162	if (!IsAWordChar(sc.ch) \|\| (sc.ch == '%')) {
	163	char s[100];
	164	sc.GetCurrentLowered(s, sizeof(s));
	165	if (keywords.InList(s)) {
	166	sc.ChangeState(SCE_F_WORD);
	167	} else if (keywords2.InList(s)) {
	168	sc.ChangeState(SCE_F_WORD2);
	169	} else if (keywords3.InList(s)) {
	170	sc.ChangeState(SCE_F_WORD3);
	171	}
	172	sc.SetState(SCE_F_DEFAULT);
	173	}
8e54aaed	174	} else if (sc.state == SCE_F_COMMENT \|\| sc.state == SCE_F_PREPROCESSOR) {
9e730a78 RD	175	if (sc.ch == '\r' \|\| sc.ch == '\n') {
	176	sc.SetState(SCE_F_DEFAULT);
	177	}
	178	} else if (sc.state == SCE_F_STRING1) {
	179	prevState = sc.state;
	180	if (sc.ch == '\'') {
	181	if (sc.chNext == '\'') {
	182	sc.Forward();
	183	} else {
	184	sc.ForwardSetState(SCE_F_DEFAULT);
	185	prevState = SCE_F_DEFAULT;
	186	}
	187	} else if (sc.atLineEnd) {
8e54aaed RD	188	sc.ChangeState(SCE_F_STRINGEOL);
8e54aaed RD	189	sc.ForwardSetState(SCE_F_DEFAULT);
9e730a78 RD	190	}
	191	} else if (sc.state == SCE_F_STRING2) {
	192	prevState = sc.state;
	193	if (sc.atLineEnd) {
8e54aaed RD	194	sc.ChangeState(SCE_F_STRINGEOL);
8e54aaed RD	195	sc.ForwardSetState(SCE_F_DEFAULT);
9e730a78 RD	196	} else if (sc.ch == '\"') {
	197	if (sc.chNext == '\"') {
	198	sc.Forward();
	199	} else {
	200	sc.ForwardSetState(SCE_F_DEFAULT);
	201	prevState = SCE_F_DEFAULT;
	202	}
	203	}
	204	} else if (sc.state == SCE_F_OPERATOR2) {
	205	if (sc.ch == '.') {
	206	sc.ForwardSetState(SCE_F_DEFAULT);
	207	}
	208	} else if (sc.state == SCE_F_CONTINUATION) {
	209	sc.SetState(SCE_F_DEFAULT);
	210	} else if (sc.state == SCE_F_LABEL) {
8e54aaed	211	if (!IsADigit(sc.ch)) {
9e730a78	212	sc.SetState(SCE_F_DEFAULT);
8e54aaed RD	213	} else {
	214	if (isFixFormat && sc.currentPos-posLineStart > 4)
	215	sc.SetState(SCE_F_DEFAULT);
	216	else if (numNonBlank > 5)
	217	sc.SetState(SCE_F_DEFAULT);
9e730a78 RD	218	}
9e730a78 RD	219	}
8e54aaed	220	/***************************************/
9e730a78 RD	221	// Determine if a new state should be entered.
9e730a78 RD	222	if (sc.state == SCE_F_DEFAULT) {
8e54aaed	223	if (sc.ch == '!') {
9e96e16f RD	224	if (sc.MatchIgnoreCase("!dec$") \|\| sc.MatchIgnoreCase("!dir$") \|\|
9e96e16f RD	225	sc.MatchIgnoreCase("!ms$") \|\| sc.chNext == '$') {
8e54aaed RD	226	sc.SetState(SCE_F_PREPROCESSOR);
8e54aaed RD	227	} else {
9e730a78	228	sc.SetState(SCE_F_COMMENT);
9e730a78	229	}
8e54aaed RD	230	} else if ((!isFixFormat) && IsADigit(sc.ch) && numNonBlank == 1) {
8e54aaed RD	231	sc.SetState(SCE_F_LABEL);
9e730a78 RD	232	} else if (IsADigit(sc.ch) \|\| (sc.ch == '.' && IsADigit(sc.chNext))) {
9e730a78 RD	233	sc.SetState(SCE_F_NUMBER);
8e54aaed RD	234	} else if ((tolower(sc.ch) == 'b' \|\| tolower(sc.ch) == 'o' \|\|
	235	tolower(sc.ch) == 'z') && (sc.chNext == '\"' \|\| sc.chNext == '\'')) {
	236	sc.SetState(SCE_F_NUMBER);
	237	sc.Forward();
9e730a78 RD	238	} else if (sc.ch == '.' && isalpha(sc.chNext)) {
	239	sc.SetState(SCE_F_OPERATOR2);
	240	} else if (IsAWordStart(sc.ch)) {
	241	sc.SetState(SCE_F_IDENTIFIER);
9e730a78 RD	242	} else if (sc.ch == '\"') {
	243	sc.SetState(SCE_F_STRING2);
	244	} else if (sc.ch == '\'') {
	245	sc.SetState(SCE_F_STRING1);
	246	} else if (isoperator(static_cast<char>(sc.ch))) {
	247	sc.SetState(SCE_F_OPERATOR);
	248	}
	249	}
	250	}
	251	sc.Complete();
	252	}
8e54aaed RD	253	/***************************************/
	254	// To determine the folding level depending on keywords
	255	static int classifyFoldPointFortran(const char* s, const char* prevWord, const char chNextNonBlank) {
9e730a78	256	int lev = 0;
9e730a78 RD	257	if ((strcmp(prevWord, "else") == 0 && strcmp(s, "if") == 0) \|\| strcmp(s, "elseif") == 0)
	258	return -1;
	259	if (strcmp(s, "associate") == 0 \|\| strcmp(s, "block") == 0
	260	\|\| strcmp(s, "blockdata") == 0 \|\| strcmp(s, "select") == 0
	261	\|\| strcmp(s, "do") == 0 \|\| strcmp(s, "enum") ==0
8e54aaed RD	262	\|\| strcmp(s, "function") == 0 \|\| strcmp(s, "interface") == 0
	263	\|\| strcmp(s, "module") == 0 \|\| strcmp(s, "program") == 0
	264	\|\| strcmp(s, "subroutine") == 0 \|\| strcmp(s, "then") == 0
1dcf666d RD	265	\|\| (strcmp(s, "type") == 0 && chNextNonBlank != '(')
1dcf666d RD	266	\|\| strcmp(s, "critical") == 0){
8e54aaed RD	267	if (strcmp(prevWord, "end") == 0)
	268	lev = 0;
	269	else
	270	lev = 1;
9e96e16f	271	} else if ((strcmp(s, "end") == 0 && chNextNonBlank != '=')
8e54aaed RD	272	\|\| strcmp(s, "endassociate") == 0 \|\| strcmp(s, "endblock") == 0
	273	\|\| strcmp(s, "endblockdata") == 0 \|\| strcmp(s, "endselect") == 0
	274	\|\| strcmp(s, "enddo") == 0 \|\| strcmp(s, "endenum") ==0
	275	\|\| strcmp(s, "endif") == 0 \|\| strcmp(s, "endforall") == 0
	276	\|\| strcmp(s, "endfunction") == 0 \|\| strcmp(s, "endinterface") == 0
	277	\|\| strcmp(s, "endmodule") == 0 \|\| strcmp(s, "endprogram") == 0
	278	\|\| strcmp(s, "endsubroutine") == 0 \|\| strcmp(s, "endtype") == 0
1dcf666d RD	279	\|\| strcmp(s, "endwhere") == 0 \|\| strcmp(s, "endcritical") == 0
1dcf666d RD	280	\|\| (strcmp(s, "procedure") == 0 && strcmp(prevWord, "module") == 0) ) { // Take care of the "module procedure" statement
8e54aaed RD	281	lev = -1;
	282	} else if (strcmp(prevWord, "end") == 0 && strcmp(s, "if") == 0){ // end if
	283	lev = 0;
1dcf666d RD	284	} else if (strcmp(prevWord, "type") == 0 && strcmp(s, "is") == 0){ // type is
	285	lev = -1;
	286	}
9e730a78 RD	287	return lev;
9e730a78 RD	288	}
8e54aaed RD	289	// Folding the code
	290	static void FoldFortranDoc(unsigned int startPos, int length, int initStyle,
	291	Accessor &styler, bool isFixFormat) {
	292	//
	293	// bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
9e730a78	294	// Do not know how to fold the comment at the moment.
8e54aaed	295	//
9e730a78 RD	296	bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
	297	unsigned int endPos = startPos + length;
	298	int visibleChars = 0;
	299	int lineCurrent = styler.GetLine(startPos);
	300	int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
	301	int levelCurrent = levelPrev;
	302	char chNext = styler[startPos];
8e54aaed	303	char chNextNonBlank;
9e730a78 RD	304	int styleNext = styler.StyleAt(startPos);
9e730a78 RD	305	int style = initStyle;
8e54aaed	306	/***************************************/
9e730a78	307	int lastStart = 0;
1e9bafca RD	308	char prevWord[32] = "";
1e9bafca RD	309	char Label[6] = "";
8e54aaed	310	// Variables for do label folding.
1e9bafca RD	311	static int doLabels[100];
1e9bafca RD	312	static int posLabel=-1;
8e54aaed	313	/***************************************/
9e730a78 RD	314	for (unsigned int i = startPos; i < endPos; i++) {
	315	char ch = chNext;
	316	chNext = styler.SafeGetCharAt(i + 1);
8e54aaed RD	317	chNextNonBlank = chNext;
	318	unsigned int j=i+1;
	319	while(IsABlank(chNextNonBlank) && j<endPos) {
	320	j ++ ;
	321	chNextNonBlank = styler.SafeGetCharAt(j);
	322	}
9e730a78 RD	323	int stylePrev = style;
	324	style = styleNext;
	325	styleNext = styler.StyleAt(i + 1);
	326	bool atEOL = (ch == '\r' && chNext != '\n') \|\| (ch == '\n');
8e54aaed	327	//
1dcf666d	328	if (((isFixFormat && stylePrev == SCE_F_CONTINUATION) \|\| stylePrev == SCE_F_DEFAULT \|\| stylePrev == SCE_F_OPERATOR) && (style == SCE_F_WORD \|\| style == SCE_F_LABEL)) {
8e54aaed	329	// Store last word and label start point.
9e730a78 RD	330	lastStart = i;
9e730a78 RD	331	}
8e54aaed	332	/***************************************/
9e730a78 RD	333	if (style == SCE_F_WORD) {
	334	if(iswordchar(ch) && !iswordchar(chNext)) {
	335	char s[32];
8e54aaed RD	336	unsigned int k;
	337	for(k=0; (k<31 ) && (k<i-lastStart+1 ); k++) {
	338	s[k] = static_cast<char>(tolower(styler[lastStart+k]));
	339	}
	340	s[k] = '\0';
	341	// Handle the forall and where statement and structure.
	342	if (strcmp(s, "forall") == 0 \|\| strcmp(s, "where") == 0) {
	343	if (strcmp(prevWord, "end") != 0) {
	344	j = i + 1;
	345	char chBrace = '(', chSeek = ')', ch1 = styler.SafeGetCharAt(j);
	346	// Find the position of the first (
	347	while (ch1 != chBrace && j<endPos) {
	348	j++;
	349	ch1 = styler.SafeGetCharAt(j);
	350	}
	351	char styBrace = styler.StyleAt(j);
	352	int depth = 1;
	353	char chAtPos;
	354	char styAtPos;
	355	while (j<endPos) {
	356	j++;
	357	chAtPos = styler.SafeGetCharAt(j);
	358	styAtPos = styler.StyleAt(j);
	359	if (styAtPos == styBrace) {
	360	if (chAtPos == chBrace) depth++;
	361	if (chAtPos == chSeek) depth--;
	362	if (depth == 0) break;
	363	}
	364	}
	365	while (j<endPos) {
	366	j++;
	367	chAtPos = styler.SafeGetCharAt(j);
	368	styAtPos = styler.StyleAt(j);
	369	if (styAtPos == SCE_F_COMMENT \|\| IsABlank(chAtPos)) continue;
	370	if (isFixFormat) {
	371	if (!IsALineEnd(chAtPos)) {
	372	break;
	373	} else {
	374	if (lineCurrent < styler.GetLine(styler.Length()-1)) {
	375	j = styler.LineStart(lineCurrent+1);
	376	if (styler.StyleAt(j+5) == SCE_F_CONTINUATION) {
	377	j += 5;
	378	continue;
	379	} else {
	380	levelCurrent++;
	381	break;
	382	}
	383	}
	384	}
	385	} else {
	386	if (chAtPos == '&' && styler.StyleAt(j) == SCE_F_CONTINUATION) {
	387	j = GetContinuedPos(j+1, styler);
	388	continue;
	389	} else if (IsALineEnd(chAtPos)) {
	390	levelCurrent ++;
	391	break;
	392	} else {
	393	break;
	394	}
	395	}
	396	}
	397	}
	398	} else {
	399	levelCurrent += classifyFoldPointFortran(s, prevWord, chNextNonBlank);
400	// Store the do Labels into array
401	if (strcmp(s, "do") == 0 && IsADigit(chNextNonBlank)) {
402	unsigned int k = 0;
403	for (i=j; (i<j+5 && i<endPos); i++) {
404	ch = styler.SafeGetCharAt(i);
405	if (IsADigit(ch))
406	Label[k++] = ch;
407	else
408	break;
409	}
410	Label[k] = '\0';
411	posLabel ++;
412	doLabels[posLabel] = atoi(Label);
413	}
9e730a78	414	}
9e730a78 RD	415	strcpy(prevWord, s);
9e730a78 RD	416	}
8e54aaed RD	417	} else if (style == SCE_F_LABEL) {
	418	if(IsADigit(ch) && !IsADigit(chNext)) {
	419	for(j = 0; ( j < 5 ) && ( j < i-lastStart+1 ); j++) {
	420	ch = styler.SafeGetCharAt(lastStart + j);
	421	if (IsADigit(ch) && styler.StyleAt(lastStart+j) == SCE_F_LABEL)
	422	Label[j] = ch;
	423	else
	424	break;
	425	}
	426	Label[j] = '\0';
	427	while (doLabels[posLabel] == atoi(Label) && posLabel > -1) {
	428	levelCurrent--;
	429	posLabel--;
	430	}
	431	}
9e730a78 RD	432	}
	433	if (atEOL) {
	434	int lev = levelPrev;
	435	if (visibleChars == 0 && foldCompact)
	436	lev \|= SC_FOLDLEVELWHITEFLAG;
	437	if ((levelCurrent > levelPrev) && (visibleChars > 0))
	438	lev \|= SC_FOLDLEVELHEADERFLAG;
	439	if (lev != styler.LevelAt(lineCurrent)) {
	440	styler.SetLevel(lineCurrent, lev);
	441	}
	442	lineCurrent++;
	443	levelPrev = levelCurrent;
	444	visibleChars = 0;
	445	strcpy(prevWord, "");
	446	}
8e54aaed RD	447	/***************************************/
8e54aaed RD	448	if (!isspacechar(ch)) visibleChars++;
9e730a78	449	}
8e54aaed	450	/***************************************/
9e730a78 RD	451	// Fill in the real level of the next line, keeping the current flags as they will be filled in later
	452	int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
	453	styler.SetLevel(lineCurrent, levelPrev \| flagsNext);
	454	}
8e54aaed	455	/***************************************/
9e730a78 RD	456	static const char * const FortranWordLists[] = {
	457	"Primary keywords and identifiers",
	458	"Intrinsic functions",
	459	"Extended and user defined functions",
	460	0,
	461	};
8e54aaed	462	/***************************************/
9e730a78 RD	463	static void ColouriseFortranDocFreeFormat(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
	464	Accessor &styler) {
	465	ColouriseFortranDoc(startPos, length, initStyle, keywordlists, styler, false);
	466	}
8e54aaed	467	/***************************************/
9e730a78 RD	468	static void ColouriseFortranDocFixFormat(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
	469	Accessor &styler) {
	470	ColouriseFortranDoc(startPos, length, initStyle, keywordlists, styler, true);
	471	}
8e54aaed RD	472	/***************************************/
	473	static void FoldFortranDocFreeFormat(unsigned int startPos, int length, int initStyle,
	474	WordList *[], Accessor &styler) {
	475	FoldFortranDoc(startPos, length, initStyle,styler, false);
	476	}
	477	/***************************************/
	478	static void FoldFortranDocFixFormat(unsigned int startPos, int length, int initStyle,
	479	WordList *[], Accessor &styler) {
	480	FoldFortranDoc(startPos, length, initStyle,styler, true);
	481	}
	482	/***************************************/
	483	LexerModule lmFortran(SCLEX_FORTRAN, ColouriseFortranDocFreeFormat, "fortran", FoldFortranDocFreeFormat, FortranWordLists);
	484	LexerModule lmF77(SCLEX_F77, ColouriseFortranDocFixFormat, "f77", FoldFortranDocFixFormat, FortranWordLists);