[wxWidgets.git] / src / stc / scintilla / lexers / LexTAL.cxx

// Scintilla source code edit control
/** @file LexTAL.cxx
 ** Lexer for TAL
 ** Based on LexPascal.cxx
 ** Written by Laurent le Tynevez
 ** Updated by Simon Steele <s.steele@pnotepad.org> September 2002
 ** Updated by Mathias Rauen <scite@madshi.net> May 2003 (Delphi adjustments)
 ** Updated by Rod Falck, Aug 2006 Converted to TAL
 **/

#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

inline bool isTALoperator(char ch)
	{
	return ch == '\'' || ch == '@' || ch == '#' || isoperator(ch);
	}

inline bool isTALwordchar(char ch)
	{
	return ch == '$' || ch == '^' || iswordchar(ch);
	}

inline bool isTALwordstart(char ch)
	{
	return ch == '$' || ch == '^' || iswordstart(ch);
	}

static void getRange(unsigned int start,
		unsigned int end,
		Accessor &styler,
		char *s,
		unsigned int len) {
	unsigned int i = 0;
	while ((i < end - start + 1) && (i < len-1)) {
		s[i] = static_cast<char>(tolower(styler[start + i]));
		i++;
	}
	s[i] = '\0';
}

static bool IsStreamCommentStyle(int style) {
	return style == SCE_C_COMMENT ||
		style == SCE_C_COMMENTDOC ||
		style == SCE_C_COMMENTDOCKEYWORD ||
		style == SCE_C_COMMENTDOCKEYWORDERROR;
}

static void ColourTo(Accessor &styler, unsigned int end, unsigned int attr, bool bInAsm) {
	if ((bInAsm) && (attr == SCE_C_OPERATOR || attr == SCE_C_NUMBER || attr == SCE_C_DEFAULT || attr == SCE_C_WORD || attr == SCE_C_IDENTIFIER)) {
		styler.ColourTo(end, SCE_C_REGEX);
	} else
		styler.ColourTo(end, attr);
}

// returns 1 if the item starts a class definition, and -1 if the word is "end", and 2 if the word is "asm"
static int classifyWordTAL(unsigned int start, unsigned int end, /*WordList &keywords*/WordList *keywordlists[], Accessor &styler, bool bInAsm) {
	int ret = 0;

	WordList& keywords = *keywordlists[0];
	WordList& builtins = *keywordlists[1];
	WordList& nonreserved_keywords = *keywordlists[2];

	char s[100];
	getRange(start, end, styler, s, sizeof(s));

	char chAttr = SCE_C_IDENTIFIER;
	if (isdigit(s[0]) || (s[0] == '.')) {
		chAttr = SCE_C_NUMBER;
	}
	else {
		if (keywords.InList(s)) {
			chAttr = SCE_C_WORD;

			if (strcmp(s, "asm") == 0) {
				ret = 2;
			}
			else if (strcmp(s, "end") == 0) {
				ret = -1;
			}
		}
		else if (s[0] == '$' || builtins.InList(s)) {
			chAttr = SCE_C_WORD2;
		}
		else if (nonreserved_keywords.InList(s)) {
			chAttr = SCE_C_UUID;
		}
	}
	ColourTo(styler, end, chAttr, (bInAsm && ret != -1));
	return ret;
}

static int classifyFoldPointTAL(const char* s) {
	int lev = 0;
	if (!(isdigit(s[0]) || (s[0] == '.'))) {
		if (strcmp(s, "begin") == 0 ||
			strcmp(s, "block") == 0) {
			lev=1;
		} else if (strcmp(s, "end") == 0) {
			lev=-1;
		}
	}
	return lev;
}

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

	styler.StartAt(startPos);

	int state = initStyle;
	if (state == SCE_C_CHARACTER)	// Does not leak onto next line
		state = SCE_C_DEFAULT;
	char chPrev = ' ';
	char chNext = styler[startPos];
	unsigned int lengthDoc = startPos + length;

	bool bInClassDefinition;

	int currentLine = styler.GetLine(startPos);
	if (currentLine > 0) {
		styler.SetLineState(currentLine, styler.GetLineState(currentLine-1));
		bInClassDefinition = (styler.GetLineState(currentLine) == 1);
	} else {
		styler.SetLineState(currentLine, 0);
		bInClassDefinition = false;
	}

	bool bInAsm = (state == SCE_C_REGEX);
	if (bInAsm)
		state = SCE_C_DEFAULT;

	styler.StartSegment(startPos);
	int visibleChars = 0;
	for (unsigned int i = startPos; i < lengthDoc; i++) {
		char ch = chNext;

		chNext = styler.SafeGetCharAt(i + 1);

		if ((ch == '\r' && chNext != '\n') || (ch == '\n')) {
			// Trigger on CR only (Mac style) or either on LF from CR+LF (Dos/Win) or on LF alone (Unix)
			// Avoid triggering two times on Dos/Win
			// End of line
			if (state == SCE_C_CHARACTER) {
				ColourTo(styler, i, state, bInAsm);
				state = SCE_C_DEFAULT;
			}
			visibleChars = 0;
			currentLine++;
			styler.SetLineState(currentLine, (bInClassDefinition ? 1 : 0));
		}

		if (styler.IsLeadByte(ch)) {
			chNext = styler.SafeGetCharAt(i + 2);
			chPrev = ' ';
			i += 1;
			continue;
		}

		if (state == SCE_C_DEFAULT) {
			if (isTALwordstart(ch)) {
				ColourTo(styler, i-1, state, bInAsm);
				state = SCE_C_IDENTIFIER;
			} else if (ch == '!' && chNext != '*') {
				ColourTo(styler, i-1, state, bInAsm);
				state = SCE_C_COMMENT;
			} else if (ch == '!' && chNext == '*') {
				ColourTo(styler, i-1, state, bInAsm);
				state = SCE_C_COMMENTDOC;
			} else if (ch == '-' && chNext == '-') {
				ColourTo(styler, i-1, state, bInAsm);
				state = SCE_C_COMMENTLINE;
			} else if (ch == '"') {
				ColourTo(styler, i-1, state, bInAsm);
				state = SCE_C_STRING;
			} else if (ch == '?' && visibleChars == 0) {
				ColourTo(styler, i-1, state, bInAsm);
				state = SCE_C_PREPROCESSOR;
			} else if (isTALoperator(ch)) {
				ColourTo(styler, i-1, state, bInAsm);
				ColourTo(styler, i, SCE_C_OPERATOR, bInAsm);
			}
		} else if (state == SCE_C_IDENTIFIER) {
			if (!isTALwordchar(ch)) {
				int lStateChange = classifyWordTAL(styler.GetStartSegment(), i - 1, keywordlists, styler, bInAsm);

				if(lStateChange == 1) {
					styler.SetLineState(currentLine, 1);
					bInClassDefinition = true;
				} else if(lStateChange == 2) {
					bInAsm = true;
				} else if(lStateChange == -1) {
					styler.SetLineState(currentLine, 0);
					bInClassDefinition = false;
					bInAsm = false;
				}

				state = SCE_C_DEFAULT;
				chNext = styler.SafeGetCharAt(i + 1);
				if (ch == '!' && chNext != '*') {
					state = SCE_C_COMMENT;
				} else if (ch == '!' && chNext == '*') {
					ColourTo(styler, i-1, state, bInAsm);
					state = SCE_C_COMMENTDOC;
				} else if (ch == '-' && chNext == '-') {
					state = SCE_C_COMMENTLINE;
				} else if (ch == '"') {
					state = SCE_C_STRING;
				} else if (isTALoperator(ch)) {
					ColourTo(styler, i, SCE_C_OPERATOR, bInAsm);
				}
			}
		} else {
			if (state == SCE_C_PREPROCESSOR) {
				if ((ch == '\r' || ch == '\n') && !(chPrev == '\\' || chPrev == '\r')) {
					ColourTo(styler, i-1, state, bInAsm);
					state = SCE_C_DEFAULT;
				}
			} else if (state == SCE_C_COMMENT) {
				if (ch == '!' || (ch == '\r' || ch == '\n') ) {
					ColourTo(styler, i, state, bInAsm);
					state = SCE_C_DEFAULT;
				}
			} else if (state == SCE_C_COMMENTDOC) {
				if (ch == '!' || (ch == '\r' || ch == '\n')) {
					if (((i > styler.GetStartSegment() + 2) || (
						(initStyle == SCE_C_COMMENTDOC) &&
						(styler.GetStartSegment() == static_cast<unsigned int>(startPos))))) {
							ColourTo(styler, i, state, bInAsm);
							state = SCE_C_DEFAULT;
					}
				}
			} else if (state == SCE_C_COMMENTLINE) {
				if (ch == '\r' || ch == '\n') {
					ColourTo(styler, i-1, state, bInAsm);
					state = SCE_C_DEFAULT;
				}
			} else if (state == SCE_C_STRING) {
				if (ch == '"') {
					ColourTo(styler, i, state, bInAsm);
					state = SCE_C_DEFAULT;
				}
			}
		}
        if (!isspacechar(ch))
            visibleChars++;
		chPrev = ch;
	}
	ColourTo(styler, lengthDoc - 1, state, bInAsm);
}

static void FoldTALDoc(unsigned int startPos, int length, int initStyle, WordList *[],
                            Accessor &styler) {
	bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
	bool foldPreprocessor = styler.GetPropertyInt("fold.preprocessor") != 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);
	int style = initStyle;
	bool was_end = false;
	bool section = false;

	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_C_DEFAULT && (style == SCE_C_WORD || style == SCE_C_UUID || style == SCE_C_PREPROCESSOR))
		{
			// Store last word start point.
			lastStart = i;
		}

		if (stylePrev == SCE_C_WORD || style == SCE_C_UUID || stylePrev == SCE_C_PREPROCESSOR) {
			if(isTALwordchar(ch) && !isTALwordchar(chNext)) {
				char s[100];
				getRange(lastStart, i, styler, s, sizeof(s));
				if (stylePrev == SCE_C_PREPROCESSOR && strcmp(s, "?section") == 0)
					{
					section = true;
					levelCurrent = 1;
					levelPrev = 0;
					}
				else if (stylePrev == SCE_C_WORD || stylePrev == SCE_C_UUID)
					{
					if (strcmp(s, "block") == 0)
						{
						// block keyword is ignored immediately after end keyword
						if (!was_end)
							levelCurrent++;
						}
					else
						levelCurrent += classifyFoldPointTAL(s);
					if (strcmp(s, "end") == 0)
						{
						was_end = true;
						}
					else
						{
						was_end = false;
						}
					}
			}
		}

		if (foldComment && (style == SCE_C_COMMENTLINE)) {
			if ((ch == '/') && (chNext == '/')) {
				char chNext2 = styler.SafeGetCharAt(i + 2);
				if (chNext2 == '{') {
					levelCurrent++;
				} else if (chNext2 == '}') {
					levelCurrent--;
				}
			}
		}

		if (foldPreprocessor && (style == SCE_C_PREPROCESSOR)) {
			if (ch == '{' && chNext == '$') {
				unsigned int j=i+2; // skip {$
				while ((j<endPos) && IsASpaceOrTab(styler.SafeGetCharAt(j))) {
					j++;
				}
				if (styler.Match(j, "region") || styler.Match(j, "if")) {
					levelCurrent++;
				} else if (styler.Match(j, "end")) {
					levelCurrent--;
				}
			}
		}

		if (foldComment && IsStreamCommentStyle(style)) {
			if (!IsStreamCommentStyle(stylePrev)) {
				levelCurrent++;
			} else if (!IsStreamCommentStyle(styleNext) && !atEOL) {
				// Comments don't end at end of line and the next character may be unstyled.
				levelCurrent--;
			}
		}

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

		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 TALWordListDesc[] = {
	"Keywords",
	"Builtins",
	0
};

LexerModule lmTAL(SCLEX_TAL, ColouriseTALDoc, "TAL", FoldTALDoc, TALWordListDesc);
Commit	Line	Data
9e96e16f RD	1	// Scintilla source code edit control
	2	/** @file LexTAL.cxx
	3	** Lexer for TAL
	4	** Based on LexPascal.cxx
	5	** Written by Laurent le Tynevez
	6	** Updated by Simon Steele <s.steele@pnotepad.org> September 2002
	7	** Updated by Mathias Rauen <scite@madshi.net> May 2003 (Delphi adjustments)
	8	** Updated by Rod Falck, Aug 2006 Converted to TAL
	9	**/
	10
	11	#include <stdlib.h>
	12	#include <string.h>
9e96e16f RD	13	#include <stdio.h>
9e96e16f RD	14	#include <stdarg.h>
1dcf666d RD	15	#include <assert.h>
1dcf666d RD	16	#include <ctype.h>
9e96e16f	17
1dcf666d	18	#include "ILexer.h"
9e96e16f RD	19	#include "Scintilla.h"
9e96e16f RD	20	#include "SciLexer.h"
1dcf666d RD	21
	22	#include "WordList.h"
	23	#include "LexAccessor.h"
	24	#include "Accessor.h"
9e96e16f	25	#include "StyleContext.h"
1dcf666d RD	26	#include "CharacterSet.h"
1dcf666d RD	27	#include "LexerModule.h"
9e96e16f RD	28
	29	#ifdef SCI_NAMESPACE
	30	using namespace Scintilla;
	31	#endif
	32
	33	inline bool isTALoperator(char ch)
	34	{
	35	return ch == '\'' \|\| ch == '@' \|\| ch == '#' \|\| isoperator(ch);
	36	}
	37
	38	inline bool isTALwordchar(char ch)
	39	{
	40	return ch == '$' \|\| ch == '^' \|\| iswordchar(ch);
	41	}
	42
	43	inline bool isTALwordstart(char ch)
	44	{
	45	return ch == '$' \|\| ch == '^' \|\| iswordstart(ch);
	46	}
	47
	48	static void getRange(unsigned int start,
	49	unsigned int end,
	50	Accessor &styler,
	51	char *s,
	52	unsigned int len) {
	53	unsigned int i = 0;
	54	while ((i < end - start + 1) && (i < len-1)) {
	55	s[i] = static_cast<char>(tolower(styler[start + i]));
	56	i++;
	57	}
	58	s[i] = '\0';
	59	}
	60
	61	static bool IsStreamCommentStyle(int style) {
	62	return style == SCE_C_COMMENT \|\|
	63	style == SCE_C_COMMENTDOC \|\|
	64	style == SCE_C_COMMENTDOCKEYWORD \|\|
	65	style == SCE_C_COMMENTDOCKEYWORDERROR;
	66	}
	67
	68	static void ColourTo(Accessor &styler, unsigned int end, unsigned int attr, bool bInAsm) {
	69	if ((bInAsm) && (attr == SCE_C_OPERATOR \|\| attr == SCE_C_NUMBER \|\| attr == SCE_C_DEFAULT \|\| attr == SCE_C_WORD \|\| attr == SCE_C_IDENTIFIER)) {
	70	styler.ColourTo(end, SCE_C_REGEX);
	71	} else
	72	styler.ColourTo(end, attr);
	73	}
	74
	75	// returns 1 if the item starts a class definition, and -1 if the word is "end", and 2 if the word is "asm"
	76	static int classifyWordTAL(unsigned int start, unsigned int end, /WordList &keywords/WordList *keywordlists[], Accessor &styler, bool bInAsm) {
	77	int ret = 0;
	78
	79	WordList& keywords = *keywordlists[0];
	80	WordList& builtins = *keywordlists[1];
	81	WordList& nonreserved_keywords = *keywordlists[2];
	82
	83	char s[100];
	84	getRange(start, end, styler, s, sizeof(s));
	85
	86	char chAttr = SCE_C_IDENTIFIER;
	87	if (isdigit(s[0]) \|\| (s[0] == '.')) {
	88	chAttr = SCE_C_NUMBER;
	89	}
	90	else {
	91	if (keywords.InList(s)) {
92	chAttr = SCE_C_WORD;
93
94	if (strcmp(s, "asm") == 0) {
95	ret = 2;
96	}
97	else if (strcmp(s, "end") == 0) {
98	ret = -1;
99	}
1dcf666d	100	}
9e96e16f RD	101	else if (s[0] == '$' \|\| builtins.InList(s)) {
	102	chAttr = SCE_C_WORD2;
	103	}
	104	else if (nonreserved_keywords.InList(s)) {
	105	chAttr = SCE_C_UUID;
	106	}
	107	}
	108	ColourTo(styler, end, chAttr, (bInAsm && ret != -1));
	109	return ret;
	110	}
	111
	112	static int classifyFoldPointTAL(const char* s) {
	113	int lev = 0;
	114	if (!(isdigit(s[0]) \|\| (s[0] == '.'))) {
	115	if (strcmp(s, "begin") == 0 \|\|
	116	strcmp(s, "block") == 0) {
	117	lev=1;
	118	} else if (strcmp(s, "end") == 0) {
	119	lev=-1;
	120	}
	121	}
	122	return lev;
	123	}
	124
	125	static void ColouriseTALDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
	126	Accessor &styler) {
	127
	128	styler.StartAt(startPos);
	129
	130	int state = initStyle;
	131	if (state == SCE_C_CHARACTER) // Does not leak onto next line
	132	state = SCE_C_DEFAULT;
	133	char chPrev = ' ';
	134	char chNext = styler[startPos];
	135	unsigned int lengthDoc = startPos + length;
	136
	137	bool bInClassDefinition;
	138
	139	int currentLine = styler.GetLine(startPos);
	140	if (currentLine > 0) {
	141	styler.SetLineState(currentLine, styler.GetLineState(currentLine-1));
	142	bInClassDefinition = (styler.GetLineState(currentLine) == 1);
	143	} else {
	144	styler.SetLineState(currentLine, 0);
	145	bInClassDefinition = false;
	146	}
	147
	148	bool bInAsm = (state == SCE_C_REGEX);
	149	if (bInAsm)
	150	state = SCE_C_DEFAULT;
	151
	152	styler.StartSegment(startPos);
	153	int visibleChars = 0;
	154	for (unsigned int i = startPos; i < lengthDoc; i++) {
	155	char ch = chNext;
	156
	157	chNext = styler.SafeGetCharAt(i + 1);
	158
	159	if ((ch == '\r' && chNext != '\n') \|\| (ch == '\n')) {
	160	// Trigger on CR only (Mac style) or either on LF from CR+LF (Dos/Win) or on LF alone (Unix)
	161	// Avoid triggering two times on Dos/Win
	162	// End of line
	163	if (state == SCE_C_CHARACTER) {
	164	ColourTo(styler, i, state, bInAsm);
165	state = SCE_C_DEFAULT;
166	}
167	visibleChars = 0;
168	currentLine++;
169	styler.SetLineState(currentLine, (bInClassDefinition ? 1 : 0));
170	}
171
172	if (styler.IsLeadByte(ch)) {
173	chNext = styler.SafeGetCharAt(i + 2);
174	chPrev = ' ';
175	i += 1;
176	continue;
177	}
178
179	if (state == SCE_C_DEFAULT) {
180	if (isTALwordstart(ch)) {
181	ColourTo(styler, i-1, state, bInAsm);
182	state = SCE_C_IDENTIFIER;
183	} else if (ch == '!' && chNext != '*') {
184	ColourTo(styler, i-1, state, bInAsm);
185	state = SCE_C_COMMENT;
186	} else if (ch == '!' && chNext == '*') {
187	ColourTo(styler, i-1, state, bInAsm);
188	state = SCE_C_COMMENTDOC;
189	} else if (ch == '-' && chNext == '-') {
190	ColourTo(styler, i-1, state, bInAsm);
191	state = SCE_C_COMMENTLINE;
192	} else if (ch == '"') {
193	ColourTo(styler, i-1, state, bInAsm);
194	state = SCE_C_STRING;
195	} else if (ch == '?' && visibleChars == 0) {
196	ColourTo(styler, i-1, state, bInAsm);
197	state = SCE_C_PREPROCESSOR;
198	} else if (isTALoperator(ch)) {
199	ColourTo(styler, i-1, state, bInAsm);
200	ColourTo(styler, i, SCE_C_OPERATOR, bInAsm);
201	}
202	} else if (state == SCE_C_IDENTIFIER) {
203	if (!isTALwordchar(ch)) {
204	int lStateChange = classifyWordTAL(styler.GetStartSegment(), i - 1, keywordlists, styler, bInAsm);
205
206	if(lStateChange == 1) {
207	styler.SetLineState(currentLine, 1);
208	bInClassDefinition = true;
209	} else if(lStateChange == 2) {
210	bInAsm = true;
211	} else if(lStateChange == -1) {
212	styler.SetLineState(currentLine, 0);
213	bInClassDefinition = false;
214	bInAsm = false;
215	}
216
217	state = SCE_C_DEFAULT;
218	chNext = styler.SafeGetCharAt(i + 1);
219	if (ch == '!' && chNext != '*') {
220	state = SCE_C_COMMENT;
221	} else if (ch == '!' && chNext == '*') {
222	ColourTo(styler, i-1, state, bInAsm);
223	state = SCE_C_COMMENTDOC;
224	} else if (ch == '-' && chNext == '-') {
225	state = SCE_C_COMMENTLINE;
226	} else if (ch == '"') {
227	state = SCE_C_STRING;
228	} else if (isTALoperator(ch)) {
229	ColourTo(styler, i, SCE_C_OPERATOR, bInAsm);
230	}
231	}
232	} else {
233	if (state == SCE_C_PREPROCESSOR) {
234	if ((ch == '\r' \|\| ch == '\n') && !(chPrev == '\\' \|\| chPrev == '\r')) {
235	ColourTo(styler, i-1, state, bInAsm);
236	state = SCE_C_DEFAULT;
237	}
238	} else if (state == SCE_C_COMMENT) {
239	if (ch == '!' \|\| (ch == '\r' \|\| ch == '\n') ) {
240	ColourTo(styler, i, state, bInAsm);
241	state = SCE_C_DEFAULT;
242	}
243	} else if (state == SCE_C_COMMENTDOC) {
244	if (ch == '!' \|\| (ch == '\r' \|\| ch == '\n')) {
245	if (((i > styler.GetStartSegment() + 2) \|\| (
246	(initStyle == SCE_C_COMMENTDOC) &&
247	(styler.GetStartSegment() == static_cast<unsigned int>(startPos))))) {
248	ColourTo(styler, i, state, bInAsm);
249	state = SCE_C_DEFAULT;
250	}
251	}
252	} else if (state == SCE_C_COMMENTLINE) {
253	if (ch == '\r' \|\| ch == '\n') {
254	ColourTo(styler, i-1, state, bInAsm);
255	state = SCE_C_DEFAULT;
256	}
257	} else if (state == SCE_C_STRING) {
258	if (ch == '"') {
259	ColourTo(styler, i, state, bInAsm);
260	state = SCE_C_DEFAULT;
261	}
262	}
263	}
264	if (!isspacechar(ch))
265	visibleChars++;
266	chPrev = ch;
267	}
268	ColourTo(styler, lengthDoc - 1, state, bInAsm);
269	}
270
271	static void FoldTALDoc(unsigned int startPos, int length, int initStyle, WordList *[],
272	Accessor &styler) {
273	bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
274	bool foldPreprocessor = styler.GetPropertyInt("fold.preprocessor") != 0;
275	bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
276	unsigned int endPos = startPos + length;
277	int visibleChars = 0;
278	int lineCurrent = styler.GetLine(startPos);
279	int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
280	int levelCurrent = levelPrev;
281	char chNext = styler[startPos];
282	int styleNext = styler.StyleAt(startPos);
283	int style = initStyle;
284	bool was_end = false;
285	bool section = false;
286
287	int lastStart = 0;
288
289	for (unsigned int i = startPos; i < endPos; i++) {
290	char ch = chNext;
291	chNext = styler.SafeGetCharAt(i + 1);
292	int stylePrev = style;
293	style = styleNext;
294	styleNext = styler.StyleAt(i + 1);
295	bool atEOL = (ch == '\r' && chNext != '\n') \|\| (ch == '\n');
296
297	if (stylePrev == SCE_C_DEFAULT && (style == SCE_C_WORD \|\| style == SCE_C_UUID \|\| style == SCE_C_PREPROCESSOR))
298	{
299	// Store last word start point.
300	lastStart = i;
301	}
302
303	if (stylePrev == SCE_C_WORD \|\| style == SCE_C_UUID \|\| stylePrev == SCE_C_PREPROCESSOR) {
304	if(isTALwordchar(ch) && !isTALwordchar(chNext)) {
305	char s[100];
306	getRange(lastStart, i, styler, s, sizeof(s));
307	if (stylePrev == SCE_C_PREPROCESSOR && strcmp(s, "?section") == 0)
308	{
309	section = true;
310	levelCurrent = 1;
311	levelPrev = 0;
312	}
313	else if (stylePrev == SCE_C_WORD \|\| stylePrev == SCE_C_UUID)
314	{
315	if (strcmp(s, "block") == 0)
316	{
317	// block keyword is ignored immediately after end keyword
318	if (!was_end)
319	levelCurrent++;
320	}
321	else
322	levelCurrent += classifyFoldPointTAL(s);
323	if (strcmp(s, "end") == 0)
324	{
325	was_end = true;
326	}
327	else
328	{
329	was_end = false;
330	}
331	}
332	}
333	}
334
335	if (foldComment && (style == SCE_C_COMMENTLINE)) {
336	if ((ch == '/') && (chNext == '/')) {
337	char chNext2 = styler.SafeGetCharAt(i + 2);
338	if (chNext2 == '{') {
339	levelCurrent++;
340	} else if (chNext2 == '}') {
341	levelCurrent--;
342	}
343	}
344	}
345
346	if (foldPreprocessor && (style == SCE_C_PREPROCESSOR)) {
347	if (ch == '{' && chNext == '$') {
348	unsigned int j=i+2; // skip {$
349	while ((j<endPos) && IsASpaceOrTab(styler.SafeGetCharAt(j))) {
350	j++;
351	}
352	if (styler.Match(j, "region") \|\| styler.Match(j, "if")) {
353	levelCurrent++;
354	} else if (styler.Match(j, "end")) {
355	levelCurrent--;
356	}
357	}
358	}
359
360	if (foldComment && IsStreamCommentStyle(style)) {
361	if (!IsStreamCommentStyle(stylePrev)) {
362	levelCurrent++;
363	} else if (!IsStreamCommentStyle(styleNext) && !atEOL) {
364	// Comments don't end at end of line and the next character may be unstyled.
365	levelCurrent--;
366	}
367	}
368
369	if (atEOL) {
370	int lev = levelPrev \| SC_FOLDLEVELBASE;
371	if (visibleChars == 0 && foldCompact)
372	lev \|= SC_FOLDLEVELWHITEFLAG;
373	if ((levelCurrent > levelPrev \|\| section) && (visibleChars > 0))
374	lev \|= SC_FOLDLEVELHEADERFLAG;
375	if (lev != styler.LevelAt(lineCurrent)) {
376	styler.SetLevel(lineCurrent, lev);
377	}
378	lineCurrent++;
379	levelPrev = levelCurrent;
380	visibleChars = 0;
381	section = false;
382	}
383
384	if (!isspacechar(ch))
385	visibleChars++;
386	}
387
388	// Fill in the real level of the next line, keeping the current flags as they will be filled in later
389	int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
390	styler.SetLevel(lineCurrent, levelPrev \| flagsNext);
391	}
392
393	static const char * const TALWordListDesc[] = {
394	"Keywords",
395	"Builtins",
396	0
397	};
398
399	LexerModule lmTAL(SCLEX_TAL, ColouriseTALDoc, "TAL", FoldTALDoc, TALWordListDesc);