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

// Scintilla source code edit control
/** @file LexPOV.cxx
 ** Lexer for POV-Ray SDL (Persistance of Vision Raytracer, Scene Description Language).
 ** Written by Philippe Lhoste but this is mostly a derivative of LexCPP...
 **/
// Copyright 1998-2005 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.

// Some points that distinguish from a simple C lexer:
// Identifiers start only by a character.
// No line continuation character.
// Strings are limited to 256 characters.
// Directives are similar to preprocessor commands,
// but we match directive keywords and colorize incorrect ones.
// Block comments can be nested (code stolen from my code in LexLua).

#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(int ch) {
	return ch < 0x80 && (isalnum(ch) || ch == '_');
}

static inline bool IsAWordStart(int ch) {
	return ch < 0x80 && isalpha(ch);
}

static inline bool IsANumberChar(int ch) {
	// Not exactly following number definition (several dots are seen as OK, etc.)
	// but probably enough in most cases.
	return (ch < 0x80) &&
	        (isdigit(ch) || toupper(ch) == 'E' ||
             ch == '.' || ch == '-' || ch == '+');
}

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

	WordList &keywords1 = *keywordlists[0];
	WordList &keywords2 = *keywordlists[1];
	WordList &keywords3 = *keywordlists[2];
	WordList &keywords4 = *keywordlists[3];
	WordList &keywords5 = *keywordlists[4];
	WordList &keywords6 = *keywordlists[5];
	WordList &keywords7 = *keywordlists[6];
	WordList &keywords8 = *keywordlists[7];

	int currentLine = styler.GetLine(startPos);
	// Initialize the block comment /* */ nesting level, if we are inside such a comment.
	int blockCommentLevel = 0;
	if (initStyle == SCE_POV_COMMENT) {
		blockCommentLevel = styler.GetLineState(currentLine - 1);
	}

	// Do not leak onto next line
	if (initStyle == SCE_POV_STRINGEOL || initStyle == SCE_POV_COMMENTLINE) {
		initStyle = SCE_POV_DEFAULT;
	}

	short stringLen = 0;

	StyleContext sc(startPos, length, initStyle, styler);

	for (; sc.More(); sc.Forward()) {
		if (sc.atLineEnd) {
			// Update the line state, so it can be seen by next line
			currentLine = styler.GetLine(sc.currentPos);
			if (sc.state == SCE_POV_COMMENT) {
				// Inside a block comment, we set the line state
				styler.SetLineState(currentLine, blockCommentLevel);
			} else {
				// Reset the line state
				styler.SetLineState(currentLine, 0);
			}
		}

		if (sc.atLineStart && (sc.state == SCE_POV_STRING)) {
			// Prevent SCE_POV_STRINGEOL from leaking back to previous line
			sc.SetState(SCE_POV_STRING);
		}

		// Determine if the current state should terminate.
		if (sc.state == SCE_POV_OPERATOR) {
			sc.SetState(SCE_POV_DEFAULT);
		} else if (sc.state == SCE_POV_NUMBER) {
			// We stop the number definition on non-numerical non-dot non-eE non-sign char
			if (!IsANumberChar(sc.ch)) {
				sc.SetState(SCE_POV_DEFAULT);
			}
		} else if (sc.state == SCE_POV_IDENTIFIER) {
			if (!IsAWordChar(sc.ch)) {
				char s[100];
				sc.GetCurrent(s, sizeof(s));
				if (keywords2.InList(s)) {
					sc.ChangeState(SCE_POV_WORD2);
				} else if (keywords3.InList(s)) {
					sc.ChangeState(SCE_POV_WORD3);
				} else if (keywords4.InList(s)) {
					sc.ChangeState(SCE_POV_WORD4);
				} else if (keywords5.InList(s)) {
					sc.ChangeState(SCE_POV_WORD5);
				} else if (keywords6.InList(s)) {
					sc.ChangeState(SCE_POV_WORD6);
				} else if (keywords7.InList(s)) {
					sc.ChangeState(SCE_POV_WORD7);
				} else if (keywords8.InList(s)) {
					sc.ChangeState(SCE_POV_WORD8);
				}
				sc.SetState(SCE_POV_DEFAULT);
			}
		} else if (sc.state == SCE_POV_DIRECTIVE) {
			if (!IsAWordChar(sc.ch)) {
				char s[100];
				char *p;
				sc.GetCurrent(s, sizeof(s));
				p = s;
				// Skip # and whitespace between # and directive word
				do {
					p++;
				} while ((*p == ' ' || *p == '\t') && *p != '\0');
				if (!keywords1.InList(p)) {
					sc.ChangeState(SCE_POV_BADDIRECTIVE);
				}
				sc.SetState(SCE_POV_DEFAULT);
			}
		} else if (sc.state == SCE_POV_COMMENT) {
			if (sc.Match('/', '*')) {
				blockCommentLevel++;
				sc.Forward();
			} else if (sc.Match('*', '/') && blockCommentLevel > 0) {
				blockCommentLevel--;
				sc.Forward();
				if (blockCommentLevel == 0) {
					sc.ForwardSetState(SCE_POV_DEFAULT);
				}
			}
		} else if (sc.state == SCE_POV_COMMENTLINE) {
			if (sc.atLineEnd) {
				sc.ForwardSetState(SCE_POV_DEFAULT);
			}
		} else if (sc.state == SCE_POV_STRING) {
			if (sc.ch == '\\') {
				stringLen++;
				if (strchr("abfnrtuv0'\"", sc.chNext)) {
					// Compound characters are counted as one.
					// Note: for Unicode chars \u, we shouldn't count the next 4 digits...
					sc.Forward();
				}
			} else if (sc.ch == '\"') {
				sc.ForwardSetState(SCE_POV_DEFAULT);
			} else if (sc.atLineEnd) {
				sc.ChangeState(SCE_POV_STRINGEOL);
				sc.ForwardSetState(SCE_POV_DEFAULT);
			} else {
				stringLen++;
			}
			if (stringLen > 256) {
				// Strings are limited to 256 chars
				sc.SetState(SCE_POV_STRINGEOL);
			}
		} else if (sc.state == SCE_POV_STRINGEOL) {
			if (sc.ch == '\\') {
				if (sc.chNext == '\"' || sc.chNext == '\\') {
					sc.Forward();
				}
			} else if (sc.ch == '\"') {
				sc.ForwardSetState(SCE_C_DEFAULT);
			} else if (sc.atLineEnd) {
				sc.ForwardSetState(SCE_POV_DEFAULT);
			}
		}

		// Determine if a new state should be entered.
		if (sc.state == SCE_POV_DEFAULT) {
			if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
				sc.SetState(SCE_POV_NUMBER);
			} else if (IsAWordStart(sc.ch)) {
				sc.SetState(SCE_POV_IDENTIFIER);
			} else if (sc.Match('/', '*')) {
				blockCommentLevel = 1;
				sc.SetState(SCE_POV_COMMENT);
				sc.Forward();	// Eat the * so it isn't used for the end of the comment
			} else if (sc.Match('/', '/')) {
				sc.SetState(SCE_POV_COMMENTLINE);
			} else if (sc.ch == '\"') {
				sc.SetState(SCE_POV_STRING);
				stringLen = 0;
			} else if (sc.ch == '#') {
				sc.SetState(SCE_POV_DIRECTIVE);
				// Skip whitespace between # and directive word
				do {
					sc.Forward();
				} while ((sc.ch == ' ' || sc.ch == '\t') && sc.More());
				if (sc.atLineEnd) {
					sc.SetState(SCE_POV_DEFAULT);
				}
			} else if (isoperator(static_cast<char>(sc.ch))) {
				sc.SetState(SCE_POV_OPERATOR);
			}
		}
	}
	sc.Complete();
}

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

	bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
	bool foldDirective = styler.GetPropertyInt("fold.directive") != 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;
	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 (foldComment && (style == SCE_POV_COMMENT)) {
			if (stylePrev != SCE_POV_COMMENT) {
				levelCurrent++;
			} else if ((styleNext != SCE_POV_COMMENT) && !atEOL) {
				// Comments don't end at end of line and the next character may be unstyled.
				levelCurrent--;
			}
		}
		if (foldComment && (style == SCE_POV_COMMENTLINE)) {
			if ((ch == '/') && (chNext == '/')) {
				char chNext2 = styler.SafeGetCharAt(i + 2);
				if (chNext2 == '{') {
					levelCurrent++;
				} else if (chNext2 == '}') {
					levelCurrent--;
				}
			}
		}
		if (foldDirective && (style == SCE_POV_DIRECTIVE)) {
			if (ch == '#') {
				unsigned int j=i+1;
				while ((j<endPos) && IsASpaceOrTab(styler.SafeGetCharAt(j))) {
					j++;
				}
			}
		}
		if (style == SCE_POV_OPERATOR) {
			if (ch == '{') {
				levelCurrent++;
			} else if (ch == '}') {
				levelCurrent--;
			}
		}
		if (atEOL) {
			int lev = levelPrev;
			if (visibleChars == 0 && foldCompact)
				lev |= SC_FOLDLEVELWHITEFLAG;
			if ((levelCurrent > levelPrev) && (visibleChars > 0))
				lev |= SC_FOLDLEVELHEADERFLAG;
			if (lev != styler.LevelAt(lineCurrent)) {
				styler.SetLevel(lineCurrent, lev);
			}
			lineCurrent++;
			levelPrev = levelCurrent;
			visibleChars = 0;
		}
		if (!isspacechar(ch))
			visibleChars++;
	}
	// Fill in the real level of the next line, keeping the current flags as they will be filled in later
	int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
	styler.SetLevel(lineCurrent, levelPrev | flagsNext);
}

static const char * const povWordLists[] = {
	"Language directives",
	"Objects & CSG & Appearance",
	"Types & Modifiers & Items",
	"Predefined Identifiers",
	"Predefined Functions",
	"User defined 1",
	"User defined 2",
	"User defined 3",
	0,
};

LexerModule lmPOV(SCLEX_POV, ColourisePovDoc, "pov", FoldPovDoc, povWordLists);
Commit	Line	Data
9e730a78 RD	1	// Scintilla source code edit control
9e730a78 RD	2	/** @file LexPOV.cxx
88a8b04e RD	3	** Lexer for POV-Ray SDL (Persistance of Vision Raytracer, Scene Description Language).
88a8b04e RD	4	** Written by Philippe Lhoste but this is mostly a derivative of LexCPP...
9e730a78	5	**/
1e9bafca	6	// Copyright 1998-2005 by Neil Hodgson <neilh@scintilla.org>
9e730a78 RD	7	// The License.txt file describes the conditions under which this software may be distributed.
9e730a78 RD	8
88a8b04e RD	9	// Some points that distinguish from a simple C lexer:
	10	// Identifiers start only by a character.
	11	// No line continuation character.
	12	// Strings are limited to 256 characters.
	13	// Directives are similar to preprocessor commands,
	14	// but we match directive keywords and colorize incorrect ones.
	15	// Block comments can be nested (code stolen from my code in LexLua).
	16
9e730a78 RD	17	#include <stdlib.h>
	18	#include <string.h>
	19	#include <ctype.h>
	20	#include <stdio.h>
	21	#include <stdarg.h>
	22
	23	#include "Platform.h"
	24
	25	#include "PropSet.h"
	26	#include "Accessor.h"
	27	#include "StyleContext.h"
	28	#include "KeyWords.h"
	29	#include "Scintilla.h"
	30	#include "SciLexer.h"
	31
1e9bafca	32	static inline bool IsAWordChar(int ch) {
88a8b04e	33	return ch < 0x80 && (isalnum(ch) \|\| ch == '_');
9e730a78 RD	34	}
9e730a78 RD	35
1e9bafca	36	static inline bool IsAWordStart(int ch) {
88a8b04e	37	return ch < 0x80 && isalpha(ch);
9e730a78 RD	38	}
9e730a78 RD	39
1e9bafca	40	static inline bool IsANumberChar(int ch) {
8e54aaed RD	41	// Not exactly following number definition (several dots are seen as OK, etc.)
	42	// but probably enough in most cases.
	43	return (ch < 0x80) &&
	44	(isdigit(ch) \|\| toupper(ch) == 'E' \|\|
	45	ch == '.' \|\| ch == '-' \|\| ch == '+');
	46	}
	47
88a8b04e RD	48	static void ColourisePovDoc(
	49	unsigned int startPos,
	50	int length,
	51	int initStyle,
	52	WordList *keywordlists[],
	53	Accessor &styler) {
9e730a78	54
88a8b04e	55	WordList &keywords1 = *keywordlists[0];
9e730a78	56	WordList &keywords2 = *keywordlists[1];
88a8b04e RD	57	WordList &keywords3 = *keywordlists[2];
	58	WordList &keywords4 = *keywordlists[3];
	59	WordList &keywords5 = *keywordlists[4];
	60	WordList &keywords6 = *keywordlists[5];
	61	WordList &keywords7 = *keywordlists[6];
	62	WordList &keywords8 = *keywordlists[7];
	63
	64	int currentLine = styler.GetLine(startPos);
	65	// Initialize the block comment /* */ nesting level, if we are inside such a comment.
	66	int blockCommentLevel = 0;
	67	if (initStyle == SCE_POV_COMMENT) {
	68	blockCommentLevel = styler.GetLineState(currentLine - 1);
	69	}
9e730a78 RD	70
9e730a78 RD	71	// Do not leak onto next line
1e9bafca	72	if (initStyle == SCE_POV_STRINGEOL \|\| initStyle == SCE_POV_COMMENTLINE) {
88a8b04e RD	73	initStyle = SCE_POV_DEFAULT;
88a8b04e RD	74	}
9e730a78	75
88a8b04e	76	short stringLen = 0;
9e730a78	77
1e9bafca RD	78	StyleContext sc(startPos, length, initStyle, styler);
1e9bafca RD	79
9e730a78	80	for (; sc.More(); sc.Forward()) {
88a8b04e RD	81	if (sc.atLineEnd) {
	82	// Update the line state, so it can be seen by next line
	83	currentLine = styler.GetLine(sc.currentPos);
	84	if (sc.state == SCE_POV_COMMENT) {
	85	// Inside a block comment, we set the line state
	86	styler.SetLineState(currentLine, blockCommentLevel);
	87	} else {
	88	// Reset the line state
	89	styler.SetLineState(currentLine, 0);
	90	}
	91	}
9e730a78	92
88a8b04e	93	if (sc.atLineStart && (sc.state == SCE_POV_STRING)) {
9e730a78 RD	94	// Prevent SCE_POV_STRINGEOL from leaking back to previous line
9e730a78 RD	95	sc.SetState(SCE_POV_STRING);
9e730a78 RD	96	}
	97
	98	// Determine if the current state should terminate.
88a8b04e	99	if (sc.state == SCE_POV_OPERATOR) {
9e730a78 RD	100	sc.SetState(SCE_POV_DEFAULT);
9e730a78 RD	101	} else if (sc.state == SCE_POV_NUMBER) {
88a8b04e	102	// We stop the number definition on non-numerical non-dot non-eE non-sign char
8e54aaed RD	103	if (!IsANumberChar(sc.ch)) {
8e54aaed RD	104	sc.SetState(SCE_POV_DEFAULT);
9e730a78 RD	105	}
9e730a78 RD	106	} else if (sc.state == SCE_POV_IDENTIFIER) {
88a8b04e	107	if (!IsAWordChar(sc.ch)) {
9e730a78	108	char s[100];
88a8b04e RD	109	sc.GetCurrent(s, sizeof(s));
88a8b04e RD	110	if (keywords2.InList(s)) {
9e730a78	111	sc.ChangeState(SCE_POV_WORD2);
88a8b04e RD	112	} else if (keywords3.InList(s)) {
	113	sc.ChangeState(SCE_POV_WORD3);
	114	} else if (keywords4.InList(s)) {
	115	sc.ChangeState(SCE_POV_WORD4);
	116	} else if (keywords5.InList(s)) {
	117	sc.ChangeState(SCE_POV_WORD5);
	118	} else if (keywords6.InList(s)) {
	119	sc.ChangeState(SCE_POV_WORD6);
	120	} else if (keywords7.InList(s)) {
	121	sc.ChangeState(SCE_POV_WORD7);
	122	} else if (keywords8.InList(s)) {
	123	sc.ChangeState(SCE_POV_WORD8);
	124	}
	125	sc.SetState(SCE_POV_DEFAULT);
	126	}
	127	} else if (sc.state == SCE_POV_DIRECTIVE) {
	128	if (!IsAWordChar(sc.ch)) {
1e9bafca RD	129	char s[100];
1e9bafca RD	130	char *p;
88a8b04e RD	131	sc.GetCurrent(s, sizeof(s));
	132	p = s;
	133	// Skip # and whitespace between # and directive word
	134	do {
	135	p++;
	136	} while ((p == ' ' \|\| p == '\t') && *p != '\0');
	137	if (!keywords1.InList(p)) {
	138	sc.ChangeState(SCE_POV_BADDIRECTIVE);
9e730a78 RD	139	}
	140	sc.SetState(SCE_POV_DEFAULT);
	141	}
	142	} else if (sc.state == SCE_POV_COMMENT) {
88a8b04e RD	143	if (sc.Match('/', '*')) {
88a8b04e RD	144	blockCommentLevel++;
9e730a78	145	sc.Forward();
88a8b04e RD	146	} else if (sc.Match('*', '/') && blockCommentLevel > 0) {
88a8b04e RD	147	blockCommentLevel--;
9e730a78	148	sc.Forward();
88a8b04e RD	149	if (blockCommentLevel == 0) {
	150	sc.ForwardSetState(SCE_POV_DEFAULT);
	151	}
9e730a78 RD	152	}
	153	} else if (sc.state == SCE_POV_COMMENTLINE) {
	154	if (sc.atLineEnd) {
1e9bafca	155	sc.ForwardSetState(SCE_POV_DEFAULT);
9e730a78 RD	156	}
9e730a78 RD	157	} else if (sc.state == SCE_POV_STRING) {
88a8b04e RD	158	if (sc.ch == '\\') {
	159	stringLen++;
	160	if (strchr("abfnrtuv0'\"", sc.chNext)) {
	161	// Compound characters are counted as one.
	162	// Note: for Unicode chars \u, we shouldn't count the next 4 digits...
	163	sc.Forward();
	164	}
	165	} else if (sc.ch == '\"') {
	166	sc.ForwardSetState(SCE_POV_DEFAULT);
	167	} else if (sc.atLineEnd) {
	168	sc.ChangeState(SCE_POV_STRINGEOL);
	169	sc.ForwardSetState(SCE_POV_DEFAULT);
	170	} else {
	171	stringLen++;
	172	}
	173	if (stringLen > 256) {
	174	// Strings are limited to 256 chars
	175	sc.SetState(SCE_POV_STRINGEOL);
	176	}
	177	} else if (sc.state == SCE_POV_STRINGEOL) {
9e730a78 RD	178	if (sc.ch == '\\') {
	179	if (sc.chNext == '\"' \|\| sc.chNext == '\\') {
	180	sc.Forward();
	181	}
	182	} else if (sc.ch == '\"') {
88a8b04e RD	183	sc.ForwardSetState(SCE_C_DEFAULT);
88a8b04e RD	184	} else if (sc.atLineEnd) {
9e730a78 RD	185	sc.ForwardSetState(SCE_POV_DEFAULT);
	186	}
	187	}
	188
	189	// Determine if a new state should be entered.
	190	if (sc.state == SCE_POV_DEFAULT) {
	191	if (IsADigit(sc.ch) \|\| (sc.ch == '.' && IsADigit(sc.chNext))) {
	192	sc.SetState(SCE_POV_NUMBER);
88a8b04e	193	} else if (IsAWordStart(sc.ch)) {
9e730a78 RD	194	sc.SetState(SCE_POV_IDENTIFIER);
9e730a78 RD	195	} else if (sc.Match('/', '*')) {
88a8b04e	196	blockCommentLevel = 1;
9e730a78 RD	197	sc.SetState(SCE_POV_COMMENT);
	198	sc.Forward(); // Eat the * so it isn't used for the end of the comment
	199	} else if (sc.Match('/', '/')) {
	200	sc.SetState(SCE_POV_COMMENTLINE);
	201	} else if (sc.ch == '\"') {
	202	sc.SetState(SCE_POV_STRING);
88a8b04e RD	203	stringLen = 0;
	204	} else if (sc.ch == '#') {
	205	sc.SetState(SCE_POV_DIRECTIVE);
	206	// Skip whitespace between # and directive word
	207	do {
	208	sc.Forward();
	209	} while ((sc.ch == ' ' \|\| sc.ch == '\t') && sc.More());
	210	if (sc.atLineEnd) {
	211	sc.SetState(SCE_POV_DEFAULT);
	212	}
	213	} else if (isoperator(static_cast<char>(sc.ch))) {
9e730a78	214	sc.SetState(SCE_POV_OPERATOR);
9e730a78 RD	215	}
9e730a78 RD	216	}
9e730a78 RD	217	}
	218	sc.Complete();
	219	}
	220
88a8b04e RD	221	static void FoldPovDoc(
	222	unsigned int startPos,
	223	int length,
	224	int initStyle,
	225	WordList *[],
	226	Accessor &styler) {
9e730a78	227
88a8b04e RD	228	bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
88a8b04e RD	229	bool foldDirective = styler.GetPropertyInt("fold.directive") != 0;
9e730a78 RD	230	bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
	231	unsigned int endPos = startPos + length;
	232	int visibleChars = 0;
	233	int lineCurrent = styler.GetLine(startPos);
	234	int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
	235	int levelCurrent = levelPrev;
	236	char chNext = styler[startPos];
	237	int styleNext = styler.StyleAt(startPos);
	238	int style = initStyle;
	239	for (unsigned int i = startPos; i < endPos; i++) {
	240	char ch = chNext;
	241	chNext = styler.SafeGetCharAt(i + 1);
	242	int stylePrev = style;
	243	style = styleNext;
	244	styleNext = styler.StyleAt(i + 1);
	245	bool atEOL = (ch == '\r' && chNext != '\n') \|\| (ch == '\n');
88a8b04e RD	246	if (foldComment && (style == SCE_POV_COMMENT)) {
88a8b04e RD	247	if (stylePrev != SCE_POV_COMMENT) {
9e730a78	248	levelCurrent++;
88a8b04e	249	} else if ((styleNext != SCE_POV_COMMENT) && !atEOL) {
9e730a78 RD	250	// Comments don't end at end of line and the next character may be unstyled.
	251	levelCurrent--;
	252	}
	253	}
88a8b04e RD	254	if (foldComment && (style == SCE_POV_COMMENTLINE)) {
	255	if ((ch == '/') && (chNext == '/')) {
	256	char chNext2 = styler.SafeGetCharAt(i + 2);
	257	if (chNext2 == '{') {
	258	levelCurrent++;
	259	} else if (chNext2 == '}') {
	260	levelCurrent--;
	261	}
	262	}
	263	}
	264	if (foldDirective && (style == SCE_POV_DIRECTIVE)) {
	265	if (ch == '#') {
	266	unsigned int j=i+1;
	267	while ((j<endPos) && IsASpaceOrTab(styler.SafeGetCharAt(j))) {
	268	j++;
	269	}
	270	}
	271	}
	272	if (style == SCE_POV_OPERATOR) {
9e730a78 RD	273	if (ch == '{') {
	274	levelCurrent++;
	275	} else if (ch == '}') {
	276	levelCurrent--;
	277	}
	278	}
	279	if (atEOL) {
	280	int lev = levelPrev;
	281	if (visibleChars == 0 && foldCompact)
	282	lev \|= SC_FOLDLEVELWHITEFLAG;
	283	if ((levelCurrent > levelPrev) && (visibleChars > 0))
	284	lev \|= SC_FOLDLEVELHEADERFLAG;
	285	if (lev != styler.LevelAt(lineCurrent)) {
	286	styler.SetLevel(lineCurrent, lev);
	287	}
	288	lineCurrent++;
	289	levelPrev = levelCurrent;
	290	visibleChars = 0;
	291	}
	292	if (!isspacechar(ch))
	293	visibleChars++;
	294	}
	295	// Fill in the real level of the next line, keeping the current flags as they will be filled in later
	296	int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
	297	styler.SetLevel(lineCurrent, levelPrev \| flagsNext);
	298	}
	299
88a8b04e RD	300	static const char * const povWordLists[] = {
	301	"Language directives",
	302	"Objects & CSG & Appearance",
	303	"Types & Modifiers & Items",
	304	"Predefined Identifiers",
	305	"Predefined Functions",
	306	"User defined 1",
	307	"User defined 2",
	308	"User defined 3",
	309	0,
	310	};
9e730a78	311
88a8b04e	312	LexerModule lmPOV(SCLEX_POV, ColourisePovDoc, "pov", FoldPovDoc, povWordLists);