[wxWidgets.git] / src / stc / scintilla / lexers / 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 <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(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>
9e730a78 RD	18	#include <string.h>
9e730a78 RD	19	#include <stdio.h>
9e730a78 RD	20	#include <stdarg.h>
1dcf666d RD	21	#include <assert.h>
1dcf666d RD	22	#include <ctype.h>
9e730a78	23
1dcf666d RD	24	#include "ILexer.h"
	25	#include "Scintilla.h"
	26	#include "SciLexer.h"
9e730a78	27
1dcf666d RD	28	#include "WordList.h"
1dcf666d RD	29	#include "LexAccessor.h"
9e730a78 RD	30	#include "Accessor.h"
9e730a78 RD	31	#include "StyleContext.h"
1dcf666d RD	32	#include "CharacterSet.h"
1dcf666d RD	33	#include "LexerModule.h"
9e730a78	34
7e0c58e9 RD	35	#ifdef SCI_NAMESPACE
	36	using namespace Scintilla;
	37	#endif
	38
1e9bafca	39	static inline bool IsAWordChar(int ch) {
88a8b04e	40	return ch < 0x80 && (isalnum(ch) \|\| ch == '_');
9e730a78 RD	41	}
9e730a78 RD	42
1e9bafca	43	static inline bool IsAWordStart(int ch) {
88a8b04e	44	return ch < 0x80 && isalpha(ch);
9e730a78 RD	45	}
9e730a78 RD	46
1e9bafca	47	static inline bool IsANumberChar(int ch) {
8e54aaed RD	48	// Not exactly following number definition (several dots are seen as OK, etc.)
	49	// but probably enough in most cases.
	50	return (ch < 0x80) &&
	51	(isdigit(ch) \|\| toupper(ch) == 'E' \|\|
	52	ch == '.' \|\| ch == '-' \|\| ch == '+');
	53	}
	54
88a8b04e RD	55	static void ColourisePovDoc(
	56	unsigned int startPos,
	57	int length,
	58	int initStyle,
	59	WordList *keywordlists[],
	60	Accessor &styler) {
9e730a78	61
88a8b04e	62	WordList &keywords1 = *keywordlists[0];
9e730a78	63	WordList &keywords2 = *keywordlists[1];
88a8b04e RD	64	WordList &keywords3 = *keywordlists[2];
	65	WordList &keywords4 = *keywordlists[3];
	66	WordList &keywords5 = *keywordlists[4];
	67	WordList &keywords6 = *keywordlists[5];
	68	WordList &keywords7 = *keywordlists[6];
	69	WordList &keywords8 = *keywordlists[7];
	70
	71	int currentLine = styler.GetLine(startPos);
	72	// Initialize the block comment /* */ nesting level, if we are inside such a comment.
	73	int blockCommentLevel = 0;
	74	if (initStyle == SCE_POV_COMMENT) {
	75	blockCommentLevel = styler.GetLineState(currentLine - 1);
	76	}
9e730a78 RD	77
9e730a78 RD	78	// Do not leak onto next line
1e9bafca	79	if (initStyle == SCE_POV_STRINGEOL \|\| initStyle == SCE_POV_COMMENTLINE) {
88a8b04e RD	80	initStyle = SCE_POV_DEFAULT;
88a8b04e RD	81	}
9e730a78	82
88a8b04e	83	short stringLen = 0;
9e730a78	84
1e9bafca RD	85	StyleContext sc(startPos, length, initStyle, styler);
1e9bafca RD	86
9e730a78	87	for (; sc.More(); sc.Forward()) {
88a8b04e RD	88	if (sc.atLineEnd) {
	89	// Update the line state, so it can be seen by next line
	90	currentLine = styler.GetLine(sc.currentPos);
	91	if (sc.state == SCE_POV_COMMENT) {
	92	// Inside a block comment, we set the line state
	93	styler.SetLineState(currentLine, blockCommentLevel);
	94	} else {
	95	// Reset the line state
	96	styler.SetLineState(currentLine, 0);
	97	}
	98	}
9e730a78	99
88a8b04e	100	if (sc.atLineStart && (sc.state == SCE_POV_STRING)) {
9e730a78 RD	101	// Prevent SCE_POV_STRINGEOL from leaking back to previous line
9e730a78 RD	102	sc.SetState(SCE_POV_STRING);
9e730a78 RD	103	}
	104
	105	// Determine if the current state should terminate.
88a8b04e	106	if (sc.state == SCE_POV_OPERATOR) {
9e730a78 RD	107	sc.SetState(SCE_POV_DEFAULT);
9e730a78 RD	108	} else if (sc.state == SCE_POV_NUMBER) {
88a8b04e	109	// We stop the number definition on non-numerical non-dot non-eE non-sign char
8e54aaed RD	110	if (!IsANumberChar(sc.ch)) {
8e54aaed RD	111	sc.SetState(SCE_POV_DEFAULT);
9e730a78 RD	112	}
9e730a78 RD	113	} else if (sc.state == SCE_POV_IDENTIFIER) {
88a8b04e	114	if (!IsAWordChar(sc.ch)) {
9e730a78	115	char s[100];
88a8b04e RD	116	sc.GetCurrent(s, sizeof(s));
88a8b04e RD	117	if (keywords2.InList(s)) {
9e730a78	118	sc.ChangeState(SCE_POV_WORD2);
88a8b04e RD	119	} else if (keywords3.InList(s)) {
	120	sc.ChangeState(SCE_POV_WORD3);
	121	} else if (keywords4.InList(s)) {
	122	sc.ChangeState(SCE_POV_WORD4);
	123	} else if (keywords5.InList(s)) {
	124	sc.ChangeState(SCE_POV_WORD5);
	125	} else if (keywords6.InList(s)) {
	126	sc.ChangeState(SCE_POV_WORD6);
	127	} else if (keywords7.InList(s)) {
	128	sc.ChangeState(SCE_POV_WORD7);
	129	} else if (keywords8.InList(s)) {
	130	sc.ChangeState(SCE_POV_WORD8);
	131	}
	132	sc.SetState(SCE_POV_DEFAULT);
	133	}
	134	} else if (sc.state == SCE_POV_DIRECTIVE) {
	135	if (!IsAWordChar(sc.ch)) {
1e9bafca RD	136	char s[100];
1e9bafca RD	137	char *p;
88a8b04e RD	138	sc.GetCurrent(s, sizeof(s));
	139	p = s;
	140	// Skip # and whitespace between # and directive word
	141	do {
	142	p++;
	143	} while ((p == ' ' \|\| p == '\t') && *p != '\0');
	144	if (!keywords1.InList(p)) {
	145	sc.ChangeState(SCE_POV_BADDIRECTIVE);
9e730a78 RD	146	}
	147	sc.SetState(SCE_POV_DEFAULT);
	148	}
	149	} else if (sc.state == SCE_POV_COMMENT) {
88a8b04e RD	150	if (sc.Match('/', '*')) {
88a8b04e RD	151	blockCommentLevel++;
9e730a78	152	sc.Forward();
88a8b04e RD	153	} else if (sc.Match('*', '/') && blockCommentLevel > 0) {
88a8b04e RD	154	blockCommentLevel--;
9e730a78	155	sc.Forward();
88a8b04e RD	156	if (blockCommentLevel == 0) {
	157	sc.ForwardSetState(SCE_POV_DEFAULT);
	158	}
9e730a78 RD	159	}
	160	} else if (sc.state == SCE_POV_COMMENTLINE) {
	161	if (sc.atLineEnd) {
1e9bafca	162	sc.ForwardSetState(SCE_POV_DEFAULT);
9e730a78 RD	163	}
9e730a78 RD	164	} else if (sc.state == SCE_POV_STRING) {
88a8b04e RD	165	if (sc.ch == '\\') {
	166	stringLen++;
	167	if (strchr("abfnrtuv0'\"", sc.chNext)) {
	168	// Compound characters are counted as one.
	169	// Note: for Unicode chars \u, we shouldn't count the next 4 digits...
	170	sc.Forward();
	171	}
	172	} else if (sc.ch == '\"') {
	173	sc.ForwardSetState(SCE_POV_DEFAULT);
	174	} else if (sc.atLineEnd) {
	175	sc.ChangeState(SCE_POV_STRINGEOL);
	176	sc.ForwardSetState(SCE_POV_DEFAULT);
	177	} else {
	178	stringLen++;
	179	}
	180	if (stringLen > 256) {
	181	// Strings are limited to 256 chars
	182	sc.SetState(SCE_POV_STRINGEOL);
	183	}
	184	} else if (sc.state == SCE_POV_STRINGEOL) {
9e730a78 RD	185	if (sc.ch == '\\') {
	186	if (sc.chNext == '\"' \|\| sc.chNext == '\\') {
	187	sc.Forward();
	188	}
	189	} else if (sc.ch == '\"') {
88a8b04e RD	190	sc.ForwardSetState(SCE_C_DEFAULT);
88a8b04e RD	191	} else if (sc.atLineEnd) {
9e730a78 RD	192	sc.ForwardSetState(SCE_POV_DEFAULT);
	193	}
	194	}
	195
	196	// Determine if a new state should be entered.
	197	if (sc.state == SCE_POV_DEFAULT) {
	198	if (IsADigit(sc.ch) \|\| (sc.ch == '.' && IsADigit(sc.chNext))) {
	199	sc.SetState(SCE_POV_NUMBER);
88a8b04e	200	} else if (IsAWordStart(sc.ch)) {
9e730a78 RD	201	sc.SetState(SCE_POV_IDENTIFIER);
9e730a78 RD	202	} else if (sc.Match('/', '*')) {
88a8b04e	203	blockCommentLevel = 1;
9e730a78 RD	204	sc.SetState(SCE_POV_COMMENT);
	205	sc.Forward(); // Eat the * so it isn't used for the end of the comment
	206	} else if (sc.Match('/', '/')) {
	207	sc.SetState(SCE_POV_COMMENTLINE);
	208	} else if (sc.ch == '\"') {
	209	sc.SetState(SCE_POV_STRING);
88a8b04e RD	210	stringLen = 0;
	211	} else if (sc.ch == '#') {
	212	sc.SetState(SCE_POV_DIRECTIVE);
	213	// Skip whitespace between # and directive word
	214	do {
	215	sc.Forward();
	216	} while ((sc.ch == ' ' \|\| sc.ch == '\t') && sc.More());
	217	if (sc.atLineEnd) {
	218	sc.SetState(SCE_POV_DEFAULT);
	219	}
	220	} else if (isoperator(static_cast<char>(sc.ch))) {
9e730a78	221	sc.SetState(SCE_POV_OPERATOR);
9e730a78 RD	222	}
9e730a78 RD	223	}
9e730a78 RD	224	}
	225	sc.Complete();
	226	}
	227
88a8b04e RD	228	static void FoldPovDoc(
	229	unsigned int startPos,
	230	int length,
	231	int initStyle,
	232	WordList *[],
	233	Accessor &styler) {
9e730a78	234
88a8b04e RD	235	bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
88a8b04e RD	236	bool foldDirective = styler.GetPropertyInt("fold.directive") != 0;
9e730a78 RD	237	bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
	238	unsigned int endPos = startPos + length;
	239	int visibleChars = 0;
	240	int lineCurrent = styler.GetLine(startPos);
	241	int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
	242	int levelCurrent = levelPrev;
	243	char chNext = styler[startPos];
	244	int styleNext = styler.StyleAt(startPos);
	245	int style = initStyle;
	246	for (unsigned int i = startPos; i < endPos; i++) {
	247	char ch = chNext;
	248	chNext = styler.SafeGetCharAt(i + 1);
	249	int stylePrev = style;
	250	style = styleNext;
	251	styleNext = styler.StyleAt(i + 1);
	252	bool atEOL = (ch == '\r' && chNext != '\n') \|\| (ch == '\n');
88a8b04e RD	253	if (foldComment && (style == SCE_POV_COMMENT)) {
88a8b04e RD	254	if (stylePrev != SCE_POV_COMMENT) {
9e730a78	255	levelCurrent++;
88a8b04e	256	} else if ((styleNext != SCE_POV_COMMENT) && !atEOL) {
9e730a78 RD	257	// Comments don't end at end of line and the next character may be unstyled.
	258	levelCurrent--;
	259	}
	260	}
88a8b04e RD	261	if (foldComment && (style == SCE_POV_COMMENTLINE)) {
	262	if ((ch == '/') && (chNext == '/')) {
	263	char chNext2 = styler.SafeGetCharAt(i + 2);
	264	if (chNext2 == '{') {
	265	levelCurrent++;
	266	} else if (chNext2 == '}') {
	267	levelCurrent--;
	268	}
	269	}
	270	}
	271	if (foldDirective && (style == SCE_POV_DIRECTIVE)) {
	272	if (ch == '#') {
	273	unsigned int j=i+1;
	274	while ((j<endPos) && IsASpaceOrTab(styler.SafeGetCharAt(j))) {
	275	j++;
	276	}
	277	}
	278	}
	279	if (style == SCE_POV_OPERATOR) {
9e730a78 RD	280	if (ch == '{') {
	281	levelCurrent++;
	282	} else if (ch == '}') {
	283	levelCurrent--;
	284	}
	285	}
	286	if (atEOL) {
	287	int lev = levelPrev;
	288	if (visibleChars == 0 && foldCompact)
	289	lev \|= SC_FOLDLEVELWHITEFLAG;
	290	if ((levelCurrent > levelPrev) && (visibleChars > 0))
	291	lev \|= SC_FOLDLEVELHEADERFLAG;
	292	if (lev != styler.LevelAt(lineCurrent)) {
	293	styler.SetLevel(lineCurrent, lev);
	294	}
	295	lineCurrent++;
	296	levelPrev = levelCurrent;
	297	visibleChars = 0;
	298	}
	299	if (!isspacechar(ch))
	300	visibleChars++;
	301	}
	302	// Fill in the real level of the next line, keeping the current flags as they will be filled in later
	303	int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
	304	styler.SetLevel(lineCurrent, levelPrev \| flagsNext);
	305	}
	306
88a8b04e RD	307	static const char * const povWordLists[] = {
	308	"Language directives",
	309	"Objects & CSG & Appearance",
	310	"Types & Modifiers & Items",
	311	"Predefined Identifiers",
	312	"Predefined Functions",
	313	"User defined 1",
	314	"User defined 2",
	315	"User defined 3",
	316	0,
	317	};
9e730a78	318
88a8b04e	319	LexerModule lmPOV(SCLEX_POV, ColourisePovDoc, "pov", FoldPovDoc, povWordLists);