src/stc/scintilla/lexers/LexVerilog.cxx

// Scintilla source code edit control
/** @file LexVerilog.cxx
 ** Lexer for Verilog.
 ** Written by Avi Yegudin, based on C++ lexer by Neil Hodgson
 **/
// Copyright 1998-2002 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 == '_' || ch == '\''|| ch == '$');
}

static inline bool IsAWordStart(const int ch) {
	return (ch < 0x80) && (isalnum(ch) || ch == '_' || ch == '$');
}

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

	WordList &keywords = *keywordlists[0];
	WordList &keywords2 = *keywordlists[1];
	WordList &keywords3 = *keywordlists[2];
	WordList &keywords4 = *keywordlists[3];

	// Do not leak onto next line
	if (initStyle == SCE_V_STRINGEOL)
		initStyle = SCE_V_DEFAULT;

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

	for (; sc.More(); sc.Forward()) {

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

		// Handle line continuation generically.
		if (sc.ch == '\\') {
			if (sc.chNext == '\n' || sc.chNext == '\r') {
				sc.Forward();
				if (sc.ch == '\r' && sc.chNext == '\n') {
					sc.Forward();
				}
				continue;
			}
		}

		// Determine if the current state should terminate.
		if (sc.state == SCE_V_OPERATOR) {
			sc.SetState(SCE_V_DEFAULT);
		} else if (sc.state == SCE_V_NUMBER) {
			if (!IsAWordChar(sc.ch)) {
				sc.SetState(SCE_V_DEFAULT);
			}
		} else if (sc.state == SCE_V_IDENTIFIER) {
			if (!IsAWordChar(sc.ch) || (sc.ch == '.')) {
				char s[100];
                                sc.GetCurrent(s, sizeof(s));
				if (keywords.InList(s)) {
					sc.ChangeState(SCE_V_WORD);
				} else if (keywords2.InList(s)) {
					sc.ChangeState(SCE_V_WORD2);
				} else if (keywords3.InList(s)) {
					sc.ChangeState(SCE_V_WORD3);
                                } else if (keywords4.InList(s)) {
					sc.ChangeState(SCE_V_USER);
				}
				sc.SetState(SCE_V_DEFAULT);
			}
		} else if (sc.state == SCE_V_PREPROCESSOR) {
                        if (!IsAWordChar(sc.ch)) {
                                sc.SetState(SCE_V_DEFAULT);
                        }
		} else if (sc.state == SCE_V_COMMENT) {
			if (sc.Match('*', '/')) {
				sc.Forward();
				sc.ForwardSetState(SCE_V_DEFAULT);
			}
		} else if (sc.state == SCE_V_COMMENTLINE || sc.state == SCE_V_COMMENTLINEBANG) {
			if (sc.atLineStart) {
				sc.SetState(SCE_V_DEFAULT);
			}
                } else if (sc.state == SCE_V_STRING) {
			if (sc.ch == '\\') {
				if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
					sc.Forward();
				}
			} else if (sc.ch == '\"') {
				sc.ForwardSetState(SCE_V_DEFAULT);
			} else if (sc.atLineEnd) {
				sc.ChangeState(SCE_V_STRINGEOL);
				sc.ForwardSetState(SCE_V_DEFAULT);
			}
		}

		// Determine if a new state should be entered.
		if (sc.state == SCE_V_DEFAULT) {
			if (IsADigit(sc.ch) || (sc.ch == '\'') || (sc.ch == '.' && IsADigit(sc.chNext))) {
				sc.SetState(SCE_V_NUMBER);
			} else if (IsAWordStart(sc.ch)) {
				sc.SetState(SCE_V_IDENTIFIER);
			} else if (sc.Match('/', '*')) {
                                sc.SetState(SCE_V_COMMENT);
				sc.Forward();	// Eat the * so it isn't used for the end of the comment
			} else if (sc.Match('/', '/')) {
				if (sc.Match("//!"))	// Nice to have a different comment style
					sc.SetState(SCE_V_COMMENTLINEBANG);
				else
					sc.SetState(SCE_V_COMMENTLINE);
			} else if (sc.ch == '\"') {
				sc.SetState(SCE_V_STRING);
			} else if (sc.ch == '`') {
				sc.SetState(SCE_V_PREPROCESSOR);
				// Skip whitespace between ` and preprocessor word
				do {
					sc.Forward();
				} while ((sc.ch == ' ' || sc.ch == '\t') && sc.More());
				if (sc.atLineEnd) {
					sc.SetState(SCE_V_DEFAULT);
				}
			} else if (isoperator(static_cast<char>(sc.ch)) || sc.ch == '@' || sc.ch == '#') {
				sc.SetState(SCE_V_OPERATOR);
			}
		}
	}
	sc.Complete();
}

static bool IsStreamCommentStyle(int style) {
	return style == SCE_V_COMMENT;
}

static bool IsCommentLine(int line, Accessor &styler) {
	int pos = styler.LineStart(line);
	int eolPos = styler.LineStart(line + 1) - 1;
	for (int i = pos; i < eolPos; i++) {
		char ch = styler[i];
		char chNext = styler.SafeGetCharAt(i + 1);
		int style = styler.StyleAt(i);
		if (ch == '/' && chNext == '/' &&
		   (style == SCE_V_COMMENTLINE || style == SCE_V_COMMENTLINEBANG)) {
			return true;
		} else if (!IsASpaceOrTab(ch)) {
			return false;
		}
	}
	return false;
}
// Store both the current line's fold level and the next lines in the
// level store to make it easy to pick up with each increment
// and to make it possible to fiddle the current level for "} else {".
static void FoldNoBoxVerilogDoc(unsigned int startPos, int length, int initStyle,
                            Accessor &styler) {
	bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
	bool foldPreprocessor = styler.GetPropertyInt("fold.preprocessor") != 0;
	bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
	bool foldAtElse = styler.GetPropertyInt("fold.at.else", 0) != 0;
        // Verilog specific folding options:
        // fold_at_module -
        //      Generally used methodology in verilog code is
        //      one module per file, so folding at module definition is useless.
        // fold_at_brace/parenthese -
        //      Folding of long port lists can be convenient.
	bool foldAtModule = styler.GetPropertyInt("fold.verilog.flags", 0) != 0;
	bool foldAtBrace  = 1;
	bool foldAtParenthese  = 1;

	unsigned int endPos = startPos + length;
	int visibleChars = 0;
	int lineCurrent = styler.GetLine(startPos);
	int levelCurrent = SC_FOLDLEVELBASE;
	if (lineCurrent > 0)
		levelCurrent = styler.LevelAt(lineCurrent-1) >> 16;
	int levelMinCurrent = levelCurrent;
	int levelNext = levelCurrent;
	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 && IsStreamCommentStyle(style)) {
			if (!IsStreamCommentStyle(stylePrev)) {
				levelNext++;
			} else if (!IsStreamCommentStyle(styleNext) && !atEOL) {
				// Comments don't end at end of line and the next character may be unstyled.
				levelNext--;
			}
		}
		if (foldComment && atEOL && IsCommentLine(lineCurrent, styler))
		{
			if (!IsCommentLine(lineCurrent - 1, styler)
			    && IsCommentLine(lineCurrent + 1, styler))
				levelNext++;
			else if (IsCommentLine(lineCurrent - 1, styler)
			         && !IsCommentLine(lineCurrent+1, styler))
				levelNext--;
		}
		if (foldComment && (style == SCE_V_COMMENTLINE)) {
			if ((ch == '/') && (chNext == '/')) {
				char chNext2 = styler.SafeGetCharAt(i + 2);
				if (chNext2 == '{') {
					levelNext++;
				} else if (chNext2 == '}') {
					levelNext--;
				}
			}
		}
		if (foldPreprocessor && (style == SCE_V_PREPROCESSOR)) {
			if (ch == '`') {
				unsigned int j = i + 1;
				while ((j < endPos) && IsASpaceOrTab(styler.SafeGetCharAt(j))) {
					j++;
				}
				if (styler.Match(j, "if")) {
					levelNext++;
				} else if (styler.Match(j, "end")) {
					levelNext--;
				}
			}
		}
                if (style == SCE_V_OPERATOR) {
                    if (foldAtParenthese) {
			if (ch == '(') {
				levelNext++;
			} else if (ch == ')') {
				levelNext--;
			}
                    }
		}
                if (style == SCE_V_OPERATOR) {
                    if (foldAtBrace) {
			if (ch == '{') {
				levelNext++;
			} else if (ch == '}') {
				levelNext--;
			}
                    }
		}
                if (style == SCE_V_WORD && stylePrev != SCE_V_WORD) {
                        unsigned int j = i;
                        if (styler.Match(j, "case") ||
                            styler.Match(j, "casex") ||
                            styler.Match(j, "casez") ||
                            styler.Match(j, "class") ||
                            styler.Match(j, "function") ||
                            styler.Match(j, "generate") ||
                            styler.Match(j, "covergroup") ||
                            styler.Match(j, "package") ||
                            styler.Match(j, "primitive") ||
                            styler.Match(j, "program") ||
                            styler.Match(j, "sequence") ||
                            styler.Match(j, "specify") ||
                            styler.Match(j, "table") ||
                            styler.Match(j, "task") ||
                            styler.Match(j, "fork") ||
                            (styler.Match(j, "module") && foldAtModule) ||
                            styler.Match(j, "begin")) {
                                levelNext++;
                        } else if (styler.Match(j, "endcase") ||
                                   styler.Match(j, "endclass") ||
                                   styler.Match(j, "endfunction") ||
                                   styler.Match(j, "endgenerate") ||
                                   styler.Match(j, "endgroup") ||
                                   styler.Match(j, "endpackage") ||
                                   styler.Match(j, "endprimitive") ||
                                   styler.Match(j, "endprogram") ||
                                   styler.Match(j, "endsequence") ||
                                   styler.Match(j, "endspecify") ||
                                   styler.Match(j, "endtable") ||
                                   styler.Match(j, "endtask") ||
                                   styler.Match(j, "join") ||
                                   styler.Match(j, "join_any") ||
                                   styler.Match(j, "join_none") ||
                                   (styler.Match(j, "endmodule") && foldAtModule) ||
                                   (styler.Match(j, "end") && !IsAWordChar(styler.SafeGetCharAt(j+3)))) {
                                levelNext--;
                        }
		}
		if (atEOL) {
			int levelUse = levelCurrent;
			if (foldAtElse) {
				levelUse = levelMinCurrent;
			}
			int lev = levelUse | levelNext << 16;
			if (visibleChars == 0 && foldCompact)
				lev |= SC_FOLDLEVELWHITEFLAG;
			if (levelUse < levelNext)
				lev |= SC_FOLDLEVELHEADERFLAG;
			if (lev != styler.LevelAt(lineCurrent)) {
				styler.SetLevel(lineCurrent, lev);
			}
			lineCurrent++;
			levelCurrent = levelNext;
			levelMinCurrent = levelCurrent;
			visibleChars = 0;
		}
		if (!isspacechar(ch))
			visibleChars++;
	}
}

static void FoldVerilogDoc(unsigned int startPos, int length, int initStyle, WordList *[],
                       Accessor &styler) {
	FoldNoBoxVerilogDoc(startPos, length, initStyle, styler);
}

static const char * const verilogWordLists[] = {
            "Primary keywords and identifiers",
            "Secondary keywords and identifiers",
            "System Tasks",
            "User defined tasks and identifiers",
            "Unused",
            0,
        };


LexerModule lmVerilog(SCLEX_VERILOG, ColouriseVerilogDoc, "verilog", FoldVerilogDoc, verilogWordLists);
Commit	Line	Data
	1	// Scintilla source code edit control
	2	/** @file LexVerilog.cxx
	3	** Lexer for Verilog.
	4	** Written by Avi Yegudin, based on C++ lexer by Neil Hodgson
	5	**/
	6	// Copyright 1998-2002 by Neil Hodgson <neilh@scintilla.org>
	7	// The License.txt file describes the conditions under which this software may be distributed.
	8
	9	#include <stdlib.h>
	10	#include <string.h>
	11	#include <stdio.h>
	12	#include <stdarg.h>
	13	#include <assert.h>
	14	#include <ctype.h>
	15
	16	#include "ILexer.h"
	17	#include "Scintilla.h"
	18	#include "SciLexer.h"
	19
	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	#ifdef SCI_NAMESPACE
	28	using namespace Scintilla;
	29	#endif
	30
	31	static inline bool IsAWordChar(const int ch) {
	32	return (ch < 0x80) && (isalnum(ch) \|\| ch == '.' \|\| ch == '_' \|\| ch == '\''\|\| ch == '$');
	33	}
	34
	35	static inline bool IsAWordStart(const int ch) {
	36	return (ch < 0x80) && (isalnum(ch) \|\| ch == '_' \|\| ch == '$');
	37	}
	38
	39	static void ColouriseVerilogDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
	40	Accessor &styler) {
	41
	42	WordList &keywords = *keywordlists[0];
	43	WordList &keywords2 = *keywordlists[1];
	44	WordList &keywords3 = *keywordlists[2];
	45	WordList &keywords4 = *keywordlists[3];
	46
	47	// Do not leak onto next line
	48	if (initStyle == SCE_V_STRINGEOL)
	49	initStyle = SCE_V_DEFAULT;
	50
	51	StyleContext sc(startPos, length, initStyle, styler);
	52
	53	for (; sc.More(); sc.Forward()) {
	54
	55	if (sc.atLineStart && (sc.state == SCE_V_STRING)) {
	56	// Prevent SCE_V_STRINGEOL from leaking back to previous line
	57	sc.SetState(SCE_V_STRING);
	58	}
	59
	60	// Handle line continuation generically.
	61	if (sc.ch == '\\') {
	62	if (sc.chNext == '\n' \|\| sc.chNext == '\r') {
	63	sc.Forward();
	64	if (sc.ch == '\r' && sc.chNext == '\n') {
	65	sc.Forward();
	66	}
	67	continue;
	68	}
	69	}
	70
	71	// Determine if the current state should terminate.
	72	if (sc.state == SCE_V_OPERATOR) {
	73	sc.SetState(SCE_V_DEFAULT);
	74	} else if (sc.state == SCE_V_NUMBER) {
	75	if (!IsAWordChar(sc.ch)) {
	76	sc.SetState(SCE_V_DEFAULT);
	77	}
	78	} else if (sc.state == SCE_V_IDENTIFIER) {
	79	if (!IsAWordChar(sc.ch) \|\| (sc.ch == '.')) {
	80	char s[100];
	81	sc.GetCurrent(s, sizeof(s));
	82	if (keywords.InList(s)) {
	83	sc.ChangeState(SCE_V_WORD);
	84	} else if (keywords2.InList(s)) {
	85	sc.ChangeState(SCE_V_WORD2);
	86	} else if (keywords3.InList(s)) {
	87	sc.ChangeState(SCE_V_WORD3);
	88	} else if (keywords4.InList(s)) {
	89	sc.ChangeState(SCE_V_USER);
	90	}
	91	sc.SetState(SCE_V_DEFAULT);
	92	}
	93	} else if (sc.state == SCE_V_PREPROCESSOR) {
	94	if (!IsAWordChar(sc.ch)) {
	95	sc.SetState(SCE_V_DEFAULT);
	96	}
	97	} else if (sc.state == SCE_V_COMMENT) {
	98	if (sc.Match('*', '/')) {
	99	sc.Forward();
	100	sc.ForwardSetState(SCE_V_DEFAULT);
	101	}
	102	} else if (sc.state == SCE_V_COMMENTLINE \|\| sc.state == SCE_V_COMMENTLINEBANG) {
	103	if (sc.atLineStart) {
	104	sc.SetState(SCE_V_DEFAULT);
	105	}
	106	} else if (sc.state == SCE_V_STRING) {
	107	if (sc.ch == '\\') {
	108	if (sc.chNext == '\"' \|\| sc.chNext == '\'' \|\| sc.chNext == '\\') {
	109	sc.Forward();
	110	}
	111	} else if (sc.ch == '\"') {
	112	sc.ForwardSetState(SCE_V_DEFAULT);
	113	} else if (sc.atLineEnd) {
	114	sc.ChangeState(SCE_V_STRINGEOL);
	115	sc.ForwardSetState(SCE_V_DEFAULT);
	116	}
	117	}
	118
	119	// Determine if a new state should be entered.
	120	if (sc.state == SCE_V_DEFAULT) {
	121	if (IsADigit(sc.ch) \|\| (sc.ch == '\'') \|\| (sc.ch == '.' && IsADigit(sc.chNext))) {
	122	sc.SetState(SCE_V_NUMBER);
	123	} else if (IsAWordStart(sc.ch)) {
	124	sc.SetState(SCE_V_IDENTIFIER);
	125	} else if (sc.Match('/', '*')) {
	126	sc.SetState(SCE_V_COMMENT);
	127	sc.Forward(); // Eat the * so it isn't used for the end of the comment
	128	} else if (sc.Match('/', '/')) {
	129	if (sc.Match("//!")) // Nice to have a different comment style
	130	sc.SetState(SCE_V_COMMENTLINEBANG);
	131	else
	132	sc.SetState(SCE_V_COMMENTLINE);
	133	} else if (sc.ch == '\"') {
	134	sc.SetState(SCE_V_STRING);
	135	} else if (sc.ch == '`') {
	136	sc.SetState(SCE_V_PREPROCESSOR);
	137	// Skip whitespace between ` and preprocessor word
	138	do {
	139	sc.Forward();
	140	} while ((sc.ch == ' ' \|\| sc.ch == '\t') && sc.More());
	141	if (sc.atLineEnd) {
	142	sc.SetState(SCE_V_DEFAULT);
	143	}
	144	} else if (isoperator(static_cast<char>(sc.ch)) \|\| sc.ch == '@' \|\| sc.ch == '#') {
	145	sc.SetState(SCE_V_OPERATOR);
	146	}
	147	}
	148	}
	149	sc.Complete();
	150	}
	151
	152	static bool IsStreamCommentStyle(int style) {
	153	return style == SCE_V_COMMENT;
	154	}
	155
	156	static bool IsCommentLine(int line, Accessor &styler) {
	157	int pos = styler.LineStart(line);
	158	int eolPos = styler.LineStart(line + 1) - 1;
	159	for (int i = pos; i < eolPos; i++) {
	160	char ch = styler[i];
	161	char chNext = styler.SafeGetCharAt(i + 1);
	162	int style = styler.StyleAt(i);
	163	if (ch == '/' && chNext == '/' &&
	164	(style == SCE_V_COMMENTLINE \|\| style == SCE_V_COMMENTLINEBANG)) {
	165	return true;
	166	} else if (!IsASpaceOrTab(ch)) {
	167	return false;
	168	}
	169	}
	170	return false;
	171	}
	172	// Store both the current line's fold level and the next lines in the
	173	// level store to make it easy to pick up with each increment
	174	// and to make it possible to fiddle the current level for "} else {".
	175	static void FoldNoBoxVerilogDoc(unsigned int startPos, int length, int initStyle,
	176	Accessor &styler) {
	177	bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
	178	bool foldPreprocessor = styler.GetPropertyInt("fold.preprocessor") != 0;
	179	bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
	180	bool foldAtElse = styler.GetPropertyInt("fold.at.else", 0) != 0;
	181	// Verilog specific folding options:
	182	// fold_at_module -
	183	// Generally used methodology in verilog code is
	184	// one module per file, so folding at module definition is useless.
	185	// fold_at_brace/parenthese -
	186	// Folding of long port lists can be convenient.
	187	bool foldAtModule = styler.GetPropertyInt("fold.verilog.flags", 0) != 0;
	188	bool foldAtBrace = 1;
	189	bool foldAtParenthese = 1;
	190
	191	unsigned int endPos = startPos + length;
	192	int visibleChars = 0;
	193	int lineCurrent = styler.GetLine(startPos);
	194	int levelCurrent = SC_FOLDLEVELBASE;
	195	if (lineCurrent > 0)
	196	levelCurrent = styler.LevelAt(lineCurrent-1) >> 16;
	197	int levelMinCurrent = levelCurrent;
	198	int levelNext = levelCurrent;
	199	char chNext = styler[startPos];
	200	int styleNext = styler.StyleAt(startPos);
	201	int style = initStyle;
	202	for (unsigned int i = startPos; i < endPos; i++) {
	203	char ch = chNext;
	204	chNext = styler.SafeGetCharAt(i + 1);
	205	int stylePrev = style;
	206	style = styleNext;
	207	styleNext = styler.StyleAt(i + 1);
	208	bool atEOL = (ch == '\r' && chNext != '\n') \|\| (ch == '\n');
	209	if (foldComment && IsStreamCommentStyle(style)) {
	210	if (!IsStreamCommentStyle(stylePrev)) {
	211	levelNext++;
	212	} else if (!IsStreamCommentStyle(styleNext) && !atEOL) {
	213	// Comments don't end at end of line and the next character may be unstyled.
	214	levelNext--;
	215	}
	216	}
	217	if (foldComment && atEOL && IsCommentLine(lineCurrent, styler))
	218	{
	219	if (!IsCommentLine(lineCurrent - 1, styler)
	220	&& IsCommentLine(lineCurrent + 1, styler))
	221	levelNext++;
	222	else if (IsCommentLine(lineCurrent - 1, styler)
	223	&& !IsCommentLine(lineCurrent+1, styler))
	224	levelNext--;
	225	}
	226	if (foldComment && (style == SCE_V_COMMENTLINE)) {
	227	if ((ch == '/') && (chNext == '/')) {
	228	char chNext2 = styler.SafeGetCharAt(i + 2);
	229	if (chNext2 == '{') {
	230	levelNext++;
	231	} else if (chNext2 == '}') {
	232	levelNext--;
	233	}
	234	}
	235	}
	236	if (foldPreprocessor && (style == SCE_V_PREPROCESSOR)) {
	237	if (ch == '`') {
	238	unsigned int j = i + 1;
	239	while ((j < endPos) && IsASpaceOrTab(styler.SafeGetCharAt(j))) {
	240	j++;
	241	}
	242	if (styler.Match(j, "if")) {
	243	levelNext++;
	244	} else if (styler.Match(j, "end")) {
	245	levelNext--;
	246	}
	247	}
	248	}
	249	if (style == SCE_V_OPERATOR) {
	250	if (foldAtParenthese) {
	251	if (ch == '(') {
	252	levelNext++;
	253	} else if (ch == ')') {
	254	levelNext--;
	255	}
	256	}
	257	}
	258	if (style == SCE_V_OPERATOR) {
	259	if (foldAtBrace) {
	260	if (ch == '{') {
	261	levelNext++;
	262	} else if (ch == '}') {
	263	levelNext--;
	264	}
	265	}
	266	}
	267	if (style == SCE_V_WORD && stylePrev != SCE_V_WORD) {
	268	unsigned int j = i;
	269	if (styler.Match(j, "case") \|\|
	270	styler.Match(j, "casex") \|\|
	271	styler.Match(j, "casez") \|\|
	272	styler.Match(j, "class") \|\|
	273	styler.Match(j, "function") \|\|
	274	styler.Match(j, "generate") \|\|
	275	styler.Match(j, "covergroup") \|\|
	276	styler.Match(j, "package") \|\|
	277	styler.Match(j, "primitive") \|\|
	278	styler.Match(j, "program") \|\|
	279	styler.Match(j, "sequence") \|\|
	280	styler.Match(j, "specify") \|\|
	281	styler.Match(j, "table") \|\|
	282	styler.Match(j, "task") \|\|
	283	styler.Match(j, "fork") \|\|
	284	(styler.Match(j, "module") && foldAtModule) \|\|
	285	styler.Match(j, "begin")) {
	286	levelNext++;
	287	} else if (styler.Match(j, "endcase") \|\|
	288	styler.Match(j, "endclass") \|\|
	289	styler.Match(j, "endfunction") \|\|
	290	styler.Match(j, "endgenerate") \|\|
	291	styler.Match(j, "endgroup") \|\|
	292	styler.Match(j, "endpackage") \|\|
	293	styler.Match(j, "endprimitive") \|\|
	294	styler.Match(j, "endprogram") \|\|
	295	styler.Match(j, "endsequence") \|\|
	296	styler.Match(j, "endspecify") \|\|
	297	styler.Match(j, "endtable") \|\|
	298	styler.Match(j, "endtask") \|\|
	299	styler.Match(j, "join") \|\|
	300	styler.Match(j, "join_any") \|\|
	301	styler.Match(j, "join_none") \|\|
	302	(styler.Match(j, "endmodule") && foldAtModule) \|\|
	303	(styler.Match(j, "end") && !IsAWordChar(styler.SafeGetCharAt(j+3)))) {
	304	levelNext--;
	305	}
	306	}
	307	if (atEOL) {
	308	int levelUse = levelCurrent;
	309	if (foldAtElse) {
	310	levelUse = levelMinCurrent;
	311	}
	312	int lev = levelUse \| levelNext << 16;
	313	if (visibleChars == 0 && foldCompact)
	314	lev \|= SC_FOLDLEVELWHITEFLAG;
	315	if (levelUse < levelNext)
	316	lev \|= SC_FOLDLEVELHEADERFLAG;
	317	if (lev != styler.LevelAt(lineCurrent)) {
	318	styler.SetLevel(lineCurrent, lev);
	319	}
	320	lineCurrent++;
	321	levelCurrent = levelNext;
	322	levelMinCurrent = levelCurrent;
	323	visibleChars = 0;
	324	}
	325	if (!isspacechar(ch))
	326	visibleChars++;
	327	}
	328	}
	329
	330	static void FoldVerilogDoc(unsigned int startPos, int length, int initStyle, WordList *[],
	331	Accessor &styler) {
	332	FoldNoBoxVerilogDoc(startPos, length, initStyle, styler);
	333	}
	334
	335	static const char * const verilogWordLists[] = {
	336	"Primary keywords and identifiers",
	337	"Secondary keywords and identifiers",
	338	"System Tasks",
	339	"User defined tasks and identifiers",
	340	"Unused",
	341	0,
	342	};
	343
	344
	345	LexerModule lmVerilog(SCLEX_VERILOG, ColouriseVerilogDoc, "verilog", FoldVerilogDoc, verilogWordLists);