[wxWidgets.git] / contrib / src / stc / scintilla / src / LexTCL.cxx

// Scintilla source code edit control
/** @file LexTCL.cxx
 ** Lexer for TCL language.
 **/
// Copyright 1998-2001 by Andre Arpin <arpin@kingston.net>
// The License.txt file describes the conditions under which this software may be distributed.

#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdarg.h>
#include <stdio.h>

#include "Platform.h"

#include "PropSet.h"
#include "Accessor.h"
#include "StyleContext.h"
#include "KeyWords.h"
#include "Scintilla.h"
#include "SciLexer.h"

// Extended to accept accented characters
static inline bool IsAWordChar(int ch) {
	return ch >= 0x80 ||
        (isalnum(ch) || ch == '_' || ch ==':' || ch=='.'); // : name space separator
}

static inline bool IsAWordStart(int ch) {
	return ch >= 0x80 || (ch ==':' || isalpha(ch) || 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) &&
	       (IsADigit(ch, 0x10) || toupper(ch) == 'E' ||
	        ch == '.' || ch == '-' || ch == '+');
}

static void ColouriseTCLDoc(unsigned int startPos, int length, int , WordList *keywordlists[], Accessor &styler) {
#define  isComment(s) (s==SCE_TCL_COMMENT || s==SCE_TCL_COMMENTLINE || s==SCE_TCL_COMMENT_BOX || s==SCE_TCL_BLOCK_COMMENT)
	bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
	bool commentLevel = false;
    bool subBrace = false; // substitution begin with a brace ${.....}
	enum tLineState {LS_DEFAULT, LS_OPEN_COMMENT, LS_OPEN_DOUBLE_QUOTE, LS_COMMENT_BOX, LS_MASK_STATE = 0xf, 
        LS_COMMAND_EXPECTED = 16, LS_BRACE_ONLY = 32 } lineState = LS_DEFAULT;
	bool prevSlash = false;
	int currentLevel = 0;
    bool expected = 0;
    bool subParen = 0;

	int currentLine = styler.GetLine(startPos);
    if (currentLine > 0)
        currentLine--;
	length += startPos - styler.LineStart(currentLine);
	// make sure lines overlap
	startPos = styler.LineStart(currentLine);

	WordList &keywords = *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];
    WordList &keywords9 = *keywordlists[8];

	if (currentLine > 0) {
        int ls = styler.GetLineState(currentLine - 1);
		lineState = tLineState(ls & LS_MASK_STATE);
		expected = LS_COMMAND_EXPECTED == tLineState(ls & LS_COMMAND_EXPECTED);
        subBrace = LS_BRACE_ONLY == tLineState(ls & LS_BRACE_ONLY);
		currentLevel = styler.LevelAt(currentLine - 1) >> 17;
		commentLevel = (styler.LevelAt(currentLine - 1) >> 16) & 1;
	} else
		styler.SetLevel(0, SC_FOLDLEVELBASE | SC_FOLDLEVELHEADERFLAG);
	bool visibleChars = false;

	int previousLevel = currentLevel;
    StyleContext sc(startPos, length, SCE_TCL_DEFAULT, styler);
	for (; ; sc.Forward()) {
next:
        if (sc.ch=='\r' && sc.chNext == '\n') // only ignore \r on PC process on the mac 
            continue;
        bool atEnd = !sc.More();  // make sure we coloured the last word
        if (lineState != LS_DEFAULT) {
            sc.SetState(SCE_TCL_DEFAULT);
            if (lineState == LS_OPEN_COMMENT)
                sc.SetState(SCE_TCL_COMMENTLINE);
            else if (lineState == LS_OPEN_DOUBLE_QUOTE)
                sc.SetState(SCE_TCL_IN_QUOTE);
            else if (lineState == LS_COMMENT_BOX && (sc.ch == '#' || (sc.ch == ' ' && sc.chNext=='#')))
                sc.SetState(SCE_TCL_COMMENT_BOX);
            lineState = LS_DEFAULT;
        }
        if (subBrace) { // ${ overrides every thing even \ except }
            if (sc.ch == '}') {
                subBrace = false;
                sc.SetState(SCE_TCL_OPERATOR);
                sc.ForwardSetState(SCE_TCL_DEFAULT);
                goto next;
            }
            else
                sc.SetState(SCE_TCL_SUB_BRACE);
            if (!sc.atLineEnd)
                continue;
        } else if (sc.state == SCE_TCL_DEFAULT || sc.state ==SCE_TCL_OPERATOR) {
            expected &= isspacechar(static_cast<unsigned char>(sc.ch)) || IsAWordStart(sc.ch) || sc.ch =='#';
        } else if (sc.state == SCE_TCL_SUBSTITUTION) {
            switch(sc.ch) {
            case '(':
                subParen=true;
                sc.SetState(SCE_TCL_OPERATOR);
                sc.ForwardSetState(SCE_TCL_SUBSTITUTION);
                continue;
            case ')':
                sc.SetState(SCE_TCL_OPERATOR);
                subParen=false;
                continue;
            case '$':
                continue;
            case ',':
                sc.SetState(SCE_TCL_OPERATOR);
                if (subParen)
                    sc.ForwardSetState(SCE_TCL_SUBSTITUTION);
                continue;
            default :
                // maybe spaces should be allowed ???
                if (!IsAWordChar(sc.ch)) { // probably the code is wrong
                    sc.SetState(SCE_TCL_DEFAULT);
                    subParen = 0;
                }
                break;
            }
        } else if (isComment(sc.state)) {
        } else if (!IsAWordChar(sc.ch)) {
            if ((sc.state == SCE_TCL_IDENTIFIER && expected) ||  sc.state == SCE_TCL_MODIFIER) {
                char w[100];
                char *s=w;
                sc.GetCurrent(w, sizeof(w));
                if (w[strlen(w)-1]=='\r')
                    w[strlen(w)-1]=0;
                while(*s == ':') // ignore leading : like in ::set a 10
                    ++s;
                bool quote = sc.state == SCE_TCL_IN_QUOTE;
                if (commentLevel  || expected) {
                    if (keywords.InList(s)) {
                        sc.ChangeState(quote ? SCE_TCL_WORD_IN_QUOTE : SCE_TCL_WORD);
                    } else if (keywords2.InList(s)) {
                        sc.ChangeState(quote ? SCE_TCL_WORD_IN_QUOTE : SCE_TCL_WORD2);
                    } else if (keywords3.InList(s)) {
                        sc.ChangeState(quote ? SCE_TCL_WORD_IN_QUOTE : SCE_TCL_WORD3);
                    } else if (keywords4.InList(s)) {
                        sc.ChangeState(quote ? SCE_TCL_WORD_IN_QUOTE : SCE_TCL_WORD4);
                    } else if (sc.GetRelative(-static_cast<int>(strlen(s))-1) == '{' &&
                        keywords5.InList(s) && sc.ch == '}') { // {keyword} exactly no spaces
                            sc.ChangeState(SCE_TCL_EXPAND);
                    }
                    if (keywords6.InList(s)) {
                        sc.ChangeState(SCE_TCL_WORD5);
                    } else if (keywords7.InList(s)) {
                        sc.ChangeState(SCE_TCL_WORD6);
                    } else if (keywords8.InList(s)) {
                        sc.ChangeState(SCE_TCL_WORD7);
                    } else if (keywords9.InList(s)) {
                        sc.ChangeState(SCE_TCL_WORD8);
                    } 
                }
                expected = false;
                sc.SetState(quote ? SCE_TCL_IN_QUOTE : SCE_TCL_DEFAULT);
            } else if (sc.state == SCE_TCL_MODIFIER || sc.state == SCE_TCL_IDENTIFIER) {
                sc.SetState(SCE_TCL_DEFAULT);
            }
        }
		if (atEnd)
			break;
        if (sc.atLineEnd) {
            lineState = LS_DEFAULT;
			currentLine = styler.GetLine(sc.currentPos);
			if (foldComment && sc.state!=SCE_TCL_COMMENT && isComment(sc.state)) {
				if (currentLevel == 0) {
					++currentLevel;
					commentLevel = true;
				}
			} else {
				if (visibleChars && commentLevel) {
					--currentLevel;
					--previousLevel;
					commentLevel = false;
				}
			}
			int flag = 0;
			if (!visibleChars)
				flag = SC_FOLDLEVELWHITEFLAG;
			if (currentLevel > previousLevel)
				flag = SC_FOLDLEVELHEADERFLAG;
			styler.SetLevel(currentLine, flag + previousLevel + SC_FOLDLEVELBASE + (currentLevel << 17) + (commentLevel << 16));

			// Update the line state, so it can be seen by next line
			if (sc.state == SCE_TCL_IN_QUOTE)
				lineState = LS_OPEN_DOUBLE_QUOTE;
			else {
			     if (prevSlash) {
				    if (isComment(sc.state))
					    lineState = LS_OPEN_COMMENT;
                } else if (sc.state == SCE_TCL_COMMENT_BOX)
                    lineState = LS_COMMENT_BOX;
			}
            styler.SetLineState(currentLine, 
                (subBrace ? LS_BRACE_ONLY : 0) |
                (expected ? LS_COMMAND_EXPECTED : 0)  | lineState);
            if (lineState == LS_COMMENT_BOX)
                sc.ForwardSetState(SCE_TCL_COMMENT_BOX);
            else if (lineState == LS_OPEN_DOUBLE_QUOTE)
                sc.ForwardSetState(SCE_TCL_IN_QUOTE);
            else
                sc.ForwardSetState(SCE_TCL_DEFAULT);
			prevSlash = false;
			previousLevel = currentLevel;
			goto next;
		}

		if (prevSlash) {
            prevSlash = false;
            if (sc.ch == '#' && IsANumberChar(sc.chNext))
                sc.ForwardSetState(SCE_TCL_NUMBER);
            continue;
		}
        prevSlash = sc.ch == '\\';
        if (isComment(sc.state))
            continue;
		if (sc.atLineStart) {
			visibleChars = false;
			if (sc.state!=SCE_TCL_IN_QUOTE && !isComment(sc.state))
            {
				sc.SetState(SCE_TCL_DEFAULT);
                expected = IsAWordStart(sc.ch)|| isspacechar(static_cast<unsigned char>(sc.ch));
            }
		}

		switch (sc.state) {
		case SCE_TCL_NUMBER:
			if (!IsANumberChar(sc.ch))
				sc.SetState(SCE_TCL_DEFAULT);
			break;
		case SCE_TCL_IN_QUOTE:
			if (sc.ch == '"') {
				sc.ForwardSetState(SCE_TCL_DEFAULT);
				visibleChars = true; // necessary if a " is the first and only character on a line
				goto next;
			} else if (sc.ch == '[' || sc.ch == ']' || sc.ch == '$') {
				sc.SetState(SCE_TCL_OPERATOR);
                expected = sc.ch == '[';
                sc.ForwardSetState(SCE_TCL_IN_QUOTE);
				goto next;
			}
            continue;
        case SCE_TCL_OPERATOR:
			sc.SetState(SCE_TCL_DEFAULT);
			break;
		}

		if (sc.ch == '#') {
			if (visibleChars) {
                if (sc.state != SCE_TCL_IN_QUOTE && expected)
					sc.SetState(SCE_TCL_COMMENT);
			} else {
                sc.SetState(SCE_TCL_COMMENTLINE);
                if (sc.chNext == '~')
                    sc.SetState(SCE_TCL_BLOCK_COMMENT);
                if (sc.atLineStart && (sc.chNext == '#' || sc.chNext == '-'))
                        sc.SetState(SCE_TCL_COMMENT_BOX);
            }
        }

		if (!isspacechar(static_cast<unsigned char>(sc.ch))) {
			visibleChars = true;
		}

		if (sc.ch == '\\') {
			prevSlash = true;
			continue;		
		}

		// Determine if a new state should be entered.
		if (sc.state == SCE_TCL_DEFAULT) {
            if (IsAWordStart(sc.ch)) {
				sc.SetState(SCE_TCL_IDENTIFIER);
			} else if (IsADigit(sc.ch) && !IsAWordChar(sc.chPrev)) {
				sc.SetState(SCE_TCL_NUMBER);
			} else {
				switch (sc.ch) {
				case '\"':
					sc.SetState(SCE_TCL_IN_QUOTE);
					break;
				case '{':
					sc.SetState(SCE_TCL_OPERATOR);
					expected = true;
					++currentLevel;
					break;
				case '}':
					sc.SetState(SCE_TCL_OPERATOR);
					--currentLevel;
					break;
				case '[':
                    expected = true;
				case ']':
				case '(':
				case ')':
					sc.SetState(SCE_TCL_OPERATOR);
					break;
				case ';':
                    expected = true;
					break;
                case '$':
                    subParen = 0;
                    if (sc.chNext != '{') {
                        sc.SetState(SCE_TCL_SUBSTITUTION);
                    } 
                    else {
                        sc.SetState(SCE_TCL_OPERATOR);  // $
                        sc.Forward();  // {
                        sc.ForwardSetState(SCE_TCL_SUB_BRACE);
                        subBrace = true;
                    }
                    break;
                case '#':
                    if ((isspacechar(static_cast<unsigned char>(sc.chPrev))||
                            isoperator(static_cast<char>(sc.chPrev))) && IsADigit(sc.chNext,0x10))
                        sc.SetState(SCE_TCL_NUMBER);
                    break;
                case '-':
                    sc.SetState(IsADigit(sc.chNext)? SCE_TCL_NUMBER: SCE_TCL_MODIFIER);
                    break;
                default:
                    if (isoperator(static_cast<char>(sc.ch))) {
                        sc.SetState(SCE_TCL_OPERATOR);
                    }
				}
			}
		}
	}
	sc.Complete();
}

static const char * const tclWordListDesc[] = {
            "TCL Keywords",
            "TK Keywords",
            "iTCL Keywords",
            "tkCommands",
            "expand"
            "user1",
            "user2",
            "user3",
            "user4",
            0
        };

// this code supports folding in the colourizer
LexerModule lmTCL(SCLEX_TCL, ColouriseTCLDoc, "tcl", 0, tclWordListDesc);
Commit	Line	Data
b8193d80 RD	1	// Scintilla source code edit control
	2	/** @file LexTCL.cxx
	3	** Lexer for TCL language.
	4	**/
	5	// Copyright 1998-2001 by Andre Arpin <arpin@kingston.net>
	6	// The License.txt file describes the conditions under which this software may be distributed.
	7
	8	#include <stdlib.h>
	9	#include <string.h>
	10	#include <ctype.h>
	11	#include <stdarg.h>
	12	#include <stdio.h>
	13
	14	#include "Platform.h"
	15
	16	#include "PropSet.h"
	17	#include "Accessor.h"
	18	#include "StyleContext.h"
	19	#include "KeyWords.h"
	20	#include "Scintilla.h"
	21	#include "SciLexer.h"
	22
	23	// Extended to accept accented characters
	24	static inline bool IsAWordChar(int ch) {
	25	return ch >= 0x80 \|\|
	26	(isalnum(ch) \|\| ch == '_' \|\| ch ==':' \|\| ch=='.'); // : name space separator
	27	}
	28
	29	static inline bool IsAWordStart(int ch) {
	30	return ch >= 0x80 \|\| (ch ==':' \|\| isalpha(ch) \|\| ch == '_');
	31	}
	32
	33	static inline bool IsANumberChar(int ch) {
	34	// Not exactly following number definition (several dots are seen as OK, etc.)
	35	// but probably enough in most cases.
	36	return (ch < 0x80) &&
	37	(IsADigit(ch, 0x10) \|\| toupper(ch) == 'E' \|\|
	38	ch == '.' \|\| ch == '-' \|\| ch == '+');
	39	}
	40
	41	static void ColouriseTCLDoc(unsigned int startPos, int length, int , WordList *keywordlists[], Accessor &styler) {
	42	#define isComment(s) (s==SCE_TCL_COMMENT \|\| s==SCE_TCL_COMMENTLINE \|\| s==SCE_TCL_COMMENT_BOX \|\| s==SCE_TCL_BLOCK_COMMENT)
	43	bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
	44	bool commentLevel = false;
	45	bool subBrace = false; // substitution begin with a brace ${.....}
	46	enum tLineState {LS_DEFAULT, LS_OPEN_COMMENT, LS_OPEN_DOUBLE_QUOTE, LS_COMMENT_BOX, LS_MASK_STATE = 0xf,
	47	LS_COMMAND_EXPECTED = 16, LS_BRACE_ONLY = 32 } lineState = LS_DEFAULT;
	48	bool prevSlash = false;
	49	int currentLevel = 0;
	50	bool expected = 0;
	51	bool subParen = 0;
	52
	53	int currentLine = styler.GetLine(startPos);
	54	if (currentLine > 0)
	55	currentLine--;
	56	length += startPos - styler.LineStart(currentLine);
	57	// make sure lines overlap
	58	startPos = styler.LineStart(currentLine);
	59
	60	WordList &keywords = *keywordlists[0];
	61	WordList &keywords2 = *keywordlists[1];
	62	WordList &keywords3 = *keywordlists[2];
	63	WordList &keywords4 = *keywordlists[3];
	64	WordList &keywords5 = *keywordlists[4];
65	WordList &keywords6 = *keywordlists[5];
66	WordList &keywords7 = *keywordlists[6];
67	WordList &keywords8 = *keywordlists[7];
68	WordList &keywords9 = *keywordlists[8];
69
70	if (currentLine > 0) {
71	int ls = styler.GetLineState(currentLine - 1);
72	lineState = tLineState(ls & LS_MASK_STATE);
73	expected = LS_COMMAND_EXPECTED == tLineState(ls & LS_COMMAND_EXPECTED);
74	subBrace = LS_BRACE_ONLY == tLineState(ls & LS_BRACE_ONLY);
75	currentLevel = styler.LevelAt(currentLine - 1) >> 17;
76	commentLevel = (styler.LevelAt(currentLine - 1) >> 16) & 1;
77	} else
78	styler.SetLevel(0, SC_FOLDLEVELBASE \| SC_FOLDLEVELHEADERFLAG);
79	bool visibleChars = false;
80
81	int previousLevel = currentLevel;
82	StyleContext sc(startPos, length, SCE_TCL_DEFAULT, styler);
83	for (; ; sc.Forward()) {
84	next:
85	if (sc.ch=='\r' && sc.chNext == '\n') // only ignore \r on PC process on the mac
86	continue;
87	bool atEnd = !sc.More(); // make sure we coloured the last word
88	if (lineState != LS_DEFAULT) {
89	sc.SetState(SCE_TCL_DEFAULT);
90	if (lineState == LS_OPEN_COMMENT)
91	sc.SetState(SCE_TCL_COMMENTLINE);
92	else if (lineState == LS_OPEN_DOUBLE_QUOTE)
93	sc.SetState(SCE_TCL_IN_QUOTE);
94	else if (lineState == LS_COMMENT_BOX && (sc.ch == '#' \|\| (sc.ch == ' ' && sc.chNext=='#')))
95	sc.SetState(SCE_TCL_COMMENT_BOX);
96	lineState = LS_DEFAULT;
97	}
98	if (subBrace) { // ${ overrides every thing even \ except }
99	if (sc.ch == '}') {
100	subBrace = false;
101	sc.SetState(SCE_TCL_OPERATOR);
102	sc.ForwardSetState(SCE_TCL_DEFAULT);
103	goto next;
104	}
105	else
106	sc.SetState(SCE_TCL_SUB_BRACE);
107	if (!sc.atLineEnd)
108	continue;
109	} else if (sc.state == SCE_TCL_DEFAULT \|\| sc.state ==SCE_TCL_OPERATOR) {
110	expected &= isspacechar(static_cast<unsigned char>(sc.ch)) \|\| IsAWordStart(sc.ch) \|\| sc.ch =='#';
111	} else if (sc.state == SCE_TCL_SUBSTITUTION) {
112	switch(sc.ch) {
113	case '(':
114	subParen=true;
115	sc.SetState(SCE_TCL_OPERATOR);
116	sc.ForwardSetState(SCE_TCL_SUBSTITUTION);
117	continue;
118	case ')':
119	sc.SetState(SCE_TCL_OPERATOR);
120	subParen=false;
121	continue;
122	case '$':
123	continue;
124	case ',':
125	sc.SetState(SCE_TCL_OPERATOR);
126	if (subParen)
127	sc.ForwardSetState(SCE_TCL_SUBSTITUTION);
128	continue;
129	default :
130	// maybe spaces should be allowed ???
131	if (!IsAWordChar(sc.ch)) { // probably the code is wrong
132	sc.SetState(SCE_TCL_DEFAULT);
133	subParen = 0;
134	}
135	break;
136	}
137	} else if (isComment(sc.state)) {
138	} else if (!IsAWordChar(sc.ch)) {
139	if ((sc.state == SCE_TCL_IDENTIFIER && expected) \|\| sc.state == SCE_TCL_MODIFIER) {
140	char w[100];
141	char *s=w;
142	sc.GetCurrent(w, sizeof(w));
143	if (w[strlen(w)-1]=='\r')
144	w[strlen(w)-1]=0;
145	while(*s == ':') // ignore leading : like in ::set a 10
146	++s;
147	bool quote = sc.state == SCE_TCL_IN_QUOTE;
148	if (commentLevel \|\| expected) {
149	if (keywords.InList(s)) {
150	sc.ChangeState(quote ? SCE_TCL_WORD_IN_QUOTE : SCE_TCL_WORD);
151	} else if (keywords2.InList(s)) {
152	sc.ChangeState(quote ? SCE_TCL_WORD_IN_QUOTE : SCE_TCL_WORD2);
153	} else if (keywords3.InList(s)) {
154	sc.ChangeState(quote ? SCE_TCL_WORD_IN_QUOTE : SCE_TCL_WORD3);
155	} else if (keywords4.InList(s)) {
156	sc.ChangeState(quote ? SCE_TCL_WORD_IN_QUOTE : SCE_TCL_WORD4);
157	} else if (sc.GetRelative(-static_cast<int>(strlen(s))-1) == '{' &&
158	keywords5.InList(s) && sc.ch == '}') { // {keyword} exactly no spaces
159	sc.ChangeState(SCE_TCL_EXPAND);
160	}
161	if (keywords6.InList(s)) {
162	sc.ChangeState(SCE_TCL_WORD5);
163	} else if (keywords7.InList(s)) {
164	sc.ChangeState(SCE_TCL_WORD6);
165	} else if (keywords8.InList(s)) {
166	sc.ChangeState(SCE_TCL_WORD7);
167	} else if (keywords9.InList(s)) {
168	sc.ChangeState(SCE_TCL_WORD8);
169	}
170	}
171	expected = false;
172	sc.SetState(quote ? SCE_TCL_IN_QUOTE : SCE_TCL_DEFAULT);
173	} else if (sc.state == SCE_TCL_MODIFIER \|\| sc.state == SCE_TCL_IDENTIFIER) {
174	sc.SetState(SCE_TCL_DEFAULT);
175	}
176	}
177	if (atEnd)
178	break;
179	if (sc.atLineEnd) {
180	lineState = LS_DEFAULT;
181	currentLine = styler.GetLine(sc.currentPos);
182	if (foldComment && sc.state!=SCE_TCL_COMMENT && isComment(sc.state)) {
183	if (currentLevel == 0) {
184	++currentLevel;
185	commentLevel = true;
186	}
187	} else {
188	if (visibleChars && commentLevel) {
189	--currentLevel;
190	--previousLevel;
191	commentLevel = false;
192	}
193	}
194	int flag = 0;
195	if (!visibleChars)
196	flag = SC_FOLDLEVELWHITEFLAG;
197	if (currentLevel > previousLevel)
198	flag = SC_FOLDLEVELHEADERFLAG;
199	styler.SetLevel(currentLine, flag + previousLevel + SC_FOLDLEVELBASE + (currentLevel << 17) + (commentLevel << 16));
200
201	// Update the line state, so it can be seen by next line
202	if (sc.state == SCE_TCL_IN_QUOTE)
203	lineState = LS_OPEN_DOUBLE_QUOTE;
204	else {
205	if (prevSlash) {
206	if (isComment(sc.state))
207	lineState = LS_OPEN_COMMENT;
208	} else if (sc.state == SCE_TCL_COMMENT_BOX)
209	lineState = LS_COMMENT_BOX;
210	}
211	styler.SetLineState(currentLine,
212	(subBrace ? LS_BRACE_ONLY : 0) \|
213	(expected ? LS_COMMAND_EXPECTED : 0) \| lineState);
214	if (lineState == LS_COMMENT_BOX)
215	sc.ForwardSetState(SCE_TCL_COMMENT_BOX);
216	else if (lineState == LS_OPEN_DOUBLE_QUOTE)
217	sc.ForwardSetState(SCE_TCL_IN_QUOTE);
218	else
219	sc.ForwardSetState(SCE_TCL_DEFAULT);
220	prevSlash = false;
221	previousLevel = currentLevel;
222	goto next;
223	}
224
225	if (prevSlash) {
226	prevSlash = false;
227	if (sc.ch == '#' && IsANumberChar(sc.chNext))
228	sc.ForwardSetState(SCE_TCL_NUMBER);
229	continue;
230	}
231	prevSlash = sc.ch == '\\';
232	if (isComment(sc.state))
233	continue;
234	if (sc.atLineStart) {
235	visibleChars = false;
236	if (sc.state!=SCE_TCL_IN_QUOTE && !isComment(sc.state))
237	{
238	sc.SetState(SCE_TCL_DEFAULT);
239	expected = IsAWordStart(sc.ch)\|\| isspacechar(static_cast<unsigned char>(sc.ch));
240	}
241	}
242
243	switch (sc.state) {
244	case SCE_TCL_NUMBER:
245	if (!IsANumberChar(sc.ch))
246	sc.SetState(SCE_TCL_DEFAULT);
247	break;
248	case SCE_TCL_IN_QUOTE:
249	if (sc.ch == '"') {
250	sc.ForwardSetState(SCE_TCL_DEFAULT);
251	visibleChars = true; // necessary if a " is the first and only character on a line
252	goto next;
253	} else if (sc.ch == '[' \|\| sc.ch == ']' \|\| sc.ch == '$') {
254	sc.SetState(SCE_TCL_OPERATOR);
255	expected = sc.ch == '[';
256	sc.ForwardSetState(SCE_TCL_IN_QUOTE);
257	goto next;
258	}
259	continue;
260	case SCE_TCL_OPERATOR:
261	sc.SetState(SCE_TCL_DEFAULT);
262	break;
263	}
264
265	if (sc.ch == '#') {
266	if (visibleChars) {
267	if (sc.state != SCE_TCL_IN_QUOTE && expected)
268	sc.SetState(SCE_TCL_COMMENT);
269	} else {
270	sc.SetState(SCE_TCL_COMMENTLINE);
271	if (sc.chNext == '~')
272	sc.SetState(SCE_TCL_BLOCK_COMMENT);
273	if (sc.atLineStart && (sc.chNext == '#' \|\| sc.chNext == '-'))
274	sc.SetState(SCE_TCL_COMMENT_BOX);
275	}
276	}
277
278	if (!isspacechar(static_cast<unsigned char>(sc.ch))) {
279	visibleChars = true;
280	}
281
282	if (sc.ch == '\\') {
283	prevSlash = true;
284	continue;
285	}
286
287	// Determine if a new state should be entered.
288	if (sc.state == SCE_TCL_DEFAULT) {
289	if (IsAWordStart(sc.ch)) {
290	sc.SetState(SCE_TCL_IDENTIFIER);
291	} else if (IsADigit(sc.ch) && !IsAWordChar(sc.chPrev)) {
292	sc.SetState(SCE_TCL_NUMBER);
293	} else {
294	switch (sc.ch) {
295	case '\"':
296	sc.SetState(SCE_TCL_IN_QUOTE);
297	break;
298	case '{':
299	sc.SetState(SCE_TCL_OPERATOR);
300	expected = true;
301	++currentLevel;
302	break;
303	case '}':
304	sc.SetState(SCE_TCL_OPERATOR);
305	--currentLevel;
306	break;
307	case '[':
308	expected = true;
309	case ']':
310	case '(':
311	case ')':
312	sc.SetState(SCE_TCL_OPERATOR);
313	break;
314	case ';':
315	expected = true;
316	break;
317	case '$':
318	subParen = 0;
319	if (sc.chNext != '{') {
320	sc.SetState(SCE_TCL_SUBSTITUTION);
321	}
322	else {
323	sc.SetState(SCE_TCL_OPERATOR); // $
324	sc.Forward(); // {
325	sc.ForwardSetState(SCE_TCL_SUB_BRACE);
326	subBrace = true;
327	}
328	break;
329	case '#':
330	if ((isspacechar(static_cast<unsigned char>(sc.chPrev))\|\|
331	isoperator(static_cast<char>(sc.chPrev))) && IsADigit(sc.chNext,0x10))
332	sc.SetState(SCE_TCL_NUMBER);
333	break;
334	case '-':
335	sc.SetState(IsADigit(sc.chNext)? SCE_TCL_NUMBER: SCE_TCL_MODIFIER);
336	break;
337	default:
338	if (isoperator(static_cast<char>(sc.ch))) {
339	sc.SetState(SCE_TCL_OPERATOR);
340	}
341	}
342	}
343	}
344	}
345	sc.Complete();
346	}
347
348	static const char * const tclWordListDesc[] = {
349	"TCL Keywords",
350	"TK Keywords",
351	"iTCL Keywords",
352	"tkCommands",
353	"expand"
354	"user1",
355	"user2",
356	"user3",
357	"user4",
358	0
359	};
360
361	// this code supports folding in the colourizer
362	LexerModule lmTCL(SCLEX_TCL, ColouriseTCLDoc, "tcl", 0, tclWordListDesc);