]>
Commit | Line | Data |
---|---|---|
65ec6247 RD |
1 | // Scintilla source code edit control |
2 | /** @file LexCPP.cxx | |
3 | ** Lexer for C++, C, Java, and Javascript. | |
4 | **/ | |
5 | // Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org> | |
f6bcfd97 BP |
6 | // The License.txt file describes the conditions under which this software may be distributed. |
7 | ||
65ec6247 RD |
8 | #include <stdlib.h> |
9 | #include <string.h> | |
10 | #include <ctype.h> | |
11 | #include <stdio.h> | |
12 | #include <stdarg.h> | |
f6bcfd97 BP |
13 | |
14 | #include "Platform.h" | |
15 | ||
16 | #include "PropSet.h" | |
17 | #include "Accessor.h" | |
b8b0e402 | 18 | #include "StyleContext.h" |
f6bcfd97 BP |
19 | #include "KeyWords.h" |
20 | #include "Scintilla.h" | |
21 | #include "SciLexer.h" | |
22 | ||
b8b0e402 | 23 | static bool IsOKBeforeRE(const int ch) { |
65ec6247 RD |
24 | return (ch == '(') || (ch == '=') || (ch == ','); |
25 | } | |
26 | ||
b8b0e402 | 27 | inline bool IsAWordChar(const int ch) { |
65ec6247 RD |
28 | return (ch < 0x80) && (isalnum(ch) || ch == '.' || ch == '_'); |
29 | } | |
30 | ||
b8b0e402 | 31 | inline bool IsAWordStart(const int ch) { |
65ec6247 RD |
32 | return (ch < 0x80) && (isalnum(ch) || ch == '_'); |
33 | } | |
34 | ||
b8b0e402 RD |
35 | inline bool IsADoxygenChar(const int ch) { |
36 | return (islower(ch) || ch == '$' || ch == '@' || | |
37 | ch == '\\' || ch == '&' || ch == '<' || | |
38 | ch == '>' || ch == '#' || ch == '{' || | |
39 | ch == '}' || ch == '[' || ch == ']'); | |
65ec6247 RD |
40 | } |
41 | ||
b8b0e402 RD |
42 | inline bool IsStateComment(const int state) { |
43 | return ((state == SCE_C_COMMENT) || | |
44 | (state == SCE_C_COMMENTLINE) || | |
45 | (state == SCE_C_COMMENTDOC) || | |
46 | (state == SCE_C_COMMENTDOCKEYWORD) || | |
47 | (state == SCE_C_COMMENTDOCKEYWORDERROR)); | |
48 | } | |
65ec6247 | 49 | |
b8b0e402 RD |
50 | inline bool IsStateString(const int state) { |
51 | return ((state == SCE_C_STRING) || (state == SCE_C_VERBATIM)); | |
52 | } | |
65ec6247 RD |
53 | |
54 | static void ColouriseCppDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[], | |
55 | Accessor &styler) { | |
f6bcfd97 | 56 | |
f6bcfd97 | 57 | WordList &keywords = *keywordlists[0]; |
65ec6247 | 58 | WordList &keywords2 = *keywordlists[1]; |
b8b0e402 | 59 | WordList &keywords3 = *keywordlists[2]; |
65ec6247 | 60 | |
d134f170 | 61 | bool stylingWithinPreprocessor = styler.GetPropertyInt("styling.within.preprocessor"); |
f6bcfd97 | 62 | |
b8b0e402 RD |
63 | // Do not leak onto next line |
64 | if (initStyle == SCE_C_STRINGEOL) | |
65ec6247 RD |
65 | initStyle = SCE_C_DEFAULT; |
66 | ||
67 | int chPrevNonWhite = ' '; | |
d134f170 | 68 | int visibleChars = 0; |
b8b0e402 | 69 | int noDocChars = 0; |
f6bcfd97 | 70 | bool lastWordWasUUID = false; |
f6bcfd97 | 71 | |
b8b0e402 | 72 | StyleContext sc(startPos, length, initStyle, styler); |
f6bcfd97 | 73 | |
b8b0e402 RD |
74 | for (; sc.More(); sc.Forward()) { |
75 | ||
76 | // Handle line continuation generically. | |
77 | if (sc.ch == '\\') { | |
78 | if (sc.Match("\\\n")) { | |
79 | sc.Forward(); | |
80 | sc.Forward(); | |
81 | continue; | |
65ec6247 | 82 | } |
b8b0e402 RD |
83 | if (sc.Match("\\\r\n")) { |
84 | sc.Forward(); | |
85 | sc.Forward(); | |
86 | sc.Forward(); | |
87 | continue; | |
f6bcfd97 | 88 | } |
b8b0e402 RD |
89 | } |
90 | ||
91 | // Determine if the current state should terminate. | |
92 | if (sc.state == SCE_C_OPERATOR) { | |
93 | sc.SetState(SCE_C_DEFAULT); | |
94 | } else if (sc.state == SCE_C_NUMBER) { | |
95 | if (!IsAWordChar(sc.ch)) { | |
96 | sc.SetState(SCE_C_DEFAULT); | |
97 | } | |
98 | } else if (sc.state == SCE_C_IDENTIFIER) { | |
99 | if (!IsAWordChar(sc.ch) || (sc.ch == '.')) { | |
65ec6247 | 100 | char s[100]; |
b8b0e402 | 101 | sc.GetCurrent(s, sizeof(s)); |
65ec6247 RD |
102 | if (keywords.InList(s)) { |
103 | lastWordWasUUID = strcmp(s, "uuid") == 0; | |
b8b0e402 | 104 | sc.ChangeState(SCE_C_WORD); |
65ec6247 | 105 | } else if (keywords2.InList(s)) { |
b8b0e402 | 106 | sc.ChangeState(SCE_C_WORD2); |
f6bcfd97 | 107 | } |
b8b0e402 | 108 | sc.SetState(SCE_C_DEFAULT); |
f6bcfd97 | 109 | } |
b8b0e402 | 110 | } else if (sc.state == SCE_C_PREPROCESSOR) { |
65ec6247 | 111 | if (stylingWithinPreprocessor) { |
b8b0e402 RD |
112 | if (IsASpace(sc.ch)) { |
113 | sc.SetState(SCE_C_DEFAULT); | |
f6bcfd97 | 114 | } |
65ec6247 | 115 | } else { |
b8b0e402 RD |
116 | if (sc.atLineEnd) { |
117 | sc.SetState(SCE_C_DEFAULT); | |
f6bcfd97 | 118 | } |
65ec6247 | 119 | } |
b8b0e402 RD |
120 | } else if (sc.state == SCE_C_COMMENT) { |
121 | if (sc.Match('*', '/')) { | |
122 | sc.Forward(); | |
123 | sc.ForwardSetState(SCE_C_DEFAULT); | |
124 | } | |
125 | } else if (sc.state == SCE_C_COMMENTDOC) { | |
126 | if (sc.Match('*', '/')) { | |
127 | sc.Forward(); | |
128 | sc.ForwardSetState(SCE_C_DEFAULT); | |
129 | } else if ((sc.ch == '@' || sc.ch == '\\') && (noDocChars == 0)) { | |
130 | sc.SetState(SCE_C_COMMENTDOCKEYWORD); | |
131 | } else if (sc.atLineEnd) { | |
132 | noDocChars = 0; | |
133 | } else if (!isspace(sc.ch) && (sc.ch != '*')) { | |
134 | noDocChars++; | |
65ec6247 | 135 | } |
b8b0e402 RD |
136 | } else if (sc.state == SCE_C_COMMENTLINE || sc.state == SCE_C_COMMENTLINEDOC) { |
137 | if (sc.atLineEnd) { | |
138 | sc.SetState(SCE_C_DEFAULT); | |
139 | visibleChars = 0; | |
65ec6247 | 140 | } |
b8b0e402 RD |
141 | } else if (sc.state == SCE_C_COMMENTDOCKEYWORD) { |
142 | if (sc.Match('*', '/')) { | |
143 | sc.ChangeState(SCE_C_COMMENTDOCKEYWORDERROR); | |
144 | sc.Forward(); | |
145 | sc.ForwardSetState(SCE_C_DEFAULT); | |
146 | } else if (!IsADoxygenChar(sc.ch)) { | |
147 | char s[100]; | |
148 | sc.GetCurrent(s, sizeof(s)); | |
149 | if (!isspace(sc.ch) || !keywords3.InList(s+1)) { | |
150 | sc.ChangeState(SCE_C_COMMENTDOCKEYWORDERROR); | |
151 | } | |
152 | sc.SetState(SCE_C_COMMENTDOC); | |
65ec6247 | 153 | } |
b8b0e402 RD |
154 | } else if (sc.state == SCE_C_STRING) { |
155 | if (sc.ch == '\\') { | |
156 | if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') { | |
157 | sc.Forward(); | |
f6bcfd97 | 158 | } |
b8b0e402 RD |
159 | } else if (sc.ch == '\"') { |
160 | sc.ForwardSetState(SCE_C_DEFAULT); | |
161 | } else if (sc.atLineEnd) { | |
162 | sc.ChangeState(SCE_C_STRINGEOL); | |
163 | sc.ForwardSetState(SCE_C_DEFAULT); | |
164 | visibleChars = 0; | |
65ec6247 | 165 | } |
b8b0e402 RD |
166 | } else if (sc.state == SCE_C_CHARACTER) { |
167 | if (sc.atLineEnd) { | |
168 | sc.ChangeState(SCE_C_STRINGEOL); | |
169 | sc.ForwardSetState(SCE_C_DEFAULT); | |
170 | visibleChars = 0; | |
171 | } else if (sc.ch == '\\') { | |
172 | if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') { | |
173 | sc.Forward(); | |
f6bcfd97 | 174 | } |
b8b0e402 RD |
175 | } else if (sc.ch == '\'') { |
176 | sc.ForwardSetState(SCE_C_DEFAULT); | |
65ec6247 | 177 | } |
b8b0e402 RD |
178 | } else if (sc.state == SCE_C_REGEX) { |
179 | if (sc.ch == '\r' || sc.ch == '\n' || sc.ch == '/') { | |
180 | sc.ForwardSetState(SCE_C_DEFAULT); | |
181 | } else if (sc.ch == '\\') { | |
65ec6247 | 182 | // Gobble up the quoted character |
b8b0e402 RD |
183 | if (sc.chNext == '\\' || sc.chNext == '/') { |
184 | sc.Forward(); | |
d134f170 | 185 | } |
65ec6247 | 186 | } |
b8b0e402 RD |
187 | } else if (sc.state == SCE_C_VERBATIM) { |
188 | if (sc.ch == '\"') { | |
189 | if (sc.chNext == '\"') { | |
190 | sc.Forward(); | |
65ec6247 | 191 | } else { |
b8b0e402 | 192 | sc.ForwardSetState(SCE_C_DEFAULT); |
d134f170 | 193 | } |
65ec6247 | 194 | } |
b8b0e402 RD |
195 | } else if (sc.state == SCE_C_UUID) { |
196 | if (sc.ch == '\r' || sc.ch == '\n' || sc.ch == ')') { | |
197 | sc.SetState(SCE_C_DEFAULT); | |
65ec6247 RD |
198 | } |
199 | } | |
200 | ||
b8b0e402 RD |
201 | // Determine if a new state should be entered. |
202 | if (sc.state == SCE_C_DEFAULT) { | |
203 | if (sc.Match('@', '\"')) { | |
204 | sc.SetState(SCE_C_VERBATIM); | |
205 | sc.Forward(); | |
206 | } else if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) { | |
65ec6247 | 207 | if (lastWordWasUUID) { |
b8b0e402 | 208 | sc.SetState(SCE_C_UUID); |
65ec6247 RD |
209 | lastWordWasUUID = false; |
210 | } else { | |
b8b0e402 | 211 | sc.SetState(SCE_C_NUMBER); |
f6bcfd97 | 212 | } |
b8b0e402 | 213 | } else if (IsAWordStart(sc.ch) || (sc.ch == '@')) { |
65ec6247 | 214 | if (lastWordWasUUID) { |
b8b0e402 | 215 | sc.SetState(SCE_C_UUID); |
65ec6247 RD |
216 | lastWordWasUUID = false; |
217 | } else { | |
b8b0e402 | 218 | sc.SetState(SCE_C_IDENTIFIER); |
f6bcfd97 | 219 | } |
b8b0e402 RD |
220 | } else if (sc.Match('/', '*')) { |
221 | if (sc.Match("/**") || sc.Match("/*!")) { // Support of Qt/Doxygen doc. style | |
222 | noDocChars = 0; | |
223 | sc.SetState(SCE_C_COMMENTDOC); | |
224 | } else { | |
225 | sc.SetState(SCE_C_COMMENT); | |
226 | } | |
227 | sc.Forward(); // Eat the * so it isn't used for the end of the comment | |
228 | } else if (sc.Match('/', '/')) { | |
229 | if (sc.Match("///") || sc.Match("//!")) // Support of Qt/Doxygen doc. style | |
230 | sc.SetState(SCE_C_COMMENTLINEDOC); | |
65ec6247 | 231 | else |
b8b0e402 RD |
232 | sc.SetState(SCE_C_COMMENTLINE); |
233 | } else if (sc.ch == '/' && IsOKBeforeRE(chPrevNonWhite)) { | |
234 | sc.SetState(SCE_C_REGEX); | |
235 | } else if (sc.ch == '\"') { | |
236 | sc.SetState(SCE_C_STRING); | |
237 | } else if (sc.ch == '\'') { | |
238 | sc.SetState(SCE_C_CHARACTER); | |
239 | } else if (sc.ch == '#' && visibleChars == 0) { | |
65ec6247 | 240 | // Preprocessor commands are alone on their line |
b8b0e402 | 241 | sc.SetState(SCE_C_PREPROCESSOR); |
65ec6247 RD |
242 | // Skip whitespace between # and preprocessor word |
243 | do { | |
b8b0e402 RD |
244 | sc.Forward(); |
245 | } while ((sc.ch == ' ') && (sc.ch == '\t') && sc.More()); | |
246 | if (sc.atLineEnd) { | |
247 | sc.SetState(SCE_C_DEFAULT); | |
248 | } | |
249 | } else if (isoperator(static_cast<char>(sc.ch))) { | |
250 | sc.SetState(SCE_C_OPERATOR); | |
f6bcfd97 | 251 | } |
f6bcfd97 | 252 | } |
b8b0e402 RD |
253 | |
254 | if (sc.atLineEnd) { | |
65ec6247 RD |
255 | // Reset states to begining of colourise so no surprises |
256 | // if different sets of lines lexed. | |
257 | chPrevNonWhite = ' '; | |
258 | visibleChars = 0; | |
259 | lastWordWasUUID = false; | |
260 | } | |
b8b0e402 RD |
261 | if (!IsASpace(sc.ch)) { |
262 | chPrevNonWhite = sc.ch; | |
65ec6247 RD |
263 | visibleChars++; |
264 | } | |
f6bcfd97 | 265 | } |
b8b0e402 | 266 | sc.Complete(); |
65ec6247 | 267 | } |
f6bcfd97 | 268 | |
65ec6247 RD |
269 | static void FoldCppDoc(unsigned int startPos, int length, int initStyle, WordList *[], |
270 | Accessor &styler) { | |
271 | bool foldComment = styler.GetPropertyInt("fold.comment"); | |
272 | bool foldCompact = styler.GetPropertyInt("fold.compact", 1); | |
273 | unsigned int endPos = startPos + length; | |
274 | int visibleChars = 0; | |
275 | int lineCurrent = styler.GetLine(startPos); | |
276 | int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK; | |
277 | int levelCurrent = levelPrev; | |
278 | char chNext = styler[startPos]; | |
279 | int styleNext = styler.StyleAt(startPos); | |
280 | int style = initStyle; | |
281 | for (unsigned int i = startPos; i < endPos; i++) { | |
282 | char ch = chNext; | |
283 | chNext = styler.SafeGetCharAt(i + 1); | |
284 | int stylePrev = style; | |
285 | style = styleNext; | |
286 | styleNext = styler.StyleAt(i + 1); | |
287 | bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n'); | |
288 | if (foldComment && | |
289 | (style == SCE_C_COMMENT || style == SCE_C_COMMENTDOC)) { | |
290 | if (style != stylePrev) { | |
291 | levelCurrent++; | |
292 | } else if ((style != styleNext) && !atEOL) { | |
293 | // Comments don't end at end of line and the next character may be unstyled. | |
294 | levelCurrent--; | |
295 | } | |
296 | } | |
297 | if (style == SCE_C_OPERATOR) { | |
298 | if (ch == '{') { | |
299 | levelCurrent++; | |
300 | } else if (ch == '}') { | |
301 | levelCurrent--; | |
302 | } | |
303 | } | |
304 | if (atEOL) { | |
305 | int lev = levelPrev; | |
306 | if (visibleChars == 0 && foldCompact) | |
307 | lev |= SC_FOLDLEVELWHITEFLAG; | |
308 | if ((levelCurrent > levelPrev) && (visibleChars > 0)) | |
309 | lev |= SC_FOLDLEVELHEADERFLAG; | |
310 | if (lev != styler.LevelAt(lineCurrent)) { | |
311 | styler.SetLevel(lineCurrent, lev); | |
312 | } | |
313 | lineCurrent++; | |
314 | levelPrev = levelCurrent; | |
315 | visibleChars = 0; | |
316 | } | |
317 | if (!isspacechar(ch)) | |
318 | visibleChars++; | |
f6bcfd97 | 319 | } |
65ec6247 RD |
320 | // Fill in the real level of the next line, keeping the current flags as they will be filled in later |
321 | int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK; | |
322 | styler.SetLevel(lineCurrent, levelPrev | flagsNext); | |
f6bcfd97 BP |
323 | } |
324 | ||
65ec6247 RD |
325 | LexerModule lmCPP(SCLEX_CPP, ColouriseCppDoc, "cpp", FoldCppDoc); |
326 | LexerModule lmTCL(SCLEX_TCL, ColouriseCppDoc, "tcl", FoldCppDoc); |