/pnwtl/third_party/scintilla/lexers/LexErlang.cxx

https://code.google.com/p/pnotepad/ · C++ · 624 lines · 512 code · 70 blank · 42 comment · 247 complexity · 263bd19e699b31a6dda2cac6c3229b25 MD5 · raw file 

    

  1. // Scintilla source code edit control

    2. 

  2. // Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>

    3. 

  3. // The License.txt file describes the conditions under which this software may be distributed.

    4. 

  4. /** @file LexErlang.cxx

    5. 

  5.  ** Lexer for Erlang.

    6. 

  6.  ** Enhanced by Etienne 'Lenain' Girondel (lenaing@gmail.com)

    7. 

  7.  ** Originally wrote by Peter-Henry Mander,

    8. 

  8.  ** based on Matlab lexer by José Fonseca.

    9. 

  9.  **/

    10. 

  10. 

    11. 

  11. #include <stdlib.h>

    12. 

  12. #include <string.h>

    13. 

  13. #include <stdio.h>

    14. 

  14. #include <stdarg.h>

    15. 

  15. #include <assert.h>

    16. 

  16. #include <ctype.h>

    17. 

  17. 

    18. 

  18. #include "ILexer.h"

    19. 

  19. #include "Scintilla.h"

    20. 

  20. #include "SciLexer.h"

    21. 

  21. 

    22. 

  22. #include "PropSetSimple.h"

    23. 

  23. #include "WordList.h"

    24. 

  24. #include "LexAccessor.h"

    25. 

  25. #include "Accessor.h"

    26. 

  26. #include "StyleContext.h"

    27. 

  27. #include "CharacterSet.h"

    28. 

  28. #include "LexerModule.h"

    29. 

  29. 

    30. 

  30. #ifdef SCI_NAMESPACE

    31. 

  31. using namespace Scintilla;

    32. 

  32. #endif

    33. 

  33. 

    34. 

  34. static int is_radix(int radix, int ch) {

    35. 

  35. 	int digit;

    36. 

  36. 

    37. 

  37. 	if (36 < radix || 2 > radix)

    38. 

  38. 		return 0;

    39. 

  39. 

    40. 

  40. 	if (isdigit(ch)) {

    41. 

  41. 		digit = ch - '0';

    42. 

  42. 	} else if (isalnum(ch)) {

    43. 

  43. 		digit = toupper(ch) - 'A' + 10;

    44. 

  44. 	} else {

    45. 

  45. 		return 0;

    46. 

  46. 	}

    47. 

  47. 

    48. 

  48. 	return (digit < radix);

    49. 

  49. }

    50. 

  50. 

    51. 

  51. typedef enum {

    52. 

  52. 	STATE_NULL,

    53. 

  53. 	COMMENT,

    54. 

  54. 	COMMENT_FUNCTION,

    55. 

  55. 	COMMENT_MODULE,

    56. 

  56. 	COMMENT_DOC,

    57. 

  57. 	COMMENT_DOC_MACRO,

    58. 

  58. 	ATOM_UNQUOTED,

    59. 

  59. 	ATOM_QUOTED,

    60. 

  60. 	NODE_NAME_UNQUOTED,

    61. 

  61. 	NODE_NAME_QUOTED,

    62. 

  62. 	MACRO_START,

    63. 

  63. 	MACRO_UNQUOTED,

    64. 

  64. 	MACRO_QUOTED,

    65. 

  65. 	RECORD_START,

    66. 

  66. 	RECORD_UNQUOTED,

    67. 

  67. 	RECORD_QUOTED,

    68. 

  68. 	NUMERAL_START,

    69. 

  69. 	NUMERAL_BASE_VALUE,

    70. 

  70. 	NUMERAL_FLOAT,

    71. 

  71. 	NUMERAL_EXPONENT,

    72. 

  72. 	PREPROCESSOR

    73. 

  73. } atom_parse_state_t;

    74. 

  74. 

    75. 

  75. static inline bool IsAWordChar(const int ch) {

    76. 

  76. 	return (ch < 0x80) && (ch != ' ') && (isalnum(ch) || ch == '_');

    77. 

  77. }

    78. 

  78. 

    79. 

  79. static void ColouriseErlangDoc(unsigned int startPos, int length, int initStyle,

    80. 

  80. 								WordList *keywordlists[], Accessor &styler) {

    81. 

  81. 

    82. 

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

    83. 

  83. 	WordList &reservedWords = *keywordlists[0];

    84. 

  84. 	WordList &erlangBIFs = *keywordlists[1];

    85. 

  85. 	WordList &erlangPreproc = *keywordlists[2];

    86. 

  86. 	WordList &erlangModulesAtt = *keywordlists[3];

    87. 

  87. 	WordList &erlangDoc = *keywordlists[4];

    88. 

  88. 	WordList &erlangDocMacro = *keywordlists[5];

    89. 

  89. 	int radix_digits = 0;

    90. 

  90. 	int exponent_digits = 0;

    91. 

  91. 	atom_parse_state_t parse_state = STATE_NULL;

    92. 

  92. 	atom_parse_state_t old_parse_state = STATE_NULL;

    93. 

  93. 	bool to_late_to_comment = false;

    94. 

  94. 	char cur[100];

    95. 

  95. 	int old_style = SCE_ERLANG_DEFAULT;

    96. 

  96. 

    97. 

  97. 	styler.StartAt(startPos);

    98. 

  98. 

    99. 

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

    100. 

  100. 		int style = SCE_ERLANG_DEFAULT;

    101. 

  101. 		if (STATE_NULL != parse_state) {

    102. 

  102. 

    103. 

  103. 			switch (parse_state) {

    104. 

  104. 

    105. 

  105. 				case STATE_NULL : sc.SetState(SCE_ERLANG_DEFAULT); break;

    106. 

  106. 

    107. 

  107. 			/* COMMENTS ------------------------------------------------------*/

    108. 

  108. 				case COMMENT : {

    109. 

  109. 					if (sc.ch != '%') {

    110. 

  110. 						to_late_to_comment = true;

    111. 

  111. 					} else if (!to_late_to_comment && sc.ch == '%') {

    112. 

  112. 						// Switch to comment level 2 (Function)

    113. 

  113. 						sc.ChangeState(SCE_ERLANG_COMMENT_FUNCTION);

    114. 

  114. 						old_style = SCE_ERLANG_COMMENT_FUNCTION;

    115. 

  115. 						parse_state = COMMENT_FUNCTION;

    116. 

  116. 						sc.Forward();

    117. 

  117. 					}

    118. 

  118. 				}

    119. 

  119. 				// V--- Falling through!

    120. 

  120. 				case COMMENT_FUNCTION : {

    121. 

  121. 					if (sc.ch != '%') {

    122. 

  122. 						to_late_to_comment = true;

    123. 

  123. 					} else if (!to_late_to_comment && sc.ch == '%') {

    124. 

  124. 						// Switch to comment level 3 (Module)

    125. 

  125. 						sc.ChangeState(SCE_ERLANG_COMMENT_MODULE);

    126. 

  126. 						old_style = SCE_ERLANG_COMMENT_MODULE;

    127. 

  127. 						parse_state = COMMENT_MODULE;

    128. 

  128. 						sc.Forward();

    129. 

  129. 					}

    130. 

  130. 				}

    131. 

  131. 				// V--- Falling through!

    132. 

  132. 				case COMMENT_MODULE : {

    133. 

  133. 					if (parse_state != COMMENT) {

    134. 

  134. 						// Search for comment documentation

    135. 

  135. 						if (sc.chNext == '@') {

    136. 

  136. 							old_parse_state = parse_state;

    137. 

  137. 							parse_state = ('{' == sc.ch)

    138. 

  138. 											? COMMENT_DOC_MACRO

    139. 

  139. 											: COMMENT_DOC;

    140. 

  140. 							sc.ForwardSetState(sc.state);

    141. 

  141. 						}

    142. 

  142. 					}

    143. 

  143. 

    144. 

  144. 					// All comments types fall here.

    145. 

  145. 					if (sc.atLineEnd) {

    146. 

  146. 						to_late_to_comment = false;

    147. 

  147. 						sc.SetState(SCE_ERLANG_DEFAULT);

    148. 

  148. 						parse_state = STATE_NULL;

    149. 

  149. 					}

    150. 

  150. 				} break;

    151. 

  151. 

    152. 

  152. 				case COMMENT_DOC :

    153. 

  153. 				// V--- Falling through!

    154. 

  154. 				case COMMENT_DOC_MACRO : {

    155. 

  155. 

    156. 

  156. 					if (!isalnum(sc.ch)) {

    157. 

  157. 						// Try to match documentation comment

    158. 

  158. 						sc.GetCurrent(cur, sizeof(cur));

    159. 

  159. 

    160. 

  160. 						if (parse_state == COMMENT_DOC_MACRO

    161. 

  161. 							&& erlangDocMacro.InList(cur)) {

    162. 

  162. 								sc.ChangeState(SCE_ERLANG_COMMENT_DOC_MACRO);

    163. 

  163. 								while (sc.ch != '}' && !sc.atLineEnd)

    164. 

  164. 									sc.Forward();

    165. 

  165. 						} else if (erlangDoc.InList(cur)) {

    166. 

  166. 							sc.ChangeState(SCE_ERLANG_COMMENT_DOC);

    167. 

  167. 						} else {

    168. 

  168. 							sc.ChangeState(old_style);

    169. 

  169. 						}

    170. 

  170. 

    171. 

  171. 						// Switch back to old state

    172. 

  172. 						sc.SetState(old_style);

    173. 

  173. 						parse_state = old_parse_state;

    174. 

  174. 					}

    175. 

  175. 

    176. 

  176. 					if (sc.atLineEnd) {

    177. 

  177. 						to_late_to_comment = false;

    178. 

  178. 						sc.ChangeState(old_style);

    179. 

  179. 						sc.SetState(SCE_ERLANG_DEFAULT);

    180. 

  180. 						parse_state = STATE_NULL;

    181. 

  181. 					}

    182. 

  182. 				} break;

    183. 

  183. 

    184. 

  184. 			/* -------------------------------------------------------------- */

    185. 

  185. 			/* Atoms ---------------------------------------------------------*/

    186. 

  186. 				case ATOM_UNQUOTED : {

    187. 

  187. 					if ('@' == sc.ch){

    188. 

  188. 						parse_state = NODE_NAME_UNQUOTED;

    189. 

  189. 					} else if (sc.ch == ':') {

    190. 

  190. 						// Searching for module name

    191. 

  191. 						if (sc.chNext == ' ') {

    192. 

  192. 							// error

    193. 

  193. 							sc.ChangeState(SCE_ERLANG_UNKNOWN);

    194. 

  194. 							parse_state = STATE_NULL;

    195. 

  195. 						} else {

    196. 

  196. 							sc.Forward();

    197. 

  197. 							if (isalnum(sc.ch))  {

    198. 

  198. 								sc.GetCurrent(cur, sizeof(cur));

    199. 

  199. 								sc.ChangeState(SCE_ERLANG_MODULES);

    200. 

  200. 								sc.SetState(SCE_ERLANG_MODULES);

    201. 

  201. 							}

    202. 

  202. 						}

    203. 

  203. 					} else if (!IsAWordChar(sc.ch)) {

    204. 

  204. 

    205. 

  205. 						sc.GetCurrent(cur, sizeof(cur));

    206. 

  206. 						if (reservedWords.InList(cur)) {

    207. 

  207. 							style = SCE_ERLANG_KEYWORD;

    208. 

  208. 						} else if (erlangBIFs.InList(cur)

    209. 

  209. 									&& strcmp(cur,"erlang:")){

    210. 

  210. 							style = SCE_ERLANG_BIFS;

    211. 

  211. 						} else if (sc.ch == '(' || '/' == sc.ch){

    212. 

  212. 							style = SCE_ERLANG_FUNCTION_NAME;

    213. 

  213. 						} else {

    214. 

  214. 							style = SCE_ERLANG_ATOM;

    215. 

  215. 						}

    216. 

  216. 

    217. 

  217. 						sc.ChangeState(style);

    218. 

  218. 						sc.SetState(SCE_ERLANG_DEFAULT);

    219. 

  219. 						parse_state = STATE_NULL;

    220. 

  220. 					}

    221. 

  221. 

    222. 

  222. 				} break;

    223. 

  223. 

    224. 

  224. 				case ATOM_QUOTED : {

    225. 

  225. 					if ( '@' == sc.ch ){

    226. 

  226. 						parse_state = NODE_NAME_QUOTED;

    227. 

  227. 					} else if ('\'' == sc.ch && '\\' != sc.chPrev) {

    228. 

  228. 						sc.ChangeState(SCE_ERLANG_ATOM);

    229. 

  229. 						sc.ForwardSetState(SCE_ERLANG_DEFAULT);

    230. 

  230. 						parse_state = STATE_NULL;

    231. 

  231. 					}

    232. 

  232. 				} break;

    233. 

  233. 

    234. 

  234. 			/* -------------------------------------------------------------- */

    235. 

  235. 			/* Node names ----------------------------------------------------*/

    236. 

  236. 				case NODE_NAME_UNQUOTED : {

    237. 

  237. 					if ('@' == sc.ch) {

    238. 

  238. 						sc.SetState(SCE_ERLANG_DEFAULT);

    239. 

  239. 						parse_state = STATE_NULL;

    240. 

  240. 					} else if (!IsAWordChar(sc.ch)) {

    241. 

  241. 						sc.ChangeState(SCE_ERLANG_NODE_NAME);

    242. 

  242. 						sc.SetState(SCE_ERLANG_DEFAULT);

    243. 

  243. 						parse_state = STATE_NULL;

    244. 

  244. 					}

    245. 

  245. 				} break;

    246. 

  246. 

    247. 

  247. 				case NODE_NAME_QUOTED : {

    248. 

  248. 					if ('@' == sc.ch) {

    249. 

  249. 						sc.SetState(SCE_ERLANG_DEFAULT);

    250. 

  250. 						parse_state = STATE_NULL;

    251. 

  251. 					} else if ('\'' == sc.ch && '\\' != sc.chPrev) {

    252. 

  252. 						sc.ChangeState(SCE_ERLANG_NODE_NAME_QUOTED);

    253. 

  253. 						sc.ForwardSetState(SCE_ERLANG_DEFAULT);

    254. 

  254. 						parse_state = STATE_NULL;

    255. 

  255. 					}

    256. 

  256. 				} break;

    257. 

  257. 

    258. 

  258. 			/* -------------------------------------------------------------- */

    259. 

  259. 			/* Records -------------------------------------------------------*/

    260. 

  260. 				case RECORD_START : {

    261. 

  261. 					if ('\'' == sc.ch) {

    262. 

  262. 						parse_state = RECORD_QUOTED;

    263. 

  263. 					} else if (isalpha(sc.ch) && islower(sc.ch)) {

    264. 

  264. 						parse_state = RECORD_UNQUOTED;

    265. 

  265. 					} else { // error

    266. 

  266. 						sc.SetState(SCE_ERLANG_DEFAULT);

    267. 

  267. 						parse_state = STATE_NULL;

    268. 

  268. 					}

    269. 

  269. 				} break;

    270. 

  270. 

    271. 

  271. 				case RECORD_UNQUOTED : {

    272. 

  272. 					if (!IsAWordChar(sc.ch)) {

    273. 

  273. 						sc.ChangeState(SCE_ERLANG_RECORD);

    274. 

  274. 						sc.SetState(SCE_ERLANG_DEFAULT);

    275. 

  275. 						parse_state = STATE_NULL;

    276. 

  276. 					}

    277. 

  277. 				} break;

    278. 

  278. 

    279. 

  279. 				case RECORD_QUOTED : {

    280. 

  280. 					if ('\'' == sc.ch && '\\' != sc.chPrev) {

    281. 

  281. 						sc.ChangeState(SCE_ERLANG_RECORD_QUOTED);

    282. 

  282. 						sc.ForwardSetState(SCE_ERLANG_DEFAULT);

    283. 

  283. 						parse_state = STATE_NULL;

    284. 

  284. 					}

    285. 

  285. 				} break;

    286. 

  286. 

    287. 

  287. 			/* -------------------------------------------------------------- */

    288. 

  288. 			/* Macros --------------------------------------------------------*/

    289. 

  289. 				case MACRO_START : {

    290. 

  290. 					if ('\'' == sc.ch) {

    291. 

  291. 						parse_state = MACRO_QUOTED;

    292. 

  292. 					} else if (isalpha(sc.ch)) {

    293. 

  293. 						parse_state = MACRO_UNQUOTED;

    294. 

  294. 					} else { // error

    295. 

  295. 						sc.SetState(SCE_ERLANG_DEFAULT);

    296. 

  296. 						parse_state = STATE_NULL;

    297. 

  297. 					}

    298. 

  298. 				} break;

    299. 

  299. 

    300. 

  300. 				case MACRO_UNQUOTED : {

    301. 

  301. 					if (!IsAWordChar(sc.ch)) {

    302. 

  302. 						sc.ChangeState(SCE_ERLANG_MACRO);

    303. 

  303. 						sc.SetState(SCE_ERLANG_DEFAULT);

    304. 

  304. 						parse_state = STATE_NULL;

    305. 

  305. 					}

    306. 

  306. 				} break;

    307. 

  307. 

    308. 

  308. 				case MACRO_QUOTED : {

    309. 

  309. 					if ('\'' == sc.ch && '\\' != sc.chPrev) {

    310. 

  310. 						sc.ChangeState(SCE_ERLANG_MACRO_QUOTED);

    311. 

  311. 						sc.ForwardSetState(SCE_ERLANG_DEFAULT);

    312. 

  312. 						parse_state = STATE_NULL;

    313. 

  313. 					}

    314. 

  314. 				} break;

    315. 

  315. 

    316. 

  316. 			/* -------------------------------------------------------------- */

    317. 

  317. 			/* Numerics ------------------------------------------------------*/

    318. 

  318. 			/* Simple integer */

    319. 

  319. 				case NUMERAL_START : {

    320. 

  320. 					if (isdigit(sc.ch)) {

    321. 

  321. 						radix_digits *= 10;

    322. 

  322. 						radix_digits += sc.ch - '0'; // Assuming ASCII here!

    323. 

  323. 					} else if ('#' == sc.ch) {

    324. 

  324. 						if (2 > radix_digits || 36 < radix_digits) {

    325. 

  325. 							sc.SetState(SCE_ERLANG_DEFAULT);

    326. 

  326. 							parse_state = STATE_NULL;

    327. 

  327. 						} else {

    328. 

  328. 							parse_state = NUMERAL_BASE_VALUE;

    329. 

  329. 						}

    330. 

  330. 					} else if ('.' == sc.ch && isdigit(sc.chNext)) {

    331. 

  331. 						radix_digits = 0;

    332. 

  332. 						parse_state = NUMERAL_FLOAT;

    333. 

  333. 					} else if ('e' == sc.ch || 'E' == sc.ch) {

    334. 

  334. 						exponent_digits = 0;

    335. 

  335. 						parse_state = NUMERAL_EXPONENT;

    336. 

  336. 					} else {

    337. 

  337. 						radix_digits = 0;

    338. 

  338. 						sc.ChangeState(SCE_ERLANG_NUMBER);

    339. 

  339. 						sc.SetState(SCE_ERLANG_DEFAULT);

    340. 

  340. 						parse_state = STATE_NULL;

    341. 

  341. 					}

    342. 

  342. 				} break;

    343. 

  343. 

    344. 

  344. 			/* Integer in other base than 10 (x#yyy) */

    345. 

  345. 				case NUMERAL_BASE_VALUE : {

    346. 

  346. 					if (!is_radix(radix_digits,sc.ch)) {

    347. 

  347. 						radix_digits = 0;

    348. 

  348. 

    349. 

  349. 						if (!isalnum(sc.ch))

    350. 

  350. 							sc.ChangeState(SCE_ERLANG_NUMBER);

    351. 

  351. 

    352. 

  352. 						sc.SetState(SCE_ERLANG_DEFAULT);

    353. 

  353. 						parse_state = STATE_NULL;

    354. 

  354. 					}

    355. 

  355. 				} break;

    356. 

  356. 

    357. 

  357. 			/* Float (x.yyy) */

    358. 

  358. 				case NUMERAL_FLOAT : {

    359. 

  359. 					if ('e' == sc.ch || 'E' == sc.ch) {

    360. 

  360. 						exponent_digits = 0;

    361. 

  361. 						parse_state = NUMERAL_EXPONENT;

    362. 

  362. 					} else if (!isdigit(sc.ch)) {

    363. 

  363. 						sc.ChangeState(SCE_ERLANG_NUMBER);

    364. 

  364. 						sc.SetState(SCE_ERLANG_DEFAULT);

    365. 

  365. 						parse_state = STATE_NULL;

    366. 

  366. 					}

    367. 

  367. 				} break;

    368. 

  368. 

    369. 

  369. 			/* Exponent, either integer or float (xEyy, x.yyEzzz) */

    370. 

  370. 				case NUMERAL_EXPONENT : {

    371. 

  371. 					if (('-' == sc.ch || '+' == sc.ch)

    372. 

  372. 							&& (isdigit(sc.chNext))) {

    373. 

  373. 						sc.Forward();

    374. 

  374. 					} else if (!isdigit(sc.ch)) {

    375. 

  375. 						if (0 < exponent_digits)

    376. 

  376. 							sc.ChangeState(SCE_ERLANG_NUMBER);

    377. 

  377. 						sc.SetState(SCE_ERLANG_DEFAULT);

    378. 

  378. 						parse_state = STATE_NULL;

    379. 

  379. 					} else {

    380. 

  380. 						++exponent_digits;

    381. 

  381. 					}

    382. 

  382. 				} break;

    383. 

  383. 

    384. 

  384. 			/* -------------------------------------------------------------- */

    385. 

  385. 			/* Preprocessor --------------------------------------------------*/

    386. 

  386. 				case PREPROCESSOR : {

    387. 

  387. 					if (!IsAWordChar(sc.ch)) {

    388. 

  388. 

    389. 

  389. 						sc.GetCurrent(cur, sizeof(cur));

    390. 

  390. 						if (erlangPreproc.InList(cur)) {

    391. 

  391. 							style = SCE_ERLANG_PREPROC;

    392. 

  392. 						} else if (erlangModulesAtt.InList(cur)) {

    393. 

  393. 							style = SCE_ERLANG_MODULES_ATT;

    394. 

  394. 						}

    395. 

  395. 

    396. 

  396. 						sc.ChangeState(style);

    397. 

  397. 						sc.SetState(SCE_ERLANG_DEFAULT);

    398. 

  398. 						parse_state = STATE_NULL;

    399. 

  399. 					}

    400. 

  400. 				} break;

    401. 

  401. 

    402. 

  402. 			}

    403. 

  403. 

    404. 

  404. 		} /* End of : STATE_NULL != parse_state */

    405. 

  405. 		else

    406. 

  406. 		{

    407. 

  407. 			switch (sc.state) {

    408. 

  408. 				case SCE_ERLANG_VARIABLE : {

    409. 

  409. 					if (!IsAWordChar(sc.ch))

    410. 

  410. 						sc.SetState(SCE_ERLANG_DEFAULT);

    411. 

  411. 				} break;

    412. 

  412. 				case SCE_ERLANG_STRING : {

    413. 

  413. 					 if (sc.ch == '\"' && sc.chPrev != '\\')

    414. 

  414. 						sc.ForwardSetState(SCE_ERLANG_DEFAULT);

    415. 

  415. 				} break;

    416. 

  416. 				case SCE_ERLANG_COMMENT : {

    417. 

  417. 					 if (sc.atLineEnd)

    418. 

  418. 						sc.SetState(SCE_ERLANG_DEFAULT);

    419. 

  419. 				} break;

    420. 

  420. 				case SCE_ERLANG_CHARACTER : {

    421. 

  421. 					if (sc.chPrev == '\\') {

    422. 

  422. 						sc.ForwardSetState(SCE_ERLANG_DEFAULT);

    423. 

  423. 					} else if (sc.ch != '\\') {

    424. 

  424. 						sc.ForwardSetState(SCE_ERLANG_DEFAULT);

    425. 

  425. 					}

    426. 

  426. 				} break;

    427. 

  427. 				case SCE_ERLANG_OPERATOR : {

    428. 

  428. 					if (sc.chPrev == '.') {

    429. 

  429. 						if (sc.ch == '*' || sc.ch == '/' || sc.ch == '\\'

    430. 

  430. 							|| sc.ch == '^') {

    431. 

  431. 							sc.ForwardSetState(SCE_ERLANG_DEFAULT);

    432. 

  432. 						} else if (sc.ch == '\'') {

    433. 

  433. 							sc.ForwardSetState(SCE_ERLANG_DEFAULT);

    434. 

  434. 						} else {

    435. 

  435. 							sc.SetState(SCE_ERLANG_DEFAULT);

    436. 

  436. 						}

    437. 

  437. 					} else {

    438. 

  438. 						sc.SetState(SCE_ERLANG_DEFAULT);

    439. 

  439. 					}

    440. 

  440. 				} break;

    441. 

  441. 			}

    442. 

  442. 		}

    443. 

  443. 

    444. 

  444. 		if (sc.state == SCE_ERLANG_DEFAULT) {

    445. 

  445. 			bool no_new_state = false;

    446. 

  446. 

    447. 

  447. 			switch (sc.ch) {

    448. 

  448. 				case '\"' : sc.SetState(SCE_ERLANG_STRING); break;

    449. 

  449. 				case '$' : sc.SetState(SCE_ERLANG_CHARACTER); break;

    450. 

  450. 				case '%' : {

    451. 

  451. 					parse_state = COMMENT;

    452. 

  452. 					sc.SetState(SCE_ERLANG_COMMENT);

    453. 

  453. 				} break;

    454. 

  454. 				case '#' : {

    455. 

  455. 					parse_state = RECORD_START;

    456. 

  456. 					sc.SetState(SCE_ERLANG_UNKNOWN);

    457. 

  457. 				} break;

    458. 

  458. 				case '?' : {

    459. 

  459. 					parse_state = MACRO_START;

    460. 

  460. 					sc.SetState(SCE_ERLANG_UNKNOWN);

    461. 

  461. 				} break;

    462. 

  462. 				case '\'' : {

    463. 

  463. 					parse_state = ATOM_QUOTED;

    464. 

  464. 					sc.SetState(SCE_ERLANG_UNKNOWN);

    465. 

  465. 				} break;

    466. 

  466. 				case '+' :

    467. 

  467. 				case '-' : {

    468. 

  468. 					if (IsADigit(sc.chNext)) {

    469. 

  469. 						parse_state = NUMERAL_START;

    470. 

  470. 						radix_digits = 0;

    471. 

  471. 						sc.SetState(SCE_ERLANG_UNKNOWN);

    472. 

  472. 					} else if (sc.ch != '+') {

    473. 

  473. 						parse_state = PREPROCESSOR;

    474. 

  474. 						sc.SetState(SCE_ERLANG_UNKNOWN);

    475. 

  475. 					}

    476. 

  476. 				} break;

    477. 

  477. 				default : no_new_state = true;

    478. 

  478. 			}

    479. 

  479. 

    480. 

  480. 			if (no_new_state) {

    481. 

  481. 				if (isdigit(sc.ch)) {

    482. 

  482. 					parse_state = NUMERAL_START;

    483. 

  483. 					radix_digits = sc.ch - '0';

    484. 

  484. 					sc.SetState(SCE_ERLANG_UNKNOWN);

    485. 

  485. 				} else if (isupper(sc.ch) || '_' == sc.ch) {

    486. 

  486. 					sc.SetState(SCE_ERLANG_VARIABLE);

    487. 

  487. 				} else if (isalpha(sc.ch)) {

    488. 

  488. 					parse_state = ATOM_UNQUOTED;

    489. 

  489. 					sc.SetState(SCE_ERLANG_UNKNOWN);

    490. 

  490. 				} else if (isoperator(static_cast<char>(sc.ch))

    491. 

  491. 							|| sc.ch == '\\') {

    492. 

  492. 					sc.SetState(SCE_ERLANG_OPERATOR);

    493. 

  493. 				}

    494. 

  494. 			}

    495. 

  495. 		}

    496. 

  496. 

    497. 

  497. 	}

    498. 

  498. 	sc.Complete();

    499. 

  499. }

    500. 

  500. 

    501. 

  501. static int ClassifyErlangFoldPoint(

    502. 

  502. 	Accessor &styler,

    503. 

  503. 	int styleNext,

    504. 

  504. 	int keyword_start

    505. 

  505. ) {

    506. 

  506. 	int lev = 0;

    507. 

  507. 	if (styler.Match(keyword_start,"case")

    508. 

  508. 		|| (

    509. 

  509. 			styler.Match(keyword_start,"fun")

    510. 

  510. 			&& (SCE_ERLANG_FUNCTION_NAME != styleNext)

    511. 

  511. 			)

    512. 

  512. 		|| styler.Match(keyword_start,"if")

    513. 

  513. 		|| styler.Match(keyword_start,"query")

    514. 

  514. 		|| styler.Match(keyword_start,"receive")

    515. 

  515. 	) {

    516. 

  516. 		++lev;

    517. 

  517. 	} else if (styler.Match(keyword_start,"end")) {

    518. 

  518. 		--lev;

    519. 

  519. 	}

    520. 

  520. 

    521. 

  521. 	return lev;

    522. 

  522. }

    523. 

  523. 

    524. 

  524. static void FoldErlangDoc(

    525. 

  525. 	unsigned int startPos, int length, int initStyle,

    526. 

  526. 	WordList** /*keywordlists*/, Accessor &styler

    527. 

  527. ) {

    528. 

  528. 	unsigned int endPos = startPos + length;

    529. 

  529. 	int currentLine = styler.GetLine(startPos);

    530. 

  530. 	int lev;

    531. 

  531. 	int previousLevel = styler.LevelAt(currentLine) & SC_FOLDLEVELNUMBERMASK;

    532. 

  532. 	int currentLevel = previousLevel;

    533. 

  533. 	int styleNext = styler.StyleAt(startPos);

    534. 

  534. 	int style = initStyle;

    535. 

  535. 	int stylePrev;

    536. 

  536. 	int keyword_start = 0;

    537. 

  537. 	char ch;

    538. 

  538. 	char chNext = styler.SafeGetCharAt(startPos);

    539. 

  539. 	bool atEOL;

    540. 

  540. 

    541. 

  541. 	for (unsigned int i = startPos; i < endPos; i++) {

    542. 

  542. 		ch = chNext;

    543. 

  543. 		chNext = styler.SafeGetCharAt(i + 1);

    544. 

  544. 

    545. 

  545. 		// Get styles

    546. 

  546. 		stylePrev = style;

    547. 

  547. 		style = styleNext;

    548. 

  548. 		styleNext = styler.StyleAt(i + 1);

    549. 

  549. 		atEOL = ((ch == '\r') && (chNext != '\n')) || (ch == '\n');

    550. 

  550. 

    551. 

  551. 		if (stylePrev != SCE_ERLANG_KEYWORD

    552. 

  552. 			&& style == SCE_ERLANG_KEYWORD) {

    553. 

  553. 			keyword_start = i;

    554. 

  554. 		}

    555. 

  555. 

    556. 

  556. 		// Fold on keywords

    557. 

  557. 		if (stylePrev == SCE_ERLANG_KEYWORD

    558. 

  558. 			&& style != SCE_ERLANG_KEYWORD

    559. 

  559. 			&& style != SCE_ERLANG_ATOM

    560. 

  560. 		) {

    561. 

  561. 			currentLevel += ClassifyErlangFoldPoint(styler,

    562. 

  562. 													styleNext,

    563. 

  563. 													keyword_start);

    564. 

  564. 		}

    565. 

  565. 

    566. 

  566. 		// Fold on comments

    567. 

  567. 		if (style == SCE_ERLANG_COMMENT

    568. 

  568. 			|| style == SCE_ERLANG_COMMENT_MODULE

    569. 

  569. 			|| style == SCE_ERLANG_COMMENT_FUNCTION) {

    570. 

  570. 

    571. 

  571. 			if (ch == '%' && chNext == '{') {

    572. 

  572. 				currentLevel++;

    573. 

  573. 			} else if (ch == '%' && chNext == '}') {

    574. 

  574. 				currentLevel--;

    575. 

  575. 			}

    576. 

  576. 		}

    577. 

  577. 

    578. 

  578. 		// Fold on braces

    579. 

  579. 		if (style == SCE_ERLANG_OPERATOR) {

    580. 

  580. 			if (ch == '{' || ch == '(' || ch == '[') {

    581. 

  581. 				currentLevel++;

    582. 

  582. 			} else if (ch == '}' || ch == ')' || ch == ']') {

    583. 

  583. 				currentLevel--;

    584. 

  584. 			}

    585. 

  585. 		}

    586. 

  586. 

    587. 

  587. 

    588. 

  588. 		if (atEOL) {

    589. 

  589. 			lev = previousLevel;

    590. 

  590. 

    591. 

  591. 			if (currentLevel > previousLevel)

    592. 

  592. 				lev |= SC_FOLDLEVELHEADERFLAG;

    593. 

  593. 

    594. 

  594. 			if (lev != styler.LevelAt(currentLine))

    595. 

  595. 				styler.SetLevel(currentLine, lev);

    596. 

  596. 

    597. 

  597. 			currentLine++;

    598. 

  598. 			previousLevel = currentLevel;

    599. 

  599. 		}

    600. 

  600. 

    601. 

  601. 	}

    602. 

  602. 

    603. 

  603. 	// Fill in the real level of the next line, keeping the current flags as they will be filled in later

    604. 

  604. 	styler.SetLevel(currentLine,

    605. 

  605. 					previousLevel

    606. 

  606. 					| (styler.LevelAt(currentLine) & ~SC_FOLDLEVELNUMBERMASK));

    607. 

  607. }

    608. 

  608. 

    609. 

  609. static const char * const erlangWordListDesc[] = {

    610. 

  610. 	"Erlang Reserved words",

    611. 

  611. 	"Erlang BIFs",

    612. 

  612. 	"Erlang Preprocessor",

    613. 

  613. 	"Erlang Module Attributes",

    614. 

  614. 	"Erlang Documentation",

    615. 

  615. 	"Erlang Documentation Macro",

    616. 

  616. 	0

    617. 

  617. };

    618. 

  618. 

    619. 

  619. LexerModule lmErlang(

    620. 

  620. 	SCLEX_ERLANG,

    621. 

  621. 	ColouriseErlangDoc,

    622. 

  622. 	"erlang",

    623. 

  623. 	FoldErlangDoc,

    624. 

  624. 	erlangWordListDesc);
    625.