grammar.c 54 KB

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  1. #include "__grammar.h"
  2. ParserMessage *makeParserMessage(char *file_dir) {
  3. ParserMessage *tmp = memCalloc(1, sizeof(ParserMessage));
  4. tmp->file = memStrcpy(file_dir == NULL ? "stdin" : file_dir);
  5. tmp->tm = makeTokenMessage(file_dir);
  6. tmp->status = success;
  7. tmp->status_message = NULL;
  8. return tmp;
  9. }
  10. void freeParserMessage(ParserMessage *pm, bool self) {
  11. FREE_BASE(pm, return_);
  12. freeTokenMessage(pm->tm, true, true);
  13. memFree(pm->status_message);
  14. memFree(pm->file);
  15. if (self)
  16. memFree(pm);
  17. return_:
  18. return;
  19. }
  20. /**
  21. * 命令表匹配
  22. * parserCommandList :
  23. * | MATHER_EOF
  24. * | MATHER_ENTER
  25. * | MATHER_SEMICOLON
  26. * | parserCommand MATHER_ENTER
  27. * | parserCommand MATHER_SEMICOLON
  28. * | parserCommand MATHER_EOF
  29. */
  30. void parserCommandList(PASERSSIGNATURE, bool global, bool is_one, Statement *st) {
  31. int token_type;
  32. int save_enter = pm->tm->file->filter_data.enter;
  33. char *command_message = global ? "ERROR from command list(get parserCommand)" : NULL;
  34. void *bak = NULL;
  35. fline line = 0;
  36. bool should_break = false;
  37. bool have_command = false;
  38. pm_KeyInterrupt = signal_reset;
  39. bak = signal(SIGINT, signalStopPm);
  40. pm->tm->file->filter_data.enter = 0;
  41. while (!should_break){
  42. token_type = readBackToken(pm);
  43. if (token_type == -3 || token_type == -2)
  44. break;
  45. else if (token_type == MATHER_EOF){
  46. delToken(pm);
  47. break;
  48. }
  49. else if (token_type == MATHER_ENTER || token_type == MATHER_SEMICOLON){
  50. delToken(pm);
  51. if (is_one && have_command)
  52. break;
  53. }
  54. else{
  55. Token *command_token = NULL;
  56. int stop;
  57. have_command = true;
  58. if (!callChildToken(CALLPASERSSIGNATURE, parserCommand, COMMAND, &command_token, command_message, command_list_error))
  59. break;
  60. line = command_token->line;
  61. stop = readBackToken(pm);
  62. if (stop == MATHER_ENTER) {
  63. delToken(pm);
  64. if (is_one)
  65. should_break = true;
  66. }
  67. else if (stop == MATHER_SEMICOLON)
  68. delToken(pm);
  69. else if(stop != MATHER_EOF){
  70. if (global) {
  71. Token *tk = popNewToken(pm->tm);
  72. freeToken(tk, true);
  73. syntaxError(pm, command_list_error, command_token->line, 1, "ERROR from parserCommand list(get stop)");
  74. freeToken(command_token, true);
  75. }
  76. else{
  77. connectStatement(st, command_token->data.st);
  78. freeToken(command_token, false);
  79. }
  80. break;
  81. }
  82. connectStatement(st, command_token->data.st);
  83. freeToken(command_token, false);
  84. }
  85. }
  86. if (is_one)
  87. clearLexFile(pm->tm->file);
  88. signal(SIGINT, bak);
  89. if (pm_KeyInterrupt != signal_reset) {
  90. pm_KeyInterrupt = signal_reset;
  91. syntaxError(pm, int_error, line, 1, "KeyInterrupt");
  92. }
  93. pm->tm->file->filter_data.enter = save_enter;
  94. }
  95. /**
  96. * 命令匹配
  97. * parserCommand:
  98. * | MATHER_DEF parserDef
  99. * | MATHER_IF parserIf
  100. * | MATHER_WHILE parserWhile
  101. * | MATHER_TRY parserTry
  102. * | MATHER_BREAK parserControl
  103. * | MATHER_CONTINUE parserControl
  104. * | MATHER_RESTART parserControl
  105. * | MATHER_REGO parserControl
  106. * | MATHER_RETURN parserControl
  107. * | MATHER_RAISE parserControl
  108. * | parserOperation
  109. */
  110. void parserCommand(PASERSSIGNATURE){
  111. int token_type, status;
  112. Statement *st = NULL;
  113. token_type = readBackToken(pm);
  114. switch (token_type) {
  115. case MATHER_AT :
  116. status = callChildStatement(CALLPASERSSIGNATURE, parserDecoration, DECORATION, &st, NULL);
  117. break;
  118. case MATHER_NONLOCAL :
  119. case MATHER_GLOBAL :
  120. case MATHER_DEFAULT :
  121. status = callChildStatement(CALLPASERSSIGNATURE, parserVarControl, VARCONTROL, &st, NULL);
  122. break;
  123. case MATHER_CLASS :
  124. case MATHER_DEF :
  125. status = callChildStatement(CALLPASERSSIGNATURE, parserDef, FUNCTION, &st, NULL);
  126. break;
  127. case MATHER_GOTO :
  128. status = callChildStatement(CALLPASERSSIGNATURE, parserGoto, GOTO, &st, NULL);
  129. break;
  130. case MATHER_LABEL :
  131. status = callChildStatement(CALLPASERSSIGNATURE, parserLabel, LABEL, &st, NULL);
  132. break;
  133. case MATHER_DO :
  134. status = callChildStatement(CALLPASERSSIGNATURE, parserDo, DO_BRANCH, &st, NULL);
  135. break;
  136. case MATHER_WITH :
  137. status = callChildStatement(CALLPASERSSIGNATURE, parserWith, WITH_BRANCH, &st, NULL);
  138. break;
  139. case MATHER_IF :
  140. status = callChildStatement(CALLPASERSSIGNATURE, parserIf, IF_BRANCH, &st, NULL);
  141. break;
  142. case MATHER_FOR :
  143. status = callChildStatement(CALLPASERSSIGNATURE, parserFor, FOR_BRANCH, &st, NULL);
  144. break;
  145. case MATHER_WHILE :
  146. status = callChildStatement(CALLPASERSSIGNATURE, parserWhile, WHILE_BRANCH, &st, NULL);
  147. break;
  148. case MATHER_TRY :
  149. status = callChildStatement(CALLPASERSSIGNATURE, parserTry, TRY_BRANCH, &st, NULL);
  150. break;
  151. case MATHER_BREAK :
  152. status = commandCallControl_(CALLPASERSSIGNATURE, makeBreakStatement, BREAK, &st, false, NULL);
  153. break;
  154. case MATHER_CONTINUE :
  155. status = commandCallControl_(CALLPASERSSIGNATURE, makeContinueStatement, CONTINUE, &st, false, NULL);
  156. break;
  157. case MATHER_RESTART :
  158. status = commandCallControl_(CALLPASERSSIGNATURE, makeRestartStatement, RESTART, &st, false, NULL);
  159. break;
  160. case MATHER_REGO :
  161. status = commandCallControl_(CALLPASERSSIGNATURE, makeRegoStatement, REGO, &st, false, NULL);
  162. break;
  163. case MATHER_RETURN :
  164. status = commandCallControl_(CALLPASERSSIGNATURE, makeReturnStatement, RETURN, &st, false, NULL);
  165. break;
  166. case MATHER_YIELD :
  167. status = commandCallControl_(CALLPASERSSIGNATURE, makeYieldStatement, YIELD, &st, false, NULL);
  168. break;
  169. case MATHER_RAISE :
  170. status = commandCallControl_(CALLPASERSSIGNATURE, makeRaiseStatement, RAISE, &st, false, NULL);
  171. break;
  172. case MATHER_ASSERT :
  173. status = commandCallControl_(CALLPASERSSIGNATURE, makeAssertStatement, ASSERT, &st, true,
  174. "parserAssert: Don't get conditions after assert");
  175. break;
  176. case MATHER_INCLUDE :
  177. status = commandCallControl_(CALLPASERSSIGNATURE, makeIncludeStatement, INCLUDE, &st, true,
  178. "parserInclude: Don't get file after include");
  179. break;
  180. case MATHER_DEL :
  181. status = commandCallControl_(CALLPASERSSIGNATURE, makeDelStatement, DEL, &st, true,
  182. "parserInclude: Don't get operation after del");
  183. break;
  184. case MATHER_FROM :
  185. case MATHER_IMPORT :
  186. status = callChildStatement(CALLPASERSSIGNATURE, parserImport, IMPORT, &st, NULL);
  187. break;
  188. case MATHER_STRING:
  189. case MATHER_NUMBER:
  190. case MATHER_VAR:
  191. case MATHER_SVAR:
  192. case MATHER_LC:
  193. case MATHER_LB:
  194. case MATHER_LP:
  195. case MATHER_SUB:
  196. case MATHER_PROTECT:
  197. case MATHER_PRIVATE:
  198. case MATHER_PUBLIC:
  199. case MATHER_PASSVALUE:
  200. status = callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, &st, NULL);
  201. break;
  202. default:
  203. status = false;
  204. break;
  205. }
  206. if (!status)
  207. goto return_;
  208. addStatementToken(COMMAND, st, pm);
  209. return_: return;
  210. }
  211. void parserDecoration(PASERSSIGNATURE){
  212. Statement *st = NULL;
  213. DecorationStatement *ds = NULL;
  214. int tmp;
  215. long int line = 0;
  216. while ((tmp = readBackToken(pm)) == MATHER_AT || tmp == MATHER_ENTER){
  217. Statement *dst = NULL;
  218. line = delToken(pm);
  219. if (tmp == MATHER_ENTER)
  220. continue;
  221. if (!callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, &dst, "Don't get a decoration operation"))
  222. goto error_;
  223. ds = connectDecorationStatement(dst, ds);
  224. }
  225. if (tmp!= MATHER_CLASS && tmp != MATHER_DEF) {
  226. syntaxError(pm, syntax_error, line, 1, "Don't get a decoration object");
  227. goto error_;
  228. }
  229. if (!callChildStatement(CALLPASERSSIGNATURE, parserDef, FUNCTION, &st, "Don't get a decoration object"))
  230. goto error_;
  231. if (tmp == MATHER_CLASS)
  232. st->u.set_class.decoration = ds;
  233. else
  234. st->u.set_function.decoration = ds;
  235. addStatementToken(DECORATION, st, pm);
  236. return;
  237. error_:
  238. freeDecorationStatement(ds);
  239. }
  240. /**
  241. * label语句匹配
  242. * parserLabel:
  243. * | MATHER_LABEL MATHER_COLON MATHER_STRING(MATHER_VAR) stop_token [缺省所有参数]
  244. * | MATHER_LABEL MATHER_COLON MATHER_STRING(MATHER_VAR) MATHER_AS parserOperation stop_token [缺省command参数]
  245. * | MATHER_LABEL MATHER_COLON MATHER_STRING(MATHER_VAR) MATHER_COLON parserOperation stop_token
  246. * | MATHER_LABEL MATHER_COLON MATHER_STRING(MATHER_VAR) MATHER_AS parserOperation MATHER_COLON parserOperation [缺省var参数]
  247. * @param pm
  248. * @param inter
  249. */
  250. void parserLabel(PASERSSIGNATURE){
  251. Statement *st = NULL;
  252. Statement *var = NULL;
  253. Statement *command = NULL;
  254. Token *label_tk = NULL;
  255. int tmp;
  256. char *label = NULL;
  257. long int line = delToken(pm);
  258. if (!checkToken(pm, MATHER_COLON)){
  259. syntaxError(pm, syntax_error, line, 1, "Don't get : after label");
  260. goto error_;
  261. }
  262. switch (readBackToken(pm)) {
  263. case MATHER_STRING:
  264. case MATHER_VAR:
  265. label_tk = popNewToken(pm->tm);
  266. label = memStrcpy(label_tk->data.str);
  267. freeToken(label_tk, false);
  268. break;
  269. default:
  270. syntaxError(pm, syntax_error, line, 1, "Don't get a label name");
  271. goto error_;
  272. }
  273. if ((tmp = readBackToken(pm)) == MATHER_ENTER || tmp == MATHER_SEMICOLON || tmp == MATHER_EOF) // 匹配到stop_token则label后参数缺省
  274. goto make;
  275. if (tmp != MATHER_COLON) { // 匹配到 : 则label的times参数缺省
  276. if (!checkToken(pm, MATHER_AS)) {
  277. syntaxError(pm, syntax_error, line, 1, "Don't get as after goto label");
  278. goto error_;
  279. } else if (!callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, &var, "Don't get a goto var"))
  280. goto error_;
  281. }
  282. if ((tmp = readBackToken(pm)) == MATHER_ENTER || tmp == MATHER_SEMICOLON || tmp == MATHER_EOF) // 如匹配到stop_token则label的command参数缺省
  283. goto make;
  284. else if (!checkToken(pm, MATHER_COLON)){
  285. syntaxError(pm, syntax_error, line, 1, "Don't get : after goto var");
  286. goto error_;
  287. }
  288. else if (!callChildStatement(CALLPASERSSIGNATURE, parserCommand, COMMAND, &command, "Don't get a label command"))
  289. goto error_;
  290. make:
  291. st = makeLabelStatement(var, command, label, line, pm->file);
  292. addStatementToken(LABEL, st, pm);
  293. memFree(label);
  294. return;
  295. error_:
  296. freeStatement(var);
  297. freeStatement(command);
  298. memFree(label);
  299. }
  300. /**
  301. * goto语句匹配
  302. * parserGoto:
  303. * | MATHER_GOTO MATHER_AT parserOperation stop_token [缺省所有参数]
  304. * | MATHER_GOTO MATHER_AT parserOperation MATHER_COLON parserOperation stop_token [缺省return_参数]
  305. * | MATHER_GOTO MATHER_AT parserOperation MATHER_COLON parserOperation MATHER_COLON parserOperation
  306. * | MATHER_GOTO MATHER_AT parserOperation MATHER_COLON MATHER_COLON parserOperation [缺省times参数]
  307. */
  308. void parserGoto(PASERSSIGNATURE){
  309. Statement *st = NULL;
  310. Statement *label = NULL;
  311. Statement *times = NULL;
  312. Statement *return_ = NULL;
  313. int tmp;
  314. long int line = delToken(pm);
  315. if (!checkToken(pm, MATHER_AT)){
  316. syntaxError(pm, syntax_error, line, 1, "Don't get @ after goto");
  317. goto error_;
  318. }
  319. if (!callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, &label, "Don't get a goto times"))
  320. goto error_;
  321. if ((tmp = readBackToken(pm)) == MATHER_ENTER || tmp == MATHER_SEMICOLON || tmp == MATHER_EOF) // 如匹配到stop_token则goto后面参数缺省
  322. goto make;
  323. else if (!checkToken(pm, MATHER_COLON)){
  324. syntaxError(pm, syntax_error, line, 1, "Don't get : after goto label");
  325. goto error_;
  326. }
  327. else if (!checkToken(pm, MATHER_COLON) && !callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, &times, "Don't get a goto times"))
  328. goto error_; // 若再次匹配到 MATHER_COLON 则表示goto的times参数缺省
  329. if ((tmp = readBackToken(pm)) == MATHER_ENTER || tmp == MATHER_SEMICOLON || tmp == MATHER_EOF) // 如匹配到stop_token则goto的return_参数缺省
  330. goto make;
  331. else if (times != NULL && !checkToken(pm, MATHER_COLON)){
  332. syntaxError(pm, syntax_error, line, 1, "Don't get : after goto times");
  333. goto error_;
  334. }
  335. else if (!callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, &return_, "Don't get a goto return"))
  336. goto error_;
  337. make:
  338. st = makeGotoStatement(return_, times, label, line, pm->file);
  339. addStatementToken(GOTO, st, pm);
  340. return;
  341. error_:
  342. freeStatement(label);
  343. freeStatement(times);
  344. freeStatement(return_);
  345. }
  346. /**
  347. * import 匹配
  348. * parserImport
  349. * | parserControl AS parserOperation
  350. * @param callBack statement生成函数
  351. * @param type 输出token的类型
  352. * @param must_operation 必须匹配 operation
  353. */
  354. void parserImport(PASERSSIGNATURE) {
  355. Statement *opt = NULL;
  356. Statement *st = NULL;
  357. bool is_lock = false;
  358. int token_type = readBackToken(pm);
  359. long int line = delToken(pm);
  360. if (checkToken(pm, MATHER_COLON)) {
  361. switch (readBackToken(pm)) {
  362. case MATHER_PUBLIC:
  363. break;
  364. case MATHER_PRIVATE:
  365. case MATHER_PROTECT:
  366. is_lock = true;
  367. break;
  368. default:
  369. syntaxError(pm, syntax_error, opt->line, 1, "Don't get a aut token");
  370. goto return_;
  371. }
  372. delToken(pm);
  373. }
  374. if (!callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, &opt, "Don't get a import file"))
  375. goto return_;
  376. if (token_type == MATHER_IMPORT) {
  377. Statement *as = NULL;
  378. if (checkToken(pm, MATHER_AS) && !callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, &as, "Don't get a as after import")) {
  379. freeStatement(opt);
  380. goto return_;
  381. }
  382. st = makeImportStatement(opt, as, is_lock);
  383. }
  384. else{
  385. Parameter *pt = NULL;
  386. Parameter *as = NULL;
  387. if (!checkToken(pm, MATHER_IMPORT)) {
  388. syntaxError(pm, syntax_error, opt->line, 1, "Don't get a as after import");
  389. freeStatement(opt);
  390. goto return_;
  391. }
  392. if (checkToken(pm, MATHER_MUL)) // 导入所有
  393. goto mul_;
  394. if (!parserParameter(CALLPASERSSIGNATURE, &pt, false, false, false, false, MATHER_COMMA, MATHER_ASSIGNMENT,
  395. -1) || pt == NULL) {
  396. syntaxError(pm, syntax_error, line, 1, "Don't get any value to import");
  397. freeStatement(opt);
  398. goto return_;
  399. }
  400. if (checkToken(pm, MATHER_AS) && (!parserParameter(CALLPASERSSIGNATURE, &as, false, true, false, false,
  401. MATHER_COMMA, MATHER_ASSIGNMENT, -1) || as == NULL)) {
  402. freeParameter(pt, true);
  403. syntaxError(pm, syntax_error, opt->line, 1, "Don't get any value after import");
  404. freeStatement(opt);
  405. goto return_;
  406. }
  407. if (as == NULL && !checkFormal(pt)){
  408. freeParameter(pt, true);
  409. syntaxError(pm, syntax_error, opt->line, 1, "Don't get success value to import");
  410. freeStatement(opt);
  411. goto return_;
  412. }
  413. mul_:
  414. st = makeFromImportStatement(opt, as, pt, is_lock);
  415. }
  416. addStatementToken(IMPORT, st, pm);
  417. return_:
  418. return;
  419. }
  420. /**
  421. * 控制语句匹配
  422. * parserControl
  423. * | (control token) NULL
  424. * | (control token) parserOperation
  425. * @param callBack statement生成函数
  426. * @param type 输出token的类型
  427. * @param must_operation 必须匹配 operation
  428. */
  429. void parserVarControl(PASERSSIGNATURE) {
  430. Parameter *var = NULL;
  431. Statement *st = NULL;
  432. Token *tmp = NULL;
  433. int token_type = readBackToken(pm);
  434. long int line = delToken(pm);
  435. if (!parserParameter(CALLPASERSSIGNATURE, &var, false, true, true, true, MATHER_COMMA, MATHER_ASSIGNMENT, -1) || var == NULL) {
  436. syntaxError(pm, syntax_error, line, 1, "Don't get any var");
  437. goto return_;
  438. }
  439. st = makeDefaultVarStatement(var, line, pm->file, token_type == MATHER_DEFAULT ? default_ : token_type == MATHER_GLOBAL ? global_ : nonlocal_);
  440. addStatementToken(VARCONTROL, st, pm);
  441. return_:
  442. return;
  443. }
  444. /**
  445. * 控制语句匹配
  446. * parserControl
  447. * | (control token) NULL
  448. * | (control token) parserOperation
  449. * @param callBack statement生成函数
  450. * @param type 输出token的类型
  451. * @param must_operation 必须匹配 operation
  452. */
  453. void parserControl(PASERSSIGNATURE, MakeControlFunction callBack, int type, bool must_operation, char *message) {
  454. Statement *opt = NULL;
  455. Statement *st = NULL;
  456. Token *tmp = NULL;
  457. long int line = delToken(pm);
  458. parserOperation(CALLPASERSSIGNATURE);
  459. if (call_success(pm) && readBackToken(pm) == OPERATION){
  460. tmp = popNewToken(pm->tm);
  461. opt = tmp->data.st;
  462. freeToken(tmp, false);
  463. }
  464. else if (must_operation)
  465. goto error;
  466. st = callBack(opt, line, pm->file);
  467. addStatementToken(type, st, pm);
  468. return;
  469. error:
  470. syntaxError(pm, syntax_error, line, 1, message);
  471. }
  472. void parserDo(PASERSSIGNATURE){
  473. Statement *st = NULL;
  474. Statement *do_code = NULL;
  475. long int line = delToken(pm);
  476. if (readBackToken(pm) == MATHER_WHILE){ // do...while语句
  477. if (!callChildStatement(CALLPASERSSIGNATURE, parserWhile, WHILE_BRANCH, &st, "Don't get a while code"))
  478. goto error_;
  479. st->u.while_branch.type = do_while_;
  480. }
  481. else {
  482. if (!callParserCode(CALLPASERSSIGNATURE, &do_code, "Don't get a if...else code", line))
  483. goto error_;
  484. again:
  485. switch (readBackToken(pm)){
  486. case MATHER_IF: {
  487. StatementList *do_sl = NULL;
  488. if (!callChildStatement(CALLPASERSSIGNATURE, parserIf, IF_BRANCH, &st, "Don't get a if code after do"))
  489. goto error_;
  490. do_sl = makeStatementList(NULL, NULL, do_code, do_b);
  491. do_sl->next = st->u.if_branch.if_list;
  492. st->u.if_branch.if_list = do_sl;
  493. break;
  494. }
  495. case MATHER_WHILE:
  496. if (!callChildStatement(CALLPASERSSIGNATURE, parserWhile, WHILE_BRANCH, &st, "Don't get a while code after do"))
  497. goto error_;
  498. st->u.while_branch.first = do_code;
  499. break;
  500. case MATHER_FOR:
  501. if (!callChildStatement(CALLPASERSSIGNATURE, parserFor, FOR_BRANCH, &st, "Don't get a for code after do"))
  502. goto error_;
  503. st->u.for_branch.first_do = do_code;
  504. break;
  505. case MATHER_DEF:
  506. if (!callChildStatement(CALLPASERSSIGNATURE, parserDef, FUNCTION, &st, "Don't get a function def after do"))
  507. goto error_;
  508. st->u.set_function.first_do = do_code;
  509. break;
  510. case MATHER_DO: {
  511. long int tmp_line = delToken(pm);
  512. if (readBackToken(pm) != MATHER_WHILE){
  513. syntaxError(pm, syntax_error, tmp_line, 1, "Don't get while after do");
  514. goto error_;
  515. }
  516. if (!callChildStatement(CALLPASERSSIGNATURE, parserWhile, WHILE_BRANCH, &st, "Don't get a while code"))
  517. goto error_;
  518. st->u.while_branch.type = do_while_;
  519. st->u.while_branch.first = do_code;
  520. break;
  521. }
  522. case MATHER_ENTER:
  523. delToken(pm);
  524. goto again;
  525. default: {
  526. Token *tmp = popNewToken(pm->tm);
  527. syntaxError(pm, syntax_error, tmp->line, 1, "Get don't support branch after do");
  528. backToken_(pm, tmp);
  529. goto error_;
  530. }
  531. }
  532. }
  533. addStatementToken(DO_BRANCH, st, pm);
  534. return;
  535. error_:
  536. freeStatement(do_code);
  537. freeStatement(st);
  538. }
  539. void parserFor(PASERSSIGNATURE){
  540. Statement *st = NULL;
  541. Statement *else_st = NULL;
  542. Statement *finally_st = NULL;
  543. Statement *do_st = NULL;
  544. StatementList *sl = NULL;
  545. long int line = delToken(pm);
  546. {
  547. Statement *code_tmp = NULL, *var_tmp = NULL, *iter_tmp = NULL;
  548. if (!callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, &var_tmp, "Don't get a for var"))
  549. goto error_;
  550. if (!checkToken(pm, MATHER_IN)){
  551. freeStatement(var_tmp);
  552. syntaxError(pm, syntax_error, line, 1, "Don't get in after for");
  553. goto error_;
  554. }
  555. if (!callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, &iter_tmp, "Don't get a for condition")) {
  556. freeStatement(var_tmp);
  557. goto error_;
  558. }
  559. if (!callParserCode(CALLPASERSSIGNATURE, &code_tmp, "Don't get a for code", line)) {
  560. freeStatement(iter_tmp);
  561. freeStatement(var_tmp);
  562. goto error_;
  563. }
  564. sl = makeStatementList(iter_tmp, var_tmp, code_tmp, for_b);
  565. }
  566. again:
  567. switch (readBackToken(pm)) {
  568. case MATHER_DO: {
  569. if (do_st != NULL || else_st != NULL)
  570. goto default_;
  571. long int tmp_line = delToken(pm);
  572. if (!callParserCode(CALLPASERSSIGNATURE, &do_st, "Don't get a for...do code", tmp_line))
  573. goto error_;
  574. goto again;
  575. }
  576. case MATHER_ELSE: {
  577. long int tmp_line = delToken(pm);
  578. if (else_st != NULL) {
  579. syntaxError(pm, syntax_error, tmp_line, 1, "get else after else\n");
  580. goto error_;
  581. }
  582. if (!callParserCode(CALLPASERSSIGNATURE, &else_st, "Don't get a for...else code", tmp_line))
  583. goto error_;
  584. goto again;
  585. }
  586. case MATHER_FINALLY: {
  587. long int tmp_line = delToken(pm);
  588. if (!callParserCode(CALLPASERSSIGNATURE, &finally_st, "Don't get a for...finally code", tmp_line))
  589. goto error_;
  590. break;
  591. }
  592. case MATHER_ENTER:
  593. delToken(pm);
  594. goto again;
  595. case MATHER_SEMICOLON:
  596. break;
  597. default: {
  598. default_:
  599. addLexToken(pm, MATHER_ENTER);
  600. break;
  601. }
  602. }
  603. st = makeForStatement(line, pm->file);
  604. st->u.for_branch.for_list = sl;
  605. st->u.for_branch.else_list = else_st;
  606. st->u.for_branch.finally = finally_st;
  607. st->u.for_branch.after_do = do_st;
  608. addStatementToken(FOR_BRANCH, st, pm);
  609. return;
  610. error_:
  611. freeStatement(else_st);
  612. freeStatement(finally_st);
  613. freeStatement(do_st);
  614. freeStatementList(sl);
  615. }
  616. void parserWith(PASERSSIGNATURE){
  617. Statement *st = NULL;
  618. Statement *code_tmp = NULL;
  619. Statement *var_tmp = NULL;
  620. Statement *condition_tmp = NULL;
  621. Statement *else_st = NULL;
  622. Statement *finally_st = NULL;
  623. StatementList *sl = NULL;
  624. long int line = 0;
  625. long int tmp_line;
  626. line = delToken(pm);
  627. if (!callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, &condition_tmp, "Don't get a with operation"))
  628. goto error_;
  629. if (!callParserAs(CALLPASERSSIGNATURE, &var_tmp, "Don't get a with var"))
  630. goto error_;
  631. if (!callParserCode(CALLPASERSSIGNATURE, &code_tmp, "Don't get a with code", line))
  632. goto error_;
  633. sl = connectStatementList(sl, makeStatementList(condition_tmp, var_tmp, code_tmp, with_b));
  634. condition_tmp = NULL;
  635. var_tmp = NULL;
  636. code_tmp = NULL;
  637. for (int tk=readBackToken(pm); tk == MATHER_ENTER; tk = readBackToken(pm))
  638. delToken(pm);
  639. if (readBackToken(pm) == MATHER_ELSE) {
  640. tmp_line = delToken(pm);
  641. if (!callParserCode(CALLPASERSSIGNATURE, &else_st, "Don't get a with...else code", tmp_line))
  642. goto error_;
  643. }
  644. for (int tk=readBackToken(pm); tk == MATHER_ENTER; tk = readBackToken(pm))
  645. delToken(pm);
  646. if (readBackToken(pm) == MATHER_FINALLY) {
  647. tmp_line = delToken(pm);
  648. if (!callParserCode(CALLPASERSSIGNATURE, &finally_st, "Don't get a wilt...finally code", tmp_line))
  649. goto error_;
  650. }
  651. addLexToken(pm, MATHER_ENTER);
  652. st = makeWithStatement(line, pm->file);
  653. st->u.with_branch.with_list = sl;
  654. st->u.with_branch.else_list = else_st;
  655. st->u.with_branch.finally = finally_st;
  656. addStatementToken(WITH_BRANCH, st, pm);
  657. return;
  658. error_:
  659. freeStatement(condition_tmp);
  660. freeStatement(var_tmp);
  661. freeStatement(else_st);
  662. freeStatement(finally_st);
  663. freeStatementList(sl);
  664. }
  665. /**
  666. * 条件分支匹配
  667. * parserIf:
  668. * | MATHER_IF parserOperation (MATHER_AS parserOperation) callParserCode
  669. * | parserIf MATHER_ELIF parserOperation (MATHER_AS parserOperation) callParserCode
  670. * | parserIf MATHER_DO callParserCode [不允许两次连用]
  671. * | parserIf MATHER_ELSE callParserCode [不允许再出现if和elif以及do] [只出现一次] [4]
  672. * | parserIf MATHER_FINALLY callParserCode [结尾]
  673. * 注释:会自动过滤 <ENTER> , 可以使用 <SEMICOLON> 作为结束表示
  674. * 注释:自动添加 <ENTER> 结尾符号
  675. * 注释:(MATHER_AS parserOperation) 表示允许出现或者不出现, 若出现则 MATHER_AS parserOperation 必须一起出现
  676. * 特别注意:自进入模式[4]后,匹配顺序自上而下不可逆
  677. * @param pm
  678. * @param inter
  679. */
  680. void parserIf(PASERSSIGNATURE){
  681. Statement *st = NULL;
  682. Statement *else_st = NULL;
  683. Statement *finally_st = NULL;
  684. StatementList *sl = NULL;
  685. bool have_if = false;
  686. long int line = 0;
  687. again:
  688. switch (readBackToken(pm)) {
  689. case MATHER_IF:
  690. if (have_if)
  691. goto default_;
  692. else
  693. have_if = true;
  694. line = delToken(pm);
  695. goto not_del;
  696. case MATHER_ELIF: {
  697. Statement *code_tmp = NULL, *var_tmp = NULL, *condition_tmp = NULL;
  698. long int tmp_line = delToken(pm);
  699. if (else_st != NULL) {
  700. syntaxError(pm, syntax_error, tmp_line, 1, "get elif after else");
  701. goto error_;
  702. }
  703. not_del:
  704. if (!callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, &condition_tmp, "Don't get a if condition"))
  705. goto error_;
  706. if (!callParserAs(CALLPASERSSIGNATURE, &var_tmp, "Don't get a while var")) {
  707. freeStatement(condition_tmp);
  708. goto error_;
  709. }
  710. if (!callParserCode(CALLPASERSSIGNATURE, &code_tmp, "Don't get a if code", tmp_line)) {
  711. freeStatement(condition_tmp);
  712. freeStatement(var_tmp);
  713. goto error_;
  714. }
  715. sl = connectStatementList(sl, makeStatementList(condition_tmp, var_tmp, code_tmp, if_b));
  716. goto again;
  717. }
  718. case MATHER_DO: {
  719. if (else_st != NULL)
  720. goto default_;
  721. Statement *code_tmp = NULL;
  722. long int tmp_line = delToken(pm);
  723. if (!callParserCode(CALLPASERSSIGNATURE, &code_tmp, "Don't get a if...do code", tmp_line))
  724. goto error_;
  725. sl = connectStatementList(sl, makeStatementList(NULL, NULL, code_tmp, do_b));
  726. goto again;
  727. }
  728. case MATHER_ELSE: {
  729. long int tmp_line = delToken(pm);
  730. if (else_st != NULL) {
  731. syntaxError(pm, syntax_error, tmp_line, 1, "get else after else");
  732. goto error_;
  733. }
  734. if (!callParserCode(CALLPASERSSIGNATURE, &else_st, "Don't get a if...else code", tmp_line))
  735. goto error_;
  736. goto again;
  737. }
  738. case MATHER_FINALLY: {
  739. long int tmp_line = delToken(pm);
  740. if (!callParserCode(CALLPASERSSIGNATURE, &finally_st, "Don't get a if...finally code", tmp_line))
  741. goto error_;
  742. break;
  743. }
  744. case MATHER_ENTER:
  745. delToken(pm);
  746. goto again;
  747. case MATHER_SEMICOLON:
  748. break;
  749. default:{
  750. default_:
  751. addLexToken(pm, MATHER_ENTER);
  752. break;
  753. }
  754. }
  755. st = makeIfStatement(line, pm->file);
  756. st->u.if_branch.if_list = sl;
  757. st->u.if_branch.else_list = else_st;
  758. st->u.if_branch.finally = finally_st;
  759. addStatementToken(IF_BRANCH, st, pm);
  760. return;
  761. error_:
  762. freeStatement(else_st);
  763. freeStatement(finally_st);
  764. freeStatementList(sl);
  765. }
  766. /**
  767. * 条件循环匹配
  768. * parserWhile:
  769. * | MATHER_WHILE parserOperation (MATHER_AS parserOperation) callParserCode
  770. * | parserWhile MATHER_DO callParserCode [只出现一次]
  771. * | parserWhile MATHER_ELSE callParserCode [只出现一次]
  772. * | parserWhile MATHER_FINALLY callParserCode [结尾]
  773. * 注释:同 ``parserIf``
  774. * 特别注意:匹配顺序自上而下不可逆
  775. * @param pm
  776. * @param inter
  777. */
  778. void parserWhile(PASERSSIGNATURE){
  779. Statement *st = NULL;
  780. Statement *else_st = NULL;
  781. Statement *finally_st = NULL;
  782. Statement *do_st = NULL;
  783. StatementList *sl = NULL;
  784. bool have_while = false;
  785. long int line = 0;
  786. again:
  787. switch (readBackToken(pm)) {
  788. case MATHER_WHILE: {
  789. if (have_while)
  790. goto default_;
  791. else
  792. have_while = true;
  793. Statement *code_tmp = NULL, *var_tmp = NULL, *condition_tmp = NULL;
  794. line = delToken(pm);
  795. if (!callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, &condition_tmp, "Don't get a while condition"))
  796. goto error_;
  797. if (!callParserAs(CALLPASERSSIGNATURE, &var_tmp, "Don't get a while var")){
  798. freeStatement(condition_tmp);
  799. goto error_;
  800. }
  801. if (!callParserCode(CALLPASERSSIGNATURE, &code_tmp, "Don't get a while code", line)) {
  802. freeStatement(condition_tmp);
  803. freeStatement(var_tmp);
  804. goto error_;
  805. }
  806. if (sl != NULL)
  807. freeStatementList(sl);
  808. sl = makeStatementList(condition_tmp, var_tmp, code_tmp, while_b);
  809. goto again;
  810. }
  811. case MATHER_DO: {
  812. if (do_st != NULL || else_st != NULL)
  813. goto default_;
  814. long int tmp_line = delToken(pm);
  815. if (!callParserCode(CALLPASERSSIGNATURE, &do_st, "Don't get a while...do code", tmp_line))
  816. goto error_;
  817. goto again;
  818. }
  819. case MATHER_ELSE: {
  820. long int tmp_line = delToken(pm);
  821. if (else_st != NULL) {
  822. syntaxError(pm, syntax_error, tmp_line, 1, "get else after else\n");
  823. goto error_;
  824. }
  825. if (!callParserCode(CALLPASERSSIGNATURE, &else_st, "Don't get a while...else code", tmp_line))
  826. goto error_;
  827. goto again;
  828. }
  829. case MATHER_FINALLY: {
  830. long int tmp_line = delToken(pm);
  831. if (!callParserCode(CALLPASERSSIGNATURE, &finally_st, "Don't get a while...finally code", tmp_line))
  832. goto error_;
  833. break;
  834. }
  835. case MATHER_ENTER:
  836. delToken(pm);
  837. goto again;
  838. case MATHER_SEMICOLON:
  839. break;
  840. default: {
  841. default_:
  842. addLexToken(pm, MATHER_ENTER);
  843. break;
  844. }
  845. }
  846. st = makeWhileStatement(line, pm->file);
  847. st->u.while_branch.while_list = sl;
  848. st->u.while_branch.else_list = else_st;
  849. st->u.while_branch.finally = finally_st;
  850. st->u.while_branch.after = do_st;
  851. addStatementToken(WHILE_BRANCH, st, pm);
  852. return;
  853. error_:
  854. freeStatement(else_st);
  855. freeStatement(finally_st);
  856. freeStatement(do_st);
  857. freeStatementList(sl);
  858. }
  859. /**
  860. * 异常捕获分支匹配
  861. * parserTry:
  862. * | MATHER_TRY callParserCode
  863. * | parserTry MATHER_EXCEPT (MATHER_AS parserOperation) callParserCode
  864. * | parserTry MATHER_ELSE callParserCode [只出现一次]
  865. * | parserTry MATHER_FINALLY callParserCode [结尾]
  866. * 注释:同 ``parserIf``
  867. * 特别注意:匹配顺序自上而下不可逆
  868. * @param pm
  869. * @param inter
  870. */
  871. void parserTry(PASERSSIGNATURE){
  872. Statement *st = NULL;
  873. Statement *try_st = NULL;
  874. Statement *else_st = NULL;
  875. Statement *finally_st = NULL;
  876. StatementList *sl = NULL;
  877. long int line = 0;
  878. again:
  879. switch (readBackToken(pm)) {
  880. case MATHER_TRY:{
  881. if (try_st != NULL)
  882. goto default_;
  883. line = delToken(pm);
  884. if (!callParserCode(CALLPASERSSIGNATURE, &try_st, "Don't get a try code", line))
  885. goto error_;
  886. goto again;
  887. }
  888. case MATHER_EXCEPT: {
  889. Statement *code_tmp = NULL, *var_tmp = NULL, *condition_tmp = NULL;
  890. long int tmp_line = delToken(pm);
  891. if (else_st != NULL) {
  892. syntaxError(pm, syntax_error, tmp_line, 1, "get except after else");
  893. goto error_;
  894. }
  895. if (readBackToken(pm) != MATHER_LC)
  896. callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, &condition_tmp, NULL);
  897. if (!callParserAs(CALLPASERSSIGNATURE, &var_tmp, "Don't get a except var")){
  898. freeStatement(condition_tmp);
  899. goto error_;
  900. }
  901. if (!callParserCode(CALLPASERSSIGNATURE, &code_tmp, "Don't get a except code", tmp_line)) {
  902. freeStatement(condition_tmp);
  903. freeStatement(var_tmp);
  904. goto error_;
  905. }
  906. sl = connectStatementList(sl, makeStatementList(condition_tmp, var_tmp, code_tmp, except_b));
  907. goto again;
  908. }
  909. case MATHER_ELSE: {
  910. long int tmp_line = delToken(pm);
  911. if (else_st != NULL) {
  912. syntaxError(pm, syntax_error, tmp_line, 1, "get else after else");
  913. goto error_;
  914. }
  915. if (!callParserCode(CALLPASERSSIGNATURE, &else_st, "Don't get a try...else code", tmp_line))
  916. goto error_;
  917. goto again;
  918. }
  919. case MATHER_FINALLY: {
  920. long int tmp_line = delToken(pm);
  921. if (!callParserCode(CALLPASERSSIGNATURE, &finally_st, "Don't get a try...finally code", tmp_line))
  922. goto error_;
  923. break;
  924. }
  925. case MATHER_ENTER:
  926. delToken(pm);
  927. goto again;
  928. case MATHER_SEMICOLON:
  929. break;
  930. default: {
  931. default_:
  932. addLexToken(pm, MATHER_ENTER);
  933. break;
  934. }
  935. }
  936. st = makeTryStatement(line, pm->file);
  937. st->u.try_branch.try = try_st;
  938. st->u.try_branch.except_list = sl;
  939. st->u.try_branch.else_list = else_st;
  940. st->u.try_branch.finally = finally_st;
  941. addStatementToken(TRY_BRANCH, st, pm);
  942. return;
  943. error_:
  944. freeStatement(try_st);
  945. freeStatement(else_st);
  946. freeStatement(finally_st);
  947. freeStatementList(sl);
  948. }
  949. /**
  950. * 函数定义匹配
  951. * parserDef:
  952. * | parserBaseValue MATHER_LP parserParameter(is_formal) MATHER_RP callParserCode
  953. * 注释:自动添加 <ENTER> 结尾符号
  954. * @param pm
  955. * @param inter
  956. */
  957. void parserDef(PASERSSIGNATURE){
  958. Statement *st = NULL;
  959. Statement *name_tmp = NULL;
  960. Statement *code_tmp = NULL;
  961. Parameter *pt = NULL;
  962. int type = readBackToken(pm);
  963. long int line = delToken(pm);
  964. if (!callChildStatement(CALLPASERSSIGNATURE, parserBaseValue, BASEVALUE, &name_tmp,
  965. "Don't get a function/class name"))
  966. goto error_;
  967. if (!checkToken(pm, MATHER_LP))
  968. goto get_code;
  969. if (!parserParameter(CALLPASERSSIGNATURE, &pt, true, true, false, false, MATHER_COMMA, MATHER_ASSIGNMENT, type==MATHER_DEF ? MATHER_SEMICOLON : -1)) {
  970. lexEnter(pm, false);
  971. syntaxError(pm, syntax_error, line, 1, "Don't get a function/class parameter");
  972. goto error_;
  973. }
  974. if (!checkToken(pm, MATHER_RP)) {
  975. syntaxError(pm, syntax_error, line, 1, "Don't get a function/class ) after parameter");
  976. goto error_;
  977. }
  978. get_code:
  979. if (!callParserCode(CALLPASERSSIGNATURE, &code_tmp, "Don't get a function code", line)) {
  980. syntaxError(pm, syntax_error, line, 1, "Don't get a function code");
  981. goto error_;
  982. }
  983. if (type == MATHER_DEF)
  984. st = makeFunctionStatement(name_tmp, code_tmp, pt);
  985. else
  986. st = makeClassStatement(name_tmp, code_tmp, pt);
  987. addLexToken(pm, MATHER_ENTER);
  988. addStatementToken(FUNCTION, st, pm);
  989. return;
  990. error_:
  991. freeStatement(name_tmp);
  992. freeStatement(code_tmp);
  993. freeParameter(pt, true);
  994. }
  995. /**
  996. * 函数定义匹配
  997. * parserCode:
  998. * | MATHER_LC parserCommandList MATHER_RC
  999. * 注释:自动忽略MATHER_LC前的空格
  1000. * @param pm
  1001. * @param inter
  1002. */
  1003. void parserCode(PASERSSIGNATURE) {
  1004. long int line = 0;
  1005. Statement *st = makeStatement(line, pm->file);
  1006. while (true){
  1007. if (readBackToken(pm) != MATHER_LC)
  1008. goto again_;
  1009. line = delToken(pm);
  1010. break;
  1011. again_:
  1012. if (!checkToken(pm, MATHER_ENTER))
  1013. goto return_;
  1014. }
  1015. parserCommandList(CALLPASERSSIGNATURE, false, false, st);
  1016. if (!call_success(pm))
  1017. goto error_;
  1018. if (!checkToken(pm, MATHER_RC)) {
  1019. syntaxError(pm, syntax_error, line, 1, "Don't get the }"); // 使用{的行号
  1020. goto error_;
  1021. }
  1022. return_:
  1023. addStatementToken(CODE, st, pm);
  1024. return;
  1025. error_:
  1026. freeStatement(st);
  1027. }
  1028. /**
  1029. * 表达式匹配
  1030. * parserOperation:
  1031. * | parserAssignment
  1032. */
  1033. void parserOperation(PASERSSIGNATURE){
  1034. Statement *operation_st = NULL;
  1035. if (!callChildStatement(CALLPASERSSIGNATURE, parserAssignment, ASSIGNMENT, &operation_st, NULL))
  1036. goto return_;
  1037. addStatementToken(OPERATION, operation_st, pm);
  1038. return_:
  1039. return;
  1040. }
  1041. /**
  1042. * 赋值表达式匹配
  1043. * parserAssignment:
  1044. * | parserTuple
  1045. * | parserAssignment ASSIGNMENT parserTuple [2]
  1046. * 注意:在链接statement的时候, 模式[2]相当于 parserTuple ASSIGNMENT parserAssignment
  1047. */
  1048. bool checkAssignmentLeft(PASERSSIGNATURE, Statement *left){
  1049. if (left->type == call_function && !checkFormal(left->u.call_function.parameter)){
  1050. syntaxError(pm, syntax_error, left->line, 1, "Don't get success function definition from Assignment22");
  1051. return false;
  1052. }
  1053. return true;
  1054. }
  1055. bool switchAssignment(PASERSSIGNATURE, int symbol, Statement **st){
  1056. switch (symbol) { // 此处保持使用switch分支
  1057. case MATHER_ASSIGNMENT:
  1058. *st = makeOperationBaseStatement(OPT_ASS, 0, pm->file);
  1059. break;
  1060. default:
  1061. return false;
  1062. }
  1063. return true;
  1064. }
  1065. void parserAssignment(PASERSSIGNATURE){
  1066. return twoOperation(CALLPASERSSIGNATURE, parserTuple, switchAssignment, checkAssignmentLeft, TUPLE, ASSIGNMENT,
  1067. "polynomial", "assignment", true);
  1068. }
  1069. /**
  1070. * 元组匹配
  1071. * parserTuple:
  1072. * | parserPolynomial
  1073. * | parserTuple COMMA parserPolynomial
  1074. * @param pm
  1075. * @param inter
  1076. */
  1077. void parserTuple(PASERSSIGNATURE){
  1078. Parameter *pt = NULL;
  1079. Statement *st = NULL;
  1080. Token *tmp = NULL;
  1081. long int line = 0;
  1082. if (readBackToken(pm) == MATHER_MUL) {
  1083. line = pm->tm->ts->token_list->line;
  1084. goto parserPt;
  1085. }
  1086. if (!callChildToken(CALLPASERSSIGNATURE, parserPolynomial, POLYNOMIAL, &tmp, NULL, syntax_error))
  1087. goto return_;
  1088. if (readBackToken(pm) != MATHER_COMMA){
  1089. tmp->token_type = TUPLE;
  1090. addToken_(pm ,tmp);
  1091. goto return_;
  1092. }
  1093. line = tmp->line;
  1094. addToken_(pm ,tmp);
  1095. parserPt:
  1096. if (!parserParameter(CALLPASERSSIGNATURE, &pt, false, false, true, false, MATHER_COMMA, MATHER_ASSIGNMENT, -1)) {
  1097. syntaxError(pm, syntax_error, line, 1, "Don't get tuple element");
  1098. goto return_;
  1099. }
  1100. st = makeTupleStatement(pt, value_tuple, pt->data.value->line, pm->file);
  1101. addStatementToken(TUPLE, st, pm);
  1102. return_:
  1103. return;
  1104. }
  1105. /**
  1106. * 多项式匹配
  1107. * parserPolynomial:
  1108. * | parserBaseValue
  1109. * | parserPolynomial OPT_ADD parserFactor
  1110. * | parserPolynomial OPT_SUB parserFactor
  1111. */
  1112. bool switchPolynomial(PASERSSIGNATURE, int symbol, Statement **st){
  1113. switch (symbol) {
  1114. case MATHER_ADD:
  1115. *st = makeOperationBaseStatement(OPT_ADD, 0, pm->file);
  1116. break;
  1117. case MATHER_SUB:
  1118. *st = makeOperationBaseStatement(OPT_SUB, 0, pm->file);
  1119. break;
  1120. default:
  1121. return false;
  1122. }
  1123. return true;
  1124. }
  1125. void parserPolynomial(PASERSSIGNATURE){
  1126. return twoOperation(CALLPASERSSIGNATURE, parserFactor, switchPolynomial, NULL, FACTOR, POLYNOMIAL,
  1127. "factor", "polynomial", false);
  1128. }
  1129. /**
  1130. * 因式匹配
  1131. * parserFactor:
  1132. * | parserCallBack
  1133. * | switchFactor OPT_ADD parserCallBack
  1134. * | switchFactor OPT_SUB parserCallBack
  1135. */
  1136. bool switchFactor(PASERSSIGNATURE, int symbol, Statement **st){
  1137. switch (symbol) {
  1138. case MATHER_MUL:
  1139. *st = makeOperationBaseStatement(OPT_MUL, 0, pm->file);
  1140. break;
  1141. case MATHER_DIV:
  1142. *st = makeOperationBaseStatement(OPT_DIV, 0, pm->file);
  1143. break;
  1144. default:
  1145. return false;
  1146. }
  1147. return true;
  1148. }
  1149. void parserFactor(PASERSSIGNATURE){
  1150. return twoOperation(CALLPASERSSIGNATURE, parserCallBack, switchFactor, NULL, CALLBACK, FACTOR,
  1151. "call back", "factor", false);
  1152. }
  1153. /**
  1154. * 函数回调匹配
  1155. * parserCallBack:
  1156. * | parserBaseValue
  1157. * | parserCallBack MATHER_LP parserParameter MATHER_RP
  1158. */
  1159. bool tailCall(PASERSSIGNATURE, Token *left_token, Statement **st){
  1160. Parameter *pt = NULL;
  1161. long int line = delToken(pm);
  1162. if (checkToken(pm, MATHER_RP))
  1163. goto not_pt;
  1164. if (!parserParameter(CALLPASERSSIGNATURE, &pt, true, false, false, false, MATHER_COMMA, MATHER_ASSIGNMENT, -1)) {
  1165. syntaxError(pm, syntax_error, line, 1, "Don't get call parameter");
  1166. return false;
  1167. }
  1168. if (!checkToken(pm, MATHER_RP)) {
  1169. freeParameter(pt, true);
  1170. syntaxError(pm, syntax_error, line, 1, "Don't get ) from call back");
  1171. return false;
  1172. }
  1173. not_pt:
  1174. *st = makeCallStatement(left_token->data.st, pt);
  1175. return true;
  1176. }
  1177. bool tailSlice(PASERSSIGNATURE, Token *left_token, Statement **st){
  1178. Parameter *pt = NULL;
  1179. Token *tmp = NULL;
  1180. enum SliceType type; // 0-slice 1-down
  1181. long int line = delToken(pm);
  1182. if (!callChildToken(CALLPASERSSIGNATURE, parserPolynomial, POLYNOMIAL, &tmp, "Don't get slice/down element", syntax_error))
  1183. return false;
  1184. else if (readBackToken(pm) == MATHER_COLON)
  1185. type = SliceType_slice_;
  1186. else
  1187. type = SliceType_down_;
  1188. line = tmp->line;
  1189. addToken_(pm ,tmp);
  1190. if (!parserParameter(CALLPASERSSIGNATURE, &pt, true, true, true, true,
  1191. (type == SliceType_down_ ? MATHER_COMMA : MATHER_COLON), MATHER_ASSIGNMENT, -1)) {
  1192. syntaxError(pm, syntax_error, line, 1, "Don't get slice element");
  1193. return false;
  1194. }
  1195. if (!checkToken(pm, MATHER_RB)){
  1196. freeParameter(pt, true);
  1197. syntaxError(pm, syntax_error, line, 1, "Don't get ] from slice");
  1198. return false;
  1199. }
  1200. *st = makeSliceStatement(left_token->data.st, pt, type);
  1201. return true;
  1202. }
  1203. bool taliPoint(PASERSSIGNATURE, Token *left_token, Statement **st){
  1204. Statement *right_st = NULL;
  1205. delToken(pm);
  1206. if (!callChildStatement(CALLPASERSSIGNATURE, parserBaseValue, BASEVALUE, &right_st, "Don't get a BaseValue after point"))
  1207. return false;
  1208. *st = makeOperationStatement(OPT_POINT, left_token->data.st, right_st);
  1209. return true;
  1210. }
  1211. bool taliLink(PASERSSIGNATURE, Token *left_token, Statement **st){
  1212. Statement *right_st = NULL;
  1213. delToken(pm);
  1214. if (!callChildStatement(CALLPASERSSIGNATURE, parserBaseValue, BASEVALUE, &right_st, "Don't get a BaseValue after link"))
  1215. return false;
  1216. *st = makeOperationStatement(OPT_LINK, left_token->data.st, right_st);
  1217. return true;
  1218. }
  1219. void parserCallBack(PASERSSIGNATURE){
  1220. while(true){
  1221. int tk;
  1222. Token *left_token = NULL;
  1223. struct Statement *st = NULL;
  1224. if (readBackToken(pm) != CALLBACK){
  1225. if (!callChildStatement(CALLPASERSSIGNATURE, parserBaseValue, BASEVALUE, &st, NULL))
  1226. goto return_;
  1227. addStatementToken(CALLBACK, st, pm);
  1228. continue;
  1229. }
  1230. left_token = popNewToken(pm->tm);
  1231. tk = readBackToken(pm);
  1232. if (tk == MATHER_LB && !tailSlice(CALLPASERSSIGNATURE, left_token, &st) ||
  1233. tk == MATHER_LP && !tailCall(CALLPASERSSIGNATURE, left_token, &st) ||
  1234. tk == MATHER_POINT && !taliPoint(CALLPASERSSIGNATURE, left_token, &st) ||
  1235. tk == MATHER_LINK && !taliLink(CALLPASERSSIGNATURE, left_token, &st)) {
  1236. freeToken(left_token, true);
  1237. goto return_;
  1238. } else if (tk != MATHER_LB && tk != MATHER_LP && tk != MATHER_POINT && tk != MATHER_LINK) {
  1239. backToken_(pm, left_token);
  1240. goto return_;
  1241. }
  1242. addStatementToken(CALLBACK, st, pm);
  1243. freeToken(left_token, false);
  1244. }
  1245. return_: return;
  1246. }
  1247. /**
  1248. * 字面量匹配
  1249. * parserBaseValue:
  1250. * | MATHER_NUMBER
  1251. * | MATHER_STRING
  1252. * | MATHER_VAR
  1253. * | MATHER_LAMBDA parserParameter MATHER_COLON parserOperation
  1254. * | MATHER_LP parserOperation MATHER_LP
  1255. * | MATHER_LP parserOperation MATHER_LP -> list
  1256. * | MATHER_LP parserOperation MATHER_LP MATHER_VAR
  1257. * | MATHER_LC parserParameter(dict) MATHER_LC
  1258. */
  1259. int getOperation(PASERSSIGNATURE, int right_type, Statement **st, char *name){
  1260. *st = NULL;
  1261. if (checkToken(pm, right_type))
  1262. goto return_;
  1263. if (!callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, st, NULL))
  1264. return 0;
  1265. if (!checkToken(pm, right_type)){
  1266. freeStatement(*st);
  1267. return -1;
  1268. }
  1269. return_:
  1270. return 1;
  1271. }
  1272. void parserBaseValue(PASERSSIGNATURE){
  1273. Token *value_token = popNewToken(pm->tm);
  1274. Statement *st = NULL;
  1275. switch (value_token->token_type) {
  1276. case MATHER_NUMBER : {
  1277. Statement *tmp = NULL;
  1278. tmp = makeBaseStrValueStatement(value_token->data.str, number_str, value_token->line, pm->file);
  1279. if (*value_token->data.second_str == NUL)
  1280. st = tmp;
  1281. else {
  1282. Statement *second_var = makeBaseVarStatement(value_token->data.second_str, NULL, value_token->line,
  1283. pm->file);
  1284. st = makeCallStatement(second_var, makeValueParameter(tmp));
  1285. }
  1286. break;
  1287. }
  1288. case MATHER_STRING:{
  1289. Statement *tmp = NULL;
  1290. tmp = makeBaseStrValueStatement(value_token->data.str, string_str, value_token->line, pm->file);
  1291. if (*value_token->data.second_str == NUL)
  1292. st = tmp;
  1293. else {
  1294. Statement *sencod_var = makeBaseVarStatement(value_token->data.second_str, NULL, value_token->line,
  1295. pm->file);
  1296. st = makeCallStatement(sencod_var, makeValueParameter(tmp));
  1297. }
  1298. break;
  1299. }
  1300. case MATHER_TRUE:
  1301. st = makeBaseValueStatement(bool_true, value_token->line, pm->file);
  1302. break;
  1303. case MATHER_FALSE:
  1304. st = makeBaseValueStatement(bool_false, value_token->line, pm->file);
  1305. break;
  1306. case MATHER_NULL:
  1307. st = makeBaseValueStatement(null_value, value_token->line, pm->file);
  1308. break;
  1309. case MATHER_PASSVALUE:
  1310. st = makeBaseValueStatement(pass_value, value_token->line, pm->file);
  1311. break;
  1312. case MATHER_LAMBDA: {
  1313. Parameter *pt = NULL;
  1314. Statement *lambda_st = NULL;
  1315. if (!parserParameter(CALLPASERSSIGNATURE, &pt, false, true, false, false, MATHER_COMMA,
  1316. MATHER_ASSIGNMENT, -1)) {
  1317. freeToken(value_token, true);
  1318. syntaxError(pm, syntax_error, value_token->line, 1, "Don't get a lambda parameter");
  1319. goto return_;
  1320. }
  1321. if (!checkToken(pm, MATHER_COLON)) {
  1322. lambda_st = makeStatement(value_token->line, pm->file);
  1323. goto not_lambda_st;
  1324. }
  1325. if (!callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, &lambda_st,
  1326. "Don't get a lambda operation")) {
  1327. freeToken(value_token, true);
  1328. goto return_;
  1329. }
  1330. not_lambda_st:
  1331. st = makeLambdaStatement(lambda_st, pt);
  1332. break;
  1333. }
  1334. case MATHER_VAR:
  1335. st = makeBaseVarStatement(value_token->data.str, NULL, value_token->line, pm->file);
  1336. break;
  1337. case MATHER_SVAR: {
  1338. Statement *svar_st = NULL;
  1339. if (!callChildStatement(CALLPASERSSIGNATURE, parserBaseValue, BASEVALUE, &svar_st, NULL)) {
  1340. syntaxError(pm, syntax_error, value_token->line, 1, "Don't get super var after $");
  1341. freeToken(value_token, true);
  1342. goto return_;
  1343. }
  1344. st = makeBaseSVarStatement(svar_st, NULL);
  1345. break;
  1346. }
  1347. case MATHER_LB: {
  1348. int tmp;
  1349. Statement *tmp_st = NULL;
  1350. lexEnter(pm, true);
  1351. tmp = getOperation(CALLPASERSSIGNATURE, MATHER_RB, &tmp_st, "base value");
  1352. lexEnter(pm, false);
  1353. if (tmp == 0) {
  1354. freeToken(value_token, true);
  1355. syntaxError(pm, syntax_error, value_token->line, 1, "Don't get operation from Base Value");
  1356. goto return_;
  1357. } else if (tmp == -1) {
  1358. freeToken(value_token, true);
  1359. syntaxError(pm, syntax_error, value_token->line, 1, "Don't get ] from list/var");
  1360. goto return_; // 优化goto return freeToken
  1361. }
  1362. if (MATHER_VAR == readBackToken(pm)) {
  1363. Token *var_token;
  1364. var_token = popNewToken(pm->tm);
  1365. st = makeBaseVarStatement(var_token->data.str, tmp_st, var_token->line, pm->file);
  1366. freeToken(var_token, false);
  1367. } else {
  1368. if (tmp_st == NULL)
  1369. st = makeTupleStatement(NULL, value_list, value_token->line, pm->file);
  1370. else if (tmp_st->type == base_list && tmp_st->u.base_list.type == value_tuple) {
  1371. tmp_st->u.base_list.type = value_list;
  1372. st = tmp_st;
  1373. } else
  1374. st = makeTupleStatement(makeValueParameter(tmp_st), value_list, value_token->token_type, pm->file);
  1375. }
  1376. break;
  1377. }
  1378. case MATHER_LP: {
  1379. int tmp;
  1380. lexEnter(pm, true);
  1381. tmp = getOperation(CALLPASERSSIGNATURE, MATHER_RP, &st, "base value");
  1382. lexEnter(pm, false);
  1383. if (tmp == 0) {
  1384. freeToken(value_token, true);
  1385. syntaxError(pm, syntax_error, value_token->line, 1, "Don't get operation from Base Value");
  1386. goto return_;
  1387. } else if (tmp == -1) {
  1388. freeToken(value_token, true);
  1389. syntaxError(pm, syntax_error, value_token->line, 1, "Don't get ) from Base Value");
  1390. goto return_;
  1391. }
  1392. break;
  1393. }
  1394. case MATHER_LC: {
  1395. Parameter *pt = NULL;
  1396. int parser_status;
  1397. parser_status = parserParameter(CALLPASERSSIGNATURE, &pt, true, false, false, true, MATHER_COMMA,
  1398. MATHER_COLON, -1);
  1399. if (!parser_status) {
  1400. freeToken(value_token, true);
  1401. syntaxError(pm, syntax_error, value_token->line, 1, "Don't get a dict parameter");
  1402. goto return_;
  1403. }
  1404. if (!checkToken(pm, MATHER_RC)) {
  1405. freeToken(value_token, true);
  1406. freeParameter(pt, true);
  1407. syntaxError(pm, syntax_error, value_token->line, 1, "Don't get a } after dict");
  1408. goto return_;
  1409. }
  1410. st = makeBaseDictStatement(pt, value_token->line, pm->file);
  1411. break;
  1412. }
  1413. case MATHER_BLOCK: {
  1414. Statement *block = NULL;
  1415. if (!callParserCode(CALLPASERSSIGNATURE, &block, "Don't get a while code", value_token->line)) {
  1416. syntaxError(pm, syntax_error, value_token->line, 1, "Don't get block command");
  1417. freeToken(value_token, true);
  1418. goto return_;
  1419. }
  1420. st = makeOperationStatement(OPT_BLOCK, block, NULL);
  1421. break;
  1422. }
  1423. case MATHER_PRIVATE:
  1424. case MATHER_PROTECT:
  1425. case MATHER_PUBLIC: {
  1426. if (MATHER_COLON != readBackToken(pm)) {
  1427. syntaxError(pm, syntax_error, value_token->line, 1, "Don't get a : after aut token");
  1428. freeToken(value_token, true);
  1429. goto return_;
  1430. }
  1431. delToken(pm);
  1432. if (!callChildStatement(CALLPASERSSIGNATURE, parserBaseValue, BASEVALUE, &st, "Don't get Base Value after aut token")) {
  1433. freeToken(value_token, true);
  1434. goto return_;
  1435. }
  1436. switch (value_token->token_type) {
  1437. case MATHER_PROTECT:
  1438. st->aut = protect_aut;
  1439. break;
  1440. case MATHER_PRIVATE:
  1441. st->aut = private_aut;
  1442. break;
  1443. case MATHER_PUBLIC:
  1444. st->aut = public_aut;
  1445. break;
  1446. }
  1447. break;
  1448. }
  1449. default:{
  1450. backToken_(pm, value_token);
  1451. goto return_;
  1452. }
  1453. }
  1454. freeToken(value_token, false);
  1455. addStatementToken(BASEVALUE, st, pm);
  1456. return_: return;
  1457. }