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