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) || pt == NULL) {
  395. syntaxError(pm, syntax_error, line, 1, "Don't get any value to import");
  396. freeStatement(opt);
  397. goto return_;
  398. }
  399. if (checkToken(pm, MATHER_AS) && (!parserParameter(CALLPASERSSIGNATURE, &as, false, true, false, false, MATHER_COMMA, MATHER_ASSIGNMENT) || as == NULL)) {
  400. freeParameter(pt, true);
  401. syntaxError(pm, syntax_error, opt->line, 1, "Don't get any value after import");
  402. freeStatement(opt);
  403. goto return_;
  404. }
  405. if (as == NULL && !checkFormal(pt)){
  406. freeParameter(pt, true);
  407. syntaxError(pm, syntax_error, opt->line, 1, "Don't get success value to import");
  408. freeStatement(opt);
  409. goto return_;
  410. }
  411. mul_:
  412. st = makeFromImportStatement(opt, as, pt, is_lock);
  413. }
  414. addStatementToken(IMPORT, st, pm);
  415. return_:
  416. return;
  417. }
  418. /**
  419. * 控制语句匹配
  420. * parserControl
  421. * | (control token) NULL
  422. * | (control token) parserOperation
  423. * @param callBack statement生成函数
  424. * @param type 输出token的类型
  425. * @param must_operation 必须匹配 operation
  426. */
  427. void parserVarControl(PASERSSIGNATURE) {
  428. Parameter *var = NULL;
  429. Statement *st = NULL;
  430. Token *tmp = NULL;
  431. int token_type = readBackToken(pm);
  432. long int line = delToken(pm);
  433. if (!parserParameter(CALLPASERSSIGNATURE, &var, false, true, true, true, MATHER_COMMA, MATHER_ASSIGNMENT) || var == NULL) {
  434. syntaxError(pm, syntax_error, line, 1, "Don't get any var");
  435. goto return_;
  436. }
  437. st = makeDefaultVarStatement(var, line, pm->file, token_type == MATHER_DEFAULT ? default_ : token_type == MATHER_GLOBAL ? global_ : nonlocal_);
  438. addStatementToken(VARCONTROL, st, pm);
  439. return_:
  440. return;
  441. }
  442. /**
  443. * 控制语句匹配
  444. * parserControl
  445. * | (control token) NULL
  446. * | (control token) parserOperation
  447. * @param callBack statement生成函数
  448. * @param type 输出token的类型
  449. * @param must_operation 必须匹配 operation
  450. */
  451. void parserControl(PASERSSIGNATURE, MakeControlFunction callBack, int type, bool must_operation, char *message) {
  452. Statement *opt = NULL;
  453. Statement *st = NULL;
  454. Token *tmp = NULL;
  455. long int line = delToken(pm);
  456. parserOperation(CALLPASERSSIGNATURE);
  457. if (call_success(pm) && readBackToken(pm) == OPERATION){
  458. tmp = popNewToken(pm->tm);
  459. opt = tmp->data.st;
  460. freeToken(tmp, false);
  461. }
  462. else if (must_operation)
  463. goto error;
  464. st = callBack(opt, line, pm->file);
  465. addStatementToken(type, st, pm);
  466. return;
  467. error:
  468. syntaxError(pm, syntax_error, line, 1, message);
  469. }
  470. void parserDo(PASERSSIGNATURE){
  471. Statement *st = NULL;
  472. Statement *do_code = NULL;
  473. long int line = delToken(pm);
  474. if (readBackToken(pm) == MATHER_WHILE){ // do...while语句
  475. if (!callChildStatement(CALLPASERSSIGNATURE, parserWhile, WHILE_BRANCH, &st, "Don't get a while code"))
  476. goto error_;
  477. st->u.while_branch.type = do_while_;
  478. }
  479. else {
  480. if (!callParserCode(CALLPASERSSIGNATURE, &do_code, "Don't get a if...else code", line))
  481. goto error_;
  482. again:
  483. switch (readBackToken(pm)){
  484. case MATHER_IF: {
  485. StatementList *do_sl = NULL;
  486. if (!callChildStatement(CALLPASERSSIGNATURE, parserIf, IF_BRANCH, &st, "Don't get a if code after do"))
  487. goto error_;
  488. do_sl = makeStatementList(NULL, NULL, do_code, do_b);
  489. do_sl->next = st->u.if_branch.if_list;
  490. st->u.if_branch.if_list = do_sl;
  491. break;
  492. }
  493. case MATHER_WHILE:
  494. if (!callChildStatement(CALLPASERSSIGNATURE, parserWhile, WHILE_BRANCH, &st, "Don't get a while code after do"))
  495. goto error_;
  496. st->u.while_branch.first = do_code;
  497. break;
  498. case MATHER_FOR:
  499. if (!callChildStatement(CALLPASERSSIGNATURE, parserFor, FOR_BRANCH, &st, "Don't get a for code after do"))
  500. goto error_;
  501. st->u.for_branch.first_do = do_code;
  502. break;
  503. case MATHER_DEF:
  504. if (!callChildStatement(CALLPASERSSIGNATURE, parserDef, FUNCTION, &st, "Don't get a function def after do"))
  505. goto error_;
  506. st->u.set_function.first_do = do_code;
  507. break;
  508. case MATHER_DO: {
  509. long int tmp_line = delToken(pm);
  510. if (readBackToken(pm) != MATHER_WHILE){
  511. syntaxError(pm, syntax_error, tmp_line, 1, "Don't get while after do");
  512. goto error_;
  513. }
  514. if (!callChildStatement(CALLPASERSSIGNATURE, parserWhile, WHILE_BRANCH, &st, "Don't get a while code"))
  515. goto error_;
  516. st->u.while_branch.type = do_while_;
  517. st->u.while_branch.first = do_code;
  518. break;
  519. }
  520. case MATHER_ENTER:
  521. delToken(pm);
  522. goto again;
  523. default: {
  524. Token *tmp = popNewToken(pm->tm);
  525. syntaxError(pm, syntax_error, tmp->line, 1, "Get don't support branch after do");
  526. backToken_(pm, tmp);
  527. goto error_;
  528. }
  529. }
  530. }
  531. addStatementToken(DO_BRANCH, st, pm);
  532. return;
  533. error_:
  534. freeStatement(do_code);
  535. freeStatement(st);
  536. }
  537. void parserFor(PASERSSIGNATURE){
  538. Statement *st = NULL;
  539. Statement *else_st = NULL;
  540. Statement *finally_st = NULL;
  541. Statement *do_st = NULL;
  542. StatementList *sl = NULL;
  543. long int line = delToken(pm);
  544. {
  545. Statement *code_tmp = NULL, *var_tmp = NULL, *iter_tmp = NULL;
  546. if (!callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, &var_tmp, "Don't get a for var"))
  547. goto error_;
  548. if (!checkToken(pm, MATHER_IN)){
  549. freeStatement(var_tmp);
  550. syntaxError(pm, syntax_error, line, 1, "Don't get in after for");
  551. goto error_;
  552. }
  553. if (!callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, &iter_tmp, "Don't get a for condition")) {
  554. freeStatement(var_tmp);
  555. goto error_;
  556. }
  557. if (!callParserCode(CALLPASERSSIGNATURE, &code_tmp, "Don't get a for code", line)) {
  558. freeStatement(iter_tmp);
  559. freeStatement(var_tmp);
  560. goto error_;
  561. }
  562. sl = makeStatementList(iter_tmp, var_tmp, code_tmp, for_b);
  563. }
  564. again:
  565. switch (readBackToken(pm)) {
  566. case MATHER_DO: {
  567. if (do_st != NULL || else_st != NULL)
  568. goto default_;
  569. long int tmp_line = delToken(pm);
  570. if (!callParserCode(CALLPASERSSIGNATURE, &do_st, "Don't get a for...do code", tmp_line))
  571. goto error_;
  572. goto again;
  573. }
  574. case MATHER_ELSE: {
  575. long int tmp_line = delToken(pm);
  576. if (else_st != NULL) {
  577. syntaxError(pm, syntax_error, tmp_line, 1, "get else after else\n");
  578. goto error_;
  579. }
  580. if (!callParserCode(CALLPASERSSIGNATURE, &else_st, "Don't get a for...else code", tmp_line))
  581. goto error_;
  582. goto again;
  583. }
  584. case MATHER_FINALLY: {
  585. long int tmp_line = delToken(pm);
  586. if (!callParserCode(CALLPASERSSIGNATURE, &finally_st, "Don't get a for...finally code", tmp_line))
  587. goto error_;
  588. break;
  589. }
  590. case MATHER_ENTER:
  591. delToken(pm);
  592. goto again;
  593. case MATHER_SEMICOLON:
  594. break;
  595. default: {
  596. default_:
  597. addLexToken(pm, MATHER_ENTER);
  598. break;
  599. }
  600. }
  601. st = makeForStatement(line, pm->file);
  602. st->u.for_branch.for_list = sl;
  603. st->u.for_branch.else_list = else_st;
  604. st->u.for_branch.finally = finally_st;
  605. st->u.for_branch.after_do = do_st;
  606. addStatementToken(FOR_BRANCH, st, pm);
  607. return;
  608. error_:
  609. freeStatement(else_st);
  610. freeStatement(finally_st);
  611. freeStatement(do_st);
  612. freeStatementList(sl);
  613. }
  614. void parserWith(PASERSSIGNATURE){
  615. Statement *st = NULL;
  616. Statement *code_tmp = NULL;
  617. Statement *var_tmp = NULL;
  618. Statement *condition_tmp = NULL;
  619. Statement *else_st = NULL;
  620. Statement *finally_st = NULL;
  621. StatementList *sl = NULL;
  622. long int line = 0;
  623. long int tmp_line;
  624. line = delToken(pm);
  625. if (!callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, &condition_tmp, "Don't get a with operation"))
  626. goto error_;
  627. if (!callParserAs(CALLPASERSSIGNATURE, &var_tmp, "Don't get a with var"))
  628. goto error_;
  629. if (!callParserCode(CALLPASERSSIGNATURE, &code_tmp, "Don't get a with code", line))
  630. goto error_;
  631. sl = connectStatementList(sl, makeStatementList(condition_tmp, var_tmp, code_tmp, with_b));
  632. condition_tmp = NULL;
  633. var_tmp = NULL;
  634. code_tmp = NULL;
  635. for (int tk=readBackToken(pm); tk == MATHER_ENTER; tk = readBackToken(pm))
  636. delToken(pm);
  637. if (readBackToken(pm) == MATHER_ELSE) {
  638. tmp_line = delToken(pm);
  639. if (!callParserCode(CALLPASERSSIGNATURE, &else_st, "Don't get a with...else code", tmp_line))
  640. goto error_;
  641. }
  642. for (int tk=readBackToken(pm); tk == MATHER_ENTER; tk = readBackToken(pm))
  643. delToken(pm);
  644. if (readBackToken(pm) == MATHER_FINALLY) {
  645. tmp_line = delToken(pm);
  646. if (!callParserCode(CALLPASERSSIGNATURE, &finally_st, "Don't get a wilt...finally code", tmp_line))
  647. goto error_;
  648. }
  649. addLexToken(pm, MATHER_ENTER);
  650. st = makeWithStatement(line, pm->file);
  651. st->u.with_branch.with_list = sl;
  652. st->u.with_branch.else_list = else_st;
  653. st->u.with_branch.finally = finally_st;
  654. addStatementToken(WITH_BRANCH, st, pm);
  655. return;
  656. error_:
  657. freeStatement(condition_tmp);
  658. freeStatement(var_tmp);
  659. freeStatement(else_st);
  660. freeStatement(finally_st);
  661. freeStatementList(sl);
  662. }
  663. /**
  664. * 条件分支匹配
  665. * parserIf:
  666. * | MATHER_IF parserOperation (MATHER_AS parserOperation) callParserCode
  667. * | parserIf MATHER_ELIF parserOperation (MATHER_AS parserOperation) callParserCode
  668. * | parserIf MATHER_DO callParserCode [不允许两次连用]
  669. * | parserIf MATHER_ELSE callParserCode [不允许再出现if和elif以及do] [只出现一次] [4]
  670. * | parserIf MATHER_FINALLY callParserCode [结尾]
  671. * 注释:会自动过滤 <ENTER> , 可以使用 <SEMICOLON> 作为结束表示
  672. * 注释:自动添加 <ENTER> 结尾符号
  673. * 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
  674. * 特别注意:自进入模式[4]后,匹配顺序自上而下不可逆
  675. * @param pm
  676. * @param inter
  677. */
  678. void parserIf(PASERSSIGNATURE){
  679. Statement *st = NULL;
  680. Statement *else_st = NULL;
  681. Statement *finally_st = NULL;
  682. StatementList *sl = NULL;
  683. bool have_if = false;
  684. long int line = 0;
  685. again:
  686. switch (readBackToken(pm)) {
  687. case MATHER_IF:
  688. if (have_if)
  689. goto default_;
  690. else
  691. have_if = true;
  692. line = delToken(pm);
  693. goto not_del;
  694. case MATHER_ELIF: {
  695. Statement *code_tmp = NULL, *var_tmp = NULL, *condition_tmp = NULL;
  696. long int tmp_line = delToken(pm);
  697. if (else_st != NULL) {
  698. syntaxError(pm, syntax_error, tmp_line, 1, "get elif after else");
  699. goto error_;
  700. }
  701. not_del:
  702. if (!callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, &condition_tmp, "Don't get a if condition"))
  703. goto error_;
  704. if (!callParserAs(CALLPASERSSIGNATURE, &var_tmp, "Don't get a while var")) {
  705. freeStatement(condition_tmp);
  706. goto error_;
  707. }
  708. if (!callParserCode(CALLPASERSSIGNATURE, &code_tmp, "Don't get a if code", tmp_line)) {
  709. freeStatement(condition_tmp);
  710. freeStatement(var_tmp);
  711. goto error_;
  712. }
  713. sl = connectStatementList(sl, makeStatementList(condition_tmp, var_tmp, code_tmp, if_b));
  714. goto again;
  715. }
  716. case MATHER_DO: {
  717. if (else_st != NULL)
  718. goto default_;
  719. Statement *code_tmp = NULL;
  720. long int tmp_line = delToken(pm);
  721. if (!callParserCode(CALLPASERSSIGNATURE, &code_tmp, "Don't get a if...do code", tmp_line))
  722. goto error_;
  723. sl = connectStatementList(sl, makeStatementList(NULL, NULL, code_tmp, do_b));
  724. goto again;
  725. }
  726. case MATHER_ELSE: {
  727. long int tmp_line = delToken(pm);
  728. if (else_st != NULL) {
  729. syntaxError(pm, syntax_error, tmp_line, 1, "get else after else");
  730. goto error_;
  731. }
  732. if (!callParserCode(CALLPASERSSIGNATURE, &else_st, "Don't get a if...else code", tmp_line))
  733. goto error_;
  734. goto again;
  735. }
  736. case MATHER_FINALLY: {
  737. long int tmp_line = delToken(pm);
  738. if (!callParserCode(CALLPASERSSIGNATURE, &finally_st, "Don't get a if...finally code", tmp_line))
  739. goto error_;
  740. break;
  741. }
  742. case MATHER_ENTER:
  743. delToken(pm);
  744. goto again;
  745. case MATHER_SEMICOLON:
  746. break;
  747. default:{
  748. default_:
  749. addLexToken(pm, MATHER_ENTER);
  750. break;
  751. }
  752. }
  753. st = makeIfStatement(line, pm->file);
  754. st->u.if_branch.if_list = sl;
  755. st->u.if_branch.else_list = else_st;
  756. st->u.if_branch.finally = finally_st;
  757. addStatementToken(IF_BRANCH, st, pm);
  758. return;
  759. error_:
  760. freeStatement(else_st);
  761. freeStatement(finally_st);
  762. freeStatementList(sl);
  763. }
  764. /**
  765. * 条件循环匹配
  766. * parserWhile:
  767. * | MATHER_WHILE parserOperation (MATHER_AS parserOperation) callParserCode
  768. * | parserWhile MATHER_DO callParserCode [只出现一次]
  769. * | parserWhile MATHER_ELSE callParserCode [只出现一次]
  770. * | parserWhile MATHER_FINALLY callParserCode [结尾]
  771. * 注释:同 ``parserIf``
  772. * 特别注意:匹配顺序自上而下不可逆
  773. * @param pm
  774. * @param inter
  775. */
  776. void parserWhile(PASERSSIGNATURE){
  777. Statement *st = NULL;
  778. Statement *else_st = NULL;
  779. Statement *finally_st = NULL;
  780. Statement *do_st = NULL;
  781. StatementList *sl = NULL;
  782. bool have_while = false;
  783. long int line = 0;
  784. again:
  785. switch (readBackToken(pm)) {
  786. case MATHER_WHILE: {
  787. if (have_while)
  788. goto default_;
  789. else
  790. have_while = true;
  791. Statement *code_tmp = NULL, *var_tmp = NULL, *condition_tmp = NULL;
  792. line = delToken(pm);
  793. if (!callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, &condition_tmp, "Don't get a while condition"))
  794. goto error_;
  795. if (!callParserAs(CALLPASERSSIGNATURE, &var_tmp, "Don't get a while var")){
  796. freeStatement(condition_tmp);
  797. goto error_;
  798. }
  799. if (!callParserCode(CALLPASERSSIGNATURE, &code_tmp, "Don't get a while code", line)) {
  800. freeStatement(condition_tmp);
  801. freeStatement(var_tmp);
  802. goto error_;
  803. }
  804. if (sl != NULL)
  805. freeStatementList(sl);
  806. sl = makeStatementList(condition_tmp, var_tmp, code_tmp, while_b);
  807. goto again;
  808. }
  809. case MATHER_DO: {
  810. if (do_st != NULL || else_st != NULL)
  811. goto default_;
  812. long int tmp_line = delToken(pm);
  813. if (!callParserCode(CALLPASERSSIGNATURE, &do_st, "Don't get a while...do code", tmp_line))
  814. goto error_;
  815. goto again;
  816. }
  817. case MATHER_ELSE: {
  818. long int tmp_line = delToken(pm);
  819. if (else_st != NULL) {
  820. syntaxError(pm, syntax_error, tmp_line, 1, "get else after else\n");
  821. goto error_;
  822. }
  823. if (!callParserCode(CALLPASERSSIGNATURE, &else_st, "Don't get a while...else code", tmp_line))
  824. goto error_;
  825. goto again;
  826. }
  827. case MATHER_FINALLY: {
  828. long int tmp_line = delToken(pm);
  829. if (!callParserCode(CALLPASERSSIGNATURE, &finally_st, "Don't get a while...finally code", tmp_line))
  830. goto error_;
  831. break;
  832. }
  833. case MATHER_ENTER:
  834. delToken(pm);
  835. goto again;
  836. case MATHER_SEMICOLON:
  837. break;
  838. default: {
  839. default_:
  840. addLexToken(pm, MATHER_ENTER);
  841. break;
  842. }
  843. }
  844. st = makeWhileStatement(line, pm->file);
  845. st->u.while_branch.while_list = sl;
  846. st->u.while_branch.else_list = else_st;
  847. st->u.while_branch.finally = finally_st;
  848. st->u.while_branch.after = do_st;
  849. addStatementToken(WHILE_BRANCH, st, pm);
  850. return;
  851. error_:
  852. freeStatement(else_st);
  853. freeStatement(finally_st);
  854. freeStatement(do_st);
  855. freeStatementList(sl);
  856. }
  857. /**
  858. * 异常捕获分支匹配
  859. * parserTry:
  860. * | MATHER_TRY callParserCode
  861. * | parserTry MATHER_EXCEPT (MATHER_AS parserOperation) callParserCode
  862. * | parserTry MATHER_ELSE callParserCode [只出现一次]
  863. * | parserTry MATHER_FINALLY callParserCode [结尾]
  864. * 注释:同 ``parserIf``
  865. * 特别注意:匹配顺序自上而下不可逆
  866. * @param pm
  867. * @param inter
  868. */
  869. void parserTry(PASERSSIGNATURE){
  870. Statement *st = NULL;
  871. Statement *try_st = NULL;
  872. Statement *else_st = NULL;
  873. Statement *finally_st = NULL;
  874. StatementList *sl = NULL;
  875. long int line = 0;
  876. again:
  877. switch (readBackToken(pm)) {
  878. case MATHER_TRY:{
  879. if (try_st != NULL)
  880. goto default_;
  881. line = delToken(pm);
  882. if (!callParserCode(CALLPASERSSIGNATURE, &try_st, "Don't get a try code", line))
  883. goto error_;
  884. goto again;
  885. }
  886. case MATHER_EXCEPT: {
  887. Statement *code_tmp = NULL, *var_tmp = NULL, *condition_tmp = NULL;
  888. long int tmp_line = delToken(pm);
  889. if (else_st != NULL) {
  890. syntaxError(pm, syntax_error, tmp_line, 1, "get except after else");
  891. goto error_;
  892. }
  893. if (readBackToken(pm) != MATHER_LC)
  894. callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, &condition_tmp, NULL);
  895. if (!callParserAs(CALLPASERSSIGNATURE, &var_tmp, "Don't get a except var")){
  896. freeStatement(condition_tmp);
  897. goto error_;
  898. }
  899. if (!callParserCode(CALLPASERSSIGNATURE, &code_tmp, "Don't get a except code", tmp_line)) {
  900. freeStatement(condition_tmp);
  901. freeStatement(var_tmp);
  902. goto error_;
  903. }
  904. sl = connectStatementList(sl, makeStatementList(condition_tmp, var_tmp, code_tmp, except_b));
  905. goto again;
  906. }
  907. case MATHER_ELSE: {
  908. long int tmp_line = delToken(pm);
  909. if (else_st != NULL) {
  910. syntaxError(pm, syntax_error, tmp_line, 1, "get else after else");
  911. goto error_;
  912. }
  913. if (!callParserCode(CALLPASERSSIGNATURE, &else_st, "Don't get a try...else code", tmp_line))
  914. goto error_;
  915. goto again;
  916. }
  917. case MATHER_FINALLY: {
  918. long int tmp_line = delToken(pm);
  919. if (!callParserCode(CALLPASERSSIGNATURE, &finally_st, "Don't get a try...finally code", tmp_line))
  920. goto error_;
  921. break;
  922. }
  923. case MATHER_ENTER:
  924. delToken(pm);
  925. goto again;
  926. case MATHER_SEMICOLON:
  927. break;
  928. default: {
  929. default_:
  930. addLexToken(pm, MATHER_ENTER);
  931. break;
  932. }
  933. }
  934. st = makeTryStatement(line, pm->file);
  935. st->u.try_branch.try = try_st;
  936. st->u.try_branch.except_list = sl;
  937. st->u.try_branch.else_list = else_st;
  938. st->u.try_branch.finally = finally_st;
  939. addStatementToken(TRY_BRANCH, st, pm);
  940. return;
  941. error_:
  942. freeStatement(try_st);
  943. freeStatement(else_st);
  944. freeStatement(finally_st);
  945. freeStatementList(sl);
  946. }
  947. /**
  948. * 函数定义匹配
  949. * parserDef:
  950. * | parserBaseValue MATHER_LP parserParameter(is_formal) MATHER_RP callParserCode
  951. * 注释:自动添加 <ENTER> 结尾符号
  952. * @param pm
  953. * @param inter
  954. */
  955. void parserDef(PASERSSIGNATURE){
  956. Statement *st = NULL;
  957. Statement *name_tmp = NULL;
  958. Statement *code_tmp = NULL;
  959. Parameter *pt = NULL;
  960. int type = readBackToken(pm);
  961. long int line = delToken(pm);
  962. if (!callChildStatement(CALLPASERSSIGNATURE, parserBaseValue, BASEVALUE, &name_tmp,
  963. "Don't get a function/class name"))
  964. goto error_;
  965. if (!checkToken(pm, MATHER_LP))
  966. goto get_code;
  967. if (!parserParameter(CALLPASERSSIGNATURE, &pt, true, true, false, false, MATHER_COMMA, MATHER_ASSIGNMENT)) {
  968. lexEnter(pm, false);
  969. syntaxError(pm, syntax_error, line, 1, "Don't get a function/class parameter");
  970. goto error_;
  971. }
  972. if (!checkToken(pm, MATHER_RP)) {
  973. syntaxError(pm, syntax_error, line, 1, "Don't get a function/class ) after parameter");
  974. goto error_;
  975. }
  976. get_code:
  977. if (!callParserCode(CALLPASERSSIGNATURE, &code_tmp, "Don't get a function code", line)) {
  978. syntaxError(pm, syntax_error, line, 1, "Don't get a function code");
  979. goto error_;
  980. }
  981. if (type == MATHER_DEF)
  982. st = makeFunctionStatement(name_tmp, code_tmp, pt);
  983. else
  984. st = makeClassStatement(name_tmp, code_tmp, pt);
  985. addLexToken(pm, MATHER_ENTER);
  986. addStatementToken(FUNCTION, st, pm);
  987. return;
  988. error_:
  989. freeStatement(name_tmp);
  990. freeStatement(code_tmp);
  991. freeParameter(pt, true);
  992. }
  993. /**
  994. * 函数定义匹配
  995. * parserCode:
  996. * | MATHER_LC parserCommandList MATHER_RC
  997. * 注释:自动忽略MATHER_LC前的空格
  998. * @param pm
  999. * @param inter
  1000. */
  1001. void parserCode(PASERSSIGNATURE) {
  1002. long int line = 0;
  1003. Statement *st = makeStatement(line, pm->file);
  1004. while (true){
  1005. if (readBackToken(pm) != MATHER_LC)
  1006. goto again_;
  1007. line = delToken(pm);
  1008. break;
  1009. again_:
  1010. if (!checkToken(pm, MATHER_ENTER))
  1011. goto return_;
  1012. }
  1013. parserCommandList(CALLPASERSSIGNATURE, false, false, st);
  1014. if (!call_success(pm))
  1015. goto error_;
  1016. if (!checkToken(pm, MATHER_RC)) {
  1017. syntaxError(pm, syntax_error, line, 1, "Don't get the }"); // 使用{的行号
  1018. goto error_;
  1019. }
  1020. return_:
  1021. addStatementToken(CODE, st, pm);
  1022. return;
  1023. error_:
  1024. freeStatement(st);
  1025. }
  1026. /**
  1027. * 表达式匹配
  1028. * parserOperation:
  1029. * | parserAssignment
  1030. */
  1031. void parserOperation(PASERSSIGNATURE){
  1032. Statement *operation_st = NULL;
  1033. if (!callChildStatement(CALLPASERSSIGNATURE, parserAssignment, ASSIGNMENT, &operation_st, NULL))
  1034. goto return_;
  1035. addStatementToken(OPERATION, operation_st, pm);
  1036. return_:
  1037. return;
  1038. }
  1039. /**
  1040. * 赋值表达式匹配
  1041. * parserAssignment:
  1042. * | parserTuple
  1043. * | parserAssignment ASSIGNMENT parserTuple [2]
  1044. * 注意:在链接statement的时候, 模式[2]相当于 parserTuple ASSIGNMENT parserAssignment
  1045. */
  1046. bool checkAssignmentLeft(PASERSSIGNATURE, Statement *left){
  1047. if (left->type == call_function && !checkFormal(left->u.call_function.parameter)){
  1048. syntaxError(pm, syntax_error, left->line, 1, "Don't get success function definition from Assignment");
  1049. return false;
  1050. }
  1051. return true;
  1052. }
  1053. bool switchAssignment(PASERSSIGNATURE, int symbol, Statement **st){
  1054. switch (symbol) { // 此处保持使用switch分支
  1055. case MATHER_ASSIGNMENT:
  1056. *st = makeOperationBaseStatement(OPT_ASS, 0, pm->file);
  1057. break;
  1058. default:
  1059. return false;
  1060. }
  1061. return true;
  1062. }
  1063. void parserAssignment(PASERSSIGNATURE){
  1064. return twoOperation(CALLPASERSSIGNATURE, parserTuple, switchAssignment, checkAssignmentLeft, TUPLE, ASSIGNMENT,
  1065. "polynomial", "assignment", true);
  1066. }
  1067. /**
  1068. * 元组匹配
  1069. * parserTuple:
  1070. * | parserPolynomial
  1071. * | parserTuple COMMA parserPolynomial
  1072. * @param pm
  1073. * @param inter
  1074. */
  1075. void parserTuple(PASERSSIGNATURE){
  1076. Parameter *pt = NULL;
  1077. Statement *st = NULL;
  1078. Token *tmp = NULL;
  1079. long int line = 0;
  1080. if (readBackToken(pm) == MATHER_MUL) {
  1081. line = pm->tm->ts->token_list->line;
  1082. goto parserPt;
  1083. }
  1084. if (!callChildToken(CALLPASERSSIGNATURE, parserPolynomial, POLYNOMIAL, &tmp, NULL, syntax_error))
  1085. goto return_;
  1086. if (readBackToken(pm) != MATHER_COMMA){
  1087. tmp->token_type = TUPLE;
  1088. addToken_(pm ,tmp);
  1089. goto return_;
  1090. }
  1091. line = tmp->line;
  1092. addToken_(pm ,tmp);
  1093. parserPt:
  1094. if (!parserParameter(CALLPASERSSIGNATURE, &pt, false, false, true, false, MATHER_COMMA, MATHER_ASSIGNMENT)) {
  1095. syntaxError(pm, syntax_error, line, 1, "Don't get tuple element");
  1096. goto return_;
  1097. }
  1098. st = makeTupleStatement(pt, value_tuple, pt->data.value->line, pm->file);
  1099. addStatementToken(TUPLE, st, pm);
  1100. return_:
  1101. return;
  1102. }
  1103. /**
  1104. * 多项式匹配
  1105. * parserPolynomial:
  1106. * | parserBaseValue
  1107. * | parserPolynomial OPT_ADD parserFactor
  1108. * | parserPolynomial OPT_SUB parserFactor
  1109. */
  1110. bool switchPolynomial(PASERSSIGNATURE, int symbol, Statement **st){
  1111. switch (symbol) {
  1112. case MATHER_ADD:
  1113. *st = makeOperationBaseStatement(OPT_ADD, 0, pm->file);
  1114. break;
  1115. case MATHER_SUB:
  1116. *st = makeOperationBaseStatement(OPT_SUB, 0, pm->file);
  1117. break;
  1118. default:
  1119. return false;
  1120. }
  1121. return true;
  1122. }
  1123. void parserPolynomial(PASERSSIGNATURE){
  1124. return twoOperation(CALLPASERSSIGNATURE, parserFactor, switchPolynomial, NULL, FACTOR, POLYNOMIAL,
  1125. "factor", "polynomial", false);
  1126. }
  1127. /**
  1128. * 因式匹配
  1129. * parserFactor:
  1130. * | parserCallBack
  1131. * | switchFactor OPT_ADD parserCallBack
  1132. * | switchFactor OPT_SUB parserCallBack
  1133. */
  1134. bool switchFactor(PASERSSIGNATURE, int symbol, Statement **st){
  1135. switch (symbol) {
  1136. case MATHER_MUL:
  1137. *st = makeOperationBaseStatement(OPT_MUL, 0, pm->file);
  1138. break;
  1139. case MATHER_DIV:
  1140. *st = makeOperationBaseStatement(OPT_DIV, 0, pm->file);
  1141. break;
  1142. default:
  1143. return false;
  1144. }
  1145. return true;
  1146. }
  1147. void parserFactor(PASERSSIGNATURE){
  1148. return twoOperation(CALLPASERSSIGNATURE, parserCallBack, switchFactor, NULL, CALLBACK, FACTOR,
  1149. "call back", "factor", false);
  1150. }
  1151. /**
  1152. * 函数回调匹配
  1153. * parserCallBack:
  1154. * | parserBaseValue
  1155. * | parserCallBack MATHER_LP parserParameter MATHER_RP
  1156. */
  1157. bool tailCall(PASERSSIGNATURE, Token *left_token, Statement **st){
  1158. Parameter *pt = NULL;
  1159. long int line = delToken(pm);
  1160. if (checkToken(pm, MATHER_RP))
  1161. goto not_pt;
  1162. if (!parserParameter(CALLPASERSSIGNATURE, &pt, true, false, false, false, MATHER_COMMA, MATHER_ASSIGNMENT)) {
  1163. syntaxError(pm, syntax_error, line, 1, "Don't get call parameter");
  1164. return false;
  1165. }
  1166. if (!checkToken(pm, MATHER_RP)) {
  1167. freeParameter(pt, true);
  1168. syntaxError(pm, syntax_error, line, 1, "Don't get ) from call back");
  1169. return false;
  1170. }
  1171. not_pt:
  1172. *st = makeCallStatement(left_token->data.st, pt);
  1173. return true;
  1174. }
  1175. bool tailSlice(PASERSSIGNATURE, Token *left_token, Statement **st){
  1176. Parameter *pt = NULL;
  1177. Token *tmp = NULL;
  1178. enum SliceType type; // 0-slice 1-down
  1179. long int line = delToken(pm);
  1180. if (!callChildToken(CALLPASERSSIGNATURE, parserPolynomial, POLYNOMIAL, &tmp, "Don't get slice/down element", syntax_error))
  1181. return false;
  1182. else if (readBackToken(pm) == MATHER_COLON)
  1183. type = SliceType_slice_;
  1184. else
  1185. type = SliceType_down_;
  1186. line = tmp->line;
  1187. addToken_(pm ,tmp);
  1188. if (!parserParameter(CALLPASERSSIGNATURE, &pt, true, true, true, true, (type == SliceType_down_ ? MATHER_COMMA : MATHER_COLON), MATHER_ASSIGNMENT)) {
  1189. syntaxError(pm, syntax_error, line, 1, "Don't get slice element");
  1190. return false;
  1191. }
  1192. if (!checkToken(pm, MATHER_RB)){
  1193. freeParameter(pt, true);
  1194. syntaxError(pm, syntax_error, line, 1, "Don't get ] from slice");
  1195. return false;
  1196. }
  1197. *st = makeSliceStatement(left_token->data.st, pt, type);
  1198. return true;
  1199. }
  1200. bool taliPoint(PASERSSIGNATURE, Token *left_token, Statement **st){
  1201. Statement *right_st = NULL;
  1202. delToken(pm);
  1203. if (!callChildStatement(CALLPASERSSIGNATURE, parserBaseValue, BASEVALUE, &right_st, "Don't get a BaseValue after point"))
  1204. return false;
  1205. *st = makeOperationStatement(OPT_POINT, left_token->data.st, right_st);
  1206. return true;
  1207. }
  1208. bool taliLink(PASERSSIGNATURE, Token *left_token, Statement **st){
  1209. Statement *right_st = NULL;
  1210. delToken(pm);
  1211. if (!callChildStatement(CALLPASERSSIGNATURE, parserBaseValue, BASEVALUE, &right_st, "Don't get a BaseValue after link"))
  1212. return false;
  1213. *st = makeOperationStatement(OPT_LINK, left_token->data.st, right_st);
  1214. return true;
  1215. }
  1216. void parserCallBack(PASERSSIGNATURE){
  1217. while(true){
  1218. int tk;
  1219. Token *left_token = NULL;
  1220. struct Statement *st = NULL;
  1221. if (readBackToken(pm) != CALLBACK){
  1222. if (!callChildStatement(CALLPASERSSIGNATURE, parserBaseValue, BASEVALUE, &st, NULL))
  1223. goto return_;
  1224. addStatementToken(CALLBACK, st, pm);
  1225. continue;
  1226. }
  1227. left_token = popNewToken(pm->tm);
  1228. tk = readBackToken(pm);
  1229. if (tk == MATHER_LB && !tailSlice(CALLPASERSSIGNATURE, left_token, &st) ||
  1230. tk == MATHER_LP && !tailCall(CALLPASERSSIGNATURE, left_token, &st) ||
  1231. tk == MATHER_POINT && !taliPoint(CALLPASERSSIGNATURE, left_token, &st) ||
  1232. tk == MATHER_LINK && !taliLink(CALLPASERSSIGNATURE, left_token, &st)) {
  1233. freeToken(left_token, true);
  1234. goto return_;
  1235. } else if (tk != MATHER_LB && tk != MATHER_LP && tk != MATHER_POINT && tk != MATHER_LINK) {
  1236. backToken_(pm, left_token);
  1237. goto return_;
  1238. }
  1239. addStatementToken(CALLBACK, st, pm);
  1240. freeToken(left_token, false);
  1241. }
  1242. return_: return;
  1243. }
  1244. /**
  1245. * 字面量匹配
  1246. * parserBaseValue:
  1247. * | MATHER_NUMBER
  1248. * | MATHER_STRING
  1249. * | MATHER_VAR
  1250. * | MATHER_LAMBDA parserParameter MATHER_COLON parserOperation
  1251. * | MATHER_LP parserOperation MATHER_LP
  1252. * | MATHER_LP parserOperation MATHER_LP -> list
  1253. * | MATHER_LP parserOperation MATHER_LP MATHER_VAR
  1254. * | MATHER_LC parserParameter(dict) MATHER_LC
  1255. */
  1256. int getOperation(PASERSSIGNATURE, int right_type, Statement **st, char *name){
  1257. *st = NULL;
  1258. if (checkToken(pm, right_type))
  1259. goto return_;
  1260. if (!callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, st, NULL))
  1261. return 0;
  1262. if (!checkToken(pm, right_type)){
  1263. freeStatement(*st);
  1264. return -1;
  1265. }
  1266. return_:
  1267. return 1;
  1268. }
  1269. void parserBaseValue(PASERSSIGNATURE){
  1270. Token *value_token = popNewToken(pm->tm);
  1271. Statement *st = NULL;
  1272. switch (value_token->token_type) {
  1273. case MATHER_NUMBER : {
  1274. Statement *tmp = NULL;
  1275. tmp = makeBaseStrValueStatement(value_token->data.str, number_str, value_token->line, pm->file);
  1276. if (*value_token->data.second_str == NUL)
  1277. st = tmp;
  1278. else {
  1279. Statement *second_var = makeBaseVarStatement(value_token->data.second_str, NULL, value_token->line,
  1280. pm->file);
  1281. st = makeCallStatement(second_var, makeValueParameter(tmp));
  1282. }
  1283. break;
  1284. }
  1285. case MATHER_STRING:{
  1286. Statement *tmp = NULL;
  1287. tmp = makeBaseStrValueStatement(value_token->data.str, string_str, value_token->line, pm->file);
  1288. if (*value_token->data.second_str == NUL)
  1289. st = tmp;
  1290. else {
  1291. Statement *sencod_var = makeBaseVarStatement(value_token->data.second_str, NULL, value_token->line,
  1292. pm->file);
  1293. st = makeCallStatement(sencod_var, makeValueParameter(tmp));
  1294. }
  1295. break;
  1296. }
  1297. case MATHER_TRUE:
  1298. st = makeBaseValueStatement(bool_true, value_token->line, pm->file);
  1299. break;
  1300. case MATHER_FALSE:
  1301. st = makeBaseValueStatement(bool_false, value_token->line, pm->file);
  1302. break;
  1303. case MATHER_NULL:
  1304. st = makeBaseValueStatement(null_value, value_token->line, pm->file);
  1305. break;
  1306. case MATHER_PASSVALUE:
  1307. st = makeBaseValueStatement(pass_value, value_token->line, pm->file);
  1308. break;
  1309. case MATHER_LAMBDA: {
  1310. Parameter *pt = NULL;
  1311. Statement *lambda_st = NULL;
  1312. if (!parserParameter(CALLPASERSSIGNATURE, &pt, false, true, false, false, MATHER_COMMA,
  1313. MATHER_ASSIGNMENT)) {
  1314. freeToken(value_token, true);
  1315. syntaxError(pm, syntax_error, value_token->line, 1, "Don't get a lambda parameter");
  1316. goto return_;
  1317. }
  1318. if (!checkToken(pm, MATHER_COLON)) {
  1319. lambda_st = makeStatement(value_token->line, pm->file);
  1320. goto not_lambda_st;
  1321. }
  1322. if (!callChildStatement(CALLPASERSSIGNATURE, parserOperation, OPERATION, &lambda_st,
  1323. "Don't get a lambda operation")) {
  1324. freeToken(value_token, true);
  1325. goto return_;
  1326. }
  1327. not_lambda_st:
  1328. st = makeLambdaStatement(lambda_st, pt);
  1329. break;
  1330. }
  1331. case MATHER_VAR:
  1332. st = makeBaseVarStatement(value_token->data.str, NULL, value_token->line, pm->file);
  1333. break;
  1334. case MATHER_SVAR: {
  1335. Statement *svar_st = NULL;
  1336. if (!callChildStatement(CALLPASERSSIGNATURE, parserBaseValue, BASEVALUE, &svar_st, NULL)) {
  1337. syntaxError(pm, syntax_error, value_token->line, 1, "Don't get super var after $");
  1338. freeToken(value_token, true);
  1339. goto return_;
  1340. }
  1341. st = makeBaseSVarStatement(svar_st, NULL);
  1342. break;
  1343. }
  1344. case MATHER_LB: {
  1345. int tmp;
  1346. Statement *tmp_st = NULL;
  1347. lexEnter(pm, true);
  1348. tmp = getOperation(CALLPASERSSIGNATURE, MATHER_RB, &tmp_st, "base value");
  1349. lexEnter(pm, false);
  1350. if (tmp == 0) {
  1351. freeToken(value_token, true);
  1352. syntaxError(pm, syntax_error, value_token->line, 1, "Don't get operation from Base Value");
  1353. goto return_;
  1354. } else if (tmp == -1) {
  1355. freeToken(value_token, true);
  1356. syntaxError(pm, syntax_error, value_token->line, 1, "Don't get ] from list/var");
  1357. goto return_; // 优化goto return freeToken
  1358. }
  1359. if (MATHER_VAR == readBackToken(pm)) {
  1360. Token *var_token;
  1361. var_token = popNewToken(pm->tm);
  1362. st = makeBaseVarStatement(var_token->data.str, tmp_st, var_token->line, pm->file);
  1363. freeToken(var_token, false);
  1364. } else {
  1365. if (tmp_st == NULL)
  1366. st = makeTupleStatement(NULL, value_list, value_token->line, pm->file);
  1367. else if (tmp_st->type == base_list && tmp_st->u.base_list.type == value_tuple) {
  1368. tmp_st->u.base_list.type = value_list;
  1369. st = tmp_st;
  1370. } else
  1371. st = makeTupleStatement(makeValueParameter(tmp_st), value_list, value_token->token_type, pm->file);
  1372. }
  1373. break;
  1374. }
  1375. case MATHER_LP: {
  1376. int tmp;
  1377. lexEnter(pm, true);
  1378. tmp = getOperation(CALLPASERSSIGNATURE, MATHER_RP, &st, "base value");
  1379. lexEnter(pm, false);
  1380. if (tmp == 0) {
  1381. freeToken(value_token, true);
  1382. syntaxError(pm, syntax_error, value_token->line, 1, "Don't get operation from Base Value");
  1383. goto return_;
  1384. } else if (tmp == -1) {
  1385. freeToken(value_token, true);
  1386. syntaxError(pm, syntax_error, value_token->line, 1, "Don't get ) from Base Value");
  1387. goto return_;
  1388. }
  1389. break;
  1390. }
  1391. case MATHER_LC: {
  1392. Parameter *pt = NULL;
  1393. int parser_status;
  1394. parser_status = parserParameter(CALLPASERSSIGNATURE, &pt, true, false, false, true, MATHER_COMMA,
  1395. MATHER_COLON);
  1396. if (!parser_status) {
  1397. freeToken(value_token, true);
  1398. syntaxError(pm, syntax_error, value_token->line, 1, "Don't get a dict parameter");
  1399. goto return_;
  1400. }
  1401. if (!checkToken(pm, MATHER_RC)) {
  1402. freeToken(value_token, true);
  1403. freeParameter(pt, true);
  1404. syntaxError(pm, syntax_error, value_token->line, 1, "Don't get a } after dict");
  1405. goto return_;
  1406. }
  1407. st = makeBaseDictStatement(pt, value_token->line, pm->file);
  1408. break;
  1409. }
  1410. case MATHER_BLOCK: {
  1411. Statement *block = NULL;
  1412. if (!callParserCode(CALLPASERSSIGNATURE, &block, "Don't get a while code", value_token->line)) {
  1413. syntaxError(pm, syntax_error, value_token->line, 1, "Don't get block command");
  1414. freeToken(value_token, true);
  1415. goto return_;
  1416. }
  1417. st = makeOperationStatement(OPT_BLOCK, block, NULL);
  1418. break;
  1419. }
  1420. case MATHER_PRIVATE:
  1421. case MATHER_PROTECT:
  1422. case MATHER_PUBLIC: {
  1423. if (MATHER_COLON != readBackToken(pm)) {
  1424. syntaxError(pm, syntax_error, value_token->line, 1, "Don't get a : after aut token");
  1425. freeToken(value_token, true);
  1426. goto return_;
  1427. }
  1428. delToken(pm);
  1429. if (!callChildStatement(CALLPASERSSIGNATURE, parserBaseValue, BASEVALUE, &st, "Don't get Base Value after aut token")) {
  1430. freeToken(value_token, true);
  1431. goto return_;
  1432. }
  1433. switch (value_token->token_type) {
  1434. case MATHER_PROTECT:
  1435. st->aut = protect_aut;
  1436. break;
  1437. case MATHER_PRIVATE:
  1438. st->aut = private_aut;
  1439. break;
  1440. case MATHER_PUBLIC:
  1441. st->aut = public_aut;
  1442. break;
  1443. }
  1444. break;
  1445. }
  1446. default:{
  1447. backToken_(pm, value_token);
  1448. goto return_;
  1449. }
  1450. }
  1451. freeToken(value_token, false);
  1452. addStatementToken(BASEVALUE, st, pm);
  1453. return_: return;
  1454. }