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