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