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