Annotation of parser3/src/main/compile.y, revision 1.57
1.24 paf 1: /*
1.57 ! paf 2: $Id: compile.y,v 1.56 2001/03/06 15:30:49 paf Exp $
1.24 paf 3: */
4:
1.1 paf 5: %{
1.9 paf 6: #define YYSTYPE Array/*<op>*/ *
7: #define YYPARSE_PARAM pc
8: #define YYLEX_PARAM pc
9: #define YYDEBUG 1
1.1 paf 10: #define YYERROR_VERBOSE
1.9 paf 11: #define yyerror(msg) real_yyerror((parse_control *)pc, msg)
12: #define YYPRINT(file, type, value) yyprint(file, type, value)
1.1 paf 13:
14: #include <stdio.h>
15: #include <string.h>
16: #include <stdlib.h>
17:
18: #include "compile_tools.h"
1.8 paf 19: #include "pa_value.h"
1.12 paf 20: #include "pa_request.h"
1.39 paf 21: #include "pa_vobject.h"
1.52 paf 22: #include "pa_vdouble.h"
1.39 paf 23:
24: #define SELF_NAME "self"
25: #define USES_NAME "USES"
1.1 paf 26:
1.9 paf 27: int real_yyerror(parse_control *pc, char *s);
28: static void yyprint(FILE *file, int type, YYSTYPE value);
1.1 paf 29: int yylex(YYSTYPE *lvalp, void *pc);
30:
31:
1.8 paf 32: // local convinient inplace typecast & var
1.9 paf 33: #define PC ((parse_control *)pc)
1.25 paf 34: #define POOL *PC->pool
35: #undef NEW
36: #define NEW new(POOL)
1.1 paf 37: %}
38:
39: %pure_parser
40:
1.13 paf 41: %token EON
1.4 paf 42: %token STRING
1.1 paf 43: %token BOGUS
1.55 paf 44:
1.57 ! paf 45: /* logical */
! 46: %left '<' '>' "<=" ">="
! 47: %left "==" "!="
! 48: %left "||"
! 49: %left "&&"
! 50: %left NOT /* not: unary ! */
! 51:
! 52: /* bitwise */
! 53: %left '&' '|'
! 54: %left INV /* invertion: unary ~ */
! 55:
1.56 paf 56: /* numerical */
1.55 paf 57: %left '-' '+'
1.57 ! paf 58: %left '*' '/' '%'
1.56 paf 59: %left NEG /* negation: unary - */
1.1 paf 60:
61: %%
62:
1.10 paf 63: all:
64: one_big_piece {
1.25 paf 65: String& name_main=*NEW String(POOL);
1.11 paf 66: name_main.APPEND_CONST(MAIN_METHOD_NAME);
1.25 paf 67: Array& param_names=*NEW Array(POOL);
68: Array& local_names=*NEW Array(POOL);
1.34 paf 69: Method& method=*NEW Method(POOL, name_main, param_names, local_names, *$1);
70: PC->vclass->add_method(name_main, method);
1.10 paf 71: }
72: | methods;
73:
74: methods: method | methods method;
75: one_big_piece: maybe_codes;
76:
1.34 paf 77: method: control_method | code_method;
78:
79: control_method: '@' STRING '\n'
80: control_strings {
1.38 paf 81: String& name=*SLA2S($2);
1.34 paf 82: YYSTYPE strings_code=$4;
1.37 paf 83: if(strings_code->size()<1*2) {
84: strcpy(PC->error, "@");
85: strcat(PC->error, name.cstr());
86: strcat(PC->error, " is empty");
87: YYERROR;
88: }
1.36 paf 89: if(name==CLASS_NAME) {
1.34 paf 90: if(strings_code->size()==1*2)
1.38 paf 91: PC->vclass->set_name(*SLA2S(strings_code));
1.34 paf 92: else {
93: strcpy(PC->error, "@"CLASS_NAME" must contain sole name");
94: YYERROR;
95: }
96: } else {
1.36 paf 97: if(name==USES_NAME) {
1.34 paf 98: for(int i=0; i<strings_code->size(); i+=2) {
1.38 paf 99: String *file=SLA2S(strings_code, i);
1.35 paf 100: file->APPEND_CONST(".p");
101: PC->request->use(file->cstr(), 0);
1.34 paf 102: }
1.45 paf 103: } else if(name==BASE_NAME) {
104: if(strings_code->size()==1*2) {
105: String& base_name=*SLA2S(strings_code);
106: VClass *base=static_cast<VClass *>(
107: PC->request->classes().get(base_name));
108: if(!base) {
109: strcpy(PC->error, base_name.cstr());
110: strcat(PC->error, ": undefined class in @"BASE_NAME);
1.34 paf 111: YYERROR;
112: }
1.45 paf 113: PC->vclass->set_base(*base);
114: } else {
115: strcpy(PC->error, "@"BASE_NAME" must contain sole name");
116: YYERROR;
1.34 paf 117: }
118: } else {
1.36 paf 119: strcpy(PC->error, name.cstr());
1.34 paf 120: strcat(PC->error, ": invalid special name. valid names are "
1.45 paf 121: CLASS_NAME", "USES_NAME" and "BASE_NAME);
1.34 paf 122: YYERROR;
123: }
124: }
125: };
1.37 paf 126: control_strings: control_string | control_strings control_string { $$=$1; P($$, $2) };
127: control_string: maybe_string '\n';
128: maybe_string: empty | STRING;
1.34 paf 129:
130: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n'
1.10 paf 131: maybe_codes {
1.38 paf 132: const String *name=SLA2S($2);
1.10 paf 133:
134: YYSTYPE params_names_code=$3;
1.25 paf 135: Array& params_names=*NEW Array(POOL);
1.10 paf 136: for(int i=0; i<params_names_code->size(); i+=2)
1.38 paf 137: params_names+=SLA2S(params_names_code, i);
1.10 paf 138:
139: YYSTYPE locals_names_code=$4;
1.25 paf 140: Array& locals_names=*NEW Array(POOL);
1.10 paf 141: for(int i=0; i<locals_names_code->size(); i+=2)
1.38 paf 142: locals_names+=SLA2S(locals_names_code, i);
1.10 paf 143:
1.34 paf 144: Method& method=*NEW Method(POOL, *name, params_names, locals_names, *$7);
145: PC->vclass->add_method(*name, method);
1.8 paf 146: };
1.10 paf 147:
148: maybe_bracketed_strings: empty | bracketed_maybe_strings;
149: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
150: maybe_strings: empty | strings;
151: strings: STRING | strings ';' STRING { $$=$1; P($$, $3) };
152:
153: maybe_comment: empty | STRING;
1.1 paf 154:
155: /* codes */
156:
1.10 paf 157: maybe_codes: empty | codes;
158:
1.1 paf 159: codes: code | codes code {
160: $$=$1;
1.9 paf 161: P($$, $2);
1.1 paf 162: };
163: code: write_str_literal | action;
164: action: get | put | with | call;
165:
166: /* get */
167:
1.42 paf 168: get: '$' get_name {
1.1 paf 169: $$=$2; /* stack: resulting value */
1.54 paf 170: O($$, OP_WRITE); /* value=pop; write(value) */
1.1 paf 171: };
1.43 paf 172: get_name: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 173: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 174: name_without_curly_rdive:
175: name_without_curly_rdive_read
176: | name_without_curly_rdive_root
177: | name_without_curly_rdive_class;
1.19 paf 178: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.25 paf 179: $$=N(POOL);
1.22 paf 180: Array *diving_code=$1;
1.38 paf 181: String *first_name=SLA2S(diving_code);
1.23 paf 182: if(first_name && *first_name==SELF_NAME) {
1.54 paf 183: O($$, OP_WITH_SELF); /* stack: starting context */
1.22 paf 184: P($$, diving_code,
185: /* skip over... */
186: diving_code->size()>2?3/*OP_+string+get_element*/:2/*OP_+string*/);
187: } else {
1.54 paf 188: O($$, OP_WITH_READ); /* stack: starting context */
1.22 paf 189: P($$, diving_code);
190: }
191: /* diving code; stack: current context */
1.1 paf 192: };
1.19 paf 193: name_without_curly_rdive_root: ':' name_without_curly_rdive_code {
1.25 paf 194: $$=N(POOL);
1.54 paf 195: O($$, OP_WITH_ROOT); /* stack: starting context */
1.19 paf 196: P($$, $2); /* diving code; stack: current context */
197: };
1.44 paf 198: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P($$, $2) };
1.19 paf 199: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P($$, $2) };
1.1 paf 200:
201: /* put */
202:
1.52 paf 203: put: '$' name_expr_wdive constructor_value {
1.20 paf 204: $$=$2; /* stack: context,name */
1.52 paf 205: P($$, $3); /* stack: context,name,constructor_value */
1.54 paf 206: O($$, OP_CONSTRUCT); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.20 paf 207: };
1.44 paf 208: name_expr_wdive:
209: name_expr_wdive_write
210: | name_expr_wdive_root
211: | name_expr_wdive_class;
1.28 paf 212: name_expr_wdive_write: name_expr_dive_code {
1.44 paf 213: $$=N(POOL);
1.23 paf 214: Array *diving_code=$1;
1.38 paf 215: String *first_name=SLA2S(diving_code);
1.23 paf 216: if(first_name && *first_name==SELF_NAME) {
1.54 paf 217: O($$, OP_WITH_SELF); /* stack: starting context */
1.23 paf 218: P($$, diving_code,
219: /* skip over... */
220: diving_code->size()>2?3/*OP_+string+get_element*/:2/*OP_+string*/);
221: } else {
1.54 paf 222: O($$, OP_WITH_WRITE); /* stack: starting context */
1.23 paf 223: P($$, diving_code);
224: }
225: /* diving code; stack: current context */
1.20 paf 226: };
1.28 paf 227: name_expr_wdive_root: ':' name_expr_dive_code {
1.25 paf 228: $$=N(POOL);
1.54 paf 229: O($$, OP_WITH_ROOT); /* stack: starting context */
1.9 paf 230: P($$, $2); /* diving code; stack: context,name */
1.1 paf 231: };
1.44 paf 232: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P($$, $2) };
1.20 paf 233:
1.1 paf 234: constructor_value:
1.55 paf 235: '[' any_constructor_code_value ']' { $$=$2 }
1.56 paf 236: | '(' any_expr ')' { $$=$2 }
1.52 paf 237: ;
1.55 paf 238: any_constructor_code_value:
239: empty_string_value /* optimized $var[] case */
1.52 paf 240: | STRING /* optimized $var[STRING] case */
1.55 paf 241: | constructor_code_value /* $var[something complex] */
1.1 paf 242: ;
1.55 paf 243: constructor_code_value: constructor_code {
1.25 paf 244: $$=N(POOL);
1.54 paf 245: O($$, OP_CREATE_EWPOOL); /* stack: empty write context */
1.9 paf 246: P($$, $1); /* some codes to that context */
1.54 paf 247: O($$, OP_REDUCE_EWPOOL); /* context=pop; stack: context.value() */
1.1 paf 248: };
1.55 paf 249: constructor_code: codes__excluding_sole_str_literal;
1.27 paf 250: codes__excluding_sole_str_literal: action | code codes { $$=$1; P($$, $2) };
251:
1.1 paf 252: /* call */
253:
1.38 paf 254: call: '^' call_name store_params EON { /* ^field.$method{vasya} */
1.42 paf 255: $$=$2; /* with_xxx,diving code; stack: context,method_junction */
1.54 paf 256: O($$, OP_GET_METHOD_FRAME); /* stack: context,method_frame */
1.9 paf 257: P($$, $3); /* filling method_frame.store_params */
1.54 paf 258: O($$, OP_CALL); /* method_frame=pop; ncontext=pop; call(ncontext,method_frame) */
1.1 paf 259: };
260:
1.43 paf 261: call_name: name_without_curly_rdive;
1.38 paf 262:
1.9 paf 263: store_params: store_param | store_params store_param { $$=$1; P($$, $2) };
1.1 paf 264: store_param: store_round_param | store_curly_param;
1.47 paf 265: store_round_param: '[' store_param_parts ']' {$$=$2};
1.31 paf 266: store_param_parts:
1.32 paf 267: store_param_part
268: | store_param_parts ';' store_param_part { $$=$1; P($$, $3) }
1.31 paf 269: ;
1.10 paf 270: store_curly_param: '{' maybe_codes '}' {
1.25 paf 271: $$=N(POOL);
1.29 paf 272: PCA($$, $2);
1.54 paf 273: O($$, OP_STORE_PARAM);
1.1 paf 274: };
1.32 paf 275: store_param_part:
1.33 paf 276: empty /* optimized () case */
277: | STRING { /* optimized (STRING) case */
1.32 paf 278: $$=$1;
1.54 paf 279: O($$, OP_STORE_PARAM);
1.32 paf 280: }
1.55 paf 281: | constructor_code_value { /* (something complex) */
1.32 paf 282: $$=$1;
1.54 paf 283: O($$, OP_STORE_PARAM);
1.32 paf 284: }
285: ;
1.1 paf 286:
287: /* name */
288:
1.20 paf 289: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P($$, $2) };
1.1 paf 290:
1.9 paf 291: name_path: name_step | name_path name_step { $$=$1; P($$, $2) };
1.1 paf 292: name_step: name_advance1 '.';
293: name_advance1: name_expr_value {
294: /* stack: context */
295: $$=$1; /* stack: context,name */
1.54 paf 296: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 297: };
298: name_advance2: name_expr_value {
299: /* stack: context */
300: $$=$1; /* stack: context,name */
1.54 paf 301: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 302: }
1.4 paf 303: | STRING BOGUS
1.1 paf 304: ;
305: name_expr_value:
1.4 paf 306: STRING /* subname_is_const */
1.1 paf 307: | name_expr_subvar_value /* $subname_is_var_value */
308: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value[$...] */
309: ;
310: name_expr_subvar_value: '$' subvar_ref_name_rdive {
311: $$=$2;
1.54 paf 312: O($$, OP_GET_ELEMENT);
1.1 paf 313: };
1.4 paf 314: name_expr_with_subvar_value: STRING subvar_get_writes {
1.25 paf 315: $$=N(POOL);
1.54 paf 316: O($$, OP_CREATE_EWPOOL);
1.9 paf 317: P($$, $1);
1.54 paf 318: O($$, OP_WRITE);
1.9 paf 319: P($$, $2);
1.54 paf 320: O($$, OP_REDUCE_EWPOOL);
1.1 paf 321: };
1.18 paf 322: subvar_ref_name_rdive: subvar_ref_name_rdive_read | subvar_ref_name_rdive_root;
323: subvar_ref_name_rdive_read: STRING {
1.25 paf 324: $$=N(POOL);
1.54 paf 325: O($$, OP_WITH_READ);
1.9 paf 326: P($$, $1);
1.1 paf 327: };
1.18 paf 328: subvar_ref_name_rdive_root: ':' STRING {
1.25 paf 329: $$=N(POOL);
1.54 paf 330: O($$, OP_WITH_ROOT);
1.18 paf 331: P($$, $2);
332: };
1.9 paf 333: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P($$, $2) };
1.1 paf 334: subvar__get_write: '$' subvar_ref_name_rdive {
335: $$=$2;
1.54 paf 336: O($$, OP_GET_ELEMENT__WRITE);
1.42 paf 337: };
338:
1.44 paf 339: class_prefix: STRING ':' {
1.42 paf 340: String& name=*SLA2S($1);
341: VClass *vclass=static_cast<VClass *>(PC->request->classes().get(name));
342: if(!vclass) {
343: strcpy(PC->error, "'");
344: strcat(PC->error, name.cstr());
345: strcat(PC->error, "' class is undefined in call");
346: YYERROR;
347: }
1.48 paf 348: //TODO: убрать зависимость от статических @USE, сделать имя, а не ссылку
1.42 paf 349: $$=CL(vclass); // vclass
1.1 paf 350: };
351:
352:
353: /* with */
354:
355: with: '$' name_without_curly_rdive '{' codes '}' {
356: $$=$2;
1.54 paf 357: O($$, OP_CREATE_RWPOOL);
1.9 paf 358: P($$, $4);
1.54 paf 359: O($$, OP_REDUCE_RWPOOL);
360: O($$, OP_WRITE);
1.1 paf 361: };
1.53 paf 362:
1.56 paf 363: /* expr */
1.53 paf 364:
1.56 paf 365: any_expr:
1.55 paf 366: empty_double_value /* optimized $var() case */
1.56 paf 367: | expr /* $var(something) */
1.53 paf 368: ;
1.56 paf 369: expr:
1.55 paf 370: number
1.57 ! paf 371: | '-' expr %prec NEG {
! 372: $$=$2; // stack: operand
! 373: O($$, OP_NEG); // value=-operand; stack: value
! 374: }
! 375: | '~' expr %prec INV {
! 376: $$=$2; // stack: operand
! 377: O($$, OP_INV); // value=~operand; stack: value
! 378: }
! 379: | '!' expr %prec NOT {
! 380: $$=$2; // stack: operand
! 381: O($$, OP_NOT); // value=!operand; stack: value
! 382: }
! 383: /*todo: def in fexists*/
! 384: | expr '-' expr {
1.55 paf 385: $$=$1; // stack: first operand
386: P($$, $3); // stack: first,second operands
1.57 ! paf 387: O($$, OP_SUB); // value=first-second; stack: value
1.55 paf 388: }
1.57 ! paf 389: | expr '+' expr {
1.55 paf 390: $$=$1; // stack: first operand
391: P($$, $3); // stack: first,second operands
1.57 ! paf 392: O($$, OP_ADD); // value=first+second; stack: value
1.55 paf 393: }
1.56 paf 394: | expr '*' expr {
1.53 paf 395: $$=$1; // stack: first operand
396: P($$, $3); // stack: first,second operands
1.54 paf 397: O($$, OP_MUL); // value=first*second; stack: value
1.55 paf 398: }
1.56 paf 399: | expr '/' expr {
1.55 paf 400: $$=$1; // stack: first operand
401: P($$, $3); // stack: first,second operands
1.56 paf 402: O($$, OP_DIV); // value=first/second; stack: value
403: }
1.57 ! paf 404: | expr '%' expr {
! 405: $$=$1; // stack: first operand
! 406: P($$, $3); // stack: first,second operands
! 407: O($$, OP_MOD); // value=first%second; stack: value
! 408: }
! 409: | expr '&' expr {
! 410: $$=$1; // stack: first operand
! 411: P($$, $3); // stack: first,second operands
! 412: O($$, OP_BIN_AND); // value=first&second; stack: value
! 413: }
! 414: | expr '|' expr {
! 415: $$=$1; // stack: first operand
! 416: P($$, $3); // stack: first,second operands
! 417: O($$, OP_BIN_OR); // value=first|second; stack: value
! 418: }
! 419: | expr "&&" expr {
! 420: $$=$1; // stack: first operand
! 421: P($$, $3); // stack: first,second operands
! 422: O($$, OP_LOG_AND); // value=first&&second; stack: value
! 423: }
! 424: | expr "||" expr {
! 425: $$=$1; // stack: first operand
! 426: P($$, $3); // stack: first,second operands
! 427: O($$, OP_LOG_OR); // value=first||second; stack: value
! 428: }
! 429: | expr '<' expr {
! 430: $$=$1; // stack: first operand
! 431: P($$, $3); // stack: first,second operands
! 432: O($$, OP_NUM_LT); // value=first<second; stack: value
! 433: }
! 434: | expr '>' expr {
! 435: $$=$1; // stack: first operand
! 436: P($$, $3); // stack: first,second operands
! 437: O($$, OP_NUM_GT); // value=first>second; stack: value
! 438: }
! 439: | expr "<=" expr {
! 440: $$=$1; // stack: first operand
! 441: P($$, $3); // stack: first,second operands
! 442: O($$, OP_NUM_LE); // value=first<=second; stack: value
! 443: }
! 444: | expr ">=" expr {
! 445: $$=$1; // stack: first operand
! 446: P($$, $3); // stack: first,second operands
! 447: O($$, OP_NUM_GE); // value=first>=second; stack: value
1.56 paf 448: }
1.57 ! paf 449: | expr "==" expr {
! 450: $$=$1; // stack: first operand
! 451: P($$, $3); // stack: first,second operands
! 452: O($$, OP_NUM_EQ); // value=first==second; stack: value
1.56 paf 453: }
1.57 ! paf 454: | expr "!=" expr {
! 455: $$=$1; // stack: first operand
! 456: P($$, $3); // stack: first,second operands
! 457: O($$, OP_NUM_NE); // value=first!=second; stack: value
1.56 paf 458: }
1.57 ! paf 459: /*
! 460: OP_STR_LT, OP_STR_GT, OP_STR_LE, OP_STR_GE, OP_STR_EQ, OP_STR_NE
! 461: */
1.56 paf 462: | '(' expr ')' { $$ = $2; }
463: ;
1.55 paf 464:
1.53 paf 465:
466: /*
1.56 paf 467: complex_expr_value: complex_expr {
1.53 paf 468: $$=N(POOL);
1.54 paf 469: O($$, OP_CREATE_SWPOOL); /* stack: empty write context * /
1.53 paf 470: P($$, $1); /* some codes to that context * /
1.54 paf 471: O($$, OP_REDUCE_SWPOOL); /* context=pop; stack: context.get_string() * /
1.53 paf 472: };
473: */
1.1 paf 474:
1.27 paf 475: /* basics */
1.1 paf 476:
1.4 paf 477: write_str_literal: STRING {
1.38 paf 478: if(SLA2S($1)->size()) {
1.30 paf 479: $$=$1;
1.54 paf 480: O($$, OP_WRITE);
1.30 paf 481: } else {
482: // optimized case of special end of macro. see yylex
483: $$=N(POOL);
484: }
1.26 paf 485: };
1.54 paf 486: number: STRING {
487: change_string_literal_to_double_literal($$=$1);
488: };
489:
1.55 paf 490: empty_double_value: /* empty */ { $$=VL(NEW VDouble(POOL)) };
491: empty_string_value: /* empty */ { $$=VL(NEW VString(POOL)) };
1.25 paf 492: empty: /* empty */ { $$=N(POOL) };
1.1 paf 493:
494: %%
495:
496: /*
497: 000$111(2222)00
498: 000$111{3333}00
1.9 paf 499: $,^: push,=0
1.1 paf 500: 1:( { break=pop
501: 2:( ) pop
502: 3:{ } pop
503:
504: 000^111(2222)4444{33333}4000
1.9 paf 505: $,^: push,=0
1.1 paf 506: 1:( { break=pop
507: 2:( )=4
508: 3:{ }=4
509: 4:[^({]=pop
510: */
511:
512: int yylex(YYSTYPE *lvalp, void *pc) {
513: #define lexical_brackets_nestage PC->brackets_nestages[PC->sp]
1.48 paf 514: #define RC {result=c; goto break2; }
1.1 paf 515:
516: register int c;
517: int result;
518:
519: if(PC->pending_state) {
520: result=PC->pending_state;
521: PC->pending_state=0;
522: return result;
523: }
524:
1.9 paf 525: char *begin=PC->source;
526: char *end;
527: int begin_line=PC->line;
1.50 paf 528: while(true) {
1.9 paf 529: c=*(end=(PC->source++));
1.1 paf 530:
1.4 paf 531: if(c=='\n') {
1.1 paf 532: PC->line++;
1.8 paf 533: PC->col=0;
1.10 paf 534: } else
1.4 paf 535: PC->col++;
1.1 paf 536:
1.48 paf 537: // escaping: ^^ ^$ ^; ^) ^} ^( ^{ ^"
538: if(c=='^')
539: switch(*PC->source) {
540: case '^': case '$': case ';':
541: case '[': case ']':
542: case '{': case '}':
543: case '"':
1.40 paf 544: if(end!=begin) {
545: // append piece till ^
546: PC->string->APPEND(begin, end-begin, PC->file, begin_line);
547: }
548: // reset piece 'start' position & line
549: begin=PC->source; // ^
1.9 paf 550: begin_line=PC->line;
1.40 paf 551: // skip over ^ and _
1.50 paf 552: PC->source++; PC->col++;
1.40 paf 553: // skip analysis = forced literal
1.1 paf 554: continue;
555: }
556: switch(PC->ls) {
1.10 paf 557:
558: // USER'S = NOT OURS
1.1 paf 559: case LS_USER:
1.48 paf 560: switch(c) {
561: case '$':
1.10 paf 562: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 563: RC;
564: case '^':
565: push_LS(PC, LS_METHOD_NAME);
566: RC;
567: case '@':
568: if(PC->col==0+1) {
569: push_LS(PC, LS_DEF_NAME);
570: RC;
571: }
572: break;
1.1 paf 573: }
1.48 paf 574: break;
575:
576: // STRING IN EXPRESSION
577: case LS_EXPRESSION_STRING:
578: switch(c) {
579: case '"':
580: pop_LS(PC); //"abc".
581: RC;
582: case '$':
583: push_LS(PC, LS_VAR_NAME_SIMPLE);
584: RC;
585: case '^':
1.10 paf 586: push_LS(PC, LS_METHOD_NAME);
1.48 paf 587: RC;
1.10 paf 588: }
589: break;
590:
591: // METHOD DEFINITION
592: case LS_DEF_NAME:
1.48 paf 593: switch(c) {
594: case '[':
1.10 paf 595: PC->ls=LS_DEF_PARAMS;
1.48 paf 596: RC;
597: case '\n':
598: PC->ls=LS_DEF_SPECIAL_BODY;
599: RC;
1.10 paf 600: }
601: break;
1.48 paf 602:
1.10 paf 603: case LS_DEF_PARAMS:
1.48 paf 604: switch(c) {
605: case ';':
606: RC;
607: case ']':
1.10 paf 608: PC->ls=*PC->source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 609: RC;
1.49 paf 610: case '\n': // wrong. bailing out
1.10 paf 611: pop_LS(PC);
1.48 paf 612: RC;
1.10 paf 613: }
614: break;
1.48 paf 615:
1.10 paf 616: case LS_DEF_LOCALS:
1.48 paf 617: switch(c) {
618: case '[':
619: case ';':
620: RC;
621: case ']':
1.10 paf 622: PC->ls=LS_DEF_COMMENT;
1.48 paf 623: RC;
624: case '\n': // wrong. bailing out
1.10 paf 625: pop_LS(PC);
1.48 paf 626: RC;
1.10 paf 627: }
628: break;
1.48 paf 629:
1.10 paf 630: case LS_DEF_COMMENT:
631: if(c=='\n') {
632: pop_LS(PC);
1.48 paf 633: RC;
1.37 paf 634: }
635: break;
636:
1.48 paf 637: case LS_DEF_SPECIAL_BODY:
1.37 paf 638: if(c=='\n') {
1.48 paf 639: switch(*PC->source) {
640: case '@': case 0: // end of special_code
1.37 paf 641: pop_LS(PC);
1.48 paf 642: break;
643: }
644: RC;
645: }
646: break;
647:
648: // (EXPRESSION)
649: case LS_EXPRESSION_BODY:
650: switch(c) {
651: case ')':
652: if(--lexical_brackets_nestage==0)
653: pop_LS(PC); //(EXPRESSION).
654: RC;
655: case '$':
656: push_LS(PC, LS_VAR_NAME_IN_EXPRESSION);
657: RC;
658: case '^':
659: push_LS(PC, LS_METHOD_NAME);
660: RC;
661: case '(':
662: lexical_brackets_nestage++;
663: RC;
664: case '+': case '-': case '*': case '/': case '%':
1.56 paf 665: case '!': case '~':
1.49 paf 666: case '&': case '|':
1.56 paf 667: case '<': case '>': case '=':
1.48 paf 668: case ';':
669: RC;
670: case '"':
671: push_LS(PC, LS_EXPRESSION_STRING);
672: RC;
1.50 paf 673: case 'l': case 'g': case 'e': case 'n':
1.51 paf 674: if(end==begin) // right after whitespace
675: switch(char next_c=*PC->source) {
676: // case '?': // ok [and bad cases, yacc would bark at them]
677: case 't': // lt gt [et nt]
678: case 'e': // le ge ne [ee]
679: case 'q': // eq [lq gq nq]
680: PC->source++; PC->col++;
681: PC->pending_state=next_c;
682: return c;
1.50 paf 683: }
1.48 paf 684: break;
685: case ' ': case '\t': case '\n':
686: if(end!=begin) {
687: // append piece till whitespace
688: PC->string->APPEND(begin, end-begin, PC->file, begin_line);
689: }
690: // reset piece 'start' position & line
1.50 paf 691: begin=PC->source; // after whitespace
1.48 paf 692: begin_line=PC->line;
693: continue;
1.1 paf 694: }
695: break;
696:
1.10 paf 697: // VARIABLE GET/PUT/WITH
1.1 paf 698: case LS_VAR_NAME_SIMPLE:
1.48 paf 699: case LS_VAR_NAME_IN_EXPRESSION:
700: if(PC->ls==LS_VAR_NAME_IN_EXPRESSION) {
1.56 paf 701: // name in expr ends also before binary operators
1.48 paf 702: switch(c) {
703: case '+': case '-': case '*': case '/': case '%':
704: case '&': case '|':
705: case '<': case '>': case '=': case '!':
706: pop_LS(PC);
707: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
708: result=EON;
709: goto break2;
710: }
711: }
712: switch(c) {
713: case 0:
714: case ' ': case '\t': case '\n':
715: case ';':
716: case ']': case '}':
1.1 paf 717: pop_LS(PC);
1.32 paf 718: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 719: result=EON;
1.1 paf 720: goto break2;
1.48 paf 721: case '[':
722: PC->ls=LS_VAR_SQUARE;
1.1 paf 723: lexical_brackets_nestage=1;
1.48 paf 724: RC;
725: case '{':
726: if(begin==end) { // ${name}, no need of EON, switching LS
727: PC->ls=LS_VAR_NAME_CURLY;
728: } else {
729: PC->ls=LS_VAR_CURLY;
730: lexical_brackets_nestage=1;
731: }
732:
733: RC;
734: case '(':
735: PC->ls=LS_EXPRESSION_BODY;
1.1 paf 736: lexical_brackets_nestage=1;
1.48 paf 737: RC;
738: case '.': // name part delim
739: case '$': // name part subvar
740: case ':': // ':name' or 'class:name'
741: RC;
1.1 paf 742: }
743: break;
1.48 paf 744:
1.1 paf 745: case LS_VAR_NAME_CURLY:
1.48 paf 746: switch(c) {
747: case '}': // ${name} finished, restoring LS
1.1 paf 748: pop_LS(PC);
1.48 paf 749: RC;
750: case '.': // name part delim
751: case '$': // name part subvar
752: case ':': // ':name' or 'class:name'
753: RC;
1.1 paf 754: }
755: break;
1.48 paf 756:
757: case LS_VAR_SQUARE:
758: switch(c) {
759: case '$':
1.10 paf 760: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 761: RC;
762: case '^':
1.10 paf 763: push_LS(PC, LS_METHOD_NAME);
1.48 paf 764: RC;
765: case ']':
1.1 paf 766: if(--lexical_brackets_nestage==0) {
767: pop_LS(PC);
1.48 paf 768: RC;
1.1 paf 769: }
1.48 paf 770: break;
771: case ';': // operator_or_fmt;value delim
772: RC;
773: case '[':
774: lexical_brackets_nestage++;
775: break;
1.1 paf 776: }
777: break;
1.48 paf 778:
1.1 paf 779: case LS_VAR_CURLY:
1.48 paf 780: switch(c) {
781: case '$':
1.10 paf 782: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 783: RC;
784: case '^':
1.10 paf 785: push_LS(PC, LS_METHOD_NAME);
1.48 paf 786: RC;
787: case '}':
1.1 paf 788: if(--lexical_brackets_nestage==0) {
789: pop_LS(PC);
1.48 paf 790: RC;
1.1 paf 791: }
1.48 paf 792: break;
793: case '{':
1.1 paf 794: lexical_brackets_nestage++;
1.48 paf 795: break;
796: }
1.1 paf 797: break;
798:
1.10 paf 799: // METHOD CALL
1.1 paf 800: case LS_METHOD_NAME:
1.48 paf 801: switch(c) {
802: case '[':
803: PC->ls=LS_METHOD_SQUARE;
1.1 paf 804: lexical_brackets_nestage=1;
1.48 paf 805: RC;
806: case '{':
1.1 paf 807: PC->ls=LS_METHOD_CURLY;
808: lexical_brackets_nestage=1;
1.48 paf 809: RC;
810: case '.': // name part delim
811: case '$': // name part subvar
812: case ':': // ':name' or 'class:name'
813: RC;
1.1 paf 814: }
815: break;
1.48 paf 816:
817: case LS_METHOD_SQUARE:
818: switch(c) {
819: case '$':
1.10 paf 820: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 821: RC;
822: case '^':
1.10 paf 823: push_LS(PC, LS_METHOD_NAME);
1.48 paf 824: RC;
825: case ';': // param delim
826: RC;
827: case ']':
1.1 paf 828: if(--lexical_brackets_nestage==0) {
829: PC->ls=LS_METHOD_AFTER;
1.48 paf 830: RC;
1.1 paf 831: }
1.48 paf 832: break;
833: case '[':
1.1 paf 834: lexical_brackets_nestage++;
1.48 paf 835: break;
836: }
1.1 paf 837: break;
1.48 paf 838:
1.1 paf 839: case LS_METHOD_CURLY:
1.48 paf 840: switch(c) {
841: case '$':
1.10 paf 842: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 843: RC;
844: case '^':
1.10 paf 845: push_LS(PC, LS_METHOD_NAME);
1.48 paf 846: RC;
847: case '}':
1.1 paf 848: if(--lexical_brackets_nestage==0) {
849: PC->ls=LS_METHOD_AFTER;
1.48 paf 850: RC;
1.1 paf 851: }
1.48 paf 852: break;
853: case '{':
1.1 paf 854: lexical_brackets_nestage++;
1.48 paf 855: break;
856: }
1.1 paf 857: break;
1.48 paf 858:
1.1 paf 859: case LS_METHOD_AFTER:
1.47 paf 860: if(c=='[') {/* )( }( */
1.48 paf 861: PC->ls=LS_METHOD_SQUARE;
1.1 paf 862: lexical_brackets_nestage=1;
1.48 paf 863: RC;
1.1 paf 864: }
865: if(c=='{') {/* ){ }{ */
866: PC->ls=LS_METHOD_CURLY;
867: lexical_brackets_nestage=1;
1.48 paf 868: RC;
1.1 paf 869: }
870: pop_LS(PC);
1.32 paf 871: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 872: result=EON;
1.1 paf 873: goto break2;
874: }
1.9 paf 875: if(c==0) {
1.1 paf 876: result=-1;
877: break;
878: }
879: }
880:
881: break2:
1.9 paf 882: if(begin==end)
1.1 paf 883: return result;
884: else {
885: PC->pending_state=result;
1.10 paf 886: // strip last \n before LS_DEF_NAME or EOF
887: if((c=='@' || c==0) && end[-1]=='\n')
888: end--;
1.30 paf 889: if(end!=begin) {
890: // append last piece
891: PC->string->APPEND(begin, end-begin, PC->file, begin_line/*, start_col*/);
892: }
1.17 paf 893: // create STRING value: array of OP_VALUE+vstring
1.55 paf 894: *lvalp=VL(NEW VString(*PC->string));
1.10 paf 895: // new pieces storage
1.25 paf 896: PC->string=NEW String(POOL);
1.10 paf 897: // go!
1.4 paf 898: return STRING;
1.1 paf 899: }
900: }
901:
1.9 paf 902: int real_yyerror(parse_control *pc, char *s) /* Called by yyparse on error */
1.1 paf 903: {
1.16 paf 904: //fprintf(stderr, "[%s]\n", s);
1.6 paf 905:
1.46 paf 906: strncpy(pc->error, s, MAX_STRING); // TODO: перепроверить с треклятым последним байтом
1.1 paf 907: return 1;
908: }
909:
910: static void
1.9 paf 911: yyprint(
1.1 paf 912: FILE *file,
913: int type,
914: YYSTYPE value)
915: {
1.9 paf 916: if(type==STRING)
1.38 paf 917: fprintf(file, " \"%s\"", SLA2S(value)->cstr());
1.1 paf 918: }
919:
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