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