Annotation of parser3/src/main/compile.y, revision 1.37
1.24 paf 1: /*
1.37 ! paf 2: $Id: compile.y,v 1.36 2001/02/24 16:05:48 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"
1.1 paf 21:
1.9 paf 22: int real_yyerror(parse_control *pc, char *s);
23: static void yyprint(FILE *file, int type, YYSTYPE value);
1.1 paf 24: int yylex(YYSTYPE *lvalp, void *pc);
25:
26:
1.8 paf 27: // local convinient inplace typecast & var
1.9 paf 28: #define PC ((parse_control *)pc)
1.25 paf 29: #define POOL *PC->pool
30: #undef NEW
31: #define NEW new(POOL)
1.1 paf 32: %}
33:
34: %pure_parser
35:
1.13 paf 36: %token EON
1.4 paf 37: %token STRING
1.1 paf 38: %token BOGUS
39:
40: %%
41:
1.10 paf 42: all:
43: one_big_piece {
1.25 paf 44: String& name_main=*NEW String(POOL);
1.11 paf 45: name_main.APPEND_CONST(MAIN_METHOD_NAME);
1.25 paf 46: Array& param_names=*NEW Array(POOL);
47: Array& local_names=*NEW Array(POOL);
1.34 paf 48: Method& method=*NEW Method(POOL, name_main, param_names, local_names, *$1);
49: PC->vclass->add_method(name_main, method);
1.10 paf 50: }
51: | methods;
52:
53: methods: method | methods method;
54: one_big_piece: maybe_codes;
55:
1.34 paf 56: method: control_method | code_method;
57:
58: control_method: '@' STRING '\n'
59: control_strings {
1.36 paf 60: String& name=*LA2S($2);
1.34 paf 61: YYSTYPE strings_code=$4;
1.37 ! paf 62: if(strings_code->size()<1*2) {
! 63: strcpy(PC->error, "@");
! 64: strcat(PC->error, name.cstr());
! 65: strcat(PC->error, " is empty");
! 66: YYERROR;
! 67: }
1.36 paf 68: if(name==CLASS_NAME) {
1.34 paf 69: if(strings_code->size()==1*2)
70: PC->vclass->set_name(*LA2S(strings_code));
71: else {
72: strcpy(PC->error, "@"CLASS_NAME" must contain sole name");
73: YYERROR;
74: }
75: } else {
1.36 paf 76: if(name==USES_NAME) {
1.34 paf 77: for(int i=0; i<strings_code->size(); i+=2) {
1.35 paf 78: String *file=LA2S(strings_code, i);
79: file->APPEND_CONST(".p");
80: PC->request->use(file->cstr(), 0);
1.34 paf 81: }
1.36 paf 82: } else if(name==PARENTS_NAME) {
1.34 paf 83: for(int i=0; i<strings_code->size(); i+=2) {
1.36 paf 84: String& parent_name=*LA2S(strings_code, i);
1.34 paf 85: VClass *parent=static_cast<VClass *>(
1.36 paf 86: PC->request->classes().get(parent_name));
1.34 paf 87: if(!parent) {
1.36 paf 88: strcpy(PC->error, parent_name.cstr());
1.34 paf 89: strcat(PC->error, ": undefined class");
90: YYERROR;
91: }
92: PC->vclass->add_parent(*parent);
93: }
94: } else {
1.36 paf 95: strcpy(PC->error, name.cstr());
1.34 paf 96: strcat(PC->error, ": invalid special name. valid names are "
97: CLASS_NAME", "USES_NAME" and "PARENTS_NAME);
98: YYERROR;
99: }
100: }
101: };
1.37 ! paf 102: control_strings: control_string | control_strings control_string { $$=$1; P($$, $2) };
! 103: control_string: maybe_string '\n';
! 104: maybe_string: empty | STRING;
1.34 paf 105:
106: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n'
1.10 paf 107: maybe_codes {
108: const String *name=LA2S($2);
109:
110: YYSTYPE params_names_code=$3;
1.25 paf 111: Array& params_names=*NEW Array(POOL);
1.10 paf 112: for(int i=0; i<params_names_code->size(); i+=2)
113: params_names+=LA2S(params_names_code, i);
114:
115: YYSTYPE locals_names_code=$4;
1.25 paf 116: Array& locals_names=*NEW Array(POOL);
1.10 paf 117: for(int i=0; i<locals_names_code->size(); i+=2)
118: locals_names+=LA2S(locals_names_code, i);
119:
1.34 paf 120: Method& method=*NEW Method(POOL, *name, params_names, locals_names, *$7);
121: PC->vclass->add_method(*name, method);
1.8 paf 122: };
1.10 paf 123:
124: maybe_bracketed_strings: empty | bracketed_maybe_strings;
125: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
126: maybe_strings: empty | strings;
127: strings: STRING | strings ';' STRING { $$=$1; P($$, $3) };
128:
129: maybe_comment: empty | STRING;
1.1 paf 130:
131: /* codes */
132:
1.10 paf 133: maybe_codes: empty | codes;
134:
1.1 paf 135: codes: code | codes code {
136: $$=$1;
1.9 paf 137: P($$, $2);
1.1 paf 138: };
139: code: write_str_literal | action;
140: action: get | put | with | call;
141:
142: /* get */
143:
144: get: '$' any_name {
145: $$=$2; /* stack: resulting value */
1.17 paf 146: OP($$, OP_WRITE); /* value=pop; write(value) */
1.1 paf 147: };
148:
1.13 paf 149: any_name: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 150:
151: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.19 paf 152: name_without_curly_rdive: name_without_curly_rdive_read | name_without_curly_rdive_root;
153: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.25 paf 154: $$=N(POOL);
1.22 paf 155: Array *diving_code=$1;
156: String *first_name=LA2S(diving_code);
1.23 paf 157: if(first_name && *first_name==SELF_NAME) {
1.22 paf 158: OP($$, OP_WITH_SELF); /* stack: starting context */
159: P($$, diving_code,
160: /* skip over... */
161: diving_code->size()>2?3/*OP_+string+get_element*/:2/*OP_+string*/);
162: } else {
163: OP($$, OP_WITH_READ); /* stack: starting context */
164: P($$, diving_code);
165: }
166: /* diving code; stack: current context */
1.1 paf 167: };
1.19 paf 168: name_without_curly_rdive_root: ':' name_without_curly_rdive_code {
1.25 paf 169: $$=N(POOL);
1.19 paf 170: OP($$, OP_WITH_ROOT); /* stack: starting context */
171: P($$, $2); /* diving code; stack: current context */
172: };
173: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P($$, $2) };
1.1 paf 174:
175: /* put */
176:
1.28 paf 177: put: '$' name_expr_wdive '(' constructor_value ')' {
1.20 paf 178: $$=$2; /* stack: context,name */
179: P($$, $4); /* stack: context,name,constructor_value */
180: OP($$, OP_CONSTRUCT); /* value=pop; name=pop; context=pop; construct(context,name,value) */
181: };
1.28 paf 182: name_expr_wdive: name_expr_wdive_write | name_expr_wdive_root;
183: name_expr_wdive_write: name_expr_dive_code {
1.25 paf 184: $$=N(POOL);
1.23 paf 185: Array *diving_code=$1;
186: String *first_name=LA2S(diving_code);
187: if(first_name && *first_name==SELF_NAME) {
188: OP($$, OP_WITH_SELF); /* stack: starting context */
189: P($$, diving_code,
190: /* skip over... */
191: diving_code->size()>2?3/*OP_+string+get_element*/:2/*OP_+string*/);
192: } else {
193: OP($$, OP_WITH_WRITE); /* stack: starting context */
194: P($$, diving_code);
195: }
196: /* diving code; stack: current context */
1.20 paf 197: };
1.28 paf 198: name_expr_wdive_root: ':' name_expr_dive_code {
1.25 paf 199: $$=N(POOL);
1.20 paf 200: OP($$, OP_WITH_ROOT); /* stack: starting context */
1.9 paf 201: P($$, $2); /* diving code; stack: context,name */
1.1 paf 202: };
1.20 paf 203:
1.1 paf 204: constructor_value:
1.32 paf 205: constructor_one_param_value
206: | constructor_two_params_value /* $var(=;2*2) $var(%d;2*2) $var(+;1) */
1.1 paf 207: ;
1.27 paf 208:
1.32 paf 209: constructor_one_param_value:
210: empty_value /* optimized $var() case */
211: | STRING /* optimized $var(STRING) case */
212: | complex_constructor_param_value /* $var(something complex) */
1.1 paf 213: ;
214: complex_constructor_param_value: complex_constructor_param_body {
1.25 paf 215: $$=N(POOL);
1.3 paf 216: OP($$, OP_CREATE_EWPOOL); /* stack: empty write context */
1.9 paf 217: P($$, $1); /* some codes to that context */
218: OP($$, OP_REDUCE_EWPOOL); /* context=pop; stack: context.value() */
1.1 paf 219: };
1.27 paf 220: complex_constructor_param_body: codes__excluding_sole_str_literal;
221: codes__excluding_sole_str_literal: action | code codes { $$=$1; P($$, $2) };
222:
1.32 paf 223: constructor_two_params_value: STRING ';' constructor_one_param_value {
1.7 paf 224: char *operator_or_fmt=LA2S($1)->cstr();
1.25 paf 225: $$=N(POOL);
1.9 paf 226: P($$, $1); /* stack: ncontext name operator_or_fmt */
1.3 paf 227: P($$, $3); /* stack: ncontext name operator_or_fmt expr */
1.1 paf 228: switch(operator_or_fmt[0]) {
229: case '=': case '%':
1.3 paf 230: OP($$, OP_EXPRESSION_EVAL);
1.1 paf 231: break;
232: case '+': case '-': case '*': case '/':
1.3 paf 233: OP($$, OP_MODIFY_EVAL);
1.1 paf 234: break;
235: default:
1.6 paf 236: strcpy(PC->error, "invalid modification operator");
237: YYERROR;
1.1 paf 238: }
239: /* stack: ncontext name value */
240: };
241:
242: /* call */
243:
1.28 paf 244: call: '^' name_without_curly_rdive store_params EON { /* ^field.$method{vasya} */
245: $$=$2; /* with_xxx,diving code; stack: context,method_name */
1.9 paf 246: OP($$, OP_GET_METHOD_FRAME); /* stack: context,method_frame */
247: P($$, $3); /* filling method_frame.store_params */
248: OP($$, OP_CALL); /* method_frame=pop; ncontext=pop; call(ncontext,method_frame) */
1.1 paf 249: };
250:
1.9 paf 251: store_params: store_param | store_params store_param { $$=$1; P($$, $2) };
1.1 paf 252: store_param: store_round_param | store_curly_param;
253: store_round_param: '(' store_param_parts ')' {$$=$2};
1.31 paf 254: store_param_parts:
1.32 paf 255: store_param_part
256: | store_param_parts ';' store_param_part { $$=$1; P($$, $3) }
1.31 paf 257: ;
1.10 paf 258: store_curly_param: '{' maybe_codes '}' {
1.25 paf 259: $$=N(POOL);
1.29 paf 260: PCA($$, $2);
1.9 paf 261: OP($$, OP_STORE_PARAM);
1.1 paf 262: };
1.32 paf 263: store_param_part:
1.33 paf 264: empty /* optimized () case */
265: | STRING { /* optimized (STRING) case */
1.32 paf 266: $$=$1;
267: OP($$, OP_STORE_PARAM);
268: }
1.33 paf 269: | complex_constructor_param_value { /* (something complex) */
1.32 paf 270: $$=$1;
271: OP($$, OP_STORE_PARAM);
272: }
273: ;
1.1 paf 274:
275: /* name */
276:
1.20 paf 277: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P($$, $2) };
1.1 paf 278:
1.9 paf 279: name_path: name_step | name_path name_step { $$=$1; P($$, $2) };
1.1 paf 280: name_step: name_advance1 '.';
281: name_advance1: name_expr_value {
282: /* stack: context */
283: $$=$1; /* stack: context,name */
1.9 paf 284: OP($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 285: };
286: name_advance2: name_expr_value {
287: /* stack: context */
288: $$=$1; /* stack: context,name */
1.9 paf 289: OP($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 290: }
1.4 paf 291: | STRING BOGUS
1.1 paf 292: ;
293: name_expr_value:
1.4 paf 294: STRING /* subname_is_const */
1.1 paf 295: | name_expr_subvar_value /* $subname_is_var_value */
296: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value[$...] */
297: ;
298: name_expr_subvar_value: '$' subvar_ref_name_rdive {
299: $$=$2;
1.9 paf 300: OP($$, OP_GET_ELEMENT);
1.1 paf 301: };
1.4 paf 302: name_expr_with_subvar_value: STRING subvar_get_writes {
1.25 paf 303: $$=N(POOL);
1.3 paf 304: OP($$, OP_CREATE_EWPOOL);
1.9 paf 305: P($$, $1);
1.17 paf 306: OP($$, OP_WRITE);
1.9 paf 307: P($$, $2);
308: OP($$, OP_REDUCE_EWPOOL);
1.1 paf 309: };
1.18 paf 310: subvar_ref_name_rdive: subvar_ref_name_rdive_read | subvar_ref_name_rdive_root;
311: subvar_ref_name_rdive_read: STRING {
1.25 paf 312: $$=N(POOL);
1.18 paf 313: OP($$, OP_WITH_READ);
1.9 paf 314: P($$, $1);
1.1 paf 315: };
1.18 paf 316: subvar_ref_name_rdive_root: ':' STRING {
1.25 paf 317: $$=N(POOL);
1.18 paf 318: OP($$, OP_WITH_ROOT);
319: P($$, $2);
320: };
1.9 paf 321: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P($$, $2) };
1.1 paf 322: subvar__get_write: '$' subvar_ref_name_rdive {
323: $$=$2;
1.17 paf 324: OP($$, OP_GET_ELEMENT__WRITE);
1.1 paf 325: };
326:
327:
328: /* with */
329:
330: with: '$' name_without_curly_rdive '{' codes '}' {
331: $$=$2;
1.9 paf 332: OP($$, OP_CREATE_RWPOOL);
333: P($$, $4);
334: OP($$, OP_REDUCE_RWPOOL);
1.17 paf 335: OP($$, OP_WRITE);
1.1 paf 336: };
337:
1.27 paf 338: /* basics */
1.1 paf 339:
1.4 paf 340: write_str_literal: STRING {
1.30 paf 341: if(LA2S($1)->size()) {
342: $$=$1;
343: OP($$, OP_WRITE);
344: } else {
345: // optimized case of special end of macro. see yylex
346: $$=N(POOL);
347: }
1.26 paf 348: };
1.32 paf 349: empty_value: /* empty */ { $$=L(NEW VString(POOL)) };
1.25 paf 350: empty: /* empty */ { $$=N(POOL) };
1.1 paf 351:
352: %%
353:
354: /*
355: 000$111(2222)00
356: 000$111{3333}00
1.9 paf 357: $,^: push,=0
1.1 paf 358: 1:( { break=pop
359: 2:( ) pop
360: 3:{ } pop
361:
362: 000^111(2222)4444{33333}4000
1.9 paf 363: $,^: push,=0
1.1 paf 364: 1:( { break=pop
365: 2:( )=4
366: 3:{ }=4
367: 4:[^({]=pop
368: */
369:
370: int yylex(YYSTYPE *lvalp, void *pc) {
371: #define lexical_brackets_nestage PC->brackets_nestages[PC->sp]
372:
373: register int c;
374: int result;
375:
376: if(PC->pending_state) {
377: result=PC->pending_state;
378: PC->pending_state=0;
379: return result;
380: }
381:
1.9 paf 382: char *begin=PC->source;
383: char *end;
384: int begin_line=PC->line;
1.1 paf 385: while(1) {
1.9 paf 386: c=*(end=(PC->source++));
1.1 paf 387:
1.4 paf 388: if(c=='\n') {
1.1 paf 389: PC->line++;
1.8 paf 390: PC->col=0;
1.10 paf 391: } else
1.4 paf 392: PC->col++;
1.1 paf 393:
394: /* escaping: ^^ ^$ ^; ^) ^} ^( ^{ */
395: if(c=='^') {
396: char pending_c=*PC->source;
397:
1.9 paf 398: if(pending_c=='^' || pending_c=='$' || pending_c==';' ||
399: pending_c=='(' || pending_c==')' ||
400: pending_c=='{' || pending_c=='}') {
1.1 paf 401: /* append piece till ^ */
1.9 paf 402: PC->string->APPEND(begin, end-begin, PC->file, begin_line);
1.1 paf 403: /* reset piece 'start' position & line */
1.9 paf 404: begin=PC->source/*^*/;
405: begin_line=PC->line;
1.1 paf 406: /* skip over ^ and _ */
407: PC->source+=2;
408: /* skip analysis = forced literal */
409: continue;
410: }
411: }
412: switch(PC->ls) {
1.10 paf 413:
414: // USER'S = NOT OURS
1.1 paf 415: case LS_USER:
416: if(c=='$') {
1.10 paf 417: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.1 paf 418: result=c;
419: goto break2;
420: }
421: if(c=='^') {
1.10 paf 422: push_LS(PC, LS_METHOD_NAME);
423: result=c;
424: goto break2;
425: }
426: if(c=='@' && PC->col==0+1) {
1.1 paf 427: result=c;
1.10 paf 428: push_LS(PC, LS_DEF_NAME);
429: goto break2;
430: }
431:
432: break;
433:
434: // METHOD DEFINITION
435: case LS_DEF_NAME:
436: if(c=='[') {
437: result=c;
438: PC->ls=LS_DEF_PARAMS;
439: goto break2;
440: }
1.37 ! paf 441: if(c=='\n') {
1.10 paf 442: result=c;
1.37 ! paf 443: PC->ls=LS_SPEC_CODE;
1.10 paf 444: goto break2;
445: }
446: break;
447: case LS_DEF_PARAMS:
448: if(c==';') {
449: result=c;
450: goto break2;
451: }
452: if(c==']') {
453: result=c;
454: PC->ls=*PC->source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
455: goto break2;
456: }
457: if(c=='\n') { // wrong. bailing out
458: result=c;
459: pop_LS(PC);
460: goto break2;
461: }
462: break;
463: case LS_DEF_LOCALS:
464: if(c=='[' || c==';') {
465: result=c;
466: goto break2;
467: }
468: if(c==']') {
469: result=c;
470: PC->ls=LS_DEF_COMMENT;
471: goto break2;
472: }
473: if(c=='\n') { // wrong. bailing out
474: result=c;
475: pop_LS(PC);
476: goto break2;
477: }
478: break;
479: case LS_DEF_COMMENT:
480: if(c=='\n') {
481: result=c;
482: pop_LS(PC);
1.37 ! paf 483: goto break2;
! 484: }
! 485: break;
! 486:
! 487: case LS_SPEC_CODE:
! 488: if(c=='\n') {
! 489: result=c;
! 490: if(*PC->source=='@' || *PC->source==0) // end of special_code
! 491: pop_LS(PC);
1.1 paf 492: goto break2;
493: }
494: break;
495:
1.10 paf 496: // VARIABLE GET/PUT/WITH
1.1 paf 497: case LS_VAR_NAME_SIMPLE:
498: if(c==0 ||
499: c==' '|| c=='\t' || c=='\n' ||
500: c==')' || c=='}') {
501: pop_LS(PC);
1.32 paf 502: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 503: result=EON;
1.1 paf 504: goto break2;
505: }
1.13 paf 506: if(begin==end && c=='{') { /* ${name}, no need of EON, switching LS */
1.1 paf 507: PC->ls=LS_VAR_NAME_CURLY;
508: result=c;
509: goto break2;
510: }
1.18 paf 511: if(c==':') {
512: result=c;
513: goto break2;
514: }
1.1 paf 515: if(c=='(') {
516: PC->ls=LS_VAR_ROUND;
517: lexical_brackets_nestage=1;
518: result=c;
519: goto break2;
520: }
521: if(c=='{') {
522: PC->ls=LS_VAR_CURLY;
523: lexical_brackets_nestage=1;
524: result=c;
525: goto break2;
526: }
527: if(c=='.'/* name part delim */ || c=='$'/* name part subvar */) {
528: result=c;
529: goto break2;
530: }
531: break;
532: case LS_VAR_NAME_CURLY:
1.18 paf 533: if(c==':') {
534: result=c;
535: goto break2;
536: }
1.1 paf 537: if(c=='}') { /* ${name} finished, restoring LS */
538: pop_LS(PC);
539: result=c;
540: goto break2;
541: }
542: if(c=='.'/* name part delim */ || c=='$'/*name part subvar*/) {
543: result=c;
544: goto break2;
545: }
546: break;
547: case LS_VAR_ROUND:
548: if(c=='$') {
1.10 paf 549: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.1 paf 550: result=c;
551: goto break2;
552: }
553: if(c=='^') {
1.10 paf 554: push_LS(PC, LS_METHOD_NAME);
1.1 paf 555: result=c;
556: goto break2;
557: }
558: if(c==')') {
559: if(--lexical_brackets_nestage==0) {
560: pop_LS(PC);
561: result=c;
562: goto break2;
563: }
564: }
565: if(c==';'/* operator_or_fmt;value delim */) {
566: result=c;
567: goto break2;
568: }
569: if(c=='(')
570: lexical_brackets_nestage++;
571: break;
572: case LS_VAR_CURLY:
573: if(c=='$') {
1.10 paf 574: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.1 paf 575: result=c;
576: goto break2;
577: }
578: if(c=='^') {
1.10 paf 579: push_LS(PC, LS_METHOD_NAME);
1.1 paf 580: result=c;
581: goto break2;
582: }
583: if(c=='}')
584: if(--lexical_brackets_nestage==0) {
585: pop_LS(PC);
586: result=c;
587: goto break2;
588: }
589: if(c=='{')
590: lexical_brackets_nestage++;
591: break;
592:
1.10 paf 593: // METHOD CALL
1.1 paf 594: case LS_METHOD_NAME:
595: if(c=='(') {
596: PC->ls=LS_METHOD_ROUND;
597: lexical_brackets_nestage=1;
598: result=c;
599: goto break2;
600: }
601: if(c=='{') {
602: PC->ls=LS_METHOD_CURLY;
603: lexical_brackets_nestage=1;
604: result=c;
605: goto break2;
606: }
607: if(c=='.'/* name part delim */ || c=='$'/* name part subvar */) {
608: result=c;
609: goto break2;
610: }
611: break;
612: case LS_METHOD_ROUND:
613: if(c=='$') {
1.10 paf 614: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.1 paf 615: result=c;
616: goto break2;
617: }
618: if(c=='^') {
1.10 paf 619: push_LS(PC, LS_METHOD_NAME);
1.1 paf 620: result=c;
621: goto break2;
622: }
623: if(c==';'/* param delim */) {
624: result=c;
625: goto break2;
626: }
627: if(c==')')
628: if(--lexical_brackets_nestage==0) {
629: PC->ls=LS_METHOD_AFTER;
630: result=c;
631: goto break2;
632: }
633: if(c=='(')
634: lexical_brackets_nestage++;
635: break;
636: case LS_METHOD_CURLY:
637: if(c=='$') {
1.10 paf 638: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.1 paf 639: result=c;
640: goto break2;
641: }
642: if(c=='^') {
1.10 paf 643: push_LS(PC, LS_METHOD_NAME);
1.1 paf 644: result=c;
645: goto break2;
646: }
647: if(c=='}')
648: if(--lexical_brackets_nestage==0) {
649: PC->ls=LS_METHOD_AFTER;
650: result=c;
651: goto break2;
652: }
653: if(c=='{')
654: lexical_brackets_nestage++;
655: break;
656: case LS_METHOD_AFTER:
657: if(c=='(') {/* )( }( */
658: PC->ls=LS_METHOD_ROUND;
659: lexical_brackets_nestage=1;
660: result=c;
661: goto break2;
662: }
663: if(c=='{') {/* ){ }{ */
664: PC->ls=LS_METHOD_CURLY;
665: lexical_brackets_nestage=1;
666: result=c;
667: goto break2;
668: }
669: pop_LS(PC);
1.32 paf 670: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 671: result=EON;
1.1 paf 672: goto break2;
673: }
1.9 paf 674: if(c==0) {
1.1 paf 675: result=-1;
676: break;
677: }
678: }
679:
680: break2:
1.9 paf 681: if(begin==end)
1.1 paf 682: return result;
683: else {
684: PC->pending_state=result;
1.10 paf 685: // strip last \n before LS_DEF_NAME or EOF
686: if((c=='@' || c==0) && end[-1]=='\n')
687: end--;
1.30 paf 688: if(end!=begin) {
689: // append last piece
690: PC->string->APPEND(begin, end-begin, PC->file, begin_line/*, start_col*/);
691: }
1.17 paf 692: // create STRING value: array of OP_VALUE+vstring
1.25 paf 693: *lvalp=L(NEW VString(PC->string));
1.10 paf 694: // new pieces storage
1.25 paf 695: PC->string=NEW String(POOL);
1.10 paf 696: // go!
1.4 paf 697: return STRING;
1.1 paf 698: }
699: }
700:
1.9 paf 701: int real_yyerror(parse_control *pc, char *s) /* Called by yyparse on error */
1.1 paf 702: {
1.16 paf 703: //fprintf(stderr, "[%s]\n", s);
1.6 paf 704:
705: s[MAX_STRING-1]=0; strcpy(pc->error, s);
1.1 paf 706: return 1;
707: }
708:
709: static void
1.9 paf 710: yyprint(
1.1 paf 711: FILE *file,
712: int type,
713: YYSTYPE value)
714: {
1.9 paf 715: if(type==STRING)
716: fprintf(file, " \"%s\"", LA2S(value)->cstr());
1.1 paf 717: }
718:
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