Annotation of parser3/src/main/compile.y, revision 1.54
1.24 paf 1: /*
1.54 ! paf 2: $Id: compile.y,v 1.53 2001/03/06 14:09:36 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
1.50 paf 44: %token LOGICAL_AND LOGICAL_OR
1.1 paf 45:
46: %%
47:
1.10 paf 48: all:
49: one_big_piece {
1.25 paf 50: String& name_main=*NEW String(POOL);
1.11 paf 51: name_main.APPEND_CONST(MAIN_METHOD_NAME);
1.25 paf 52: Array& param_names=*NEW Array(POOL);
53: Array& local_names=*NEW Array(POOL);
1.34 paf 54: Method& method=*NEW Method(POOL, name_main, param_names, local_names, *$1);
55: PC->vclass->add_method(name_main, method);
1.10 paf 56: }
57: | methods;
58:
59: methods: method | methods method;
60: one_big_piece: maybe_codes;
61:
1.34 paf 62: method: control_method | code_method;
63:
64: control_method: '@' STRING '\n'
65: control_strings {
1.38 paf 66: String& name=*SLA2S($2);
1.34 paf 67: YYSTYPE strings_code=$4;
1.37 paf 68: if(strings_code->size()<1*2) {
69: strcpy(PC->error, "@");
70: strcat(PC->error, name.cstr());
71: strcat(PC->error, " is empty");
72: YYERROR;
73: }
1.36 paf 74: if(name==CLASS_NAME) {
1.34 paf 75: if(strings_code->size()==1*2)
1.38 paf 76: PC->vclass->set_name(*SLA2S(strings_code));
1.34 paf 77: else {
78: strcpy(PC->error, "@"CLASS_NAME" must contain sole name");
79: YYERROR;
80: }
81: } else {
1.36 paf 82: if(name==USES_NAME) {
1.34 paf 83: for(int i=0; i<strings_code->size(); i+=2) {
1.38 paf 84: String *file=SLA2S(strings_code, i);
1.35 paf 85: file->APPEND_CONST(".p");
86: PC->request->use(file->cstr(), 0);
1.34 paf 87: }
1.45 paf 88: } else if(name==BASE_NAME) {
89: if(strings_code->size()==1*2) {
90: String& base_name=*SLA2S(strings_code);
91: VClass *base=static_cast<VClass *>(
92: PC->request->classes().get(base_name));
93: if(!base) {
94: strcpy(PC->error, base_name.cstr());
95: strcat(PC->error, ": undefined class in @"BASE_NAME);
1.34 paf 96: YYERROR;
97: }
1.45 paf 98: PC->vclass->set_base(*base);
99: } else {
100: strcpy(PC->error, "@"BASE_NAME" must contain sole name");
101: YYERROR;
1.34 paf 102: }
103: } else {
1.36 paf 104: strcpy(PC->error, name.cstr());
1.34 paf 105: strcat(PC->error, ": invalid special name. valid names are "
1.45 paf 106: CLASS_NAME", "USES_NAME" and "BASE_NAME);
1.34 paf 107: YYERROR;
108: }
109: }
110: };
1.37 paf 111: control_strings: control_string | control_strings control_string { $$=$1; P($$, $2) };
112: control_string: maybe_string '\n';
113: maybe_string: empty | STRING;
1.34 paf 114:
115: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n'
1.10 paf 116: maybe_codes {
1.38 paf 117: const String *name=SLA2S($2);
1.10 paf 118:
119: YYSTYPE params_names_code=$3;
1.25 paf 120: Array& params_names=*NEW Array(POOL);
1.10 paf 121: for(int i=0; i<params_names_code->size(); i+=2)
1.38 paf 122: params_names+=SLA2S(params_names_code, i);
1.10 paf 123:
124: YYSTYPE locals_names_code=$4;
1.25 paf 125: Array& locals_names=*NEW Array(POOL);
1.10 paf 126: for(int i=0; i<locals_names_code->size(); i+=2)
1.38 paf 127: locals_names+=SLA2S(locals_names_code, i);
1.10 paf 128:
1.34 paf 129: Method& method=*NEW Method(POOL, *name, params_names, locals_names, *$7);
130: PC->vclass->add_method(*name, method);
1.8 paf 131: };
1.10 paf 132:
133: maybe_bracketed_strings: empty | bracketed_maybe_strings;
134: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
135: maybe_strings: empty | strings;
136: strings: STRING | strings ';' STRING { $$=$1; P($$, $3) };
137:
138: maybe_comment: empty | STRING;
1.1 paf 139:
140: /* codes */
141:
1.10 paf 142: maybe_codes: empty | codes;
143:
1.1 paf 144: codes: code | codes code {
145: $$=$1;
1.9 paf 146: P($$, $2);
1.1 paf 147: };
148: code: write_str_literal | action;
149: action: get | put | with | call;
150:
151: /* get */
152:
1.42 paf 153: get: '$' get_name {
1.1 paf 154: $$=$2; /* stack: resulting value */
1.54 ! paf 155: O($$, OP_WRITE); /* value=pop; write(value) */
1.1 paf 156: };
1.43 paf 157: get_name: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 158: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 159: name_without_curly_rdive:
160: name_without_curly_rdive_read
161: | name_without_curly_rdive_root
162: | name_without_curly_rdive_class;
1.19 paf 163: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.25 paf 164: $$=N(POOL);
1.22 paf 165: Array *diving_code=$1;
1.38 paf 166: String *first_name=SLA2S(diving_code);
1.23 paf 167: if(first_name && *first_name==SELF_NAME) {
1.54 ! paf 168: O($$, OP_WITH_SELF); /* stack: starting context */
1.22 paf 169: P($$, diving_code,
170: /* skip over... */
171: diving_code->size()>2?3/*OP_+string+get_element*/:2/*OP_+string*/);
172: } else {
1.54 ! paf 173: O($$, OP_WITH_READ); /* stack: starting context */
1.22 paf 174: P($$, diving_code);
175: }
176: /* diving code; stack: current context */
1.1 paf 177: };
1.19 paf 178: name_without_curly_rdive_root: ':' name_without_curly_rdive_code {
1.25 paf 179: $$=N(POOL);
1.54 ! paf 180: O($$, OP_WITH_ROOT); /* stack: starting context */
1.19 paf 181: P($$, $2); /* diving code; stack: current context */
182: };
1.44 paf 183: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P($$, $2) };
1.19 paf 184: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P($$, $2) };
1.1 paf 185:
186: /* put */
187:
1.52 paf 188: put: '$' name_expr_wdive constructor_value {
1.20 paf 189: $$=$2; /* stack: context,name */
1.52 paf 190: P($$, $3); /* stack: context,name,constructor_value */
1.54 ! paf 191: O($$, OP_CONSTRUCT); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.20 paf 192: };
1.44 paf 193: name_expr_wdive:
194: name_expr_wdive_write
195: | name_expr_wdive_root
196: | name_expr_wdive_class;
1.28 paf 197: name_expr_wdive_write: name_expr_dive_code {
1.44 paf 198: $$=N(POOL);
1.23 paf 199: Array *diving_code=$1;
1.38 paf 200: String *first_name=SLA2S(diving_code);
1.23 paf 201: if(first_name && *first_name==SELF_NAME) {
1.54 ! paf 202: O($$, OP_WITH_SELF); /* stack: starting context */
1.23 paf 203: P($$, diving_code,
204: /* skip over... */
205: diving_code->size()>2?3/*OP_+string+get_element*/:2/*OP_+string*/);
206: } else {
1.54 ! paf 207: O($$, OP_WITH_WRITE); /* stack: starting context */
1.23 paf 208: P($$, diving_code);
209: }
210: /* diving code; stack: current context */
1.20 paf 211: };
1.28 paf 212: name_expr_wdive_root: ':' name_expr_dive_code {
1.25 paf 213: $$=N(POOL);
1.54 ! paf 214: O($$, OP_WITH_ROOT); /* stack: starting context */
1.9 paf 215: P($$, $2); /* diving code; stack: context,name */
1.1 paf 216: };
1.44 paf 217: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P($$, $2) };
1.20 paf 218:
1.1 paf 219: constructor_value:
1.52 paf 220: '[' constructor_code_value ']' { $$=$2 }
1.53 paf 221: | '(' expression_value ')' { $$=$2 }
1.52 paf 222: ;
223: constructor_code_value:
224: empty_value /* optimized $var[] case */
225: | STRING /* optimized $var[STRING] case */
226: | complex_constructor_code_value /* $var[something complex] */
1.1 paf 227: ;
1.52 paf 228: complex_constructor_code_value: complex_constructor_code {
1.25 paf 229: $$=N(POOL);
1.54 ! paf 230: O($$, OP_CREATE_EWPOOL); /* stack: empty write context */
1.9 paf 231: P($$, $1); /* some codes to that context */
1.54 ! paf 232: O($$, OP_REDUCE_EWPOOL); /* context=pop; stack: context.value() */
1.1 paf 233: };
1.52 paf 234: complex_constructor_code: codes__excluding_sole_str_literal;
1.27 paf 235: codes__excluding_sole_str_literal: action | code codes { $$=$1; P($$, $2) };
236:
1.1 paf 237: /* call */
238:
1.38 paf 239: call: '^' call_name store_params EON { /* ^field.$method{vasya} */
1.42 paf 240: $$=$2; /* with_xxx,diving code; stack: context,method_junction */
1.54 ! paf 241: O($$, OP_GET_METHOD_FRAME); /* stack: context,method_frame */
1.9 paf 242: P($$, $3); /* filling method_frame.store_params */
1.54 ! paf 243: O($$, OP_CALL); /* method_frame=pop; ncontext=pop; call(ncontext,method_frame) */
1.1 paf 244: };
245:
1.43 paf 246: call_name: name_without_curly_rdive;
1.38 paf 247:
1.9 paf 248: store_params: store_param | store_params store_param { $$=$1; P($$, $2) };
1.1 paf 249: store_param: store_round_param | store_curly_param;
1.47 paf 250: store_round_param: '[' store_param_parts ']' {$$=$2};
1.31 paf 251: store_param_parts:
1.32 paf 252: store_param_part
253: | store_param_parts ';' store_param_part { $$=$1; P($$, $3) }
1.31 paf 254: ;
1.10 paf 255: store_curly_param: '{' maybe_codes '}' {
1.25 paf 256: $$=N(POOL);
1.29 paf 257: PCA($$, $2);
1.54 ! paf 258: O($$, OP_STORE_PARAM);
1.1 paf 259: };
1.32 paf 260: store_param_part:
1.33 paf 261: empty /* optimized () case */
262: | STRING { /* optimized (STRING) case */
1.32 paf 263: $$=$1;
1.54 ! paf 264: O($$, OP_STORE_PARAM);
1.32 paf 265: }
1.52 paf 266: | complex_constructor_code_value { /* (something complex) */
1.32 paf 267: $$=$1;
1.54 ! paf 268: O($$, OP_STORE_PARAM);
1.32 paf 269: }
270: ;
1.1 paf 271:
272: /* name */
273:
1.20 paf 274: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P($$, $2) };
1.1 paf 275:
1.9 paf 276: name_path: name_step | name_path name_step { $$=$1; P($$, $2) };
1.1 paf 277: name_step: name_advance1 '.';
278: name_advance1: name_expr_value {
279: /* stack: context */
280: $$=$1; /* stack: context,name */
1.54 ! paf 281: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 282: };
283: name_advance2: name_expr_value {
284: /* stack: context */
285: $$=$1; /* stack: context,name */
1.54 ! paf 286: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 287: }
1.4 paf 288: | STRING BOGUS
1.1 paf 289: ;
290: name_expr_value:
1.4 paf 291: STRING /* subname_is_const */
1.1 paf 292: | name_expr_subvar_value /* $subname_is_var_value */
293: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value[$...] */
294: ;
295: name_expr_subvar_value: '$' subvar_ref_name_rdive {
296: $$=$2;
1.54 ! paf 297: O($$, OP_GET_ELEMENT);
1.1 paf 298: };
1.4 paf 299: name_expr_with_subvar_value: STRING subvar_get_writes {
1.25 paf 300: $$=N(POOL);
1.54 ! paf 301: O($$, OP_CREATE_EWPOOL);
1.9 paf 302: P($$, $1);
1.54 ! paf 303: O($$, OP_WRITE);
1.9 paf 304: P($$, $2);
1.54 ! paf 305: O($$, OP_REDUCE_EWPOOL);
1.1 paf 306: };
1.18 paf 307: subvar_ref_name_rdive: subvar_ref_name_rdive_read | subvar_ref_name_rdive_root;
308: subvar_ref_name_rdive_read: STRING {
1.25 paf 309: $$=N(POOL);
1.54 ! paf 310: O($$, OP_WITH_READ);
1.9 paf 311: P($$, $1);
1.1 paf 312: };
1.18 paf 313: subvar_ref_name_rdive_root: ':' STRING {
1.25 paf 314: $$=N(POOL);
1.54 ! paf 315: O($$, OP_WITH_ROOT);
1.18 paf 316: P($$, $2);
317: };
1.9 paf 318: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P($$, $2) };
1.1 paf 319: subvar__get_write: '$' subvar_ref_name_rdive {
320: $$=$2;
1.54 ! paf 321: O($$, OP_GET_ELEMENT__WRITE);
1.42 paf 322: };
323:
1.44 paf 324: class_prefix: STRING ':' {
1.42 paf 325: String& name=*SLA2S($1);
326: VClass *vclass=static_cast<VClass *>(PC->request->classes().get(name));
327: if(!vclass) {
328: strcpy(PC->error, "'");
329: strcat(PC->error, name.cstr());
330: strcat(PC->error, "' class is undefined in call");
331: YYERROR;
332: }
1.48 paf 333: //TODO: убрать зависимость от статических @USE, сделать имя, а не ссылку
1.42 paf 334: $$=CL(vclass); // vclass
1.1 paf 335: };
336:
337:
338: /* with */
339:
340: with: '$' name_without_curly_rdive '{' codes '}' {
341: $$=$2;
1.54 ! paf 342: O($$, OP_CREATE_RWPOOL);
1.9 paf 343: P($$, $4);
1.54 ! paf 344: O($$, OP_REDUCE_RWPOOL);
! 345: O($$, OP_WRITE);
1.1 paf 346: };
1.53 paf 347:
348: /* expression */
349:
350: expression_value:
351: empty_value /* optimized $var() case */
1.54 ! paf 352: | number /* optimized $var(STRING) case */
1.53 paf 353: | complex_expression /* $var(something complex) */
354: ;
355: complex_expression: expression_operand '*' expression_operand {
356: $$=$1; // stack: first operand
357: P($$, $3); // stack: first,second operands
1.54 ! paf 358: O($$, OP_MUL); // value=first*second; stack: value
1.53 paf 359: };
1.54 ! paf 360: expression_operand: number;
1.53 paf 361:
362: /*
363: complex_expression_value: complex_expression {
364: $$=N(POOL);
1.54 ! paf 365: O($$, OP_CREATE_SWPOOL); /* stack: empty write context * /
1.53 paf 366: P($$, $1); /* some codes to that context * /
1.54 ! paf 367: O($$, OP_REDUCE_SWPOOL); /* context=pop; stack: context.get_string() * /
1.53 paf 368: };
369: */
1.1 paf 370:
1.27 paf 371: /* basics */
1.1 paf 372:
1.4 paf 373: write_str_literal: STRING {
1.38 paf 374: if(SLA2S($1)->size()) {
1.30 paf 375: $$=$1;
1.54 ! paf 376: O($$, OP_WRITE);
1.30 paf 377: } else {
378: // optimized case of special end of macro. see yylex
379: $$=N(POOL);
380: }
1.26 paf 381: };
1.54 ! paf 382: number: STRING {
! 383: change_string_literal_to_double_literal($$=$1);
! 384: };
! 385:
1.38 paf 386: empty_value: /* empty */ { $$=SL(NEW VString(POOL)) };
1.25 paf 387: empty: /* empty */ { $$=N(POOL) };
1.1 paf 388:
389: %%
390:
391: /*
392: 000$111(2222)00
393: 000$111{3333}00
1.9 paf 394: $,^: push,=0
1.1 paf 395: 1:( { break=pop
396: 2:( ) pop
397: 3:{ } pop
398:
399: 000^111(2222)4444{33333}4000
1.9 paf 400: $,^: push,=0
1.1 paf 401: 1:( { break=pop
402: 2:( )=4
403: 3:{ }=4
404: 4:[^({]=pop
405: */
406:
407: int yylex(YYSTYPE *lvalp, void *pc) {
408: #define lexical_brackets_nestage PC->brackets_nestages[PC->sp]
1.48 paf 409: #define RC {result=c; goto break2; }
1.1 paf 410:
411: register int c;
412: int result;
413:
414: if(PC->pending_state) {
415: result=PC->pending_state;
416: PC->pending_state=0;
417: return result;
418: }
419:
1.9 paf 420: char *begin=PC->source;
421: char *end;
422: int begin_line=PC->line;
1.50 paf 423: while(true) {
1.9 paf 424: c=*(end=(PC->source++));
1.1 paf 425:
1.4 paf 426: if(c=='\n') {
1.1 paf 427: PC->line++;
1.8 paf 428: PC->col=0;
1.10 paf 429: } else
1.4 paf 430: PC->col++;
1.1 paf 431:
1.48 paf 432: // escaping: ^^ ^$ ^; ^) ^} ^( ^{ ^"
433: if(c=='^')
434: switch(*PC->source) {
435: case '^': case '$': case ';':
436: case '[': case ']':
437: case '{': case '}':
438: case '"':
1.40 paf 439: if(end!=begin) {
440: // append piece till ^
441: PC->string->APPEND(begin, end-begin, PC->file, begin_line);
442: }
443: // reset piece 'start' position & line
444: begin=PC->source; // ^
1.9 paf 445: begin_line=PC->line;
1.40 paf 446: // skip over ^ and _
1.50 paf 447: PC->source++; PC->col++;
1.40 paf 448: // skip analysis = forced literal
1.1 paf 449: continue;
450: }
451: switch(PC->ls) {
1.10 paf 452:
453: // USER'S = NOT OURS
1.1 paf 454: case LS_USER:
1.48 paf 455: switch(c) {
456: case '$':
1.10 paf 457: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 458: RC;
459: case '^':
460: push_LS(PC, LS_METHOD_NAME);
461: RC;
462: case '@':
463: if(PC->col==0+1) {
464: push_LS(PC, LS_DEF_NAME);
465: RC;
466: }
467: break;
1.1 paf 468: }
1.48 paf 469: break;
470:
471: // STRING IN EXPRESSION
472: case LS_EXPRESSION_STRING:
473: switch(c) {
474: case '"':
475: pop_LS(PC); //"abc".
476: RC;
477: case '$':
478: push_LS(PC, LS_VAR_NAME_SIMPLE);
479: RC;
480: case '^':
1.10 paf 481: push_LS(PC, LS_METHOD_NAME);
1.48 paf 482: RC;
1.10 paf 483: }
484: break;
485:
486: // METHOD DEFINITION
487: case LS_DEF_NAME:
1.48 paf 488: switch(c) {
489: case '[':
1.10 paf 490: PC->ls=LS_DEF_PARAMS;
1.48 paf 491: RC;
492: case '\n':
493: PC->ls=LS_DEF_SPECIAL_BODY;
494: RC;
1.10 paf 495: }
496: break;
1.48 paf 497:
1.10 paf 498: case LS_DEF_PARAMS:
1.48 paf 499: switch(c) {
500: case ';':
501: RC;
502: case ']':
1.10 paf 503: PC->ls=*PC->source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 504: RC;
1.49 paf 505: case '\n': // wrong. bailing out
1.10 paf 506: pop_LS(PC);
1.48 paf 507: RC;
1.10 paf 508: }
509: break;
1.48 paf 510:
1.10 paf 511: case LS_DEF_LOCALS:
1.48 paf 512: switch(c) {
513: case '[':
514: case ';':
515: RC;
516: case ']':
1.10 paf 517: PC->ls=LS_DEF_COMMENT;
1.48 paf 518: RC;
519: case '\n': // wrong. bailing out
1.10 paf 520: pop_LS(PC);
1.48 paf 521: RC;
1.10 paf 522: }
523: break;
1.48 paf 524:
1.10 paf 525: case LS_DEF_COMMENT:
526: if(c=='\n') {
527: pop_LS(PC);
1.48 paf 528: RC;
1.37 paf 529: }
530: break;
531:
1.48 paf 532: case LS_DEF_SPECIAL_BODY:
1.37 paf 533: if(c=='\n') {
1.48 paf 534: switch(*PC->source) {
535: case '@': case 0: // end of special_code
1.37 paf 536: pop_LS(PC);
1.48 paf 537: break;
538: }
539: RC;
540: }
541: break;
542:
543: // (EXPRESSION)
544: case LS_EXPRESSION_BODY:
545: switch(c) {
546: case ')':
547: if(--lexical_brackets_nestage==0)
548: pop_LS(PC); //(EXPRESSION).
549: RC;
550: case '$':
551: push_LS(PC, LS_VAR_NAME_IN_EXPRESSION);
552: RC;
553: case '^':
554: push_LS(PC, LS_METHOD_NAME);
555: RC;
556: case '(':
557: lexical_brackets_nestage++;
558: RC;
559: case '+': case '-': case '*': case '/': case '%':
1.49 paf 560: case '&': case '|':
561: case '<': case '>': case '=': case '!':
1.48 paf 562: case ';':
563: RC;
564: case '"':
565: push_LS(PC, LS_EXPRESSION_STRING);
566: RC;
1.50 paf 567: case 'l': case 'g': case 'e': case 'n':
1.51 paf 568: if(end==begin) // right after whitespace
569: switch(char next_c=*PC->source) {
570: // case '?': // ok [and bad cases, yacc would bark at them]
571: case 't': // lt gt [et nt]
572: case 'e': // le ge ne [ee]
573: case 'q': // eq [lq gq nq]
574: PC->source++; PC->col++;
575: PC->pending_state=next_c;
576: return c;
1.50 paf 577: }
1.48 paf 578: break;
579: case ' ': case '\t': case '\n':
580: if(end!=begin) {
581: // append piece till whitespace
582: PC->string->APPEND(begin, end-begin, PC->file, begin_line);
583: }
584: // reset piece 'start' position & line
1.50 paf 585: begin=PC->source; // after whitespace
1.48 paf 586: begin_line=PC->line;
587: continue;
1.1 paf 588: }
589: break;
590:
1.10 paf 591: // VARIABLE GET/PUT/WITH
1.1 paf 592: case LS_VAR_NAME_SIMPLE:
1.48 paf 593: case LS_VAR_NAME_IN_EXPRESSION:
594: if(PC->ls==LS_VAR_NAME_IN_EXPRESSION) {
595: // name in expression ends also before binary operators
596: switch(c) {
597: case '+': case '-': case '*': case '/': case '%':
598: case '&': case '|':
599: case '<': case '>': case '=': case '!':
600: pop_LS(PC);
601: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
602: result=EON;
603: goto break2;
604: }
605: }
606: switch(c) {
607: case 0:
608: case ' ': case '\t': case '\n':
609: case ';':
610: case ']': case '}':
1.1 paf 611: pop_LS(PC);
1.32 paf 612: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 613: result=EON;
1.1 paf 614: goto break2;
1.48 paf 615: case '[':
616: PC->ls=LS_VAR_SQUARE;
1.1 paf 617: lexical_brackets_nestage=1;
1.48 paf 618: RC;
619: case '{':
620: if(begin==end) { // ${name}, no need of EON, switching LS
621: PC->ls=LS_VAR_NAME_CURLY;
622: } else {
623: PC->ls=LS_VAR_CURLY;
624: lexical_brackets_nestage=1;
625: }
626:
627: RC;
628: case '(':
629: PC->ls=LS_EXPRESSION_BODY;
1.1 paf 630: lexical_brackets_nestage=1;
1.48 paf 631: RC;
632: case '.': // name part delim
633: case '$': // name part subvar
634: case ':': // ':name' or 'class:name'
635: RC;
1.1 paf 636: }
637: break;
1.48 paf 638:
1.1 paf 639: case LS_VAR_NAME_CURLY:
1.48 paf 640: switch(c) {
641: case '}': // ${name} finished, restoring LS
1.1 paf 642: pop_LS(PC);
1.48 paf 643: RC;
644: case '.': // name part delim
645: case '$': // name part subvar
646: case ':': // ':name' or 'class:name'
647: RC;
1.1 paf 648: }
649: break;
1.48 paf 650:
651: case LS_VAR_SQUARE:
652: switch(c) {
653: case '$':
1.10 paf 654: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 655: RC;
656: case '^':
1.10 paf 657: push_LS(PC, LS_METHOD_NAME);
1.48 paf 658: RC;
659: case ']':
1.1 paf 660: if(--lexical_brackets_nestage==0) {
661: pop_LS(PC);
1.48 paf 662: RC;
1.1 paf 663: }
1.48 paf 664: break;
665: case ';': // operator_or_fmt;value delim
666: RC;
667: case '[':
668: lexical_brackets_nestage++;
669: break;
1.1 paf 670: }
671: break;
1.48 paf 672:
1.1 paf 673: case LS_VAR_CURLY:
1.48 paf 674: switch(c) {
675: case '$':
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 '{':
1.1 paf 688: lexical_brackets_nestage++;
1.48 paf 689: break;
690: }
1.1 paf 691: break;
692:
1.10 paf 693: // METHOD CALL
1.1 paf 694: case LS_METHOD_NAME:
1.48 paf 695: switch(c) {
696: case '[':
697: PC->ls=LS_METHOD_SQUARE;
1.1 paf 698: lexical_brackets_nestage=1;
1.48 paf 699: RC;
700: case '{':
1.1 paf 701: PC->ls=LS_METHOD_CURLY;
702: lexical_brackets_nestage=1;
1.48 paf 703: RC;
704: case '.': // name part delim
705: case '$': // name part subvar
706: case ':': // ':name' or 'class:name'
707: RC;
1.1 paf 708: }
709: break;
1.48 paf 710:
711: case LS_METHOD_SQUARE:
712: switch(c) {
713: case '$':
1.10 paf 714: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 715: RC;
716: case '^':
1.10 paf 717: push_LS(PC, LS_METHOD_NAME);
1.48 paf 718: RC;
719: case ';': // param delim
720: RC;
721: case ']':
1.1 paf 722: if(--lexical_brackets_nestage==0) {
723: PC->ls=LS_METHOD_AFTER;
1.48 paf 724: RC;
1.1 paf 725: }
1.48 paf 726: break;
727: case '[':
1.1 paf 728: lexical_brackets_nestage++;
1.48 paf 729: break;
730: }
1.1 paf 731: break;
1.48 paf 732:
1.1 paf 733: case LS_METHOD_CURLY:
1.48 paf 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 '}':
1.1 paf 742: if(--lexical_brackets_nestage==0) {
743: PC->ls=LS_METHOD_AFTER;
1.48 paf 744: RC;
1.1 paf 745: }
1.48 paf 746: break;
747: case '{':
1.1 paf 748: lexical_brackets_nestage++;
1.48 paf 749: break;
750: }
1.1 paf 751: break;
1.48 paf 752:
1.1 paf 753: case LS_METHOD_AFTER:
1.47 paf 754: if(c=='[') {/* )( }( */
1.48 paf 755: PC->ls=LS_METHOD_SQUARE;
1.1 paf 756: lexical_brackets_nestage=1;
1.48 paf 757: RC;
1.1 paf 758: }
759: if(c=='{') {/* ){ }{ */
760: PC->ls=LS_METHOD_CURLY;
761: lexical_brackets_nestage=1;
1.48 paf 762: RC;
1.1 paf 763: }
764: pop_LS(PC);
1.32 paf 765: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 766: result=EON;
1.1 paf 767: goto break2;
768: }
1.9 paf 769: if(c==0) {
1.1 paf 770: result=-1;
771: break;
772: }
773: }
774:
775: break2:
1.9 paf 776: if(begin==end)
1.1 paf 777: return result;
778: else {
779: PC->pending_state=result;
1.10 paf 780: // strip last \n before LS_DEF_NAME or EOF
781: if((c=='@' || c==0) && end[-1]=='\n')
782: end--;
1.30 paf 783: if(end!=begin) {
784: // append last piece
785: PC->string->APPEND(begin, end-begin, PC->file, begin_line/*, start_col*/);
786: }
1.17 paf 787: // create STRING value: array of OP_VALUE+vstring
1.45 paf 788: *lvalp=SL(NEW VString(*PC->string));
1.10 paf 789: // new pieces storage
1.25 paf 790: PC->string=NEW String(POOL);
1.10 paf 791: // go!
1.4 paf 792: return STRING;
1.1 paf 793: }
794: }
795:
1.9 paf 796: int real_yyerror(parse_control *pc, char *s) /* Called by yyparse on error */
1.1 paf 797: {
1.16 paf 798: //fprintf(stderr, "[%s]\n", s);
1.6 paf 799:
1.46 paf 800: strncpy(pc->error, s, MAX_STRING); // TODO: перепроверить с треклятым последним байтом
1.1 paf 801: return 1;
802: }
803:
804: static void
1.9 paf 805: yyprint(
1.1 paf 806: FILE *file,
807: int type,
808: YYSTYPE value)
809: {
1.9 paf 810: if(type==STRING)
1.38 paf 811: fprintf(file, " \"%s\"", SLA2S(value)->cstr());
1.1 paf 812: }
813:
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