Annotation of parser3/src/main/compile.y, revision 1.56
1.24 paf 1: /*
1.56 ! paf 2: $Id: compile.y,v 1.55 2001/03/06 15:02:48 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"
1.39 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:
1.56 ! paf 45: /* numerical */
1.55 paf 46: %left '-' '+'
47: %left '*' '/'
1.56 ! paf 48: %left NEG /* negation: unary - */
! 49: /* bitwise */
! 50: %left INV /* invertion: unary ~ */
! 51:
! 52: /* logical */
! 53: %left NOT /* not: unary ! */
1.1 paf 54:
55: %%
56:
1.10 paf 57: all:
58: one_big_piece {
1.25 paf 59: String& name_main=*NEW String(POOL);
1.11 paf 60: name_main.APPEND_CONST(MAIN_METHOD_NAME);
1.25 paf 61: Array& param_names=*NEW Array(POOL);
62: Array& local_names=*NEW Array(POOL);
1.34 paf 63: Method& method=*NEW Method(POOL, name_main, param_names, local_names, *$1);
64: PC->vclass->add_method(name_main, method);
1.10 paf 65: }
66: | methods;
67:
68: methods: method | methods method;
69: one_big_piece: maybe_codes;
70:
1.34 paf 71: method: control_method | code_method;
72:
73: control_method: '@' STRING '\n'
74: control_strings {
1.38 paf 75: String& name=*SLA2S($2);
1.34 paf 76: YYSTYPE strings_code=$4;
1.37 paf 77: if(strings_code->size()<1*2) {
78: strcpy(PC->error, "@");
79: strcat(PC->error, name.cstr());
80: strcat(PC->error, " is empty");
81: YYERROR;
82: }
1.36 paf 83: if(name==CLASS_NAME) {
1.34 paf 84: if(strings_code->size()==1*2)
1.38 paf 85: PC->vclass->set_name(*SLA2S(strings_code));
1.34 paf 86: else {
87: strcpy(PC->error, "@"CLASS_NAME" must contain sole name");
88: YYERROR;
89: }
90: } else {
1.36 paf 91: if(name==USES_NAME) {
1.34 paf 92: for(int i=0; i<strings_code->size(); i+=2) {
1.38 paf 93: String *file=SLA2S(strings_code, i);
1.35 paf 94: file->APPEND_CONST(".p");
95: PC->request->use(file->cstr(), 0);
1.34 paf 96: }
1.45 paf 97: } else if(name==BASE_NAME) {
98: if(strings_code->size()==1*2) {
99: String& base_name=*SLA2S(strings_code);
100: VClass *base=static_cast<VClass *>(
101: PC->request->classes().get(base_name));
102: if(!base) {
103: strcpy(PC->error, base_name.cstr());
104: strcat(PC->error, ": undefined class in @"BASE_NAME);
1.34 paf 105: YYERROR;
106: }
1.45 paf 107: PC->vclass->set_base(*base);
108: } else {
109: strcpy(PC->error, "@"BASE_NAME" must contain sole name");
110: YYERROR;
1.34 paf 111: }
112: } else {
1.36 paf 113: strcpy(PC->error, name.cstr());
1.34 paf 114: strcat(PC->error, ": invalid special name. valid names are "
1.45 paf 115: CLASS_NAME", "USES_NAME" and "BASE_NAME);
1.34 paf 116: YYERROR;
117: }
118: }
119: };
1.37 paf 120: control_strings: control_string | control_strings control_string { $$=$1; P($$, $2) };
121: control_string: maybe_string '\n';
122: maybe_string: empty | STRING;
1.34 paf 123:
124: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n'
1.10 paf 125: maybe_codes {
1.38 paf 126: const String *name=SLA2S($2);
1.10 paf 127:
128: YYSTYPE params_names_code=$3;
1.25 paf 129: Array& params_names=*NEW Array(POOL);
1.10 paf 130: for(int i=0; i<params_names_code->size(); i+=2)
1.38 paf 131: params_names+=SLA2S(params_names_code, i);
1.10 paf 132:
133: YYSTYPE locals_names_code=$4;
1.25 paf 134: Array& locals_names=*NEW Array(POOL);
1.10 paf 135: for(int i=0; i<locals_names_code->size(); i+=2)
1.38 paf 136: locals_names+=SLA2S(locals_names_code, i);
1.10 paf 137:
1.34 paf 138: Method& method=*NEW Method(POOL, *name, params_names, locals_names, *$7);
139: PC->vclass->add_method(*name, method);
1.8 paf 140: };
1.10 paf 141:
142: maybe_bracketed_strings: empty | bracketed_maybe_strings;
143: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
144: maybe_strings: empty | strings;
145: strings: STRING | strings ';' STRING { $$=$1; P($$, $3) };
146:
147: maybe_comment: empty | STRING;
1.1 paf 148:
149: /* codes */
150:
1.10 paf 151: maybe_codes: empty | codes;
152:
1.1 paf 153: codes: code | codes code {
154: $$=$1;
1.9 paf 155: P($$, $2);
1.1 paf 156: };
157: code: write_str_literal | action;
158: action: get | put | with | call;
159:
160: /* get */
161:
1.42 paf 162: get: '$' get_name {
1.1 paf 163: $$=$2; /* stack: resulting value */
1.54 paf 164: O($$, OP_WRITE); /* value=pop; write(value) */
1.1 paf 165: };
1.43 paf 166: get_name: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 167: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 168: name_without_curly_rdive:
169: name_without_curly_rdive_read
170: | name_without_curly_rdive_root
171: | name_without_curly_rdive_class;
1.19 paf 172: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.25 paf 173: $$=N(POOL);
1.22 paf 174: Array *diving_code=$1;
1.38 paf 175: String *first_name=SLA2S(diving_code);
1.23 paf 176: if(first_name && *first_name==SELF_NAME) {
1.54 paf 177: O($$, OP_WITH_SELF); /* stack: starting context */
1.22 paf 178: P($$, diving_code,
179: /* skip over... */
180: diving_code->size()>2?3/*OP_+string+get_element*/:2/*OP_+string*/);
181: } else {
1.54 paf 182: O($$, OP_WITH_READ); /* stack: starting context */
1.22 paf 183: P($$, diving_code);
184: }
185: /* diving code; stack: current context */
1.1 paf 186: };
1.19 paf 187: name_without_curly_rdive_root: ':' name_without_curly_rdive_code {
1.25 paf 188: $$=N(POOL);
1.54 paf 189: O($$, OP_WITH_ROOT); /* stack: starting context */
1.19 paf 190: P($$, $2); /* diving code; stack: current context */
191: };
1.44 paf 192: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P($$, $2) };
1.19 paf 193: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P($$, $2) };
1.1 paf 194:
195: /* put */
196:
1.52 paf 197: put: '$' name_expr_wdive constructor_value {
1.20 paf 198: $$=$2; /* stack: context,name */
1.52 paf 199: P($$, $3); /* stack: context,name,constructor_value */
1.54 paf 200: O($$, OP_CONSTRUCT); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.20 paf 201: };
1.44 paf 202: name_expr_wdive:
203: name_expr_wdive_write
204: | name_expr_wdive_root
205: | name_expr_wdive_class;
1.28 paf 206: name_expr_wdive_write: name_expr_dive_code {
1.44 paf 207: $$=N(POOL);
1.23 paf 208: Array *diving_code=$1;
1.38 paf 209: String *first_name=SLA2S(diving_code);
1.23 paf 210: if(first_name && *first_name==SELF_NAME) {
1.54 paf 211: O($$, OP_WITH_SELF); /* stack: starting context */
1.23 paf 212: P($$, diving_code,
213: /* skip over... */
214: diving_code->size()>2?3/*OP_+string+get_element*/:2/*OP_+string*/);
215: } else {
1.54 paf 216: O($$, OP_WITH_WRITE); /* stack: starting context */
1.23 paf 217: P($$, diving_code);
218: }
219: /* diving code; stack: current context */
1.20 paf 220: };
1.28 paf 221: name_expr_wdive_root: ':' name_expr_dive_code {
1.25 paf 222: $$=N(POOL);
1.54 paf 223: O($$, OP_WITH_ROOT); /* stack: starting context */
1.9 paf 224: P($$, $2); /* diving code; stack: context,name */
1.1 paf 225: };
1.44 paf 226: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P($$, $2) };
1.20 paf 227:
1.1 paf 228: constructor_value:
1.55 paf 229: '[' any_constructor_code_value ']' { $$=$2 }
1.56 ! paf 230: | '(' any_expr ')' { $$=$2 }
1.52 paf 231: ;
1.55 paf 232: any_constructor_code_value:
233: empty_string_value /* optimized $var[] case */
1.52 paf 234: | STRING /* optimized $var[STRING] case */
1.55 paf 235: | constructor_code_value /* $var[something complex] */
1.1 paf 236: ;
1.55 paf 237: constructor_code_value: constructor_code {
1.25 paf 238: $$=N(POOL);
1.54 paf 239: O($$, OP_CREATE_EWPOOL); /* stack: empty write context */
1.9 paf 240: P($$, $1); /* some codes to that context */
1.54 paf 241: O($$, OP_REDUCE_EWPOOL); /* context=pop; stack: context.value() */
1.1 paf 242: };
1.55 paf 243: constructor_code: codes__excluding_sole_str_literal;
1.27 paf 244: codes__excluding_sole_str_literal: action | code codes { $$=$1; P($$, $2) };
245:
1.1 paf 246: /* call */
247:
1.38 paf 248: call: '^' call_name store_params EON { /* ^field.$method{vasya} */
1.42 paf 249: $$=$2; /* with_xxx,diving code; stack: context,method_junction */
1.54 paf 250: O($$, OP_GET_METHOD_FRAME); /* stack: context,method_frame */
1.9 paf 251: P($$, $3); /* filling method_frame.store_params */
1.54 paf 252: O($$, OP_CALL); /* method_frame=pop; ncontext=pop; call(ncontext,method_frame) */
1.1 paf 253: };
254:
1.43 paf 255: call_name: name_without_curly_rdive;
1.38 paf 256:
1.9 paf 257: store_params: store_param | store_params store_param { $$=$1; P($$, $2) };
1.1 paf 258: store_param: store_round_param | store_curly_param;
1.47 paf 259: store_round_param: '[' store_param_parts ']' {$$=$2};
1.31 paf 260: store_param_parts:
1.32 paf 261: store_param_part
262: | store_param_parts ';' store_param_part { $$=$1; P($$, $3) }
1.31 paf 263: ;
1.10 paf 264: store_curly_param: '{' maybe_codes '}' {
1.25 paf 265: $$=N(POOL);
1.29 paf 266: PCA($$, $2);
1.54 paf 267: O($$, OP_STORE_PARAM);
1.1 paf 268: };
1.32 paf 269: store_param_part:
1.33 paf 270: empty /* optimized () case */
271: | STRING { /* optimized (STRING) case */
1.32 paf 272: $$=$1;
1.54 paf 273: O($$, OP_STORE_PARAM);
1.32 paf 274: }
1.55 paf 275: | constructor_code_value { /* (something complex) */
1.32 paf 276: $$=$1;
1.54 paf 277: O($$, OP_STORE_PARAM);
1.32 paf 278: }
279: ;
1.1 paf 280:
281: /* name */
282:
1.20 paf 283: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P($$, $2) };
1.1 paf 284:
1.9 paf 285: name_path: name_step | name_path name_step { $$=$1; P($$, $2) };
1.1 paf 286: name_step: name_advance1 '.';
287: name_advance1: name_expr_value {
288: /* stack: context */
289: $$=$1; /* stack: context,name */
1.54 paf 290: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 291: };
292: name_advance2: name_expr_value {
293: /* stack: context */
294: $$=$1; /* stack: context,name */
1.54 paf 295: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 296: }
1.4 paf 297: | STRING BOGUS
1.1 paf 298: ;
299: name_expr_value:
1.4 paf 300: STRING /* subname_is_const */
1.1 paf 301: | name_expr_subvar_value /* $subname_is_var_value */
302: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value[$...] */
303: ;
304: name_expr_subvar_value: '$' subvar_ref_name_rdive {
305: $$=$2;
1.54 paf 306: O($$, OP_GET_ELEMENT);
1.1 paf 307: };
1.4 paf 308: name_expr_with_subvar_value: STRING subvar_get_writes {
1.25 paf 309: $$=N(POOL);
1.54 paf 310: O($$, OP_CREATE_EWPOOL);
1.9 paf 311: P($$, $1);
1.54 paf 312: O($$, OP_WRITE);
1.9 paf 313: P($$, $2);
1.54 paf 314: O($$, OP_REDUCE_EWPOOL);
1.1 paf 315: };
1.18 paf 316: subvar_ref_name_rdive: subvar_ref_name_rdive_read | subvar_ref_name_rdive_root;
317: subvar_ref_name_rdive_read: STRING {
1.25 paf 318: $$=N(POOL);
1.54 paf 319: O($$, OP_WITH_READ);
1.9 paf 320: P($$, $1);
1.1 paf 321: };
1.18 paf 322: subvar_ref_name_rdive_root: ':' STRING {
1.25 paf 323: $$=N(POOL);
1.54 paf 324: O($$, OP_WITH_ROOT);
1.18 paf 325: P($$, $2);
326: };
1.9 paf 327: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P($$, $2) };
1.1 paf 328: subvar__get_write: '$' subvar_ref_name_rdive {
329: $$=$2;
1.54 paf 330: O($$, OP_GET_ELEMENT__WRITE);
1.42 paf 331: };
332:
1.44 paf 333: class_prefix: STRING ':' {
1.42 paf 334: String& name=*SLA2S($1);
335: VClass *vclass=static_cast<VClass *>(PC->request->classes().get(name));
336: if(!vclass) {
337: strcpy(PC->error, "'");
338: strcat(PC->error, name.cstr());
339: strcat(PC->error, "' class is undefined in call");
340: YYERROR;
341: }
1.48 paf 342: //TODO: убрать зависимость от статических @USE, сделать имя, а не ссылку
1.42 paf 343: $$=CL(vclass); // vclass
1.1 paf 344: };
345:
346:
347: /* with */
348:
349: with: '$' name_without_curly_rdive '{' codes '}' {
350: $$=$2;
1.54 paf 351: O($$, OP_CREATE_RWPOOL);
1.9 paf 352: P($$, $4);
1.54 paf 353: O($$, OP_REDUCE_RWPOOL);
354: O($$, OP_WRITE);
1.1 paf 355: };
1.53 paf 356:
1.56 ! paf 357: /* expr */
1.53 paf 358:
1.56 ! paf 359: any_expr:
1.55 paf 360: empty_double_value /* optimized $var() case */
1.56 ! paf 361: | expr /* $var(something) */
1.53 paf 362: ;
1.56 ! paf 363: expr:
1.55 paf 364: number
1.56 ! paf 365: | expr '+' expr {
1.55 paf 366: $$=$1; // stack: first operand
367: P($$, $3); // stack: first,second operands
1.56 ! paf 368: O($$, OP_ADD); // value=first+second; stack: value
1.55 paf 369: }
1.56 ! paf 370: | expr '-' expr {
1.55 paf 371: $$=$1; // stack: first operand
372: P($$, $3); // stack: first,second operands
1.56 ! paf 373: O($$, OP_SUB); // value=first-second; stack: value
1.55 paf 374: }
1.56 ! paf 375: | expr '*' expr {
1.53 paf 376: $$=$1; // stack: first operand
377: P($$, $3); // stack: first,second operands
1.54 paf 378: O($$, OP_MUL); // value=first*second; stack: value
1.55 paf 379: }
1.56 ! paf 380: | expr '/' expr {
1.55 paf 381: $$=$1; // stack: first operand
382: P($$, $3); // stack: first,second operands
1.56 ! paf 383: O($$, OP_DIV); // value=first/second; stack: value
! 384: }
! 385: | '-' expr %prec NEG {
! 386: $$=$2; // stack: operand
! 387: O($$, OP_NEG); // value=-operand; stack: value
! 388: }
! 389: | '~' expr %prec INV {
! 390: $$=$2; // stack: operand
! 391: O($$, OP_INV); // value=~operand; stack: value
! 392: }
! 393: | '!' expr %prec NOT {
! 394: $$=$2; // stack: operand
! 395: O($$, OP_NOT); // value=!operand; stack: value
! 396: }
! 397: | '(' expr ')' { $$ = $2; }
! 398: ;
1.55 paf 399:
1.53 paf 400:
401: /*
1.56 ! paf 402: complex_expr_value: complex_expr {
1.53 paf 403: $$=N(POOL);
1.54 paf 404: O($$, OP_CREATE_SWPOOL); /* stack: empty write context * /
1.53 paf 405: P($$, $1); /* some codes to that context * /
1.54 paf 406: O($$, OP_REDUCE_SWPOOL); /* context=pop; stack: context.get_string() * /
1.53 paf 407: };
408: */
1.1 paf 409:
1.27 paf 410: /* basics */
1.1 paf 411:
1.4 paf 412: write_str_literal: STRING {
1.38 paf 413: if(SLA2S($1)->size()) {
1.30 paf 414: $$=$1;
1.54 paf 415: O($$, OP_WRITE);
1.30 paf 416: } else {
417: // optimized case of special end of macro. see yylex
418: $$=N(POOL);
419: }
1.26 paf 420: };
1.54 paf 421: number: STRING {
422: change_string_literal_to_double_literal($$=$1);
423: };
424:
1.55 paf 425: empty_double_value: /* empty */ { $$=VL(NEW VDouble(POOL)) };
426: empty_string_value: /* empty */ { $$=VL(NEW VString(POOL)) };
1.25 paf 427: empty: /* empty */ { $$=N(POOL) };
1.1 paf 428:
429: %%
430:
431: /*
432: 000$111(2222)00
433: 000$111{3333}00
1.9 paf 434: $,^: push,=0
1.1 paf 435: 1:( { break=pop
436: 2:( ) pop
437: 3:{ } pop
438:
439: 000^111(2222)4444{33333}4000
1.9 paf 440: $,^: push,=0
1.1 paf 441: 1:( { break=pop
442: 2:( )=4
443: 3:{ }=4
444: 4:[^({]=pop
445: */
446:
447: int yylex(YYSTYPE *lvalp, void *pc) {
448: #define lexical_brackets_nestage PC->brackets_nestages[PC->sp]
1.48 paf 449: #define RC {result=c; goto break2; }
1.1 paf 450:
451: register int c;
452: int result;
453:
454: if(PC->pending_state) {
455: result=PC->pending_state;
456: PC->pending_state=0;
457: return result;
458: }
459:
1.9 paf 460: char *begin=PC->source;
461: char *end;
462: int begin_line=PC->line;
1.50 paf 463: while(true) {
1.9 paf 464: c=*(end=(PC->source++));
1.1 paf 465:
1.4 paf 466: if(c=='\n') {
1.1 paf 467: PC->line++;
1.8 paf 468: PC->col=0;
1.10 paf 469: } else
1.4 paf 470: PC->col++;
1.1 paf 471:
1.48 paf 472: // escaping: ^^ ^$ ^; ^) ^} ^( ^{ ^"
473: if(c=='^')
474: switch(*PC->source) {
475: case '^': case '$': case ';':
476: case '[': case ']':
477: case '{': case '}':
478: case '"':
1.40 paf 479: if(end!=begin) {
480: // append piece till ^
481: PC->string->APPEND(begin, end-begin, PC->file, begin_line);
482: }
483: // reset piece 'start' position & line
484: begin=PC->source; // ^
1.9 paf 485: begin_line=PC->line;
1.40 paf 486: // skip over ^ and _
1.50 paf 487: PC->source++; PC->col++;
1.40 paf 488: // skip analysis = forced literal
1.1 paf 489: continue;
490: }
491: switch(PC->ls) {
1.10 paf 492:
493: // USER'S = NOT OURS
1.1 paf 494: case LS_USER:
1.48 paf 495: switch(c) {
496: case '$':
1.10 paf 497: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 498: RC;
499: case '^':
500: push_LS(PC, LS_METHOD_NAME);
501: RC;
502: case '@':
503: if(PC->col==0+1) {
504: push_LS(PC, LS_DEF_NAME);
505: RC;
506: }
507: break;
1.1 paf 508: }
1.48 paf 509: break;
510:
511: // STRING IN EXPRESSION
512: case LS_EXPRESSION_STRING:
513: switch(c) {
514: case '"':
515: pop_LS(PC); //"abc".
516: RC;
517: case '$':
518: push_LS(PC, LS_VAR_NAME_SIMPLE);
519: RC;
520: case '^':
1.10 paf 521: push_LS(PC, LS_METHOD_NAME);
1.48 paf 522: RC;
1.10 paf 523: }
524: break;
525:
526: // METHOD DEFINITION
527: case LS_DEF_NAME:
1.48 paf 528: switch(c) {
529: case '[':
1.10 paf 530: PC->ls=LS_DEF_PARAMS;
1.48 paf 531: RC;
532: case '\n':
533: PC->ls=LS_DEF_SPECIAL_BODY;
534: RC;
1.10 paf 535: }
536: break;
1.48 paf 537:
1.10 paf 538: case LS_DEF_PARAMS:
1.48 paf 539: switch(c) {
540: case ';':
541: RC;
542: case ']':
1.10 paf 543: PC->ls=*PC->source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 544: RC;
1.49 paf 545: case '\n': // wrong. bailing out
1.10 paf 546: pop_LS(PC);
1.48 paf 547: RC;
1.10 paf 548: }
549: break;
1.48 paf 550:
1.10 paf 551: case LS_DEF_LOCALS:
1.48 paf 552: switch(c) {
553: case '[':
554: case ';':
555: RC;
556: case ']':
1.10 paf 557: PC->ls=LS_DEF_COMMENT;
1.48 paf 558: RC;
559: case '\n': // wrong. bailing out
1.10 paf 560: pop_LS(PC);
1.48 paf 561: RC;
1.10 paf 562: }
563: break;
1.48 paf 564:
1.10 paf 565: case LS_DEF_COMMENT:
566: if(c=='\n') {
567: pop_LS(PC);
1.48 paf 568: RC;
1.37 paf 569: }
570: break;
571:
1.48 paf 572: case LS_DEF_SPECIAL_BODY:
1.37 paf 573: if(c=='\n') {
1.48 paf 574: switch(*PC->source) {
575: case '@': case 0: // end of special_code
1.37 paf 576: pop_LS(PC);
1.48 paf 577: break;
578: }
579: RC;
580: }
581: break;
582:
583: // (EXPRESSION)
584: case LS_EXPRESSION_BODY:
585: switch(c) {
586: case ')':
587: if(--lexical_brackets_nestage==0)
588: pop_LS(PC); //(EXPRESSION).
589: RC;
590: case '$':
591: push_LS(PC, LS_VAR_NAME_IN_EXPRESSION);
592: RC;
593: case '^':
594: push_LS(PC, LS_METHOD_NAME);
595: RC;
596: case '(':
597: lexical_brackets_nestage++;
598: RC;
599: case '+': case '-': case '*': case '/': case '%':
1.56 ! paf 600: case '!': case '~':
1.49 paf 601: case '&': case '|':
1.56 ! paf 602: case '<': case '>': case '=':
1.48 paf 603: case ';':
604: RC;
605: case '"':
606: push_LS(PC, LS_EXPRESSION_STRING);
607: RC;
1.50 paf 608: case 'l': case 'g': case 'e': case 'n':
1.51 paf 609: if(end==begin) // right after whitespace
610: switch(char next_c=*PC->source) {
611: // case '?': // ok [and bad cases, yacc would bark at them]
612: case 't': // lt gt [et nt]
613: case 'e': // le ge ne [ee]
614: case 'q': // eq [lq gq nq]
615: PC->source++; PC->col++;
616: PC->pending_state=next_c;
617: return c;
1.50 paf 618: }
1.48 paf 619: break;
620: case ' ': case '\t': case '\n':
621: if(end!=begin) {
622: // append piece till whitespace
623: PC->string->APPEND(begin, end-begin, PC->file, begin_line);
624: }
625: // reset piece 'start' position & line
1.50 paf 626: begin=PC->source; // after whitespace
1.48 paf 627: begin_line=PC->line;
628: continue;
1.1 paf 629: }
630: break;
631:
1.10 paf 632: // VARIABLE GET/PUT/WITH
1.1 paf 633: case LS_VAR_NAME_SIMPLE:
1.48 paf 634: case LS_VAR_NAME_IN_EXPRESSION:
635: if(PC->ls==LS_VAR_NAME_IN_EXPRESSION) {
1.56 ! paf 636: // name in expr ends also before binary operators
1.48 paf 637: switch(c) {
638: case '+': case '-': case '*': case '/': case '%':
639: case '&': case '|':
640: case '<': case '>': case '=': case '!':
641: pop_LS(PC);
642: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
643: result=EON;
644: goto break2;
645: }
646: }
647: switch(c) {
648: case 0:
649: case ' ': case '\t': case '\n':
650: case ';':
651: case ']': case '}':
1.1 paf 652: pop_LS(PC);
1.32 paf 653: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 654: result=EON;
1.1 paf 655: goto break2;
1.48 paf 656: case '[':
657: PC->ls=LS_VAR_SQUARE;
1.1 paf 658: lexical_brackets_nestage=1;
1.48 paf 659: RC;
660: case '{':
661: if(begin==end) { // ${name}, no need of EON, switching LS
662: PC->ls=LS_VAR_NAME_CURLY;
663: } else {
664: PC->ls=LS_VAR_CURLY;
665: lexical_brackets_nestage=1;
666: }
667:
668: RC;
669: case '(':
670: PC->ls=LS_EXPRESSION_BODY;
1.1 paf 671: lexical_brackets_nestage=1;
1.48 paf 672: RC;
673: case '.': // name part delim
674: case '$': // name part subvar
675: case ':': // ':name' or 'class:name'
676: RC;
1.1 paf 677: }
678: break;
1.48 paf 679:
1.1 paf 680: case LS_VAR_NAME_CURLY:
1.48 paf 681: switch(c) {
682: case '}': // ${name} finished, restoring LS
1.1 paf 683: pop_LS(PC);
1.48 paf 684: RC;
685: case '.': // name part delim
686: case '$': // name part subvar
687: case ':': // ':name' or 'class:name'
688: RC;
1.1 paf 689: }
690: break;
1.48 paf 691:
692: case LS_VAR_SQUARE:
693: switch(c) {
694: case '$':
1.10 paf 695: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 696: RC;
697: case '^':
1.10 paf 698: push_LS(PC, LS_METHOD_NAME);
1.48 paf 699: RC;
700: case ']':
1.1 paf 701: if(--lexical_brackets_nestage==0) {
702: pop_LS(PC);
1.48 paf 703: RC;
1.1 paf 704: }
1.48 paf 705: break;
706: case ';': // operator_or_fmt;value delim
707: RC;
708: case '[':
709: lexical_brackets_nestage++;
710: break;
1.1 paf 711: }
712: break;
1.48 paf 713:
1.1 paf 714: case LS_VAR_CURLY:
1.48 paf 715: switch(c) {
716: case '$':
1.10 paf 717: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 718: RC;
719: case '^':
1.10 paf 720: push_LS(PC, LS_METHOD_NAME);
1.48 paf 721: RC;
722: case '}':
1.1 paf 723: if(--lexical_brackets_nestage==0) {
724: pop_LS(PC);
1.48 paf 725: RC;
1.1 paf 726: }
1.48 paf 727: break;
728: case '{':
1.1 paf 729: lexical_brackets_nestage++;
1.48 paf 730: break;
731: }
1.1 paf 732: break;
733:
1.10 paf 734: // METHOD CALL
1.1 paf 735: case LS_METHOD_NAME:
1.48 paf 736: switch(c) {
737: case '[':
738: PC->ls=LS_METHOD_SQUARE;
1.1 paf 739: lexical_brackets_nestage=1;
1.48 paf 740: RC;
741: case '{':
1.1 paf 742: PC->ls=LS_METHOD_CURLY;
743: lexical_brackets_nestage=1;
1.48 paf 744: RC;
745: case '.': // name part delim
746: case '$': // name part subvar
747: case ':': // ':name' or 'class:name'
748: RC;
1.1 paf 749: }
750: break;
1.48 paf 751:
752: case LS_METHOD_SQUARE:
753: switch(c) {
754: case '$':
1.10 paf 755: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 756: RC;
757: case '^':
1.10 paf 758: push_LS(PC, LS_METHOD_NAME);
1.48 paf 759: RC;
760: case ';': // param delim
761: RC;
762: case ']':
1.1 paf 763: if(--lexical_brackets_nestage==0) {
764: PC->ls=LS_METHOD_AFTER;
1.48 paf 765: RC;
1.1 paf 766: }
1.48 paf 767: break;
768: case '[':
1.1 paf 769: lexical_brackets_nestage++;
1.48 paf 770: break;
771: }
1.1 paf 772: break;
1.48 paf 773:
1.1 paf 774: case LS_METHOD_CURLY:
1.48 paf 775: switch(c) {
776: case '$':
1.10 paf 777: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 778: RC;
779: case '^':
1.10 paf 780: push_LS(PC, LS_METHOD_NAME);
1.48 paf 781: RC;
782: case '}':
1.1 paf 783: if(--lexical_brackets_nestage==0) {
784: PC->ls=LS_METHOD_AFTER;
1.48 paf 785: RC;
1.1 paf 786: }
1.48 paf 787: break;
788: case '{':
1.1 paf 789: lexical_brackets_nestage++;
1.48 paf 790: break;
791: }
1.1 paf 792: break;
1.48 paf 793:
1.1 paf 794: case LS_METHOD_AFTER:
1.47 paf 795: if(c=='[') {/* )( }( */
1.48 paf 796: PC->ls=LS_METHOD_SQUARE;
1.1 paf 797: lexical_brackets_nestage=1;
1.48 paf 798: RC;
1.1 paf 799: }
800: if(c=='{') {/* ){ }{ */
801: PC->ls=LS_METHOD_CURLY;
802: lexical_brackets_nestage=1;
1.48 paf 803: RC;
1.1 paf 804: }
805: pop_LS(PC);
1.32 paf 806: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 807: result=EON;
1.1 paf 808: goto break2;
809: }
1.9 paf 810: if(c==0) {
1.1 paf 811: result=-1;
812: break;
813: }
814: }
815:
816: break2:
1.9 paf 817: if(begin==end)
1.1 paf 818: return result;
819: else {
820: PC->pending_state=result;
1.10 paf 821: // strip last \n before LS_DEF_NAME or EOF
822: if((c=='@' || c==0) && end[-1]=='\n')
823: end--;
1.30 paf 824: if(end!=begin) {
825: // append last piece
826: PC->string->APPEND(begin, end-begin, PC->file, begin_line/*, start_col*/);
827: }
1.17 paf 828: // create STRING value: array of OP_VALUE+vstring
1.55 paf 829: *lvalp=VL(NEW VString(*PC->string));
1.10 paf 830: // new pieces storage
1.25 paf 831: PC->string=NEW String(POOL);
1.10 paf 832: // go!
1.4 paf 833: return STRING;
1.1 paf 834: }
835: }
836:
1.9 paf 837: int real_yyerror(parse_control *pc, char *s) /* Called by yyparse on error */
1.1 paf 838: {
1.16 paf 839: //fprintf(stderr, "[%s]\n", s);
1.6 paf 840:
1.46 paf 841: strncpy(pc->error, s, MAX_STRING); // TODO: перепроверить с треклятым последним байтом
1.1 paf 842: return 1;
843: }
844:
845: static void
1.9 paf 846: yyprint(
1.1 paf 847: FILE *file,
848: int type,
849: YYSTYPE value)
850: {
1.9 paf 851: if(type==STRING)
1.38 paf 852: fprintf(file, " \"%s\"", SLA2S(value)->cstr());
1.1 paf 853: }
854:
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