Annotation of parser3/src/main/compile.y, revision 1.60
1.24 paf 1: /*
1.60 ! paf 2: $Id: compile.y,v 1.59 2001/03/06 17:18:57 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:
1.58 paf 45: %token BAD_STRING_COMPARISON_OPERATOR
46:
1.59 paf 47: %token LAND "&&"
1.58 paf 48: %token LOR "||"
1.59 paf 49: %token LXOR "##"
1.58 paf 50:
51: %token NLE "<="
52: %token NGE ">="
53: %token NEQ "=="
54: %token NNE "!="
55:
56: %token SLT "lt"
57: %token SGT "gt"
58: %token SLE "le"
59: %token SGE "ge"
60: %token SEQ "eq"
61: %token SNE "ne"
62:
1.57 paf 63: /* logical */
1.59 paf 64: %left '<' '>' "<=" ">=" "##"
1.57 paf 65: %left "==" "!="
66: %left "||"
67: %left "&&"
68: %left NOT /* not: unary ! */
69:
70: /* bitwise */
1.59 paf 71: %left '#'
1.57 paf 72: %left '&' '|'
73: %left INV /* invertion: unary ~ */
74:
1.56 paf 75: /* numerical */
1.55 paf 76: %left '-' '+'
1.57 paf 77: %left '*' '/' '%'
1.56 paf 78: %left NEG /* negation: unary - */
1.1 paf 79:
80: %%
81:
1.10 paf 82: all:
83: one_big_piece {
1.25 paf 84: String& name_main=*NEW String(POOL);
1.11 paf 85: name_main.APPEND_CONST(MAIN_METHOD_NAME);
1.25 paf 86: Array& param_names=*NEW Array(POOL);
87: Array& local_names=*NEW Array(POOL);
1.34 paf 88: Method& method=*NEW Method(POOL, name_main, param_names, local_names, *$1);
89: PC->vclass->add_method(name_main, method);
1.10 paf 90: }
91: | methods;
92:
93: methods: method | methods method;
94: one_big_piece: maybe_codes;
95:
1.34 paf 96: method: control_method | code_method;
97:
98: control_method: '@' STRING '\n'
99: control_strings {
1.38 paf 100: String& name=*SLA2S($2);
1.34 paf 101: YYSTYPE strings_code=$4;
1.37 paf 102: if(strings_code->size()<1*2) {
103: strcpy(PC->error, "@");
104: strcat(PC->error, name.cstr());
105: strcat(PC->error, " is empty");
106: YYERROR;
107: }
1.36 paf 108: if(name==CLASS_NAME) {
1.34 paf 109: if(strings_code->size()==1*2)
1.38 paf 110: PC->vclass->set_name(*SLA2S(strings_code));
1.34 paf 111: else {
112: strcpy(PC->error, "@"CLASS_NAME" must contain sole name");
113: YYERROR;
114: }
115: } else {
1.36 paf 116: if(name==USES_NAME) {
1.34 paf 117: for(int i=0; i<strings_code->size(); i+=2) {
1.38 paf 118: String *file=SLA2S(strings_code, i);
1.35 paf 119: file->APPEND_CONST(".p");
120: PC->request->use(file->cstr(), 0);
1.34 paf 121: }
1.45 paf 122: } else if(name==BASE_NAME) {
123: if(strings_code->size()==1*2) {
124: String& base_name=*SLA2S(strings_code);
125: VClass *base=static_cast<VClass *>(
126: PC->request->classes().get(base_name));
127: if(!base) {
128: strcpy(PC->error, base_name.cstr());
129: strcat(PC->error, ": undefined class in @"BASE_NAME);
1.34 paf 130: YYERROR;
131: }
1.45 paf 132: PC->vclass->set_base(*base);
133: } else {
134: strcpy(PC->error, "@"BASE_NAME" must contain sole name");
135: YYERROR;
1.34 paf 136: }
137: } else {
1.36 paf 138: strcpy(PC->error, name.cstr());
1.34 paf 139: strcat(PC->error, ": invalid special name. valid names are "
1.45 paf 140: CLASS_NAME", "USES_NAME" and "BASE_NAME);
1.34 paf 141: YYERROR;
142: }
143: }
144: };
1.37 paf 145: control_strings: control_string | control_strings control_string { $$=$1; P($$, $2) };
146: control_string: maybe_string '\n';
147: maybe_string: empty | STRING;
1.34 paf 148:
149: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n'
1.10 paf 150: maybe_codes {
1.38 paf 151: const String *name=SLA2S($2);
1.10 paf 152:
153: YYSTYPE params_names_code=$3;
1.25 paf 154: Array& params_names=*NEW Array(POOL);
1.10 paf 155: for(int i=0; i<params_names_code->size(); i+=2)
1.38 paf 156: params_names+=SLA2S(params_names_code, i);
1.10 paf 157:
158: YYSTYPE locals_names_code=$4;
1.25 paf 159: Array& locals_names=*NEW Array(POOL);
1.10 paf 160: for(int i=0; i<locals_names_code->size(); i+=2)
1.38 paf 161: locals_names+=SLA2S(locals_names_code, i);
1.10 paf 162:
1.34 paf 163: Method& method=*NEW Method(POOL, *name, params_names, locals_names, *$7);
164: PC->vclass->add_method(*name, method);
1.8 paf 165: };
1.10 paf 166:
167: maybe_bracketed_strings: empty | bracketed_maybe_strings;
168: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
169: maybe_strings: empty | strings;
170: strings: STRING | strings ';' STRING { $$=$1; P($$, $3) };
171:
172: maybe_comment: empty | STRING;
1.1 paf 173:
174: /* codes */
175:
1.10 paf 176: maybe_codes: empty | codes;
177:
1.1 paf 178: codes: code | codes code {
179: $$=$1;
1.9 paf 180: P($$, $2);
1.1 paf 181: };
182: code: write_str_literal | action;
183: action: get | put | with | call;
184:
185: /* get */
186:
1.42 paf 187: get: '$' get_name {
1.1 paf 188: $$=$2; /* stack: resulting value */
1.54 paf 189: O($$, OP_WRITE); /* value=pop; write(value) */
1.1 paf 190: };
1.43 paf 191: get_name: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 192: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 193: name_without_curly_rdive:
194: name_without_curly_rdive_read
195: | name_without_curly_rdive_root
196: | name_without_curly_rdive_class;
1.19 paf 197: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.25 paf 198: $$=N(POOL);
1.22 paf 199: Array *diving_code=$1;
1.38 paf 200: String *first_name=SLA2S(diving_code);
1.23 paf 201: if(first_name && *first_name==SELF_NAME) {
1.54 paf 202: O($$, OP_WITH_SELF); /* stack: starting context */
1.22 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_READ); /* stack: starting context */
1.22 paf 208: P($$, diving_code);
209: }
210: /* diving code; stack: current context */
1.1 paf 211: };
1.19 paf 212: name_without_curly_rdive_root: ':' name_without_curly_rdive_code {
1.25 paf 213: $$=N(POOL);
1.54 paf 214: O($$, OP_WITH_ROOT); /* stack: starting context */
1.19 paf 215: P($$, $2); /* diving code; stack: current context */
216: };
1.44 paf 217: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P($$, $2) };
1.19 paf 218: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P($$, $2) };
1.1 paf 219:
220: /* put */
221:
1.52 paf 222: put: '$' name_expr_wdive constructor_value {
1.20 paf 223: $$=$2; /* stack: context,name */
1.52 paf 224: P($$, $3); /* stack: context,name,constructor_value */
1.54 paf 225: O($$, OP_CONSTRUCT); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.20 paf 226: };
1.44 paf 227: name_expr_wdive:
228: name_expr_wdive_write
229: | name_expr_wdive_root
230: | name_expr_wdive_class;
1.28 paf 231: name_expr_wdive_write: name_expr_dive_code {
1.44 paf 232: $$=N(POOL);
1.23 paf 233: Array *diving_code=$1;
1.38 paf 234: String *first_name=SLA2S(diving_code);
1.23 paf 235: if(first_name && *first_name==SELF_NAME) {
1.54 paf 236: O($$, OP_WITH_SELF); /* stack: starting context */
1.23 paf 237: P($$, diving_code,
238: /* skip over... */
239: diving_code->size()>2?3/*OP_+string+get_element*/:2/*OP_+string*/);
240: } else {
1.54 paf 241: O($$, OP_WITH_WRITE); /* stack: starting context */
1.23 paf 242: P($$, diving_code);
243: }
244: /* diving code; stack: current context */
1.20 paf 245: };
1.28 paf 246: name_expr_wdive_root: ':' name_expr_dive_code {
1.25 paf 247: $$=N(POOL);
1.54 paf 248: O($$, OP_WITH_ROOT); /* stack: starting context */
1.9 paf 249: P($$, $2); /* diving code; stack: context,name */
1.1 paf 250: };
1.44 paf 251: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P($$, $2) };
1.20 paf 252:
1.1 paf 253: constructor_value:
1.55 paf 254: '[' any_constructor_code_value ']' { $$=$2 }
1.56 paf 255: | '(' any_expr ')' { $$=$2 }
1.52 paf 256: ;
1.55 paf 257: any_constructor_code_value:
258: empty_string_value /* optimized $var[] case */
1.52 paf 259: | STRING /* optimized $var[STRING] case */
1.55 paf 260: | constructor_code_value /* $var[something complex] */
1.1 paf 261: ;
1.55 paf 262: constructor_code_value: constructor_code {
1.25 paf 263: $$=N(POOL);
1.54 paf 264: O($$, OP_CREATE_EWPOOL); /* stack: empty write context */
1.9 paf 265: P($$, $1); /* some codes to that context */
1.54 paf 266: O($$, OP_REDUCE_EWPOOL); /* context=pop; stack: context.value() */
1.1 paf 267: };
1.55 paf 268: constructor_code: codes__excluding_sole_str_literal;
1.27 paf 269: codes__excluding_sole_str_literal: action | code codes { $$=$1; P($$, $2) };
270:
1.1 paf 271: /* call */
272:
1.38 paf 273: call: '^' call_name store_params EON { /* ^field.$method{vasya} */
1.42 paf 274: $$=$2; /* with_xxx,diving code; stack: context,method_junction */
1.54 paf 275: O($$, OP_GET_METHOD_FRAME); /* stack: context,method_frame */
1.9 paf 276: P($$, $3); /* filling method_frame.store_params */
1.54 paf 277: O($$, OP_CALL); /* method_frame=pop; ncontext=pop; call(ncontext,method_frame) */
1.1 paf 278: };
279:
1.43 paf 280: call_name: name_without_curly_rdive;
1.38 paf 281:
1.9 paf 282: store_params: store_param | store_params store_param { $$=$1; P($$, $2) };
1.1 paf 283: store_param: store_round_param | store_curly_param;
1.47 paf 284: store_round_param: '[' store_param_parts ']' {$$=$2};
1.31 paf 285: store_param_parts:
1.32 paf 286: store_param_part
287: | store_param_parts ';' store_param_part { $$=$1; P($$, $3) }
1.31 paf 288: ;
1.10 paf 289: store_curly_param: '{' maybe_codes '}' {
1.25 paf 290: $$=N(POOL);
1.29 paf 291: PCA($$, $2);
1.54 paf 292: O($$, OP_STORE_PARAM);
1.1 paf 293: };
1.32 paf 294: store_param_part:
1.33 paf 295: empty /* optimized () case */
296: | STRING { /* optimized (STRING) case */
1.32 paf 297: $$=$1;
1.54 paf 298: O($$, OP_STORE_PARAM);
1.32 paf 299: }
1.55 paf 300: | constructor_code_value { /* (something complex) */
1.32 paf 301: $$=$1;
1.54 paf 302: O($$, OP_STORE_PARAM);
1.32 paf 303: }
304: ;
1.1 paf 305:
306: /* name */
307:
1.20 paf 308: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P($$, $2) };
1.1 paf 309:
1.9 paf 310: name_path: name_step | name_path name_step { $$=$1; P($$, $2) };
1.1 paf 311: name_step: name_advance1 '.';
312: name_advance1: name_expr_value {
313: /* stack: context */
314: $$=$1; /* stack: context,name */
1.54 paf 315: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 316: };
317: name_advance2: name_expr_value {
318: /* stack: context */
319: $$=$1; /* stack: context,name */
1.54 paf 320: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 321: }
1.4 paf 322: | STRING BOGUS
1.1 paf 323: ;
324: name_expr_value:
1.4 paf 325: STRING /* subname_is_const */
1.1 paf 326: | name_expr_subvar_value /* $subname_is_var_value */
327: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value[$...] */
328: ;
329: name_expr_subvar_value: '$' subvar_ref_name_rdive {
330: $$=$2;
1.54 paf 331: O($$, OP_GET_ELEMENT);
1.1 paf 332: };
1.4 paf 333: name_expr_with_subvar_value: STRING subvar_get_writes {
1.25 paf 334: $$=N(POOL);
1.54 paf 335: O($$, OP_CREATE_EWPOOL);
1.9 paf 336: P($$, $1);
1.54 paf 337: O($$, OP_WRITE);
1.9 paf 338: P($$, $2);
1.54 paf 339: O($$, OP_REDUCE_EWPOOL);
1.1 paf 340: };
1.18 paf 341: subvar_ref_name_rdive: subvar_ref_name_rdive_read | subvar_ref_name_rdive_root;
342: subvar_ref_name_rdive_read: STRING {
1.25 paf 343: $$=N(POOL);
1.54 paf 344: O($$, OP_WITH_READ);
1.9 paf 345: P($$, $1);
1.1 paf 346: };
1.18 paf 347: subvar_ref_name_rdive_root: ':' STRING {
1.25 paf 348: $$=N(POOL);
1.54 paf 349: O($$, OP_WITH_ROOT);
1.18 paf 350: P($$, $2);
351: };
1.9 paf 352: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P($$, $2) };
1.1 paf 353: subvar__get_write: '$' subvar_ref_name_rdive {
354: $$=$2;
1.54 paf 355: O($$, OP_GET_ELEMENT__WRITE);
1.42 paf 356: };
357:
1.44 paf 358: class_prefix: STRING ':' {
1.42 paf 359: String& name=*SLA2S($1);
360: VClass *vclass=static_cast<VClass *>(PC->request->classes().get(name));
361: if(!vclass) {
362: strcpy(PC->error, "'");
363: strcat(PC->error, name.cstr());
364: strcat(PC->error, "' class is undefined in call");
365: YYERROR;
366: }
1.48 paf 367: //TODO: убрать зависимость от статических @USE, сделать имя, а не ссылку
1.42 paf 368: $$=CL(vclass); // vclass
1.1 paf 369: };
370:
371:
372: /* with */
373:
374: with: '$' name_without_curly_rdive '{' codes '}' {
375: $$=$2;
1.54 paf 376: O($$, OP_CREATE_RWPOOL);
1.9 paf 377: P($$, $4);
1.54 paf 378: O($$, OP_REDUCE_RWPOOL);
379: O($$, OP_WRITE);
1.1 paf 380: };
1.53 paf 381:
1.56 paf 382: /* expr */
1.53 paf 383:
1.56 paf 384: any_expr:
1.55 paf 385: empty_double_value /* optimized $var() case */
1.56 paf 386: | expr /* $var(something) */
1.53 paf 387: ;
1.56 paf 388: expr:
1.55 paf 389: number
1.60 ! paf 390: | '(' expr ')' { $$ = $2; }
! 391: /* stack: operand // stack: @operand */
! 392: | '-' expr %prec NEG { $$=$2; O($$, OP_NEG) }
! 393: | '~' expr %prec INV { $$=$2; O($$, OP_INV) }
! 394: | '!' expr %prec NOT { $$=$2; O($$, OP_NOT) }
1.57 paf 395: /*todo: def in fexists*/
1.60 ! paf 396: /* stack: a,b // stack: a@b */
! 397: | expr '-' expr { $$=$1; P($$, $3); O($$, OP_SUB) }
! 398: | expr '+' expr { $$=$1; P($$, $3); O($$, OP_ADD) }
! 399: | expr '*' expr { $$=$1; P($$, $3); O($$, OP_MUL) }
! 400: | expr '/' expr { $$=$1; P($$, $3); O($$, OP_DIV) }
! 401: | expr '%' expr { $$=$1; P($$, $3); O($$, OP_MOD) }
! 402: | expr '&' expr { $$=$1; P($$, $3); O($$, OP_BIN_AND) }
! 403: | expr '|' expr { $$=$1; P($$, $3); O($$, OP_BIN_OR) }
! 404: | expr '#' expr { $$=$1; P($$, $3); O($$, OP_BIN_XOR) }
! 405: | expr "&&" expr { $$=$1; P($$, $3); O($$, OP_LOG_AND) }
! 406: | expr "||" expr { $$=$1; P($$, $3); O($$, OP_LOG_OR) }
! 407: | expr "##" expr { $$=$1; P($$, $3); O($$, OP_LOG_XOR) }
! 408: | expr '<' expr { $$=$1; P($$, $3); O($$, OP_NUM_LT) }
! 409: | expr '>' expr { $$=$1; P($$, $3); O($$, OP_NUM_GT) }
! 410: | expr "<=" expr { $$=$1; P($$, $3); O($$, OP_NUM_LE) }
! 411: | expr ">=" expr { $$=$1; P($$, $3); O($$, OP_NUM_GE) }
! 412: | expr "==" expr { $$=$1; P($$, $3); O($$, OP_NUM_EQ) }
! 413: | expr "!=" expr { $$=$1; P($$, $3); O($$, OP_NUM_NE) }
1.57 paf 414: /*
415: OP_STR_LT, OP_STR_GT, OP_STR_LE, OP_STR_GE, OP_STR_EQ, OP_STR_NE
416: */
1.56 paf 417: ;
1.55 paf 418:
1.53 paf 419: /*
1.56 paf 420: complex_expr_value: complex_expr {
1.53 paf 421: $$=N(POOL);
1.54 paf 422: O($$, OP_CREATE_SWPOOL); /* stack: empty write context * /
1.53 paf 423: P($$, $1); /* some codes to that context * /
1.54 paf 424: O($$, OP_REDUCE_SWPOOL); /* context=pop; stack: context.get_string() * /
1.53 paf 425: };
426: */
1.1 paf 427:
1.27 paf 428: /* basics */
1.1 paf 429:
1.4 paf 430: write_str_literal: STRING {
1.59 paf 431: $$=$1;
432: O($$, OP_WRITE);
433: /*
434:
435: if(SLA2S($1)->size()) {
1.30 paf 436: $$=$1;
1.54 paf 437: O($$, OP_WRITE);
1.30 paf 438: } else {
439: // optimized case of special end of macro. see yylex
440: $$=N(POOL);
441: }
1.59 paf 442: */
1.26 paf 443: };
1.54 paf 444: number: STRING {
445: change_string_literal_to_double_literal($$=$1);
446: };
447:
1.55 paf 448: empty_double_value: /* empty */ { $$=VL(NEW VDouble(POOL)) };
449: empty_string_value: /* empty */ { $$=VL(NEW VString(POOL)) };
1.25 paf 450: empty: /* empty */ { $$=N(POOL) };
1.1 paf 451:
452: %%
453:
454: /*
455: 000$111(2222)00
456: 000$111{3333}00
1.9 paf 457: $,^: push,=0
1.1 paf 458: 1:( { break=pop
459: 2:( ) pop
460: 3:{ } pop
461:
462: 000^111(2222)4444{33333}4000
1.9 paf 463: $,^: push,=0
1.1 paf 464: 1:( { break=pop
465: 2:( )=4
466: 3:{ }=4
467: 4:[^({]=pop
468: */
469:
470: int yylex(YYSTYPE *lvalp, void *pc) {
471: #define lexical_brackets_nestage PC->brackets_nestages[PC->sp]
1.48 paf 472: #define RC {result=c; goto break2; }
1.1 paf 473:
474: register int c;
475: int result;
476:
477: if(PC->pending_state) {
478: result=PC->pending_state;
479: PC->pending_state=0;
480: return result;
481: }
482:
1.9 paf 483: char *begin=PC->source;
484: char *end;
485: int begin_line=PC->line;
1.58 paf 486: bool skip_analized_char=false;
1.50 paf 487: while(true) {
1.9 paf 488: c=*(end=(PC->source++));
1.1 paf 489:
1.4 paf 490: if(c=='\n') {
1.1 paf 491: PC->line++;
1.8 paf 492: PC->col=0;
1.10 paf 493: } else
1.4 paf 494: PC->col++;
1.1 paf 495:
1.48 paf 496: // escaping: ^^ ^$ ^; ^) ^} ^( ^{ ^"
497: if(c=='^')
498: switch(*PC->source) {
499: case '^': case '$': case ';':
500: case '[': case ']':
501: case '{': case '}':
502: case '"':
1.40 paf 503: if(end!=begin) {
504: // append piece till ^
505: PC->string->APPEND(begin, end-begin, PC->file, begin_line);
506: }
507: // reset piece 'start' position & line
508: begin=PC->source; // ^
1.9 paf 509: begin_line=PC->line;
1.40 paf 510: // skip over ^ and _
1.50 paf 511: PC->source++; PC->col++;
1.40 paf 512: // skip analysis = forced literal
1.1 paf 513: continue;
514: }
515: switch(PC->ls) {
1.10 paf 516:
517: // USER'S = NOT OURS
1.1 paf 518: case LS_USER:
1.48 paf 519: switch(c) {
520: case '$':
1.10 paf 521: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 522: RC;
523: case '^':
524: push_LS(PC, LS_METHOD_NAME);
525: RC;
526: case '@':
527: if(PC->col==0+1) {
528: push_LS(PC, LS_DEF_NAME);
529: RC;
530: }
531: break;
1.1 paf 532: }
1.48 paf 533: break;
534:
535: // STRING IN EXPRESSION
536: case LS_EXPRESSION_STRING:
537: switch(c) {
538: case '"':
539: pop_LS(PC); //"abc".
540: RC;
541: case '$':
542: push_LS(PC, LS_VAR_NAME_SIMPLE);
543: RC;
544: case '^':
1.10 paf 545: push_LS(PC, LS_METHOD_NAME);
1.48 paf 546: RC;
1.10 paf 547: }
548: break;
549:
550: // METHOD DEFINITION
551: case LS_DEF_NAME:
1.48 paf 552: switch(c) {
553: case '[':
1.10 paf 554: PC->ls=LS_DEF_PARAMS;
1.48 paf 555: RC;
556: case '\n':
557: PC->ls=LS_DEF_SPECIAL_BODY;
558: RC;
1.10 paf 559: }
560: break;
1.48 paf 561:
1.10 paf 562: case LS_DEF_PARAMS:
1.48 paf 563: switch(c) {
564: case ';':
565: RC;
566: case ']':
1.10 paf 567: PC->ls=*PC->source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 568: RC;
1.49 paf 569: case '\n': // wrong. bailing out
1.10 paf 570: pop_LS(PC);
1.48 paf 571: RC;
1.10 paf 572: }
573: break;
1.48 paf 574:
1.10 paf 575: case LS_DEF_LOCALS:
1.48 paf 576: switch(c) {
577: case '[':
578: case ';':
579: RC;
580: case ']':
1.10 paf 581: PC->ls=LS_DEF_COMMENT;
1.48 paf 582: RC;
583: case '\n': // wrong. bailing out
1.10 paf 584: pop_LS(PC);
1.48 paf 585: RC;
1.10 paf 586: }
587: break;
1.48 paf 588:
1.10 paf 589: case LS_DEF_COMMENT:
590: if(c=='\n') {
591: pop_LS(PC);
1.48 paf 592: RC;
1.37 paf 593: }
594: break;
595:
1.48 paf 596: case LS_DEF_SPECIAL_BODY:
1.37 paf 597: if(c=='\n') {
1.48 paf 598: switch(*PC->source) {
599: case '@': case 0: // end of special_code
1.37 paf 600: pop_LS(PC);
1.48 paf 601: break;
602: }
603: RC;
604: }
605: break;
606:
607: // (EXPRESSION)
608: case LS_EXPRESSION_BODY:
609: switch(c) {
610: case ')':
611: if(--lexical_brackets_nestage==0)
612: pop_LS(PC); //(EXPRESSION).
613: RC;
614: case '$':
615: push_LS(PC, LS_VAR_NAME_IN_EXPRESSION);
616: RC;
617: case '^':
618: push_LS(PC, LS_METHOD_NAME);
619: RC;
620: case '(':
621: lexical_brackets_nestage++;
622: RC;
623: case '+': case '-': case '*': case '/': case '%':
1.58 paf 624: case '~':
1.48 paf 625: case ';':
626: RC;
1.59 paf 627: case '&': case '|': case '#':
1.58 paf 628: if(*PC->source==c) { // && ||
1.59 paf 629: result=c=='#'?LXOR:c=='&'?LAND:LOR;
1.58 paf 630: skip_analized_char=true;
631: } else
632: result=c;
633: goto break2;
634: case '<': case '>': case '=': case '!':
635: if(*PC->source=='=') { // <= >= == !=
636: skip_analized_char=true;
637: switch(c) {
638: case '<': result=NLE; break;
639: case '>': result=NGE; break;
640: case '=': result=NEQ; break;
641: case '!': result=NNE; break;
642: }
643: } else
644: result=c;
645: goto break2;
1.48 paf 646: case '"':
647: push_LS(PC, LS_EXPRESSION_STRING);
648: RC;
1.50 paf 649: case 'l': case 'g': case 'e': case 'n':
1.51 paf 650: if(end==begin) // right after whitespace
1.58 paf 651: switch(*PC->source) {
1.51 paf 652: // case '?': // ok [and bad cases, yacc would bark at them]
653: case 't': // lt gt [et nt]
1.58 paf 654: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
655: goto break2;
1.51 paf 656: case 'e': // le ge ne [ee]
1.58 paf 657: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
658: goto break2;
1.51 paf 659: case 'q': // eq [lq gq nq]
1.58 paf 660: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
661: goto break2;
1.50 paf 662: }
1.48 paf 663: break;
664: case ' ': case '\t': case '\n':
665: if(end!=begin) {
1.58 paf 666: // append piece till whitespace char
1.48 paf 667: PC->string->APPEND(begin, end-begin, PC->file, begin_line);
668: }
669: // reset piece 'start' position & line
1.58 paf 670: begin=PC->source; // after whitespace char
1.48 paf 671: begin_line=PC->line;
672: continue;
1.1 paf 673: }
674: break;
675:
1.10 paf 676: // VARIABLE GET/PUT/WITH
1.1 paf 677: case LS_VAR_NAME_SIMPLE:
1.48 paf 678: case LS_VAR_NAME_IN_EXPRESSION:
679: if(PC->ls==LS_VAR_NAME_IN_EXPRESSION) {
1.56 paf 680: // name in expr ends also before binary operators
1.48 paf 681: switch(c) {
682: case '+': case '-': case '*': case '/': case '%':
683: case '&': case '|':
684: case '<': case '>': case '=': case '!':
685: pop_LS(PC);
686: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
687: result=EON;
688: goto break2;
689: }
690: }
691: switch(c) {
692: case 0:
693: case ' ': case '\t': case '\n':
694: case ';':
695: case ']': case '}':
1.1 paf 696: pop_LS(PC);
1.32 paf 697: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 698: result=EON;
1.1 paf 699: goto break2;
1.48 paf 700: case '[':
701: PC->ls=LS_VAR_SQUARE;
1.1 paf 702: lexical_brackets_nestage=1;
1.48 paf 703: RC;
704: case '{':
705: if(begin==end) { // ${name}, no need of EON, switching LS
706: PC->ls=LS_VAR_NAME_CURLY;
707: } else {
708: PC->ls=LS_VAR_CURLY;
709: lexical_brackets_nestage=1;
710: }
711:
712: RC;
713: case '(':
714: PC->ls=LS_EXPRESSION_BODY;
1.1 paf 715: lexical_brackets_nestage=1;
1.48 paf 716: RC;
717: case '.': // name part delim
718: case '$': // name part subvar
719: case ':': // ':name' or 'class:name'
720: RC;
1.1 paf 721: }
722: break;
1.48 paf 723:
1.1 paf 724: case LS_VAR_NAME_CURLY:
1.48 paf 725: switch(c) {
726: case '}': // ${name} finished, restoring LS
1.1 paf 727: pop_LS(PC);
1.48 paf 728: RC;
729: case '.': // name part delim
730: case '$': // name part subvar
731: case ':': // ':name' or 'class:name'
732: RC;
1.1 paf 733: }
734: break;
1.48 paf 735:
736: case LS_VAR_SQUARE:
737: switch(c) {
738: case '$':
1.10 paf 739: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 740: RC;
741: case '^':
1.10 paf 742: push_LS(PC, LS_METHOD_NAME);
1.48 paf 743: RC;
744: case ']':
1.1 paf 745: if(--lexical_brackets_nestage==0) {
746: pop_LS(PC);
1.48 paf 747: RC;
1.1 paf 748: }
1.48 paf 749: break;
750: case ';': // operator_or_fmt;value delim
751: RC;
752: case '[':
753: lexical_brackets_nestage++;
754: break;
1.1 paf 755: }
756: break;
1.48 paf 757:
1.1 paf 758: case LS_VAR_CURLY:
1.48 paf 759: switch(c) {
760: case '$':
1.10 paf 761: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 762: RC;
763: case '^':
1.10 paf 764: push_LS(PC, LS_METHOD_NAME);
1.48 paf 765: RC;
766: case '}':
1.1 paf 767: if(--lexical_brackets_nestage==0) {
768: pop_LS(PC);
1.48 paf 769: RC;
1.1 paf 770: }
1.48 paf 771: break;
772: case '{':
1.1 paf 773: lexical_brackets_nestage++;
1.48 paf 774: break;
775: }
1.1 paf 776: break;
777:
1.10 paf 778: // METHOD CALL
1.1 paf 779: case LS_METHOD_NAME:
1.48 paf 780: switch(c) {
781: case '[':
782: PC->ls=LS_METHOD_SQUARE;
1.1 paf 783: lexical_brackets_nestage=1;
1.48 paf 784: RC;
785: case '{':
1.1 paf 786: PC->ls=LS_METHOD_CURLY;
787: lexical_brackets_nestage=1;
1.48 paf 788: RC;
789: case '.': // name part delim
790: case '$': // name part subvar
791: case ':': // ':name' or 'class:name'
792: RC;
1.1 paf 793: }
794: break;
1.48 paf 795:
796: case LS_METHOD_SQUARE:
797: switch(c) {
798: case '$':
1.10 paf 799: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 800: RC;
801: case '^':
1.10 paf 802: push_LS(PC, LS_METHOD_NAME);
1.48 paf 803: RC;
804: case ';': // param delim
805: RC;
806: case ']':
1.1 paf 807: if(--lexical_brackets_nestage==0) {
808: PC->ls=LS_METHOD_AFTER;
1.48 paf 809: RC;
1.1 paf 810: }
1.48 paf 811: break;
812: case '[':
1.1 paf 813: lexical_brackets_nestage++;
1.48 paf 814: break;
815: }
1.1 paf 816: break;
1.48 paf 817:
1.1 paf 818: case LS_METHOD_CURLY:
1.48 paf 819: switch(c) {
820: case '$':
1.10 paf 821: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 822: RC;
823: case '^':
1.10 paf 824: push_LS(PC, LS_METHOD_NAME);
1.48 paf 825: RC;
826: case '}':
1.1 paf 827: if(--lexical_brackets_nestage==0) {
828: PC->ls=LS_METHOD_AFTER;
1.48 paf 829: RC;
1.1 paf 830: }
1.48 paf 831: break;
832: case '{':
1.1 paf 833: lexical_brackets_nestage++;
1.48 paf 834: break;
835: }
1.1 paf 836: break;
1.48 paf 837:
1.1 paf 838: case LS_METHOD_AFTER:
1.47 paf 839: if(c=='[') {/* )( }( */
1.48 paf 840: PC->ls=LS_METHOD_SQUARE;
1.1 paf 841: lexical_brackets_nestage=1;
1.48 paf 842: RC;
1.1 paf 843: }
844: if(c=='{') {/* ){ }{ */
845: PC->ls=LS_METHOD_CURLY;
846: lexical_brackets_nestage=1;
1.48 paf 847: RC;
1.1 paf 848: }
849: pop_LS(PC);
1.32 paf 850: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 851: result=EON;
1.1 paf 852: goto break2;
853: }
1.9 paf 854: if(c==0) {
1.1 paf 855: result=-1;
856: break;
857: }
858: }
859:
860: break2:
1.59 paf 861: if(end!=begin) { // there is last piece?
862: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
863: // strip last \n
1.10 paf 864: end--;
1.59 paf 865: }
866: if(end!=begin) { // last piece still alive?
867: // append it
1.30 paf 868: PC->string->APPEND(begin, end-begin, PC->file, begin_line/*, start_col*/);
869: }
1.59 paf 870: }
871: if(PC->string->size()) { // something accumulated?
1.17 paf 872: // create STRING value: array of OP_VALUE+vstring
1.55 paf 873: *lvalp=VL(NEW VString(*PC->string));
1.10 paf 874: // new pieces storage
1.25 paf 875: PC->string=NEW String(POOL);
1.58 paf 876: // make current result be pending for next call, return STRING for now
877: PC->pending_state=result; result=STRING;
878: }
879: if(skip_analized_char) {
880: PC->source++; PC->col++;
1.1 paf 881: }
1.58 paf 882: return result;
1.1 paf 883: }
884:
1.9 paf 885: int real_yyerror(parse_control *pc, char *s) /* Called by yyparse on error */
1.1 paf 886: {
1.16 paf 887: //fprintf(stderr, "[%s]\n", s);
1.6 paf 888:
1.46 paf 889: strncpy(pc->error, s, MAX_STRING); // TODO: перепроверить с треклятым последним байтом
1.1 paf 890: return 1;
891: }
892:
893: static void
1.9 paf 894: yyprint(
1.1 paf 895: FILE *file,
896: int type,
897: YYSTYPE value)
898: {
1.9 paf 899: if(type==STRING)
1.38 paf 900: fprintf(file, " \"%s\"", SLA2S(value)->cstr());
1.1 paf 901: }
902:
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