Annotation of parser3/src/main/compile.y, revision 1.64
1.24 paf 1: /*
1.64 ! paf 2: $Id: compile.y,v 1.63 2001/03/07 10:10:50 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 */
1.61 paf 64: %left "lt" "gt" "le" "ge"
65: %left "eq" "ne"
1.59 paf 66: %left '<' '>' "<=" ">=" "##"
1.57 paf 67: %left "==" "!="
68: %left "||"
69: %left "&&"
70: %left NOT /* not: unary ! */
71:
72: /* bitwise */
1.59 paf 73: %left '#'
1.57 paf 74: %left '&' '|'
75: %left INV /* invertion: unary ~ */
76:
1.56 paf 77: /* numerical */
1.55 paf 78: %left '-' '+'
1.57 paf 79: %left '*' '/' '%'
1.56 paf 80: %left NEG /* negation: unary - */
1.1 paf 81:
82: %%
83:
1.10 paf 84: all:
85: one_big_piece {
1.25 paf 86: String& name_main=*NEW String(POOL);
1.11 paf 87: name_main.APPEND_CONST(MAIN_METHOD_NAME);
1.25 paf 88: Array& param_names=*NEW Array(POOL);
89: Array& local_names=*NEW Array(POOL);
1.34 paf 90: Method& method=*NEW Method(POOL, name_main, param_names, local_names, *$1);
91: PC->vclass->add_method(name_main, method);
1.10 paf 92: }
93: | methods;
94:
95: methods: method | methods method;
96: one_big_piece: maybe_codes;
97:
1.34 paf 98: method: control_method | code_method;
99:
100: control_method: '@' STRING '\n'
101: control_strings {
1.38 paf 102: String& name=*SLA2S($2);
1.34 paf 103: YYSTYPE strings_code=$4;
1.37 paf 104: if(strings_code->size()<1*2) {
105: strcpy(PC->error, "@");
106: strcat(PC->error, name.cstr());
107: strcat(PC->error, " is empty");
108: YYERROR;
109: }
1.36 paf 110: if(name==CLASS_NAME) {
1.34 paf 111: if(strings_code->size()==1*2)
1.38 paf 112: PC->vclass->set_name(*SLA2S(strings_code));
1.34 paf 113: else {
114: strcpy(PC->error, "@"CLASS_NAME" must contain sole name");
115: YYERROR;
116: }
117: } else {
1.36 paf 118: if(name==USES_NAME) {
1.34 paf 119: for(int i=0; i<strings_code->size(); i+=2) {
1.38 paf 120: String *file=SLA2S(strings_code, i);
1.35 paf 121: file->APPEND_CONST(".p");
122: PC->request->use(file->cstr(), 0);
1.34 paf 123: }
1.45 paf 124: } else if(name==BASE_NAME) {
125: if(strings_code->size()==1*2) {
126: String& base_name=*SLA2S(strings_code);
127: VClass *base=static_cast<VClass *>(
128: PC->request->classes().get(base_name));
129: if(!base) {
130: strcpy(PC->error, base_name.cstr());
131: strcat(PC->error, ": undefined class in @"BASE_NAME);
1.34 paf 132: YYERROR;
133: }
1.45 paf 134: PC->vclass->set_base(*base);
135: } else {
136: strcpy(PC->error, "@"BASE_NAME" must contain sole name");
137: YYERROR;
1.34 paf 138: }
139: } else {
1.36 paf 140: strcpy(PC->error, name.cstr());
1.34 paf 141: strcat(PC->error, ": invalid special name. valid names are "
1.45 paf 142: CLASS_NAME", "USES_NAME" and "BASE_NAME);
1.34 paf 143: YYERROR;
144: }
145: }
146: };
1.37 paf 147: control_strings: control_string | control_strings control_string { $$=$1; P($$, $2) };
148: control_string: maybe_string '\n';
149: maybe_string: empty | STRING;
1.34 paf 150:
151: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n'
1.10 paf 152: maybe_codes {
1.38 paf 153: const String *name=SLA2S($2);
1.10 paf 154:
155: YYSTYPE params_names_code=$3;
1.25 paf 156: Array& params_names=*NEW Array(POOL);
1.10 paf 157: for(int i=0; i<params_names_code->size(); i+=2)
1.38 paf 158: params_names+=SLA2S(params_names_code, i);
1.10 paf 159:
160: YYSTYPE locals_names_code=$4;
1.25 paf 161: Array& locals_names=*NEW Array(POOL);
1.10 paf 162: for(int i=0; i<locals_names_code->size(); i+=2)
1.38 paf 163: locals_names+=SLA2S(locals_names_code, i);
1.10 paf 164:
1.34 paf 165: Method& method=*NEW Method(POOL, *name, params_names, locals_names, *$7);
166: PC->vclass->add_method(*name, method);
1.8 paf 167: };
1.10 paf 168:
169: maybe_bracketed_strings: empty | bracketed_maybe_strings;
170: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
171: maybe_strings: empty | strings;
172: strings: STRING | strings ';' STRING { $$=$1; P($$, $3) };
173:
174: maybe_comment: empty | STRING;
1.1 paf 175:
176: /* codes */
177:
1.10 paf 178: maybe_codes: empty | codes;
179:
1.1 paf 180: codes: code | codes code {
181: $$=$1;
1.9 paf 182: P($$, $2);
1.1 paf 183: };
184: code: write_str_literal | action;
185: action: get | put | with | call;
186:
187: /* get */
188:
1.64 ! paf 189: get: get_value {
! 190: $$=$1; /* stack: resulting value */
1.54 paf 191: O($$, OP_WRITE); /* value=pop; write(value) */
1.1 paf 192: };
1.64 ! paf 193: get_value: '$' get_name_value { $$=$2 }
! 194: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 195: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 196: name_without_curly_rdive:
197: name_without_curly_rdive_read
198: | name_without_curly_rdive_root
199: | name_without_curly_rdive_class;
1.19 paf 200: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.25 paf 201: $$=N(POOL);
1.22 paf 202: Array *diving_code=$1;
1.38 paf 203: String *first_name=SLA2S(diving_code);
1.23 paf 204: if(first_name && *first_name==SELF_NAME) {
1.54 paf 205: O($$, OP_WITH_SELF); /* stack: starting context */
1.22 paf 206: P($$, diving_code,
207: /* skip over... */
208: diving_code->size()>2?3/*OP_+string+get_element*/:2/*OP_+string*/);
209: } else {
1.54 paf 210: O($$, OP_WITH_READ); /* stack: starting context */
1.22 paf 211: P($$, diving_code);
212: }
213: /* diving code; stack: current context */
1.1 paf 214: };
1.19 paf 215: name_without_curly_rdive_root: ':' name_without_curly_rdive_code {
1.25 paf 216: $$=N(POOL);
1.54 paf 217: O($$, OP_WITH_ROOT); /* stack: starting context */
1.19 paf 218: P($$, $2); /* diving code; stack: current context */
219: };
1.44 paf 220: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P($$, $2) };
1.19 paf 221: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P($$, $2) };
1.1 paf 222:
223: /* put */
224:
1.52 paf 225: put: '$' name_expr_wdive constructor_value {
1.20 paf 226: $$=$2; /* stack: context,name */
1.52 paf 227: P($$, $3); /* stack: context,name,constructor_value */
1.54 paf 228: O($$, OP_CONSTRUCT); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.20 paf 229: };
1.44 paf 230: name_expr_wdive:
231: name_expr_wdive_write
232: | name_expr_wdive_root
233: | name_expr_wdive_class;
1.28 paf 234: name_expr_wdive_write: name_expr_dive_code {
1.44 paf 235: $$=N(POOL);
1.23 paf 236: Array *diving_code=$1;
1.38 paf 237: String *first_name=SLA2S(diving_code);
1.23 paf 238: if(first_name && *first_name==SELF_NAME) {
1.54 paf 239: O($$, OP_WITH_SELF); /* stack: starting context */
1.23 paf 240: P($$, diving_code,
241: /* skip over... */
242: diving_code->size()>2?3/*OP_+string+get_element*/:2/*OP_+string*/);
243: } else {
1.54 paf 244: O($$, OP_WITH_WRITE); /* stack: starting context */
1.23 paf 245: P($$, diving_code);
246: }
247: /* diving code; stack: current context */
1.20 paf 248: };
1.28 paf 249: name_expr_wdive_root: ':' name_expr_dive_code {
1.25 paf 250: $$=N(POOL);
1.54 paf 251: O($$, OP_WITH_ROOT); /* stack: starting context */
1.9 paf 252: P($$, $2); /* diving code; stack: context,name */
1.1 paf 253: };
1.44 paf 254: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P($$, $2) };
1.20 paf 255:
1.1 paf 256: constructor_value:
1.55 paf 257: '[' any_constructor_code_value ']' { $$=$2 }
1.56 paf 258: | '(' any_expr ')' { $$=$2 }
1.52 paf 259: ;
1.55 paf 260: any_constructor_code_value:
261: empty_string_value /* optimized $var[] case */
1.52 paf 262: | STRING /* optimized $var[STRING] case */
1.55 paf 263: | constructor_code_value /* $var[something complex] */
1.1 paf 264: ;
1.55 paf 265: constructor_code_value: constructor_code {
1.25 paf 266: $$=N(POOL);
1.54 paf 267: O($$, OP_CREATE_EWPOOL); /* stack: empty write context */
1.9 paf 268: P($$, $1); /* some codes to that context */
1.54 paf 269: O($$, OP_REDUCE_EWPOOL); /* context=pop; stack: context.value() */
1.1 paf 270: };
1.55 paf 271: constructor_code: codes__excluding_sole_str_literal;
1.27 paf 272: codes__excluding_sole_str_literal: action | code codes { $$=$1; P($$, $2) };
273:
1.1 paf 274: /* call */
275:
1.38 paf 276: call: '^' call_name store_params EON { /* ^field.$method{vasya} */
1.42 paf 277: $$=$2; /* with_xxx,diving code; stack: context,method_junction */
1.54 paf 278: O($$, OP_GET_METHOD_FRAME); /* stack: context,method_frame */
1.9 paf 279: P($$, $3); /* filling method_frame.store_params */
1.54 paf 280: O($$, OP_CALL); /* method_frame=pop; ncontext=pop; call(ncontext,method_frame) */
1.1 paf 281: };
282:
1.43 paf 283: call_name: name_without_curly_rdive;
1.38 paf 284:
1.9 paf 285: store_params: store_param | store_params store_param { $$=$1; P($$, $2) };
1.1 paf 286: store_param: store_round_param | store_curly_param;
1.47 paf 287: store_round_param: '[' store_param_parts ']' {$$=$2};
1.31 paf 288: store_param_parts:
1.32 paf 289: store_param_part
290: | store_param_parts ';' store_param_part { $$=$1; P($$, $3) }
1.31 paf 291: ;
1.10 paf 292: store_curly_param: '{' maybe_codes '}' {
1.25 paf 293: $$=N(POOL);
1.29 paf 294: PCA($$, $2);
1.54 paf 295: O($$, OP_STORE_PARAM);
1.1 paf 296: };
1.32 paf 297: store_param_part:
1.33 paf 298: empty /* optimized () case */
299: | STRING { /* optimized (STRING) case */
1.32 paf 300: $$=$1;
1.54 paf 301: O($$, OP_STORE_PARAM);
1.32 paf 302: }
1.55 paf 303: | constructor_code_value { /* (something complex) */
1.32 paf 304: $$=$1;
1.54 paf 305: O($$, OP_STORE_PARAM);
1.32 paf 306: }
307: ;
1.1 paf 308:
309: /* name */
310:
1.20 paf 311: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P($$, $2) };
1.1 paf 312:
1.9 paf 313: name_path: name_step | name_path name_step { $$=$1; P($$, $2) };
1.1 paf 314: name_step: name_advance1 '.';
315: name_advance1: name_expr_value {
316: /* stack: context */
317: $$=$1; /* stack: context,name */
1.54 paf 318: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 319: };
320: name_advance2: name_expr_value {
321: /* stack: context */
322: $$=$1; /* stack: context,name */
1.54 paf 323: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 324: }
1.4 paf 325: | STRING BOGUS
1.1 paf 326: ;
327: name_expr_value:
1.4 paf 328: STRING /* subname_is_const */
1.1 paf 329: | name_expr_subvar_value /* $subname_is_var_value */
330: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value[$...] */
331: ;
332: name_expr_subvar_value: '$' subvar_ref_name_rdive {
333: $$=$2;
1.54 paf 334: O($$, OP_GET_ELEMENT);
1.1 paf 335: };
1.4 paf 336: name_expr_with_subvar_value: STRING subvar_get_writes {
1.25 paf 337: $$=N(POOL);
1.54 paf 338: O($$, OP_CREATE_EWPOOL);
1.9 paf 339: P($$, $1);
1.54 paf 340: O($$, OP_WRITE);
1.9 paf 341: P($$, $2);
1.54 paf 342: O($$, OP_REDUCE_EWPOOL);
1.1 paf 343: };
1.18 paf 344: subvar_ref_name_rdive: subvar_ref_name_rdive_read | subvar_ref_name_rdive_root;
345: subvar_ref_name_rdive_read: STRING {
1.25 paf 346: $$=N(POOL);
1.54 paf 347: O($$, OP_WITH_READ);
1.9 paf 348: P($$, $1);
1.1 paf 349: };
1.18 paf 350: subvar_ref_name_rdive_root: ':' STRING {
1.25 paf 351: $$=N(POOL);
1.54 paf 352: O($$, OP_WITH_ROOT);
1.18 paf 353: P($$, $2);
354: };
1.9 paf 355: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P($$, $2) };
1.1 paf 356: subvar__get_write: '$' subvar_ref_name_rdive {
357: $$=$2;
1.54 paf 358: O($$, OP_GET_ELEMENT__WRITE);
1.42 paf 359: };
360:
1.44 paf 361: class_prefix: STRING ':' {
1.42 paf 362: String& name=*SLA2S($1);
363: VClass *vclass=static_cast<VClass *>(PC->request->classes().get(name));
364: if(!vclass) {
365: strcpy(PC->error, "'");
366: strcat(PC->error, name.cstr());
367: strcat(PC->error, "' class is undefined in call");
368: YYERROR;
369: }
1.48 paf 370: //TODO: убрать зависимость от статических @USE, сделать имя, а не ссылку
1.42 paf 371: $$=CL(vclass); // vclass
1.1 paf 372: };
373:
374:
375: /* with */
376:
377: with: '$' name_without_curly_rdive '{' codes '}' {
378: $$=$2;
1.54 paf 379: O($$, OP_CREATE_RWPOOL);
1.9 paf 380: P($$, $4);
1.54 paf 381: O($$, OP_REDUCE_RWPOOL);
382: O($$, OP_WRITE);
1.1 paf 383: };
1.53 paf 384:
1.56 paf 385: /* expr */
1.53 paf 386:
1.56 paf 387: any_expr:
1.55 paf 388: empty_double_value /* optimized $var() case */
1.62 paf 389: | optimized_expr /* $var(something) */
1.53 paf 390: ;
1.62 paf 391: optimized_expr: expr {
392: if(($$=$1)->size()==2) { // only one string literal in there?
393: change_string_literal_to_double_literal($$); // make that string literal Double
394: }
395: };
1.56 paf 396: expr:
1.62 paf 397: STRING
1.64 ! paf 398: | get_value
! 399: | '"' string_inside_quotes_value '"' { $$ = $2; }
1.60 paf 400: | '(' expr ')' { $$ = $2; }
401: /* stack: operand // stack: @operand */
402: | '-' expr %prec NEG { $$=$2; O($$, OP_NEG) }
403: | '~' expr %prec INV { $$=$2; O($$, OP_INV) }
404: | '!' expr %prec NOT { $$=$2; O($$, OP_NOT) }
1.57 paf 405: /*todo: def in fexists*/
1.60 paf 406: /* stack: a,b // stack: a@b */
407: | expr '-' expr { $$=$1; P($$, $3); O($$, OP_SUB) }
408: | expr '+' expr { $$=$1; P($$, $3); O($$, OP_ADD) }
409: | expr '*' expr { $$=$1; P($$, $3); O($$, OP_MUL) }
410: | expr '/' expr { $$=$1; P($$, $3); O($$, OP_DIV) }
411: | expr '%' expr { $$=$1; P($$, $3); O($$, OP_MOD) }
412: | expr '&' expr { $$=$1; P($$, $3); O($$, OP_BIN_AND) }
413: | expr '|' expr { $$=$1; P($$, $3); O($$, OP_BIN_OR) }
414: | expr '#' expr { $$=$1; P($$, $3); O($$, OP_BIN_XOR) }
415: | expr "&&" expr { $$=$1; P($$, $3); O($$, OP_LOG_AND) }
416: | expr "||" expr { $$=$1; P($$, $3); O($$, OP_LOG_OR) }
417: | expr "##" expr { $$=$1; P($$, $3); O($$, OP_LOG_XOR) }
418: | expr '<' expr { $$=$1; P($$, $3); O($$, OP_NUM_LT) }
419: | expr '>' expr { $$=$1; P($$, $3); O($$, OP_NUM_GT) }
420: | expr "<=" expr { $$=$1; P($$, $3); O($$, OP_NUM_LE) }
421: | expr ">=" expr { $$=$1; P($$, $3); O($$, OP_NUM_GE) }
422: | expr "==" expr { $$=$1; P($$, $3); O($$, OP_NUM_EQ) }
423: | expr "!=" expr { $$=$1; P($$, $3); O($$, OP_NUM_NE) }
1.61 paf 424: | expr "lt" expr { $$=$1; P($$, $3); O($$, OP_STR_LT) }
425: | expr "gt" expr { $$=$1; P($$, $3); O($$, OP_STR_GT) }
426: | expr "le" expr { $$=$1; P($$, $3); O($$, OP_STR_LE) }
427: | expr "ge" expr { $$=$1; P($$, $3); O($$, OP_STR_GE) }
428: | expr "eq" expr { $$=$1; P($$, $3); O($$, OP_STR_EQ) }
429: | expr "ne" expr { $$=$1; P($$, $3); O($$, OP_STR_NE) }
1.56 paf 430: ;
1.55 paf 431:
1.64 ! paf 432: string_inside_quotes_value: maybe_codes/*string_inside_quotes*/ {
! 433: $$=N(POOL);
! 434: O($$, OP_CREATE_SWPOOL); /* stack: empty write context */
! 435: P($$, $1); /* some codes to that context */
! 436: O($$, OP_REDUCE_SWPOOL); /* context=pop; stack: context.get_string() */
1.53 paf 437: };
1.64 ! paf 438: /*string_inside_quotes:
! 439: string_inside_quotes_part
! 440: | string_inside_quotes string_inside_quotes_part {
! 441: $$=$1; P($$, $2)
! 442: }
! 443: ;
! 444: string_inside_quotes_part: STRING | get_value;
1.53 paf 445: */
1.1 paf 446:
1.27 paf 447: /* basics */
1.1 paf 448:
1.4 paf 449: write_str_literal: STRING {
1.59 paf 450: $$=$1;
451: O($$, OP_WRITE);
1.54 paf 452: };
453:
1.55 paf 454: empty_double_value: /* empty */ { $$=VL(NEW VDouble(POOL)) };
455: empty_string_value: /* empty */ { $$=VL(NEW VString(POOL)) };
1.25 paf 456: empty: /* empty */ { $$=N(POOL) };
1.1 paf 457:
458: %%
459:
460: /*
461: 000$111(2222)00
462: 000$111{3333}00
1.9 paf 463: $,^: push,=0
1.1 paf 464: 1:( { break=pop
465: 2:( ) pop
466: 3:{ } pop
467:
468: 000^111(2222)4444{33333}4000
1.9 paf 469: $,^: push,=0
1.1 paf 470: 1:( { break=pop
471: 2:( )=4
472: 3:{ }=4
473: 4:[^({]=pop
474: */
475:
476: int yylex(YYSTYPE *lvalp, void *pc) {
477: #define lexical_brackets_nestage PC->brackets_nestages[PC->sp]
1.48 paf 478: #define RC {result=c; goto break2; }
1.1 paf 479:
480: register int c;
481: int result;
482:
483: if(PC->pending_state) {
484: result=PC->pending_state;
485: PC->pending_state=0;
486: return result;
487: }
488:
1.9 paf 489: char *begin=PC->source;
490: char *end;
491: int begin_line=PC->line;
1.58 paf 492: bool skip_analized_char=false;
1.50 paf 493: while(true) {
1.9 paf 494: c=*(end=(PC->source++));
1.1 paf 495:
1.4 paf 496: if(c=='\n') {
1.1 paf 497: PC->line++;
1.8 paf 498: PC->col=0;
1.10 paf 499: } else
1.4 paf 500: PC->col++;
1.1 paf 501:
1.48 paf 502: // escaping: ^^ ^$ ^; ^) ^} ^( ^{ ^"
503: if(c=='^')
504: switch(*PC->source) {
505: case '^': case '$': case ';':
506: case '[': case ']':
507: case '{': case '}':
508: case '"':
1.40 paf 509: if(end!=begin) {
510: // append piece till ^
511: PC->string->APPEND(begin, end-begin, PC->file, begin_line);
512: }
1.63 paf 513: // reset piece 'begin' position & line
1.40 paf 514: begin=PC->source; // ^
1.9 paf 515: begin_line=PC->line;
1.40 paf 516: // skip over ^ and _
1.50 paf 517: PC->source++; PC->col++;
1.40 paf 518: // skip analysis = forced literal
1.1 paf 519: continue;
520: }
521: switch(PC->ls) {
1.10 paf 522:
523: // USER'S = NOT OURS
1.1 paf 524: case LS_USER:
1.48 paf 525: switch(c) {
526: case '$':
1.10 paf 527: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 528: RC;
529: case '^':
530: push_LS(PC, LS_METHOD_NAME);
531: RC;
532: case '@':
533: if(PC->col==0+1) {
534: push_LS(PC, LS_DEF_NAME);
535: RC;
536: }
537: break;
1.1 paf 538: }
1.48 paf 539: break;
540:
541: // STRING IN EXPRESSION
542: case LS_EXPRESSION_STRING:
543: switch(c) {
544: case '"':
545: pop_LS(PC); //"abc".
546: RC;
547: case '$':
548: push_LS(PC, LS_VAR_NAME_SIMPLE);
549: RC;
550: case '^':
1.10 paf 551: push_LS(PC, LS_METHOD_NAME);
1.48 paf 552: RC;
1.10 paf 553: }
554: break;
555:
556: // METHOD DEFINITION
557: case LS_DEF_NAME:
1.48 paf 558: switch(c) {
559: case '[':
1.10 paf 560: PC->ls=LS_DEF_PARAMS;
1.48 paf 561: RC;
562: case '\n':
563: PC->ls=LS_DEF_SPECIAL_BODY;
564: RC;
1.10 paf 565: }
566: break;
1.48 paf 567:
1.10 paf 568: case LS_DEF_PARAMS:
1.48 paf 569: switch(c) {
570: case ';':
571: RC;
572: case ']':
1.10 paf 573: PC->ls=*PC->source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 574: RC;
1.49 paf 575: case '\n': // wrong. bailing out
1.10 paf 576: pop_LS(PC);
1.48 paf 577: RC;
1.10 paf 578: }
579: break;
1.48 paf 580:
1.10 paf 581: case LS_DEF_LOCALS:
1.48 paf 582: switch(c) {
583: case '[':
584: case ';':
585: RC;
586: case ']':
1.10 paf 587: PC->ls=LS_DEF_COMMENT;
1.48 paf 588: RC;
589: case '\n': // wrong. bailing out
1.10 paf 590: pop_LS(PC);
1.48 paf 591: RC;
1.10 paf 592: }
593: break;
1.48 paf 594:
1.10 paf 595: case LS_DEF_COMMENT:
596: if(c=='\n') {
597: pop_LS(PC);
1.48 paf 598: RC;
1.37 paf 599: }
600: break;
601:
1.48 paf 602: case LS_DEF_SPECIAL_BODY:
1.37 paf 603: if(c=='\n') {
1.48 paf 604: switch(*PC->source) {
605: case '@': case 0: // end of special_code
1.37 paf 606: pop_LS(PC);
1.48 paf 607: break;
608: }
609: RC;
610: }
611: break;
612:
613: // (EXPRESSION)
614: case LS_EXPRESSION_BODY:
615: switch(c) {
616: case ')':
617: if(--lexical_brackets_nestage==0)
618: pop_LS(PC); //(EXPRESSION).
619: RC;
620: case '$':
621: push_LS(PC, LS_VAR_NAME_IN_EXPRESSION);
622: RC;
623: case '^':
624: push_LS(PC, LS_METHOD_NAME);
625: RC;
626: case '(':
627: lexical_brackets_nestage++;
628: RC;
629: case '+': case '-': case '*': case '/': case '%':
1.58 paf 630: case '~':
1.48 paf 631: case ';':
632: RC;
1.59 paf 633: case '&': case '|': case '#':
1.58 paf 634: if(*PC->source==c) { // && ||
1.59 paf 635: result=c=='#'?LXOR:c=='&'?LAND:LOR;
1.58 paf 636: skip_analized_char=true;
637: } else
638: result=c;
639: goto break2;
640: case '<': case '>': case '=': case '!':
641: if(*PC->source=='=') { // <= >= == !=
642: skip_analized_char=true;
643: switch(c) {
644: case '<': result=NLE; break;
645: case '>': result=NGE; break;
646: case '=': result=NEQ; break;
647: case '!': result=NNE; break;
648: }
649: } else
650: result=c;
651: goto break2;
1.48 paf 652: case '"':
653: push_LS(PC, LS_EXPRESSION_STRING);
654: RC;
1.50 paf 655: case 'l': case 'g': case 'e': case 'n':
1.51 paf 656: if(end==begin) // right after whitespace
1.58 paf 657: switch(*PC->source) {
1.51 paf 658: // case '?': // ok [and bad cases, yacc would bark at them]
659: case 't': // lt gt [et nt]
1.62 paf 660: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
661: skip_analized_char=true;
1.58 paf 662: goto break2;
1.51 paf 663: case 'e': // le ge ne [ee]
1.58 paf 664: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1.62 paf 665: skip_analized_char=true;
1.58 paf 666: goto break2;
1.51 paf 667: case 'q': // eq [lq gq nq]
1.58 paf 668: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1.62 paf 669: skip_analized_char=true;
1.58 paf 670: goto break2;
1.50 paf 671: }
1.48 paf 672: break;
673: case ' ': case '\t': case '\n':
1.63 paf 674: if(end!=begin) { // there were a string after previous operator?
675: result=0; // return that string
676: goto break2;
1.48 paf 677: }
1.63 paf 678: // that's a leading|traling space or after-operator-space
679: // ignoring it
680: // reset piece 'begin' position & line
1.58 paf 681: begin=PC->source; // after whitespace char
1.48 paf 682: begin_line=PC->line;
683: continue;
1.1 paf 684: }
685: break;
686:
1.10 paf 687: // VARIABLE GET/PUT/WITH
1.1 paf 688: case LS_VAR_NAME_SIMPLE:
1.48 paf 689: case LS_VAR_NAME_IN_EXPRESSION:
690: if(PC->ls==LS_VAR_NAME_IN_EXPRESSION) {
1.56 paf 691: // name in expr ends also before binary operators
1.48 paf 692: switch(c) {
693: case '+': case '-': case '*': case '/': case '%':
694: case '&': case '|':
695: case '<': case '>': case '=': case '!':
696: pop_LS(PC);
697: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
698: result=EON;
699: goto break2;
700: }
701: }
702: switch(c) {
703: case 0:
704: case ' ': case '\t': case '\n':
705: case ';':
1.64 ! paf 706: case ']': case '}': case ')': case '"':
1.1 paf 707: pop_LS(PC);
1.32 paf 708: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 709: result=EON;
1.1 paf 710: goto break2;
1.48 paf 711: case '[':
712: PC->ls=LS_VAR_SQUARE;
1.1 paf 713: lexical_brackets_nestage=1;
1.48 paf 714: RC;
715: case '{':
716: if(begin==end) { // ${name}, no need of EON, switching LS
717: PC->ls=LS_VAR_NAME_CURLY;
718: } else {
719: PC->ls=LS_VAR_CURLY;
720: lexical_brackets_nestage=1;
721: }
722:
723: RC;
724: case '(':
725: PC->ls=LS_EXPRESSION_BODY;
1.1 paf 726: lexical_brackets_nestage=1;
1.48 paf 727: RC;
728: case '.': // name part delim
729: case '$': // name part subvar
730: case ':': // ':name' or 'class:name'
731: RC;
1.1 paf 732: }
733: break;
1.48 paf 734:
1.1 paf 735: case LS_VAR_NAME_CURLY:
1.48 paf 736: switch(c) {
737: case '}': // ${name} finished, restoring LS
1.1 paf 738: pop_LS(PC);
1.48 paf 739: RC;
740: case '.': // name part delim
741: case '$': // name part subvar
742: case ':': // ':name' or 'class:name'
743: RC;
1.1 paf 744: }
745: break;
1.48 paf 746:
747: case LS_VAR_SQUARE:
748: switch(c) {
749: case '$':
1.10 paf 750: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 751: RC;
752: case '^':
1.10 paf 753: push_LS(PC, LS_METHOD_NAME);
1.48 paf 754: RC;
755: case ']':
1.1 paf 756: if(--lexical_brackets_nestage==0) {
757: pop_LS(PC);
1.48 paf 758: RC;
1.1 paf 759: }
1.48 paf 760: break;
761: case ';': // operator_or_fmt;value delim
762: RC;
763: case '[':
764: lexical_brackets_nestage++;
765: break;
1.1 paf 766: }
767: break;
1.48 paf 768:
1.1 paf 769: case LS_VAR_CURLY:
1.48 paf 770: switch(c) {
771: case '$':
1.10 paf 772: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 773: RC;
774: case '^':
1.10 paf 775: push_LS(PC, LS_METHOD_NAME);
1.48 paf 776: RC;
777: case '}':
1.1 paf 778: if(--lexical_brackets_nestage==0) {
779: pop_LS(PC);
1.48 paf 780: RC;
1.1 paf 781: }
1.48 paf 782: break;
783: case '{':
1.1 paf 784: lexical_brackets_nestage++;
1.48 paf 785: break;
786: }
1.1 paf 787: break;
788:
1.10 paf 789: // METHOD CALL
1.1 paf 790: case LS_METHOD_NAME:
1.48 paf 791: switch(c) {
792: case '[':
793: PC->ls=LS_METHOD_SQUARE;
1.1 paf 794: lexical_brackets_nestage=1;
1.48 paf 795: RC;
796: case '{':
1.1 paf 797: PC->ls=LS_METHOD_CURLY;
798: lexical_brackets_nestage=1;
1.48 paf 799: RC;
800: case '.': // name part delim
801: case '$': // name part subvar
802: case ':': // ':name' or 'class:name'
803: RC;
1.1 paf 804: }
805: break;
1.48 paf 806:
807: case LS_METHOD_SQUARE:
808: switch(c) {
809: case '$':
1.10 paf 810: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 811: RC;
812: case '^':
1.10 paf 813: push_LS(PC, LS_METHOD_NAME);
1.48 paf 814: RC;
815: case ';': // param delim
816: RC;
817: case ']':
1.1 paf 818: if(--lexical_brackets_nestage==0) {
819: PC->ls=LS_METHOD_AFTER;
1.48 paf 820: RC;
1.1 paf 821: }
1.48 paf 822: break;
823: case '[':
1.1 paf 824: lexical_brackets_nestage++;
1.48 paf 825: break;
826: }
1.1 paf 827: break;
1.48 paf 828:
1.1 paf 829: case LS_METHOD_CURLY:
1.48 paf 830: switch(c) {
831: case '$':
1.10 paf 832: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 833: RC;
834: case '^':
1.10 paf 835: push_LS(PC, LS_METHOD_NAME);
1.48 paf 836: RC;
837: case '}':
1.1 paf 838: if(--lexical_brackets_nestage==0) {
839: PC->ls=LS_METHOD_AFTER;
1.48 paf 840: RC;
1.1 paf 841: }
1.48 paf 842: break;
843: case '{':
1.1 paf 844: lexical_brackets_nestage++;
1.48 paf 845: break;
846: }
1.1 paf 847: break;
1.48 paf 848:
1.1 paf 849: case LS_METHOD_AFTER:
1.47 paf 850: if(c=='[') {/* )( }( */
1.48 paf 851: PC->ls=LS_METHOD_SQUARE;
1.1 paf 852: lexical_brackets_nestage=1;
1.48 paf 853: RC;
1.1 paf 854: }
855: if(c=='{') {/* ){ }{ */
856: PC->ls=LS_METHOD_CURLY;
857: lexical_brackets_nestage=1;
1.48 paf 858: RC;
1.1 paf 859: }
860: pop_LS(PC);
1.32 paf 861: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 862: result=EON;
1.1 paf 863: goto break2;
864: }
1.9 paf 865: if(c==0) {
1.1 paf 866: result=-1;
867: break;
868: }
869: }
870:
871: break2:
1.59 paf 872: if(end!=begin) { // there is last piece?
873: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
874: // strip last \n
1.10 paf 875: end--;
1.59 paf 876: }
877: if(end!=begin) { // last piece still alive?
878: // append it
1.30 paf 879: PC->string->APPEND(begin, end-begin, PC->file, begin_line/*, start_col*/);
880: }
1.59 paf 881: }
882: if(PC->string->size()) { // something accumulated?
1.17 paf 883: // create STRING value: array of OP_VALUE+vstring
1.55 paf 884: *lvalp=VL(NEW VString(*PC->string));
1.10 paf 885: // new pieces storage
1.25 paf 886: PC->string=NEW String(POOL);
1.58 paf 887: // make current result be pending for next call, return STRING for now
888: PC->pending_state=result; result=STRING;
889: }
890: if(skip_analized_char) {
891: PC->source++; PC->col++;
1.1 paf 892: }
1.58 paf 893: return result;
1.1 paf 894: }
895:
1.9 paf 896: int real_yyerror(parse_control *pc, char *s) /* Called by yyparse on error */
1.1 paf 897: {
1.16 paf 898: //fprintf(stderr, "[%s]\n", s);
1.6 paf 899:
1.46 paf 900: strncpy(pc->error, s, MAX_STRING); // TODO: перепроверить с треклятым последним байтом
1.1 paf 901: return 1;
902: }
903:
904: static void
1.9 paf 905: yyprint(
1.1 paf 906: FILE *file,
907: int type,
908: YYSTYPE value)
909: {
1.9 paf 910: if(type==STRING)
1.38 paf 911: fprintf(file, " \"%s\"", SLA2S(value)->cstr());
1.1 paf 912: }
913:
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