Annotation of parser3/src/main/compile.y, revision 1.66
1.24 paf 1: /*
1.66 ! paf 2: $Id: compile.y,v 1.65 2001/03/07 10:35:41 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 */
1.66 ! paf 191: O($$, OP_WRITE); /* value=pop; wcontext.write(value) */
1.1 paf 192: };
1.64 paf 193: get_value: '$' get_name_value { $$=$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:
1.66 ! paf 276: call: call_value {
! 277: $$=$1; /* stack: value */
! 278: O($$, OP_WRITE); /* value=pop; wcontext.write(value) */
! 279: };
! 280: call_value: '^' call_name store_params EON { /* ^field.$method{vasya} */
1.42 paf 281: $$=$2; /* with_xxx,diving code; stack: context,method_junction */
1.54 paf 282: O($$, OP_GET_METHOD_FRAME); /* stack: context,method_frame */
1.9 paf 283: P($$, $3); /* filling method_frame.store_params */
1.66 ! paf 284: O($$, OP_CALL); /* method_frame=pop; ncontext=pop; call(ncontext,method_frame) stack: value */
1.1 paf 285: };
286:
1.43 paf 287: call_name: name_without_curly_rdive;
1.38 paf 288:
1.9 paf 289: store_params: store_param | store_params store_param { $$=$1; P($$, $2) };
1.1 paf 290: store_param: store_round_param | store_curly_param;
1.47 paf 291: store_round_param: '[' store_param_parts ']' {$$=$2};
1.31 paf 292: store_param_parts:
1.32 paf 293: store_param_part
294: | store_param_parts ';' store_param_part { $$=$1; P($$, $3) }
1.31 paf 295: ;
1.10 paf 296: store_curly_param: '{' maybe_codes '}' {
1.25 paf 297: $$=N(POOL);
1.29 paf 298: PCA($$, $2);
1.54 paf 299: O($$, OP_STORE_PARAM);
1.1 paf 300: };
1.32 paf 301: store_param_part:
1.33 paf 302: empty /* optimized () case */
303: | STRING { /* optimized (STRING) case */
1.32 paf 304: $$=$1;
1.54 paf 305: O($$, OP_STORE_PARAM);
1.32 paf 306: }
1.55 paf 307: | constructor_code_value { /* (something complex) */
1.32 paf 308: $$=$1;
1.54 paf 309: O($$, OP_STORE_PARAM);
1.32 paf 310: }
311: ;
1.1 paf 312:
313: /* name */
314:
1.20 paf 315: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P($$, $2) };
1.1 paf 316:
1.9 paf 317: name_path: name_step | name_path name_step { $$=$1; P($$, $2) };
1.1 paf 318: name_step: name_advance1 '.';
319: name_advance1: name_expr_value {
320: /* stack: context */
321: $$=$1; /* stack: context,name */
1.54 paf 322: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 323: };
324: name_advance2: name_expr_value {
325: /* stack: context */
326: $$=$1; /* stack: context,name */
1.54 paf 327: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 328: }
1.4 paf 329: | STRING BOGUS
1.1 paf 330: ;
331: name_expr_value:
1.4 paf 332: STRING /* subname_is_const */
1.1 paf 333: | name_expr_subvar_value /* $subname_is_var_value */
334: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value[$...] */
335: ;
336: name_expr_subvar_value: '$' subvar_ref_name_rdive {
337: $$=$2;
1.54 paf 338: O($$, OP_GET_ELEMENT);
1.1 paf 339: };
1.4 paf 340: name_expr_with_subvar_value: STRING subvar_get_writes {
1.25 paf 341: $$=N(POOL);
1.54 paf 342: O($$, OP_CREATE_EWPOOL);
1.9 paf 343: P($$, $1);
1.54 paf 344: O($$, OP_WRITE);
1.9 paf 345: P($$, $2);
1.54 paf 346: O($$, OP_REDUCE_EWPOOL);
1.1 paf 347: };
1.18 paf 348: subvar_ref_name_rdive: subvar_ref_name_rdive_read | subvar_ref_name_rdive_root;
349: subvar_ref_name_rdive_read: STRING {
1.25 paf 350: $$=N(POOL);
1.54 paf 351: O($$, OP_WITH_READ);
1.9 paf 352: P($$, $1);
1.1 paf 353: };
1.18 paf 354: subvar_ref_name_rdive_root: ':' STRING {
1.25 paf 355: $$=N(POOL);
1.54 paf 356: O($$, OP_WITH_ROOT);
1.18 paf 357: P($$, $2);
358: };
1.9 paf 359: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P($$, $2) };
1.1 paf 360: subvar__get_write: '$' subvar_ref_name_rdive {
361: $$=$2;
1.54 paf 362: O($$, OP_GET_ELEMENT__WRITE);
1.42 paf 363: };
364:
1.44 paf 365: class_prefix: STRING ':' {
1.42 paf 366: String& name=*SLA2S($1);
367: VClass *vclass=static_cast<VClass *>(PC->request->classes().get(name));
368: if(!vclass) {
369: strcpy(PC->error, "'");
370: strcat(PC->error, name.cstr());
371: strcat(PC->error, "' class is undefined in call");
372: YYERROR;
373: }
1.48 paf 374: //TODO: убрать зависимость от статических @USE, сделать имя, а не ссылку
1.42 paf 375: $$=CL(vclass); // vclass
1.1 paf 376: };
377:
378:
379: /* with */
380:
381: with: '$' name_without_curly_rdive '{' codes '}' {
382: $$=$2;
1.54 paf 383: O($$, OP_CREATE_RWPOOL);
1.9 paf 384: P($$, $4);
1.54 paf 385: O($$, OP_REDUCE_RWPOOL);
386: O($$, OP_WRITE);
1.1 paf 387: };
1.53 paf 388:
1.56 paf 389: /* expr */
1.53 paf 390:
1.56 paf 391: any_expr:
1.55 paf 392: empty_double_value /* optimized $var() case */
1.62 paf 393: | optimized_expr /* $var(something) */
1.53 paf 394: ;
1.62 paf 395: optimized_expr: expr {
396: if(($$=$1)->size()==2) { // only one string literal in there?
397: change_string_literal_to_double_literal($$); // make that string literal Double
398: }
399: };
1.56 paf 400: expr:
1.62 paf 401: STRING
1.64 paf 402: | get_value
1.66 ! paf 403: | call_value
1.64 paf 404: | '"' string_inside_quotes_value '"' { $$ = $2; }
1.60 paf 405: | '(' expr ')' { $$ = $2; }
406: /* stack: operand // stack: @operand */
407: | '-' expr %prec NEG { $$=$2; O($$, OP_NEG) }
408: | '~' expr %prec INV { $$=$2; O($$, OP_INV) }
409: | '!' expr %prec NOT { $$=$2; O($$, OP_NOT) }
1.57 paf 410: /*todo: def in fexists*/
1.60 paf 411: /* stack: a,b // stack: a@b */
412: | expr '-' expr { $$=$1; P($$, $3); O($$, OP_SUB) }
413: | expr '+' expr { $$=$1; P($$, $3); O($$, OP_ADD) }
414: | expr '*' expr { $$=$1; P($$, $3); O($$, OP_MUL) }
415: | expr '/' expr { $$=$1; P($$, $3); O($$, OP_DIV) }
416: | expr '%' expr { $$=$1; P($$, $3); O($$, OP_MOD) }
417: | expr '&' expr { $$=$1; P($$, $3); O($$, OP_BIN_AND) }
418: | expr '|' expr { $$=$1; P($$, $3); O($$, OP_BIN_OR) }
419: | expr '#' expr { $$=$1; P($$, $3); O($$, OP_BIN_XOR) }
420: | expr "&&" expr { $$=$1; P($$, $3); O($$, OP_LOG_AND) }
421: | expr "||" expr { $$=$1; P($$, $3); O($$, OP_LOG_OR) }
422: | expr "##" expr { $$=$1; P($$, $3); O($$, OP_LOG_XOR) }
423: | expr '<' expr { $$=$1; P($$, $3); O($$, OP_NUM_LT) }
424: | expr '>' expr { $$=$1; P($$, $3); O($$, OP_NUM_GT) }
425: | expr "<=" expr { $$=$1; P($$, $3); O($$, OP_NUM_LE) }
426: | expr ">=" expr { $$=$1; P($$, $3); O($$, OP_NUM_GE) }
427: | expr "==" expr { $$=$1; P($$, $3); O($$, OP_NUM_EQ) }
428: | expr "!=" expr { $$=$1; P($$, $3); O($$, OP_NUM_NE) }
1.61 paf 429: | expr "lt" expr { $$=$1; P($$, $3); O($$, OP_STR_LT) }
430: | expr "gt" expr { $$=$1; P($$, $3); O($$, OP_STR_GT) }
431: | expr "le" expr { $$=$1; P($$, $3); O($$, OP_STR_LE) }
432: | expr "ge" expr { $$=$1; P($$, $3); O($$, OP_STR_GE) }
433: | expr "eq" expr { $$=$1; P($$, $3); O($$, OP_STR_EQ) }
434: | expr "ne" expr { $$=$1; P($$, $3); O($$, OP_STR_NE) }
1.56 paf 435: ;
1.55 paf 436:
1.65 paf 437: string_inside_quotes_value: maybe_codes {
1.64 paf 438: $$=N(POOL);
439: O($$, OP_CREATE_SWPOOL); /* stack: empty write context */
1.65 paf 440: P($$, $1); /* some code that write to that context */
1.64 paf 441: O($$, OP_REDUCE_SWPOOL); /* context=pop; stack: context.get_string() */
1.53 paf 442: };
1.1 paf 443:
1.27 paf 444: /* basics */
1.1 paf 445:
1.4 paf 446: write_str_literal: STRING {
1.59 paf 447: $$=$1;
448: O($$, OP_WRITE);
1.54 paf 449: };
450:
1.55 paf 451: empty_double_value: /* empty */ { $$=VL(NEW VDouble(POOL)) };
452: empty_string_value: /* empty */ { $$=VL(NEW VString(POOL)) };
1.25 paf 453: empty: /* empty */ { $$=N(POOL) };
1.1 paf 454:
455: %%
456:
457: /*
458: 000$111(2222)00
459: 000$111{3333}00
1.9 paf 460: $,^: push,=0
1.1 paf 461: 1:( { break=pop
462: 2:( ) pop
463: 3:{ } pop
464:
465: 000^111(2222)4444{33333}4000
1.9 paf 466: $,^: push,=0
1.1 paf 467: 1:( { break=pop
468: 2:( )=4
469: 3:{ }=4
470: 4:[^({]=pop
471: */
472:
473: int yylex(YYSTYPE *lvalp, void *pc) {
474: #define lexical_brackets_nestage PC->brackets_nestages[PC->sp]
1.48 paf 475: #define RC {result=c; goto break2; }
1.1 paf 476:
477: register int c;
478: int result;
479:
480: if(PC->pending_state) {
481: result=PC->pending_state;
482: PC->pending_state=0;
483: return result;
484: }
485:
1.9 paf 486: char *begin=PC->source;
487: char *end;
488: int begin_line=PC->line;
1.58 paf 489: bool skip_analized_char=false;
1.50 paf 490: while(true) {
1.9 paf 491: c=*(end=(PC->source++));
1.1 paf 492:
1.4 paf 493: if(c=='\n') {
1.1 paf 494: PC->line++;
1.8 paf 495: PC->col=0;
1.10 paf 496: } else
1.4 paf 497: PC->col++;
1.1 paf 498:
1.48 paf 499: // escaping: ^^ ^$ ^; ^) ^} ^( ^{ ^"
500: if(c=='^')
501: switch(*PC->source) {
502: case '^': case '$': case ';':
503: case '[': case ']':
504: case '{': case '}':
505: case '"':
1.40 paf 506: if(end!=begin) {
507: // append piece till ^
508: PC->string->APPEND(begin, end-begin, PC->file, begin_line);
509: }
1.63 paf 510: // reset piece 'begin' position & line
1.40 paf 511: begin=PC->source; // ^
1.9 paf 512: begin_line=PC->line;
1.40 paf 513: // skip over ^ and _
1.50 paf 514: PC->source++; PC->col++;
1.40 paf 515: // skip analysis = forced literal
1.1 paf 516: continue;
517: }
518: switch(PC->ls) {
1.10 paf 519:
520: // USER'S = NOT OURS
1.1 paf 521: case LS_USER:
1.48 paf 522: switch(c) {
523: case '$':
1.10 paf 524: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 525: RC;
526: case '^':
527: push_LS(PC, LS_METHOD_NAME);
528: RC;
529: case '@':
530: if(PC->col==0+1) {
531: push_LS(PC, LS_DEF_NAME);
532: RC;
533: }
534: break;
1.1 paf 535: }
1.48 paf 536: break;
537:
538: // STRING IN EXPRESSION
539: case LS_EXPRESSION_STRING:
540: switch(c) {
541: case '"':
542: pop_LS(PC); //"abc".
543: RC;
544: case '$':
545: push_LS(PC, LS_VAR_NAME_SIMPLE);
546: RC;
547: case '^':
1.10 paf 548: push_LS(PC, LS_METHOD_NAME);
1.48 paf 549: RC;
1.10 paf 550: }
551: break;
552:
553: // METHOD DEFINITION
554: case LS_DEF_NAME:
1.48 paf 555: switch(c) {
556: case '[':
1.10 paf 557: PC->ls=LS_DEF_PARAMS;
1.48 paf 558: RC;
559: case '\n':
560: PC->ls=LS_DEF_SPECIAL_BODY;
561: RC;
1.10 paf 562: }
563: break;
1.48 paf 564:
1.10 paf 565: case LS_DEF_PARAMS:
1.48 paf 566: switch(c) {
567: case ';':
568: RC;
569: case ']':
1.10 paf 570: PC->ls=*PC->source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 571: RC;
1.49 paf 572: case '\n': // wrong. bailing out
1.10 paf 573: pop_LS(PC);
1.48 paf 574: RC;
1.10 paf 575: }
576: break;
1.48 paf 577:
1.10 paf 578: case LS_DEF_LOCALS:
1.48 paf 579: switch(c) {
580: case '[':
581: case ';':
582: RC;
583: case ']':
1.10 paf 584: PC->ls=LS_DEF_COMMENT;
1.48 paf 585: RC;
586: case '\n': // wrong. bailing out
1.10 paf 587: pop_LS(PC);
1.48 paf 588: RC;
1.10 paf 589: }
590: break;
1.48 paf 591:
1.10 paf 592: case LS_DEF_COMMENT:
593: if(c=='\n') {
594: pop_LS(PC);
1.48 paf 595: RC;
1.37 paf 596: }
597: break;
598:
1.48 paf 599: case LS_DEF_SPECIAL_BODY:
1.37 paf 600: if(c=='\n') {
1.48 paf 601: switch(*PC->source) {
602: case '@': case 0: // end of special_code
1.37 paf 603: pop_LS(PC);
1.48 paf 604: break;
605: }
606: RC;
607: }
608: break;
609:
610: // (EXPRESSION)
611: case LS_EXPRESSION_BODY:
612: switch(c) {
613: case ')':
614: if(--lexical_brackets_nestage==0)
615: pop_LS(PC); //(EXPRESSION).
616: RC;
617: case '$':
618: push_LS(PC, LS_VAR_NAME_IN_EXPRESSION);
619: RC;
620: case '^':
621: push_LS(PC, LS_METHOD_NAME);
622: RC;
623: case '(':
624: lexical_brackets_nestage++;
625: RC;
626: case '+': case '-': case '*': case '/': case '%':
1.58 paf 627: case '~':
1.48 paf 628: case ';':
629: RC;
1.59 paf 630: case '&': case '|': case '#':
1.58 paf 631: if(*PC->source==c) { // && ||
1.59 paf 632: result=c=='#'?LXOR:c=='&'?LAND:LOR;
1.58 paf 633: skip_analized_char=true;
634: } else
635: result=c;
636: goto break2;
637: case '<': case '>': case '=': case '!':
638: if(*PC->source=='=') { // <= >= == !=
639: skip_analized_char=true;
640: switch(c) {
641: case '<': result=NLE; break;
642: case '>': result=NGE; break;
643: case '=': result=NEQ; break;
644: case '!': result=NNE; break;
645: }
646: } else
647: result=c;
648: goto break2;
1.48 paf 649: case '"':
650: push_LS(PC, LS_EXPRESSION_STRING);
651: RC;
1.50 paf 652: case 'l': case 'g': case 'e': case 'n':
1.51 paf 653: if(end==begin) // right after whitespace
1.58 paf 654: switch(*PC->source) {
1.51 paf 655: // case '?': // ok [and bad cases, yacc would bark at them]
656: case 't': // lt gt [et nt]
1.62 paf 657: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
658: skip_analized_char=true;
1.58 paf 659: goto break2;
1.51 paf 660: case 'e': // le ge ne [ee]
1.58 paf 661: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1.62 paf 662: skip_analized_char=true;
1.58 paf 663: goto break2;
1.51 paf 664: case 'q': // eq [lq gq nq]
1.58 paf 665: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1.62 paf 666: skip_analized_char=true;
1.58 paf 667: goto break2;
1.50 paf 668: }
1.48 paf 669: break;
670: case ' ': case '\t': case '\n':
1.63 paf 671: if(end!=begin) { // there were a string after previous operator?
672: result=0; // return that string
673: goto break2;
1.48 paf 674: }
1.63 paf 675: // that's a leading|traling space or after-operator-space
676: // ignoring it
677: // reset piece 'begin' position & line
1.58 paf 678: begin=PC->source; // after whitespace char
1.48 paf 679: begin_line=PC->line;
680: continue;
1.1 paf 681: }
682: break;
683:
1.10 paf 684: // VARIABLE GET/PUT/WITH
1.1 paf 685: case LS_VAR_NAME_SIMPLE:
1.48 paf 686: case LS_VAR_NAME_IN_EXPRESSION:
687: if(PC->ls==LS_VAR_NAME_IN_EXPRESSION) {
1.56 paf 688: // name in expr ends also before binary operators
1.48 paf 689: switch(c) {
690: case '+': case '-': case '*': case '/': case '%':
691: case '&': case '|':
692: case '<': case '>': case '=': case '!':
693: pop_LS(PC);
694: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
695: result=EON;
696: goto break2;
697: }
698: }
699: switch(c) {
700: case 0:
701: case ' ': case '\t': case '\n':
702: case ';':
1.64 paf 703: case ']': case '}': case ')': case '"':
1.1 paf 704: pop_LS(PC);
1.32 paf 705: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 706: result=EON;
1.1 paf 707: goto break2;
1.48 paf 708: case '[':
709: PC->ls=LS_VAR_SQUARE;
1.1 paf 710: lexical_brackets_nestage=1;
1.48 paf 711: RC;
712: case '{':
713: if(begin==end) { // ${name}, no need of EON, switching LS
714: PC->ls=LS_VAR_NAME_CURLY;
715: } else {
716: PC->ls=LS_VAR_CURLY;
717: lexical_brackets_nestage=1;
718: }
719:
720: RC;
721: case '(':
722: PC->ls=LS_EXPRESSION_BODY;
1.1 paf 723: lexical_brackets_nestage=1;
1.48 paf 724: RC;
725: case '.': // name part delim
726: case '$': // name part subvar
727: case ':': // ':name' or 'class:name'
728: RC;
1.1 paf 729: }
730: break;
1.48 paf 731:
1.1 paf 732: case LS_VAR_NAME_CURLY:
1.48 paf 733: switch(c) {
734: case '}': // ${name} finished, restoring LS
1.1 paf 735: pop_LS(PC);
1.48 paf 736: RC;
737: case '.': // name part delim
738: case '$': // name part subvar
739: case ':': // ':name' or 'class:name'
740: RC;
1.1 paf 741: }
742: break;
1.48 paf 743:
744: case LS_VAR_SQUARE:
745: switch(c) {
746: case '$':
1.10 paf 747: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 748: RC;
749: case '^':
1.10 paf 750: push_LS(PC, LS_METHOD_NAME);
1.48 paf 751: RC;
752: case ']':
1.1 paf 753: if(--lexical_brackets_nestage==0) {
754: pop_LS(PC);
1.48 paf 755: RC;
1.1 paf 756: }
1.48 paf 757: break;
758: case ';': // operator_or_fmt;value delim
759: RC;
760: case '[':
761: lexical_brackets_nestage++;
762: break;
1.1 paf 763: }
764: break;
1.48 paf 765:
1.1 paf 766: case LS_VAR_CURLY:
1.48 paf 767: switch(c) {
768: case '$':
1.10 paf 769: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 770: RC;
771: case '^':
1.10 paf 772: push_LS(PC, LS_METHOD_NAME);
1.48 paf 773: RC;
774: case '}':
1.1 paf 775: if(--lexical_brackets_nestage==0) {
776: pop_LS(PC);
1.48 paf 777: RC;
1.1 paf 778: }
1.48 paf 779: break;
780: case '{':
1.1 paf 781: lexical_brackets_nestage++;
1.48 paf 782: break;
783: }
1.1 paf 784: break;
785:
1.10 paf 786: // METHOD CALL
1.1 paf 787: case LS_METHOD_NAME:
1.48 paf 788: switch(c) {
789: case '[':
790: PC->ls=LS_METHOD_SQUARE;
1.1 paf 791: lexical_brackets_nestage=1;
1.48 paf 792: RC;
793: case '{':
1.1 paf 794: PC->ls=LS_METHOD_CURLY;
795: lexical_brackets_nestage=1;
1.48 paf 796: RC;
797: case '.': // name part delim
798: case '$': // name part subvar
799: case ':': // ':name' or 'class:name'
800: RC;
1.1 paf 801: }
802: break;
1.48 paf 803:
804: case LS_METHOD_SQUARE:
805: switch(c) {
806: case '$':
1.10 paf 807: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 808: RC;
809: case '^':
1.10 paf 810: push_LS(PC, LS_METHOD_NAME);
1.48 paf 811: RC;
812: case ';': // param delim
813: RC;
814: case ']':
1.1 paf 815: if(--lexical_brackets_nestage==0) {
816: PC->ls=LS_METHOD_AFTER;
1.48 paf 817: RC;
1.1 paf 818: }
1.48 paf 819: break;
820: case '[':
1.1 paf 821: lexical_brackets_nestage++;
1.48 paf 822: break;
823: }
1.1 paf 824: break;
1.48 paf 825:
1.1 paf 826: case LS_METHOD_CURLY:
1.48 paf 827: switch(c) {
828: case '$':
1.10 paf 829: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 830: RC;
831: case '^':
1.10 paf 832: push_LS(PC, LS_METHOD_NAME);
1.48 paf 833: RC;
834: case '}':
1.1 paf 835: if(--lexical_brackets_nestage==0) {
836: PC->ls=LS_METHOD_AFTER;
1.48 paf 837: RC;
1.1 paf 838: }
1.48 paf 839: break;
840: case '{':
1.1 paf 841: lexical_brackets_nestage++;
1.48 paf 842: break;
843: }
1.1 paf 844: break;
1.48 paf 845:
1.1 paf 846: case LS_METHOD_AFTER:
1.47 paf 847: if(c=='[') {/* )( }( */
1.48 paf 848: PC->ls=LS_METHOD_SQUARE;
1.1 paf 849: lexical_brackets_nestage=1;
1.48 paf 850: RC;
1.1 paf 851: }
852: if(c=='{') {/* ){ }{ */
853: PC->ls=LS_METHOD_CURLY;
854: lexical_brackets_nestage=1;
1.48 paf 855: RC;
1.1 paf 856: }
857: pop_LS(PC);
1.32 paf 858: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 859: result=EON;
1.1 paf 860: goto break2;
861: }
1.9 paf 862: if(c==0) {
1.1 paf 863: result=-1;
864: break;
865: }
866: }
867:
868: break2:
1.59 paf 869: if(end!=begin) { // there is last piece?
870: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
871: // strip last \n
1.10 paf 872: end--;
1.59 paf 873: }
874: if(end!=begin) { // last piece still alive?
875: // append it
1.30 paf 876: PC->string->APPEND(begin, end-begin, PC->file, begin_line/*, start_col*/);
877: }
1.59 paf 878: }
879: if(PC->string->size()) { // something accumulated?
1.17 paf 880: // create STRING value: array of OP_VALUE+vstring
1.55 paf 881: *lvalp=VL(NEW VString(*PC->string));
1.10 paf 882: // new pieces storage
1.25 paf 883: PC->string=NEW String(POOL);
1.58 paf 884: // make current result be pending for next call, return STRING for now
885: PC->pending_state=result; result=STRING;
886: }
887: if(skip_analized_char) {
888: PC->source++; PC->col++;
1.1 paf 889: }
1.58 paf 890: return result;
1.1 paf 891: }
892:
1.9 paf 893: int real_yyerror(parse_control *pc, char *s) /* Called by yyparse on error */
1.1 paf 894: {
1.16 paf 895: //fprintf(stderr, "[%s]\n", s);
1.6 paf 896:
1.46 paf 897: strncpy(pc->error, s, MAX_STRING); // TODO: перепроверить с треклятым последним байтом
1.1 paf 898: return 1;
899: }
900:
901: static void
1.9 paf 902: yyprint(
1.1 paf 903: FILE *file,
904: int type,
905: YYSTYPE value)
906: {
1.9 paf 907: if(type==STRING)
1.38 paf 908: fprintf(file, " \"%s\"", SLA2S(value)->cstr());
1.1 paf 909: }
910:
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