Annotation of parser3/src/main/compile.y, revision 1.62
1.24 paf 1: /*
1.62 ! paf 2: $Id: compile.y,v 1.61 2001/03/07 09:29:54 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($$, $2);
1.1 paf 183: };
184: code: write_str_literal | action;
185: action: get | put | with | call;
186:
187: /* get */
188:
1.42 paf 189: get: '$' get_name {
1.1 paf 190: $$=$2; /* stack: resulting value */
1.54 paf 191: O($$, OP_WRITE); /* value=pop; write(value) */
1.1 paf 192: };
1.43 paf 193: get_name: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 194: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 195: name_without_curly_rdive:
196: name_without_curly_rdive_read
197: | name_without_curly_rdive_root
198: | name_without_curly_rdive_class;
1.19 paf 199: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.25 paf 200: $$=N(POOL);
1.22 paf 201: Array *diving_code=$1;
1.38 paf 202: String *first_name=SLA2S(diving_code);
1.23 paf 203: if(first_name && *first_name==SELF_NAME) {
1.54 paf 204: O($$, OP_WITH_SELF); /* stack: starting context */
1.22 paf 205: P($$, diving_code,
206: /* skip over... */
207: diving_code->size()>2?3/*OP_+string+get_element*/:2/*OP_+string*/);
208: } else {
1.54 paf 209: O($$, OP_WITH_READ); /* stack: starting context */
1.22 paf 210: P($$, diving_code);
211: }
212: /* diving code; stack: current context */
1.1 paf 213: };
1.19 paf 214: name_without_curly_rdive_root: ':' name_without_curly_rdive_code {
1.25 paf 215: $$=N(POOL);
1.54 paf 216: O($$, OP_WITH_ROOT); /* stack: starting context */
1.19 paf 217: P($$, $2); /* diving code; stack: current context */
218: };
1.44 paf 219: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P($$, $2) };
1.19 paf 220: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P($$, $2) };
1.1 paf 221:
222: /* put */
223:
1.52 paf 224: put: '$' name_expr_wdive constructor_value {
1.20 paf 225: $$=$2; /* stack: context,name */
1.52 paf 226: P($$, $3); /* stack: context,name,constructor_value */
1.54 paf 227: O($$, OP_CONSTRUCT); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.20 paf 228: };
1.44 paf 229: name_expr_wdive:
230: name_expr_wdive_write
231: | name_expr_wdive_root
232: | name_expr_wdive_class;
1.28 paf 233: name_expr_wdive_write: name_expr_dive_code {
1.44 paf 234: $$=N(POOL);
1.23 paf 235: Array *diving_code=$1;
1.38 paf 236: String *first_name=SLA2S(diving_code);
1.23 paf 237: if(first_name && *first_name==SELF_NAME) {
1.54 paf 238: O($$, OP_WITH_SELF); /* stack: starting context */
1.23 paf 239: P($$, diving_code,
240: /* skip over... */
241: diving_code->size()>2?3/*OP_+string+get_element*/:2/*OP_+string*/);
242: } else {
1.54 paf 243: O($$, OP_WITH_WRITE); /* stack: starting context */
1.23 paf 244: P($$, diving_code);
245: }
246: /* diving code; stack: current context */
1.20 paf 247: };
1.28 paf 248: name_expr_wdive_root: ':' name_expr_dive_code {
1.25 paf 249: $$=N(POOL);
1.54 paf 250: O($$, OP_WITH_ROOT); /* stack: starting context */
1.9 paf 251: P($$, $2); /* diving code; stack: context,name */
1.1 paf 252: };
1.44 paf 253: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P($$, $2) };
1.20 paf 254:
1.1 paf 255: constructor_value:
1.55 paf 256: '[' any_constructor_code_value ']' { $$=$2 }
1.56 paf 257: | '(' any_expr ')' { $$=$2 }
1.52 paf 258: ;
1.55 paf 259: any_constructor_code_value:
260: empty_string_value /* optimized $var[] case */
1.52 paf 261: | STRING /* optimized $var[STRING] case */
1.55 paf 262: | constructor_code_value /* $var[something complex] */
1.1 paf 263: ;
1.55 paf 264: constructor_code_value: constructor_code {
1.25 paf 265: $$=N(POOL);
1.54 paf 266: O($$, OP_CREATE_EWPOOL); /* stack: empty write context */
1.9 paf 267: P($$, $1); /* some codes to that context */
1.54 paf 268: O($$, OP_REDUCE_EWPOOL); /* context=pop; stack: context.value() */
1.1 paf 269: };
1.55 paf 270: constructor_code: codes__excluding_sole_str_literal;
1.27 paf 271: codes__excluding_sole_str_literal: action | code codes { $$=$1; P($$, $2) };
272:
1.1 paf 273: /* call */
274:
1.38 paf 275: call: '^' call_name store_params EON { /* ^field.$method{vasya} */
1.42 paf 276: $$=$2; /* with_xxx,diving code; stack: context,method_junction */
1.54 paf 277: O($$, OP_GET_METHOD_FRAME); /* stack: context,method_frame */
1.9 paf 278: P($$, $3); /* filling method_frame.store_params */
1.54 paf 279: O($$, OP_CALL); /* method_frame=pop; ncontext=pop; call(ncontext,method_frame) */
1.1 paf 280: };
281:
1.43 paf 282: call_name: name_without_curly_rdive;
1.38 paf 283:
1.9 paf 284: store_params: store_param | store_params store_param { $$=$1; P($$, $2) };
1.1 paf 285: store_param: store_round_param | store_curly_param;
1.47 paf 286: store_round_param: '[' store_param_parts ']' {$$=$2};
1.31 paf 287: store_param_parts:
1.32 paf 288: store_param_part
289: | store_param_parts ';' store_param_part { $$=$1; P($$, $3) }
1.31 paf 290: ;
1.10 paf 291: store_curly_param: '{' maybe_codes '}' {
1.25 paf 292: $$=N(POOL);
1.29 paf 293: PCA($$, $2);
1.54 paf 294: O($$, OP_STORE_PARAM);
1.1 paf 295: };
1.32 paf 296: store_param_part:
1.33 paf 297: empty /* optimized () case */
298: | STRING { /* optimized (STRING) case */
1.32 paf 299: $$=$1;
1.54 paf 300: O($$, OP_STORE_PARAM);
1.32 paf 301: }
1.55 paf 302: | constructor_code_value { /* (something complex) */
1.32 paf 303: $$=$1;
1.54 paf 304: O($$, OP_STORE_PARAM);
1.32 paf 305: }
306: ;
1.1 paf 307:
308: /* name */
309:
1.20 paf 310: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P($$, $2) };
1.1 paf 311:
1.9 paf 312: name_path: name_step | name_path name_step { $$=$1; P($$, $2) };
1.1 paf 313: name_step: name_advance1 '.';
314: name_advance1: name_expr_value {
315: /* stack: context */
316: $$=$1; /* stack: context,name */
1.54 paf 317: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 318: };
319: name_advance2: name_expr_value {
320: /* stack: context */
321: $$=$1; /* stack: context,name */
1.54 paf 322: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 323: }
1.4 paf 324: | STRING BOGUS
1.1 paf 325: ;
326: name_expr_value:
1.4 paf 327: STRING /* subname_is_const */
1.1 paf 328: | name_expr_subvar_value /* $subname_is_var_value */
329: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value[$...] */
330: ;
331: name_expr_subvar_value: '$' subvar_ref_name_rdive {
332: $$=$2;
1.54 paf 333: O($$, OP_GET_ELEMENT);
1.1 paf 334: };
1.4 paf 335: name_expr_with_subvar_value: STRING subvar_get_writes {
1.25 paf 336: $$=N(POOL);
1.54 paf 337: O($$, OP_CREATE_EWPOOL);
1.9 paf 338: P($$, $1);
1.54 paf 339: O($$, OP_WRITE);
1.9 paf 340: P($$, $2);
1.54 paf 341: O($$, OP_REDUCE_EWPOOL);
1.1 paf 342: };
1.18 paf 343: subvar_ref_name_rdive: subvar_ref_name_rdive_read | subvar_ref_name_rdive_root;
344: subvar_ref_name_rdive_read: STRING {
1.25 paf 345: $$=N(POOL);
1.54 paf 346: O($$, OP_WITH_READ);
1.9 paf 347: P($$, $1);
1.1 paf 348: };
1.18 paf 349: subvar_ref_name_rdive_root: ':' STRING {
1.25 paf 350: $$=N(POOL);
1.54 paf 351: O($$, OP_WITH_ROOT);
1.18 paf 352: P($$, $2);
353: };
1.9 paf 354: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P($$, $2) };
1.1 paf 355: subvar__get_write: '$' subvar_ref_name_rdive {
356: $$=$2;
1.54 paf 357: O($$, OP_GET_ELEMENT__WRITE);
1.42 paf 358: };
359:
1.44 paf 360: class_prefix: STRING ':' {
1.42 paf 361: String& name=*SLA2S($1);
362: VClass *vclass=static_cast<VClass *>(PC->request->classes().get(name));
363: if(!vclass) {
364: strcpy(PC->error, "'");
365: strcat(PC->error, name.cstr());
366: strcat(PC->error, "' class is undefined in call");
367: YYERROR;
368: }
1.48 paf 369: //TODO: убрать зависимость от статических @USE, сделать имя, а не ссылку
1.42 paf 370: $$=CL(vclass); // vclass
1.1 paf 371: };
372:
373:
374: /* with */
375:
376: with: '$' name_without_curly_rdive '{' codes '}' {
377: $$=$2;
1.54 paf 378: O($$, OP_CREATE_RWPOOL);
1.9 paf 379: P($$, $4);
1.54 paf 380: O($$, OP_REDUCE_RWPOOL);
381: O($$, OP_WRITE);
1.1 paf 382: };
1.53 paf 383:
1.56 paf 384: /* expr */
1.53 paf 385:
1.56 paf 386: any_expr:
1.55 paf 387: empty_double_value /* optimized $var() case */
1.62 ! paf 388: | optimized_expr /* $var(something) */
1.53 paf 389: ;
1.62 ! paf 390: optimized_expr: expr {
! 391: if(($$=$1)->size()==2) { // only one string literal in there?
! 392: change_string_literal_to_double_literal($$); // make that string literal Double
! 393: }
! 394: };
1.56 paf 395: expr:
1.62 ! paf 396: STRING
1.60 paf 397: | '(' expr ')' { $$ = $2; }
398: /* stack: operand // stack: @operand */
399: | '-' expr %prec NEG { $$=$2; O($$, OP_NEG) }
400: | '~' expr %prec INV { $$=$2; O($$, OP_INV) }
401: | '!' expr %prec NOT { $$=$2; O($$, OP_NOT) }
1.57 paf 402: /*todo: def in fexists*/
1.60 paf 403: /* stack: a,b // stack: a@b */
404: | expr '-' expr { $$=$1; P($$, $3); O($$, OP_SUB) }
405: | expr '+' expr { $$=$1; P($$, $3); O($$, OP_ADD) }
406: | expr '*' expr { $$=$1; P($$, $3); O($$, OP_MUL) }
407: | expr '/' expr { $$=$1; P($$, $3); O($$, OP_DIV) }
408: | expr '%' expr { $$=$1; P($$, $3); O($$, OP_MOD) }
409: | expr '&' expr { $$=$1; P($$, $3); O($$, OP_BIN_AND) }
410: | expr '|' expr { $$=$1; P($$, $3); O($$, OP_BIN_OR) }
411: | expr '#' expr { $$=$1; P($$, $3); O($$, OP_BIN_XOR) }
412: | expr "&&" expr { $$=$1; P($$, $3); O($$, OP_LOG_AND) }
413: | expr "||" expr { $$=$1; P($$, $3); O($$, OP_LOG_OR) }
414: | expr "##" expr { $$=$1; P($$, $3); O($$, OP_LOG_XOR) }
415: | expr '<' expr { $$=$1; P($$, $3); O($$, OP_NUM_LT) }
416: | expr '>' expr { $$=$1; P($$, $3); O($$, OP_NUM_GT) }
417: | expr "<=" expr { $$=$1; P($$, $3); O($$, OP_NUM_LE) }
418: | expr ">=" expr { $$=$1; P($$, $3); O($$, OP_NUM_GE) }
419: | expr "==" expr { $$=$1; P($$, $3); O($$, OP_NUM_EQ) }
420: | expr "!=" expr { $$=$1; P($$, $3); O($$, OP_NUM_NE) }
1.61 paf 421: | expr "lt" expr { $$=$1; P($$, $3); O($$, OP_STR_LT) }
422: | expr "gt" expr { $$=$1; P($$, $3); O($$, OP_STR_GT) }
423: | expr "le" expr { $$=$1; P($$, $3); O($$, OP_STR_LE) }
424: | expr "ge" expr { $$=$1; P($$, $3); O($$, OP_STR_GE) }
425: | expr "eq" expr { $$=$1; P($$, $3); O($$, OP_STR_EQ) }
426: | expr "ne" expr { $$=$1; P($$, $3); O($$, OP_STR_NE) }
1.56 paf 427: ;
1.55 paf 428:
1.53 paf 429: /*
1.56 paf 430: complex_expr_value: complex_expr {
1.53 paf 431: $$=N(POOL);
1.54 paf 432: O($$, OP_CREATE_SWPOOL); /* stack: empty write context * /
1.53 paf 433: P($$, $1); /* some codes to that context * /
1.54 paf 434: O($$, OP_REDUCE_SWPOOL); /* context=pop; stack: context.get_string() * /
1.53 paf 435: };
436: */
1.1 paf 437:
1.27 paf 438: /* basics */
1.1 paf 439:
1.4 paf 440: write_str_literal: STRING {
1.59 paf 441: $$=$1;
442: O($$, OP_WRITE);
1.54 paf 443: };
444:
1.55 paf 445: empty_double_value: /* empty */ { $$=VL(NEW VDouble(POOL)) };
446: empty_string_value: /* empty */ { $$=VL(NEW VString(POOL)) };
1.25 paf 447: empty: /* empty */ { $$=N(POOL) };
1.1 paf 448:
449: %%
450:
451: /*
452: 000$111(2222)00
453: 000$111{3333}00
1.9 paf 454: $,^: push,=0
1.1 paf 455: 1:( { break=pop
456: 2:( ) pop
457: 3:{ } pop
458:
459: 000^111(2222)4444{33333}4000
1.9 paf 460: $,^: push,=0
1.1 paf 461: 1:( { break=pop
462: 2:( )=4
463: 3:{ }=4
464: 4:[^({]=pop
465: */
466:
467: int yylex(YYSTYPE *lvalp, void *pc) {
468: #define lexical_brackets_nestage PC->brackets_nestages[PC->sp]
1.48 paf 469: #define RC {result=c; goto break2; }
1.1 paf 470:
471: register int c;
472: int result;
473:
474: if(PC->pending_state) {
475: result=PC->pending_state;
476: PC->pending_state=0;
477: return result;
478: }
479:
1.9 paf 480: char *begin=PC->source;
481: char *end;
482: int begin_line=PC->line;
1.58 paf 483: bool skip_analized_char=false;
1.50 paf 484: while(true) {
1.9 paf 485: c=*(end=(PC->source++));
1.1 paf 486:
1.4 paf 487: if(c=='\n') {
1.1 paf 488: PC->line++;
1.8 paf 489: PC->col=0;
1.10 paf 490: } else
1.4 paf 491: PC->col++;
1.1 paf 492:
1.48 paf 493: // escaping: ^^ ^$ ^; ^) ^} ^( ^{ ^"
494: if(c=='^')
495: switch(*PC->source) {
496: case '^': case '$': case ';':
497: case '[': case ']':
498: case '{': case '}':
499: case '"':
1.40 paf 500: if(end!=begin) {
501: // append piece till ^
502: PC->string->APPEND(begin, end-begin, PC->file, begin_line);
503: }
504: // reset piece 'start' position & line
505: begin=PC->source; // ^
1.9 paf 506: begin_line=PC->line;
1.40 paf 507: // skip over ^ and _
1.50 paf 508: PC->source++; PC->col++;
1.40 paf 509: // skip analysis = forced literal
1.1 paf 510: continue;
511: }
512: switch(PC->ls) {
1.10 paf 513:
514: // USER'S = NOT OURS
1.1 paf 515: case LS_USER:
1.48 paf 516: switch(c) {
517: case '$':
1.10 paf 518: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 519: RC;
520: case '^':
521: push_LS(PC, LS_METHOD_NAME);
522: RC;
523: case '@':
524: if(PC->col==0+1) {
525: push_LS(PC, LS_DEF_NAME);
526: RC;
527: }
528: break;
1.1 paf 529: }
1.48 paf 530: break;
531:
532: // STRING IN EXPRESSION
533: case LS_EXPRESSION_STRING:
534: switch(c) {
535: case '"':
536: pop_LS(PC); //"abc".
537: RC;
538: case '$':
539: push_LS(PC, LS_VAR_NAME_SIMPLE);
540: RC;
541: case '^':
1.10 paf 542: push_LS(PC, LS_METHOD_NAME);
1.48 paf 543: RC;
1.10 paf 544: }
545: break;
546:
547: // METHOD DEFINITION
548: case LS_DEF_NAME:
1.48 paf 549: switch(c) {
550: case '[':
1.10 paf 551: PC->ls=LS_DEF_PARAMS;
1.48 paf 552: RC;
553: case '\n':
554: PC->ls=LS_DEF_SPECIAL_BODY;
555: RC;
1.10 paf 556: }
557: break;
1.48 paf 558:
1.10 paf 559: case LS_DEF_PARAMS:
1.48 paf 560: switch(c) {
561: case ';':
562: RC;
563: case ']':
1.10 paf 564: PC->ls=*PC->source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 565: RC;
1.49 paf 566: case '\n': // wrong. bailing out
1.10 paf 567: pop_LS(PC);
1.48 paf 568: RC;
1.10 paf 569: }
570: break;
1.48 paf 571:
1.10 paf 572: case LS_DEF_LOCALS:
1.48 paf 573: switch(c) {
574: case '[':
575: case ';':
576: RC;
577: case ']':
1.10 paf 578: PC->ls=LS_DEF_COMMENT;
1.48 paf 579: RC;
580: case '\n': // wrong. bailing out
1.10 paf 581: pop_LS(PC);
1.48 paf 582: RC;
1.10 paf 583: }
584: break;
1.48 paf 585:
1.10 paf 586: case LS_DEF_COMMENT:
587: if(c=='\n') {
588: pop_LS(PC);
1.48 paf 589: RC;
1.37 paf 590: }
591: break;
592:
1.48 paf 593: case LS_DEF_SPECIAL_BODY:
1.37 paf 594: if(c=='\n') {
1.48 paf 595: switch(*PC->source) {
596: case '@': case 0: // end of special_code
1.37 paf 597: pop_LS(PC);
1.48 paf 598: break;
599: }
600: RC;
601: }
602: break;
603:
604: // (EXPRESSION)
605: case LS_EXPRESSION_BODY:
606: switch(c) {
607: case ')':
608: if(--lexical_brackets_nestage==0)
609: pop_LS(PC); //(EXPRESSION).
610: RC;
611: case '$':
612: push_LS(PC, LS_VAR_NAME_IN_EXPRESSION);
613: RC;
614: case '^':
615: push_LS(PC, LS_METHOD_NAME);
616: RC;
617: case '(':
618: lexical_brackets_nestage++;
619: RC;
620: case '+': case '-': case '*': case '/': case '%':
1.58 paf 621: case '~':
1.48 paf 622: case ';':
623: RC;
1.59 paf 624: case '&': case '|': case '#':
1.58 paf 625: if(*PC->source==c) { // && ||
1.59 paf 626: result=c=='#'?LXOR:c=='&'?LAND:LOR;
1.58 paf 627: skip_analized_char=true;
628: } else
629: result=c;
630: goto break2;
631: case '<': case '>': case '=': case '!':
632: if(*PC->source=='=') { // <= >= == !=
633: skip_analized_char=true;
634: switch(c) {
635: case '<': result=NLE; break;
636: case '>': result=NGE; break;
637: case '=': result=NEQ; break;
638: case '!': result=NNE; break;
639: }
640: } else
641: result=c;
642: goto break2;
1.48 paf 643: case '"':
644: push_LS(PC, LS_EXPRESSION_STRING);
645: RC;
1.50 paf 646: case 'l': case 'g': case 'e': case 'n':
1.51 paf 647: if(end==begin) // right after whitespace
1.58 paf 648: switch(*PC->source) {
1.51 paf 649: // case '?': // ok [and bad cases, yacc would bark at them]
650: case 't': // lt gt [et nt]
1.62 ! paf 651: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
! 652: skip_analized_char=true;
1.58 paf 653: goto break2;
1.51 paf 654: case 'e': // le ge ne [ee]
1.58 paf 655: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1.62 ! paf 656: skip_analized_char=true;
1.58 paf 657: goto break2;
1.51 paf 658: case 'q': // eq [lq gq nq]
1.58 paf 659: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1.62 ! paf 660: skip_analized_char=true;
1.58 paf 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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