Annotation of parser3/src/main/compile.y, revision 1.69
1.24 paf 1: /*
1.69 ! paf 2: $Id: compile.y,v 1.68 2001/03/07 11:19:42 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:
1.67 paf 63: %token DEF "def"
64: %token IN "in"
65: %token FEXISTS "-f"
66:
1.57 paf 67: /* logical */
1.61 paf 68: %left "lt" "gt" "le" "ge"
69: %left "eq" "ne"
1.59 paf 70: %left '<' '>' "<=" ">=" "##"
1.57 paf 71: %left "==" "!="
72: %left "||"
73: %left "&&"
1.67 paf 74: %left "def" "in" "-f"
1.68 paf 75: %left '!'
1.57 paf 76:
77: /* bitwise */
1.59 paf 78: %left '#'
1.57 paf 79: %left '&' '|'
1.68 paf 80: %left '~'
1.57 paf 81:
1.56 paf 82: /* numerical */
1.55 paf 83: %left '-' '+'
1.57 paf 84: %left '*' '/' '%'
1.56 paf 85: %left NEG /* negation: unary - */
1.1 paf 86:
87: %%
88:
1.10 paf 89: all:
90: one_big_piece {
1.25 paf 91: String& name_main=*NEW String(POOL);
1.11 paf 92: name_main.APPEND_CONST(MAIN_METHOD_NAME);
1.25 paf 93: Array& param_names=*NEW Array(POOL);
94: Array& local_names=*NEW Array(POOL);
1.34 paf 95: Method& method=*NEW Method(POOL, name_main, param_names, local_names, *$1);
96: PC->vclass->add_method(name_main, method);
1.10 paf 97: }
98: | methods;
99:
100: methods: method | methods method;
101: one_big_piece: maybe_codes;
102:
1.34 paf 103: method: control_method | code_method;
104:
105: control_method: '@' STRING '\n'
106: control_strings {
1.38 paf 107: String& name=*SLA2S($2);
1.34 paf 108: YYSTYPE strings_code=$4;
1.37 paf 109: if(strings_code->size()<1*2) {
110: strcpy(PC->error, "@");
111: strcat(PC->error, name.cstr());
112: strcat(PC->error, " is empty");
113: YYERROR;
114: }
1.36 paf 115: if(name==CLASS_NAME) {
1.34 paf 116: if(strings_code->size()==1*2)
1.38 paf 117: PC->vclass->set_name(*SLA2S(strings_code));
1.34 paf 118: else {
119: strcpy(PC->error, "@"CLASS_NAME" must contain sole name");
120: YYERROR;
121: }
122: } else {
1.36 paf 123: if(name==USES_NAME) {
1.34 paf 124: for(int i=0; i<strings_code->size(); i+=2) {
1.38 paf 125: String *file=SLA2S(strings_code, i);
1.35 paf 126: file->APPEND_CONST(".p");
127: PC->request->use(file->cstr(), 0);
1.34 paf 128: }
1.45 paf 129: } else if(name==BASE_NAME) {
130: if(strings_code->size()==1*2) {
131: String& base_name=*SLA2S(strings_code);
132: VClass *base=static_cast<VClass *>(
133: PC->request->classes().get(base_name));
134: if(!base) {
135: strcpy(PC->error, base_name.cstr());
136: strcat(PC->error, ": undefined class in @"BASE_NAME);
1.34 paf 137: YYERROR;
138: }
1.45 paf 139: PC->vclass->set_base(*base);
140: } else {
141: strcpy(PC->error, "@"BASE_NAME" must contain sole name");
142: YYERROR;
1.34 paf 143: }
144: } else {
1.36 paf 145: strcpy(PC->error, name.cstr());
1.34 paf 146: strcat(PC->error, ": invalid special name. valid names are "
1.45 paf 147: CLASS_NAME", "USES_NAME" and "BASE_NAME);
1.34 paf 148: YYERROR;
149: }
150: }
151: };
1.37 paf 152: control_strings: control_string | control_strings control_string { $$=$1; P($$, $2) };
153: control_string: maybe_string '\n';
154: maybe_string: empty | STRING;
1.34 paf 155:
156: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n'
1.10 paf 157: maybe_codes {
1.38 paf 158: const String *name=SLA2S($2);
1.10 paf 159:
160: YYSTYPE params_names_code=$3;
1.25 paf 161: Array& params_names=*NEW Array(POOL);
1.10 paf 162: for(int i=0; i<params_names_code->size(); i+=2)
1.38 paf 163: params_names+=SLA2S(params_names_code, i);
1.10 paf 164:
165: YYSTYPE locals_names_code=$4;
1.25 paf 166: Array& locals_names=*NEW Array(POOL);
1.10 paf 167: for(int i=0; i<locals_names_code->size(); i+=2)
1.38 paf 168: locals_names+=SLA2S(locals_names_code, i);
1.10 paf 169:
1.34 paf 170: Method& method=*NEW Method(POOL, *name, params_names, locals_names, *$7);
171: PC->vclass->add_method(*name, method);
1.8 paf 172: };
1.10 paf 173:
174: maybe_bracketed_strings: empty | bracketed_maybe_strings;
175: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
176: maybe_strings: empty | strings;
177: strings: STRING | strings ';' STRING { $$=$1; P($$, $3) };
178:
179: maybe_comment: empty | STRING;
1.1 paf 180:
181: /* codes */
182:
1.10 paf 183: maybe_codes: empty | codes;
184:
1.1 paf 185: codes: code | codes code {
186: $$=$1;
1.9 paf 187: P($$, $2);
1.1 paf 188: };
189: code: write_str_literal | action;
190: action: get | put | with | call;
191:
192: /* get */
193:
1.64 paf 194: get: get_value {
195: $$=$1; /* stack: resulting value */
1.66 paf 196: O($$, OP_WRITE); /* value=pop; wcontext.write(value) */
1.1 paf 197: };
1.64 paf 198: get_value: '$' get_name_value { $$=$2 }
199: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 200: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 201: name_without_curly_rdive:
202: name_without_curly_rdive_read
203: | name_without_curly_rdive_root
204: | name_without_curly_rdive_class;
1.19 paf 205: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.25 paf 206: $$=N(POOL);
1.22 paf 207: Array *diving_code=$1;
1.38 paf 208: String *first_name=SLA2S(diving_code);
1.23 paf 209: if(first_name && *first_name==SELF_NAME) {
1.54 paf 210: O($$, OP_WITH_SELF); /* stack: starting context */
1.22 paf 211: P($$, diving_code,
212: /* skip over... */
213: diving_code->size()>2?3/*OP_+string+get_element*/:2/*OP_+string*/);
214: } else {
1.54 paf 215: O($$, OP_WITH_READ); /* stack: starting context */
1.22 paf 216: P($$, diving_code);
217: }
218: /* diving code; stack: current context */
1.1 paf 219: };
1.19 paf 220: name_without_curly_rdive_root: ':' name_without_curly_rdive_code {
1.25 paf 221: $$=N(POOL);
1.54 paf 222: O($$, OP_WITH_ROOT); /* stack: starting context */
1.19 paf 223: P($$, $2); /* diving code; stack: current context */
224: };
1.44 paf 225: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P($$, $2) };
1.19 paf 226: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P($$, $2) };
1.1 paf 227:
228: /* put */
229:
1.52 paf 230: put: '$' name_expr_wdive constructor_value {
1.20 paf 231: $$=$2; /* stack: context,name */
1.52 paf 232: P($$, $3); /* stack: context,name,constructor_value */
1.54 paf 233: O($$, OP_CONSTRUCT); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.20 paf 234: };
1.44 paf 235: name_expr_wdive:
236: name_expr_wdive_write
237: | name_expr_wdive_root
238: | name_expr_wdive_class;
1.28 paf 239: name_expr_wdive_write: name_expr_dive_code {
1.44 paf 240: $$=N(POOL);
1.23 paf 241: Array *diving_code=$1;
1.38 paf 242: String *first_name=SLA2S(diving_code);
1.23 paf 243: if(first_name && *first_name==SELF_NAME) {
1.54 paf 244: O($$, OP_WITH_SELF); /* stack: starting context */
1.23 paf 245: P($$, diving_code,
246: /* skip over... */
247: diving_code->size()>2?3/*OP_+string+get_element*/:2/*OP_+string*/);
248: } else {
1.54 paf 249: O($$, OP_WITH_WRITE); /* stack: starting context */
1.23 paf 250: P($$, diving_code);
251: }
252: /* diving code; stack: current context */
1.20 paf 253: };
1.28 paf 254: name_expr_wdive_root: ':' name_expr_dive_code {
1.25 paf 255: $$=N(POOL);
1.54 paf 256: O($$, OP_WITH_ROOT); /* stack: starting context */
1.9 paf 257: P($$, $2); /* diving code; stack: context,name */
1.1 paf 258: };
1.44 paf 259: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P($$, $2) };
1.20 paf 260:
1.1 paf 261: constructor_value:
1.55 paf 262: '[' any_constructor_code_value ']' { $$=$2 }
1.56 paf 263: | '(' any_expr ')' { $$=$2 }
1.52 paf 264: ;
1.55 paf 265: any_constructor_code_value:
266: empty_string_value /* optimized $var[] case */
1.52 paf 267: | STRING /* optimized $var[STRING] case */
1.55 paf 268: | constructor_code_value /* $var[something complex] */
1.1 paf 269: ;
1.55 paf 270: constructor_code_value: constructor_code {
1.25 paf 271: $$=N(POOL);
1.54 paf 272: O($$, OP_CREATE_EWPOOL); /* stack: empty write context */
1.69 ! paf 273: P($$, $1); /* some code that writes to that context */
1.54 paf 274: O($$, OP_REDUCE_EWPOOL); /* context=pop; stack: context.value() */
1.1 paf 275: };
1.55 paf 276: constructor_code: codes__excluding_sole_str_literal;
1.27 paf 277: codes__excluding_sole_str_literal: action | code codes { $$=$1; P($$, $2) };
278:
1.1 paf 279: /* call */
280:
1.66 paf 281: call: call_value {
282: $$=$1; /* stack: value */
283: O($$, OP_WRITE); /* value=pop; wcontext.write(value) */
284: };
285: call_value: '^' call_name store_params EON { /* ^field.$method{vasya} */
1.42 paf 286: $$=$2; /* with_xxx,diving code; stack: context,method_junction */
1.54 paf 287: O($$, OP_GET_METHOD_FRAME); /* stack: context,method_frame */
1.9 paf 288: P($$, $3); /* filling method_frame.store_params */
1.66 paf 289: O($$, OP_CALL); /* method_frame=pop; ncontext=pop; call(ncontext,method_frame) stack: value */
1.1 paf 290: };
291:
1.43 paf 292: call_name: name_without_curly_rdive;
1.38 paf 293:
1.9 paf 294: store_params: store_param | store_params store_param { $$=$1; P($$, $2) };
1.69 ! paf 295: store_param:
! 296: store_square_param
! 297: | store_round_param
! 298: | store_curly_param
1.31 paf 299: ;
1.69 ! paf 300: store_square_param: '[' store_code_param_parts ']' {$$=$2};
! 301: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.10 paf 302: store_curly_param: '{' maybe_codes '}' {
1.25 paf 303: $$=N(POOL);
1.29 paf 304: PCA($$, $2);
1.54 paf 305: O($$, OP_STORE_PARAM);
1.1 paf 306: };
1.69 ! paf 307: store_code_param_parts:
! 308: store_code_param_part
! 309: | store_code_param_parts ';' store_code_param_part { $$=$1; P($$, $3) }
! 310: ;
! 311: store_expr_param_parts:
! 312: store_expr_param_part
! 313: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P($$, $3) }
! 314: ;
! 315: store_code_param_part:
1.33 paf 316: empty /* optimized () case */
317: | STRING { /* optimized (STRING) case */
1.32 paf 318: $$=$1;
1.54 paf 319: O($$, OP_STORE_PARAM);
1.32 paf 320: }
1.55 paf 321: | constructor_code_value { /* (something complex) */
1.32 paf 322: $$=$1;
1.54 paf 323: O($$, OP_STORE_PARAM);
1.32 paf 324: }
325: ;
1.69 ! paf 326: store_expr_param_part: write_expr_value {
! 327: $$=N(POOL);
! 328: PCA($$, $1);
! 329: O($$, OP_STORE_PARAM);
! 330: };
! 331: write_expr_value: any_expr {
! 332: $$=$1;
! 333: O($$, OP_WRITE);
! 334: };
1.1 paf 335:
336: /* name */
337:
1.20 paf 338: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P($$, $2) };
1.1 paf 339:
1.9 paf 340: name_path: name_step | name_path name_step { $$=$1; P($$, $2) };
1.1 paf 341: name_step: name_advance1 '.';
342: name_advance1: name_expr_value {
343: /* stack: context */
344: $$=$1; /* stack: context,name */
1.54 paf 345: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 346: };
347: name_advance2: name_expr_value {
348: /* stack: context */
349: $$=$1; /* stack: context,name */
1.54 paf 350: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 351: }
1.4 paf 352: | STRING BOGUS
1.1 paf 353: ;
354: name_expr_value:
1.4 paf 355: STRING /* subname_is_const */
1.1 paf 356: | name_expr_subvar_value /* $subname_is_var_value */
357: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value[$...] */
358: ;
359: name_expr_subvar_value: '$' subvar_ref_name_rdive {
360: $$=$2;
1.54 paf 361: O($$, OP_GET_ELEMENT);
1.1 paf 362: };
1.4 paf 363: name_expr_with_subvar_value: STRING subvar_get_writes {
1.25 paf 364: $$=N(POOL);
1.54 paf 365: O($$, OP_CREATE_EWPOOL);
1.9 paf 366: P($$, $1);
1.54 paf 367: O($$, OP_WRITE);
1.9 paf 368: P($$, $2);
1.54 paf 369: O($$, OP_REDUCE_EWPOOL);
1.1 paf 370: };
1.18 paf 371: subvar_ref_name_rdive: subvar_ref_name_rdive_read | subvar_ref_name_rdive_root;
372: subvar_ref_name_rdive_read: STRING {
1.25 paf 373: $$=N(POOL);
1.54 paf 374: O($$, OP_WITH_READ);
1.9 paf 375: P($$, $1);
1.1 paf 376: };
1.18 paf 377: subvar_ref_name_rdive_root: ':' STRING {
1.25 paf 378: $$=N(POOL);
1.54 paf 379: O($$, OP_WITH_ROOT);
1.18 paf 380: P($$, $2);
381: };
1.9 paf 382: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P($$, $2) };
1.1 paf 383: subvar__get_write: '$' subvar_ref_name_rdive {
384: $$=$2;
1.54 paf 385: O($$, OP_GET_ELEMENT__WRITE);
1.42 paf 386: };
387:
1.44 paf 388: class_prefix: STRING ':' {
1.42 paf 389: String& name=*SLA2S($1);
390: VClass *vclass=static_cast<VClass *>(PC->request->classes().get(name));
391: if(!vclass) {
392: strcpy(PC->error, "'");
393: strcat(PC->error, name.cstr());
394: strcat(PC->error, "' class is undefined in call");
395: YYERROR;
396: }
1.48 paf 397: //TODO: убрать зависимость от статических @USE, сделать имя, а не ссылку
1.42 paf 398: $$=CL(vclass); // vclass
1.1 paf 399: };
400:
401:
402: /* with */
403:
404: with: '$' name_without_curly_rdive '{' codes '}' {
405: $$=$2;
1.54 paf 406: O($$, OP_CREATE_RWPOOL);
1.9 paf 407: P($$, $4);
1.54 paf 408: O($$, OP_REDUCE_RWPOOL);
409: O($$, OP_WRITE);
1.1 paf 410: };
1.53 paf 411:
1.56 paf 412: /* expr */
1.53 paf 413:
1.56 paf 414: any_expr:
1.55 paf 415: empty_double_value /* optimized $var() case */
1.62 paf 416: | optimized_expr /* $var(something) */
1.53 paf 417: ;
1.62 paf 418: optimized_expr: expr {
419: if(($$=$1)->size()==2) { // only one string literal in there?
420: change_string_literal_to_double_literal($$); // make that string literal Double
421: }
422: };
1.56 paf 423: expr:
1.62 paf 424: STRING
1.64 paf 425: | get_value
1.66 paf 426: | call_value
1.64 paf 427: | '"' string_inside_quotes_value '"' { $$ = $2; }
1.60 paf 428: | '(' expr ')' { $$ = $2; }
429: /* stack: operand // stack: @operand */
430: | '-' expr %prec NEG { $$=$2; O($$, OP_NEG) }
1.68 paf 431: | '~' expr { $$=$2; O($$, OP_INV) }
432: | '!' expr { $$=$2; O($$, OP_NOT) }
433: | "def" expr { $$=$2; O($$, OP_DEF) }
434: | "in" expr { $$=$2; O($$, OP_IN) }
435: | "-f" expr { $$=$2; O($$, OP_FEXISTS) }
1.60 paf 436: /* stack: a,b // stack: a@b */
437: | expr '-' expr { $$=$1; P($$, $3); O($$, OP_SUB) }
438: | expr '+' expr { $$=$1; P($$, $3); O($$, OP_ADD) }
439: | expr '*' expr { $$=$1; P($$, $3); O($$, OP_MUL) }
440: | expr '/' expr { $$=$1; P($$, $3); O($$, OP_DIV) }
441: | expr '%' expr { $$=$1; P($$, $3); O($$, OP_MOD) }
442: | expr '&' expr { $$=$1; P($$, $3); O($$, OP_BIN_AND) }
443: | expr '|' expr { $$=$1; P($$, $3); O($$, OP_BIN_OR) }
444: | expr '#' expr { $$=$1; P($$, $3); O($$, OP_BIN_XOR) }
445: | expr "&&" expr { $$=$1; P($$, $3); O($$, OP_LOG_AND) }
446: | expr "||" expr { $$=$1; P($$, $3); O($$, OP_LOG_OR) }
447: | expr "##" expr { $$=$1; P($$, $3); O($$, OP_LOG_XOR) }
448: | expr '<' expr { $$=$1; P($$, $3); O($$, OP_NUM_LT) }
449: | expr '>' expr { $$=$1; P($$, $3); O($$, OP_NUM_GT) }
450: | expr "<=" expr { $$=$1; P($$, $3); O($$, OP_NUM_LE) }
451: | expr ">=" expr { $$=$1; P($$, $3); O($$, OP_NUM_GE) }
452: | expr "==" expr { $$=$1; P($$, $3); O($$, OP_NUM_EQ) }
453: | expr "!=" expr { $$=$1; P($$, $3); O($$, OP_NUM_NE) }
1.61 paf 454: | expr "lt" expr { $$=$1; P($$, $3); O($$, OP_STR_LT) }
455: | expr "gt" expr { $$=$1; P($$, $3); O($$, OP_STR_GT) }
456: | expr "le" expr { $$=$1; P($$, $3); O($$, OP_STR_LE) }
457: | expr "ge" expr { $$=$1; P($$, $3); O($$, OP_STR_GE) }
458: | expr "eq" expr { $$=$1; P($$, $3); O($$, OP_STR_EQ) }
459: | expr "ne" expr { $$=$1; P($$, $3); O($$, OP_STR_NE) }
1.56 paf 460: ;
1.55 paf 461:
1.65 paf 462: string_inside_quotes_value: maybe_codes {
1.64 paf 463: $$=N(POOL);
464: O($$, OP_CREATE_SWPOOL); /* stack: empty write context */
1.69 ! paf 465: P($$, $1); /* some code that writes to that context */
1.64 paf 466: O($$, OP_REDUCE_SWPOOL); /* context=pop; stack: context.get_string() */
1.53 paf 467: };
1.1 paf 468:
1.27 paf 469: /* basics */
1.1 paf 470:
1.4 paf 471: write_str_literal: STRING {
1.59 paf 472: $$=$1;
473: O($$, OP_WRITE);
1.54 paf 474: };
475:
1.55 paf 476: empty_double_value: /* empty */ { $$=VL(NEW VDouble(POOL)) };
477: empty_string_value: /* empty */ { $$=VL(NEW VString(POOL)) };
1.25 paf 478: empty: /* empty */ { $$=N(POOL) };
1.1 paf 479:
480: %%
481:
482: /*
483: 000$111(2222)00
484: 000$111{3333}00
1.9 paf 485: $,^: push,=0
1.1 paf 486: 1:( { break=pop
487: 2:( ) pop
488: 3:{ } pop
489:
490: 000^111(2222)4444{33333}4000
1.9 paf 491: $,^: push,=0
1.1 paf 492: 1:( { break=pop
493: 2:( )=4
494: 3:{ }=4
495: 4:[^({]=pop
496: */
497:
498: int yylex(YYSTYPE *lvalp, void *pc) {
499: #define lexical_brackets_nestage PC->brackets_nestages[PC->sp]
1.48 paf 500: #define RC {result=c; goto break2; }
1.1 paf 501:
502: register int c;
503: int result;
504:
505: if(PC->pending_state) {
506: result=PC->pending_state;
507: PC->pending_state=0;
508: return result;
509: }
510:
1.9 paf 511: char *begin=PC->source;
512: char *end;
513: int begin_line=PC->line;
1.67 paf 514: int skip_analized=0;
1.50 paf 515: while(true) {
1.9 paf 516: c=*(end=(PC->source++));
1.1 paf 517:
1.4 paf 518: if(c=='\n') {
1.1 paf 519: PC->line++;
1.8 paf 520: PC->col=0;
1.10 paf 521: } else
1.4 paf 522: PC->col++;
1.1 paf 523:
1.48 paf 524: // escaping: ^^ ^$ ^; ^) ^} ^( ^{ ^"
525: if(c=='^')
526: switch(*PC->source) {
527: case '^': case '$': case ';':
528: case '[': case ']':
529: case '{': case '}':
530: case '"':
1.40 paf 531: if(end!=begin) {
532: // append piece till ^
533: PC->string->APPEND(begin, end-begin, PC->file, begin_line);
534: }
1.63 paf 535: // reset piece 'begin' position & line
1.40 paf 536: begin=PC->source; // ^
1.9 paf 537: begin_line=PC->line;
1.40 paf 538: // skip over ^ and _
1.50 paf 539: PC->source++; PC->col++;
1.40 paf 540: // skip analysis = forced literal
1.1 paf 541: continue;
542: }
543: switch(PC->ls) {
1.10 paf 544:
545: // USER'S = NOT OURS
1.1 paf 546: case LS_USER:
1.48 paf 547: switch(c) {
548: case '$':
1.10 paf 549: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 550: RC;
551: case '^':
552: push_LS(PC, LS_METHOD_NAME);
553: RC;
554: case '@':
555: if(PC->col==0+1) {
556: push_LS(PC, LS_DEF_NAME);
557: RC;
558: }
559: break;
1.1 paf 560: }
1.48 paf 561: break;
562:
563: // STRING IN EXPRESSION
564: case LS_EXPRESSION_STRING:
565: switch(c) {
566: case '"':
567: pop_LS(PC); //"abc".
568: RC;
569: case '$':
570: push_LS(PC, LS_VAR_NAME_SIMPLE);
571: RC;
572: case '^':
1.10 paf 573: push_LS(PC, LS_METHOD_NAME);
1.48 paf 574: RC;
1.10 paf 575: }
576: break;
577:
578: // METHOD DEFINITION
579: case LS_DEF_NAME:
1.48 paf 580: switch(c) {
581: case '[':
1.10 paf 582: PC->ls=LS_DEF_PARAMS;
1.48 paf 583: RC;
584: case '\n':
585: PC->ls=LS_DEF_SPECIAL_BODY;
586: RC;
1.10 paf 587: }
588: break;
1.48 paf 589:
1.10 paf 590: case LS_DEF_PARAMS:
1.48 paf 591: switch(c) {
592: case ';':
593: RC;
594: case ']':
1.10 paf 595: PC->ls=*PC->source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 596: RC;
1.49 paf 597: case '\n': // wrong. bailing out
1.10 paf 598: pop_LS(PC);
1.48 paf 599: RC;
1.10 paf 600: }
601: break;
1.48 paf 602:
1.10 paf 603: case LS_DEF_LOCALS:
1.48 paf 604: switch(c) {
605: case '[':
606: case ';':
607: RC;
608: case ']':
1.10 paf 609: PC->ls=LS_DEF_COMMENT;
1.48 paf 610: RC;
611: case '\n': // wrong. bailing out
1.10 paf 612: pop_LS(PC);
1.48 paf 613: RC;
1.10 paf 614: }
615: break;
1.48 paf 616:
1.10 paf 617: case LS_DEF_COMMENT:
618: if(c=='\n') {
619: pop_LS(PC);
1.48 paf 620: RC;
1.37 paf 621: }
622: break;
623:
1.48 paf 624: case LS_DEF_SPECIAL_BODY:
1.37 paf 625: if(c=='\n') {
1.48 paf 626: switch(*PC->source) {
627: case '@': case 0: // end of special_code
1.37 paf 628: pop_LS(PC);
1.48 paf 629: break;
630: }
631: RC;
632: }
633: break;
634:
635: // (EXPRESSION)
1.69 ! paf 636: case LS_VAR_ROUND:
! 637: case LS_METHOD_ROUND:
1.48 paf 638: switch(c) {
639: case ')':
640: if(--lexical_brackets_nestage==0)
1.69 ! paf 641: if(PC->ls==LS_METHOD_ROUND) // method round param ended
! 642: PC->ls=LS_METHOD_AFTER; // look for method end
! 643: else // PC->ls==LS_VAR_ROUND // variable constructor ended
! 644: pop_LS(PC); // return to normal life
1.48 paf 645: RC;
646: case '$':
1.69 ! paf 647: push_LS(PC, LS_EXPRESSION_VAR_NAME);
1.48 paf 648: RC;
649: case '^':
650: push_LS(PC, LS_METHOD_NAME);
651: RC;
652: case '(':
653: lexical_brackets_nestage++;
654: RC;
1.67 paf 655: case '-':
656: if(*PC->source=='f') { // -f
657: skip_analized=1;
658: result=FEXISTS;
659: } else
660: result=c;
661: goto break2;
662: case '+': case '*': case '/': case '%':
1.58 paf 663: case '~':
1.48 paf 664: case ';':
665: RC;
1.59 paf 666: case '&': case '|': case '#':
1.58 paf 667: if(*PC->source==c) { // && ||
1.59 paf 668: result=c=='#'?LXOR:c=='&'?LAND:LOR;
1.67 paf 669: skip_analized=1;
1.58 paf 670: } else
671: result=c;
672: goto break2;
673: case '<': case '>': case '=': case '!':
674: if(*PC->source=='=') { // <= >= == !=
1.67 paf 675: skip_analized=1;
1.58 paf 676: switch(c) {
677: case '<': result=NLE; break;
678: case '>': result=NGE; break;
679: case '=': result=NEQ; break;
680: case '!': result=NNE; break;
681: }
682: } else
683: result=c;
684: goto break2;
1.48 paf 685: case '"':
686: push_LS(PC, LS_EXPRESSION_STRING);
687: RC;
1.50 paf 688: case 'l': case 'g': case 'e': case 'n':
1.51 paf 689: if(end==begin) // right after whitespace
1.58 paf 690: switch(*PC->source) {
1.51 paf 691: // case '?': // ok [and bad cases, yacc would bark at them]
692: case 't': // lt gt [et nt]
1.62 paf 693: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1.67 paf 694: skip_analized=1;
1.58 paf 695: goto break2;
1.51 paf 696: case 'e': // le ge ne [ee]
1.58 paf 697: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1.67 paf 698: skip_analized=1;
1.58 paf 699: goto break2;
1.51 paf 700: case 'q': // eq [lq gq nq]
1.58 paf 701: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1.67 paf 702: skip_analized=1;
703: goto break2;
704: }
705: break;
706: case 'i':
707: if(end==begin) // right after whitespace
708: if(PC->source[0]=='n') { // in
709: skip_analized=1;
710: result=IN;
711: goto break2;
712: }
713: break;
714: case 'd':
715: if(end==begin) // right after whitespace
716: if(PC->source[0]=='e' && PC->source[1]=='f') { // def
717: skip_analized=2;
718: result=DEF;
1.58 paf 719: goto break2;
1.50 paf 720: }
1.48 paf 721: break;
722: case ' ': case '\t': case '\n':
1.63 paf 723: if(end!=begin) { // there were a string after previous operator?
724: result=0; // return that string
725: goto break2;
1.48 paf 726: }
1.63 paf 727: // that's a leading|traling space or after-operator-space
728: // ignoring it
729: // reset piece 'begin' position & line
1.58 paf 730: begin=PC->source; // after whitespace char
1.48 paf 731: begin_line=PC->line;
732: continue;
1.1 paf 733: }
734: break;
735:
1.10 paf 736: // VARIABLE GET/PUT/WITH
1.1 paf 737: case LS_VAR_NAME_SIMPLE:
1.69 ! paf 738: case LS_EXPRESSION_VAR_NAME:
! 739: if(PC->ls==LS_EXPRESSION_VAR_NAME) {
1.56 paf 740: // name in expr ends also before binary operators
1.48 paf 741: switch(c) {
742: case '+': case '-': case '*': case '/': case '%':
743: case '&': case '|':
744: case '<': case '>': case '=': case '!':
745: pop_LS(PC);
746: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
747: result=EON;
748: goto break2;
749: }
750: }
751: switch(c) {
752: case 0:
753: case ' ': case '\t': case '\n':
754: case ';':
1.64 paf 755: case ']': case '}': case ')': case '"':
1.1 paf 756: pop_LS(PC);
1.32 paf 757: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 758: result=EON;
1.1 paf 759: goto break2;
1.48 paf 760: case '[':
761: PC->ls=LS_VAR_SQUARE;
1.1 paf 762: lexical_brackets_nestage=1;
1.48 paf 763: RC;
764: case '{':
765: if(begin==end) { // ${name}, no need of EON, switching LS
766: PC->ls=LS_VAR_NAME_CURLY;
767: } else {
768: PC->ls=LS_VAR_CURLY;
769: lexical_brackets_nestage=1;
770: }
1.69 ! paf 771:
1.48 paf 772: RC;
773: case '(':
1.69 ! paf 774: PC->ls=LS_VAR_ROUND;
1.1 paf 775: lexical_brackets_nestage=1;
1.48 paf 776: RC;
777: case '.': // name part delim
778: case '$': // name part subvar
779: case ':': // ':name' or 'class:name'
780: RC;
1.1 paf 781: }
782: break;
1.48 paf 783:
1.1 paf 784: case LS_VAR_NAME_CURLY:
1.48 paf 785: switch(c) {
786: case '}': // ${name} finished, restoring LS
1.1 paf 787: pop_LS(PC);
1.48 paf 788: RC;
789: case '.': // name part delim
790: case '$': // name part subvar
791: case ':': // ':name' or 'class:name'
792: RC;
1.1 paf 793: }
794: break;
1.48 paf 795:
796: case LS_VAR_SQUARE:
797: switch(c) {
798: case '$':
1.10 paf 799: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 800: RC;
801: case '^':
1.10 paf 802: push_LS(PC, LS_METHOD_NAME);
1.48 paf 803: RC;
804: case ']':
1.1 paf 805: if(--lexical_brackets_nestage==0) {
806: pop_LS(PC);
1.48 paf 807: RC;
1.1 paf 808: }
1.48 paf 809: break;
810: case ';': // operator_or_fmt;value delim
811: RC;
812: case '[':
813: lexical_brackets_nestage++;
814: break;
1.1 paf 815: }
816: break;
1.48 paf 817:
1.1 paf 818: case LS_VAR_CURLY:
1.48 paf 819: switch(c) {
820: case '$':
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: pop_LS(PC);
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;
837:
1.10 paf 838: // METHOD CALL
1.1 paf 839: case LS_METHOD_NAME:
1.48 paf 840: switch(c) {
841: case '[':
842: PC->ls=LS_METHOD_SQUARE;
1.1 paf 843: lexical_brackets_nestage=1;
1.48 paf 844: RC;
845: case '{':
1.1 paf 846: PC->ls=LS_METHOD_CURLY;
847: lexical_brackets_nestage=1;
1.48 paf 848: RC;
1.69 ! paf 849: case '(':
! 850: PC->ls=LS_METHOD_ROUND;
! 851: lexical_brackets_nestage=1;
! 852: RC;
1.48 paf 853: case '.': // name part delim
854: case '$': // name part subvar
855: case ':': // ':name' or 'class:name'
856: RC;
1.1 paf 857: }
858: break;
1.48 paf 859:
860: case LS_METHOD_SQUARE:
861: switch(c) {
862: case '$':
1.10 paf 863: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 864: RC;
865: case '^':
1.10 paf 866: push_LS(PC, LS_METHOD_NAME);
1.48 paf 867: RC;
868: case ';': // param delim
869: RC;
870: case ']':
1.1 paf 871: if(--lexical_brackets_nestage==0) {
872: PC->ls=LS_METHOD_AFTER;
1.48 paf 873: RC;
1.1 paf 874: }
1.48 paf 875: break;
876: case '[':
1.1 paf 877: lexical_brackets_nestage++;
1.48 paf 878: break;
879: }
1.1 paf 880: break;
1.48 paf 881:
1.1 paf 882: case LS_METHOD_CURLY:
1.48 paf 883: switch(c) {
884: case '$':
1.10 paf 885: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 886: RC;
887: case '^':
1.10 paf 888: push_LS(PC, LS_METHOD_NAME);
1.48 paf 889: RC;
890: case '}':
1.1 paf 891: if(--lexical_brackets_nestage==0) {
892: PC->ls=LS_METHOD_AFTER;
1.48 paf 893: RC;
1.1 paf 894: }
1.48 paf 895: break;
896: case '{':
1.1 paf 897: lexical_brackets_nestage++;
1.48 paf 898: break;
899: }
1.1 paf 900: break;
1.48 paf 901:
1.1 paf 902: case LS_METHOD_AFTER:
1.69 ! paf 903: if(c=='[') {/* ][ }[ )[ */
1.48 paf 904: PC->ls=LS_METHOD_SQUARE;
1.1 paf 905: lexical_brackets_nestage=1;
1.48 paf 906: RC;
1.1 paf 907: }
1.69 ! paf 908: if(c=='{') {/* ]{ }{ ){ */
1.1 paf 909: PC->ls=LS_METHOD_CURLY;
1.69 ! paf 910: lexical_brackets_nestage=1;
! 911: RC;
! 912: }
! 913: if(c=='(') {/* ]( }( )( */
! 914: PC->ls=LS_METHOD_ROUND;
1.1 paf 915: lexical_brackets_nestage=1;
1.48 paf 916: RC;
1.1 paf 917: }
918: pop_LS(PC);
1.32 paf 919: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 920: result=EON;
1.1 paf 921: goto break2;
922: }
1.9 paf 923: if(c==0) {
1.1 paf 924: result=-1;
925: break;
926: }
927: }
928:
929: break2:
1.59 paf 930: if(end!=begin) { // there is last piece?
931: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
932: // strip last \n
1.10 paf 933: end--;
1.59 paf 934: }
935: if(end!=begin) { // last piece still alive?
936: // append it
1.30 paf 937: PC->string->APPEND(begin, end-begin, PC->file, begin_line/*, start_col*/);
938: }
1.59 paf 939: }
940: if(PC->string->size()) { // something accumulated?
1.17 paf 941: // create STRING value: array of OP_VALUE+vstring
1.55 paf 942: *lvalp=VL(NEW VString(*PC->string));
1.10 paf 943: // new pieces storage
1.25 paf 944: PC->string=NEW String(POOL);
1.58 paf 945: // make current result be pending for next call, return STRING for now
946: PC->pending_state=result; result=STRING;
947: }
1.67 paf 948: if(skip_analized) {
949: PC->source+=skip_analized; PC->col+=skip_analized;
1.1 paf 950: }
1.58 paf 951: return result;
1.1 paf 952: }
953:
1.9 paf 954: int real_yyerror(parse_control *pc, char *s) /* Called by yyparse on error */
1.1 paf 955: {
1.16 paf 956: //fprintf(stderr, "[%s]\n", s);
1.6 paf 957:
1.46 paf 958: strncpy(pc->error, s, MAX_STRING); // TODO: перепроверить с треклятым последним байтом
1.1 paf 959: return 1;
960: }
961:
962: static void
1.9 paf 963: yyprint(
1.1 paf 964: FILE *file,
965: int type,
966: YYSTYPE value)
967: {
1.9 paf 968: if(type==STRING)
1.38 paf 969: fprintf(file, " \"%s\"", SLA2S(value)->cstr());
1.1 paf 970: }
971:
E-mail:
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to compile.y CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [parser3project] / parser3 / src / main