Annotation of parser3/src/main/compile.y, revision 1.67
1.24 paf 1: /*
1.67 ! paf 2: $Id: compile.y,v 1.66 2001/03/07 10:45:49 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"
1.57 paf 75: %left NOT /* not: unary ! */
76:
77: /* bitwise */
1.59 paf 78: %left '#'
1.57 paf 79: %left '&' '|'
80: %left INV /* invertion: unary ~ */
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 */
1.9 paf 273: P($$, $1); /* some codes to that context */
1.54 paf 274: O($$, 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) };
1.1 paf 295: store_param: store_round_param | store_curly_param;
1.47 paf 296: store_round_param: '[' store_param_parts ']' {$$=$2};
1.31 paf 297: store_param_parts:
1.32 paf 298: store_param_part
299: | store_param_parts ';' store_param_part { $$=$1; P($$, $3) }
1.31 paf 300: ;
1.10 paf 301: store_curly_param: '{' maybe_codes '}' {
1.25 paf 302: $$=N(POOL);
1.29 paf 303: PCA($$, $2);
1.54 paf 304: O($$, OP_STORE_PARAM);
1.1 paf 305: };
1.32 paf 306: store_param_part:
1.33 paf 307: empty /* optimized () case */
308: | STRING { /* optimized (STRING) case */
1.32 paf 309: $$=$1;
1.54 paf 310: O($$, OP_STORE_PARAM);
1.32 paf 311: }
1.55 paf 312: | constructor_code_value { /* (something complex) */
1.32 paf 313: $$=$1;
1.54 paf 314: O($$, OP_STORE_PARAM);
1.32 paf 315: }
316: ;
1.1 paf 317:
318: /* name */
319:
1.20 paf 320: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P($$, $2) };
1.1 paf 321:
1.9 paf 322: name_path: name_step | name_path name_step { $$=$1; P($$, $2) };
1.1 paf 323: name_step: name_advance1 '.';
324: name_advance1: 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: };
329: name_advance2: name_expr_value {
330: /* stack: context */
331: $$=$1; /* stack: context,name */
1.54 paf 332: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 333: }
1.4 paf 334: | STRING BOGUS
1.1 paf 335: ;
336: name_expr_value:
1.4 paf 337: STRING /* subname_is_const */
1.1 paf 338: | name_expr_subvar_value /* $subname_is_var_value */
339: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value[$...] */
340: ;
341: name_expr_subvar_value: '$' subvar_ref_name_rdive {
342: $$=$2;
1.54 paf 343: O($$, OP_GET_ELEMENT);
1.1 paf 344: };
1.4 paf 345: name_expr_with_subvar_value: STRING subvar_get_writes {
1.25 paf 346: $$=N(POOL);
1.54 paf 347: O($$, OP_CREATE_EWPOOL);
1.9 paf 348: P($$, $1);
1.54 paf 349: O($$, OP_WRITE);
1.9 paf 350: P($$, $2);
1.54 paf 351: O($$, OP_REDUCE_EWPOOL);
1.1 paf 352: };
1.18 paf 353: subvar_ref_name_rdive: subvar_ref_name_rdive_read | subvar_ref_name_rdive_root;
354: subvar_ref_name_rdive_read: STRING {
1.25 paf 355: $$=N(POOL);
1.54 paf 356: O($$, OP_WITH_READ);
1.9 paf 357: P($$, $1);
1.1 paf 358: };
1.18 paf 359: subvar_ref_name_rdive_root: ':' STRING {
1.25 paf 360: $$=N(POOL);
1.54 paf 361: O($$, OP_WITH_ROOT);
1.18 paf 362: P($$, $2);
363: };
1.9 paf 364: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P($$, $2) };
1.1 paf 365: subvar__get_write: '$' subvar_ref_name_rdive {
366: $$=$2;
1.54 paf 367: O($$, OP_GET_ELEMENT__WRITE);
1.42 paf 368: };
369:
1.44 paf 370: class_prefix: STRING ':' {
1.42 paf 371: String& name=*SLA2S($1);
372: VClass *vclass=static_cast<VClass *>(PC->request->classes().get(name));
373: if(!vclass) {
374: strcpy(PC->error, "'");
375: strcat(PC->error, name.cstr());
376: strcat(PC->error, "' class is undefined in call");
377: YYERROR;
378: }
1.48 paf 379: //TODO: убрать зависимость от статических @USE, сделать имя, а не ссылку
1.42 paf 380: $$=CL(vclass); // vclass
1.1 paf 381: };
382:
383:
384: /* with */
385:
386: with: '$' name_without_curly_rdive '{' codes '}' {
387: $$=$2;
1.54 paf 388: O($$, OP_CREATE_RWPOOL);
1.9 paf 389: P($$, $4);
1.54 paf 390: O($$, OP_REDUCE_RWPOOL);
391: O($$, OP_WRITE);
1.1 paf 392: };
1.53 paf 393:
1.56 paf 394: /* expr */
1.53 paf 395:
1.56 paf 396: any_expr:
1.55 paf 397: empty_double_value /* optimized $var() case */
1.62 paf 398: | optimized_expr /* $var(something) */
1.53 paf 399: ;
1.62 paf 400: optimized_expr: expr {
401: if(($$=$1)->size()==2) { // only one string literal in there?
402: change_string_literal_to_double_literal($$); // make that string literal Double
403: }
404: };
1.56 paf 405: expr:
1.62 paf 406: STRING
1.64 paf 407: | get_value
1.66 paf 408: | call_value
1.64 paf 409: | '"' string_inside_quotes_value '"' { $$ = $2; }
1.60 paf 410: | '(' expr ')' { $$ = $2; }
411: /* stack: operand // stack: @operand */
412: | '-' expr %prec NEG { $$=$2; O($$, OP_NEG) }
413: | '~' expr %prec INV { $$=$2; O($$, OP_INV) }
414: | '!' expr %prec NOT { $$=$2; O($$, OP_NOT) }
1.67 ! paf 415: | "def" expr %prec DEF { $$=$2; O($$, OP_DEF) }
! 416: | "in" expr %prec IN { $$=$2; O($$, OP_IN) }
! 417: | "-f" expr %prec FEXISTS { $$=$2; O($$, OP_FEXISTS) }
1.60 paf 418: /* stack: a,b // stack: a@b */
419: | expr '-' expr { $$=$1; P($$, $3); O($$, OP_SUB) }
420: | expr '+' expr { $$=$1; P($$, $3); O($$, OP_ADD) }
421: | expr '*' expr { $$=$1; P($$, $3); O($$, OP_MUL) }
422: | expr '/' expr { $$=$1; P($$, $3); O($$, OP_DIV) }
423: | expr '%' expr { $$=$1; P($$, $3); O($$, OP_MOD) }
424: | expr '&' expr { $$=$1; P($$, $3); O($$, OP_BIN_AND) }
425: | expr '|' expr { $$=$1; P($$, $3); O($$, OP_BIN_OR) }
426: | expr '#' expr { $$=$1; P($$, $3); O($$, OP_BIN_XOR) }
427: | expr "&&" expr { $$=$1; P($$, $3); O($$, OP_LOG_AND) }
428: | expr "||" expr { $$=$1; P($$, $3); O($$, OP_LOG_OR) }
429: | expr "##" expr { $$=$1; P($$, $3); O($$, OP_LOG_XOR) }
430: | expr '<' expr { $$=$1; P($$, $3); O($$, OP_NUM_LT) }
431: | expr '>' expr { $$=$1; P($$, $3); O($$, OP_NUM_GT) }
432: | expr "<=" expr { $$=$1; P($$, $3); O($$, OP_NUM_LE) }
433: | expr ">=" expr { $$=$1; P($$, $3); O($$, OP_NUM_GE) }
434: | expr "==" expr { $$=$1; P($$, $3); O($$, OP_NUM_EQ) }
435: | expr "!=" expr { $$=$1; P($$, $3); O($$, OP_NUM_NE) }
1.61 paf 436: | expr "lt" expr { $$=$1; P($$, $3); O($$, OP_STR_LT) }
437: | expr "gt" expr { $$=$1; P($$, $3); O($$, OP_STR_GT) }
438: | expr "le" expr { $$=$1; P($$, $3); O($$, OP_STR_LE) }
439: | expr "ge" expr { $$=$1; P($$, $3); O($$, OP_STR_GE) }
440: | expr "eq" expr { $$=$1; P($$, $3); O($$, OP_STR_EQ) }
441: | expr "ne" expr { $$=$1; P($$, $3); O($$, OP_STR_NE) }
1.56 paf 442: ;
1.55 paf 443:
1.65 paf 444: string_inside_quotes_value: maybe_codes {
1.64 paf 445: $$=N(POOL);
446: O($$, OP_CREATE_SWPOOL); /* stack: empty write context */
1.65 paf 447: P($$, $1); /* some code that write to that context */
1.64 paf 448: O($$, OP_REDUCE_SWPOOL); /* context=pop; stack: context.get_string() */
1.53 paf 449: };
1.1 paf 450:
1.27 paf 451: /* basics */
1.1 paf 452:
1.4 paf 453: write_str_literal: STRING {
1.59 paf 454: $$=$1;
455: O($$, OP_WRITE);
1.54 paf 456: };
457:
1.55 paf 458: empty_double_value: /* empty */ { $$=VL(NEW VDouble(POOL)) };
459: empty_string_value: /* empty */ { $$=VL(NEW VString(POOL)) };
1.25 paf 460: empty: /* empty */ { $$=N(POOL) };
1.1 paf 461:
462: %%
463:
464: /*
465: 000$111(2222)00
466: 000$111{3333}00
1.9 paf 467: $,^: push,=0
1.1 paf 468: 1:( { break=pop
469: 2:( ) pop
470: 3:{ } pop
471:
472: 000^111(2222)4444{33333}4000
1.9 paf 473: $,^: push,=0
1.1 paf 474: 1:( { break=pop
475: 2:( )=4
476: 3:{ }=4
477: 4:[^({]=pop
478: */
479:
480: int yylex(YYSTYPE *lvalp, void *pc) {
481: #define lexical_brackets_nestage PC->brackets_nestages[PC->sp]
1.48 paf 482: #define RC {result=c; goto break2; }
1.1 paf 483:
484: register int c;
485: int result;
486:
487: if(PC->pending_state) {
488: result=PC->pending_state;
489: PC->pending_state=0;
490: return result;
491: }
492:
1.9 paf 493: char *begin=PC->source;
494: char *end;
495: int begin_line=PC->line;
1.67 ! paf 496: int skip_analized=0;
1.50 paf 497: while(true) {
1.9 paf 498: c=*(end=(PC->source++));
1.1 paf 499:
1.4 paf 500: if(c=='\n') {
1.1 paf 501: PC->line++;
1.8 paf 502: PC->col=0;
1.10 paf 503: } else
1.4 paf 504: PC->col++;
1.1 paf 505:
1.48 paf 506: // escaping: ^^ ^$ ^; ^) ^} ^( ^{ ^"
507: if(c=='^')
508: switch(*PC->source) {
509: case '^': case '$': case ';':
510: case '[': case ']':
511: case '{': case '}':
512: case '"':
1.40 paf 513: if(end!=begin) {
514: // append piece till ^
515: PC->string->APPEND(begin, end-begin, PC->file, begin_line);
516: }
1.63 paf 517: // reset piece 'begin' position & line
1.40 paf 518: begin=PC->source; // ^
1.9 paf 519: begin_line=PC->line;
1.40 paf 520: // skip over ^ and _
1.50 paf 521: PC->source++; PC->col++;
1.40 paf 522: // skip analysis = forced literal
1.1 paf 523: continue;
524: }
525: switch(PC->ls) {
1.10 paf 526:
527: // USER'S = NOT OURS
1.1 paf 528: case LS_USER:
1.48 paf 529: switch(c) {
530: case '$':
1.10 paf 531: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 532: RC;
533: case '^':
534: push_LS(PC, LS_METHOD_NAME);
535: RC;
536: case '@':
537: if(PC->col==0+1) {
538: push_LS(PC, LS_DEF_NAME);
539: RC;
540: }
541: break;
1.1 paf 542: }
1.48 paf 543: break;
544:
545: // STRING IN EXPRESSION
546: case LS_EXPRESSION_STRING:
547: switch(c) {
548: case '"':
549: pop_LS(PC); //"abc".
550: RC;
551: case '$':
552: push_LS(PC, LS_VAR_NAME_SIMPLE);
553: RC;
554: case '^':
1.10 paf 555: push_LS(PC, LS_METHOD_NAME);
1.48 paf 556: RC;
1.10 paf 557: }
558: break;
559:
560: // METHOD DEFINITION
561: case LS_DEF_NAME:
1.48 paf 562: switch(c) {
563: case '[':
1.10 paf 564: PC->ls=LS_DEF_PARAMS;
1.48 paf 565: RC;
566: case '\n':
567: PC->ls=LS_DEF_SPECIAL_BODY;
568: RC;
1.10 paf 569: }
570: break;
1.48 paf 571:
1.10 paf 572: case LS_DEF_PARAMS:
1.48 paf 573: switch(c) {
574: case ';':
575: RC;
576: case ']':
1.10 paf 577: PC->ls=*PC->source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 578: RC;
1.49 paf 579: case '\n': // wrong. bailing out
1.10 paf 580: pop_LS(PC);
1.48 paf 581: RC;
1.10 paf 582: }
583: break;
1.48 paf 584:
1.10 paf 585: case LS_DEF_LOCALS:
1.48 paf 586: switch(c) {
587: case '[':
588: case ';':
589: RC;
590: case ']':
1.10 paf 591: PC->ls=LS_DEF_COMMENT;
1.48 paf 592: RC;
593: case '\n': // wrong. bailing out
1.10 paf 594: pop_LS(PC);
1.48 paf 595: RC;
1.10 paf 596: }
597: break;
1.48 paf 598:
1.10 paf 599: case LS_DEF_COMMENT:
600: if(c=='\n') {
601: pop_LS(PC);
1.48 paf 602: RC;
1.37 paf 603: }
604: break;
605:
1.48 paf 606: case LS_DEF_SPECIAL_BODY:
1.37 paf 607: if(c=='\n') {
1.48 paf 608: switch(*PC->source) {
609: case '@': case 0: // end of special_code
1.37 paf 610: pop_LS(PC);
1.48 paf 611: break;
612: }
613: RC;
614: }
615: break;
616:
617: // (EXPRESSION)
618: case LS_EXPRESSION_BODY:
619: switch(c) {
620: case ')':
621: if(--lexical_brackets_nestage==0)
622: pop_LS(PC); //(EXPRESSION).
623: RC;
624: case '$':
625: push_LS(PC, LS_VAR_NAME_IN_EXPRESSION);
626: RC;
627: case '^':
628: push_LS(PC, LS_METHOD_NAME);
629: RC;
630: case '(':
631: lexical_brackets_nestage++;
632: RC;
1.67 ! paf 633: case '-':
! 634: if(*PC->source=='f') { // -f
! 635: skip_analized=1;
! 636: result=FEXISTS;
! 637: } else
! 638: result=c;
! 639: goto break2;
! 640: case '+': case '*': case '/': case '%':
1.58 paf 641: case '~':
1.48 paf 642: case ';':
643: RC;
1.59 paf 644: case '&': case '|': case '#':
1.58 paf 645: if(*PC->source==c) { // && ||
1.59 paf 646: result=c=='#'?LXOR:c=='&'?LAND:LOR;
1.67 ! paf 647: skip_analized=1;
1.58 paf 648: } else
649: result=c;
650: goto break2;
651: case '<': case '>': case '=': case '!':
652: if(*PC->source=='=') { // <= >= == !=
1.67 ! paf 653: skip_analized=1;
1.58 paf 654: switch(c) {
655: case '<': result=NLE; break;
656: case '>': result=NGE; break;
657: case '=': result=NEQ; break;
658: case '!': result=NNE; break;
659: }
660: } else
661: result=c;
662: goto break2;
1.48 paf 663: case '"':
664: push_LS(PC, LS_EXPRESSION_STRING);
665: RC;
1.50 paf 666: case 'l': case 'g': case 'e': case 'n':
1.51 paf 667: if(end==begin) // right after whitespace
1.58 paf 668: switch(*PC->source) {
1.51 paf 669: // case '?': // ok [and bad cases, yacc would bark at them]
670: case 't': // lt gt [et nt]
1.62 paf 671: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1.67 ! paf 672: skip_analized=1;
1.58 paf 673: goto break2;
1.51 paf 674: case 'e': // le ge ne [ee]
1.58 paf 675: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1.67 ! paf 676: skip_analized=1;
1.58 paf 677: goto break2;
1.51 paf 678: case 'q': // eq [lq gq nq]
1.58 paf 679: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1.67 ! paf 680: skip_analized=1;
! 681: goto break2;
! 682: }
! 683: break;
! 684: case 'i':
! 685: if(end==begin) // right after whitespace
! 686: if(PC->source[0]=='n') { // in
! 687: skip_analized=1;
! 688: result=IN;
! 689: goto break2;
! 690: }
! 691: break;
! 692: case 'd':
! 693: if(end==begin) // right after whitespace
! 694: if(PC->source[0]=='e' && PC->source[1]=='f') { // def
! 695: skip_analized=2;
! 696: result=DEF;
1.58 paf 697: goto break2;
1.50 paf 698: }
1.48 paf 699: break;
700: case ' ': case '\t': case '\n':
1.63 paf 701: if(end!=begin) { // there were a string after previous operator?
702: result=0; // return that string
703: goto break2;
1.48 paf 704: }
1.63 paf 705: // that's a leading|traling space or after-operator-space
706: // ignoring it
707: // reset piece 'begin' position & line
1.58 paf 708: begin=PC->source; // after whitespace char
1.48 paf 709: begin_line=PC->line;
710: continue;
1.1 paf 711: }
712: break;
713:
1.10 paf 714: // VARIABLE GET/PUT/WITH
1.1 paf 715: case LS_VAR_NAME_SIMPLE:
1.48 paf 716: case LS_VAR_NAME_IN_EXPRESSION:
717: if(PC->ls==LS_VAR_NAME_IN_EXPRESSION) {
1.56 paf 718: // name in expr ends also before binary operators
1.48 paf 719: switch(c) {
720: case '+': case '-': case '*': case '/': case '%':
721: case '&': case '|':
722: case '<': case '>': case '=': case '!':
723: pop_LS(PC);
724: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
725: result=EON;
726: goto break2;
727: }
728: }
729: switch(c) {
730: case 0:
731: case ' ': case '\t': case '\n':
732: case ';':
1.64 paf 733: case ']': case '}': case ')': case '"':
1.1 paf 734: pop_LS(PC);
1.32 paf 735: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 736: result=EON;
1.1 paf 737: goto break2;
1.48 paf 738: case '[':
739: PC->ls=LS_VAR_SQUARE;
1.1 paf 740: lexical_brackets_nestage=1;
1.48 paf 741: RC;
742: case '{':
743: if(begin==end) { // ${name}, no need of EON, switching LS
744: PC->ls=LS_VAR_NAME_CURLY;
745: } else {
746: PC->ls=LS_VAR_CURLY;
747: lexical_brackets_nestage=1;
748: }
749:
750: RC;
751: case '(':
752: PC->ls=LS_EXPRESSION_BODY;
1.1 paf 753: lexical_brackets_nestage=1;
1.48 paf 754: RC;
755: case '.': // name part delim
756: case '$': // name part subvar
757: case ':': // ':name' or 'class:name'
758: RC;
1.1 paf 759: }
760: break;
1.48 paf 761:
1.1 paf 762: case LS_VAR_NAME_CURLY:
1.48 paf 763: switch(c) {
764: case '}': // ${name} finished, restoring LS
1.1 paf 765: pop_LS(PC);
1.48 paf 766: RC;
767: case '.': // name part delim
768: case '$': // name part subvar
769: case ':': // ':name' or 'class:name'
770: RC;
1.1 paf 771: }
772: break;
1.48 paf 773:
774: case LS_VAR_SQUARE:
775: switch(c) {
776: case '$':
1.10 paf 777: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 778: RC;
779: case '^':
1.10 paf 780: push_LS(PC, LS_METHOD_NAME);
1.48 paf 781: RC;
782: case ']':
1.1 paf 783: if(--lexical_brackets_nestage==0) {
784: pop_LS(PC);
1.48 paf 785: RC;
1.1 paf 786: }
1.48 paf 787: break;
788: case ';': // operator_or_fmt;value delim
789: RC;
790: case '[':
791: lexical_brackets_nestage++;
792: break;
1.1 paf 793: }
794: break;
1.48 paf 795:
1.1 paf 796: case LS_VAR_CURLY:
1.48 paf 797: switch(c) {
798: case '$':
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 '{':
1.1 paf 811: lexical_brackets_nestage++;
1.48 paf 812: break;
813: }
1.1 paf 814: break;
815:
1.10 paf 816: // METHOD CALL
1.1 paf 817: case LS_METHOD_NAME:
1.48 paf 818: switch(c) {
819: case '[':
820: PC->ls=LS_METHOD_SQUARE;
1.1 paf 821: lexical_brackets_nestage=1;
1.48 paf 822: RC;
823: case '{':
1.1 paf 824: PC->ls=LS_METHOD_CURLY;
825: lexical_brackets_nestage=1;
1.48 paf 826: RC;
827: case '.': // name part delim
828: case '$': // name part subvar
829: case ':': // ':name' or 'class:name'
830: RC;
1.1 paf 831: }
832: break;
1.48 paf 833:
834: case LS_METHOD_SQUARE:
835: switch(c) {
836: case '$':
1.10 paf 837: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 838: RC;
839: case '^':
1.10 paf 840: push_LS(PC, LS_METHOD_NAME);
1.48 paf 841: RC;
842: case ';': // param delim
843: RC;
844: case ']':
1.1 paf 845: if(--lexical_brackets_nestage==0) {
846: PC->ls=LS_METHOD_AFTER;
1.48 paf 847: RC;
1.1 paf 848: }
1.48 paf 849: break;
850: case '[':
1.1 paf 851: lexical_brackets_nestage++;
1.48 paf 852: break;
853: }
1.1 paf 854: break;
1.48 paf 855:
1.1 paf 856: case LS_METHOD_CURLY:
1.48 paf 857: switch(c) {
858: case '$':
1.10 paf 859: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 860: RC;
861: case '^':
1.10 paf 862: push_LS(PC, LS_METHOD_NAME);
1.48 paf 863: RC;
864: case '}':
1.1 paf 865: if(--lexical_brackets_nestage==0) {
866: PC->ls=LS_METHOD_AFTER;
1.48 paf 867: RC;
1.1 paf 868: }
1.48 paf 869: break;
870: case '{':
1.1 paf 871: lexical_brackets_nestage++;
1.48 paf 872: break;
873: }
1.1 paf 874: break;
1.48 paf 875:
1.1 paf 876: case LS_METHOD_AFTER:
1.47 paf 877: if(c=='[') {/* )( }( */
1.48 paf 878: PC->ls=LS_METHOD_SQUARE;
1.1 paf 879: lexical_brackets_nestage=1;
1.48 paf 880: RC;
1.1 paf 881: }
882: if(c=='{') {/* ){ }{ */
883: PC->ls=LS_METHOD_CURLY;
884: lexical_brackets_nestage=1;
1.48 paf 885: RC;
1.1 paf 886: }
887: pop_LS(PC);
1.32 paf 888: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 889: result=EON;
1.1 paf 890: goto break2;
891: }
1.9 paf 892: if(c==0) {
1.1 paf 893: result=-1;
894: break;
895: }
896: }
897:
898: break2:
1.59 paf 899: if(end!=begin) { // there is last piece?
900: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
901: // strip last \n
1.10 paf 902: end--;
1.59 paf 903: }
904: if(end!=begin) { // last piece still alive?
905: // append it
1.30 paf 906: PC->string->APPEND(begin, end-begin, PC->file, begin_line/*, start_col*/);
907: }
1.59 paf 908: }
909: if(PC->string->size()) { // something accumulated?
1.17 paf 910: // create STRING value: array of OP_VALUE+vstring
1.55 paf 911: *lvalp=VL(NEW VString(*PC->string));
1.10 paf 912: // new pieces storage
1.25 paf 913: PC->string=NEW String(POOL);
1.58 paf 914: // make current result be pending for next call, return STRING for now
915: PC->pending_state=result; result=STRING;
916: }
1.67 ! paf 917: if(skip_analized) {
! 918: PC->source+=skip_analized; PC->col+=skip_analized;
1.1 paf 919: }
1.58 paf 920: return result;
1.1 paf 921: }
922:
1.9 paf 923: int real_yyerror(parse_control *pc, char *s) /* Called by yyparse on error */
1.1 paf 924: {
1.16 paf 925: //fprintf(stderr, "[%s]\n", s);
1.6 paf 926:
1.46 paf 927: strncpy(pc->error, s, MAX_STRING); // TODO: перепроверить с треклятым последним байтом
1.1 paf 928: return 1;
929: }
930:
931: static void
1.9 paf 932: yyprint(
1.1 paf 933: FILE *file,
934: int type,
935: YYSTYPE value)
936: {
1.9 paf 937: if(type==STRING)
1.38 paf 938: fprintf(file, " \"%s\"", SLA2S(value)->cstr());
1.1 paf 939: }
940:
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