Annotation of parser3/src/main/compile.y, revision 1.71
1.24 paf 1: /*
1.71 ! paf 2: $Id: compile.y,v 1.70 2001/03/08 09:31:47 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);
1.1 paf 305: };
1.69 paf 306: store_code_param_parts:
307: store_code_param_part
308: | store_code_param_parts ';' store_code_param_part { $$=$1; P($$, $3) }
309: ;
310: store_expr_param_parts:
311: store_expr_param_part
312: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P($$, $3) }
313: ;
314: store_code_param_part:
1.33 paf 315: empty /* optimized () case */
316: | STRING { /* optimized (STRING) case */
1.32 paf 317: $$=$1;
1.54 paf 318: O($$, OP_STORE_PARAM);
1.32 paf 319: }
1.55 paf 320: | constructor_code_value { /* (something complex) */
1.32 paf 321: $$=$1;
322: }
323: ;
1.69 paf 324: store_expr_param_part: write_expr_value {
325: $$=N(POOL);
326: PCA($$, $1);
327: };
328: write_expr_value: any_expr {
329: $$=$1;
330: O($$, OP_WRITE);
331: };
1.1 paf 332:
333: /* name */
334:
1.20 paf 335: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P($$, $2) };
1.1 paf 336:
1.9 paf 337: name_path: name_step | name_path name_step { $$=$1; P($$, $2) };
1.1 paf 338: name_step: name_advance1 '.';
339: name_advance1: name_expr_value {
340: /* stack: context */
341: $$=$1; /* stack: context,name */
1.54 paf 342: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 343: };
344: name_advance2: name_expr_value {
345: /* stack: context */
346: $$=$1; /* stack: context,name */
1.54 paf 347: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 348: }
1.4 paf 349: | STRING BOGUS
1.1 paf 350: ;
351: name_expr_value:
1.4 paf 352: STRING /* subname_is_const */
1.1 paf 353: | name_expr_subvar_value /* $subname_is_var_value */
354: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value[$...] */
355: ;
356: name_expr_subvar_value: '$' subvar_ref_name_rdive {
357: $$=$2;
1.54 paf 358: O($$, OP_GET_ELEMENT);
1.1 paf 359: };
1.4 paf 360: name_expr_with_subvar_value: STRING subvar_get_writes {
1.25 paf 361: $$=N(POOL);
1.54 paf 362: O($$, OP_CREATE_EWPOOL);
1.9 paf 363: P($$, $1);
1.54 paf 364: O($$, OP_WRITE);
1.9 paf 365: P($$, $2);
1.54 paf 366: O($$, OP_REDUCE_EWPOOL);
1.1 paf 367: };
1.18 paf 368: subvar_ref_name_rdive: subvar_ref_name_rdive_read | subvar_ref_name_rdive_root;
369: subvar_ref_name_rdive_read: STRING {
1.25 paf 370: $$=N(POOL);
1.54 paf 371: O($$, OP_WITH_READ);
1.9 paf 372: P($$, $1);
1.1 paf 373: };
1.18 paf 374: subvar_ref_name_rdive_root: ':' STRING {
1.25 paf 375: $$=N(POOL);
1.54 paf 376: O($$, OP_WITH_ROOT);
1.18 paf 377: P($$, $2);
378: };
1.9 paf 379: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P($$, $2) };
1.1 paf 380: subvar__get_write: '$' subvar_ref_name_rdive {
381: $$=$2;
1.54 paf 382: O($$, OP_GET_ELEMENT__WRITE);
1.42 paf 383: };
384:
1.44 paf 385: class_prefix: STRING ':' {
1.42 paf 386: String& name=*SLA2S($1);
387: VClass *vclass=static_cast<VClass *>(PC->request->classes().get(name));
388: if(!vclass) {
389: strcpy(PC->error, "'");
390: strcat(PC->error, name.cstr());
391: strcat(PC->error, "' class is undefined in call");
392: YYERROR;
393: }
1.48 paf 394: //TODO: убрать зависимость от статических @USE, сделать имя, а не ссылку
1.42 paf 395: $$=CL(vclass); // vclass
1.1 paf 396: };
397:
398:
399: /* with */
400:
401: with: '$' name_without_curly_rdive '{' codes '}' {
402: $$=$2;
1.54 paf 403: O($$, OP_CREATE_RWPOOL);
1.9 paf 404: P($$, $4);
1.54 paf 405: O($$, OP_REDUCE_RWPOOL);
406: O($$, OP_WRITE);
1.1 paf 407: };
1.53 paf 408:
1.56 paf 409: /* expr */
1.53 paf 410:
1.56 paf 411: any_expr:
1.55 paf 412: empty_double_value /* optimized $var() case */
1.62 paf 413: | optimized_expr /* $var(something) */
1.53 paf 414: ;
1.62 paf 415: optimized_expr: expr {
416: if(($$=$1)->size()==2) { // only one string literal in there?
417: change_string_literal_to_double_literal($$); // make that string literal Double
418: }
419: };
1.56 paf 420: expr:
1.62 paf 421: STRING
1.64 paf 422: | get_value
1.66 paf 423: | call_value
1.64 paf 424: | '"' string_inside_quotes_value '"' { $$ = $2; }
1.60 paf 425: | '(' expr ')' { $$ = $2; }
426: /* stack: operand // stack: @operand */
427: | '-' expr %prec NEG { $$=$2; O($$, OP_NEG) }
1.68 paf 428: | '~' expr { $$=$2; O($$, OP_INV) }
429: | '!' expr { $$=$2; O($$, OP_NOT) }
430: | "def" expr { $$=$2; O($$, OP_DEF) }
431: | "in" expr { $$=$2; O($$, OP_IN) }
432: | "-f" expr { $$=$2; O($$, OP_FEXISTS) }
1.60 paf 433: /* stack: a,b // stack: a@b */
434: | expr '-' expr { $$=$1; P($$, $3); O($$, OP_SUB) }
435: | expr '+' expr { $$=$1; P($$, $3); O($$, OP_ADD) }
436: | expr '*' expr { $$=$1; P($$, $3); O($$, OP_MUL) }
437: | expr '/' expr { $$=$1; P($$, $3); O($$, OP_DIV) }
438: | expr '%' expr { $$=$1; P($$, $3); O($$, OP_MOD) }
439: | expr '&' expr { $$=$1; P($$, $3); O($$, OP_BIN_AND) }
440: | expr '|' expr { $$=$1; P($$, $3); O($$, OP_BIN_OR) }
441: | expr '#' expr { $$=$1; P($$, $3); O($$, OP_BIN_XOR) }
442: | expr "&&" expr { $$=$1; P($$, $3); O($$, OP_LOG_AND) }
443: | expr "||" expr { $$=$1; P($$, $3); O($$, OP_LOG_OR) }
444: | expr "##" expr { $$=$1; P($$, $3); O($$, OP_LOG_XOR) }
445: | expr '<' expr { $$=$1; P($$, $3); O($$, OP_NUM_LT) }
446: | expr '>' expr { $$=$1; P($$, $3); O($$, OP_NUM_GT) }
447: | expr "<=" expr { $$=$1; P($$, $3); O($$, OP_NUM_LE) }
448: | expr ">=" expr { $$=$1; P($$, $3); O($$, OP_NUM_GE) }
449: | expr "==" expr { $$=$1; P($$, $3); O($$, OP_NUM_EQ) }
450: | expr "!=" expr { $$=$1; P($$, $3); O($$, OP_NUM_NE) }
1.61 paf 451: | expr "lt" expr { $$=$1; P($$, $3); O($$, OP_STR_LT) }
452: | expr "gt" expr { $$=$1; P($$, $3); O($$, OP_STR_GT) }
453: | expr "le" expr { $$=$1; P($$, $3); O($$, OP_STR_LE) }
454: | expr "ge" expr { $$=$1; P($$, $3); O($$, OP_STR_GE) }
455: | expr "eq" expr { $$=$1; P($$, $3); O($$, OP_STR_EQ) }
456: | expr "ne" expr { $$=$1; P($$, $3); O($$, OP_STR_NE) }
1.56 paf 457: ;
1.55 paf 458:
1.65 paf 459: string_inside_quotes_value: maybe_codes {
1.64 paf 460: $$=N(POOL);
461: O($$, OP_CREATE_SWPOOL); /* stack: empty write context */
1.69 paf 462: P($$, $1); /* some code that writes to that context */
1.64 paf 463: O($$, OP_REDUCE_SWPOOL); /* context=pop; stack: context.get_string() */
1.53 paf 464: };
1.1 paf 465:
1.27 paf 466: /* basics */
1.1 paf 467:
1.4 paf 468: write_str_literal: STRING {
1.59 paf 469: $$=$1;
470: O($$, OP_WRITE);
1.54 paf 471: };
472:
1.55 paf 473: empty_double_value: /* empty */ { $$=VL(NEW VDouble(POOL)) };
474: empty_string_value: /* empty */ { $$=VL(NEW VString(POOL)) };
1.25 paf 475: empty: /* empty */ { $$=N(POOL) };
1.1 paf 476:
477: %%
478:
479: /*
480: 000$111(2222)00
481: 000$111{3333}00
1.9 paf 482: $,^: push,=0
1.1 paf 483: 1:( { break=pop
484: 2:( ) pop
485: 3:{ } pop
486:
487: 000^111(2222)4444{33333}4000
1.9 paf 488: $,^: push,=0
1.1 paf 489: 1:( { break=pop
490: 2:( )=4
491: 3:{ }=4
492: 4:[^({]=pop
493: */
494:
495: int yylex(YYSTYPE *lvalp, void *pc) {
496: #define lexical_brackets_nestage PC->brackets_nestages[PC->sp]
1.48 paf 497: #define RC {result=c; goto break2; }
1.1 paf 498:
499: register int c;
500: int result;
501:
502: if(PC->pending_state) {
503: result=PC->pending_state;
504: PC->pending_state=0;
505: return result;
506: }
507:
1.9 paf 508: char *begin=PC->source;
509: char *end;
510: int begin_line=PC->line;
1.67 paf 511: int skip_analized=0;
1.50 paf 512: while(true) {
1.9 paf 513: c=*(end=(PC->source++));
1.1 paf 514:
1.4 paf 515: if(c=='\n') {
1.1 paf 516: PC->line++;
1.8 paf 517: PC->col=0;
1.10 paf 518: } else
1.4 paf 519: PC->col++;
1.1 paf 520:
1.48 paf 521: // escaping: ^^ ^$ ^; ^) ^} ^( ^{ ^"
522: if(c=='^')
523: switch(*PC->source) {
524: case '^': case '$': case ';':
525: case '[': case ']':
526: case '{': case '}':
527: case '"':
1.40 paf 528: if(end!=begin) {
529: // append piece till ^
530: PC->string->APPEND(begin, end-begin, PC->file, begin_line);
531: }
1.63 paf 532: // reset piece 'begin' position & line
1.40 paf 533: begin=PC->source; // ^
1.9 paf 534: begin_line=PC->line;
1.40 paf 535: // skip over ^ and _
1.50 paf 536: PC->source++; PC->col++;
1.40 paf 537: // skip analysis = forced literal
1.1 paf 538: continue;
539: }
540: switch(PC->ls) {
1.10 paf 541:
542: // USER'S = NOT OURS
1.1 paf 543: case LS_USER:
1.48 paf 544: switch(c) {
545: case '$':
1.10 paf 546: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 547: RC;
548: case '^':
549: push_LS(PC, LS_METHOD_NAME);
550: RC;
551: case '@':
552: if(PC->col==0+1) {
553: push_LS(PC, LS_DEF_NAME);
554: RC;
555: }
556: break;
1.1 paf 557: }
1.48 paf 558: break;
559:
560: // STRING IN EXPRESSION
561: case LS_EXPRESSION_STRING:
562: switch(c) {
563: case '"':
564: pop_LS(PC); //"abc".
565: RC;
566: case '$':
567: push_LS(PC, LS_VAR_NAME_SIMPLE);
568: RC;
569: case '^':
1.10 paf 570: push_LS(PC, LS_METHOD_NAME);
1.48 paf 571: RC;
1.10 paf 572: }
573: break;
574:
575: // METHOD DEFINITION
576: case LS_DEF_NAME:
1.48 paf 577: switch(c) {
578: case '[':
1.10 paf 579: PC->ls=LS_DEF_PARAMS;
1.48 paf 580: RC;
581: case '\n':
582: PC->ls=LS_DEF_SPECIAL_BODY;
583: RC;
1.10 paf 584: }
585: break;
1.48 paf 586:
1.10 paf 587: case LS_DEF_PARAMS:
1.48 paf 588: switch(c) {
589: case ';':
590: RC;
591: case ']':
1.10 paf 592: PC->ls=*PC->source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 593: RC;
1.49 paf 594: case '\n': // wrong. bailing out
1.10 paf 595: pop_LS(PC);
1.48 paf 596: RC;
1.10 paf 597: }
598: break;
1.48 paf 599:
1.10 paf 600: case LS_DEF_LOCALS:
1.48 paf 601: switch(c) {
602: case '[':
603: case ';':
604: RC;
605: case ']':
1.10 paf 606: PC->ls=LS_DEF_COMMENT;
1.48 paf 607: RC;
608: case '\n': // wrong. bailing out
1.10 paf 609: pop_LS(PC);
1.48 paf 610: RC;
1.10 paf 611: }
612: break;
1.48 paf 613:
1.10 paf 614: case LS_DEF_COMMENT:
615: if(c=='\n') {
616: pop_LS(PC);
1.48 paf 617: RC;
1.37 paf 618: }
619: break;
620:
1.48 paf 621: case LS_DEF_SPECIAL_BODY:
1.37 paf 622: if(c=='\n') {
1.48 paf 623: switch(*PC->source) {
624: case '@': case 0: // end of special_code
1.37 paf 625: pop_LS(PC);
1.48 paf 626: break;
627: }
628: RC;
629: }
630: break;
631:
632: // (EXPRESSION)
1.69 paf 633: case LS_VAR_ROUND:
634: case LS_METHOD_ROUND:
1.48 paf 635: switch(c) {
636: case ')':
637: if(--lexical_brackets_nestage==0)
1.69 paf 638: if(PC->ls==LS_METHOD_ROUND) // method round param ended
639: PC->ls=LS_METHOD_AFTER; // look for method end
640: else // PC->ls==LS_VAR_ROUND // variable constructor ended
641: pop_LS(PC); // return to normal life
1.48 paf 642: RC;
643: case '$':
1.69 paf 644: push_LS(PC, LS_EXPRESSION_VAR_NAME);
1.48 paf 645: RC;
646: case '^':
647: push_LS(PC, LS_METHOD_NAME);
648: RC;
649: case '(':
650: lexical_brackets_nestage++;
651: RC;
1.67 paf 652: case '-':
653: if(*PC->source=='f') { // -f
654: skip_analized=1;
655: result=FEXISTS;
656: } else
657: result=c;
658: goto break2;
659: case '+': case '*': case '/': case '%':
1.58 paf 660: case '~':
1.48 paf 661: case ';':
662: RC;
1.59 paf 663: case '&': case '|': case '#':
1.58 paf 664: if(*PC->source==c) { // && ||
1.59 paf 665: result=c=='#'?LXOR:c=='&'?LAND:LOR;
1.67 paf 666: skip_analized=1;
1.58 paf 667: } else
668: result=c;
669: goto break2;
670: case '<': case '>': case '=': case '!':
671: if(*PC->source=='=') { // <= >= == !=
1.67 paf 672: skip_analized=1;
1.58 paf 673: switch(c) {
674: case '<': result=NLE; break;
675: case '>': result=NGE; break;
676: case '=': result=NEQ; break;
677: case '!': result=NNE; break;
678: }
679: } else
680: result=c;
681: goto break2;
1.48 paf 682: case '"':
683: push_LS(PC, LS_EXPRESSION_STRING);
684: RC;
1.50 paf 685: case 'l': case 'g': case 'e': case 'n':
1.51 paf 686: if(end==begin) // right after whitespace
1.58 paf 687: switch(*PC->source) {
1.51 paf 688: // case '?': // ok [and bad cases, yacc would bark at them]
689: case 't': // lt gt [et nt]
1.62 paf 690: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1.67 paf 691: skip_analized=1;
1.58 paf 692: goto break2;
1.51 paf 693: case 'e': // le ge ne [ee]
1.58 paf 694: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1.67 paf 695: skip_analized=1;
1.58 paf 696: goto break2;
1.51 paf 697: case 'q': // eq [lq gq nq]
1.58 paf 698: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1.67 paf 699: skip_analized=1;
700: goto break2;
701: }
702: break;
703: case 'i':
704: if(end==begin) // right after whitespace
705: if(PC->source[0]=='n') { // in
706: skip_analized=1;
707: result=IN;
708: goto break2;
709: }
710: break;
711: case 'd':
712: if(end==begin) // right after whitespace
713: if(PC->source[0]=='e' && PC->source[1]=='f') { // def
714: skip_analized=2;
715: result=DEF;
1.58 paf 716: goto break2;
1.50 paf 717: }
1.48 paf 718: break;
719: case ' ': case '\t': case '\n':
1.63 paf 720: if(end!=begin) { // there were a string after previous operator?
721: result=0; // return that string
722: goto break2;
1.48 paf 723: }
1.63 paf 724: // that's a leading|traling space or after-operator-space
725: // ignoring it
726: // reset piece 'begin' position & line
1.58 paf 727: begin=PC->source; // after whitespace char
1.48 paf 728: begin_line=PC->line;
729: continue;
1.1 paf 730: }
731: break;
732:
1.10 paf 733: // VARIABLE GET/PUT/WITH
1.1 paf 734: case LS_VAR_NAME_SIMPLE:
1.69 paf 735: case LS_EXPRESSION_VAR_NAME:
736: if(PC->ls==LS_EXPRESSION_VAR_NAME) {
1.56 paf 737: // name in expr ends also before binary operators
1.48 paf 738: switch(c) {
739: case '+': case '-': case '*': case '/': case '%':
740: case '&': case '|':
741: case '<': case '>': case '=': case '!':
742: pop_LS(PC);
743: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
744: result=EON;
745: goto break2;
746: }
747: }
748: switch(c) {
749: case 0:
750: case ' ': case '\t': case '\n':
751: case ';':
1.64 paf 752: case ']': case '}': case ')': case '"':
1.1 paf 753: pop_LS(PC);
1.32 paf 754: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 755: result=EON;
1.1 paf 756: goto break2;
1.48 paf 757: case '[':
758: PC->ls=LS_VAR_SQUARE;
1.1 paf 759: lexical_brackets_nestage=1;
1.48 paf 760: RC;
761: case '{':
762: if(begin==end) { // ${name}, no need of EON, switching LS
763: PC->ls=LS_VAR_NAME_CURLY;
764: } else {
765: PC->ls=LS_VAR_CURLY;
766: lexical_brackets_nestage=1;
767: }
1.69 paf 768:
1.48 paf 769: RC;
770: case '(':
1.69 paf 771: PC->ls=LS_VAR_ROUND;
1.1 paf 772: lexical_brackets_nestage=1;
1.48 paf 773: RC;
774: case '.': // name part delim
775: case '$': // name part subvar
776: case ':': // ':name' or 'class:name'
777: RC;
1.1 paf 778: }
779: break;
1.48 paf 780:
1.1 paf 781: case LS_VAR_NAME_CURLY:
1.48 paf 782: switch(c) {
783: case '}': // ${name} finished, restoring LS
1.1 paf 784: pop_LS(PC);
1.48 paf 785: RC;
786: case '.': // name part delim
787: case '$': // name part subvar
788: case ':': // ':name' or 'class:name'
789: RC;
1.1 paf 790: }
791: break;
1.48 paf 792:
793: case LS_VAR_SQUARE:
794: switch(c) {
795: case '$':
1.10 paf 796: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 797: RC;
798: case '^':
1.10 paf 799: push_LS(PC, LS_METHOD_NAME);
1.48 paf 800: RC;
801: case ']':
1.1 paf 802: if(--lexical_brackets_nestage==0) {
803: pop_LS(PC);
1.48 paf 804: RC;
1.1 paf 805: }
1.48 paf 806: break;
807: case ';': // operator_or_fmt;value delim
808: RC;
809: case '[':
810: lexical_brackets_nestage++;
811: break;
1.1 paf 812: }
813: break;
1.48 paf 814:
1.1 paf 815: case LS_VAR_CURLY:
1.48 paf 816: switch(c) {
817: case '$':
1.10 paf 818: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 819: RC;
820: case '^':
1.10 paf 821: push_LS(PC, LS_METHOD_NAME);
1.48 paf 822: RC;
823: case '}':
1.1 paf 824: if(--lexical_brackets_nestage==0) {
825: pop_LS(PC);
1.48 paf 826: RC;
1.1 paf 827: }
1.48 paf 828: break;
829: case '{':
1.1 paf 830: lexical_brackets_nestage++;
1.48 paf 831: break;
832: }
1.1 paf 833: break;
834:
1.10 paf 835: // METHOD CALL
1.1 paf 836: case LS_METHOD_NAME:
1.48 paf 837: switch(c) {
838: case '[':
839: PC->ls=LS_METHOD_SQUARE;
1.1 paf 840: lexical_brackets_nestage=1;
1.48 paf 841: RC;
842: case '{':
1.1 paf 843: PC->ls=LS_METHOD_CURLY;
844: lexical_brackets_nestage=1;
1.48 paf 845: RC;
1.69 paf 846: case '(':
847: PC->ls=LS_METHOD_ROUND;
848: lexical_brackets_nestage=1;
849: RC;
1.48 paf 850: case '.': // name part delim
851: case '$': // name part subvar
852: case ':': // ':name' or 'class:name'
853: RC;
1.1 paf 854: }
855: break;
1.48 paf 856:
857: case LS_METHOD_SQUARE:
858: switch(c) {
859: case '$':
1.10 paf 860: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 861: RC;
862: case '^':
1.10 paf 863: push_LS(PC, LS_METHOD_NAME);
1.48 paf 864: RC;
865: case ';': // param delim
866: RC;
867: case ']':
1.1 paf 868: if(--lexical_brackets_nestage==0) {
869: PC->ls=LS_METHOD_AFTER;
1.48 paf 870: RC;
1.1 paf 871: }
1.48 paf 872: break;
873: case '[':
1.1 paf 874: lexical_brackets_nestage++;
1.48 paf 875: break;
876: }
1.1 paf 877: break;
1.48 paf 878:
1.1 paf 879: case LS_METHOD_CURLY:
1.48 paf 880: switch(c) {
881: case '$':
1.10 paf 882: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 883: RC;
884: case '^':
1.10 paf 885: push_LS(PC, LS_METHOD_NAME);
1.48 paf 886: RC;
887: case '}':
1.1 paf 888: if(--lexical_brackets_nestage==0) {
889: PC->ls=LS_METHOD_AFTER;
1.48 paf 890: RC;
1.1 paf 891: }
1.48 paf 892: break;
893: case '{':
1.1 paf 894: lexical_brackets_nestage++;
1.48 paf 895: break;
896: }
1.1 paf 897: break;
1.48 paf 898:
1.1 paf 899: case LS_METHOD_AFTER:
1.69 paf 900: if(c=='[') {/* ][ }[ )[ */
1.48 paf 901: PC->ls=LS_METHOD_SQUARE;
1.1 paf 902: lexical_brackets_nestage=1;
1.48 paf 903: RC;
1.1 paf 904: }
1.69 paf 905: if(c=='{') {/* ]{ }{ ){ */
1.1 paf 906: PC->ls=LS_METHOD_CURLY;
1.69 paf 907: lexical_brackets_nestage=1;
908: RC;
909: }
910: if(c=='(') {/* ]( }( )( */
911: PC->ls=LS_METHOD_ROUND;
1.1 paf 912: lexical_brackets_nestage=1;
1.48 paf 913: RC;
1.1 paf 914: }
915: pop_LS(PC);
1.32 paf 916: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 917: result=EON;
1.1 paf 918: goto break2;
919: }
1.9 paf 920: if(c==0) {
1.1 paf 921: result=-1;
922: break;
923: }
924: }
925:
926: break2:
1.59 paf 927: if(end!=begin) { // there is last piece?
928: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
929: // strip last \n
1.10 paf 930: end--;
1.59 paf 931: }
932: if(end!=begin) { // last piece still alive?
933: // append it
1.30 paf 934: PC->string->APPEND(begin, end-begin, PC->file, begin_line/*, start_col*/);
935: }
1.59 paf 936: }
937: if(PC->string->size()) { // something accumulated?
1.17 paf 938: // create STRING value: array of OP_VALUE+vstring
1.55 paf 939: *lvalp=VL(NEW VString(*PC->string));
1.10 paf 940: // new pieces storage
1.25 paf 941: PC->string=NEW String(POOL);
1.58 paf 942: // make current result be pending for next call, return STRING for now
943: PC->pending_state=result; result=STRING;
944: }
1.67 paf 945: if(skip_analized) {
946: PC->source+=skip_analized; PC->col+=skip_analized;
1.1 paf 947: }
1.58 paf 948: return result;
1.1 paf 949: }
950:
1.9 paf 951: int real_yyerror(parse_control *pc, char *s) /* Called by yyparse on error */
1.1 paf 952: {
1.16 paf 953: //fprintf(stderr, "[%s]\n", s);
1.6 paf 954:
1.46 paf 955: strncpy(pc->error, s, MAX_STRING); // TODO: перепроверить с треклятым последним байтом
1.1 paf 956: return 1;
957: }
958:
959: static void
1.9 paf 960: yyprint(
1.1 paf 961: FILE *file,
962: int type,
963: YYSTYPE value)
964: {
1.9 paf 965: if(type==STRING)
1.38 paf 966: fprintf(file, " \"%s\"", SLA2S(value)->cstr());
1.1 paf 967: }
968:
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