Annotation of parser3/src/main/compile.y, revision 1.70
1.24 paf 1: /*
1.70 ! paf 2: $Id: compile.y,v 1.69 2001/03/07 12:11:29 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($$, $1);
327: O($$, OP_STORE_PARAM);
328: };
329: write_expr_value: any_expr {
330: $$=$1;
331: O($$, OP_WRITE);
332: };
1.1 paf 333:
334: /* name */
335:
1.20 paf 336: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P($$, $2) };
1.1 paf 337:
1.9 paf 338: name_path: name_step | name_path name_step { $$=$1; P($$, $2) };
1.1 paf 339: name_step: name_advance1 '.';
340: name_advance1: name_expr_value {
341: /* stack: context */
342: $$=$1; /* stack: context,name */
1.54 paf 343: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 344: };
345: name_advance2: name_expr_value {
346: /* stack: context */
347: $$=$1; /* stack: context,name */
1.54 paf 348: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 349: }
1.4 paf 350: | STRING BOGUS
1.1 paf 351: ;
352: name_expr_value:
1.4 paf 353: STRING /* subname_is_const */
1.1 paf 354: | name_expr_subvar_value /* $subname_is_var_value */
355: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value[$...] */
356: ;
357: name_expr_subvar_value: '$' subvar_ref_name_rdive {
358: $$=$2;
1.54 paf 359: O($$, OP_GET_ELEMENT);
1.1 paf 360: };
1.4 paf 361: name_expr_with_subvar_value: STRING subvar_get_writes {
1.25 paf 362: $$=N(POOL);
1.54 paf 363: O($$, OP_CREATE_EWPOOL);
1.9 paf 364: P($$, $1);
1.54 paf 365: O($$, OP_WRITE);
1.9 paf 366: P($$, $2);
1.54 paf 367: O($$, OP_REDUCE_EWPOOL);
1.1 paf 368: };
1.18 paf 369: subvar_ref_name_rdive: subvar_ref_name_rdive_read | subvar_ref_name_rdive_root;
370: subvar_ref_name_rdive_read: STRING {
1.25 paf 371: $$=N(POOL);
1.54 paf 372: O($$, OP_WITH_READ);
1.9 paf 373: P($$, $1);
1.1 paf 374: };
1.18 paf 375: subvar_ref_name_rdive_root: ':' STRING {
1.25 paf 376: $$=N(POOL);
1.54 paf 377: O($$, OP_WITH_ROOT);
1.18 paf 378: P($$, $2);
379: };
1.9 paf 380: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P($$, $2) };
1.1 paf 381: subvar__get_write: '$' subvar_ref_name_rdive {
382: $$=$2;
1.54 paf 383: O($$, OP_GET_ELEMENT__WRITE);
1.42 paf 384: };
385:
1.44 paf 386: class_prefix: STRING ':' {
1.42 paf 387: String& name=*SLA2S($1);
388: VClass *vclass=static_cast<VClass *>(PC->request->classes().get(name));
389: if(!vclass) {
390: strcpy(PC->error, "'");
391: strcat(PC->error, name.cstr());
392: strcat(PC->error, "' class is undefined in call");
393: YYERROR;
394: }
1.48 paf 395: //TODO: убрать зависимость от статических @USE, сделать имя, а не ссылку
1.42 paf 396: $$=CL(vclass); // vclass
1.1 paf 397: };
398:
399:
400: /* with */
401:
402: with: '$' name_without_curly_rdive '{' codes '}' {
403: $$=$2;
1.54 paf 404: O($$, OP_CREATE_RWPOOL);
1.9 paf 405: P($$, $4);
1.54 paf 406: O($$, OP_REDUCE_RWPOOL);
407: O($$, OP_WRITE);
1.1 paf 408: };
1.53 paf 409:
1.56 paf 410: /* expr */
1.53 paf 411:
1.56 paf 412: any_expr:
1.55 paf 413: empty_double_value /* optimized $var() case */
1.62 paf 414: | optimized_expr /* $var(something) */
1.53 paf 415: ;
1.62 paf 416: optimized_expr: expr {
417: if(($$=$1)->size()==2) { // only one string literal in there?
418: change_string_literal_to_double_literal($$); // make that string literal Double
419: }
420: };
1.56 paf 421: expr:
1.62 paf 422: STRING
1.64 paf 423: | get_value
1.66 paf 424: | call_value
1.64 paf 425: | '"' string_inside_quotes_value '"' { $$ = $2; }
1.60 paf 426: | '(' expr ')' { $$ = $2; }
427: /* stack: operand // stack: @operand */
428: | '-' expr %prec NEG { $$=$2; O($$, OP_NEG) }
1.68 paf 429: | '~' expr { $$=$2; O($$, OP_INV) }
430: | '!' expr { $$=$2; O($$, OP_NOT) }
431: | "def" expr { $$=$2; O($$, OP_DEF) }
432: | "in" expr { $$=$2; O($$, OP_IN) }
433: | "-f" expr { $$=$2; O($$, OP_FEXISTS) }
1.60 paf 434: /* stack: a,b // stack: a@b */
435: | expr '-' expr { $$=$1; P($$, $3); O($$, OP_SUB) }
436: | expr '+' expr { $$=$1; P($$, $3); O($$, OP_ADD) }
437: | expr '*' expr { $$=$1; P($$, $3); O($$, OP_MUL) }
438: | expr '/' expr { $$=$1; P($$, $3); O($$, OP_DIV) }
439: | expr '%' expr { $$=$1; P($$, $3); O($$, OP_MOD) }
440: | expr '&' expr { $$=$1; P($$, $3); O($$, OP_BIN_AND) }
441: | expr '|' expr { $$=$1; P($$, $3); O($$, OP_BIN_OR) }
442: | expr '#' expr { $$=$1; P($$, $3); O($$, OP_BIN_XOR) }
443: | expr "&&" expr { $$=$1; P($$, $3); O($$, OP_LOG_AND) }
444: | expr "||" expr { $$=$1; P($$, $3); O($$, OP_LOG_OR) }
445: | expr "##" expr { $$=$1; P($$, $3); O($$, OP_LOG_XOR) }
446: | expr '<' expr { $$=$1; P($$, $3); O($$, OP_NUM_LT) }
447: | expr '>' expr { $$=$1; P($$, $3); O($$, OP_NUM_GT) }
448: | expr "<=" expr { $$=$1; P($$, $3); O($$, OP_NUM_LE) }
449: | expr ">=" expr { $$=$1; P($$, $3); O($$, OP_NUM_GE) }
450: | expr "==" expr { $$=$1; P($$, $3); O($$, OP_NUM_EQ) }
451: | expr "!=" expr { $$=$1; P($$, $3); O($$, OP_NUM_NE) }
1.61 paf 452: | expr "lt" expr { $$=$1; P($$, $3); O($$, OP_STR_LT) }
453: | expr "gt" expr { $$=$1; P($$, $3); O($$, OP_STR_GT) }
454: | expr "le" expr { $$=$1; P($$, $3); O($$, OP_STR_LE) }
455: | expr "ge" expr { $$=$1; P($$, $3); O($$, OP_STR_GE) }
456: | expr "eq" expr { $$=$1; P($$, $3); O($$, OP_STR_EQ) }
457: | expr "ne" expr { $$=$1; P($$, $3); O($$, OP_STR_NE) }
1.56 paf 458: ;
1.55 paf 459:
1.65 paf 460: string_inside_quotes_value: maybe_codes {
1.64 paf 461: $$=N(POOL);
462: O($$, OP_CREATE_SWPOOL); /* stack: empty write context */
1.69 paf 463: P($$, $1); /* some code that writes to that context */
1.64 paf 464: O($$, OP_REDUCE_SWPOOL); /* context=pop; stack: context.get_string() */
1.53 paf 465: };
1.1 paf 466:
1.27 paf 467: /* basics */
1.1 paf 468:
1.4 paf 469: write_str_literal: STRING {
1.59 paf 470: $$=$1;
471: O($$, OP_WRITE);
1.54 paf 472: };
473:
1.55 paf 474: empty_double_value: /* empty */ { $$=VL(NEW VDouble(POOL)) };
475: empty_string_value: /* empty */ { $$=VL(NEW VString(POOL)) };
1.25 paf 476: empty: /* empty */ { $$=N(POOL) };
1.1 paf 477:
478: %%
479:
480: /*
481: 000$111(2222)00
482: 000$111{3333}00
1.9 paf 483: $,^: push,=0
1.1 paf 484: 1:( { break=pop
485: 2:( ) pop
486: 3:{ } pop
487:
488: 000^111(2222)4444{33333}4000
1.9 paf 489: $,^: push,=0
1.1 paf 490: 1:( { break=pop
491: 2:( )=4
492: 3:{ }=4
493: 4:[^({]=pop
494: */
495:
496: int yylex(YYSTYPE *lvalp, void *pc) {
497: #define lexical_brackets_nestage PC->brackets_nestages[PC->sp]
1.48 paf 498: #define RC {result=c; goto break2; }
1.1 paf 499:
500: register int c;
501: int result;
502:
503: if(PC->pending_state) {
504: result=PC->pending_state;
505: PC->pending_state=0;
506: return result;
507: }
508:
1.9 paf 509: char *begin=PC->source;
510: char *end;
511: int begin_line=PC->line;
1.67 paf 512: int skip_analized=0;
1.50 paf 513: while(true) {
1.9 paf 514: c=*(end=(PC->source++));
1.1 paf 515:
1.4 paf 516: if(c=='\n') {
1.1 paf 517: PC->line++;
1.8 paf 518: PC->col=0;
1.10 paf 519: } else
1.4 paf 520: PC->col++;
1.1 paf 521:
1.48 paf 522: // escaping: ^^ ^$ ^; ^) ^} ^( ^{ ^"
523: if(c=='^')
524: switch(*PC->source) {
525: case '^': case '$': case ';':
526: case '[': case ']':
527: case '{': case '}':
528: case '"':
1.40 paf 529: if(end!=begin) {
530: // append piece till ^
531: PC->string->APPEND(begin, end-begin, PC->file, begin_line);
532: }
1.63 paf 533: // reset piece 'begin' position & line
1.40 paf 534: begin=PC->source; // ^
1.9 paf 535: begin_line=PC->line;
1.40 paf 536: // skip over ^ and _
1.50 paf 537: PC->source++; PC->col++;
1.40 paf 538: // skip analysis = forced literal
1.1 paf 539: continue;
540: }
541: switch(PC->ls) {
1.10 paf 542:
543: // USER'S = NOT OURS
1.1 paf 544: case LS_USER:
1.48 paf 545: switch(c) {
546: case '$':
1.10 paf 547: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 548: RC;
549: case '^':
550: push_LS(PC, LS_METHOD_NAME);
551: RC;
552: case '@':
553: if(PC->col==0+1) {
554: push_LS(PC, LS_DEF_NAME);
555: RC;
556: }
557: break;
1.1 paf 558: }
1.48 paf 559: break;
560:
561: // STRING IN EXPRESSION
562: case LS_EXPRESSION_STRING:
563: switch(c) {
564: case '"':
565: pop_LS(PC); //"abc".
566: RC;
567: case '$':
568: push_LS(PC, LS_VAR_NAME_SIMPLE);
569: RC;
570: case '^':
1.10 paf 571: push_LS(PC, LS_METHOD_NAME);
1.48 paf 572: RC;
1.10 paf 573: }
574: break;
575:
576: // METHOD DEFINITION
577: case LS_DEF_NAME:
1.48 paf 578: switch(c) {
579: case '[':
1.10 paf 580: PC->ls=LS_DEF_PARAMS;
1.48 paf 581: RC;
582: case '\n':
583: PC->ls=LS_DEF_SPECIAL_BODY;
584: RC;
1.10 paf 585: }
586: break;
1.48 paf 587:
1.10 paf 588: case LS_DEF_PARAMS:
1.48 paf 589: switch(c) {
590: case ';':
591: RC;
592: case ']':
1.10 paf 593: PC->ls=*PC->source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 594: RC;
1.49 paf 595: case '\n': // wrong. bailing out
1.10 paf 596: pop_LS(PC);
1.48 paf 597: RC;
1.10 paf 598: }
599: break;
1.48 paf 600:
1.10 paf 601: case LS_DEF_LOCALS:
1.48 paf 602: switch(c) {
603: case '[':
604: case ';':
605: RC;
606: case ']':
1.10 paf 607: PC->ls=LS_DEF_COMMENT;
1.48 paf 608: RC;
609: case '\n': // wrong. bailing out
1.10 paf 610: pop_LS(PC);
1.48 paf 611: RC;
1.10 paf 612: }
613: break;
1.48 paf 614:
1.10 paf 615: case LS_DEF_COMMENT:
616: if(c=='\n') {
617: pop_LS(PC);
1.48 paf 618: RC;
1.37 paf 619: }
620: break;
621:
1.48 paf 622: case LS_DEF_SPECIAL_BODY:
1.37 paf 623: if(c=='\n') {
1.48 paf 624: switch(*PC->source) {
625: case '@': case 0: // end of special_code
1.37 paf 626: pop_LS(PC);
1.48 paf 627: break;
628: }
629: RC;
630: }
631: break;
632:
633: // (EXPRESSION)
1.69 paf 634: case LS_VAR_ROUND:
635: case LS_METHOD_ROUND:
1.48 paf 636: switch(c) {
637: case ')':
638: if(--lexical_brackets_nestage==0)
1.69 paf 639: if(PC->ls==LS_METHOD_ROUND) // method round param ended
640: PC->ls=LS_METHOD_AFTER; // look for method end
641: else // PC->ls==LS_VAR_ROUND // variable constructor ended
642: pop_LS(PC); // return to normal life
1.48 paf 643: RC;
644: case '$':
1.69 paf 645: push_LS(PC, LS_EXPRESSION_VAR_NAME);
1.48 paf 646: RC;
647: case '^':
648: push_LS(PC, LS_METHOD_NAME);
649: RC;
650: case '(':
651: lexical_brackets_nestage++;
652: RC;
1.67 paf 653: case '-':
654: if(*PC->source=='f') { // -f
655: skip_analized=1;
656: result=FEXISTS;
657: } else
658: result=c;
659: goto break2;
660: case '+': case '*': case '/': case '%':
1.58 paf 661: case '~':
1.48 paf 662: case ';':
663: RC;
1.59 paf 664: case '&': case '|': case '#':
1.58 paf 665: if(*PC->source==c) { // && ||
1.59 paf 666: result=c=='#'?LXOR:c=='&'?LAND:LOR;
1.67 paf 667: skip_analized=1;
1.58 paf 668: } else
669: result=c;
670: goto break2;
671: case '<': case '>': case '=': case '!':
672: if(*PC->source=='=') { // <= >= == !=
1.67 paf 673: skip_analized=1;
1.58 paf 674: switch(c) {
675: case '<': result=NLE; break;
676: case '>': result=NGE; break;
677: case '=': result=NEQ; break;
678: case '!': result=NNE; break;
679: }
680: } else
681: result=c;
682: goto break2;
1.48 paf 683: case '"':
684: push_LS(PC, LS_EXPRESSION_STRING);
685: RC;
1.50 paf 686: case 'l': case 'g': case 'e': case 'n':
1.51 paf 687: if(end==begin) // right after whitespace
1.58 paf 688: switch(*PC->source) {
1.51 paf 689: // case '?': // ok [and bad cases, yacc would bark at them]
690: case 't': // lt gt [et nt]
1.62 paf 691: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1.67 paf 692: skip_analized=1;
1.58 paf 693: goto break2;
1.51 paf 694: case 'e': // le ge ne [ee]
1.58 paf 695: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1.67 paf 696: skip_analized=1;
1.58 paf 697: goto break2;
1.51 paf 698: case 'q': // eq [lq gq nq]
1.58 paf 699: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1.67 paf 700: skip_analized=1;
701: goto break2;
702: }
703: break;
704: case 'i':
705: if(end==begin) // right after whitespace
706: if(PC->source[0]=='n') { // in
707: skip_analized=1;
708: result=IN;
709: goto break2;
710: }
711: break;
712: case 'd':
713: if(end==begin) // right after whitespace
714: if(PC->source[0]=='e' && PC->source[1]=='f') { // def
715: skip_analized=2;
716: result=DEF;
1.58 paf 717: goto break2;
1.50 paf 718: }
1.48 paf 719: break;
720: case ' ': case '\t': case '\n':
1.63 paf 721: if(end!=begin) { // there were a string after previous operator?
722: result=0; // return that string
723: goto break2;
1.48 paf 724: }
1.63 paf 725: // that's a leading|traling space or after-operator-space
726: // ignoring it
727: // reset piece 'begin' position & line
1.58 paf 728: begin=PC->source; // after whitespace char
1.48 paf 729: begin_line=PC->line;
730: continue;
1.1 paf 731: }
732: break;
733:
1.10 paf 734: // VARIABLE GET/PUT/WITH
1.1 paf 735: case LS_VAR_NAME_SIMPLE:
1.69 paf 736: case LS_EXPRESSION_VAR_NAME:
737: if(PC->ls==LS_EXPRESSION_VAR_NAME) {
1.56 paf 738: // name in expr ends also before binary operators
1.48 paf 739: switch(c) {
740: case '+': case '-': case '*': case '/': case '%':
741: case '&': case '|':
742: case '<': case '>': case '=': case '!':
743: pop_LS(PC);
744: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
745: result=EON;
746: goto break2;
747: }
748: }
749: switch(c) {
750: case 0:
751: case ' ': case '\t': case '\n':
752: case ';':
1.64 paf 753: case ']': case '}': case ')': case '"':
1.1 paf 754: pop_LS(PC);
1.32 paf 755: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 756: result=EON;
1.1 paf 757: goto break2;
1.48 paf 758: case '[':
759: PC->ls=LS_VAR_SQUARE;
1.1 paf 760: lexical_brackets_nestage=1;
1.48 paf 761: RC;
762: case '{':
763: if(begin==end) { // ${name}, no need of EON, switching LS
764: PC->ls=LS_VAR_NAME_CURLY;
765: } else {
766: PC->ls=LS_VAR_CURLY;
767: lexical_brackets_nestage=1;
768: }
1.69 paf 769:
1.48 paf 770: RC;
771: case '(':
1.69 paf 772: PC->ls=LS_VAR_ROUND;
1.1 paf 773: lexical_brackets_nestage=1;
1.48 paf 774: RC;
775: case '.': // name part delim
776: case '$': // name part subvar
777: case ':': // ':name' or 'class:name'
778: RC;
1.1 paf 779: }
780: break;
1.48 paf 781:
1.1 paf 782: case LS_VAR_NAME_CURLY:
1.48 paf 783: switch(c) {
784: case '}': // ${name} finished, restoring LS
1.1 paf 785: pop_LS(PC);
1.48 paf 786: RC;
787: case '.': // name part delim
788: case '$': // name part subvar
789: case ':': // ':name' or 'class:name'
790: RC;
1.1 paf 791: }
792: break;
1.48 paf 793:
794: case LS_VAR_SQUARE:
795: switch(c) {
796: case '$':
1.10 paf 797: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 798: RC;
799: case '^':
1.10 paf 800: push_LS(PC, LS_METHOD_NAME);
1.48 paf 801: RC;
802: case ']':
1.1 paf 803: if(--lexical_brackets_nestage==0) {
804: pop_LS(PC);
1.48 paf 805: RC;
1.1 paf 806: }
1.48 paf 807: break;
808: case ';': // operator_or_fmt;value delim
809: RC;
810: case '[':
811: lexical_brackets_nestage++;
812: break;
1.1 paf 813: }
814: break;
1.48 paf 815:
1.1 paf 816: case LS_VAR_CURLY:
1.48 paf 817: switch(c) {
818: case '$':
1.10 paf 819: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 820: RC;
821: case '^':
1.10 paf 822: push_LS(PC, LS_METHOD_NAME);
1.48 paf 823: RC;
824: case '}':
1.1 paf 825: if(--lexical_brackets_nestage==0) {
826: pop_LS(PC);
1.48 paf 827: RC;
1.1 paf 828: }
1.48 paf 829: break;
830: case '{':
1.1 paf 831: lexical_brackets_nestage++;
1.48 paf 832: break;
833: }
1.1 paf 834: break;
835:
1.10 paf 836: // METHOD CALL
1.1 paf 837: case LS_METHOD_NAME:
1.48 paf 838: switch(c) {
839: case '[':
840: PC->ls=LS_METHOD_SQUARE;
1.1 paf 841: lexical_brackets_nestage=1;
1.48 paf 842: RC;
843: case '{':
1.1 paf 844: PC->ls=LS_METHOD_CURLY;
845: lexical_brackets_nestage=1;
1.48 paf 846: RC;
1.69 paf 847: case '(':
848: PC->ls=LS_METHOD_ROUND;
849: lexical_brackets_nestage=1;
850: RC;
1.48 paf 851: case '.': // name part delim
852: case '$': // name part subvar
853: case ':': // ':name' or 'class:name'
854: RC;
1.1 paf 855: }
856: break;
1.48 paf 857:
858: case LS_METHOD_SQUARE:
859: switch(c) {
860: case '$':
1.10 paf 861: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 862: RC;
863: case '^':
1.10 paf 864: push_LS(PC, LS_METHOD_NAME);
1.48 paf 865: RC;
866: case ';': // param delim
867: RC;
868: case ']':
1.1 paf 869: if(--lexical_brackets_nestage==0) {
870: PC->ls=LS_METHOD_AFTER;
1.48 paf 871: RC;
1.1 paf 872: }
1.48 paf 873: break;
874: case '[':
1.1 paf 875: lexical_brackets_nestage++;
1.48 paf 876: break;
877: }
1.1 paf 878: break;
1.48 paf 879:
1.1 paf 880: case LS_METHOD_CURLY:
1.48 paf 881: switch(c) {
882: case '$':
1.10 paf 883: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 884: RC;
885: case '^':
1.10 paf 886: push_LS(PC, LS_METHOD_NAME);
1.48 paf 887: RC;
888: case '}':
1.1 paf 889: if(--lexical_brackets_nestage==0) {
890: PC->ls=LS_METHOD_AFTER;
1.48 paf 891: RC;
1.1 paf 892: }
1.48 paf 893: break;
894: case '{':
1.1 paf 895: lexical_brackets_nestage++;
1.48 paf 896: break;
897: }
1.1 paf 898: break;
1.48 paf 899:
1.1 paf 900: case LS_METHOD_AFTER:
1.69 paf 901: if(c=='[') {/* ][ }[ )[ */
1.48 paf 902: PC->ls=LS_METHOD_SQUARE;
1.1 paf 903: lexical_brackets_nestage=1;
1.48 paf 904: RC;
1.1 paf 905: }
1.69 paf 906: if(c=='{') {/* ]{ }{ ){ */
1.1 paf 907: PC->ls=LS_METHOD_CURLY;
1.69 paf 908: lexical_brackets_nestage=1;
909: RC;
910: }
911: if(c=='(') {/* ]( }( )( */
912: PC->ls=LS_METHOD_ROUND;
1.1 paf 913: lexical_brackets_nestage=1;
1.48 paf 914: RC;
1.1 paf 915: }
916: pop_LS(PC);
1.32 paf 917: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 918: result=EON;
1.1 paf 919: goto break2;
920: }
1.9 paf 921: if(c==0) {
1.1 paf 922: result=-1;
923: break;
924: }
925: }
926:
927: break2:
1.59 paf 928: if(end!=begin) { // there is last piece?
929: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
930: // strip last \n
1.10 paf 931: end--;
1.59 paf 932: }
933: if(end!=begin) { // last piece still alive?
934: // append it
1.30 paf 935: PC->string->APPEND(begin, end-begin, PC->file, begin_line/*, start_col*/);
936: }
1.59 paf 937: }
938: if(PC->string->size()) { // something accumulated?
1.17 paf 939: // create STRING value: array of OP_VALUE+vstring
1.55 paf 940: *lvalp=VL(NEW VString(*PC->string));
1.10 paf 941: // new pieces storage
1.25 paf 942: PC->string=NEW String(POOL);
1.58 paf 943: // make current result be pending for next call, return STRING for now
944: PC->pending_state=result; result=STRING;
945: }
1.67 paf 946: if(skip_analized) {
947: PC->source+=skip_analized; PC->col+=skip_analized;
1.1 paf 948: }
1.58 paf 949: return result;
1.1 paf 950: }
951:
1.9 paf 952: int real_yyerror(parse_control *pc, char *s) /* Called by yyparse on error */
1.1 paf 953: {
1.16 paf 954: //fprintf(stderr, "[%s]\n", s);
1.6 paf 955:
1.46 paf 956: strncpy(pc->error, s, MAX_STRING); // TODO: перепроверить с треклятым последним байтом
1.1 paf 957: return 1;
958: }
959:
960: static void
1.9 paf 961: yyprint(
1.1 paf 962: FILE *file,
963: int type,
964: YYSTYPE value)
965: {
1.9 paf 966: if(type==STRING)
1.38 paf 967: fprintf(file, " \"%s\"", SLA2S(value)->cstr());
1.1 paf 968: }
969:
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