Annotation of parser3/src/main/compile.y, revision 1.72
1.24 paf 1: /*
1.72 ! paf 2: $Id: compile.y,v 1.71 2001/03/08 09:42:22 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"
1.72 ! paf 25: #define USE_NAME "USE"
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 {
1.72 ! paf 123: if(name==USE_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 "
1.72 ! paf 147: CLASS_NAME", "USE_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($$, OP_GET_ELEMENT__WRITE);
1.42 paf 383: };
384:
1.44 paf 385: class_prefix: STRING ':' {
1.72 ! paf 386: $$=$1; // stack: class name string
! 387: O($$, OP_GET_CLASS);
1.1 paf 388: };
389:
390:
391: /* with */
392:
393: with: '$' name_without_curly_rdive '{' codes '}' {
394: $$=$2;
1.54 paf 395: O($$, OP_CREATE_RWPOOL);
1.9 paf 396: P($$, $4);
1.54 paf 397: O($$, OP_REDUCE_RWPOOL);
398: O($$, OP_WRITE);
1.1 paf 399: };
1.53 paf 400:
1.56 paf 401: /* expr */
1.53 paf 402:
1.56 paf 403: any_expr:
1.55 paf 404: empty_double_value /* optimized $var() case */
1.62 paf 405: | optimized_expr /* $var(something) */
1.53 paf 406: ;
1.62 paf 407: optimized_expr: expr {
408: if(($$=$1)->size()==2) { // only one string literal in there?
409: change_string_literal_to_double_literal($$); // make that string literal Double
410: }
411: };
1.56 paf 412: expr:
1.62 paf 413: STRING
1.64 paf 414: | get_value
1.66 paf 415: | call_value
1.64 paf 416: | '"' string_inside_quotes_value '"' { $$ = $2; }
1.60 paf 417: | '(' expr ')' { $$ = $2; }
418: /* stack: operand // stack: @operand */
419: | '-' expr %prec NEG { $$=$2; O($$, OP_NEG) }
1.68 paf 420: | '~' expr { $$=$2; O($$, OP_INV) }
421: | '!' expr { $$=$2; O($$, OP_NOT) }
422: | "def" expr { $$=$2; O($$, OP_DEF) }
423: | "in" expr { $$=$2; O($$, OP_IN) }
424: | "-f" expr { $$=$2; O($$, OP_FEXISTS) }
1.60 paf 425: /* stack: a,b // stack: a@b */
426: | expr '-' expr { $$=$1; P($$, $3); O($$, OP_SUB) }
427: | expr '+' expr { $$=$1; P($$, $3); O($$, OP_ADD) }
428: | expr '*' expr { $$=$1; P($$, $3); O($$, OP_MUL) }
429: | expr '/' expr { $$=$1; P($$, $3); O($$, OP_DIV) }
430: | expr '%' expr { $$=$1; P($$, $3); O($$, OP_MOD) }
431: | expr '&' expr { $$=$1; P($$, $3); O($$, OP_BIN_AND) }
432: | expr '|' expr { $$=$1; P($$, $3); O($$, OP_BIN_OR) }
433: | expr '#' expr { $$=$1; P($$, $3); O($$, OP_BIN_XOR) }
434: | expr "&&" expr { $$=$1; P($$, $3); O($$, OP_LOG_AND) }
435: | expr "||" expr { $$=$1; P($$, $3); O($$, OP_LOG_OR) }
436: | expr "##" expr { $$=$1; P($$, $3); O($$, OP_LOG_XOR) }
437: | expr '<' expr { $$=$1; P($$, $3); O($$, OP_NUM_LT) }
438: | expr '>' expr { $$=$1; P($$, $3); O($$, OP_NUM_GT) }
439: | expr "<=" expr { $$=$1; P($$, $3); O($$, OP_NUM_LE) }
440: | expr ">=" expr { $$=$1; P($$, $3); O($$, OP_NUM_GE) }
441: | expr "==" expr { $$=$1; P($$, $3); O($$, OP_NUM_EQ) }
442: | expr "!=" expr { $$=$1; P($$, $3); O($$, OP_NUM_NE) }
1.61 paf 443: | expr "lt" expr { $$=$1; P($$, $3); O($$, OP_STR_LT) }
444: | expr "gt" expr { $$=$1; P($$, $3); O($$, OP_STR_GT) }
445: | expr "le" expr { $$=$1; P($$, $3); O($$, OP_STR_LE) }
446: | expr "ge" expr { $$=$1; P($$, $3); O($$, OP_STR_GE) }
447: | expr "eq" expr { $$=$1; P($$, $3); O($$, OP_STR_EQ) }
448: | expr "ne" expr { $$=$1; P($$, $3); O($$, OP_STR_NE) }
1.56 paf 449: ;
1.55 paf 450:
1.65 paf 451: string_inside_quotes_value: maybe_codes {
1.64 paf 452: $$=N(POOL);
453: O($$, OP_CREATE_SWPOOL); /* stack: empty write context */
1.69 paf 454: P($$, $1); /* some code that writes to that context */
1.64 paf 455: O($$, OP_REDUCE_SWPOOL); /* context=pop; stack: context.get_string() */
1.53 paf 456: };
1.1 paf 457:
1.27 paf 458: /* basics */
1.1 paf 459:
1.4 paf 460: write_str_literal: STRING {
1.59 paf 461: $$=$1;
462: O($$, OP_WRITE);
1.54 paf 463: };
464:
1.55 paf 465: empty_double_value: /* empty */ { $$=VL(NEW VDouble(POOL)) };
466: empty_string_value: /* empty */ { $$=VL(NEW VString(POOL)) };
1.25 paf 467: empty: /* empty */ { $$=N(POOL) };
1.1 paf 468:
469: %%
470:
471: /*
472: 000$111(2222)00
473: 000$111{3333}00
1.9 paf 474: $,^: push,=0
1.1 paf 475: 1:( { break=pop
476: 2:( ) pop
477: 3:{ } pop
478:
479: 000^111(2222)4444{33333}4000
1.9 paf 480: $,^: push,=0
1.1 paf 481: 1:( { break=pop
482: 2:( )=4
483: 3:{ }=4
484: 4:[^({]=pop
485: */
486:
487: int yylex(YYSTYPE *lvalp, void *pc) {
488: #define lexical_brackets_nestage PC->brackets_nestages[PC->sp]
1.48 paf 489: #define RC {result=c; goto break2; }
1.1 paf 490:
491: register int c;
492: int result;
493:
494: if(PC->pending_state) {
495: result=PC->pending_state;
496: PC->pending_state=0;
497: return result;
498: }
499:
1.9 paf 500: char *begin=PC->source;
501: char *end;
502: int begin_line=PC->line;
1.67 paf 503: int skip_analized=0;
1.50 paf 504: while(true) {
1.9 paf 505: c=*(end=(PC->source++));
1.1 paf 506:
1.4 paf 507: if(c=='\n') {
1.1 paf 508: PC->line++;
1.8 paf 509: PC->col=0;
1.10 paf 510: } else
1.4 paf 511: PC->col++;
1.1 paf 512:
1.48 paf 513: // escaping: ^^ ^$ ^; ^) ^} ^( ^{ ^"
514: if(c=='^')
515: switch(*PC->source) {
516: case '^': case '$': case ';':
517: case '[': case ']':
518: case '{': case '}':
519: case '"':
1.40 paf 520: if(end!=begin) {
521: // append piece till ^
522: PC->string->APPEND(begin, end-begin, PC->file, begin_line);
523: }
1.63 paf 524: // reset piece 'begin' position & line
1.40 paf 525: begin=PC->source; // ^
1.9 paf 526: begin_line=PC->line;
1.40 paf 527: // skip over ^ and _
1.50 paf 528: PC->source++; PC->col++;
1.40 paf 529: // skip analysis = forced literal
1.1 paf 530: continue;
531: }
532: switch(PC->ls) {
1.10 paf 533:
534: // USER'S = NOT OURS
1.1 paf 535: case LS_USER:
1.48 paf 536: switch(c) {
537: case '$':
1.10 paf 538: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 539: RC;
540: case '^':
541: push_LS(PC, LS_METHOD_NAME);
542: RC;
543: case '@':
544: if(PC->col==0+1) {
545: push_LS(PC, LS_DEF_NAME);
546: RC;
547: }
548: break;
1.1 paf 549: }
1.48 paf 550: break;
551:
552: // STRING IN EXPRESSION
553: case LS_EXPRESSION_STRING:
554: switch(c) {
555: case '"':
556: pop_LS(PC); //"abc".
557: RC;
558: case '$':
559: push_LS(PC, LS_VAR_NAME_SIMPLE);
560: RC;
561: case '^':
1.10 paf 562: push_LS(PC, LS_METHOD_NAME);
1.48 paf 563: RC;
1.10 paf 564: }
565: break;
566:
567: // METHOD DEFINITION
568: case LS_DEF_NAME:
1.48 paf 569: switch(c) {
570: case '[':
1.10 paf 571: PC->ls=LS_DEF_PARAMS;
1.48 paf 572: RC;
573: case '\n':
574: PC->ls=LS_DEF_SPECIAL_BODY;
575: RC;
1.10 paf 576: }
577: break;
1.48 paf 578:
1.10 paf 579: case LS_DEF_PARAMS:
1.48 paf 580: switch(c) {
581: case ';':
582: RC;
583: case ']':
1.10 paf 584: PC->ls=*PC->source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 585: RC;
1.49 paf 586: case '\n': // wrong. bailing out
1.10 paf 587: pop_LS(PC);
1.48 paf 588: RC;
1.10 paf 589: }
590: break;
1.48 paf 591:
1.10 paf 592: case LS_DEF_LOCALS:
1.48 paf 593: switch(c) {
594: case '[':
595: case ';':
596: RC;
597: case ']':
1.10 paf 598: PC->ls=LS_DEF_COMMENT;
1.48 paf 599: RC;
600: case '\n': // wrong. bailing out
1.10 paf 601: pop_LS(PC);
1.48 paf 602: RC;
1.10 paf 603: }
604: break;
1.48 paf 605:
1.10 paf 606: case LS_DEF_COMMENT:
607: if(c=='\n') {
608: pop_LS(PC);
1.48 paf 609: RC;
1.37 paf 610: }
611: break;
612:
1.48 paf 613: case LS_DEF_SPECIAL_BODY:
1.37 paf 614: if(c=='\n') {
1.48 paf 615: switch(*PC->source) {
616: case '@': case 0: // end of special_code
1.37 paf 617: pop_LS(PC);
1.48 paf 618: break;
619: }
620: RC;
621: }
622: break;
623:
624: // (EXPRESSION)
1.69 paf 625: case LS_VAR_ROUND:
626: case LS_METHOD_ROUND:
1.48 paf 627: switch(c) {
628: case ')':
629: if(--lexical_brackets_nestage==0)
1.69 paf 630: if(PC->ls==LS_METHOD_ROUND) // method round param ended
631: PC->ls=LS_METHOD_AFTER; // look for method end
632: else // PC->ls==LS_VAR_ROUND // variable constructor ended
633: pop_LS(PC); // return to normal life
1.48 paf 634: RC;
635: case '$':
1.69 paf 636: push_LS(PC, LS_EXPRESSION_VAR_NAME);
1.48 paf 637: RC;
638: case '^':
639: push_LS(PC, LS_METHOD_NAME);
640: RC;
641: case '(':
642: lexical_brackets_nestage++;
643: RC;
1.67 paf 644: case '-':
645: if(*PC->source=='f') { // -f
646: skip_analized=1;
647: result=FEXISTS;
648: } else
649: result=c;
650: goto break2;
651: case '+': case '*': case '/': case '%':
1.58 paf 652: case '~':
1.48 paf 653: case ';':
654: RC;
1.59 paf 655: case '&': case '|': case '#':
1.58 paf 656: if(*PC->source==c) { // && ||
1.59 paf 657: result=c=='#'?LXOR:c=='&'?LAND:LOR;
1.67 paf 658: skip_analized=1;
1.58 paf 659: } else
660: result=c;
661: goto break2;
662: case '<': case '>': case '=': case '!':
663: if(*PC->source=='=') { // <= >= == !=
1.67 paf 664: skip_analized=1;
1.58 paf 665: switch(c) {
666: case '<': result=NLE; break;
667: case '>': result=NGE; break;
668: case '=': result=NEQ; break;
669: case '!': result=NNE; break;
670: }
671: } else
672: result=c;
673: goto break2;
1.48 paf 674: case '"':
675: push_LS(PC, LS_EXPRESSION_STRING);
676: RC;
1.50 paf 677: case 'l': case 'g': case 'e': case 'n':
1.51 paf 678: if(end==begin) // right after whitespace
1.58 paf 679: switch(*PC->source) {
1.51 paf 680: // case '?': // ok [and bad cases, yacc would bark at them]
681: case 't': // lt gt [et nt]
1.62 paf 682: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1.67 paf 683: skip_analized=1;
1.58 paf 684: goto break2;
1.51 paf 685: case 'e': // le ge ne [ee]
1.58 paf 686: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1.67 paf 687: skip_analized=1;
1.58 paf 688: goto break2;
1.51 paf 689: case 'q': // eq [lq gq nq]
1.58 paf 690: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1.67 paf 691: skip_analized=1;
692: goto break2;
693: }
694: break;
695: case 'i':
696: if(end==begin) // right after whitespace
697: if(PC->source[0]=='n') { // in
698: skip_analized=1;
699: result=IN;
700: goto break2;
701: }
702: break;
703: case 'd':
704: if(end==begin) // right after whitespace
705: if(PC->source[0]=='e' && PC->source[1]=='f') { // def
706: skip_analized=2;
707: result=DEF;
1.58 paf 708: goto break2;
1.50 paf 709: }
1.48 paf 710: break;
711: case ' ': case '\t': case '\n':
1.63 paf 712: if(end!=begin) { // there were a string after previous operator?
713: result=0; // return that string
714: goto break2;
1.48 paf 715: }
1.63 paf 716: // that's a leading|traling space or after-operator-space
717: // ignoring it
718: // reset piece 'begin' position & line
1.58 paf 719: begin=PC->source; // after whitespace char
1.48 paf 720: begin_line=PC->line;
721: continue;
1.1 paf 722: }
723: break;
724:
1.10 paf 725: // VARIABLE GET/PUT/WITH
1.1 paf 726: case LS_VAR_NAME_SIMPLE:
1.69 paf 727: case LS_EXPRESSION_VAR_NAME:
728: if(PC->ls==LS_EXPRESSION_VAR_NAME) {
1.56 paf 729: // name in expr ends also before binary operators
1.48 paf 730: switch(c) {
731: case '+': case '-': case '*': case '/': case '%':
732: case '&': case '|':
733: case '<': case '>': case '=': case '!':
734: pop_LS(PC);
735: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
736: result=EON;
737: goto break2;
738: }
739: }
740: switch(c) {
741: case 0:
742: case ' ': case '\t': case '\n':
743: case ';':
1.64 paf 744: case ']': case '}': case ')': case '"':
1.1 paf 745: pop_LS(PC);
1.32 paf 746: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 747: result=EON;
1.1 paf 748: goto break2;
1.48 paf 749: case '[':
750: PC->ls=LS_VAR_SQUARE;
1.1 paf 751: lexical_brackets_nestage=1;
1.48 paf 752: RC;
753: case '{':
754: if(begin==end) { // ${name}, no need of EON, switching LS
755: PC->ls=LS_VAR_NAME_CURLY;
756: } else {
757: PC->ls=LS_VAR_CURLY;
758: lexical_brackets_nestage=1;
759: }
1.69 paf 760:
1.48 paf 761: RC;
762: case '(':
1.69 paf 763: PC->ls=LS_VAR_ROUND;
1.1 paf 764: lexical_brackets_nestage=1;
1.48 paf 765: RC;
766: case '.': // name part delim
767: case '$': // name part subvar
768: case ':': // ':name' or 'class:name'
769: RC;
1.1 paf 770: }
771: break;
1.48 paf 772:
1.1 paf 773: case LS_VAR_NAME_CURLY:
1.48 paf 774: switch(c) {
775: case '}': // ${name} finished, restoring LS
1.1 paf 776: pop_LS(PC);
1.48 paf 777: RC;
778: case '.': // name part delim
779: case '$': // name part subvar
780: case ':': // ':name' or 'class:name'
781: RC;
1.1 paf 782: }
783: break;
1.48 paf 784:
785: case LS_VAR_SQUARE:
786: switch(c) {
787: case '$':
1.10 paf 788: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 789: RC;
790: case '^':
1.10 paf 791: push_LS(PC, LS_METHOD_NAME);
1.48 paf 792: RC;
793: case ']':
1.1 paf 794: if(--lexical_brackets_nestage==0) {
795: pop_LS(PC);
1.48 paf 796: RC;
1.1 paf 797: }
1.48 paf 798: break;
799: case ';': // operator_or_fmt;value delim
800: RC;
801: case '[':
802: lexical_brackets_nestage++;
803: break;
1.1 paf 804: }
805: break;
1.48 paf 806:
1.1 paf 807: case LS_VAR_CURLY:
1.48 paf 808: switch(c) {
809: case '$':
1.10 paf 810: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 811: RC;
812: case '^':
1.10 paf 813: push_LS(PC, LS_METHOD_NAME);
1.48 paf 814: RC;
815: case '}':
1.1 paf 816: if(--lexical_brackets_nestage==0) {
817: pop_LS(PC);
1.48 paf 818: RC;
1.1 paf 819: }
1.48 paf 820: break;
821: case '{':
1.1 paf 822: lexical_brackets_nestage++;
1.48 paf 823: break;
824: }
1.1 paf 825: break;
826:
1.10 paf 827: // METHOD CALL
1.1 paf 828: case LS_METHOD_NAME:
1.48 paf 829: switch(c) {
830: case '[':
831: PC->ls=LS_METHOD_SQUARE;
1.1 paf 832: lexical_brackets_nestage=1;
1.48 paf 833: RC;
834: case '{':
1.1 paf 835: PC->ls=LS_METHOD_CURLY;
836: lexical_brackets_nestage=1;
1.48 paf 837: RC;
1.69 paf 838: case '(':
839: PC->ls=LS_METHOD_ROUND;
840: lexical_brackets_nestage=1;
841: RC;
1.48 paf 842: case '.': // name part delim
843: case '$': // name part subvar
844: case ':': // ':name' or 'class:name'
845: RC;
1.1 paf 846: }
847: break;
1.48 paf 848:
849: case LS_METHOD_SQUARE:
850: switch(c) {
851: case '$':
1.10 paf 852: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 853: RC;
854: case '^':
1.10 paf 855: push_LS(PC, LS_METHOD_NAME);
1.48 paf 856: RC;
857: case ';': // param delim
858: RC;
859: case ']':
1.1 paf 860: if(--lexical_brackets_nestage==0) {
861: PC->ls=LS_METHOD_AFTER;
1.48 paf 862: RC;
1.1 paf 863: }
1.48 paf 864: break;
865: case '[':
1.1 paf 866: lexical_brackets_nestage++;
1.48 paf 867: break;
868: }
1.1 paf 869: break;
1.48 paf 870:
1.1 paf 871: case LS_METHOD_CURLY:
1.48 paf 872: switch(c) {
873: case '$':
1.10 paf 874: push_LS(PC, LS_VAR_NAME_SIMPLE);
1.48 paf 875: RC;
876: case '^':
1.10 paf 877: push_LS(PC, LS_METHOD_NAME);
1.48 paf 878: RC;
879: case '}':
1.1 paf 880: if(--lexical_brackets_nestage==0) {
881: PC->ls=LS_METHOD_AFTER;
1.48 paf 882: RC;
1.1 paf 883: }
1.48 paf 884: break;
885: case '{':
1.1 paf 886: lexical_brackets_nestage++;
1.48 paf 887: break;
888: }
1.1 paf 889: break;
1.48 paf 890:
1.1 paf 891: case LS_METHOD_AFTER:
1.69 paf 892: if(c=='[') {/* ][ }[ )[ */
1.48 paf 893: PC->ls=LS_METHOD_SQUARE;
1.1 paf 894: lexical_brackets_nestage=1;
1.48 paf 895: RC;
1.1 paf 896: }
1.69 paf 897: if(c=='{') {/* ]{ }{ ){ */
1.1 paf 898: PC->ls=LS_METHOD_CURLY;
1.69 paf 899: lexical_brackets_nestage=1;
900: RC;
901: }
902: if(c=='(') {/* ]( }( )( */
903: PC->ls=LS_METHOD_ROUND;
1.1 paf 904: lexical_brackets_nestage=1;
1.48 paf 905: RC;
1.1 paf 906: }
907: pop_LS(PC);
1.32 paf 908: PC->source--; if(--PC->col<0) { PC->line--; PC->col=-1; }
1.13 paf 909: result=EON;
1.1 paf 910: goto break2;
911: }
1.9 paf 912: if(c==0) {
1.1 paf 913: result=-1;
914: break;
915: }
916: }
917:
918: break2:
1.59 paf 919: if(end!=begin) { // there is last piece?
920: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
921: // strip last \n
1.10 paf 922: end--;
1.59 paf 923: }
924: if(end!=begin) { // last piece still alive?
925: // append it
1.30 paf 926: PC->string->APPEND(begin, end-begin, PC->file, begin_line/*, start_col*/);
927: }
1.59 paf 928: }
929: if(PC->string->size()) { // something accumulated?
1.17 paf 930: // create STRING value: array of OP_VALUE+vstring
1.55 paf 931: *lvalp=VL(NEW VString(*PC->string));
1.10 paf 932: // new pieces storage
1.25 paf 933: PC->string=NEW String(POOL);
1.58 paf 934: // make current result be pending for next call, return STRING for now
935: PC->pending_state=result; result=STRING;
936: }
1.67 paf 937: if(skip_analized) {
938: PC->source+=skip_analized; PC->col+=skip_analized;
1.1 paf 939: }
1.58 paf 940: return result;
1.1 paf 941: }
942:
1.9 paf 943: int real_yyerror(parse_control *pc, char *s) /* Called by yyparse on error */
1.1 paf 944: {
1.16 paf 945: //fprintf(stderr, "[%s]\n", s);
1.6 paf 946:
1.46 paf 947: strncpy(pc->error, s, MAX_STRING); // TODO: перепроверить с треклятым последним байтом
1.1 paf 948: return 1;
949: }
950:
951: static void
1.9 paf 952: yyprint(
1.1 paf 953: FILE *file,
954: int type,
955: YYSTYPE value)
956: {
1.9 paf 957: if(type==STRING)
1.38 paf 958: fprintf(file, " \"%s\"", SLA2S(value)->cstr());
1.1 paf 959: }
960:
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