Annotation of parser3/src/main/compile.y, revision 1.209.2.1
1.168 parser 1: %{
1.105 paf 2: /** @file
1.106 paf 3: Parser: compiler(lexical parser and grammar).
4:
1.204 paf 5: Copyright (c) 2001, 2003 ArtLebedev Group (http://www.artlebedev.com)
1.168 parser 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.106 paf 7:
1.209.2.1! paf 8: $Id: compile.y,v 1.209 2004/04/06 09:01:21 paf Exp $
1.88 paf 9: */
10:
1.106 paf 11: /**
12: @todo parser4:
13: - cache compiled code from request to request. to do that...
14: -#: make method definitions, @CLASS, @BASE, @USE instructions,
1.88 paf 15: which would be executed afterwards, and actions
16: now performed at compile time would be delayed to run time.
1.106 paf 17: -#: make cache expiration on time and on disk-change of class source
18: -#: in apache use subpools for compiled class storage
19: -#: in iis make up specialized Pool object for that
1.24 paf 20: */
21:
1.206 paf 22: #define YYSTYPE ArrayOperation*
1.9 paf 23: #define YYPARSE_PARAM pc
24: #define YYLEX_PARAM pc
25: #define YYDEBUG 1
1.106 paf 26: #define YYERROR_VERBOSE 1
1.206 paf 27: #define yyerror(msg) real_yyerror((Parse_control *)pc, msg)
1.9 paf 28: #define YYPRINT(file, type, value) yyprint(file, type, value)
1.1 paf 29:
1.206 paf 30: // includes
31:
1.1 paf 32: #include "compile_tools.h"
1.8 paf 33: #include "pa_value.h"
1.12 paf 34: #include "pa_request.h"
1.39 paf 35: #include "pa_vobject.h"
1.52 paf 36: #include "pa_vdouble.h"
1.98 paf 37: #include "pa_globals.h"
1.141 parser 38: #include "pa_vvoid.h"
1.200 paf 39: #include "pa_vmethod_frame.h"
1.39 paf 40:
1.206 paf 41: // defines
42:
1.97 paf 43: #define USE_CONTROL_METHOD_NAME "USE"
1.1 paf 44:
1.206 paf 45: // forwards
46:
47: static int real_yyerror(Parse_control* pc, char* s);
48: static void yyprint(FILE* file, int type, YYSTYPE value);
49: static int yylex(YYSTYPE* lvalp, void* pc);
1.1 paf 50:
1.8 paf 51: // local convinient inplace typecast & var
1.205 paf 52: #undef PC
1.206 paf 53: #define PC (*(Parse_control *)pc)
54: #undef POOL
1.114 paf 55: #define POOL (*PC.pool)
1.107 paf 56: #ifndef DOXYGEN
1.1 paf 57: %}
58:
59: %pure_parser
60:
1.13 paf 61: %token EON
1.4 paf 62: %token STRING
1.1 paf 63: %token BOGUS
1.55 paf 64:
1.58 paf 65: %token BAD_STRING_COMPARISON_OPERATOR
1.114 paf 66: %token BAD_HEX_LITERAL
1.171 parser 67: %token BAD_METHOD_DECL_START
1.193 paf 68: %token BAD_METHOD_PARAMETER_NAME_CHARACTER
1.209 paf 69: %token BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE
1.58 paf 70:
1.59 paf 71: %token LAND "&&"
1.58 paf 72: %token LOR "||"
1.193 paf 73: %token LXOR "!||"
74: %token NXOR "!|"
1.58 paf 75:
76: %token NLE "<="
77: %token NGE ">="
78: %token NEQ "=="
79: %token NNE "!="
1.195 paf 80: %token NSL "<<"
81: %token NSR ">>"
1.58 paf 82:
83: %token SLT "lt"
84: %token SGT "gt"
85: %token SLE "le"
86: %token SGE "ge"
87: %token SEQ "eq"
88: %token SNE "ne"
89:
1.67 paf 90: %token DEF "def"
91: %token IN "in"
92: %token FEXISTS "-f"
1.127 paf 93: %token DEXISTS "-d"
1.95 paf 94: %token IS "is"
1.67 paf 95:
1.57 paf 96: /* logical */
1.193 paf 97: %left "!||"
1.57 paf 98: %left "||"
99: %left "&&"
1.131 paf 100: %left '<' '>' "<=" ">=" "lt" "gt" "le" "ge"
101: %left "==" "!=" "eq" "ne"
102: %left "is" "def" "in" "-f" "-d"
1.57 paf 103:
104: /* bitwise */
1.193 paf 105: %left "!|"
1.131 paf 106: %left '|'
107: %left '&'
1.202 paf 108: %left "<<" ">>"
1.57 paf 109:
1.56 paf 110: /* numerical */
1.202 paf 111: %left '+' '-'
112: %left '*' '/' '\\' '%'
113: %left NUNARY /* unary - + */
114:
115: /* out-of-group */
116: %left '~' /* bitwise */
117: %left '!' /* logical */
1.1 paf 118:
119: %%
1.195 paf 120: all:
1.10 paf 121: one_big_piece {
1.206 paf 122: Method& method=*new Method(Method::CT_ANY,
1.81 paf 123: 0, 0, /*min, max numbered_params_count*/
1.75 paf 124: 0/*param_names*/, 0/*local_names*/,
125: $1/*parser_code*/, 0/*native_code*/);
1.206 paf 126: PC.cclass->add_method(PC.alias_method(main_method_name), method);
1.10 paf 127: }
128: | methods;
129:
130: methods: method | methods method;
131: one_big_piece: maybe_codes;
132:
1.34 paf 133: method: control_method | code_method;
134:
135: control_method: '@' STRING '\n'
1.132 paf 136: maybe_control_strings {
1.206 paf 137: const String& command=*LA2S(*$2);
1.34 paf 138: YYSTYPE strings_code=$4;
1.206 paf 139: if(strings_code->count()<1*OPERATIONS_PER_OPVALUE) {
1.114 paf 140: strcpy(PC.error, "@");
141: strcat(PC.error, command.cstr());
142: strcat(PC.error, " is empty");
1.37 paf 143: YYERROR;
144: }
1.74 paf 145: if(command==CLASS_NAME) {
1.188 paf 146: if(PC.cclass->base_class()) { // already changed from default?
1.114 paf 147: strcpy(PC.error, "class already have a name '");
148: strncat(PC.error, PC.cclass->name().cstr(), 100);
149: strcat(PC.error, "'");
1.73 paf 150: YYERROR;
151: }
1.206 paf 152: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.73 paf 153: // new class' name
1.206 paf 154: const String& name=*LA2S(*strings_code);
1.73 paf 155: // creating the class
1.206 paf 156: VStateless_class* cclass=new VClass;
157: PC.cclass=cclass;
158: PC.cclass->set_name(name);
1.73 paf 159: // append to request's classes
1.206 paf 160: PC.request.classes().put(name, cclass);
1.73 paf 161: } else {
1.206 paf 162: strcpy(PC.error, "@"CLASS_NAME" must contain only one line with class name (contains more then one)");
1.34 paf 163: YYERROR;
164: }
1.130 paf 165: } else if(command==USE_CONTROL_METHOD_NAME) {
1.206 paf 166: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE)
167: PC.request.use_file(PC.request.main_class, *LA2S(*strings_code, i));
1.130 paf 168: } else if(command==BASE_NAME) {
1.188 paf 169: if(PC.cclass->base_class()) { // already changed from default?
1.130 paf 170: strcpy(PC.error, "class already have a base '");
1.188 paf 171: strncat(PC.error, PC.cclass->base_class()->name().cstr(), 100);
1.130 paf 172: strcat(PC.error, "'");
173: YYERROR;
174: }
1.206 paf 175: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
176: const String& base_name=*LA2S(*strings_code);
177: if(Value* base_class_value=PC.request.classes().get(base_name)) {
178: // @CLASS == @BASE sanity check
179: if(VStateless_class *base_class=base_class_value->get_class()) {
180: if(PC.cclass==base_class) {
181: strcpy(PC.error, "@"CLASS_NAME" equals @"BASE_NAME);
182: YYERROR;
183: }
184: PC.cclass->get_class()->set_base(base_class);
185: } else { // they asked to derive from a class without methods ['env' & co]
186: strcpy(PC.error, base_name.cstr());
187: strcat(PC.error, ": you can not derive from this class in @"BASE_NAME);
188: YYERROR;
189: }
190: } else {
1.130 paf 191: strcpy(PC.error, base_name.cstr());
192: strcat(PC.error, ": undefined class in @"BASE_NAME);
1.73 paf 193: YYERROR;
194: }
1.34 paf 195: } else {
1.130 paf 196: strcpy(PC.error, "@"BASE_NAME" must contain sole name");
1.34 paf 197: YYERROR;
198: }
1.130 paf 199: } else {
200: strcpy(PC.error, "'");
201: strncat(PC.error, command.cstr(), MAX_STRING/2);
202: strcat(PC.error, "' invalid special name. valid names are "
203: "'"CLASS_NAME"', '"USE_CONTROL_METHOD_NAME"' and '"BASE_NAME"'");
204: YYERROR;
1.34 paf 205: }
206: };
1.132 paf 207: maybe_control_strings: empty | control_strings;
1.206 paf 208: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2) };
1.37 paf 209: control_string: maybe_string '\n';
210: maybe_string: empty | STRING;
1.34 paf 211:
1.208 paf 212: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n' {
213: PC.explicit_result=false;
1.206 paf 214: const String& name=*LA2S(*$2);
1.10 paf 215:
216: YYSTYPE params_names_code=$3;
1.206 paf 217: ArrayString* params_names=0;
218: if(int size=params_names_code->count()) {
219: params_names=new ArrayString;
220: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
221: *params_names+=LA2S(*params_names_code, i);
1.75 paf 222: }
1.10 paf 223:
224: YYSTYPE locals_names_code=$4;
1.206 paf 225: ArrayString* locals_names=0;
226: if(int size=locals_names_code->count()) {
227: locals_names=new ArrayString;
1.208 paf 228: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE) {
229: const String* local_name=LA2S(*locals_names_code, i);
230: if(*local_name==RESULT_VAR_NAME)
231: PC.explicit_result=true;
232: else
233: *locals_names+=local_name;
234: }
1.75 paf 235: }
1.10 paf 236:
1.208 paf 237: Method* method=new Method(
1.206 paf 238: //name,
1.122 paf 239: Method::CT_ANY,
1.81 paf 240: 0, 0/*min,max numbered_params_count*/,
1.76 paf 241: params_names, locals_names,
1.208 paf 242: 0/*to be filled later in next {} */, 0);
243: PC.cclass->add_method(PC.alias_method(name), *method);
244: *reinterpret_cast<Method**>(&$$)=method;
245:
246: // todo: check [][;result;]
247: } maybe_codes {
248: // fill in the code
249: reinterpret_cast<Method*>($7)->parser_code=$8;
1.8 paf 250: };
1.10 paf 251:
252: maybe_bracketed_strings: empty | bracketed_maybe_strings;
253: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
254: maybe_strings: empty | strings;
1.206 paf 255: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3) };
1.10 paf 256:
257: maybe_comment: empty | STRING;
1.1 paf 258:
259: /* codes */
260:
1.10 paf 261: maybe_codes: empty | codes;
262:
1.206 paf 263: codes: code | codes code { $$=$1; P(*$$, *$2) };
1.81 paf 264: code: write_string | action;
1.209 paf 265: action: get | put | call;
1.1 paf 266:
267: /* get */
268:
1.64 paf 269: get: get_value {
1.184 paf 270: $$=$1; /* stack: resulting value */
1.206 paf 271: changetail_or_append(*$$,
1.186 paf 272: OP_GET_ELEMENT, false, /*->*/OP_GET_ELEMENT__WRITE,
273: /*or */OP_WRITE_VALUE
1.184 paf 274: ); /* value=pop; wcontext.write(value) */
1.1 paf 275: };
1.163 parser 276: get_value: '$' get_name_value { $$=$2 };
1.64 paf 277: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 278: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 279: name_without_curly_rdive:
280: name_without_curly_rdive_read
281: | name_without_curly_rdive_class;
1.19 paf 282: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 283: $$=N();
284: ArrayOperation* diving_code=$1;
285: const String* first_name=LA2S(*diving_code);
1.179 paf 286: // self.xxx... -> xxx...
1.206 paf 287: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 288: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.206 paf 289: O(*yyval, OP_WITH_SELF); /* stack: starting context */
290: P(*yyval, *diving_code,
1.22 paf 291: /* skip over... */
1.206 paf 292: diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.22 paf 293: } else {
1.206 paf 294: O(*yyval, OP_WITH_READ); /* stack: starting context */
1.179 paf 295:
1.201 paf 296: // ^if ELEMENT -> ^if ELEMENT_OR_OPERATOR
1.206 paf 297: // OP_VALUE+origin+string+OP_GET_ELEMENT. -> OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
298: if(PC.in_call_value && diving_code->count()==4)
299: diving_code->put(4-1, OP_GET_ELEMENT_OR_OPERATOR);
300: P(*$$, *diving_code);
1.22 paf 301: }
302: /* diving code; stack: current context */
1.1 paf 303: };
1.206 paf 304: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2) };
305: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2) };
1.1 paf 306:
307: /* put */
308:
1.81 paf 309: put: '$' name_expr_wdive construct {
1.20 paf 310: $$=$2; /* stack: context,name */
1.206 paf 311: P(*$$, *$3); /* stack: context,name,constructor_value */
1.20 paf 312: };
1.44 paf 313: name_expr_wdive:
1.157 parser 314: name_expr_wdive_root
315: | name_expr_wdive_write
1.44 paf 316: | name_expr_wdive_class;
1.157 parser 317: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 318: $$=N();
319: ArrayOperation* diving_code=$1;
320: const String* first_name=LA2S(*diving_code);
1.179 paf 321: // $self.xxx... -> $xxx...
1.206 paf 322: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 323: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.206 paf 324: O(*$$, OP_WITH_SELF); /* stack: starting context */
325: P(*$$, *diving_code,
1.23 paf 326: /* skip over... */
1.206 paf 327: diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.23 paf 328: } else {
1.206 paf 329: O(*$$, OP_WITH_ROOT); /* stack: starting context */
330: P(*$$, *diving_code);
1.23 paf 331: }
332: /* diving code; stack: current context */
1.156 parser 333: };
1.157 parser 334: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 335: $$=N();
336: O(*$$, OP_WITH_WRITE); /* stack: starting context */
337: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 338: };
1.206 paf 339: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2) };
1.20 paf 340:
1.149 parser 341: construct:
1.163 parser 342: construct_square
343: | construct_round
344: | construct_curly
1.149 parser 345: ;
346: construct_square: '[' any_constructor_code_value ']' {
347: // stack: context, name
348: $$=$2; // stack: context, name, value
1.206 paf 349: O(*$$, OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 350: }
351: ;
1.149 parser 352: construct_round: '(' expr_value ')' {
1.206 paf 353: $$=N();
354: O(*$$, OP_PREPARE_TO_EXPRESSION);
1.149 parser 355: // stack: context, name
1.206 paf 356: P(*$$, *$2); // stack: context, name, value
357: O(*$$, OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 358: }
1.52 paf 359: ;
1.149 parser 360: construct_curly: '{' maybe_codes '}' {
361: // stack: context, name
1.206 paf 362: $$=N();
363: OA(*$$, OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 364: };
365:
1.55 paf 366: any_constructor_code_value:
1.157 parser 367: void_value /* optimized $var[] case */
1.52 paf 368: | STRING /* optimized $var[STRING] case */
1.55 paf 369: | constructor_code_value /* $var[something complex] */
1.1 paf 370: ;
1.55 paf 371: constructor_code_value: constructor_code {
1.206 paf 372: $$=N();
373: OA(*$$, OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 374: /* some code that writes to that context */
375: /* context=pop; stack: context.value() */
1.1 paf 376: };
1.55 paf 377: constructor_code: codes__excluding_sole_str_literal;
1.206 paf 378: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 379:
1.1 paf 380: /* call */
381:
1.66 paf 382: call: call_value {
383: $$=$1; /* stack: value */
1.209.2.1! paf 384: if(PC.explicit_result)
! 385: changetail_or_append(*$$,
! 386: OP_CALL, true, /*->*/ OP_CALL__WRITE__EXPLICIT_RESULT,
! 387: /*or */OP_WRITE_VALUE/*__EXPLICIT_RESULT*/); /* value=pop; check_empty(value) */
! 388: else
! 389: changetail_or_append(*$$,
! 390: OP_CALL, true, /*->*/ OP_CALL__WRITE,
! 391: /*or */OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.66 paf 392: };
1.177 paf 393: call_value: '^' {
1.180 paf 394: PC.in_call_value=true;
1.177 paf 395: }
396: call_name {
1.180 paf 397: PC.in_call_value=false;
1.177 paf 398: }
1.154 parser 399: store_params EON { /* ^field.$method{vasya} */
400: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 401:
1.154 parser 402: YYSTYPE params_code=$5;
1.206 paf 403: if(params_code->count()==4) { // probably [] case. [OP_VALUE+origin+Void+STORE_PARAM]
404: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.140 parser 405: if(!value->is_defined()) // value is VVoid?
1.123 paf 406: params_code=0; // ^zzz[] case. don't append lone empty param.
1.186 paf 407: }
408: /* stack: context, method_junction */
1.206 paf 409: OA(*$$, OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
1.1 paf 410: };
411:
1.43 paf 412: call_name: name_without_curly_rdive;
1.38 paf 413:
1.206 paf 414: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2) };
1.69 paf 415: store_param:
416: store_square_param
417: | store_round_param
418: | store_curly_param
1.31 paf 419: ;
1.123 paf 420: store_square_param: '[' store_code_param_parts ']' {$$=$2};
1.69 paf 421: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 422: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 423: store_code_param_parts:
424: store_code_param_part
1.206 paf 425: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 426: ;
427: store_expr_param_parts:
428: store_expr_param_part
1.206 paf 429: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 430: ;
1.94 paf 431: store_curly_param_parts:
432: store_curly_param_part
1.206 paf 433: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3) }
1.94 paf 434: ;
1.120 paf 435: store_code_param_part: code_param_value {
1.32 paf 436: $$=$1;
1.206 paf 437: O(*$$, OP_STORE_PARAM);
1.120 paf 438: };
1.69 paf 439: store_expr_param_part: write_expr_value {
1.206 paf 440: $$=N();
441: OA(*$$, OP_EXPR_CODE__STORE_PARAM, $1);
1.69 paf 442: };
1.94 paf 443: store_curly_param_part: maybe_codes {
1.206 paf 444: $$=N();
445: OA(*$$, OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 446: };
1.120 paf 447: code_param_value:
1.157 parser 448: void_value /* optimized [;...] case */
1.120 paf 449: | STRING /* optimized [STRING] case */
450: | constructor_code_value /* [something complex] */
451: ;
1.90 paf 452: write_expr_value: expr_value {
1.206 paf 453: $$=N();
454: O(*$$, OP_PREPARE_TO_EXPRESSION);
455: P(*$$, *$1);
456: O(*$$, OP_WRITE_EXPR_RESULT);
1.69 paf 457: };
1.1 paf 458:
459: /* name */
460:
1.206 paf 461: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 462:
1.206 paf 463: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 464: name_step: name_advance1 '.';
465: name_advance1: name_expr_value {
1.177 paf 466: // we know that name_advance1 not called from ^xxx context
467: // so we'll not check for operator call possibility as we do in name_advance2
468:
1.1 paf 469: /* stack: context */
470: $$=$1; /* stack: context,name */
1.206 paf 471: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 472: };
473: name_advance2: name_expr_value {
474: /* stack: context */
475: $$=$1; /* stack: context,name */
1.206 paf 476: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 477: }
1.4 paf 478: | STRING BOGUS
1.1 paf 479: ;
480: name_expr_value:
1.4 paf 481: STRING /* subname_is_const */
1.1 paf 482: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 483: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 484: | name_square_code_value /* [codes] */
1.1 paf 485: ;
486: name_expr_subvar_value: '$' subvar_ref_name_rdive {
487: $$=$2;
1.206 paf 488: O(*$$, OP_GET_ELEMENT);
1.1 paf 489: };
1.4 paf 490: name_expr_with_subvar_value: STRING subvar_get_writes {
1.206 paf 491: ArrayOperation* code;
1.183 paf 492: {
1.206 paf 493: change_string_literal_to_write_string_literal(*(code=$1));
494: P(*code, *$2);
1.183 paf 495: }
1.206 paf 496: $$=N();
497: OA(*$$, OP_STRING_POOL, code);
1.1 paf 498: };
1.166 parser 499: name_square_code_value: '[' codes ']' {
1.206 paf 500: $$=N();
501: OA(*$$, OP_OBJECT_POOL, $2); /* stack: empty write context */
1.183 paf 502: /* some code that writes to that context */
503: /* context=pop; stack: context.value() */
1.160 parser 504: };
1.154 parser 505: subvar_ref_name_rdive: STRING {
1.206 paf 506: $$=N();
507: O(*$$, OP_WITH_READ);
508: P(*$$, *$1);
1.1 paf 509: };
1.206 paf 510: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 511: subvar__get_write: '$' subvar_ref_name_rdive {
512: $$=$2;
1.206 paf 513: O(*$$, OP_GET_ELEMENT__WRITE);
1.42 paf 514: };
515:
1.154 parser 516: class_prefix:
517: class_static_prefix
518: | class_constructor_prefix
519: ;
1.155 parser 520: class_static_prefix: STRING ':' {
521: $$=$1; // stack: class name string
1.206 paf 522: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
523: if(VStateless_class* base=PC.cclass->base_class()) {
524: change_string_literal_value(*$$, base->name());
1.189 paf 525: } else {
526: strcpy(PC.error, "no base class declared");
527: YYERROR;
528: }
529: }
1.206 paf 530: O(*$$, OP_GET_CLASS);
1.155 parser 531: };
532: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 533: $$=$1;
1.180 paf 534: if(!PC.in_call_value) {
1.154 parser 535: strcpy(PC.error, ":: not allowed here");
536: YYERROR;
537: }
1.206 paf 538: O(*$$, OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 539: };
540:
1.53 paf 541:
1.56 paf 542: /* expr */
1.53 paf 543:
1.81 paf 544: expr_value: expr {
1.182 paf 545: // see OP_PREPARE_TO_EXPRESSION!!
1.206 paf 546: if(($$=$1)->count()==2) // only one string literal in there?
547: change_string_literal_to_double_literal(*$$); // make that string literal Double
1.62 paf 548: };
1.56 paf 549: expr:
1.62 paf 550: STRING
1.64 paf 551: | get_value
1.66 paf 552: | call_value
1.64 paf 553: | '"' string_inside_quotes_value '"' { $$ = $2; }
1.145 parser 554: | '\'' string_inside_quotes_value '\'' { $$ = $2; }
1.60 paf 555: | '(' expr ')' { $$ = $2; }
556: /* stack: operand // stack: @operand */
1.206 paf 557: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP_NEG) }
1.202 paf 558: | '+' expr %prec NUNARY { $$=$2 }
1.206 paf 559: | '~' expr { $$=$2; O(*$$, OP_INV) }
560: | '!' expr { $$=$2; O(*$$, OP_NOT) }
561: | "def" expr { $$=$2; O(*$$, OP_DEF) }
562: | "in" expr { $$=$2; O(*$$, OP_IN) }
563: | "-f" expr { $$=$2; O(*$$, OP_FEXISTS) }
564: | "-d" expr { $$=$2; O(*$$, OP_DEXISTS) }
1.60 paf 565: /* stack: a,b // stack: a@b */
1.206 paf 566: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP_SUB) }
567: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP_ADD) }
568: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MUL) }
569: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP_DIV) }
570: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MOD) }
571: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP_INTDIV) }
572: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SL) }
573: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SR) }
574: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_AND) }
575: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_OR) }
576: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_XOR) }
577: | expr "&&" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_AND) }
578: | expr "||" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_OR) }
579: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP_LOG_XOR) }
580: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LT) }
581: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GT) }
582: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LE) }
583: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GE) }
584: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_EQ) }
585: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_NE) }
586: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LT) }
587: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GT) }
588: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LE) }
589: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GE) }
590: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_EQ) }
591: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_NE) }
592: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP_IS) }
1.56 paf 593: ;
1.55 paf 594:
1.65 paf 595: string_inside_quotes_value: maybe_codes {
1.206 paf 596: $$=N();
597: OA(*$$, OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 598: /* some code that writes to that context */
599: /* context=pop; stack: context.get_string() */
1.53 paf 600: };
1.1 paf 601:
1.27 paf 602: /* basics */
1.1 paf 603:
1.81 paf 604: write_string: STRING {
1.209 paf 605: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
606: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 607: };
608:
1.206 paf 609: void_value: /* empty */ { $$=VL(new VVoid(), 0, 0, 0) };
610: empty: /* empty */ { $$=N() };
1.1 paf 611:
612: %%
1.105 paf 613: #endif
1.1 paf 614:
615: /*
616: 000$111(2222)00
617: 000$111{3333}00
1.9 paf 618: $,^: push,=0
1.1 paf 619: 1:( { break=pop
620: 2:( ) pop
621: 3:{ } pop
622:
623: 000^111(2222)4444{33333}4000
1.9 paf 624: $,^: push,=0
1.1 paf 625: 1:( { break=pop
626: 2:( )=4
627: 3:{ }=4
628: 4:[^({]=pop
629: */
630:
1.206 paf 631: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
632: pc.source--;
633: if(pc.pos.col==0) {
634: --pc.pos.line; pc.pos.col=last_line_end_col;
635: } else
636: --pc.pos.col;
637:
638: }
639: static int yylex(YYSTYPE *lvalp, void *apc) {
640: register Parse_control& pc=*static_cast<Parse_control*>(apc);
641:
642: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 643: #define RC {result=c; goto break2; }
1.1 paf 644:
1.206 paf 645: register int c;
646: int result;
1.1 paf 647:
1.206 paf 648: if(pc.pending_state) {
649: result=pc.pending_state;
650: pc.pending_state=0;
1.1 paf 651: return result;
652: }
653:
1.206 paf 654: const char *begin=pc.source;
655: Pos begin_pos=pc.pos;
1.91 paf 656: const char *end;
1.67 paf 657: int skip_analized=0;
1.50 paf 658: while(true) {
1.206 paf 659: c=*(end=(pc.source++));
660: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 661:
1.208 paf 662: if(c=='\n')
1.206 paf 663: pc.pos_next_line();
1.208 paf 664: else
1.206 paf 665: pc.pos_next_c(c);
1.208 paf 666: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 667:
1.208 paf 668: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 669: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 670: // @SPECIAL
671: // ...
672: // @<here =
1.206 paf 673: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 674: } // continuing checks
1.206 paf 675: if(pc.ls==LS_USER) {
676: push_LS(pc, LS_DEF_NAME);
1.171 parser 677: RC;
1.175 paf 678: } else // @ in first column inside some code [when could that be?]
1.171 parser 679: result=BAD_METHOD_DECL_START;
680: goto break2;
1.209 paf 681: }
682: if(c=='^') {
1.206 paf 683: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 684: // handle after-method situation
1.206 paf 685: pop_LS(pc);
1.203 paf 686: result=EON;
687: skip_analized=-1; // return to punctuation afterwards to assure it's literality
688: goto break2;
689: }
1.206 paf 690: switch(pc.ls) {
1.169 parser 691: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
692: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
693: case LS_VAR_NAME_SIMPLE_WITH_COLON:
694: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
695: case LS_VAR_NAME_CURLY:
696: case LS_METHOD_NAME:
1.194 paf 697: case LS_USER_COMMENT:
1.169 parser 698: case LS_DEF_COMMENT:
699: // no literals in names, please
700: break;
701: default:
1.206 paf 702: switch(*pc.source) {
1.165 parser 703: // ^escaping some punctuators
1.48 paf 704: case '^': case '$': case ';':
1.126 paf 705: case '(': case ')':
1.48 paf 706: case '[': case ']':
707: case '{': case '}':
1.172 parser 708: case '"': case ':':
1.40 paf 709: if(end!=begin) {
1.206 paf 710: if(!pc.string_start)
711: pc.string_start=begin_pos;
1.40 paf 712: // append piece till ^
1.206 paf 713: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 714: }
1.63 paf 715: // reset piece 'begin' position & line
1.206 paf 716: begin=pc.source; // ->punctuation
717: begin_pos=pc.pos;
1.203 paf 718: // skip over _ after ^
1.206 paf 719: pc.source++; pc.pos.col++;
1.203 paf 720: // skip analysis = forced literal
721: continue;
1.114 paf 722:
723: // converting ^#HH into char(hex(HH))
724: case '#':
725: if(end!=begin) {
1.206 paf 726: if(!pc.string_start)
727: pc.string_start=begin_pos;
1.114 paf 728: // append piece till ^
1.206 paf 729: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 730: }
731: // #HH ?
1.206 paf 732: if(pc.source[0]=='#' && pc.source[1] && pc.source[2]) {
733: char c=
734: hex_value[(unsigned char)pc.source[1]]*0x10+
735: hex_value[(unsigned char)pc.source[2]];
736: if(c==0) {
1.114 paf 737: result=BAD_HEX_LITERAL;
738: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
739: }
740: // append char(hex(HH))
1.206 paf 741: pc.string.append(c);
1.114 paf 742: // skip over ^#HH
1.206 paf 743: pc.source+=3;
744: pc.pos.col+=3;
1.114 paf 745: // reset piece 'begin' position & line
1.206 paf 746: begin=pc.source; // ->after ^#HH
747: begin_pos=pc.pos;
1.203 paf 748: // skip analysis = forced literal
1.114 paf 749: continue;
750: }
751: break;
1.1 paf 752: }
1.169 parser 753: break;
1.203 paf 754: }
1.169 parser 755: }
1.113 paf 756: // #comment start skipping
1.206 paf 757: if(c=='#' && pc.pos.col==1) {
1.112 paf 758: if(end!=begin) {
1.206 paf 759: if(!pc.string_start)
760: pc.string_start=begin_pos;
1.112 paf 761: // append piece till #
1.206 paf 762: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 763: }
764: // fall into COMMENT lexical state [wait for \n]
1.206 paf 765: push_LS(pc, LS_USER_COMMENT);
1.175 paf 766: continue;
1.112 paf 767: }
1.206 paf 768: switch(pc.ls) {
1.10 paf 769:
770: // USER'S = NOT OURS
1.1 paf 771: case LS_USER:
1.206 paf 772: case LS_NAME_SQUARE_PART: // name.[here].xxx
773: if(pc.trim_bof)
1.153 parser 774: switch(c) {
775: case '\n': case ' ': case '\t':
1.206 paf 776: begin=pc.source;
777: begin_pos=pc.pos;
1.152 parser 778: continue; // skip it
1.153 parser 779: default:
1.206 paf 780: pc.trim_bof=false;
1.152 parser 781: }
1.48 paf 782: switch(c) {
783: case '$':
1.206 paf 784: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 785: RC;
786: case '^':
1.206 paf 787: push_LS(pc, LS_METHOD_NAME);
1.48 paf 788: RC;
1.166 parser 789: case ']':
1.206 paf 790: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 791: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 792: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 793: RC;
794: }
1.160 parser 795: break;
1.166 parser 796: case '[': // $name.[co<[>de]
1.206 paf 797: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 798: lexical_brackets_nestage++;
1.161 parser 799: break;
1.112 paf 800: }
1.209 paf 801: if(pc.explicit_result && c)
802: switch(c) {
803: case '\n': case ' ': case '\t':
804: begin=pc.source;
805: begin_pos=pc.pos;
806: continue; // skip it
807: default:
808: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
809: goto break2;
810: }
1.112 paf 811: break;
812:
813: // #COMMENT
1.194 paf 814: case LS_USER_COMMENT:
1.112 paf 815: if(c=='\n') {
816: // skip comment
1.206 paf 817: begin=pc.source;
818: begin_pos=pc.pos;
1.112 paf 819:
1.206 paf 820: pop_LS(pc);
1.112 paf 821: continue;
1.1 paf 822: }
1.48 paf 823: break;
824:
825: // STRING IN EXPRESSION
1.145 parser 826: case LS_EXPRESSION_STRING_QUOTED:
827: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 828: switch(c) {
829: case '"':
1.145 parser 830: case '\'':
831: if(
1.206 paf 832: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
833: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
834: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 835: RC;
836: }
837: break;
1.48 paf 838: case '$':
1.206 paf 839: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 840: RC;
841: case '^':
1.206 paf 842: push_LS(pc, LS_METHOD_NAME);
1.48 paf 843: RC;
1.10 paf 844: }
845: break;
846:
847: // METHOD DEFINITION
848: case LS_DEF_NAME:
1.48 paf 849: switch(c) {
850: case '[':
1.206 paf 851: pc.ls=LS_DEF_PARAMS;
1.48 paf 852: RC;
853: case '\n':
1.206 paf 854: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 855: RC;
1.10 paf 856: }
857: break;
1.48 paf 858:
1.10 paf 859: case LS_DEF_PARAMS:
1.48 paf 860: switch(c) {
1.192 paf 861: case '$': // common error
1.193 paf 862: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
863: goto break2;
1.48 paf 864: case ';':
865: RC;
866: case ']':
1.206 paf 867: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 868: RC;
1.49 paf 869: case '\n': // wrong. bailing out
1.206 paf 870: pop_LS(pc);
1.48 paf 871: RC;
1.10 paf 872: }
873: break;
1.48 paf 874:
1.10 paf 875: case LS_DEF_LOCALS:
1.48 paf 876: switch(c) {
877: case '[':
878: case ';':
879: RC;
880: case ']':
1.206 paf 881: pc.ls=LS_DEF_COMMENT;
1.48 paf 882: RC;
883: case '\n': // wrong. bailing out
1.206 paf 884: pop_LS(pc);
1.48 paf 885: RC;
1.10 paf 886: }
887: break;
1.48 paf 888:
1.10 paf 889: case LS_DEF_COMMENT:
890: if(c=='\n') {
1.206 paf 891: pop_LS(pc);
1.48 paf 892: RC;
1.37 paf 893: }
894: break;
895:
1.48 paf 896: case LS_DEF_SPECIAL_BODY:
1.175 paf 897: if(c=='\n')
1.48 paf 898: RC;
899: break;
900:
901: // (EXPRESSION)
1.69 paf 902: case LS_VAR_ROUND:
903: case LS_METHOD_ROUND:
1.48 paf 904: switch(c) {
905: case ')':
906: if(--lexical_brackets_nestage==0)
1.206 paf 907: if(pc.ls==LS_METHOD_ROUND) // method round param ended
908: pc.ls=LS_METHOD_AFTER; // look for method end
909: else // pc.ls==LS_VAR_ROUND // variable constructor ended
910: pop_LS(pc); // return to normal life
1.48 paf 911: RC;
1.194 paf 912: case '#': // comment start skipping
913: if(end!=begin) {
1.206 paf 914: if(!pc.string_start)
915: pc.string_start=begin_pos;
1.194 paf 916: // append piece till #
1.206 paf 917: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 918: }
919: // fall into COMMENT lexical state [wait for \n]
1.206 paf 920: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 921: lexical_brackets_nestage=1;
922: continue;
1.48 paf 923: case '$':
1.206 paf 924: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 925: RC;
926: case '^':
1.206 paf 927: push_LS(pc, LS_METHOD_NAME);
1.48 paf 928: RC;
929: case '(':
930: lexical_brackets_nestage++;
931: RC;
1.67 paf 932: case '-':
1.206 paf 933: switch(*pc.source) {
1.127 paf 934: case 'f': // -f
1.67 paf 935: skip_analized=1;
936: result=FEXISTS;
1.127 paf 937: goto break2;
938: case 'd': // -d
939: skip_analized=1;
940: result=DEXISTS;
941: goto break2;
1.191 paf 942: default: // minus
1.67 paf 943: result=c;
1.127 paf 944: goto break2;
945: }
1.67 paf 946: goto break2;
1.173 paf 947: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 948: case '~':
1.48 paf 949: case ';':
950: RC;
1.193 paf 951: case '&': case '|':
1.206 paf 952: if(*pc.source==c) { // && ||
1.193 paf 953: result=c=='&'?LAND:LOR;
1.67 paf 954: skip_analized=1;
1.58 paf 955: } else
956: result=c;
957: goto break2;
1.193 paf 958: case '!':
1.206 paf 959: switch(pc.source[0]) {
1.193 paf 960: case '|': // !| !||
961: skip_analized=1;
1.206 paf 962: if(pc.source[1]=='|') {
1.193 paf 963: skip_analized++;
964: result=LXOR;
965: } else
966: result=NXOR;
967: goto break2;
968: case '=': // !=
969: skip_analized=1;
970: result=NNE;
971: goto break2;
972: }
973: RC;
1.195 paf 974:
975: case '<': // <<, <=, <
1.206 paf 976: switch(*pc.source) {
1.195 paf 977: case '<': // <[<]
978: skip_analized=1; result=NSL; break;
979: case '=': // <[=]
980: skip_analized=1; result=NLE; break;
981: default: // <[]
982: result=c; break;
983: }
984: goto break2;
985: case '>': // >>, >=, >
1.206 paf 986: switch(*pc.source) {
1.195 paf 987: case '>': // >[>]
988: skip_analized=1; result=NSR; break;
989: case '=': // >[=]
990: skip_analized=1; result=NGE; break;
991: default: // >[]
992: result=c; break;
993: }
994: goto break2;
995: case '=': // ==
1.206 paf 996: switch(*pc.source) {
1.195 paf 997: case '=': // =[=]
998: skip_analized=1; result=NEQ; break;
999: default: // =[]
1000: result=c; break; // not used now
1001: }
1.58 paf 1002: goto break2;
1.195 paf 1003:
1.48 paf 1004: case '"':
1.206 paf 1005: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1006: RC;
1007: case '\'':
1.206 paf 1008: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1009: RC;
1.50 paf 1010: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1011: if(end==begin) // right after whitespace
1.206 paf 1012: if(isspace(pc.source[1])) {
1013: switch(*pc.source) {
1.117 paf 1014: // case '?': // ok [and bad cases, yacc would bark at them]
1015: case 't': // lt gt [et nt]
1016: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1017: skip_analized=1;
1018: goto break2;
1019: case 'e': // le ge ne [ee]
1020: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1021: skip_analized=1;
1022: goto break2;
1023: case 'q': // eq [lq gq nq]
1024: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1025: skip_analized=1;
1026: goto break2;
1027: }
1.67 paf 1028: }
1029: break;
1030: case 'i':
1031: if(end==begin) // right after whitespace
1.206 paf 1032: if(isspace(pc.source[1])) {
1033: switch(pc.source[0]) {
1.117 paf 1034: case 'n': // in
1.95 paf 1035: skip_analized=1;
1036: result=IN;
1037: goto break2;
1.117 paf 1038: case 's': // is
1.95 paf 1039: skip_analized=1;
1040: result=IS;
1041: goto break2;
1042: }
1.67 paf 1043: }
1044: break;
1045: case 'd':
1046: if(end==begin) // right after whitespace
1.206 paf 1047: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.67 paf 1048: skip_analized=2;
1049: result=DEF;
1.58 paf 1050: goto break2;
1.50 paf 1051: }
1.48 paf 1052: break;
1053: case ' ': case '\t': case '\n':
1.63 paf 1054: if(end!=begin) { // there were a string after previous operator?
1055: result=0; // return that string
1056: goto break2;
1.48 paf 1057: }
1.63 paf 1058: // that's a leading|traling space or after-operator-space
1059: // ignoring it
1060: // reset piece 'begin' position & line
1.206 paf 1061: begin=pc.source; // after whitespace char
1062: begin_pos=pc.pos;
1.48 paf 1063: continue;
1.1 paf 1064: }
1065: break;
1.194 paf 1066: case LS_EXPRESSION_COMMENT:
1067: if(c=='(')
1068: lexical_brackets_nestage++;
1069:
1.206 paf 1070: switch(*pc.source) {
1.194 paf 1071: case '\n': case ')':
1.206 paf 1072: if(*pc.source==')')
1.194 paf 1073: if(--lexical_brackets_nestage!=0)
1074: continue;
1075:
1076: // skip comment
1.206 paf 1077: begin=pc.source;
1078: begin_pos=pc.pos;
1.194 paf 1079:
1.206 paf 1080: pop_LS(pc);
1.194 paf 1081: continue;
1082: }
1083: break;
1.1 paf 1084:
1.10 paf 1085: // VARIABLE GET/PUT/WITH
1.166 parser 1086: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1087: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1088: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1089: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1090: if(
1.206 paf 1091: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1092: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1093: // name in expr ends also before
1.48 paf 1094: switch(c) {
1.181 paf 1095: // expression minus
1.92 paf 1096: case '-':
1.181 paf 1097: // expression integer division
1098: case '\\':
1.206 paf 1099: pop_LS(pc);
1100: pc.ungetc();
1.48 paf 1101: result=EON;
1102: goto break2;
1103: }
1104: }
1.166 parser 1105: if(
1.206 paf 1106: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1107: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1108: // name already has ':', stop before next
1109: switch(c) {
1110: case ':':
1.206 paf 1111: pop_LS(pc);
1112: pc.ungetc();
1.142 parser 1113: result=EON;
1114: goto break2;
1115: }
1116: }
1.48 paf 1117: switch(c) {
1118: case 0:
1119: case ' ': case '\t': case '\n':
1120: case ';':
1.126 paf 1121: case ']': case '}': case ')':
1122: case '"': case '\'':
1.139 parser 1123: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1124: case '+': case '*': case '/': case '%':
1125: case '&': case '|':
1126: case '=': case '!':
1.99 paf 1127: // common delimiters
1.190 paf 1128: case ',': case '?': case '#':
1.139 parser 1129: // before call
1130: case '^':
1.206 paf 1131: pop_LS(pc);
1132: pc.ungetc();
1.13 paf 1133: result=EON;
1.1 paf 1134: goto break2;
1.48 paf 1135: case '[':
1.162 parser 1136: // $name.<[>code]
1.206 paf 1137: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1138: end[-1]=='$'/*was start of get*/ ||
1139: end[-1]==':'/*was class name delim */ ||
1140: end[-1]=='.'/*was name delim */
1.162 parser 1141: )) {
1.206 paf 1142: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1143: lexical_brackets_nestage=1;
1144: RC;
1145: }
1.206 paf 1146: pc.ls=LS_VAR_SQUARE;
1.1 paf 1147: lexical_brackets_nestage=1;
1.48 paf 1148: RC;
1149: case '{':
1150: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1151: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1152: } else {
1.206 paf 1153: pc.ls=LS_VAR_CURLY;
1.48 paf 1154: lexical_brackets_nestage=1;
1155: }
1.69 paf 1156:
1.48 paf 1157: RC;
1158: case '(':
1.206 paf 1159: pc.ls=LS_VAR_ROUND;
1.1 paf 1160: lexical_brackets_nestage=1;
1.48 paf 1161: RC;
1162: case '.': // name part delim
1163: case '$': // name part subvar
1.160 parser 1164: case ':': // class<:>name
1.166 parser 1165: // go to _WITHOUT_COLON state variant...
1.206 paf 1166: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1167: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1168: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1169: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1170: // ...stop before next ':'
1.48 paf 1171: RC;
1.1 paf 1172: }
1173: break;
1.48 paf 1174:
1.1 paf 1175: case LS_VAR_NAME_CURLY:
1.48 paf 1176: switch(c) {
1.162 parser 1177: case '[':
1.166 parser 1178: // ${name.<[>code]}
1.206 paf 1179: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1180: lexical_brackets_nestage=1;
1181: RC;
1.48 paf 1182: case '}': // ${name} finished, restoring LS
1.206 paf 1183: pop_LS(pc);
1.48 paf 1184: RC;
1185: case '.': // name part delim
1186: case '$': // name part subvar
1187: case ':': // ':name' or 'class:name'
1188: RC;
1.1 paf 1189: }
1190: break;
1.48 paf 1191:
1192: case LS_VAR_SQUARE:
1193: switch(c) {
1194: case '$':
1.206 paf 1195: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1196: RC;
1197: case '^':
1.206 paf 1198: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1199: RC;
1200: case ']':
1.1 paf 1201: if(--lexical_brackets_nestage==0) {
1.206 paf 1202: pop_LS(pc);
1.48 paf 1203: RC;
1.1 paf 1204: }
1.48 paf 1205: break;
1206: case ';': // operator_or_fmt;value delim
1207: RC;
1208: case '[':
1209: lexical_brackets_nestage++;
1210: break;
1.1 paf 1211: }
1212: break;
1.48 paf 1213:
1.1 paf 1214: case LS_VAR_CURLY:
1.48 paf 1215: switch(c) {
1216: case '$':
1.206 paf 1217: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1218: RC;
1219: case '^':
1.206 paf 1220: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1221: RC;
1222: case '}':
1.1 paf 1223: if(--lexical_brackets_nestage==0) {
1.206 paf 1224: pop_LS(pc);
1.48 paf 1225: RC;
1.1 paf 1226: }
1.48 paf 1227: break;
1228: case '{':
1.1 paf 1229: lexical_brackets_nestage++;
1.48 paf 1230: break;
1231: }
1.1 paf 1232: break;
1233:
1.10 paf 1234: // METHOD CALL
1.1 paf 1235: case LS_METHOD_NAME:
1.48 paf 1236: switch(c) {
1237: case '[':
1.166 parser 1238: // ^name.<[>code].xxx
1.206 paf 1239: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1240: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1241: end[-1]==':'/*was class name delim */ ||
1242: end[-1]=='.'/*was name delim */
1.162 parser 1243: )) {
1.206 paf 1244: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1245: lexical_brackets_nestage=1;
1246: RC;
1247: }
1.206 paf 1248: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1249: lexical_brackets_nestage=1;
1.48 paf 1250: RC;
1251: case '{':
1.206 paf 1252: pc.ls=LS_METHOD_CURLY;
1.1 paf 1253: lexical_brackets_nestage=1;
1.48 paf 1254: RC;
1.69 paf 1255: case '(':
1.206 paf 1256: pc.ls=LS_METHOD_ROUND;
1.69 paf 1257: lexical_brackets_nestage=1;
1258: RC;
1.48 paf 1259: case '.': // name part delim
1260: case '$': // name part subvar
1261: case ':': // ':name' or 'class:name'
1.170 parser 1262: case '^': // ^abc^xxx wrong. bailing out
1263: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1264: case ' ': // ^if ( wrong. bailing out
1.48 paf 1265: RC;
1.1 paf 1266: }
1267: break;
1.48 paf 1268:
1269: case LS_METHOD_SQUARE:
1270: switch(c) {
1271: case '$':
1.206 paf 1272: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1273: RC;
1274: case '^':
1.206 paf 1275: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1276: RC;
1277: case ';': // param delim
1278: RC;
1279: case ']':
1.1 paf 1280: if(--lexical_brackets_nestage==0) {
1.206 paf 1281: pc.ls=LS_METHOD_AFTER;
1.48 paf 1282: RC;
1.1 paf 1283: }
1.48 paf 1284: break;
1285: case '[':
1.1 paf 1286: lexical_brackets_nestage++;
1.48 paf 1287: break;
1288: }
1.1 paf 1289: break;
1.48 paf 1290:
1.1 paf 1291: case LS_METHOD_CURLY:
1.48 paf 1292: switch(c) {
1293: case '$':
1.206 paf 1294: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1295: RC;
1296: case '^':
1.206 paf 1297: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1298: RC;
1299: case ';': // param delim
1.48 paf 1300: RC;
1301: case '}':
1.1 paf 1302: if(--lexical_brackets_nestage==0) {
1.206 paf 1303: pc.ls=LS_METHOD_AFTER;
1.48 paf 1304: RC;
1.1 paf 1305: }
1.48 paf 1306: break;
1307: case '{':
1.1 paf 1308: lexical_brackets_nestage++;
1.48 paf 1309: break;
1310: }
1.209 paf 1311: if(pc.explicit_result && c)
1312: switch(c) {
1313: case '\n': case ' ': case '\t':
1314: begin=pc.source;
1315: begin_pos=pc.pos;
1316: continue; // skip it
1317: default:
1318: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
1319: goto break2;
1320: }
1.1 paf 1321: break;
1.48 paf 1322:
1.1 paf 1323: case LS_METHOD_AFTER:
1.69 paf 1324: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1325: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1326: lexical_brackets_nestage=1;
1.48 paf 1327: RC;
1.1 paf 1328: }
1.69 paf 1329: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1330: pc.ls=LS_METHOD_CURLY;
1.69 paf 1331: lexical_brackets_nestage=1;
1332: RC;
1333: }
1334: if(c=='(') {/* ]( }( )( */
1.206 paf 1335: pc.ls=LS_METHOD_ROUND;
1.1 paf 1336: lexical_brackets_nestage=1;
1.48 paf 1337: RC;
1.1 paf 1338: }
1.206 paf 1339: pop_LS(pc);
1340: pc.ungetc();
1.13 paf 1341: result=EON;
1.1 paf 1342: goto break2;
1343: }
1.9 paf 1344: if(c==0) {
1.1 paf 1345: result=-1;
1346: break;
1347: }
1348: }
1349:
1350: break2:
1.59 paf 1351: if(end!=begin) { // there is last piece?
1352: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1353: // strip last \n
1.10 paf 1354: end--;
1.137 parser 1355: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1356: end--;
1.59 paf 1357: }
1.206 paf 1358: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1359: if(!pc.string_start)
1360: pc.string_start=begin_pos;
1.59 paf 1361: // append it
1.206 paf 1362: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1363: }
1.59 paf 1364: }
1.206 paf 1365: if(!pc.string.is_empty()) { // something accumulated?
1366: // create STRING value: array of OP_VALUE+origin+vstring
1367: *lvalp=VL(
1368: new VString(*new String(pc.string, String::L_CLEAN)),
1369: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1370: // new pieces storage
1.206 paf 1371: pc.string.clear();
1372: pc.string_start.clear();
1.58 paf 1373: // make current result be pending for next call, return STRING for now
1.206 paf 1374: pc.pending_state=result; result=STRING;
1.58 paf 1375: }
1.67 paf 1376: if(skip_analized) {
1.206 paf 1377: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1378: }
1.58 paf 1379: return result;
1.1 paf 1380: }
1381:
1.206 paf 1382: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1383: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1384: return 1;
1.110 paf 1385: }
1.1 paf 1386:
1.110 paf 1387: static void yyprint(FILE *file, int type, YYSTYPE value) {
1388: if(type==STRING)
1.206 paf 1389: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1390: }
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