Annotation of parser3/src/main/compile.y, revision 1.215
1.168 parser 1: %{
1.105 paf 2: /** @file
1.106 paf 3: Parser: compiler(lexical parser and grammar).
4:
1.215 ! paf 5: Copyright (c) 2001-2005 ArtLebedev Group (http://www.artlebedev.com)
1.168 parser 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.88 paf 7: */
8:
1.106 paf 9: /**
10: @todo parser4:
11: - cache compiled code from request to request. to do that...
12: -#: make method definitions, @CLASS, @BASE, @USE instructions,
1.88 paf 13: which would be executed afterwards, and actions
14: now performed at compile time would be delayed to run time.
1.106 paf 15: -#: make cache expiration on time and on disk-change of class source
16: -#: in apache use subpools for compiled class storage
17: -#: in iis make up specialized Pool object for that
1.24 paf 18: */
19:
1.206 paf 20: #define YYSTYPE ArrayOperation*
1.9 paf 21: #define YYPARSE_PARAM pc
22: #define YYLEX_PARAM pc
23: #define YYDEBUG 1
1.106 paf 24: #define YYERROR_VERBOSE 1
1.206 paf 25: #define yyerror(msg) real_yyerror((Parse_control *)pc, msg)
1.9 paf 26: #define YYPRINT(file, type, value) yyprint(file, type, value)
1.1 paf 27:
1.206 paf 28: // includes
29:
1.1 paf 30: #include "compile_tools.h"
1.8 paf 31: #include "pa_value.h"
1.12 paf 32: #include "pa_request.h"
1.39 paf 33: #include "pa_vobject.h"
1.52 paf 34: #include "pa_vdouble.h"
1.98 paf 35: #include "pa_globals.h"
1.141 parser 36: #include "pa_vvoid.h"
1.200 paf 37: #include "pa_vmethod_frame.h"
1.39 paf 38:
1.206 paf 39: // defines
40:
1.97 paf 41: #define USE_CONTROL_METHOD_NAME "USE"
1.1 paf 42:
1.206 paf 43: // forwards
44:
45: static int real_yyerror(Parse_control* pc, char* s);
46: static void yyprint(FILE* file, int type, YYSTYPE value);
47: static int yylex(YYSTYPE* lvalp, void* pc);
1.1 paf 48:
1.8 paf 49: // local convinient inplace typecast & var
1.205 paf 50: #undef PC
1.206 paf 51: #define PC (*(Parse_control *)pc)
52: #undef POOL
1.114 paf 53: #define POOL (*PC.pool)
1.107 paf 54: #ifndef DOXYGEN
1.1 paf 55: %}
56:
57: %pure_parser
58:
1.13 paf 59: %token EON
1.4 paf 60: %token STRING
1.1 paf 61: %token BOGUS
1.55 paf 62:
1.58 paf 63: %token BAD_STRING_COMPARISON_OPERATOR
1.114 paf 64: %token BAD_HEX_LITERAL
1.171 parser 65: %token BAD_METHOD_DECL_START
1.193 paf 66: %token BAD_METHOD_PARAMETER_NAME_CHARACTER
1.209 paf 67: %token BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE
1.58 paf 68:
1.59 paf 69: %token LAND "&&"
1.58 paf 70: %token LOR "||"
1.193 paf 71: %token LXOR "!||"
72: %token NXOR "!|"
1.58 paf 73:
74: %token NLE "<="
75: %token NGE ">="
76: %token NEQ "=="
77: %token NNE "!="
1.195 paf 78: %token NSL "<<"
79: %token NSR ">>"
1.58 paf 80:
81: %token SLT "lt"
82: %token SGT "gt"
83: %token SLE "le"
84: %token SGE "ge"
85: %token SEQ "eq"
86: %token SNE "ne"
87:
1.67 paf 88: %token DEF "def"
89: %token IN "in"
90: %token FEXISTS "-f"
1.127 paf 91: %token DEXISTS "-d"
1.95 paf 92: %token IS "is"
1.67 paf 93:
1.57 paf 94: /* logical */
1.193 paf 95: %left "!||"
1.57 paf 96: %left "||"
97: %left "&&"
1.131 paf 98: %left '<' '>' "<=" ">=" "lt" "gt" "le" "ge"
99: %left "==" "!=" "eq" "ne"
100: %left "is" "def" "in" "-f" "-d"
1.57 paf 101:
102: /* bitwise */
1.193 paf 103: %left "!|"
1.131 paf 104: %left '|'
105: %left '&'
1.202 paf 106: %left "<<" ">>"
1.57 paf 107:
1.56 paf 108: /* numerical */
1.202 paf 109: %left '+' '-'
110: %left '*' '/' '\\' '%'
111: %left NUNARY /* unary - + */
112:
113: /* out-of-group */
114: %left '~' /* bitwise */
115: %left '!' /* logical */
1.1 paf 116:
117: %%
1.195 paf 118: all:
1.10 paf 119: one_big_piece {
1.206 paf 120: Method& method=*new Method(Method::CT_ANY,
1.81 paf 121: 0, 0, /*min, max numbered_params_count*/
1.75 paf 122: 0/*param_names*/, 0/*local_names*/,
123: $1/*parser_code*/, 0/*native_code*/);
1.206 paf 124: PC.cclass->add_method(PC.alias_method(main_method_name), method);
1.10 paf 125: }
126: | methods;
127:
128: methods: method | methods method;
129: one_big_piece: maybe_codes;
130:
1.34 paf 131: method: control_method | code_method;
132:
133: control_method: '@' STRING '\n'
1.132 paf 134: maybe_control_strings {
1.206 paf 135: const String& command=*LA2S(*$2);
1.34 paf 136: YYSTYPE strings_code=$4;
1.206 paf 137: if(strings_code->count()<1*OPERATIONS_PER_OPVALUE) {
1.114 paf 138: strcpy(PC.error, "@");
139: strcat(PC.error, command.cstr());
140: strcat(PC.error, " is empty");
1.37 paf 141: YYERROR;
142: }
1.74 paf 143: if(command==CLASS_NAME) {
1.188 paf 144: if(PC.cclass->base_class()) { // already changed from default?
1.114 paf 145: strcpy(PC.error, "class already have a name '");
146: strncat(PC.error, PC.cclass->name().cstr(), 100);
147: strcat(PC.error, "'");
1.73 paf 148: YYERROR;
149: }
1.206 paf 150: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.73 paf 151: // new class' name
1.206 paf 152: const String& name=*LA2S(*strings_code);
1.73 paf 153: // creating the class
1.206 paf 154: VStateless_class* cclass=new VClass;
155: PC.cclass=cclass;
156: PC.cclass->set_name(name);
1.73 paf 157: // append to request's classes
1.206 paf 158: PC.request.classes().put(name, cclass);
1.73 paf 159: } else {
1.206 paf 160: strcpy(PC.error, "@"CLASS_NAME" must contain only one line with class name (contains more then one)");
1.34 paf 161: YYERROR;
162: }
1.130 paf 163: } else if(command==USE_CONTROL_METHOD_NAME) {
1.206 paf 164: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE)
165: PC.request.use_file(PC.request.main_class, *LA2S(*strings_code, i));
1.130 paf 166: } else if(command==BASE_NAME) {
1.188 paf 167: if(PC.cclass->base_class()) { // already changed from default?
1.130 paf 168: strcpy(PC.error, "class already have a base '");
1.188 paf 169: strncat(PC.error, PC.cclass->base_class()->name().cstr(), 100);
1.130 paf 170: strcat(PC.error, "'");
171: YYERROR;
172: }
1.206 paf 173: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
174: const String& base_name=*LA2S(*strings_code);
175: if(Value* base_class_value=PC.request.classes().get(base_name)) {
176: // @CLASS == @BASE sanity check
177: if(VStateless_class *base_class=base_class_value->get_class()) {
178: if(PC.cclass==base_class) {
179: strcpy(PC.error, "@"CLASS_NAME" equals @"BASE_NAME);
180: YYERROR;
181: }
182: PC.cclass->get_class()->set_base(base_class);
183: } else { // they asked to derive from a class without methods ['env' & co]
184: strcpy(PC.error, base_name.cstr());
185: strcat(PC.error, ": you can not derive from this class in @"BASE_NAME);
186: YYERROR;
187: }
188: } else {
1.130 paf 189: strcpy(PC.error, base_name.cstr());
190: strcat(PC.error, ": undefined class in @"BASE_NAME);
1.73 paf 191: YYERROR;
192: }
1.34 paf 193: } else {
1.130 paf 194: strcpy(PC.error, "@"BASE_NAME" must contain sole name");
1.34 paf 195: YYERROR;
196: }
1.130 paf 197: } else {
198: strcpy(PC.error, "'");
199: strncat(PC.error, command.cstr(), MAX_STRING/2);
200: strcat(PC.error, "' invalid special name. valid names are "
201: "'"CLASS_NAME"', '"USE_CONTROL_METHOD_NAME"' and '"BASE_NAME"'");
202: YYERROR;
1.34 paf 203: }
204: };
1.132 paf 205: maybe_control_strings: empty | control_strings;
1.206 paf 206: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2) };
1.37 paf 207: control_string: maybe_string '\n';
208: maybe_string: empty | STRING;
1.34 paf 209:
1.208 paf 210: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n' {
211: PC.explicit_result=false;
1.206 paf 212: const String& name=*LA2S(*$2);
1.10 paf 213:
214: YYSTYPE params_names_code=$3;
1.206 paf 215: ArrayString* params_names=0;
216: if(int size=params_names_code->count()) {
217: params_names=new ArrayString;
218: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
219: *params_names+=LA2S(*params_names_code, i);
1.75 paf 220: }
1.10 paf 221:
222: YYSTYPE locals_names_code=$4;
1.206 paf 223: ArrayString* locals_names=0;
224: if(int size=locals_names_code->count()) {
225: locals_names=new ArrayString;
1.208 paf 226: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE) {
227: const String* local_name=LA2S(*locals_names_code, i);
228: if(*local_name==RESULT_VAR_NAME)
229: PC.explicit_result=true;
230: else
231: *locals_names+=local_name;
232: }
1.75 paf 233: }
1.10 paf 234:
1.208 paf 235: Method* method=new Method(
1.206 paf 236: //name,
1.122 paf 237: Method::CT_ANY,
1.81 paf 238: 0, 0/*min,max numbered_params_count*/,
1.76 paf 239: params_names, locals_names,
1.208 paf 240: 0/*to be filled later in next {} */, 0);
241: PC.cclass->add_method(PC.alias_method(name), *method);
242: *reinterpret_cast<Method**>(&$$)=method;
243:
244: // todo: check [][;result;]
245: } maybe_codes {
246: // fill in the code
247: reinterpret_cast<Method*>($7)->parser_code=$8;
1.8 paf 248: };
1.10 paf 249:
250: maybe_bracketed_strings: empty | bracketed_maybe_strings;
251: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
252: maybe_strings: empty | strings;
1.206 paf 253: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3) };
1.10 paf 254:
255: maybe_comment: empty | STRING;
1.1 paf 256:
257: /* codes */
258:
1.10 paf 259: maybe_codes: empty | codes;
260:
1.206 paf 261: codes: code | codes code { $$=$1; P(*$$, *$2) };
1.81 paf 262: code: write_string | action;
1.209 paf 263: action: get | put | call;
1.1 paf 264:
265: /* get */
266:
1.64 paf 267: get: get_value {
1.184 paf 268: $$=$1; /* stack: resulting value */
1.206 paf 269: changetail_or_append(*$$,
1.186 paf 270: OP_GET_ELEMENT, false, /*->*/OP_GET_ELEMENT__WRITE,
271: /*or */OP_WRITE_VALUE
1.184 paf 272: ); /* value=pop; wcontext.write(value) */
1.1 paf 273: };
1.163 parser 274: get_value: '$' get_name_value { $$=$2 };
1.64 paf 275: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 276: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 277: name_without_curly_rdive:
278: name_without_curly_rdive_read
279: | name_without_curly_rdive_class;
1.19 paf 280: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 281: $$=N();
282: ArrayOperation* diving_code=$1;
283: const String* first_name=LA2S(*diving_code);
1.179 paf 284: // self.xxx... -> xxx...
1.206 paf 285: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 286: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.206 paf 287: O(*yyval, OP_WITH_SELF); /* stack: starting context */
288: P(*yyval, *diving_code,
1.22 paf 289: /* skip over... */
1.206 paf 290: diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.22 paf 291: } else {
1.206 paf 292: O(*yyval, OP_WITH_READ); /* stack: starting context */
1.179 paf 293:
1.201 paf 294: // ^if ELEMENT -> ^if ELEMENT_OR_OPERATOR
1.206 paf 295: // OP_VALUE+origin+string+OP_GET_ELEMENT. -> OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
296: if(PC.in_call_value && diving_code->count()==4)
297: diving_code->put(4-1, OP_GET_ELEMENT_OR_OPERATOR);
298: P(*$$, *diving_code);
1.22 paf 299: }
300: /* diving code; stack: current context */
1.1 paf 301: };
1.206 paf 302: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2) };
303: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2) };
1.1 paf 304:
305: /* put */
306:
1.81 paf 307: put: '$' name_expr_wdive construct {
1.20 paf 308: $$=$2; /* stack: context,name */
1.206 paf 309: P(*$$, *$3); /* stack: context,name,constructor_value */
1.20 paf 310: };
1.44 paf 311: name_expr_wdive:
1.157 parser 312: name_expr_wdive_root
313: | name_expr_wdive_write
1.44 paf 314: | name_expr_wdive_class;
1.157 parser 315: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 316: $$=N();
317: ArrayOperation* diving_code=$1;
318: const String* first_name=LA2S(*diving_code);
1.179 paf 319: // $self.xxx... -> $xxx...
1.206 paf 320: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 321: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.206 paf 322: O(*$$, OP_WITH_SELF); /* stack: starting context */
323: P(*$$, *diving_code,
1.23 paf 324: /* skip over... */
1.206 paf 325: diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.23 paf 326: } else {
1.206 paf 327: O(*$$, OP_WITH_ROOT); /* stack: starting context */
328: P(*$$, *diving_code);
1.23 paf 329: }
330: /* diving code; stack: current context */
1.156 parser 331: };
1.157 parser 332: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 333: $$=N();
334: O(*$$, OP_WITH_WRITE); /* stack: starting context */
335: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 336: };
1.206 paf 337: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2) };
1.20 paf 338:
1.149 parser 339: construct:
1.163 parser 340: construct_square
341: | construct_round
342: | construct_curly
1.149 parser 343: ;
1.211 paf 344: construct_square: '[' {
345: // allow $result_or_other_variable[ letters here any time ]
346: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
347: } any_constructor_code_value {
1.213 paf 348: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.211 paf 349: } ']' {
1.149 parser 350: // stack: context, name
1.211 paf 351: $$=$3; // stack: context, name, value
1.206 paf 352: O(*$$, OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 353: }
354: ;
1.149 parser 355: construct_round: '(' expr_value ')' {
1.206 paf 356: $$=N();
357: O(*$$, OP_PREPARE_TO_EXPRESSION);
1.149 parser 358: // stack: context, name
1.206 paf 359: P(*$$, *$2); // stack: context, name, value
360: O(*$$, OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 361: }
1.52 paf 362: ;
1.149 parser 363: construct_curly: '{' maybe_codes '}' {
364: // stack: context, name
1.206 paf 365: $$=N();
366: OA(*$$, OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 367: };
368:
1.55 paf 369: any_constructor_code_value:
1.157 parser 370: void_value /* optimized $var[] case */
1.52 paf 371: | STRING /* optimized $var[STRING] case */
1.55 paf 372: | constructor_code_value /* $var[something complex] */
1.1 paf 373: ;
1.55 paf 374: constructor_code_value: constructor_code {
1.206 paf 375: $$=N();
376: OA(*$$, OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 377: /* some code that writes to that context */
378: /* context=pop; stack: context.value() */
1.1 paf 379: };
1.55 paf 380: constructor_code: codes__excluding_sole_str_literal;
1.206 paf 381: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 382:
1.1 paf 383: /* call */
384:
1.66 paf 385: call: call_value {
386: $$=$1; /* stack: value */
1.206 paf 387: changetail_or_append(*$$,
1.186 paf 388: OP_CALL, true, /*->*/ OP_CALL__WRITE,
389: /*or */OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.66 paf 390: };
1.177 paf 391: call_value: '^' {
1.180 paf 392: PC.in_call_value=true;
1.177 paf 393: }
394: call_name {
1.180 paf 395: PC.in_call_value=false;
1.177 paf 396: }
1.154 parser 397: store_params EON { /* ^field.$method{vasya} */
398: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 399:
1.154 parser 400: YYSTYPE params_code=$5;
1.206 paf 401: if(params_code->count()==4) { // probably [] case. [OP_VALUE+origin+Void+STORE_PARAM]
402: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.140 parser 403: if(!value->is_defined()) // value is VVoid?
1.123 paf 404: params_code=0; // ^zzz[] case. don't append lone empty param.
1.186 paf 405: }
406: /* stack: context, method_junction */
1.206 paf 407: OA(*$$, OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
1.1 paf 408: };
409:
1.43 paf 410: call_name: name_without_curly_rdive;
1.38 paf 411:
1.206 paf 412: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2) };
1.69 paf 413: store_param:
414: store_square_param
415: | store_round_param
416: | store_curly_param
1.31 paf 417: ;
1.210 paf 418: store_square_param: '[' {
1.211 paf 419: // allow ^call[ letters here any time ]
1.210 paf 420: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
421: } store_code_param_parts {
1.213 paf 422: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.210 paf 423: } ']' {$$=$3};
1.69 paf 424: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 425: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 426: store_code_param_parts:
427: store_code_param_part
1.206 paf 428: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 429: ;
430: store_expr_param_parts:
431: store_expr_param_part
1.206 paf 432: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 433: ;
1.94 paf 434: store_curly_param_parts:
435: store_curly_param_part
1.206 paf 436: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3) }
1.94 paf 437: ;
1.120 paf 438: store_code_param_part: code_param_value {
1.32 paf 439: $$=$1;
1.206 paf 440: O(*$$, OP_STORE_PARAM);
1.120 paf 441: };
1.214 paf 442: store_expr_param_part: expr_value {
443: YYSTYPE expr_code=$1;
1.215 ! paf 444: if(expr_code->count()==3
! 445: && (*expr_code)[0].code==OP_VALUE) { // optimizing (double) case. [OP_VALUE+origin+Double]
1.214 paf 446: $$=expr_code;
447: O(*$$, OP_STORE_PARAM); // no evaluating
448: } else {
449: ArrayOperation* code=N();
450: O(*code, OP_PREPARE_TO_EXPRESSION);
451: P(*code, *expr_code);
452: O(*code, OP_WRITE_EXPR_RESULT);
453: $$=N();
454: OA(*$$, OP_EXPR_CODE__STORE_PARAM, code);
455: }
1.69 paf 456: };
1.94 paf 457: store_curly_param_part: maybe_codes {
1.206 paf 458: $$=N();
459: OA(*$$, OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 460: };
1.120 paf 461: code_param_value:
1.157 parser 462: void_value /* optimized [;...] case */
1.120 paf 463: | STRING /* optimized [STRING] case */
464: | constructor_code_value /* [something complex] */
465: ;
1.1 paf 466:
467: /* name */
468:
1.206 paf 469: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 470:
1.206 paf 471: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 472: name_step: name_advance1 '.';
473: name_advance1: name_expr_value {
1.177 paf 474: // we know that name_advance1 not called from ^xxx context
475: // so we'll not check for operator call possibility as we do in name_advance2
476:
1.1 paf 477: /* stack: context */
478: $$=$1; /* stack: context,name */
1.206 paf 479: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 480: };
481: name_advance2: name_expr_value {
482: /* stack: context */
483: $$=$1; /* stack: context,name */
1.206 paf 484: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 485: }
1.4 paf 486: | STRING BOGUS
1.1 paf 487: ;
488: name_expr_value:
1.4 paf 489: STRING /* subname_is_const */
1.1 paf 490: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 491: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 492: | name_square_code_value /* [codes] */
1.1 paf 493: ;
494: name_expr_subvar_value: '$' subvar_ref_name_rdive {
495: $$=$2;
1.206 paf 496: O(*$$, OP_GET_ELEMENT);
1.1 paf 497: };
1.4 paf 498: name_expr_with_subvar_value: STRING subvar_get_writes {
1.206 paf 499: ArrayOperation* code;
1.183 paf 500: {
1.206 paf 501: change_string_literal_to_write_string_literal(*(code=$1));
502: P(*code, *$2);
1.183 paf 503: }
1.206 paf 504: $$=N();
505: OA(*$$, OP_STRING_POOL, code);
1.1 paf 506: };
1.212 paf 507: name_square_code_value: '[' {
508: // allow $result_or_other_variable[ letters here any time ]
509: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
510: } codes {
1.213 paf 511: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.212 paf 512: } ']' {
1.206 paf 513: $$=N();
1.212 paf 514: OA(*$$, OP_OBJECT_POOL, $3); /* stack: empty write context */
1.183 paf 515: /* some code that writes to that context */
516: /* context=pop; stack: context.value() */
1.160 parser 517: };
1.154 parser 518: subvar_ref_name_rdive: STRING {
1.206 paf 519: $$=N();
520: O(*$$, OP_WITH_READ);
521: P(*$$, *$1);
1.1 paf 522: };
1.206 paf 523: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 524: subvar__get_write: '$' subvar_ref_name_rdive {
525: $$=$2;
1.206 paf 526: O(*$$, OP_GET_ELEMENT__WRITE);
1.42 paf 527: };
528:
1.154 parser 529: class_prefix:
530: class_static_prefix
531: | class_constructor_prefix
532: ;
1.155 parser 533: class_static_prefix: STRING ':' {
534: $$=$1; // stack: class name string
1.206 paf 535: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
536: if(VStateless_class* base=PC.cclass->base_class()) {
537: change_string_literal_value(*$$, base->name());
1.189 paf 538: } else {
539: strcpy(PC.error, "no base class declared");
540: YYERROR;
541: }
542: }
1.206 paf 543: O(*$$, OP_GET_CLASS);
1.155 parser 544: };
545: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 546: $$=$1;
1.180 paf 547: if(!PC.in_call_value) {
1.154 parser 548: strcpy(PC.error, ":: not allowed here");
549: YYERROR;
550: }
1.206 paf 551: O(*$$, OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 552: };
553:
1.53 paf 554:
1.56 paf 555: /* expr */
1.53 paf 556:
1.214 paf 557: expr_value: expr;
1.56 paf 558: expr:
1.214 paf 559: double_or_STRING
1.64 paf 560: | get_value
1.66 paf 561: | call_value
1.64 paf 562: | '"' string_inside_quotes_value '"' { $$ = $2; }
1.145 parser 563: | '\'' string_inside_quotes_value '\'' { $$ = $2; }
1.60 paf 564: | '(' expr ')' { $$ = $2; }
565: /* stack: operand // stack: @operand */
1.206 paf 566: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP_NEG) }
1.202 paf 567: | '+' expr %prec NUNARY { $$=$2 }
1.206 paf 568: | '~' expr { $$=$2; O(*$$, OP_INV) }
569: | '!' expr { $$=$2; O(*$$, OP_NOT) }
570: | "def" expr { $$=$2; O(*$$, OP_DEF) }
571: | "in" expr { $$=$2; O(*$$, OP_IN) }
572: | "-f" expr { $$=$2; O(*$$, OP_FEXISTS) }
573: | "-d" expr { $$=$2; O(*$$, OP_DEXISTS) }
1.60 paf 574: /* stack: a,b // stack: a@b */
1.206 paf 575: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP_SUB) }
576: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP_ADD) }
577: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MUL) }
578: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP_DIV) }
579: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MOD) }
580: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP_INTDIV) }
581: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SL) }
582: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SR) }
583: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_AND) }
584: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_OR) }
585: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_XOR) }
586: | expr "&&" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_AND) }
587: | expr "||" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_OR) }
588: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP_LOG_XOR) }
589: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LT) }
590: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GT) }
591: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LE) }
592: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GE) }
593: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_EQ) }
594: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_NE) }
595: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LT) }
596: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GT) }
597: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LE) }
598: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GE) }
599: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_EQ) }
600: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_NE) }
601: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP_IS) }
1.56 paf 602: ;
1.214 paf 603:
604: double_or_STRING: STRING {
605: // optimized from OP_STRING->OP_VALUE for doubles
606: maybe_change_string_literal_to_double_literal(*($$=$1));
607: };
1.55 paf 608:
1.65 paf 609: string_inside_quotes_value: maybe_codes {
1.206 paf 610: $$=N();
611: OA(*$$, OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 612: /* some code that writes to that context */
613: /* context=pop; stack: context.get_string() */
1.53 paf 614: };
1.1 paf 615:
1.27 paf 616: /* basics */
1.1 paf 617:
1.81 paf 618: write_string: STRING {
1.209 paf 619: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
620: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 621: };
622:
1.206 paf 623: void_value: /* empty */ { $$=VL(new VVoid(), 0, 0, 0) };
624: empty: /* empty */ { $$=N() };
1.1 paf 625:
626: %%
1.105 paf 627: #endif
1.1 paf 628:
629: /*
630: 000$111(2222)00
631: 000$111{3333}00
1.9 paf 632: $,^: push,=0
1.1 paf 633: 1:( { break=pop
634: 2:( ) pop
635: 3:{ } pop
636:
637: 000^111(2222)4444{33333}4000
1.9 paf 638: $,^: push,=0
1.1 paf 639: 1:( { break=pop
640: 2:( )=4
641: 3:{ }=4
642: 4:[^({]=pop
643: */
644:
1.206 paf 645: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
646: pc.source--;
647: if(pc.pos.col==0) {
648: --pc.pos.line; pc.pos.col=last_line_end_col;
649: } else
650: --pc.pos.col;
651:
652: }
653: static int yylex(YYSTYPE *lvalp, void *apc) {
654: register Parse_control& pc=*static_cast<Parse_control*>(apc);
655:
656: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 657: #define RC {result=c; goto break2; }
1.1 paf 658:
1.206 paf 659: register int c;
660: int result;
1.1 paf 661:
1.206 paf 662: if(pc.pending_state) {
663: result=pc.pending_state;
664: pc.pending_state=0;
1.1 paf 665: return result;
666: }
667:
1.206 paf 668: const char *begin=pc.source;
669: Pos begin_pos=pc.pos;
1.91 paf 670: const char *end;
1.67 paf 671: int skip_analized=0;
1.50 paf 672: while(true) {
1.206 paf 673: c=*(end=(pc.source++));
674: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 675:
1.208 paf 676: if(c=='\n')
1.206 paf 677: pc.pos_next_line();
1.208 paf 678: else
1.206 paf 679: pc.pos_next_c(c);
1.208 paf 680: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 681:
1.208 paf 682: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 683: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 684: // @SPECIAL
685: // ...
686: // @<here =
1.206 paf 687: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 688: } // continuing checks
1.206 paf 689: if(pc.ls==LS_USER) {
690: push_LS(pc, LS_DEF_NAME);
1.171 parser 691: RC;
1.175 paf 692: } else // @ in first column inside some code [when could that be?]
1.171 parser 693: result=BAD_METHOD_DECL_START;
694: goto break2;
1.209 paf 695: }
696: if(c=='^') {
1.206 paf 697: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 698: // handle after-method situation
1.206 paf 699: pop_LS(pc);
1.203 paf 700: result=EON;
701: skip_analized=-1; // return to punctuation afterwards to assure it's literality
702: goto break2;
703: }
1.206 paf 704: switch(pc.ls) {
1.169 parser 705: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
706: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
707: case LS_VAR_NAME_SIMPLE_WITH_COLON:
708: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
709: case LS_VAR_NAME_CURLY:
710: case LS_METHOD_NAME:
1.194 paf 711: case LS_USER_COMMENT:
1.169 parser 712: case LS_DEF_COMMENT:
713: // no literals in names, please
714: break;
715: default:
1.206 paf 716: switch(*pc.source) {
1.165 parser 717: // ^escaping some punctuators
1.48 paf 718: case '^': case '$': case ';':
1.126 paf 719: case '(': case ')':
1.48 paf 720: case '[': case ']':
721: case '{': case '}':
1.172 parser 722: case '"': case ':':
1.40 paf 723: if(end!=begin) {
1.206 paf 724: if(!pc.string_start)
725: pc.string_start=begin_pos;
1.40 paf 726: // append piece till ^
1.206 paf 727: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 728: }
1.63 paf 729: // reset piece 'begin' position & line
1.206 paf 730: begin=pc.source; // ->punctuation
731: begin_pos=pc.pos;
1.203 paf 732: // skip over _ after ^
1.206 paf 733: pc.source++; pc.pos.col++;
1.203 paf 734: // skip analysis = forced literal
735: continue;
1.114 paf 736:
737: // converting ^#HH into char(hex(HH))
738: case '#':
739: if(end!=begin) {
1.206 paf 740: if(!pc.string_start)
741: pc.string_start=begin_pos;
1.114 paf 742: // append piece till ^
1.206 paf 743: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 744: }
745: // #HH ?
1.206 paf 746: if(pc.source[0]=='#' && pc.source[1] && pc.source[2]) {
747: char c=
748: hex_value[(unsigned char)pc.source[1]]*0x10+
749: hex_value[(unsigned char)pc.source[2]];
750: if(c==0) {
1.114 paf 751: result=BAD_HEX_LITERAL;
752: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
753: }
754: // append char(hex(HH))
1.206 paf 755: pc.string.append(c);
1.114 paf 756: // skip over ^#HH
1.206 paf 757: pc.source+=3;
758: pc.pos.col+=3;
1.114 paf 759: // reset piece 'begin' position & line
1.206 paf 760: begin=pc.source; // ->after ^#HH
761: begin_pos=pc.pos;
1.203 paf 762: // skip analysis = forced literal
1.114 paf 763: continue;
764: }
765: break;
1.1 paf 766: }
1.169 parser 767: break;
1.203 paf 768: }
1.169 parser 769: }
1.113 paf 770: // #comment start skipping
1.206 paf 771: if(c=='#' && pc.pos.col==1) {
1.112 paf 772: if(end!=begin) {
1.206 paf 773: if(!pc.string_start)
774: pc.string_start=begin_pos;
1.112 paf 775: // append piece till #
1.206 paf 776: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 777: }
778: // fall into COMMENT lexical state [wait for \n]
1.206 paf 779: push_LS(pc, LS_USER_COMMENT);
1.175 paf 780: continue;
1.112 paf 781: }
1.206 paf 782: switch(pc.ls) {
1.10 paf 783:
784: // USER'S = NOT OURS
1.1 paf 785: case LS_USER:
1.206 paf 786: case LS_NAME_SQUARE_PART: // name.[here].xxx
787: if(pc.trim_bof)
1.153 parser 788: switch(c) {
789: case '\n': case ' ': case '\t':
1.206 paf 790: begin=pc.source;
791: begin_pos=pc.pos;
1.152 parser 792: continue; // skip it
1.153 parser 793: default:
1.206 paf 794: pc.trim_bof=false;
1.152 parser 795: }
1.48 paf 796: switch(c) {
797: case '$':
1.206 paf 798: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 799: RC;
800: case '^':
1.206 paf 801: push_LS(pc, LS_METHOD_NAME);
1.48 paf 802: RC;
1.166 parser 803: case ']':
1.206 paf 804: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 805: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 806: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 807: RC;
808: }
1.160 parser 809: break;
1.166 parser 810: case '[': // $name.[co<[>de]
1.206 paf 811: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 812: lexical_brackets_nestage++;
1.161 parser 813: break;
1.112 paf 814: }
1.209 paf 815: if(pc.explicit_result && c)
816: switch(c) {
817: case '\n': case ' ': case '\t':
818: begin=pc.source;
819: begin_pos=pc.pos;
820: continue; // skip it
821: default:
822: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
823: goto break2;
824: }
1.112 paf 825: break;
826:
827: // #COMMENT
1.194 paf 828: case LS_USER_COMMENT:
1.112 paf 829: if(c=='\n') {
830: // skip comment
1.206 paf 831: begin=pc.source;
832: begin_pos=pc.pos;
1.112 paf 833:
1.206 paf 834: pop_LS(pc);
1.112 paf 835: continue;
1.1 paf 836: }
1.48 paf 837: break;
838:
839: // STRING IN EXPRESSION
1.145 parser 840: case LS_EXPRESSION_STRING_QUOTED:
841: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 842: switch(c) {
843: case '"':
1.145 parser 844: case '\'':
845: if(
1.206 paf 846: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
847: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
848: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 849: RC;
850: }
851: break;
1.48 paf 852: case '$':
1.206 paf 853: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 854: RC;
855: case '^':
1.206 paf 856: push_LS(pc, LS_METHOD_NAME);
1.48 paf 857: RC;
1.10 paf 858: }
859: break;
860:
861: // METHOD DEFINITION
862: case LS_DEF_NAME:
1.48 paf 863: switch(c) {
864: case '[':
1.206 paf 865: pc.ls=LS_DEF_PARAMS;
1.48 paf 866: RC;
867: case '\n':
1.206 paf 868: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 869: RC;
1.10 paf 870: }
871: break;
1.48 paf 872:
1.10 paf 873: case LS_DEF_PARAMS:
1.48 paf 874: switch(c) {
1.192 paf 875: case '$': // common error
1.193 paf 876: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
877: goto break2;
1.48 paf 878: case ';':
879: RC;
880: case ']':
1.206 paf 881: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 882: RC;
1.49 paf 883: case '\n': // wrong. bailing out
1.206 paf 884: pop_LS(pc);
1.48 paf 885: RC;
1.10 paf 886: }
887: break;
1.48 paf 888:
1.10 paf 889: case LS_DEF_LOCALS:
1.48 paf 890: switch(c) {
891: case '[':
892: case ';':
893: RC;
894: case ']':
1.206 paf 895: pc.ls=LS_DEF_COMMENT;
1.48 paf 896: RC;
897: case '\n': // wrong. bailing out
1.206 paf 898: pop_LS(pc);
1.48 paf 899: RC;
1.10 paf 900: }
901: break;
1.48 paf 902:
1.10 paf 903: case LS_DEF_COMMENT:
904: if(c=='\n') {
1.206 paf 905: pop_LS(pc);
1.48 paf 906: RC;
1.37 paf 907: }
908: break;
909:
1.48 paf 910: case LS_DEF_SPECIAL_BODY:
1.175 paf 911: if(c=='\n')
1.48 paf 912: RC;
913: break;
914:
915: // (EXPRESSION)
1.69 paf 916: case LS_VAR_ROUND:
917: case LS_METHOD_ROUND:
1.48 paf 918: switch(c) {
919: case ')':
920: if(--lexical_brackets_nestage==0)
1.206 paf 921: if(pc.ls==LS_METHOD_ROUND) // method round param ended
922: pc.ls=LS_METHOD_AFTER; // look for method end
923: else // pc.ls==LS_VAR_ROUND // variable constructor ended
924: pop_LS(pc); // return to normal life
1.48 paf 925: RC;
1.194 paf 926: case '#': // comment start skipping
927: if(end!=begin) {
1.206 paf 928: if(!pc.string_start)
929: pc.string_start=begin_pos;
1.194 paf 930: // append piece till #
1.206 paf 931: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 932: }
933: // fall into COMMENT lexical state [wait for \n]
1.206 paf 934: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 935: lexical_brackets_nestage=1;
936: continue;
1.48 paf 937: case '$':
1.206 paf 938: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 939: RC;
940: case '^':
1.206 paf 941: push_LS(pc, LS_METHOD_NAME);
1.48 paf 942: RC;
943: case '(':
944: lexical_brackets_nestage++;
945: RC;
1.67 paf 946: case '-':
1.206 paf 947: switch(*pc.source) {
1.127 paf 948: case 'f': // -f
1.67 paf 949: skip_analized=1;
950: result=FEXISTS;
1.127 paf 951: goto break2;
952: case 'd': // -d
953: skip_analized=1;
954: result=DEXISTS;
955: goto break2;
1.191 paf 956: default: // minus
1.67 paf 957: result=c;
1.127 paf 958: goto break2;
959: }
1.67 paf 960: goto break2;
1.173 paf 961: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 962: case '~':
1.48 paf 963: case ';':
964: RC;
1.193 paf 965: case '&': case '|':
1.206 paf 966: if(*pc.source==c) { // && ||
1.193 paf 967: result=c=='&'?LAND:LOR;
1.67 paf 968: skip_analized=1;
1.58 paf 969: } else
970: result=c;
971: goto break2;
1.193 paf 972: case '!':
1.206 paf 973: switch(pc.source[0]) {
1.193 paf 974: case '|': // !| !||
975: skip_analized=1;
1.206 paf 976: if(pc.source[1]=='|') {
1.193 paf 977: skip_analized++;
978: result=LXOR;
979: } else
980: result=NXOR;
981: goto break2;
982: case '=': // !=
983: skip_analized=1;
984: result=NNE;
985: goto break2;
986: }
987: RC;
1.195 paf 988:
989: case '<': // <<, <=, <
1.206 paf 990: switch(*pc.source) {
1.195 paf 991: case '<': // <[<]
992: skip_analized=1; result=NSL; break;
993: case '=': // <[=]
994: skip_analized=1; result=NLE; break;
995: default: // <[]
996: result=c; break;
997: }
998: goto break2;
999: case '>': // >>, >=, >
1.206 paf 1000: switch(*pc.source) {
1.195 paf 1001: case '>': // >[>]
1002: skip_analized=1; result=NSR; break;
1003: case '=': // >[=]
1004: skip_analized=1; result=NGE; break;
1005: default: // >[]
1006: result=c; break;
1007: }
1008: goto break2;
1009: case '=': // ==
1.206 paf 1010: switch(*pc.source) {
1.195 paf 1011: case '=': // =[=]
1012: skip_analized=1; result=NEQ; break;
1013: default: // =[]
1014: result=c; break; // not used now
1015: }
1.58 paf 1016: goto break2;
1.195 paf 1017:
1.48 paf 1018: case '"':
1.206 paf 1019: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1020: RC;
1021: case '\'':
1.206 paf 1022: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1023: RC;
1.50 paf 1024: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1025: if(end==begin) // right after whitespace
1.206 paf 1026: if(isspace(pc.source[1])) {
1027: switch(*pc.source) {
1.117 paf 1028: // case '?': // ok [and bad cases, yacc would bark at them]
1029: case 't': // lt gt [et nt]
1030: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1031: skip_analized=1;
1032: goto break2;
1033: case 'e': // le ge ne [ee]
1034: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1035: skip_analized=1;
1036: goto break2;
1037: case 'q': // eq [lq gq nq]
1038: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1039: skip_analized=1;
1040: goto break2;
1041: }
1.67 paf 1042: }
1043: break;
1044: case 'i':
1045: if(end==begin) // right after whitespace
1.206 paf 1046: if(isspace(pc.source[1])) {
1047: switch(pc.source[0]) {
1.117 paf 1048: case 'n': // in
1.95 paf 1049: skip_analized=1;
1050: result=IN;
1051: goto break2;
1.117 paf 1052: case 's': // is
1.95 paf 1053: skip_analized=1;
1054: result=IS;
1055: goto break2;
1056: }
1.67 paf 1057: }
1058: break;
1059: case 'd':
1060: if(end==begin) // right after whitespace
1.206 paf 1061: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.67 paf 1062: skip_analized=2;
1063: result=DEF;
1.58 paf 1064: goto break2;
1.50 paf 1065: }
1.48 paf 1066: break;
1067: case ' ': case '\t': case '\n':
1.63 paf 1068: if(end!=begin) { // there were a string after previous operator?
1069: result=0; // return that string
1070: goto break2;
1.48 paf 1071: }
1.63 paf 1072: // that's a leading|traling space or after-operator-space
1073: // ignoring it
1074: // reset piece 'begin' position & line
1.206 paf 1075: begin=pc.source; // after whitespace char
1076: begin_pos=pc.pos;
1.48 paf 1077: continue;
1.1 paf 1078: }
1079: break;
1.194 paf 1080: case LS_EXPRESSION_COMMENT:
1081: if(c=='(')
1082: lexical_brackets_nestage++;
1083:
1.206 paf 1084: switch(*pc.source) {
1.194 paf 1085: case '\n': case ')':
1.206 paf 1086: if(*pc.source==')')
1.194 paf 1087: if(--lexical_brackets_nestage!=0)
1088: continue;
1089:
1090: // skip comment
1.206 paf 1091: begin=pc.source;
1092: begin_pos=pc.pos;
1.194 paf 1093:
1.206 paf 1094: pop_LS(pc);
1.194 paf 1095: continue;
1096: }
1097: break;
1.1 paf 1098:
1.10 paf 1099: // VARIABLE GET/PUT/WITH
1.166 parser 1100: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1101: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1102: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1103: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1104: if(
1.206 paf 1105: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1106: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1107: // name in expr ends also before
1.48 paf 1108: switch(c) {
1.181 paf 1109: // expression minus
1.92 paf 1110: case '-':
1.181 paf 1111: // expression integer division
1112: case '\\':
1.206 paf 1113: pop_LS(pc);
1114: pc.ungetc();
1.48 paf 1115: result=EON;
1116: goto break2;
1117: }
1118: }
1.166 parser 1119: if(
1.206 paf 1120: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1121: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1122: // name already has ':', stop before next
1123: switch(c) {
1124: case ':':
1.206 paf 1125: pop_LS(pc);
1126: pc.ungetc();
1.142 parser 1127: result=EON;
1128: goto break2;
1129: }
1130: }
1.48 paf 1131: switch(c) {
1132: case 0:
1133: case ' ': case '\t': case '\n':
1134: case ';':
1.126 paf 1135: case ']': case '}': case ')':
1136: case '"': case '\'':
1.139 parser 1137: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1138: case '+': case '*': case '/': case '%':
1139: case '&': case '|':
1140: case '=': case '!':
1.99 paf 1141: // common delimiters
1.190 paf 1142: case ',': case '?': case '#':
1.139 parser 1143: // before call
1144: case '^':
1.206 paf 1145: pop_LS(pc);
1146: pc.ungetc();
1.13 paf 1147: result=EON;
1.1 paf 1148: goto break2;
1.48 paf 1149: case '[':
1.162 parser 1150: // $name.<[>code]
1.206 paf 1151: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1152: end[-1]=='$'/*was start of get*/ ||
1153: end[-1]==':'/*was class name delim */ ||
1154: end[-1]=='.'/*was name delim */
1.162 parser 1155: )) {
1.206 paf 1156: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1157: lexical_brackets_nestage=1;
1158: RC;
1159: }
1.206 paf 1160: pc.ls=LS_VAR_SQUARE;
1.1 paf 1161: lexical_brackets_nestage=1;
1.48 paf 1162: RC;
1163: case '{':
1164: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1165: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1166: } else {
1.206 paf 1167: pc.ls=LS_VAR_CURLY;
1.48 paf 1168: lexical_brackets_nestage=1;
1169: }
1.69 paf 1170:
1.48 paf 1171: RC;
1172: case '(':
1.206 paf 1173: pc.ls=LS_VAR_ROUND;
1.1 paf 1174: lexical_brackets_nestage=1;
1.48 paf 1175: RC;
1176: case '.': // name part delim
1177: case '$': // name part subvar
1.160 parser 1178: case ':': // class<:>name
1.166 parser 1179: // go to _WITHOUT_COLON state variant...
1.206 paf 1180: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1181: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1182: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1183: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1184: // ...stop before next ':'
1.48 paf 1185: RC;
1.1 paf 1186: }
1187: break;
1.48 paf 1188:
1.1 paf 1189: case LS_VAR_NAME_CURLY:
1.48 paf 1190: switch(c) {
1.162 parser 1191: case '[':
1.166 parser 1192: // ${name.<[>code]}
1.206 paf 1193: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1194: lexical_brackets_nestage=1;
1195: RC;
1.48 paf 1196: case '}': // ${name} finished, restoring LS
1.206 paf 1197: pop_LS(pc);
1.48 paf 1198: RC;
1199: case '.': // name part delim
1200: case '$': // name part subvar
1201: case ':': // ':name' or 'class:name'
1202: RC;
1.1 paf 1203: }
1204: break;
1.48 paf 1205:
1206: case LS_VAR_SQUARE:
1207: switch(c) {
1208: case '$':
1.206 paf 1209: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1210: RC;
1211: case '^':
1.206 paf 1212: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1213: RC;
1214: case ']':
1.1 paf 1215: if(--lexical_brackets_nestage==0) {
1.206 paf 1216: pop_LS(pc);
1.48 paf 1217: RC;
1.1 paf 1218: }
1.48 paf 1219: break;
1220: case ';': // operator_or_fmt;value delim
1221: RC;
1222: case '[':
1223: lexical_brackets_nestage++;
1224: break;
1.1 paf 1225: }
1226: break;
1.48 paf 1227:
1.1 paf 1228: case LS_VAR_CURLY:
1.48 paf 1229: switch(c) {
1230: case '$':
1.206 paf 1231: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1232: RC;
1233: case '^':
1.206 paf 1234: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1235: RC;
1236: case '}':
1.1 paf 1237: if(--lexical_brackets_nestage==0) {
1.206 paf 1238: pop_LS(pc);
1.48 paf 1239: RC;
1.1 paf 1240: }
1.48 paf 1241: break;
1242: case '{':
1.1 paf 1243: lexical_brackets_nestage++;
1.48 paf 1244: break;
1245: }
1.1 paf 1246: break;
1247:
1.10 paf 1248: // METHOD CALL
1.1 paf 1249: case LS_METHOD_NAME:
1.48 paf 1250: switch(c) {
1251: case '[':
1.166 parser 1252: // ^name.<[>code].xxx
1.206 paf 1253: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1254: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1255: end[-1]==':'/*was class name delim */ ||
1256: end[-1]=='.'/*was name delim */
1.162 parser 1257: )) {
1.206 paf 1258: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1259: lexical_brackets_nestage=1;
1260: RC;
1261: }
1.206 paf 1262: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1263: lexical_brackets_nestage=1;
1.48 paf 1264: RC;
1265: case '{':
1.206 paf 1266: pc.ls=LS_METHOD_CURLY;
1.1 paf 1267: lexical_brackets_nestage=1;
1.48 paf 1268: RC;
1.69 paf 1269: case '(':
1.206 paf 1270: pc.ls=LS_METHOD_ROUND;
1.69 paf 1271: lexical_brackets_nestage=1;
1272: RC;
1.48 paf 1273: case '.': // name part delim
1274: case '$': // name part subvar
1275: case ':': // ':name' or 'class:name'
1.170 parser 1276: case '^': // ^abc^xxx wrong. bailing out
1277: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1278: case ' ': // ^if ( wrong. bailing out
1.48 paf 1279: RC;
1.1 paf 1280: }
1281: break;
1.48 paf 1282:
1283: case LS_METHOD_SQUARE:
1284: switch(c) {
1285: case '$':
1.206 paf 1286: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1287: RC;
1288: case '^':
1.206 paf 1289: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1290: RC;
1291: case ';': // param delim
1292: RC;
1293: case ']':
1.1 paf 1294: if(--lexical_brackets_nestage==0) {
1.206 paf 1295: pc.ls=LS_METHOD_AFTER;
1.48 paf 1296: RC;
1.1 paf 1297: }
1.48 paf 1298: break;
1299: case '[':
1.1 paf 1300: lexical_brackets_nestage++;
1.48 paf 1301: break;
1302: }
1.1 paf 1303: break;
1.48 paf 1304:
1.1 paf 1305: case LS_METHOD_CURLY:
1.48 paf 1306: switch(c) {
1307: case '$':
1.206 paf 1308: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1309: RC;
1310: case '^':
1.206 paf 1311: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1312: RC;
1313: case ';': // param delim
1.48 paf 1314: RC;
1315: case '}':
1.1 paf 1316: if(--lexical_brackets_nestage==0) {
1.206 paf 1317: pc.ls=LS_METHOD_AFTER;
1.48 paf 1318: RC;
1.1 paf 1319: }
1.48 paf 1320: break;
1321: case '{':
1.1 paf 1322: lexical_brackets_nestage++;
1.48 paf 1323: break;
1324: }
1.209 paf 1325: if(pc.explicit_result && c)
1326: switch(c) {
1327: case '\n': case ' ': case '\t':
1328: begin=pc.source;
1329: begin_pos=pc.pos;
1330: continue; // skip it
1331: default:
1332: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
1333: goto break2;
1334: }
1.1 paf 1335: break;
1.48 paf 1336:
1.1 paf 1337: case LS_METHOD_AFTER:
1.69 paf 1338: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1339: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1340: lexical_brackets_nestage=1;
1.48 paf 1341: RC;
1.1 paf 1342: }
1.69 paf 1343: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1344: pc.ls=LS_METHOD_CURLY;
1.69 paf 1345: lexical_brackets_nestage=1;
1346: RC;
1347: }
1348: if(c=='(') {/* ]( }( )( */
1.206 paf 1349: pc.ls=LS_METHOD_ROUND;
1.1 paf 1350: lexical_brackets_nestage=1;
1.48 paf 1351: RC;
1.1 paf 1352: }
1.206 paf 1353: pop_LS(pc);
1354: pc.ungetc();
1.13 paf 1355: result=EON;
1.1 paf 1356: goto break2;
1357: }
1.9 paf 1358: if(c==0) {
1.1 paf 1359: result=-1;
1360: break;
1361: }
1362: }
1363:
1364: break2:
1.59 paf 1365: if(end!=begin) { // there is last piece?
1366: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1367: // strip last \n
1.10 paf 1368: end--;
1.137 parser 1369: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1370: end--;
1.59 paf 1371: }
1.206 paf 1372: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1373: if(!pc.string_start)
1374: pc.string_start=begin_pos;
1.59 paf 1375: // append it
1.206 paf 1376: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1377: }
1.59 paf 1378: }
1.206 paf 1379: if(!pc.string.is_empty()) { // something accumulated?
1380: // create STRING value: array of OP_VALUE+origin+vstring
1381: *lvalp=VL(
1382: new VString(*new String(pc.string, String::L_CLEAN)),
1383: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1384: // new pieces storage
1.206 paf 1385: pc.string.clear();
1386: pc.string_start.clear();
1.58 paf 1387: // make current result be pending for next call, return STRING for now
1.206 paf 1388: pc.pending_state=result; result=STRING;
1.58 paf 1389: }
1.67 paf 1390: if(skip_analized) {
1.206 paf 1391: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1392: }
1.58 paf 1393: return result;
1.1 paf 1394: }
1395:
1.206 paf 1396: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1397: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1398: return 1;
1.110 paf 1399: }
1.1 paf 1400:
1.110 paf 1401: static void yyprint(FILE *file, int type, YYSTYPE value) {
1402: if(type==STRING)
1.206 paf 1403: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1404: }
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