Annotation of parser3/src/main/compile.y, revision 1.211
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:
1.211 ! paf 8: $Id: compile.y,v 1.210 2004/04/06 14:08:41 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: ;
1.211 ! paf 346: construct_square: '[' {
! 347: // allow $result_or_other_variable[ letters here any time ]
! 348: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
! 349: } any_constructor_code_value {
! 350: PC.explicit_result=reinterpret_cast<bool>($2);
! 351: } ']' {
1.149 parser 352: // stack: context, name
1.211 ! paf 353: $$=$3; // stack: context, name, value
1.206 paf 354: O(*$$, OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 355: }
356: ;
1.149 parser 357: construct_round: '(' expr_value ')' {
1.206 paf 358: $$=N();
359: O(*$$, OP_PREPARE_TO_EXPRESSION);
1.149 parser 360: // stack: context, name
1.206 paf 361: P(*$$, *$2); // stack: context, name, value
362: O(*$$, OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 363: }
1.52 paf 364: ;
1.149 parser 365: construct_curly: '{' maybe_codes '}' {
366: // stack: context, name
1.206 paf 367: $$=N();
368: OA(*$$, OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 369: };
370:
1.55 paf 371: any_constructor_code_value:
1.157 parser 372: void_value /* optimized $var[] case */
1.52 paf 373: | STRING /* optimized $var[STRING] case */
1.55 paf 374: | constructor_code_value /* $var[something complex] */
1.1 paf 375: ;
1.55 paf 376: constructor_code_value: constructor_code {
1.206 paf 377: $$=N();
378: OA(*$$, OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 379: /* some code that writes to that context */
380: /* context=pop; stack: context.value() */
1.1 paf 381: };
1.55 paf 382: constructor_code: codes__excluding_sole_str_literal;
1.206 paf 383: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 384:
1.1 paf 385: /* call */
386:
1.66 paf 387: call: call_value {
388: $$=$1; /* stack: value */
1.206 paf 389: changetail_or_append(*$$,
1.186 paf 390: OP_CALL, true, /*->*/ OP_CALL__WRITE,
391: /*or */OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.66 paf 392: };
1.177 paf 393: call_value: '^' {
1.180 paf 394: PC.in_call_value=true;
1.177 paf 395: }
396: call_name {
1.180 paf 397: PC.in_call_value=false;
1.177 paf 398: }
1.154 parser 399: store_params EON { /* ^field.$method{vasya} */
400: $$=$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(*$$, *$2) };
1.69 paf 415: store_param:
416: store_square_param
417: | store_round_param
418: | store_curly_param
1.31 paf 419: ;
1.210 paf 420: store_square_param: '[' {
1.211 ! paf 421: // allow ^call[ letters here any time ]
1.210 paf 422: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
423: } store_code_param_parts {
424: PC.explicit_result=reinterpret_cast<bool>($2);
425: } ']' {$$=$3};
1.69 paf 426: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 427: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 428: store_code_param_parts:
429: store_code_param_part
1.206 paf 430: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 431: ;
432: store_expr_param_parts:
433: store_expr_param_part
1.206 paf 434: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 435: ;
1.94 paf 436: store_curly_param_parts:
437: store_curly_param_part
1.206 paf 438: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3) }
1.94 paf 439: ;
1.120 paf 440: store_code_param_part: code_param_value {
1.32 paf 441: $$=$1;
1.206 paf 442: O(*$$, OP_STORE_PARAM);
1.120 paf 443: };
1.69 paf 444: store_expr_param_part: write_expr_value {
1.206 paf 445: $$=N();
446: OA(*$$, OP_EXPR_CODE__STORE_PARAM, $1);
1.69 paf 447: };
1.94 paf 448: store_curly_param_part: maybe_codes {
1.206 paf 449: $$=N();
450: OA(*$$, OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 451: };
1.120 paf 452: code_param_value:
1.157 parser 453: void_value /* optimized [;...] case */
1.120 paf 454: | STRING /* optimized [STRING] case */
455: | constructor_code_value /* [something complex] */
456: ;
1.90 paf 457: write_expr_value: expr_value {
1.206 paf 458: $$=N();
459: O(*$$, OP_PREPARE_TO_EXPRESSION);
460: P(*$$, *$1);
461: O(*$$, OP_WRITE_EXPR_RESULT);
1.69 paf 462: };
1.1 paf 463:
464: /* name */
465:
1.206 paf 466: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 467:
1.206 paf 468: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 469: name_step: name_advance1 '.';
470: name_advance1: name_expr_value {
1.177 paf 471: // we know that name_advance1 not called from ^xxx context
472: // so we'll not check for operator call possibility as we do in name_advance2
473:
1.1 paf 474: /* stack: context */
475: $$=$1; /* stack: context,name */
1.206 paf 476: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 477: };
478: name_advance2: name_expr_value {
479: /* stack: context */
480: $$=$1; /* stack: context,name */
1.206 paf 481: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 482: }
1.4 paf 483: | STRING BOGUS
1.1 paf 484: ;
485: name_expr_value:
1.4 paf 486: STRING /* subname_is_const */
1.1 paf 487: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 488: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 489: | name_square_code_value /* [codes] */
1.1 paf 490: ;
491: name_expr_subvar_value: '$' subvar_ref_name_rdive {
492: $$=$2;
1.206 paf 493: O(*$$, OP_GET_ELEMENT);
1.1 paf 494: };
1.4 paf 495: name_expr_with_subvar_value: STRING subvar_get_writes {
1.206 paf 496: ArrayOperation* code;
1.183 paf 497: {
1.206 paf 498: change_string_literal_to_write_string_literal(*(code=$1));
499: P(*code, *$2);
1.183 paf 500: }
1.206 paf 501: $$=N();
502: OA(*$$, OP_STRING_POOL, code);
1.1 paf 503: };
1.166 parser 504: name_square_code_value: '[' codes ']' {
1.206 paf 505: $$=N();
506: OA(*$$, OP_OBJECT_POOL, $2); /* stack: empty write context */
1.183 paf 507: /* some code that writes to that context */
508: /* context=pop; stack: context.value() */
1.160 parser 509: };
1.154 parser 510: subvar_ref_name_rdive: STRING {
1.206 paf 511: $$=N();
512: O(*$$, OP_WITH_READ);
513: P(*$$, *$1);
1.1 paf 514: };
1.206 paf 515: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 516: subvar__get_write: '$' subvar_ref_name_rdive {
517: $$=$2;
1.206 paf 518: O(*$$, OP_GET_ELEMENT__WRITE);
1.42 paf 519: };
520:
1.154 parser 521: class_prefix:
522: class_static_prefix
523: | class_constructor_prefix
524: ;
1.155 parser 525: class_static_prefix: STRING ':' {
526: $$=$1; // stack: class name string
1.206 paf 527: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
528: if(VStateless_class* base=PC.cclass->base_class()) {
529: change_string_literal_value(*$$, base->name());
1.189 paf 530: } else {
531: strcpy(PC.error, "no base class declared");
532: YYERROR;
533: }
534: }
1.206 paf 535: O(*$$, OP_GET_CLASS);
1.155 parser 536: };
537: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 538: $$=$1;
1.180 paf 539: if(!PC.in_call_value) {
1.154 parser 540: strcpy(PC.error, ":: not allowed here");
541: YYERROR;
542: }
1.206 paf 543: O(*$$, OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 544: };
545:
1.53 paf 546:
1.56 paf 547: /* expr */
1.53 paf 548:
1.81 paf 549: expr_value: expr {
1.182 paf 550: // see OP_PREPARE_TO_EXPRESSION!!
1.206 paf 551: if(($$=$1)->count()==2) // only one string literal in there?
552: change_string_literal_to_double_literal(*$$); // make that string literal Double
1.62 paf 553: };
1.56 paf 554: expr:
1.62 paf 555: STRING
1.64 paf 556: | get_value
1.66 paf 557: | call_value
1.64 paf 558: | '"' string_inside_quotes_value '"' { $$ = $2; }
1.145 parser 559: | '\'' string_inside_quotes_value '\'' { $$ = $2; }
1.60 paf 560: | '(' expr ')' { $$ = $2; }
561: /* stack: operand // stack: @operand */
1.206 paf 562: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP_NEG) }
1.202 paf 563: | '+' expr %prec NUNARY { $$=$2 }
1.206 paf 564: | '~' expr { $$=$2; O(*$$, OP_INV) }
565: | '!' expr { $$=$2; O(*$$, OP_NOT) }
566: | "def" expr { $$=$2; O(*$$, OP_DEF) }
567: | "in" expr { $$=$2; O(*$$, OP_IN) }
568: | "-f" expr { $$=$2; O(*$$, OP_FEXISTS) }
569: | "-d" expr { $$=$2; O(*$$, OP_DEXISTS) }
1.60 paf 570: /* stack: a,b // stack: a@b */
1.206 paf 571: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP_SUB) }
572: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP_ADD) }
573: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MUL) }
574: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP_DIV) }
575: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MOD) }
576: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP_INTDIV) }
577: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SL) }
578: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SR) }
579: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_AND) }
580: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_OR) }
581: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_XOR) }
582: | expr "&&" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_AND) }
583: | expr "||" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_OR) }
584: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP_LOG_XOR) }
585: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LT) }
586: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GT) }
587: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LE) }
588: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GE) }
589: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_EQ) }
590: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_NE) }
591: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LT) }
592: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GT) }
593: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LE) }
594: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GE) }
595: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_EQ) }
596: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_NE) }
597: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP_IS) }
1.56 paf 598: ;
1.55 paf 599:
1.65 paf 600: string_inside_quotes_value: maybe_codes {
1.206 paf 601: $$=N();
602: OA(*$$, OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 603: /* some code that writes to that context */
604: /* context=pop; stack: context.get_string() */
1.53 paf 605: };
1.1 paf 606:
1.27 paf 607: /* basics */
1.1 paf 608:
1.81 paf 609: write_string: STRING {
1.209 paf 610: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
611: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 612: };
613:
1.206 paf 614: void_value: /* empty */ { $$=VL(new VVoid(), 0, 0, 0) };
615: empty: /* empty */ { $$=N() };
1.1 paf 616:
617: %%
1.105 paf 618: #endif
1.1 paf 619:
620: /*
621: 000$111(2222)00
622: 000$111{3333}00
1.9 paf 623: $,^: push,=0
1.1 paf 624: 1:( { break=pop
625: 2:( ) pop
626: 3:{ } pop
627:
628: 000^111(2222)4444{33333}4000
1.9 paf 629: $,^: push,=0
1.1 paf 630: 1:( { break=pop
631: 2:( )=4
632: 3:{ }=4
633: 4:[^({]=pop
634: */
635:
1.206 paf 636: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
637: pc.source--;
638: if(pc.pos.col==0) {
639: --pc.pos.line; pc.pos.col=last_line_end_col;
640: } else
641: --pc.pos.col;
642:
643: }
644: static int yylex(YYSTYPE *lvalp, void *apc) {
645: register Parse_control& pc=*static_cast<Parse_control*>(apc);
646:
647: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 648: #define RC {result=c; goto break2; }
1.1 paf 649:
1.206 paf 650: register int c;
651: int result;
1.1 paf 652:
1.206 paf 653: if(pc.pending_state) {
654: result=pc.pending_state;
655: pc.pending_state=0;
1.1 paf 656: return result;
657: }
658:
1.206 paf 659: const char *begin=pc.source;
660: Pos begin_pos=pc.pos;
1.91 paf 661: const char *end;
1.67 paf 662: int skip_analized=0;
1.50 paf 663: while(true) {
1.206 paf 664: c=*(end=(pc.source++));
665: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 666:
1.208 paf 667: if(c=='\n')
1.206 paf 668: pc.pos_next_line();
1.208 paf 669: else
1.206 paf 670: pc.pos_next_c(c);
1.208 paf 671: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 672:
1.208 paf 673: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 674: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 675: // @SPECIAL
676: // ...
677: // @<here =
1.206 paf 678: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 679: } // continuing checks
1.206 paf 680: if(pc.ls==LS_USER) {
681: push_LS(pc, LS_DEF_NAME);
1.171 parser 682: RC;
1.175 paf 683: } else // @ in first column inside some code [when could that be?]
1.171 parser 684: result=BAD_METHOD_DECL_START;
685: goto break2;
1.209 paf 686: }
687: if(c=='^') {
1.206 paf 688: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 689: // handle after-method situation
1.206 paf 690: pop_LS(pc);
1.203 paf 691: result=EON;
692: skip_analized=-1; // return to punctuation afterwards to assure it's literality
693: goto break2;
694: }
1.206 paf 695: switch(pc.ls) {
1.169 parser 696: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
697: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
698: case LS_VAR_NAME_SIMPLE_WITH_COLON:
699: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
700: case LS_VAR_NAME_CURLY:
701: case LS_METHOD_NAME:
1.194 paf 702: case LS_USER_COMMENT:
1.169 parser 703: case LS_DEF_COMMENT:
704: // no literals in names, please
705: break;
706: default:
1.206 paf 707: switch(*pc.source) {
1.165 parser 708: // ^escaping some punctuators
1.48 paf 709: case '^': case '$': case ';':
1.126 paf 710: case '(': case ')':
1.48 paf 711: case '[': case ']':
712: case '{': case '}':
1.172 parser 713: case '"': case ':':
1.40 paf 714: if(end!=begin) {
1.206 paf 715: if(!pc.string_start)
716: pc.string_start=begin_pos;
1.40 paf 717: // append piece till ^
1.206 paf 718: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 719: }
1.63 paf 720: // reset piece 'begin' position & line
1.206 paf 721: begin=pc.source; // ->punctuation
722: begin_pos=pc.pos;
1.203 paf 723: // skip over _ after ^
1.206 paf 724: pc.source++; pc.pos.col++;
1.203 paf 725: // skip analysis = forced literal
726: continue;
1.114 paf 727:
728: // converting ^#HH into char(hex(HH))
729: case '#':
730: if(end!=begin) {
1.206 paf 731: if(!pc.string_start)
732: pc.string_start=begin_pos;
1.114 paf 733: // append piece till ^
1.206 paf 734: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 735: }
736: // #HH ?
1.206 paf 737: if(pc.source[0]=='#' && pc.source[1] && pc.source[2]) {
738: char c=
739: hex_value[(unsigned char)pc.source[1]]*0x10+
740: hex_value[(unsigned char)pc.source[2]];
741: if(c==0) {
1.114 paf 742: result=BAD_HEX_LITERAL;
743: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
744: }
745: // append char(hex(HH))
1.206 paf 746: pc.string.append(c);
1.114 paf 747: // skip over ^#HH
1.206 paf 748: pc.source+=3;
749: pc.pos.col+=3;
1.114 paf 750: // reset piece 'begin' position & line
1.206 paf 751: begin=pc.source; // ->after ^#HH
752: begin_pos=pc.pos;
1.203 paf 753: // skip analysis = forced literal
1.114 paf 754: continue;
755: }
756: break;
1.1 paf 757: }
1.169 parser 758: break;
1.203 paf 759: }
1.169 parser 760: }
1.113 paf 761: // #comment start skipping
1.206 paf 762: if(c=='#' && pc.pos.col==1) {
1.112 paf 763: if(end!=begin) {
1.206 paf 764: if(!pc.string_start)
765: pc.string_start=begin_pos;
1.112 paf 766: // append piece till #
1.206 paf 767: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 768: }
769: // fall into COMMENT lexical state [wait for \n]
1.206 paf 770: push_LS(pc, LS_USER_COMMENT);
1.175 paf 771: continue;
1.112 paf 772: }
1.206 paf 773: switch(pc.ls) {
1.10 paf 774:
775: // USER'S = NOT OURS
1.1 paf 776: case LS_USER:
1.206 paf 777: case LS_NAME_SQUARE_PART: // name.[here].xxx
778: if(pc.trim_bof)
1.153 parser 779: switch(c) {
780: case '\n': case ' ': case '\t':
1.206 paf 781: begin=pc.source;
782: begin_pos=pc.pos;
1.152 parser 783: continue; // skip it
1.153 parser 784: default:
1.206 paf 785: pc.trim_bof=false;
1.152 parser 786: }
1.48 paf 787: switch(c) {
788: case '$':
1.206 paf 789: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 790: RC;
791: case '^':
1.206 paf 792: push_LS(pc, LS_METHOD_NAME);
1.48 paf 793: RC;
1.166 parser 794: case ']':
1.206 paf 795: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 796: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 797: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 798: RC;
799: }
1.160 parser 800: break;
1.166 parser 801: case '[': // $name.[co<[>de]
1.206 paf 802: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 803: lexical_brackets_nestage++;
1.161 parser 804: break;
1.112 paf 805: }
1.209 paf 806: if(pc.explicit_result && c)
807: switch(c) {
808: case '\n': case ' ': case '\t':
809: begin=pc.source;
810: begin_pos=pc.pos;
811: continue; // skip it
812: default:
813: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
814: goto break2;
815: }
1.112 paf 816: break;
817:
818: // #COMMENT
1.194 paf 819: case LS_USER_COMMENT:
1.112 paf 820: if(c=='\n') {
821: // skip comment
1.206 paf 822: begin=pc.source;
823: begin_pos=pc.pos;
1.112 paf 824:
1.206 paf 825: pop_LS(pc);
1.112 paf 826: continue;
1.1 paf 827: }
1.48 paf 828: break;
829:
830: // STRING IN EXPRESSION
1.145 parser 831: case LS_EXPRESSION_STRING_QUOTED:
832: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 833: switch(c) {
834: case '"':
1.145 parser 835: case '\'':
836: if(
1.206 paf 837: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
838: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
839: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 840: RC;
841: }
842: break;
1.48 paf 843: case '$':
1.206 paf 844: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 845: RC;
846: case '^':
1.206 paf 847: push_LS(pc, LS_METHOD_NAME);
1.48 paf 848: RC;
1.10 paf 849: }
850: break;
851:
852: // METHOD DEFINITION
853: case LS_DEF_NAME:
1.48 paf 854: switch(c) {
855: case '[':
1.206 paf 856: pc.ls=LS_DEF_PARAMS;
1.48 paf 857: RC;
858: case '\n':
1.206 paf 859: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 860: RC;
1.10 paf 861: }
862: break;
1.48 paf 863:
1.10 paf 864: case LS_DEF_PARAMS:
1.48 paf 865: switch(c) {
1.192 paf 866: case '$': // common error
1.193 paf 867: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
868: goto break2;
1.48 paf 869: case ';':
870: RC;
871: case ']':
1.206 paf 872: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 873: RC;
1.49 paf 874: case '\n': // wrong. bailing out
1.206 paf 875: pop_LS(pc);
1.48 paf 876: RC;
1.10 paf 877: }
878: break;
1.48 paf 879:
1.10 paf 880: case LS_DEF_LOCALS:
1.48 paf 881: switch(c) {
882: case '[':
883: case ';':
884: RC;
885: case ']':
1.206 paf 886: pc.ls=LS_DEF_COMMENT;
1.48 paf 887: RC;
888: case '\n': // wrong. bailing out
1.206 paf 889: pop_LS(pc);
1.48 paf 890: RC;
1.10 paf 891: }
892: break;
1.48 paf 893:
1.10 paf 894: case LS_DEF_COMMENT:
895: if(c=='\n') {
1.206 paf 896: pop_LS(pc);
1.48 paf 897: RC;
1.37 paf 898: }
899: break;
900:
1.48 paf 901: case LS_DEF_SPECIAL_BODY:
1.175 paf 902: if(c=='\n')
1.48 paf 903: RC;
904: break;
905:
906: // (EXPRESSION)
1.69 paf 907: case LS_VAR_ROUND:
908: case LS_METHOD_ROUND:
1.48 paf 909: switch(c) {
910: case ')':
911: if(--lexical_brackets_nestage==0)
1.206 paf 912: if(pc.ls==LS_METHOD_ROUND) // method round param ended
913: pc.ls=LS_METHOD_AFTER; // look for method end
914: else // pc.ls==LS_VAR_ROUND // variable constructor ended
915: pop_LS(pc); // return to normal life
1.48 paf 916: RC;
1.194 paf 917: case '#': // comment start skipping
918: if(end!=begin) {
1.206 paf 919: if(!pc.string_start)
920: pc.string_start=begin_pos;
1.194 paf 921: // append piece till #
1.206 paf 922: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 923: }
924: // fall into COMMENT lexical state [wait for \n]
1.206 paf 925: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 926: lexical_brackets_nestage=1;
927: continue;
1.48 paf 928: case '$':
1.206 paf 929: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 930: RC;
931: case '^':
1.206 paf 932: push_LS(pc, LS_METHOD_NAME);
1.48 paf 933: RC;
934: case '(':
935: lexical_brackets_nestage++;
936: RC;
1.67 paf 937: case '-':
1.206 paf 938: switch(*pc.source) {
1.127 paf 939: case 'f': // -f
1.67 paf 940: skip_analized=1;
941: result=FEXISTS;
1.127 paf 942: goto break2;
943: case 'd': // -d
944: skip_analized=1;
945: result=DEXISTS;
946: goto break2;
1.191 paf 947: default: // minus
1.67 paf 948: result=c;
1.127 paf 949: goto break2;
950: }
1.67 paf 951: goto break2;
1.173 paf 952: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 953: case '~':
1.48 paf 954: case ';':
955: RC;
1.193 paf 956: case '&': case '|':
1.206 paf 957: if(*pc.source==c) { // && ||
1.193 paf 958: result=c=='&'?LAND:LOR;
1.67 paf 959: skip_analized=1;
1.58 paf 960: } else
961: result=c;
962: goto break2;
1.193 paf 963: case '!':
1.206 paf 964: switch(pc.source[0]) {
1.193 paf 965: case '|': // !| !||
966: skip_analized=1;
1.206 paf 967: if(pc.source[1]=='|') {
1.193 paf 968: skip_analized++;
969: result=LXOR;
970: } else
971: result=NXOR;
972: goto break2;
973: case '=': // !=
974: skip_analized=1;
975: result=NNE;
976: goto break2;
977: }
978: RC;
1.195 paf 979:
980: case '<': // <<, <=, <
1.206 paf 981: switch(*pc.source) {
1.195 paf 982: case '<': // <[<]
983: skip_analized=1; result=NSL; break;
984: case '=': // <[=]
985: skip_analized=1; result=NLE; break;
986: default: // <[]
987: result=c; break;
988: }
989: goto break2;
990: case '>': // >>, >=, >
1.206 paf 991: switch(*pc.source) {
1.195 paf 992: case '>': // >[>]
993: skip_analized=1; result=NSR; break;
994: case '=': // >[=]
995: skip_analized=1; result=NGE; break;
996: default: // >[]
997: result=c; break;
998: }
999: goto break2;
1000: case '=': // ==
1.206 paf 1001: switch(*pc.source) {
1.195 paf 1002: case '=': // =[=]
1003: skip_analized=1; result=NEQ; break;
1004: default: // =[]
1005: result=c; break; // not used now
1006: }
1.58 paf 1007: goto break2;
1.195 paf 1008:
1.48 paf 1009: case '"':
1.206 paf 1010: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1011: RC;
1012: case '\'':
1.206 paf 1013: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1014: RC;
1.50 paf 1015: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1016: if(end==begin) // right after whitespace
1.206 paf 1017: if(isspace(pc.source[1])) {
1018: switch(*pc.source) {
1.117 paf 1019: // case '?': // ok [and bad cases, yacc would bark at them]
1020: case 't': // lt gt [et nt]
1021: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1022: skip_analized=1;
1023: goto break2;
1024: case 'e': // le ge ne [ee]
1025: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1026: skip_analized=1;
1027: goto break2;
1028: case 'q': // eq [lq gq nq]
1029: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1030: skip_analized=1;
1031: goto break2;
1032: }
1.67 paf 1033: }
1034: break;
1035: case 'i':
1036: if(end==begin) // right after whitespace
1.206 paf 1037: if(isspace(pc.source[1])) {
1038: switch(pc.source[0]) {
1.117 paf 1039: case 'n': // in
1.95 paf 1040: skip_analized=1;
1041: result=IN;
1042: goto break2;
1.117 paf 1043: case 's': // is
1.95 paf 1044: skip_analized=1;
1045: result=IS;
1046: goto break2;
1047: }
1.67 paf 1048: }
1049: break;
1050: case 'd':
1051: if(end==begin) // right after whitespace
1.206 paf 1052: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.67 paf 1053: skip_analized=2;
1054: result=DEF;
1.58 paf 1055: goto break2;
1.50 paf 1056: }
1.48 paf 1057: break;
1058: case ' ': case '\t': case '\n':
1.63 paf 1059: if(end!=begin) { // there were a string after previous operator?
1060: result=0; // return that string
1061: goto break2;
1.48 paf 1062: }
1.63 paf 1063: // that's a leading|traling space or after-operator-space
1064: // ignoring it
1065: // reset piece 'begin' position & line
1.206 paf 1066: begin=pc.source; // after whitespace char
1067: begin_pos=pc.pos;
1.48 paf 1068: continue;
1.1 paf 1069: }
1070: break;
1.194 paf 1071: case LS_EXPRESSION_COMMENT:
1072: if(c=='(')
1073: lexical_brackets_nestage++;
1074:
1.206 paf 1075: switch(*pc.source) {
1.194 paf 1076: case '\n': case ')':
1.206 paf 1077: if(*pc.source==')')
1.194 paf 1078: if(--lexical_brackets_nestage!=0)
1079: continue;
1080:
1081: // skip comment
1.206 paf 1082: begin=pc.source;
1083: begin_pos=pc.pos;
1.194 paf 1084:
1.206 paf 1085: pop_LS(pc);
1.194 paf 1086: continue;
1087: }
1088: break;
1.1 paf 1089:
1.10 paf 1090: // VARIABLE GET/PUT/WITH
1.166 parser 1091: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1092: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1093: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1094: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1095: if(
1.206 paf 1096: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1097: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1098: // name in expr ends also before
1.48 paf 1099: switch(c) {
1.181 paf 1100: // expression minus
1.92 paf 1101: case '-':
1.181 paf 1102: // expression integer division
1103: case '\\':
1.206 paf 1104: pop_LS(pc);
1105: pc.ungetc();
1.48 paf 1106: result=EON;
1107: goto break2;
1108: }
1109: }
1.166 parser 1110: if(
1.206 paf 1111: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1112: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1113: // name already has ':', stop before next
1114: switch(c) {
1115: case ':':
1.206 paf 1116: pop_LS(pc);
1117: pc.ungetc();
1.142 parser 1118: result=EON;
1119: goto break2;
1120: }
1121: }
1.48 paf 1122: switch(c) {
1123: case 0:
1124: case ' ': case '\t': case '\n':
1125: case ';':
1.126 paf 1126: case ']': case '}': case ')':
1127: case '"': case '\'':
1.139 parser 1128: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1129: case '+': case '*': case '/': case '%':
1130: case '&': case '|':
1131: case '=': case '!':
1.99 paf 1132: // common delimiters
1.190 paf 1133: case ',': case '?': case '#':
1.139 parser 1134: // before call
1135: case '^':
1.206 paf 1136: pop_LS(pc);
1137: pc.ungetc();
1.13 paf 1138: result=EON;
1.1 paf 1139: goto break2;
1.48 paf 1140: case '[':
1.162 parser 1141: // $name.<[>code]
1.206 paf 1142: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1143: end[-1]=='$'/*was start of get*/ ||
1144: end[-1]==':'/*was class name delim */ ||
1145: end[-1]=='.'/*was name delim */
1.162 parser 1146: )) {
1.206 paf 1147: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1148: lexical_brackets_nestage=1;
1149: RC;
1150: }
1.206 paf 1151: pc.ls=LS_VAR_SQUARE;
1.1 paf 1152: lexical_brackets_nestage=1;
1.48 paf 1153: RC;
1154: case '{':
1155: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1156: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1157: } else {
1.206 paf 1158: pc.ls=LS_VAR_CURLY;
1.48 paf 1159: lexical_brackets_nestage=1;
1160: }
1.69 paf 1161:
1.48 paf 1162: RC;
1163: case '(':
1.206 paf 1164: pc.ls=LS_VAR_ROUND;
1.1 paf 1165: lexical_brackets_nestage=1;
1.48 paf 1166: RC;
1167: case '.': // name part delim
1168: case '$': // name part subvar
1.160 parser 1169: case ':': // class<:>name
1.166 parser 1170: // go to _WITHOUT_COLON state variant...
1.206 paf 1171: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1172: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1173: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1174: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1175: // ...stop before next ':'
1.48 paf 1176: RC;
1.1 paf 1177: }
1178: break;
1.48 paf 1179:
1.1 paf 1180: case LS_VAR_NAME_CURLY:
1.48 paf 1181: switch(c) {
1.162 parser 1182: case '[':
1.166 parser 1183: // ${name.<[>code]}
1.206 paf 1184: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1185: lexical_brackets_nestage=1;
1186: RC;
1.48 paf 1187: case '}': // ${name} finished, restoring LS
1.206 paf 1188: pop_LS(pc);
1.48 paf 1189: RC;
1190: case '.': // name part delim
1191: case '$': // name part subvar
1192: case ':': // ':name' or 'class:name'
1193: RC;
1.1 paf 1194: }
1195: break;
1.48 paf 1196:
1197: case LS_VAR_SQUARE:
1198: switch(c) {
1199: case '$':
1.206 paf 1200: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1201: RC;
1202: case '^':
1.206 paf 1203: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1204: RC;
1205: case ']':
1.1 paf 1206: if(--lexical_brackets_nestage==0) {
1.206 paf 1207: pop_LS(pc);
1.48 paf 1208: RC;
1.1 paf 1209: }
1.48 paf 1210: break;
1211: case ';': // operator_or_fmt;value delim
1212: RC;
1213: case '[':
1214: lexical_brackets_nestage++;
1215: break;
1.1 paf 1216: }
1217: break;
1.48 paf 1218:
1.1 paf 1219: case LS_VAR_CURLY:
1.48 paf 1220: switch(c) {
1221: case '$':
1.206 paf 1222: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1223: RC;
1224: case '^':
1.206 paf 1225: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1226: RC;
1227: case '}':
1.1 paf 1228: if(--lexical_brackets_nestage==0) {
1.206 paf 1229: pop_LS(pc);
1.48 paf 1230: RC;
1.1 paf 1231: }
1.48 paf 1232: break;
1233: case '{':
1.1 paf 1234: lexical_brackets_nestage++;
1.48 paf 1235: break;
1236: }
1.1 paf 1237: break;
1238:
1.10 paf 1239: // METHOD CALL
1.1 paf 1240: case LS_METHOD_NAME:
1.48 paf 1241: switch(c) {
1242: case '[':
1.166 parser 1243: // ^name.<[>code].xxx
1.206 paf 1244: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1245: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1246: end[-1]==':'/*was class name delim */ ||
1247: end[-1]=='.'/*was name delim */
1.162 parser 1248: )) {
1.206 paf 1249: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1250: lexical_brackets_nestage=1;
1251: RC;
1252: }
1.206 paf 1253: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1254: lexical_brackets_nestage=1;
1.48 paf 1255: RC;
1256: case '{':
1.206 paf 1257: pc.ls=LS_METHOD_CURLY;
1.1 paf 1258: lexical_brackets_nestage=1;
1.48 paf 1259: RC;
1.69 paf 1260: case '(':
1.206 paf 1261: pc.ls=LS_METHOD_ROUND;
1.69 paf 1262: lexical_brackets_nestage=1;
1263: RC;
1.48 paf 1264: case '.': // name part delim
1265: case '$': // name part subvar
1266: case ':': // ':name' or 'class:name'
1.170 parser 1267: case '^': // ^abc^xxx wrong. bailing out
1268: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1269: case ' ': // ^if ( wrong. bailing out
1.48 paf 1270: RC;
1.1 paf 1271: }
1272: break;
1.48 paf 1273:
1274: case LS_METHOD_SQUARE:
1275: switch(c) {
1276: case '$':
1.206 paf 1277: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1278: RC;
1279: case '^':
1.206 paf 1280: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1281: RC;
1282: case ';': // param delim
1283: RC;
1284: case ']':
1.1 paf 1285: if(--lexical_brackets_nestage==0) {
1.206 paf 1286: pc.ls=LS_METHOD_AFTER;
1.48 paf 1287: RC;
1.1 paf 1288: }
1.48 paf 1289: break;
1290: case '[':
1.1 paf 1291: lexical_brackets_nestage++;
1.48 paf 1292: break;
1293: }
1.1 paf 1294: break;
1.48 paf 1295:
1.1 paf 1296: case LS_METHOD_CURLY:
1.48 paf 1297: switch(c) {
1298: case '$':
1.206 paf 1299: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1300: RC;
1301: case '^':
1.206 paf 1302: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1303: RC;
1304: case ';': // param delim
1.48 paf 1305: RC;
1306: case '}':
1.1 paf 1307: if(--lexical_brackets_nestage==0) {
1.206 paf 1308: pc.ls=LS_METHOD_AFTER;
1.48 paf 1309: RC;
1.1 paf 1310: }
1.48 paf 1311: break;
1312: case '{':
1.1 paf 1313: lexical_brackets_nestage++;
1.48 paf 1314: break;
1315: }
1.209 paf 1316: if(pc.explicit_result && c)
1317: switch(c) {
1318: case '\n': case ' ': case '\t':
1319: begin=pc.source;
1320: begin_pos=pc.pos;
1321: continue; // skip it
1322: default:
1323: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
1324: goto break2;
1325: }
1.1 paf 1326: break;
1.48 paf 1327:
1.1 paf 1328: case LS_METHOD_AFTER:
1.69 paf 1329: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1330: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1331: lexical_brackets_nestage=1;
1.48 paf 1332: RC;
1.1 paf 1333: }
1.69 paf 1334: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1335: pc.ls=LS_METHOD_CURLY;
1.69 paf 1336: lexical_brackets_nestage=1;
1337: RC;
1338: }
1339: if(c=='(') {/* ]( }( )( */
1.206 paf 1340: pc.ls=LS_METHOD_ROUND;
1.1 paf 1341: lexical_brackets_nestage=1;
1.48 paf 1342: RC;
1.1 paf 1343: }
1.206 paf 1344: pop_LS(pc);
1345: pc.ungetc();
1.13 paf 1346: result=EON;
1.1 paf 1347: goto break2;
1348: }
1.9 paf 1349: if(c==0) {
1.1 paf 1350: result=-1;
1351: break;
1352: }
1353: }
1354:
1355: break2:
1.59 paf 1356: if(end!=begin) { // there is last piece?
1357: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1358: // strip last \n
1.10 paf 1359: end--;
1.137 parser 1360: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1361: end--;
1.59 paf 1362: }
1.206 paf 1363: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1364: if(!pc.string_start)
1365: pc.string_start=begin_pos;
1.59 paf 1366: // append it
1.206 paf 1367: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1368: }
1.59 paf 1369: }
1.206 paf 1370: if(!pc.string.is_empty()) { // something accumulated?
1371: // create STRING value: array of OP_VALUE+origin+vstring
1372: *lvalp=VL(
1373: new VString(*new String(pc.string, String::L_CLEAN)),
1374: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1375: // new pieces storage
1.206 paf 1376: pc.string.clear();
1377: pc.string_start.clear();
1.58 paf 1378: // make current result be pending for next call, return STRING for now
1.206 paf 1379: pc.pending_state=result; result=STRING;
1.58 paf 1380: }
1.67 paf 1381: if(skip_analized) {
1.206 paf 1382: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1383: }
1.58 paf 1384: return result;
1.1 paf 1385: }
1386:
1.206 paf 1387: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1388: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1389: return 1;
1.110 paf 1390: }
1.1 paf 1391:
1.110 paf 1392: static void yyprint(FILE *file, int type, YYSTYPE value) {
1393: if(type==STRING)
1.206 paf 1394: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1395: }
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