Annotation of parser3/src/main/compile.y, revision 1.208
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:
1.208 ! paf 8: $Id: compile.y,v 1.207 2003/10/07 14:29:03 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);
1.208 ! paf 50: static int is_not_whitespace(char c, int);
1.1 paf 51:
1.8 paf 52: // local convinient inplace typecast & var
1.205 paf 53: #undef PC
1.206 paf 54: #define PC (*(Parse_control *)pc)
55: #undef POOL
1.114 paf 56: #define POOL (*PC.pool)
1.107 paf 57: #ifndef DOXYGEN
1.1 paf 58: %}
59:
60: %pure_parser
61:
1.13 paf 62: %token EON
1.4 paf 63: %token STRING
1.1 paf 64: %token BOGUS
1.55 paf 65:
1.58 paf 66: %token BAD_STRING_COMPARISON_OPERATOR
1.114 paf 67: %token BAD_HEX_LITERAL
1.171 parser 68: %token BAD_METHOD_DECL_START
1.193 paf 69: %token BAD_METHOD_PARAMETER_NAME_CHARACTER
70: %token BAD_MATH_OPERATOR_CHARACTER
1.58 paf 71:
1.59 paf 72: %token LAND "&&"
1.58 paf 73: %token LOR "||"
1.193 paf 74: %token LXOR "!||"
75: %token NXOR "!|"
1.58 paf 76:
77: %token NLE "<="
78: %token NGE ">="
79: %token NEQ "=="
80: %token NNE "!="
1.195 paf 81: %token NSL "<<"
82: %token NSR ">>"
1.58 paf 83:
84: %token SLT "lt"
85: %token SGT "gt"
86: %token SLE "le"
87: %token SGE "ge"
88: %token SEQ "eq"
89: %token SNE "ne"
90:
1.67 paf 91: %token DEF "def"
92: %token IN "in"
93: %token FEXISTS "-f"
1.127 paf 94: %token DEXISTS "-d"
1.95 paf 95: %token IS "is"
1.67 paf 96:
1.57 paf 97: /* logical */
1.193 paf 98: %left "!||"
1.57 paf 99: %left "||"
100: %left "&&"
1.131 paf 101: %left '<' '>' "<=" ">=" "lt" "gt" "le" "ge"
102: %left "==" "!=" "eq" "ne"
103: %left "is" "def" "in" "-f" "-d"
1.57 paf 104:
105: /* bitwise */
1.193 paf 106: %left "!|"
1.131 paf 107: %left '|'
108: %left '&'
1.202 paf 109: %left "<<" ">>"
1.57 paf 110:
1.56 paf 111: /* numerical */
1.202 paf 112: %left '+' '-'
113: %left '*' '/' '\\' '%'
114: %left NUNARY /* unary - + */
115:
116: /* out-of-group */
117: %left '~' /* bitwise */
118: %left '!' /* logical */
1.1 paf 119:
120: %%
1.195 paf 121: all:
1.10 paf 122: one_big_piece {
1.206 paf 123: Method& method=*new Method(Method::CT_ANY,
1.81 paf 124: 0, 0, /*min, max numbered_params_count*/
1.75 paf 125: 0/*param_names*/, 0/*local_names*/,
126: $1/*parser_code*/, 0/*native_code*/);
1.206 paf 127: PC.cclass->add_method(PC.alias_method(main_method_name), method);
1.10 paf 128: }
129: | methods;
130:
131: methods: method | methods method;
132: one_big_piece: maybe_codes;
133:
1.34 paf 134: method: control_method | code_method;
135:
136: control_method: '@' STRING '\n'
1.132 paf 137: maybe_control_strings {
1.206 paf 138: const String& command=*LA2S(*$2);
1.34 paf 139: YYSTYPE strings_code=$4;
1.206 paf 140: if(strings_code->count()<1*OPERATIONS_PER_OPVALUE) {
1.114 paf 141: strcpy(PC.error, "@");
142: strcat(PC.error, command.cstr());
143: strcat(PC.error, " is empty");
1.37 paf 144: YYERROR;
145: }
1.74 paf 146: if(command==CLASS_NAME) {
1.188 paf 147: if(PC.cclass->base_class()) { // already changed from default?
1.114 paf 148: strcpy(PC.error, "class already have a name '");
149: strncat(PC.error, PC.cclass->name().cstr(), 100);
150: strcat(PC.error, "'");
1.73 paf 151: YYERROR;
152: }
1.206 paf 153: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.73 paf 154: // new class' name
1.206 paf 155: const String& name=*LA2S(*strings_code);
1.73 paf 156: // creating the class
1.206 paf 157: VStateless_class* cclass=new VClass;
158: PC.cclass=cclass;
159: PC.cclass->set_name(name);
1.73 paf 160: // append to request's classes
1.206 paf 161: PC.request.classes().put(name, cclass);
1.73 paf 162: } else {
1.206 paf 163: strcpy(PC.error, "@"CLASS_NAME" must contain only one line with class name (contains more then one)");
1.34 paf 164: YYERROR;
165: }
1.130 paf 166: } else if(command==USE_CONTROL_METHOD_NAME) {
1.206 paf 167: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE)
168: PC.request.use_file(PC.request.main_class, *LA2S(*strings_code, i));
1.130 paf 169: } else if(command==BASE_NAME) {
1.188 paf 170: if(PC.cclass->base_class()) { // already changed from default?
1.130 paf 171: strcpy(PC.error, "class already have a base '");
1.188 paf 172: strncat(PC.error, PC.cclass->base_class()->name().cstr(), 100);
1.130 paf 173: strcat(PC.error, "'");
174: YYERROR;
175: }
1.206 paf 176: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
177: const String& base_name=*LA2S(*strings_code);
178: if(Value* base_class_value=PC.request.classes().get(base_name)) {
179: // @CLASS == @BASE sanity check
180: if(VStateless_class *base_class=base_class_value->get_class()) {
181: if(PC.cclass==base_class) {
182: strcpy(PC.error, "@"CLASS_NAME" equals @"BASE_NAME);
183: YYERROR;
184: }
185: PC.cclass->get_class()->set_base(base_class);
186: } else { // they asked to derive from a class without methods ['env' & co]
187: strcpy(PC.error, base_name.cstr());
188: strcat(PC.error, ": you can not derive from this class in @"BASE_NAME);
189: YYERROR;
190: }
191: } else {
1.130 paf 192: strcpy(PC.error, base_name.cstr());
193: strcat(PC.error, ": undefined class in @"BASE_NAME);
1.73 paf 194: YYERROR;
195: }
1.34 paf 196: } else {
1.130 paf 197: strcpy(PC.error, "@"BASE_NAME" must contain sole name");
1.34 paf 198: YYERROR;
199: }
1.130 paf 200: } else {
201: strcpy(PC.error, "'");
202: strncat(PC.error, command.cstr(), MAX_STRING/2);
203: strcat(PC.error, "' invalid special name. valid names are "
204: "'"CLASS_NAME"', '"USE_CONTROL_METHOD_NAME"' and '"BASE_NAME"'");
205: YYERROR;
1.34 paf 206: }
207: };
1.132 paf 208: maybe_control_strings: empty | control_strings;
1.206 paf 209: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2) };
1.37 paf 210: control_string: maybe_string '\n';
211: maybe_string: empty | STRING;
1.34 paf 212:
1.208 ! paf 213: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n' {
! 214: PC.explicit_result=false;
1.206 paf 215: const String& name=*LA2S(*$2);
1.10 paf 216:
217: YYSTYPE params_names_code=$3;
1.206 paf 218: ArrayString* params_names=0;
219: if(int size=params_names_code->count()) {
220: params_names=new ArrayString;
221: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
222: *params_names+=LA2S(*params_names_code, i);
1.75 paf 223: }
1.10 paf 224:
225: YYSTYPE locals_names_code=$4;
1.206 paf 226: ArrayString* locals_names=0;
227: if(int size=locals_names_code->count()) {
228: locals_names=new ArrayString;
1.208 ! paf 229: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE) {
! 230: const String* local_name=LA2S(*locals_names_code, i);
! 231: if(*local_name==RESULT_VAR_NAME)
! 232: PC.explicit_result=true;
! 233: else
! 234: *locals_names+=local_name;
! 235: }
1.75 paf 236: }
1.10 paf 237:
1.208 ! paf 238: Method* method=new Method(
1.206 paf 239: //name,
1.122 paf 240: Method::CT_ANY,
1.81 paf 241: 0, 0/*min,max numbered_params_count*/,
1.76 paf 242: params_names, locals_names,
1.208 ! paf 243: 0/*to be filled later in next {} */, 0);
! 244: PC.cclass->add_method(PC.alias_method(name), *method);
! 245: *reinterpret_cast<Method**>(&$$)=method;
! 246:
! 247: // todo: check [][;result;]
! 248: } maybe_codes {
! 249: // fill in the code
! 250: reinterpret_cast<Method*>($7)->parser_code=$8;
1.8 paf 251: };
1.10 paf 252:
253: maybe_bracketed_strings: empty | bracketed_maybe_strings;
254: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
255: maybe_strings: empty | strings;
1.206 paf 256: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3) };
1.10 paf 257:
258: maybe_comment: empty | STRING;
1.1 paf 259:
260: /* codes */
261:
1.10 paf 262: maybe_codes: empty | codes;
263:
1.206 paf 264: codes: code | codes code { $$=$1; P(*$$, *$2) };
1.81 paf 265: code: write_string | action;
1.208 ! paf 266: action: {
! 267: *reinterpret_cast<bool*>(&$$)=PC.explicit_result;
! 268: PC.explicit_result=false;
! 269: } real_action {
! 270: PC.explicit_result=reinterpret_cast<bool>($1);
! 271: $$=$2;
! 272: };
! 273: real_action: get | put | call;
1.1 paf 274:
275: /* get */
276:
1.64 paf 277: get: get_value {
1.184 paf 278: $$=$1; /* stack: resulting value */
1.206 paf 279: changetail_or_append(*$$,
1.186 paf 280: OP_GET_ELEMENT, false, /*->*/OP_GET_ELEMENT__WRITE,
281: /*or */OP_WRITE_VALUE
1.184 paf 282: ); /* value=pop; wcontext.write(value) */
1.1 paf 283: };
1.163 parser 284: get_value: '$' get_name_value { $$=$2 };
1.64 paf 285: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 286: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 287: name_without_curly_rdive:
288: name_without_curly_rdive_read
289: | name_without_curly_rdive_class;
1.19 paf 290: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 291: $$=N();
292: ArrayOperation* diving_code=$1;
293: const String* first_name=LA2S(*diving_code);
1.179 paf 294: // self.xxx... -> xxx...
1.206 paf 295: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 296: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.206 paf 297: O(*yyval, OP_WITH_SELF); /* stack: starting context */
298: P(*yyval, *diving_code,
1.22 paf 299: /* skip over... */
1.206 paf 300: diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.22 paf 301: } else {
1.206 paf 302: O(*yyval, OP_WITH_READ); /* stack: starting context */
1.179 paf 303:
1.201 paf 304: // ^if ELEMENT -> ^if ELEMENT_OR_OPERATOR
1.206 paf 305: // OP_VALUE+origin+string+OP_GET_ELEMENT. -> OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
306: if(PC.in_call_value && diving_code->count()==4)
307: diving_code->put(4-1, OP_GET_ELEMENT_OR_OPERATOR);
308: P(*$$, *diving_code);
1.22 paf 309: }
310: /* diving code; stack: current context */
1.1 paf 311: };
1.206 paf 312: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2) };
313: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2) };
1.1 paf 314:
315: /* put */
316:
1.81 paf 317: put: '$' name_expr_wdive construct {
1.20 paf 318: $$=$2; /* stack: context,name */
1.206 paf 319: P(*$$, *$3); /* stack: context,name,constructor_value */
1.20 paf 320: };
1.44 paf 321: name_expr_wdive:
1.157 parser 322: name_expr_wdive_root
323: | name_expr_wdive_write
1.44 paf 324: | name_expr_wdive_class;
1.157 parser 325: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 326: $$=N();
327: ArrayOperation* diving_code=$1;
328: const String* first_name=LA2S(*diving_code);
1.179 paf 329: // $self.xxx... -> $xxx...
1.206 paf 330: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 331: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.206 paf 332: O(*$$, OP_WITH_SELF); /* stack: starting context */
333: P(*$$, *diving_code,
1.23 paf 334: /* skip over... */
1.206 paf 335: diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.23 paf 336: } else {
1.206 paf 337: O(*$$, OP_WITH_ROOT); /* stack: starting context */
338: P(*$$, *diving_code);
1.23 paf 339: }
340: /* diving code; stack: current context */
1.156 parser 341: };
1.157 parser 342: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 343: $$=N();
344: O(*$$, OP_WITH_WRITE); /* stack: starting context */
345: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 346: };
1.206 paf 347: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2) };
1.20 paf 348:
1.149 parser 349: construct:
1.163 parser 350: construct_square
351: | construct_round
352: | construct_curly
1.149 parser 353: ;
354: construct_square: '[' any_constructor_code_value ']' {
355: // stack: context, name
356: $$=$2; // stack: context, name, value
1.206 paf 357: O(*$$, OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 358: }
359: ;
1.149 parser 360: construct_round: '(' expr_value ')' {
1.206 paf 361: $$=N();
362: O(*$$, OP_PREPARE_TO_EXPRESSION);
1.149 parser 363: // stack: context, name
1.206 paf 364: P(*$$, *$2); // stack: context, name, value
365: O(*$$, OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 366: }
1.52 paf 367: ;
1.149 parser 368: construct_curly: '{' maybe_codes '}' {
369: // stack: context, name
1.206 paf 370: $$=N();
371: OA(*$$, OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 372: };
373:
1.55 paf 374: any_constructor_code_value:
1.157 parser 375: void_value /* optimized $var[] case */
1.52 paf 376: | STRING /* optimized $var[STRING] case */
1.55 paf 377: | constructor_code_value /* $var[something complex] */
1.1 paf 378: ;
1.55 paf 379: constructor_code_value: constructor_code {
1.206 paf 380: $$=N();
381: OA(*$$, OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 382: /* some code that writes to that context */
383: /* context=pop; stack: context.value() */
1.1 paf 384: };
1.55 paf 385: constructor_code: codes__excluding_sole_str_literal;
1.206 paf 386: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 387:
1.1 paf 388: /* call */
389:
1.66 paf 390: call: call_value {
391: $$=$1; /* stack: value */
1.206 paf 392: changetail_or_append(*$$,
1.186 paf 393: OP_CALL, true, /*->*/ OP_CALL__WRITE,
394: /*or */OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.66 paf 395: };
1.177 paf 396: call_value: '^' {
1.180 paf 397: PC.in_call_value=true;
1.177 paf 398: }
399: call_name {
1.180 paf 400: PC.in_call_value=false;
1.177 paf 401: }
1.154 parser 402: store_params EON { /* ^field.$method{vasya} */
403: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 404:
1.154 parser 405: YYSTYPE params_code=$5;
1.206 paf 406: if(params_code->count()==4) { // probably [] case. [OP_VALUE+origin+Void+STORE_PARAM]
407: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.140 parser 408: if(!value->is_defined()) // value is VVoid?
1.123 paf 409: params_code=0; // ^zzz[] case. don't append lone empty param.
1.186 paf 410: }
411: /* stack: context, method_junction */
1.206 paf 412: OA(*$$, OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
1.1 paf 413: };
414:
1.43 paf 415: call_name: name_without_curly_rdive;
1.38 paf 416:
1.206 paf 417: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2) };
1.69 paf 418: store_param:
419: store_square_param
420: | store_round_param
421: | store_curly_param
1.31 paf 422: ;
1.123 paf 423: store_square_param: '[' store_code_param_parts ']' {$$=$2};
1.69 paf 424: store_round_param: '(' store_expr_param_parts ')' {$$=$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(*$$, OP_STORE_PARAM);
1.120 paf 441: };
1.69 paf 442: store_expr_param_part: write_expr_value {
1.206 paf 443: $$=N();
444: OA(*$$, OP_EXPR_CODE__STORE_PARAM, $1);
1.69 paf 445: };
1.94 paf 446: store_curly_param_part: maybe_codes {
1.206 paf 447: $$=N();
448: OA(*$$, OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 449: };
1.120 paf 450: code_param_value:
1.157 parser 451: void_value /* optimized [;...] case */
1.120 paf 452: | STRING /* optimized [STRING] case */
453: | constructor_code_value /* [something complex] */
454: ;
1.90 paf 455: write_expr_value: expr_value {
1.206 paf 456: $$=N();
457: O(*$$, OP_PREPARE_TO_EXPRESSION);
458: P(*$$, *$1);
459: O(*$$, OP_WRITE_EXPR_RESULT);
1.69 paf 460: };
1.1 paf 461:
462: /* name */
463:
1.206 paf 464: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 465:
1.206 paf 466: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 467: name_step: name_advance1 '.';
468: name_advance1: name_expr_value {
1.177 paf 469: // we know that name_advance1 not called from ^xxx context
470: // so we'll not check for operator call possibility as we do in name_advance2
471:
1.1 paf 472: /* stack: context */
473: $$=$1; /* stack: context,name */
1.206 paf 474: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 475: };
476: name_advance2: name_expr_value {
477: /* stack: context */
478: $$=$1; /* stack: context,name */
1.206 paf 479: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 480: }
1.4 paf 481: | STRING BOGUS
1.1 paf 482: ;
483: name_expr_value:
1.4 paf 484: STRING /* subname_is_const */
1.1 paf 485: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 486: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 487: | name_square_code_value /* [codes] */
1.1 paf 488: ;
489: name_expr_subvar_value: '$' subvar_ref_name_rdive {
490: $$=$2;
1.206 paf 491: O(*$$, OP_GET_ELEMENT);
1.1 paf 492: };
1.4 paf 493: name_expr_with_subvar_value: STRING subvar_get_writes {
1.206 paf 494: ArrayOperation* code;
1.183 paf 495: {
1.206 paf 496: change_string_literal_to_write_string_literal(*(code=$1));
497: P(*code, *$2);
1.183 paf 498: }
1.206 paf 499: $$=N();
500: OA(*$$, OP_STRING_POOL, code);
1.1 paf 501: };
1.166 parser 502: name_square_code_value: '[' codes ']' {
1.206 paf 503: $$=N();
504: OA(*$$, OP_OBJECT_POOL, $2); /* stack: empty write context */
1.183 paf 505: /* some code that writes to that context */
506: /* context=pop; stack: context.value() */
1.160 parser 507: };
1.154 parser 508: subvar_ref_name_rdive: STRING {
1.206 paf 509: $$=N();
510: O(*$$, OP_WITH_READ);
511: P(*$$, *$1);
1.1 paf 512: };
1.206 paf 513: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 514: subvar__get_write: '$' subvar_ref_name_rdive {
515: $$=$2;
1.206 paf 516: O(*$$, OP_GET_ELEMENT__WRITE);
1.42 paf 517: };
518:
1.154 parser 519: class_prefix:
520: class_static_prefix
521: | class_constructor_prefix
522: ;
1.155 parser 523: class_static_prefix: STRING ':' {
524: $$=$1; // stack: class name string
1.206 paf 525: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
526: if(VStateless_class* base=PC.cclass->base_class()) {
527: change_string_literal_value(*$$, base->name());
1.189 paf 528: } else {
529: strcpy(PC.error, "no base class declared");
530: YYERROR;
531: }
532: }
1.206 paf 533: O(*$$, OP_GET_CLASS);
1.155 parser 534: };
535: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 536: $$=$1;
1.180 paf 537: if(!PC.in_call_value) {
1.154 parser 538: strcpy(PC.error, ":: not allowed here");
539: YYERROR;
540: }
1.206 paf 541: O(*$$, OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 542: };
543:
1.53 paf 544:
1.56 paf 545: /* expr */
1.53 paf 546:
1.81 paf 547: expr_value: expr {
1.182 paf 548: // see OP_PREPARE_TO_EXPRESSION!!
1.206 paf 549: if(($$=$1)->count()==2) // only one string literal in there?
550: change_string_literal_to_double_literal(*$$); // make that string literal Double
1.62 paf 551: };
1.56 paf 552: expr:
1.62 paf 553: STRING
1.64 paf 554: | get_value
1.66 paf 555: | call_value
1.64 paf 556: | '"' string_inside_quotes_value '"' { $$ = $2; }
1.145 parser 557: | '\'' string_inside_quotes_value '\'' { $$ = $2; }
1.60 paf 558: | '(' expr ')' { $$ = $2; }
559: /* stack: operand // stack: @operand */
1.206 paf 560: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP_NEG) }
1.202 paf 561: | '+' expr %prec NUNARY { $$=$2 }
1.206 paf 562: | '~' expr { $$=$2; O(*$$, OP_INV) }
563: | '!' expr { $$=$2; O(*$$, OP_NOT) }
564: | "def" expr { $$=$2; O(*$$, OP_DEF) }
565: | "in" expr { $$=$2; O(*$$, OP_IN) }
566: | "-f" expr { $$=$2; O(*$$, OP_FEXISTS) }
567: | "-d" expr { $$=$2; O(*$$, OP_DEXISTS) }
1.60 paf 568: /* stack: a,b // stack: a@b */
1.206 paf 569: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP_SUB) }
570: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP_ADD) }
571: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MUL) }
572: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP_DIV) }
573: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MOD) }
574: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP_INTDIV) }
575: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SL) }
576: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SR) }
577: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_AND) }
578: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_OR) }
579: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_XOR) }
580: | expr "&&" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_AND) }
581: | expr "||" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_OR) }
582: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP_LOG_XOR) }
583: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LT) }
584: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GT) }
585: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LE) }
586: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GE) }
587: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_EQ) }
588: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_NE) }
589: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LT) }
590: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GT) }
591: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LE) }
592: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GE) }
593: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_EQ) }
594: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_NE) }
595: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP_IS) }
1.56 paf 596: ;
1.55 paf 597:
1.65 paf 598: string_inside_quotes_value: maybe_codes {
1.206 paf 599: $$=N();
600: OA(*$$, OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 601: /* some code that writes to that context */
602: /* context=pop; stack: context.get_string() */
1.53 paf 603: };
1.1 paf 604:
1.27 paf 605: /* basics */
1.1 paf 606:
1.81 paf 607: write_string: STRING {
1.208 ! paf 608: // $1=OP_STRING+origin+OP_WRITE_VALUE
! 609: if(PC.explicit_result) { // only allow decoration whitespaces, no byte code actually produced
! 610: String::Body body=static_cast<VString*>($1->get(2).value)->string();
! 611: if(body.for_each/*first_that, actually*/(is_not_whitespace, 0)) {
! 612: strcpy(PC.error, "only whitespaces are allowed here (explicit result mode), look before this point");
! 613: YYERROR;
! 614: }
! 615: $$=N();
! 616: } else {
! 617: // optimized from OP_STRING+origin+OP_WRITE_VALUE to OP_STRING__WRITE
! 618: change_string_literal_to_write_string_literal(*($$=$1));
! 619: }
1.54 paf 620: };
621:
1.206 paf 622: void_value: /* empty */ { $$=VL(new VVoid(), 0, 0, 0) };
623: empty: /* empty */ { $$=N() };
1.1 paf 624:
625: %%
1.105 paf 626: #endif
1.1 paf 627:
628: /*
629: 000$111(2222)00
630: 000$111{3333}00
1.9 paf 631: $,^: push,=0
1.1 paf 632: 1:( { break=pop
633: 2:( ) pop
634: 3:{ } pop
635:
636: 000^111(2222)4444{33333}4000
1.9 paf 637: $,^: push,=0
1.1 paf 638: 1:( { break=pop
639: 2:( )=4
640: 3:{ }=4
641: 4:[^({]=pop
642: */
643:
1.206 paf 644: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
645: pc.source--;
646: if(pc.pos.col==0) {
647: --pc.pos.line; pc.pos.col=last_line_end_col;
648: } else
649: --pc.pos.col;
650:
651: }
652: static int yylex(YYSTYPE *lvalp, void *apc) {
653: register Parse_control& pc=*static_cast<Parse_control*>(apc);
654:
655: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 656: #define RC {result=c; goto break2; }
1.1 paf 657:
1.206 paf 658: register int c;
659: int result;
1.1 paf 660:
1.206 paf 661: if(pc.pending_state) {
662: result=pc.pending_state;
663: pc.pending_state=0;
1.1 paf 664: return result;
665: }
666:
1.206 paf 667: const char *begin=pc.source;
668: Pos begin_pos=pc.pos;
1.91 paf 669: const char *end;
1.67 paf 670: int skip_analized=0;
1.50 paf 671: while(true) {
1.206 paf 672: c=*(end=(pc.source++));
673: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 674:
1.208 ! paf 675: if(c=='\n')
1.206 paf 676: pc.pos_next_line();
1.208 ! paf 677: else
1.206 paf 678: pc.pos_next_c(c);
1.208 ! paf 679: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 680:
1.208 ! paf 681: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 682: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 683: // @SPECIAL
684: // ...
685: // @<here =
1.206 paf 686: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 687: } // continuing checks
1.206 paf 688: if(pc.ls==LS_USER) {
689: push_LS(pc, LS_DEF_NAME);
1.171 parser 690: RC;
1.175 paf 691: } else // @ in first column inside some code [when could that be?]
1.171 parser 692: result=BAD_METHOD_DECL_START;
693: goto break2;
1.203 paf 694: } else if(c=='^') {
1.206 paf 695: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 696: // handle after-method situation
1.206 paf 697: pop_LS(pc);
1.203 paf 698: result=EON;
699: skip_analized=-1; // return to punctuation afterwards to assure it's literality
700: goto break2;
701: }
1.206 paf 702: switch(pc.ls) {
1.169 parser 703: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
704: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
705: case LS_VAR_NAME_SIMPLE_WITH_COLON:
706: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
707: case LS_VAR_NAME_CURLY:
708: case LS_METHOD_NAME:
1.194 paf 709: case LS_USER_COMMENT:
1.169 parser 710: case LS_DEF_COMMENT:
711: // no literals in names, please
712: break;
713: default:
1.206 paf 714: switch(*pc.source) {
1.165 parser 715: // ^escaping some punctuators
1.48 paf 716: case '^': case '$': case ';':
1.126 paf 717: case '(': case ')':
1.48 paf 718: case '[': case ']':
719: case '{': case '}':
1.172 parser 720: case '"': case ':':
1.40 paf 721: if(end!=begin) {
1.206 paf 722: if(!pc.string_start)
723: pc.string_start=begin_pos;
1.40 paf 724: // append piece till ^
1.206 paf 725: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 726: }
1.63 paf 727: // reset piece 'begin' position & line
1.206 paf 728: begin=pc.source; // ->punctuation
729: begin_pos=pc.pos;
1.203 paf 730: // skip over _ after ^
1.206 paf 731: pc.source++; pc.pos.col++;
1.203 paf 732: // skip analysis = forced literal
733: continue;
1.114 paf 734:
735: // converting ^#HH into char(hex(HH))
736: case '#':
737: if(end!=begin) {
1.206 paf 738: if(!pc.string_start)
739: pc.string_start=begin_pos;
1.114 paf 740: // append piece till ^
1.206 paf 741: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 742: }
743: // #HH ?
1.206 paf 744: if(pc.source[0]=='#' && pc.source[1] && pc.source[2]) {
745: char c=
746: hex_value[(unsigned char)pc.source[1]]*0x10+
747: hex_value[(unsigned char)pc.source[2]];
748: if(c==0) {
1.114 paf 749: result=BAD_HEX_LITERAL;
750: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
751: }
752: // append char(hex(HH))
1.206 paf 753: pc.string.append(c);
1.114 paf 754: // skip over ^#HH
1.206 paf 755: pc.source+=3;
756: pc.pos.col+=3;
1.114 paf 757: // reset piece 'begin' position & line
1.206 paf 758: begin=pc.source; // ->after ^#HH
759: begin_pos=pc.pos;
1.203 paf 760: // skip analysis = forced literal
1.114 paf 761: continue;
762: }
763: break;
1.1 paf 764: }
1.169 parser 765: break;
1.203 paf 766: }
1.169 parser 767: }
1.113 paf 768: // #comment start skipping
1.206 paf 769: if(c=='#' && pc.pos.col==1) {
1.112 paf 770: if(end!=begin) {
1.206 paf 771: if(!pc.string_start)
772: pc.string_start=begin_pos;
1.112 paf 773: // append piece till #
1.206 paf 774: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 775: }
776: // fall into COMMENT lexical state [wait for \n]
1.206 paf 777: push_LS(pc, LS_USER_COMMENT);
1.175 paf 778: continue;
1.112 paf 779: }
1.206 paf 780: switch(pc.ls) {
1.10 paf 781:
782: // USER'S = NOT OURS
1.1 paf 783: case LS_USER:
1.206 paf 784: case LS_NAME_SQUARE_PART: // name.[here].xxx
785: if(pc.trim_bof)
1.153 parser 786: switch(c) {
787: case '\n': case ' ': case '\t':
1.206 paf 788: begin=pc.source;
789: begin_pos=pc.pos;
1.152 parser 790: continue; // skip it
1.153 parser 791: default:
1.206 paf 792: pc.trim_bof=false;
1.152 parser 793: }
1.48 paf 794: switch(c) {
795: case '$':
1.206 paf 796: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 797: RC;
798: case '^':
1.206 paf 799: push_LS(pc, LS_METHOD_NAME);
1.48 paf 800: RC;
1.166 parser 801: case ']':
1.206 paf 802: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 803: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 804: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 805: RC;
806: }
1.160 parser 807: break;
1.166 parser 808: case '[': // $name.[co<[>de]
1.206 paf 809: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 810: lexical_brackets_nestage++;
1.161 parser 811: break;
1.112 paf 812: }
813: break;
814:
815: // #COMMENT
1.194 paf 816: case LS_USER_COMMENT:
1.112 paf 817: if(c=='\n') {
818: // skip comment
1.206 paf 819: begin=pc.source;
820: begin_pos=pc.pos;
1.112 paf 821:
1.206 paf 822: pop_LS(pc);
1.112 paf 823: continue;
1.1 paf 824: }
1.48 paf 825: break;
826:
827: // STRING IN EXPRESSION
1.145 parser 828: case LS_EXPRESSION_STRING_QUOTED:
829: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 830: switch(c) {
831: case '"':
1.145 parser 832: case '\'':
833: if(
1.206 paf 834: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
835: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
836: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 837: RC;
838: }
839: break;
1.48 paf 840: case '$':
1.206 paf 841: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 842: RC;
843: case '^':
1.206 paf 844: push_LS(pc, LS_METHOD_NAME);
1.48 paf 845: RC;
1.10 paf 846: }
847: break;
848:
849: // METHOD DEFINITION
850: case LS_DEF_NAME:
1.48 paf 851: switch(c) {
852: case '[':
1.206 paf 853: pc.ls=LS_DEF_PARAMS;
1.48 paf 854: RC;
855: case '\n':
1.206 paf 856: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 857: RC;
1.10 paf 858: }
859: break;
1.48 paf 860:
1.10 paf 861: case LS_DEF_PARAMS:
1.48 paf 862: switch(c) {
1.192 paf 863: case '$': // common error
1.193 paf 864: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
865: goto break2;
1.48 paf 866: case ';':
867: RC;
868: case ']':
1.206 paf 869: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 870: RC;
1.49 paf 871: case '\n': // wrong. bailing out
1.206 paf 872: pop_LS(pc);
1.48 paf 873: RC;
1.10 paf 874: }
875: break;
1.48 paf 876:
1.10 paf 877: case LS_DEF_LOCALS:
1.48 paf 878: switch(c) {
879: case '[':
880: case ';':
881: RC;
882: case ']':
1.206 paf 883: pc.ls=LS_DEF_COMMENT;
1.48 paf 884: RC;
885: case '\n': // wrong. bailing out
1.206 paf 886: pop_LS(pc);
1.48 paf 887: RC;
1.10 paf 888: }
889: break;
1.48 paf 890:
1.10 paf 891: case LS_DEF_COMMENT:
892: if(c=='\n') {
1.206 paf 893: pop_LS(pc);
1.48 paf 894: RC;
1.37 paf 895: }
896: break;
897:
1.48 paf 898: case LS_DEF_SPECIAL_BODY:
1.175 paf 899: if(c=='\n')
1.48 paf 900: RC;
901: break;
902:
903: // (EXPRESSION)
1.69 paf 904: case LS_VAR_ROUND:
905: case LS_METHOD_ROUND:
1.48 paf 906: switch(c) {
907: case ')':
908: if(--lexical_brackets_nestage==0)
1.206 paf 909: if(pc.ls==LS_METHOD_ROUND) // method round param ended
910: pc.ls=LS_METHOD_AFTER; // look for method end
911: else // pc.ls==LS_VAR_ROUND // variable constructor ended
912: pop_LS(pc); // return to normal life
1.48 paf 913: RC;
1.194 paf 914: case '#': // comment start skipping
915: if(end!=begin) {
1.206 paf 916: if(!pc.string_start)
917: pc.string_start=begin_pos;
1.194 paf 918: // append piece till #
1.206 paf 919: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 920: }
921: // fall into COMMENT lexical state [wait for \n]
1.206 paf 922: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 923: lexical_brackets_nestage=1;
924: continue;
1.48 paf 925: case '$':
1.206 paf 926: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 927: RC;
928: case '^':
1.206 paf 929: push_LS(pc, LS_METHOD_NAME);
1.48 paf 930: RC;
931: case '(':
932: lexical_brackets_nestage++;
933: RC;
1.67 paf 934: case '-':
1.206 paf 935: switch(*pc.source) {
1.127 paf 936: case 'f': // -f
1.67 paf 937: skip_analized=1;
938: result=FEXISTS;
1.127 paf 939: goto break2;
940: case 'd': // -d
941: skip_analized=1;
942: result=DEXISTS;
943: goto break2;
1.191 paf 944: default: // minus
1.67 paf 945: result=c;
1.127 paf 946: goto break2;
947: }
1.67 paf 948: goto break2;
1.173 paf 949: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 950: case '~':
1.48 paf 951: case ';':
952: RC;
1.193 paf 953: case '&': case '|':
1.206 paf 954: if(*pc.source==c) { // && ||
1.193 paf 955: result=c=='&'?LAND:LOR;
1.67 paf 956: skip_analized=1;
1.58 paf 957: } else
958: result=c;
959: goto break2;
1.193 paf 960: case '!':
1.206 paf 961: switch(pc.source[0]) {
1.193 paf 962: case '|': // !| !||
963: skip_analized=1;
1.206 paf 964: if(pc.source[1]=='|') {
1.193 paf 965: skip_analized++;
966: result=LXOR;
967: } else
968: result=NXOR;
969: goto break2;
970: case '=': // !=
971: skip_analized=1;
972: result=NNE;
973: goto break2;
974: }
975: RC;
1.195 paf 976:
977: case '<': // <<, <=, <
1.206 paf 978: switch(*pc.source) {
1.195 paf 979: case '<': // <[<]
980: skip_analized=1; result=NSL; break;
981: case '=': // <[=]
982: skip_analized=1; result=NLE; break;
983: default: // <[]
984: result=c; break;
985: }
986: goto break2;
987: case '>': // >>, >=, >
1.206 paf 988: switch(*pc.source) {
1.195 paf 989: case '>': // >[>]
990: skip_analized=1; result=NSR; break;
991: case '=': // >[=]
992: skip_analized=1; result=NGE; break;
993: default: // >[]
994: result=c; break;
995: }
996: goto break2;
997: case '=': // ==
1.206 paf 998: switch(*pc.source) {
1.195 paf 999: case '=': // =[=]
1000: skip_analized=1; result=NEQ; break;
1001: default: // =[]
1002: result=c; break; // not used now
1003: }
1.58 paf 1004: goto break2;
1.195 paf 1005:
1.48 paf 1006: case '"':
1.206 paf 1007: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1008: RC;
1009: case '\'':
1.206 paf 1010: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1011: RC;
1.50 paf 1012: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1013: if(end==begin) // right after whitespace
1.206 paf 1014: if(isspace(pc.source[1])) {
1015: switch(*pc.source) {
1.117 paf 1016: // case '?': // ok [and bad cases, yacc would bark at them]
1017: case 't': // lt gt [et nt]
1018: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1019: skip_analized=1;
1020: goto break2;
1021: case 'e': // le ge ne [ee]
1022: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1023: skip_analized=1;
1024: goto break2;
1025: case 'q': // eq [lq gq nq]
1026: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1027: skip_analized=1;
1028: goto break2;
1029: }
1.67 paf 1030: }
1031: break;
1032: case 'i':
1033: if(end==begin) // right after whitespace
1.206 paf 1034: if(isspace(pc.source[1])) {
1035: switch(pc.source[0]) {
1.117 paf 1036: case 'n': // in
1.95 paf 1037: skip_analized=1;
1038: result=IN;
1039: goto break2;
1.117 paf 1040: case 's': // is
1.95 paf 1041: skip_analized=1;
1042: result=IS;
1043: goto break2;
1044: }
1.67 paf 1045: }
1046: break;
1047: case 'd':
1048: if(end==begin) // right after whitespace
1.206 paf 1049: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.67 paf 1050: skip_analized=2;
1051: result=DEF;
1.58 paf 1052: goto break2;
1.50 paf 1053: }
1.48 paf 1054: break;
1055: case ' ': case '\t': case '\n':
1.63 paf 1056: if(end!=begin) { // there were a string after previous operator?
1057: result=0; // return that string
1058: goto break2;
1.48 paf 1059: }
1.63 paf 1060: // that's a leading|traling space or after-operator-space
1061: // ignoring it
1062: // reset piece 'begin' position & line
1.206 paf 1063: begin=pc.source; // after whitespace char
1064: begin_pos=pc.pos;
1.48 paf 1065: continue;
1.1 paf 1066: }
1067: break;
1.194 paf 1068: case LS_EXPRESSION_COMMENT:
1069: if(c=='(')
1070: lexical_brackets_nestage++;
1071:
1.206 paf 1072: switch(*pc.source) {
1.194 paf 1073: case '\n': case ')':
1.206 paf 1074: if(*pc.source==')')
1.194 paf 1075: if(--lexical_brackets_nestage!=0)
1076: continue;
1077:
1078: // skip comment
1.206 paf 1079: begin=pc.source;
1080: begin_pos=pc.pos;
1.194 paf 1081:
1.206 paf 1082: pop_LS(pc);
1.194 paf 1083: continue;
1084: }
1085: break;
1.1 paf 1086:
1.10 paf 1087: // VARIABLE GET/PUT/WITH
1.166 parser 1088: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1089: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1090: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1091: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1092: if(
1.206 paf 1093: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1094: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1095: // name in expr ends also before
1.48 paf 1096: switch(c) {
1.181 paf 1097: // expression minus
1.92 paf 1098: case '-':
1.181 paf 1099: // expression integer division
1100: case '\\':
1.206 paf 1101: pop_LS(pc);
1102: pc.ungetc();
1.48 paf 1103: result=EON;
1104: goto break2;
1105: }
1106: }
1.166 parser 1107: if(
1.206 paf 1108: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1109: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1110: // name already has ':', stop before next
1111: switch(c) {
1112: case ':':
1.206 paf 1113: pop_LS(pc);
1114: pc.ungetc();
1.142 parser 1115: result=EON;
1116: goto break2;
1117: }
1118: }
1.48 paf 1119: switch(c) {
1120: case 0:
1121: case ' ': case '\t': case '\n':
1122: case ';':
1.126 paf 1123: case ']': case '}': case ')':
1124: case '"': case '\'':
1.139 parser 1125: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1126: case '+': case '*': case '/': case '%':
1127: case '&': case '|':
1128: case '=': case '!':
1.99 paf 1129: // common delimiters
1.190 paf 1130: case ',': case '?': case '#':
1.139 parser 1131: // before call
1132: case '^':
1.206 paf 1133: pop_LS(pc);
1134: pc.ungetc();
1.13 paf 1135: result=EON;
1.1 paf 1136: goto break2;
1.48 paf 1137: case '[':
1.162 parser 1138: // $name.<[>code]
1.206 paf 1139: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1140: end[-1]=='$'/*was start of get*/ ||
1141: end[-1]==':'/*was class name delim */ ||
1142: end[-1]=='.'/*was name delim */
1.162 parser 1143: )) {
1.206 paf 1144: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1145: lexical_brackets_nestage=1;
1146: RC;
1147: }
1.206 paf 1148: pc.ls=LS_VAR_SQUARE;
1.1 paf 1149: lexical_brackets_nestage=1;
1.48 paf 1150: RC;
1151: case '{':
1152: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1153: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1154: } else {
1.206 paf 1155: pc.ls=LS_VAR_CURLY;
1.48 paf 1156: lexical_brackets_nestage=1;
1157: }
1.69 paf 1158:
1.48 paf 1159: RC;
1160: case '(':
1.206 paf 1161: pc.ls=LS_VAR_ROUND;
1.1 paf 1162: lexical_brackets_nestage=1;
1.48 paf 1163: RC;
1164: case '.': // name part delim
1165: case '$': // name part subvar
1.160 parser 1166: case ':': // class<:>name
1.166 parser 1167: // go to _WITHOUT_COLON state variant...
1.206 paf 1168: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1169: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1170: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1171: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1172: // ...stop before next ':'
1.48 paf 1173: RC;
1.1 paf 1174: }
1175: break;
1.48 paf 1176:
1.1 paf 1177: case LS_VAR_NAME_CURLY:
1.48 paf 1178: switch(c) {
1.162 parser 1179: case '[':
1.166 parser 1180: // ${name.<[>code]}
1.206 paf 1181: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1182: lexical_brackets_nestage=1;
1183: RC;
1.48 paf 1184: case '}': // ${name} finished, restoring LS
1.206 paf 1185: pop_LS(pc);
1.48 paf 1186: RC;
1187: case '.': // name part delim
1188: case '$': // name part subvar
1189: case ':': // ':name' or 'class:name'
1190: RC;
1.1 paf 1191: }
1192: break;
1.48 paf 1193:
1194: case LS_VAR_SQUARE:
1195: switch(c) {
1196: case '$':
1.206 paf 1197: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1198: RC;
1199: case '^':
1.206 paf 1200: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1201: RC;
1202: case ']':
1.1 paf 1203: if(--lexical_brackets_nestage==0) {
1.206 paf 1204: pop_LS(pc);
1.48 paf 1205: RC;
1.1 paf 1206: }
1.48 paf 1207: break;
1208: case ';': // operator_or_fmt;value delim
1209: RC;
1210: case '[':
1211: lexical_brackets_nestage++;
1212: break;
1.1 paf 1213: }
1214: break;
1.48 paf 1215:
1.1 paf 1216: case LS_VAR_CURLY:
1.48 paf 1217: switch(c) {
1218: case '$':
1.206 paf 1219: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1220: RC;
1221: case '^':
1.206 paf 1222: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1223: RC;
1224: case '}':
1.1 paf 1225: if(--lexical_brackets_nestage==0) {
1.206 paf 1226: pop_LS(pc);
1.48 paf 1227: RC;
1.1 paf 1228: }
1.48 paf 1229: break;
1230: case '{':
1.1 paf 1231: lexical_brackets_nestage++;
1.48 paf 1232: break;
1233: }
1.1 paf 1234: break;
1235:
1.10 paf 1236: // METHOD CALL
1.1 paf 1237: case LS_METHOD_NAME:
1.48 paf 1238: switch(c) {
1239: case '[':
1.166 parser 1240: // ^name.<[>code].xxx
1.206 paf 1241: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1242: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1243: end[-1]==':'/*was class name delim */ ||
1244: end[-1]=='.'/*was name delim */
1.162 parser 1245: )) {
1.206 paf 1246: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1247: lexical_brackets_nestage=1;
1248: RC;
1249: }
1.206 paf 1250: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1251: lexical_brackets_nestage=1;
1.48 paf 1252: RC;
1253: case '{':
1.206 paf 1254: pc.ls=LS_METHOD_CURLY;
1.1 paf 1255: lexical_brackets_nestage=1;
1.48 paf 1256: RC;
1.69 paf 1257: case '(':
1.206 paf 1258: pc.ls=LS_METHOD_ROUND;
1.69 paf 1259: lexical_brackets_nestage=1;
1260: RC;
1.48 paf 1261: case '.': // name part delim
1262: case '$': // name part subvar
1263: case ':': // ':name' or 'class:name'
1.170 parser 1264: case '^': // ^abc^xxx wrong. bailing out
1265: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1266: case ' ': // ^if ( wrong. bailing out
1.48 paf 1267: RC;
1.1 paf 1268: }
1269: break;
1.48 paf 1270:
1271: case LS_METHOD_SQUARE:
1272: switch(c) {
1273: case '$':
1.206 paf 1274: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1275: RC;
1276: case '^':
1.206 paf 1277: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1278: RC;
1279: case ';': // param delim
1280: RC;
1281: case ']':
1.1 paf 1282: if(--lexical_brackets_nestage==0) {
1.206 paf 1283: pc.ls=LS_METHOD_AFTER;
1.48 paf 1284: RC;
1.1 paf 1285: }
1.48 paf 1286: break;
1287: case '[':
1.1 paf 1288: lexical_brackets_nestage++;
1.48 paf 1289: break;
1290: }
1.1 paf 1291: break;
1.48 paf 1292:
1.1 paf 1293: case LS_METHOD_CURLY:
1.48 paf 1294: switch(c) {
1295: case '$':
1.206 paf 1296: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1297: RC;
1298: case '^':
1.206 paf 1299: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1300: RC;
1301: case ';': // param delim
1.48 paf 1302: RC;
1303: case '}':
1.1 paf 1304: if(--lexical_brackets_nestage==0) {
1.206 paf 1305: pc.ls=LS_METHOD_AFTER;
1.48 paf 1306: RC;
1.1 paf 1307: }
1.48 paf 1308: break;
1309: case '{':
1.1 paf 1310: lexical_brackets_nestage++;
1.48 paf 1311: break;
1312: }
1.1 paf 1313: break;
1.48 paf 1314:
1.1 paf 1315: case LS_METHOD_AFTER:
1.69 paf 1316: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1317: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1318: lexical_brackets_nestage=1;
1.48 paf 1319: RC;
1.1 paf 1320: }
1.69 paf 1321: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1322: pc.ls=LS_METHOD_CURLY;
1.69 paf 1323: lexical_brackets_nestage=1;
1324: RC;
1325: }
1326: if(c=='(') {/* ]( }( )( */
1.206 paf 1327: pc.ls=LS_METHOD_ROUND;
1.1 paf 1328: lexical_brackets_nestage=1;
1.48 paf 1329: RC;
1.1 paf 1330: }
1.206 paf 1331: pop_LS(pc);
1332: pc.ungetc();
1.13 paf 1333: result=EON;
1.1 paf 1334: goto break2;
1335: }
1.9 paf 1336: if(c==0) {
1.1 paf 1337: result=-1;
1338: break;
1339: }
1340: }
1341:
1342: break2:
1.59 paf 1343: if(end!=begin) { // there is last piece?
1344: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1345: // strip last \n
1.10 paf 1346: end--;
1.137 parser 1347: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1348: end--;
1.59 paf 1349: }
1.206 paf 1350: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1351: if(!pc.string_start)
1352: pc.string_start=begin_pos;
1.59 paf 1353: // append it
1.206 paf 1354: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1355: }
1.59 paf 1356: }
1.206 paf 1357: if(!pc.string.is_empty()) { // something accumulated?
1358: // create STRING value: array of OP_VALUE+origin+vstring
1359: *lvalp=VL(
1360: new VString(*new String(pc.string, String::L_CLEAN)),
1361: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1362: // new pieces storage
1.206 paf 1363: pc.string.clear();
1364: pc.string_start.clear();
1.58 paf 1365: // make current result be pending for next call, return STRING for now
1.206 paf 1366: pc.pending_state=result; result=STRING;
1.58 paf 1367: }
1.67 paf 1368: if(skip_analized) {
1.206 paf 1369: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1370: }
1.58 paf 1371: return result;
1.1 paf 1372: }
1373:
1.206 paf 1374: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1375: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1376: return 1;
1.110 paf 1377: }
1.1 paf 1378:
1.110 paf 1379: static void yyprint(FILE *file, int type, YYSTYPE value) {
1380: if(type==STRING)
1.206 paf 1381: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.208 ! paf 1382: }
! 1383:
! 1384: static int is_not_whitespace(char c, int) {
! 1385: return !isspace(c);
1.110 paf 1386: }
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