Annotation of parser3/src/main/compile.y, revision 1.209
1.168 parser 1: %{
1.105 paf 2: /** @file
1.106 paf 3: Parser: compiler(lexical parser and grammar).
4:
1.204 paf 5: Copyright (c) 2001, 2003 ArtLebedev Group (http://www.artlebedev.com)
1.168 parser 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.106 paf 7:
1.209 ! paf 8: $Id: compile.y,v 1.208 2004/04/06 07:53:57 paf Exp $
1.88 paf 9: */
10:
1.106 paf 11: /**
12: @todo parser4:
13: - cache compiled code from request to request. to do that...
14: -#: make method definitions, @CLASS, @BASE, @USE instructions,
1.88 paf 15: which would be executed afterwards, and actions
16: now performed at compile time would be delayed to run time.
1.106 paf 17: -#: make cache expiration on time and on disk-change of class source
18: -#: in apache use subpools for compiled class storage
19: -#: in iis make up specialized Pool object for that
1.24 paf 20: */
21:
1.206 paf 22: #define YYSTYPE ArrayOperation*
1.9 paf 23: #define YYPARSE_PARAM pc
24: #define YYLEX_PARAM pc
25: #define YYDEBUG 1
1.106 paf 26: #define YYERROR_VERBOSE 1
1.206 paf 27: #define yyerror(msg) real_yyerror((Parse_control *)pc, msg)
1.9 paf 28: #define YYPRINT(file, type, value) yyprint(file, type, value)
1.1 paf 29:
1.206 paf 30: // includes
31:
1.1 paf 32: #include "compile_tools.h"
1.8 paf 33: #include "pa_value.h"
1.12 paf 34: #include "pa_request.h"
1.39 paf 35: #include "pa_vobject.h"
1.52 paf 36: #include "pa_vdouble.h"
1.98 paf 37: #include "pa_globals.h"
1.141 parser 38: #include "pa_vvoid.h"
1.200 paf 39: #include "pa_vmethod_frame.h"
1.39 paf 40:
1.206 paf 41: // defines
42:
1.97 paf 43: #define USE_CONTROL_METHOD_NAME "USE"
1.1 paf 44:
1.206 paf 45: // forwards
46:
47: static int real_yyerror(Parse_control* pc, char* s);
48: static void yyprint(FILE* file, int type, YYSTYPE value);
49: static int yylex(YYSTYPE* lvalp, void* pc);
1.1 paf 50:
1.8 paf 51: // local convinient inplace typecast & var
1.205 paf 52: #undef PC
1.206 paf 53: #define PC (*(Parse_control *)pc)
54: #undef POOL
1.114 paf 55: #define POOL (*PC.pool)
1.107 paf 56: #ifndef DOXYGEN
1.1 paf 57: %}
58:
59: %pure_parser
60:
1.13 paf 61: %token EON
1.4 paf 62: %token STRING
1.1 paf 63: %token BOGUS
1.55 paf 64:
1.58 paf 65: %token BAD_STRING_COMPARISON_OPERATOR
1.114 paf 66: %token BAD_HEX_LITERAL
1.171 parser 67: %token BAD_METHOD_DECL_START
1.193 paf 68: %token BAD_METHOD_PARAMETER_NAME_CHARACTER
1.209 ! paf 69: %token BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE
1.58 paf 70:
1.59 paf 71: %token LAND "&&"
1.58 paf 72: %token LOR "||"
1.193 paf 73: %token LXOR "!||"
74: %token NXOR "!|"
1.58 paf 75:
76: %token NLE "<="
77: %token NGE ">="
78: %token NEQ "=="
79: %token NNE "!="
1.195 paf 80: %token NSL "<<"
81: %token NSR ">>"
1.58 paf 82:
83: %token SLT "lt"
84: %token SGT "gt"
85: %token SLE "le"
86: %token SGE "ge"
87: %token SEQ "eq"
88: %token SNE "ne"
89:
1.67 paf 90: %token DEF "def"
91: %token IN "in"
92: %token FEXISTS "-f"
1.127 paf 93: %token DEXISTS "-d"
1.95 paf 94: %token IS "is"
1.67 paf 95:
1.57 paf 96: /* logical */
1.193 paf 97: %left "!||"
1.57 paf 98: %left "||"
99: %left "&&"
1.131 paf 100: %left '<' '>' "<=" ">=" "lt" "gt" "le" "ge"
101: %left "==" "!=" "eq" "ne"
102: %left "is" "def" "in" "-f" "-d"
1.57 paf 103:
104: /* bitwise */
1.193 paf 105: %left "!|"
1.131 paf 106: %left '|'
107: %left '&'
1.202 paf 108: %left "<<" ">>"
1.57 paf 109:
1.56 paf 110: /* numerical */
1.202 paf 111: %left '+' '-'
112: %left '*' '/' '\\' '%'
113: %left NUNARY /* unary - + */
114:
115: /* out-of-group */
116: %left '~' /* bitwise */
117: %left '!' /* logical */
1.1 paf 118:
119: %%
1.195 paf 120: all:
1.10 paf 121: one_big_piece {
1.206 paf 122: Method& method=*new Method(Method::CT_ANY,
1.81 paf 123: 0, 0, /*min, max numbered_params_count*/
1.75 paf 124: 0/*param_names*/, 0/*local_names*/,
125: $1/*parser_code*/, 0/*native_code*/);
1.206 paf 126: PC.cclass->add_method(PC.alias_method(main_method_name), method);
1.10 paf 127: }
128: | methods;
129:
130: methods: method | methods method;
131: one_big_piece: maybe_codes;
132:
1.34 paf 133: method: control_method | code_method;
134:
135: control_method: '@' STRING '\n'
1.132 paf 136: maybe_control_strings {
1.206 paf 137: const String& command=*LA2S(*$2);
1.34 paf 138: YYSTYPE strings_code=$4;
1.206 paf 139: if(strings_code->count()<1*OPERATIONS_PER_OPVALUE) {
1.114 paf 140: strcpy(PC.error, "@");
141: strcat(PC.error, command.cstr());
142: strcat(PC.error, " is empty");
1.37 paf 143: YYERROR;
144: }
1.74 paf 145: if(command==CLASS_NAME) {
1.188 paf 146: if(PC.cclass->base_class()) { // already changed from default?
1.114 paf 147: strcpy(PC.error, "class already have a name '");
148: strncat(PC.error, PC.cclass->name().cstr(), 100);
149: strcat(PC.error, "'");
1.73 paf 150: YYERROR;
151: }
1.206 paf 152: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.73 paf 153: // new class' name
1.206 paf 154: const String& name=*LA2S(*strings_code);
1.73 paf 155: // creating the class
1.206 paf 156: VStateless_class* cclass=new VClass;
157: PC.cclass=cclass;
158: PC.cclass->set_name(name);
1.73 paf 159: // append to request's classes
1.206 paf 160: PC.request.classes().put(name, cclass);
1.73 paf 161: } else {
1.206 paf 162: strcpy(PC.error, "@"CLASS_NAME" must contain only one line with class name (contains more then one)");
1.34 paf 163: YYERROR;
164: }
1.130 paf 165: } else if(command==USE_CONTROL_METHOD_NAME) {
1.206 paf 166: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE)
167: PC.request.use_file(PC.request.main_class, *LA2S(*strings_code, i));
1.130 paf 168: } else if(command==BASE_NAME) {
1.188 paf 169: if(PC.cclass->base_class()) { // already changed from default?
1.130 paf 170: strcpy(PC.error, "class already have a base '");
1.188 paf 171: strncat(PC.error, PC.cclass->base_class()->name().cstr(), 100);
1.130 paf 172: strcat(PC.error, "'");
173: YYERROR;
174: }
1.206 paf 175: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
176: const String& base_name=*LA2S(*strings_code);
177: if(Value* base_class_value=PC.request.classes().get(base_name)) {
178: // @CLASS == @BASE sanity check
179: if(VStateless_class *base_class=base_class_value->get_class()) {
180: if(PC.cclass==base_class) {
181: strcpy(PC.error, "@"CLASS_NAME" equals @"BASE_NAME);
182: YYERROR;
183: }
184: PC.cclass->get_class()->set_base(base_class);
185: } else { // they asked to derive from a class without methods ['env' & co]
186: strcpy(PC.error, base_name.cstr());
187: strcat(PC.error, ": you can not derive from this class in @"BASE_NAME);
188: YYERROR;
189: }
190: } else {
1.130 paf 191: strcpy(PC.error, base_name.cstr());
192: strcat(PC.error, ": undefined class in @"BASE_NAME);
1.73 paf 193: YYERROR;
194: }
1.34 paf 195: } else {
1.130 paf 196: strcpy(PC.error, "@"BASE_NAME" must contain sole name");
1.34 paf 197: YYERROR;
198: }
1.130 paf 199: } else {
200: strcpy(PC.error, "'");
201: strncat(PC.error, command.cstr(), MAX_STRING/2);
202: strcat(PC.error, "' invalid special name. valid names are "
203: "'"CLASS_NAME"', '"USE_CONTROL_METHOD_NAME"' and '"BASE_NAME"'");
204: YYERROR;
1.34 paf 205: }
206: };
1.132 paf 207: maybe_control_strings: empty | control_strings;
1.206 paf 208: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2) };
1.37 paf 209: control_string: maybe_string '\n';
210: maybe_string: empty | STRING;
1.34 paf 211:
1.208 paf 212: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n' {
213: PC.explicit_result=false;
1.206 paf 214: const String& name=*LA2S(*$2);
1.10 paf 215:
216: YYSTYPE params_names_code=$3;
1.206 paf 217: ArrayString* params_names=0;
218: if(int size=params_names_code->count()) {
219: params_names=new ArrayString;
220: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
221: *params_names+=LA2S(*params_names_code, i);
1.75 paf 222: }
1.10 paf 223:
224: YYSTYPE locals_names_code=$4;
1.206 paf 225: ArrayString* locals_names=0;
226: if(int size=locals_names_code->count()) {
227: locals_names=new ArrayString;
1.208 paf 228: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE) {
229: const String* local_name=LA2S(*locals_names_code, i);
230: if(*local_name==RESULT_VAR_NAME)
231: PC.explicit_result=true;
232: else
233: *locals_names+=local_name;
234: }
1.75 paf 235: }
1.10 paf 236:
1.208 paf 237: Method* method=new Method(
1.206 paf 238: //name,
1.122 paf 239: Method::CT_ANY,
1.81 paf 240: 0, 0/*min,max numbered_params_count*/,
1.76 paf 241: params_names, locals_names,
1.208 paf 242: 0/*to be filled later in next {} */, 0);
243: PC.cclass->add_method(PC.alias_method(name), *method);
244: *reinterpret_cast<Method**>(&$$)=method;
245:
246: // todo: check [][;result;]
247: } maybe_codes {
248: // fill in the code
249: reinterpret_cast<Method*>($7)->parser_code=$8;
1.8 paf 250: };
1.10 paf 251:
252: maybe_bracketed_strings: empty | bracketed_maybe_strings;
253: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
254: maybe_strings: empty | strings;
1.206 paf 255: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3) };
1.10 paf 256:
257: maybe_comment: empty | STRING;
1.1 paf 258:
259: /* codes */
260:
1.10 paf 261: maybe_codes: empty | codes;
262:
1.206 paf 263: codes: code | codes code { $$=$1; P(*$$, *$2) };
1.81 paf 264: code: write_string | action;
1.209 ! paf 265: action: get | put | call;
1.1 paf 266:
267: /* get */
268:
1.64 paf 269: get: get_value {
1.184 paf 270: $$=$1; /* stack: resulting value */
1.206 paf 271: changetail_or_append(*$$,
1.186 paf 272: OP_GET_ELEMENT, false, /*->*/OP_GET_ELEMENT__WRITE,
273: /*or */OP_WRITE_VALUE
1.184 paf 274: ); /* value=pop; wcontext.write(value) */
1.1 paf 275: };
1.163 parser 276: get_value: '$' get_name_value { $$=$2 };
1.64 paf 277: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 278: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 279: name_without_curly_rdive:
280: name_without_curly_rdive_read
281: | name_without_curly_rdive_class;
1.19 paf 282: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 283: $$=N();
284: ArrayOperation* diving_code=$1;
285: const String* first_name=LA2S(*diving_code);
1.179 paf 286: // self.xxx... -> xxx...
1.206 paf 287: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 288: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.206 paf 289: O(*yyval, OP_WITH_SELF); /* stack: starting context */
290: P(*yyval, *diving_code,
1.22 paf 291: /* skip over... */
1.206 paf 292: diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.22 paf 293: } else {
1.206 paf 294: O(*yyval, OP_WITH_READ); /* stack: starting context */
1.179 paf 295:
1.201 paf 296: // ^if ELEMENT -> ^if ELEMENT_OR_OPERATOR
1.206 paf 297: // OP_VALUE+origin+string+OP_GET_ELEMENT. -> OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
298: if(PC.in_call_value && diving_code->count()==4)
299: diving_code->put(4-1, OP_GET_ELEMENT_OR_OPERATOR);
300: P(*$$, *diving_code);
1.22 paf 301: }
302: /* diving code; stack: current context */
1.1 paf 303: };
1.206 paf 304: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2) };
305: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2) };
1.1 paf 306:
307: /* put */
308:
1.81 paf 309: put: '$' name_expr_wdive construct {
1.20 paf 310: $$=$2; /* stack: context,name */
1.206 paf 311: P(*$$, *$3); /* stack: context,name,constructor_value */
1.20 paf 312: };
1.44 paf 313: name_expr_wdive:
1.157 parser 314: name_expr_wdive_root
315: | name_expr_wdive_write
1.44 paf 316: | name_expr_wdive_class;
1.157 parser 317: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 318: $$=N();
319: ArrayOperation* diving_code=$1;
320: const String* first_name=LA2S(*diving_code);
1.179 paf 321: // $self.xxx... -> $xxx...
1.206 paf 322: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 323: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.206 paf 324: O(*$$, OP_WITH_SELF); /* stack: starting context */
325: P(*$$, *diving_code,
1.23 paf 326: /* skip over... */
1.206 paf 327: diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.23 paf 328: } else {
1.206 paf 329: O(*$$, OP_WITH_ROOT); /* stack: starting context */
330: P(*$$, *diving_code);
1.23 paf 331: }
332: /* diving code; stack: current context */
1.156 parser 333: };
1.157 parser 334: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 335: $$=N();
336: O(*$$, OP_WITH_WRITE); /* stack: starting context */
337: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 338: };
1.206 paf 339: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2) };
1.20 paf 340:
1.149 parser 341: construct:
1.163 parser 342: construct_square
343: | construct_round
344: | construct_curly
1.149 parser 345: ;
346: construct_square: '[' any_constructor_code_value ']' {
347: // stack: context, name
348: $$=$2; // stack: context, name, value
1.206 paf 349: O(*$$, OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 350: }
351: ;
1.149 parser 352: construct_round: '(' expr_value ')' {
1.206 paf 353: $$=N();
354: O(*$$, OP_PREPARE_TO_EXPRESSION);
1.149 parser 355: // stack: context, name
1.206 paf 356: P(*$$, *$2); // stack: context, name, value
357: O(*$$, OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 358: }
1.52 paf 359: ;
1.149 parser 360: construct_curly: '{' maybe_codes '}' {
361: // stack: context, name
1.206 paf 362: $$=N();
363: OA(*$$, OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 364: };
365:
1.55 paf 366: any_constructor_code_value:
1.157 parser 367: void_value /* optimized $var[] case */
1.52 paf 368: | STRING /* optimized $var[STRING] case */
1.55 paf 369: | constructor_code_value /* $var[something complex] */
1.1 paf 370: ;
1.55 paf 371: constructor_code_value: constructor_code {
1.206 paf 372: $$=N();
373: OA(*$$, OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 374: /* some code that writes to that context */
375: /* context=pop; stack: context.value() */
1.1 paf 376: };
1.55 paf 377: constructor_code: codes__excluding_sole_str_literal;
1.206 paf 378: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 379:
1.1 paf 380: /* call */
381:
1.66 paf 382: call: call_value {
383: $$=$1; /* stack: value */
1.206 paf 384: changetail_or_append(*$$,
1.186 paf 385: OP_CALL, true, /*->*/ OP_CALL__WRITE,
386: /*or */OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.66 paf 387: };
1.177 paf 388: call_value: '^' {
1.180 paf 389: PC.in_call_value=true;
1.177 paf 390: }
391: call_name {
1.180 paf 392: PC.in_call_value=false;
1.177 paf 393: }
1.154 parser 394: store_params EON { /* ^field.$method{vasya} */
395: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 396:
1.154 parser 397: YYSTYPE params_code=$5;
1.206 paf 398: if(params_code->count()==4) { // probably [] case. [OP_VALUE+origin+Void+STORE_PARAM]
399: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.140 parser 400: if(!value->is_defined()) // value is VVoid?
1.123 paf 401: params_code=0; // ^zzz[] case. don't append lone empty param.
1.186 paf 402: }
403: /* stack: context, method_junction */
1.206 paf 404: OA(*$$, OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
1.1 paf 405: };
406:
1.43 paf 407: call_name: name_without_curly_rdive;
1.38 paf 408:
1.206 paf 409: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2) };
1.69 paf 410: store_param:
411: store_square_param
412: | store_round_param
413: | store_curly_param
1.31 paf 414: ;
1.123 paf 415: store_square_param: '[' store_code_param_parts ']' {$$=$2};
1.69 paf 416: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 417: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 418: store_code_param_parts:
419: store_code_param_part
1.206 paf 420: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 421: ;
422: store_expr_param_parts:
423: store_expr_param_part
1.206 paf 424: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 425: ;
1.94 paf 426: store_curly_param_parts:
427: store_curly_param_part
1.206 paf 428: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3) }
1.94 paf 429: ;
1.120 paf 430: store_code_param_part: code_param_value {
1.32 paf 431: $$=$1;
1.206 paf 432: O(*$$, OP_STORE_PARAM);
1.120 paf 433: };
1.69 paf 434: store_expr_param_part: write_expr_value {
1.206 paf 435: $$=N();
436: OA(*$$, OP_EXPR_CODE__STORE_PARAM, $1);
1.69 paf 437: };
1.94 paf 438: store_curly_param_part: maybe_codes {
1.206 paf 439: $$=N();
440: OA(*$$, OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 441: };
1.120 paf 442: code_param_value:
1.157 parser 443: void_value /* optimized [;...] case */
1.120 paf 444: | STRING /* optimized [STRING] case */
445: | constructor_code_value /* [something complex] */
446: ;
1.90 paf 447: write_expr_value: expr_value {
1.206 paf 448: $$=N();
449: O(*$$, OP_PREPARE_TO_EXPRESSION);
450: P(*$$, *$1);
451: O(*$$, OP_WRITE_EXPR_RESULT);
1.69 paf 452: };
1.1 paf 453:
454: /* name */
455:
1.206 paf 456: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 457:
1.206 paf 458: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 459: name_step: name_advance1 '.';
460: name_advance1: name_expr_value {
1.177 paf 461: // we know that name_advance1 not called from ^xxx context
462: // so we'll not check for operator call possibility as we do in name_advance2
463:
1.1 paf 464: /* stack: context */
465: $$=$1; /* stack: context,name */
1.206 paf 466: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 467: };
468: name_advance2: name_expr_value {
469: /* stack: context */
470: $$=$1; /* stack: context,name */
1.206 paf 471: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 472: }
1.4 paf 473: | STRING BOGUS
1.1 paf 474: ;
475: name_expr_value:
1.4 paf 476: STRING /* subname_is_const */
1.1 paf 477: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 478: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 479: | name_square_code_value /* [codes] */
1.1 paf 480: ;
481: name_expr_subvar_value: '$' subvar_ref_name_rdive {
482: $$=$2;
1.206 paf 483: O(*$$, OP_GET_ELEMENT);
1.1 paf 484: };
1.4 paf 485: name_expr_with_subvar_value: STRING subvar_get_writes {
1.206 paf 486: ArrayOperation* code;
1.183 paf 487: {
1.206 paf 488: change_string_literal_to_write_string_literal(*(code=$1));
489: P(*code, *$2);
1.183 paf 490: }
1.206 paf 491: $$=N();
492: OA(*$$, OP_STRING_POOL, code);
1.1 paf 493: };
1.166 parser 494: name_square_code_value: '[' codes ']' {
1.206 paf 495: $$=N();
496: OA(*$$, OP_OBJECT_POOL, $2); /* stack: empty write context */
1.183 paf 497: /* some code that writes to that context */
498: /* context=pop; stack: context.value() */
1.160 parser 499: };
1.154 parser 500: subvar_ref_name_rdive: STRING {
1.206 paf 501: $$=N();
502: O(*$$, OP_WITH_READ);
503: P(*$$, *$1);
1.1 paf 504: };
1.206 paf 505: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 506: subvar__get_write: '$' subvar_ref_name_rdive {
507: $$=$2;
1.206 paf 508: O(*$$, OP_GET_ELEMENT__WRITE);
1.42 paf 509: };
510:
1.154 parser 511: class_prefix:
512: class_static_prefix
513: | class_constructor_prefix
514: ;
1.155 parser 515: class_static_prefix: STRING ':' {
516: $$=$1; // stack: class name string
1.206 paf 517: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
518: if(VStateless_class* base=PC.cclass->base_class()) {
519: change_string_literal_value(*$$, base->name());
1.189 paf 520: } else {
521: strcpy(PC.error, "no base class declared");
522: YYERROR;
523: }
524: }
1.206 paf 525: O(*$$, OP_GET_CLASS);
1.155 parser 526: };
527: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 528: $$=$1;
1.180 paf 529: if(!PC.in_call_value) {
1.154 parser 530: strcpy(PC.error, ":: not allowed here");
531: YYERROR;
532: }
1.206 paf 533: O(*$$, OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 534: };
535:
1.53 paf 536:
1.56 paf 537: /* expr */
1.53 paf 538:
1.81 paf 539: expr_value: expr {
1.182 paf 540: // see OP_PREPARE_TO_EXPRESSION!!
1.206 paf 541: if(($$=$1)->count()==2) // only one string literal in there?
542: change_string_literal_to_double_literal(*$$); // make that string literal Double
1.62 paf 543: };
1.56 paf 544: expr:
1.62 paf 545: STRING
1.64 paf 546: | get_value
1.66 paf 547: | call_value
1.64 paf 548: | '"' string_inside_quotes_value '"' { $$ = $2; }
1.145 parser 549: | '\'' string_inside_quotes_value '\'' { $$ = $2; }
1.60 paf 550: | '(' expr ')' { $$ = $2; }
551: /* stack: operand // stack: @operand */
1.206 paf 552: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP_NEG) }
1.202 paf 553: | '+' expr %prec NUNARY { $$=$2 }
1.206 paf 554: | '~' expr { $$=$2; O(*$$, OP_INV) }
555: | '!' expr { $$=$2; O(*$$, OP_NOT) }
556: | "def" expr { $$=$2; O(*$$, OP_DEF) }
557: | "in" expr { $$=$2; O(*$$, OP_IN) }
558: | "-f" expr { $$=$2; O(*$$, OP_FEXISTS) }
559: | "-d" expr { $$=$2; O(*$$, OP_DEXISTS) }
1.60 paf 560: /* stack: a,b // stack: a@b */
1.206 paf 561: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP_SUB) }
562: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP_ADD) }
563: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MUL) }
564: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP_DIV) }
565: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MOD) }
566: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP_INTDIV) }
567: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SL) }
568: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SR) }
569: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_AND) }
570: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_OR) }
571: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_XOR) }
572: | expr "&&" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_AND) }
573: | expr "||" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_OR) }
574: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP_LOG_XOR) }
575: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LT) }
576: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GT) }
577: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LE) }
578: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GE) }
579: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_EQ) }
580: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_NE) }
581: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LT) }
582: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GT) }
583: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LE) }
584: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GE) }
585: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_EQ) }
586: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_NE) }
587: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP_IS) }
1.56 paf 588: ;
1.55 paf 589:
1.65 paf 590: string_inside_quotes_value: maybe_codes {
1.206 paf 591: $$=N();
592: OA(*$$, OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 593: /* some code that writes to that context */
594: /* context=pop; stack: context.get_string() */
1.53 paf 595: };
1.1 paf 596:
1.27 paf 597: /* basics */
1.1 paf 598:
1.81 paf 599: write_string: STRING {
1.209 ! paf 600: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
! 601: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 602: };
603:
1.206 paf 604: void_value: /* empty */ { $$=VL(new VVoid(), 0, 0, 0) };
605: empty: /* empty */ { $$=N() };
1.1 paf 606:
607: %%
1.105 paf 608: #endif
1.1 paf 609:
610: /*
611: 000$111(2222)00
612: 000$111{3333}00
1.9 paf 613: $,^: push,=0
1.1 paf 614: 1:( { break=pop
615: 2:( ) pop
616: 3:{ } pop
617:
618: 000^111(2222)4444{33333}4000
1.9 paf 619: $,^: push,=0
1.1 paf 620: 1:( { break=pop
621: 2:( )=4
622: 3:{ }=4
623: 4:[^({]=pop
624: */
625:
1.206 paf 626: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
627: pc.source--;
628: if(pc.pos.col==0) {
629: --pc.pos.line; pc.pos.col=last_line_end_col;
630: } else
631: --pc.pos.col;
632:
633: }
634: static int yylex(YYSTYPE *lvalp, void *apc) {
635: register Parse_control& pc=*static_cast<Parse_control*>(apc);
636:
637: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 638: #define RC {result=c; goto break2; }
1.1 paf 639:
1.206 paf 640: register int c;
641: int result;
1.1 paf 642:
1.206 paf 643: if(pc.pending_state) {
644: result=pc.pending_state;
645: pc.pending_state=0;
1.1 paf 646: return result;
647: }
648:
1.206 paf 649: const char *begin=pc.source;
650: Pos begin_pos=pc.pos;
1.91 paf 651: const char *end;
1.67 paf 652: int skip_analized=0;
1.50 paf 653: while(true) {
1.206 paf 654: c=*(end=(pc.source++));
655: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 656:
1.208 paf 657: if(c=='\n')
1.206 paf 658: pc.pos_next_line();
1.208 paf 659: else
1.206 paf 660: pc.pos_next_c(c);
1.208 paf 661: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 662:
1.208 paf 663: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 664: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 665: // @SPECIAL
666: // ...
667: // @<here =
1.206 paf 668: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 669: } // continuing checks
1.206 paf 670: if(pc.ls==LS_USER) {
671: push_LS(pc, LS_DEF_NAME);
1.171 parser 672: RC;
1.175 paf 673: } else // @ in first column inside some code [when could that be?]
1.171 parser 674: result=BAD_METHOD_DECL_START;
675: goto break2;
1.209 ! paf 676: }
! 677: if(c=='^') {
1.206 paf 678: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 679: // handle after-method situation
1.206 paf 680: pop_LS(pc);
1.203 paf 681: result=EON;
682: skip_analized=-1; // return to punctuation afterwards to assure it's literality
683: goto break2;
684: }
1.206 paf 685: switch(pc.ls) {
1.169 parser 686: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
687: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
688: case LS_VAR_NAME_SIMPLE_WITH_COLON:
689: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
690: case LS_VAR_NAME_CURLY:
691: case LS_METHOD_NAME:
1.194 paf 692: case LS_USER_COMMENT:
1.169 parser 693: case LS_DEF_COMMENT:
694: // no literals in names, please
695: break;
696: default:
1.206 paf 697: switch(*pc.source) {
1.165 parser 698: // ^escaping some punctuators
1.48 paf 699: case '^': case '$': case ';':
1.126 paf 700: case '(': case ')':
1.48 paf 701: case '[': case ']':
702: case '{': case '}':
1.172 parser 703: case '"': case ':':
1.40 paf 704: if(end!=begin) {
1.206 paf 705: if(!pc.string_start)
706: pc.string_start=begin_pos;
1.40 paf 707: // append piece till ^
1.206 paf 708: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 709: }
1.63 paf 710: // reset piece 'begin' position & line
1.206 paf 711: begin=pc.source; // ->punctuation
712: begin_pos=pc.pos;
1.203 paf 713: // skip over _ after ^
1.206 paf 714: pc.source++; pc.pos.col++;
1.203 paf 715: // skip analysis = forced literal
716: continue;
1.114 paf 717:
718: // converting ^#HH into char(hex(HH))
719: case '#':
720: if(end!=begin) {
1.206 paf 721: if(!pc.string_start)
722: pc.string_start=begin_pos;
1.114 paf 723: // append piece till ^
1.206 paf 724: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 725: }
726: // #HH ?
1.206 paf 727: if(pc.source[0]=='#' && pc.source[1] && pc.source[2]) {
728: char c=
729: hex_value[(unsigned char)pc.source[1]]*0x10+
730: hex_value[(unsigned char)pc.source[2]];
731: if(c==0) {
1.114 paf 732: result=BAD_HEX_LITERAL;
733: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
734: }
735: // append char(hex(HH))
1.206 paf 736: pc.string.append(c);
1.114 paf 737: // skip over ^#HH
1.206 paf 738: pc.source+=3;
739: pc.pos.col+=3;
1.114 paf 740: // reset piece 'begin' position & line
1.206 paf 741: begin=pc.source; // ->after ^#HH
742: begin_pos=pc.pos;
1.203 paf 743: // skip analysis = forced literal
1.114 paf 744: continue;
745: }
746: break;
1.1 paf 747: }
1.169 parser 748: break;
1.203 paf 749: }
1.169 parser 750: }
1.113 paf 751: // #comment start skipping
1.206 paf 752: if(c=='#' && pc.pos.col==1) {
1.112 paf 753: if(end!=begin) {
1.206 paf 754: if(!pc.string_start)
755: pc.string_start=begin_pos;
1.112 paf 756: // append piece till #
1.206 paf 757: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 758: }
759: // fall into COMMENT lexical state [wait for \n]
1.206 paf 760: push_LS(pc, LS_USER_COMMENT);
1.175 paf 761: continue;
1.112 paf 762: }
1.206 paf 763: switch(pc.ls) {
1.10 paf 764:
765: // USER'S = NOT OURS
1.1 paf 766: case LS_USER:
1.206 paf 767: case LS_NAME_SQUARE_PART: // name.[here].xxx
768: if(pc.trim_bof)
1.153 parser 769: switch(c) {
770: case '\n': case ' ': case '\t':
1.206 paf 771: begin=pc.source;
772: begin_pos=pc.pos;
1.152 parser 773: continue; // skip it
1.153 parser 774: default:
1.206 paf 775: pc.trim_bof=false;
1.152 parser 776: }
1.48 paf 777: switch(c) {
778: case '$':
1.206 paf 779: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 780: RC;
781: case '^':
1.206 paf 782: push_LS(pc, LS_METHOD_NAME);
1.48 paf 783: RC;
1.166 parser 784: case ']':
1.206 paf 785: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 786: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 787: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 788: RC;
789: }
1.160 parser 790: break;
1.166 parser 791: case '[': // $name.[co<[>de]
1.206 paf 792: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 793: lexical_brackets_nestage++;
1.161 parser 794: break;
1.112 paf 795: }
1.209 ! paf 796: if(pc.explicit_result && c)
! 797: switch(c) {
! 798: case '\n': case ' ': case '\t':
! 799: begin=pc.source;
! 800: begin_pos=pc.pos;
! 801: continue; // skip it
! 802: default:
! 803: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
! 804: goto break2;
! 805: }
1.112 paf 806: break;
807:
808: // #COMMENT
1.194 paf 809: case LS_USER_COMMENT:
1.112 paf 810: if(c=='\n') {
811: // skip comment
1.206 paf 812: begin=pc.source;
813: begin_pos=pc.pos;
1.112 paf 814:
1.206 paf 815: pop_LS(pc);
1.112 paf 816: continue;
1.1 paf 817: }
1.48 paf 818: break;
819:
820: // STRING IN EXPRESSION
1.145 parser 821: case LS_EXPRESSION_STRING_QUOTED:
822: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 823: switch(c) {
824: case '"':
1.145 parser 825: case '\'':
826: if(
1.206 paf 827: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
828: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
829: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 830: RC;
831: }
832: break;
1.48 paf 833: case '$':
1.206 paf 834: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 835: RC;
836: case '^':
1.206 paf 837: push_LS(pc, LS_METHOD_NAME);
1.48 paf 838: RC;
1.10 paf 839: }
840: break;
841:
842: // METHOD DEFINITION
843: case LS_DEF_NAME:
1.48 paf 844: switch(c) {
845: case '[':
1.206 paf 846: pc.ls=LS_DEF_PARAMS;
1.48 paf 847: RC;
848: case '\n':
1.206 paf 849: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 850: RC;
1.10 paf 851: }
852: break;
1.48 paf 853:
1.10 paf 854: case LS_DEF_PARAMS:
1.48 paf 855: switch(c) {
1.192 paf 856: case '$': // common error
1.193 paf 857: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
858: goto break2;
1.48 paf 859: case ';':
860: RC;
861: case ']':
1.206 paf 862: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 863: RC;
1.49 paf 864: case '\n': // wrong. bailing out
1.206 paf 865: pop_LS(pc);
1.48 paf 866: RC;
1.10 paf 867: }
868: break;
1.48 paf 869:
1.10 paf 870: case LS_DEF_LOCALS:
1.48 paf 871: switch(c) {
872: case '[':
873: case ';':
874: RC;
875: case ']':
1.206 paf 876: pc.ls=LS_DEF_COMMENT;
1.48 paf 877: RC;
878: case '\n': // wrong. bailing out
1.206 paf 879: pop_LS(pc);
1.48 paf 880: RC;
1.10 paf 881: }
882: break;
1.48 paf 883:
1.10 paf 884: case LS_DEF_COMMENT:
885: if(c=='\n') {
1.206 paf 886: pop_LS(pc);
1.48 paf 887: RC;
1.37 paf 888: }
889: break;
890:
1.48 paf 891: case LS_DEF_SPECIAL_BODY:
1.175 paf 892: if(c=='\n')
1.48 paf 893: RC;
894: break;
895:
896: // (EXPRESSION)
1.69 paf 897: case LS_VAR_ROUND:
898: case LS_METHOD_ROUND:
1.48 paf 899: switch(c) {
900: case ')':
901: if(--lexical_brackets_nestage==0)
1.206 paf 902: if(pc.ls==LS_METHOD_ROUND) // method round param ended
903: pc.ls=LS_METHOD_AFTER; // look for method end
904: else // pc.ls==LS_VAR_ROUND // variable constructor ended
905: pop_LS(pc); // return to normal life
1.48 paf 906: RC;
1.194 paf 907: case '#': // comment start skipping
908: if(end!=begin) {
1.206 paf 909: if(!pc.string_start)
910: pc.string_start=begin_pos;
1.194 paf 911: // append piece till #
1.206 paf 912: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 913: }
914: // fall into COMMENT lexical state [wait for \n]
1.206 paf 915: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 916: lexical_brackets_nestage=1;
917: continue;
1.48 paf 918: case '$':
1.206 paf 919: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 920: RC;
921: case '^':
1.206 paf 922: push_LS(pc, LS_METHOD_NAME);
1.48 paf 923: RC;
924: case '(':
925: lexical_brackets_nestage++;
926: RC;
1.67 paf 927: case '-':
1.206 paf 928: switch(*pc.source) {
1.127 paf 929: case 'f': // -f
1.67 paf 930: skip_analized=1;
931: result=FEXISTS;
1.127 paf 932: goto break2;
933: case 'd': // -d
934: skip_analized=1;
935: result=DEXISTS;
936: goto break2;
1.191 paf 937: default: // minus
1.67 paf 938: result=c;
1.127 paf 939: goto break2;
940: }
1.67 paf 941: goto break2;
1.173 paf 942: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 943: case '~':
1.48 paf 944: case ';':
945: RC;
1.193 paf 946: case '&': case '|':
1.206 paf 947: if(*pc.source==c) { // && ||
1.193 paf 948: result=c=='&'?LAND:LOR;
1.67 paf 949: skip_analized=1;
1.58 paf 950: } else
951: result=c;
952: goto break2;
1.193 paf 953: case '!':
1.206 paf 954: switch(pc.source[0]) {
1.193 paf 955: case '|': // !| !||
956: skip_analized=1;
1.206 paf 957: if(pc.source[1]=='|') {
1.193 paf 958: skip_analized++;
959: result=LXOR;
960: } else
961: result=NXOR;
962: goto break2;
963: case '=': // !=
964: skip_analized=1;
965: result=NNE;
966: goto break2;
967: }
968: RC;
1.195 paf 969:
970: case '<': // <<, <=, <
1.206 paf 971: switch(*pc.source) {
1.195 paf 972: case '<': // <[<]
973: skip_analized=1; result=NSL; break;
974: case '=': // <[=]
975: skip_analized=1; result=NLE; break;
976: default: // <[]
977: result=c; break;
978: }
979: goto break2;
980: case '>': // >>, >=, >
1.206 paf 981: switch(*pc.source) {
1.195 paf 982: case '>': // >[>]
983: skip_analized=1; result=NSR; break;
984: case '=': // >[=]
985: skip_analized=1; result=NGE; 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=NEQ; break;
994: default: // =[]
995: result=c; break; // not used now
996: }
1.58 paf 997: goto break2;
1.195 paf 998:
1.48 paf 999: case '"':
1.206 paf 1000: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1001: RC;
1002: case '\'':
1.206 paf 1003: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1004: RC;
1.50 paf 1005: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1006: if(end==begin) // right after whitespace
1.206 paf 1007: if(isspace(pc.source[1])) {
1008: switch(*pc.source) {
1.117 paf 1009: // case '?': // ok [and bad cases, yacc would bark at them]
1010: case 't': // lt gt [et nt]
1011: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1012: skip_analized=1;
1013: goto break2;
1014: case 'e': // le ge ne [ee]
1015: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1016: skip_analized=1;
1017: goto break2;
1018: case 'q': // eq [lq gq nq]
1019: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1020: skip_analized=1;
1021: goto break2;
1022: }
1.67 paf 1023: }
1024: break;
1025: case 'i':
1026: if(end==begin) // right after whitespace
1.206 paf 1027: if(isspace(pc.source[1])) {
1028: switch(pc.source[0]) {
1.117 paf 1029: case 'n': // in
1.95 paf 1030: skip_analized=1;
1031: result=IN;
1032: goto break2;
1.117 paf 1033: case 's': // is
1.95 paf 1034: skip_analized=1;
1035: result=IS;
1036: goto break2;
1037: }
1.67 paf 1038: }
1039: break;
1040: case 'd':
1041: if(end==begin) // right after whitespace
1.206 paf 1042: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.67 paf 1043: skip_analized=2;
1044: result=DEF;
1.58 paf 1045: goto break2;
1.50 paf 1046: }
1.48 paf 1047: break;
1048: case ' ': case '\t': case '\n':
1.63 paf 1049: if(end!=begin) { // there were a string after previous operator?
1050: result=0; // return that string
1051: goto break2;
1.48 paf 1052: }
1.63 paf 1053: // that's a leading|traling space or after-operator-space
1054: // ignoring it
1055: // reset piece 'begin' position & line
1.206 paf 1056: begin=pc.source; // after whitespace char
1057: begin_pos=pc.pos;
1.48 paf 1058: continue;
1.1 paf 1059: }
1060: break;
1.194 paf 1061: case LS_EXPRESSION_COMMENT:
1062: if(c=='(')
1063: lexical_brackets_nestage++;
1064:
1.206 paf 1065: switch(*pc.source) {
1.194 paf 1066: case '\n': case ')':
1.206 paf 1067: if(*pc.source==')')
1.194 paf 1068: if(--lexical_brackets_nestage!=0)
1069: continue;
1070:
1071: // skip comment
1.206 paf 1072: begin=pc.source;
1073: begin_pos=pc.pos;
1.194 paf 1074:
1.206 paf 1075: pop_LS(pc);
1.194 paf 1076: continue;
1077: }
1078: break;
1.1 paf 1079:
1.10 paf 1080: // VARIABLE GET/PUT/WITH
1.166 parser 1081: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1082: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1083: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1084: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1085: if(
1.206 paf 1086: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1087: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1088: // name in expr ends also before
1.48 paf 1089: switch(c) {
1.181 paf 1090: // expression minus
1.92 paf 1091: case '-':
1.181 paf 1092: // expression integer division
1093: case '\\':
1.206 paf 1094: pop_LS(pc);
1095: pc.ungetc();
1.48 paf 1096: result=EON;
1097: goto break2;
1098: }
1099: }
1.166 parser 1100: if(
1.206 paf 1101: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1102: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1103: // name already has ':', stop before next
1104: switch(c) {
1105: case ':':
1.206 paf 1106: pop_LS(pc);
1107: pc.ungetc();
1.142 parser 1108: result=EON;
1109: goto break2;
1110: }
1111: }
1.48 paf 1112: switch(c) {
1113: case 0:
1114: case ' ': case '\t': case '\n':
1115: case ';':
1.126 paf 1116: case ']': case '}': case ')':
1117: case '"': case '\'':
1.139 parser 1118: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1119: case '+': case '*': case '/': case '%':
1120: case '&': case '|':
1121: case '=': case '!':
1.99 paf 1122: // common delimiters
1.190 paf 1123: case ',': case '?': case '#':
1.139 parser 1124: // before call
1125: case '^':
1.206 paf 1126: pop_LS(pc);
1127: pc.ungetc();
1.13 paf 1128: result=EON;
1.1 paf 1129: goto break2;
1.48 paf 1130: case '[':
1.162 parser 1131: // $name.<[>code]
1.206 paf 1132: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1133: end[-1]=='$'/*was start of get*/ ||
1134: end[-1]==':'/*was class name delim */ ||
1135: end[-1]=='.'/*was name delim */
1.162 parser 1136: )) {
1.206 paf 1137: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1138: lexical_brackets_nestage=1;
1139: RC;
1140: }
1.206 paf 1141: pc.ls=LS_VAR_SQUARE;
1.1 paf 1142: lexical_brackets_nestage=1;
1.48 paf 1143: RC;
1144: case '{':
1145: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1146: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1147: } else {
1.206 paf 1148: pc.ls=LS_VAR_CURLY;
1.48 paf 1149: lexical_brackets_nestage=1;
1150: }
1.69 paf 1151:
1.48 paf 1152: RC;
1153: case '(':
1.206 paf 1154: pc.ls=LS_VAR_ROUND;
1.1 paf 1155: lexical_brackets_nestage=1;
1.48 paf 1156: RC;
1157: case '.': // name part delim
1158: case '$': // name part subvar
1.160 parser 1159: case ':': // class<:>name
1.166 parser 1160: // go to _WITHOUT_COLON state variant...
1.206 paf 1161: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1162: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1163: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1164: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1165: // ...stop before next ':'
1.48 paf 1166: RC;
1.1 paf 1167: }
1168: break;
1.48 paf 1169:
1.1 paf 1170: case LS_VAR_NAME_CURLY:
1.48 paf 1171: switch(c) {
1.162 parser 1172: case '[':
1.166 parser 1173: // ${name.<[>code]}
1.206 paf 1174: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1175: lexical_brackets_nestage=1;
1176: RC;
1.48 paf 1177: case '}': // ${name} finished, restoring LS
1.206 paf 1178: pop_LS(pc);
1.48 paf 1179: RC;
1180: case '.': // name part delim
1181: case '$': // name part subvar
1182: case ':': // ':name' or 'class:name'
1183: RC;
1.1 paf 1184: }
1185: break;
1.48 paf 1186:
1187: case LS_VAR_SQUARE:
1188: switch(c) {
1189: case '$':
1.206 paf 1190: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1191: RC;
1192: case '^':
1.206 paf 1193: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1194: RC;
1195: case ']':
1.1 paf 1196: if(--lexical_brackets_nestage==0) {
1.206 paf 1197: pop_LS(pc);
1.48 paf 1198: RC;
1.1 paf 1199: }
1.48 paf 1200: break;
1201: case ';': // operator_or_fmt;value delim
1202: RC;
1203: case '[':
1204: lexical_brackets_nestage++;
1205: break;
1.1 paf 1206: }
1207: break;
1.48 paf 1208:
1.1 paf 1209: case LS_VAR_CURLY:
1.48 paf 1210: switch(c) {
1211: case '$':
1.206 paf 1212: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1213: RC;
1214: case '^':
1.206 paf 1215: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1216: RC;
1217: case '}':
1.1 paf 1218: if(--lexical_brackets_nestage==0) {
1.206 paf 1219: pop_LS(pc);
1.48 paf 1220: RC;
1.1 paf 1221: }
1.48 paf 1222: break;
1223: case '{':
1.1 paf 1224: lexical_brackets_nestage++;
1.48 paf 1225: break;
1226: }
1.1 paf 1227: break;
1228:
1.10 paf 1229: // METHOD CALL
1.1 paf 1230: case LS_METHOD_NAME:
1.48 paf 1231: switch(c) {
1232: case '[':
1.166 parser 1233: // ^name.<[>code].xxx
1.206 paf 1234: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1235: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1236: end[-1]==':'/*was class name delim */ ||
1237: end[-1]=='.'/*was name delim */
1.162 parser 1238: )) {
1.206 paf 1239: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1240: lexical_brackets_nestage=1;
1241: RC;
1242: }
1.206 paf 1243: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1244: lexical_brackets_nestage=1;
1.48 paf 1245: RC;
1246: case '{':
1.206 paf 1247: pc.ls=LS_METHOD_CURLY;
1.1 paf 1248: lexical_brackets_nestage=1;
1.48 paf 1249: RC;
1.69 paf 1250: case '(':
1.206 paf 1251: pc.ls=LS_METHOD_ROUND;
1.69 paf 1252: lexical_brackets_nestage=1;
1253: RC;
1.48 paf 1254: case '.': // name part delim
1255: case '$': // name part subvar
1256: case ':': // ':name' or 'class:name'
1.170 parser 1257: case '^': // ^abc^xxx wrong. bailing out
1258: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1259: case ' ': // ^if ( wrong. bailing out
1.48 paf 1260: RC;
1.1 paf 1261: }
1262: break;
1.48 paf 1263:
1264: case LS_METHOD_SQUARE:
1265: switch(c) {
1266: case '$':
1.206 paf 1267: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1268: RC;
1269: case '^':
1.206 paf 1270: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1271: RC;
1272: case ';': // param delim
1273: RC;
1274: case ']':
1.1 paf 1275: if(--lexical_brackets_nestage==0) {
1.206 paf 1276: pc.ls=LS_METHOD_AFTER;
1.48 paf 1277: RC;
1.1 paf 1278: }
1.48 paf 1279: break;
1280: case '[':
1.1 paf 1281: lexical_brackets_nestage++;
1.48 paf 1282: break;
1283: }
1.1 paf 1284: break;
1.48 paf 1285:
1.1 paf 1286: case LS_METHOD_CURLY:
1.48 paf 1287: switch(c) {
1288: case '$':
1.206 paf 1289: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1290: RC;
1291: case '^':
1.206 paf 1292: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1293: RC;
1294: case ';': // param delim
1.48 paf 1295: RC;
1296: case '}':
1.1 paf 1297: if(--lexical_brackets_nestage==0) {
1.206 paf 1298: pc.ls=LS_METHOD_AFTER;
1.48 paf 1299: RC;
1.1 paf 1300: }
1.48 paf 1301: break;
1302: case '{':
1.1 paf 1303: lexical_brackets_nestage++;
1.48 paf 1304: break;
1305: }
1.209 ! paf 1306: if(pc.explicit_result && c)
! 1307: switch(c) {
! 1308: case '\n': case ' ': case '\t':
! 1309: begin=pc.source;
! 1310: begin_pos=pc.pos;
! 1311: continue; // skip it
! 1312: default:
! 1313: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
! 1314: goto break2;
! 1315: }
1.1 paf 1316: break;
1.48 paf 1317:
1.1 paf 1318: case LS_METHOD_AFTER:
1.69 paf 1319: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1320: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1321: lexical_brackets_nestage=1;
1.48 paf 1322: RC;
1.1 paf 1323: }
1.69 paf 1324: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1325: pc.ls=LS_METHOD_CURLY;
1.69 paf 1326: lexical_brackets_nestage=1;
1327: RC;
1328: }
1329: if(c=='(') {/* ]( }( )( */
1.206 paf 1330: pc.ls=LS_METHOD_ROUND;
1.1 paf 1331: lexical_brackets_nestage=1;
1.48 paf 1332: RC;
1.1 paf 1333: }
1.206 paf 1334: pop_LS(pc);
1335: pc.ungetc();
1.13 paf 1336: result=EON;
1.1 paf 1337: goto break2;
1338: }
1.9 paf 1339: if(c==0) {
1.1 paf 1340: result=-1;
1341: break;
1342: }
1343: }
1344:
1345: break2:
1.59 paf 1346: if(end!=begin) { // there is last piece?
1347: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1348: // strip last \n
1.10 paf 1349: end--;
1.137 parser 1350: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1351: end--;
1.59 paf 1352: }
1.206 paf 1353: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1354: if(!pc.string_start)
1355: pc.string_start=begin_pos;
1.59 paf 1356: // append it
1.206 paf 1357: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1358: }
1.59 paf 1359: }
1.206 paf 1360: if(!pc.string.is_empty()) { // something accumulated?
1361: // create STRING value: array of OP_VALUE+origin+vstring
1362: *lvalp=VL(
1363: new VString(*new String(pc.string, String::L_CLEAN)),
1364: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1365: // new pieces storage
1.206 paf 1366: pc.string.clear();
1367: pc.string_start.clear();
1.58 paf 1368: // make current result be pending for next call, return STRING for now
1.206 paf 1369: pc.pending_state=result; result=STRING;
1.58 paf 1370: }
1.67 paf 1371: if(skip_analized) {
1.206 paf 1372: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1373: }
1.58 paf 1374: return result;
1.1 paf 1375: }
1376:
1.206 paf 1377: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1378: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1379: return 1;
1.110 paf 1380: }
1.1 paf 1381:
1.110 paf 1382: static void yyprint(FILE *file, int type, YYSTYPE value) {
1383: if(type==STRING)
1.206 paf 1384: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1385: }
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