Annotation of parser3/src/main/compile.y, revision 1.236
1.168 parser 1: %{
1.105 paf 2: /** @file
1.106 paf 3: Parser: compiler(lexical parser and grammar).
4:
1.215 paf 5: Copyright (c) 2001-2005 ArtLebedev Group (http://www.artlebedev.com)
1.168 parser 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.217 paf 7:
1.236 ! misha 8: $Id: compile.y,v 1.235 2009-04-29 06:48:46 misha 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"
1.226 misha 44: #define OPTIONS_CONTROL_METHOD_NAME "OPTIONS"
45: #define OPTION_ALL_VARS_LOCAL_NAME "locals"
1.230 misha 46: #define OPTION_PARTIAL_CLASS "partial"
1.1 paf 47:
1.206 paf 48: // forwards
49:
50: static int real_yyerror(Parse_control* pc, char* s);
51: static void yyprint(FILE* file, int type, YYSTYPE value);
52: static int yylex(YYSTYPE* lvalp, void* pc);
1.1 paf 53:
1.216 paf 54: static const VBool vfalse(false);
55: static const VBool vtrue(true);
56: static const VVoid vvoid;
57:
1.8 paf 58: // local convinient inplace typecast & var
1.205 paf 59: #undef PC
1.206 paf 60: #define PC (*(Parse_control *)pc)
61: #undef POOL
1.114 paf 62: #define POOL (*PC.pool)
1.107 paf 63: #ifndef DOXYGEN
1.1 paf 64: %}
65:
66: %pure_parser
67:
1.13 paf 68: %token EON
1.4 paf 69: %token STRING
1.1 paf 70: %token BOGUS
1.55 paf 71:
1.58 paf 72: %token BAD_STRING_COMPARISON_OPERATOR
1.114 paf 73: %token BAD_HEX_LITERAL
1.171 parser 74: %token BAD_METHOD_DECL_START
1.193 paf 75: %token BAD_METHOD_PARAMETER_NAME_CHARACTER
1.209 paf 76: %token BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE
1.58 paf 77:
1.59 paf 78: %token LAND "&&"
1.58 paf 79: %token LOR "||"
1.193 paf 80: %token LXOR "!||"
81: %token NXOR "!|"
1.58 paf 82:
83: %token NLE "<="
84: %token NGE ">="
85: %token NEQ "=="
86: %token NNE "!="
1.195 paf 87: %token NSL "<<"
88: %token NSR ">>"
1.58 paf 89:
90: %token SLT "lt"
91: %token SGT "gt"
92: %token SLE "le"
93: %token SGE "ge"
94: %token SEQ "eq"
95: %token SNE "ne"
96:
1.67 paf 97: %token DEF "def"
98: %token IN "in"
99: %token FEXISTS "-f"
1.127 paf 100: %token DEXISTS "-d"
1.95 paf 101: %token IS "is"
1.67 paf 102:
1.216 paf 103: %token LITERAL_TRUE "true"
104: %token LITERAL_FALSE "false"
105:
1.57 paf 106: /* logical */
1.193 paf 107: %left "!||"
1.57 paf 108: %left "||"
109: %left "&&"
1.131 paf 110: %left '<' '>' "<=" ">=" "lt" "gt" "le" "ge"
111: %left "==" "!=" "eq" "ne"
112: %left "is" "def" "in" "-f" "-d"
1.57 paf 113:
114: /* bitwise */
1.193 paf 115: %left "!|"
1.131 paf 116: %left '|'
117: %left '&'
1.202 paf 118: %left "<<" ">>"
1.57 paf 119:
1.56 paf 120: /* numerical */
1.202 paf 121: %left '+' '-'
122: %left '*' '/' '\\' '%'
123: %left NUNARY /* unary - + */
124:
125: /* out-of-group */
126: %left '~' /* bitwise */
127: %left '!' /* logical */
1.1 paf 128:
129: %%
1.195 paf 130: all:
1.10 paf 131: one_big_piece {
1.206 paf 132: Method& method=*new Method(Method::CT_ANY,
1.81 paf 133: 0, 0, /*min, max numbered_params_count*/
1.75 paf 134: 0/*param_names*/, 0/*local_names*/,
135: $1/*parser_code*/, 0/*native_code*/);
1.206 paf 136: PC.cclass->add_method(PC.alias_method(main_method_name), method);
1.10 paf 137: }
138: | methods;
139:
140: methods: method | methods method;
141: one_big_piece: maybe_codes;
142:
1.34 paf 143: method: control_method | code_method;
144:
145: control_method: '@' STRING '\n'
1.132 paf 146: maybe_control_strings {
1.206 paf 147: const String& command=*LA2S(*$2);
1.34 paf 148: YYSTYPE strings_code=$4;
1.206 paf 149: if(strings_code->count()<1*OPERATIONS_PER_OPVALUE) {
1.114 paf 150: strcpy(PC.error, "@");
151: strcat(PC.error, command.cstr());
152: strcat(PC.error, " is empty");
1.37 paf 153: YYERROR;
154: }
1.74 paf 155: if(command==CLASS_NAME) {
1.206 paf 156: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.73 paf 157: // new class' name
1.206 paf 158: const String& name=*LA2S(*strings_code);
1.73 paf 159: // creating the class
1.206 paf 160: VStateless_class* cclass=new VClass;
1.226 misha 161: PC.cclass_new=cclass;
162: PC.cclass_new->set_name(name);
1.73 paf 163: } else {
1.206 paf 164: strcpy(PC.error, "@"CLASS_NAME" must contain only one line with class name (contains more then one)");
1.34 paf 165: YYERROR;
166: }
1.130 paf 167: } else if(command==USE_CONTROL_METHOD_NAME) {
1.206 paf 168: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE)
169: PC.request.use_file(PC.request.main_class, *LA2S(*strings_code, i));
1.130 paf 170: } else if(command==BASE_NAME) {
1.226 misha 171: if(PC.append){
172: strcpy(PC.error, "can't set base while appending methods to class '");
173: strncat(PC.error, PC.cclass->name().cstr(), MAX_STRING/2);
174: strcat(PC.error, "'");
175: YYERROR;
176: }
177: PC.class_add();
1.188 paf 178: if(PC.cclass->base_class()) { // already changed from default?
1.130 paf 179: strcpy(PC.error, "class already have a base '");
1.226 misha 180: strncat(PC.error, PC.cclass->base_class()->name().cstr(), MAX_STRING/2);
1.130 paf 181: strcat(PC.error, "'");
182: YYERROR;
183: }
1.206 paf 184: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
185: const String& base_name=*LA2S(*strings_code);
186: if(Value* base_class_value=PC.request.classes().get(base_name)) {
187: // @CLASS == @BASE sanity check
188: if(VStateless_class *base_class=base_class_value->get_class()) {
189: if(PC.cclass==base_class) {
190: strcpy(PC.error, "@"CLASS_NAME" equals @"BASE_NAME);
191: YYERROR;
192: }
193: PC.cclass->get_class()->set_base(base_class);
194: } else { // they asked to derive from a class without methods ['env' & co]
195: strcpy(PC.error, base_name.cstr());
196: strcat(PC.error, ": you can not derive from this class in @"BASE_NAME);
197: YYERROR;
198: }
199: } else {
1.130 paf 200: strcpy(PC.error, base_name.cstr());
201: strcat(PC.error, ": undefined class in @"BASE_NAME);
1.73 paf 202: YYERROR;
203: }
1.34 paf 204: } else {
1.130 paf 205: strcpy(PC.error, "@"BASE_NAME" must contain sole name");
1.34 paf 206: YYERROR;
207: }
1.223 misha 208: } else if(command==OPTIONS_CONTROL_METHOD_NAME) {
209: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE) {
210: const String& option=*LA2S(*strings_code, i);
1.226 misha 211: if(option==OPTION_ALL_VARS_LOCAL_NAME){
212: PC.set_all_vars_local();
1.230 misha 213: } else if(option==OPTION_PARTIAL_CLASS){
214: if(PC.cclass_new){
215: if(VStateless_class* existed=PC.get_existed_class(PC.cclass_new)){
216: if(!PC.reuse_existed_class(existed)){
217: strcpy(PC.error, "can't append methods to '");
218: strncat(PC.error, PC.cclass_new->name().cstr(), MAX_STRING/2);
219: strcat(PC.error, "' - the class wasn't marked as partial");
220: YYERROR;
221: }
1.226 misha 222: } else {
1.230 misha 223: // mark new class as partial. we can add methods to it later.
224: PC.cclass_new->set_partial();
1.226 misha 225: }
1.230 misha 226: } else {
227: strcpy(PC.error, "'"OPTION_PARTIAL_CLASS"' option should be used straight after @"CLASS_NAME);
1.226 misha 228: YYERROR;
229: }
1.223 misha 230: } else {
1.226 misha 231: strcpy(PC.error, "'");
232: strncat(PC.error, option.cstr(), MAX_STRING/2);
233: strcat(PC.error, "' invalid option. valid options are "
1.230 misha 234: "'"OPTION_PARTIAL_CLASS"' and '"OPTION_ALL_VARS_LOCAL_NAME"'");
1.223 misha 235: YYERROR;
236: }
237: }
1.130 paf 238: } else {
239: strcpy(PC.error, "'");
240: strncat(PC.error, command.cstr(), MAX_STRING/2);
241: strcat(PC.error, "' invalid special name. valid names are "
1.223 misha 242: "'"CLASS_NAME"', '"USE_CONTROL_METHOD_NAME"', '"BASE_NAME"' and '"OPTIONS_CONTROL_METHOD_NAME"'.");
1.130 paf 243: YYERROR;
1.34 paf 244: }
245: };
1.132 paf 246: maybe_control_strings: empty | control_strings;
1.206 paf 247: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2) };
1.37 paf 248: control_string: maybe_string '\n';
249: maybe_string: empty | STRING;
1.34 paf 250:
1.222 misha 251: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n' {
1.226 misha 252: PC.class_add();
1.208 paf 253: PC.explicit_result=false;
1.10 paf 254:
255: YYSTYPE params_names_code=$3;
1.206 paf 256: ArrayString* params_names=0;
257: if(int size=params_names_code->count()) {
258: params_names=new ArrayString;
259: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
260: *params_names+=LA2S(*params_names_code, i);
1.75 paf 261: }
1.10 paf 262:
263: YYSTYPE locals_names_code=$4;
1.206 paf 264: ArrayString* locals_names=0;
1.223 misha 265: bool all_vars_local=false;
1.206 paf 266: if(int size=locals_names_code->count()) {
267: locals_names=new ArrayString;
1.208 paf 268: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE) {
269: const String* local_name=LA2S(*locals_names_code, i);
270: if(*local_name==RESULT_VAR_NAME)
271: PC.explicit_result=true;
1.226 misha 272: else if(*local_name==OPTION_ALL_VARS_LOCAL_NAME)
1.223 misha 273: all_vars_local=true;
1.208 paf 274: else
275: *locals_names+=local_name;
276: }
1.75 paf 277: }
1.231 misha 278: if(!all_vars_local && PC.cclass && PC.cclass->is_vars_local())
1.223 misha 279: all_vars_local=true;
1.10 paf 280:
1.208 paf 281: Method* method=new Method(
1.206 paf 282: //name,
1.122 paf 283: Method::CT_ANY,
1.81 paf 284: 0, 0/*min,max numbered_params_count*/,
1.76 paf 285: params_names, locals_names,
1.223 misha 286: 0/*to be filled later in next {} */, 0, all_vars_local);
1.221 misha 287:
1.208 paf 288: *reinterpret_cast<Method**>(&$$)=method;
289:
290: // todo: check [][;result;]
1.222 misha 291: } maybe_codes {
1.231 misha 292: Method& method=*reinterpret_cast<Method*>($7);
293: // fill in the code
294: method.parser_code=$8;
295:
296: // register in class
297: const String& name=*LA2S(*$2);
298: PC.cclass->add_method(PC.alias_method(name), method);
1.8 paf 299: };
1.10 paf 300:
301: maybe_bracketed_strings: empty | bracketed_maybe_strings;
302: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
303: maybe_strings: empty | strings;
1.206 paf 304: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3) };
1.10 paf 305:
306: maybe_comment: empty | STRING;
1.1 paf 307:
308: /* codes */
309:
1.10 paf 310: maybe_codes: empty | codes;
311:
1.206 paf 312: codes: code | codes code { $$=$1; P(*$$, *$2) };
1.81 paf 313: code: write_string | action;
1.209 paf 314: action: get | put | call;
1.1 paf 315:
316: /* get */
317:
1.64 paf 318: get: get_value {
1.184 paf 319: $$=$1; /* stack: resulting value */
1.235 misha 320: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.233 misha 321: if(!replace_top_opcode(*$$, OP::OP_VALUE__GET_ELEMENT, OP::OP_VALUE__GET_ELEMENT__WRITE))
1.235 misha 322: #endif
1.233 misha 323: changetail_or_append(*$$,
324: OP::OP_GET_ELEMENT, false, /*->*/OP::OP_GET_ELEMENT__WRITE,
325: /*or */OP::OP_WRITE_VALUE
326: ); /* value=pop; wcontext.write(value) */
1.1 paf 327: };
1.163 parser 328: get_value: '$' get_name_value { $$=$2 };
1.64 paf 329: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 330: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 331: name_without_curly_rdive:
332: name_without_curly_rdive_read
333: | name_without_curly_rdive_class;
1.19 paf 334: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 335: $$=N();
336: ArrayOperation* diving_code=$1;
337: const String* first_name=LA2S(*diving_code);
1.179 paf 338: // self.xxx... -> xxx...
1.206 paf 339: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 340: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.229 misha 341: O(*yyval, OP::OP_WITH_SELF); /* stack: starting context */
1.206 paf 342: P(*yyval, *diving_code,
1.22 paf 343: /* skip over... */
1.229 misha 344: diving_code->count()>=4?4/*OP::OP_VALUE+origin+string+OP::OP_GET_ELEMENTx*/:3/*OP::OP_+origin+string*/);
1.22 paf 345: } else {
1.233 misha 346: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.236 ! misha 347: size_t count=diving_code->count();
! 348: if(count==4 || (count>4 && PC.in_call_value)){ // optimisations for popular simple cases
1.233 misha 349: O(*yyval,
1.236 ! misha 350: (count==4 && PC.in_call_value) // ^call
1.233 misha 351: ? OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR // OP_VALUE+origin+string+OP_GET_ELEMENT -> OP_VALUE__GET_ELEMENT_OR_OPERATOR+origin+string
352: : OP::OP_VALUE__GET_ELEMENT // OP_VALUE+origin+string+OP_GET_ELEMENT -> OP_VALUE__GET_ELEMENT+origin+string
353: );
1.236 ! misha 354: P(*$$, *diving_code, 1/*offset*/, 2/*limit*/); // copy origin+value
! 355: if(count>4)
! 356: P(*$$, *diving_code, 4/*offset*/); // copy tail
1.233 misha 357: } else {
358: O(*yyval, OP::OP_WITH_READ); /* stack: starting context */
359: P(*$$, *diving_code);
360: }
361: #else
1.229 misha 362: O(*yyval, OP::OP_WITH_READ); /* stack: starting context */
1.179 paf 363:
1.201 paf 364: // ^if ELEMENT -> ^if ELEMENT_OR_OPERATOR
1.206 paf 365: // OP_VALUE+origin+string+OP_GET_ELEMENT. -> OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
366: if(PC.in_call_value && diving_code->count()==4)
1.229 misha 367: diving_code->put(4-1, OP::OP_GET_ELEMENT_OR_OPERATOR);
1.206 paf 368: P(*$$, *diving_code);
1.233 misha 369: #endif
1.22 paf 370: }
371: /* diving code; stack: current context */
1.1 paf 372: };
1.206 paf 373: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2) };
374: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2) };
1.1 paf 375:
376: /* put */
377:
1.81 paf 378: put: '$' name_expr_wdive construct {
1.20 paf 379: $$=$2; /* stack: context,name */
1.206 paf 380: P(*$$, *$3); /* stack: context,name,constructor_value */
1.20 paf 381: };
1.44 paf 382: name_expr_wdive:
1.157 parser 383: name_expr_wdive_root
384: | name_expr_wdive_write
1.44 paf 385: | name_expr_wdive_class;
1.157 parser 386: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 387: $$=N();
388: ArrayOperation* diving_code=$1;
389: const String* first_name=LA2S(*diving_code);
1.179 paf 390: // $self.xxx... -> $xxx...
1.206 paf 391: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 392: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.229 misha 393: O(*$$, OP::OP_WITH_SELF); /* stack: starting context */
1.206 paf 394: P(*$$, *diving_code,
1.23 paf 395: /* skip over... */
1.229 misha 396: diving_code->count()>=4?4/*OP::OP_VALUE+origin+string+OP::OP_GET_ELEMENTx*/:3/*OP::OP_+origin+string*/);
1.23 paf 397: } else {
1.229 misha 398: O(*$$, OP::OP_WITH_ROOT); /* stack: starting context */
1.206 paf 399: P(*$$, *diving_code);
1.23 paf 400: }
401: /* diving code; stack: current context */
1.156 parser 402: };
1.157 parser 403: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 404: $$=N();
1.229 misha 405: O(*$$, OP::OP_WITH_WRITE); /* stack: starting context */
1.206 paf 406: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 407: };
1.206 paf 408: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2) };
1.20 paf 409:
1.149 parser 410: construct:
1.163 parser 411: construct_square
412: | construct_round
413: | construct_curly
1.149 parser 414: ;
1.211 paf 415: construct_square: '[' {
416: // allow $result_or_other_variable[ letters here any time ]
417: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
418: } any_constructor_code_value {
1.213 paf 419: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.211 paf 420: } ']' {
1.149 parser 421: // stack: context, name
1.211 paf 422: $$=$3; // stack: context, name, value
1.229 misha 423: O(*$$, OP::OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 424: }
425: ;
1.149 parser 426: construct_round: '(' expr_value ')' {
1.206 paf 427: $$=N();
1.229 misha 428: O(*$$, OP::OP_PREPARE_TO_EXPRESSION);
1.149 parser 429: // stack: context, name
1.206 paf 430: P(*$$, *$2); // stack: context, name, value
1.229 misha 431: O(*$$, OP::OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 432: }
1.52 paf 433: ;
1.149 parser 434: construct_curly: '{' maybe_codes '}' {
435: // stack: context, name
1.206 paf 436: $$=N();
1.229 misha 437: OA(*$$, OP::OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 438: };
439:
1.55 paf 440: any_constructor_code_value:
1.157 parser 441: void_value /* optimized $var[] case */
1.52 paf 442: | STRING /* optimized $var[STRING] case */
1.55 paf 443: | constructor_code_value /* $var[something complex] */
1.1 paf 444: ;
1.55 paf 445: constructor_code_value: constructor_code {
1.206 paf 446: $$=N();
1.229 misha 447: OA(*$$, OP::OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 448: /* some code that writes to that context */
449: /* context=pop; stack: context.value() */
1.1 paf 450: };
1.55 paf 451: constructor_code: codes__excluding_sole_str_literal;
1.206 paf 452: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 453:
1.1 paf 454: /* call */
455:
1.66 paf 456: call: call_value {
457: $$=$1; /* stack: value */
1.206 paf 458: changetail_or_append(*$$,
1.229 misha 459: OP::OP_CALL, true, /*->*/ OP::OP_CALL__WRITE,
460: /*or */OP::OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.66 paf 461: };
1.177 paf 462: call_value: '^' {
1.180 paf 463: PC.in_call_value=true;
1.177 paf 464: }
465: call_name {
1.180 paf 466: PC.in_call_value=false;
1.177 paf 467: }
1.154 parser 468: store_params EON { /* ^field.$method{vasya} */
469: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 470:
1.154 parser 471: YYSTYPE params_code=$5;
1.234 misha 472: if(params_code->count()==3) { // probably [] case. [OP::OP_VALUE+origin+Void]
1.206 paf 473: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.219 paf 474: if(value->is_void()) // value is VVoid?
1.123 paf 475: params_code=0; // ^zzz[] case. don't append lone empty param.
1.186 paf 476: }
477: /* stack: context, method_junction */
1.229 misha 478: OA(*$$, OP::OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
1.1 paf 479: };
480:
1.43 paf 481: call_name: name_without_curly_rdive;
1.38 paf 482:
1.206 paf 483: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2) };
1.69 paf 484: store_param:
485: store_square_param
486: | store_round_param
487: | store_curly_param
1.31 paf 488: ;
1.210 paf 489: store_square_param: '[' {
1.211 paf 490: // allow ^call[ letters here any time ]
1.210 paf 491: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
492: } store_code_param_parts {
1.213 paf 493: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.210 paf 494: } ']' {$$=$3};
1.69 paf 495: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 496: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 497: store_code_param_parts:
498: store_code_param_part
1.206 paf 499: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 500: ;
501: store_expr_param_parts:
502: store_expr_param_part
1.206 paf 503: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 504: ;
1.94 paf 505: store_curly_param_parts:
506: store_curly_param_part
1.206 paf 507: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3) }
1.94 paf 508: ;
1.120 paf 509: store_code_param_part: code_param_value {
1.32 paf 510: $$=$1;
1.120 paf 511: };
1.214 paf 512: store_expr_param_part: expr_value {
513: YYSTYPE expr_code=$1;
1.215 paf 514: if(expr_code->count()==3
1.234 misha 515: && (*expr_code)[0].code==OP::OP_VALUE) { // optimizing (double/bool/incidently 'string' too) case. [OP::OP_VALUE+origin+Double]. no evaluating
1.214 paf 516: $$=expr_code;
517: } else {
518: ArrayOperation* code=N();
1.229 misha 519: O(*code, OP::OP_PREPARE_TO_EXPRESSION);
1.214 paf 520: P(*code, *expr_code);
1.229 misha 521: O(*code, OP::OP_WRITE_EXPR_RESULT);
1.214 paf 522: $$=N();
1.229 misha 523: OA(*$$, OP::OP_EXPR_CODE__STORE_PARAM, code);
1.214 paf 524: }
1.69 paf 525: };
1.94 paf 526: store_curly_param_part: maybe_codes {
1.206 paf 527: $$=N();
1.229 misha 528: OA(*$$, OP::OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 529: };
1.120 paf 530: code_param_value:
1.157 parser 531: void_value /* optimized [;...] case */
1.120 paf 532: | STRING /* optimized [STRING] case */
533: | constructor_code_value /* [something complex] */
534: ;
1.1 paf 535:
536: /* name */
537:
1.206 paf 538: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 539:
1.206 paf 540: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 541: name_step: name_advance1 '.';
542: name_advance1: name_expr_value {
1.177 paf 543: // we know that name_advance1 not called from ^xxx context
544: // so we'll not check for operator call possibility as we do in name_advance2
545:
1.1 paf 546: /* stack: context */
547: $$=$1; /* stack: context,name */
1.229 misha 548: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 549: };
550: name_advance2: name_expr_value {
551: /* stack: context */
552: $$=$1; /* stack: context,name */
1.229 misha 553: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 554: }
1.4 paf 555: | STRING BOGUS
1.1 paf 556: ;
557: name_expr_value:
1.4 paf 558: STRING /* subname_is_const */
1.1 paf 559: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 560: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 561: | name_square_code_value /* [codes] */
1.1 paf 562: ;
563: name_expr_subvar_value: '$' subvar_ref_name_rdive {
564: $$=$2;
1.229 misha 565: O(*$$, OP::OP_GET_ELEMENT);
1.1 paf 566: };
1.4 paf 567: name_expr_with_subvar_value: STRING subvar_get_writes {
1.206 paf 568: ArrayOperation* code;
1.183 paf 569: {
1.206 paf 570: change_string_literal_to_write_string_literal(*(code=$1));
571: P(*code, *$2);
1.183 paf 572: }
1.206 paf 573: $$=N();
1.229 misha 574: OA(*$$, OP::OP_STRING_POOL, code);
1.1 paf 575: };
1.212 paf 576: name_square_code_value: '[' {
577: // allow $result_or_other_variable[ letters here any time ]
578: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
579: } codes {
1.213 paf 580: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.212 paf 581: } ']' {
1.206 paf 582: $$=N();
1.229 misha 583: OA(*$$, OP::OP_OBJECT_POOL, $3); /* stack: empty write context */
1.183 paf 584: /* some code that writes to that context */
585: /* context=pop; stack: context.value() */
1.160 parser 586: };
1.154 parser 587: subvar_ref_name_rdive: STRING {
1.206 paf 588: $$=N();
1.229 misha 589: O(*$$, OP::OP_WITH_READ);
1.206 paf 590: P(*$$, *$1);
1.1 paf 591: };
1.206 paf 592: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 593: subvar__get_write: '$' subvar_ref_name_rdive {
594: $$=$2;
1.229 misha 595: O(*$$, OP::OP_GET_ELEMENT__WRITE);
1.42 paf 596: };
597:
1.154 parser 598: class_prefix:
599: class_static_prefix
600: | class_constructor_prefix
601: ;
1.155 parser 602: class_static_prefix: STRING ':' {
603: $$=$1; // stack: class name string
1.206 paf 604: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
605: if(VStateless_class* base=PC.cclass->base_class()) {
606: change_string_literal_value(*$$, base->name());
1.189 paf 607: } else {
608: strcpy(PC.error, "no base class declared");
609: YYERROR;
610: }
611: }
1.233 misha 612: #ifdef OPTIMIZE_BYTECODE_GET_CLASS
613: // OP_VALUE+origin+string+OP_GET_CLASS -> OP_VALUE__GET_CLASS+origin+string
614: replace_top_opcode(*$$, OP::OP_VALUE, OP::OP_VALUE__GET_CLASS, true/*assert if top opcode != OP_VALUE*/)
615: #else
1.229 misha 616: O(*$$, OP::OP_GET_CLASS);
1.233 misha 617: #endif
1.155 parser 618: };
619: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 620: $$=$1;
1.180 paf 621: if(!PC.in_call_value) {
1.154 parser 622: strcpy(PC.error, ":: not allowed here");
623: YYERROR;
624: }
1.229 misha 625: O(*$$, OP::OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 626: };
627:
1.53 paf 628:
1.56 paf 629: /* expr */
1.53 paf 630:
1.214 paf 631: expr_value: expr;
1.56 paf 632: expr:
1.214 paf 633: double_or_STRING
1.216 paf 634: | true_value
635: | false_value
1.64 paf 636: | get_value
1.66 paf 637: | call_value
1.216 paf 638: | '"' string_inside_quotes_value '"' { $$ = $2 }
639: | '\'' string_inside_quotes_value '\'' { $$ = $2 }
1.60 paf 640: | '(' expr ')' { $$ = $2; }
641: /* stack: operand // stack: @operand */
1.229 misha 642: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP::OP_NEG) }
1.202 paf 643: | '+' expr %prec NUNARY { $$=$2 }
1.229 misha 644: | '~' expr { $$=$2; O(*$$, OP::OP_INV) }
645: | '!' expr { $$=$2; O(*$$, OP::OP_NOT) }
646: | "def" expr { $$=$2; O(*$$, OP::OP_DEF) }
647: | "in" expr { $$=$2; O(*$$, OP::OP_IN) }
648: | "-f" expr { $$=$2; O(*$$, OP::OP_FEXISTS) }
649: | "-d" expr { $$=$2; O(*$$, OP::OP_DEXISTS) }
1.60 paf 650: /* stack: a,b // stack: a@b */
1.229 misha 651: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_SUB) }
652: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_ADD) }
653: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MUL) }
654: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_DIV) }
655: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MOD) }
656: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_INTDIV) }
657: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SL) }
658: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SR) }
659: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_AND) }
660: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_OR) }
661: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_XOR) }
662: | expr "&&" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_AND) }
663: | expr "||" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_OR) }
664: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_LOG_XOR) }
665: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LT) }
666: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GT) }
667: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LE) }
668: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GE) }
669: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_EQ) }
670: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_NE) }
671: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LT) }
672: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GT) }
673: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LE) }
674: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GE) }
675: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_EQ) }
676: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_NE) }
677: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_IS) }
1.56 paf 678: ;
1.214 paf 679:
680: double_or_STRING: STRING {
681: // optimized from OP_STRING->OP_VALUE for doubles
682: maybe_change_string_literal_to_double_literal(*($$=$1));
683: };
1.55 paf 684:
1.65 paf 685: string_inside_quotes_value: maybe_codes {
1.206 paf 686: $$=N();
1.229 misha 687: OA(*$$, OP::OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 688: /* some code that writes to that context */
689: /* context=pop; stack: context.get_string() */
1.53 paf 690: };
1.1 paf 691:
1.27 paf 692: /* basics */
1.1 paf 693:
1.81 paf 694: write_string: STRING {
1.209 paf 695: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
696: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 697: };
698:
1.216 paf 699: void_value: /* empty */ { $$=VL(/*we know that we will not change it*/const_cast<VVoid*>(&vvoid), 0, 0, 0) }
700: true_value: "true" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vtrue), 0, 0, 0) }
701: false_value: "false" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vfalse), 0, 0, 0) }
702:
1.206 paf 703: empty: /* empty */ { $$=N() };
1.1 paf 704:
705: %%
1.105 paf 706: #endif
1.1 paf 707:
708: /*
709: 000$111(2222)00
710: 000$111{3333}00
1.9 paf 711: $,^: push,=0
1.1 paf 712: 1:( { break=pop
713: 2:( ) pop
714: 3:{ } pop
715:
716: 000^111(2222)4444{33333}4000
1.9 paf 717: $,^: push,=0
1.1 paf 718: 1:( { break=pop
719: 2:( )=4
720: 3:{ }=4
721: 4:[^({]=pop
722: */
723:
1.206 paf 724: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
725: pc.source--;
726: if(pc.pos.col==0) {
727: --pc.pos.line; pc.pos.col=last_line_end_col;
728: } else
729: --pc.pos.col;
730:
731: }
732: static int yylex(YYSTYPE *lvalp, void *apc) {
733: register Parse_control& pc=*static_cast<Parse_control*>(apc);
734:
735: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 736: #define RC {result=c; goto break2; }
1.1 paf 737:
1.206 paf 738: register int c;
739: int result;
1.1 paf 740:
1.206 paf 741: if(pc.pending_state) {
742: result=pc.pending_state;
743: pc.pending_state=0;
1.1 paf 744: return result;
745: }
746:
1.206 paf 747: const char *begin=pc.source;
748: Pos begin_pos=pc.pos;
1.91 paf 749: const char *end;
1.67 paf 750: int skip_analized=0;
1.50 paf 751: while(true) {
1.206 paf 752: c=*(end=(pc.source++));
753: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 754:
1.208 paf 755: if(c=='\n')
1.206 paf 756: pc.pos_next_line();
1.208 paf 757: else
1.206 paf 758: pc.pos_next_c(c);
1.208 paf 759: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 760:
1.208 paf 761: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 762: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 763: // @SPECIAL
764: // ...
765: // @<here =
1.206 paf 766: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 767: } // continuing checks
1.206 paf 768: if(pc.ls==LS_USER) {
769: push_LS(pc, LS_DEF_NAME);
1.171 parser 770: RC;
1.175 paf 771: } else // @ in first column inside some code [when could that be?]
1.171 parser 772: result=BAD_METHOD_DECL_START;
773: goto break2;
1.209 paf 774: }
775: if(c=='^') {
1.206 paf 776: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 777: // handle after-method situation
1.206 paf 778: pop_LS(pc);
1.203 paf 779: result=EON;
780: skip_analized=-1; // return to punctuation afterwards to assure it's literality
781: goto break2;
782: }
1.206 paf 783: switch(pc.ls) {
1.169 parser 784: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
785: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
786: case LS_VAR_NAME_SIMPLE_WITH_COLON:
787: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
788: case LS_VAR_NAME_CURLY:
789: case LS_METHOD_NAME:
1.194 paf 790: case LS_USER_COMMENT:
1.169 parser 791: case LS_DEF_COMMENT:
792: // no literals in names, please
793: break;
794: default:
1.206 paf 795: switch(*pc.source) {
1.165 parser 796: // ^escaping some punctuators
1.228 misha 797: case '^': case '$': case ';': case '@':
1.126 paf 798: case '(': case ')':
1.48 paf 799: case '[': case ']':
800: case '{': case '}':
1.172 parser 801: case '"': case ':':
1.40 paf 802: if(end!=begin) {
1.206 paf 803: if(!pc.string_start)
804: pc.string_start=begin_pos;
1.40 paf 805: // append piece till ^
1.206 paf 806: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 807: }
1.63 paf 808: // reset piece 'begin' position & line
1.206 paf 809: begin=pc.source; // ->punctuation
810: begin_pos=pc.pos;
1.203 paf 811: // skip over _ after ^
1.206 paf 812: pc.source++; pc.pos.col++;
1.203 paf 813: // skip analysis = forced literal
814: continue;
1.114 paf 815:
816: // converting ^#HH into char(hex(HH))
817: case '#':
818: if(end!=begin) {
1.206 paf 819: if(!pc.string_start)
820: pc.string_start=begin_pos;
1.114 paf 821: // append piece till ^
1.206 paf 822: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 823: }
824: // #HH ?
1.228 misha 825: if(pc.source[1] && isxdigit(pc.source[1]) && pc.source[2] && isxdigit(pc.source[2])) {
1.218 paf 826: char c=(char)(
1.206 paf 827: hex_value[(unsigned char)pc.source[1]]*0x10+
1.218 paf 828: hex_value[(unsigned char)pc.source[2]]);
1.206 paf 829: if(c==0) {
1.114 paf 830: result=BAD_HEX_LITERAL;
831: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
832: }
833: // append char(hex(HH))
1.206 paf 834: pc.string.append(c);
1.114 paf 835: // skip over ^#HH
1.206 paf 836: pc.source+=3;
837: pc.pos.col+=3;
1.114 paf 838: // reset piece 'begin' position & line
1.206 paf 839: begin=pc.source; // ->after ^#HH
840: begin_pos=pc.pos;
1.203 paf 841: // skip analysis = forced literal
1.114 paf 842: continue;
843: }
1.228 misha 844: // just escaped char
845: // reset piece 'begin' position & line
846: begin=pc.source;
847: begin_pos=pc.pos;
848: // skip over _ after ^
849: pc.source++; pc.pos.col++;
850: // skip analysis = forced literal
851: continue;
1.1 paf 852: }
1.169 parser 853: break;
1.203 paf 854: }
1.169 parser 855: }
1.113 paf 856: // #comment start skipping
1.206 paf 857: if(c=='#' && pc.pos.col==1) {
1.112 paf 858: if(end!=begin) {
1.206 paf 859: if(!pc.string_start)
860: pc.string_start=begin_pos;
1.112 paf 861: // append piece till #
1.206 paf 862: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 863: }
864: // fall into COMMENT lexical state [wait for \n]
1.206 paf 865: push_LS(pc, LS_USER_COMMENT);
1.175 paf 866: continue;
1.112 paf 867: }
1.206 paf 868: switch(pc.ls) {
1.10 paf 869:
870: // USER'S = NOT OURS
1.1 paf 871: case LS_USER:
1.206 paf 872: case LS_NAME_SQUARE_PART: // name.[here].xxx
873: if(pc.trim_bof)
1.153 parser 874: switch(c) {
875: case '\n': case ' ': case '\t':
1.206 paf 876: begin=pc.source;
877: begin_pos=pc.pos;
1.152 parser 878: continue; // skip it
1.153 parser 879: default:
1.206 paf 880: pc.trim_bof=false;
1.152 parser 881: }
1.48 paf 882: switch(c) {
883: case '$':
1.206 paf 884: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 885: RC;
886: case '^':
1.206 paf 887: push_LS(pc, LS_METHOD_NAME);
1.48 paf 888: RC;
1.166 parser 889: case ']':
1.206 paf 890: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 891: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 892: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 893: RC;
894: }
1.160 parser 895: break;
1.166 parser 896: case '[': // $name.[co<[>de]
1.206 paf 897: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 898: lexical_brackets_nestage++;
1.161 parser 899: break;
1.112 paf 900: }
1.209 paf 901: if(pc.explicit_result && c)
902: switch(c) {
903: case '\n': case ' ': case '\t':
904: begin=pc.source;
905: begin_pos=pc.pos;
906: continue; // skip it
907: default:
908: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
909: goto break2;
910: }
1.112 paf 911: break;
912:
913: // #COMMENT
1.194 paf 914: case LS_USER_COMMENT:
1.112 paf 915: if(c=='\n') {
916: // skip comment
1.206 paf 917: begin=pc.source;
918: begin_pos=pc.pos;
1.112 paf 919:
1.206 paf 920: pop_LS(pc);
1.112 paf 921: continue;
1.1 paf 922: }
1.48 paf 923: break;
924:
925: // STRING IN EXPRESSION
1.145 parser 926: case LS_EXPRESSION_STRING_QUOTED:
927: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 928: switch(c) {
929: case '"':
1.145 parser 930: case '\'':
931: if(
1.206 paf 932: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
933: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
934: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 935: RC;
936: }
937: break;
1.48 paf 938: case '$':
1.206 paf 939: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 940: RC;
941: case '^':
1.206 paf 942: push_LS(pc, LS_METHOD_NAME);
1.48 paf 943: RC;
1.10 paf 944: }
945: break;
946:
947: // METHOD DEFINITION
948: case LS_DEF_NAME:
1.48 paf 949: switch(c) {
950: case '[':
1.206 paf 951: pc.ls=LS_DEF_PARAMS;
1.48 paf 952: RC;
953: case '\n':
1.206 paf 954: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 955: RC;
1.10 paf 956: }
957: break;
1.48 paf 958:
1.10 paf 959: case LS_DEF_PARAMS:
1.48 paf 960: switch(c) {
1.192 paf 961: case '$': // common error
1.193 paf 962: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
963: goto break2;
1.48 paf 964: case ';':
965: RC;
966: case ']':
1.206 paf 967: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 968: RC;
1.49 paf 969: case '\n': // wrong. bailing out
1.206 paf 970: pop_LS(pc);
1.48 paf 971: RC;
1.10 paf 972: }
973: break;
1.48 paf 974:
1.10 paf 975: case LS_DEF_LOCALS:
1.48 paf 976: switch(c) {
977: case '[':
978: case ';':
979: RC;
980: case ']':
1.206 paf 981: pc.ls=LS_DEF_COMMENT;
1.48 paf 982: RC;
983: case '\n': // wrong. bailing out
1.206 paf 984: pop_LS(pc);
1.48 paf 985: RC;
1.10 paf 986: }
987: break;
1.48 paf 988:
1.10 paf 989: case LS_DEF_COMMENT:
990: if(c=='\n') {
1.206 paf 991: pop_LS(pc);
1.48 paf 992: RC;
1.37 paf 993: }
994: break;
995:
1.48 paf 996: case LS_DEF_SPECIAL_BODY:
1.175 paf 997: if(c=='\n')
1.48 paf 998: RC;
999: break;
1000:
1001: // (EXPRESSION)
1.69 paf 1002: case LS_VAR_ROUND:
1003: case LS_METHOD_ROUND:
1.48 paf 1004: switch(c) {
1005: case ')':
1006: if(--lexical_brackets_nestage==0)
1.206 paf 1007: if(pc.ls==LS_METHOD_ROUND) // method round param ended
1008: pc.ls=LS_METHOD_AFTER; // look for method end
1009: else // pc.ls==LS_VAR_ROUND // variable constructor ended
1010: pop_LS(pc); // return to normal life
1.48 paf 1011: RC;
1.194 paf 1012: case '#': // comment start skipping
1013: if(end!=begin) {
1.206 paf 1014: if(!pc.string_start)
1015: pc.string_start=begin_pos;
1.194 paf 1016: // append piece till #
1.206 paf 1017: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 1018: }
1019: // fall into COMMENT lexical state [wait for \n]
1.206 paf 1020: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 1021: lexical_brackets_nestage=1;
1022: continue;
1.48 paf 1023: case '$':
1.206 paf 1024: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 1025: RC;
1026: case '^':
1.206 paf 1027: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1028: RC;
1029: case '(':
1030: lexical_brackets_nestage++;
1031: RC;
1.67 paf 1032: case '-':
1.206 paf 1033: switch(*pc.source) {
1.127 paf 1034: case 'f': // -f
1.67 paf 1035: skip_analized=1;
1036: result=FEXISTS;
1.127 paf 1037: goto break2;
1038: case 'd': // -d
1039: skip_analized=1;
1040: result=DEXISTS;
1041: goto break2;
1.191 paf 1042: default: // minus
1.67 paf 1043: result=c;
1.127 paf 1044: goto break2;
1045: }
1.67 paf 1046: goto break2;
1.173 paf 1047: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 1048: case '~':
1.48 paf 1049: case ';':
1050: RC;
1.193 paf 1051: case '&': case '|':
1.206 paf 1052: if(*pc.source==c) { // && ||
1.193 paf 1053: result=c=='&'?LAND:LOR;
1.67 paf 1054: skip_analized=1;
1.58 paf 1055: } else
1056: result=c;
1057: goto break2;
1.193 paf 1058: case '!':
1.206 paf 1059: switch(pc.source[0]) {
1.193 paf 1060: case '|': // !| !||
1061: skip_analized=1;
1.206 paf 1062: if(pc.source[1]=='|') {
1.193 paf 1063: skip_analized++;
1064: result=LXOR;
1065: } else
1066: result=NXOR;
1067: goto break2;
1068: case '=': // !=
1069: skip_analized=1;
1070: result=NNE;
1071: goto break2;
1072: }
1073: RC;
1.195 paf 1074:
1075: case '<': // <<, <=, <
1.206 paf 1076: switch(*pc.source) {
1.195 paf 1077: case '<': // <[<]
1078: skip_analized=1; result=NSL; break;
1079: case '=': // <[=]
1080: skip_analized=1; result=NLE; break;
1081: default: // <[]
1082: result=c; break;
1083: }
1084: goto break2;
1085: case '>': // >>, >=, >
1.206 paf 1086: switch(*pc.source) {
1.195 paf 1087: case '>': // >[>]
1088: skip_analized=1; result=NSR; break;
1089: case '=': // >[=]
1090: skip_analized=1; result=NGE; break;
1091: default: // >[]
1092: result=c; break;
1093: }
1094: goto break2;
1095: case '=': // ==
1.206 paf 1096: switch(*pc.source) {
1.195 paf 1097: case '=': // =[=]
1098: skip_analized=1; result=NEQ; break;
1099: default: // =[]
1100: result=c; break; // not used now
1101: }
1.58 paf 1102: goto break2;
1.195 paf 1103:
1.48 paf 1104: case '"':
1.206 paf 1105: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1106: RC;
1107: case '\'':
1.206 paf 1108: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1109: RC;
1.50 paf 1110: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1111: if(end==begin) // right after whitespace
1.206 paf 1112: if(isspace(pc.source[1])) {
1113: switch(*pc.source) {
1.117 paf 1114: // case '?': // ok [and bad cases, yacc would bark at them]
1115: case 't': // lt gt [et nt]
1116: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1117: skip_analized=1;
1118: goto break2;
1119: case 'e': // le ge ne [ee]
1120: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1121: skip_analized=1;
1122: goto break2;
1123: case 'q': // eq [lq gq nq]
1124: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1125: skip_analized=1;
1126: goto break2;
1127: }
1.67 paf 1128: }
1129: break;
1130: case 'i':
1131: if(end==begin) // right after whitespace
1.206 paf 1132: if(isspace(pc.source[1])) {
1133: switch(pc.source[0]) {
1.117 paf 1134: case 'n': // in
1.95 paf 1135: skip_analized=1;
1136: result=IN;
1137: goto break2;
1.117 paf 1138: case 's': // is
1.95 paf 1139: skip_analized=1;
1140: result=IS;
1141: goto break2;
1142: }
1.67 paf 1143: }
1144: break;
1145: case 'd':
1146: if(end==begin) // right after whitespace
1.206 paf 1147: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.225 misha 1148: switch(pc.source[2]){
1149: case ' ': case '\t': case '\n': case '"': case '\'': case '^': case '$': // non-quoted string without whitespace after 'def' is not allowed
1150: skip_analized=2;
1151: result=DEF;
1152: goto break2;
1153: }
1154: // error: incorrect char after 'def'
1.50 paf 1155: }
1.48 paf 1156: break;
1.216 paf 1157: case 't':
1158: if(end==begin) // right after whitespace
1.225 misha 1159: if(pc.source[0]=='r' && pc.source[1]=='u' && pc.source[2]=='e') { // true
1.216 paf 1160: skip_analized=3;
1161: result=LITERAL_TRUE;
1162: goto break2;
1163: }
1164: break;
1165: case 'f':
1166: if(end==begin) // right after whitespace
1.225 misha 1167: if(pc.source[0]=='a' && pc.source[1]=='l' && pc.source[2]=='s' && pc.source[3]=='e') { // false
1.216 paf 1168: skip_analized=4;
1169: result=LITERAL_FALSE;
1170: goto break2;
1171: }
1172: break;
1.48 paf 1173: case ' ': case '\t': case '\n':
1.63 paf 1174: if(end!=begin) { // there were a string after previous operator?
1175: result=0; // return that string
1176: goto break2;
1.48 paf 1177: }
1.63 paf 1178: // that's a leading|traling space or after-operator-space
1179: // ignoring it
1180: // reset piece 'begin' position & line
1.206 paf 1181: begin=pc.source; // after whitespace char
1182: begin_pos=pc.pos;
1.48 paf 1183: continue;
1.1 paf 1184: }
1185: break;
1.194 paf 1186: case LS_EXPRESSION_COMMENT:
1187: if(c=='(')
1188: lexical_brackets_nestage++;
1189:
1.206 paf 1190: switch(*pc.source) {
1.194 paf 1191: case '\n': case ')':
1.206 paf 1192: if(*pc.source==')')
1.194 paf 1193: if(--lexical_brackets_nestage!=0)
1194: continue;
1195:
1196: // skip comment
1.206 paf 1197: begin=pc.source;
1198: begin_pos=pc.pos;
1.194 paf 1199:
1.206 paf 1200: pop_LS(pc);
1.194 paf 1201: continue;
1202: }
1203: break;
1.1 paf 1204:
1.10 paf 1205: // VARIABLE GET/PUT/WITH
1.166 parser 1206: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1207: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1208: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1209: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1210: if(
1.206 paf 1211: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1212: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1213: // name in expr ends also before
1.48 paf 1214: switch(c) {
1.181 paf 1215: // expression minus
1.92 paf 1216: case '-':
1.181 paf 1217: // expression integer division
1218: case '\\':
1.206 paf 1219: pop_LS(pc);
1220: pc.ungetc();
1.48 paf 1221: result=EON;
1222: goto break2;
1223: }
1224: }
1.166 parser 1225: if(
1.206 paf 1226: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1227: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1228: // name already has ':', stop before next
1229: switch(c) {
1230: case ':':
1.206 paf 1231: pop_LS(pc);
1232: pc.ungetc();
1.142 parser 1233: result=EON;
1234: goto break2;
1235: }
1236: }
1.48 paf 1237: switch(c) {
1238: case 0:
1239: case ' ': case '\t': case '\n':
1240: case ';':
1.126 paf 1241: case ']': case '}': case ')':
1242: case '"': case '\'':
1.139 parser 1243: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1244: case '+': case '*': case '/': case '%':
1245: case '&': case '|':
1246: case '=': case '!':
1.99 paf 1247: // common delimiters
1.190 paf 1248: case ',': case '?': case '#':
1.220 paf 1249: // mysql column separators
1250: case '`':
1.139 parser 1251: // before call
1252: case '^':
1.206 paf 1253: pop_LS(pc);
1254: pc.ungetc();
1.13 paf 1255: result=EON;
1.1 paf 1256: goto break2;
1.48 paf 1257: case '[':
1.162 parser 1258: // $name.<[>code]
1.206 paf 1259: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1260: end[-1]=='$'/*was start of get*/ ||
1261: end[-1]==':'/*was class name delim */ ||
1262: end[-1]=='.'/*was name delim */
1.162 parser 1263: )) {
1.206 paf 1264: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1265: lexical_brackets_nestage=1;
1266: RC;
1267: }
1.206 paf 1268: pc.ls=LS_VAR_SQUARE;
1.1 paf 1269: lexical_brackets_nestage=1;
1.48 paf 1270: RC;
1271: case '{':
1272: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1273: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1274: } else {
1.206 paf 1275: pc.ls=LS_VAR_CURLY;
1.48 paf 1276: lexical_brackets_nestage=1;
1277: }
1.69 paf 1278:
1.48 paf 1279: RC;
1280: case '(':
1.206 paf 1281: pc.ls=LS_VAR_ROUND;
1.1 paf 1282: lexical_brackets_nestage=1;
1.48 paf 1283: RC;
1284: case '.': // name part delim
1285: case '$': // name part subvar
1.160 parser 1286: case ':': // class<:>name
1.166 parser 1287: // go to _WITHOUT_COLON state variant...
1.206 paf 1288: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1289: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1290: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1291: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1292: // ...stop before next ':'
1.48 paf 1293: RC;
1.1 paf 1294: }
1295: break;
1.48 paf 1296:
1.1 paf 1297: case LS_VAR_NAME_CURLY:
1.48 paf 1298: switch(c) {
1.162 parser 1299: case '[':
1.166 parser 1300: // ${name.<[>code]}
1.206 paf 1301: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1302: lexical_brackets_nestage=1;
1303: RC;
1.48 paf 1304: case '}': // ${name} finished, restoring LS
1.206 paf 1305: pop_LS(pc);
1.48 paf 1306: RC;
1307: case '.': // name part delim
1308: case '$': // name part subvar
1309: case ':': // ':name' or 'class:name'
1310: RC;
1.1 paf 1311: }
1312: break;
1.48 paf 1313:
1314: case LS_VAR_SQUARE:
1315: switch(c) {
1316: case '$':
1.206 paf 1317: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1318: RC;
1319: case '^':
1.206 paf 1320: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1321: RC;
1322: case ']':
1.1 paf 1323: if(--lexical_brackets_nestage==0) {
1.206 paf 1324: pop_LS(pc);
1.48 paf 1325: RC;
1.1 paf 1326: }
1.48 paf 1327: break;
1328: case ';': // operator_or_fmt;value delim
1329: RC;
1330: case '[':
1331: lexical_brackets_nestage++;
1332: break;
1.1 paf 1333: }
1334: break;
1.48 paf 1335:
1.1 paf 1336: case LS_VAR_CURLY:
1.48 paf 1337: switch(c) {
1338: case '$':
1.206 paf 1339: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1340: RC;
1341: case '^':
1.206 paf 1342: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1343: RC;
1344: case '}':
1.1 paf 1345: if(--lexical_brackets_nestage==0) {
1.206 paf 1346: pop_LS(pc);
1.48 paf 1347: RC;
1.1 paf 1348: }
1.48 paf 1349: break;
1350: case '{':
1.1 paf 1351: lexical_brackets_nestage++;
1.48 paf 1352: break;
1353: }
1.1 paf 1354: break;
1355:
1.10 paf 1356: // METHOD CALL
1.1 paf 1357: case LS_METHOD_NAME:
1.48 paf 1358: switch(c) {
1359: case '[':
1.166 parser 1360: // ^name.<[>code].xxx
1.206 paf 1361: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1362: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1363: end[-1]==':'/*was class name delim */ ||
1364: end[-1]=='.'/*was name delim */
1.162 parser 1365: )) {
1.206 paf 1366: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1367: lexical_brackets_nestage=1;
1368: RC;
1369: }
1.206 paf 1370: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1371: lexical_brackets_nestage=1;
1.48 paf 1372: RC;
1373: case '{':
1.206 paf 1374: pc.ls=LS_METHOD_CURLY;
1.1 paf 1375: lexical_brackets_nestage=1;
1.48 paf 1376: RC;
1.69 paf 1377: case '(':
1.206 paf 1378: pc.ls=LS_METHOD_ROUND;
1.69 paf 1379: lexical_brackets_nestage=1;
1380: RC;
1.48 paf 1381: case '.': // name part delim
1382: case '$': // name part subvar
1383: case ':': // ':name' or 'class:name'
1.170 parser 1384: case '^': // ^abc^xxx wrong. bailing out
1385: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1386: case ' ': // ^if ( wrong. bailing out
1.48 paf 1387: RC;
1.1 paf 1388: }
1389: break;
1.48 paf 1390:
1391: case LS_METHOD_SQUARE:
1392: switch(c) {
1393: case '$':
1.206 paf 1394: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1395: RC;
1396: case '^':
1.206 paf 1397: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1398: RC;
1399: case ';': // param delim
1400: RC;
1401: case ']':
1.1 paf 1402: if(--lexical_brackets_nestage==0) {
1.206 paf 1403: pc.ls=LS_METHOD_AFTER;
1.48 paf 1404: RC;
1.1 paf 1405: }
1.48 paf 1406: break;
1407: case '[':
1.1 paf 1408: lexical_brackets_nestage++;
1.48 paf 1409: break;
1410: }
1.1 paf 1411: break;
1.48 paf 1412:
1.1 paf 1413: case LS_METHOD_CURLY:
1.48 paf 1414: switch(c) {
1415: case '$':
1.206 paf 1416: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1417: RC;
1418: case '^':
1.206 paf 1419: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1420: RC;
1421: case ';': // param delim
1.48 paf 1422: RC;
1423: case '}':
1.1 paf 1424: if(--lexical_brackets_nestage==0) {
1.206 paf 1425: pc.ls=LS_METHOD_AFTER;
1.48 paf 1426: RC;
1.1 paf 1427: }
1.48 paf 1428: break;
1429: case '{':
1.1 paf 1430: lexical_brackets_nestage++;
1.48 paf 1431: break;
1432: }
1.209 paf 1433: if(pc.explicit_result && c)
1434: switch(c) {
1435: case '\n': case ' ': case '\t':
1436: begin=pc.source;
1437: begin_pos=pc.pos;
1438: continue; // skip it
1439: default:
1440: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
1441: goto break2;
1442: }
1.1 paf 1443: break;
1.48 paf 1444:
1.1 paf 1445: case LS_METHOD_AFTER:
1.69 paf 1446: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1447: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1448: lexical_brackets_nestage=1;
1.48 paf 1449: RC;
1.1 paf 1450: }
1.69 paf 1451: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1452: pc.ls=LS_METHOD_CURLY;
1.69 paf 1453: lexical_brackets_nestage=1;
1454: RC;
1455: }
1456: if(c=='(') {/* ]( }( )( */
1.206 paf 1457: pc.ls=LS_METHOD_ROUND;
1.1 paf 1458: lexical_brackets_nestage=1;
1.48 paf 1459: RC;
1.1 paf 1460: }
1.206 paf 1461: pop_LS(pc);
1462: pc.ungetc();
1.13 paf 1463: result=EON;
1.1 paf 1464: goto break2;
1465: }
1.9 paf 1466: if(c==0) {
1.1 paf 1467: result=-1;
1468: break;
1469: }
1470: }
1471:
1472: break2:
1.59 paf 1473: if(end!=begin) { // there is last piece?
1474: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1475: // strip last \n
1.10 paf 1476: end--;
1.137 parser 1477: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1478: end--;
1.59 paf 1479: }
1.206 paf 1480: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1481: if(!pc.string_start)
1482: pc.string_start=begin_pos;
1.59 paf 1483: // append it
1.206 paf 1484: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1485: }
1.59 paf 1486: }
1.206 paf 1487: if(!pc.string.is_empty()) { // something accumulated?
1488: // create STRING value: array of OP_VALUE+origin+vstring
1489: *lvalp=VL(
1490: new VString(*new String(pc.string, String::L_CLEAN)),
1491: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1492: // new pieces storage
1.206 paf 1493: pc.string.clear();
1494: pc.string_start.clear();
1.58 paf 1495: // make current result be pending for next call, return STRING for now
1.206 paf 1496: pc.pending_state=result; result=STRING;
1.58 paf 1497: }
1.67 paf 1498: if(skip_analized) {
1.206 paf 1499: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1500: }
1.58 paf 1501: return result;
1.1 paf 1502: }
1503:
1.206 paf 1504: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1505: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1506: return 1;
1.110 paf 1507: }
1.1 paf 1508:
1.110 paf 1509: static void yyprint(FILE *file, int type, YYSTYPE value) {
1510: if(type==STRING)
1.206 paf 1511: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1512: }
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