Annotation of parser3/src/main/compile.y, revision 1.234
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:
1.234 ! misha 8: $Id: compile.y,v 1.233 2009-04-28 11:11:10 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: $$=$1; /* stack: resulting value */
1.233 misha 320: if(!replace_top_opcode(*$$, OP::OP_VALUE__GET_ELEMENT, OP::OP_VALUE__GET_ELEMENT__WRITE))
321: changetail_or_append(*$$,
322: OP::OP_GET_ELEMENT, false, /*->*/OP::OP_GET_ELEMENT__WRITE,
323: /*or */OP::OP_WRITE_VALUE
324: ); /* value=pop; wcontext.write(value) */
1.1 paf 325: };
1.163 parser 326: get_value: '$' get_name_value { $$=$2 };
1.64 paf 327: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 328: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 329: name_without_curly_rdive:
330: name_without_curly_rdive_read
331: | name_without_curly_rdive_class;
1.19 paf 332: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 333: $$=N();
334: ArrayOperation* diving_code=$1;
335: const String* first_name=LA2S(*diving_code);
1.179 paf 336: // self.xxx... -> xxx...
1.206 paf 337: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 338: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.229 misha 339: O(*yyval, OP::OP_WITH_SELF); /* stack: starting context */
1.206 paf 340: P(*yyval, *diving_code,
1.22 paf 341: /* skip over... */
1.229 misha 342: diving_code->count()>=4?4/*OP::OP_VALUE+origin+string+OP::OP_GET_ELEMENTx*/:3/*OP::OP_+origin+string*/);
1.22 paf 343: } else {
1.233 misha 344: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
345: if(diving_code->count()==4){ // optimisations for simple (but very popular) cases
346: O(*yyval,
347: (PC.in_call_value) // ^call
348: ? OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR // OP_VALUE+origin+string+OP_GET_ELEMENT -> OP_VALUE__GET_ELEMENT_OR_OPERATOR+origin+string
349: : OP::OP_VALUE__GET_ELEMENT // OP_VALUE+origin+string+OP_GET_ELEMENT -> OP_VALUE__GET_ELEMENT+origin+string
350: );
351: P(*$$, *diving_code, 1/*offset==1: skip leading OP_VALUE*/, 2/*limit==2: skip trailing OP_GET_ELEMENT*/);
352: } else {
353: O(*yyval, OP::OP_WITH_READ); /* stack: starting context */
354: P(*$$, *diving_code);
355: }
356: #else
1.229 misha 357: O(*yyval, OP::OP_WITH_READ); /* stack: starting context */
1.179 paf 358:
1.201 paf 359: // ^if ELEMENT -> ^if ELEMENT_OR_OPERATOR
1.206 paf 360: // OP_VALUE+origin+string+OP_GET_ELEMENT. -> OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
361: if(PC.in_call_value && diving_code->count()==4)
1.229 misha 362: diving_code->put(4-1, OP::OP_GET_ELEMENT_OR_OPERATOR);
1.206 paf 363: P(*$$, *diving_code);
1.233 misha 364: #endif
1.22 paf 365: }
366: /* diving code; stack: current context */
1.1 paf 367: };
1.206 paf 368: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2) };
369: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2) };
1.1 paf 370:
371: /* put */
372:
1.81 paf 373: put: '$' name_expr_wdive construct {
1.20 paf 374: $$=$2; /* stack: context,name */
1.206 paf 375: P(*$$, *$3); /* stack: context,name,constructor_value */
1.20 paf 376: };
1.44 paf 377: name_expr_wdive:
1.157 parser 378: name_expr_wdive_root
379: | name_expr_wdive_write
1.44 paf 380: | name_expr_wdive_class;
1.157 parser 381: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 382: $$=N();
383: ArrayOperation* diving_code=$1;
384: const String* first_name=LA2S(*diving_code);
1.179 paf 385: // $self.xxx... -> $xxx...
1.206 paf 386: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 387: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.229 misha 388: O(*$$, OP::OP_WITH_SELF); /* stack: starting context */
1.206 paf 389: P(*$$, *diving_code,
1.23 paf 390: /* skip over... */
1.229 misha 391: diving_code->count()>=4?4/*OP::OP_VALUE+origin+string+OP::OP_GET_ELEMENTx*/:3/*OP::OP_+origin+string*/);
1.23 paf 392: } else {
1.229 misha 393: O(*$$, OP::OP_WITH_ROOT); /* stack: starting context */
1.206 paf 394: P(*$$, *diving_code);
1.23 paf 395: }
396: /* diving code; stack: current context */
1.156 parser 397: };
1.157 parser 398: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 399: $$=N();
1.229 misha 400: O(*$$, OP::OP_WITH_WRITE); /* stack: starting context */
1.206 paf 401: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 402: };
1.206 paf 403: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2) };
1.20 paf 404:
1.149 parser 405: construct:
1.163 parser 406: construct_square
407: | construct_round
408: | construct_curly
1.149 parser 409: ;
1.211 paf 410: construct_square: '[' {
411: // allow $result_or_other_variable[ letters here any time ]
412: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
413: } any_constructor_code_value {
1.213 paf 414: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.211 paf 415: } ']' {
1.149 parser 416: // stack: context, name
1.211 paf 417: $$=$3; // stack: context, name, value
1.229 misha 418: O(*$$, OP::OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 419: }
420: ;
1.149 parser 421: construct_round: '(' expr_value ')' {
1.206 paf 422: $$=N();
1.229 misha 423: O(*$$, OP::OP_PREPARE_TO_EXPRESSION);
1.149 parser 424: // stack: context, name
1.206 paf 425: P(*$$, *$2); // stack: context, name, value
1.229 misha 426: O(*$$, OP::OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 427: }
1.52 paf 428: ;
1.149 parser 429: construct_curly: '{' maybe_codes '}' {
430: // stack: context, name
1.206 paf 431: $$=N();
1.229 misha 432: OA(*$$, OP::OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 433: };
434:
1.55 paf 435: any_constructor_code_value:
1.157 parser 436: void_value /* optimized $var[] case */
1.52 paf 437: | STRING /* optimized $var[STRING] case */
1.55 paf 438: | constructor_code_value /* $var[something complex] */
1.1 paf 439: ;
1.55 paf 440: constructor_code_value: constructor_code {
1.206 paf 441: $$=N();
1.229 misha 442: OA(*$$, OP::OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 443: /* some code that writes to that context */
444: /* context=pop; stack: context.value() */
1.1 paf 445: };
1.55 paf 446: constructor_code: codes__excluding_sole_str_literal;
1.206 paf 447: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 448:
1.1 paf 449: /* call */
450:
1.66 paf 451: call: call_value {
452: $$=$1; /* stack: value */
1.206 paf 453: changetail_or_append(*$$,
1.229 misha 454: OP::OP_CALL, true, /*->*/ OP::OP_CALL__WRITE,
455: /*or */OP::OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.66 paf 456: };
1.177 paf 457: call_value: '^' {
1.180 paf 458: PC.in_call_value=true;
1.177 paf 459: }
460: call_name {
1.180 paf 461: PC.in_call_value=false;
1.177 paf 462: }
1.154 parser 463: store_params EON { /* ^field.$method{vasya} */
464: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 465:
1.154 parser 466: YYSTYPE params_code=$5;
1.234 ! misha 467: if(params_code->count()==3) { // probably [] case. [OP::OP_VALUE+origin+Void]
1.206 paf 468: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.219 paf 469: if(value->is_void()) // value is VVoid?
1.123 paf 470: params_code=0; // ^zzz[] case. don't append lone empty param.
1.186 paf 471: }
472: /* stack: context, method_junction */
1.229 misha 473: OA(*$$, OP::OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
1.1 paf 474: };
475:
1.43 paf 476: call_name: name_without_curly_rdive;
1.38 paf 477:
1.206 paf 478: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2) };
1.69 paf 479: store_param:
480: store_square_param
481: | store_round_param
482: | store_curly_param
1.31 paf 483: ;
1.210 paf 484: store_square_param: '[' {
1.211 paf 485: // allow ^call[ letters here any time ]
1.210 paf 486: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
487: } store_code_param_parts {
1.213 paf 488: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.210 paf 489: } ']' {$$=$3};
1.69 paf 490: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 491: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 492: store_code_param_parts:
493: store_code_param_part
1.206 paf 494: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 495: ;
496: store_expr_param_parts:
497: store_expr_param_part
1.206 paf 498: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 499: ;
1.94 paf 500: store_curly_param_parts:
501: store_curly_param_part
1.206 paf 502: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3) }
1.94 paf 503: ;
1.120 paf 504: store_code_param_part: code_param_value {
1.32 paf 505: $$=$1;
1.120 paf 506: };
1.214 paf 507: store_expr_param_part: expr_value {
508: YYSTYPE expr_code=$1;
1.215 paf 509: if(expr_code->count()==3
1.234 ! misha 510: && (*expr_code)[0].code==OP::OP_VALUE) { // optimizing (double/bool/incidently 'string' too) case. [OP::OP_VALUE+origin+Double]. no evaluating
1.214 paf 511: $$=expr_code;
512: } else {
513: ArrayOperation* code=N();
1.229 misha 514: O(*code, OP::OP_PREPARE_TO_EXPRESSION);
1.214 paf 515: P(*code, *expr_code);
1.229 misha 516: O(*code, OP::OP_WRITE_EXPR_RESULT);
1.214 paf 517: $$=N();
1.229 misha 518: OA(*$$, OP::OP_EXPR_CODE__STORE_PARAM, code);
1.214 paf 519: }
1.69 paf 520: };
1.94 paf 521: store_curly_param_part: maybe_codes {
1.206 paf 522: $$=N();
1.229 misha 523: OA(*$$, OP::OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 524: };
1.120 paf 525: code_param_value:
1.157 parser 526: void_value /* optimized [;...] case */
1.120 paf 527: | STRING /* optimized [STRING] case */
528: | constructor_code_value /* [something complex] */
529: ;
1.1 paf 530:
531: /* name */
532:
1.206 paf 533: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 534:
1.206 paf 535: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 536: name_step: name_advance1 '.';
537: name_advance1: name_expr_value {
1.177 paf 538: // we know that name_advance1 not called from ^xxx context
539: // so we'll not check for operator call possibility as we do in name_advance2
540:
1.1 paf 541: /* stack: context */
542: $$=$1; /* stack: context,name */
1.229 misha 543: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 544: };
545: name_advance2: name_expr_value {
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: }
1.4 paf 550: | STRING BOGUS
1.1 paf 551: ;
552: name_expr_value:
1.4 paf 553: STRING /* subname_is_const */
1.1 paf 554: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 555: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 556: | name_square_code_value /* [codes] */
1.1 paf 557: ;
558: name_expr_subvar_value: '$' subvar_ref_name_rdive {
559: $$=$2;
1.229 misha 560: O(*$$, OP::OP_GET_ELEMENT);
1.1 paf 561: };
1.4 paf 562: name_expr_with_subvar_value: STRING subvar_get_writes {
1.206 paf 563: ArrayOperation* code;
1.183 paf 564: {
1.206 paf 565: change_string_literal_to_write_string_literal(*(code=$1));
566: P(*code, *$2);
1.183 paf 567: }
1.206 paf 568: $$=N();
1.229 misha 569: OA(*$$, OP::OP_STRING_POOL, code);
1.1 paf 570: };
1.212 paf 571: name_square_code_value: '[' {
572: // allow $result_or_other_variable[ letters here any time ]
573: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
574: } codes {
1.213 paf 575: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.212 paf 576: } ']' {
1.206 paf 577: $$=N();
1.229 misha 578: OA(*$$, OP::OP_OBJECT_POOL, $3); /* stack: empty write context */
1.183 paf 579: /* some code that writes to that context */
580: /* context=pop; stack: context.value() */
1.160 parser 581: };
1.154 parser 582: subvar_ref_name_rdive: STRING {
1.206 paf 583: $$=N();
1.229 misha 584: O(*$$, OP::OP_WITH_READ);
1.206 paf 585: P(*$$, *$1);
1.1 paf 586: };
1.206 paf 587: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 588: subvar__get_write: '$' subvar_ref_name_rdive {
589: $$=$2;
1.229 misha 590: O(*$$, OP::OP_GET_ELEMENT__WRITE);
1.42 paf 591: };
592:
1.154 parser 593: class_prefix:
594: class_static_prefix
595: | class_constructor_prefix
596: ;
1.155 parser 597: class_static_prefix: STRING ':' {
598: $$=$1; // stack: class name string
1.206 paf 599: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
600: if(VStateless_class* base=PC.cclass->base_class()) {
601: change_string_literal_value(*$$, base->name());
1.189 paf 602: } else {
603: strcpy(PC.error, "no base class declared");
604: YYERROR;
605: }
606: }
1.233 misha 607: #ifdef OPTIMIZE_BYTECODE_GET_CLASS
608: // OP_VALUE+origin+string+OP_GET_CLASS -> OP_VALUE__GET_CLASS+origin+string
609: replace_top_opcode(*$$, OP::OP_VALUE, OP::OP_VALUE__GET_CLASS, true/*assert if top opcode != OP_VALUE*/)
610: #else
1.229 misha 611: O(*$$, OP::OP_GET_CLASS);
1.233 misha 612: #endif
1.155 parser 613: };
614: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 615: $$=$1;
1.180 paf 616: if(!PC.in_call_value) {
1.154 parser 617: strcpy(PC.error, ":: not allowed here");
618: YYERROR;
619: }
1.229 misha 620: O(*$$, OP::OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 621: };
622:
1.53 paf 623:
1.56 paf 624: /* expr */
1.53 paf 625:
1.214 paf 626: expr_value: expr;
1.56 paf 627: expr:
1.214 paf 628: double_or_STRING
1.216 paf 629: | true_value
630: | false_value
1.64 paf 631: | get_value
1.66 paf 632: | call_value
1.216 paf 633: | '"' string_inside_quotes_value '"' { $$ = $2 }
634: | '\'' string_inside_quotes_value '\'' { $$ = $2 }
1.60 paf 635: | '(' expr ')' { $$ = $2; }
636: /* stack: operand // stack: @operand */
1.229 misha 637: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP::OP_NEG) }
1.202 paf 638: | '+' expr %prec NUNARY { $$=$2 }
1.229 misha 639: | '~' expr { $$=$2; O(*$$, OP::OP_INV) }
640: | '!' expr { $$=$2; O(*$$, OP::OP_NOT) }
641: | "def" expr { $$=$2; O(*$$, OP::OP_DEF) }
642: | "in" expr { $$=$2; O(*$$, OP::OP_IN) }
643: | "-f" expr { $$=$2; O(*$$, OP::OP_FEXISTS) }
644: | "-d" expr { $$=$2; O(*$$, OP::OP_DEXISTS) }
1.60 paf 645: /* stack: a,b // stack: a@b */
1.229 misha 646: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_SUB) }
647: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_ADD) }
648: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MUL) }
649: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_DIV) }
650: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MOD) }
651: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_INTDIV) }
652: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SL) }
653: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SR) }
654: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_AND) }
655: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_OR) }
656: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_XOR) }
657: | expr "&&" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_AND) }
658: | expr "||" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_OR) }
659: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_LOG_XOR) }
660: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LT) }
661: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GT) }
662: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LE) }
663: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GE) }
664: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_EQ) }
665: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_NE) }
666: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LT) }
667: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GT) }
668: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LE) }
669: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GE) }
670: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_EQ) }
671: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_NE) }
672: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_IS) }
1.56 paf 673: ;
1.214 paf 674:
675: double_or_STRING: STRING {
676: // optimized from OP_STRING->OP_VALUE for doubles
677: maybe_change_string_literal_to_double_literal(*($$=$1));
678: };
1.55 paf 679:
1.65 paf 680: string_inside_quotes_value: maybe_codes {
1.206 paf 681: $$=N();
1.229 misha 682: OA(*$$, OP::OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 683: /* some code that writes to that context */
684: /* context=pop; stack: context.get_string() */
1.53 paf 685: };
1.1 paf 686:
1.27 paf 687: /* basics */
1.1 paf 688:
1.81 paf 689: write_string: STRING {
1.209 paf 690: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
691: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 692: };
693:
1.216 paf 694: void_value: /* empty */ { $$=VL(/*we know that we will not change it*/const_cast<VVoid*>(&vvoid), 0, 0, 0) }
695: true_value: "true" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vtrue), 0, 0, 0) }
696: false_value: "false" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vfalse), 0, 0, 0) }
697:
1.206 paf 698: empty: /* empty */ { $$=N() };
1.1 paf 699:
700: %%
1.105 paf 701: #endif
1.1 paf 702:
703: /*
704: 000$111(2222)00
705: 000$111{3333}00
1.9 paf 706: $,^: push,=0
1.1 paf 707: 1:( { break=pop
708: 2:( ) pop
709: 3:{ } pop
710:
711: 000^111(2222)4444{33333}4000
1.9 paf 712: $,^: push,=0
1.1 paf 713: 1:( { break=pop
714: 2:( )=4
715: 3:{ }=4
716: 4:[^({]=pop
717: */
718:
1.206 paf 719: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
720: pc.source--;
721: if(pc.pos.col==0) {
722: --pc.pos.line; pc.pos.col=last_line_end_col;
723: } else
724: --pc.pos.col;
725:
726: }
727: static int yylex(YYSTYPE *lvalp, void *apc) {
728: register Parse_control& pc=*static_cast<Parse_control*>(apc);
729:
730: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 731: #define RC {result=c; goto break2; }
1.1 paf 732:
1.206 paf 733: register int c;
734: int result;
1.1 paf 735:
1.206 paf 736: if(pc.pending_state) {
737: result=pc.pending_state;
738: pc.pending_state=0;
1.1 paf 739: return result;
740: }
741:
1.206 paf 742: const char *begin=pc.source;
743: Pos begin_pos=pc.pos;
1.91 paf 744: const char *end;
1.67 paf 745: int skip_analized=0;
1.50 paf 746: while(true) {
1.206 paf 747: c=*(end=(pc.source++));
748: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 749:
1.208 paf 750: if(c=='\n')
1.206 paf 751: pc.pos_next_line();
1.208 paf 752: else
1.206 paf 753: pc.pos_next_c(c);
1.208 paf 754: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 755:
1.208 paf 756: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 757: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 758: // @SPECIAL
759: // ...
760: // @<here =
1.206 paf 761: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 762: } // continuing checks
1.206 paf 763: if(pc.ls==LS_USER) {
764: push_LS(pc, LS_DEF_NAME);
1.171 parser 765: RC;
1.175 paf 766: } else // @ in first column inside some code [when could that be?]
1.171 parser 767: result=BAD_METHOD_DECL_START;
768: goto break2;
1.209 paf 769: }
770: if(c=='^') {
1.206 paf 771: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 772: // handle after-method situation
1.206 paf 773: pop_LS(pc);
1.203 paf 774: result=EON;
775: skip_analized=-1; // return to punctuation afterwards to assure it's literality
776: goto break2;
777: }
1.206 paf 778: switch(pc.ls) {
1.169 parser 779: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
780: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
781: case LS_VAR_NAME_SIMPLE_WITH_COLON:
782: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
783: case LS_VAR_NAME_CURLY:
784: case LS_METHOD_NAME:
1.194 paf 785: case LS_USER_COMMENT:
1.169 parser 786: case LS_DEF_COMMENT:
787: // no literals in names, please
788: break;
789: default:
1.206 paf 790: switch(*pc.source) {
1.165 parser 791: // ^escaping some punctuators
1.228 misha 792: case '^': case '$': case ';': case '@':
1.126 paf 793: case '(': case ')':
1.48 paf 794: case '[': case ']':
795: case '{': case '}':
1.172 parser 796: case '"': case ':':
1.40 paf 797: if(end!=begin) {
1.206 paf 798: if(!pc.string_start)
799: pc.string_start=begin_pos;
1.40 paf 800: // append piece till ^
1.206 paf 801: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 802: }
1.63 paf 803: // reset piece 'begin' position & line
1.206 paf 804: begin=pc.source; // ->punctuation
805: begin_pos=pc.pos;
1.203 paf 806: // skip over _ after ^
1.206 paf 807: pc.source++; pc.pos.col++;
1.203 paf 808: // skip analysis = forced literal
809: continue;
1.114 paf 810:
811: // converting ^#HH into char(hex(HH))
812: case '#':
813: if(end!=begin) {
1.206 paf 814: if(!pc.string_start)
815: pc.string_start=begin_pos;
1.114 paf 816: // append piece till ^
1.206 paf 817: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 818: }
819: // #HH ?
1.228 misha 820: if(pc.source[1] && isxdigit(pc.source[1]) && pc.source[2] && isxdigit(pc.source[2])) {
1.218 paf 821: char c=(char)(
1.206 paf 822: hex_value[(unsigned char)pc.source[1]]*0x10+
1.218 paf 823: hex_value[(unsigned char)pc.source[2]]);
1.206 paf 824: if(c==0) {
1.114 paf 825: result=BAD_HEX_LITERAL;
826: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
827: }
828: // append char(hex(HH))
1.206 paf 829: pc.string.append(c);
1.114 paf 830: // skip over ^#HH
1.206 paf 831: pc.source+=3;
832: pc.pos.col+=3;
1.114 paf 833: // reset piece 'begin' position & line
1.206 paf 834: begin=pc.source; // ->after ^#HH
835: begin_pos=pc.pos;
1.203 paf 836: // skip analysis = forced literal
1.114 paf 837: continue;
838: }
1.228 misha 839: // just escaped char
840: // reset piece 'begin' position & line
841: begin=pc.source;
842: begin_pos=pc.pos;
843: // skip over _ after ^
844: pc.source++; pc.pos.col++;
845: // skip analysis = forced literal
846: continue;
1.1 paf 847: }
1.169 parser 848: break;
1.203 paf 849: }
1.169 parser 850: }
1.113 paf 851: // #comment start skipping
1.206 paf 852: if(c=='#' && pc.pos.col==1) {
1.112 paf 853: if(end!=begin) {
1.206 paf 854: if(!pc.string_start)
855: pc.string_start=begin_pos;
1.112 paf 856: // append piece till #
1.206 paf 857: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 858: }
859: // fall into COMMENT lexical state [wait for \n]
1.206 paf 860: push_LS(pc, LS_USER_COMMENT);
1.175 paf 861: continue;
1.112 paf 862: }
1.206 paf 863: switch(pc.ls) {
1.10 paf 864:
865: // USER'S = NOT OURS
1.1 paf 866: case LS_USER:
1.206 paf 867: case LS_NAME_SQUARE_PART: // name.[here].xxx
868: if(pc.trim_bof)
1.153 parser 869: switch(c) {
870: case '\n': case ' ': case '\t':
1.206 paf 871: begin=pc.source;
872: begin_pos=pc.pos;
1.152 parser 873: continue; // skip it
1.153 parser 874: default:
1.206 paf 875: pc.trim_bof=false;
1.152 parser 876: }
1.48 paf 877: switch(c) {
878: case '$':
1.206 paf 879: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 880: RC;
881: case '^':
1.206 paf 882: push_LS(pc, LS_METHOD_NAME);
1.48 paf 883: RC;
1.166 parser 884: case ']':
1.206 paf 885: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 886: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 887: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 888: RC;
889: }
1.160 parser 890: break;
1.166 parser 891: case '[': // $name.[co<[>de]
1.206 paf 892: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 893: lexical_brackets_nestage++;
1.161 parser 894: break;
1.112 paf 895: }
1.209 paf 896: if(pc.explicit_result && c)
897: switch(c) {
898: case '\n': case ' ': case '\t':
899: begin=pc.source;
900: begin_pos=pc.pos;
901: continue; // skip it
902: default:
903: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
904: goto break2;
905: }
1.112 paf 906: break;
907:
908: // #COMMENT
1.194 paf 909: case LS_USER_COMMENT:
1.112 paf 910: if(c=='\n') {
911: // skip comment
1.206 paf 912: begin=pc.source;
913: begin_pos=pc.pos;
1.112 paf 914:
1.206 paf 915: pop_LS(pc);
1.112 paf 916: continue;
1.1 paf 917: }
1.48 paf 918: break;
919:
920: // STRING IN EXPRESSION
1.145 parser 921: case LS_EXPRESSION_STRING_QUOTED:
922: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 923: switch(c) {
924: case '"':
1.145 parser 925: case '\'':
926: if(
1.206 paf 927: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
928: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
929: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 930: RC;
931: }
932: break;
1.48 paf 933: case '$':
1.206 paf 934: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 935: RC;
936: case '^':
1.206 paf 937: push_LS(pc, LS_METHOD_NAME);
1.48 paf 938: RC;
1.10 paf 939: }
940: break;
941:
942: // METHOD DEFINITION
943: case LS_DEF_NAME:
1.48 paf 944: switch(c) {
945: case '[':
1.206 paf 946: pc.ls=LS_DEF_PARAMS;
1.48 paf 947: RC;
948: case '\n':
1.206 paf 949: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 950: RC;
1.10 paf 951: }
952: break;
1.48 paf 953:
1.10 paf 954: case LS_DEF_PARAMS:
1.48 paf 955: switch(c) {
1.192 paf 956: case '$': // common error
1.193 paf 957: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
958: goto break2;
1.48 paf 959: case ';':
960: RC;
961: case ']':
1.206 paf 962: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 963: RC;
1.49 paf 964: case '\n': // wrong. bailing out
1.206 paf 965: pop_LS(pc);
1.48 paf 966: RC;
1.10 paf 967: }
968: break;
1.48 paf 969:
1.10 paf 970: case LS_DEF_LOCALS:
1.48 paf 971: switch(c) {
972: case '[':
973: case ';':
974: RC;
975: case ']':
1.206 paf 976: pc.ls=LS_DEF_COMMENT;
1.48 paf 977: RC;
978: case '\n': // wrong. bailing out
1.206 paf 979: pop_LS(pc);
1.48 paf 980: RC;
1.10 paf 981: }
982: break;
1.48 paf 983:
1.10 paf 984: case LS_DEF_COMMENT:
985: if(c=='\n') {
1.206 paf 986: pop_LS(pc);
1.48 paf 987: RC;
1.37 paf 988: }
989: break;
990:
1.48 paf 991: case LS_DEF_SPECIAL_BODY:
1.175 paf 992: if(c=='\n')
1.48 paf 993: RC;
994: break;
995:
996: // (EXPRESSION)
1.69 paf 997: case LS_VAR_ROUND:
998: case LS_METHOD_ROUND:
1.48 paf 999: switch(c) {
1000: case ')':
1001: if(--lexical_brackets_nestage==0)
1.206 paf 1002: if(pc.ls==LS_METHOD_ROUND) // method round param ended
1003: pc.ls=LS_METHOD_AFTER; // look for method end
1004: else // pc.ls==LS_VAR_ROUND // variable constructor ended
1005: pop_LS(pc); // return to normal life
1.48 paf 1006: RC;
1.194 paf 1007: case '#': // comment start skipping
1008: if(end!=begin) {
1.206 paf 1009: if(!pc.string_start)
1010: pc.string_start=begin_pos;
1.194 paf 1011: // append piece till #
1.206 paf 1012: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 1013: }
1014: // fall into COMMENT lexical state [wait for \n]
1.206 paf 1015: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 1016: lexical_brackets_nestage=1;
1017: continue;
1.48 paf 1018: case '$':
1.206 paf 1019: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 1020: RC;
1021: case '^':
1.206 paf 1022: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1023: RC;
1024: case '(':
1025: lexical_brackets_nestage++;
1026: RC;
1.67 paf 1027: case '-':
1.206 paf 1028: switch(*pc.source) {
1.127 paf 1029: case 'f': // -f
1.67 paf 1030: skip_analized=1;
1031: result=FEXISTS;
1.127 paf 1032: goto break2;
1033: case 'd': // -d
1034: skip_analized=1;
1035: result=DEXISTS;
1036: goto break2;
1.191 paf 1037: default: // minus
1.67 paf 1038: result=c;
1.127 paf 1039: goto break2;
1040: }
1.67 paf 1041: goto break2;
1.173 paf 1042: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 1043: case '~':
1.48 paf 1044: case ';':
1045: RC;
1.193 paf 1046: case '&': case '|':
1.206 paf 1047: if(*pc.source==c) { // && ||
1.193 paf 1048: result=c=='&'?LAND:LOR;
1.67 paf 1049: skip_analized=1;
1.58 paf 1050: } else
1051: result=c;
1052: goto break2;
1.193 paf 1053: case '!':
1.206 paf 1054: switch(pc.source[0]) {
1.193 paf 1055: case '|': // !| !||
1056: skip_analized=1;
1.206 paf 1057: if(pc.source[1]=='|') {
1.193 paf 1058: skip_analized++;
1059: result=LXOR;
1060: } else
1061: result=NXOR;
1062: goto break2;
1063: case '=': // !=
1064: skip_analized=1;
1065: result=NNE;
1066: goto break2;
1067: }
1068: RC;
1.195 paf 1069:
1070: case '<': // <<, <=, <
1.206 paf 1071: switch(*pc.source) {
1.195 paf 1072: case '<': // <[<]
1073: skip_analized=1; result=NSL; break;
1074: case '=': // <[=]
1075: skip_analized=1; result=NLE; break;
1076: default: // <[]
1077: result=c; break;
1078: }
1079: goto break2;
1080: case '>': // >>, >=, >
1.206 paf 1081: switch(*pc.source) {
1.195 paf 1082: case '>': // >[>]
1083: skip_analized=1; result=NSR; break;
1084: case '=': // >[=]
1085: skip_analized=1; result=NGE; break;
1086: default: // >[]
1087: result=c; break;
1088: }
1089: goto break2;
1090: case '=': // ==
1.206 paf 1091: switch(*pc.source) {
1.195 paf 1092: case '=': // =[=]
1093: skip_analized=1; result=NEQ; break;
1094: default: // =[]
1095: result=c; break; // not used now
1096: }
1.58 paf 1097: goto break2;
1.195 paf 1098:
1.48 paf 1099: case '"':
1.206 paf 1100: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1101: RC;
1102: case '\'':
1.206 paf 1103: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1104: RC;
1.50 paf 1105: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1106: if(end==begin) // right after whitespace
1.206 paf 1107: if(isspace(pc.source[1])) {
1108: switch(*pc.source) {
1.117 paf 1109: // case '?': // ok [and bad cases, yacc would bark at them]
1110: case 't': // lt gt [et nt]
1111: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1112: skip_analized=1;
1113: goto break2;
1114: case 'e': // le ge ne [ee]
1115: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1116: skip_analized=1;
1117: goto break2;
1118: case 'q': // eq [lq gq nq]
1119: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1120: skip_analized=1;
1121: goto break2;
1122: }
1.67 paf 1123: }
1124: break;
1125: case 'i':
1126: if(end==begin) // right after whitespace
1.206 paf 1127: if(isspace(pc.source[1])) {
1128: switch(pc.source[0]) {
1.117 paf 1129: case 'n': // in
1.95 paf 1130: skip_analized=1;
1131: result=IN;
1132: goto break2;
1.117 paf 1133: case 's': // is
1.95 paf 1134: skip_analized=1;
1135: result=IS;
1136: goto break2;
1137: }
1.67 paf 1138: }
1139: break;
1140: case 'd':
1141: if(end==begin) // right after whitespace
1.206 paf 1142: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.225 misha 1143: switch(pc.source[2]){
1144: case ' ': case '\t': case '\n': case '"': case '\'': case '^': case '$': // non-quoted string without whitespace after 'def' is not allowed
1145: skip_analized=2;
1146: result=DEF;
1147: goto break2;
1148: }
1149: // error: incorrect char after 'def'
1.50 paf 1150: }
1.48 paf 1151: break;
1.216 paf 1152: case 't':
1153: if(end==begin) // right after whitespace
1.225 misha 1154: if(pc.source[0]=='r' && pc.source[1]=='u' && pc.source[2]=='e') { // true
1.216 paf 1155: skip_analized=3;
1156: result=LITERAL_TRUE;
1157: goto break2;
1158: }
1159: break;
1160: case 'f':
1161: if(end==begin) // right after whitespace
1.225 misha 1162: if(pc.source[0]=='a' && pc.source[1]=='l' && pc.source[2]=='s' && pc.source[3]=='e') { // false
1.216 paf 1163: skip_analized=4;
1164: result=LITERAL_FALSE;
1165: goto break2;
1166: }
1167: break;
1.48 paf 1168: case ' ': case '\t': case '\n':
1.63 paf 1169: if(end!=begin) { // there were a string after previous operator?
1170: result=0; // return that string
1171: goto break2;
1.48 paf 1172: }
1.63 paf 1173: // that's a leading|traling space or after-operator-space
1174: // ignoring it
1175: // reset piece 'begin' position & line
1.206 paf 1176: begin=pc.source; // after whitespace char
1177: begin_pos=pc.pos;
1.48 paf 1178: continue;
1.1 paf 1179: }
1180: break;
1.194 paf 1181: case LS_EXPRESSION_COMMENT:
1182: if(c=='(')
1183: lexical_brackets_nestage++;
1184:
1.206 paf 1185: switch(*pc.source) {
1.194 paf 1186: case '\n': case ')':
1.206 paf 1187: if(*pc.source==')')
1.194 paf 1188: if(--lexical_brackets_nestage!=0)
1189: continue;
1190:
1191: // skip comment
1.206 paf 1192: begin=pc.source;
1193: begin_pos=pc.pos;
1.194 paf 1194:
1.206 paf 1195: pop_LS(pc);
1.194 paf 1196: continue;
1197: }
1198: break;
1.1 paf 1199:
1.10 paf 1200: // VARIABLE GET/PUT/WITH
1.166 parser 1201: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1202: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1203: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1204: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1205: if(
1.206 paf 1206: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1207: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1208: // name in expr ends also before
1.48 paf 1209: switch(c) {
1.181 paf 1210: // expression minus
1.92 paf 1211: case '-':
1.181 paf 1212: // expression integer division
1213: case '\\':
1.206 paf 1214: pop_LS(pc);
1215: pc.ungetc();
1.48 paf 1216: result=EON;
1217: goto break2;
1218: }
1219: }
1.166 parser 1220: if(
1.206 paf 1221: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1222: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1223: // name already has ':', stop before next
1224: switch(c) {
1225: case ':':
1.206 paf 1226: pop_LS(pc);
1227: pc.ungetc();
1.142 parser 1228: result=EON;
1229: goto break2;
1230: }
1231: }
1.48 paf 1232: switch(c) {
1233: case 0:
1234: case ' ': case '\t': case '\n':
1235: case ';':
1.126 paf 1236: case ']': case '}': case ')':
1237: case '"': case '\'':
1.139 parser 1238: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1239: case '+': case '*': case '/': case '%':
1240: case '&': case '|':
1241: case '=': case '!':
1.99 paf 1242: // common delimiters
1.190 paf 1243: case ',': case '?': case '#':
1.220 paf 1244: // mysql column separators
1245: case '`':
1.139 parser 1246: // before call
1247: case '^':
1.206 paf 1248: pop_LS(pc);
1249: pc.ungetc();
1.13 paf 1250: result=EON;
1.1 paf 1251: goto break2;
1.48 paf 1252: case '[':
1.162 parser 1253: // $name.<[>code]
1.206 paf 1254: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1255: end[-1]=='$'/*was start of get*/ ||
1256: end[-1]==':'/*was class name delim */ ||
1257: end[-1]=='.'/*was name delim */
1.162 parser 1258: )) {
1.206 paf 1259: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1260: lexical_brackets_nestage=1;
1261: RC;
1262: }
1.206 paf 1263: pc.ls=LS_VAR_SQUARE;
1.1 paf 1264: lexical_brackets_nestage=1;
1.48 paf 1265: RC;
1266: case '{':
1267: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1268: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1269: } else {
1.206 paf 1270: pc.ls=LS_VAR_CURLY;
1.48 paf 1271: lexical_brackets_nestage=1;
1272: }
1.69 paf 1273:
1.48 paf 1274: RC;
1275: case '(':
1.206 paf 1276: pc.ls=LS_VAR_ROUND;
1.1 paf 1277: lexical_brackets_nestage=1;
1.48 paf 1278: RC;
1279: case '.': // name part delim
1280: case '$': // name part subvar
1.160 parser 1281: case ':': // class<:>name
1.166 parser 1282: // go to _WITHOUT_COLON state variant...
1.206 paf 1283: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1284: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1285: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1286: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1287: // ...stop before next ':'
1.48 paf 1288: RC;
1.1 paf 1289: }
1290: break;
1.48 paf 1291:
1.1 paf 1292: case LS_VAR_NAME_CURLY:
1.48 paf 1293: switch(c) {
1.162 parser 1294: case '[':
1.166 parser 1295: // ${name.<[>code]}
1.206 paf 1296: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1297: lexical_brackets_nestage=1;
1298: RC;
1.48 paf 1299: case '}': // ${name} finished, restoring LS
1.206 paf 1300: pop_LS(pc);
1.48 paf 1301: RC;
1302: case '.': // name part delim
1303: case '$': // name part subvar
1304: case ':': // ':name' or 'class:name'
1305: RC;
1.1 paf 1306: }
1307: break;
1.48 paf 1308:
1309: case LS_VAR_SQUARE:
1310: switch(c) {
1311: case '$':
1.206 paf 1312: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1313: RC;
1314: case '^':
1.206 paf 1315: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1316: RC;
1317: case ']':
1.1 paf 1318: if(--lexical_brackets_nestage==0) {
1.206 paf 1319: pop_LS(pc);
1.48 paf 1320: RC;
1.1 paf 1321: }
1.48 paf 1322: break;
1323: case ';': // operator_or_fmt;value delim
1324: RC;
1325: case '[':
1326: lexical_brackets_nestage++;
1327: break;
1.1 paf 1328: }
1329: break;
1.48 paf 1330:
1.1 paf 1331: case LS_VAR_CURLY:
1.48 paf 1332: switch(c) {
1333: case '$':
1.206 paf 1334: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1335: RC;
1336: case '^':
1.206 paf 1337: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1338: RC;
1339: case '}':
1.1 paf 1340: if(--lexical_brackets_nestage==0) {
1.206 paf 1341: pop_LS(pc);
1.48 paf 1342: RC;
1.1 paf 1343: }
1.48 paf 1344: break;
1345: case '{':
1.1 paf 1346: lexical_brackets_nestage++;
1.48 paf 1347: break;
1348: }
1.1 paf 1349: break;
1350:
1.10 paf 1351: // METHOD CALL
1.1 paf 1352: case LS_METHOD_NAME:
1.48 paf 1353: switch(c) {
1354: case '[':
1.166 parser 1355: // ^name.<[>code].xxx
1.206 paf 1356: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1357: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1358: end[-1]==':'/*was class name delim */ ||
1359: end[-1]=='.'/*was name delim */
1.162 parser 1360: )) {
1.206 paf 1361: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1362: lexical_brackets_nestage=1;
1363: RC;
1364: }
1.206 paf 1365: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1366: lexical_brackets_nestage=1;
1.48 paf 1367: RC;
1368: case '{':
1.206 paf 1369: pc.ls=LS_METHOD_CURLY;
1.1 paf 1370: lexical_brackets_nestage=1;
1.48 paf 1371: RC;
1.69 paf 1372: case '(':
1.206 paf 1373: pc.ls=LS_METHOD_ROUND;
1.69 paf 1374: lexical_brackets_nestage=1;
1375: RC;
1.48 paf 1376: case '.': // name part delim
1377: case '$': // name part subvar
1378: case ':': // ':name' or 'class:name'
1.170 parser 1379: case '^': // ^abc^xxx wrong. bailing out
1380: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1381: case ' ': // ^if ( wrong. bailing out
1.48 paf 1382: RC;
1.1 paf 1383: }
1384: break;
1.48 paf 1385:
1386: case LS_METHOD_SQUARE:
1387: switch(c) {
1388: case '$':
1.206 paf 1389: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1390: RC;
1391: case '^':
1.206 paf 1392: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1393: RC;
1394: case ';': // param delim
1395: RC;
1396: case ']':
1.1 paf 1397: if(--lexical_brackets_nestage==0) {
1.206 paf 1398: pc.ls=LS_METHOD_AFTER;
1.48 paf 1399: RC;
1.1 paf 1400: }
1.48 paf 1401: break;
1402: case '[':
1.1 paf 1403: lexical_brackets_nestage++;
1.48 paf 1404: break;
1405: }
1.1 paf 1406: break;
1.48 paf 1407:
1.1 paf 1408: case LS_METHOD_CURLY:
1.48 paf 1409: switch(c) {
1410: case '$':
1.206 paf 1411: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1412: RC;
1413: case '^':
1.206 paf 1414: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1415: RC;
1416: case ';': // param delim
1.48 paf 1417: RC;
1418: case '}':
1.1 paf 1419: if(--lexical_brackets_nestage==0) {
1.206 paf 1420: pc.ls=LS_METHOD_AFTER;
1.48 paf 1421: RC;
1.1 paf 1422: }
1.48 paf 1423: break;
1424: case '{':
1.1 paf 1425: lexical_brackets_nestage++;
1.48 paf 1426: break;
1427: }
1.209 paf 1428: if(pc.explicit_result && c)
1429: switch(c) {
1430: case '\n': case ' ': case '\t':
1431: begin=pc.source;
1432: begin_pos=pc.pos;
1433: continue; // skip it
1434: default:
1435: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
1436: goto break2;
1437: }
1.1 paf 1438: break;
1.48 paf 1439:
1.1 paf 1440: case LS_METHOD_AFTER:
1.69 paf 1441: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1442: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1443: lexical_brackets_nestage=1;
1.48 paf 1444: RC;
1.1 paf 1445: }
1.69 paf 1446: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1447: pc.ls=LS_METHOD_CURLY;
1.69 paf 1448: lexical_brackets_nestage=1;
1449: RC;
1450: }
1451: if(c=='(') {/* ]( }( )( */
1.206 paf 1452: pc.ls=LS_METHOD_ROUND;
1.1 paf 1453: lexical_brackets_nestage=1;
1.48 paf 1454: RC;
1.1 paf 1455: }
1.206 paf 1456: pop_LS(pc);
1457: pc.ungetc();
1.13 paf 1458: result=EON;
1.1 paf 1459: goto break2;
1460: }
1.9 paf 1461: if(c==0) {
1.1 paf 1462: result=-1;
1463: break;
1464: }
1465: }
1466:
1467: break2:
1.59 paf 1468: if(end!=begin) { // there is last piece?
1469: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1470: // strip last \n
1.10 paf 1471: end--;
1.137 parser 1472: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1473: end--;
1.59 paf 1474: }
1.206 paf 1475: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1476: if(!pc.string_start)
1477: pc.string_start=begin_pos;
1.59 paf 1478: // append it
1.206 paf 1479: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1480: }
1.59 paf 1481: }
1.206 paf 1482: if(!pc.string.is_empty()) { // something accumulated?
1483: // create STRING value: array of OP_VALUE+origin+vstring
1484: *lvalp=VL(
1485: new VString(*new String(pc.string, String::L_CLEAN)),
1486: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1487: // new pieces storage
1.206 paf 1488: pc.string.clear();
1489: pc.string_start.clear();
1.58 paf 1490: // make current result be pending for next call, return STRING for now
1.206 paf 1491: pc.pending_state=result; result=STRING;
1.58 paf 1492: }
1.67 paf 1493: if(skip_analized) {
1.206 paf 1494: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1495: }
1.58 paf 1496: return result;
1.1 paf 1497: }
1498:
1.206 paf 1499: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1500: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1501: return 1;
1.110 paf 1502: }
1.1 paf 1503:
1.110 paf 1504: static void yyprint(FILE *file, int type, YYSTYPE value) {
1505: if(type==STRING)
1.206 paf 1506: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1507: }
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