Annotation of parser3/src/main/compile.y, revision 1.263
1.168 parser 1: %{
1.105 paf 2: /** @file
1.106 paf 3: Parser: compiler(lexical parser and grammar).
4:
1.262 moko 5: Copyright (c) 2001-2012 Art. Lebedev Studio (http://www.artlebedev.com)
1.168 parser 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.217 paf 7:
1.262 moko 8:
1.88 paf 9: */
10:
1.263 ! misha 11: volatile const char * IDENT_COMPILE_Y = "$Id: compile.y,v 1.262 2012-03-16 09:24:12 moko Exp $";
1.262 moko 12:
1.106 paf 13: /**
14: @todo parser4:
15: - cache compiled code from request to request. to do that...
16: -#: make method definitions, @CLASS, @BASE, @USE instructions,
1.88 paf 17: which would be executed afterwards, and actions
18: now performed at compile time would be delayed to run time.
1.106 paf 19: -#: make cache expiration on time and on disk-change of class source
20: -#: in apache use subpools for compiled class storage
21: -#: in iis make up specialized Pool object for that
1.24 paf 22: */
23:
1.206 paf 24: #define YYSTYPE ArrayOperation*
1.9 paf 25: #define YYPARSE_PARAM pc
26: #define YYLEX_PARAM pc
27: #define YYDEBUG 1
1.106 paf 28: #define YYERROR_VERBOSE 1
1.206 paf 29: #define yyerror(msg) real_yyerror((Parse_control *)pc, msg)
1.9 paf 30: #define YYPRINT(file, type, value) yyprint(file, type, value)
1.1 paf 31:
1.206 paf 32: // includes
33:
1.1 paf 34: #include "compile_tools.h"
1.8 paf 35: #include "pa_value.h"
1.12 paf 36: #include "pa_request.h"
1.39 paf 37: #include "pa_vobject.h"
1.52 paf 38: #include "pa_vdouble.h"
1.98 paf 39: #include "pa_globals.h"
1.200 paf 40: #include "pa_vmethod_frame.h"
1.39 paf 41:
1.206 paf 42: // defines
43:
1.97 paf 44: #define USE_CONTROL_METHOD_NAME "USE"
1.226 misha 45: #define OPTIONS_CONTROL_METHOD_NAME "OPTIONS"
46: #define OPTION_ALL_VARS_LOCAL_NAME "locals"
1.230 misha 47: #define OPTION_PARTIAL_CLASS "partial"
1.238 misha 48: #define REM_OPERATOR_NAME "rem"
1.1 paf 49:
1.206 paf 50: // forwards
51:
52: static int real_yyerror(Parse_control* pc, char* s);
53: static void yyprint(FILE* file, int type, YYSTYPE value);
54: static int yylex(YYSTYPE* lvalp, void* pc);
1.1 paf 55:
1.216 paf 56: static const VBool vfalse(false);
57: static const VBool vtrue(true);
1.261 moko 58: static const VString vempty;
1.216 paf 59:
1.8 paf 60: // local convinient inplace typecast & var
1.205 paf 61: #undef PC
1.206 paf 62: #define PC (*(Parse_control *)pc)
63: #undef POOL
1.114 paf 64: #define POOL (*PC.pool)
1.107 paf 65: #ifndef DOXYGEN
1.1 paf 66: %}
67:
68: %pure_parser
69:
1.13 paf 70: %token EON
1.4 paf 71: %token STRING
1.1 paf 72: %token BOGUS
1.55 paf 73:
1.58 paf 74: %token BAD_STRING_COMPARISON_OPERATOR
1.114 paf 75: %token BAD_HEX_LITERAL
1.171 parser 76: %token BAD_METHOD_DECL_START
1.193 paf 77: %token BAD_METHOD_PARAMETER_NAME_CHARACTER
1.209 paf 78: %token BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE
1.58 paf 79:
1.59 paf 80: %token LAND "&&"
1.58 paf 81: %token LOR "||"
1.193 paf 82: %token LXOR "!||"
83: %token NXOR "!|"
1.58 paf 84:
85: %token NLE "<="
86: %token NGE ">="
87: %token NEQ "=="
88: %token NNE "!="
1.195 paf 89: %token NSL "<<"
90: %token NSR ">>"
1.58 paf 91:
92: %token SLT "lt"
93: %token SGT "gt"
94: %token SLE "le"
95: %token SGE "ge"
96: %token SEQ "eq"
97: %token SNE "ne"
98:
1.67 paf 99: %token DEF "def"
100: %token IN "in"
101: %token FEXISTS "-f"
1.127 paf 102: %token DEXISTS "-d"
1.95 paf 103: %token IS "is"
1.67 paf 104:
1.216 paf 105: %token LITERAL_TRUE "true"
106: %token LITERAL_FALSE "false"
107:
1.57 paf 108: /* logical */
1.193 paf 109: %left "!||"
1.57 paf 110: %left "||"
111: %left "&&"
1.131 paf 112: %left '<' '>' "<=" ">=" "lt" "gt" "le" "ge"
113: %left "==" "!=" "eq" "ne"
114: %left "is" "def" "in" "-f" "-d"
1.57 paf 115:
116: /* bitwise */
1.193 paf 117: %left "!|"
1.131 paf 118: %left '|'
119: %left '&'
1.202 paf 120: %left "<<" ">>"
1.57 paf 121:
1.56 paf 122: /* numerical */
1.202 paf 123: %left '+' '-'
124: %left '*' '/' '\\' '%'
125: %left NUNARY /* unary - + */
126:
127: /* out-of-group */
128: %left '~' /* bitwise */
129: %left '!' /* logical */
1.1 paf 130:
131: %%
1.195 paf 132: all:
1.10 paf 133: one_big_piece {
1.251 misha 134: Method* method=new Method(Method::CT_ANY,
1.81 paf 135: 0, 0, /*min, max numbered_params_count*/
1.75 paf 136: 0/*param_names*/, 0/*local_names*/,
137: $1/*parser_code*/, 0/*native_code*/);
1.251 misha 138: PC.cclass->set_method(PC.alias_method(main_method_name), method);
1.10 paf 139: }
140: | methods;
141:
142: methods: method | methods method;
143: one_big_piece: maybe_codes;
144:
1.34 paf 145: method: control_method | code_method;
146:
147: control_method: '@' STRING '\n'
1.132 paf 148: maybe_control_strings {
1.260 misha 149: const String& command=LA2S(*$2)->trim(String::TRIM_END);
1.34 paf 150: YYSTYPE strings_code=$4;
1.206 paf 151: if(strings_code->count()<1*OPERATIONS_PER_OPVALUE) {
1.114 paf 152: strcpy(PC.error, "@");
153: strcat(PC.error, command.cstr());
154: strcat(PC.error, " is empty");
1.37 paf 155: YYERROR;
156: }
1.74 paf 157: if(command==CLASS_NAME) {
1.206 paf 158: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.263 ! misha 159: PC.class_add();
1.73 paf 160: // new class' name
1.260 misha 161: const String& name=LA2S(*strings_code)->trim(String::TRIM_END);
1.73 paf 162: // creating the class
1.206 paf 163: VStateless_class* cclass=new VClass;
1.226 misha 164: PC.cclass_new=cclass;
165: PC.cclass_new->set_name(name);
1.73 paf 166: } else {
1.206 paf 167: strcpy(PC.error, "@"CLASS_NAME" must contain only one line with class name (contains more then one)");
1.34 paf 168: YYERROR;
169: }
1.130 paf 170: } else if(command==USE_CONTROL_METHOD_NAME) {
1.263 ! misha 171: PC.class_add();
1.206 paf 172: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE)
1.260 misha 173: PC.request.use_file(PC.request.main_class, LA2S(*strings_code, i)->trim(String::TRIM_END), PC.request.get_used_filename(PC.file_no));
1.130 paf 174: } else if(command==BASE_NAME) {
1.226 misha 175: if(PC.append){
176: strcpy(PC.error, "can't set base while appending methods to class '");
177: strncat(PC.error, PC.cclass->name().cstr(), MAX_STRING/2);
178: strcat(PC.error, "'");
179: YYERROR;
180: }
181: PC.class_add();
1.188 paf 182: if(PC.cclass->base_class()) { // already changed from default?
1.130 paf 183: strcpy(PC.error, "class already have a base '");
1.226 misha 184: strncat(PC.error, PC.cclass->base_class()->name().cstr(), MAX_STRING/2);
1.130 paf 185: strcat(PC.error, "'");
186: YYERROR;
187: }
1.206 paf 188: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.260 misha 189: const String& base_name=LA2S(*strings_code)->trim(String::TRIM_END);
1.252 misha 190: if(Value* base_class_value=PC.request.get_class(base_name)) {
1.206 paf 191: // @CLASS == @BASE sanity check
192: if(VStateless_class *base_class=base_class_value->get_class()) {
193: if(PC.cclass==base_class) {
194: strcpy(PC.error, "@"CLASS_NAME" equals @"BASE_NAME);
195: YYERROR;
196: }
197: PC.cclass->get_class()->set_base(base_class);
198: } else { // they asked to derive from a class without methods ['env' & co]
199: strcpy(PC.error, base_name.cstr());
200: strcat(PC.error, ": you can not derive from this class in @"BASE_NAME);
201: YYERROR;
202: }
203: } else {
1.130 paf 204: strcpy(PC.error, base_name.cstr());
205: strcat(PC.error, ": undefined class in @"BASE_NAME);
1.73 paf 206: YYERROR;
207: }
1.34 paf 208: } else {
1.130 paf 209: strcpy(PC.error, "@"BASE_NAME" must contain sole name");
1.34 paf 210: YYERROR;
211: }
1.223 misha 212: } else if(command==OPTIONS_CONTROL_METHOD_NAME) {
213: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE) {
1.260 misha 214: const String& option=LA2S(*strings_code, i)->trim(String::TRIM_END);
1.226 misha 215: if(option==OPTION_ALL_VARS_LOCAL_NAME){
216: PC.set_all_vars_local();
1.230 misha 217: } else if(option==OPTION_PARTIAL_CLASS){
218: if(PC.cclass_new){
219: if(VStateless_class* existed=PC.get_existed_class(PC.cclass_new)){
220: if(!PC.reuse_existed_class(existed)){
221: strcpy(PC.error, "can't append methods to '");
222: strncat(PC.error, PC.cclass_new->name().cstr(), MAX_STRING/2);
223: strcat(PC.error, "' - the class wasn't marked as partial");
224: YYERROR;
225: }
1.226 misha 226: } else {
1.256 misha 227: // marks the new class as partial. we will be able to add methods here later.
1.230 misha 228: PC.cclass_new->set_partial();
1.226 misha 229: }
1.230 misha 230: } else {
231: strcpy(PC.error, "'"OPTION_PARTIAL_CLASS"' option should be used straight after @"CLASS_NAME);
1.226 misha 232: YYERROR;
233: }
1.256 misha 234: } else if(option==method_call_type_static){
235: PC.set_methods_call_type(Method::CT_STATIC);
236: } else if(option==method_call_type_dynamic){
237: PC.set_methods_call_type(Method::CT_DYNAMIC);
1.223 misha 238: } else {
1.226 misha 239: strcpy(PC.error, "'");
240: strncat(PC.error, option.cstr(), MAX_STRING/2);
241: strcat(PC.error, "' invalid option. valid options are "
1.256 misha 242: "'"OPTION_PARTIAL_CLASS"', '"OPTION_ALL_VARS_LOCAL_NAME"'"
243: ", '"METHOD_CALL_TYPE_STATIC"' and '"METHOD_CALL_TYPE_DYNAMIC"'"
244: );
1.223 misha 245: YYERROR;
246: }
247: }
1.130 paf 248: } else {
249: strcpy(PC.error, "'");
250: strncat(PC.error, command.cstr(), MAX_STRING/2);
251: strcat(PC.error, "' invalid special name. valid names are "
1.223 misha 252: "'"CLASS_NAME"', '"USE_CONTROL_METHOD_NAME"', '"BASE_NAME"' and '"OPTIONS_CONTROL_METHOD_NAME"'.");
1.130 paf 253: YYERROR;
1.34 paf 254: }
255: };
1.132 paf 256: maybe_control_strings: empty | control_strings;
1.259 misha 257: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2); };
1.37 paf 258: control_string: maybe_string '\n';
259: maybe_string: empty | STRING;
1.34 paf 260:
1.222 misha 261: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n' {
1.226 misha 262: PC.class_add();
1.208 paf 263: PC.explicit_result=false;
1.10 paf 264:
265: YYSTYPE params_names_code=$3;
1.206 paf 266: ArrayString* params_names=0;
267: if(int size=params_names_code->count()) {
268: params_names=new ArrayString;
269: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
270: *params_names+=LA2S(*params_names_code, i);
1.75 paf 271: }
1.10 paf 272:
273: YYSTYPE locals_names_code=$4;
1.206 paf 274: ArrayString* locals_names=0;
1.223 misha 275: bool all_vars_local=false;
1.206 paf 276: if(int size=locals_names_code->count()) {
277: locals_names=new ArrayString;
1.208 paf 278: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE) {
279: const String* local_name=LA2S(*locals_names_code, i);
280: if(*local_name==RESULT_VAR_NAME)
281: PC.explicit_result=true;
1.226 misha 282: else if(*local_name==OPTION_ALL_VARS_LOCAL_NAME)
1.223 misha 283: all_vars_local=true;
1.208 paf 284: else
285: *locals_names+=local_name;
286: }
1.75 paf 287: }
1.231 misha 288: if(!all_vars_local && PC.cclass && PC.cclass->is_vars_local())
1.223 misha 289: all_vars_local=true;
1.10 paf 290:
1.208 paf 291: Method* method=new Method(
1.206 paf 292: //name,
1.257 misha 293: GetMethodCallType(PC, *$2),
1.81 paf 294: 0, 0/*min,max numbered_params_count*/,
1.76 paf 295: params_names, locals_names,
1.223 misha 296: 0/*to be filled later in next {} */, 0, all_vars_local);
1.221 misha 297:
1.208 paf 298: *reinterpret_cast<Method**>(&$$)=method;
1.222 misha 299: } maybe_codes {
1.251 misha 300: Method* method=reinterpret_cast<Method*>($7);
1.231 misha 301: // fill in the code
1.251 misha 302: method->parser_code=$8;
1.231 misha 303:
304: // register in class
305: const String& name=*LA2S(*$2);
1.251 misha 306: PC.cclass->set_method(PC.alias_method(name), method);
1.8 paf 307: };
1.10 paf 308:
309: maybe_bracketed_strings: empty | bracketed_maybe_strings;
1.259 misha 310: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2;};
1.10 paf 311: maybe_strings: empty | strings;
1.259 misha 312: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3); };
1.10 paf 313:
314: maybe_comment: empty | STRING;
1.1 paf 315:
316: /* codes */
317:
1.10 paf 318: maybe_codes: empty | codes;
319:
1.259 misha 320: codes: code | codes code { $$=$1; P(*$$, *$2); };
1.81 paf 321: code: write_string | action;
1.209 paf 322: action: get | put | call;
1.1 paf 323:
324: /* get */
325:
1.64 paf 326: get: get_value {
1.238 misha 327: $$=N();
328: YYSTYPE code=$1;
1.247 misha 329: size_t count=code->count();
1.245 misha 330:
1.235 misha 331: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.247 misha 332: if(
333: count!=3
334: || !maybe_change_first_opcode(*code, OP::OP_VALUE__GET_ELEMENT, /*=>*/OP::OP_VALUE__GET_ELEMENT__WRITE)
335: )
1.238 misha 336: #endif
1.247 misha 337:
1.245 misha 338: #ifdef OPTIMIZE_BYTECODE_GET_SELF_ELEMENT
1.247 misha 339: if(
340: count!=3
341: || !maybe_change_first_opcode(*code, OP::OP_WITH_SELF__VALUE__GET_ELEMENT, /*=>*/OP::OP_WITH_SELF__VALUE__GET_ELEMENT__WRITE)
342: )
1.245 misha 343: #endif
344:
1.239 misha 345: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
1.247 misha 346: if(
347: count!=5
348: || !maybe_change_first_opcode(*code, OP::OP_GET_OBJECT_ELEMENT, /*=>*/OP::OP_GET_OBJECT_ELEMENT__WRITE)
349: )
1.239 misha 350: #endif
351:
352: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
1.247 misha 353: if(
354: count!=5
355: || !maybe_change_first_opcode(*code, OP::OP_GET_OBJECT_VAR_ELEMENT, /*=>*/OP::OP_GET_OBJECT_VAR_ELEMENT__WRITE)
356: )
1.238 misha 357: #endif
1.247 misha 358: {
359: changetail_or_append(*code,
360: OP::OP_GET_ELEMENT, false, /*=>*/OP::OP_GET_ELEMENT__WRITE,
361: /*or */OP::OP_WRITE_VALUE
362: ); /* value=pop; wcontext.write(value) */
1.246 misha 363: }
1.247 misha 364:
1.238 misha 365: P(*$$, *code);
1.1 paf 366: };
1.259 misha 367: get_value: '$' get_name_value { $$=$2; };
1.64 paf 368: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.259 misha 369: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2; };
1.44 paf 370: name_without_curly_rdive:
371: name_without_curly_rdive_read
372: | name_without_curly_rdive_class;
1.19 paf 373: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 374: $$=N();
1.238 misha 375: YYSTYPE diving_code=$1;
1.239 misha 376: size_t count=diving_code->count();
1.247 misha 377:
378: if(maybe_make_self(*$$, *diving_code, count)) {
379: // $self.
380: } else
1.239 misha 381:
382: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
1.247 misha 383: if(maybe_make_get_object_element(*$$, *diving_code, count)){
1.245 misha 384: // optimization for $object.field + ^object.method[
1.247 misha 385: } else
1.238 misha 386: #endif
1.239 misha 387:
388: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
1.247 misha 389: if(maybe_make_get_object_var_element(*$$, *diving_code, count)){
1.245 misha 390: // optimization for $object.$var
1.247 misha 391: } else
1.238 misha 392: #endif
1.239 misha 393:
394: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.248 misha 395: if(
396: count>=4
397: && (*diving_code)[0].code==OP::OP_VALUE
398: && (*diving_code)[3].code==OP::OP_GET_ELEMENT
399: ){
400: // optimization
1.239 misha 401: O(*$$,
1.247 misha 402: (PC.in_call_value && count==4)
1.239 misha 403: ? OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR // ^object[ : OP_VALUE+origin+string+OP_GET_ELEMENT => OP_VALUE__GET_ELEMENT_OR_OPERATOR+origin+string
404: : OP::OP_VALUE__GET_ELEMENT // $object : OP_VALUE+origin+string+OP_GET_ELEMENT => OP_VALUE__GET_ELEMENT+origin+string
405: );
406: P(*$$, *diving_code, 1/*offset*/, 2/*limit*/); // copy origin+value
1.247 misha 407: if(count>4)
408: P(*$$, *diving_code, 4); // copy tail
1.239 misha 409: } else {
410: O(*$$, OP::OP_WITH_READ); /* stack: starting context */
411: P(*$$, *diving_code);
412: }
1.233 misha 413: #else
1.247 misha 414: {
1.238 misha 415: O(*$$, OP::OP_WITH_READ); /* stack: starting context */
1.179 paf 416:
1.238 misha 417: // ^if OP_ELEMENT => ^if OP_ELEMENT_OR_OPERATOR
418: // optimized OP_VALUE+origin+string+OP_GET_ELEMENT. => OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
1.239 misha 419: if(PC.in_call_value && count==4)
420: diving_code->put(count-1, OP::OP_GET_ELEMENT_OR_OPERATOR);
1.206 paf 421: P(*$$, *diving_code);
1.239 misha 422: }
1.233 misha 423: #endif
1.22 paf 424: /* diving code; stack: current context */
1.1 paf 425: };
1.259 misha 426: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2); };
427: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2); };
1.1 paf 428:
429: /* put */
430:
1.81 paf 431: put: '$' name_expr_wdive construct {
1.241 misha 432: $$=N();
1.244 misha 433: #ifdef OPTIMIZE_BYTECODE_CONSTRUCT
434: if(maybe_optimize_construct(*$$, *$2, *$3)){
1.246 misha 435: // $a(expr), $.a(expr), $a[value], $.a[value], $self.a[value], $self.a(expr)
1.241 misha 436: } else
437: #endif
438: {
439: P(*$$, *$2); /* stack: context,name */
440: P(*$$, *$3); /* stack: context,name,constructor_value */
441: }
1.20 paf 442: };
1.44 paf 443: name_expr_wdive:
1.157 parser 444: name_expr_wdive_root
445: | name_expr_wdive_write
1.44 paf 446: | name_expr_wdive_class;
1.157 parser 447: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 448: $$=N();
1.238 misha 449: YYSTYPE diving_code=$1;
1.247 misha 450: size_t count=diving_code->count();
451:
452: if(maybe_make_self(*$$, *diving_code, count)) {
453: // $self.
454: } else
455: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
456: if(
457: count>=4
458: && (*diving_code)[0].code==OP::OP_VALUE
459: && (*diving_code)[3].code==OP::OP_GET_ELEMENT
460: ){
461: O(*$$, OP::OP_WITH_ROOT__VALUE__GET_ELEMENT);
462: P(*$$, *diving_code, 1/*offset*/, 2/*limit*/); // copy origin+value
463: if(count>4)
464: P(*$$, *diving_code, 4); // tail
465: } else
466: #endif
467: {
1.229 misha 468: O(*$$, OP::OP_WITH_ROOT); /* stack: starting context */
1.206 paf 469: P(*$$, *diving_code);
1.23 paf 470: }
471: /* diving code; stack: current context */
1.156 parser 472: };
1.157 parser 473: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 474: $$=N();
1.229 misha 475: O(*$$, OP::OP_WITH_WRITE); /* stack: starting context */
1.206 paf 476: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 477: };
1.259 misha 478: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2); };
1.20 paf 479:
1.244 misha 480: construct:
1.163 parser 481: construct_square
482: | construct_round
483: | construct_curly
1.149 parser 484: ;
1.211 paf 485: construct_square: '[' {
486: // allow $result_or_other_variable[ letters here any time ]
487: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
488: } any_constructor_code_value {
1.213 paf 489: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.211 paf 490: } ']' {
1.149 parser 491: // stack: context, name
1.211 paf 492: $$=$3; // stack: context, name, value
1.229 misha 493: O(*$$, OP::OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 494: }
495: ;
1.149 parser 496: construct_round: '(' expr_value ')' {
1.206 paf 497: $$=N();
1.229 misha 498: O(*$$, OP::OP_PREPARE_TO_EXPRESSION);
1.149 parser 499: // stack: context, name
1.206 paf 500: P(*$$, *$2); // stack: context, name, value
1.229 misha 501: O(*$$, OP::OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 502: }
1.52 paf 503: ;
1.149 parser 504: construct_curly: '{' maybe_codes '}' {
505: // stack: context, name
1.206 paf 506: $$=N();
1.229 misha 507: OA(*$$, OP::OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 508: };
509:
1.55 paf 510: any_constructor_code_value:
1.261 moko 511: empty_value /* optimized $var[] case */
1.52 paf 512: | STRING /* optimized $var[STRING] case */
1.55 paf 513: | constructor_code_value /* $var[something complex] */
1.1 paf 514: ;
1.55 paf 515: constructor_code_value: constructor_code {
1.206 paf 516: $$=N();
1.229 misha 517: OA(*$$, OP::OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 518: /* some code that writes to that context */
519: /* context=pop; stack: context.value() */
1.1 paf 520: };
1.55 paf 521: constructor_code: codes__excluding_sole_str_literal;
1.259 misha 522: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2); };
1.27 paf 523:
1.1 paf 524: /* call */
525:
1.66 paf 526: call: call_value {
1.238 misha 527: #ifdef OPTIMIZE_BYTECODE_CUT_REM_OPERATOR
528: if((*$1).count())
529: #endif
530: {
531: $$=$1; /* stack: value */
1.249 misha 532: if(!maybe_change_first_opcode(*$$, OP::OP_CONSTRUCT_OBJECT, /*=>*/OP::OP_CONSTRUCT_OBJECT__WRITE))
533: changetail_or_append(*$$,
534: OP::OP_CALL, true, /*=>*/ OP::OP_CALL__WRITE,
535: /*or */OP::OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.238 misha 536: }
1.66 paf 537: };
1.177 paf 538: call_value: '^' {
1.180 paf 539: PC.in_call_value=true;
1.177 paf 540: }
541: call_name {
1.180 paf 542: PC.in_call_value=false;
1.177 paf 543: }
1.154 parser 544: store_params EON { /* ^field.$method{vasya} */
1.238 misha 545: #ifdef OPTIMIZE_BYTECODE_CUT_REM_OPERATOR
1.242 misha 546: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.238 misha 547: const String* operator_name=LA2S(*$3, 0, OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR);
1.242 misha 548: #else
549: const String* operator_name=LA2S(*$3, 1);
550: #endif
1.249 misha 551: if(operator_name && *operator_name==REM_OPERATOR_NAME){
1.238 misha 552: $$=N();
553: } else
554: #endif
555: {
556: YYSTYPE params_code=$5;
557: if(params_code->count()==3) { // probably [] case. [OP::OP_VALUE+origin+Void]
558: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.261 moko 559: if(const String * string=value->get_string())
560: if(string->is_empty()) // value is empty string?
561: params_code=0; // ^zzz[] case. don't append lone empty param.
1.238 misha 562: }
563: /* stack: context, method_junction */
1.249 misha 564:
565: YYSTYPE var_code=$3;
566: if(
567: var_code->count()==8
568: && (*var_code)[0].code==OP::OP_VALUE__GET_CLASS
569: && (*var_code)[3].code==OP::OP_PREPARE_TO_CONSTRUCT_OBJECT
570: && (*var_code)[4].code==OP::OP_VALUE
571: && (*var_code)[7].code==OP::OP_GET_ELEMENT
572: ){
573: yyval=N();
574: O(*$$, OP::OP_CONSTRUCT_OBJECT);
575: P(*$$, *var_code, 1/*offset*/, 2/*limit*/); // class name
576: P(*$$, *var_code, 5/*offset*/, 2/*limit*/); // constructor name
577: OA(*$$, params_code);
578: } else
579: {
580: $$=var_code; /* with_xxx,diving code; stack: context,method_junction */
581: OA(*$$, OP::OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
582: }
1.238 misha 583: }
1.1 paf 584: };
585:
1.43 paf 586: call_name: name_without_curly_rdive;
1.38 paf 587:
1.259 misha 588: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2); };
1.69 paf 589: store_param:
590: store_square_param
591: | store_round_param
592: | store_curly_param
1.31 paf 593: ;
1.210 paf 594: store_square_param: '[' {
1.211 paf 595: // allow ^call[ letters here any time ]
1.210 paf 596: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
597: } store_code_param_parts {
1.213 paf 598: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.259 misha 599: } ']' {$$=$3;};
600: store_round_param: '(' store_expr_param_parts ')' {$$=$2;};
601: store_curly_param: '{' store_curly_param_parts '}' {$$=$2;};
1.69 paf 602: store_code_param_parts:
603: store_code_param_part
1.259 misha 604: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3); }
1.69 paf 605: ;
606: store_expr_param_parts:
607: store_expr_param_part
1.259 misha 608: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3); }
1.69 paf 609: ;
1.94 paf 610: store_curly_param_parts:
611: store_curly_param_part
1.259 misha 612: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3); }
1.94 paf 613: ;
1.120 paf 614: store_code_param_part: code_param_value {
1.32 paf 615: $$=$1;
1.120 paf 616: };
1.214 paf 617: store_expr_param_part: expr_value {
618: YYSTYPE expr_code=$1;
1.215 paf 619: if(expr_code->count()==3
1.234 misha 620: && (*expr_code)[0].code==OP::OP_VALUE) { // optimizing (double/bool/incidently 'string' too) case. [OP::OP_VALUE+origin+Double]. no evaluating
1.214 paf 621: $$=expr_code;
622: } else {
1.238 misha 623: YYSTYPE code=N();
1.229 misha 624: O(*code, OP::OP_PREPARE_TO_EXPRESSION);
1.214 paf 625: P(*code, *expr_code);
1.229 misha 626: O(*code, OP::OP_WRITE_EXPR_RESULT);
1.214 paf 627: $$=N();
1.229 misha 628: OA(*$$, OP::OP_EXPR_CODE__STORE_PARAM, code);
1.214 paf 629: }
1.69 paf 630: };
1.94 paf 631: store_curly_param_part: maybe_codes {
1.206 paf 632: $$=N();
1.229 misha 633: OA(*$$, OP::OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 634: };
1.120 paf 635: code_param_value:
1.261 moko 636: empty_value /* optimized [;...] case */
1.120 paf 637: | STRING /* optimized [STRING] case */
638: | constructor_code_value /* [something complex] */
639: ;
1.1 paf 640:
641: /* name */
642:
1.259 misha 643: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2); };
1.1 paf 644:
1.259 misha 645: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2); };
1.1 paf 646: name_step: name_advance1 '.';
647: name_advance1: name_expr_value {
1.177 paf 648: // we know that name_advance1 not called from ^xxx context
649: // so we'll not check for operator call possibility as we do in name_advance2
650:
1.1 paf 651: /* stack: context */
652: $$=$1; /* stack: context,name */
1.229 misha 653: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 654: };
655: name_advance2: name_expr_value {
656: /* stack: context */
657: $$=$1; /* stack: context,name */
1.229 misha 658: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 659: }
1.4 paf 660: | STRING BOGUS
1.1 paf 661: ;
662: name_expr_value:
1.4 paf 663: STRING /* subname_is_const */
1.1 paf 664: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 665: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 666: | name_square_code_value /* [codes] */
1.1 paf 667: ;
668: name_expr_subvar_value: '$' subvar_ref_name_rdive {
669: $$=$2;
1.229 misha 670: O(*$$, OP::OP_GET_ELEMENT);
1.1 paf 671: };
1.4 paf 672: name_expr_with_subvar_value: STRING subvar_get_writes {
1.238 misha 673: YYSTYPE code;
1.183 paf 674: {
1.206 paf 675: change_string_literal_to_write_string_literal(*(code=$1));
676: P(*code, *$2);
1.183 paf 677: }
1.206 paf 678: $$=N();
1.229 misha 679: OA(*$$, OP::OP_STRING_POOL, code);
1.1 paf 680: };
1.212 paf 681: name_square_code_value: '[' {
682: // allow $result_or_other_variable[ letters here any time ]
683: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
684: } codes {
1.213 paf 685: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.212 paf 686: } ']' {
1.206 paf 687: $$=N();
1.229 misha 688: OA(*$$, OP::OP_OBJECT_POOL, $3); /* stack: empty write context */
1.183 paf 689: /* some code that writes to that context */
690: /* context=pop; stack: context.value() */
1.160 parser 691: };
1.154 parser 692: subvar_ref_name_rdive: STRING {
1.206 paf 693: $$=N();
1.229 misha 694: O(*$$, OP::OP_WITH_READ);
1.206 paf 695: P(*$$, *$1);
1.1 paf 696: };
1.259 misha 697: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2); };
1.1 paf 698: subvar__get_write: '$' subvar_ref_name_rdive {
699: $$=$2;
1.229 misha 700: O(*$$, OP::OP_GET_ELEMENT__WRITE);
1.42 paf 701: };
702:
1.154 parser 703: class_prefix:
704: class_static_prefix
705: | class_constructor_prefix
706: ;
1.155 parser 707: class_static_prefix: STRING ':' {
708: $$=$1; // stack: class name string
1.206 paf 709: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
710: if(VStateless_class* base=PC.cclass->base_class()) {
711: change_string_literal_value(*$$, base->name());
1.189 paf 712: } else {
713: strcpy(PC.error, "no base class declared");
714: YYERROR;
715: }
716: }
1.238 misha 717: // optimized OP_VALUE+origin+string+OP_GET_CLASS => OP_VALUE__GET_CLASS+origin+string
1.259 misha 718: maybe_change_first_opcode(*$$, OP::OP_VALUE, OP::OP_VALUE__GET_CLASS);
1.155 parser 719: };
720: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 721: $$=$1;
1.180 paf 722: if(!PC.in_call_value) {
1.154 parser 723: strcpy(PC.error, ":: not allowed here");
724: YYERROR;
725: }
1.229 misha 726: O(*$$, OP::OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 727: };
728:
1.53 paf 729:
1.56 paf 730: /* expr */
1.53 paf 731:
1.214 paf 732: expr_value: expr;
1.56 paf 733: expr:
1.214 paf 734: double_or_STRING
1.216 paf 735: | true_value
736: | false_value
1.64 paf 737: | get_value
1.66 paf 738: | call_value
1.259 misha 739: | '"' string_inside_quotes_value '"' { $$ = $2; }
740: | '\'' string_inside_quotes_value '\'' { $$ = $2; }
1.60 paf 741: | '(' expr ')' { $$ = $2; }
742: /* stack: operand // stack: @operand */
1.259 misha 743: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP::OP_NEG); }
744: | '+' expr %prec NUNARY { $$=$2; }
745: | '~' expr { $$=$2; O(*$$, OP::OP_INV); }
746: | '!' expr { $$=$2; O(*$$, OP::OP_NOT); }
747: | "def" expr { $$=$2; O(*$$, OP::OP_DEF); }
748: | "in" expr { $$=$2; O(*$$, OP::OP_IN); }
749: | "-f" expr { $$=$2; O(*$$, OP::OP_FEXISTS); }
750: | "-d" expr { $$=$2; O(*$$, OP::OP_DEXISTS); }
1.60 paf 751: /* stack: a,b // stack: a@b */
1.259 misha 752: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_SUB); }
753: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_ADD); }
754: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MUL); }
755: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_DIV); }
756: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MOD); }
757: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_INTDIV); }
758: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SL); }
759: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SR); }
760: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_AND); }
761: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_OR); }
762: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_XOR); }
763: | expr "&&" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_AND); }
764: | expr "||" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_OR); }
765: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_LOG_XOR); }
766: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LT); }
767: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GT); }
768: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LE); }
769: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GE); }
770: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_EQ); }
771: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_NE); }
772: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LT); }
773: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GT); }
774: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LE); }
775: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GE); }
776: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_EQ); }
777: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_NE); }
778: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_IS); }
1.56 paf 779: ;
1.214 paf 780:
781: double_or_STRING: STRING {
1.238 misha 782: // optimized OP_STRING => OP_VALUE for doubles
1.214 paf 783: maybe_change_string_literal_to_double_literal(*($$=$1));
784: };
1.55 paf 785:
1.65 paf 786: string_inside_quotes_value: maybe_codes {
1.238 misha 787: #ifdef OPTIMIZE_BYTECODE_STRING_POOL
788: // it brakes ^if(" 09 "){...}
789: YYSTYPE code=$1;
790: $$=N();
1.239 misha 791: if(code->count()==3 && maybe_change_first_opcode(*code, OP::OP_STRING__WRITE, OP::OP_VALUE)){
1.238 misha 792: // optimized OP_STRING__WRITE+origin+value => OP_VALUE+origin+value without starting OP_STRING_POOL
793: P(*$$, *code);
794: } else {
795: OA(*$$, OP::OP_STRING_POOL, code); /* stack: empty write context */
796: }
797: #else
1.206 paf 798: $$=N();
1.229 misha 799: OA(*$$, OP::OP_STRING_POOL, $1); /* stack: empty write context */
1.238 misha 800: #endif
1.183 paf 801: /* some code that writes to that context */
802: /* context=pop; stack: context.get_string() */
1.53 paf 803: };
1.1 paf 804:
1.27 paf 805: /* basics */
1.1 paf 806:
1.81 paf 807: write_string: STRING {
1.238 misha 808: // optimized OP_STRING+OP_WRITE_VALUE => OP_STRING__WRITE
1.259 misha 809: change_string_literal_to_write_string_literal(*($$=$1));
1.54 paf 810: };
811:
1.261 moko 812: empty_value: /* empty */ { $$=VL(/*we know that we will not change it*/const_cast<VString*>(&vempty), 0, 0, 0); }
1.259 misha 813: true_value: "true" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vtrue), 0, 0, 0); }
814: false_value: "false" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vfalse), 0, 0, 0); }
1.216 paf 815:
1.259 misha 816: empty: /* empty */ { $$=N(); };
1.1 paf 817:
818: %%
1.105 paf 819: #endif
1.1 paf 820:
821: /*
822: 000$111(2222)00
823: 000$111{3333}00
1.9 paf 824: $,^: push,=0
1.1 paf 825: 1:( { break=pop
826: 2:( ) pop
827: 3:{ } pop
828:
829: 000^111(2222)4444{33333}4000
1.9 paf 830: $,^: push,=0
1.1 paf 831: 1:( { break=pop
832: 2:( )=4
833: 3:{ }=4
834: 4:[^({]=pop
835: */
836:
1.206 paf 837: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
838: pc.source--;
839: if(pc.pos.col==0) {
840: --pc.pos.line; pc.pos.col=last_line_end_col;
841: } else
842: --pc.pos.col;
843:
844: }
845: static int yylex(YYSTYPE *lvalp, void *apc) {
846: register Parse_control& pc=*static_cast<Parse_control*>(apc);
847:
848: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 849: #define RC {result=c; goto break2; }
1.1 paf 850:
1.206 paf 851: register int c;
852: int result;
1.1 paf 853:
1.206 paf 854: if(pc.pending_state) {
855: result=pc.pending_state;
856: pc.pending_state=0;
1.1 paf 857: return result;
858: }
859:
1.206 paf 860: const char *begin=pc.source;
861: Pos begin_pos=pc.pos;
1.91 paf 862: const char *end;
1.67 paf 863: int skip_analized=0;
1.50 paf 864: while(true) {
1.206 paf 865: c=*(end=(pc.source++));
866: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 867:
1.208 paf 868: if(c=='\n')
1.206 paf 869: pc.pos_next_line();
1.208 paf 870: else
1.206 paf 871: pc.pos_next_c(c);
1.208 paf 872: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 873:
1.208 paf 874: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 875: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 876: // @SPECIAL
877: // ...
878: // @<here =
1.206 paf 879: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 880: } // continuing checks
1.206 paf 881: if(pc.ls==LS_USER) {
882: push_LS(pc, LS_DEF_NAME);
1.171 parser 883: RC;
1.175 paf 884: } else // @ in first column inside some code [when could that be?]
1.171 parser 885: result=BAD_METHOD_DECL_START;
886: goto break2;
1.209 paf 887: }
888: if(c=='^') {
1.206 paf 889: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 890: // handle after-method situation
1.206 paf 891: pop_LS(pc);
1.203 paf 892: result=EON;
893: skip_analized=-1; // return to punctuation afterwards to assure it's literality
894: goto break2;
895: }
1.206 paf 896: switch(pc.ls) {
1.169 parser 897: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
898: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
899: case LS_VAR_NAME_SIMPLE_WITH_COLON:
900: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
901: case LS_VAR_NAME_CURLY:
902: case LS_METHOD_NAME:
1.194 paf 903: case LS_USER_COMMENT:
1.169 parser 904: case LS_DEF_COMMENT:
905: // no literals in names, please
906: break;
907: default:
1.206 paf 908: switch(*pc.source) {
1.165 parser 909: // ^escaping some punctuators
1.228 misha 910: case '^': case '$': case ';': case '@':
1.126 paf 911: case '(': case ')':
1.48 paf 912: case '[': case ']':
913: case '{': case '}':
1.172 parser 914: case '"': case ':':
1.40 paf 915: if(end!=begin) {
1.206 paf 916: if(!pc.string_start)
917: pc.string_start=begin_pos;
1.40 paf 918: // append piece till ^
1.206 paf 919: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 920: }
1.63 paf 921: // reset piece 'begin' position & line
1.206 paf 922: begin=pc.source; // ->punctuation
923: begin_pos=pc.pos;
1.203 paf 924: // skip over _ after ^
1.206 paf 925: pc.source++; pc.pos.col++;
1.203 paf 926: // skip analysis = forced literal
927: continue;
1.114 paf 928:
929: // converting ^#HH into char(hex(HH))
930: case '#':
931: if(end!=begin) {
1.206 paf 932: if(!pc.string_start)
933: pc.string_start=begin_pos;
1.114 paf 934: // append piece till ^
1.206 paf 935: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 936: }
937: // #HH ?
1.228 misha 938: if(pc.source[1] && isxdigit(pc.source[1]) && pc.source[2] && isxdigit(pc.source[2])) {
1.218 paf 939: char c=(char)(
1.206 paf 940: hex_value[(unsigned char)pc.source[1]]*0x10+
1.218 paf 941: hex_value[(unsigned char)pc.source[2]]);
1.206 paf 942: if(c==0) {
1.114 paf 943: result=BAD_HEX_LITERAL;
944: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
945: }
946: // append char(hex(HH))
1.206 paf 947: pc.string.append(c);
1.114 paf 948: // skip over ^#HH
1.206 paf 949: pc.source+=3;
950: pc.pos.col+=3;
1.114 paf 951: // reset piece 'begin' position & line
1.206 paf 952: begin=pc.source; // ->after ^#HH
953: begin_pos=pc.pos;
1.203 paf 954: // skip analysis = forced literal
1.114 paf 955: continue;
956: }
1.228 misha 957: // just escaped char
958: // reset piece 'begin' position & line
959: begin=pc.source;
960: begin_pos=pc.pos;
961: // skip over _ after ^
962: pc.source++; pc.pos.col++;
963: // skip analysis = forced literal
964: continue;
1.1 paf 965: }
1.169 parser 966: break;
1.203 paf 967: }
1.169 parser 968: }
1.113 paf 969: // #comment start skipping
1.206 paf 970: if(c=='#' && pc.pos.col==1) {
1.112 paf 971: if(end!=begin) {
1.206 paf 972: if(!pc.string_start)
973: pc.string_start=begin_pos;
1.112 paf 974: // append piece till #
1.206 paf 975: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 976: }
977: // fall into COMMENT lexical state [wait for \n]
1.206 paf 978: push_LS(pc, LS_USER_COMMENT);
1.175 paf 979: continue;
1.112 paf 980: }
1.206 paf 981: switch(pc.ls) {
1.10 paf 982:
983: // USER'S = NOT OURS
1.1 paf 984: case LS_USER:
1.206 paf 985: case LS_NAME_SQUARE_PART: // name.[here].xxx
986: if(pc.trim_bof)
1.153 parser 987: switch(c) {
988: case '\n': case ' ': case '\t':
1.206 paf 989: begin=pc.source;
990: begin_pos=pc.pos;
1.152 parser 991: continue; // skip it
1.153 parser 992: default:
1.206 paf 993: pc.trim_bof=false;
1.152 parser 994: }
1.48 paf 995: switch(c) {
996: case '$':
1.206 paf 997: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 998: RC;
999: case '^':
1.206 paf 1000: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1001: RC;
1.166 parser 1002: case ']':
1.206 paf 1003: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 1004: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 1005: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 1006: RC;
1007: }
1.160 parser 1008: break;
1.166 parser 1009: case '[': // $name.[co<[>de]
1.206 paf 1010: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 1011: lexical_brackets_nestage++;
1.161 parser 1012: break;
1.112 paf 1013: }
1.209 paf 1014: if(pc.explicit_result && c)
1015: switch(c) {
1016: case '\n': case ' ': case '\t':
1017: begin=pc.source;
1018: begin_pos=pc.pos;
1019: continue; // skip it
1020: default:
1021: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
1022: goto break2;
1023: }
1.112 paf 1024: break;
1025:
1026: // #COMMENT
1.194 paf 1027: case LS_USER_COMMENT:
1.112 paf 1028: if(c=='\n') {
1029: // skip comment
1.206 paf 1030: begin=pc.source;
1031: begin_pos=pc.pos;
1.112 paf 1032:
1.206 paf 1033: pop_LS(pc);
1.112 paf 1034: continue;
1.1 paf 1035: }
1.48 paf 1036: break;
1037:
1038: // STRING IN EXPRESSION
1.145 parser 1039: case LS_EXPRESSION_STRING_QUOTED:
1040: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 1041: switch(c) {
1042: case '"':
1.145 parser 1043: case '\'':
1044: if(
1.206 paf 1045: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
1046: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
1047: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 1048: RC;
1049: }
1050: break;
1.48 paf 1051: case '$':
1.206 paf 1052: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1053: RC;
1054: case '^':
1.206 paf 1055: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1056: RC;
1.10 paf 1057: }
1058: break;
1059:
1060: // METHOD DEFINITION
1061: case LS_DEF_NAME:
1.48 paf 1062: switch(c) {
1063: case '[':
1.206 paf 1064: pc.ls=LS_DEF_PARAMS;
1.48 paf 1065: RC;
1066: case '\n':
1.206 paf 1067: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 1068: RC;
1.10 paf 1069: }
1070: break;
1.48 paf 1071:
1.10 paf 1072: case LS_DEF_PARAMS:
1.48 paf 1073: switch(c) {
1.192 paf 1074: case '$': // common error
1.193 paf 1075: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
1076: goto break2;
1.48 paf 1077: case ';':
1078: RC;
1079: case ']':
1.206 paf 1080: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 1081: RC;
1.49 paf 1082: case '\n': // wrong. bailing out
1.206 paf 1083: pop_LS(pc);
1.48 paf 1084: RC;
1.10 paf 1085: }
1086: break;
1.48 paf 1087:
1.10 paf 1088: case LS_DEF_LOCALS:
1.48 paf 1089: switch(c) {
1090: case '[':
1091: case ';':
1092: RC;
1093: case ']':
1.206 paf 1094: pc.ls=LS_DEF_COMMENT;
1.48 paf 1095: RC;
1096: case '\n': // wrong. bailing out
1.206 paf 1097: pop_LS(pc);
1.48 paf 1098: RC;
1.10 paf 1099: }
1100: break;
1.48 paf 1101:
1.10 paf 1102: case LS_DEF_COMMENT:
1103: if(c=='\n') {
1.206 paf 1104: pop_LS(pc);
1.48 paf 1105: RC;
1.37 paf 1106: }
1107: break;
1108:
1.48 paf 1109: case LS_DEF_SPECIAL_BODY:
1.175 paf 1110: if(c=='\n')
1.48 paf 1111: RC;
1112: break;
1113:
1114: // (EXPRESSION)
1.69 paf 1115: case LS_VAR_ROUND:
1116: case LS_METHOD_ROUND:
1.48 paf 1117: switch(c) {
1118: case ')':
1119: if(--lexical_brackets_nestage==0)
1.206 paf 1120: if(pc.ls==LS_METHOD_ROUND) // method round param ended
1121: pc.ls=LS_METHOD_AFTER; // look for method end
1122: else // pc.ls==LS_VAR_ROUND // variable constructor ended
1123: pop_LS(pc); // return to normal life
1.48 paf 1124: RC;
1.194 paf 1125: case '#': // comment start skipping
1126: if(end!=begin) {
1.206 paf 1127: if(!pc.string_start)
1128: pc.string_start=begin_pos;
1.194 paf 1129: // append piece till #
1.206 paf 1130: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 1131: }
1132: // fall into COMMENT lexical state [wait for \n]
1.206 paf 1133: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 1134: lexical_brackets_nestage=1;
1135: continue;
1.48 paf 1136: case '$':
1.206 paf 1137: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 1138: RC;
1139: case '^':
1.206 paf 1140: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1141: RC;
1142: case '(':
1143: lexical_brackets_nestage++;
1144: RC;
1.67 paf 1145: case '-':
1.206 paf 1146: switch(*pc.source) {
1.127 paf 1147: case 'f': // -f
1.67 paf 1148: skip_analized=1;
1149: result=FEXISTS;
1.127 paf 1150: goto break2;
1151: case 'd': // -d
1152: skip_analized=1;
1153: result=DEXISTS;
1154: goto break2;
1.191 paf 1155: default: // minus
1.67 paf 1156: result=c;
1.127 paf 1157: goto break2;
1158: }
1.67 paf 1159: goto break2;
1.173 paf 1160: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 1161: case '~':
1.48 paf 1162: case ';':
1163: RC;
1.193 paf 1164: case '&': case '|':
1.206 paf 1165: if(*pc.source==c) { // && ||
1.193 paf 1166: result=c=='&'?LAND:LOR;
1.67 paf 1167: skip_analized=1;
1.58 paf 1168: } else
1169: result=c;
1170: goto break2;
1.193 paf 1171: case '!':
1.206 paf 1172: switch(pc.source[0]) {
1.193 paf 1173: case '|': // !| !||
1174: skip_analized=1;
1.206 paf 1175: if(pc.source[1]=='|') {
1.193 paf 1176: skip_analized++;
1177: result=LXOR;
1178: } else
1179: result=NXOR;
1180: goto break2;
1181: case '=': // !=
1182: skip_analized=1;
1183: result=NNE;
1184: goto break2;
1185: }
1186: RC;
1.195 paf 1187:
1188: case '<': // <<, <=, <
1.206 paf 1189: switch(*pc.source) {
1.195 paf 1190: case '<': // <[<]
1191: skip_analized=1; result=NSL; break;
1192: case '=': // <[=]
1193: skip_analized=1; result=NLE; break;
1194: default: // <[]
1195: result=c; break;
1196: }
1197: goto break2;
1198: case '>': // >>, >=, >
1.206 paf 1199: switch(*pc.source) {
1.195 paf 1200: case '>': // >[>]
1201: skip_analized=1; result=NSR; break;
1202: case '=': // >[=]
1203: skip_analized=1; result=NGE; break;
1204: default: // >[]
1205: result=c; break;
1206: }
1207: goto break2;
1208: case '=': // ==
1.206 paf 1209: switch(*pc.source) {
1.195 paf 1210: case '=': // =[=]
1211: skip_analized=1; result=NEQ; break;
1212: default: // =[]
1213: result=c; break; // not used now
1214: }
1.58 paf 1215: goto break2;
1.195 paf 1216:
1.48 paf 1217: case '"':
1.206 paf 1218: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1219: RC;
1220: case '\'':
1.206 paf 1221: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1222: RC;
1.50 paf 1223: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1224: if(end==begin) // right after whitespace
1.206 paf 1225: if(isspace(pc.source[1])) {
1226: switch(*pc.source) {
1.117 paf 1227: // case '?': // ok [and bad cases, yacc would bark at them]
1228: case 't': // lt gt [et nt]
1229: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1230: skip_analized=1;
1231: goto break2;
1232: case 'e': // le ge ne [ee]
1233: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1234: skip_analized=1;
1235: goto break2;
1236: case 'q': // eq [lq gq nq]
1237: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1238: skip_analized=1;
1239: goto break2;
1240: }
1.67 paf 1241: }
1242: break;
1243: case 'i':
1244: if(end==begin) // right after whitespace
1.206 paf 1245: if(isspace(pc.source[1])) {
1246: switch(pc.source[0]) {
1.117 paf 1247: case 'n': // in
1.95 paf 1248: skip_analized=1;
1249: result=IN;
1250: goto break2;
1.117 paf 1251: case 's': // is
1.95 paf 1252: skip_analized=1;
1253: result=IS;
1254: goto break2;
1255: }
1.67 paf 1256: }
1257: break;
1258: case 'd':
1259: if(end==begin) // right after whitespace
1.206 paf 1260: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.225 misha 1261: switch(pc.source[2]){
1262: case ' ': case '\t': case '\n': case '"': case '\'': case '^': case '$': // non-quoted string without whitespace after 'def' is not allowed
1263: skip_analized=2;
1264: result=DEF;
1265: goto break2;
1266: }
1267: // error: incorrect char after 'def'
1.50 paf 1268: }
1.48 paf 1269: break;
1.216 paf 1270: case 't':
1271: if(end==begin) // right after whitespace
1.225 misha 1272: if(pc.source[0]=='r' && pc.source[1]=='u' && pc.source[2]=='e') { // true
1.216 paf 1273: skip_analized=3;
1274: result=LITERAL_TRUE;
1275: goto break2;
1276: }
1277: break;
1278: case 'f':
1279: if(end==begin) // right after whitespace
1.225 misha 1280: if(pc.source[0]=='a' && pc.source[1]=='l' && pc.source[2]=='s' && pc.source[3]=='e') { // false
1.216 paf 1281: skip_analized=4;
1282: result=LITERAL_FALSE;
1283: goto break2;
1284: }
1285: break;
1.48 paf 1286: case ' ': case '\t': case '\n':
1.63 paf 1287: if(end!=begin) { // there were a string after previous operator?
1288: result=0; // return that string
1289: goto break2;
1.48 paf 1290: }
1.63 paf 1291: // that's a leading|traling space or after-operator-space
1292: // ignoring it
1293: // reset piece 'begin' position & line
1.206 paf 1294: begin=pc.source; // after whitespace char
1295: begin_pos=pc.pos;
1.48 paf 1296: continue;
1.1 paf 1297: }
1298: break;
1.194 paf 1299: case LS_EXPRESSION_COMMENT:
1300: if(c=='(')
1301: lexical_brackets_nestage++;
1302:
1.206 paf 1303: switch(*pc.source) {
1.194 paf 1304: case '\n': case ')':
1.206 paf 1305: if(*pc.source==')')
1.194 paf 1306: if(--lexical_brackets_nestage!=0)
1307: continue;
1308:
1309: // skip comment
1.206 paf 1310: begin=pc.source;
1311: begin_pos=pc.pos;
1.194 paf 1312:
1.206 paf 1313: pop_LS(pc);
1.194 paf 1314: continue;
1315: }
1316: break;
1.1 paf 1317:
1.10 paf 1318: // VARIABLE GET/PUT/WITH
1.166 parser 1319: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1320: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1321: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1322: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1323: if(
1.206 paf 1324: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1325: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1326: // name in expr ends also before
1.48 paf 1327: switch(c) {
1.181 paf 1328: // expression minus
1.92 paf 1329: case '-':
1.181 paf 1330: // expression integer division
1331: case '\\':
1.206 paf 1332: pop_LS(pc);
1333: pc.ungetc();
1.48 paf 1334: result=EON;
1335: goto break2;
1336: }
1337: }
1.166 parser 1338: if(
1.206 paf 1339: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1340: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1341: // name already has ':', stop before next
1342: switch(c) {
1343: case ':':
1.206 paf 1344: pop_LS(pc);
1345: pc.ungetc();
1.142 parser 1346: result=EON;
1347: goto break2;
1348: }
1349: }
1.48 paf 1350: switch(c) {
1351: case 0:
1352: case ' ': case '\t': case '\n':
1353: case ';':
1.126 paf 1354: case ']': case '}': case ')':
1355: case '"': case '\'':
1.139 parser 1356: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.253 misha 1357: case '+': case '*': case '/': case '\\': case '%':
1.92 paf 1358: case '&': case '|':
1359: case '=': case '!':
1.99 paf 1360: // common delimiters
1.190 paf 1361: case ',': case '?': case '#':
1.220 paf 1362: // mysql column separators
1363: case '`':
1.139 parser 1364: // before call
1365: case '^':
1.206 paf 1366: pop_LS(pc);
1367: pc.ungetc();
1.13 paf 1368: result=EON;
1.1 paf 1369: goto break2;
1.48 paf 1370: case '[':
1.162 parser 1371: // $name.<[>code]
1.206 paf 1372: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1373: end[-1]=='$'/*was start of get*/ ||
1374: end[-1]==':'/*was class name delim */ ||
1375: end[-1]=='.'/*was name delim */
1.162 parser 1376: )) {
1.206 paf 1377: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1378: lexical_brackets_nestage=1;
1379: RC;
1380: }
1.206 paf 1381: pc.ls=LS_VAR_SQUARE;
1.1 paf 1382: lexical_brackets_nestage=1;
1.48 paf 1383: RC;
1384: case '{':
1385: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1386: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1387: } else {
1.206 paf 1388: pc.ls=LS_VAR_CURLY;
1.48 paf 1389: lexical_brackets_nestage=1;
1390: }
1.69 paf 1391:
1.48 paf 1392: RC;
1393: case '(':
1.206 paf 1394: pc.ls=LS_VAR_ROUND;
1.1 paf 1395: lexical_brackets_nestage=1;
1.48 paf 1396: RC;
1397: case '.': // name part delim
1398: case '$': // name part subvar
1.160 parser 1399: case ':': // class<:>name
1.166 parser 1400: // go to _WITHOUT_COLON state variant...
1.206 paf 1401: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1402: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1403: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1404: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1405: // ...stop before next ':'
1.48 paf 1406: RC;
1.1 paf 1407: }
1408: break;
1.48 paf 1409:
1.1 paf 1410: case LS_VAR_NAME_CURLY:
1.48 paf 1411: switch(c) {
1.162 parser 1412: case '[':
1.166 parser 1413: // ${name.<[>code]}
1.206 paf 1414: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1415: lexical_brackets_nestage=1;
1416: RC;
1.48 paf 1417: case '}': // ${name} finished, restoring LS
1.206 paf 1418: pop_LS(pc);
1.48 paf 1419: RC;
1420: case '.': // name part delim
1421: case '$': // name part subvar
1422: case ':': // ':name' or 'class:name'
1423: RC;
1.1 paf 1424: }
1425: break;
1.48 paf 1426:
1427: case LS_VAR_SQUARE:
1428: switch(c) {
1429: case '$':
1.206 paf 1430: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1431: RC;
1432: case '^':
1.206 paf 1433: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1434: RC;
1435: case ']':
1.1 paf 1436: if(--lexical_brackets_nestage==0) {
1.206 paf 1437: pop_LS(pc);
1.48 paf 1438: RC;
1.1 paf 1439: }
1.48 paf 1440: break;
1441: case ';': // operator_or_fmt;value delim
1442: RC;
1443: case '[':
1444: lexical_brackets_nestage++;
1445: break;
1.1 paf 1446: }
1447: break;
1.48 paf 1448:
1.1 paf 1449: case LS_VAR_CURLY:
1.48 paf 1450: switch(c) {
1451: case '$':
1.206 paf 1452: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1453: RC;
1454: case '^':
1.206 paf 1455: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1456: RC;
1457: case '}':
1.1 paf 1458: if(--lexical_brackets_nestage==0) {
1.206 paf 1459: pop_LS(pc);
1.48 paf 1460: RC;
1.1 paf 1461: }
1.48 paf 1462: break;
1463: case '{':
1.1 paf 1464: lexical_brackets_nestage++;
1.48 paf 1465: break;
1466: }
1.1 paf 1467: break;
1468:
1.10 paf 1469: // METHOD CALL
1.1 paf 1470: case LS_METHOD_NAME:
1.48 paf 1471: switch(c) {
1472: case '[':
1.166 parser 1473: // ^name.<[>code].xxx
1.206 paf 1474: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1475: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1476: end[-1]==':'/*was class name delim */ ||
1477: end[-1]=='.'/*was name delim */
1.162 parser 1478: )) {
1.206 paf 1479: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1480: lexical_brackets_nestage=1;
1481: RC;
1482: }
1.206 paf 1483: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1484: lexical_brackets_nestage=1;
1.48 paf 1485: RC;
1486: case '{':
1.206 paf 1487: pc.ls=LS_METHOD_CURLY;
1.1 paf 1488: lexical_brackets_nestage=1;
1.48 paf 1489: RC;
1.69 paf 1490: case '(':
1.206 paf 1491: pc.ls=LS_METHOD_ROUND;
1.69 paf 1492: lexical_brackets_nestage=1;
1493: RC;
1.48 paf 1494: case '.': // name part delim
1495: case '$': // name part subvar
1496: case ':': // ':name' or 'class:name'
1.170 parser 1497: case '^': // ^abc^xxx wrong. bailing out
1498: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1499: case ' ': // ^if ( wrong. bailing out
1.48 paf 1500: RC;
1.1 paf 1501: }
1502: break;
1.48 paf 1503:
1504: case LS_METHOD_SQUARE:
1505: switch(c) {
1506: case '$':
1.206 paf 1507: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1508: RC;
1509: case '^':
1.206 paf 1510: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1511: RC;
1512: case ';': // param delim
1513: RC;
1514: case ']':
1.1 paf 1515: if(--lexical_brackets_nestage==0) {
1.206 paf 1516: pc.ls=LS_METHOD_AFTER;
1.48 paf 1517: RC;
1.1 paf 1518: }
1.48 paf 1519: break;
1520: case '[':
1.1 paf 1521: lexical_brackets_nestage++;
1.48 paf 1522: break;
1523: }
1.1 paf 1524: break;
1.48 paf 1525:
1.1 paf 1526: case LS_METHOD_CURLY:
1.48 paf 1527: switch(c) {
1528: case '$':
1.206 paf 1529: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1530: RC;
1531: case '^':
1.206 paf 1532: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1533: RC;
1534: case ';': // param delim
1.48 paf 1535: RC;
1536: case '}':
1.1 paf 1537: if(--lexical_brackets_nestage==0) {
1.206 paf 1538: pc.ls=LS_METHOD_AFTER;
1.48 paf 1539: RC;
1.1 paf 1540: }
1.48 paf 1541: break;
1542: case '{':
1.1 paf 1543: lexical_brackets_nestage++;
1.48 paf 1544: break;
1545: }
1.209 paf 1546: if(pc.explicit_result && c)
1547: switch(c) {
1548: case '\n': case ' ': case '\t':
1549: begin=pc.source;
1550: begin_pos=pc.pos;
1551: continue; // skip it
1552: default:
1553: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
1554: goto break2;
1555: }
1.1 paf 1556: break;
1.48 paf 1557:
1.1 paf 1558: case LS_METHOD_AFTER:
1.69 paf 1559: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1560: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1561: lexical_brackets_nestage=1;
1.48 paf 1562: RC;
1.1 paf 1563: }
1.69 paf 1564: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1565: pc.ls=LS_METHOD_CURLY;
1.69 paf 1566: lexical_brackets_nestage=1;
1567: RC;
1568: }
1569: if(c=='(') {/* ]( }( )( */
1.206 paf 1570: pc.ls=LS_METHOD_ROUND;
1.1 paf 1571: lexical_brackets_nestage=1;
1.48 paf 1572: RC;
1.1 paf 1573: }
1.206 paf 1574: pop_LS(pc);
1575: pc.ungetc();
1.13 paf 1576: result=EON;
1.1 paf 1577: goto break2;
1578: }
1.9 paf 1579: if(c==0) {
1.1 paf 1580: result=-1;
1581: break;
1582: }
1583: }
1584:
1585: break2:
1.59 paf 1586: if(end!=begin) { // there is last piece?
1.258 misha 1587: if(c=='@' || c==0) // we are before LS_DEF_NAME or EOF?
1588: while(end!=begin && end[-1]=='\n') // trim all empty lines before LS_DEF_NAME and EOF
1.137 parser 1589: end--;
1.206 paf 1590: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1591: if(!pc.string_start)
1592: pc.string_start=begin_pos;
1.59 paf 1593: // append it
1.206 paf 1594: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1595: }
1.59 paf 1596: }
1.206 paf 1597: if(!pc.string.is_empty()) { // something accumulated?
1598: // create STRING value: array of OP_VALUE+origin+vstring
1599: *lvalp=VL(
1600: new VString(*new String(pc.string, String::L_CLEAN)),
1601: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1602: // new pieces storage
1.206 paf 1603: pc.string.clear();
1604: pc.string_start.clear();
1.58 paf 1605: // make current result be pending for next call, return STRING for now
1.206 paf 1606: pc.pending_state=result; result=STRING;
1.58 paf 1607: }
1.67 paf 1608: if(skip_analized) {
1.206 paf 1609: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1610: }
1.58 paf 1611: return result;
1.1 paf 1612: }
1613:
1.206 paf 1614: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1615: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1616: return 1;
1.110 paf 1617: }
1.1 paf 1618:
1.110 paf 1619: static void yyprint(FILE *file, int type, YYSTYPE value) {
1620: if(type==STRING)
1.206 paf 1621: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1622: }
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