Annotation of parser3/src/main/compile.y, revision 1.284
1.168 parser 1: %{
1.105 paf 2: /** @file
1.106 paf 3: Parser: compiler(lexical parser and grammar).
4:
1.274 moko 5: Copyright (c) 2001-2015 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:
1.284 ! moko 11: volatile const char * IDENT_COMPILE_Y = "$Id: compile.y,v 1.283 2016/07/20 16:36:49 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 YYDEBUG 1
1.271 moko 26: #define YYERROR_VERBOSE 1
27: #define yyerror(pc, msg) real_yyerror(pc, msg)
1.9 paf 28: #define YYPRINT(file, type, value) yyprint(file, type, value)
1.269 moko 29: #define YYMALLOC pa_malloc
30: #define YYFREE pa_free
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:
1.280 moko 44: #define CLASS_NAME "CLASS"
1.97 paf 45: #define USE_CONTROL_METHOD_NAME "USE"
1.226 misha 46: #define OPTIONS_CONTROL_METHOD_NAME "OPTIONS"
1.1 paf 47:
1.206 paf 48: // forwards
49:
1.264 moko 50: static int real_yyerror(Parse_control* pc, const char* s);
1.206 paf 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);
1.261 moko 56: static const VString vempty;
1.216 paf 57:
1.8 paf 58: // local convinient inplace typecast & var
1.205 paf 59: #undef PC
1.271 moko 60: #define PC (*pc)
1.206 paf 61: #undef POOL
1.114 paf 62: #define POOL (*PC.pool)
1.107 paf 63: #ifndef DOXYGEN
1.265 moko 64:
1.281 moko 65: #define CLASS_ADD if(PC.class_add()){ \
66: strncpy(PC.error, PC.cclass->type(), MAX_STRING/2); \
67: strcat(PC.error, " - class is already defined"); \
68: YYERROR; \
69: }
70:
71: #define PC_ERROR(header, value, footer){ \
72: strcpy(PC.error, header); \
73: strncat(PC.error, value, MAX_STRING/2); \
74: strcat(PC.error, footer); \
1.265 moko 75: }
76:
1.1 paf 77: %}
78:
1.271 moko 79: %pure-parser
80: %lex-param {Parse_control* pc}
81: %parse-param {Parse_control* pc}
1.1 paf 82:
1.13 paf 83: %token EON
1.4 paf 84: %token STRING
1.1 paf 85: %token BOGUS
1.55 paf 86:
1.58 paf 87: %token BAD_STRING_COMPARISON_OPERATOR
1.114 paf 88: %token BAD_HEX_LITERAL
1.171 parser 89: %token BAD_METHOD_DECL_START
1.193 paf 90: %token BAD_METHOD_PARAMETER_NAME_CHARACTER
1.58 paf 91:
1.59 paf 92: %token LAND "&&"
1.58 paf 93: %token LOR "||"
1.193 paf 94: %token LXOR "!||"
95: %token NXOR "!|"
1.58 paf 96:
97: %token NLE "<="
98: %token NGE ">="
99: %token NEQ "=="
100: %token NNE "!="
1.195 paf 101: %token NSL "<<"
102: %token NSR ">>"
1.58 paf 103:
104: %token SLT "lt"
105: %token SGT "gt"
106: %token SLE "le"
107: %token SGE "ge"
108: %token SEQ "eq"
109: %token SNE "ne"
110:
1.67 paf 111: %token DEF "def"
112: %token IN "in"
113: %token FEXISTS "-f"
1.127 paf 114: %token DEXISTS "-d"
1.95 paf 115: %token IS "is"
1.67 paf 116:
1.216 paf 117: %token LITERAL_TRUE "true"
118: %token LITERAL_FALSE "false"
119:
1.57 paf 120: /* logical */
1.193 paf 121: %left "!||"
1.57 paf 122: %left "||"
123: %left "&&"
1.131 paf 124: %left '<' '>' "<=" ">=" "lt" "gt" "le" "ge"
125: %left "==" "!=" "eq" "ne"
126: %left "is" "def" "in" "-f" "-d"
1.57 paf 127:
128: /* bitwise */
1.193 paf 129: %left "!|"
1.131 paf 130: %left '|'
131: %left '&'
1.202 paf 132: %left "<<" ">>"
1.57 paf 133:
1.56 paf 134: /* numerical */
1.202 paf 135: %left '+' '-'
136: %left '*' '/' '\\' '%'
137: %left NUNARY /* unary - + */
138:
139: /* out-of-group */
140: %left '~' /* bitwise */
141: %left '!' /* logical */
1.1 paf 142:
143: %%
1.195 paf 144: all:
1.10 paf 145: one_big_piece {
1.284 ! moko 146: Method* method=new Method(Method::CT_ANY, 0, 0 /*min, max numbered_params_count*/, 0 /*param_names*/, 0 /*local_names*/, $1 /*parser_code*/, 0 /*native_code*/, PC.cclass->is_vars_local());
1.251 misha 147: PC.cclass->set_method(PC.alias_method(main_method_name), method);
1.10 paf 148: }
149: | methods;
150:
151: methods: method | methods method;
152: one_big_piece: maybe_codes;
153:
1.34 paf 154: method: control_method | code_method;
155:
156: control_method: '@' STRING '\n'
1.132 paf 157: maybe_control_strings {
1.260 misha 158: const String& command=LA2S(*$2)->trim(String::TRIM_END);
1.34 paf 159: YYSTYPE strings_code=$4;
1.206 paf 160: if(strings_code->count()<1*OPERATIONS_PER_OPVALUE) {
1.281 moko 161: PC_ERROR("@", command.cstr(), " is empty");
1.37 paf 162: YYERROR;
163: }
1.74 paf 164: if(command==CLASS_NAME) {
1.206 paf 165: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.265 moko 166: CLASS_ADD;
1.73 paf 167: // new class' name
1.260 misha 168: const String& name=LA2S(*strings_code)->trim(String::TRIM_END);
1.73 paf 169: // creating the class
1.206 paf 170: VStateless_class* cclass=new VClass;
1.226 misha 171: PC.cclass_new=cclass;
1.275 moko 172: PC.cclass_new->set_type(name.cstr());
1.266 misha 173: PC.append=false;
1.73 paf 174: } else {
1.268 moko 175: strcpy(PC.error, "@" CLASS_NAME " must contain only one line with class name (contains more then one)");
1.34 paf 176: YYERROR;
177: }
1.130 paf 178: } else if(command==USE_CONTROL_METHOD_NAME) {
1.265 moko 179: CLASS_ADD;
1.273 moko 180: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE){
181: PC.request.use_file(PC.request.main_class, LA2S(*strings_code, i)->trim(String::TRIM_END),
182: PC.request.get_used_filename(PC.file_no), strings_code->get(i+1).origin);
183: }
1.130 paf 184: } else if(command==BASE_NAME) {
1.226 misha 185: if(PC.append){
1.281 moko 186: PC_ERROR("can't set base while appending methods to class '", PC.cclass->type(), "'");
1.226 misha 187: YYERROR;
188: }
1.265 moko 189: CLASS_ADD;
1.188 paf 190: if(PC.cclass->base_class()) { // already changed from default?
1.281 moko 191: PC_ERROR("class already have a base '", PC.cclass->base_class()->type(), "'");
1.130 paf 192: YYERROR;
193: }
1.206 paf 194: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.260 misha 195: const String& base_name=LA2S(*strings_code)->trim(String::TRIM_END);
1.283 moko 196: if(VStateless_class *base_class=PC.request.get_class(base_name)) {
1.206 paf 197: // @CLASS == @BASE sanity check
1.283 moko 198: if(PC.cclass==base_class) {
199: strcpy(PC.error, "@" CLASS_NAME " equals @" BASE_NAME);
1.206 paf 200: YYERROR;
201: }
1.283 moko 202: PC.cclass->get_class()->set_base(base_class);
1.206 paf 203: } else {
1.281 moko 204: PC_ERROR("'", base_name.cstr(), "': undefined class in @" BASE_NAME);
1.73 paf 205: YYERROR;
206: }
1.34 paf 207: } else {
1.268 moko 208: strcpy(PC.error, "@" BASE_NAME " must contain sole name");
1.34 paf 209: YYERROR;
210: }
1.223 misha 211: } else if(command==OPTIONS_CONTROL_METHOD_NAME) {
212: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE) {
1.260 misha 213: const String& option=LA2S(*strings_code, i)->trim(String::TRIM_END);
1.279 moko 214: if(option==Symbols::LOCALS_SYMBOL){
1.226 misha 215: PC.set_all_vars_local();
1.279 moko 216: } else if(option==Symbols::PARTIAL_SYMBOL){
1.230 misha 217: if(PC.cclass_new){
218: if(VStateless_class* existed=PC.get_existed_class(PC.cclass_new)){
219: if(!PC.reuse_existed_class(existed)){
1.281 moko 220: PC_ERROR("can't append methods to '", PC.cclass_new->type(), "' - the class wasn't marked as partial");
1.230 misha 221: YYERROR;
222: }
1.226 misha 223: } else {
1.256 misha 224: // marks the new class as partial. we will be able to add methods here later.
1.230 misha 225: PC.cclass_new->set_partial();
1.226 misha 226: }
1.230 misha 227: } else {
1.279 moko 228: strcpy(PC.error, "'partial' option should be used straight after @" CLASS_NAME);
1.226 misha 229: YYERROR;
230: }
1.279 moko 231: } else if(option==Symbols::STATIC_SYMBOL){
1.256 misha 232: PC.set_methods_call_type(Method::CT_STATIC);
1.279 moko 233: } else if(option==Symbols::DYNAMIC_SYMBOL){
1.256 misha 234: PC.set_methods_call_type(Method::CT_DYNAMIC);
1.223 misha 235: } else {
1.281 moko 236: PC_ERROR("'", option.cstr(), "' invalid option. valid options are 'partial', 'locals', 'static' and 'dynamic'");
1.223 misha 237: YYERROR;
238: }
239: }
1.130 paf 240: } else {
1.281 moko 241: PC_ERROR("'", command.cstr(), "' invalid special name. valid names are '" CLASS_NAME "', '" USE_CONTROL_METHOD_NAME "', '" BASE_NAME "' and '" OPTIONS_CONTROL_METHOD_NAME "'.");
1.130 paf 242: YYERROR;
1.34 paf 243: }
244: };
1.132 paf 245: maybe_control_strings: empty | control_strings;
1.259 misha 246: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2); };
1.37 paf 247: control_string: maybe_string '\n';
248: maybe_string: empty | STRING;
1.34 paf 249:
1.222 misha 250: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n' {
1.265 moko 251: CLASS_ADD;
1.208 paf 252: PC.explicit_result=false;
1.10 paf 253:
254: YYSTYPE params_names_code=$3;
1.206 paf 255: ArrayString* params_names=0;
256: if(int size=params_names_code->count()) {
257: params_names=new ArrayString;
258: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
259: *params_names+=LA2S(*params_names_code, i);
1.75 paf 260: }
1.10 paf 261:
262: YYSTYPE locals_names_code=$4;
1.206 paf 263: ArrayString* locals_names=0;
1.284 ! moko 264: bool all_vars_local=PC.cclass->is_vars_local();
! 265:
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);
1.279 moko 270: if(SYMBOLS_EQ(*local_name,RESULT_SYMBOL))
1.208 paf 271: PC.explicit_result=true;
1.279 moko 272: else if(SYMBOLS_EQ(*local_name,LOCALS_SYMBOL))
1.223 misha 273: all_vars_local=true;
1.208 paf 274: else
275: *locals_names+=local_name;
276: }
1.75 paf 277: }
1.10 paf 278:
1.208 paf 279: Method* method=new Method(
1.206 paf 280: //name,
1.257 misha 281: GetMethodCallType(PC, *$2),
1.81 paf 282: 0, 0/*min,max numbered_params_count*/,
1.76 paf 283: params_names, locals_names,
1.223 misha 284: 0/*to be filled later in next {} */, 0, all_vars_local);
1.221 misha 285:
1.208 paf 286: *reinterpret_cast<Method**>(&$$)=method;
1.222 misha 287: } maybe_codes {
1.251 misha 288: Method* method=reinterpret_cast<Method*>($7);
1.231 misha 289: // fill in the code
1.251 misha 290: method->parser_code=$8;
1.231 misha 291:
292: // register in class
293: const String& name=*LA2S(*$2);
1.251 misha 294: PC.cclass->set_method(PC.alias_method(name), method);
1.8 paf 295: };
1.10 paf 296:
297: maybe_bracketed_strings: empty | bracketed_maybe_strings;
1.259 misha 298: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2;};
1.10 paf 299: maybe_strings: empty | strings;
1.259 misha 300: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3); };
1.10 paf 301:
302: maybe_comment: empty | STRING;
1.1 paf 303:
304: /* codes */
305:
1.10 paf 306: maybe_codes: empty | codes;
307:
1.259 misha 308: codes: code | codes code { $$=$1; P(*$$, *$2); };
1.81 paf 309: code: write_string | action;
1.209 paf 310: action: get | put | call;
1.1 paf 311:
312: /* get */
313:
1.64 paf 314: get: get_value {
1.238 misha 315: $$=N();
316: YYSTYPE code=$1;
1.247 misha 317: size_t count=code->count();
1.245 misha 318:
1.235 misha 319: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.281 moko 320: if(count!=3 || !change_first(*code, OP::OP_VALUE__GET_ELEMENT, /*=>*/OP::OP_VALUE__GET_ELEMENT__WRITE) )
1.238 misha 321: #endif
1.247 misha 322:
1.245 misha 323: #ifdef OPTIMIZE_BYTECODE_GET_SELF_ELEMENT
1.281 moko 324: if(count!=3 || !change_first(*code, OP::OP_WITH_SELF__VALUE__GET_ELEMENT, /*=>*/OP::OP_WITH_SELF__VALUE__GET_ELEMENT__WRITE) )
1.245 misha 325: #endif
326:
1.239 misha 327: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
1.281 moko 328: if(count!=5 || !change_first(*code, OP::OP_GET_OBJECT_ELEMENT, /*=>*/OP::OP_GET_OBJECT_ELEMENT__WRITE) )
1.239 misha 329: #endif
330:
331: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
1.281 moko 332: if(count!=5 || !change_first(*code, OP::OP_GET_OBJECT_VAR_ELEMENT, /*=>*/OP::OP_GET_OBJECT_VAR_ELEMENT__WRITE) )
1.238 misha 333: #endif
1.267 misha 334:
335: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT__SPECIAL
1.281 moko 336: if(!change(*code, count-1/* last */, OP::OP_GET_ELEMENT__SPECIAL, /*=>*/OP::OP_GET_ELEMENT__SPECIAL__WRITE) )
1.267 misha 337: #endif
338:
1.247 misha 339: {
1.281 moko 340: change_or_append(*code, count-1 /* last */, OP::OP_GET_ELEMENT, /*=>*/OP::OP_GET_ELEMENT__WRITE, /*or */OP::OP_WRITE_VALUE ); /* value=pop; wcontext.write(value) */
1.246 misha 341: }
1.247 misha 342:
1.238 misha 343: P(*$$, *code);
1.1 paf 344: };
1.259 misha 345: get_value: '$' get_name_value { $$=$2; };
1.64 paf 346: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.259 misha 347: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2; };
1.44 paf 348: name_without_curly_rdive:
349: name_without_curly_rdive_read
350: | name_without_curly_rdive_class;
1.19 paf 351: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 352: $$=N();
1.238 misha 353: YYSTYPE diving_code=$1;
1.239 misha 354: size_t count=diving_code->count();
1.247 misha 355:
356: if(maybe_make_self(*$$, *diving_code, count)) {
357: // $self.
358: } else
1.239 misha 359:
360: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
1.247 misha 361: if(maybe_make_get_object_element(*$$, *diving_code, count)){
1.245 misha 362: // optimization for $object.field + ^object.method[
1.247 misha 363: } else
1.238 misha 364: #endif
1.239 misha 365:
366: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
1.247 misha 367: if(maybe_make_get_object_var_element(*$$, *diving_code, count)){
1.245 misha 368: // optimization for $object.$var
1.247 misha 369: } else
1.238 misha 370: #endif
1.239 misha 371:
372: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.281 moko 373: if(count>=4 && (*diving_code)[0].code==OP::OP_VALUE && (*diving_code)[3].code==OP::OP_GET_ELEMENT ){
1.248 misha 374: // optimization
1.239 misha 375: O(*$$,
1.247 misha 376: (PC.in_call_value && count==4)
1.239 misha 377: ? OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR // ^object[ : OP_VALUE+origin+string+OP_GET_ELEMENT => OP_VALUE__GET_ELEMENT_OR_OPERATOR+origin+string
378: : OP::OP_VALUE__GET_ELEMENT // $object : OP_VALUE+origin+string+OP_GET_ELEMENT => OP_VALUE__GET_ELEMENT+origin+string
379: );
380: P(*$$, *diving_code, 1/*offset*/, 2/*limit*/); // copy origin+value
1.247 misha 381: if(count>4)
382: P(*$$, *diving_code, 4); // copy tail
1.239 misha 383: } else {
384: O(*$$, OP::OP_WITH_READ); /* stack: starting context */
385: P(*$$, *diving_code);
386: }
1.233 misha 387: #else
1.247 misha 388: {
1.238 misha 389: O(*$$, OP::OP_WITH_READ); /* stack: starting context */
1.179 paf 390:
1.238 misha 391: // ^if OP_ELEMENT => ^if OP_ELEMENT_OR_OPERATOR
392: // optimized OP_VALUE+origin+string+OP_GET_ELEMENT. => OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
1.239 misha 393: if(PC.in_call_value && count==4)
394: diving_code->put(count-1, OP::OP_GET_ELEMENT_OR_OPERATOR);
1.206 paf 395: P(*$$, *diving_code);
1.239 misha 396: }
1.233 misha 397: #endif
1.22 paf 398: /* diving code; stack: current context */
1.1 paf 399: };
1.259 misha 400: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2); };
401: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2); };
1.1 paf 402:
403: /* put */
404:
1.81 paf 405: put: '$' name_expr_wdive construct {
1.241 misha 406: $$=N();
1.244 misha 407: #ifdef OPTIMIZE_BYTECODE_CONSTRUCT
408: if(maybe_optimize_construct(*$$, *$2, *$3)){
1.246 misha 409: // $a(expr), $.a(expr), $a[value], $.a[value], $self.a[value], $self.a(expr)
1.241 misha 410: } else
411: #endif
412: {
413: P(*$$, *$2); /* stack: context,name */
414: P(*$$, *$3); /* stack: context,name,constructor_value */
415: }
1.20 paf 416: };
1.44 paf 417: name_expr_wdive:
1.157 parser 418: name_expr_wdive_root
419: | name_expr_wdive_write
1.44 paf 420: | name_expr_wdive_class;
1.157 parser 421: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 422: $$=N();
1.238 misha 423: YYSTYPE diving_code=$1;
1.247 misha 424: size_t count=diving_code->count();
425:
426: if(maybe_make_self(*$$, *diving_code, count)) {
427: // $self.
428: } else
429: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.281 moko 430: if(count>=4 && (*diving_code)[0].code==OP::OP_VALUE && (*diving_code)[3].code==OP::OP_GET_ELEMENT ){
1.247 misha 431: O(*$$, OP::OP_WITH_ROOT__VALUE__GET_ELEMENT);
432: P(*$$, *diving_code, 1/*offset*/, 2/*limit*/); // copy origin+value
433: if(count>4)
434: P(*$$, *diving_code, 4); // tail
435: } else
436: #endif
437: {
1.229 misha 438: O(*$$, OP::OP_WITH_ROOT); /* stack: starting context */
1.206 paf 439: P(*$$, *diving_code);
1.23 paf 440: }
441: /* diving code; stack: current context */
1.156 parser 442: };
1.157 parser 443: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 444: $$=N();
1.229 misha 445: O(*$$, OP::OP_WITH_WRITE); /* stack: starting context */
1.206 paf 446: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 447: };
1.259 misha 448: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2); };
1.20 paf 449:
1.244 misha 450: construct:
1.163 parser 451: construct_square
452: | construct_round
453: | construct_curly
1.149 parser 454: ;
1.211 paf 455: construct_square: '[' {
456: // allow $result_or_other_variable[ letters here any time ]
457: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
458: } any_constructor_code_value {
1.213 paf 459: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.211 paf 460: } ']' {
1.149 parser 461: // stack: context, name
1.211 paf 462: $$=$3; // stack: context, name, value
1.229 misha 463: O(*$$, OP::OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 464: }
465: ;
1.149 parser 466: construct_round: '(' expr_value ')' {
1.206 paf 467: $$=N();
1.229 misha 468: O(*$$, OP::OP_PREPARE_TO_EXPRESSION);
1.149 parser 469: // stack: context, name
1.206 paf 470: P(*$$, *$2); // stack: context, name, value
1.229 misha 471: O(*$$, OP::OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 472: }
1.52 paf 473: ;
1.149 parser 474: construct_curly: '{' maybe_codes '}' {
475: // stack: context, name
1.206 paf 476: $$=N();
1.229 misha 477: OA(*$$, OP::OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 478: };
479:
1.55 paf 480: any_constructor_code_value:
1.261 moko 481: empty_value /* optimized $var[] case */
1.52 paf 482: | STRING /* optimized $var[STRING] case */
1.55 paf 483: | constructor_code_value /* $var[something complex] */
1.1 paf 484: ;
1.55 paf 485: constructor_code_value: constructor_code {
1.206 paf 486: $$=N();
1.229 misha 487: OA(*$$, OP::OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 488: /* some code that writes to that context */
489: /* context=pop; stack: context.value() */
1.1 paf 490: };
1.55 paf 491: constructor_code: codes__excluding_sole_str_literal;
1.259 misha 492: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2); };
1.27 paf 493:
1.1 paf 494: /* call */
495:
1.66 paf 496: call: call_value {
1.267 misha 497: size_t count=$1->count();
1.238 misha 498: #ifdef OPTIMIZE_BYTECODE_CUT_REM_OPERATOR
1.267 misha 499: if(count)
1.238 misha 500: #endif
501: {
502: $$=$1; /* stack: value */
1.281 moko 503: if(!change_first(*$$, OP::OP_CONSTRUCT_OBJECT, /*=>*/ OP::OP_CONSTRUCT_OBJECT__WRITE))
504: change_or_append(*$$, count-2 /* second last */, OP::OP_CALL, /*=>*/ OP::OP_CALL__WRITE, /*or */ OP::OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.238 misha 505: }
1.66 paf 506: };
1.177 paf 507: call_value: '^' {
1.281 moko 508: PC.in_call_value=true;
509: }
510: call_name {
511: PC.in_call_value=false;
512: }
513: store_params EON { /* ^field.$method{vasya} */
1.238 misha 514: #ifdef OPTIMIZE_BYTECODE_CUT_REM_OPERATOR
1.242 misha 515: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.238 misha 516: const String* operator_name=LA2S(*$3, 0, OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR);
1.242 misha 517: #else
518: const String* operator_name=LA2S(*$3, 1);
519: #endif
1.279 moko 520: if(operator_name && SYMBOLS_EQ(*operator_name,REM_SYMBOL)){
1.238 misha 521: $$=N();
522: } else
523: #endif
524: {
525: YYSTYPE params_code=$5;
526: if(params_code->count()==3) { // probably [] case. [OP::OP_VALUE+origin+Void]
527: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.261 moko 528: if(const String * string=value->get_string())
529: if(string->is_empty()) // value is empty string?
530: params_code=0; // ^zzz[] case. don't append lone empty param.
1.238 misha 531: }
532: /* stack: context, method_junction */
1.249 misha 533:
534: YYSTYPE var_code=$3;
535: if(
536: var_code->count()==8
1.282 moko 537: && ( (*var_code)[0].code==OP::OP_VALUE__GET_CLASS || (*var_code)[0].code==OP::OP_VALUE__GET_BASE_CLASS )
1.249 misha 538: && (*var_code)[3].code==OP::OP_PREPARE_TO_CONSTRUCT_OBJECT
539: && (*var_code)[4].code==OP::OP_VALUE
1.272 moko 540: #ifdef FEATURE_GET_ELEMENT4CALL
541: && (*var_code)[7].code==OP::OP_GET_ELEMENT4CALL
542: #else
1.249 misha 543: && (*var_code)[7].code==OP::OP_GET_ELEMENT
1.272 moko 544: #endif
1.249 misha 545: ){
1.267 misha 546: $$=N();
1.249 misha 547: O(*$$, OP::OP_CONSTRUCT_OBJECT);
548: P(*$$, *var_code, 1/*offset*/, 2/*limit*/); // class name
549: P(*$$, *var_code, 5/*offset*/, 2/*limit*/); // constructor name
550: OA(*$$, params_code);
551: } else
552: {
553: $$=var_code; /* with_xxx,diving code; stack: context,method_junction */
554: OA(*$$, OP::OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
555: }
1.238 misha 556: }
1.1 paf 557: };
558:
1.272 moko 559: call_name: name_without_curly_rdive {
560: #ifdef FEATURE_GET_ELEMENT4CALL
561: size_t count=$1->count();
562: if(count){
563: $$=$1;
564: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
565: !(count==5 && change_first(*$$, OP::OP_GET_OBJECT_ELEMENT, OP::OP_GET_OBJECT_ELEMENT4CALL)) &&
566: #endif
567: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
568: !(count==5 && change_first(*$$, OP::OP_GET_OBJECT_VAR_ELEMENT, OP::OP_GET_OBJECT_VAR_ELEMENT4CALL)) &&
569: #endif
570: !change(*$$, count-1, OP::OP_GET_ELEMENT, OP::OP_GET_ELEMENT4CALL);
571: }
572: #endif
573: };
1.38 paf 574:
1.259 misha 575: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2); };
1.69 paf 576: store_param:
577: store_square_param
578: | store_round_param
579: | store_curly_param
1.31 paf 580: ;
1.210 paf 581: store_square_param: '[' {
1.211 paf 582: // allow ^call[ letters here any time ]
1.210 paf 583: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
584: } store_code_param_parts {
1.213 paf 585: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.259 misha 586: } ']' {$$=$3;};
587: store_round_param: '(' store_expr_param_parts ')' {$$=$2;};
588: store_curly_param: '{' store_curly_param_parts '}' {$$=$2;};
1.69 paf 589: store_code_param_parts:
590: store_code_param_part
1.259 misha 591: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3); }
1.69 paf 592: ;
593: store_expr_param_parts:
594: store_expr_param_part
1.259 misha 595: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3); }
1.69 paf 596: ;
1.94 paf 597: store_curly_param_parts:
598: store_curly_param_part
1.259 misha 599: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3); }
1.94 paf 600: ;
1.120 paf 601: store_code_param_part: code_param_value {
1.32 paf 602: $$=$1;
1.120 paf 603: };
1.214 paf 604: store_expr_param_part: expr_value {
605: YYSTYPE expr_code=$1;
1.215 paf 606: if(expr_code->count()==3
1.234 misha 607: && (*expr_code)[0].code==OP::OP_VALUE) { // optimizing (double/bool/incidently 'string' too) case. [OP::OP_VALUE+origin+Double]. no evaluating
1.214 paf 608: $$=expr_code;
609: } else {
1.238 misha 610: YYSTYPE code=N();
1.229 misha 611: O(*code, OP::OP_PREPARE_TO_EXPRESSION);
1.214 paf 612: P(*code, *expr_code);
1.229 misha 613: O(*code, OP::OP_WRITE_EXPR_RESULT);
1.214 paf 614: $$=N();
1.229 misha 615: OA(*$$, OP::OP_EXPR_CODE__STORE_PARAM, code);
1.214 paf 616: }
1.69 paf 617: };
1.94 paf 618: store_curly_param_part: maybe_codes {
1.206 paf 619: $$=N();
1.229 misha 620: OA(*$$, OP::OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 621: };
1.120 paf 622: code_param_value:
1.261 moko 623: empty_value /* optimized [;...] case */
1.120 paf 624: | STRING /* optimized [STRING] case */
625: | constructor_code_value /* [something complex] */
626: ;
1.1 paf 627:
628: /* name */
629:
1.259 misha 630: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2); };
1.1 paf 631:
1.259 misha 632: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2); };
1.1 paf 633: name_step: name_advance1 '.';
634: name_advance1: name_expr_value {
1.177 paf 635: // we know that name_advance1 not called from ^xxx context
636: // so we'll not check for operator call possibility as we do in name_advance2
637:
1.1 paf 638: /* stack: context */
639: $$=$1; /* stack: context,name */
1.267 misha 640: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT__SPECIAL
641: O(*$$, is_special_element(*$$) ? OP::OP_GET_ELEMENT__SPECIAL : OP::OP_GET_ELEMENT);
642: #else
1.229 misha 643: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.267 misha 644: #endif
1.1 paf 645: };
646: name_advance2: name_expr_value {
647: /* stack: context */
648: $$=$1; /* stack: context,name */
1.267 misha 649: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT__SPECIAL
650: O(*$$, is_special_element(*$$) ? OP::OP_GET_ELEMENT__SPECIAL : OP::OP_GET_ELEMENT);
651: #else
1.229 misha 652: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.267 misha 653: #endif
1.1 paf 654: }
1.4 paf 655: | STRING BOGUS
1.1 paf 656: ;
657: name_expr_value:
1.4 paf 658: STRING /* subname_is_const */
1.1 paf 659: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 660: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 661: | name_square_code_value /* [codes] */
1.1 paf 662: ;
663: name_expr_subvar_value: '$' subvar_ref_name_rdive {
664: $$=$2;
1.229 misha 665: O(*$$, OP::OP_GET_ELEMENT);
1.1 paf 666: };
1.4 paf 667: name_expr_with_subvar_value: STRING subvar_get_writes {
1.238 misha 668: YYSTYPE code;
1.183 paf 669: {
1.206 paf 670: change_string_literal_to_write_string_literal(*(code=$1));
671: P(*code, *$2);
1.183 paf 672: }
1.206 paf 673: $$=N();
1.229 misha 674: OA(*$$, OP::OP_STRING_POOL, code);
1.1 paf 675: };
1.212 paf 676: name_square_code_value: '[' {
677: // allow $result_or_other_variable[ letters here any time ]
678: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
679: } codes {
1.213 paf 680: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.212 paf 681: } ']' {
1.206 paf 682: $$=N();
1.267 misha 683: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT__SPECIAL
684: if(!maybe_append_simple_diving_code(*$$, *$3))
685: #endif
686: {
1.281 moko 687: OA(*$$, OP::OP_OBJECT_POOL, $3); /* stack: empty write context */
688: /* some code that writes to that context */
689: /* context=pop; stack: context.value() */
1.267 misha 690: }
1.160 parser 691: };
1.154 parser 692: subvar_ref_name_rdive: STRING {
1.206 paf 693: $$=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: $$=$1; // stack: class name string
1.282 moko 709: OP::OPCODE code = OP::OP_VALUE__GET_CLASS;
1.206 paf 710: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
711: if(VStateless_class* base=PC.cclass->base_class()) {
1.275 moko 712: change_string_literal_value(*$$, *new String(base->type()));
1.189 paf 713: } else {
714: strcpy(PC.error, "no base class declared");
715: YYERROR;
716: }
1.282 moko 717: code = OP::OP_VALUE__GET_BASE_CLASS;
718: } else {
1.283 moko 719: // can't use get_class because it will call @autouse[] if the class wasn't loaded
720: VStateless_class* base=PC.request.classes().get(*LA2S(*$$));
721: if(base && PC.cclass->derived_from(*base))
1.282 moko 722: code = OP::OP_VALUE__GET_BASE_CLASS;
1.189 paf 723: }
1.238 misha 724: // optimized OP_VALUE+origin+string+OP_GET_CLASS => OP_VALUE__GET_CLASS+origin+string
1.282 moko 725: change_first(*$$, OP::OP_VALUE, code);
1.155 parser 726: };
727: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 728: $$=$1;
1.180 paf 729: if(!PC.in_call_value) {
1.154 parser 730: strcpy(PC.error, ":: not allowed here");
731: YYERROR;
732: }
1.229 misha 733: O(*$$, OP::OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 734: };
735:
1.53 paf 736:
1.56 paf 737: /* expr */
1.53 paf 738:
1.214 paf 739: expr_value: expr;
1.56 paf 740: expr:
1.214 paf 741: double_or_STRING
1.216 paf 742: | true_value
743: | false_value
1.64 paf 744: | get_value
1.66 paf 745: | call_value
1.259 misha 746: | '"' string_inside_quotes_value '"' { $$ = $2; }
747: | '\'' string_inside_quotes_value '\'' { $$ = $2; }
1.60 paf 748: | '(' expr ')' { $$ = $2; }
749: /* stack: operand // stack: @operand */
1.259 misha 750: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP::OP_NEG); }
751: | '+' expr %prec NUNARY { $$=$2; }
752: | '~' expr { $$=$2; O(*$$, OP::OP_INV); }
753: | '!' expr { $$=$2; O(*$$, OP::OP_NOT); }
754: | "def" expr { $$=$2; O(*$$, OP::OP_DEF); }
755: | "in" expr { $$=$2; O(*$$, OP::OP_IN); }
756: | "-f" expr { $$=$2; O(*$$, OP::OP_FEXISTS); }
757: | "-d" expr { $$=$2; O(*$$, OP::OP_DEXISTS); }
1.60 paf 758: /* stack: a,b // stack: a@b */
1.259 misha 759: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_SUB); }
760: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_ADD); }
761: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MUL); }
762: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_DIV); }
763: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MOD); }
764: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_INTDIV); }
765: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SL); }
766: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SR); }
767: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_AND); }
768: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_OR); }
769: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_XOR); }
770: | expr "&&" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_AND); }
771: | expr "||" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_OR); }
772: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_LOG_XOR); }
773: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LT); }
774: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GT); }
775: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LE); }
776: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GE); }
777: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_EQ); }
778: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_NE); }
779: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LT); }
780: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GT); }
781: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LE); }
782: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GE); }
783: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_EQ); }
784: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_NE); }
785: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_IS); }
1.56 paf 786: ;
1.214 paf 787:
788: double_or_STRING: STRING {
1.238 misha 789: // optimized OP_STRING => OP_VALUE for doubles
1.214 paf 790: maybe_change_string_literal_to_double_literal(*($$=$1));
791: };
1.55 paf 792:
1.65 paf 793: string_inside_quotes_value: maybe_codes {
1.238 misha 794: #ifdef OPTIMIZE_BYTECODE_STRING_POOL
795: // it brakes ^if(" 09 "){...}
796: YYSTYPE code=$1;
797: $$=N();
1.267 misha 798: if(code->count()==3 && change_first(*code, OP::OP_STRING__WRITE, OP::OP_VALUE)){
1.238 misha 799: // optimized OP_STRING__WRITE+origin+value => OP_VALUE+origin+value without starting OP_STRING_POOL
800: P(*$$, *code);
801: } else {
802: OA(*$$, OP::OP_STRING_POOL, code); /* stack: empty write context */
803: }
804: #else
1.206 paf 805: $$=N();
1.229 misha 806: OA(*$$, OP::OP_STRING_POOL, $1); /* stack: empty write context */
1.238 misha 807: #endif
1.183 paf 808: /* some code that writes to that context */
809: /* context=pop; stack: context.get_string() */
1.53 paf 810: };
1.1 paf 811:
1.27 paf 812: /* basics */
1.1 paf 813:
1.81 paf 814: write_string: STRING {
1.238 misha 815: // optimized OP_STRING+OP_WRITE_VALUE => OP_STRING__WRITE
1.259 misha 816: change_string_literal_to_write_string_literal(*($$=$1));
1.54 paf 817: };
818:
1.261 moko 819: empty_value: /* empty */ { $$=VL(/*we know that we will not change it*/const_cast<VString*>(&vempty), 0, 0, 0); }
1.259 misha 820: true_value: "true" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vtrue), 0, 0, 0); }
821: false_value: "false" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vfalse), 0, 0, 0); }
1.216 paf 822:
1.259 misha 823: empty: /* empty */ { $$=N(); };
1.1 paf 824:
825: %%
1.105 paf 826: #endif
1.1 paf 827:
828: /*
829: 000$111(2222)00
830: 000$111{3333}00
1.9 paf 831: $,^: push,=0
1.1 paf 832: 1:( { break=pop
833: 2:( ) pop
834: 3:{ } pop
835:
836: 000^111(2222)4444{33333}4000
1.9 paf 837: $,^: push,=0
1.1 paf 838: 1:( { break=pop
839: 2:( )=4
840: 3:{ }=4
841: 4:[^({]=pop
842: */
843:
1.206 paf 844: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
845: pc.source--;
846: if(pc.pos.col==0) {
847: --pc.pos.line; pc.pos.col=last_line_end_col;
848: } else
849: --pc.pos.col;
850:
851: }
852: static int yylex(YYSTYPE *lvalp, void *apc) {
853: register Parse_control& pc=*static_cast<Parse_control*>(apc);
854:
855: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 856: #define RC {result=c; goto break2; }
1.1 paf 857:
1.206 paf 858: register int c;
859: int result;
1.1 paf 860:
1.206 paf 861: if(pc.pending_state) {
862: result=pc.pending_state;
863: pc.pending_state=0;
1.1 paf 864: return result;
865: }
866:
1.206 paf 867: const char *begin=pc.source;
868: Pos begin_pos=pc.pos;
1.91 paf 869: const char *end;
1.67 paf 870: int skip_analized=0;
1.50 paf 871: while(true) {
1.206 paf 872: c=*(end=(pc.source++));
873: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 874:
1.208 paf 875: if(c=='\n')
1.206 paf 876: pc.pos_next_line();
1.208 paf 877: else
1.206 paf 878: pc.pos_next_c(c);
1.208 paf 879: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 880:
1.208 paf 881: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 882: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 883: // @SPECIAL
884: // ...
885: // @<here =
1.206 paf 886: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 887: } // continuing checks
1.206 paf 888: if(pc.ls==LS_USER) {
889: push_LS(pc, LS_DEF_NAME);
1.171 parser 890: RC;
1.175 paf 891: } else // @ in first column inside some code [when could that be?]
1.171 parser 892: result=BAD_METHOD_DECL_START;
893: goto break2;
1.209 paf 894: }
895: if(c=='^') {
1.206 paf 896: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 897: // handle after-method situation
1.206 paf 898: pop_LS(pc);
1.203 paf 899: result=EON;
900: skip_analized=-1; // return to punctuation afterwards to assure it's literality
901: goto break2;
902: }
1.206 paf 903: switch(pc.ls) {
1.169 parser 904: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
905: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
906: case LS_VAR_NAME_SIMPLE_WITH_COLON:
907: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
908: case LS_VAR_NAME_CURLY:
909: case LS_METHOD_NAME:
1.194 paf 910: case LS_USER_COMMENT:
1.169 parser 911: case LS_DEF_COMMENT:
912: // no literals in names, please
913: break;
914: default:
1.206 paf 915: switch(*pc.source) {
1.165 parser 916: // ^escaping some punctuators
1.228 misha 917: case '^': case '$': case ';': case '@':
1.126 paf 918: case '(': case ')':
1.48 paf 919: case '[': case ']':
920: case '{': case '}':
1.172 parser 921: case '"': case ':':
1.40 paf 922: if(end!=begin) {
1.206 paf 923: if(!pc.string_start)
924: pc.string_start=begin_pos;
1.40 paf 925: // append piece till ^
1.206 paf 926: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 927: }
1.63 paf 928: // reset piece 'begin' position & line
1.206 paf 929: begin=pc.source; // ->punctuation
930: begin_pos=pc.pos;
1.203 paf 931: // skip over _ after ^
1.206 paf 932: pc.source++; pc.pos.col++;
1.203 paf 933: // skip analysis = forced literal
934: continue;
1.114 paf 935:
936: // converting ^#HH into char(hex(HH))
937: case '#':
938: if(end!=begin) {
1.206 paf 939: if(!pc.string_start)
940: pc.string_start=begin_pos;
1.114 paf 941: // append piece till ^
1.206 paf 942: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 943: }
944: // #HH ?
1.228 misha 945: if(pc.source[1] && isxdigit(pc.source[1]) && pc.source[2] && isxdigit(pc.source[2])) {
1.218 paf 946: char c=(char)(
1.206 paf 947: hex_value[(unsigned char)pc.source[1]]*0x10+
1.218 paf 948: hex_value[(unsigned char)pc.source[2]]);
1.206 paf 949: if(c==0) {
1.114 paf 950: result=BAD_HEX_LITERAL;
951: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
952: }
953: // append char(hex(HH))
1.206 paf 954: pc.string.append(c);
1.114 paf 955: // skip over ^#HH
1.206 paf 956: pc.source+=3;
957: pc.pos.col+=3;
1.114 paf 958: // reset piece 'begin' position & line
1.206 paf 959: begin=pc.source; // ->after ^#HH
960: begin_pos=pc.pos;
1.203 paf 961: // skip analysis = forced literal
1.114 paf 962: continue;
963: }
1.228 misha 964: // just escaped char
965: // reset piece 'begin' position & line
966: begin=pc.source;
967: begin_pos=pc.pos;
968: // skip over _ after ^
969: pc.source++; pc.pos.col++;
970: // skip analysis = forced literal
971: continue;
1.1 paf 972: }
1.169 parser 973: break;
1.203 paf 974: }
1.169 parser 975: }
1.113 paf 976: // #comment start skipping
1.206 paf 977: if(c=='#' && pc.pos.col==1) {
1.112 paf 978: if(end!=begin) {
1.206 paf 979: if(!pc.string_start)
980: pc.string_start=begin_pos;
1.112 paf 981: // append piece till #
1.206 paf 982: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 983: }
984: // fall into COMMENT lexical state [wait for \n]
1.206 paf 985: push_LS(pc, LS_USER_COMMENT);
1.175 paf 986: continue;
1.112 paf 987: }
1.206 paf 988: switch(pc.ls) {
1.10 paf 989:
990: // USER'S = NOT OURS
1.1 paf 991: case LS_USER:
1.206 paf 992: case LS_NAME_SQUARE_PART: // name.[here].xxx
993: if(pc.trim_bof)
1.153 parser 994: switch(c) {
995: case '\n': case ' ': case '\t':
1.206 paf 996: begin=pc.source;
997: begin_pos=pc.pos;
1.152 parser 998: continue; // skip it
1.153 parser 999: default:
1.206 paf 1000: pc.trim_bof=false;
1.152 parser 1001: }
1.48 paf 1002: switch(c) {
1003: case '$':
1.206 paf 1004: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1005: RC;
1006: case '^':
1.206 paf 1007: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1008: RC;
1.166 parser 1009: case ']':
1.206 paf 1010: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 1011: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 1012: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 1013: RC;
1014: }
1.160 parser 1015: break;
1.166 parser 1016: case '[': // $name.[co<[>de]
1.206 paf 1017: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 1018: lexical_brackets_nestage++;
1.161 parser 1019: break;
1.112 paf 1020: }
1.209 paf 1021: if(pc.explicit_result && c)
1022: switch(c) {
1.276 moko 1023: default:
1024: pc.string.append(c);
1.209 paf 1025: case '\n': case ' ': case '\t':
1026: begin=pc.source;
1027: begin_pos=pc.pos;
1.276 moko 1028: continue;
1.209 paf 1029: }
1.112 paf 1030: break;
1031:
1032: // #COMMENT
1.194 paf 1033: case LS_USER_COMMENT:
1.112 paf 1034: if(c=='\n') {
1035: // skip comment
1.206 paf 1036: begin=pc.source;
1037: begin_pos=pc.pos;
1.112 paf 1038:
1.206 paf 1039: pop_LS(pc);
1.112 paf 1040: continue;
1.1 paf 1041: }
1.48 paf 1042: break;
1043:
1044: // STRING IN EXPRESSION
1.145 parser 1045: case LS_EXPRESSION_STRING_QUOTED:
1046: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 1047: switch(c) {
1048: case '"':
1.145 parser 1049: case '\'':
1050: if(
1.270 moko 1051: (pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"') ||
1052: (pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') ) {
1.206 paf 1053: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 1054: RC;
1055: }
1056: break;
1.48 paf 1057: case '$':
1.206 paf 1058: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1059: RC;
1060: case '^':
1.206 paf 1061: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1062: RC;
1.10 paf 1063: }
1064: break;
1065:
1066: // METHOD DEFINITION
1067: case LS_DEF_NAME:
1.48 paf 1068: switch(c) {
1069: case '[':
1.206 paf 1070: pc.ls=LS_DEF_PARAMS;
1.48 paf 1071: RC;
1072: case '\n':
1.206 paf 1073: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 1074: RC;
1.10 paf 1075: }
1076: break;
1.48 paf 1077:
1.10 paf 1078: case LS_DEF_PARAMS:
1.48 paf 1079: switch(c) {
1.192 paf 1080: case '$': // common error
1.193 paf 1081: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
1082: goto break2;
1.48 paf 1083: case ';':
1084: RC;
1085: case ']':
1.206 paf 1086: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 1087: RC;
1.49 paf 1088: case '\n': // wrong. bailing out
1.206 paf 1089: pop_LS(pc);
1.48 paf 1090: RC;
1.10 paf 1091: }
1092: break;
1.48 paf 1093:
1.10 paf 1094: case LS_DEF_LOCALS:
1.48 paf 1095: switch(c) {
1096: case '[':
1097: case ';':
1098: RC;
1099: case ']':
1.206 paf 1100: pc.ls=LS_DEF_COMMENT;
1.48 paf 1101: RC;
1102: case '\n': // wrong. bailing out
1.206 paf 1103: pop_LS(pc);
1.48 paf 1104: RC;
1.10 paf 1105: }
1106: break;
1.48 paf 1107:
1.10 paf 1108: case LS_DEF_COMMENT:
1109: if(c=='\n') {
1.206 paf 1110: pop_LS(pc);
1.48 paf 1111: RC;
1.37 paf 1112: }
1113: break;
1114:
1.48 paf 1115: case LS_DEF_SPECIAL_BODY:
1.175 paf 1116: if(c=='\n')
1.48 paf 1117: RC;
1118: break;
1119:
1120: // (EXPRESSION)
1.69 paf 1121: case LS_VAR_ROUND:
1122: case LS_METHOD_ROUND:
1.48 paf 1123: switch(c) {
1124: case ')':
1.270 moko 1125: if(--lexical_brackets_nestage==0) {
1.206 paf 1126: if(pc.ls==LS_METHOD_ROUND) // method round param ended
1127: pc.ls=LS_METHOD_AFTER; // look for method end
1128: else // pc.ls==LS_VAR_ROUND // variable constructor ended
1129: pop_LS(pc); // return to normal life
1.270 moko 1130: }
1.48 paf 1131: RC;
1.194 paf 1132: case '#': // comment start skipping
1133: if(end!=begin) {
1.206 paf 1134: if(!pc.string_start)
1135: pc.string_start=begin_pos;
1.194 paf 1136: // append piece till #
1.206 paf 1137: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 1138: }
1139: // fall into COMMENT lexical state [wait for \n]
1.206 paf 1140: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 1141: lexical_brackets_nestage=1;
1142: continue;
1.48 paf 1143: case '$':
1.206 paf 1144: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 1145: RC;
1146: case '^':
1.206 paf 1147: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1148: RC;
1149: case '(':
1150: lexical_brackets_nestage++;
1151: RC;
1.67 paf 1152: case '-':
1.206 paf 1153: switch(*pc.source) {
1.127 paf 1154: case 'f': // -f
1.67 paf 1155: skip_analized=1;
1156: result=FEXISTS;
1.127 paf 1157: goto break2;
1158: case 'd': // -d
1159: skip_analized=1;
1160: result=DEXISTS;
1161: goto break2;
1.191 paf 1162: default: // minus
1.67 paf 1163: result=c;
1.127 paf 1164: goto break2;
1165: }
1.67 paf 1166: goto break2;
1.173 paf 1167: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 1168: case '~':
1.48 paf 1169: case ';':
1170: RC;
1.193 paf 1171: case '&': case '|':
1.206 paf 1172: if(*pc.source==c) { // && ||
1.193 paf 1173: result=c=='&'?LAND:LOR;
1.67 paf 1174: skip_analized=1;
1.58 paf 1175: } else
1176: result=c;
1177: goto break2;
1.193 paf 1178: case '!':
1.206 paf 1179: switch(pc.source[0]) {
1.193 paf 1180: case '|': // !| !||
1181: skip_analized=1;
1.206 paf 1182: if(pc.source[1]=='|') {
1.193 paf 1183: skip_analized++;
1184: result=LXOR;
1185: } else
1186: result=NXOR;
1187: goto break2;
1188: case '=': // !=
1189: skip_analized=1;
1190: result=NNE;
1191: goto break2;
1192: }
1193: RC;
1.195 paf 1194:
1195: case '<': // <<, <=, <
1.206 paf 1196: switch(*pc.source) {
1.195 paf 1197: case '<': // <[<]
1198: skip_analized=1; result=NSL; break;
1199: case '=': // <[=]
1200: skip_analized=1; result=NLE; break;
1201: default: // <[]
1202: result=c; break;
1203: }
1204: goto break2;
1205: case '>': // >>, >=, >
1.206 paf 1206: switch(*pc.source) {
1.195 paf 1207: case '>': // >[>]
1208: skip_analized=1; result=NSR; break;
1209: case '=': // >[=]
1210: skip_analized=1; result=NGE; break;
1211: default: // >[]
1212: result=c; break;
1213: }
1214: goto break2;
1215: case '=': // ==
1.206 paf 1216: switch(*pc.source) {
1.195 paf 1217: case '=': // =[=]
1218: skip_analized=1; result=NEQ; break;
1219: default: // =[]
1220: result=c; break; // not used now
1221: }
1.58 paf 1222: goto break2;
1.195 paf 1223:
1.48 paf 1224: case '"':
1.206 paf 1225: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1226: RC;
1227: case '\'':
1.206 paf 1228: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1229: RC;
1.50 paf 1230: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1231: if(end==begin) // right after whitespace
1.206 paf 1232: if(isspace(pc.source[1])) {
1233: switch(*pc.source) {
1.117 paf 1234: // case '?': // ok [and bad cases, yacc would bark at them]
1235: case 't': // lt gt [et nt]
1236: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1237: skip_analized=1;
1238: goto break2;
1239: case 'e': // le ge ne [ee]
1240: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1241: skip_analized=1;
1242: goto break2;
1243: case 'q': // eq [lq gq nq]
1244: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1245: skip_analized=1;
1246: goto break2;
1247: }
1.67 paf 1248: }
1249: break;
1250: case 'i':
1251: if(end==begin) // right after whitespace
1.206 paf 1252: if(isspace(pc.source[1])) {
1253: switch(pc.source[0]) {
1.117 paf 1254: case 'n': // in
1.95 paf 1255: skip_analized=1;
1256: result=IN;
1257: goto break2;
1.117 paf 1258: case 's': // is
1.95 paf 1259: skip_analized=1;
1260: result=IS;
1261: goto break2;
1262: }
1.67 paf 1263: }
1264: break;
1265: case 'd':
1266: if(end==begin) // right after whitespace
1.206 paf 1267: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.225 misha 1268: switch(pc.source[2]){
1269: case ' ': case '\t': case '\n': case '"': case '\'': case '^': case '$': // non-quoted string without whitespace after 'def' is not allowed
1270: skip_analized=2;
1271: result=DEF;
1272: goto break2;
1273: }
1274: // error: incorrect char after 'def'
1.50 paf 1275: }
1.48 paf 1276: break;
1.216 paf 1277: case 't':
1278: if(end==begin) // right after whitespace
1.225 misha 1279: if(pc.source[0]=='r' && pc.source[1]=='u' && pc.source[2]=='e') { // true
1.216 paf 1280: skip_analized=3;
1281: result=LITERAL_TRUE;
1282: goto break2;
1283: }
1284: break;
1285: case 'f':
1286: if(end==begin) // right after whitespace
1.225 misha 1287: if(pc.source[0]=='a' && pc.source[1]=='l' && pc.source[2]=='s' && pc.source[3]=='e') { // false
1.216 paf 1288: skip_analized=4;
1289: result=LITERAL_FALSE;
1290: goto break2;
1291: }
1292: break;
1.48 paf 1293: case ' ': case '\t': case '\n':
1.63 paf 1294: if(end!=begin) { // there were a string after previous operator?
1295: result=0; // return that string
1296: goto break2;
1.48 paf 1297: }
1.63 paf 1298: // that's a leading|traling space or after-operator-space
1299: // ignoring it
1300: // reset piece 'begin' position & line
1.206 paf 1301: begin=pc.source; // after whitespace char
1302: begin_pos=pc.pos;
1.48 paf 1303: continue;
1.1 paf 1304: }
1305: break;
1.194 paf 1306: case LS_EXPRESSION_COMMENT:
1307: if(c=='(')
1308: lexical_brackets_nestage++;
1309:
1.206 paf 1310: switch(*pc.source) {
1.194 paf 1311: case '\n': case ')':
1.206 paf 1312: if(*pc.source==')')
1.194 paf 1313: if(--lexical_brackets_nestage!=0)
1314: continue;
1315:
1316: // skip comment
1.206 paf 1317: begin=pc.source;
1318: begin_pos=pc.pos;
1.194 paf 1319:
1.206 paf 1320: pop_LS(pc);
1.194 paf 1321: continue;
1322: }
1323: break;
1.1 paf 1324:
1.10 paf 1325: // VARIABLE GET/PUT/WITH
1.166 parser 1326: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1327: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1328: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1329: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1330: if(
1.206 paf 1331: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1332: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1333: // name in expr ends also before
1.48 paf 1334: switch(c) {
1.181 paf 1335: // expression minus
1.92 paf 1336: case '-':
1.181 paf 1337: // expression integer division
1338: case '\\':
1.206 paf 1339: pop_LS(pc);
1340: pc.ungetc();
1.48 paf 1341: result=EON;
1342: goto break2;
1343: }
1344: }
1.166 parser 1345: if(
1.206 paf 1346: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1347: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1348: // name already has ':', stop before next
1349: switch(c) {
1350: case ':':
1.206 paf 1351: pop_LS(pc);
1352: pc.ungetc();
1.142 parser 1353: result=EON;
1354: goto break2;
1355: }
1356: }
1.48 paf 1357: switch(c) {
1358: case 0:
1359: case ' ': case '\t': case '\n':
1360: case ';':
1.126 paf 1361: case ']': case '}': case ')':
1362: case '"': case '\'':
1.139 parser 1363: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.253 misha 1364: case '+': case '*': case '/': case '\\': case '%':
1.92 paf 1365: case '&': case '|':
1366: case '=': case '!':
1.99 paf 1367: // common delimiters
1.190 paf 1368: case ',': case '?': case '#':
1.220 paf 1369: // mysql column separators
1370: case '`':
1.139 parser 1371: // before call
1372: case '^':
1.206 paf 1373: pop_LS(pc);
1374: pc.ungetc();
1.13 paf 1375: result=EON;
1.1 paf 1376: goto break2;
1.48 paf 1377: case '[':
1.162 parser 1378: // $name.<[>code]
1.206 paf 1379: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1380: end[-1]=='$'/*was start of get*/ ||
1381: end[-1]==':'/*was class name delim */ ||
1382: end[-1]=='.'/*was name delim */
1.162 parser 1383: )) {
1.206 paf 1384: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1385: lexical_brackets_nestage=1;
1386: RC;
1387: }
1.206 paf 1388: pc.ls=LS_VAR_SQUARE;
1.1 paf 1389: lexical_brackets_nestage=1;
1.48 paf 1390: RC;
1391: case '{':
1392: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1393: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1394: } else {
1.206 paf 1395: pc.ls=LS_VAR_CURLY;
1.48 paf 1396: lexical_brackets_nestage=1;
1397: }
1.69 paf 1398:
1.48 paf 1399: RC;
1400: case '(':
1.206 paf 1401: pc.ls=LS_VAR_ROUND;
1.1 paf 1402: lexical_brackets_nestage=1;
1.48 paf 1403: RC;
1404: case '.': // name part delim
1405: case '$': // name part subvar
1.160 parser 1406: case ':': // class<:>name
1.166 parser 1407: // go to _WITHOUT_COLON state variant...
1.206 paf 1408: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1409: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1410: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1411: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1412: // ...stop before next ':'
1.48 paf 1413: RC;
1.1 paf 1414: }
1415: break;
1.48 paf 1416:
1.1 paf 1417: case LS_VAR_NAME_CURLY:
1.48 paf 1418: switch(c) {
1.162 parser 1419: case '[':
1.166 parser 1420: // ${name.<[>code]}
1.206 paf 1421: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1422: lexical_brackets_nestage=1;
1423: RC;
1.48 paf 1424: case '}': // ${name} finished, restoring LS
1.206 paf 1425: pop_LS(pc);
1.48 paf 1426: RC;
1427: case '.': // name part delim
1428: case '$': // name part subvar
1429: case ':': // ':name' or 'class:name'
1430: RC;
1.1 paf 1431: }
1432: break;
1.48 paf 1433:
1434: case LS_VAR_SQUARE:
1435: switch(c) {
1436: case '$':
1.206 paf 1437: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1438: RC;
1439: case '^':
1.206 paf 1440: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1441: RC;
1442: case ']':
1.1 paf 1443: if(--lexical_brackets_nestage==0) {
1.206 paf 1444: pop_LS(pc);
1.48 paf 1445: RC;
1.1 paf 1446: }
1.48 paf 1447: break;
1448: case ';': // operator_or_fmt;value delim
1449: RC;
1450: case '[':
1451: lexical_brackets_nestage++;
1452: break;
1.1 paf 1453: }
1454: break;
1.48 paf 1455:
1.1 paf 1456: case LS_VAR_CURLY:
1.48 paf 1457: switch(c) {
1458: case '$':
1.206 paf 1459: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1460: RC;
1461: case '^':
1.206 paf 1462: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1463: RC;
1464: case '}':
1.1 paf 1465: if(--lexical_brackets_nestage==0) {
1.206 paf 1466: pop_LS(pc);
1.48 paf 1467: RC;
1.1 paf 1468: }
1.48 paf 1469: break;
1470: case '{':
1.1 paf 1471: lexical_brackets_nestage++;
1.48 paf 1472: break;
1473: }
1.1 paf 1474: break;
1475:
1.10 paf 1476: // METHOD CALL
1.1 paf 1477: case LS_METHOD_NAME:
1.48 paf 1478: switch(c) {
1479: case '[':
1.166 parser 1480: // ^name.<[>code].xxx
1.206 paf 1481: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1482: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1483: end[-1]==':'/*was class name delim */ ||
1484: end[-1]=='.'/*was name delim */
1.162 parser 1485: )) {
1.206 paf 1486: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1487: lexical_brackets_nestage=1;
1488: RC;
1489: }
1.206 paf 1490: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1491: lexical_brackets_nestage=1;
1.48 paf 1492: RC;
1493: case '{':
1.206 paf 1494: pc.ls=LS_METHOD_CURLY;
1.1 paf 1495: lexical_brackets_nestage=1;
1.48 paf 1496: RC;
1.69 paf 1497: case '(':
1.206 paf 1498: pc.ls=LS_METHOD_ROUND;
1.69 paf 1499: lexical_brackets_nestage=1;
1500: RC;
1.48 paf 1501: case '.': // name part delim
1502: case '$': // name part subvar
1503: case ':': // ':name' or 'class:name'
1.170 parser 1504: case '^': // ^abc^xxx wrong. bailing out
1505: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1506: case ' ': // ^if ( wrong. bailing out
1.48 paf 1507: RC;
1.1 paf 1508: }
1509: break;
1.48 paf 1510:
1511: case LS_METHOD_SQUARE:
1512: switch(c) {
1513: case '$':
1.206 paf 1514: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1515: RC;
1516: case '^':
1.206 paf 1517: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1518: RC;
1519: case ';': // param delim
1520: RC;
1521: case ']':
1.1 paf 1522: if(--lexical_brackets_nestage==0) {
1.206 paf 1523: pc.ls=LS_METHOD_AFTER;
1.48 paf 1524: RC;
1.1 paf 1525: }
1.48 paf 1526: break;
1527: case '[':
1.1 paf 1528: lexical_brackets_nestage++;
1.48 paf 1529: break;
1530: }
1.1 paf 1531: break;
1.48 paf 1532:
1.1 paf 1533: case LS_METHOD_CURLY:
1.48 paf 1534: switch(c) {
1535: case '$':
1.206 paf 1536: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1537: RC;
1538: case '^':
1.206 paf 1539: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1540: RC;
1541: case ';': // param delim
1.48 paf 1542: RC;
1543: case '}':
1.1 paf 1544: if(--lexical_brackets_nestage==0) {
1.206 paf 1545: pc.ls=LS_METHOD_AFTER;
1.48 paf 1546: RC;
1.1 paf 1547: }
1.48 paf 1548: break;
1549: case '{':
1.1 paf 1550: lexical_brackets_nestage++;
1.48 paf 1551: break;
1552: }
1.209 paf 1553: if(pc.explicit_result && c)
1554: switch(c) {
1.276 moko 1555: default:
1556: pc.string.append(c);
1.209 paf 1557: case '\n': case ' ': case '\t':
1558: begin=pc.source;
1559: begin_pos=pc.pos;
1.276 moko 1560: continue;
1.209 paf 1561: }
1.1 paf 1562: break;
1.48 paf 1563:
1.1 paf 1564: case LS_METHOD_AFTER:
1.69 paf 1565: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1566: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1567: lexical_brackets_nestage=1;
1.48 paf 1568: RC;
1.281 moko 1569: }
1.69 paf 1570: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1571: pc.ls=LS_METHOD_CURLY;
1.69 paf 1572: lexical_brackets_nestage=1;
1573: RC;
1.281 moko 1574: }
1.69 paf 1575: if(c=='(') {/* ]( }( )( */
1.206 paf 1576: pc.ls=LS_METHOD_ROUND;
1.1 paf 1577: lexical_brackets_nestage=1;
1.48 paf 1578: RC;
1.281 moko 1579: }
1.206 paf 1580: pop_LS(pc);
1581: pc.ungetc();
1.13 paf 1582: result=EON;
1.1 paf 1583: goto break2;
1584: }
1.9 paf 1585: if(c==0) {
1.1 paf 1586: result=-1;
1587: break;
1588: }
1589: }
1590:
1591: break2:
1.59 paf 1592: if(end!=begin) { // there is last piece?
1.258 misha 1593: if(c=='@' || c==0) // we are before LS_DEF_NAME or EOF?
1594: while(end!=begin && end[-1]=='\n') // trim all empty lines before LS_DEF_NAME and EOF
1.137 parser 1595: end--;
1.206 paf 1596: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1597: if(!pc.string_start)
1598: pc.string_start=begin_pos;
1.59 paf 1599: // append it
1.206 paf 1600: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1601: }
1.59 paf 1602: }
1.206 paf 1603: if(!pc.string.is_empty()) { // something accumulated?
1604: // create STRING value: array of OP_VALUE+origin+vstring
1.278 moko 1605: #ifdef SYMBOLS_CACHING
1606: Value *lookup=symbols->get(pc.string);
1607: #else
1608: Value *lookup=0;
1609: #endif
1.281 moko 1610: *lvalp=VL(lookup ? lookup : new VString(*new String(pc.string, String::L_CLEAN)), pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1611: // new pieces storage
1.206 paf 1612: pc.string.clear();
1613: pc.string_start.clear();
1.58 paf 1614: // make current result be pending for next call, return STRING for now
1.206 paf 1615: pc.pending_state=result; result=STRING;
1.58 paf 1616: }
1.67 paf 1617: if(skip_analized) {
1.206 paf 1618: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1619: }
1.58 paf 1620: return result;
1.1 paf 1621: }
1622:
1.264 moko 1623: static int real_yyerror(Parse_control *pc, const char *s) { // Called by yyparse on error
1.281 moko 1624: strncpy(PC.error, s, MAX_STRING);
1625: return 1;
1.110 paf 1626: }
1.1 paf 1627:
1.110 paf 1628: static void yyprint(FILE *file, int type, YYSTYPE value) {
1629: if(type==STRING)
1.206 paf 1630: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1631: }
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