Annotation of parser3/src/main/compile.y, revision 1.295
1.168 parser 1: %{
1.105 paf 2: /** @file
1.106 paf 3: Parser: compiler(lexical parser and grammar).
4:
1.294 moko 5: Copyright (c) 2001-2023 Art. Lebedev Studio (http://www.artlebedev.com)
6: Authors: Konstantin Morshnev <moko@design.ru>, Alexandr Petrosian <paf@design.ru>
1.217 paf 7:
1.262 moko 8:
1.88 paf 9: */
10:
1.295 ! moko 11: volatile const char * IDENT_COMPILE_Y = "$Id: compile.y,v 1.294 2023/09/26 20:49:09 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:
1.292 moko 65: #define CLASS_ADD if(PC.class_add()){ \
66: PC.error=pa_strcat(PC.cclass->type(), " - class is already defined"); \
67: YYERROR; \
1.281 moko 68: }
69:
1.292 moko 70: #define YYERROR3(header, value, footer) { \
71: PC.error=pa_strcat(header, value, footer); \
72: YYERROR; \
73: }
74:
75: #define YYERROR1(value) { \
76: PC.error=value; \
77: YYERROR; \
1.265 moko 78: }
79:
1.1 paf 80: %}
81:
1.271 moko 82: %pure-parser
83: %lex-param {Parse_control* pc}
84: %parse-param {Parse_control* pc}
1.1 paf 85:
1.13 paf 86: %token EON
1.4 paf 87: %token STRING
1.1 paf 88: %token BOGUS
1.55 paf 89:
1.58 paf 90: %token BAD_STRING_COMPARISON_OPERATOR
1.114 paf 91: %token BAD_HEX_LITERAL
1.171 parser 92: %token BAD_METHOD_DECL_START
1.193 paf 93: %token BAD_METHOD_PARAMETER_NAME_CHARACTER
1.58 paf 94:
1.59 paf 95: %token LAND "&&"
1.58 paf 96: %token LOR "||"
1.193 paf 97: %token LXOR "!||"
98: %token NXOR "!|"
1.58 paf 99:
100: %token NLE "<="
101: %token NGE ">="
102: %token NEQ "=="
103: %token NNE "!="
1.195 paf 104: %token NSL "<<"
105: %token NSR ">>"
1.58 paf 106:
107: %token SLT "lt"
108: %token SGT "gt"
109: %token SLE "le"
110: %token SGE "ge"
111: %token SEQ "eq"
112: %token SNE "ne"
113:
1.67 paf 114: %token DEF "def"
115: %token IN "in"
116: %token FEXISTS "-f"
1.127 paf 117: %token DEXISTS "-d"
1.95 paf 118: %token IS "is"
1.67 paf 119:
1.216 paf 120: %token LITERAL_TRUE "true"
121: %token LITERAL_FALSE "false"
122:
1.57 paf 123: /* logical */
1.193 paf 124: %left "!||"
1.57 paf 125: %left "||"
126: %left "&&"
1.131 paf 127: %left '<' '>' "<=" ">=" "lt" "gt" "le" "ge"
128: %left "==" "!=" "eq" "ne"
129: %left "is" "def" "in" "-f" "-d"
1.57 paf 130:
131: /* bitwise */
1.193 paf 132: %left "!|"
1.131 paf 133: %left '|'
134: %left '&'
1.202 paf 135: %left "<<" ">>"
1.57 paf 136:
1.56 paf 137: /* numerical */
1.202 paf 138: %left '+' '-'
139: %left '*' '/' '\\' '%'
140: %left NUNARY /* unary - + */
141:
142: /* out-of-group */
143: %left '~' /* bitwise */
144: %left '!' /* logical */
1.1 paf 145:
146: %%
1.195 paf 147: all:
1.10 paf 148: one_big_piece {
1.284 moko 149: 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 150: PC.cclass->set_method(PC.alias_method(main_method_name), method);
1.10 paf 151: }
152: | methods;
153:
154: methods: method | methods method;
155: one_big_piece: maybe_codes;
156:
1.34 paf 157: method: control_method | code_method;
158:
159: control_method: '@' STRING '\n'
1.132 paf 160: maybe_control_strings {
1.260 misha 161: const String& command=LA2S(*$2)->trim(String::TRIM_END);
1.34 paf 162: YYSTYPE strings_code=$4;
1.292 moko 163: if(strings_code->count()<1*OPERATIONS_PER_OPVALUE)
164: YYERROR3("@", command.cstr(), " is empty");
1.74 paf 165: if(command==CLASS_NAME) {
1.206 paf 166: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.265 moko 167: CLASS_ADD;
1.73 paf 168: // new class' name
1.260 misha 169: const String& name=LA2S(*strings_code)->trim(String::TRIM_END);
1.73 paf 170: // creating the class
1.288 moko 171: VStateless_class* cclass=new VClass(name.cstr(), PC.request.get_used_filespec(PC.file_no));
1.226 misha 172: PC.cclass_new=cclass;
1.266 misha 173: PC.append=false;
1.73 paf 174: } else {
1.292 moko 175: YYERROR1("@" CLASS_NAME " must contain only one line with class name (contains more then one)");
1.34 paf 176: }
1.130 paf 177: } else if(command==USE_CONTROL_METHOD_NAME) {
1.265 moko 178: CLASS_ADD;
1.273 moko 179: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE){
1.288 moko 180: PC.request.use_file(LA2S(*strings_code, i)->trim(String::TRIM_END), PC.request.get_used_filespec(PC.file_no), strings_code->get(i+1).origin);
1.273 moko 181: }
1.130 paf 182: } else if(command==BASE_NAME) {
1.292 moko 183: if(PC.append)
184: YYERROR3("can't set base while appending methods to class '", PC.cclass->type(), "'");
1.265 moko 185: CLASS_ADD;
1.292 moko 186: if(PC.cclass->base_class()) // already changed from default?
187: YYERROR3("class already have a base '", PC.cclass->base_class()->type(), "'");
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);
1.283 moko 190: if(VStateless_class *base_class=PC.request.get_class(base_name)) {
1.206 paf 191: // @CLASS == @BASE sanity check
1.292 moko 192: if(PC.cclass==base_class)
193: YYERROR1("@" CLASS_NAME " equals @" BASE_NAME);
1.283 moko 194: PC.cclass->get_class()->set_base(base_class);
1.206 paf 195: } else {
1.292 moko 196: YYERROR3("'", base_name.cstr(), "': undefined class in @" BASE_NAME);
1.73 paf 197: }
1.34 paf 198: } else {
1.292 moko 199: YYERROR1("@" BASE_NAME " must contain sole name");
1.34 paf 200: }
1.223 misha 201: } else if(command==OPTIONS_CONTROL_METHOD_NAME) {
202: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE) {
1.260 misha 203: const String& option=LA2S(*strings_code, i)->trim(String::TRIM_END);
1.279 moko 204: if(option==Symbols::LOCALS_SYMBOL){
1.226 misha 205: PC.set_all_vars_local();
1.279 moko 206: } else if(option==Symbols::PARTIAL_SYMBOL){
1.230 misha 207: if(PC.cclass_new){
208: if(VStateless_class* existed=PC.get_existed_class(PC.cclass_new)){
1.292 moko 209: if(!PC.reuse_existed_class(existed))
210: YYERROR3("can't append methods to '", PC.cclass_new->type(), "' - the class wasn't marked as partial");
1.226 misha 211: } else {
1.256 misha 212: // marks the new class as partial. we will be able to add methods here later.
1.230 misha 213: PC.cclass_new->set_partial();
1.226 misha 214: }
1.230 misha 215: } else {
1.292 moko 216: YYERROR1("'partial' option should be used straight after @" CLASS_NAME);
1.226 misha 217: }
1.279 moko 218: } else if(option==Symbols::STATIC_SYMBOL){
1.256 misha 219: PC.set_methods_call_type(Method::CT_STATIC);
1.279 moko 220: } else if(option==Symbols::DYNAMIC_SYMBOL){
1.256 misha 221: PC.set_methods_call_type(Method::CT_DYNAMIC);
1.223 misha 222: } else {
1.292 moko 223: YYERROR3("'", option.cstr(), "' invalid option. valid options are 'partial', 'locals', 'static' and 'dynamic'");
1.223 misha 224: }
225: }
1.130 paf 226: } else {
1.292 moko 227: YYERROR3("'", command.cstr(), "' invalid special name. valid names are '" CLASS_NAME "', '" USE_CONTROL_METHOD_NAME "', '" BASE_NAME "' and '" OPTIONS_CONTROL_METHOD_NAME "'.");
1.34 paf 228: }
229: };
1.132 paf 230: maybe_control_strings: empty | control_strings;
1.259 misha 231: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2); };
1.37 paf 232: control_string: maybe_string '\n';
233: maybe_string: empty | STRING;
1.34 paf 234:
1.222 misha 235: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n' {
1.265 moko 236: CLASS_ADD;
1.208 paf 237: PC.explicit_result=false;
1.10 paf 238:
239: YYSTYPE params_names_code=$3;
1.206 paf 240: ArrayString* params_names=0;
241: if(int size=params_names_code->count()) {
242: params_names=new ArrayString;
243: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
244: *params_names+=LA2S(*params_names_code, i);
1.75 paf 245: }
1.10 paf 246:
247: YYSTYPE locals_names_code=$4;
1.206 paf 248: ArrayString* locals_names=0;
1.284 moko 249: bool all_vars_local=PC.cclass->is_vars_local();
250:
1.206 paf 251: if(int size=locals_names_code->count()) {
252: locals_names=new ArrayString;
1.208 paf 253: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE) {
254: const String* local_name=LA2S(*locals_names_code, i);
1.279 moko 255: if(SYMBOLS_EQ(*local_name,RESULT_SYMBOL))
1.208 paf 256: PC.explicit_result=true;
1.279 moko 257: else if(SYMBOLS_EQ(*local_name,LOCALS_SYMBOL))
1.223 misha 258: all_vars_local=true;
1.208 paf 259: else
260: *locals_names+=local_name;
261: }
1.75 paf 262: }
1.10 paf 263:
1.208 paf 264: Method* method=new Method(
1.206 paf 265: //name,
1.257 misha 266: GetMethodCallType(PC, *$2),
1.81 paf 267: 0, 0/*min,max numbered_params_count*/,
1.76 paf 268: params_names, locals_names,
1.223 misha 269: 0/*to be filled later in next {} */, 0, all_vars_local);
1.221 misha 270:
1.208 paf 271: *reinterpret_cast<Method**>(&$$)=method;
1.222 misha 272: } maybe_codes {
1.251 misha 273: Method* method=reinterpret_cast<Method*>($7);
1.231 misha 274: // fill in the code
1.251 misha 275: method->parser_code=$8;
1.231 misha 276:
277: // register in class
278: const String& name=*LA2S(*$2);
1.251 misha 279: PC.cclass->set_method(PC.alias_method(name), method);
1.8 paf 280: };
1.10 paf 281:
282: maybe_bracketed_strings: empty | bracketed_maybe_strings;
1.259 misha 283: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2;};
1.10 paf 284: maybe_strings: empty | strings;
1.259 misha 285: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3); };
1.10 paf 286:
287: maybe_comment: empty | STRING;
1.1 paf 288:
289: /* codes */
290:
1.10 paf 291: maybe_codes: empty | codes;
292:
1.259 misha 293: codes: code | codes code { $$=$1; P(*$$, *$2); };
1.81 paf 294: code: write_string | action;
1.209 paf 295: action: get | put | call;
1.1 paf 296:
297: /* get */
298:
1.64 paf 299: get: get_value {
1.238 misha 300: $$=N();
301: YYSTYPE code=$1;
1.247 misha 302: size_t count=code->count();
1.245 misha 303:
1.235 misha 304: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.281 moko 305: if(count!=3 || !change_first(*code, OP::OP_VALUE__GET_ELEMENT, /*=>*/OP::OP_VALUE__GET_ELEMENT__WRITE) )
1.238 misha 306: #endif
1.247 misha 307:
1.245 misha 308: #ifdef OPTIMIZE_BYTECODE_GET_SELF_ELEMENT
1.281 moko 309: if(count!=3 || !change_first(*code, OP::OP_WITH_SELF__VALUE__GET_ELEMENT, /*=>*/OP::OP_WITH_SELF__VALUE__GET_ELEMENT__WRITE) )
1.245 misha 310: #endif
311:
1.239 misha 312: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
1.281 moko 313: if(count!=5 || !change_first(*code, OP::OP_GET_OBJECT_ELEMENT, /*=>*/OP::OP_GET_OBJECT_ELEMENT__WRITE) )
1.239 misha 314: #endif
315:
316: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
1.281 moko 317: if(count!=5 || !change_first(*code, OP::OP_GET_OBJECT_VAR_ELEMENT, /*=>*/OP::OP_GET_OBJECT_VAR_ELEMENT__WRITE) )
1.238 misha 318: #endif
1.267 misha 319:
320: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT__SPECIAL
1.281 moko 321: if(!change(*code, count-1/* last */, OP::OP_GET_ELEMENT__SPECIAL, /*=>*/OP::OP_GET_ELEMENT__SPECIAL__WRITE) )
1.267 misha 322: #endif
323:
1.247 misha 324: {
1.281 moko 325: change_or_append(*code, count-1 /* last */, OP::OP_GET_ELEMENT, /*=>*/OP::OP_GET_ELEMENT__WRITE, /*or */OP::OP_WRITE_VALUE ); /* value=pop; wcontext.write(value) */
1.246 misha 326: }
1.247 misha 327:
1.238 misha 328: P(*$$, *code);
1.1 paf 329: };
1.259 misha 330: get_value: '$' get_name_value { $$=$2; };
1.64 paf 331: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.259 misha 332: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2; };
1.44 paf 333: name_without_curly_rdive:
334: name_without_curly_rdive_read
335: | name_without_curly_rdive_class;
1.19 paf 336: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 337: $$=N();
1.238 misha 338: YYSTYPE diving_code=$1;
1.239 misha 339: size_t count=diving_code->count();
1.247 misha 340:
341: if(maybe_make_self(*$$, *diving_code, count)) {
342: // $self.
343: } else
1.239 misha 344:
345: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
1.247 misha 346: if(maybe_make_get_object_element(*$$, *diving_code, count)){
1.245 misha 347: // optimization for $object.field + ^object.method[
1.247 misha 348: } else
1.238 misha 349: #endif
1.239 misha 350:
351: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
1.247 misha 352: if(maybe_make_get_object_var_element(*$$, *diving_code, count)){
1.245 misha 353: // optimization for $object.$var
1.247 misha 354: } else
1.238 misha 355: #endif
1.239 misha 356:
357: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.281 moko 358: if(count>=4 && (*diving_code)[0].code==OP::OP_VALUE && (*diving_code)[3].code==OP::OP_GET_ELEMENT ){
1.248 misha 359: // optimization
1.239 misha 360: O(*$$,
1.247 misha 361: (PC.in_call_value && count==4)
1.239 misha 362: ? OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR // ^object[ : OP_VALUE+origin+string+OP_GET_ELEMENT => OP_VALUE__GET_ELEMENT_OR_OPERATOR+origin+string
363: : OP::OP_VALUE__GET_ELEMENT // $object : OP_VALUE+origin+string+OP_GET_ELEMENT => OP_VALUE__GET_ELEMENT+origin+string
364: );
365: P(*$$, *diving_code, 1/*offset*/, 2/*limit*/); // copy origin+value
1.247 misha 366: if(count>4)
367: P(*$$, *diving_code, 4); // copy tail
1.239 misha 368: } else {
369: O(*$$, OP::OP_WITH_READ); /* stack: starting context */
370: P(*$$, *diving_code);
371: }
1.233 misha 372: #else
1.247 misha 373: {
1.238 misha 374: O(*$$, OP::OP_WITH_READ); /* stack: starting context */
1.179 paf 375:
1.238 misha 376: // ^if OP_ELEMENT => ^if OP_ELEMENT_OR_OPERATOR
377: // optimized OP_VALUE+origin+string+OP_GET_ELEMENT. => OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
1.239 misha 378: if(PC.in_call_value && count==4)
379: diving_code->put(count-1, OP::OP_GET_ELEMENT_OR_OPERATOR);
1.206 paf 380: P(*$$, *diving_code);
1.239 misha 381: }
1.233 misha 382: #endif
1.22 paf 383: /* diving code; stack: current context */
1.1 paf 384: };
1.259 misha 385: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2); };
386: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2); };
1.1 paf 387:
388: /* put */
389:
1.81 paf 390: put: '$' name_expr_wdive construct {
1.241 misha 391: $$=N();
1.244 misha 392: #ifdef OPTIMIZE_BYTECODE_CONSTRUCT
393: if(maybe_optimize_construct(*$$, *$2, *$3)){
1.246 misha 394: // $a(expr), $.a(expr), $a[value], $.a[value], $self.a[value], $self.a(expr)
1.241 misha 395: } else
396: #endif
397: {
398: P(*$$, *$2); /* stack: context,name */
399: P(*$$, *$3); /* stack: context,name,constructor_value */
400: }
1.20 paf 401: };
1.44 paf 402: name_expr_wdive:
1.157 parser 403: name_expr_wdive_root
404: | name_expr_wdive_write
1.44 paf 405: | name_expr_wdive_class;
1.157 parser 406: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 407: $$=N();
1.238 misha 408: YYSTYPE diving_code=$1;
1.247 misha 409: size_t count=diving_code->count();
410:
411: if(maybe_make_self(*$$, *diving_code, count)) {
412: // $self.
413: } else
414: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.281 moko 415: if(count>=4 && (*diving_code)[0].code==OP::OP_VALUE && (*diving_code)[3].code==OP::OP_GET_ELEMENT ){
1.247 misha 416: O(*$$, OP::OP_WITH_ROOT__VALUE__GET_ELEMENT);
417: P(*$$, *diving_code, 1/*offset*/, 2/*limit*/); // copy origin+value
418: if(count>4)
419: P(*$$, *diving_code, 4); // tail
420: } else
421: #endif
422: {
1.229 misha 423: O(*$$, OP::OP_WITH_ROOT); /* stack: starting context */
1.206 paf 424: P(*$$, *diving_code);
1.23 paf 425: }
426: /* diving code; stack: current context */
1.156 parser 427: };
1.157 parser 428: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 429: $$=N();
1.229 misha 430: O(*$$, OP::OP_WITH_WRITE); /* stack: starting context */
1.206 paf 431: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 432: };
1.259 misha 433: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2); };
1.20 paf 434:
1.244 misha 435: construct:
1.163 parser 436: construct_square
437: | construct_round
438: | construct_curly
1.149 parser 439: ;
1.211 paf 440: construct_square: '[' {
441: // allow $result_or_other_variable[ letters here any time ]
442: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
443: } any_constructor_code_value {
1.213 paf 444: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.211 paf 445: } ']' {
1.149 parser 446: // stack: context, name
1.211 paf 447: $$=$3; // stack: context, name, value
1.229 misha 448: O(*$$, OP::OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 449: }
450: ;
1.149 parser 451: construct_round: '(' expr_value ')' {
1.206 paf 452: $$=N();
1.149 parser 453: // stack: context, name
1.206 paf 454: P(*$$, *$2); // stack: context, name, value
1.229 misha 455: O(*$$, OP::OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 456: }
1.52 paf 457: ;
1.149 parser 458: construct_curly: '{' maybe_codes '}' {
459: // stack: context, name
1.206 paf 460: $$=N();
1.229 misha 461: OA(*$$, OP::OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 462: };
463:
1.55 paf 464: any_constructor_code_value:
1.261 moko 465: empty_value /* optimized $var[] case */
1.52 paf 466: | STRING /* optimized $var[STRING] case */
1.55 paf 467: | constructor_code_value /* $var[something complex] */
1.1 paf 468: ;
1.55 paf 469: constructor_code_value: constructor_code {
1.206 paf 470: $$=N();
1.229 misha 471: OA(*$$, OP::OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 472: /* some code that writes to that context */
473: /* context=pop; stack: context.value() */
1.1 paf 474: };
1.55 paf 475: constructor_code: codes__excluding_sole_str_literal;
1.259 misha 476: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2); };
1.27 paf 477:
1.1 paf 478: /* call */
479:
1.66 paf 480: call: call_value {
1.267 misha 481: size_t count=$1->count();
1.238 misha 482: #ifdef OPTIMIZE_BYTECODE_CUT_REM_OPERATOR
1.267 misha 483: if(count)
1.238 misha 484: #endif
485: {
486: $$=$1; /* stack: value */
1.281 moko 487: if(!change_first(*$$, OP::OP_CONSTRUCT_OBJECT, /*=>*/ OP::OP_CONSTRUCT_OBJECT__WRITE))
488: change_or_append(*$$, count-2 /* second last */, OP::OP_CALL, /*=>*/ OP::OP_CALL__WRITE, /*or */ OP::OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.238 misha 489: }
1.66 paf 490: };
1.177 paf 491: call_value: '^' {
1.281 moko 492: PC.in_call_value=true;
493: }
494: call_name {
495: PC.in_call_value=false;
496: }
497: store_params EON { /* ^field.$method{vasya} */
1.238 misha 498: #ifdef OPTIMIZE_BYTECODE_CUT_REM_OPERATOR
1.242 misha 499: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.238 misha 500: const String* operator_name=LA2S(*$3, 0, OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR);
1.242 misha 501: #else
502: const String* operator_name=LA2S(*$3, 1);
503: #endif
1.279 moko 504: if(operator_name && SYMBOLS_EQ(*operator_name,REM_SYMBOL)){
1.238 misha 505: $$=N();
506: } else
507: #endif
508: {
509: YYSTYPE params_code=$5;
510: if(params_code->count()==3) { // probably [] case. [OP::OP_VALUE+origin+Void]
511: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.261 moko 512: if(const String * string=value->get_string())
513: if(string->is_empty()) // value is empty string?
514: params_code=0; // ^zzz[] case. don't append lone empty param.
1.238 misha 515: }
516: /* stack: context, method_junction */
1.249 misha 517:
518: YYSTYPE var_code=$3;
519: if(
520: var_code->count()==8
1.282 moko 521: && ( (*var_code)[0].code==OP::OP_VALUE__GET_CLASS || (*var_code)[0].code==OP::OP_VALUE__GET_BASE_CLASS )
1.249 misha 522: && (*var_code)[3].code==OP::OP_PREPARE_TO_CONSTRUCT_OBJECT
523: && (*var_code)[4].code==OP::OP_VALUE
1.272 moko 524: #ifdef FEATURE_GET_ELEMENT4CALL
525: && (*var_code)[7].code==OP::OP_GET_ELEMENT4CALL
526: #else
1.249 misha 527: && (*var_code)[7].code==OP::OP_GET_ELEMENT
1.272 moko 528: #endif
1.249 misha 529: ){
1.267 misha 530: $$=N();
1.249 misha 531: O(*$$, OP::OP_CONSTRUCT_OBJECT);
532: P(*$$, *var_code, 1/*offset*/, 2/*limit*/); // class name
533: P(*$$, *var_code, 5/*offset*/, 2/*limit*/); // constructor name
534: OA(*$$, params_code);
535: } else
536: {
537: $$=var_code; /* with_xxx,diving code; stack: context,method_junction */
538: OA(*$$, OP::OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
539: }
1.238 misha 540: }
1.1 paf 541: };
542:
1.272 moko 543: call_name: name_without_curly_rdive {
544: #ifdef FEATURE_GET_ELEMENT4CALL
545: size_t count=$1->count();
546: if(count){
547: $$=$1;
548: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
549: !(count==5 && change_first(*$$, OP::OP_GET_OBJECT_ELEMENT, OP::OP_GET_OBJECT_ELEMENT4CALL)) &&
550: #endif
551: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
552: !(count==5 && change_first(*$$, OP::OP_GET_OBJECT_VAR_ELEMENT, OP::OP_GET_OBJECT_VAR_ELEMENT4CALL)) &&
553: #endif
554: !change(*$$, count-1, OP::OP_GET_ELEMENT, OP::OP_GET_ELEMENT4CALL);
555: }
556: #endif
557: };
1.38 paf 558:
1.259 misha 559: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2); };
1.69 paf 560: store_param:
561: store_square_param
562: | store_round_param
563: | store_curly_param
1.31 paf 564: ;
1.210 paf 565: store_square_param: '[' {
1.211 paf 566: // allow ^call[ letters here any time ]
1.210 paf 567: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
568: } store_code_param_parts {
1.213 paf 569: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.259 misha 570: } ']' {$$=$3;};
571: store_round_param: '(' store_expr_param_parts ')' {$$=$2;};
572: store_curly_param: '{' store_curly_param_parts '}' {$$=$2;};
1.69 paf 573: store_code_param_parts:
574: store_code_param_part
1.259 misha 575: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3); }
1.69 paf 576: ;
577: store_expr_param_parts:
578: store_expr_param_part
1.259 misha 579: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3); }
1.69 paf 580: ;
1.94 paf 581: store_curly_param_parts:
582: store_curly_param_part
1.259 misha 583: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3); }
1.94 paf 584: ;
1.120 paf 585: store_code_param_part: code_param_value {
1.32 paf 586: $$=$1;
1.120 paf 587: };
1.214 paf 588: store_expr_param_part: expr_value {
589: YYSTYPE expr_code=$1;
1.215 paf 590: if(expr_code->count()==3
1.234 misha 591: && (*expr_code)[0].code==OP::OP_VALUE) { // optimizing (double/bool/incidently 'string' too) case. [OP::OP_VALUE+origin+Double]. no evaluating
1.214 paf 592: $$=expr_code;
593: } else {
1.238 misha 594: YYSTYPE code=N();
1.214 paf 595: P(*code, *expr_code);
1.229 misha 596: O(*code, OP::OP_WRITE_EXPR_RESULT);
1.214 paf 597: $$=N();
1.229 misha 598: OA(*$$, OP::OP_EXPR_CODE__STORE_PARAM, code);
1.214 paf 599: }
1.69 paf 600: };
1.94 paf 601: store_curly_param_part: maybe_codes {
1.206 paf 602: $$=N();
1.229 misha 603: OA(*$$, OP::OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 604: };
1.120 paf 605: code_param_value:
1.261 moko 606: empty_value /* optimized [;...] case */
1.120 paf 607: | STRING /* optimized [STRING] case */
608: | constructor_code_value /* [something complex] */
609: ;
1.1 paf 610:
611: /* name */
612:
1.259 misha 613: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2); };
1.1 paf 614:
1.259 misha 615: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2); };
1.1 paf 616: name_step: name_advance1 '.';
617: name_advance1: name_expr_value {
1.177 paf 618: // we know that name_advance1 not called from ^xxx context
619: // so we'll not check for operator call possibility as we do in name_advance2
620:
1.1 paf 621: /* stack: context */
622: $$=$1; /* stack: context,name */
1.267 misha 623: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT__SPECIAL
624: O(*$$, is_special_element(*$$) ? OP::OP_GET_ELEMENT__SPECIAL : OP::OP_GET_ELEMENT);
625: #else
1.229 misha 626: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.267 misha 627: #endif
1.1 paf 628: };
629: name_advance2: name_expr_value {
630: /* stack: context */
631: $$=$1; /* stack: context,name */
1.267 misha 632: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT__SPECIAL
633: O(*$$, is_special_element(*$$) ? OP::OP_GET_ELEMENT__SPECIAL : OP::OP_GET_ELEMENT);
634: #else
1.229 misha 635: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.267 misha 636: #endif
1.1 paf 637: }
1.4 paf 638: | STRING BOGUS
1.1 paf 639: ;
640: name_expr_value:
1.4 paf 641: STRING /* subname_is_const */
1.1 paf 642: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 643: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 644: | name_square_code_value /* [codes] */
1.1 paf 645: ;
646: name_expr_subvar_value: '$' subvar_ref_name_rdive {
647: $$=$2;
1.229 misha 648: O(*$$, OP::OP_GET_ELEMENT);
1.1 paf 649: };
1.4 paf 650: name_expr_with_subvar_value: STRING subvar_get_writes {
1.238 misha 651: YYSTYPE code;
1.183 paf 652: {
1.206 paf 653: change_string_literal_to_write_string_literal(*(code=$1));
654: P(*code, *$2);
1.183 paf 655: }
1.206 paf 656: $$=N();
1.229 misha 657: OA(*$$, OP::OP_STRING_POOL, code);
1.1 paf 658: };
1.212 paf 659: name_square_code_value: '[' {
660: // allow $result_or_other_variable[ letters here any time ]
661: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
662: } codes {
1.213 paf 663: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.212 paf 664: } ']' {
1.206 paf 665: $$=N();
1.267 misha 666: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT__SPECIAL
667: if(!maybe_append_simple_diving_code(*$$, *$3))
668: #endif
669: {
1.281 moko 670: OA(*$$, OP::OP_OBJECT_POOL, $3); /* stack: empty write context */
671: /* some code that writes to that context */
672: /* context=pop; stack: context.value() */
1.267 misha 673: }
1.160 parser 674: };
1.154 parser 675: subvar_ref_name_rdive: STRING {
1.206 paf 676: $$=N();
1.229 misha 677: O(*$$, OP::OP_WITH_READ);
1.206 paf 678: P(*$$, *$1);
1.1 paf 679: };
1.259 misha 680: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2); };
1.1 paf 681: subvar__get_write: '$' subvar_ref_name_rdive {
682: $$=$2;
1.229 misha 683: O(*$$, OP::OP_GET_ELEMENT__WRITE);
1.42 paf 684: };
685:
1.154 parser 686: class_prefix:
687: class_static_prefix
688: | class_constructor_prefix
689: ;
1.155 parser 690: class_static_prefix: STRING ':' {
691: $$=$1; // stack: class name string
1.282 moko 692: OP::OPCODE code = OP::OP_VALUE__GET_CLASS;
1.206 paf 693: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
694: if(VStateless_class* base=PC.cclass->base_class()) {
1.275 moko 695: change_string_literal_value(*$$, *new String(base->type()));
1.189 paf 696: } else {
1.292 moko 697: YYERROR1("no base class declared");
1.189 paf 698: }
1.282 moko 699: code = OP::OP_VALUE__GET_BASE_CLASS;
700: } else {
1.283 moko 701: // can't use get_class because it will call @autouse[] if the class wasn't loaded
702: VStateless_class* base=PC.request.classes().get(*LA2S(*$$));
703: if(base && PC.cclass->derived_from(*base))
1.282 moko 704: code = OP::OP_VALUE__GET_BASE_CLASS;
1.189 paf 705: }
1.238 misha 706: // optimized OP_VALUE+origin+string+OP_GET_CLASS => OP_VALUE__GET_CLASS+origin+string
1.282 moko 707: change_first(*$$, OP::OP_VALUE, code);
1.155 parser 708: };
709: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 710: $$=$1;
1.292 moko 711: if(!PC.in_call_value)
712: YYERROR1(":: not allowed here");
1.229 misha 713: O(*$$, OP::OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 714: };
715:
1.53 paf 716:
1.56 paf 717: /* expr */
1.53 paf 718:
1.214 paf 719: expr_value: expr;
1.56 paf 720: expr:
1.214 paf 721: double_or_STRING
1.216 paf 722: | true_value
723: | false_value
1.64 paf 724: | get_value
1.66 paf 725: | call_value
1.259 misha 726: | '"' string_inside_quotes_value '"' { $$ = $2; }
727: | '\'' string_inside_quotes_value '\'' { $$ = $2; }
1.60 paf 728: | '(' expr ')' { $$ = $2; }
729: /* stack: operand // stack: @operand */
1.259 misha 730: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP::OP_NEG); }
731: | '+' expr %prec NUNARY { $$=$2; }
732: | '~' expr { $$=$2; O(*$$, OP::OP_INV); }
733: | '!' expr { $$=$2; O(*$$, OP::OP_NOT); }
734: | "def" expr { $$=$2; O(*$$, OP::OP_DEF); }
735: | "in" expr { $$=$2; O(*$$, OP::OP_IN); }
736: | "-f" expr { $$=$2; O(*$$, OP::OP_FEXISTS); }
737: | "-d" expr { $$=$2; O(*$$, OP::OP_DEXISTS); }
1.60 paf 738: /* stack: a,b // stack: a@b */
1.259 misha 739: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_SUB); }
740: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_ADD); }
741: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MUL); }
742: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_DIV); }
743: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MOD); }
744: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_INTDIV); }
745: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SL); }
746: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SR); }
747: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_AND); }
748: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_OR); }
749: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_XOR); }
750: | expr "&&" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_AND); }
751: | expr "||" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_OR); }
752: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_LOG_XOR); }
753: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LT); }
754: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GT); }
755: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LE); }
756: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GE); }
757: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_EQ); }
758: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_NE); }
759: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LT); }
760: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GT); }
761: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LE); }
762: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GE); }
763: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_EQ); }
764: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_NE); }
765: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_IS); }
1.56 paf 766: ;
1.214 paf 767:
768: double_or_STRING: STRING {
1.238 misha 769: // optimized OP_STRING => OP_VALUE for doubles
1.214 paf 770: maybe_change_string_literal_to_double_literal(*($$=$1));
771: };
1.55 paf 772:
1.65 paf 773: string_inside_quotes_value: maybe_codes {
1.238 misha 774: #ifdef OPTIMIZE_BYTECODE_STRING_POOL
775: // it brakes ^if(" 09 "){...}
776: YYSTYPE code=$1;
777: $$=N();
1.267 misha 778: if(code->count()==3 && change_first(*code, OP::OP_STRING__WRITE, OP::OP_VALUE)){
1.238 misha 779: // optimized OP_STRING__WRITE+origin+value => OP_VALUE+origin+value without starting OP_STRING_POOL
780: P(*$$, *code);
781: } else {
782: OA(*$$, OP::OP_STRING_POOL, code); /* stack: empty write context */
783: }
784: #else
1.206 paf 785: $$=N();
1.229 misha 786: OA(*$$, OP::OP_STRING_POOL, $1); /* stack: empty write context */
1.238 misha 787: #endif
1.183 paf 788: /* some code that writes to that context */
789: /* context=pop; stack: context.get_string() */
1.53 paf 790: };
1.1 paf 791:
1.27 paf 792: /* basics */
1.1 paf 793:
1.81 paf 794: write_string: STRING {
1.238 misha 795: // optimized OP_STRING+OP_WRITE_VALUE => OP_STRING__WRITE
1.259 misha 796: change_string_literal_to_write_string_literal(*($$=$1));
1.54 paf 797: };
798:
1.261 moko 799: empty_value: /* empty */ { $$=VL(/*we know that we will not change it*/const_cast<VString*>(&vempty), 0, 0, 0); }
1.259 misha 800: true_value: "true" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vtrue), 0, 0, 0); }
801: false_value: "false" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vfalse), 0, 0, 0); }
1.216 paf 802:
1.259 misha 803: empty: /* empty */ { $$=N(); };
1.1 paf 804:
805: %%
1.105 paf 806: #endif
1.1 paf 807:
808: /*
809: 000$111(2222)00
810: 000$111{3333}00
1.9 paf 811: $,^: push,=0
1.1 paf 812: 1:( { break=pop
813: 2:( ) pop
814: 3:{ } pop
815:
816: 000^111(2222)4444{33333}4000
1.9 paf 817: $,^: push,=0
1.1 paf 818: 1:( { break=pop
819: 2:( )=4
820: 3:{ }=4
821: 4:[^({]=pop
822: */
823:
1.206 paf 824: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
825: pc.source--;
826: if(pc.pos.col==0) {
827: --pc.pos.line; pc.pos.col=last_line_end_col;
828: } else
829: --pc.pos.col;
830:
831: }
832: static int yylex(YYSTYPE *lvalp, void *apc) {
1.295 ! moko 833: Parse_control& pc=*static_cast<Parse_control*>(apc);
1.206 paf 834:
835: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 836: #define RC {result=c; goto break2; }
1.1 paf 837:
1.295 ! moko 838: int c;
1.206 paf 839: int result;
1.1 paf 840:
1.206 paf 841: if(pc.pending_state) {
842: result=pc.pending_state;
843: pc.pending_state=0;
1.1 paf 844: return result;
845: }
846:
1.206 paf 847: const char *begin=pc.source;
848: Pos begin_pos=pc.pos;
1.91 paf 849: const char *end;
1.67 paf 850: int skip_analized=0;
1.50 paf 851: while(true) {
1.206 paf 852: c=*(end=(pc.source++));
853: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 854:
1.208 paf 855: if(c=='\n')
1.206 paf 856: pc.pos_next_line();
1.208 paf 857: else
1.206 paf 858: pc.pos_next_c(c);
1.208 paf 859: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 860:
1.208 paf 861: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 862: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 863: // @SPECIAL
864: // ...
865: // @<here =
1.206 paf 866: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 867: } // continuing checks
1.206 paf 868: if(pc.ls==LS_USER) {
869: push_LS(pc, LS_DEF_NAME);
1.171 parser 870: RC;
1.175 paf 871: } else // @ in first column inside some code [when could that be?]
1.171 parser 872: result=BAD_METHOD_DECL_START;
873: goto break2;
1.209 paf 874: }
875: if(c=='^') {
1.206 paf 876: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 877: // handle after-method situation
1.206 paf 878: pop_LS(pc);
1.203 paf 879: result=EON;
880: skip_analized=-1; // return to punctuation afterwards to assure it's literality
881: goto break2;
882: }
1.206 paf 883: switch(pc.ls) {
1.169 parser 884: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
885: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
886: case LS_VAR_NAME_SIMPLE_WITH_COLON:
887: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
888: case LS_VAR_NAME_CURLY:
889: case LS_METHOD_NAME:
1.194 paf 890: case LS_USER_COMMENT:
1.169 parser 891: case LS_DEF_COMMENT:
892: // no literals in names, please
893: break;
894: default:
1.206 paf 895: switch(*pc.source) {
1.165 parser 896: // ^escaping some punctuators
1.228 misha 897: case '^': case '$': case ';': case '@':
1.126 paf 898: case '(': case ')':
1.48 paf 899: case '[': case ']':
900: case '{': case '}':
1.172 parser 901: case '"': case ':':
1.40 paf 902: if(end!=begin) {
1.206 paf 903: if(!pc.string_start)
904: pc.string_start=begin_pos;
1.40 paf 905: // append piece till ^
1.206 paf 906: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 907: }
1.63 paf 908: // reset piece 'begin' position & line
1.206 paf 909: begin=pc.source; // ->punctuation
910: begin_pos=pc.pos;
1.203 paf 911: // skip over _ after ^
1.206 paf 912: pc.source++; pc.pos.col++;
1.203 paf 913: // skip analysis = forced literal
914: continue;
1.114 paf 915:
916: // converting ^#HH into char(hex(HH))
917: case '#':
918: if(end!=begin) {
1.206 paf 919: if(!pc.string_start)
920: pc.string_start=begin_pos;
1.114 paf 921: // append piece till ^
1.206 paf 922: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 923: }
924: // #HH ?
1.228 misha 925: if(pc.source[1] && isxdigit(pc.source[1]) && pc.source[2] && isxdigit(pc.source[2])) {
1.218 paf 926: char c=(char)(
1.206 paf 927: hex_value[(unsigned char)pc.source[1]]*0x10+
1.218 paf 928: hex_value[(unsigned char)pc.source[2]]);
1.206 paf 929: if(c==0) {
1.114 paf 930: result=BAD_HEX_LITERAL;
931: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
932: }
933: // append char(hex(HH))
1.206 paf 934: pc.string.append(c);
1.114 paf 935: // skip over ^#HH
1.206 paf 936: pc.source+=3;
937: pc.pos.col+=3;
1.114 paf 938: // reset piece 'begin' position & line
1.206 paf 939: begin=pc.source; // ->after ^#HH
940: begin_pos=pc.pos;
1.203 paf 941: // skip analysis = forced literal
1.114 paf 942: continue;
943: }
1.228 misha 944: // just escaped char
945: // reset piece 'begin' position & line
946: begin=pc.source;
947: begin_pos=pc.pos;
948: // skip over _ after ^
949: pc.source++; pc.pos.col++;
950: // skip analysis = forced literal
951: continue;
1.1 paf 952: }
1.169 parser 953: break;
1.203 paf 954: }
1.169 parser 955: }
1.113 paf 956: // #comment start skipping
1.206 paf 957: if(c=='#' && pc.pos.col==1) {
1.112 paf 958: if(end!=begin) {
1.206 paf 959: if(!pc.string_start)
960: pc.string_start=begin_pos;
1.112 paf 961: // append piece till #
1.206 paf 962: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 963: }
964: // fall into COMMENT lexical state [wait for \n]
1.206 paf 965: push_LS(pc, LS_USER_COMMENT);
1.175 paf 966: continue;
1.112 paf 967: }
1.206 paf 968: switch(pc.ls) {
1.10 paf 969:
970: // USER'S = NOT OURS
1.1 paf 971: case LS_USER:
1.206 paf 972: case LS_NAME_SQUARE_PART: // name.[here].xxx
973: if(pc.trim_bof)
1.153 parser 974: switch(c) {
975: case '\n': case ' ': case '\t':
1.206 paf 976: begin=pc.source;
977: begin_pos=pc.pos;
1.152 parser 978: continue; // skip it
1.153 parser 979: default:
1.206 paf 980: pc.trim_bof=false;
1.152 parser 981: }
1.48 paf 982: switch(c) {
983: case '$':
1.206 paf 984: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 985: RC;
986: case '^':
1.206 paf 987: push_LS(pc, LS_METHOD_NAME);
1.48 paf 988: RC;
1.166 parser 989: case ']':
1.206 paf 990: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 991: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 992: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 993: RC;
994: }
1.160 parser 995: break;
1.166 parser 996: case '[': // $name.[co<[>de]
1.206 paf 997: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 998: lexical_brackets_nestage++;
1.161 parser 999: break;
1.112 paf 1000: }
1.209 paf 1001: if(pc.explicit_result && c)
1002: switch(c) {
1.276 moko 1003: default:
1004: pc.string.append(c);
1.209 paf 1005: case '\n': case ' ': case '\t':
1006: begin=pc.source;
1007: begin_pos=pc.pos;
1.276 moko 1008: continue;
1.209 paf 1009: }
1.112 paf 1010: break;
1011:
1012: // #COMMENT
1.194 paf 1013: case LS_USER_COMMENT:
1.112 paf 1014: if(c=='\n') {
1015: // skip comment
1.206 paf 1016: begin=pc.source;
1017: begin_pos=pc.pos;
1.112 paf 1018:
1.206 paf 1019: pop_LS(pc);
1.112 paf 1020: continue;
1.1 paf 1021: }
1.48 paf 1022: break;
1023:
1024: // STRING IN EXPRESSION
1.145 parser 1025: case LS_EXPRESSION_STRING_QUOTED:
1026: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 1027: switch(c) {
1028: case '"':
1.145 parser 1029: case '\'':
1030: if(
1.270 moko 1031: (pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"') ||
1032: (pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') ) {
1.206 paf 1033: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 1034: RC;
1035: }
1036: break;
1.48 paf 1037: case '$':
1.206 paf 1038: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1039: RC;
1040: case '^':
1.206 paf 1041: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1042: RC;
1.10 paf 1043: }
1044: break;
1045:
1046: // METHOD DEFINITION
1047: case LS_DEF_NAME:
1.48 paf 1048: switch(c) {
1049: case '[':
1.206 paf 1050: pc.ls=LS_DEF_PARAMS;
1.48 paf 1051: RC;
1052: case '\n':
1.206 paf 1053: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 1054: RC;
1.10 paf 1055: }
1056: break;
1.48 paf 1057:
1.10 paf 1058: case LS_DEF_PARAMS:
1.48 paf 1059: switch(c) {
1.192 paf 1060: case '$': // common error
1.193 paf 1061: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
1062: goto break2;
1.48 paf 1063: case ';':
1064: RC;
1065: case ']':
1.206 paf 1066: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 1067: RC;
1.49 paf 1068: case '\n': // wrong. bailing out
1.206 paf 1069: pop_LS(pc);
1.48 paf 1070: RC;
1.10 paf 1071: }
1072: break;
1.48 paf 1073:
1.10 paf 1074: case LS_DEF_LOCALS:
1.48 paf 1075: switch(c) {
1076: case '[':
1077: case ';':
1078: RC;
1079: case ']':
1.206 paf 1080: pc.ls=LS_DEF_COMMENT;
1.48 paf 1081: RC;
1082: case '\n': // wrong. bailing out
1.206 paf 1083: pop_LS(pc);
1.48 paf 1084: RC;
1.10 paf 1085: }
1086: break;
1.48 paf 1087:
1.10 paf 1088: case LS_DEF_COMMENT:
1089: if(c=='\n') {
1.206 paf 1090: pop_LS(pc);
1.48 paf 1091: RC;
1.37 paf 1092: }
1093: break;
1094:
1.48 paf 1095: case LS_DEF_SPECIAL_BODY:
1.175 paf 1096: if(c=='\n')
1.48 paf 1097: RC;
1098: break;
1099:
1100: // (EXPRESSION)
1.69 paf 1101: case LS_VAR_ROUND:
1102: case LS_METHOD_ROUND:
1.48 paf 1103: switch(c) {
1104: case ')':
1.270 moko 1105: if(--lexical_brackets_nestage==0) {
1.206 paf 1106: if(pc.ls==LS_METHOD_ROUND) // method round param ended
1107: pc.ls=LS_METHOD_AFTER; // look for method end
1108: else // pc.ls==LS_VAR_ROUND // variable constructor ended
1109: pop_LS(pc); // return to normal life
1.270 moko 1110: }
1.48 paf 1111: RC;
1.194 paf 1112: case '#': // comment start skipping
1113: if(end!=begin) {
1.206 paf 1114: if(!pc.string_start)
1115: pc.string_start=begin_pos;
1.194 paf 1116: // append piece till #
1.206 paf 1117: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 1118: }
1119: // fall into COMMENT lexical state [wait for \n]
1.206 paf 1120: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 1121: lexical_brackets_nestage=1;
1122: continue;
1.48 paf 1123: case '$':
1.206 paf 1124: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 1125: RC;
1126: case '^':
1.206 paf 1127: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1128: RC;
1129: case '(':
1130: lexical_brackets_nestage++;
1131: RC;
1.67 paf 1132: case '-':
1.206 paf 1133: switch(*pc.source) {
1.127 paf 1134: case 'f': // -f
1.67 paf 1135: skip_analized=1;
1136: result=FEXISTS;
1.127 paf 1137: goto break2;
1138: case 'd': // -d
1139: skip_analized=1;
1140: result=DEXISTS;
1141: goto break2;
1.191 paf 1142: default: // minus
1.67 paf 1143: result=c;
1.127 paf 1144: goto break2;
1145: }
1.67 paf 1146: goto break2;
1.173 paf 1147: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 1148: case '~':
1.48 paf 1149: case ';':
1150: RC;
1.193 paf 1151: case '&': case '|':
1.206 paf 1152: if(*pc.source==c) { // && ||
1.193 paf 1153: result=c=='&'?LAND:LOR;
1.67 paf 1154: skip_analized=1;
1.58 paf 1155: } else
1156: result=c;
1157: goto break2;
1.193 paf 1158: case '!':
1.206 paf 1159: switch(pc.source[0]) {
1.193 paf 1160: case '|': // !| !||
1161: skip_analized=1;
1.206 paf 1162: if(pc.source[1]=='|') {
1.193 paf 1163: skip_analized++;
1164: result=LXOR;
1165: } else
1166: result=NXOR;
1167: goto break2;
1168: case '=': // !=
1169: skip_analized=1;
1170: result=NNE;
1171: goto break2;
1172: }
1173: RC;
1.195 paf 1174:
1175: case '<': // <<, <=, <
1.206 paf 1176: switch(*pc.source) {
1.195 paf 1177: case '<': // <[<]
1178: skip_analized=1; result=NSL; break;
1179: case '=': // <[=]
1180: skip_analized=1; result=NLE; break;
1181: default: // <[]
1182: result=c; break;
1183: }
1184: goto break2;
1185: case '>': // >>, >=, >
1.206 paf 1186: switch(*pc.source) {
1.195 paf 1187: case '>': // >[>]
1188: skip_analized=1; result=NSR; break;
1189: case '=': // >[=]
1190: skip_analized=1; result=NGE; break;
1191: default: // >[]
1192: result=c; break;
1193: }
1194: goto break2;
1195: case '=': // ==
1.206 paf 1196: switch(*pc.source) {
1.195 paf 1197: case '=': // =[=]
1198: skip_analized=1; result=NEQ; break;
1199: default: // =[]
1200: result=c; break; // not used now
1201: }
1.58 paf 1202: goto break2;
1.195 paf 1203:
1.48 paf 1204: case '"':
1.206 paf 1205: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1206: RC;
1207: case '\'':
1.206 paf 1208: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1209: RC;
1.50 paf 1210: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1211: if(end==begin) // right after whitespace
1.206 paf 1212: if(isspace(pc.source[1])) {
1213: switch(*pc.source) {
1.117 paf 1214: // case '?': // ok [and bad cases, yacc would bark at them]
1215: case 't': // lt gt [et nt]
1216: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1217: skip_analized=1;
1218: goto break2;
1219: case 'e': // le ge ne [ee]
1220: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1221: skip_analized=1;
1222: goto break2;
1223: case 'q': // eq [lq gq nq]
1224: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1225: skip_analized=1;
1226: goto break2;
1227: }
1.67 paf 1228: }
1229: break;
1230: case 'i':
1231: if(end==begin) // right after whitespace
1.206 paf 1232: if(isspace(pc.source[1])) {
1233: switch(pc.source[0]) {
1.117 paf 1234: case 'n': // in
1.95 paf 1235: skip_analized=1;
1236: result=IN;
1237: goto break2;
1.117 paf 1238: case 's': // is
1.95 paf 1239: skip_analized=1;
1240: result=IS;
1241: goto break2;
1242: }
1.67 paf 1243: }
1244: break;
1245: case 'd':
1246: if(end==begin) // right after whitespace
1.206 paf 1247: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.225 misha 1248: switch(pc.source[2]){
1249: case ' ': case '\t': case '\n': case '"': case '\'': case '^': case '$': // non-quoted string without whitespace after 'def' is not allowed
1250: skip_analized=2;
1251: result=DEF;
1252: goto break2;
1253: }
1254: // error: incorrect char after 'def'
1.50 paf 1255: }
1.48 paf 1256: break;
1.216 paf 1257: case 't':
1258: if(end==begin) // right after whitespace
1.225 misha 1259: if(pc.source[0]=='r' && pc.source[1]=='u' && pc.source[2]=='e') { // true
1.216 paf 1260: skip_analized=3;
1261: result=LITERAL_TRUE;
1262: goto break2;
1263: }
1264: break;
1265: case 'f':
1266: if(end==begin) // right after whitespace
1.225 misha 1267: if(pc.source[0]=='a' && pc.source[1]=='l' && pc.source[2]=='s' && pc.source[3]=='e') { // false
1.216 paf 1268: skip_analized=4;
1269: result=LITERAL_FALSE;
1270: goto break2;
1271: }
1272: break;
1.48 paf 1273: case ' ': case '\t': case '\n':
1.63 paf 1274: if(end!=begin) { // there were a string after previous operator?
1275: result=0; // return that string
1276: goto break2;
1.48 paf 1277: }
1.63 paf 1278: // that's a leading|traling space or after-operator-space
1279: // ignoring it
1280: // reset piece 'begin' position & line
1.206 paf 1281: begin=pc.source; // after whitespace char
1282: begin_pos=pc.pos;
1.48 paf 1283: continue;
1.1 paf 1284: }
1285: break;
1.194 paf 1286: case LS_EXPRESSION_COMMENT:
1287: if(c=='(')
1288: lexical_brackets_nestage++;
1289:
1.206 paf 1290: switch(*pc.source) {
1.194 paf 1291: case '\n': case ')':
1.206 paf 1292: if(*pc.source==')')
1.194 paf 1293: if(--lexical_brackets_nestage!=0)
1294: continue;
1295:
1296: // skip comment
1.206 paf 1297: begin=pc.source;
1298: begin_pos=pc.pos;
1.194 paf 1299:
1.206 paf 1300: pop_LS(pc);
1.194 paf 1301: continue;
1302: }
1303: break;
1.1 paf 1304:
1.10 paf 1305: // VARIABLE GET/PUT/WITH
1.166 parser 1306: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1307: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1308: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1309: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1310: if(
1.206 paf 1311: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1312: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1313: // name in expr ends also before
1.48 paf 1314: switch(c) {
1.181 paf 1315: // expression minus
1.92 paf 1316: case '-':
1.181 paf 1317: // expression integer division
1318: case '\\':
1.206 paf 1319: pop_LS(pc);
1320: pc.ungetc();
1.48 paf 1321: result=EON;
1322: goto break2;
1323: }
1324: }
1.166 parser 1325: if(
1.206 paf 1326: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1327: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1328: // name already has ':', stop before next
1329: switch(c) {
1330: case ':':
1.206 paf 1331: pop_LS(pc);
1332: pc.ungetc();
1.142 parser 1333: result=EON;
1334: goto break2;
1335: }
1336: }
1.48 paf 1337: switch(c) {
1338: case 0:
1339: case ' ': case '\t': case '\n':
1340: case ';':
1.126 paf 1341: case ']': case '}': case ')':
1342: case '"': case '\'':
1.139 parser 1343: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.253 misha 1344: case '+': case '*': case '/': case '\\': case '%':
1.92 paf 1345: case '&': case '|':
1346: case '=': case '!':
1.99 paf 1347: // common delimiters
1.190 paf 1348: case ',': case '?': case '#':
1.220 paf 1349: // mysql column separators
1350: case '`':
1.139 parser 1351: // before call
1352: case '^':
1.206 paf 1353: pop_LS(pc);
1354: pc.ungetc();
1.13 paf 1355: result=EON;
1.1 paf 1356: goto break2;
1.48 paf 1357: case '[':
1.162 parser 1358: // $name.<[>code]
1.206 paf 1359: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1360: end[-1]=='$'/*was start of get*/ ||
1361: end[-1]==':'/*was class name delim */ ||
1362: end[-1]=='.'/*was name delim */
1.162 parser 1363: )) {
1.206 paf 1364: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1365: lexical_brackets_nestage=1;
1366: RC;
1367: }
1.206 paf 1368: pc.ls=LS_VAR_SQUARE;
1.1 paf 1369: lexical_brackets_nestage=1;
1.48 paf 1370: RC;
1371: case '{':
1372: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1373: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1374: } else {
1.206 paf 1375: pc.ls=LS_VAR_CURLY;
1.48 paf 1376: lexical_brackets_nestage=1;
1377: }
1.69 paf 1378:
1.48 paf 1379: RC;
1380: case '(':
1.206 paf 1381: pc.ls=LS_VAR_ROUND;
1.1 paf 1382: lexical_brackets_nestage=1;
1.48 paf 1383: RC;
1384: case '.': // name part delim
1385: case '$': // name part subvar
1.160 parser 1386: case ':': // class<:>name
1.166 parser 1387: // go to _WITHOUT_COLON state variant...
1.206 paf 1388: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1389: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1390: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1391: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1392: // ...stop before next ':'
1.48 paf 1393: RC;
1.1 paf 1394: }
1395: break;
1.48 paf 1396:
1.1 paf 1397: case LS_VAR_NAME_CURLY:
1.48 paf 1398: switch(c) {
1.162 parser 1399: case '[':
1.166 parser 1400: // ${name.<[>code]}
1.206 paf 1401: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1402: lexical_brackets_nestage=1;
1403: RC;
1.48 paf 1404: case '}': // ${name} finished, restoring LS
1.206 paf 1405: pop_LS(pc);
1.48 paf 1406: RC;
1407: case '.': // name part delim
1408: case '$': // name part subvar
1409: case ':': // ':name' or 'class:name'
1410: RC;
1.1 paf 1411: }
1412: break;
1.48 paf 1413:
1414: case LS_VAR_SQUARE:
1415: switch(c) {
1416: case '$':
1.206 paf 1417: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1418: RC;
1419: case '^':
1.206 paf 1420: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1421: RC;
1422: case ']':
1.1 paf 1423: if(--lexical_brackets_nestage==0) {
1.206 paf 1424: pop_LS(pc);
1.48 paf 1425: RC;
1.1 paf 1426: }
1.48 paf 1427: break;
1428: case ';': // operator_or_fmt;value delim
1429: RC;
1430: case '[':
1431: lexical_brackets_nestage++;
1432: break;
1.1 paf 1433: }
1434: break;
1.48 paf 1435:
1.1 paf 1436: case LS_VAR_CURLY:
1.48 paf 1437: switch(c) {
1438: case '$':
1.206 paf 1439: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1440: RC;
1441: case '^':
1.206 paf 1442: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1443: RC;
1444: case '}':
1.1 paf 1445: if(--lexical_brackets_nestage==0) {
1.206 paf 1446: pop_LS(pc);
1.48 paf 1447: RC;
1.1 paf 1448: }
1.48 paf 1449: break;
1450: case '{':
1.1 paf 1451: lexical_brackets_nestage++;
1.48 paf 1452: break;
1453: }
1.1 paf 1454: break;
1455:
1.10 paf 1456: // METHOD CALL
1.1 paf 1457: case LS_METHOD_NAME:
1.48 paf 1458: switch(c) {
1459: case '[':
1.166 parser 1460: // ^name.<[>code].xxx
1.206 paf 1461: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1462: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1463: end[-1]==':'/*was class name delim */ ||
1464: end[-1]=='.'/*was name delim */
1.162 parser 1465: )) {
1.206 paf 1466: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1467: lexical_brackets_nestage=1;
1468: RC;
1469: }
1.206 paf 1470: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1471: lexical_brackets_nestage=1;
1.48 paf 1472: RC;
1473: case '{':
1.206 paf 1474: pc.ls=LS_METHOD_CURLY;
1.1 paf 1475: lexical_brackets_nestage=1;
1.48 paf 1476: RC;
1.69 paf 1477: case '(':
1.206 paf 1478: pc.ls=LS_METHOD_ROUND;
1.69 paf 1479: lexical_brackets_nestage=1;
1480: RC;
1.48 paf 1481: case '.': // name part delim
1482: case '$': // name part subvar
1483: case ':': // ':name' or 'class:name'
1.170 parser 1484: case '^': // ^abc^xxx wrong. bailing out
1485: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1486: case ' ': // ^if ( wrong. bailing out
1.48 paf 1487: RC;
1.1 paf 1488: }
1489: break;
1.48 paf 1490:
1491: case LS_METHOD_SQUARE:
1492: switch(c) {
1493: case '$':
1.206 paf 1494: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1495: RC;
1496: case '^':
1.206 paf 1497: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1498: RC;
1499: case ';': // param delim
1500: RC;
1501: case ']':
1.1 paf 1502: if(--lexical_brackets_nestage==0) {
1.206 paf 1503: pc.ls=LS_METHOD_AFTER;
1.48 paf 1504: RC;
1.1 paf 1505: }
1.48 paf 1506: break;
1507: case '[':
1.1 paf 1508: lexical_brackets_nestage++;
1.48 paf 1509: break;
1510: }
1.1 paf 1511: break;
1.48 paf 1512:
1.1 paf 1513: case LS_METHOD_CURLY:
1.48 paf 1514: switch(c) {
1515: case '$':
1.206 paf 1516: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1517: RC;
1518: case '^':
1.206 paf 1519: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1520: RC;
1521: case ';': // param delim
1.48 paf 1522: RC;
1523: case '}':
1.1 paf 1524: if(--lexical_brackets_nestage==0) {
1.206 paf 1525: pc.ls=LS_METHOD_AFTER;
1.48 paf 1526: RC;
1.1 paf 1527: }
1.48 paf 1528: break;
1529: case '{':
1.1 paf 1530: lexical_brackets_nestage++;
1.48 paf 1531: break;
1532: }
1.209 paf 1533: if(pc.explicit_result && c)
1534: switch(c) {
1.276 moko 1535: default:
1536: pc.string.append(c);
1.209 paf 1537: case '\n': case ' ': case '\t':
1538: begin=pc.source;
1539: begin_pos=pc.pos;
1.276 moko 1540: continue;
1.209 paf 1541: }
1.1 paf 1542: break;
1.48 paf 1543:
1.1 paf 1544: case LS_METHOD_AFTER:
1.69 paf 1545: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1546: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1547: lexical_brackets_nestage=1;
1.48 paf 1548: RC;
1.281 moko 1549: }
1.69 paf 1550: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1551: pc.ls=LS_METHOD_CURLY;
1.69 paf 1552: lexical_brackets_nestage=1;
1553: RC;
1.281 moko 1554: }
1.69 paf 1555: if(c=='(') {/* ]( }( )( */
1.206 paf 1556: pc.ls=LS_METHOD_ROUND;
1.1 paf 1557: lexical_brackets_nestage=1;
1.48 paf 1558: RC;
1.281 moko 1559: }
1.206 paf 1560: pop_LS(pc);
1561: pc.ungetc();
1.13 paf 1562: result=EON;
1.1 paf 1563: goto break2;
1564: }
1.9 paf 1565: if(c==0) {
1.1 paf 1566: result=-1;
1567: break;
1568: }
1569: }
1570:
1571: break2:
1.59 paf 1572: if(end!=begin) { // there is last piece?
1.258 misha 1573: if(c=='@' || c==0) // we are before LS_DEF_NAME or EOF?
1574: while(end!=begin && end[-1]=='\n') // trim all empty lines before LS_DEF_NAME and EOF
1.137 parser 1575: end--;
1.206 paf 1576: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1577: if(!pc.string_start)
1578: pc.string_start=begin_pos;
1.59 paf 1579: // append it
1.206 paf 1580: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1581: }
1.59 paf 1582: }
1.206 paf 1583: if(!pc.string.is_empty()) { // something accumulated?
1584: // create STRING value: array of OP_VALUE+origin+vstring
1.278 moko 1585: #ifdef SYMBOLS_CACHING
1586: Value *lookup=symbols->get(pc.string);
1587: #else
1588: Value *lookup=0;
1589: #endif
1.281 moko 1590: *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 1591: // new pieces storage
1.206 paf 1592: pc.string.clear();
1593: pc.string_start.clear();
1.58 paf 1594: // make current result be pending for next call, return STRING for now
1.206 paf 1595: pc.pending_state=result; result=STRING;
1.58 paf 1596: }
1.67 paf 1597: if(skip_analized) {
1.206 paf 1598: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1599: }
1.58 paf 1600: return result;
1.1 paf 1601: }
1602:
1.264 moko 1603: static int real_yyerror(Parse_control *pc, const char *s) { // Called by yyparse on error
1.293 moko 1604: PC.error=pa_strdup(s);
1.281 moko 1605: return 1;
1.110 paf 1606: }
1.1 paf 1607:
1.110 paf 1608: static void yyprint(FILE *file, int type, YYSTYPE value) {
1609: if(type==STRING)
1.206 paf 1610: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1611: }
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