Annotation of parser3/src/main/compile.y, revision 1.282
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:
1.282 ! moko 11: volatile const char * IDENT_COMPILE_Y = "$Id: compile.y,v 1.281 2016/05/25 11:35:15 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 {
1.281 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*/);
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);
1.252 misha 196: if(Value* base_class_value=PC.request.get_class(base_name)) {
1.206 paf 197: // @CLASS == @BASE sanity check
198: if(VStateless_class *base_class=base_class_value->get_class()) {
199: if(PC.cclass==base_class) {
1.268 moko 200: strcpy(PC.error, "@" CLASS_NAME " equals @" BASE_NAME);
1.206 paf 201: YYERROR;
202: }
203: PC.cclass->get_class()->set_base(base_class);
204: } else { // they asked to derive from a class without methods ['env' & co]
1.281 moko 205: PC_ERROR("'", base_name.cstr(), "': you can not derive from this class in @" BASE_NAME);
1.206 paf 206: YYERROR;
207: }
208: } else {
1.281 moko 209: PC_ERROR("'", base_name.cstr(), "': undefined class in @" BASE_NAME);
1.73 paf 210: YYERROR;
211: }
1.34 paf 212: } else {
1.268 moko 213: strcpy(PC.error, "@" BASE_NAME " must contain sole name");
1.34 paf 214: YYERROR;
215: }
1.223 misha 216: } else if(command==OPTIONS_CONTROL_METHOD_NAME) {
217: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE) {
1.260 misha 218: const String& option=LA2S(*strings_code, i)->trim(String::TRIM_END);
1.279 moko 219: if(option==Symbols::LOCALS_SYMBOL){
1.226 misha 220: PC.set_all_vars_local();
1.279 moko 221: } else if(option==Symbols::PARTIAL_SYMBOL){
1.230 misha 222: if(PC.cclass_new){
223: if(VStateless_class* existed=PC.get_existed_class(PC.cclass_new)){
224: if(!PC.reuse_existed_class(existed)){
1.281 moko 225: PC_ERROR("can't append methods to '", PC.cclass_new->type(), "' - the class wasn't marked as partial");
1.230 misha 226: YYERROR;
227: }
1.226 misha 228: } else {
1.256 misha 229: // marks the new class as partial. we will be able to add methods here later.
1.230 misha 230: PC.cclass_new->set_partial();
1.226 misha 231: }
1.230 misha 232: } else {
1.279 moko 233: strcpy(PC.error, "'partial' option should be used straight after @" CLASS_NAME);
1.226 misha 234: YYERROR;
235: }
1.279 moko 236: } else if(option==Symbols::STATIC_SYMBOL){
1.256 misha 237: PC.set_methods_call_type(Method::CT_STATIC);
1.279 moko 238: } else if(option==Symbols::DYNAMIC_SYMBOL){
1.256 misha 239: PC.set_methods_call_type(Method::CT_DYNAMIC);
1.223 misha 240: } else {
1.281 moko 241: PC_ERROR("'", option.cstr(), "' invalid option. valid options are 'partial', 'locals', 'static' and 'dynamic'");
1.223 misha 242: YYERROR;
243: }
244: }
1.130 paf 245: } else {
1.281 moko 246: 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 247: YYERROR;
1.34 paf 248: }
249: };
1.132 paf 250: maybe_control_strings: empty | control_strings;
1.259 misha 251: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2); };
1.37 paf 252: control_string: maybe_string '\n';
253: maybe_string: empty | STRING;
1.34 paf 254:
1.222 misha 255: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n' {
1.265 moko 256: CLASS_ADD;
1.208 paf 257: PC.explicit_result=false;
1.10 paf 258:
259: YYSTYPE params_names_code=$3;
1.206 paf 260: ArrayString* params_names=0;
261: if(int size=params_names_code->count()) {
262: params_names=new ArrayString;
263: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
264: *params_names+=LA2S(*params_names_code, i);
1.75 paf 265: }
1.10 paf 266:
267: YYSTYPE locals_names_code=$4;
1.206 paf 268: ArrayString* locals_names=0;
1.223 misha 269: bool all_vars_local=false;
1.206 paf 270: if(int size=locals_names_code->count()) {
271: locals_names=new ArrayString;
1.208 paf 272: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE) {
273: const String* local_name=LA2S(*locals_names_code, i);
1.279 moko 274: if(SYMBOLS_EQ(*local_name,RESULT_SYMBOL))
1.208 paf 275: PC.explicit_result=true;
1.279 moko 276: else if(SYMBOLS_EQ(*local_name,LOCALS_SYMBOL))
1.223 misha 277: all_vars_local=true;
1.208 paf 278: else
279: *locals_names+=local_name;
280: }
1.75 paf 281: }
1.231 misha 282: if(!all_vars_local && PC.cclass && PC.cclass->is_vars_local())
1.223 misha 283: all_vars_local=true;
1.10 paf 284:
1.208 paf 285: Method* method=new Method(
1.206 paf 286: //name,
1.257 misha 287: GetMethodCallType(PC, *$2),
1.81 paf 288: 0, 0/*min,max numbered_params_count*/,
1.76 paf 289: params_names, locals_names,
1.223 misha 290: 0/*to be filled later in next {} */, 0, all_vars_local);
1.221 misha 291:
1.208 paf 292: *reinterpret_cast<Method**>(&$$)=method;
1.222 misha 293: } maybe_codes {
1.251 misha 294: Method* method=reinterpret_cast<Method*>($7);
1.231 misha 295: // fill in the code
1.251 misha 296: method->parser_code=$8;
1.231 misha 297:
298: // register in class
299: const String& name=*LA2S(*$2);
1.251 misha 300: PC.cclass->set_method(PC.alias_method(name), method);
1.8 paf 301: };
1.10 paf 302:
303: maybe_bracketed_strings: empty | bracketed_maybe_strings;
1.259 misha 304: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2;};
1.10 paf 305: maybe_strings: empty | strings;
1.259 misha 306: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3); };
1.10 paf 307:
308: maybe_comment: empty | STRING;
1.1 paf 309:
310: /* codes */
311:
1.10 paf 312: maybe_codes: empty | codes;
313:
1.259 misha 314: codes: code | codes code { $$=$1; P(*$$, *$2); };
1.81 paf 315: code: write_string | action;
1.209 paf 316: action: get | put | call;
1.1 paf 317:
318: /* get */
319:
1.64 paf 320: get: get_value {
1.238 misha 321: $$=N();
322: YYSTYPE code=$1;
1.247 misha 323: size_t count=code->count();
1.245 misha 324:
1.235 misha 325: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.281 moko 326: if(count!=3 || !change_first(*code, OP::OP_VALUE__GET_ELEMENT, /*=>*/OP::OP_VALUE__GET_ELEMENT__WRITE) )
1.238 misha 327: #endif
1.247 misha 328:
1.245 misha 329: #ifdef OPTIMIZE_BYTECODE_GET_SELF_ELEMENT
1.281 moko 330: if(count!=3 || !change_first(*code, OP::OP_WITH_SELF__VALUE__GET_ELEMENT, /*=>*/OP::OP_WITH_SELF__VALUE__GET_ELEMENT__WRITE) )
1.245 misha 331: #endif
332:
1.239 misha 333: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
1.281 moko 334: if(count!=5 || !change_first(*code, OP::OP_GET_OBJECT_ELEMENT, /*=>*/OP::OP_GET_OBJECT_ELEMENT__WRITE) )
1.239 misha 335: #endif
336:
337: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
1.281 moko 338: if(count!=5 || !change_first(*code, OP::OP_GET_OBJECT_VAR_ELEMENT, /*=>*/OP::OP_GET_OBJECT_VAR_ELEMENT__WRITE) )
1.238 misha 339: #endif
1.267 misha 340:
341: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT__SPECIAL
1.281 moko 342: if(!change(*code, count-1/* last */, OP::OP_GET_ELEMENT__SPECIAL, /*=>*/OP::OP_GET_ELEMENT__SPECIAL__WRITE) )
1.267 misha 343: #endif
344:
1.247 misha 345: {
1.281 moko 346: change_or_append(*code, count-1 /* last */, OP::OP_GET_ELEMENT, /*=>*/OP::OP_GET_ELEMENT__WRITE, /*or */OP::OP_WRITE_VALUE ); /* value=pop; wcontext.write(value) */
1.246 misha 347: }
1.247 misha 348:
1.238 misha 349: P(*$$, *code);
1.1 paf 350: };
1.259 misha 351: get_value: '$' get_name_value { $$=$2; };
1.64 paf 352: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.259 misha 353: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2; };
1.44 paf 354: name_without_curly_rdive:
355: name_without_curly_rdive_read
356: | name_without_curly_rdive_class;
1.19 paf 357: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 358: $$=N();
1.238 misha 359: YYSTYPE diving_code=$1;
1.239 misha 360: size_t count=diving_code->count();
1.247 misha 361:
362: if(maybe_make_self(*$$, *diving_code, count)) {
363: // $self.
364: } else
1.239 misha 365:
366: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
1.247 misha 367: if(maybe_make_get_object_element(*$$, *diving_code, count)){
1.245 misha 368: // optimization for $object.field + ^object.method[
1.247 misha 369: } else
1.238 misha 370: #endif
1.239 misha 371:
372: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
1.247 misha 373: if(maybe_make_get_object_var_element(*$$, *diving_code, count)){
1.245 misha 374: // optimization for $object.$var
1.247 misha 375: } else
1.238 misha 376: #endif
1.239 misha 377:
378: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.281 moko 379: if(count>=4 && (*diving_code)[0].code==OP::OP_VALUE && (*diving_code)[3].code==OP::OP_GET_ELEMENT ){
1.248 misha 380: // optimization
1.239 misha 381: O(*$$,
1.247 misha 382: (PC.in_call_value && count==4)
1.239 misha 383: ? OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR // ^object[ : OP_VALUE+origin+string+OP_GET_ELEMENT => OP_VALUE__GET_ELEMENT_OR_OPERATOR+origin+string
384: : OP::OP_VALUE__GET_ELEMENT // $object : OP_VALUE+origin+string+OP_GET_ELEMENT => OP_VALUE__GET_ELEMENT+origin+string
385: );
386: P(*$$, *diving_code, 1/*offset*/, 2/*limit*/); // copy origin+value
1.247 misha 387: if(count>4)
388: P(*$$, *diving_code, 4); // copy tail
1.239 misha 389: } else {
390: O(*$$, OP::OP_WITH_READ); /* stack: starting context */
391: P(*$$, *diving_code);
392: }
1.233 misha 393: #else
1.247 misha 394: {
1.238 misha 395: O(*$$, OP::OP_WITH_READ); /* stack: starting context */
1.179 paf 396:
1.238 misha 397: // ^if OP_ELEMENT => ^if OP_ELEMENT_OR_OPERATOR
398: // optimized OP_VALUE+origin+string+OP_GET_ELEMENT. => OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
1.239 misha 399: if(PC.in_call_value && count==4)
400: diving_code->put(count-1, OP::OP_GET_ELEMENT_OR_OPERATOR);
1.206 paf 401: P(*$$, *diving_code);
1.239 misha 402: }
1.233 misha 403: #endif
1.22 paf 404: /* diving code; stack: current context */
1.1 paf 405: };
1.259 misha 406: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2); };
407: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2); };
1.1 paf 408:
409: /* put */
410:
1.81 paf 411: put: '$' name_expr_wdive construct {
1.241 misha 412: $$=N();
1.244 misha 413: #ifdef OPTIMIZE_BYTECODE_CONSTRUCT
414: if(maybe_optimize_construct(*$$, *$2, *$3)){
1.246 misha 415: // $a(expr), $.a(expr), $a[value], $.a[value], $self.a[value], $self.a(expr)
1.241 misha 416: } else
417: #endif
418: {
419: P(*$$, *$2); /* stack: context,name */
420: P(*$$, *$3); /* stack: context,name,constructor_value */
421: }
1.20 paf 422: };
1.44 paf 423: name_expr_wdive:
1.157 parser 424: name_expr_wdive_root
425: | name_expr_wdive_write
1.44 paf 426: | name_expr_wdive_class;
1.157 parser 427: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 428: $$=N();
1.238 misha 429: YYSTYPE diving_code=$1;
1.247 misha 430: size_t count=diving_code->count();
431:
432: if(maybe_make_self(*$$, *diving_code, count)) {
433: // $self.
434: } else
435: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.281 moko 436: if(count>=4 && (*diving_code)[0].code==OP::OP_VALUE && (*diving_code)[3].code==OP::OP_GET_ELEMENT ){
1.247 misha 437: O(*$$, OP::OP_WITH_ROOT__VALUE__GET_ELEMENT);
438: P(*$$, *diving_code, 1/*offset*/, 2/*limit*/); // copy origin+value
439: if(count>4)
440: P(*$$, *diving_code, 4); // tail
441: } else
442: #endif
443: {
1.229 misha 444: O(*$$, OP::OP_WITH_ROOT); /* stack: starting context */
1.206 paf 445: P(*$$, *diving_code);
1.23 paf 446: }
447: /* diving code; stack: current context */
1.156 parser 448: };
1.157 parser 449: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 450: $$=N();
1.229 misha 451: O(*$$, OP::OP_WITH_WRITE); /* stack: starting context */
1.206 paf 452: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 453: };
1.259 misha 454: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2); };
1.20 paf 455:
1.244 misha 456: construct:
1.163 parser 457: construct_square
458: | construct_round
459: | construct_curly
1.149 parser 460: ;
1.211 paf 461: construct_square: '[' {
462: // allow $result_or_other_variable[ letters here any time ]
463: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
464: } any_constructor_code_value {
1.213 paf 465: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.211 paf 466: } ']' {
1.149 parser 467: // stack: context, name
1.211 paf 468: $$=$3; // stack: context, name, value
1.229 misha 469: O(*$$, OP::OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 470: }
471: ;
1.149 parser 472: construct_round: '(' expr_value ')' {
1.206 paf 473: $$=N();
1.229 misha 474: O(*$$, OP::OP_PREPARE_TO_EXPRESSION);
1.149 parser 475: // stack: context, name
1.206 paf 476: P(*$$, *$2); // stack: context, name, value
1.229 misha 477: O(*$$, OP::OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 478: }
1.52 paf 479: ;
1.149 parser 480: construct_curly: '{' maybe_codes '}' {
481: // stack: context, name
1.206 paf 482: $$=N();
1.229 misha 483: OA(*$$, OP::OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 484: };
485:
1.55 paf 486: any_constructor_code_value:
1.261 moko 487: empty_value /* optimized $var[] case */
1.52 paf 488: | STRING /* optimized $var[STRING] case */
1.55 paf 489: | constructor_code_value /* $var[something complex] */
1.1 paf 490: ;
1.55 paf 491: constructor_code_value: constructor_code {
1.206 paf 492: $$=N();
1.229 misha 493: OA(*$$, OP::OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 494: /* some code that writes to that context */
495: /* context=pop; stack: context.value() */
1.1 paf 496: };
1.55 paf 497: constructor_code: codes__excluding_sole_str_literal;
1.259 misha 498: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2); };
1.27 paf 499:
1.1 paf 500: /* call */
501:
1.66 paf 502: call: call_value {
1.267 misha 503: size_t count=$1->count();
1.238 misha 504: #ifdef OPTIMIZE_BYTECODE_CUT_REM_OPERATOR
1.267 misha 505: if(count)
1.238 misha 506: #endif
507: {
508: $$=$1; /* stack: value */
1.281 moko 509: if(!change_first(*$$, OP::OP_CONSTRUCT_OBJECT, /*=>*/ OP::OP_CONSTRUCT_OBJECT__WRITE))
510: change_or_append(*$$, count-2 /* second last */, OP::OP_CALL, /*=>*/ OP::OP_CALL__WRITE, /*or */ OP::OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.238 misha 511: }
1.66 paf 512: };
1.177 paf 513: call_value: '^' {
1.281 moko 514: PC.in_call_value=true;
515: }
516: call_name {
517: PC.in_call_value=false;
518: }
519: store_params EON { /* ^field.$method{vasya} */
1.238 misha 520: #ifdef OPTIMIZE_BYTECODE_CUT_REM_OPERATOR
1.242 misha 521: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.238 misha 522: const String* operator_name=LA2S(*$3, 0, OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR);
1.242 misha 523: #else
524: const String* operator_name=LA2S(*$3, 1);
525: #endif
1.279 moko 526: if(operator_name && SYMBOLS_EQ(*operator_name,REM_SYMBOL)){
1.238 misha 527: $$=N();
528: } else
529: #endif
530: {
531: YYSTYPE params_code=$5;
532: if(params_code->count()==3) { // probably [] case. [OP::OP_VALUE+origin+Void]
533: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.261 moko 534: if(const String * string=value->get_string())
535: if(string->is_empty()) // value is empty string?
536: params_code=0; // ^zzz[] case. don't append lone empty param.
1.238 misha 537: }
538: /* stack: context, method_junction */
1.249 misha 539:
540: YYSTYPE var_code=$3;
541: if(
542: var_code->count()==8
1.282 ! moko 543: && ( (*var_code)[0].code==OP::OP_VALUE__GET_CLASS || (*var_code)[0].code==OP::OP_VALUE__GET_BASE_CLASS )
1.249 misha 544: && (*var_code)[3].code==OP::OP_PREPARE_TO_CONSTRUCT_OBJECT
545: && (*var_code)[4].code==OP::OP_VALUE
1.272 moko 546: #ifdef FEATURE_GET_ELEMENT4CALL
547: && (*var_code)[7].code==OP::OP_GET_ELEMENT4CALL
548: #else
1.249 misha 549: && (*var_code)[7].code==OP::OP_GET_ELEMENT
1.272 moko 550: #endif
1.249 misha 551: ){
1.267 misha 552: $$=N();
1.249 misha 553: O(*$$, OP::OP_CONSTRUCT_OBJECT);
554: P(*$$, *var_code, 1/*offset*/, 2/*limit*/); // class name
555: P(*$$, *var_code, 5/*offset*/, 2/*limit*/); // constructor name
556: OA(*$$, params_code);
557: } else
558: {
559: $$=var_code; /* with_xxx,diving code; stack: context,method_junction */
560: OA(*$$, OP::OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
561: }
1.238 misha 562: }
1.1 paf 563: };
564:
1.272 moko 565: call_name: name_without_curly_rdive {
566: #ifdef FEATURE_GET_ELEMENT4CALL
567: size_t count=$1->count();
568: if(count){
569: $$=$1;
570: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
571: !(count==5 && change_first(*$$, OP::OP_GET_OBJECT_ELEMENT, OP::OP_GET_OBJECT_ELEMENT4CALL)) &&
572: #endif
573: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
574: !(count==5 && change_first(*$$, OP::OP_GET_OBJECT_VAR_ELEMENT, OP::OP_GET_OBJECT_VAR_ELEMENT4CALL)) &&
575: #endif
576: !change(*$$, count-1, OP::OP_GET_ELEMENT, OP::OP_GET_ELEMENT4CALL);
577: }
578: #endif
579: };
1.38 paf 580:
1.259 misha 581: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2); };
1.69 paf 582: store_param:
583: store_square_param
584: | store_round_param
585: | store_curly_param
1.31 paf 586: ;
1.210 paf 587: store_square_param: '[' {
1.211 paf 588: // allow ^call[ letters here any time ]
1.210 paf 589: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
590: } store_code_param_parts {
1.213 paf 591: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.259 misha 592: } ']' {$$=$3;};
593: store_round_param: '(' store_expr_param_parts ')' {$$=$2;};
594: store_curly_param: '{' store_curly_param_parts '}' {$$=$2;};
1.69 paf 595: store_code_param_parts:
596: store_code_param_part
1.259 misha 597: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3); }
1.69 paf 598: ;
599: store_expr_param_parts:
600: store_expr_param_part
1.259 misha 601: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3); }
1.69 paf 602: ;
1.94 paf 603: store_curly_param_parts:
604: store_curly_param_part
1.259 misha 605: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3); }
1.94 paf 606: ;
1.120 paf 607: store_code_param_part: code_param_value {
1.32 paf 608: $$=$1;
1.120 paf 609: };
1.214 paf 610: store_expr_param_part: expr_value {
611: YYSTYPE expr_code=$1;
1.215 paf 612: if(expr_code->count()==3
1.234 misha 613: && (*expr_code)[0].code==OP::OP_VALUE) { // optimizing (double/bool/incidently 'string' too) case. [OP::OP_VALUE+origin+Double]. no evaluating
1.214 paf 614: $$=expr_code;
615: } else {
1.238 misha 616: YYSTYPE code=N();
1.229 misha 617: O(*code, OP::OP_PREPARE_TO_EXPRESSION);
1.214 paf 618: P(*code, *expr_code);
1.229 misha 619: O(*code, OP::OP_WRITE_EXPR_RESULT);
1.214 paf 620: $$=N();
1.229 misha 621: OA(*$$, OP::OP_EXPR_CODE__STORE_PARAM, code);
1.214 paf 622: }
1.69 paf 623: };
1.94 paf 624: store_curly_param_part: maybe_codes {
1.206 paf 625: $$=N();
1.229 misha 626: OA(*$$, OP::OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 627: };
1.120 paf 628: code_param_value:
1.261 moko 629: empty_value /* optimized [;...] case */
1.120 paf 630: | STRING /* optimized [STRING] case */
631: | constructor_code_value /* [something complex] */
632: ;
1.1 paf 633:
634: /* name */
635:
1.259 misha 636: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2); };
1.1 paf 637:
1.259 misha 638: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2); };
1.1 paf 639: name_step: name_advance1 '.';
640: name_advance1: name_expr_value {
1.177 paf 641: // we know that name_advance1 not called from ^xxx context
642: // so we'll not check for operator call possibility as we do in name_advance2
643:
1.1 paf 644: /* stack: context */
645: $$=$1; /* stack: context,name */
1.267 misha 646: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT__SPECIAL
647: O(*$$, is_special_element(*$$) ? OP::OP_GET_ELEMENT__SPECIAL : OP::OP_GET_ELEMENT);
648: #else
1.229 misha 649: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.267 misha 650: #endif
1.1 paf 651: };
652: name_advance2: name_expr_value {
653: /* stack: context */
654: $$=$1; /* stack: context,name */
1.267 misha 655: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT__SPECIAL
656: O(*$$, is_special_element(*$$) ? OP::OP_GET_ELEMENT__SPECIAL : OP::OP_GET_ELEMENT);
657: #else
1.229 misha 658: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.267 misha 659: #endif
1.1 paf 660: }
1.4 paf 661: | STRING BOGUS
1.1 paf 662: ;
663: name_expr_value:
1.4 paf 664: STRING /* subname_is_const */
1.1 paf 665: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 666: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 667: | name_square_code_value /* [codes] */
1.1 paf 668: ;
669: name_expr_subvar_value: '$' subvar_ref_name_rdive {
670: $$=$2;
1.229 misha 671: O(*$$, OP::OP_GET_ELEMENT);
1.1 paf 672: };
1.4 paf 673: name_expr_with_subvar_value: STRING subvar_get_writes {
1.238 misha 674: YYSTYPE code;
1.183 paf 675: {
1.206 paf 676: change_string_literal_to_write_string_literal(*(code=$1));
677: P(*code, *$2);
1.183 paf 678: }
1.206 paf 679: $$=N();
1.229 misha 680: OA(*$$, OP::OP_STRING_POOL, code);
1.1 paf 681: };
1.212 paf 682: name_square_code_value: '[' {
683: // allow $result_or_other_variable[ letters here any time ]
684: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
685: } codes {
1.213 paf 686: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.212 paf 687: } ']' {
1.206 paf 688: $$=N();
1.267 misha 689: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT__SPECIAL
690: if(!maybe_append_simple_diving_code(*$$, *$3))
691: #endif
692: {
1.281 moko 693: OA(*$$, OP::OP_OBJECT_POOL, $3); /* stack: empty write context */
694: /* some code that writes to that context */
695: /* context=pop; stack: context.value() */
1.267 misha 696: }
1.160 parser 697: };
1.154 parser 698: subvar_ref_name_rdive: STRING {
1.206 paf 699: $$=N();
1.229 misha 700: O(*$$, OP::OP_WITH_READ);
1.206 paf 701: P(*$$, *$1);
1.1 paf 702: };
1.259 misha 703: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2); };
1.1 paf 704: subvar__get_write: '$' subvar_ref_name_rdive {
705: $$=$2;
1.229 misha 706: O(*$$, OP::OP_GET_ELEMENT__WRITE);
1.42 paf 707: };
708:
1.154 parser 709: class_prefix:
710: class_static_prefix
711: | class_constructor_prefix
712: ;
1.155 parser 713: class_static_prefix: STRING ':' {
714: $$=$1; // stack: class name string
1.282 ! moko 715: OP::OPCODE code = OP::OP_VALUE__GET_CLASS;
1.206 paf 716: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
717: if(VStateless_class* base=PC.cclass->base_class()) {
1.275 moko 718: change_string_literal_value(*$$, *new String(base->type()));
1.189 paf 719: } else {
720: strcpy(PC.error, "no base class declared");
721: YYERROR;
722: }
1.282 ! moko 723: code = OP::OP_VALUE__GET_BASE_CLASS;
! 724: } else {
! 725: Value *base=PC.request.get_class(*LA2S(*$$));
! 726: if(base && PC.cclass->derived_from(*base->get_class()))
! 727: code = OP::OP_VALUE__GET_BASE_CLASS;
1.189 paf 728: }
1.238 misha 729: // optimized OP_VALUE+origin+string+OP_GET_CLASS => OP_VALUE__GET_CLASS+origin+string
1.282 ! moko 730: change_first(*$$, OP::OP_VALUE, code);
1.155 parser 731: };
732: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 733: $$=$1;
1.180 paf 734: if(!PC.in_call_value) {
1.154 parser 735: strcpy(PC.error, ":: not allowed here");
736: YYERROR;
737: }
1.229 misha 738: O(*$$, OP::OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 739: };
740:
1.53 paf 741:
1.56 paf 742: /* expr */
1.53 paf 743:
1.214 paf 744: expr_value: expr;
1.56 paf 745: expr:
1.214 paf 746: double_or_STRING
1.216 paf 747: | true_value
748: | false_value
1.64 paf 749: | get_value
1.66 paf 750: | call_value
1.259 misha 751: | '"' string_inside_quotes_value '"' { $$ = $2; }
752: | '\'' string_inside_quotes_value '\'' { $$ = $2; }
1.60 paf 753: | '(' expr ')' { $$ = $2; }
754: /* stack: operand // stack: @operand */
1.259 misha 755: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP::OP_NEG); }
756: | '+' expr %prec NUNARY { $$=$2; }
757: | '~' expr { $$=$2; O(*$$, OP::OP_INV); }
758: | '!' expr { $$=$2; O(*$$, OP::OP_NOT); }
759: | "def" expr { $$=$2; O(*$$, OP::OP_DEF); }
760: | "in" expr { $$=$2; O(*$$, OP::OP_IN); }
761: | "-f" expr { $$=$2; O(*$$, OP::OP_FEXISTS); }
762: | "-d" expr { $$=$2; O(*$$, OP::OP_DEXISTS); }
1.60 paf 763: /* stack: a,b // stack: a@b */
1.259 misha 764: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_SUB); }
765: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_ADD); }
766: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MUL); }
767: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_DIV); }
768: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MOD); }
769: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_INTDIV); }
770: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SL); }
771: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SR); }
772: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_AND); }
773: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_OR); }
774: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_XOR); }
775: | expr "&&" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_AND); }
776: | expr "||" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_OR); }
777: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_LOG_XOR); }
778: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LT); }
779: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GT); }
780: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LE); }
781: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GE); }
782: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_EQ); }
783: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_NE); }
784: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LT); }
785: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GT); }
786: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LE); }
787: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GE); }
788: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_EQ); }
789: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_NE); }
790: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_IS); }
1.56 paf 791: ;
1.214 paf 792:
793: double_or_STRING: STRING {
1.238 misha 794: // optimized OP_STRING => OP_VALUE for doubles
1.214 paf 795: maybe_change_string_literal_to_double_literal(*($$=$1));
796: };
1.55 paf 797:
1.65 paf 798: string_inside_quotes_value: maybe_codes {
1.238 misha 799: #ifdef OPTIMIZE_BYTECODE_STRING_POOL
800: // it brakes ^if(" 09 "){...}
801: YYSTYPE code=$1;
802: $$=N();
1.267 misha 803: if(code->count()==3 && change_first(*code, OP::OP_STRING__WRITE, OP::OP_VALUE)){
1.238 misha 804: // optimized OP_STRING__WRITE+origin+value => OP_VALUE+origin+value without starting OP_STRING_POOL
805: P(*$$, *code);
806: } else {
807: OA(*$$, OP::OP_STRING_POOL, code); /* stack: empty write context */
808: }
809: #else
1.206 paf 810: $$=N();
1.229 misha 811: OA(*$$, OP::OP_STRING_POOL, $1); /* stack: empty write context */
1.238 misha 812: #endif
1.183 paf 813: /* some code that writes to that context */
814: /* context=pop; stack: context.get_string() */
1.53 paf 815: };
1.1 paf 816:
1.27 paf 817: /* basics */
1.1 paf 818:
1.81 paf 819: write_string: STRING {
1.238 misha 820: // optimized OP_STRING+OP_WRITE_VALUE => OP_STRING__WRITE
1.259 misha 821: change_string_literal_to_write_string_literal(*($$=$1));
1.54 paf 822: };
823:
1.261 moko 824: empty_value: /* empty */ { $$=VL(/*we know that we will not change it*/const_cast<VString*>(&vempty), 0, 0, 0); }
1.259 misha 825: true_value: "true" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vtrue), 0, 0, 0); }
826: false_value: "false" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vfalse), 0, 0, 0); }
1.216 paf 827:
1.259 misha 828: empty: /* empty */ { $$=N(); };
1.1 paf 829:
830: %%
1.105 paf 831: #endif
1.1 paf 832:
833: /*
834: 000$111(2222)00
835: 000$111{3333}00
1.9 paf 836: $,^: push,=0
1.1 paf 837: 1:( { break=pop
838: 2:( ) pop
839: 3:{ } pop
840:
841: 000^111(2222)4444{33333}4000
1.9 paf 842: $,^: push,=0
1.1 paf 843: 1:( { break=pop
844: 2:( )=4
845: 3:{ }=4
846: 4:[^({]=pop
847: */
848:
1.206 paf 849: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
850: pc.source--;
851: if(pc.pos.col==0) {
852: --pc.pos.line; pc.pos.col=last_line_end_col;
853: } else
854: --pc.pos.col;
855:
856: }
857: static int yylex(YYSTYPE *lvalp, void *apc) {
858: register Parse_control& pc=*static_cast<Parse_control*>(apc);
859:
860: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 861: #define RC {result=c; goto break2; }
1.1 paf 862:
1.206 paf 863: register int c;
864: int result;
1.1 paf 865:
1.206 paf 866: if(pc.pending_state) {
867: result=pc.pending_state;
868: pc.pending_state=0;
1.1 paf 869: return result;
870: }
871:
1.206 paf 872: const char *begin=pc.source;
873: Pos begin_pos=pc.pos;
1.91 paf 874: const char *end;
1.67 paf 875: int skip_analized=0;
1.50 paf 876: while(true) {
1.206 paf 877: c=*(end=(pc.source++));
878: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 879:
1.208 paf 880: if(c=='\n')
1.206 paf 881: pc.pos_next_line();
1.208 paf 882: else
1.206 paf 883: pc.pos_next_c(c);
1.208 paf 884: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 885:
1.208 paf 886: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 887: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 888: // @SPECIAL
889: // ...
890: // @<here =
1.206 paf 891: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 892: } // continuing checks
1.206 paf 893: if(pc.ls==LS_USER) {
894: push_LS(pc, LS_DEF_NAME);
1.171 parser 895: RC;
1.175 paf 896: } else // @ in first column inside some code [when could that be?]
1.171 parser 897: result=BAD_METHOD_DECL_START;
898: goto break2;
1.209 paf 899: }
900: if(c=='^') {
1.206 paf 901: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 902: // handle after-method situation
1.206 paf 903: pop_LS(pc);
1.203 paf 904: result=EON;
905: skip_analized=-1; // return to punctuation afterwards to assure it's literality
906: goto break2;
907: }
1.206 paf 908: switch(pc.ls) {
1.169 parser 909: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
910: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
911: case LS_VAR_NAME_SIMPLE_WITH_COLON:
912: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
913: case LS_VAR_NAME_CURLY:
914: case LS_METHOD_NAME:
1.194 paf 915: case LS_USER_COMMENT:
1.169 parser 916: case LS_DEF_COMMENT:
917: // no literals in names, please
918: break;
919: default:
1.206 paf 920: switch(*pc.source) {
1.165 parser 921: // ^escaping some punctuators
1.228 misha 922: case '^': case '$': case ';': case '@':
1.126 paf 923: case '(': case ')':
1.48 paf 924: case '[': case ']':
925: case '{': case '}':
1.172 parser 926: case '"': case ':':
1.40 paf 927: if(end!=begin) {
1.206 paf 928: if(!pc.string_start)
929: pc.string_start=begin_pos;
1.40 paf 930: // append piece till ^
1.206 paf 931: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 932: }
1.63 paf 933: // reset piece 'begin' position & line
1.206 paf 934: begin=pc.source; // ->punctuation
935: begin_pos=pc.pos;
1.203 paf 936: // skip over _ after ^
1.206 paf 937: pc.source++; pc.pos.col++;
1.203 paf 938: // skip analysis = forced literal
939: continue;
1.114 paf 940:
941: // converting ^#HH into char(hex(HH))
942: case '#':
943: if(end!=begin) {
1.206 paf 944: if(!pc.string_start)
945: pc.string_start=begin_pos;
1.114 paf 946: // append piece till ^
1.206 paf 947: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 948: }
949: // #HH ?
1.228 misha 950: if(pc.source[1] && isxdigit(pc.source[1]) && pc.source[2] && isxdigit(pc.source[2])) {
1.218 paf 951: char c=(char)(
1.206 paf 952: hex_value[(unsigned char)pc.source[1]]*0x10+
1.218 paf 953: hex_value[(unsigned char)pc.source[2]]);
1.206 paf 954: if(c==0) {
1.114 paf 955: result=BAD_HEX_LITERAL;
956: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
957: }
958: // append char(hex(HH))
1.206 paf 959: pc.string.append(c);
1.114 paf 960: // skip over ^#HH
1.206 paf 961: pc.source+=3;
962: pc.pos.col+=3;
1.114 paf 963: // reset piece 'begin' position & line
1.206 paf 964: begin=pc.source; // ->after ^#HH
965: begin_pos=pc.pos;
1.203 paf 966: // skip analysis = forced literal
1.114 paf 967: continue;
968: }
1.228 misha 969: // just escaped char
970: // reset piece 'begin' position & line
971: begin=pc.source;
972: begin_pos=pc.pos;
973: // skip over _ after ^
974: pc.source++; pc.pos.col++;
975: // skip analysis = forced literal
976: continue;
1.1 paf 977: }
1.169 parser 978: break;
1.203 paf 979: }
1.169 parser 980: }
1.113 paf 981: // #comment start skipping
1.206 paf 982: if(c=='#' && pc.pos.col==1) {
1.112 paf 983: if(end!=begin) {
1.206 paf 984: if(!pc.string_start)
985: pc.string_start=begin_pos;
1.112 paf 986: // append piece till #
1.206 paf 987: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 988: }
989: // fall into COMMENT lexical state [wait for \n]
1.206 paf 990: push_LS(pc, LS_USER_COMMENT);
1.175 paf 991: continue;
1.112 paf 992: }
1.206 paf 993: switch(pc.ls) {
1.10 paf 994:
995: // USER'S = NOT OURS
1.1 paf 996: case LS_USER:
1.206 paf 997: case LS_NAME_SQUARE_PART: // name.[here].xxx
998: if(pc.trim_bof)
1.153 parser 999: switch(c) {
1000: case '\n': case ' ': case '\t':
1.206 paf 1001: begin=pc.source;
1002: begin_pos=pc.pos;
1.152 parser 1003: continue; // skip it
1.153 parser 1004: default:
1.206 paf 1005: pc.trim_bof=false;
1.152 parser 1006: }
1.48 paf 1007: switch(c) {
1008: case '$':
1.206 paf 1009: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1010: RC;
1011: case '^':
1.206 paf 1012: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1013: RC;
1.166 parser 1014: case ']':
1.206 paf 1015: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 1016: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 1017: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 1018: RC;
1019: }
1.160 parser 1020: break;
1.166 parser 1021: case '[': // $name.[co<[>de]
1.206 paf 1022: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 1023: lexical_brackets_nestage++;
1.161 parser 1024: break;
1.112 paf 1025: }
1.209 paf 1026: if(pc.explicit_result && c)
1027: switch(c) {
1.276 moko 1028: default:
1029: pc.string.append(c);
1.209 paf 1030: case '\n': case ' ': case '\t':
1031: begin=pc.source;
1032: begin_pos=pc.pos;
1.276 moko 1033: continue;
1.209 paf 1034: }
1.112 paf 1035: break;
1036:
1037: // #COMMENT
1.194 paf 1038: case LS_USER_COMMENT:
1.112 paf 1039: if(c=='\n') {
1040: // skip comment
1.206 paf 1041: begin=pc.source;
1042: begin_pos=pc.pos;
1.112 paf 1043:
1.206 paf 1044: pop_LS(pc);
1.112 paf 1045: continue;
1.1 paf 1046: }
1.48 paf 1047: break;
1048:
1049: // STRING IN EXPRESSION
1.145 parser 1050: case LS_EXPRESSION_STRING_QUOTED:
1051: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 1052: switch(c) {
1053: case '"':
1.145 parser 1054: case '\'':
1055: if(
1.270 moko 1056: (pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"') ||
1057: (pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') ) {
1.206 paf 1058: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 1059: RC;
1060: }
1061: break;
1.48 paf 1062: case '$':
1.206 paf 1063: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1064: RC;
1065: case '^':
1.206 paf 1066: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1067: RC;
1.10 paf 1068: }
1069: break;
1070:
1071: // METHOD DEFINITION
1072: case LS_DEF_NAME:
1.48 paf 1073: switch(c) {
1074: case '[':
1.206 paf 1075: pc.ls=LS_DEF_PARAMS;
1.48 paf 1076: RC;
1077: case '\n':
1.206 paf 1078: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 1079: RC;
1.10 paf 1080: }
1081: break;
1.48 paf 1082:
1.10 paf 1083: case LS_DEF_PARAMS:
1.48 paf 1084: switch(c) {
1.192 paf 1085: case '$': // common error
1.193 paf 1086: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
1087: goto break2;
1.48 paf 1088: case ';':
1089: RC;
1090: case ']':
1.206 paf 1091: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 1092: RC;
1.49 paf 1093: case '\n': // wrong. bailing out
1.206 paf 1094: pop_LS(pc);
1.48 paf 1095: RC;
1.10 paf 1096: }
1097: break;
1.48 paf 1098:
1.10 paf 1099: case LS_DEF_LOCALS:
1.48 paf 1100: switch(c) {
1101: case '[':
1102: case ';':
1103: RC;
1104: case ']':
1.206 paf 1105: pc.ls=LS_DEF_COMMENT;
1.48 paf 1106: RC;
1107: case '\n': // wrong. bailing out
1.206 paf 1108: pop_LS(pc);
1.48 paf 1109: RC;
1.10 paf 1110: }
1111: break;
1.48 paf 1112:
1.10 paf 1113: case LS_DEF_COMMENT:
1114: if(c=='\n') {
1.206 paf 1115: pop_LS(pc);
1.48 paf 1116: RC;
1.37 paf 1117: }
1118: break;
1119:
1.48 paf 1120: case LS_DEF_SPECIAL_BODY:
1.175 paf 1121: if(c=='\n')
1.48 paf 1122: RC;
1123: break;
1124:
1125: // (EXPRESSION)
1.69 paf 1126: case LS_VAR_ROUND:
1127: case LS_METHOD_ROUND:
1.48 paf 1128: switch(c) {
1129: case ')':
1.270 moko 1130: if(--lexical_brackets_nestage==0) {
1.206 paf 1131: if(pc.ls==LS_METHOD_ROUND) // method round param ended
1132: pc.ls=LS_METHOD_AFTER; // look for method end
1133: else // pc.ls==LS_VAR_ROUND // variable constructor ended
1134: pop_LS(pc); // return to normal life
1.270 moko 1135: }
1.48 paf 1136: RC;
1.194 paf 1137: case '#': // comment start skipping
1138: if(end!=begin) {
1.206 paf 1139: if(!pc.string_start)
1140: pc.string_start=begin_pos;
1.194 paf 1141: // append piece till #
1.206 paf 1142: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 1143: }
1144: // fall into COMMENT lexical state [wait for \n]
1.206 paf 1145: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 1146: lexical_brackets_nestage=1;
1147: continue;
1.48 paf 1148: case '$':
1.206 paf 1149: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 1150: RC;
1151: case '^':
1.206 paf 1152: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1153: RC;
1154: case '(':
1155: lexical_brackets_nestage++;
1156: RC;
1.67 paf 1157: case '-':
1.206 paf 1158: switch(*pc.source) {
1.127 paf 1159: case 'f': // -f
1.67 paf 1160: skip_analized=1;
1161: result=FEXISTS;
1.127 paf 1162: goto break2;
1163: case 'd': // -d
1164: skip_analized=1;
1165: result=DEXISTS;
1166: goto break2;
1.191 paf 1167: default: // minus
1.67 paf 1168: result=c;
1.127 paf 1169: goto break2;
1170: }
1.67 paf 1171: goto break2;
1.173 paf 1172: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 1173: case '~':
1.48 paf 1174: case ';':
1175: RC;
1.193 paf 1176: case '&': case '|':
1.206 paf 1177: if(*pc.source==c) { // && ||
1.193 paf 1178: result=c=='&'?LAND:LOR;
1.67 paf 1179: skip_analized=1;
1.58 paf 1180: } else
1181: result=c;
1182: goto break2;
1.193 paf 1183: case '!':
1.206 paf 1184: switch(pc.source[0]) {
1.193 paf 1185: case '|': // !| !||
1186: skip_analized=1;
1.206 paf 1187: if(pc.source[1]=='|') {
1.193 paf 1188: skip_analized++;
1189: result=LXOR;
1190: } else
1191: result=NXOR;
1192: goto break2;
1193: case '=': // !=
1194: skip_analized=1;
1195: result=NNE;
1196: goto break2;
1197: }
1198: RC;
1.195 paf 1199:
1200: case '<': // <<, <=, <
1.206 paf 1201: switch(*pc.source) {
1.195 paf 1202: case '<': // <[<]
1203: skip_analized=1; result=NSL; break;
1204: case '=': // <[=]
1205: skip_analized=1; result=NLE; break;
1206: default: // <[]
1207: result=c; break;
1208: }
1209: goto break2;
1210: case '>': // >>, >=, >
1.206 paf 1211: switch(*pc.source) {
1.195 paf 1212: case '>': // >[>]
1213: skip_analized=1; result=NSR; break;
1214: case '=': // >[=]
1215: skip_analized=1; result=NGE; break;
1216: default: // >[]
1217: result=c; break;
1218: }
1219: goto break2;
1220: case '=': // ==
1.206 paf 1221: switch(*pc.source) {
1.195 paf 1222: case '=': // =[=]
1223: skip_analized=1; result=NEQ; break;
1224: default: // =[]
1225: result=c; break; // not used now
1226: }
1.58 paf 1227: goto break2;
1.195 paf 1228:
1.48 paf 1229: case '"':
1.206 paf 1230: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1231: RC;
1232: case '\'':
1.206 paf 1233: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1234: RC;
1.50 paf 1235: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1236: if(end==begin) // right after whitespace
1.206 paf 1237: if(isspace(pc.source[1])) {
1238: switch(*pc.source) {
1.117 paf 1239: // case '?': // ok [and bad cases, yacc would bark at them]
1240: case 't': // lt gt [et nt]
1241: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1242: skip_analized=1;
1243: goto break2;
1244: case 'e': // le ge ne [ee]
1245: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1246: skip_analized=1;
1247: goto break2;
1248: case 'q': // eq [lq gq nq]
1249: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1250: skip_analized=1;
1251: goto break2;
1252: }
1.67 paf 1253: }
1254: break;
1255: case 'i':
1256: if(end==begin) // right after whitespace
1.206 paf 1257: if(isspace(pc.source[1])) {
1258: switch(pc.source[0]) {
1.117 paf 1259: case 'n': // in
1.95 paf 1260: skip_analized=1;
1261: result=IN;
1262: goto break2;
1.117 paf 1263: case 's': // is
1.95 paf 1264: skip_analized=1;
1265: result=IS;
1266: goto break2;
1267: }
1.67 paf 1268: }
1269: break;
1270: case 'd':
1271: if(end==begin) // right after whitespace
1.206 paf 1272: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.225 misha 1273: switch(pc.source[2]){
1274: case ' ': case '\t': case '\n': case '"': case '\'': case '^': case '$': // non-quoted string without whitespace after 'def' is not allowed
1275: skip_analized=2;
1276: result=DEF;
1277: goto break2;
1278: }
1279: // error: incorrect char after 'def'
1.50 paf 1280: }
1.48 paf 1281: break;
1.216 paf 1282: case 't':
1283: if(end==begin) // right after whitespace
1.225 misha 1284: if(pc.source[0]=='r' && pc.source[1]=='u' && pc.source[2]=='e') { // true
1.216 paf 1285: skip_analized=3;
1286: result=LITERAL_TRUE;
1287: goto break2;
1288: }
1289: break;
1290: case 'f':
1291: if(end==begin) // right after whitespace
1.225 misha 1292: if(pc.source[0]=='a' && pc.source[1]=='l' && pc.source[2]=='s' && pc.source[3]=='e') { // false
1.216 paf 1293: skip_analized=4;
1294: result=LITERAL_FALSE;
1295: goto break2;
1296: }
1297: break;
1.48 paf 1298: case ' ': case '\t': case '\n':
1.63 paf 1299: if(end!=begin) { // there were a string after previous operator?
1300: result=0; // return that string
1301: goto break2;
1.48 paf 1302: }
1.63 paf 1303: // that's a leading|traling space or after-operator-space
1304: // ignoring it
1305: // reset piece 'begin' position & line
1.206 paf 1306: begin=pc.source; // after whitespace char
1307: begin_pos=pc.pos;
1.48 paf 1308: continue;
1.1 paf 1309: }
1310: break;
1.194 paf 1311: case LS_EXPRESSION_COMMENT:
1312: if(c=='(')
1313: lexical_brackets_nestage++;
1314:
1.206 paf 1315: switch(*pc.source) {
1.194 paf 1316: case '\n': case ')':
1.206 paf 1317: if(*pc.source==')')
1.194 paf 1318: if(--lexical_brackets_nestage!=0)
1319: continue;
1320:
1321: // skip comment
1.206 paf 1322: begin=pc.source;
1323: begin_pos=pc.pos;
1.194 paf 1324:
1.206 paf 1325: pop_LS(pc);
1.194 paf 1326: continue;
1327: }
1328: break;
1.1 paf 1329:
1.10 paf 1330: // VARIABLE GET/PUT/WITH
1.166 parser 1331: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1332: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1333: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1334: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1335: if(
1.206 paf 1336: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1337: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1338: // name in expr ends also before
1.48 paf 1339: switch(c) {
1.181 paf 1340: // expression minus
1.92 paf 1341: case '-':
1.181 paf 1342: // expression integer division
1343: case '\\':
1.206 paf 1344: pop_LS(pc);
1345: pc.ungetc();
1.48 paf 1346: result=EON;
1347: goto break2;
1348: }
1349: }
1.166 parser 1350: if(
1.206 paf 1351: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1352: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1353: // name already has ':', stop before next
1354: switch(c) {
1355: case ':':
1.206 paf 1356: pop_LS(pc);
1357: pc.ungetc();
1.142 parser 1358: result=EON;
1359: goto break2;
1360: }
1361: }
1.48 paf 1362: switch(c) {
1363: case 0:
1364: case ' ': case '\t': case '\n':
1365: case ';':
1.126 paf 1366: case ']': case '}': case ')':
1367: case '"': case '\'':
1.139 parser 1368: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.253 misha 1369: case '+': case '*': case '/': case '\\': case '%':
1.92 paf 1370: case '&': case '|':
1371: case '=': case '!':
1.99 paf 1372: // common delimiters
1.190 paf 1373: case ',': case '?': case '#':
1.220 paf 1374: // mysql column separators
1375: case '`':
1.139 parser 1376: // before call
1377: case '^':
1.206 paf 1378: pop_LS(pc);
1379: pc.ungetc();
1.13 paf 1380: result=EON;
1.1 paf 1381: goto break2;
1.48 paf 1382: case '[':
1.162 parser 1383: // $name.<[>code]
1.206 paf 1384: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1385: end[-1]=='$'/*was start of get*/ ||
1386: end[-1]==':'/*was class name delim */ ||
1387: end[-1]=='.'/*was name delim */
1.162 parser 1388: )) {
1.206 paf 1389: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1390: lexical_brackets_nestage=1;
1391: RC;
1392: }
1.206 paf 1393: pc.ls=LS_VAR_SQUARE;
1.1 paf 1394: lexical_brackets_nestage=1;
1.48 paf 1395: RC;
1396: case '{':
1397: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1398: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1399: } else {
1.206 paf 1400: pc.ls=LS_VAR_CURLY;
1.48 paf 1401: lexical_brackets_nestage=1;
1402: }
1.69 paf 1403:
1.48 paf 1404: RC;
1405: case '(':
1.206 paf 1406: pc.ls=LS_VAR_ROUND;
1.1 paf 1407: lexical_brackets_nestage=1;
1.48 paf 1408: RC;
1409: case '.': // name part delim
1410: case '$': // name part subvar
1.160 parser 1411: case ':': // class<:>name
1.166 parser 1412: // go to _WITHOUT_COLON state variant...
1.206 paf 1413: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1414: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1415: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1416: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1417: // ...stop before next ':'
1.48 paf 1418: RC;
1.1 paf 1419: }
1420: break;
1.48 paf 1421:
1.1 paf 1422: case LS_VAR_NAME_CURLY:
1.48 paf 1423: switch(c) {
1.162 parser 1424: case '[':
1.166 parser 1425: // ${name.<[>code]}
1.206 paf 1426: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1427: lexical_brackets_nestage=1;
1428: RC;
1.48 paf 1429: case '}': // ${name} finished, restoring LS
1.206 paf 1430: pop_LS(pc);
1.48 paf 1431: RC;
1432: case '.': // name part delim
1433: case '$': // name part subvar
1434: case ':': // ':name' or 'class:name'
1435: RC;
1.1 paf 1436: }
1437: break;
1.48 paf 1438:
1439: case LS_VAR_SQUARE:
1440: switch(c) {
1441: case '$':
1.206 paf 1442: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1443: RC;
1444: case '^':
1.206 paf 1445: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1446: RC;
1447: case ']':
1.1 paf 1448: if(--lexical_brackets_nestage==0) {
1.206 paf 1449: pop_LS(pc);
1.48 paf 1450: RC;
1.1 paf 1451: }
1.48 paf 1452: break;
1453: case ';': // operator_or_fmt;value delim
1454: RC;
1455: case '[':
1456: lexical_brackets_nestage++;
1457: break;
1.1 paf 1458: }
1459: break;
1.48 paf 1460:
1.1 paf 1461: case LS_VAR_CURLY:
1.48 paf 1462: switch(c) {
1463: case '$':
1.206 paf 1464: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1465: RC;
1466: case '^':
1.206 paf 1467: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1468: RC;
1469: case '}':
1.1 paf 1470: if(--lexical_brackets_nestage==0) {
1.206 paf 1471: pop_LS(pc);
1.48 paf 1472: RC;
1.1 paf 1473: }
1.48 paf 1474: break;
1475: case '{':
1.1 paf 1476: lexical_brackets_nestage++;
1.48 paf 1477: break;
1478: }
1.1 paf 1479: break;
1480:
1.10 paf 1481: // METHOD CALL
1.1 paf 1482: case LS_METHOD_NAME:
1.48 paf 1483: switch(c) {
1484: case '[':
1.166 parser 1485: // ^name.<[>code].xxx
1.206 paf 1486: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1487: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1488: end[-1]==':'/*was class name delim */ ||
1489: end[-1]=='.'/*was name delim */
1.162 parser 1490: )) {
1.206 paf 1491: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1492: lexical_brackets_nestage=1;
1493: RC;
1494: }
1.206 paf 1495: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1496: lexical_brackets_nestage=1;
1.48 paf 1497: RC;
1498: case '{':
1.206 paf 1499: pc.ls=LS_METHOD_CURLY;
1.1 paf 1500: lexical_brackets_nestage=1;
1.48 paf 1501: RC;
1.69 paf 1502: case '(':
1.206 paf 1503: pc.ls=LS_METHOD_ROUND;
1.69 paf 1504: lexical_brackets_nestage=1;
1505: RC;
1.48 paf 1506: case '.': // name part delim
1507: case '$': // name part subvar
1508: case ':': // ':name' or 'class:name'
1.170 parser 1509: case '^': // ^abc^xxx wrong. bailing out
1510: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1511: case ' ': // ^if ( wrong. bailing out
1.48 paf 1512: RC;
1.1 paf 1513: }
1514: break;
1.48 paf 1515:
1516: case LS_METHOD_SQUARE:
1517: switch(c) {
1518: case '$':
1.206 paf 1519: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1520: RC;
1521: case '^':
1.206 paf 1522: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1523: RC;
1524: case ';': // param delim
1525: RC;
1526: case ']':
1.1 paf 1527: if(--lexical_brackets_nestage==0) {
1.206 paf 1528: pc.ls=LS_METHOD_AFTER;
1.48 paf 1529: RC;
1.1 paf 1530: }
1.48 paf 1531: break;
1532: case '[':
1.1 paf 1533: lexical_brackets_nestage++;
1.48 paf 1534: break;
1535: }
1.1 paf 1536: break;
1.48 paf 1537:
1.1 paf 1538: case LS_METHOD_CURLY:
1.48 paf 1539: switch(c) {
1540: case '$':
1.206 paf 1541: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1542: RC;
1543: case '^':
1.206 paf 1544: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1545: RC;
1546: case ';': // param delim
1.48 paf 1547: RC;
1548: case '}':
1.1 paf 1549: if(--lexical_brackets_nestage==0) {
1.206 paf 1550: pc.ls=LS_METHOD_AFTER;
1.48 paf 1551: RC;
1.1 paf 1552: }
1.48 paf 1553: break;
1554: case '{':
1.1 paf 1555: lexical_brackets_nestage++;
1.48 paf 1556: break;
1557: }
1.209 paf 1558: if(pc.explicit_result && c)
1559: switch(c) {
1.276 moko 1560: default:
1561: pc.string.append(c);
1.209 paf 1562: case '\n': case ' ': case '\t':
1563: begin=pc.source;
1564: begin_pos=pc.pos;
1.276 moko 1565: continue;
1.209 paf 1566: }
1.1 paf 1567: break;
1.48 paf 1568:
1.1 paf 1569: case LS_METHOD_AFTER:
1.69 paf 1570: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1571: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1572: lexical_brackets_nestage=1;
1.48 paf 1573: RC;
1.281 moko 1574: }
1.69 paf 1575: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1576: pc.ls=LS_METHOD_CURLY;
1.69 paf 1577: lexical_brackets_nestage=1;
1578: RC;
1.281 moko 1579: }
1.69 paf 1580: if(c=='(') {/* ]( }( )( */
1.206 paf 1581: pc.ls=LS_METHOD_ROUND;
1.1 paf 1582: lexical_brackets_nestage=1;
1.48 paf 1583: RC;
1.281 moko 1584: }
1.206 paf 1585: pop_LS(pc);
1586: pc.ungetc();
1.13 paf 1587: result=EON;
1.1 paf 1588: goto break2;
1589: }
1.9 paf 1590: if(c==0) {
1.1 paf 1591: result=-1;
1592: break;
1593: }
1594: }
1595:
1596: break2:
1.59 paf 1597: if(end!=begin) { // there is last piece?
1.258 misha 1598: if(c=='@' || c==0) // we are before LS_DEF_NAME or EOF?
1599: while(end!=begin && end[-1]=='\n') // trim all empty lines before LS_DEF_NAME and EOF
1.137 parser 1600: end--;
1.206 paf 1601: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1602: if(!pc.string_start)
1603: pc.string_start=begin_pos;
1.59 paf 1604: // append it
1.206 paf 1605: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1606: }
1.59 paf 1607: }
1.206 paf 1608: if(!pc.string.is_empty()) { // something accumulated?
1609: // create STRING value: array of OP_VALUE+origin+vstring
1.278 moko 1610: #ifdef SYMBOLS_CACHING
1611: Value *lookup=symbols->get(pc.string);
1612: #else
1613: Value *lookup=0;
1614: #endif
1.281 moko 1615: *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 1616: // new pieces storage
1.206 paf 1617: pc.string.clear();
1618: pc.string_start.clear();
1.58 paf 1619: // make current result be pending for next call, return STRING for now
1.206 paf 1620: pc.pending_state=result; result=STRING;
1.58 paf 1621: }
1.67 paf 1622: if(skip_analized) {
1.206 paf 1623: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1624: }
1.58 paf 1625: return result;
1.1 paf 1626: }
1627:
1.264 moko 1628: static int real_yyerror(Parse_control *pc, const char *s) { // Called by yyparse on error
1.281 moko 1629: strncpy(PC.error, s, MAX_STRING);
1630: return 1;
1.110 paf 1631: }
1.1 paf 1632:
1.110 paf 1633: static void yyprint(FILE *file, int type, YYSTYPE value) {
1634: if(type==STRING)
1.206 paf 1635: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1636: }
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