Annotation of parser3/src/main/compile.y, revision 1.304
1.168 parser 1: %{
1.105 paf 2: /** @file
1.106 paf 3: Parser: compiler(lexical parser and grammar).
4:
1.304 ! moko 5: Copyright (c) 2001-2026 Art. Lebedev Studio (https://www.artlebedev.com)
1.294 moko 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:
1.304 ! moko 11: volatile const char * IDENT_COMPILE_Y = "$Id: compile.y,v 1.303 2026/04/24 13:45:12 moko Exp $";
1.262 moko 12:
1.106 paf 13: /**
14: @todo parser4:
15: - cache compiled code from request to request. to do that...
16: -#: make method definitions, @CLASS, @BASE, @USE instructions,
1.88 paf 17: which would be executed afterwards, and actions
18: now performed at compile time would be delayed to run time.
1.106 paf 19: -#: make cache expiration on time and on disk-change of class source
20: -#: in apache use subpools for compiled class storage
21: -#: in iis make up specialized Pool object for that
1.24 paf 22: */
23:
1.206 paf 24: #define YYSTYPE ArrayOperation*
1.9 paf 25: #define 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:
1.296 moko 65: #define CLASS_ADD if(!PC.class_add()){ \
1.292 moko 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:
1.303 moko 82: %define api.pure
1.271 moko 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 {
1.298 moko 175: YYERROR1("@" CLASS_NAME " must contain only one line with class name (contains more than 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;
1.297 moko 443: PC.array=false; // no need to save current value as if() is right after PC.array=true;
444: } any_constructor_code_values {
1.213 paf 445: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.211 paf 446: } ']' {
1.149 parser 447: // stack: context, name
1.297 moko 448: if(!PC.array){
449: $$=$3; // stack: context, name, value
450: O(*$$, OP::OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
451: } else {
452: $$ = N();
453: OA(*$$, OP::OP_CONSTRUCT_ARRAY, $3);
454: PC.array=false;
455: }
1.81 paf 456: }
457: ;
1.297 moko 458: any_constructor_code_values:
459: any_constructor_code_value { $$ = $1; }
460: | any_constructor_code_values ';' any_constructor_code_value { $$ = $1; P(*$$, *$3); PC.array=true; };
461: ;
1.149 parser 462: construct_round: '(' expr_value ')' {
1.206 paf 463: $$=N();
1.149 parser 464: // stack: context, name
1.206 paf 465: P(*$$, *$2); // stack: context, name, value
1.229 misha 466: O(*$$, OP::OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 467: }
1.52 paf 468: ;
1.149 parser 469: construct_curly: '{' maybe_codes '}' {
470: // stack: context, name
1.206 paf 471: $$=N();
1.229 misha 472: OA(*$$, OP::OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 473: };
474:
1.55 paf 475: any_constructor_code_value:
1.261 moko 476: empty_value /* optimized $var[] case */
1.52 paf 477: | STRING /* optimized $var[STRING] case */
1.55 paf 478: | constructor_code_value /* $var[something complex] */
1.1 paf 479: ;
1.55 paf 480: constructor_code_value: constructor_code {
1.206 paf 481: $$=N();
1.229 misha 482: OA(*$$, OP::OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 483: /* some code that writes to that context */
484: /* context=pop; stack: context.value() */
1.1 paf 485: };
1.55 paf 486: constructor_code: codes__excluding_sole_str_literal;
1.259 misha 487: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2); };
1.27 paf 488:
1.1 paf 489: /* call */
490:
1.66 paf 491: call: call_value {
1.267 misha 492: size_t count=$1->count();
1.238 misha 493: #ifdef OPTIMIZE_BYTECODE_CUT_REM_OPERATOR
1.267 misha 494: if(count)
1.238 misha 495: #endif
496: {
497: $$=$1; /* stack: value */
1.281 moko 498: if(!change_first(*$$, OP::OP_CONSTRUCT_OBJECT, /*=>*/ OP::OP_CONSTRUCT_OBJECT__WRITE))
499: change_or_append(*$$, count-2 /* second last */, OP::OP_CALL, /*=>*/ OP::OP_CALL__WRITE, /*or */ OP::OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.238 misha 500: }
1.66 paf 501: };
1.177 paf 502: call_value: '^' {
1.281 moko 503: PC.in_call_value=true;
504: }
505: call_name {
506: PC.in_call_value=false;
507: }
508: store_params EON { /* ^field.$method{vasya} */
1.238 misha 509: #ifdef OPTIMIZE_BYTECODE_CUT_REM_OPERATOR
1.242 misha 510: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.238 misha 511: const String* operator_name=LA2S(*$3, 0, OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR);
1.242 misha 512: #else
513: const String* operator_name=LA2S(*$3, 1);
514: #endif
1.279 moko 515: if(operator_name && SYMBOLS_EQ(*operator_name,REM_SYMBOL)){
1.238 misha 516: $$=N();
517: } else
518: #endif
519: {
520: YYSTYPE params_code=$5;
521: if(params_code->count()==3) { // probably [] case. [OP::OP_VALUE+origin+Void]
522: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.261 moko 523: if(const String * string=value->get_string())
524: if(string->is_empty()) // value is empty string?
525: params_code=0; // ^zzz[] case. don't append lone empty param.
1.238 misha 526: }
527: /* stack: context, method_junction */
1.249 misha 528:
529: YYSTYPE var_code=$3;
530: if(
531: var_code->count()==8
1.282 moko 532: && ( (*var_code)[0].code==OP::OP_VALUE__GET_CLASS || (*var_code)[0].code==OP::OP_VALUE__GET_BASE_CLASS )
1.249 misha 533: && (*var_code)[3].code==OP::OP_PREPARE_TO_CONSTRUCT_OBJECT
534: && (*var_code)[4].code==OP::OP_VALUE
1.272 moko 535: #ifdef FEATURE_GET_ELEMENT4CALL
536: && (*var_code)[7].code==OP::OP_GET_ELEMENT4CALL
537: #else
1.249 misha 538: && (*var_code)[7].code==OP::OP_GET_ELEMENT
1.272 moko 539: #endif
1.249 misha 540: ){
1.267 misha 541: $$=N();
1.249 misha 542: O(*$$, OP::OP_CONSTRUCT_OBJECT);
543: P(*$$, *var_code, 1/*offset*/, 2/*limit*/); // class name
544: P(*$$, *var_code, 5/*offset*/, 2/*limit*/); // constructor name
545: OA(*$$, params_code);
546: } else
547: {
548: $$=var_code; /* with_xxx,diving code; stack: context,method_junction */
549: OA(*$$, OP::OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
550: }
1.238 misha 551: }
1.1 paf 552: };
553:
1.272 moko 554: call_name: name_without_curly_rdive {
555: #ifdef FEATURE_GET_ELEMENT4CALL
556: size_t count=$1->count();
557: if(count){
558: $$=$1;
559: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
560: !(count==5 && change_first(*$$, OP::OP_GET_OBJECT_ELEMENT, OP::OP_GET_OBJECT_ELEMENT4CALL)) &&
561: #endif
562: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
563: !(count==5 && change_first(*$$, OP::OP_GET_OBJECT_VAR_ELEMENT, OP::OP_GET_OBJECT_VAR_ELEMENT4CALL)) &&
564: #endif
565: !change(*$$, count-1, OP::OP_GET_ELEMENT, OP::OP_GET_ELEMENT4CALL);
566: }
567: #endif
568: };
1.38 paf 569:
1.259 misha 570: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2); };
1.69 paf 571: store_param:
572: store_square_param
573: | store_round_param
574: | store_curly_param
1.31 paf 575: ;
1.210 paf 576: store_square_param: '[' {
1.211 paf 577: // allow ^call[ letters here any time ]
1.210 paf 578: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
579: } store_code_param_parts {
1.213 paf 580: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.259 misha 581: } ']' {$$=$3;};
582: store_round_param: '(' store_expr_param_parts ')' {$$=$2;};
583: store_curly_param: '{' store_curly_param_parts '}' {$$=$2;};
1.69 paf 584: store_code_param_parts:
585: store_code_param_part
1.259 misha 586: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3); }
1.69 paf 587: ;
588: store_expr_param_parts:
589: store_expr_param_part
1.259 misha 590: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3); }
1.69 paf 591: ;
1.94 paf 592: store_curly_param_parts:
593: store_curly_param_part
1.259 misha 594: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3); }
1.94 paf 595: ;
1.120 paf 596: store_code_param_part: code_param_value {
1.32 paf 597: $$=$1;
1.120 paf 598: };
1.214 paf 599: store_expr_param_part: expr_value {
600: YYSTYPE expr_code=$1;
1.215 paf 601: if(expr_code->count()==3
1.234 misha 602: && (*expr_code)[0].code==OP::OP_VALUE) { // optimizing (double/bool/incidently 'string' too) case. [OP::OP_VALUE+origin+Double]. no evaluating
1.214 paf 603: $$=expr_code;
604: } else {
1.238 misha 605: YYSTYPE code=N();
1.214 paf 606: P(*code, *expr_code);
1.229 misha 607: O(*code, OP::OP_WRITE_EXPR_RESULT);
1.214 paf 608: $$=N();
1.229 misha 609: OA(*$$, OP::OP_EXPR_CODE__STORE_PARAM, code);
1.214 paf 610: }
1.69 paf 611: };
1.94 paf 612: store_curly_param_part: maybe_codes {
1.206 paf 613: $$=N();
1.229 misha 614: OA(*$$, OP::OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 615: };
1.120 paf 616: code_param_value:
1.261 moko 617: empty_value /* optimized [;...] case */
1.120 paf 618: | STRING /* optimized [STRING] case */
619: | constructor_code_value /* [something complex] */
620: ;
1.1 paf 621:
622: /* name */
623:
1.259 misha 624: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2); };
1.1 paf 625:
1.259 misha 626: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2); };
1.1 paf 627: name_step: name_advance1 '.';
628: name_advance1: name_expr_value {
1.177 paf 629: // we know that name_advance1 not called from ^xxx context
630: // so we'll not check for operator call possibility as we do in name_advance2
631:
1.1 paf 632: /* stack: context */
633: $$=$1; /* stack: context,name */
1.267 misha 634: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT__SPECIAL
635: O(*$$, is_special_element(*$$) ? OP::OP_GET_ELEMENT__SPECIAL : OP::OP_GET_ELEMENT);
636: #else
1.229 misha 637: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.267 misha 638: #endif
1.1 paf 639: };
640: name_advance2: name_expr_value {
641: /* stack: context */
642: $$=$1; /* stack: context,name */
1.267 misha 643: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT__SPECIAL
644: O(*$$, is_special_element(*$$) ? OP::OP_GET_ELEMENT__SPECIAL : OP::OP_GET_ELEMENT);
645: #else
1.229 misha 646: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.267 misha 647: #endif
1.1 paf 648: }
1.4 paf 649: | STRING BOGUS
1.1 paf 650: ;
651: name_expr_value:
1.4 paf 652: STRING /* subname_is_const */
1.1 paf 653: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 654: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 655: | name_square_code_value /* [codes] */
1.301 moko 656: | name_round_expr_value /* (expr) */
1.1 paf 657: ;
658: name_expr_subvar_value: '$' subvar_ref_name_rdive {
659: $$=$2;
1.229 misha 660: O(*$$, OP::OP_GET_ELEMENT);
1.1 paf 661: };
1.4 paf 662: name_expr_with_subvar_value: STRING subvar_get_writes {
1.238 misha 663: YYSTYPE code;
1.183 paf 664: {
1.206 paf 665: change_string_literal_to_write_string_literal(*(code=$1));
666: P(*code, *$2);
1.183 paf 667: }
1.206 paf 668: $$=N();
1.229 misha 669: OA(*$$, OP::OP_STRING_POOL, code);
1.1 paf 670: };
1.212 paf 671: name_square_code_value: '[' {
672: // allow $result_or_other_variable[ letters here any time ]
673: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
674: } codes {
1.213 paf 675: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.212 paf 676: } ']' {
1.302 moko 677: $$=N();
678: if(!maybe_append_simple_diving_code(*$$, *$3)) {
1.281 moko 679: OA(*$$, OP::OP_OBJECT_POOL, $3); /* stack: empty write context */
680: /* some code that writes to that context */
681: /* context=pop; stack: context.value() */
1.267 misha 682: }
1.160 parser 683: };
1.301 moko 684: name_round_expr_value: '(' expr_value ')' {
685: $$ = N();
686: P(*$$, *$2);
687: };
1.154 parser 688: subvar_ref_name_rdive: STRING {
1.206 paf 689: $$=N();
1.229 misha 690: O(*$$, OP::OP_WITH_READ);
1.206 paf 691: P(*$$, *$1);
1.1 paf 692: };
1.259 misha 693: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2); };
1.1 paf 694: subvar__get_write: '$' subvar_ref_name_rdive {
695: $$=$2;
1.229 misha 696: O(*$$, OP::OP_GET_ELEMENT__WRITE);
1.42 paf 697: };
698:
1.154 parser 699: class_prefix:
700: class_static_prefix
701: | class_constructor_prefix
702: ;
1.155 parser 703: class_static_prefix: STRING ':' {
704: $$=$1; // stack: class name string
1.282 moko 705: OP::OPCODE code = OP::OP_VALUE__GET_CLASS;
1.206 paf 706: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
707: if(VStateless_class* base=PC.cclass->base_class()) {
1.275 moko 708: change_string_literal_value(*$$, *new String(base->type()));
1.189 paf 709: } else {
1.292 moko 710: YYERROR1("no base class declared");
1.189 paf 711: }
1.282 moko 712: code = OP::OP_VALUE__GET_BASE_CLASS;
713: } else {
1.283 moko 714: // can't use get_class because it will call @autouse[] if the class wasn't loaded
715: VStateless_class* base=PC.request.classes().get(*LA2S(*$$));
716: if(base && PC.cclass->derived_from(*base))
1.282 moko 717: code = OP::OP_VALUE__GET_BASE_CLASS;
1.189 paf 718: }
1.238 misha 719: // optimized OP_VALUE+origin+string+OP_GET_CLASS => OP_VALUE__GET_CLASS+origin+string
1.282 moko 720: change_first(*$$, OP::OP_VALUE, code);
1.155 parser 721: };
722: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 723: $$=$1;
1.292 moko 724: if(!PC.in_call_value)
725: YYERROR1(":: not allowed here");
1.229 misha 726: O(*$$, OP::OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 727: };
728:
1.53 paf 729:
1.56 paf 730: /* expr */
1.53 paf 731:
1.214 paf 732: expr_value: expr;
1.56 paf 733: expr:
1.214 paf 734: double_or_STRING
1.216 paf 735: | true_value
736: | false_value
1.64 paf 737: | get_value
1.66 paf 738: | call_value
1.259 misha 739: | '"' string_inside_quotes_value '"' { $$ = $2; }
740: | '\'' string_inside_quotes_value '\'' { $$ = $2; }
1.60 paf 741: | '(' expr ')' { $$ = $2; }
742: /* stack: operand // stack: @operand */
1.259 misha 743: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP::OP_NEG); }
744: | '+' expr %prec NUNARY { $$=$2; }
745: | '~' expr { $$=$2; O(*$$, OP::OP_INV); }
746: | '!' expr { $$=$2; O(*$$, OP::OP_NOT); }
747: | "def" expr { $$=$2; O(*$$, OP::OP_DEF); }
748: | "in" expr { $$=$2; O(*$$, OP::OP_IN); }
749: | "-f" expr { $$=$2; O(*$$, OP::OP_FEXISTS); }
750: | "-d" expr { $$=$2; O(*$$, OP::OP_DEXISTS); }
1.60 paf 751: /* stack: a,b // stack: a@b */
1.259 misha 752: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_SUB); }
753: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_ADD); }
754: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MUL); }
755: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_DIV); }
756: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MOD); }
757: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_INTDIV); }
758: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SL); }
759: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SR); }
760: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_AND); }
761: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_OR); }
762: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_XOR); }
763: | expr "&&" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_AND); }
764: | expr "||" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_OR); }
765: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_LOG_XOR); }
766: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LT); }
767: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GT); }
768: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LE); }
769: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GE); }
770: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_EQ); }
771: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_NE); }
772: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LT); }
773: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GT); }
774: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LE); }
775: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GE); }
776: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_EQ); }
777: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_NE); }
778: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_IS); }
1.56 paf 779: ;
1.214 paf 780:
781: double_or_STRING: STRING {
1.238 misha 782: // optimized OP_STRING => OP_VALUE for doubles
1.214 paf 783: maybe_change_string_literal_to_double_literal(*($$=$1));
784: };
1.55 paf 785:
1.65 paf 786: string_inside_quotes_value: maybe_codes {
1.238 misha 787: #ifdef OPTIMIZE_BYTECODE_STRING_POOL
788: // it brakes ^if(" 09 "){...}
789: YYSTYPE code=$1;
790: $$=N();
1.267 misha 791: if(code->count()==3 && change_first(*code, OP::OP_STRING__WRITE, OP::OP_VALUE)){
1.238 misha 792: // optimized OP_STRING__WRITE+origin+value => OP_VALUE+origin+value without starting OP_STRING_POOL
793: P(*$$, *code);
794: } else {
795: OA(*$$, OP::OP_STRING_POOL, code); /* stack: empty write context */
796: }
797: #else
1.206 paf 798: $$=N();
1.229 misha 799: OA(*$$, OP::OP_STRING_POOL, $1); /* stack: empty write context */
1.238 misha 800: #endif
1.183 paf 801: /* some code that writes to that context */
802: /* context=pop; stack: context.get_string() */
1.53 paf 803: };
1.1 paf 804:
1.27 paf 805: /* basics */
1.1 paf 806:
1.81 paf 807: write_string: STRING {
1.238 misha 808: // optimized OP_STRING+OP_WRITE_VALUE => OP_STRING__WRITE
1.259 misha 809: change_string_literal_to_write_string_literal(*($$=$1));
1.54 paf 810: };
811:
1.261 moko 812: empty_value: /* empty */ { $$=VL(/*we know that we will not change it*/const_cast<VString*>(&vempty), 0, 0, 0); }
1.259 misha 813: true_value: "true" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vtrue), 0, 0, 0); }
814: false_value: "false" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vfalse), 0, 0, 0); }
1.216 paf 815:
1.259 misha 816: empty: /* empty */ { $$=N(); };
1.1 paf 817:
818: %%
1.105 paf 819: #endif
1.1 paf 820:
821: /*
822: 000$111(2222)00
823: 000$111{3333}00
1.9 paf 824: $,^: push,=0
1.1 paf 825: 1:( { break=pop
826: 2:( ) pop
827: 3:{ } pop
828:
829: 000^111(2222)4444{33333}4000
1.9 paf 830: $,^: push,=0
1.1 paf 831: 1:( { break=pop
832: 2:( )=4
833: 3:{ }=4
834: 4:[^({]=pop
835: */
836:
1.206 paf 837: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
838: pc.source--;
839: if(pc.pos.col==0) {
840: --pc.pos.line; pc.pos.col=last_line_end_col;
841: } else
842: --pc.pos.col;
843:
844: }
845: static int yylex(YYSTYPE *lvalp, void *apc) {
1.295 moko 846: Parse_control& pc=*static_cast<Parse_control*>(apc);
1.206 paf 847:
848: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 849: #define RC {result=c; goto break2; }
1.1 paf 850:
1.295 moko 851: int c;
1.206 paf 852: int result;
1.1 paf 853:
1.206 paf 854: if(pc.pending_state) {
855: result=pc.pending_state;
856: pc.pending_state=0;
1.1 paf 857: return result;
858: }
859:
1.206 paf 860: const char *begin=pc.source;
861: Pos begin_pos=pc.pos;
1.91 paf 862: const char *end;
1.67 paf 863: int skip_analized=0;
1.50 paf 864: while(true) {
1.206 paf 865: c=*(end=(pc.source++));
866: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 867:
1.208 paf 868: if(c=='\n')
1.206 paf 869: pc.pos_next_line();
1.208 paf 870: else
1.206 paf 871: pc.pos_next_c(c);
1.208 paf 872: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 873:
1.208 paf 874: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 875: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 876: // @SPECIAL
877: // ...
878: // @<here =
1.206 paf 879: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 880: } // continuing checks
1.206 paf 881: if(pc.ls==LS_USER) {
882: push_LS(pc, LS_DEF_NAME);
1.171 parser 883: RC;
1.175 paf 884: } else // @ in first column inside some code [when could that be?]
1.171 parser 885: result=BAD_METHOD_DECL_START;
886: goto break2;
1.209 paf 887: }
888: if(c=='^') {
1.206 paf 889: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 890: // handle after-method situation
1.206 paf 891: pop_LS(pc);
1.203 paf 892: result=EON;
893: skip_analized=-1; // return to punctuation afterwards to assure it's literality
894: goto break2;
895: }
1.206 paf 896: switch(pc.ls) {
1.169 parser 897: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
898: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
899: case LS_VAR_NAME_SIMPLE_WITH_COLON:
900: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
901: case LS_VAR_NAME_CURLY:
902: case LS_METHOD_NAME:
1.194 paf 903: case LS_USER_COMMENT:
1.169 parser 904: case LS_DEF_COMMENT:
905: // no literals in names, please
906: break;
907: default:
1.206 paf 908: switch(*pc.source) {
1.165 parser 909: // ^escaping some punctuators
1.228 misha 910: case '^': case '$': case ';': case '@':
1.126 paf 911: case '(': case ')':
1.48 paf 912: case '[': case ']':
913: case '{': case '}':
1.172 parser 914: case '"': case ':':
1.40 paf 915: if(end!=begin) {
1.206 paf 916: if(!pc.string_start)
917: pc.string_start=begin_pos;
1.40 paf 918: // append piece till ^
1.206 paf 919: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 920: }
1.63 paf 921: // reset piece 'begin' position & line
1.206 paf 922: begin=pc.source; // ->punctuation
923: begin_pos=pc.pos;
1.203 paf 924: // skip over _ after ^
1.206 paf 925: pc.source++; pc.pos.col++;
1.203 paf 926: // skip analysis = forced literal
927: continue;
1.114 paf 928:
929: // converting ^#HH into char(hex(HH))
930: case '#':
931: if(end!=begin) {
1.206 paf 932: if(!pc.string_start)
933: pc.string_start=begin_pos;
1.114 paf 934: // append piece till ^
1.206 paf 935: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 936: }
937: // #HH ?
1.228 misha 938: if(pc.source[1] && isxdigit(pc.source[1]) && pc.source[2] && isxdigit(pc.source[2])) {
1.218 paf 939: char c=(char)(
1.206 paf 940: hex_value[(unsigned char)pc.source[1]]*0x10+
1.218 paf 941: hex_value[(unsigned char)pc.source[2]]);
1.206 paf 942: if(c==0) {
1.114 paf 943: result=BAD_HEX_LITERAL;
944: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
945: }
946: // append char(hex(HH))
1.206 paf 947: pc.string.append(c);
1.114 paf 948: // skip over ^#HH
1.206 paf 949: pc.source+=3;
950: pc.pos.col+=3;
1.114 paf 951: // reset piece 'begin' position & line
1.206 paf 952: begin=pc.source; // ->after ^#HH
953: begin_pos=pc.pos;
1.203 paf 954: // skip analysis = forced literal
1.114 paf 955: continue;
956: }
1.228 misha 957: // just escaped char
958: // reset piece 'begin' position & line
959: begin=pc.source;
960: begin_pos=pc.pos;
961: // skip over _ after ^
962: pc.source++; pc.pos.col++;
963: // skip analysis = forced literal
964: continue;
1.1 paf 965: }
1.169 parser 966: break;
1.203 paf 967: }
1.169 parser 968: }
1.113 paf 969: // #comment start skipping
1.206 paf 970: if(c=='#' && pc.pos.col==1) {
1.112 paf 971: if(end!=begin) {
1.206 paf 972: if(!pc.string_start)
973: pc.string_start=begin_pos;
1.112 paf 974: // append piece till #
1.206 paf 975: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 976: }
977: // fall into COMMENT lexical state [wait for \n]
1.206 paf 978: push_LS(pc, LS_USER_COMMENT);
1.175 paf 979: continue;
1.112 paf 980: }
1.206 paf 981: switch(pc.ls) {
1.10 paf 982:
983: // USER'S = NOT OURS
1.1 paf 984: case LS_USER:
1.206 paf 985: case LS_NAME_SQUARE_PART: // name.[here].xxx
986: if(pc.trim_bof)
1.153 parser 987: switch(c) {
988: case '\n': case ' ': case '\t':
1.206 paf 989: begin=pc.source;
990: begin_pos=pc.pos;
1.152 parser 991: continue; // skip it
1.153 parser 992: default:
1.206 paf 993: pc.trim_bof=false;
1.152 parser 994: }
1.48 paf 995: switch(c) {
996: case '$':
1.206 paf 997: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 998: RC;
999: case '^':
1.206 paf 1000: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1001: RC;
1.166 parser 1002: case ']':
1.206 paf 1003: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 1004: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 1005: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 1006: RC;
1007: }
1.160 parser 1008: break;
1.166 parser 1009: case '[': // $name.[co<[>de]
1.206 paf 1010: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 1011: lexical_brackets_nestage++;
1.161 parser 1012: break;
1.112 paf 1013: }
1.209 paf 1014: if(pc.explicit_result && c)
1015: switch(c) {
1.276 moko 1016: default:
1017: pc.string.append(c);
1.209 paf 1018: case '\n': case ' ': case '\t':
1019: begin=pc.source;
1020: begin_pos=pc.pos;
1.276 moko 1021: continue;
1.209 paf 1022: }
1.112 paf 1023: break;
1024:
1025: // #COMMENT
1.194 paf 1026: case LS_USER_COMMENT:
1.112 paf 1027: if(c=='\n') {
1028: // skip comment
1.206 paf 1029: begin=pc.source;
1030: begin_pos=pc.pos;
1.112 paf 1031:
1.206 paf 1032: pop_LS(pc);
1.112 paf 1033: continue;
1.1 paf 1034: }
1.48 paf 1035: break;
1036:
1037: // STRING IN EXPRESSION
1.145 parser 1038: case LS_EXPRESSION_STRING_QUOTED:
1039: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 1040: switch(c) {
1041: case '"':
1.145 parser 1042: case '\'':
1043: if(
1.270 moko 1044: (pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"') ||
1045: (pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') ) {
1.206 paf 1046: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 1047: RC;
1048: }
1049: break;
1.48 paf 1050: case '$':
1.206 paf 1051: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1052: RC;
1053: case '^':
1.206 paf 1054: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1055: RC;
1.10 paf 1056: }
1057: break;
1058:
1059: // METHOD DEFINITION
1060: case LS_DEF_NAME:
1.48 paf 1061: switch(c) {
1062: case '[':
1.206 paf 1063: pc.ls=LS_DEF_PARAMS;
1.48 paf 1064: RC;
1065: case '\n':
1.206 paf 1066: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 1067: RC;
1.10 paf 1068: }
1069: break;
1.48 paf 1070:
1.10 paf 1071: case LS_DEF_PARAMS:
1.48 paf 1072: switch(c) {
1.192 paf 1073: case '$': // common error
1.193 paf 1074: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
1075: goto break2;
1.48 paf 1076: case ';':
1077: RC;
1078: case ']':
1.206 paf 1079: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 1080: RC;
1.49 paf 1081: case '\n': // wrong. bailing out
1.206 paf 1082: pop_LS(pc);
1.48 paf 1083: RC;
1.10 paf 1084: }
1085: break;
1.48 paf 1086:
1.10 paf 1087: case LS_DEF_LOCALS:
1.48 paf 1088: switch(c) {
1089: case '[':
1090: case ';':
1091: RC;
1092: case ']':
1.206 paf 1093: pc.ls=LS_DEF_COMMENT;
1.48 paf 1094: RC;
1095: case '\n': // wrong. bailing out
1.206 paf 1096: pop_LS(pc);
1.48 paf 1097: RC;
1.10 paf 1098: }
1099: break;
1.48 paf 1100:
1.10 paf 1101: case LS_DEF_COMMENT:
1102: if(c=='\n') {
1.206 paf 1103: pop_LS(pc);
1.48 paf 1104: RC;
1.37 paf 1105: }
1106: break;
1107:
1.48 paf 1108: case LS_DEF_SPECIAL_BODY:
1.175 paf 1109: if(c=='\n')
1.48 paf 1110: RC;
1111: break;
1112:
1113: // (EXPRESSION)
1.69 paf 1114: case LS_VAR_ROUND:
1115: case LS_METHOD_ROUND:
1.48 paf 1116: switch(c) {
1117: case ')':
1.270 moko 1118: if(--lexical_brackets_nestage==0) {
1.206 paf 1119: if(pc.ls==LS_METHOD_ROUND) // method round param ended
1120: pc.ls=LS_METHOD_AFTER; // look for method end
1121: else // pc.ls==LS_VAR_ROUND // variable constructor ended
1122: pop_LS(pc); // return to normal life
1.270 moko 1123: }
1.48 paf 1124: RC;
1.194 paf 1125: case '#': // comment start skipping
1126: if(end!=begin) {
1.206 paf 1127: if(!pc.string_start)
1128: pc.string_start=begin_pos;
1.194 paf 1129: // append piece till #
1.206 paf 1130: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 1131: }
1132: // fall into COMMENT lexical state [wait for \n]
1.206 paf 1133: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 1134: lexical_brackets_nestage=1;
1135: continue;
1.48 paf 1136: case '$':
1.206 paf 1137: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 1138: RC;
1139: case '^':
1.206 paf 1140: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1141: RC;
1142: case '(':
1143: lexical_brackets_nestage++;
1144: RC;
1.67 paf 1145: case '-':
1.206 paf 1146: switch(*pc.source) {
1.127 paf 1147: case 'f': // -f
1.67 paf 1148: skip_analized=1;
1149: result=FEXISTS;
1.127 paf 1150: goto break2;
1151: case 'd': // -d
1152: skip_analized=1;
1153: result=DEXISTS;
1154: goto break2;
1.191 paf 1155: default: // minus
1.67 paf 1156: result=c;
1.127 paf 1157: goto break2;
1158: }
1.67 paf 1159: goto break2;
1.173 paf 1160: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 1161: case '~':
1.48 paf 1162: case ';':
1163: RC;
1.193 paf 1164: case '&': case '|':
1.206 paf 1165: if(*pc.source==c) { // && ||
1.193 paf 1166: result=c=='&'?LAND:LOR;
1.67 paf 1167: skip_analized=1;
1.58 paf 1168: } else
1169: result=c;
1170: goto break2;
1.193 paf 1171: case '!':
1.206 paf 1172: switch(pc.source[0]) {
1.193 paf 1173: case '|': // !| !||
1174: skip_analized=1;
1.206 paf 1175: if(pc.source[1]=='|') {
1.193 paf 1176: skip_analized++;
1177: result=LXOR;
1178: } else
1179: result=NXOR;
1180: goto break2;
1181: case '=': // !=
1182: skip_analized=1;
1183: result=NNE;
1184: goto break2;
1185: }
1186: RC;
1.195 paf 1187:
1188: case '<': // <<, <=, <
1.206 paf 1189: switch(*pc.source) {
1.195 paf 1190: case '<': // <[<]
1191: skip_analized=1; result=NSL; break;
1192: case '=': // <[=]
1193: skip_analized=1; result=NLE; break;
1194: default: // <[]
1195: result=c; break;
1196: }
1197: goto break2;
1198: case '>': // >>, >=, >
1.206 paf 1199: switch(*pc.source) {
1.195 paf 1200: case '>': // >[>]
1201: skip_analized=1; result=NSR; break;
1202: case '=': // >[=]
1203: skip_analized=1; result=NGE; break;
1204: default: // >[]
1205: result=c; break;
1206: }
1207: goto break2;
1208: case '=': // ==
1.206 paf 1209: switch(*pc.source) {
1.195 paf 1210: case '=': // =[=]
1211: skip_analized=1; result=NEQ; break;
1212: default: // =[]
1213: result=c; break; // not used now
1214: }
1.58 paf 1215: goto break2;
1.195 paf 1216:
1.48 paf 1217: case '"':
1.206 paf 1218: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1219: RC;
1220: case '\'':
1.206 paf 1221: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1222: RC;
1.50 paf 1223: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1224: if(end==begin) // right after whitespace
1.206 paf 1225: if(isspace(pc.source[1])) {
1226: switch(*pc.source) {
1.117 paf 1227: // case '?': // ok [and bad cases, yacc would bark at them]
1228: case 't': // lt gt [et nt]
1229: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1230: skip_analized=1;
1231: goto break2;
1232: case 'e': // le ge ne [ee]
1233: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1234: skip_analized=1;
1235: goto break2;
1236: case 'q': // eq [lq gq nq]
1237: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1238: skip_analized=1;
1239: goto break2;
1240: }
1.67 paf 1241: }
1242: break;
1243: case 'i':
1244: if(end==begin) // right after whitespace
1.206 paf 1245: if(isspace(pc.source[1])) {
1246: switch(pc.source[0]) {
1.117 paf 1247: case 'n': // in
1.95 paf 1248: skip_analized=1;
1249: result=IN;
1250: goto break2;
1.117 paf 1251: case 's': // is
1.95 paf 1252: skip_analized=1;
1253: result=IS;
1254: goto break2;
1255: }
1.67 paf 1256: }
1257: break;
1258: case 'd':
1259: if(end==begin) // right after whitespace
1.206 paf 1260: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.225 misha 1261: switch(pc.source[2]){
1262: case ' ': case '\t': case '\n': case '"': case '\'': case '^': case '$': // non-quoted string without whitespace after 'def' is not allowed
1263: skip_analized=2;
1264: result=DEF;
1265: goto break2;
1266: }
1267: // error: incorrect char after 'def'
1.50 paf 1268: }
1.48 paf 1269: break;
1.216 paf 1270: case 't':
1271: if(end==begin) // right after whitespace
1.225 misha 1272: if(pc.source[0]=='r' && pc.source[1]=='u' && pc.source[2]=='e') { // true
1.216 paf 1273: skip_analized=3;
1274: result=LITERAL_TRUE;
1275: goto break2;
1276: }
1277: break;
1278: case 'f':
1279: if(end==begin) // right after whitespace
1.225 misha 1280: if(pc.source[0]=='a' && pc.source[1]=='l' && pc.source[2]=='s' && pc.source[3]=='e') { // false
1.216 paf 1281: skip_analized=4;
1282: result=LITERAL_FALSE;
1283: goto break2;
1284: }
1285: break;
1.48 paf 1286: case ' ': case '\t': case '\n':
1.63 paf 1287: if(end!=begin) { // there were a string after previous operator?
1288: result=0; // return that string
1289: goto break2;
1.48 paf 1290: }
1.63 paf 1291: // that's a leading|traling space or after-operator-space
1292: // ignoring it
1293: // reset piece 'begin' position & line
1.206 paf 1294: begin=pc.source; // after whitespace char
1295: begin_pos=pc.pos;
1.48 paf 1296: continue;
1.1 paf 1297: }
1298: break;
1.194 paf 1299: case LS_EXPRESSION_COMMENT:
1300: if(c=='(')
1301: lexical_brackets_nestage++;
1302:
1.206 paf 1303: switch(*pc.source) {
1.194 paf 1304: case '\n': case ')':
1.206 paf 1305: if(*pc.source==')')
1.194 paf 1306: if(--lexical_brackets_nestage!=0)
1307: continue;
1308:
1309: // skip comment
1.206 paf 1310: begin=pc.source;
1311: begin_pos=pc.pos;
1.194 paf 1312:
1.206 paf 1313: pop_LS(pc);
1.194 paf 1314: continue;
1315: }
1316: break;
1.1 paf 1317:
1.10 paf 1318: // VARIABLE GET/PUT/WITH
1.166 parser 1319: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1320: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1321: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1322: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1323: if(
1.206 paf 1324: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1325: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1326: // name in expr ends also before
1.48 paf 1327: switch(c) {
1.181 paf 1328: // expression minus
1.92 paf 1329: case '-':
1.181 paf 1330: // expression integer division
1331: case '\\':
1.206 paf 1332: pop_LS(pc);
1333: pc.ungetc();
1.48 paf 1334: result=EON;
1335: goto break2;
1336: }
1337: }
1.166 parser 1338: if(
1.206 paf 1339: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1340: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1341: // name already has ':', stop before next
1342: switch(c) {
1343: case ':':
1.206 paf 1344: pop_LS(pc);
1345: pc.ungetc();
1.142 parser 1346: result=EON;
1347: goto break2;
1348: }
1349: }
1.48 paf 1350: switch(c) {
1351: case 0:
1352: case ' ': case '\t': case '\n':
1353: case ';':
1.126 paf 1354: case ']': case '}': case ')':
1355: case '"': case '\'':
1.139 parser 1356: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.253 misha 1357: case '+': case '*': case '/': case '\\': case '%':
1.92 paf 1358: case '&': case '|':
1359: case '=': case '!':
1.99 paf 1360: // common delimiters
1.190 paf 1361: case ',': case '?': case '#':
1.220 paf 1362: // mysql column separators
1363: case '`':
1.139 parser 1364: // before call
1365: case '^':
1.206 paf 1366: pop_LS(pc);
1367: pc.ungetc();
1.13 paf 1368: result=EON;
1.1 paf 1369: goto break2;
1.48 paf 1370: case '[':
1.162 parser 1371: // $name.<[>code]
1.301 moko 1372: if( end[-1]=='$' /* was start of get */ ||
1373: end[-1]==':' /* was class name delim */ ||
1374: end[-1]=='.' /* was name delim */
1.300 moko 1375: ) {
1.206 paf 1376: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1377: lexical_brackets_nestage=1;
1378: RC;
1379: }
1.206 paf 1380: pc.ls=LS_VAR_SQUARE;
1.1 paf 1381: lexical_brackets_nestage=1;
1.48 paf 1382: RC;
1383: case '{':
1.300 moko 1384: if(end[-1]=='$') { // ${name}, no need of EON, switching LS, not begin==end as $[a]{$b} will fit
1.206 paf 1385: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1386: } else {
1.206 paf 1387: pc.ls=LS_VAR_CURLY;
1.48 paf 1388: lexical_brackets_nestage=1;
1389: }
1.69 paf 1390:
1.48 paf 1391: RC;
1392: case '(':
1.301 moko 1393: // $name.<(>expr)
1394: if( // end[-1]=='$' /* $() excluded */ ||
1395: end[-1]==':' /* was class name delim */ ||
1396: end[-1]=='.' /* was name delim */
1397: ) {
1398: push_LS(pc, LS_VAR_ROUND);
1399: lexical_brackets_nestage=1;
1400: RC;
1401: }
1.206 paf 1402: pc.ls=LS_VAR_ROUND;
1.1 paf 1403: lexical_brackets_nestage=1;
1.48 paf 1404: RC;
1405: case '.': // name part delim
1406: case '$': // name part subvar
1.160 parser 1407: case ':': // class<:>name
1.166 parser 1408: // go to _WITHOUT_COLON state variant...
1.206 paf 1409: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1410: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1411: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1412: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1413: // ...stop before next ':'
1.48 paf 1414: RC;
1.1 paf 1415: }
1416: break;
1.48 paf 1417:
1.1 paf 1418: case LS_VAR_NAME_CURLY:
1.48 paf 1419: switch(c) {
1.162 parser 1420: case '[':
1.166 parser 1421: // ${name.<[>code]}
1.206 paf 1422: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1423: lexical_brackets_nestage=1;
1424: RC;
1.301 moko 1425: case '(':
1426: // ${name.<(>expr)}
1427: push_LS(pc, LS_VAR_ROUND);
1428: lexical_brackets_nestage=1;
1429: RC;
1.48 paf 1430: case '}': // ${name} finished, restoring LS
1.206 paf 1431: pop_LS(pc);
1.48 paf 1432: RC;
1433: case '.': // name part delim
1434: case '$': // name part subvar
1435: case ':': // ':name' or 'class:name'
1436: RC;
1.1 paf 1437: }
1438: break;
1.48 paf 1439:
1440: case LS_VAR_SQUARE:
1441: switch(c) {
1442: case '$':
1.206 paf 1443: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1444: RC;
1445: case '^':
1.206 paf 1446: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1447: RC;
1448: case ']':
1.1 paf 1449: if(--lexical_brackets_nestage==0) {
1.206 paf 1450: pop_LS(pc);
1.48 paf 1451: RC;
1.1 paf 1452: }
1.48 paf 1453: break;
1454: case ';': // operator_or_fmt;value delim
1455: RC;
1456: case '[':
1457: lexical_brackets_nestage++;
1458: break;
1.1 paf 1459: }
1460: break;
1.48 paf 1461:
1.1 paf 1462: case LS_VAR_CURLY:
1.48 paf 1463: switch(c) {
1464: case '$':
1.206 paf 1465: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1466: RC;
1467: case '^':
1.206 paf 1468: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1469: RC;
1470: case '}':
1.1 paf 1471: if(--lexical_brackets_nestage==0) {
1.206 paf 1472: pop_LS(pc);
1.48 paf 1473: RC;
1.1 paf 1474: }
1.48 paf 1475: break;
1476: case '{':
1.1 paf 1477: lexical_brackets_nestage++;
1.48 paf 1478: break;
1479: }
1.1 paf 1480: break;
1481:
1.10 paf 1482: // METHOD CALL
1.1 paf 1483: case LS_METHOD_NAME:
1.48 paf 1484: switch(c) {
1485: case '[':
1.301 moko 1486: // ^name.<[>code]
1487: if( // end[-1]=='^' /* never, ^[ is literal */ ||
1488: end[-1]==':' /* was class name delim */ ||
1489: end[-1]=='.' /* was name delim */
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 '(':
1.301 moko 1503: // ^name.<(>expr)
1504: if( // end[-1]=='^' /* never, ^( is literal */ ||
1505: end[-1]==':' /* was class name delim */ ||
1506: end[-1]=='.' /* was name delim */
1507: ) {
1508: push_LS(pc, LS_VAR_ROUND);
1509: lexical_brackets_nestage=1;
1510: RC;
1511: }
1.206 paf 1512: pc.ls=LS_METHOD_ROUND;
1.69 paf 1513: lexical_brackets_nestage=1;
1514: RC;
1.48 paf 1515: case '.': // name part delim
1516: case '$': // name part subvar
1517: case ':': // ':name' or 'class:name'
1.170 parser 1518: case '^': // ^abc^xxx wrong. bailing out
1519: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1520: case ' ': // ^if ( wrong. bailing out
1.48 paf 1521: RC;
1.1 paf 1522: }
1523: break;
1.48 paf 1524:
1525: case LS_METHOD_SQUARE:
1526: switch(c) {
1527: case '$':
1.206 paf 1528: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1529: RC;
1530: case '^':
1.206 paf 1531: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1532: RC;
1533: case ';': // param delim
1534: RC;
1535: case ']':
1.1 paf 1536: if(--lexical_brackets_nestage==0) {
1.206 paf 1537: pc.ls=LS_METHOD_AFTER;
1.48 paf 1538: RC;
1.1 paf 1539: }
1.48 paf 1540: break;
1541: case '[':
1.1 paf 1542: lexical_brackets_nestage++;
1.48 paf 1543: break;
1544: }
1.1 paf 1545: break;
1.48 paf 1546:
1.1 paf 1547: case LS_METHOD_CURLY:
1.48 paf 1548: switch(c) {
1549: case '$':
1.206 paf 1550: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1551: RC;
1552: case '^':
1.206 paf 1553: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1554: RC;
1555: case ';': // param delim
1.48 paf 1556: RC;
1557: case '}':
1.1 paf 1558: if(--lexical_brackets_nestage==0) {
1.206 paf 1559: pc.ls=LS_METHOD_AFTER;
1.48 paf 1560: RC;
1.1 paf 1561: }
1.48 paf 1562: break;
1563: case '{':
1.1 paf 1564: lexical_brackets_nestage++;
1.48 paf 1565: break;
1566: }
1.209 paf 1567: if(pc.explicit_result && c)
1568: switch(c) {
1.276 moko 1569: default:
1570: pc.string.append(c);
1.209 paf 1571: case '\n': case ' ': case '\t':
1572: begin=pc.source;
1573: begin_pos=pc.pos;
1.276 moko 1574: continue;
1.209 paf 1575: }
1.1 paf 1576: break;
1.48 paf 1577:
1.1 paf 1578: case LS_METHOD_AFTER:
1.69 paf 1579: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1580: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1581: lexical_brackets_nestage=1;
1.48 paf 1582: RC;
1.281 moko 1583: }
1.69 paf 1584: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1585: pc.ls=LS_METHOD_CURLY;
1.69 paf 1586: lexical_brackets_nestage=1;
1587: RC;
1.281 moko 1588: }
1.69 paf 1589: if(c=='(') {/* ]( }( )( */
1.206 paf 1590: pc.ls=LS_METHOD_ROUND;
1.1 paf 1591: lexical_brackets_nestage=1;
1.48 paf 1592: RC;
1.281 moko 1593: }
1.206 paf 1594: pop_LS(pc);
1595: pc.ungetc();
1.13 paf 1596: result=EON;
1.1 paf 1597: goto break2;
1598: }
1.9 paf 1599: if(c==0) {
1.1 paf 1600: result=-1;
1601: break;
1602: }
1603: }
1604:
1605: break2:
1.59 paf 1606: if(end!=begin) { // there is last piece?
1.258 misha 1607: if(c=='@' || c==0) // we are before LS_DEF_NAME or EOF?
1608: while(end!=begin && end[-1]=='\n') // trim all empty lines before LS_DEF_NAME and EOF
1.137 parser 1609: end--;
1.206 paf 1610: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1611: if(!pc.string_start)
1612: pc.string_start=begin_pos;
1.59 paf 1613: // append it
1.206 paf 1614: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1615: }
1.59 paf 1616: }
1.206 paf 1617: if(!pc.string.is_empty()) { // something accumulated?
1618: // create STRING value: array of OP_VALUE+origin+vstring
1.278 moko 1619: #ifdef SYMBOLS_CACHING
1620: Value *lookup=symbols->get(pc.string);
1621: #else
1622: Value *lookup=0;
1623: #endif
1.281 moko 1624: *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 1625: // new pieces storage
1.206 paf 1626: pc.string.clear();
1627: pc.string_start.clear();
1.58 paf 1628: // make current result be pending for next call, return STRING for now
1.206 paf 1629: pc.pending_state=result; result=STRING;
1.58 paf 1630: }
1.67 paf 1631: if(skip_analized) {
1.206 paf 1632: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1633: }
1.58 paf 1634: return result;
1.1 paf 1635: }
1636:
1.264 moko 1637: static int real_yyerror(Parse_control *pc, const char *s) { // Called by yyparse on error
1.293 moko 1638: PC.error=pa_strdup(s);
1.281 moko 1639: return 1;
1.110 paf 1640: }
1.1 paf 1641:
1.110 paf 1642: static void yyprint(FILE *file, int type, YYSTYPE value) {
1643: if(type==STRING)
1.206 paf 1644: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1645: }
E-mail:
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to compile.y CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [parser3project] / parser3 / src / main