Annotation of parser3/src/main/compile.y, revision 1.307
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:
1.306 moko 11: volatile const char * IDENT_COMPILE_Y = "$Id: compile.y,v 1.305 2026/09/19 22:35:27 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(pc, msg) real_yyerror(pc, msg)
1.9 paf 27: #define YYPRINT(file, type, value) yyprint(file, type, value)
1.269 moko 28: #define YYMALLOC pa_malloc
29: #define YYFREE pa_free
1.1 paf 30:
1.206 paf 31: // includes
32:
1.1 paf 33: #include "compile_tools.h"
1.8 paf 34: #include "pa_value.h"
1.12 paf 35: #include "pa_request.h"
1.39 paf 36: #include "pa_vobject.h"
1.52 paf 37: #include "pa_vdouble.h"
1.98 paf 38: #include "pa_globals.h"
1.200 paf 39: #include "pa_vmethod_frame.h"
1.39 paf 40:
1.305 moko 41: // Windows headers define IN
42: #ifdef IN
43: #undef IN
44: #endif
45:
1.206 paf 46: // defines
47:
1.280 moko 48: #define CLASS_NAME "CLASS"
1.97 paf 49: #define USE_CONTROL_METHOD_NAME "USE"
1.226 misha 50: #define OPTIONS_CONTROL_METHOD_NAME "OPTIONS"
1.1 paf 51:
1.206 paf 52: // forwards
53:
1.264 moko 54: static int real_yyerror(Parse_control* pc, const char* s);
1.206 paf 55: static void yyprint(FILE* file, int type, YYSTYPE value);
56: static int yylex(YYSTYPE* lvalp, void* pc);
1.1 paf 57:
1.216 paf 58: static const VBool vfalse(false);
59: static const VBool vtrue(true);
1.261 moko 60: static const VString vempty;
1.216 paf 61:
1.8 paf 62: // local convinient inplace typecast & var
1.205 paf 63: #undef PC
1.271 moko 64: #define PC (*pc)
1.206 paf 65: #undef POOL
1.114 paf 66: #define POOL (*PC.pool)
1.107 paf 67: #ifndef DOXYGEN
1.265 moko 68:
1.296 moko 69: #define CLASS_ADD if(!PC.class_add()){ \
1.292 moko 70: PC.error=pa_strcat(PC.cclass->type(), " - class is already defined"); \
71: YYERROR; \
1.281 moko 72: }
73:
1.292 moko 74: #define YYERROR3(header, value, footer) { \
75: PC.error=pa_strcat(header, value, footer); \
76: YYERROR; \
77: }
78:
79: #define YYERROR1(value) { \
80: PC.error=value; \
81: YYERROR; \
1.265 moko 82: }
83:
1.1 paf 84: %}
85:
1.303 moko 86: %define api.pure
1.306 moko 87: %define parse.error verbose
1.271 moko 88: %lex-param {Parse_control* pc}
89: %parse-param {Parse_control* pc}
1.1 paf 90:
1.13 paf 91: %token EON
1.4 paf 92: %token STRING
1.1 paf 93: %token BOGUS
1.55 paf 94:
1.58 paf 95: %token BAD_STRING_COMPARISON_OPERATOR
1.114 paf 96: %token BAD_HEX_LITERAL
1.171 parser 97: %token BAD_METHOD_DECL_START
1.193 paf 98: %token BAD_METHOD_PARAMETER_NAME_CHARACTER
1.58 paf 99:
1.59 paf 100: %token LAND "&&"
1.58 paf 101: %token LOR "||"
1.193 paf 102: %token LXOR "!||"
103: %token NXOR "!|"
1.58 paf 104:
105: %token NLE "<="
106: %token NGE ">="
107: %token NEQ "=="
108: %token NNE "!="
1.195 paf 109: %token NSL "<<"
110: %token NSR ">>"
1.58 paf 111:
112: %token SLT "lt"
113: %token SGT "gt"
114: %token SLE "le"
115: %token SGE "ge"
116: %token SEQ "eq"
117: %token SNE "ne"
118:
1.67 paf 119: %token DEF "def"
120: %token IN "in"
121: %token FEXISTS "-f"
1.127 paf 122: %token DEXISTS "-d"
1.95 paf 123: %token IS "is"
1.67 paf 124:
1.216 paf 125: %token LITERAL_TRUE "true"
126: %token LITERAL_FALSE "false"
127:
1.57 paf 128: /* logical */
1.193 paf 129: %left "!||"
1.57 paf 130: %left "||"
131: %left "&&"
1.131 paf 132: %left '<' '>' "<=" ">=" "lt" "gt" "le" "ge"
133: %left "==" "!=" "eq" "ne"
134: %left "is" "def" "in" "-f" "-d"
1.57 paf 135:
136: /* bitwise */
1.193 paf 137: %left "!|"
1.131 paf 138: %left '|'
139: %left '&'
1.202 paf 140: %left "<<" ">>"
1.57 paf 141:
1.56 paf 142: /* numerical */
1.202 paf 143: %left '+' '-'
144: %left '*' '/' '\\' '%'
145: %left NUNARY /* unary - + */
146:
147: /* out-of-group */
148: %left '~' /* bitwise */
149: %left '!' /* logical */
1.1 paf 150:
151: %%
1.195 paf 152: all:
1.10 paf 153: one_big_piece {
1.284 moko 154: 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 155: PC.cclass->set_method(PC.alias_method(main_method_name), method);
1.307 ! moko 156: RECORD(MAIN, &PC.alias_method(main_method_name), method);
1.10 paf 157: }
158: | methods;
159:
160: methods: method | methods method;
161: one_big_piece: maybe_codes;
162:
1.34 paf 163: method: control_method | code_method;
164:
165: control_method: '@' STRING '\n'
1.132 paf 166: maybe_control_strings {
1.260 misha 167: const String& command=LA2S(*$2)->trim(String::TRIM_END);
1.34 paf 168: YYSTYPE strings_code=$4;
1.292 moko 169: if(strings_code->count()<1*OPERATIONS_PER_OPVALUE)
170: YYERROR3("@", command.cstr(), " is empty");
1.74 paf 171: if(command==CLASS_NAME) {
1.206 paf 172: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.265 moko 173: CLASS_ADD;
1.73 paf 174: // new class' name
1.260 misha 175: const String& name=LA2S(*strings_code)->trim(String::TRIM_END);
1.73 paf 176: // creating the class
1.288 moko 177: VStateless_class* cclass=new VClass(name.cstr(), PC.request.get_used_filespec(PC.file_no));
1.226 misha 178: PC.cclass_new=cclass;
1.266 misha 179: PC.append=false;
1.307 ! moko 180: RECORD(CLASS, &name);
1.73 paf 181: } else {
1.298 moko 182: YYERROR1("@" CLASS_NAME " must contain only one line with class name (contains more than one)");
1.34 paf 183: }
1.130 paf 184: } else if(command==USE_CONTROL_METHOD_NAME) {
1.265 moko 185: CLASS_ADD;
1.273 moko 186: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE){
1.307 ! moko 187: const String& file_name=LA2S(*strings_code, i)->trim(String::TRIM_END);
! 188: PC.request.use_file(file_name, PC.request.get_used_filespec(PC.file_no), strings_code->get(i+1).origin);
! 189: RECORD_USE(&file_name, strings_code->get(i+1).origin);
1.273 moko 190: }
1.130 paf 191: } else if(command==BASE_NAME) {
1.292 moko 192: if(PC.append)
193: YYERROR3("can't set base while appending methods to class '", PC.cclass->type(), "'");
1.265 moko 194: CLASS_ADD;
1.292 moko 195: if(PC.cclass->base_class()) // already changed from default?
196: YYERROR3("class already have a base '", PC.cclass->base_class()->type(), "'");
1.206 paf 197: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.260 misha 198: const String& base_name=LA2S(*strings_code)->trim(String::TRIM_END);
1.283 moko 199: if(VStateless_class *base_class=PC.request.get_class(base_name)) {
1.206 paf 200: // @CLASS == @BASE sanity check
1.292 moko 201: if(PC.cclass==base_class)
202: YYERROR1("@" CLASS_NAME " equals @" BASE_NAME);
1.283 moko 203: PC.cclass->get_class()->set_base(base_class);
1.307 ! moko 204: RECORD(BASE, &base_name);
1.206 paf 205: } else {
1.292 moko 206: YYERROR3("'", base_name.cstr(), "': undefined class in @" BASE_NAME);
1.73 paf 207: }
1.34 paf 208: } else {
1.292 moko 209: YYERROR1("@" BASE_NAME " must contain sole name");
1.34 paf 210: }
1.223 misha 211: } else if(command==OPTIONS_CONTROL_METHOD_NAME) {
212: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE) {
1.260 misha 213: const String& option=LA2S(*strings_code, i)->trim(String::TRIM_END);
1.279 moko 214: if(option==Symbols::LOCALS_SYMBOL){
1.226 misha 215: PC.set_all_vars_local();
1.279 moko 216: } else if(option==Symbols::PARTIAL_SYMBOL){
1.230 misha 217: if(PC.cclass_new){
218: if(VStateless_class* existed=PC.get_existed_class(PC.cclass_new)){
1.292 moko 219: if(!PC.reuse_existed_class(existed))
220: YYERROR3("can't append methods to '", PC.cclass_new->type(), "' - the class wasn't marked as partial");
1.226 misha 221: } else {
1.256 misha 222: // marks the new class as partial. we will be able to add methods here later.
1.230 misha 223: PC.cclass_new->set_partial();
1.226 misha 224: }
1.230 misha 225: } else {
1.292 moko 226: YYERROR1("'partial' option should be used straight after @" CLASS_NAME);
1.226 misha 227: }
1.279 moko 228: } else if(option==Symbols::STATIC_SYMBOL){
1.256 misha 229: PC.set_methods_call_type(Method::CT_STATIC);
1.279 moko 230: } else if(option==Symbols::DYNAMIC_SYMBOL){
1.256 misha 231: PC.set_methods_call_type(Method::CT_DYNAMIC);
1.223 misha 232: } else {
1.292 moko 233: YYERROR3("'", option.cstr(), "' invalid option. valid options are 'partial', 'locals', 'static' and 'dynamic'");
1.223 misha 234: }
1.307 ! moko 235: RECORD(OPTION, &option);
1.223 misha 236: }
1.130 paf 237: } else {
1.292 moko 238: 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 239: }
240: };
1.132 paf 241: maybe_control_strings: empty | control_strings;
1.259 misha 242: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2); };
1.37 paf 243: control_string: maybe_string '\n';
244: maybe_string: empty | STRING;
1.34 paf 245:
1.222 misha 246: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n' {
1.265 moko 247: CLASS_ADD;
1.208 paf 248: PC.explicit_result=false;
1.10 paf 249:
250: YYSTYPE params_names_code=$3;
1.206 paf 251: ArrayString* params_names=0;
252: if(int size=params_names_code->count()) {
253: params_names=new ArrayString;
254: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
255: *params_names+=LA2S(*params_names_code, i);
1.75 paf 256: }
1.10 paf 257:
258: YYSTYPE locals_names_code=$4;
1.206 paf 259: ArrayString* locals_names=0;
1.284 moko 260: bool all_vars_local=PC.cclass->is_vars_local();
261:
1.206 paf 262: if(int size=locals_names_code->count()) {
263: locals_names=new ArrayString;
1.208 paf 264: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE) {
265: const String* local_name=LA2S(*locals_names_code, i);
1.279 moko 266: if(SYMBOLS_EQ(*local_name,RESULT_SYMBOL))
1.208 paf 267: PC.explicit_result=true;
1.279 moko 268: else if(SYMBOLS_EQ(*local_name,LOCALS_SYMBOL))
1.223 misha 269: all_vars_local=true;
1.208 paf 270: else
271: *locals_names+=local_name;
272: }
1.75 paf 273: }
1.10 paf 274:
1.208 paf 275: Method* method=new Method(
1.206 paf 276: //name,
1.257 misha 277: GetMethodCallType(PC, *$2),
1.81 paf 278: 0, 0/*min,max numbered_params_count*/,
1.76 paf 279: params_names, locals_names,
1.223 misha 280: 0/*to be filled later in next {} */, 0, all_vars_local);
1.221 misha 281:
1.208 paf 282: *reinterpret_cast<Method**>(&$$)=method;
1.222 misha 283: } maybe_codes {
1.251 misha 284: Method* method=reinterpret_cast<Method*>($7);
1.231 misha 285: // fill in the code
1.251 misha 286: method->parser_code=$8;
1.231 misha 287:
288: // register in class
289: const String& name=*LA2S(*$2);
1.251 misha 290: PC.cclass->set_method(PC.alias_method(name), method);
1.307 ! moko 291: RECORD(METHOD, &PC.alias_method(name), method);
1.8 paf 292: };
1.10 paf 293:
294: maybe_bracketed_strings: empty | bracketed_maybe_strings;
1.259 misha 295: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2;};
1.10 paf 296: maybe_strings: empty | strings;
1.259 misha 297: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3); };
1.10 paf 298:
299: maybe_comment: empty | STRING;
1.1 paf 300:
301: /* codes */
302:
1.10 paf 303: maybe_codes: empty | codes;
304:
1.259 misha 305: codes: code | codes code { $$=$1; P(*$$, *$2); };
1.81 paf 306: code: write_string | action;
1.209 paf 307: action: get | put | call;
1.1 paf 308:
309: /* get */
310:
1.64 paf 311: get: get_value {
1.238 misha 312: $$=N();
313: YYSTYPE code=$1;
1.247 misha 314: size_t count=code->count();
1.245 misha 315:
1.235 misha 316: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.281 moko 317: if(count!=3 || !change_first(*code, OP::OP_VALUE__GET_ELEMENT, /*=>*/OP::OP_VALUE__GET_ELEMENT__WRITE) )
1.238 misha 318: #endif
1.247 misha 319:
1.245 misha 320: #ifdef OPTIMIZE_BYTECODE_GET_SELF_ELEMENT
1.281 moko 321: if(count!=3 || !change_first(*code, OP::OP_WITH_SELF__VALUE__GET_ELEMENT, /*=>*/OP::OP_WITH_SELF__VALUE__GET_ELEMENT__WRITE) )
1.245 misha 322: #endif
323:
1.239 misha 324: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
1.281 moko 325: if(count!=5 || !change_first(*code, OP::OP_GET_OBJECT_ELEMENT, /*=>*/OP::OP_GET_OBJECT_ELEMENT__WRITE) )
1.239 misha 326: #endif
327:
328: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
1.281 moko 329: if(count!=5 || !change_first(*code, OP::OP_GET_OBJECT_VAR_ELEMENT, /*=>*/OP::OP_GET_OBJECT_VAR_ELEMENT__WRITE) )
1.238 misha 330: #endif
1.267 misha 331:
332: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT__SPECIAL
1.281 moko 333: if(!change(*code, count-1/* last */, OP::OP_GET_ELEMENT__SPECIAL, /*=>*/OP::OP_GET_ELEMENT__SPECIAL__WRITE) )
1.267 misha 334: #endif
335:
1.247 misha 336: {
1.281 moko 337: change_or_append(*code, count-1 /* last */, OP::OP_GET_ELEMENT, /*=>*/OP::OP_GET_ELEMENT__WRITE, /*or */OP::OP_WRITE_VALUE ); /* value=pop; wcontext.write(value) */
1.246 misha 338: }
1.247 misha 339:
1.238 misha 340: P(*$$, *code);
1.1 paf 341: };
1.259 misha 342: get_value: '$' get_name_value { $$=$2; };
1.64 paf 343: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.259 misha 344: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2; };
1.44 paf 345: name_without_curly_rdive:
346: name_without_curly_rdive_read
347: | name_without_curly_rdive_class;
1.19 paf 348: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 349: $$=N();
1.238 misha 350: YYSTYPE diving_code=$1;
1.239 misha 351: size_t count=diving_code->count();
1.247 misha 352:
353: if(maybe_make_self(*$$, *diving_code, count)) {
354: // $self.
355: } else
1.239 misha 356:
357: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
1.247 misha 358: if(maybe_make_get_object_element(*$$, *diving_code, count)){
1.245 misha 359: // optimization for $object.field + ^object.method[
1.247 misha 360: } else
1.238 misha 361: #endif
1.239 misha 362:
363: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
1.247 misha 364: if(maybe_make_get_object_var_element(*$$, *diving_code, count)){
1.245 misha 365: // optimization for $object.$var
1.247 misha 366: } else
1.238 misha 367: #endif
1.239 misha 368:
369: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.281 moko 370: if(count>=4 && (*diving_code)[0].code==OP::OP_VALUE && (*diving_code)[3].code==OP::OP_GET_ELEMENT ){
1.248 misha 371: // optimization
1.239 misha 372: O(*$$,
1.247 misha 373: (PC.in_call_value && count==4)
1.239 misha 374: ? OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR // ^object[ : OP_VALUE+origin+string+OP_GET_ELEMENT => OP_VALUE__GET_ELEMENT_OR_OPERATOR+origin+string
375: : OP::OP_VALUE__GET_ELEMENT // $object : OP_VALUE+origin+string+OP_GET_ELEMENT => OP_VALUE__GET_ELEMENT+origin+string
376: );
377: P(*$$, *diving_code, 1/*offset*/, 2/*limit*/); // copy origin+value
1.247 misha 378: if(count>4)
379: P(*$$, *diving_code, 4); // copy tail
1.239 misha 380: } else {
381: O(*$$, OP::OP_WITH_READ); /* stack: starting context */
382: P(*$$, *diving_code);
383: }
1.233 misha 384: #else
1.247 misha 385: {
1.238 misha 386: O(*$$, OP::OP_WITH_READ); /* stack: starting context */
1.179 paf 387:
1.238 misha 388: // ^if OP_ELEMENT => ^if OP_ELEMENT_OR_OPERATOR
389: // optimized OP_VALUE+origin+string+OP_GET_ELEMENT. => OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
1.239 misha 390: if(PC.in_call_value && count==4)
391: diving_code->put(count-1, OP::OP_GET_ELEMENT_OR_OPERATOR);
1.206 paf 392: P(*$$, *diving_code);
1.239 misha 393: }
1.233 misha 394: #endif
1.22 paf 395: /* diving code; stack: current context */
1.1 paf 396: };
1.259 misha 397: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2); };
398: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2); };
1.1 paf 399:
400: /* put */
401:
1.81 paf 402: put: '$' name_expr_wdive construct {
1.241 misha 403: $$=N();
1.244 misha 404: #ifdef OPTIMIZE_BYTECODE_CONSTRUCT
405: if(maybe_optimize_construct(*$$, *$2, *$3)){
1.246 misha 406: // $a(expr), $.a(expr), $a[value], $.a[value], $self.a[value], $self.a(expr)
1.241 misha 407: } else
408: #endif
409: {
410: P(*$$, *$2); /* stack: context,name */
411: P(*$$, *$3); /* stack: context,name,constructor_value */
412: }
1.20 paf 413: };
1.44 paf 414: name_expr_wdive:
1.157 parser 415: name_expr_wdive_root
416: | name_expr_wdive_write
1.44 paf 417: | name_expr_wdive_class;
1.157 parser 418: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 419: $$=N();
1.238 misha 420: YYSTYPE diving_code=$1;
1.247 misha 421: size_t count=diving_code->count();
422:
423: if(maybe_make_self(*$$, *diving_code, count)) {
424: // $self.
425: } else
426: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.281 moko 427: if(count>=4 && (*diving_code)[0].code==OP::OP_VALUE && (*diving_code)[3].code==OP::OP_GET_ELEMENT ){
1.247 misha 428: O(*$$, OP::OP_WITH_ROOT__VALUE__GET_ELEMENT);
429: P(*$$, *diving_code, 1/*offset*/, 2/*limit*/); // copy origin+value
430: if(count>4)
431: P(*$$, *diving_code, 4); // tail
432: } else
433: #endif
434: {
1.229 misha 435: O(*$$, OP::OP_WITH_ROOT); /* stack: starting context */
1.206 paf 436: P(*$$, *diving_code);
1.23 paf 437: }
438: /* diving code; stack: current context */
1.156 parser 439: };
1.157 parser 440: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 441: $$=N();
1.229 misha 442: O(*$$, OP::OP_WITH_WRITE); /* stack: starting context */
1.206 paf 443: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 444: };
1.259 misha 445: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2); };
1.20 paf 446:
1.244 misha 447: construct:
1.163 parser 448: construct_square
449: | construct_round
450: | construct_curly
1.149 parser 451: ;
1.211 paf 452: construct_square: '[' {
453: // allow $result_or_other_variable[ letters here any time ]
454: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
1.297 moko 455: PC.array=false; // no need to save current value as if() is right after PC.array=true;
456: } any_constructor_code_values {
1.213 paf 457: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.211 paf 458: } ']' {
1.149 parser 459: // stack: context, name
1.297 moko 460: if(!PC.array){
461: $$=$3; // stack: context, name, value
462: O(*$$, OP::OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
463: } else {
464: $$ = N();
465: OA(*$$, OP::OP_CONSTRUCT_ARRAY, $3);
466: PC.array=false;
467: }
1.81 paf 468: }
469: ;
1.297 moko 470: any_constructor_code_values:
471: any_constructor_code_value { $$ = $1; }
472: | any_constructor_code_values ';' any_constructor_code_value { $$ = $1; P(*$$, *$3); PC.array=true; };
473: ;
1.149 parser 474: construct_round: '(' expr_value ')' {
1.206 paf 475: $$=N();
1.149 parser 476: // stack: context, name
1.206 paf 477: P(*$$, *$2); // stack: context, name, value
1.229 misha 478: O(*$$, OP::OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 479: }
1.52 paf 480: ;
1.149 parser 481: construct_curly: '{' maybe_codes '}' {
482: // stack: context, name
1.206 paf 483: $$=N();
1.229 misha 484: OA(*$$, OP::OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 485: };
486:
1.55 paf 487: any_constructor_code_value:
1.261 moko 488: empty_value /* optimized $var[] case */
1.52 paf 489: | STRING /* optimized $var[STRING] case */
1.55 paf 490: | constructor_code_value /* $var[something complex] */
1.1 paf 491: ;
1.55 paf 492: constructor_code_value: constructor_code {
1.206 paf 493: $$=N();
1.229 misha 494: OA(*$$, OP::OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 495: /* some code that writes to that context */
496: /* context=pop; stack: context.value() */
1.1 paf 497: };
1.55 paf 498: constructor_code: codes__excluding_sole_str_literal;
1.259 misha 499: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2); };
1.27 paf 500:
1.1 paf 501: /* call */
502:
1.66 paf 503: call: call_value {
1.267 misha 504: size_t count=$1->count();
1.238 misha 505: #ifdef OPTIMIZE_BYTECODE_CUT_REM_OPERATOR
1.267 misha 506: if(count)
1.238 misha 507: #endif
508: {
509: $$=$1; /* stack: value */
1.281 moko 510: if(!change_first(*$$, OP::OP_CONSTRUCT_OBJECT, /*=>*/ OP::OP_CONSTRUCT_OBJECT__WRITE))
511: change_or_append(*$$, count-2 /* second last */, OP::OP_CALL, /*=>*/ OP::OP_CALL__WRITE, /*or */ OP::OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.238 misha 512: }
1.66 paf 513: };
1.177 paf 514: call_value: '^' {
1.281 moko 515: PC.in_call_value=true;
516: }
517: call_name {
518: PC.in_call_value=false;
519: }
520: store_params EON { /* ^field.$method{vasya} */
1.238 misha 521: #ifdef OPTIMIZE_BYTECODE_CUT_REM_OPERATOR
1.242 misha 522: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.238 misha 523: const String* operator_name=LA2S(*$3, 0, OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR);
1.242 misha 524: #else
525: const String* operator_name=LA2S(*$3, 1);
526: #endif
1.279 moko 527: if(operator_name && SYMBOLS_EQ(*operator_name,REM_SYMBOL)){
1.238 misha 528: $$=N();
529: } else
530: #endif
531: {
532: YYSTYPE params_code=$5;
533: if(params_code->count()==3) { // probably [] case. [OP::OP_VALUE+origin+Void]
534: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.261 moko 535: if(const String * string=value->get_string())
536: if(string->is_empty()) // value is empty string?
537: params_code=0; // ^zzz[] case. don't append lone empty param.
1.238 misha 538: }
539: /* stack: context, method_junction */
1.249 misha 540:
541: YYSTYPE var_code=$3;
542: if(
543: var_code->count()==8
1.282 moko 544: && ( (*var_code)[0].code==OP::OP_VALUE__GET_CLASS || (*var_code)[0].code==OP::OP_VALUE__GET_BASE_CLASS )
1.249 misha 545: && (*var_code)[3].code==OP::OP_PREPARE_TO_CONSTRUCT_OBJECT
546: && (*var_code)[4].code==OP::OP_VALUE
1.272 moko 547: #ifdef FEATURE_GET_ELEMENT4CALL
548: && (*var_code)[7].code==OP::OP_GET_ELEMENT4CALL
549: #else
1.249 misha 550: && (*var_code)[7].code==OP::OP_GET_ELEMENT
1.272 moko 551: #endif
1.249 misha 552: ){
1.267 misha 553: $$=N();
1.249 misha 554: O(*$$, OP::OP_CONSTRUCT_OBJECT);
555: P(*$$, *var_code, 1/*offset*/, 2/*limit*/); // class name
556: P(*$$, *var_code, 5/*offset*/, 2/*limit*/); // constructor name
557: OA(*$$, params_code);
558: } else
559: {
560: $$=var_code; /* with_xxx,diving code; stack: context,method_junction */
561: OA(*$$, OP::OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
562: }
1.238 misha 563: }
1.1 paf 564: };
565:
1.272 moko 566: call_name: name_without_curly_rdive {
567: #ifdef FEATURE_GET_ELEMENT4CALL
568: size_t count=$1->count();
569: if(count){
570: $$=$1;
571: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
572: !(count==5 && change_first(*$$, OP::OP_GET_OBJECT_ELEMENT, OP::OP_GET_OBJECT_ELEMENT4CALL)) &&
573: #endif
574: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
575: !(count==5 && change_first(*$$, OP::OP_GET_OBJECT_VAR_ELEMENT, OP::OP_GET_OBJECT_VAR_ELEMENT4CALL)) &&
576: #endif
577: !change(*$$, count-1, OP::OP_GET_ELEMENT, OP::OP_GET_ELEMENT4CALL);
578: }
579: #endif
580: };
1.38 paf 581:
1.259 misha 582: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2); };
1.69 paf 583: store_param:
584: store_square_param
585: | store_round_param
586: | store_curly_param
1.31 paf 587: ;
1.210 paf 588: store_square_param: '[' {
1.211 paf 589: // allow ^call[ letters here any time ]
1.210 paf 590: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
591: } store_code_param_parts {
1.213 paf 592: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.259 misha 593: } ']' {$$=$3;};
594: store_round_param: '(' store_expr_param_parts ')' {$$=$2;};
595: store_curly_param: '{' store_curly_param_parts '}' {$$=$2;};
1.69 paf 596: store_code_param_parts:
597: store_code_param_part
1.259 misha 598: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3); }
1.69 paf 599: ;
600: store_expr_param_parts:
601: store_expr_param_part
1.259 misha 602: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3); }
1.69 paf 603: ;
1.94 paf 604: store_curly_param_parts:
605: store_curly_param_part
1.259 misha 606: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3); }
1.94 paf 607: ;
1.120 paf 608: store_code_param_part: code_param_value {
1.32 paf 609: $$=$1;
1.120 paf 610: };
1.214 paf 611: store_expr_param_part: expr_value {
612: YYSTYPE expr_code=$1;
1.215 paf 613: if(expr_code->count()==3
1.234 misha 614: && (*expr_code)[0].code==OP::OP_VALUE) { // optimizing (double/bool/incidently 'string' too) case. [OP::OP_VALUE+origin+Double]. no evaluating
1.214 paf 615: $$=expr_code;
616: } else {
1.238 misha 617: YYSTYPE code=N();
1.214 paf 618: P(*code, *expr_code);
1.229 misha 619: O(*code, OP::OP_WRITE_EXPR_RESULT);
1.214 paf 620: $$=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(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.267 misha 659: #endif
1.1 paf 660: }
1.4 paf 661: | STRING BOGUS
1.1 paf 662: ;
663: name_expr_value:
1.4 paf 664: STRING /* subname_is_const */
1.1 paf 665: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 666: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 667: | name_square_code_value /* [codes] */
1.301 moko 668: | name_round_expr_value /* (expr) */
1.1 paf 669: ;
670: name_expr_subvar_value: '$' subvar_ref_name_rdive {
671: $$=$2;
1.229 misha 672: O(*$$, OP::OP_GET_ELEMENT);
1.1 paf 673: };
1.4 paf 674: name_expr_with_subvar_value: STRING subvar_get_writes {
1.238 misha 675: YYSTYPE code;
1.183 paf 676: {
1.206 paf 677: change_string_literal_to_write_string_literal(*(code=$1));
678: P(*code, *$2);
1.183 paf 679: }
1.206 paf 680: $$=N();
1.229 misha 681: OA(*$$, OP::OP_STRING_POOL, code);
1.1 paf 682: };
1.212 paf 683: name_square_code_value: '[' {
684: // allow $result_or_other_variable[ letters here any time ]
685: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
686: } codes {
1.213 paf 687: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.212 paf 688: } ']' {
1.302 moko 689: $$=N();
690: if(!maybe_append_simple_diving_code(*$$, *$3)) {
1.281 moko 691: OA(*$$, OP::OP_OBJECT_POOL, $3); /* stack: empty write context */
692: /* some code that writes to that context */
693: /* context=pop; stack: context.value() */
1.267 misha 694: }
1.160 parser 695: };
1.301 moko 696: name_round_expr_value: '(' expr_value ')' {
697: $$ = N();
698: P(*$$, *$2);
699: };
1.154 parser 700: subvar_ref_name_rdive: STRING {
1.206 paf 701: $$=N();
1.229 misha 702: O(*$$, OP::OP_WITH_READ);
1.206 paf 703: P(*$$, *$1);
1.1 paf 704: };
1.259 misha 705: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2); };
1.1 paf 706: subvar__get_write: '$' subvar_ref_name_rdive {
707: $$=$2;
1.229 misha 708: O(*$$, OP::OP_GET_ELEMENT__WRITE);
1.42 paf 709: };
710:
1.154 parser 711: class_prefix:
712: class_static_prefix
713: | class_constructor_prefix
714: ;
1.155 parser 715: class_static_prefix: STRING ':' {
716: $$=$1; // stack: class name string
1.282 moko 717: OP::OPCODE code = OP::OP_VALUE__GET_CLASS;
1.206 paf 718: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
719: if(VStateless_class* base=PC.cclass->base_class()) {
1.275 moko 720: change_string_literal_value(*$$, *new String(base->type()));
1.189 paf 721: } else {
1.292 moko 722: YYERROR1("no base class declared");
1.189 paf 723: }
1.282 moko 724: code = OP::OP_VALUE__GET_BASE_CLASS;
725: } else {
1.283 moko 726: // can't use get_class because it will call @autouse[] if the class wasn't loaded
727: VStateless_class* base=PC.request.classes().get(*LA2S(*$$));
728: if(base && PC.cclass->derived_from(*base))
1.282 moko 729: code = OP::OP_VALUE__GET_BASE_CLASS;
1.189 paf 730: }
1.238 misha 731: // optimized OP_VALUE+origin+string+OP_GET_CLASS => OP_VALUE__GET_CLASS+origin+string
1.282 moko 732: change_first(*$$, OP::OP_VALUE, code);
1.155 parser 733: };
734: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 735: $$=$1;
1.292 moko 736: if(!PC.in_call_value)
737: YYERROR1(":: not allowed here");
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) {
1.295 moko 858: Parse_control& pc=*static_cast<Parse_control*>(apc);
1.206 paf 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:
1.295 moko 863: int c;
1.206 paf 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: // $name.<[>code]
1.301 moko 1384: if( end[-1]=='$' /* was start of get */ ||
1385: end[-1]==':' /* was class name delim */ ||
1386: end[-1]=='.' /* was name delim */
1.300 moko 1387: ) {
1.206 paf 1388: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1389: lexical_brackets_nestage=1;
1390: RC;
1391: }
1.206 paf 1392: pc.ls=LS_VAR_SQUARE;
1.1 paf 1393: lexical_brackets_nestage=1;
1.48 paf 1394: RC;
1395: case '{':
1.300 moko 1396: if(end[-1]=='$') { // ${name}, no need of EON, switching LS, not begin==end as $[a]{$b} will fit
1.206 paf 1397: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1398: } else {
1.206 paf 1399: pc.ls=LS_VAR_CURLY;
1.48 paf 1400: lexical_brackets_nestage=1;
1401: }
1.69 paf 1402:
1.48 paf 1403: RC;
1404: case '(':
1.301 moko 1405: // $name.<(>expr)
1406: if( // end[-1]=='$' /* $() excluded */ ||
1407: end[-1]==':' /* was class name delim */ ||
1408: end[-1]=='.' /* was name delim */
1409: ) {
1410: push_LS(pc, LS_VAR_ROUND);
1411: lexical_brackets_nestage=1;
1412: RC;
1413: }
1.206 paf 1414: pc.ls=LS_VAR_ROUND;
1.1 paf 1415: lexical_brackets_nestage=1;
1.48 paf 1416: RC;
1417: case '.': // name part delim
1418: case '$': // name part subvar
1.160 parser 1419: case ':': // class<:>name
1.166 parser 1420: // go to _WITHOUT_COLON state variant...
1.206 paf 1421: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1422: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1423: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1424: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1425: // ...stop before next ':'
1.48 paf 1426: RC;
1.1 paf 1427: }
1428: break;
1.48 paf 1429:
1.1 paf 1430: case LS_VAR_NAME_CURLY:
1.48 paf 1431: switch(c) {
1.162 parser 1432: case '[':
1.166 parser 1433: // ${name.<[>code]}
1.206 paf 1434: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1435: lexical_brackets_nestage=1;
1436: RC;
1.301 moko 1437: case '(':
1438: // ${name.<(>expr)}
1439: push_LS(pc, LS_VAR_ROUND);
1440: lexical_brackets_nestage=1;
1441: RC;
1.48 paf 1442: case '}': // ${name} finished, restoring LS
1.206 paf 1443: pop_LS(pc);
1.48 paf 1444: RC;
1445: case '.': // name part delim
1446: case '$': // name part subvar
1447: case ':': // ':name' or 'class:name'
1448: RC;
1.1 paf 1449: }
1450: break;
1.48 paf 1451:
1452: case LS_VAR_SQUARE:
1453: switch(c) {
1454: case '$':
1.206 paf 1455: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1456: RC;
1457: case '^':
1.206 paf 1458: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1459: RC;
1460: case ']':
1.1 paf 1461: if(--lexical_brackets_nestage==0) {
1.206 paf 1462: pop_LS(pc);
1.48 paf 1463: RC;
1.1 paf 1464: }
1.48 paf 1465: break;
1466: case ';': // operator_or_fmt;value delim
1467: RC;
1468: case '[':
1469: lexical_brackets_nestage++;
1470: break;
1.1 paf 1471: }
1472: break;
1.48 paf 1473:
1.1 paf 1474: case LS_VAR_CURLY:
1.48 paf 1475: switch(c) {
1476: case '$':
1.206 paf 1477: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1478: RC;
1479: case '^':
1.206 paf 1480: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1481: RC;
1482: case '}':
1.1 paf 1483: if(--lexical_brackets_nestage==0) {
1.206 paf 1484: pop_LS(pc);
1.48 paf 1485: RC;
1.1 paf 1486: }
1.48 paf 1487: break;
1488: case '{':
1.1 paf 1489: lexical_brackets_nestage++;
1.48 paf 1490: break;
1491: }
1.1 paf 1492: break;
1493:
1.10 paf 1494: // METHOD CALL
1.1 paf 1495: case LS_METHOD_NAME:
1.48 paf 1496: switch(c) {
1497: case '[':
1.301 moko 1498: // ^name.<[>code]
1499: if( // end[-1]=='^' /* never, ^[ is literal */ ||
1500: end[-1]==':' /* was class name delim */ ||
1501: end[-1]=='.' /* was name delim */
1502: ) {
1.206 paf 1503: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1504: lexical_brackets_nestage=1;
1505: RC;
1506: }
1.206 paf 1507: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1508: lexical_brackets_nestage=1;
1.48 paf 1509: RC;
1510: case '{':
1.206 paf 1511: pc.ls=LS_METHOD_CURLY;
1.1 paf 1512: lexical_brackets_nestage=1;
1.48 paf 1513: RC;
1.69 paf 1514: case '(':
1.301 moko 1515: // ^name.<(>expr)
1516: if( // end[-1]=='^' /* never, ^( is literal */ ||
1517: end[-1]==':' /* was class name delim */ ||
1518: end[-1]=='.' /* was name delim */
1519: ) {
1520: push_LS(pc, LS_VAR_ROUND);
1521: lexical_brackets_nestage=1;
1522: RC;
1523: }
1.206 paf 1524: pc.ls=LS_METHOD_ROUND;
1.69 paf 1525: lexical_brackets_nestage=1;
1526: RC;
1.48 paf 1527: case '.': // name part delim
1528: case '$': // name part subvar
1529: case ':': // ':name' or 'class:name'
1.170 parser 1530: case '^': // ^abc^xxx wrong. bailing out
1531: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1532: case ' ': // ^if ( wrong. bailing out
1.48 paf 1533: RC;
1.1 paf 1534: }
1535: break;
1.48 paf 1536:
1537: case LS_METHOD_SQUARE:
1538: switch(c) {
1539: case '$':
1.206 paf 1540: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1541: RC;
1542: case '^':
1.206 paf 1543: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1544: RC;
1545: case ';': // param delim
1546: RC;
1547: case ']':
1.1 paf 1548: if(--lexical_brackets_nestage==0) {
1.206 paf 1549: pc.ls=LS_METHOD_AFTER;
1.48 paf 1550: RC;
1.1 paf 1551: }
1.48 paf 1552: break;
1553: case '[':
1.1 paf 1554: lexical_brackets_nestage++;
1.48 paf 1555: break;
1556: }
1.1 paf 1557: break;
1.48 paf 1558:
1.1 paf 1559: case LS_METHOD_CURLY:
1.48 paf 1560: switch(c) {
1561: case '$':
1.206 paf 1562: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1563: RC;
1564: case '^':
1.206 paf 1565: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1566: RC;
1567: case ';': // param delim
1.48 paf 1568: RC;
1569: case '}':
1.1 paf 1570: if(--lexical_brackets_nestage==0) {
1.206 paf 1571: pc.ls=LS_METHOD_AFTER;
1.48 paf 1572: RC;
1.1 paf 1573: }
1.48 paf 1574: break;
1575: case '{':
1.1 paf 1576: lexical_brackets_nestage++;
1.48 paf 1577: break;
1578: }
1.209 paf 1579: if(pc.explicit_result && c)
1580: switch(c) {
1.276 moko 1581: default:
1582: pc.string.append(c);
1.209 paf 1583: case '\n': case ' ': case '\t':
1584: begin=pc.source;
1585: begin_pos=pc.pos;
1.276 moko 1586: continue;
1.209 paf 1587: }
1.1 paf 1588: break;
1.48 paf 1589:
1.1 paf 1590: case LS_METHOD_AFTER:
1.69 paf 1591: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1592: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1593: lexical_brackets_nestage=1;
1.48 paf 1594: RC;
1.281 moko 1595: }
1.69 paf 1596: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1597: pc.ls=LS_METHOD_CURLY;
1.69 paf 1598: lexical_brackets_nestage=1;
1599: RC;
1.281 moko 1600: }
1.69 paf 1601: if(c=='(') {/* ]( }( )( */
1.206 paf 1602: pc.ls=LS_METHOD_ROUND;
1.1 paf 1603: lexical_brackets_nestage=1;
1.48 paf 1604: RC;
1.281 moko 1605: }
1.206 paf 1606: pop_LS(pc);
1607: pc.ungetc();
1.13 paf 1608: result=EON;
1.1 paf 1609: goto break2;
1610: }
1.9 paf 1611: if(c==0) {
1.1 paf 1612: result=-1;
1613: break;
1614: }
1615: }
1616:
1617: break2:
1.59 paf 1618: if(end!=begin) { // there is last piece?
1.258 misha 1619: if(c=='@' || c==0) // we are before LS_DEF_NAME or EOF?
1620: while(end!=begin && end[-1]=='\n') // trim all empty lines before LS_DEF_NAME and EOF
1.137 parser 1621: end--;
1.206 paf 1622: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1623: if(!pc.string_start)
1624: pc.string_start=begin_pos;
1.59 paf 1625: // append it
1.206 paf 1626: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1627: }
1.59 paf 1628: }
1.206 paf 1629: if(!pc.string.is_empty()) { // something accumulated?
1630: // create STRING value: array of OP_VALUE+origin+vstring
1.278 moko 1631: #ifdef SYMBOLS_CACHING
1632: Value *lookup=symbols->get(pc.string);
1633: #else
1634: Value *lookup=0;
1635: #endif
1.281 moko 1636: *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 1637: // new pieces storage
1.206 paf 1638: pc.string.clear();
1639: pc.string_start.clear();
1.58 paf 1640: // make current result be pending for next call, return STRING for now
1.206 paf 1641: pc.pending_state=result; result=STRING;
1.58 paf 1642: }
1.67 paf 1643: if(skip_analized) {
1.206 paf 1644: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1645: }
1.58 paf 1646: return result;
1.1 paf 1647: }
1648:
1.264 moko 1649: static int real_yyerror(Parse_control *pc, const char *s) { // Called by yyparse on error
1.293 moko 1650: PC.error=pa_strdup(s);
1.281 moko 1651: return 1;
1.110 paf 1652: }
1.1 paf 1653:
1.110 paf 1654: static void yyprint(FILE *file, int type, YYSTYPE value) {
1655: if(type==STRING)
1.206 paf 1656: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1657: }
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