Annotation of parser3/src/main/compile.y, revision 1.268
1.168 parser 1: %{
1.105 paf 2: /** @file
1.106 paf 3: Parser: compiler(lexical parser and grammar).
4:
1.262 moko 5: Copyright (c) 2001-2012 Art. Lebedev Studio (http://www.artlebedev.com)
1.168 parser 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.217 paf 7:
1.262 moko 8:
1.88 paf 9: */
10:
1.268 ! moko 11: volatile const char * IDENT_COMPILE_Y = "$Id: compile.y,v 1.267 2015/03/16 09:47:34 misha 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 YYPARSE_PARAM pc
26: #define YYLEX_PARAM pc
27: #define YYDEBUG 1
1.106 paf 28: #define YYERROR_VERBOSE 1
1.206 paf 29: #define yyerror(msg) real_yyerror((Parse_control *)pc, msg)
1.9 paf 30: #define YYPRINT(file, type, value) yyprint(file, type, value)
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:
1.97 paf 44: #define USE_CONTROL_METHOD_NAME "USE"
1.226 misha 45: #define OPTIONS_CONTROL_METHOD_NAME "OPTIONS"
46: #define OPTION_ALL_VARS_LOCAL_NAME "locals"
1.230 misha 47: #define OPTION_PARTIAL_CLASS "partial"
1.238 misha 48: #define REM_OPERATOR_NAME "rem"
1.1 paf 49:
1.206 paf 50: // forwards
51:
1.264 moko 52: static int real_yyerror(Parse_control* pc, const char* s);
1.206 paf 53: static void yyprint(FILE* file, int type, YYSTYPE value);
54: static int yylex(YYSTYPE* lvalp, void* pc);
1.1 paf 55:
1.216 paf 56: static const VBool vfalse(false);
57: static const VBool vtrue(true);
1.261 moko 58: static const VString vempty;
1.216 paf 59:
1.8 paf 60: // local convinient inplace typecast & var
1.205 paf 61: #undef PC
1.206 paf 62: #define PC (*(Parse_control *)pc)
63: #undef POOL
1.114 paf 64: #define POOL (*PC.pool)
1.107 paf 65: #ifndef DOXYGEN
1.265 moko 66:
67: #define CLASS_ADD if(PC.class_add()){ \
68: strncpy(PC.error, PC.cclass->name().cstr(), MAX_STRING/2); \
69: strcat(PC.error, " - class is already defined"); \
70: YYERROR; \
71: }
72:
1.1 paf 73: %}
74:
75: %pure_parser
76:
1.13 paf 77: %token EON
1.4 paf 78: %token STRING
1.1 paf 79: %token BOGUS
1.55 paf 80:
1.58 paf 81: %token BAD_STRING_COMPARISON_OPERATOR
1.114 paf 82: %token BAD_HEX_LITERAL
1.171 parser 83: %token BAD_METHOD_DECL_START
1.193 paf 84: %token BAD_METHOD_PARAMETER_NAME_CHARACTER
1.209 paf 85: %token BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE
1.58 paf 86:
1.59 paf 87: %token LAND "&&"
1.58 paf 88: %token LOR "||"
1.193 paf 89: %token LXOR "!||"
90: %token NXOR "!|"
1.58 paf 91:
92: %token NLE "<="
93: %token NGE ">="
94: %token NEQ "=="
95: %token NNE "!="
1.195 paf 96: %token NSL "<<"
97: %token NSR ">>"
1.58 paf 98:
99: %token SLT "lt"
100: %token SGT "gt"
101: %token SLE "le"
102: %token SGE "ge"
103: %token SEQ "eq"
104: %token SNE "ne"
105:
1.67 paf 106: %token DEF "def"
107: %token IN "in"
108: %token FEXISTS "-f"
1.127 paf 109: %token DEXISTS "-d"
1.95 paf 110: %token IS "is"
1.67 paf 111:
1.216 paf 112: %token LITERAL_TRUE "true"
113: %token LITERAL_FALSE "false"
114:
1.57 paf 115: /* logical */
1.193 paf 116: %left "!||"
1.57 paf 117: %left "||"
118: %left "&&"
1.131 paf 119: %left '<' '>' "<=" ">=" "lt" "gt" "le" "ge"
120: %left "==" "!=" "eq" "ne"
121: %left "is" "def" "in" "-f" "-d"
1.57 paf 122:
123: /* bitwise */
1.193 paf 124: %left "!|"
1.131 paf 125: %left '|'
126: %left '&'
1.202 paf 127: %left "<<" ">>"
1.57 paf 128:
1.56 paf 129: /* numerical */
1.202 paf 130: %left '+' '-'
131: %left '*' '/' '\\' '%'
132: %left NUNARY /* unary - + */
133:
134: /* out-of-group */
135: %left '~' /* bitwise */
136: %left '!' /* logical */
1.1 paf 137:
138: %%
1.195 paf 139: all:
1.10 paf 140: one_big_piece {
1.251 misha 141: Method* method=new Method(Method::CT_ANY,
1.81 paf 142: 0, 0, /*min, max numbered_params_count*/
1.75 paf 143: 0/*param_names*/, 0/*local_names*/,
144: $1/*parser_code*/, 0/*native_code*/);
1.251 misha 145: PC.cclass->set_method(PC.alias_method(main_method_name), method);
1.10 paf 146: }
147: | methods;
148:
149: methods: method | methods method;
150: one_big_piece: maybe_codes;
151:
1.34 paf 152: method: control_method | code_method;
153:
154: control_method: '@' STRING '\n'
1.132 paf 155: maybe_control_strings {
1.260 misha 156: const String& command=LA2S(*$2)->trim(String::TRIM_END);
1.34 paf 157: YYSTYPE strings_code=$4;
1.206 paf 158: if(strings_code->count()<1*OPERATIONS_PER_OPVALUE) {
1.114 paf 159: strcpy(PC.error, "@");
160: strcat(PC.error, command.cstr());
161: strcat(PC.error, " is empty");
1.37 paf 162: YYERROR;
163: }
1.74 paf 164: if(command==CLASS_NAME) {
1.206 paf 165: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.265 moko 166: CLASS_ADD;
1.73 paf 167: // new class' name
1.260 misha 168: const String& name=LA2S(*strings_code)->trim(String::TRIM_END);
1.73 paf 169: // creating the class
1.206 paf 170: VStateless_class* cclass=new VClass;
1.226 misha 171: PC.cclass_new=cclass;
172: PC.cclass_new->set_name(name);
1.266 misha 173: PC.append=false;
1.73 paf 174: } else {
1.268 ! moko 175: strcpy(PC.error, "@" CLASS_NAME " must contain only one line with class name (contains more then one)");
1.34 paf 176: YYERROR;
177: }
1.130 paf 178: } else if(command==USE_CONTROL_METHOD_NAME) {
1.265 moko 179: CLASS_ADD;
1.206 paf 180: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE)
1.260 misha 181: PC.request.use_file(PC.request.main_class, LA2S(*strings_code, i)->trim(String::TRIM_END), PC.request.get_used_filename(PC.file_no));
1.130 paf 182: } else if(command==BASE_NAME) {
1.226 misha 183: if(PC.append){
184: strcpy(PC.error, "can't set base while appending methods to class '");
185: strncat(PC.error, PC.cclass->name().cstr(), MAX_STRING/2);
186: strcat(PC.error, "'");
187: YYERROR;
188: }
1.265 moko 189: CLASS_ADD;
1.188 paf 190: if(PC.cclass->base_class()) { // already changed from default?
1.130 paf 191: strcpy(PC.error, "class already have a base '");
1.226 misha 192: strncat(PC.error, PC.cclass->base_class()->name().cstr(), MAX_STRING/2);
1.130 paf 193: strcat(PC.error, "'");
194: YYERROR;
195: }
1.206 paf 196: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.260 misha 197: const String& base_name=LA2S(*strings_code)->trim(String::TRIM_END);
1.252 misha 198: if(Value* base_class_value=PC.request.get_class(base_name)) {
1.206 paf 199: // @CLASS == @BASE sanity check
200: if(VStateless_class *base_class=base_class_value->get_class()) {
201: if(PC.cclass==base_class) {
1.268 ! moko 202: strcpy(PC.error, "@" CLASS_NAME " equals @" BASE_NAME);
1.206 paf 203: YYERROR;
204: }
205: PC.cclass->get_class()->set_base(base_class);
206: } else { // they asked to derive from a class without methods ['env' & co]
207: strcpy(PC.error, base_name.cstr());
1.268 ! moko 208: strcat(PC.error, ": you can not derive from this class in @" BASE_NAME);
1.206 paf 209: YYERROR;
210: }
211: } else {
1.130 paf 212: strcpy(PC.error, base_name.cstr());
1.268 ! moko 213: strcat(PC.error, ": undefined class in @" BASE_NAME);
1.73 paf 214: YYERROR;
215: }
1.34 paf 216: } else {
1.268 ! moko 217: strcpy(PC.error, "@" BASE_NAME " must contain sole name");
1.34 paf 218: YYERROR;
219: }
1.223 misha 220: } else if(command==OPTIONS_CONTROL_METHOD_NAME) {
221: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE) {
1.260 misha 222: const String& option=LA2S(*strings_code, i)->trim(String::TRIM_END);
1.226 misha 223: if(option==OPTION_ALL_VARS_LOCAL_NAME){
224: PC.set_all_vars_local();
1.230 misha 225: } else if(option==OPTION_PARTIAL_CLASS){
226: if(PC.cclass_new){
227: if(VStateless_class* existed=PC.get_existed_class(PC.cclass_new)){
228: if(!PC.reuse_existed_class(existed)){
229: strcpy(PC.error, "can't append methods to '");
230: strncat(PC.error, PC.cclass_new->name().cstr(), MAX_STRING/2);
231: strcat(PC.error, "' - the class wasn't marked as partial");
232: YYERROR;
233: }
1.226 misha 234: } else {
1.256 misha 235: // marks the new class as partial. we will be able to add methods here later.
1.230 misha 236: PC.cclass_new->set_partial();
1.226 misha 237: }
1.230 misha 238: } else {
1.268 ! moko 239: strcpy(PC.error, "'" OPTION_PARTIAL_CLASS "' option should be used straight after @" CLASS_NAME);
1.226 misha 240: YYERROR;
241: }
1.256 misha 242: } else if(option==method_call_type_static){
243: PC.set_methods_call_type(Method::CT_STATIC);
244: } else if(option==method_call_type_dynamic){
245: PC.set_methods_call_type(Method::CT_DYNAMIC);
1.223 misha 246: } else {
1.226 misha 247: strcpy(PC.error, "'");
248: strncat(PC.error, option.cstr(), MAX_STRING/2);
249: strcat(PC.error, "' invalid option. valid options are "
1.268 ! moko 250: "'" OPTION_PARTIAL_CLASS "', '" OPTION_ALL_VARS_LOCAL_NAME "'"
! 251: ", '" METHOD_CALL_TYPE_STATIC "' and '" METHOD_CALL_TYPE_DYNAMIC "'"
1.256 misha 252: );
1.223 misha 253: YYERROR;
254: }
255: }
1.130 paf 256: } else {
257: strcpy(PC.error, "'");
258: strncat(PC.error, command.cstr(), MAX_STRING/2);
259: strcat(PC.error, "' invalid special name. valid names are "
1.268 ! moko 260: "'" CLASS_NAME "', '" USE_CONTROL_METHOD_NAME "', '" BASE_NAME "' and '" OPTIONS_CONTROL_METHOD_NAME "'.");
1.130 paf 261: YYERROR;
1.34 paf 262: }
263: };
1.132 paf 264: maybe_control_strings: empty | control_strings;
1.259 misha 265: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2); };
1.37 paf 266: control_string: maybe_string '\n';
267: maybe_string: empty | STRING;
1.34 paf 268:
1.222 misha 269: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n' {
1.265 moko 270: CLASS_ADD;
1.208 paf 271: PC.explicit_result=false;
1.10 paf 272:
273: YYSTYPE params_names_code=$3;
1.206 paf 274: ArrayString* params_names=0;
275: if(int size=params_names_code->count()) {
276: params_names=new ArrayString;
277: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
278: *params_names+=LA2S(*params_names_code, i);
1.75 paf 279: }
1.10 paf 280:
281: YYSTYPE locals_names_code=$4;
1.206 paf 282: ArrayString* locals_names=0;
1.223 misha 283: bool all_vars_local=false;
1.206 paf 284: if(int size=locals_names_code->count()) {
285: locals_names=new ArrayString;
1.208 paf 286: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE) {
287: const String* local_name=LA2S(*locals_names_code, i);
288: if(*local_name==RESULT_VAR_NAME)
289: PC.explicit_result=true;
1.226 misha 290: else if(*local_name==OPTION_ALL_VARS_LOCAL_NAME)
1.223 misha 291: all_vars_local=true;
1.208 paf 292: else
293: *locals_names+=local_name;
294: }
1.75 paf 295: }
1.231 misha 296: if(!all_vars_local && PC.cclass && PC.cclass->is_vars_local())
1.223 misha 297: all_vars_local=true;
1.10 paf 298:
1.208 paf 299: Method* method=new Method(
1.206 paf 300: //name,
1.257 misha 301: GetMethodCallType(PC, *$2),
1.81 paf 302: 0, 0/*min,max numbered_params_count*/,
1.76 paf 303: params_names, locals_names,
1.223 misha 304: 0/*to be filled later in next {} */, 0, all_vars_local);
1.221 misha 305:
1.208 paf 306: *reinterpret_cast<Method**>(&$$)=method;
1.222 misha 307: } maybe_codes {
1.251 misha 308: Method* method=reinterpret_cast<Method*>($7);
1.231 misha 309: // fill in the code
1.251 misha 310: method->parser_code=$8;
1.231 misha 311:
312: // register in class
313: const String& name=*LA2S(*$2);
1.251 misha 314: PC.cclass->set_method(PC.alias_method(name), method);
1.8 paf 315: };
1.10 paf 316:
317: maybe_bracketed_strings: empty | bracketed_maybe_strings;
1.259 misha 318: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2;};
1.10 paf 319: maybe_strings: empty | strings;
1.259 misha 320: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3); };
1.10 paf 321:
322: maybe_comment: empty | STRING;
1.1 paf 323:
324: /* codes */
325:
1.10 paf 326: maybe_codes: empty | codes;
327:
1.259 misha 328: codes: code | codes code { $$=$1; P(*$$, *$2); };
1.81 paf 329: code: write_string | action;
1.209 paf 330: action: get | put | call;
1.1 paf 331:
332: /* get */
333:
1.64 paf 334: get: get_value {
1.238 misha 335: $$=N();
336: YYSTYPE code=$1;
1.247 misha 337: size_t count=code->count();
1.245 misha 338:
1.235 misha 339: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.247 misha 340: if(
341: count!=3
1.267 misha 342: || !change_first(*code, OP::OP_VALUE__GET_ELEMENT, /*=>*/OP::OP_VALUE__GET_ELEMENT__WRITE)
1.247 misha 343: )
1.238 misha 344: #endif
1.247 misha 345:
1.245 misha 346: #ifdef OPTIMIZE_BYTECODE_GET_SELF_ELEMENT
1.247 misha 347: if(
348: count!=3
1.267 misha 349: || !change_first(*code, OP::OP_WITH_SELF__VALUE__GET_ELEMENT, /*=>*/OP::OP_WITH_SELF__VALUE__GET_ELEMENT__WRITE)
1.247 misha 350: )
1.245 misha 351: #endif
352:
1.239 misha 353: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
1.247 misha 354: if(
355: count!=5
1.267 misha 356: || !change_first(*code, OP::OP_GET_OBJECT_ELEMENT, /*=>*/OP::OP_GET_OBJECT_ELEMENT__WRITE)
1.247 misha 357: )
1.239 misha 358: #endif
359:
360: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
1.247 misha 361: if(
362: count!=5
1.267 misha 363: || !change_first(*code, OP::OP_GET_OBJECT_VAR_ELEMENT, /*=>*/OP::OP_GET_OBJECT_VAR_ELEMENT__WRITE)
1.247 misha 364: )
1.238 misha 365: #endif
1.267 misha 366:
367: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT__SPECIAL
368: if(
369: !change(*code, count-1/* last */, OP::OP_GET_ELEMENT__SPECIAL, /*=>*/OP::OP_GET_ELEMENT__SPECIAL__WRITE)
370: )
371: #endif
372:
1.247 misha 373: {
1.267 misha 374: change_or_append(*code, count-1 /* last */,
375: OP::OP_GET_ELEMENT, /*=>*/OP::OP_GET_ELEMENT__WRITE,
1.247 misha 376: /*or */OP::OP_WRITE_VALUE
377: ); /* value=pop; wcontext.write(value) */
1.246 misha 378: }
1.247 misha 379:
1.238 misha 380: P(*$$, *code);
1.1 paf 381: };
1.259 misha 382: get_value: '$' get_name_value { $$=$2; };
1.64 paf 383: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.259 misha 384: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2; };
1.44 paf 385: name_without_curly_rdive:
386: name_without_curly_rdive_read
387: | name_without_curly_rdive_class;
1.19 paf 388: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 389: $$=N();
1.238 misha 390: YYSTYPE diving_code=$1;
1.239 misha 391: size_t count=diving_code->count();
1.247 misha 392:
393: if(maybe_make_self(*$$, *diving_code, count)) {
394: // $self.
395: } else
1.239 misha 396:
397: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
1.247 misha 398: if(maybe_make_get_object_element(*$$, *diving_code, count)){
1.245 misha 399: // optimization for $object.field + ^object.method[
1.247 misha 400: } else
1.238 misha 401: #endif
1.239 misha 402:
403: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
1.247 misha 404: if(maybe_make_get_object_var_element(*$$, *diving_code, count)){
1.245 misha 405: // optimization for $object.$var
1.247 misha 406: } else
1.238 misha 407: #endif
1.239 misha 408:
409: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.248 misha 410: if(
411: count>=4
412: && (*diving_code)[0].code==OP::OP_VALUE
413: && (*diving_code)[3].code==OP::OP_GET_ELEMENT
414: ){
415: // optimization
1.239 misha 416: O(*$$,
1.247 misha 417: (PC.in_call_value && count==4)
1.239 misha 418: ? OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR // ^object[ : OP_VALUE+origin+string+OP_GET_ELEMENT => OP_VALUE__GET_ELEMENT_OR_OPERATOR+origin+string
419: : OP::OP_VALUE__GET_ELEMENT // $object : OP_VALUE+origin+string+OP_GET_ELEMENT => OP_VALUE__GET_ELEMENT+origin+string
420: );
421: P(*$$, *diving_code, 1/*offset*/, 2/*limit*/); // copy origin+value
1.247 misha 422: if(count>4)
423: P(*$$, *diving_code, 4); // copy tail
1.239 misha 424: } else {
425: O(*$$, OP::OP_WITH_READ); /* stack: starting context */
426: P(*$$, *diving_code);
427: }
1.233 misha 428: #else
1.247 misha 429: {
1.238 misha 430: O(*$$, OP::OP_WITH_READ); /* stack: starting context */
1.179 paf 431:
1.238 misha 432: // ^if OP_ELEMENT => ^if OP_ELEMENT_OR_OPERATOR
433: // optimized OP_VALUE+origin+string+OP_GET_ELEMENT. => OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
1.239 misha 434: if(PC.in_call_value && count==4)
435: diving_code->put(count-1, OP::OP_GET_ELEMENT_OR_OPERATOR);
1.206 paf 436: P(*$$, *diving_code);
1.239 misha 437: }
1.233 misha 438: #endif
1.22 paf 439: /* diving code; stack: current context */
1.1 paf 440: };
1.259 misha 441: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2); };
442: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2); };
1.1 paf 443:
444: /* put */
445:
1.81 paf 446: put: '$' name_expr_wdive construct {
1.241 misha 447: $$=N();
1.244 misha 448: #ifdef OPTIMIZE_BYTECODE_CONSTRUCT
449: if(maybe_optimize_construct(*$$, *$2, *$3)){
1.246 misha 450: // $a(expr), $.a(expr), $a[value], $.a[value], $self.a[value], $self.a(expr)
1.241 misha 451: } else
452: #endif
453: {
454: P(*$$, *$2); /* stack: context,name */
455: P(*$$, *$3); /* stack: context,name,constructor_value */
456: }
1.20 paf 457: };
1.44 paf 458: name_expr_wdive:
1.157 parser 459: name_expr_wdive_root
460: | name_expr_wdive_write
1.44 paf 461: | name_expr_wdive_class;
1.157 parser 462: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 463: $$=N();
1.238 misha 464: YYSTYPE diving_code=$1;
1.247 misha 465: size_t count=diving_code->count();
466:
467: if(maybe_make_self(*$$, *diving_code, count)) {
468: // $self.
469: } else
470: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
471: if(
472: count>=4
473: && (*diving_code)[0].code==OP::OP_VALUE
474: && (*diving_code)[3].code==OP::OP_GET_ELEMENT
475: ){
476: O(*$$, OP::OP_WITH_ROOT__VALUE__GET_ELEMENT);
477: P(*$$, *diving_code, 1/*offset*/, 2/*limit*/); // copy origin+value
478: if(count>4)
479: P(*$$, *diving_code, 4); // tail
480: } else
481: #endif
482: {
1.229 misha 483: O(*$$, OP::OP_WITH_ROOT); /* stack: starting context */
1.206 paf 484: P(*$$, *diving_code);
1.23 paf 485: }
486: /* diving code; stack: current context */
1.156 parser 487: };
1.157 parser 488: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 489: $$=N();
1.229 misha 490: O(*$$, OP::OP_WITH_WRITE); /* stack: starting context */
1.206 paf 491: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 492: };
1.259 misha 493: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2); };
1.20 paf 494:
1.244 misha 495: construct:
1.163 parser 496: construct_square
497: | construct_round
498: | construct_curly
1.149 parser 499: ;
1.211 paf 500: construct_square: '[' {
501: // allow $result_or_other_variable[ letters here any time ]
502: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
503: } any_constructor_code_value {
1.213 paf 504: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.211 paf 505: } ']' {
1.149 parser 506: // stack: context, name
1.211 paf 507: $$=$3; // stack: context, name, value
1.229 misha 508: O(*$$, OP::OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 509: }
510: ;
1.149 parser 511: construct_round: '(' expr_value ')' {
1.206 paf 512: $$=N();
1.229 misha 513: O(*$$, OP::OP_PREPARE_TO_EXPRESSION);
1.149 parser 514: // stack: context, name
1.206 paf 515: P(*$$, *$2); // stack: context, name, value
1.229 misha 516: O(*$$, OP::OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 517: }
1.52 paf 518: ;
1.149 parser 519: construct_curly: '{' maybe_codes '}' {
520: // stack: context, name
1.206 paf 521: $$=N();
1.229 misha 522: OA(*$$, OP::OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 523: };
524:
1.55 paf 525: any_constructor_code_value:
1.261 moko 526: empty_value /* optimized $var[] case */
1.52 paf 527: | STRING /* optimized $var[STRING] case */
1.55 paf 528: | constructor_code_value /* $var[something complex] */
1.1 paf 529: ;
1.55 paf 530: constructor_code_value: constructor_code {
1.206 paf 531: $$=N();
1.229 misha 532: OA(*$$, OP::OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 533: /* some code that writes to that context */
534: /* context=pop; stack: context.value() */
1.1 paf 535: };
1.55 paf 536: constructor_code: codes__excluding_sole_str_literal;
1.259 misha 537: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2); };
1.27 paf 538:
1.1 paf 539: /* call */
540:
1.66 paf 541: call: call_value {
1.267 misha 542: size_t count=$1->count();
1.238 misha 543: #ifdef OPTIMIZE_BYTECODE_CUT_REM_OPERATOR
1.267 misha 544: if(count)
1.238 misha 545: #endif
546: {
547: $$=$1; /* stack: value */
1.267 misha 548: if(!change_first(*$$, OP::OP_CONSTRUCT_OBJECT, /*=>*/OP::OP_CONSTRUCT_OBJECT__WRITE))
549: change_or_append(*$$, count-2 /* second last */,
550: OP::OP_CALL, /*=>*/ OP::OP_CALL__WRITE,
1.249 misha 551: /*or */OP::OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.238 misha 552: }
1.66 paf 553: };
1.177 paf 554: call_value: '^' {
1.180 paf 555: PC.in_call_value=true;
1.177 paf 556: }
557: call_name {
1.180 paf 558: PC.in_call_value=false;
1.177 paf 559: }
1.154 parser 560: store_params EON { /* ^field.$method{vasya} */
1.238 misha 561: #ifdef OPTIMIZE_BYTECODE_CUT_REM_OPERATOR
1.242 misha 562: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.238 misha 563: const String* operator_name=LA2S(*$3, 0, OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR);
1.242 misha 564: #else
565: const String* operator_name=LA2S(*$3, 1);
566: #endif
1.249 misha 567: if(operator_name && *operator_name==REM_OPERATOR_NAME){
1.238 misha 568: $$=N();
569: } else
570: #endif
571: {
572: YYSTYPE params_code=$5;
573: if(params_code->count()==3) { // probably [] case. [OP::OP_VALUE+origin+Void]
574: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.261 moko 575: if(const String * string=value->get_string())
576: if(string->is_empty()) // value is empty string?
577: params_code=0; // ^zzz[] case. don't append lone empty param.
1.238 misha 578: }
579: /* stack: context, method_junction */
1.249 misha 580:
581: YYSTYPE var_code=$3;
582: if(
583: var_code->count()==8
584: && (*var_code)[0].code==OP::OP_VALUE__GET_CLASS
585: && (*var_code)[3].code==OP::OP_PREPARE_TO_CONSTRUCT_OBJECT
586: && (*var_code)[4].code==OP::OP_VALUE
587: && (*var_code)[7].code==OP::OP_GET_ELEMENT
588: ){
1.267 misha 589: $$=N();
1.249 misha 590: O(*$$, OP::OP_CONSTRUCT_OBJECT);
591: P(*$$, *var_code, 1/*offset*/, 2/*limit*/); // class name
592: P(*$$, *var_code, 5/*offset*/, 2/*limit*/); // constructor name
593: OA(*$$, params_code);
594: } else
595: {
596: $$=var_code; /* with_xxx,diving code; stack: context,method_junction */
597: OA(*$$, OP::OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
598: }
1.238 misha 599: }
1.1 paf 600: };
601:
1.43 paf 602: call_name: name_without_curly_rdive;
1.38 paf 603:
1.259 misha 604: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2); };
1.69 paf 605: store_param:
606: store_square_param
607: | store_round_param
608: | store_curly_param
1.31 paf 609: ;
1.210 paf 610: store_square_param: '[' {
1.211 paf 611: // allow ^call[ letters here any time ]
1.210 paf 612: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
613: } store_code_param_parts {
1.213 paf 614: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.259 misha 615: } ']' {$$=$3;};
616: store_round_param: '(' store_expr_param_parts ')' {$$=$2;};
617: store_curly_param: '{' store_curly_param_parts '}' {$$=$2;};
1.69 paf 618: store_code_param_parts:
619: store_code_param_part
1.259 misha 620: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3); }
1.69 paf 621: ;
622: store_expr_param_parts:
623: store_expr_param_part
1.259 misha 624: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3); }
1.69 paf 625: ;
1.94 paf 626: store_curly_param_parts:
627: store_curly_param_part
1.259 misha 628: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3); }
1.94 paf 629: ;
1.120 paf 630: store_code_param_part: code_param_value {
1.32 paf 631: $$=$1;
1.120 paf 632: };
1.214 paf 633: store_expr_param_part: expr_value {
634: YYSTYPE expr_code=$1;
1.215 paf 635: if(expr_code->count()==3
1.234 misha 636: && (*expr_code)[0].code==OP::OP_VALUE) { // optimizing (double/bool/incidently 'string' too) case. [OP::OP_VALUE+origin+Double]. no evaluating
1.214 paf 637: $$=expr_code;
638: } else {
1.238 misha 639: YYSTYPE code=N();
1.229 misha 640: O(*code, OP::OP_PREPARE_TO_EXPRESSION);
1.214 paf 641: P(*code, *expr_code);
1.229 misha 642: O(*code, OP::OP_WRITE_EXPR_RESULT);
1.214 paf 643: $$=N();
1.229 misha 644: OA(*$$, OP::OP_EXPR_CODE__STORE_PARAM, code);
1.214 paf 645: }
1.69 paf 646: };
1.94 paf 647: store_curly_param_part: maybe_codes {
1.206 paf 648: $$=N();
1.229 misha 649: OA(*$$, OP::OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 650: };
1.120 paf 651: code_param_value:
1.261 moko 652: empty_value /* optimized [;...] case */
1.120 paf 653: | STRING /* optimized [STRING] case */
654: | constructor_code_value /* [something complex] */
655: ;
1.1 paf 656:
657: /* name */
658:
1.259 misha 659: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2); };
1.1 paf 660:
1.259 misha 661: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2); };
1.1 paf 662: name_step: name_advance1 '.';
663: name_advance1: name_expr_value {
1.177 paf 664: // we know that name_advance1 not called from ^xxx context
665: // so we'll not check for operator call possibility as we do in name_advance2
666:
1.1 paf 667: /* stack: context */
668: $$=$1; /* stack: context,name */
1.267 misha 669: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT__SPECIAL
670: O(*$$, is_special_element(*$$) ? OP::OP_GET_ELEMENT__SPECIAL : OP::OP_GET_ELEMENT);
671: #else
1.229 misha 672: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.267 misha 673: #endif
1.1 paf 674: };
675: name_advance2: name_expr_value {
676: /* stack: context */
677: $$=$1; /* stack: context,name */
1.267 misha 678: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT__SPECIAL
679: O(*$$, is_special_element(*$$) ? OP::OP_GET_ELEMENT__SPECIAL : OP::OP_GET_ELEMENT);
680: #else
1.229 misha 681: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.267 misha 682: #endif
1.1 paf 683: }
1.4 paf 684: | STRING BOGUS
1.1 paf 685: ;
686: name_expr_value:
1.4 paf 687: STRING /* subname_is_const */
1.1 paf 688: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 689: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 690: | name_square_code_value /* [codes] */
1.1 paf 691: ;
692: name_expr_subvar_value: '$' subvar_ref_name_rdive {
693: $$=$2;
1.229 misha 694: O(*$$, OP::OP_GET_ELEMENT);
1.1 paf 695: };
1.4 paf 696: name_expr_with_subvar_value: STRING subvar_get_writes {
1.238 misha 697: YYSTYPE code;
1.183 paf 698: {
1.206 paf 699: change_string_literal_to_write_string_literal(*(code=$1));
700: P(*code, *$2);
1.183 paf 701: }
1.206 paf 702: $$=N();
1.229 misha 703: OA(*$$, OP::OP_STRING_POOL, code);
1.1 paf 704: };
1.212 paf 705: name_square_code_value: '[' {
706: // allow $result_or_other_variable[ letters here any time ]
707: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
708: } codes {
1.213 paf 709: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.212 paf 710: } ']' {
1.206 paf 711: $$=N();
1.267 misha 712: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT__SPECIAL
713: if(!maybe_append_simple_diving_code(*$$, *$3))
714: #endif
715: {
1.229 misha 716: OA(*$$, OP::OP_OBJECT_POOL, $3); /* stack: empty write context */
1.183 paf 717: /* some code that writes to that context */
718: /* context=pop; stack: context.value() */
1.267 misha 719: }
1.160 parser 720: };
1.154 parser 721: subvar_ref_name_rdive: STRING {
1.206 paf 722: $$=N();
1.229 misha 723: O(*$$, OP::OP_WITH_READ);
1.206 paf 724: P(*$$, *$1);
1.1 paf 725: };
1.259 misha 726: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2); };
1.1 paf 727: subvar__get_write: '$' subvar_ref_name_rdive {
728: $$=$2;
1.229 misha 729: O(*$$, OP::OP_GET_ELEMENT__WRITE);
1.42 paf 730: };
731:
1.154 parser 732: class_prefix:
733: class_static_prefix
734: | class_constructor_prefix
735: ;
1.155 parser 736: class_static_prefix: STRING ':' {
737: $$=$1; // stack: class name string
1.206 paf 738: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
739: if(VStateless_class* base=PC.cclass->base_class()) {
740: change_string_literal_value(*$$, base->name());
1.189 paf 741: } else {
742: strcpy(PC.error, "no base class declared");
743: YYERROR;
744: }
745: }
1.238 misha 746: // optimized OP_VALUE+origin+string+OP_GET_CLASS => OP_VALUE__GET_CLASS+origin+string
1.267 misha 747: change_first(*$$, OP::OP_VALUE, OP::OP_VALUE__GET_CLASS);
1.155 parser 748: };
749: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 750: $$=$1;
1.180 paf 751: if(!PC.in_call_value) {
1.154 parser 752: strcpy(PC.error, ":: not allowed here");
753: YYERROR;
754: }
1.229 misha 755: O(*$$, OP::OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 756: };
757:
1.53 paf 758:
1.56 paf 759: /* expr */
1.53 paf 760:
1.214 paf 761: expr_value: expr;
1.56 paf 762: expr:
1.214 paf 763: double_or_STRING
1.216 paf 764: | true_value
765: | false_value
1.64 paf 766: | get_value
1.66 paf 767: | call_value
1.259 misha 768: | '"' string_inside_quotes_value '"' { $$ = $2; }
769: | '\'' string_inside_quotes_value '\'' { $$ = $2; }
1.60 paf 770: | '(' expr ')' { $$ = $2; }
771: /* stack: operand // stack: @operand */
1.259 misha 772: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP::OP_NEG); }
773: | '+' expr %prec NUNARY { $$=$2; }
774: | '~' expr { $$=$2; O(*$$, OP::OP_INV); }
775: | '!' expr { $$=$2; O(*$$, OP::OP_NOT); }
776: | "def" expr { $$=$2; O(*$$, OP::OP_DEF); }
777: | "in" expr { $$=$2; O(*$$, OP::OP_IN); }
778: | "-f" expr { $$=$2; O(*$$, OP::OP_FEXISTS); }
779: | "-d" expr { $$=$2; O(*$$, OP::OP_DEXISTS); }
1.60 paf 780: /* stack: a,b // stack: a@b */
1.259 misha 781: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_SUB); }
782: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_ADD); }
783: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MUL); }
784: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_DIV); }
785: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MOD); }
786: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_INTDIV); }
787: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SL); }
788: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SR); }
789: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_AND); }
790: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_OR); }
791: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_XOR); }
792: | expr "&&" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_AND); }
793: | expr "||" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_OR); }
794: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_LOG_XOR); }
795: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LT); }
796: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GT); }
797: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LE); }
798: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GE); }
799: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_EQ); }
800: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_NE); }
801: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LT); }
802: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GT); }
803: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LE); }
804: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GE); }
805: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_EQ); }
806: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_NE); }
807: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_IS); }
1.56 paf 808: ;
1.214 paf 809:
810: double_or_STRING: STRING {
1.238 misha 811: // optimized OP_STRING => OP_VALUE for doubles
1.214 paf 812: maybe_change_string_literal_to_double_literal(*($$=$1));
813: };
1.55 paf 814:
1.65 paf 815: string_inside_quotes_value: maybe_codes {
1.238 misha 816: #ifdef OPTIMIZE_BYTECODE_STRING_POOL
817: // it brakes ^if(" 09 "){...}
818: YYSTYPE code=$1;
819: $$=N();
1.267 misha 820: if(code->count()==3 && change_first(*code, OP::OP_STRING__WRITE, OP::OP_VALUE)){
1.238 misha 821: // optimized OP_STRING__WRITE+origin+value => OP_VALUE+origin+value without starting OP_STRING_POOL
822: P(*$$, *code);
823: } else {
824: OA(*$$, OP::OP_STRING_POOL, code); /* stack: empty write context */
825: }
826: #else
1.206 paf 827: $$=N();
1.229 misha 828: OA(*$$, OP::OP_STRING_POOL, $1); /* stack: empty write context */
1.238 misha 829: #endif
1.183 paf 830: /* some code that writes to that context */
831: /* context=pop; stack: context.get_string() */
1.53 paf 832: };
1.1 paf 833:
1.27 paf 834: /* basics */
1.1 paf 835:
1.81 paf 836: write_string: STRING {
1.238 misha 837: // optimized OP_STRING+OP_WRITE_VALUE => OP_STRING__WRITE
1.259 misha 838: change_string_literal_to_write_string_literal(*($$=$1));
1.54 paf 839: };
840:
1.261 moko 841: empty_value: /* empty */ { $$=VL(/*we know that we will not change it*/const_cast<VString*>(&vempty), 0, 0, 0); }
1.259 misha 842: true_value: "true" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vtrue), 0, 0, 0); }
843: false_value: "false" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vfalse), 0, 0, 0); }
1.216 paf 844:
1.259 misha 845: empty: /* empty */ { $$=N(); };
1.1 paf 846:
847: %%
1.105 paf 848: #endif
1.1 paf 849:
850: /*
851: 000$111(2222)00
852: 000$111{3333}00
1.9 paf 853: $,^: push,=0
1.1 paf 854: 1:( { break=pop
855: 2:( ) pop
856: 3:{ } pop
857:
858: 000^111(2222)4444{33333}4000
1.9 paf 859: $,^: push,=0
1.1 paf 860: 1:( { break=pop
861: 2:( )=4
862: 3:{ }=4
863: 4:[^({]=pop
864: */
865:
1.206 paf 866: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
867: pc.source--;
868: if(pc.pos.col==0) {
869: --pc.pos.line; pc.pos.col=last_line_end_col;
870: } else
871: --pc.pos.col;
872:
873: }
874: static int yylex(YYSTYPE *lvalp, void *apc) {
875: register Parse_control& pc=*static_cast<Parse_control*>(apc);
876:
877: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 878: #define RC {result=c; goto break2; }
1.1 paf 879:
1.206 paf 880: register int c;
881: int result;
1.1 paf 882:
1.206 paf 883: if(pc.pending_state) {
884: result=pc.pending_state;
885: pc.pending_state=0;
1.1 paf 886: return result;
887: }
888:
1.206 paf 889: const char *begin=pc.source;
890: Pos begin_pos=pc.pos;
1.91 paf 891: const char *end;
1.67 paf 892: int skip_analized=0;
1.50 paf 893: while(true) {
1.206 paf 894: c=*(end=(pc.source++));
895: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 896:
1.208 paf 897: if(c=='\n')
1.206 paf 898: pc.pos_next_line();
1.208 paf 899: else
1.206 paf 900: pc.pos_next_c(c);
1.208 paf 901: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 902:
1.208 paf 903: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 904: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 905: // @SPECIAL
906: // ...
907: // @<here =
1.206 paf 908: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 909: } // continuing checks
1.206 paf 910: if(pc.ls==LS_USER) {
911: push_LS(pc, LS_DEF_NAME);
1.171 parser 912: RC;
1.175 paf 913: } else // @ in first column inside some code [when could that be?]
1.171 parser 914: result=BAD_METHOD_DECL_START;
915: goto break2;
1.209 paf 916: }
917: if(c=='^') {
1.206 paf 918: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 919: // handle after-method situation
1.206 paf 920: pop_LS(pc);
1.203 paf 921: result=EON;
922: skip_analized=-1; // return to punctuation afterwards to assure it's literality
923: goto break2;
924: }
1.206 paf 925: switch(pc.ls) {
1.169 parser 926: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
927: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
928: case LS_VAR_NAME_SIMPLE_WITH_COLON:
929: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
930: case LS_VAR_NAME_CURLY:
931: case LS_METHOD_NAME:
1.194 paf 932: case LS_USER_COMMENT:
1.169 parser 933: case LS_DEF_COMMENT:
934: // no literals in names, please
935: break;
936: default:
1.206 paf 937: switch(*pc.source) {
1.165 parser 938: // ^escaping some punctuators
1.228 misha 939: case '^': case '$': case ';': case '@':
1.126 paf 940: case '(': case ')':
1.48 paf 941: case '[': case ']':
942: case '{': case '}':
1.172 parser 943: case '"': case ':':
1.40 paf 944: if(end!=begin) {
1.206 paf 945: if(!pc.string_start)
946: pc.string_start=begin_pos;
1.40 paf 947: // append piece till ^
1.206 paf 948: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 949: }
1.63 paf 950: // reset piece 'begin' position & line
1.206 paf 951: begin=pc.source; // ->punctuation
952: begin_pos=pc.pos;
1.203 paf 953: // skip over _ after ^
1.206 paf 954: pc.source++; pc.pos.col++;
1.203 paf 955: // skip analysis = forced literal
956: continue;
1.114 paf 957:
958: // converting ^#HH into char(hex(HH))
959: case '#':
960: if(end!=begin) {
1.206 paf 961: if(!pc.string_start)
962: pc.string_start=begin_pos;
1.114 paf 963: // append piece till ^
1.206 paf 964: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 965: }
966: // #HH ?
1.228 misha 967: if(pc.source[1] && isxdigit(pc.source[1]) && pc.source[2] && isxdigit(pc.source[2])) {
1.218 paf 968: char c=(char)(
1.206 paf 969: hex_value[(unsigned char)pc.source[1]]*0x10+
1.218 paf 970: hex_value[(unsigned char)pc.source[2]]);
1.206 paf 971: if(c==0) {
1.114 paf 972: result=BAD_HEX_LITERAL;
973: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
974: }
975: // append char(hex(HH))
1.206 paf 976: pc.string.append(c);
1.114 paf 977: // skip over ^#HH
1.206 paf 978: pc.source+=3;
979: pc.pos.col+=3;
1.114 paf 980: // reset piece 'begin' position & line
1.206 paf 981: begin=pc.source; // ->after ^#HH
982: begin_pos=pc.pos;
1.203 paf 983: // skip analysis = forced literal
1.114 paf 984: continue;
985: }
1.228 misha 986: // just escaped char
987: // reset piece 'begin' position & line
988: begin=pc.source;
989: begin_pos=pc.pos;
990: // skip over _ after ^
991: pc.source++; pc.pos.col++;
992: // skip analysis = forced literal
993: continue;
1.1 paf 994: }
1.169 parser 995: break;
1.203 paf 996: }
1.169 parser 997: }
1.113 paf 998: // #comment start skipping
1.206 paf 999: if(c=='#' && pc.pos.col==1) {
1.112 paf 1000: if(end!=begin) {
1.206 paf 1001: if(!pc.string_start)
1002: pc.string_start=begin_pos;
1.112 paf 1003: // append piece till #
1.206 paf 1004: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 1005: }
1006: // fall into COMMENT lexical state [wait for \n]
1.206 paf 1007: push_LS(pc, LS_USER_COMMENT);
1.175 paf 1008: continue;
1.112 paf 1009: }
1.206 paf 1010: switch(pc.ls) {
1.10 paf 1011:
1012: // USER'S = NOT OURS
1.1 paf 1013: case LS_USER:
1.206 paf 1014: case LS_NAME_SQUARE_PART: // name.[here].xxx
1015: if(pc.trim_bof)
1.153 parser 1016: switch(c) {
1017: case '\n': case ' ': case '\t':
1.206 paf 1018: begin=pc.source;
1019: begin_pos=pc.pos;
1.152 parser 1020: continue; // skip it
1.153 parser 1021: default:
1.206 paf 1022: pc.trim_bof=false;
1.152 parser 1023: }
1.48 paf 1024: switch(c) {
1025: case '$':
1.206 paf 1026: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1027: RC;
1028: case '^':
1.206 paf 1029: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1030: RC;
1.166 parser 1031: case ']':
1.206 paf 1032: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 1033: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 1034: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 1035: RC;
1036: }
1.160 parser 1037: break;
1.166 parser 1038: case '[': // $name.[co<[>de]
1.206 paf 1039: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 1040: lexical_brackets_nestage++;
1.161 parser 1041: break;
1.112 paf 1042: }
1.209 paf 1043: if(pc.explicit_result && c)
1044: switch(c) {
1045: case '\n': case ' ': case '\t':
1046: begin=pc.source;
1047: begin_pos=pc.pos;
1048: continue; // skip it
1049: default:
1050: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
1051: goto break2;
1052: }
1.112 paf 1053: break;
1054:
1055: // #COMMENT
1.194 paf 1056: case LS_USER_COMMENT:
1.112 paf 1057: if(c=='\n') {
1058: // skip comment
1.206 paf 1059: begin=pc.source;
1060: begin_pos=pc.pos;
1.112 paf 1061:
1.206 paf 1062: pop_LS(pc);
1.112 paf 1063: continue;
1.1 paf 1064: }
1.48 paf 1065: break;
1066:
1067: // STRING IN EXPRESSION
1.145 parser 1068: case LS_EXPRESSION_STRING_QUOTED:
1069: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 1070: switch(c) {
1071: case '"':
1.145 parser 1072: case '\'':
1073: if(
1.206 paf 1074: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
1075: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
1076: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 1077: RC;
1078: }
1079: break;
1.48 paf 1080: case '$':
1.206 paf 1081: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1082: RC;
1083: case '^':
1.206 paf 1084: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1085: RC;
1.10 paf 1086: }
1087: break;
1088:
1089: // METHOD DEFINITION
1090: case LS_DEF_NAME:
1.48 paf 1091: switch(c) {
1092: case '[':
1.206 paf 1093: pc.ls=LS_DEF_PARAMS;
1.48 paf 1094: RC;
1095: case '\n':
1.206 paf 1096: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 1097: RC;
1.10 paf 1098: }
1099: break;
1.48 paf 1100:
1.10 paf 1101: case LS_DEF_PARAMS:
1.48 paf 1102: switch(c) {
1.192 paf 1103: case '$': // common error
1.193 paf 1104: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
1105: goto break2;
1.48 paf 1106: case ';':
1107: RC;
1108: case ']':
1.206 paf 1109: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 1110: RC;
1.49 paf 1111: case '\n': // wrong. bailing out
1.206 paf 1112: pop_LS(pc);
1.48 paf 1113: RC;
1.10 paf 1114: }
1115: break;
1.48 paf 1116:
1.10 paf 1117: case LS_DEF_LOCALS:
1.48 paf 1118: switch(c) {
1119: case '[':
1120: case ';':
1121: RC;
1122: case ']':
1.206 paf 1123: pc.ls=LS_DEF_COMMENT;
1.48 paf 1124: RC;
1125: case '\n': // wrong. bailing out
1.206 paf 1126: pop_LS(pc);
1.48 paf 1127: RC;
1.10 paf 1128: }
1129: break;
1.48 paf 1130:
1.10 paf 1131: case LS_DEF_COMMENT:
1132: if(c=='\n') {
1.206 paf 1133: pop_LS(pc);
1.48 paf 1134: RC;
1.37 paf 1135: }
1136: break;
1137:
1.48 paf 1138: case LS_DEF_SPECIAL_BODY:
1.175 paf 1139: if(c=='\n')
1.48 paf 1140: RC;
1141: break;
1142:
1143: // (EXPRESSION)
1.69 paf 1144: case LS_VAR_ROUND:
1145: case LS_METHOD_ROUND:
1.48 paf 1146: switch(c) {
1147: case ')':
1148: if(--lexical_brackets_nestage==0)
1.206 paf 1149: if(pc.ls==LS_METHOD_ROUND) // method round param ended
1150: pc.ls=LS_METHOD_AFTER; // look for method end
1151: else // pc.ls==LS_VAR_ROUND // variable constructor ended
1152: pop_LS(pc); // return to normal life
1.48 paf 1153: RC;
1.194 paf 1154: case '#': // comment start skipping
1155: if(end!=begin) {
1.206 paf 1156: if(!pc.string_start)
1157: pc.string_start=begin_pos;
1.194 paf 1158: // append piece till #
1.206 paf 1159: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 1160: }
1161: // fall into COMMENT lexical state [wait for \n]
1.206 paf 1162: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 1163: lexical_brackets_nestage=1;
1164: continue;
1.48 paf 1165: case '$':
1.206 paf 1166: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 1167: RC;
1168: case '^':
1.206 paf 1169: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1170: RC;
1171: case '(':
1172: lexical_brackets_nestage++;
1173: RC;
1.67 paf 1174: case '-':
1.206 paf 1175: switch(*pc.source) {
1.127 paf 1176: case 'f': // -f
1.67 paf 1177: skip_analized=1;
1178: result=FEXISTS;
1.127 paf 1179: goto break2;
1180: case 'd': // -d
1181: skip_analized=1;
1182: result=DEXISTS;
1183: goto break2;
1.191 paf 1184: default: // minus
1.67 paf 1185: result=c;
1.127 paf 1186: goto break2;
1187: }
1.67 paf 1188: goto break2;
1.173 paf 1189: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 1190: case '~':
1.48 paf 1191: case ';':
1192: RC;
1.193 paf 1193: case '&': case '|':
1.206 paf 1194: if(*pc.source==c) { // && ||
1.193 paf 1195: result=c=='&'?LAND:LOR;
1.67 paf 1196: skip_analized=1;
1.58 paf 1197: } else
1198: result=c;
1199: goto break2;
1.193 paf 1200: case '!':
1.206 paf 1201: switch(pc.source[0]) {
1.193 paf 1202: case '|': // !| !||
1203: skip_analized=1;
1.206 paf 1204: if(pc.source[1]=='|') {
1.193 paf 1205: skip_analized++;
1206: result=LXOR;
1207: } else
1208: result=NXOR;
1209: goto break2;
1210: case '=': // !=
1211: skip_analized=1;
1212: result=NNE;
1213: goto break2;
1214: }
1215: RC;
1.195 paf 1216:
1217: case '<': // <<, <=, <
1.206 paf 1218: switch(*pc.source) {
1.195 paf 1219: case '<': // <[<]
1220: skip_analized=1; result=NSL; break;
1221: case '=': // <[=]
1222: skip_analized=1; result=NLE; break;
1223: default: // <[]
1224: result=c; break;
1225: }
1226: goto break2;
1227: case '>': // >>, >=, >
1.206 paf 1228: switch(*pc.source) {
1.195 paf 1229: case '>': // >[>]
1230: skip_analized=1; result=NSR; break;
1231: case '=': // >[=]
1232: skip_analized=1; result=NGE; break;
1233: default: // >[]
1234: result=c; break;
1235: }
1236: goto break2;
1237: case '=': // ==
1.206 paf 1238: switch(*pc.source) {
1.195 paf 1239: case '=': // =[=]
1240: skip_analized=1; result=NEQ; break;
1241: default: // =[]
1242: result=c; break; // not used now
1243: }
1.58 paf 1244: goto break2;
1.195 paf 1245:
1.48 paf 1246: case '"':
1.206 paf 1247: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1248: RC;
1249: case '\'':
1.206 paf 1250: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1251: RC;
1.50 paf 1252: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1253: if(end==begin) // right after whitespace
1.206 paf 1254: if(isspace(pc.source[1])) {
1255: switch(*pc.source) {
1.117 paf 1256: // case '?': // ok [and bad cases, yacc would bark at them]
1257: case 't': // lt gt [et nt]
1258: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1259: skip_analized=1;
1260: goto break2;
1261: case 'e': // le ge ne [ee]
1262: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1263: skip_analized=1;
1264: goto break2;
1265: case 'q': // eq [lq gq nq]
1266: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1267: skip_analized=1;
1268: goto break2;
1269: }
1.67 paf 1270: }
1271: break;
1272: case 'i':
1273: if(end==begin) // right after whitespace
1.206 paf 1274: if(isspace(pc.source[1])) {
1275: switch(pc.source[0]) {
1.117 paf 1276: case 'n': // in
1.95 paf 1277: skip_analized=1;
1278: result=IN;
1279: goto break2;
1.117 paf 1280: case 's': // is
1.95 paf 1281: skip_analized=1;
1282: result=IS;
1283: goto break2;
1284: }
1.67 paf 1285: }
1286: break;
1287: case 'd':
1288: if(end==begin) // right after whitespace
1.206 paf 1289: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.225 misha 1290: switch(pc.source[2]){
1291: case ' ': case '\t': case '\n': case '"': case '\'': case '^': case '$': // non-quoted string without whitespace after 'def' is not allowed
1292: skip_analized=2;
1293: result=DEF;
1294: goto break2;
1295: }
1296: // error: incorrect char after 'def'
1.50 paf 1297: }
1.48 paf 1298: break;
1.216 paf 1299: case 't':
1300: if(end==begin) // right after whitespace
1.225 misha 1301: if(pc.source[0]=='r' && pc.source[1]=='u' && pc.source[2]=='e') { // true
1.216 paf 1302: skip_analized=3;
1303: result=LITERAL_TRUE;
1304: goto break2;
1305: }
1306: break;
1307: case 'f':
1308: if(end==begin) // right after whitespace
1.225 misha 1309: if(pc.source[0]=='a' && pc.source[1]=='l' && pc.source[2]=='s' && pc.source[3]=='e') { // false
1.216 paf 1310: skip_analized=4;
1311: result=LITERAL_FALSE;
1312: goto break2;
1313: }
1314: break;
1.48 paf 1315: case ' ': case '\t': case '\n':
1.63 paf 1316: if(end!=begin) { // there were a string after previous operator?
1317: result=0; // return that string
1318: goto break2;
1.48 paf 1319: }
1.63 paf 1320: // that's a leading|traling space or after-operator-space
1321: // ignoring it
1322: // reset piece 'begin' position & line
1.206 paf 1323: begin=pc.source; // after whitespace char
1324: begin_pos=pc.pos;
1.48 paf 1325: continue;
1.1 paf 1326: }
1327: break;
1.194 paf 1328: case LS_EXPRESSION_COMMENT:
1329: if(c=='(')
1330: lexical_brackets_nestage++;
1331:
1.206 paf 1332: switch(*pc.source) {
1.194 paf 1333: case '\n': case ')':
1.206 paf 1334: if(*pc.source==')')
1.194 paf 1335: if(--lexical_brackets_nestage!=0)
1336: continue;
1337:
1338: // skip comment
1.206 paf 1339: begin=pc.source;
1340: begin_pos=pc.pos;
1.194 paf 1341:
1.206 paf 1342: pop_LS(pc);
1.194 paf 1343: continue;
1344: }
1345: break;
1.1 paf 1346:
1.10 paf 1347: // VARIABLE GET/PUT/WITH
1.166 parser 1348: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1349: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1350: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1351: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1352: if(
1.206 paf 1353: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1354: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1355: // name in expr ends also before
1.48 paf 1356: switch(c) {
1.181 paf 1357: // expression minus
1.92 paf 1358: case '-':
1.181 paf 1359: // expression integer division
1360: case '\\':
1.206 paf 1361: pop_LS(pc);
1362: pc.ungetc();
1.48 paf 1363: result=EON;
1364: goto break2;
1365: }
1366: }
1.166 parser 1367: if(
1.206 paf 1368: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1369: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1370: // name already has ':', stop before next
1371: switch(c) {
1372: case ':':
1.206 paf 1373: pop_LS(pc);
1374: pc.ungetc();
1.142 parser 1375: result=EON;
1376: goto break2;
1377: }
1378: }
1.48 paf 1379: switch(c) {
1380: case 0:
1381: case ' ': case '\t': case '\n':
1382: case ';':
1.126 paf 1383: case ']': case '}': case ')':
1384: case '"': case '\'':
1.139 parser 1385: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.253 misha 1386: case '+': case '*': case '/': case '\\': case '%':
1.92 paf 1387: case '&': case '|':
1388: case '=': case '!':
1.99 paf 1389: // common delimiters
1.190 paf 1390: case ',': case '?': case '#':
1.220 paf 1391: // mysql column separators
1392: case '`':
1.139 parser 1393: // before call
1394: case '^':
1.206 paf 1395: pop_LS(pc);
1396: pc.ungetc();
1.13 paf 1397: result=EON;
1.1 paf 1398: goto break2;
1.48 paf 1399: case '[':
1.162 parser 1400: // $name.<[>code]
1.206 paf 1401: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1402: end[-1]=='$'/*was start of get*/ ||
1403: end[-1]==':'/*was class name delim */ ||
1404: end[-1]=='.'/*was name delim */
1.162 parser 1405: )) {
1.206 paf 1406: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1407: lexical_brackets_nestage=1;
1408: RC;
1409: }
1.206 paf 1410: pc.ls=LS_VAR_SQUARE;
1.1 paf 1411: lexical_brackets_nestage=1;
1.48 paf 1412: RC;
1413: case '{':
1414: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1415: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1416: } else {
1.206 paf 1417: pc.ls=LS_VAR_CURLY;
1.48 paf 1418: lexical_brackets_nestage=1;
1419: }
1.69 paf 1420:
1.48 paf 1421: RC;
1422: case '(':
1.206 paf 1423: pc.ls=LS_VAR_ROUND;
1.1 paf 1424: lexical_brackets_nestage=1;
1.48 paf 1425: RC;
1426: case '.': // name part delim
1427: case '$': // name part subvar
1.160 parser 1428: case ':': // class<:>name
1.166 parser 1429: // go to _WITHOUT_COLON state variant...
1.206 paf 1430: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1431: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1432: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1433: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1434: // ...stop before next ':'
1.48 paf 1435: RC;
1.1 paf 1436: }
1437: break;
1.48 paf 1438:
1.1 paf 1439: case LS_VAR_NAME_CURLY:
1.48 paf 1440: switch(c) {
1.162 parser 1441: case '[':
1.166 parser 1442: // ${name.<[>code]}
1.206 paf 1443: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1444: lexical_brackets_nestage=1;
1445: RC;
1.48 paf 1446: case '}': // ${name} finished, restoring LS
1.206 paf 1447: pop_LS(pc);
1.48 paf 1448: RC;
1449: case '.': // name part delim
1450: case '$': // name part subvar
1451: case ':': // ':name' or 'class:name'
1452: RC;
1.1 paf 1453: }
1454: break;
1.48 paf 1455:
1456: case LS_VAR_SQUARE:
1457: switch(c) {
1458: case '$':
1.206 paf 1459: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1460: RC;
1461: case '^':
1.206 paf 1462: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1463: RC;
1464: case ']':
1.1 paf 1465: if(--lexical_brackets_nestage==0) {
1.206 paf 1466: pop_LS(pc);
1.48 paf 1467: RC;
1.1 paf 1468: }
1.48 paf 1469: break;
1470: case ';': // operator_or_fmt;value delim
1471: RC;
1472: case '[':
1473: lexical_brackets_nestage++;
1474: break;
1.1 paf 1475: }
1476: break;
1.48 paf 1477:
1.1 paf 1478: case LS_VAR_CURLY:
1.48 paf 1479: switch(c) {
1480: case '$':
1.206 paf 1481: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1482: RC;
1483: case '^':
1.206 paf 1484: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1485: RC;
1486: case '}':
1.1 paf 1487: if(--lexical_brackets_nestage==0) {
1.206 paf 1488: pop_LS(pc);
1.48 paf 1489: RC;
1.1 paf 1490: }
1.48 paf 1491: break;
1492: case '{':
1.1 paf 1493: lexical_brackets_nestage++;
1.48 paf 1494: break;
1495: }
1.1 paf 1496: break;
1497:
1.10 paf 1498: // METHOD CALL
1.1 paf 1499: case LS_METHOD_NAME:
1.48 paf 1500: switch(c) {
1501: case '[':
1.166 parser 1502: // ^name.<[>code].xxx
1.206 paf 1503: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1504: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1505: end[-1]==':'/*was class name delim */ ||
1506: end[-1]=='.'/*was name delim */
1.162 parser 1507: )) {
1.206 paf 1508: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1509: lexical_brackets_nestage=1;
1510: RC;
1511: }
1.206 paf 1512: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1513: lexical_brackets_nestage=1;
1.48 paf 1514: RC;
1515: case '{':
1.206 paf 1516: pc.ls=LS_METHOD_CURLY;
1.1 paf 1517: lexical_brackets_nestage=1;
1.48 paf 1518: RC;
1.69 paf 1519: case '(':
1.206 paf 1520: pc.ls=LS_METHOD_ROUND;
1.69 paf 1521: lexical_brackets_nestage=1;
1522: RC;
1.48 paf 1523: case '.': // name part delim
1524: case '$': // name part subvar
1525: case ':': // ':name' or 'class:name'
1.170 parser 1526: case '^': // ^abc^xxx wrong. bailing out
1527: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1528: case ' ': // ^if ( wrong. bailing out
1.48 paf 1529: RC;
1.1 paf 1530: }
1531: break;
1.48 paf 1532:
1533: case LS_METHOD_SQUARE:
1534: switch(c) {
1535: case '$':
1.206 paf 1536: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1537: RC;
1538: case '^':
1.206 paf 1539: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1540: RC;
1541: case ';': // param delim
1542: RC;
1543: case ']':
1.1 paf 1544: if(--lexical_brackets_nestage==0) {
1.206 paf 1545: pc.ls=LS_METHOD_AFTER;
1.48 paf 1546: RC;
1.1 paf 1547: }
1.48 paf 1548: break;
1549: case '[':
1.1 paf 1550: lexical_brackets_nestage++;
1.48 paf 1551: break;
1552: }
1.1 paf 1553: break;
1.48 paf 1554:
1.1 paf 1555: case LS_METHOD_CURLY:
1.48 paf 1556: switch(c) {
1557: case '$':
1.206 paf 1558: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1559: RC;
1560: case '^':
1.206 paf 1561: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1562: RC;
1563: case ';': // param delim
1.48 paf 1564: RC;
1565: case '}':
1.1 paf 1566: if(--lexical_brackets_nestage==0) {
1.206 paf 1567: pc.ls=LS_METHOD_AFTER;
1.48 paf 1568: RC;
1.1 paf 1569: }
1.48 paf 1570: break;
1571: case '{':
1.1 paf 1572: lexical_brackets_nestage++;
1.48 paf 1573: break;
1574: }
1.209 paf 1575: if(pc.explicit_result && c)
1576: switch(c) {
1577: case '\n': case ' ': case '\t':
1578: begin=pc.source;
1579: begin_pos=pc.pos;
1580: continue; // skip it
1581: default:
1582: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
1583: goto break2;
1584: }
1.1 paf 1585: break;
1.48 paf 1586:
1.1 paf 1587: case LS_METHOD_AFTER:
1.69 paf 1588: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1589: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1590: lexical_brackets_nestage=1;
1.48 paf 1591: RC;
1.1 paf 1592: }
1.69 paf 1593: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1594: pc.ls=LS_METHOD_CURLY;
1.69 paf 1595: lexical_brackets_nestage=1;
1596: RC;
1597: }
1598: if(c=='(') {/* ]( }( )( */
1.206 paf 1599: pc.ls=LS_METHOD_ROUND;
1.1 paf 1600: lexical_brackets_nestage=1;
1.48 paf 1601: RC;
1.1 paf 1602: }
1.206 paf 1603: pop_LS(pc);
1604: pc.ungetc();
1.13 paf 1605: result=EON;
1.1 paf 1606: goto break2;
1607: }
1.9 paf 1608: if(c==0) {
1.1 paf 1609: result=-1;
1610: break;
1611: }
1612: }
1613:
1614: break2:
1.59 paf 1615: if(end!=begin) { // there is last piece?
1.258 misha 1616: if(c=='@' || c==0) // we are before LS_DEF_NAME or EOF?
1617: while(end!=begin && end[-1]=='\n') // trim all empty lines before LS_DEF_NAME and EOF
1.137 parser 1618: end--;
1.206 paf 1619: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1620: if(!pc.string_start)
1621: pc.string_start=begin_pos;
1.59 paf 1622: // append it
1.206 paf 1623: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1624: }
1.59 paf 1625: }
1.206 paf 1626: if(!pc.string.is_empty()) { // something accumulated?
1627: // create STRING value: array of OP_VALUE+origin+vstring
1628: *lvalp=VL(
1629: new VString(*new String(pc.string, String::L_CLEAN)),
1630: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1631: // new pieces storage
1.206 paf 1632: pc.string.clear();
1633: pc.string_start.clear();
1.58 paf 1634: // make current result be pending for next call, return STRING for now
1.206 paf 1635: pc.pending_state=result; result=STRING;
1.58 paf 1636: }
1.67 paf 1637: if(skip_analized) {
1.206 paf 1638: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1639: }
1.58 paf 1640: return result;
1.1 paf 1641: }
1642:
1.264 moko 1643: static int real_yyerror(Parse_control *pc, const char *s) { // Called by yyparse on error
1.114 paf 1644: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1645: return 1;
1.110 paf 1646: }
1.1 paf 1647:
1.110 paf 1648: static void yyprint(FILE *file, int type, YYSTYPE value) {
1649: if(type==STRING)
1.206 paf 1650: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1651: }
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