Annotation of parser3/src/main/compile.y, revision 1.244
1.168 parser 1: %{
1.105 paf 2: /** @file
1.106 paf 3: Parser: compiler(lexical parser and grammar).
4:
1.239 misha 5: Copyright (c) 2001-2009 ArtLebedev Group (http://www.artlebedev.com)
1.168 parser 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.217 paf 7:
1.244 ! misha 8: $Id: compile.y,v 1.243 2009-05-24 07:32:40 misha Exp $
1.88 paf 9: */
10:
1.106 paf 11: /**
12: @todo parser4:
13: - cache compiled code from request to request. to do that...
14: -#: make method definitions, @CLASS, @BASE, @USE instructions,
1.88 paf 15: which would be executed afterwards, and actions
16: now performed at compile time would be delayed to run time.
1.106 paf 17: -#: make cache expiration on time and on disk-change of class source
18: -#: in apache use subpools for compiled class storage
19: -#: in iis make up specialized Pool object for that
1.24 paf 20: */
21:
1.206 paf 22: #define YYSTYPE ArrayOperation*
1.9 paf 23: #define YYPARSE_PARAM pc
24: #define YYLEX_PARAM pc
25: #define YYDEBUG 1
1.106 paf 26: #define YYERROR_VERBOSE 1
1.206 paf 27: #define yyerror(msg) real_yyerror((Parse_control *)pc, msg)
1.9 paf 28: #define YYPRINT(file, type, value) yyprint(file, type, value)
1.1 paf 29:
1.206 paf 30: // includes
31:
1.1 paf 32: #include "compile_tools.h"
1.8 paf 33: #include "pa_value.h"
1.12 paf 34: #include "pa_request.h"
1.39 paf 35: #include "pa_vobject.h"
1.52 paf 36: #include "pa_vdouble.h"
1.98 paf 37: #include "pa_globals.h"
1.141 parser 38: #include "pa_vvoid.h"
1.200 paf 39: #include "pa_vmethod_frame.h"
1.39 paf 40:
1.206 paf 41: // defines
42:
1.97 paf 43: #define USE_CONTROL_METHOD_NAME "USE"
1.226 misha 44: #define OPTIONS_CONTROL_METHOD_NAME "OPTIONS"
45: #define OPTION_ALL_VARS_LOCAL_NAME "locals"
1.230 misha 46: #define OPTION_PARTIAL_CLASS "partial"
1.238 misha 47: #define REM_OPERATOR_NAME "rem"
1.1 paf 48:
1.206 paf 49: // forwards
50:
51: static int real_yyerror(Parse_control* pc, char* s);
52: static void yyprint(FILE* file, int type, YYSTYPE value);
53: static int yylex(YYSTYPE* lvalp, void* pc);
1.1 paf 54:
1.216 paf 55: static const VBool vfalse(false);
56: static const VBool vtrue(true);
57: static const VVoid vvoid;
58:
1.8 paf 59: // local convinient inplace typecast & var
1.205 paf 60: #undef PC
1.206 paf 61: #define PC (*(Parse_control *)pc)
62: #undef POOL
1.114 paf 63: #define POOL (*PC.pool)
1.107 paf 64: #ifndef DOXYGEN
1.1 paf 65: %}
66:
67: %pure_parser
68:
1.13 paf 69: %token EON
1.4 paf 70: %token STRING
1.1 paf 71: %token BOGUS
1.55 paf 72:
1.58 paf 73: %token BAD_STRING_COMPARISON_OPERATOR
1.114 paf 74: %token BAD_HEX_LITERAL
1.171 parser 75: %token BAD_METHOD_DECL_START
1.193 paf 76: %token BAD_METHOD_PARAMETER_NAME_CHARACTER
1.209 paf 77: %token BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE
1.58 paf 78:
1.59 paf 79: %token LAND "&&"
1.58 paf 80: %token LOR "||"
1.193 paf 81: %token LXOR "!||"
82: %token NXOR "!|"
1.58 paf 83:
84: %token NLE "<="
85: %token NGE ">="
86: %token NEQ "=="
87: %token NNE "!="
1.195 paf 88: %token NSL "<<"
89: %token NSR ">>"
1.58 paf 90:
91: %token SLT "lt"
92: %token SGT "gt"
93: %token SLE "le"
94: %token SGE "ge"
95: %token SEQ "eq"
96: %token SNE "ne"
97:
1.67 paf 98: %token DEF "def"
99: %token IN "in"
100: %token FEXISTS "-f"
1.127 paf 101: %token DEXISTS "-d"
1.95 paf 102: %token IS "is"
1.67 paf 103:
1.216 paf 104: %token LITERAL_TRUE "true"
105: %token LITERAL_FALSE "false"
106:
1.57 paf 107: /* logical */
1.193 paf 108: %left "!||"
1.57 paf 109: %left "||"
110: %left "&&"
1.131 paf 111: %left '<' '>' "<=" ">=" "lt" "gt" "le" "ge"
112: %left "==" "!=" "eq" "ne"
113: %left "is" "def" "in" "-f" "-d"
1.57 paf 114:
115: /* bitwise */
1.193 paf 116: %left "!|"
1.131 paf 117: %left '|'
118: %left '&'
1.202 paf 119: %left "<<" ">>"
1.57 paf 120:
1.56 paf 121: /* numerical */
1.202 paf 122: %left '+' '-'
123: %left '*' '/' '\\' '%'
124: %left NUNARY /* unary - + */
125:
126: /* out-of-group */
127: %left '~' /* bitwise */
128: %left '!' /* logical */
1.1 paf 129:
130: %%
1.195 paf 131: all:
1.10 paf 132: one_big_piece {
1.206 paf 133: Method& method=*new Method(Method::CT_ANY,
1.81 paf 134: 0, 0, /*min, max numbered_params_count*/
1.75 paf 135: 0/*param_names*/, 0/*local_names*/,
136: $1/*parser_code*/, 0/*native_code*/);
1.206 paf 137: PC.cclass->add_method(PC.alias_method(main_method_name), method);
1.10 paf 138: }
139: | methods;
140:
141: methods: method | methods method;
142: one_big_piece: maybe_codes;
143:
1.34 paf 144: method: control_method | code_method;
145:
146: control_method: '@' STRING '\n'
1.132 paf 147: maybe_control_strings {
1.206 paf 148: const String& command=*LA2S(*$2);
1.34 paf 149: YYSTYPE strings_code=$4;
1.206 paf 150: if(strings_code->count()<1*OPERATIONS_PER_OPVALUE) {
1.114 paf 151: strcpy(PC.error, "@");
152: strcat(PC.error, command.cstr());
153: strcat(PC.error, " is empty");
1.37 paf 154: YYERROR;
155: }
1.74 paf 156: if(command==CLASS_NAME) {
1.206 paf 157: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.73 paf 158: // new class' name
1.206 paf 159: const String& name=*LA2S(*strings_code);
1.73 paf 160: // creating the class
1.206 paf 161: VStateless_class* cclass=new VClass;
1.226 misha 162: PC.cclass_new=cclass;
163: PC.cclass_new->set_name(name);
1.73 paf 164: } else {
1.206 paf 165: strcpy(PC.error, "@"CLASS_NAME" must contain only one line with class name (contains more then one)");
1.34 paf 166: YYERROR;
167: }
1.130 paf 168: } else if(command==USE_CONTROL_METHOD_NAME) {
1.206 paf 169: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE)
170: PC.request.use_file(PC.request.main_class, *LA2S(*strings_code, i));
1.130 paf 171: } else if(command==BASE_NAME) {
1.226 misha 172: if(PC.append){
173: strcpy(PC.error, "can't set base while appending methods to class '");
174: strncat(PC.error, PC.cclass->name().cstr(), MAX_STRING/2);
175: strcat(PC.error, "'");
176: YYERROR;
177: }
178: PC.class_add();
1.188 paf 179: if(PC.cclass->base_class()) { // already changed from default?
1.130 paf 180: strcpy(PC.error, "class already have a base '");
1.226 misha 181: strncat(PC.error, PC.cclass->base_class()->name().cstr(), MAX_STRING/2);
1.130 paf 182: strcat(PC.error, "'");
183: YYERROR;
184: }
1.206 paf 185: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
186: const String& base_name=*LA2S(*strings_code);
187: if(Value* base_class_value=PC.request.classes().get(base_name)) {
188: // @CLASS == @BASE sanity check
189: if(VStateless_class *base_class=base_class_value->get_class()) {
190: if(PC.cclass==base_class) {
191: strcpy(PC.error, "@"CLASS_NAME" equals @"BASE_NAME);
192: YYERROR;
193: }
194: PC.cclass->get_class()->set_base(base_class);
195: } else { // they asked to derive from a class without methods ['env' & co]
196: strcpy(PC.error, base_name.cstr());
197: strcat(PC.error, ": you can not derive from this class in @"BASE_NAME);
198: YYERROR;
199: }
200: } else {
1.130 paf 201: strcpy(PC.error, base_name.cstr());
202: strcat(PC.error, ": undefined class in @"BASE_NAME);
1.73 paf 203: YYERROR;
204: }
1.34 paf 205: } else {
1.130 paf 206: strcpy(PC.error, "@"BASE_NAME" must contain sole name");
1.34 paf 207: YYERROR;
208: }
1.223 misha 209: } else if(command==OPTIONS_CONTROL_METHOD_NAME) {
210: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE) {
211: const String& option=*LA2S(*strings_code, i);
1.226 misha 212: if(option==OPTION_ALL_VARS_LOCAL_NAME){
213: PC.set_all_vars_local();
1.230 misha 214: } else if(option==OPTION_PARTIAL_CLASS){
215: if(PC.cclass_new){
216: if(VStateless_class* existed=PC.get_existed_class(PC.cclass_new)){
217: if(!PC.reuse_existed_class(existed)){
218: strcpy(PC.error, "can't append methods to '");
219: strncat(PC.error, PC.cclass_new->name().cstr(), MAX_STRING/2);
220: strcat(PC.error, "' - the class wasn't marked as partial");
221: YYERROR;
222: }
1.226 misha 223: } else {
1.230 misha 224: // mark new class as partial. we can add methods to it later.
225: PC.cclass_new->set_partial();
1.226 misha 226: }
1.230 misha 227: } else {
228: strcpy(PC.error, "'"OPTION_PARTIAL_CLASS"' option should be used straight after @"CLASS_NAME);
1.226 misha 229: YYERROR;
230: }
1.223 misha 231: } else {
1.226 misha 232: strcpy(PC.error, "'");
233: strncat(PC.error, option.cstr(), MAX_STRING/2);
234: strcat(PC.error, "' invalid option. valid options are "
1.230 misha 235: "'"OPTION_PARTIAL_CLASS"' and '"OPTION_ALL_VARS_LOCAL_NAME"'");
1.223 misha 236: YYERROR;
237: }
238: }
1.130 paf 239: } else {
240: strcpy(PC.error, "'");
241: strncat(PC.error, command.cstr(), MAX_STRING/2);
242: strcat(PC.error, "' invalid special name. valid names are "
1.223 misha 243: "'"CLASS_NAME"', '"USE_CONTROL_METHOD_NAME"', '"BASE_NAME"' and '"OPTIONS_CONTROL_METHOD_NAME"'.");
1.130 paf 244: YYERROR;
1.34 paf 245: }
246: };
1.132 paf 247: maybe_control_strings: empty | control_strings;
1.206 paf 248: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2) };
1.37 paf 249: control_string: maybe_string '\n';
250: maybe_string: empty | STRING;
1.34 paf 251:
1.222 misha 252: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n' {
1.226 misha 253: PC.class_add();
1.208 paf 254: PC.explicit_result=false;
1.10 paf 255:
256: YYSTYPE params_names_code=$3;
1.206 paf 257: ArrayString* params_names=0;
258: if(int size=params_names_code->count()) {
259: params_names=new ArrayString;
260: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
261: *params_names+=LA2S(*params_names_code, i);
1.75 paf 262: }
1.10 paf 263:
264: YYSTYPE locals_names_code=$4;
1.206 paf 265: ArrayString* locals_names=0;
1.223 misha 266: bool all_vars_local=false;
1.206 paf 267: if(int size=locals_names_code->count()) {
268: locals_names=new ArrayString;
1.208 paf 269: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE) {
270: const String* local_name=LA2S(*locals_names_code, i);
271: if(*local_name==RESULT_VAR_NAME)
272: PC.explicit_result=true;
1.226 misha 273: else if(*local_name==OPTION_ALL_VARS_LOCAL_NAME)
1.223 misha 274: all_vars_local=true;
1.208 paf 275: else
276: *locals_names+=local_name;
277: }
1.75 paf 278: }
1.231 misha 279: if(!all_vars_local && PC.cclass && PC.cclass->is_vars_local())
1.223 misha 280: all_vars_local=true;
1.10 paf 281:
1.208 paf 282: Method* method=new Method(
1.206 paf 283: //name,
1.122 paf 284: Method::CT_ANY,
1.81 paf 285: 0, 0/*min,max numbered_params_count*/,
1.76 paf 286: params_names, locals_names,
1.223 misha 287: 0/*to be filled later in next {} */, 0, all_vars_local);
1.221 misha 288:
1.208 paf 289: *reinterpret_cast<Method**>(&$$)=method;
290:
291: // todo: check [][;result;]
1.222 misha 292: } maybe_codes {
1.231 misha 293: Method& method=*reinterpret_cast<Method*>($7);
294: // fill in the code
295: method.parser_code=$8;
296:
297: // register in class
298: const String& name=*LA2S(*$2);
299: PC.cclass->add_method(PC.alias_method(name), method);
1.8 paf 300: };
1.10 paf 301:
302: maybe_bracketed_strings: empty | bracketed_maybe_strings;
303: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
304: maybe_strings: empty | strings;
1.206 paf 305: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3) };
1.10 paf 306:
307: maybe_comment: empty | STRING;
1.1 paf 308:
309: /* codes */
310:
1.10 paf 311: maybe_codes: empty | codes;
312:
1.206 paf 313: codes: code | codes code { $$=$1; P(*$$, *$2) };
1.81 paf 314: code: write_string | action;
1.209 paf 315: action: get | put | call;
1.1 paf 316:
317: /* get */
318:
1.64 paf 319: get: get_value {
1.238 misha 320: $$=N();
321: YYSTYPE code=$1;
1.235 misha 322: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.239 misha 323: if(!maybe_change_first_opcode(*code, OP::OP_VALUE__GET_ELEMENT, /*=>*/OP::OP_VALUE__GET_ELEMENT__WRITE))
1.238 misha 324: #endif
1.239 misha 325:
326: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
1.244 ! misha 327: if(
! 328: code->count()!=5
! 329: || !maybe_change_first_opcode(*code, OP::OP_GET_OBJECT_ELEMENT, /*=>*/OP::OP_GET_OBJECT_ELEMENT__WRITE)
! 330: )
1.239 misha 331: #endif
332:
333: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
1.244 ! misha 334: if(
! 335: code->count()!=5
! 336: || !maybe_change_first_opcode(*code, OP::OP_GET_OBJECT_VAR_ELEMENT, /*=>*/OP::OP_GET_OBJECT_VAR_ELEMENT__WRITE)
! 337: )
1.238 misha 338: #endif
1.244 ! misha 339: {
! 340: changetail_or_append(*code,
! 341: OP::OP_GET_ELEMENT, false, /*=>*/OP::OP_GET_ELEMENT__WRITE,
! 342: /*or */OP::OP_WRITE_VALUE
! 343: ); /* value=pop; wcontext.write(value) */
! 344: }
1.239 misha 345:
1.238 misha 346: P(*$$, *code);
1.1 paf 347: };
1.163 parser 348: get_value: '$' get_name_value { $$=$2 };
1.64 paf 349: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 350: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 351: name_without_curly_rdive:
352: name_without_curly_rdive_read
353: | name_without_curly_rdive_class;
1.19 paf 354: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 355: $$=N();
1.238 misha 356: YYSTYPE diving_code=$1;
1.206 paf 357: const String* first_name=LA2S(*diving_code);
1.239 misha 358: size_t count=diving_code->count();
1.238 misha 359: // self.xxx... => xxx...
1.206 paf 360: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 361: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.238 misha 362: O(*$$, OP::OP_WITH_SELF); /* stack: starting context */
363: P(*$$, *diving_code,
1.22 paf 364: /* skip over... */
1.239 misha 365: count>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP::OP_+origin+string*/);
366: }
367:
368: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
1.240 misha 369: else if(maybe_make_get_object_element(*$$, *diving_code, count)){
1.239 misha 370: // optimisation for $object.field + ^object.method[
371: }
1.238 misha 372: #endif
1.239 misha 373:
374: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
1.240 misha 375: else if(maybe_make_get_object_var_element(*$$, *diving_code, count)){
1.239 misha 376: // optimisation for $object.$var
377: }
1.238 misha 378: #endif
1.239 misha 379:
380: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
381: else if(count==4){ // optimization
382: O(*$$,
383: (PC.in_call_value)
384: ? OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR // ^object[ : OP_VALUE+origin+string+OP_GET_ELEMENT => OP_VALUE__GET_ELEMENT_OR_OPERATOR+origin+string
385: : OP::OP_VALUE__GET_ELEMENT // $object : OP_VALUE+origin+string+OP_GET_ELEMENT => OP_VALUE__GET_ELEMENT+origin+string
386: );
387: P(*$$, *diving_code, 1/*offset*/, 2/*limit*/); // copy origin+value
388: } else {
389: O(*$$, OP::OP_WITH_READ); /* stack: starting context */
390: P(*$$, *diving_code);
391: }
1.233 misha 392: #else
1.239 misha 393: else {
1.238 misha 394: O(*$$, OP::OP_WITH_READ); /* stack: starting context */
1.179 paf 395:
1.238 misha 396: // ^if OP_ELEMENT => ^if OP_ELEMENT_OR_OPERATOR
397: // optimized OP_VALUE+origin+string+OP_GET_ELEMENT. => OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
1.239 misha 398: if(PC.in_call_value && count==4)
399: diving_code->put(count-1, OP::OP_GET_ELEMENT_OR_OPERATOR);
1.206 paf 400: P(*$$, *diving_code);
1.239 misha 401: }
1.233 misha 402: #endif
1.22 paf 403: /* diving code; stack: current context */
1.1 paf 404: };
1.206 paf 405: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2) };
406: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2) };
1.1 paf 407:
408: /* put */
409:
1.81 paf 410: put: '$' name_expr_wdive construct {
1.241 misha 411: $$=N();
1.244 ! misha 412: #ifdef OPTIMIZE_BYTECODE_CONSTRUCT
! 413: if(maybe_optimize_construct(*$$, *$2, *$3)){
! 414: // $a(expr), $.a(expr), $a[value], $.a[value]
1.241 misha 415: } else
416: #endif
417: {
418: P(*$$, *$2); /* stack: context,name */
419: P(*$$, *$3); /* stack: context,name,constructor_value */
420: }
1.20 paf 421: };
1.44 paf 422: name_expr_wdive:
1.157 parser 423: name_expr_wdive_root
424: | name_expr_wdive_write
1.44 paf 425: | name_expr_wdive_class;
1.157 parser 426: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 427: $$=N();
1.238 misha 428: YYSTYPE diving_code=$1;
1.206 paf 429: const String* first_name=LA2S(*diving_code);
1.238 misha 430: // $self.xxx... => $xxx...
431: // OP_VALUE+origin+string+OP_GET_ELEMENT+... => OP_WITH_SELF+...
1.85 paf 432: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.229 misha 433: O(*$$, OP::OP_WITH_SELF); /* stack: starting context */
1.206 paf 434: P(*$$, *diving_code,
1.23 paf 435: /* skip over... */
1.229 misha 436: diving_code->count()>=4?4/*OP::OP_VALUE+origin+string+OP::OP_GET_ELEMENTx*/:3/*OP::OP_+origin+string*/);
1.23 paf 437: } else {
1.229 misha 438: O(*$$, OP::OP_WITH_ROOT); /* stack: starting context */
1.206 paf 439: P(*$$, *diving_code);
1.23 paf 440: }
441: /* diving code; stack: current context */
1.156 parser 442: };
1.157 parser 443: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 444: $$=N();
1.229 misha 445: O(*$$, OP::OP_WITH_WRITE); /* stack: starting context */
1.206 paf 446: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 447: };
1.206 paf 448: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2) };
1.20 paf 449:
1.244 ! misha 450: construct:
1.163 parser 451: construct_square
452: | construct_round
453: | construct_curly
1.149 parser 454: ;
1.211 paf 455: construct_square: '[' {
456: // allow $result_or_other_variable[ letters here any time ]
457: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
458: } any_constructor_code_value {
1.213 paf 459: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.211 paf 460: } ']' {
1.149 parser 461: // stack: context, name
1.211 paf 462: $$=$3; // stack: context, name, value
1.229 misha 463: O(*$$, OP::OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 464: }
465: ;
1.149 parser 466: construct_round: '(' expr_value ')' {
1.206 paf 467: $$=N();
1.229 misha 468: O(*$$, OP::OP_PREPARE_TO_EXPRESSION);
1.149 parser 469: // stack: context, name
1.206 paf 470: P(*$$, *$2); // stack: context, name, value
1.229 misha 471: O(*$$, OP::OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 472: }
1.52 paf 473: ;
1.149 parser 474: construct_curly: '{' maybe_codes '}' {
475: // stack: context, name
1.206 paf 476: $$=N();
1.229 misha 477: OA(*$$, OP::OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 478: };
479:
1.55 paf 480: any_constructor_code_value:
1.157 parser 481: void_value /* optimized $var[] case */
1.52 paf 482: | STRING /* optimized $var[STRING] case */
1.55 paf 483: | constructor_code_value /* $var[something complex] */
1.1 paf 484: ;
1.55 paf 485: constructor_code_value: constructor_code {
1.206 paf 486: $$=N();
1.229 misha 487: OA(*$$, OP::OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 488: /* some code that writes to that context */
489: /* context=pop; stack: context.value() */
1.1 paf 490: };
1.55 paf 491: constructor_code: codes__excluding_sole_str_literal;
1.206 paf 492: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 493:
1.1 paf 494: /* call */
495:
1.66 paf 496: call: call_value {
1.238 misha 497: #ifdef OPTIMIZE_BYTECODE_CUT_REM_OPERATOR
498: if((*$1).count())
499: #endif
500: {
501: $$=$1; /* stack: value */
502: changetail_or_append(*$$,
503: OP::OP_CALL, true, /*=>*/ OP::OP_CALL__WRITE,
504: /*or */OP::OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
505: }
1.66 paf 506: };
1.177 paf 507: call_value: '^' {
1.180 paf 508: PC.in_call_value=true;
1.177 paf 509: }
510: call_name {
1.180 paf 511: PC.in_call_value=false;
1.177 paf 512: }
1.154 parser 513: store_params EON { /* ^field.$method{vasya} */
1.238 misha 514: #ifdef OPTIMIZE_BYTECODE_CUT_REM_OPERATOR
1.242 misha 515: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.238 misha 516: const String* operator_name=LA2S(*$3, 0, OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR);
1.242 misha 517: #else
518: const String* operator_name=LA2S(*$3, 1);
519: #endif
1.238 misha 520: if(operator_name && *operator_name == REM_OPERATOR_NAME){
521: $$=N();
522: } else
523: #endif
524: {
525: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 526:
1.238 misha 527: YYSTYPE params_code=$5;
528: if(params_code->count()==3) { // probably [] case. [OP::OP_VALUE+origin+Void]
529: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
530: if(value->is_void()) // value is VVoid?
531: params_code=0; // ^zzz[] case. don't append lone empty param.
532: }
533: /* stack: context, method_junction */
534: OA(*$$, OP::OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
535: }
1.1 paf 536: };
537:
1.43 paf 538: call_name: name_without_curly_rdive;
1.38 paf 539:
1.206 paf 540: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2) };
1.69 paf 541: store_param:
542: store_square_param
543: | store_round_param
544: | store_curly_param
1.31 paf 545: ;
1.210 paf 546: store_square_param: '[' {
1.211 paf 547: // allow ^call[ letters here any time ]
1.210 paf 548: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
549: } store_code_param_parts {
1.213 paf 550: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.210 paf 551: } ']' {$$=$3};
1.69 paf 552: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 553: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 554: store_code_param_parts:
555: store_code_param_part
1.206 paf 556: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 557: ;
558: store_expr_param_parts:
559: store_expr_param_part
1.206 paf 560: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 561: ;
1.94 paf 562: store_curly_param_parts:
563: store_curly_param_part
1.206 paf 564: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3) }
1.94 paf 565: ;
1.120 paf 566: store_code_param_part: code_param_value {
1.32 paf 567: $$=$1;
1.120 paf 568: };
1.214 paf 569: store_expr_param_part: expr_value {
570: YYSTYPE expr_code=$1;
1.215 paf 571: if(expr_code->count()==3
1.234 misha 572: && (*expr_code)[0].code==OP::OP_VALUE) { // optimizing (double/bool/incidently 'string' too) case. [OP::OP_VALUE+origin+Double]. no evaluating
1.214 paf 573: $$=expr_code;
574: } else {
1.238 misha 575: YYSTYPE code=N();
1.229 misha 576: O(*code, OP::OP_PREPARE_TO_EXPRESSION);
1.214 paf 577: P(*code, *expr_code);
1.229 misha 578: O(*code, OP::OP_WRITE_EXPR_RESULT);
1.214 paf 579: $$=N();
1.229 misha 580: OA(*$$, OP::OP_EXPR_CODE__STORE_PARAM, code);
1.214 paf 581: }
1.69 paf 582: };
1.94 paf 583: store_curly_param_part: maybe_codes {
1.206 paf 584: $$=N();
1.229 misha 585: OA(*$$, OP::OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 586: };
1.120 paf 587: code_param_value:
1.157 parser 588: void_value /* optimized [;...] case */
1.120 paf 589: | STRING /* optimized [STRING] case */
590: | constructor_code_value /* [something complex] */
591: ;
1.1 paf 592:
593: /* name */
594:
1.206 paf 595: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 596:
1.206 paf 597: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 598: name_step: name_advance1 '.';
599: name_advance1: name_expr_value {
1.177 paf 600: // we know that name_advance1 not called from ^xxx context
601: // so we'll not check for operator call possibility as we do in name_advance2
602:
1.1 paf 603: /* stack: context */
604: $$=$1; /* stack: context,name */
1.229 misha 605: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 606: };
607: name_advance2: name_expr_value {
608: /* stack: context */
609: $$=$1; /* stack: context,name */
1.229 misha 610: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 611: }
1.4 paf 612: | STRING BOGUS
1.1 paf 613: ;
614: name_expr_value:
1.4 paf 615: STRING /* subname_is_const */
1.1 paf 616: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 617: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 618: | name_square_code_value /* [codes] */
1.1 paf 619: ;
620: name_expr_subvar_value: '$' subvar_ref_name_rdive {
621: $$=$2;
1.229 misha 622: O(*$$, OP::OP_GET_ELEMENT);
1.1 paf 623: };
1.4 paf 624: name_expr_with_subvar_value: STRING subvar_get_writes {
1.238 misha 625: YYSTYPE code;
1.183 paf 626: {
1.206 paf 627: change_string_literal_to_write_string_literal(*(code=$1));
628: P(*code, *$2);
1.183 paf 629: }
1.206 paf 630: $$=N();
1.229 misha 631: OA(*$$, OP::OP_STRING_POOL, code);
1.1 paf 632: };
1.212 paf 633: name_square_code_value: '[' {
634: // allow $result_or_other_variable[ letters here any time ]
635: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
636: } codes {
1.213 paf 637: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.212 paf 638: } ']' {
1.206 paf 639: $$=N();
1.229 misha 640: OA(*$$, OP::OP_OBJECT_POOL, $3); /* stack: empty write context */
1.183 paf 641: /* some code that writes to that context */
642: /* context=pop; stack: context.value() */
1.160 parser 643: };
1.154 parser 644: subvar_ref_name_rdive: STRING {
1.206 paf 645: $$=N();
1.229 misha 646: O(*$$, OP::OP_WITH_READ);
1.206 paf 647: P(*$$, *$1);
1.1 paf 648: };
1.206 paf 649: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 650: subvar__get_write: '$' subvar_ref_name_rdive {
651: $$=$2;
1.229 misha 652: O(*$$, OP::OP_GET_ELEMENT__WRITE);
1.42 paf 653: };
654:
1.154 parser 655: class_prefix:
656: class_static_prefix
657: | class_constructor_prefix
658: ;
1.155 parser 659: class_static_prefix: STRING ':' {
660: $$=$1; // stack: class name string
1.206 paf 661: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
662: if(VStateless_class* base=PC.cclass->base_class()) {
663: change_string_literal_value(*$$, base->name());
1.189 paf 664: } else {
665: strcpy(PC.error, "no base class declared");
666: YYERROR;
667: }
668: }
1.233 misha 669: #ifdef OPTIMIZE_BYTECODE_GET_CLASS
1.238 misha 670: // optimized OP_VALUE+origin+string+OP_GET_CLASS => OP_VALUE__GET_CLASS+origin+string
1.239 misha 671: maybe_change_first_opcode(*$$, OP::OP_VALUE, OP::OP_VALUE__GET_CLASS, true/*assert if top opcode != OP_VALUE*/)
1.233 misha 672: #else
1.229 misha 673: O(*$$, OP::OP_GET_CLASS);
1.233 misha 674: #endif
1.155 parser 675: };
676: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 677: $$=$1;
1.180 paf 678: if(!PC.in_call_value) {
1.154 parser 679: strcpy(PC.error, ":: not allowed here");
680: YYERROR;
681: }
1.229 misha 682: O(*$$, OP::OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 683: };
684:
1.53 paf 685:
1.56 paf 686: /* expr */
1.53 paf 687:
1.214 paf 688: expr_value: expr;
1.56 paf 689: expr:
1.214 paf 690: double_or_STRING
1.216 paf 691: | true_value
692: | false_value
1.64 paf 693: | get_value
1.66 paf 694: | call_value
1.216 paf 695: | '"' string_inside_quotes_value '"' { $$ = $2 }
696: | '\'' string_inside_quotes_value '\'' { $$ = $2 }
1.60 paf 697: | '(' expr ')' { $$ = $2; }
698: /* stack: operand // stack: @operand */
1.229 misha 699: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP::OP_NEG) }
1.202 paf 700: | '+' expr %prec NUNARY { $$=$2 }
1.229 misha 701: | '~' expr { $$=$2; O(*$$, OP::OP_INV) }
702: | '!' expr { $$=$2; O(*$$, OP::OP_NOT) }
703: | "def" expr { $$=$2; O(*$$, OP::OP_DEF) }
704: | "in" expr { $$=$2; O(*$$, OP::OP_IN) }
705: | "-f" expr { $$=$2; O(*$$, OP::OP_FEXISTS) }
706: | "-d" expr { $$=$2; O(*$$, OP::OP_DEXISTS) }
1.60 paf 707: /* stack: a,b // stack: a@b */
1.229 misha 708: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_SUB) }
709: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_ADD) }
710: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MUL) }
711: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_DIV) }
712: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MOD) }
713: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_INTDIV) }
714: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SL) }
715: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SR) }
716: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_AND) }
717: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_OR) }
718: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_XOR) }
719: | expr "&&" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_AND) }
720: | expr "||" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_OR) }
721: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_LOG_XOR) }
722: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LT) }
723: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GT) }
724: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LE) }
725: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GE) }
726: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_EQ) }
727: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_NE) }
728: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LT) }
729: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GT) }
730: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LE) }
731: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GE) }
732: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_EQ) }
733: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_NE) }
734: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_IS) }
1.56 paf 735: ;
1.214 paf 736:
737: double_or_STRING: STRING {
1.238 misha 738: // optimized OP_STRING => OP_VALUE for doubles
1.214 paf 739: maybe_change_string_literal_to_double_literal(*($$=$1));
740: };
1.55 paf 741:
1.65 paf 742: string_inside_quotes_value: maybe_codes {
1.238 misha 743: #ifdef OPTIMIZE_BYTECODE_STRING_POOL
744: // it brakes ^if(" 09 "){...}
745: YYSTYPE code=$1;
746: $$=N();
1.239 misha 747: if(code->count()==3 && maybe_change_first_opcode(*code, OP::OP_STRING__WRITE, OP::OP_VALUE)){
1.238 misha 748: // optimized OP_STRING__WRITE+origin+value => OP_VALUE+origin+value without starting OP_STRING_POOL
749: P(*$$, *code);
750: } else {
751: OA(*$$, OP::OP_STRING_POOL, code); /* stack: empty write context */
752: }
753: #else
1.206 paf 754: $$=N();
1.229 misha 755: OA(*$$, OP::OP_STRING_POOL, $1); /* stack: empty write context */
1.238 misha 756: #endif
1.183 paf 757: /* some code that writes to that context */
758: /* context=pop; stack: context.get_string() */
1.53 paf 759: };
1.1 paf 760:
1.27 paf 761: /* basics */
1.1 paf 762:
1.81 paf 763: write_string: STRING {
1.238 misha 764: // optimized OP_STRING+OP_WRITE_VALUE => OP_STRING__WRITE
1.209 paf 765: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 766: };
767:
1.216 paf 768: void_value: /* empty */ { $$=VL(/*we know that we will not change it*/const_cast<VVoid*>(&vvoid), 0, 0, 0) }
769: true_value: "true" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vtrue), 0, 0, 0) }
770: false_value: "false" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vfalse), 0, 0, 0) }
771:
1.206 paf 772: empty: /* empty */ { $$=N() };
1.1 paf 773:
774: %%
1.105 paf 775: #endif
1.1 paf 776:
777: /*
778: 000$111(2222)00
779: 000$111{3333}00
1.9 paf 780: $,^: push,=0
1.1 paf 781: 1:( { break=pop
782: 2:( ) pop
783: 3:{ } pop
784:
785: 000^111(2222)4444{33333}4000
1.9 paf 786: $,^: push,=0
1.1 paf 787: 1:( { break=pop
788: 2:( )=4
789: 3:{ }=4
790: 4:[^({]=pop
791: */
792:
1.206 paf 793: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
794: pc.source--;
795: if(pc.pos.col==0) {
796: --pc.pos.line; pc.pos.col=last_line_end_col;
797: } else
798: --pc.pos.col;
799:
800: }
801: static int yylex(YYSTYPE *lvalp, void *apc) {
802: register Parse_control& pc=*static_cast<Parse_control*>(apc);
803:
804: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 805: #define RC {result=c; goto break2; }
1.1 paf 806:
1.206 paf 807: register int c;
808: int result;
1.1 paf 809:
1.206 paf 810: if(pc.pending_state) {
811: result=pc.pending_state;
812: pc.pending_state=0;
1.1 paf 813: return result;
814: }
815:
1.206 paf 816: const char *begin=pc.source;
817: Pos begin_pos=pc.pos;
1.91 paf 818: const char *end;
1.67 paf 819: int skip_analized=0;
1.50 paf 820: while(true) {
1.206 paf 821: c=*(end=(pc.source++));
822: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 823:
1.208 paf 824: if(c=='\n')
1.206 paf 825: pc.pos_next_line();
1.208 paf 826: else
1.206 paf 827: pc.pos_next_c(c);
1.208 paf 828: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 829:
1.208 paf 830: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 831: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 832: // @SPECIAL
833: // ...
834: // @<here =
1.206 paf 835: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 836: } // continuing checks
1.206 paf 837: if(pc.ls==LS_USER) {
838: push_LS(pc, LS_DEF_NAME);
1.171 parser 839: RC;
1.175 paf 840: } else // @ in first column inside some code [when could that be?]
1.171 parser 841: result=BAD_METHOD_DECL_START;
842: goto break2;
1.209 paf 843: }
844: if(c=='^') {
1.206 paf 845: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 846: // handle after-method situation
1.206 paf 847: pop_LS(pc);
1.203 paf 848: result=EON;
849: skip_analized=-1; // return to punctuation afterwards to assure it's literality
850: goto break2;
851: }
1.206 paf 852: switch(pc.ls) {
1.169 parser 853: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
854: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
855: case LS_VAR_NAME_SIMPLE_WITH_COLON:
856: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
857: case LS_VAR_NAME_CURLY:
858: case LS_METHOD_NAME:
1.194 paf 859: case LS_USER_COMMENT:
1.169 parser 860: case LS_DEF_COMMENT:
861: // no literals in names, please
862: break;
863: default:
1.206 paf 864: switch(*pc.source) {
1.165 parser 865: // ^escaping some punctuators
1.228 misha 866: case '^': case '$': case ';': case '@':
1.126 paf 867: case '(': case ')':
1.48 paf 868: case '[': case ']':
869: case '{': case '}':
1.172 parser 870: case '"': case ':':
1.40 paf 871: if(end!=begin) {
1.206 paf 872: if(!pc.string_start)
873: pc.string_start=begin_pos;
1.40 paf 874: // append piece till ^
1.206 paf 875: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 876: }
1.63 paf 877: // reset piece 'begin' position & line
1.206 paf 878: begin=pc.source; // ->punctuation
879: begin_pos=pc.pos;
1.203 paf 880: // skip over _ after ^
1.206 paf 881: pc.source++; pc.pos.col++;
1.203 paf 882: // skip analysis = forced literal
883: continue;
1.114 paf 884:
885: // converting ^#HH into char(hex(HH))
886: case '#':
887: if(end!=begin) {
1.206 paf 888: if(!pc.string_start)
889: pc.string_start=begin_pos;
1.114 paf 890: // append piece till ^
1.206 paf 891: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 892: }
893: // #HH ?
1.228 misha 894: if(pc.source[1] && isxdigit(pc.source[1]) && pc.source[2] && isxdigit(pc.source[2])) {
1.218 paf 895: char c=(char)(
1.206 paf 896: hex_value[(unsigned char)pc.source[1]]*0x10+
1.218 paf 897: hex_value[(unsigned char)pc.source[2]]);
1.206 paf 898: if(c==0) {
1.114 paf 899: result=BAD_HEX_LITERAL;
900: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
901: }
902: // append char(hex(HH))
1.206 paf 903: pc.string.append(c);
1.114 paf 904: // skip over ^#HH
1.206 paf 905: pc.source+=3;
906: pc.pos.col+=3;
1.114 paf 907: // reset piece 'begin' position & line
1.206 paf 908: begin=pc.source; // ->after ^#HH
909: begin_pos=pc.pos;
1.203 paf 910: // skip analysis = forced literal
1.114 paf 911: continue;
912: }
1.228 misha 913: // just escaped char
914: // reset piece 'begin' position & line
915: begin=pc.source;
916: begin_pos=pc.pos;
917: // skip over _ after ^
918: pc.source++; pc.pos.col++;
919: // skip analysis = forced literal
920: continue;
1.1 paf 921: }
1.169 parser 922: break;
1.203 paf 923: }
1.169 parser 924: }
1.113 paf 925: // #comment start skipping
1.206 paf 926: if(c=='#' && pc.pos.col==1) {
1.112 paf 927: if(end!=begin) {
1.206 paf 928: if(!pc.string_start)
929: pc.string_start=begin_pos;
1.112 paf 930: // append piece till #
1.206 paf 931: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 932: }
933: // fall into COMMENT lexical state [wait for \n]
1.206 paf 934: push_LS(pc, LS_USER_COMMENT);
1.175 paf 935: continue;
1.112 paf 936: }
1.206 paf 937: switch(pc.ls) {
1.10 paf 938:
939: // USER'S = NOT OURS
1.1 paf 940: case LS_USER:
1.206 paf 941: case LS_NAME_SQUARE_PART: // name.[here].xxx
942: if(pc.trim_bof)
1.153 parser 943: switch(c) {
944: case '\n': case ' ': case '\t':
1.206 paf 945: begin=pc.source;
946: begin_pos=pc.pos;
1.152 parser 947: continue; // skip it
1.153 parser 948: default:
1.206 paf 949: pc.trim_bof=false;
1.152 parser 950: }
1.48 paf 951: switch(c) {
952: case '$':
1.206 paf 953: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 954: RC;
955: case '^':
1.206 paf 956: push_LS(pc, LS_METHOD_NAME);
1.48 paf 957: RC;
1.166 parser 958: case ']':
1.206 paf 959: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 960: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 961: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 962: RC;
963: }
1.160 parser 964: break;
1.166 parser 965: case '[': // $name.[co<[>de]
1.206 paf 966: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 967: lexical_brackets_nestage++;
1.161 parser 968: break;
1.112 paf 969: }
1.209 paf 970: if(pc.explicit_result && c)
971: switch(c) {
972: case '\n': case ' ': case '\t':
973: begin=pc.source;
974: begin_pos=pc.pos;
975: continue; // skip it
976: default:
977: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
978: goto break2;
979: }
1.112 paf 980: break;
981:
982: // #COMMENT
1.194 paf 983: case LS_USER_COMMENT:
1.112 paf 984: if(c=='\n') {
985: // skip comment
1.206 paf 986: begin=pc.source;
987: begin_pos=pc.pos;
1.112 paf 988:
1.206 paf 989: pop_LS(pc);
1.112 paf 990: continue;
1.1 paf 991: }
1.48 paf 992: break;
993:
994: // STRING IN EXPRESSION
1.145 parser 995: case LS_EXPRESSION_STRING_QUOTED:
996: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 997: switch(c) {
998: case '"':
1.145 parser 999: case '\'':
1000: if(
1.206 paf 1001: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
1002: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
1003: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 1004: RC;
1005: }
1006: break;
1.48 paf 1007: case '$':
1.206 paf 1008: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1009: RC;
1010: case '^':
1.206 paf 1011: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1012: RC;
1.10 paf 1013: }
1014: break;
1015:
1016: // METHOD DEFINITION
1017: case LS_DEF_NAME:
1.48 paf 1018: switch(c) {
1019: case '[':
1.206 paf 1020: pc.ls=LS_DEF_PARAMS;
1.48 paf 1021: RC;
1022: case '\n':
1.206 paf 1023: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 1024: RC;
1.10 paf 1025: }
1026: break;
1.48 paf 1027:
1.10 paf 1028: case LS_DEF_PARAMS:
1.48 paf 1029: switch(c) {
1.192 paf 1030: case '$': // common error
1.193 paf 1031: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
1032: goto break2;
1.48 paf 1033: case ';':
1034: RC;
1035: case ']':
1.206 paf 1036: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 1037: RC;
1.49 paf 1038: case '\n': // wrong. bailing out
1.206 paf 1039: pop_LS(pc);
1.48 paf 1040: RC;
1.10 paf 1041: }
1042: break;
1.48 paf 1043:
1.10 paf 1044: case LS_DEF_LOCALS:
1.48 paf 1045: switch(c) {
1046: case '[':
1047: case ';':
1048: RC;
1049: case ']':
1.206 paf 1050: pc.ls=LS_DEF_COMMENT;
1.48 paf 1051: RC;
1052: case '\n': // wrong. bailing out
1.206 paf 1053: pop_LS(pc);
1.48 paf 1054: RC;
1.10 paf 1055: }
1056: break;
1.48 paf 1057:
1.10 paf 1058: case LS_DEF_COMMENT:
1059: if(c=='\n') {
1.206 paf 1060: pop_LS(pc);
1.48 paf 1061: RC;
1.37 paf 1062: }
1063: break;
1064:
1.48 paf 1065: case LS_DEF_SPECIAL_BODY:
1.175 paf 1066: if(c=='\n')
1.48 paf 1067: RC;
1068: break;
1069:
1070: // (EXPRESSION)
1.69 paf 1071: case LS_VAR_ROUND:
1072: case LS_METHOD_ROUND:
1.48 paf 1073: switch(c) {
1074: case ')':
1075: if(--lexical_brackets_nestage==0)
1.206 paf 1076: if(pc.ls==LS_METHOD_ROUND) // method round param ended
1077: pc.ls=LS_METHOD_AFTER; // look for method end
1078: else // pc.ls==LS_VAR_ROUND // variable constructor ended
1079: pop_LS(pc); // return to normal life
1.48 paf 1080: RC;
1.194 paf 1081: case '#': // comment start skipping
1082: if(end!=begin) {
1.206 paf 1083: if(!pc.string_start)
1084: pc.string_start=begin_pos;
1.194 paf 1085: // append piece till #
1.206 paf 1086: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 1087: }
1088: // fall into COMMENT lexical state [wait for \n]
1.206 paf 1089: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 1090: lexical_brackets_nestage=1;
1091: continue;
1.48 paf 1092: case '$':
1.206 paf 1093: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 1094: RC;
1095: case '^':
1.206 paf 1096: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1097: RC;
1098: case '(':
1099: lexical_brackets_nestage++;
1100: RC;
1.67 paf 1101: case '-':
1.206 paf 1102: switch(*pc.source) {
1.127 paf 1103: case 'f': // -f
1.67 paf 1104: skip_analized=1;
1105: result=FEXISTS;
1.127 paf 1106: goto break2;
1107: case 'd': // -d
1108: skip_analized=1;
1109: result=DEXISTS;
1110: goto break2;
1.191 paf 1111: default: // minus
1.67 paf 1112: result=c;
1.127 paf 1113: goto break2;
1114: }
1.67 paf 1115: goto break2;
1.173 paf 1116: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 1117: case '~':
1.48 paf 1118: case ';':
1119: RC;
1.193 paf 1120: case '&': case '|':
1.206 paf 1121: if(*pc.source==c) { // && ||
1.193 paf 1122: result=c=='&'?LAND:LOR;
1.67 paf 1123: skip_analized=1;
1.58 paf 1124: } else
1125: result=c;
1126: goto break2;
1.193 paf 1127: case '!':
1.206 paf 1128: switch(pc.source[0]) {
1.193 paf 1129: case '|': // !| !||
1130: skip_analized=1;
1.206 paf 1131: if(pc.source[1]=='|') {
1.193 paf 1132: skip_analized++;
1133: result=LXOR;
1134: } else
1135: result=NXOR;
1136: goto break2;
1137: case '=': // !=
1138: skip_analized=1;
1139: result=NNE;
1140: goto break2;
1141: }
1142: RC;
1.195 paf 1143:
1144: case '<': // <<, <=, <
1.206 paf 1145: switch(*pc.source) {
1.195 paf 1146: case '<': // <[<]
1147: skip_analized=1; result=NSL; break;
1148: case '=': // <[=]
1149: skip_analized=1; result=NLE; break;
1150: default: // <[]
1151: result=c; break;
1152: }
1153: goto break2;
1154: case '>': // >>, >=, >
1.206 paf 1155: switch(*pc.source) {
1.195 paf 1156: case '>': // >[>]
1157: skip_analized=1; result=NSR; break;
1158: case '=': // >[=]
1159: skip_analized=1; result=NGE; break;
1160: default: // >[]
1161: result=c; break;
1162: }
1163: goto break2;
1164: case '=': // ==
1.206 paf 1165: switch(*pc.source) {
1.195 paf 1166: case '=': // =[=]
1167: skip_analized=1; result=NEQ; break;
1168: default: // =[]
1169: result=c; break; // not used now
1170: }
1.58 paf 1171: goto break2;
1.195 paf 1172:
1.48 paf 1173: case '"':
1.206 paf 1174: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1175: RC;
1176: case '\'':
1.206 paf 1177: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1178: RC;
1.50 paf 1179: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1180: if(end==begin) // right after whitespace
1.206 paf 1181: if(isspace(pc.source[1])) {
1182: switch(*pc.source) {
1.117 paf 1183: // case '?': // ok [and bad cases, yacc would bark at them]
1184: case 't': // lt gt [et nt]
1185: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1186: skip_analized=1;
1187: goto break2;
1188: case 'e': // le ge ne [ee]
1189: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1190: skip_analized=1;
1191: goto break2;
1192: case 'q': // eq [lq gq nq]
1193: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1194: skip_analized=1;
1195: goto break2;
1196: }
1.67 paf 1197: }
1198: break;
1199: case 'i':
1200: if(end==begin) // right after whitespace
1.206 paf 1201: if(isspace(pc.source[1])) {
1202: switch(pc.source[0]) {
1.117 paf 1203: case 'n': // in
1.95 paf 1204: skip_analized=1;
1205: result=IN;
1206: goto break2;
1.117 paf 1207: case 's': // is
1.95 paf 1208: skip_analized=1;
1209: result=IS;
1210: goto break2;
1211: }
1.67 paf 1212: }
1213: break;
1214: case 'd':
1215: if(end==begin) // right after whitespace
1.206 paf 1216: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.225 misha 1217: switch(pc.source[2]){
1218: case ' ': case '\t': case '\n': case '"': case '\'': case '^': case '$': // non-quoted string without whitespace after 'def' is not allowed
1219: skip_analized=2;
1220: result=DEF;
1221: goto break2;
1222: }
1223: // error: incorrect char after 'def'
1.50 paf 1224: }
1.48 paf 1225: break;
1.216 paf 1226: case 't':
1227: if(end==begin) // right after whitespace
1.225 misha 1228: if(pc.source[0]=='r' && pc.source[1]=='u' && pc.source[2]=='e') { // true
1.216 paf 1229: skip_analized=3;
1230: result=LITERAL_TRUE;
1231: goto break2;
1232: }
1233: break;
1234: case 'f':
1235: if(end==begin) // right after whitespace
1.225 misha 1236: if(pc.source[0]=='a' && pc.source[1]=='l' && pc.source[2]=='s' && pc.source[3]=='e') { // false
1.216 paf 1237: skip_analized=4;
1238: result=LITERAL_FALSE;
1239: goto break2;
1240: }
1241: break;
1.48 paf 1242: case ' ': case '\t': case '\n':
1.63 paf 1243: if(end!=begin) { // there were a string after previous operator?
1244: result=0; // return that string
1245: goto break2;
1.48 paf 1246: }
1.63 paf 1247: // that's a leading|traling space or after-operator-space
1248: // ignoring it
1249: // reset piece 'begin' position & line
1.206 paf 1250: begin=pc.source; // after whitespace char
1251: begin_pos=pc.pos;
1.48 paf 1252: continue;
1.1 paf 1253: }
1254: break;
1.194 paf 1255: case LS_EXPRESSION_COMMENT:
1256: if(c=='(')
1257: lexical_brackets_nestage++;
1258:
1.206 paf 1259: switch(*pc.source) {
1.194 paf 1260: case '\n': case ')':
1.206 paf 1261: if(*pc.source==')')
1.194 paf 1262: if(--lexical_brackets_nestage!=0)
1263: continue;
1264:
1265: // skip comment
1.206 paf 1266: begin=pc.source;
1267: begin_pos=pc.pos;
1.194 paf 1268:
1.206 paf 1269: pop_LS(pc);
1.194 paf 1270: continue;
1271: }
1272: break;
1.1 paf 1273:
1.10 paf 1274: // VARIABLE GET/PUT/WITH
1.166 parser 1275: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1276: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1277: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1278: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1279: if(
1.206 paf 1280: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1281: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1282: // name in expr ends also before
1.48 paf 1283: switch(c) {
1.181 paf 1284: // expression minus
1.92 paf 1285: case '-':
1.181 paf 1286: // expression integer division
1287: case '\\':
1.206 paf 1288: pop_LS(pc);
1289: pc.ungetc();
1.48 paf 1290: result=EON;
1291: goto break2;
1292: }
1293: }
1.166 parser 1294: if(
1.206 paf 1295: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1296: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1297: // name already has ':', stop before next
1298: switch(c) {
1299: case ':':
1.206 paf 1300: pop_LS(pc);
1301: pc.ungetc();
1.142 parser 1302: result=EON;
1303: goto break2;
1304: }
1305: }
1.48 paf 1306: switch(c) {
1307: case 0:
1308: case ' ': case '\t': case '\n':
1309: case ';':
1.126 paf 1310: case ']': case '}': case ')':
1311: case '"': case '\'':
1.139 parser 1312: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1313: case '+': case '*': case '/': case '%':
1314: case '&': case '|':
1315: case '=': case '!':
1.99 paf 1316: // common delimiters
1.190 paf 1317: case ',': case '?': case '#':
1.220 paf 1318: // mysql column separators
1319: case '`':
1.139 parser 1320: // before call
1321: case '^':
1.206 paf 1322: pop_LS(pc);
1323: pc.ungetc();
1.13 paf 1324: result=EON;
1.1 paf 1325: goto break2;
1.48 paf 1326: case '[':
1.162 parser 1327: // $name.<[>code]
1.206 paf 1328: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1329: end[-1]=='$'/*was start of get*/ ||
1330: end[-1]==':'/*was class name delim */ ||
1331: end[-1]=='.'/*was name delim */
1.162 parser 1332: )) {
1.206 paf 1333: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1334: lexical_brackets_nestage=1;
1335: RC;
1336: }
1.206 paf 1337: pc.ls=LS_VAR_SQUARE;
1.1 paf 1338: lexical_brackets_nestage=1;
1.48 paf 1339: RC;
1340: case '{':
1341: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1342: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1343: } else {
1.206 paf 1344: pc.ls=LS_VAR_CURLY;
1.48 paf 1345: lexical_brackets_nestage=1;
1346: }
1.69 paf 1347:
1.48 paf 1348: RC;
1349: case '(':
1.206 paf 1350: pc.ls=LS_VAR_ROUND;
1.1 paf 1351: lexical_brackets_nestage=1;
1.48 paf 1352: RC;
1353: case '.': // name part delim
1354: case '$': // name part subvar
1.160 parser 1355: case ':': // class<:>name
1.166 parser 1356: // go to _WITHOUT_COLON state variant...
1.206 paf 1357: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1358: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1359: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1360: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1361: // ...stop before next ':'
1.48 paf 1362: RC;
1.1 paf 1363: }
1364: break;
1.48 paf 1365:
1.1 paf 1366: case LS_VAR_NAME_CURLY:
1.48 paf 1367: switch(c) {
1.162 parser 1368: case '[':
1.166 parser 1369: // ${name.<[>code]}
1.206 paf 1370: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1371: lexical_brackets_nestage=1;
1372: RC;
1.48 paf 1373: case '}': // ${name} finished, restoring LS
1.206 paf 1374: pop_LS(pc);
1.48 paf 1375: RC;
1376: case '.': // name part delim
1377: case '$': // name part subvar
1378: case ':': // ':name' or 'class:name'
1379: RC;
1.1 paf 1380: }
1381: break;
1.48 paf 1382:
1383: case LS_VAR_SQUARE:
1384: switch(c) {
1385: case '$':
1.206 paf 1386: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1387: RC;
1388: case '^':
1.206 paf 1389: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1390: RC;
1391: case ']':
1.1 paf 1392: if(--lexical_brackets_nestage==0) {
1.206 paf 1393: pop_LS(pc);
1.48 paf 1394: RC;
1.1 paf 1395: }
1.48 paf 1396: break;
1397: case ';': // operator_or_fmt;value delim
1398: RC;
1399: case '[':
1400: lexical_brackets_nestage++;
1401: break;
1.1 paf 1402: }
1403: break;
1.48 paf 1404:
1.1 paf 1405: case LS_VAR_CURLY:
1.48 paf 1406: switch(c) {
1407: case '$':
1.206 paf 1408: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1409: RC;
1410: case '^':
1.206 paf 1411: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1412: RC;
1413: case '}':
1.1 paf 1414: if(--lexical_brackets_nestage==0) {
1.206 paf 1415: pop_LS(pc);
1.48 paf 1416: RC;
1.1 paf 1417: }
1.48 paf 1418: break;
1419: case '{':
1.1 paf 1420: lexical_brackets_nestage++;
1.48 paf 1421: break;
1422: }
1.1 paf 1423: break;
1424:
1.10 paf 1425: // METHOD CALL
1.1 paf 1426: case LS_METHOD_NAME:
1.48 paf 1427: switch(c) {
1428: case '[':
1.166 parser 1429: // ^name.<[>code].xxx
1.206 paf 1430: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1431: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1432: end[-1]==':'/*was class name delim */ ||
1433: end[-1]=='.'/*was name delim */
1.162 parser 1434: )) {
1.206 paf 1435: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1436: lexical_brackets_nestage=1;
1437: RC;
1438: }
1.206 paf 1439: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1440: lexical_brackets_nestage=1;
1.48 paf 1441: RC;
1442: case '{':
1.206 paf 1443: pc.ls=LS_METHOD_CURLY;
1.1 paf 1444: lexical_brackets_nestage=1;
1.48 paf 1445: RC;
1.69 paf 1446: case '(':
1.206 paf 1447: pc.ls=LS_METHOD_ROUND;
1.69 paf 1448: lexical_brackets_nestage=1;
1449: RC;
1.48 paf 1450: case '.': // name part delim
1451: case '$': // name part subvar
1452: case ':': // ':name' or 'class:name'
1.170 parser 1453: case '^': // ^abc^xxx wrong. bailing out
1454: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1455: case ' ': // ^if ( wrong. bailing out
1.48 paf 1456: RC;
1.1 paf 1457: }
1458: break;
1.48 paf 1459:
1460: case LS_METHOD_SQUARE:
1461: switch(c) {
1462: case '$':
1.206 paf 1463: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1464: RC;
1465: case '^':
1.206 paf 1466: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1467: RC;
1468: case ';': // param delim
1469: RC;
1470: case ']':
1.1 paf 1471: if(--lexical_brackets_nestage==0) {
1.206 paf 1472: pc.ls=LS_METHOD_AFTER;
1.48 paf 1473: RC;
1.1 paf 1474: }
1.48 paf 1475: break;
1476: case '[':
1.1 paf 1477: lexical_brackets_nestage++;
1.48 paf 1478: break;
1479: }
1.1 paf 1480: break;
1.48 paf 1481:
1.1 paf 1482: case LS_METHOD_CURLY:
1.48 paf 1483: switch(c) {
1484: case '$':
1.206 paf 1485: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1486: RC;
1487: case '^':
1.206 paf 1488: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1489: RC;
1490: case ';': // param delim
1.48 paf 1491: RC;
1492: case '}':
1.1 paf 1493: if(--lexical_brackets_nestage==0) {
1.206 paf 1494: pc.ls=LS_METHOD_AFTER;
1.48 paf 1495: RC;
1.1 paf 1496: }
1.48 paf 1497: break;
1498: case '{':
1.1 paf 1499: lexical_brackets_nestage++;
1.48 paf 1500: break;
1501: }
1.209 paf 1502: if(pc.explicit_result && c)
1503: switch(c) {
1504: case '\n': case ' ': case '\t':
1505: begin=pc.source;
1506: begin_pos=pc.pos;
1507: continue; // skip it
1508: default:
1509: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
1510: goto break2;
1511: }
1.1 paf 1512: break;
1.48 paf 1513:
1.1 paf 1514: case LS_METHOD_AFTER:
1.69 paf 1515: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1516: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1517: lexical_brackets_nestage=1;
1.48 paf 1518: RC;
1.1 paf 1519: }
1.69 paf 1520: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1521: pc.ls=LS_METHOD_CURLY;
1.69 paf 1522: lexical_brackets_nestage=1;
1523: RC;
1524: }
1525: if(c=='(') {/* ]( }( )( */
1.206 paf 1526: pc.ls=LS_METHOD_ROUND;
1.1 paf 1527: lexical_brackets_nestage=1;
1.48 paf 1528: RC;
1.1 paf 1529: }
1.206 paf 1530: pop_LS(pc);
1531: pc.ungetc();
1.13 paf 1532: result=EON;
1.1 paf 1533: goto break2;
1534: }
1.9 paf 1535: if(c==0) {
1.1 paf 1536: result=-1;
1537: break;
1538: }
1539: }
1540:
1541: break2:
1.59 paf 1542: if(end!=begin) { // there is last piece?
1543: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1544: // strip last \n
1.10 paf 1545: end--;
1.137 parser 1546: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1547: end--;
1.59 paf 1548: }
1.206 paf 1549: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1550: if(!pc.string_start)
1551: pc.string_start=begin_pos;
1.59 paf 1552: // append it
1.206 paf 1553: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1554: }
1.59 paf 1555: }
1.206 paf 1556: if(!pc.string.is_empty()) { // something accumulated?
1557: // create STRING value: array of OP_VALUE+origin+vstring
1558: *lvalp=VL(
1559: new VString(*new String(pc.string, String::L_CLEAN)),
1560: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1561: // new pieces storage
1.206 paf 1562: pc.string.clear();
1563: pc.string_start.clear();
1.58 paf 1564: // make current result be pending for next call, return STRING for now
1.206 paf 1565: pc.pending_state=result; result=STRING;
1.58 paf 1566: }
1.67 paf 1567: if(skip_analized) {
1.206 paf 1568: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1569: }
1.58 paf 1570: return result;
1.1 paf 1571: }
1572:
1.206 paf 1573: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1574: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1575: return 1;
1.110 paf 1576: }
1.1 paf 1577:
1.110 paf 1578: static void yyprint(FILE *file, int type, YYSTYPE value) {
1579: if(type==STRING)
1.206 paf 1580: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1581: }
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