Annotation of parser3/src/main/compile.y, revision 1.241
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:
1.241 ! misha 8: $Id: compile.y,v 1.240 2009-05-20 09:08:53 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: $$=N();
321: YYSTYPE code=$1;
1.235 misha 322: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.239 misha 323: if(!maybe_change_first_opcode(*code, OP::OP_VALUE__GET_ELEMENT, /*=>*/OP::OP_VALUE__GET_ELEMENT__WRITE))
1.238 misha 324: #endif
325: {
326: size_t count=code->count();
1.239 misha 327: size_t len=6;
328:
329: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
330: if(
331: count==len
332: && maybe_change_first_opcode(*code, OP::OP_GET_OBJECT_ELEMENT, OP::OP_GET_ELEMENT, /*=>*/OP::OP_GET_OBJECT_ELEMENT__WRITE)
333: ){
334: //P(*$$, *code, 0/*offset*/, count-1/*limit*/); // someday skip last OP_GET_ELEMENT
335: //break;
336: } else
337: #endif
338:
339: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
340: if(
341: count==len
342: && maybe_change_first_opcode(*code, OP::OP_GET_OBJECT_VAR_ELEMENT, OP::OP_GET_ELEMENT, /*=>*/OP::OP_GET_OBJECT_VAR_ELEMENT__WRITE)
1.238 misha 343: ){
344: //P(*$$, *code, 0/*offset*/, count-1/*limit*/); // someday skip last OP_GET_ELEMENT
345: //break;
346: } else
347: #endif
1.239 misha 348:
1.238 misha 349: changetail_or_append(*code,
350: OP::OP_GET_ELEMENT, false, /*=>*/OP::OP_GET_ELEMENT__WRITE,
351: /*or */OP::OP_WRITE_VALUE
352: ); /* value=pop; wcontext.write(value) */
353: }
354: P(*$$, *code);
1.1 paf 355: };
1.163 parser 356: get_value: '$' get_name_value { $$=$2 };
1.64 paf 357: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 358: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 359: name_without_curly_rdive:
360: name_without_curly_rdive_read
361: | name_without_curly_rdive_class;
1.19 paf 362: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 363: $$=N();
1.238 misha 364: YYSTYPE diving_code=$1;
1.206 paf 365: const String* first_name=LA2S(*diving_code);
1.239 misha 366: size_t count=diving_code->count();
1.238 misha 367: // self.xxx... => xxx...
1.206 paf 368: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 369: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.238 misha 370: O(*$$, OP::OP_WITH_SELF); /* stack: starting context */
371: P(*$$, *diving_code,
1.22 paf 372: /* skip over... */
1.239 misha 373: count>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP::OP_+origin+string*/);
374: }
375:
376:
377: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
1.240 misha 378: else if(maybe_make_get_object_element(*$$, *diving_code, count)){
1.239 misha 379: // optimisation for $object.field + ^object.method[
380: }
1.238 misha 381: #endif
1.239 misha 382:
383:
384: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
1.240 misha 385: else if(maybe_make_get_object_var_element(*$$, *diving_code, count)){
1.239 misha 386: // optimisation for $object.$var
387: }
1.238 misha 388: #endif
1.239 misha 389:
390:
391: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
392: else if(count==4){ // optimization
393: O(*$$,
394: (PC.in_call_value)
395: ? OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR // ^object[ : OP_VALUE+origin+string+OP_GET_ELEMENT => OP_VALUE__GET_ELEMENT_OR_OPERATOR+origin+string
396: : OP::OP_VALUE__GET_ELEMENT // $object : OP_VALUE+origin+string+OP_GET_ELEMENT => OP_VALUE__GET_ELEMENT+origin+string
397: );
398: P(*$$, *diving_code, 1/*offset*/, 2/*limit*/); // copy origin+value
399: } else {
400: O(*$$, OP::OP_WITH_READ); /* stack: starting context */
401: P(*$$, *diving_code);
402: }
1.233 misha 403: #else
1.239 misha 404: else {
1.238 misha 405: O(*$$, OP::OP_WITH_READ); /* stack: starting context */
1.179 paf 406:
1.238 misha 407: // ^if OP_ELEMENT => ^if OP_ELEMENT_OR_OPERATOR
408: // optimized OP_VALUE+origin+string+OP_GET_ELEMENT. => OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
1.239 misha 409: if(PC.in_call_value && count==4)
410: diving_code->put(count-1, OP::OP_GET_ELEMENT_OR_OPERATOR);
1.206 paf 411: P(*$$, *diving_code);
1.239 misha 412: }
1.233 misha 413: #endif
1.22 paf 414: /* diving code; stack: current context */
1.1 paf 415: };
1.206 paf 416: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2) };
417: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2) };
1.1 paf 418:
419: /* put */
420:
1.81 paf 421: put: '$' name_expr_wdive construct {
1.241 ! misha 422: $$=N();
! 423: #ifdef OPTIMIZE_BYTECODE_CONSTRUCT
! 424: if(maybe_make_root_or_write_construct(*$$, *$2, *$3)){
! 425: // $a(1) or $.b(2) or $c[d] or $.e[f]
! 426: } else
! 427: #endif
! 428: {
! 429: P(*$$, *$2); /* stack: context,name */
! 430: P(*$$, *$3); /* stack: context,name,constructor_value */
! 431: }
1.20 paf 432: };
1.44 paf 433: name_expr_wdive:
1.157 parser 434: name_expr_wdive_root
435: | name_expr_wdive_write
1.44 paf 436: | name_expr_wdive_class;
1.157 parser 437: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 438: $$=N();
1.238 misha 439: YYSTYPE diving_code=$1;
1.206 paf 440: const String* first_name=LA2S(*diving_code);
1.238 misha 441: // $self.xxx... => $xxx...
442: // OP_VALUE+origin+string+OP_GET_ELEMENT+... => OP_WITH_SELF+...
1.85 paf 443: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.229 misha 444: O(*$$, OP::OP_WITH_SELF); /* stack: starting context */
1.206 paf 445: P(*$$, *diving_code,
1.23 paf 446: /* skip over... */
1.229 misha 447: diving_code->count()>=4?4/*OP::OP_VALUE+origin+string+OP::OP_GET_ELEMENTx*/:3/*OP::OP_+origin+string*/);
1.23 paf 448: } else {
1.229 misha 449: O(*$$, OP::OP_WITH_ROOT); /* stack: starting context */
1.206 paf 450: P(*$$, *diving_code);
1.23 paf 451: }
452: /* diving code; stack: current context */
1.156 parser 453: };
1.157 parser 454: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 455: $$=N();
1.229 misha 456: O(*$$, OP::OP_WITH_WRITE); /* stack: starting context */
1.206 paf 457: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 458: };
1.206 paf 459: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2) };
1.20 paf 460:
1.149 parser 461: construct:
1.163 parser 462: construct_square
463: | construct_round
464: | construct_curly
1.149 parser 465: ;
1.211 paf 466: construct_square: '[' {
467: // allow $result_or_other_variable[ letters here any time ]
468: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
469: } any_constructor_code_value {
1.213 paf 470: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.211 paf 471: } ']' {
1.149 parser 472: // stack: context, name
1.211 paf 473: $$=$3; // stack: context, name, value
1.229 misha 474: O(*$$, OP::OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 475: }
476: ;
1.149 parser 477: construct_round: '(' expr_value ')' {
1.206 paf 478: $$=N();
1.229 misha 479: O(*$$, OP::OP_PREPARE_TO_EXPRESSION);
1.149 parser 480: // stack: context, name
1.206 paf 481: P(*$$, *$2); // stack: context, name, value
1.229 misha 482: O(*$$, OP::OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 483: }
1.52 paf 484: ;
1.149 parser 485: construct_curly: '{' maybe_codes '}' {
486: // stack: context, name
1.206 paf 487: $$=N();
1.229 misha 488: OA(*$$, OP::OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 489: };
490:
1.55 paf 491: any_constructor_code_value:
1.157 parser 492: void_value /* optimized $var[] case */
1.52 paf 493: | STRING /* optimized $var[STRING] case */
1.55 paf 494: | constructor_code_value /* $var[something complex] */
1.1 paf 495: ;
1.55 paf 496: constructor_code_value: constructor_code {
1.206 paf 497: $$=N();
1.229 misha 498: OA(*$$, OP::OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 499: /* some code that writes to that context */
500: /* context=pop; stack: context.value() */
1.1 paf 501: };
1.55 paf 502: constructor_code: codes__excluding_sole_str_literal;
1.206 paf 503: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 504:
1.1 paf 505: /* call */
506:
1.66 paf 507: call: call_value {
1.238 misha 508: #ifdef OPTIMIZE_BYTECODE_CUT_REM_OPERATOR
509: if((*$1).count())
510: #endif
511: {
512: $$=$1; /* stack: value */
513: changetail_or_append(*$$,
514: OP::OP_CALL, true, /*=>*/ OP::OP_CALL__WRITE,
515: /*or */OP::OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
516: }
1.66 paf 517: };
1.177 paf 518: call_value: '^' {
1.180 paf 519: PC.in_call_value=true;
1.177 paf 520: }
521: call_name {
1.180 paf 522: PC.in_call_value=false;
1.177 paf 523: }
1.154 parser 524: store_params EON { /* ^field.$method{vasya} */
1.238 misha 525: #ifdef OPTIMIZE_BYTECODE_CUT_REM_OPERATOR
526: const String* operator_name=LA2S(*$3, 0, OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR);
527: if(operator_name && *operator_name == REM_OPERATOR_NAME){
528: $$=N();
529: } else
530: #endif
531: {
532: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 533:
1.238 misha 534: YYSTYPE params_code=$5;
535: if(params_code->count()==3) { // probably [] case. [OP::OP_VALUE+origin+Void]
536: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
537: if(value->is_void()) // value is VVoid?
538: params_code=0; // ^zzz[] case. don't append lone empty param.
539: }
540: /* stack: context, method_junction */
541: OA(*$$, OP::OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
542: }
1.1 paf 543: };
544:
1.43 paf 545: call_name: name_without_curly_rdive;
1.38 paf 546:
1.206 paf 547: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2) };
1.69 paf 548: store_param:
549: store_square_param
550: | store_round_param
551: | store_curly_param
1.31 paf 552: ;
1.210 paf 553: store_square_param: '[' {
1.211 paf 554: // allow ^call[ letters here any time ]
1.210 paf 555: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
556: } store_code_param_parts {
1.213 paf 557: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.210 paf 558: } ']' {$$=$3};
1.69 paf 559: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 560: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 561: store_code_param_parts:
562: store_code_param_part
1.206 paf 563: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 564: ;
565: store_expr_param_parts:
566: store_expr_param_part
1.206 paf 567: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 568: ;
1.94 paf 569: store_curly_param_parts:
570: store_curly_param_part
1.206 paf 571: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3) }
1.94 paf 572: ;
1.120 paf 573: store_code_param_part: code_param_value {
1.32 paf 574: $$=$1;
1.120 paf 575: };
1.214 paf 576: store_expr_param_part: expr_value {
577: YYSTYPE expr_code=$1;
1.215 paf 578: if(expr_code->count()==3
1.234 misha 579: && (*expr_code)[0].code==OP::OP_VALUE) { // optimizing (double/bool/incidently 'string' too) case. [OP::OP_VALUE+origin+Double]. no evaluating
1.214 paf 580: $$=expr_code;
581: } else {
1.238 misha 582: YYSTYPE code=N();
1.229 misha 583: O(*code, OP::OP_PREPARE_TO_EXPRESSION);
1.214 paf 584: P(*code, *expr_code);
1.229 misha 585: O(*code, OP::OP_WRITE_EXPR_RESULT);
1.214 paf 586: $$=N();
1.229 misha 587: OA(*$$, OP::OP_EXPR_CODE__STORE_PARAM, code);
1.214 paf 588: }
1.69 paf 589: };
1.94 paf 590: store_curly_param_part: maybe_codes {
1.206 paf 591: $$=N();
1.229 misha 592: OA(*$$, OP::OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 593: };
1.120 paf 594: code_param_value:
1.157 parser 595: void_value /* optimized [;...] case */
1.120 paf 596: | STRING /* optimized [STRING] case */
597: | constructor_code_value /* [something complex] */
598: ;
1.1 paf 599:
600: /* name */
601:
1.206 paf 602: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 603:
1.206 paf 604: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 605: name_step: name_advance1 '.';
606: name_advance1: name_expr_value {
1.177 paf 607: // we know that name_advance1 not called from ^xxx context
608: // so we'll not check for operator call possibility as we do in name_advance2
609:
1.1 paf 610: /* stack: context */
611: $$=$1; /* stack: context,name */
1.229 misha 612: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 613: };
614: name_advance2: name_expr_value {
615: /* stack: context */
616: $$=$1; /* stack: context,name */
1.229 misha 617: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 618: }
1.4 paf 619: | STRING BOGUS
1.1 paf 620: ;
621: name_expr_value:
1.4 paf 622: STRING /* subname_is_const */
1.1 paf 623: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 624: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 625: | name_square_code_value /* [codes] */
1.1 paf 626: ;
627: name_expr_subvar_value: '$' subvar_ref_name_rdive {
628: $$=$2;
1.229 misha 629: O(*$$, OP::OP_GET_ELEMENT);
1.1 paf 630: };
1.4 paf 631: name_expr_with_subvar_value: STRING subvar_get_writes {
1.238 misha 632: YYSTYPE code;
1.183 paf 633: {
1.206 paf 634: change_string_literal_to_write_string_literal(*(code=$1));
635: P(*code, *$2);
1.183 paf 636: }
1.206 paf 637: $$=N();
1.229 misha 638: OA(*$$, OP::OP_STRING_POOL, code);
1.1 paf 639: };
1.212 paf 640: name_square_code_value: '[' {
641: // allow $result_or_other_variable[ letters here any time ]
642: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
643: } codes {
1.213 paf 644: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.212 paf 645: } ']' {
1.206 paf 646: $$=N();
1.229 misha 647: OA(*$$, OP::OP_OBJECT_POOL, $3); /* stack: empty write context */
1.183 paf 648: /* some code that writes to that context */
649: /* context=pop; stack: context.value() */
1.160 parser 650: };
1.154 parser 651: subvar_ref_name_rdive: STRING {
1.206 paf 652: $$=N();
1.229 misha 653: O(*$$, OP::OP_WITH_READ);
1.206 paf 654: P(*$$, *$1);
1.1 paf 655: };
1.206 paf 656: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 657: subvar__get_write: '$' subvar_ref_name_rdive {
658: $$=$2;
1.229 misha 659: O(*$$, OP::OP_GET_ELEMENT__WRITE);
1.42 paf 660: };
661:
1.154 parser 662: class_prefix:
663: class_static_prefix
664: | class_constructor_prefix
665: ;
1.155 parser 666: class_static_prefix: STRING ':' {
667: $$=$1; // stack: class name string
1.206 paf 668: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
669: if(VStateless_class* base=PC.cclass->base_class()) {
670: change_string_literal_value(*$$, base->name());
1.189 paf 671: } else {
672: strcpy(PC.error, "no base class declared");
673: YYERROR;
674: }
675: }
1.233 misha 676: #ifdef OPTIMIZE_BYTECODE_GET_CLASS
1.238 misha 677: // optimized OP_VALUE+origin+string+OP_GET_CLASS => OP_VALUE__GET_CLASS+origin+string
1.239 misha 678: maybe_change_first_opcode(*$$, OP::OP_VALUE, OP::OP_VALUE__GET_CLASS, true/*assert if top opcode != OP_VALUE*/)
1.233 misha 679: #else
1.229 misha 680: O(*$$, OP::OP_GET_CLASS);
1.233 misha 681: #endif
1.155 parser 682: };
683: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 684: $$=$1;
1.180 paf 685: if(!PC.in_call_value) {
1.154 parser 686: strcpy(PC.error, ":: not allowed here");
687: YYERROR;
688: }
1.229 misha 689: O(*$$, OP::OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 690: };
691:
1.53 paf 692:
1.56 paf 693: /* expr */
1.53 paf 694:
1.214 paf 695: expr_value: expr;
1.56 paf 696: expr:
1.214 paf 697: double_or_STRING
1.216 paf 698: | true_value
699: | false_value
1.64 paf 700: | get_value
1.66 paf 701: | call_value
1.216 paf 702: | '"' string_inside_quotes_value '"' { $$ = $2 }
703: | '\'' string_inside_quotes_value '\'' { $$ = $2 }
1.60 paf 704: | '(' expr ')' { $$ = $2; }
705: /* stack: operand // stack: @operand */
1.229 misha 706: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP::OP_NEG) }
1.202 paf 707: | '+' expr %prec NUNARY { $$=$2 }
1.229 misha 708: | '~' expr { $$=$2; O(*$$, OP::OP_INV) }
709: | '!' expr { $$=$2; O(*$$, OP::OP_NOT) }
710: | "def" expr { $$=$2; O(*$$, OP::OP_DEF) }
711: | "in" expr { $$=$2; O(*$$, OP::OP_IN) }
712: | "-f" expr { $$=$2; O(*$$, OP::OP_FEXISTS) }
713: | "-d" expr { $$=$2; O(*$$, OP::OP_DEXISTS) }
1.60 paf 714: /* stack: a,b // stack: a@b */
1.229 misha 715: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_SUB) }
716: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_ADD) }
717: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MUL) }
718: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_DIV) }
719: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MOD) }
720: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_INTDIV) }
721: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SL) }
722: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SR) }
723: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_AND) }
724: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_OR) }
725: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_XOR) }
726: | expr "&&" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_AND) }
727: | expr "||" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_OR) }
728: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_LOG_XOR) }
729: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LT) }
730: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GT) }
731: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LE) }
732: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GE) }
733: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_EQ) }
734: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_NE) }
735: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LT) }
736: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GT) }
737: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LE) }
738: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GE) }
739: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_EQ) }
740: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_NE) }
741: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_IS) }
1.56 paf 742: ;
1.214 paf 743:
744: double_or_STRING: STRING {
1.238 misha 745: // optimized OP_STRING => OP_VALUE for doubles
1.214 paf 746: maybe_change_string_literal_to_double_literal(*($$=$1));
747: };
1.55 paf 748:
1.65 paf 749: string_inside_quotes_value: maybe_codes {
1.238 misha 750: #ifdef OPTIMIZE_BYTECODE_STRING_POOL
751: // it brakes ^if(" 09 "){...}
752: YYSTYPE code=$1;
753: $$=N();
1.239 misha 754: if(code->count()==3 && maybe_change_first_opcode(*code, OP::OP_STRING__WRITE, OP::OP_VALUE)){
1.238 misha 755: // optimized OP_STRING__WRITE+origin+value => OP_VALUE+origin+value without starting OP_STRING_POOL
756: P(*$$, *code);
757: } else {
758: OA(*$$, OP::OP_STRING_POOL, code); /* stack: empty write context */
759: }
760: #else
1.206 paf 761: $$=N();
1.229 misha 762: OA(*$$, OP::OP_STRING_POOL, $1); /* stack: empty write context */
1.238 misha 763: #endif
1.183 paf 764: /* some code that writes to that context */
765: /* context=pop; stack: context.get_string() */
1.53 paf 766: };
1.1 paf 767:
1.27 paf 768: /* basics */
1.1 paf 769:
1.81 paf 770: write_string: STRING {
1.238 misha 771: // optimized OP_STRING+OP_WRITE_VALUE => OP_STRING__WRITE
1.209 paf 772: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 773: };
774:
1.216 paf 775: void_value: /* empty */ { $$=VL(/*we know that we will not change it*/const_cast<VVoid*>(&vvoid), 0, 0, 0) }
776: true_value: "true" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vtrue), 0, 0, 0) }
777: false_value: "false" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vfalse), 0, 0, 0) }
778:
1.206 paf 779: empty: /* empty */ { $$=N() };
1.1 paf 780:
781: %%
1.105 paf 782: #endif
1.1 paf 783:
784: /*
785: 000$111(2222)00
786: 000$111{3333}00
1.9 paf 787: $,^: push,=0
1.1 paf 788: 1:( { break=pop
789: 2:( ) pop
790: 3:{ } pop
791:
792: 000^111(2222)4444{33333}4000
1.9 paf 793: $,^: push,=0
1.1 paf 794: 1:( { break=pop
795: 2:( )=4
796: 3:{ }=4
797: 4:[^({]=pop
798: */
799:
1.206 paf 800: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
801: pc.source--;
802: if(pc.pos.col==0) {
803: --pc.pos.line; pc.pos.col=last_line_end_col;
804: } else
805: --pc.pos.col;
806:
807: }
808: static int yylex(YYSTYPE *lvalp, void *apc) {
809: register Parse_control& pc=*static_cast<Parse_control*>(apc);
810:
811: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 812: #define RC {result=c; goto break2; }
1.1 paf 813:
1.206 paf 814: register int c;
815: int result;
1.1 paf 816:
1.206 paf 817: if(pc.pending_state) {
818: result=pc.pending_state;
819: pc.pending_state=0;
1.1 paf 820: return result;
821: }
822:
1.206 paf 823: const char *begin=pc.source;
824: Pos begin_pos=pc.pos;
1.91 paf 825: const char *end;
1.67 paf 826: int skip_analized=0;
1.50 paf 827: while(true) {
1.206 paf 828: c=*(end=(pc.source++));
829: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 830:
1.208 paf 831: if(c=='\n')
1.206 paf 832: pc.pos_next_line();
1.208 paf 833: else
1.206 paf 834: pc.pos_next_c(c);
1.208 paf 835: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 836:
1.208 paf 837: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 838: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 839: // @SPECIAL
840: // ...
841: // @<here =
1.206 paf 842: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 843: } // continuing checks
1.206 paf 844: if(pc.ls==LS_USER) {
845: push_LS(pc, LS_DEF_NAME);
1.171 parser 846: RC;
1.175 paf 847: } else // @ in first column inside some code [when could that be?]
1.171 parser 848: result=BAD_METHOD_DECL_START;
849: goto break2;
1.209 paf 850: }
851: if(c=='^') {
1.206 paf 852: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 853: // handle after-method situation
1.206 paf 854: pop_LS(pc);
1.203 paf 855: result=EON;
856: skip_analized=-1; // return to punctuation afterwards to assure it's literality
857: goto break2;
858: }
1.206 paf 859: switch(pc.ls) {
1.169 parser 860: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
861: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
862: case LS_VAR_NAME_SIMPLE_WITH_COLON:
863: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
864: case LS_VAR_NAME_CURLY:
865: case LS_METHOD_NAME:
1.194 paf 866: case LS_USER_COMMENT:
1.169 parser 867: case LS_DEF_COMMENT:
868: // no literals in names, please
869: break;
870: default:
1.206 paf 871: switch(*pc.source) {
1.165 parser 872: // ^escaping some punctuators
1.228 misha 873: case '^': case '$': case ';': case '@':
1.126 paf 874: case '(': case ')':
1.48 paf 875: case '[': case ']':
876: case '{': case '}':
1.172 parser 877: case '"': case ':':
1.40 paf 878: if(end!=begin) {
1.206 paf 879: if(!pc.string_start)
880: pc.string_start=begin_pos;
1.40 paf 881: // append piece till ^
1.206 paf 882: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 883: }
1.63 paf 884: // reset piece 'begin' position & line
1.206 paf 885: begin=pc.source; // ->punctuation
886: begin_pos=pc.pos;
1.203 paf 887: // skip over _ after ^
1.206 paf 888: pc.source++; pc.pos.col++;
1.203 paf 889: // skip analysis = forced literal
890: continue;
1.114 paf 891:
892: // converting ^#HH into char(hex(HH))
893: case '#':
894: if(end!=begin) {
1.206 paf 895: if(!pc.string_start)
896: pc.string_start=begin_pos;
1.114 paf 897: // append piece till ^
1.206 paf 898: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 899: }
900: // #HH ?
1.228 misha 901: if(pc.source[1] && isxdigit(pc.source[1]) && pc.source[2] && isxdigit(pc.source[2])) {
1.218 paf 902: char c=(char)(
1.206 paf 903: hex_value[(unsigned char)pc.source[1]]*0x10+
1.218 paf 904: hex_value[(unsigned char)pc.source[2]]);
1.206 paf 905: if(c==0) {
1.114 paf 906: result=BAD_HEX_LITERAL;
907: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
908: }
909: // append char(hex(HH))
1.206 paf 910: pc.string.append(c);
1.114 paf 911: // skip over ^#HH
1.206 paf 912: pc.source+=3;
913: pc.pos.col+=3;
1.114 paf 914: // reset piece 'begin' position & line
1.206 paf 915: begin=pc.source; // ->after ^#HH
916: begin_pos=pc.pos;
1.203 paf 917: // skip analysis = forced literal
1.114 paf 918: continue;
919: }
1.228 misha 920: // just escaped char
921: // reset piece 'begin' position & line
922: begin=pc.source;
923: begin_pos=pc.pos;
924: // skip over _ after ^
925: pc.source++; pc.pos.col++;
926: // skip analysis = forced literal
927: continue;
1.1 paf 928: }
1.169 parser 929: break;
1.203 paf 930: }
1.169 parser 931: }
1.113 paf 932: // #comment start skipping
1.206 paf 933: if(c=='#' && pc.pos.col==1) {
1.112 paf 934: if(end!=begin) {
1.206 paf 935: if(!pc.string_start)
936: pc.string_start=begin_pos;
1.112 paf 937: // append piece till #
1.206 paf 938: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 939: }
940: // fall into COMMENT lexical state [wait for \n]
1.206 paf 941: push_LS(pc, LS_USER_COMMENT);
1.175 paf 942: continue;
1.112 paf 943: }
1.206 paf 944: switch(pc.ls) {
1.10 paf 945:
946: // USER'S = NOT OURS
1.1 paf 947: case LS_USER:
1.206 paf 948: case LS_NAME_SQUARE_PART: // name.[here].xxx
949: if(pc.trim_bof)
1.153 parser 950: switch(c) {
951: case '\n': case ' ': case '\t':
1.206 paf 952: begin=pc.source;
953: begin_pos=pc.pos;
1.152 parser 954: continue; // skip it
1.153 parser 955: default:
1.206 paf 956: pc.trim_bof=false;
1.152 parser 957: }
1.48 paf 958: switch(c) {
959: case '$':
1.206 paf 960: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 961: RC;
962: case '^':
1.206 paf 963: push_LS(pc, LS_METHOD_NAME);
1.48 paf 964: RC;
1.166 parser 965: case ']':
1.206 paf 966: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 967: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 968: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 969: RC;
970: }
1.160 parser 971: break;
1.166 parser 972: case '[': // $name.[co<[>de]
1.206 paf 973: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 974: lexical_brackets_nestage++;
1.161 parser 975: break;
1.112 paf 976: }
1.209 paf 977: if(pc.explicit_result && c)
978: switch(c) {
979: case '\n': case ' ': case '\t':
980: begin=pc.source;
981: begin_pos=pc.pos;
982: continue; // skip it
983: default:
984: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
985: goto break2;
986: }
1.112 paf 987: break;
988:
989: // #COMMENT
1.194 paf 990: case LS_USER_COMMENT:
1.112 paf 991: if(c=='\n') {
992: // skip comment
1.206 paf 993: begin=pc.source;
994: begin_pos=pc.pos;
1.112 paf 995:
1.206 paf 996: pop_LS(pc);
1.112 paf 997: continue;
1.1 paf 998: }
1.48 paf 999: break;
1000:
1001: // STRING IN EXPRESSION
1.145 parser 1002: case LS_EXPRESSION_STRING_QUOTED:
1003: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 1004: switch(c) {
1005: case '"':
1.145 parser 1006: case '\'':
1007: if(
1.206 paf 1008: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
1009: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
1010: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 1011: RC;
1012: }
1013: break;
1.48 paf 1014: case '$':
1.206 paf 1015: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1016: RC;
1017: case '^':
1.206 paf 1018: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1019: RC;
1.10 paf 1020: }
1021: break;
1022:
1023: // METHOD DEFINITION
1024: case LS_DEF_NAME:
1.48 paf 1025: switch(c) {
1026: case '[':
1.206 paf 1027: pc.ls=LS_DEF_PARAMS;
1.48 paf 1028: RC;
1029: case '\n':
1.206 paf 1030: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 1031: RC;
1.10 paf 1032: }
1033: break;
1.48 paf 1034:
1.10 paf 1035: case LS_DEF_PARAMS:
1.48 paf 1036: switch(c) {
1.192 paf 1037: case '$': // common error
1.193 paf 1038: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
1039: goto break2;
1.48 paf 1040: case ';':
1041: RC;
1042: case ']':
1.206 paf 1043: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 1044: RC;
1.49 paf 1045: case '\n': // wrong. bailing out
1.206 paf 1046: pop_LS(pc);
1.48 paf 1047: RC;
1.10 paf 1048: }
1049: break;
1.48 paf 1050:
1.10 paf 1051: case LS_DEF_LOCALS:
1.48 paf 1052: switch(c) {
1053: case '[':
1054: case ';':
1055: RC;
1056: case ']':
1.206 paf 1057: pc.ls=LS_DEF_COMMENT;
1.48 paf 1058: RC;
1059: case '\n': // wrong. bailing out
1.206 paf 1060: pop_LS(pc);
1.48 paf 1061: RC;
1.10 paf 1062: }
1063: break;
1.48 paf 1064:
1.10 paf 1065: case LS_DEF_COMMENT:
1066: if(c=='\n') {
1.206 paf 1067: pop_LS(pc);
1.48 paf 1068: RC;
1.37 paf 1069: }
1070: break;
1071:
1.48 paf 1072: case LS_DEF_SPECIAL_BODY:
1.175 paf 1073: if(c=='\n')
1.48 paf 1074: RC;
1075: break;
1076:
1077: // (EXPRESSION)
1.69 paf 1078: case LS_VAR_ROUND:
1079: case LS_METHOD_ROUND:
1.48 paf 1080: switch(c) {
1081: case ')':
1082: if(--lexical_brackets_nestage==0)
1.206 paf 1083: if(pc.ls==LS_METHOD_ROUND) // method round param ended
1084: pc.ls=LS_METHOD_AFTER; // look for method end
1085: else // pc.ls==LS_VAR_ROUND // variable constructor ended
1086: pop_LS(pc); // return to normal life
1.48 paf 1087: RC;
1.194 paf 1088: case '#': // comment start skipping
1089: if(end!=begin) {
1.206 paf 1090: if(!pc.string_start)
1091: pc.string_start=begin_pos;
1.194 paf 1092: // append piece till #
1.206 paf 1093: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 1094: }
1095: // fall into COMMENT lexical state [wait for \n]
1.206 paf 1096: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 1097: lexical_brackets_nestage=1;
1098: continue;
1.48 paf 1099: case '$':
1.206 paf 1100: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 1101: RC;
1102: case '^':
1.206 paf 1103: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1104: RC;
1105: case '(':
1106: lexical_brackets_nestage++;
1107: RC;
1.67 paf 1108: case '-':
1.206 paf 1109: switch(*pc.source) {
1.127 paf 1110: case 'f': // -f
1.67 paf 1111: skip_analized=1;
1112: result=FEXISTS;
1.127 paf 1113: goto break2;
1114: case 'd': // -d
1115: skip_analized=1;
1116: result=DEXISTS;
1117: goto break2;
1.191 paf 1118: default: // minus
1.67 paf 1119: result=c;
1.127 paf 1120: goto break2;
1121: }
1.67 paf 1122: goto break2;
1.173 paf 1123: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 1124: case '~':
1.48 paf 1125: case ';':
1126: RC;
1.193 paf 1127: case '&': case '|':
1.206 paf 1128: if(*pc.source==c) { // && ||
1.193 paf 1129: result=c=='&'?LAND:LOR;
1.67 paf 1130: skip_analized=1;
1.58 paf 1131: } else
1132: result=c;
1133: goto break2;
1.193 paf 1134: case '!':
1.206 paf 1135: switch(pc.source[0]) {
1.193 paf 1136: case '|': // !| !||
1137: skip_analized=1;
1.206 paf 1138: if(pc.source[1]=='|') {
1.193 paf 1139: skip_analized++;
1140: result=LXOR;
1141: } else
1142: result=NXOR;
1143: goto break2;
1144: case '=': // !=
1145: skip_analized=1;
1146: result=NNE;
1147: goto break2;
1148: }
1149: RC;
1.195 paf 1150:
1151: case '<': // <<, <=, <
1.206 paf 1152: switch(*pc.source) {
1.195 paf 1153: case '<': // <[<]
1154: skip_analized=1; result=NSL; break;
1155: case '=': // <[=]
1156: skip_analized=1; result=NLE; break;
1157: default: // <[]
1158: result=c; break;
1159: }
1160: goto break2;
1161: case '>': // >>, >=, >
1.206 paf 1162: switch(*pc.source) {
1.195 paf 1163: case '>': // >[>]
1164: skip_analized=1; result=NSR; break;
1165: case '=': // >[=]
1166: skip_analized=1; result=NGE; break;
1167: default: // >[]
1168: result=c; break;
1169: }
1170: goto break2;
1171: case '=': // ==
1.206 paf 1172: switch(*pc.source) {
1.195 paf 1173: case '=': // =[=]
1174: skip_analized=1; result=NEQ; break;
1175: default: // =[]
1176: result=c; break; // not used now
1177: }
1.58 paf 1178: goto break2;
1.195 paf 1179:
1.48 paf 1180: case '"':
1.206 paf 1181: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1182: RC;
1183: case '\'':
1.206 paf 1184: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1185: RC;
1.50 paf 1186: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1187: if(end==begin) // right after whitespace
1.206 paf 1188: if(isspace(pc.source[1])) {
1189: switch(*pc.source) {
1.117 paf 1190: // case '?': // ok [and bad cases, yacc would bark at them]
1191: case 't': // lt gt [et nt]
1192: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1193: skip_analized=1;
1194: goto break2;
1195: case 'e': // le ge ne [ee]
1196: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1197: skip_analized=1;
1198: goto break2;
1199: case 'q': // eq [lq gq nq]
1200: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1201: skip_analized=1;
1202: goto break2;
1203: }
1.67 paf 1204: }
1205: break;
1206: case 'i':
1207: if(end==begin) // right after whitespace
1.206 paf 1208: if(isspace(pc.source[1])) {
1209: switch(pc.source[0]) {
1.117 paf 1210: case 'n': // in
1.95 paf 1211: skip_analized=1;
1212: result=IN;
1213: goto break2;
1.117 paf 1214: case 's': // is
1.95 paf 1215: skip_analized=1;
1216: result=IS;
1217: goto break2;
1218: }
1.67 paf 1219: }
1220: break;
1221: case 'd':
1222: if(end==begin) // right after whitespace
1.206 paf 1223: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.225 misha 1224: switch(pc.source[2]){
1225: case ' ': case '\t': case '\n': case '"': case '\'': case '^': case '$': // non-quoted string without whitespace after 'def' is not allowed
1226: skip_analized=2;
1227: result=DEF;
1228: goto break2;
1229: }
1230: // error: incorrect char after 'def'
1.50 paf 1231: }
1.48 paf 1232: break;
1.216 paf 1233: case 't':
1234: if(end==begin) // right after whitespace
1.225 misha 1235: if(pc.source[0]=='r' && pc.source[1]=='u' && pc.source[2]=='e') { // true
1.216 paf 1236: skip_analized=3;
1237: result=LITERAL_TRUE;
1238: goto break2;
1239: }
1240: break;
1241: case 'f':
1242: if(end==begin) // right after whitespace
1.225 misha 1243: if(pc.source[0]=='a' && pc.source[1]=='l' && pc.source[2]=='s' && pc.source[3]=='e') { // false
1.216 paf 1244: skip_analized=4;
1245: result=LITERAL_FALSE;
1246: goto break2;
1247: }
1248: break;
1.48 paf 1249: case ' ': case '\t': case '\n':
1.63 paf 1250: if(end!=begin) { // there were a string after previous operator?
1251: result=0; // return that string
1252: goto break2;
1.48 paf 1253: }
1.63 paf 1254: // that's a leading|traling space or after-operator-space
1255: // ignoring it
1256: // reset piece 'begin' position & line
1.206 paf 1257: begin=pc.source; // after whitespace char
1258: begin_pos=pc.pos;
1.48 paf 1259: continue;
1.1 paf 1260: }
1261: break;
1.194 paf 1262: case LS_EXPRESSION_COMMENT:
1263: if(c=='(')
1264: lexical_brackets_nestage++;
1265:
1.206 paf 1266: switch(*pc.source) {
1.194 paf 1267: case '\n': case ')':
1.206 paf 1268: if(*pc.source==')')
1.194 paf 1269: if(--lexical_brackets_nestage!=0)
1270: continue;
1271:
1272: // skip comment
1.206 paf 1273: begin=pc.source;
1274: begin_pos=pc.pos;
1.194 paf 1275:
1.206 paf 1276: pop_LS(pc);
1.194 paf 1277: continue;
1278: }
1279: break;
1.1 paf 1280:
1.10 paf 1281: // VARIABLE GET/PUT/WITH
1.166 parser 1282: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1283: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1284: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1285: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1286: if(
1.206 paf 1287: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1288: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1289: // name in expr ends also before
1.48 paf 1290: switch(c) {
1.181 paf 1291: // expression minus
1.92 paf 1292: case '-':
1.181 paf 1293: // expression integer division
1294: case '\\':
1.206 paf 1295: pop_LS(pc);
1296: pc.ungetc();
1.48 paf 1297: result=EON;
1298: goto break2;
1299: }
1300: }
1.166 parser 1301: if(
1.206 paf 1302: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1303: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1304: // name already has ':', stop before next
1305: switch(c) {
1306: case ':':
1.206 paf 1307: pop_LS(pc);
1308: pc.ungetc();
1.142 parser 1309: result=EON;
1310: goto break2;
1311: }
1312: }
1.48 paf 1313: switch(c) {
1314: case 0:
1315: case ' ': case '\t': case '\n':
1316: case ';':
1.126 paf 1317: case ']': case '}': case ')':
1318: case '"': case '\'':
1.139 parser 1319: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1320: case '+': case '*': case '/': case '%':
1321: case '&': case '|':
1322: case '=': case '!':
1.99 paf 1323: // common delimiters
1.190 paf 1324: case ',': case '?': case '#':
1.220 paf 1325: // mysql column separators
1326: case '`':
1.139 parser 1327: // before call
1328: case '^':
1.206 paf 1329: pop_LS(pc);
1330: pc.ungetc();
1.13 paf 1331: result=EON;
1.1 paf 1332: goto break2;
1.48 paf 1333: case '[':
1.162 parser 1334: // $name.<[>code]
1.206 paf 1335: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1336: end[-1]=='$'/*was start of get*/ ||
1337: end[-1]==':'/*was class name delim */ ||
1338: end[-1]=='.'/*was name delim */
1.162 parser 1339: )) {
1.206 paf 1340: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1341: lexical_brackets_nestage=1;
1342: RC;
1343: }
1.206 paf 1344: pc.ls=LS_VAR_SQUARE;
1.1 paf 1345: lexical_brackets_nestage=1;
1.48 paf 1346: RC;
1347: case '{':
1348: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1349: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1350: } else {
1.206 paf 1351: pc.ls=LS_VAR_CURLY;
1.48 paf 1352: lexical_brackets_nestage=1;
1353: }
1.69 paf 1354:
1.48 paf 1355: RC;
1356: case '(':
1.206 paf 1357: pc.ls=LS_VAR_ROUND;
1.1 paf 1358: lexical_brackets_nestage=1;
1.48 paf 1359: RC;
1360: case '.': // name part delim
1361: case '$': // name part subvar
1.160 parser 1362: case ':': // class<:>name
1.166 parser 1363: // go to _WITHOUT_COLON state variant...
1.206 paf 1364: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1365: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1366: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1367: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1368: // ...stop before next ':'
1.48 paf 1369: RC;
1.1 paf 1370: }
1371: break;
1.48 paf 1372:
1.1 paf 1373: case LS_VAR_NAME_CURLY:
1.48 paf 1374: switch(c) {
1.162 parser 1375: case '[':
1.166 parser 1376: // ${name.<[>code]}
1.206 paf 1377: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1378: lexical_brackets_nestage=1;
1379: RC;
1.48 paf 1380: case '}': // ${name} finished, restoring LS
1.206 paf 1381: pop_LS(pc);
1.48 paf 1382: RC;
1383: case '.': // name part delim
1384: case '$': // name part subvar
1385: case ':': // ':name' or 'class:name'
1386: RC;
1.1 paf 1387: }
1388: break;
1.48 paf 1389:
1390: case LS_VAR_SQUARE:
1391: switch(c) {
1392: case '$':
1.206 paf 1393: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1394: RC;
1395: case '^':
1.206 paf 1396: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1397: RC;
1398: case ']':
1.1 paf 1399: if(--lexical_brackets_nestage==0) {
1.206 paf 1400: pop_LS(pc);
1.48 paf 1401: RC;
1.1 paf 1402: }
1.48 paf 1403: break;
1404: case ';': // operator_or_fmt;value delim
1405: RC;
1406: case '[':
1407: lexical_brackets_nestage++;
1408: break;
1.1 paf 1409: }
1410: break;
1.48 paf 1411:
1.1 paf 1412: case LS_VAR_CURLY:
1.48 paf 1413: switch(c) {
1414: case '$':
1.206 paf 1415: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1416: RC;
1417: case '^':
1.206 paf 1418: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1419: RC;
1420: case '}':
1.1 paf 1421: if(--lexical_brackets_nestage==0) {
1.206 paf 1422: pop_LS(pc);
1.48 paf 1423: RC;
1.1 paf 1424: }
1.48 paf 1425: break;
1426: case '{':
1.1 paf 1427: lexical_brackets_nestage++;
1.48 paf 1428: break;
1429: }
1.1 paf 1430: break;
1431:
1.10 paf 1432: // METHOD CALL
1.1 paf 1433: case LS_METHOD_NAME:
1.48 paf 1434: switch(c) {
1435: case '[':
1.166 parser 1436: // ^name.<[>code].xxx
1.206 paf 1437: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1438: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1439: end[-1]==':'/*was class name delim */ ||
1440: end[-1]=='.'/*was name delim */
1.162 parser 1441: )) {
1.206 paf 1442: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1443: lexical_brackets_nestage=1;
1444: RC;
1445: }
1.206 paf 1446: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1447: lexical_brackets_nestage=1;
1.48 paf 1448: RC;
1449: case '{':
1.206 paf 1450: pc.ls=LS_METHOD_CURLY;
1.1 paf 1451: lexical_brackets_nestage=1;
1.48 paf 1452: RC;
1.69 paf 1453: case '(':
1.206 paf 1454: pc.ls=LS_METHOD_ROUND;
1.69 paf 1455: lexical_brackets_nestage=1;
1456: RC;
1.48 paf 1457: case '.': // name part delim
1458: case '$': // name part subvar
1459: case ':': // ':name' or 'class:name'
1.170 parser 1460: case '^': // ^abc^xxx wrong. bailing out
1461: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1462: case ' ': // ^if ( wrong. bailing out
1.48 paf 1463: RC;
1.1 paf 1464: }
1465: break;
1.48 paf 1466:
1467: case LS_METHOD_SQUARE:
1468: switch(c) {
1469: case '$':
1.206 paf 1470: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1471: RC;
1472: case '^':
1.206 paf 1473: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1474: RC;
1475: case ';': // param delim
1476: RC;
1477: case ']':
1.1 paf 1478: if(--lexical_brackets_nestage==0) {
1.206 paf 1479: pc.ls=LS_METHOD_AFTER;
1.48 paf 1480: RC;
1.1 paf 1481: }
1.48 paf 1482: break;
1483: case '[':
1.1 paf 1484: lexical_brackets_nestage++;
1.48 paf 1485: break;
1486: }
1.1 paf 1487: break;
1.48 paf 1488:
1.1 paf 1489: case LS_METHOD_CURLY:
1.48 paf 1490: switch(c) {
1491: case '$':
1.206 paf 1492: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1493: RC;
1494: case '^':
1.206 paf 1495: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1496: RC;
1497: case ';': // param delim
1.48 paf 1498: RC;
1499: case '}':
1.1 paf 1500: if(--lexical_brackets_nestage==0) {
1.206 paf 1501: pc.ls=LS_METHOD_AFTER;
1.48 paf 1502: RC;
1.1 paf 1503: }
1.48 paf 1504: break;
1505: case '{':
1.1 paf 1506: lexical_brackets_nestage++;
1.48 paf 1507: break;
1508: }
1.209 paf 1509: if(pc.explicit_result && c)
1510: switch(c) {
1511: case '\n': case ' ': case '\t':
1512: begin=pc.source;
1513: begin_pos=pc.pos;
1514: continue; // skip it
1515: default:
1516: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
1517: goto break2;
1518: }
1.1 paf 1519: break;
1.48 paf 1520:
1.1 paf 1521: case LS_METHOD_AFTER:
1.69 paf 1522: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1523: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1524: lexical_brackets_nestage=1;
1.48 paf 1525: RC;
1.1 paf 1526: }
1.69 paf 1527: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1528: pc.ls=LS_METHOD_CURLY;
1.69 paf 1529: lexical_brackets_nestage=1;
1530: RC;
1531: }
1532: if(c=='(') {/* ]( }( )( */
1.206 paf 1533: pc.ls=LS_METHOD_ROUND;
1.1 paf 1534: lexical_brackets_nestage=1;
1.48 paf 1535: RC;
1.1 paf 1536: }
1.206 paf 1537: pop_LS(pc);
1538: pc.ungetc();
1.13 paf 1539: result=EON;
1.1 paf 1540: goto break2;
1541: }
1.9 paf 1542: if(c==0) {
1.1 paf 1543: result=-1;
1544: break;
1545: }
1546: }
1547:
1548: break2:
1.59 paf 1549: if(end!=begin) { // there is last piece?
1550: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1551: // strip last \n
1.10 paf 1552: end--;
1.137 parser 1553: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1554: end--;
1.59 paf 1555: }
1.206 paf 1556: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1557: if(!pc.string_start)
1558: pc.string_start=begin_pos;
1.59 paf 1559: // append it
1.206 paf 1560: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1561: }
1.59 paf 1562: }
1.206 paf 1563: if(!pc.string.is_empty()) { // something accumulated?
1564: // create STRING value: array of OP_VALUE+origin+vstring
1565: *lvalp=VL(
1566: new VString(*new String(pc.string, String::L_CLEAN)),
1567: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1568: // new pieces storage
1.206 paf 1569: pc.string.clear();
1570: pc.string_start.clear();
1.58 paf 1571: // make current result be pending for next call, return STRING for now
1.206 paf 1572: pc.pending_state=result; result=STRING;
1.58 paf 1573: }
1.67 paf 1574: if(skip_analized) {
1.206 paf 1575: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1576: }
1.58 paf 1577: return result;
1.1 paf 1578: }
1579:
1.206 paf 1580: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1581: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1582: return 1;
1.110 paf 1583: }
1.1 paf 1584:
1.110 paf 1585: static void yyprint(FILE *file, int type, YYSTYPE value) {
1586: if(type==STRING)
1.206 paf 1587: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1588: }
E-mail:
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to compile.y CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [parser3project] / parser3 / src / main