Annotation of parser3/src/main/compile.y, revision 1.237
1.168 parser 1: %{
1.105 paf 2: /** @file
1.106 paf 3: Parser: compiler(lexical parser and grammar).
4:
1.215 paf 5: Copyright (c) 2001-2005 ArtLebedev Group (http://www.artlebedev.com)
1.168 parser 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.217 paf 7:
1.237 ! misha 8: $Id: compile.y,v 1.236 2009-05-01 11:42:14 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"
1.1 paf 47:
1.206 paf 48: // forwards
49:
50: static int real_yyerror(Parse_control* pc, char* s);
51: static void yyprint(FILE* file, int type, YYSTYPE value);
52: static int yylex(YYSTYPE* lvalp, void* pc);
1.1 paf 53:
1.216 paf 54: static const VBool vfalse(false);
55: static const VBool vtrue(true);
56: static const VVoid vvoid;
57:
1.8 paf 58: // local convinient inplace typecast & var
1.205 paf 59: #undef PC
1.206 paf 60: #define PC (*(Parse_control *)pc)
61: #undef POOL
1.114 paf 62: #define POOL (*PC.pool)
1.107 paf 63: #ifndef DOXYGEN
1.1 paf 64: %}
65:
66: %pure_parser
67:
1.13 paf 68: %token EON
1.4 paf 69: %token STRING
1.1 paf 70: %token BOGUS
1.55 paf 71:
1.58 paf 72: %token BAD_STRING_COMPARISON_OPERATOR
1.114 paf 73: %token BAD_HEX_LITERAL
1.171 parser 74: %token BAD_METHOD_DECL_START
1.193 paf 75: %token BAD_METHOD_PARAMETER_NAME_CHARACTER
1.209 paf 76: %token BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE
1.58 paf 77:
1.59 paf 78: %token LAND "&&"
1.58 paf 79: %token LOR "||"
1.193 paf 80: %token LXOR "!||"
81: %token NXOR "!|"
1.58 paf 82:
83: %token NLE "<="
84: %token NGE ">="
85: %token NEQ "=="
86: %token NNE "!="
1.195 paf 87: %token NSL "<<"
88: %token NSR ">>"
1.58 paf 89:
90: %token SLT "lt"
91: %token SGT "gt"
92: %token SLE "le"
93: %token SGE "ge"
94: %token SEQ "eq"
95: %token SNE "ne"
96:
1.67 paf 97: %token DEF "def"
98: %token IN "in"
99: %token FEXISTS "-f"
1.127 paf 100: %token DEXISTS "-d"
1.95 paf 101: %token IS "is"
1.67 paf 102:
1.216 paf 103: %token LITERAL_TRUE "true"
104: %token LITERAL_FALSE "false"
105:
1.57 paf 106: /* logical */
1.193 paf 107: %left "!||"
1.57 paf 108: %left "||"
109: %left "&&"
1.131 paf 110: %left '<' '>' "<=" ">=" "lt" "gt" "le" "ge"
111: %left "==" "!=" "eq" "ne"
112: %left "is" "def" "in" "-f" "-d"
1.57 paf 113:
114: /* bitwise */
1.193 paf 115: %left "!|"
1.131 paf 116: %left '|'
117: %left '&'
1.202 paf 118: %left "<<" ">>"
1.57 paf 119:
1.56 paf 120: /* numerical */
1.202 paf 121: %left '+' '-'
122: %left '*' '/' '\\' '%'
123: %left NUNARY /* unary - + */
124:
125: /* out-of-group */
126: %left '~' /* bitwise */
127: %left '!' /* logical */
1.1 paf 128:
129: %%
1.195 paf 130: all:
1.10 paf 131: one_big_piece {
1.206 paf 132: Method& method=*new Method(Method::CT_ANY,
1.81 paf 133: 0, 0, /*min, max numbered_params_count*/
1.75 paf 134: 0/*param_names*/, 0/*local_names*/,
135: $1/*parser_code*/, 0/*native_code*/);
1.206 paf 136: PC.cclass->add_method(PC.alias_method(main_method_name), method);
1.10 paf 137: }
138: | methods;
139:
140: methods: method | methods method;
141: one_big_piece: maybe_codes;
142:
1.34 paf 143: method: control_method | code_method;
144:
145: control_method: '@' STRING '\n'
1.132 paf 146: maybe_control_strings {
1.206 paf 147: const String& command=*LA2S(*$2);
1.34 paf 148: YYSTYPE strings_code=$4;
1.206 paf 149: if(strings_code->count()<1*OPERATIONS_PER_OPVALUE) {
1.114 paf 150: strcpy(PC.error, "@");
151: strcat(PC.error, command.cstr());
152: strcat(PC.error, " is empty");
1.37 paf 153: YYERROR;
154: }
1.74 paf 155: if(command==CLASS_NAME) {
1.206 paf 156: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.73 paf 157: // new class' name
1.206 paf 158: const String& name=*LA2S(*strings_code);
1.73 paf 159: // creating the class
1.206 paf 160: VStateless_class* cclass=new VClass;
1.226 misha 161: PC.cclass_new=cclass;
162: PC.cclass_new->set_name(name);
1.73 paf 163: } else {
1.206 paf 164: strcpy(PC.error, "@"CLASS_NAME" must contain only one line with class name (contains more then one)");
1.34 paf 165: YYERROR;
166: }
1.130 paf 167: } else if(command==USE_CONTROL_METHOD_NAME) {
1.206 paf 168: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE)
169: PC.request.use_file(PC.request.main_class, *LA2S(*strings_code, i));
1.130 paf 170: } else if(command==BASE_NAME) {
1.226 misha 171: if(PC.append){
172: strcpy(PC.error, "can't set base while appending methods to class '");
173: strncat(PC.error, PC.cclass->name().cstr(), MAX_STRING/2);
174: strcat(PC.error, "'");
175: YYERROR;
176: }
177: PC.class_add();
1.188 paf 178: if(PC.cclass->base_class()) { // already changed from default?
1.130 paf 179: strcpy(PC.error, "class already have a base '");
1.226 misha 180: strncat(PC.error, PC.cclass->base_class()->name().cstr(), MAX_STRING/2);
1.130 paf 181: strcat(PC.error, "'");
182: YYERROR;
183: }
1.206 paf 184: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
185: const String& base_name=*LA2S(*strings_code);
186: if(Value* base_class_value=PC.request.classes().get(base_name)) {
187: // @CLASS == @BASE sanity check
188: if(VStateless_class *base_class=base_class_value->get_class()) {
189: if(PC.cclass==base_class) {
190: strcpy(PC.error, "@"CLASS_NAME" equals @"BASE_NAME);
191: YYERROR;
192: }
193: PC.cclass->get_class()->set_base(base_class);
194: } else { // they asked to derive from a class without methods ['env' & co]
195: strcpy(PC.error, base_name.cstr());
196: strcat(PC.error, ": you can not derive from this class in @"BASE_NAME);
197: YYERROR;
198: }
199: } else {
1.130 paf 200: strcpy(PC.error, base_name.cstr());
201: strcat(PC.error, ": undefined class in @"BASE_NAME);
1.73 paf 202: YYERROR;
203: }
1.34 paf 204: } else {
1.130 paf 205: strcpy(PC.error, "@"BASE_NAME" must contain sole name");
1.34 paf 206: YYERROR;
207: }
1.223 misha 208: } else if(command==OPTIONS_CONTROL_METHOD_NAME) {
209: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE) {
210: const String& option=*LA2S(*strings_code, i);
1.226 misha 211: if(option==OPTION_ALL_VARS_LOCAL_NAME){
212: PC.set_all_vars_local();
1.230 misha 213: } else if(option==OPTION_PARTIAL_CLASS){
214: if(PC.cclass_new){
215: if(VStateless_class* existed=PC.get_existed_class(PC.cclass_new)){
216: if(!PC.reuse_existed_class(existed)){
217: strcpy(PC.error, "can't append methods to '");
218: strncat(PC.error, PC.cclass_new->name().cstr(), MAX_STRING/2);
219: strcat(PC.error, "' - the class wasn't marked as partial");
220: YYERROR;
221: }
1.226 misha 222: } else {
1.230 misha 223: // mark new class as partial. we can add methods to it later.
224: PC.cclass_new->set_partial();
1.226 misha 225: }
1.230 misha 226: } else {
227: strcpy(PC.error, "'"OPTION_PARTIAL_CLASS"' option should be used straight after @"CLASS_NAME);
1.226 misha 228: YYERROR;
229: }
1.223 misha 230: } else {
1.226 misha 231: strcpy(PC.error, "'");
232: strncat(PC.error, option.cstr(), MAX_STRING/2);
233: strcat(PC.error, "' invalid option. valid options are "
1.230 misha 234: "'"OPTION_PARTIAL_CLASS"' and '"OPTION_ALL_VARS_LOCAL_NAME"'");
1.223 misha 235: YYERROR;
236: }
237: }
1.130 paf 238: } else {
239: strcpy(PC.error, "'");
240: strncat(PC.error, command.cstr(), MAX_STRING/2);
241: strcat(PC.error, "' invalid special name. valid names are "
1.223 misha 242: "'"CLASS_NAME"', '"USE_CONTROL_METHOD_NAME"', '"BASE_NAME"' and '"OPTIONS_CONTROL_METHOD_NAME"'.");
1.130 paf 243: YYERROR;
1.34 paf 244: }
245: };
1.132 paf 246: maybe_control_strings: empty | control_strings;
1.206 paf 247: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2) };
1.37 paf 248: control_string: maybe_string '\n';
249: maybe_string: empty | STRING;
1.34 paf 250:
1.222 misha 251: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n' {
1.226 misha 252: PC.class_add();
1.208 paf 253: PC.explicit_result=false;
1.10 paf 254:
255: YYSTYPE params_names_code=$3;
1.206 paf 256: ArrayString* params_names=0;
257: if(int size=params_names_code->count()) {
258: params_names=new ArrayString;
259: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
260: *params_names+=LA2S(*params_names_code, i);
1.75 paf 261: }
1.10 paf 262:
263: YYSTYPE locals_names_code=$4;
1.206 paf 264: ArrayString* locals_names=0;
1.223 misha 265: bool all_vars_local=false;
1.206 paf 266: if(int size=locals_names_code->count()) {
267: locals_names=new ArrayString;
1.208 paf 268: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE) {
269: const String* local_name=LA2S(*locals_names_code, i);
270: if(*local_name==RESULT_VAR_NAME)
271: PC.explicit_result=true;
1.226 misha 272: else if(*local_name==OPTION_ALL_VARS_LOCAL_NAME)
1.223 misha 273: all_vars_local=true;
1.208 paf 274: else
275: *locals_names+=local_name;
276: }
1.75 paf 277: }
1.231 misha 278: if(!all_vars_local && PC.cclass && PC.cclass->is_vars_local())
1.223 misha 279: all_vars_local=true;
1.10 paf 280:
1.208 paf 281: Method* method=new Method(
1.206 paf 282: //name,
1.122 paf 283: Method::CT_ANY,
1.81 paf 284: 0, 0/*min,max numbered_params_count*/,
1.76 paf 285: params_names, locals_names,
1.223 misha 286: 0/*to be filled later in next {} */, 0, all_vars_local);
1.221 misha 287:
1.208 paf 288: *reinterpret_cast<Method**>(&$$)=method;
289:
290: // todo: check [][;result;]
1.222 misha 291: } maybe_codes {
1.231 misha 292: Method& method=*reinterpret_cast<Method*>($7);
293: // fill in the code
294: method.parser_code=$8;
295:
296: // register in class
297: const String& name=*LA2S(*$2);
298: PC.cclass->add_method(PC.alias_method(name), method);
1.8 paf 299: };
1.10 paf 300:
301: maybe_bracketed_strings: empty | bracketed_maybe_strings;
302: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
303: maybe_strings: empty | strings;
1.206 paf 304: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3) };
1.10 paf 305:
306: maybe_comment: empty | STRING;
1.1 paf 307:
308: /* codes */
309:
1.10 paf 310: maybe_codes: empty | codes;
311:
1.206 paf 312: codes: code | codes code { $$=$1; P(*$$, *$2) };
1.81 paf 313: code: write_string | action;
1.209 paf 314: action: get | put | call;
1.1 paf 315:
316: /* get */
317:
1.64 paf 318: get: get_value {
1.184 paf 319: $$=$1; /* stack: resulting value */
1.235 misha 320: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.233 misha 321: if(!replace_top_opcode(*$$, OP::OP_VALUE__GET_ELEMENT, OP::OP_VALUE__GET_ELEMENT__WRITE))
1.235 misha 322: #endif
1.233 misha 323: changetail_or_append(*$$,
324: OP::OP_GET_ELEMENT, false, /*->*/OP::OP_GET_ELEMENT__WRITE,
325: /*or */OP::OP_WRITE_VALUE
326: ); /* value=pop; wcontext.write(value) */
1.1 paf 327: };
1.163 parser 328: get_value: '$' get_name_value { $$=$2 };
1.64 paf 329: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 330: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 331: name_without_curly_rdive:
332: name_without_curly_rdive_read
333: | name_without_curly_rdive_class;
1.19 paf 334: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 335: $$=N();
336: ArrayOperation* diving_code=$1;
337: const String* first_name=LA2S(*diving_code);
1.179 paf 338: // self.xxx... -> xxx...
1.206 paf 339: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 340: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.229 misha 341: O(*yyval, OP::OP_WITH_SELF); /* stack: starting context */
1.206 paf 342: P(*yyval, *diving_code,
1.22 paf 343: /* skip over... */
1.229 misha 344: diving_code->count()>=4?4/*OP::OP_VALUE+origin+string+OP::OP_GET_ELEMENTx*/:3/*OP::OP_+origin+string*/);
1.22 paf 345: } else {
1.233 misha 346: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.236 misha 347: size_t count=diving_code->count();
1.237 ! misha 348: if(count==4){ // optimisations for popular simple cases
1.233 misha 349: O(*yyval,
1.237 ! misha 350: (PC.in_call_value) // ^call
1.233 misha 351: ? OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR // OP_VALUE+origin+string+OP_GET_ELEMENT -> OP_VALUE__GET_ELEMENT_OR_OPERATOR+origin+string
352: : OP::OP_VALUE__GET_ELEMENT // OP_VALUE+origin+string+OP_GET_ELEMENT -> OP_VALUE__GET_ELEMENT+origin+string
353: );
1.236 misha 354: P(*$$, *diving_code, 1/*offset*/, 2/*limit*/); // copy origin+value
1.233 misha 355: } else {
356: O(*yyval, OP::OP_WITH_READ); /* stack: starting context */
357: P(*$$, *diving_code);
358: }
359: #else
1.229 misha 360: O(*yyval, OP::OP_WITH_READ); /* stack: starting context */
1.179 paf 361:
1.201 paf 362: // ^if ELEMENT -> ^if ELEMENT_OR_OPERATOR
1.206 paf 363: // OP_VALUE+origin+string+OP_GET_ELEMENT. -> OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
364: if(PC.in_call_value && diving_code->count()==4)
1.229 misha 365: diving_code->put(4-1, OP::OP_GET_ELEMENT_OR_OPERATOR);
1.206 paf 366: P(*$$, *diving_code);
1.233 misha 367: #endif
1.22 paf 368: }
369: /* diving code; stack: current context */
1.1 paf 370: };
1.206 paf 371: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2) };
372: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2) };
1.1 paf 373:
374: /* put */
375:
1.81 paf 376: put: '$' name_expr_wdive construct {
1.20 paf 377: $$=$2; /* stack: context,name */
1.206 paf 378: P(*$$, *$3); /* stack: context,name,constructor_value */
1.20 paf 379: };
1.44 paf 380: name_expr_wdive:
1.157 parser 381: name_expr_wdive_root
382: | name_expr_wdive_write
1.44 paf 383: | name_expr_wdive_class;
1.157 parser 384: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 385: $$=N();
386: ArrayOperation* diving_code=$1;
387: const String* first_name=LA2S(*diving_code);
1.179 paf 388: // $self.xxx... -> $xxx...
1.206 paf 389: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 390: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.229 misha 391: O(*$$, OP::OP_WITH_SELF); /* stack: starting context */
1.206 paf 392: P(*$$, *diving_code,
1.23 paf 393: /* skip over... */
1.229 misha 394: diving_code->count()>=4?4/*OP::OP_VALUE+origin+string+OP::OP_GET_ELEMENTx*/:3/*OP::OP_+origin+string*/);
1.23 paf 395: } else {
1.229 misha 396: O(*$$, OP::OP_WITH_ROOT); /* stack: starting context */
1.206 paf 397: P(*$$, *diving_code);
1.23 paf 398: }
399: /* diving code; stack: current context */
1.156 parser 400: };
1.157 parser 401: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 402: $$=N();
1.229 misha 403: O(*$$, OP::OP_WITH_WRITE); /* stack: starting context */
1.206 paf 404: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 405: };
1.206 paf 406: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2) };
1.20 paf 407:
1.149 parser 408: construct:
1.163 parser 409: construct_square
410: | construct_round
411: | construct_curly
1.149 parser 412: ;
1.211 paf 413: construct_square: '[' {
414: // allow $result_or_other_variable[ letters here any time ]
415: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
416: } any_constructor_code_value {
1.213 paf 417: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.211 paf 418: } ']' {
1.149 parser 419: // stack: context, name
1.211 paf 420: $$=$3; // stack: context, name, value
1.229 misha 421: O(*$$, OP::OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 422: }
423: ;
1.149 parser 424: construct_round: '(' expr_value ')' {
1.206 paf 425: $$=N();
1.229 misha 426: O(*$$, OP::OP_PREPARE_TO_EXPRESSION);
1.149 parser 427: // stack: context, name
1.206 paf 428: P(*$$, *$2); // stack: context, name, value
1.229 misha 429: O(*$$, OP::OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 430: }
1.52 paf 431: ;
1.149 parser 432: construct_curly: '{' maybe_codes '}' {
433: // stack: context, name
1.206 paf 434: $$=N();
1.229 misha 435: OA(*$$, OP::OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 436: };
437:
1.55 paf 438: any_constructor_code_value:
1.157 parser 439: void_value /* optimized $var[] case */
1.52 paf 440: | STRING /* optimized $var[STRING] case */
1.55 paf 441: | constructor_code_value /* $var[something complex] */
1.1 paf 442: ;
1.55 paf 443: constructor_code_value: constructor_code {
1.206 paf 444: $$=N();
1.229 misha 445: OA(*$$, OP::OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 446: /* some code that writes to that context */
447: /* context=pop; stack: context.value() */
1.1 paf 448: };
1.55 paf 449: constructor_code: codes__excluding_sole_str_literal;
1.206 paf 450: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 451:
1.1 paf 452: /* call */
453:
1.66 paf 454: call: call_value {
455: $$=$1; /* stack: value */
1.206 paf 456: changetail_or_append(*$$,
1.229 misha 457: OP::OP_CALL, true, /*->*/ OP::OP_CALL__WRITE,
458: /*or */OP::OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.66 paf 459: };
1.177 paf 460: call_value: '^' {
1.180 paf 461: PC.in_call_value=true;
1.177 paf 462: }
463: call_name {
1.180 paf 464: PC.in_call_value=false;
1.177 paf 465: }
1.154 parser 466: store_params EON { /* ^field.$method{vasya} */
467: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 468:
1.154 parser 469: YYSTYPE params_code=$5;
1.234 misha 470: if(params_code->count()==3) { // probably [] case. [OP::OP_VALUE+origin+Void]
1.206 paf 471: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.219 paf 472: if(value->is_void()) // value is VVoid?
1.123 paf 473: params_code=0; // ^zzz[] case. don't append lone empty param.
1.186 paf 474: }
475: /* stack: context, method_junction */
1.229 misha 476: OA(*$$, OP::OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
1.1 paf 477: };
478:
1.43 paf 479: call_name: name_without_curly_rdive;
1.38 paf 480:
1.206 paf 481: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2) };
1.69 paf 482: store_param:
483: store_square_param
484: | store_round_param
485: | store_curly_param
1.31 paf 486: ;
1.210 paf 487: store_square_param: '[' {
1.211 paf 488: // allow ^call[ letters here any time ]
1.210 paf 489: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
490: } store_code_param_parts {
1.213 paf 491: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.210 paf 492: } ']' {$$=$3};
1.69 paf 493: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 494: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 495: store_code_param_parts:
496: store_code_param_part
1.206 paf 497: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 498: ;
499: store_expr_param_parts:
500: store_expr_param_part
1.206 paf 501: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 502: ;
1.94 paf 503: store_curly_param_parts:
504: store_curly_param_part
1.206 paf 505: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3) }
1.94 paf 506: ;
1.120 paf 507: store_code_param_part: code_param_value {
1.32 paf 508: $$=$1;
1.120 paf 509: };
1.214 paf 510: store_expr_param_part: expr_value {
511: YYSTYPE expr_code=$1;
1.215 paf 512: if(expr_code->count()==3
1.234 misha 513: && (*expr_code)[0].code==OP::OP_VALUE) { // optimizing (double/bool/incidently 'string' too) case. [OP::OP_VALUE+origin+Double]. no evaluating
1.214 paf 514: $$=expr_code;
515: } else {
516: ArrayOperation* code=N();
1.229 misha 517: O(*code, OP::OP_PREPARE_TO_EXPRESSION);
1.214 paf 518: P(*code, *expr_code);
1.229 misha 519: O(*code, OP::OP_WRITE_EXPR_RESULT);
1.214 paf 520: $$=N();
1.229 misha 521: OA(*$$, OP::OP_EXPR_CODE__STORE_PARAM, code);
1.214 paf 522: }
1.69 paf 523: };
1.94 paf 524: store_curly_param_part: maybe_codes {
1.206 paf 525: $$=N();
1.229 misha 526: OA(*$$, OP::OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 527: };
1.120 paf 528: code_param_value:
1.157 parser 529: void_value /* optimized [;...] case */
1.120 paf 530: | STRING /* optimized [STRING] case */
531: | constructor_code_value /* [something complex] */
532: ;
1.1 paf 533:
534: /* name */
535:
1.206 paf 536: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 537:
1.206 paf 538: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 539: name_step: name_advance1 '.';
540: name_advance1: name_expr_value {
1.177 paf 541: // we know that name_advance1 not called from ^xxx context
542: // so we'll not check for operator call possibility as we do in name_advance2
543:
1.1 paf 544: /* stack: context */
545: $$=$1; /* stack: context,name */
1.229 misha 546: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 547: };
548: name_advance2: name_expr_value {
549: /* stack: context */
550: $$=$1; /* stack: context,name */
1.229 misha 551: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 552: }
1.4 paf 553: | STRING BOGUS
1.1 paf 554: ;
555: name_expr_value:
1.4 paf 556: STRING /* subname_is_const */
1.1 paf 557: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 558: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 559: | name_square_code_value /* [codes] */
1.1 paf 560: ;
561: name_expr_subvar_value: '$' subvar_ref_name_rdive {
562: $$=$2;
1.229 misha 563: O(*$$, OP::OP_GET_ELEMENT);
1.1 paf 564: };
1.4 paf 565: name_expr_with_subvar_value: STRING subvar_get_writes {
1.206 paf 566: ArrayOperation* code;
1.183 paf 567: {
1.206 paf 568: change_string_literal_to_write_string_literal(*(code=$1));
569: P(*code, *$2);
1.183 paf 570: }
1.206 paf 571: $$=N();
1.229 misha 572: OA(*$$, OP::OP_STRING_POOL, code);
1.1 paf 573: };
1.212 paf 574: name_square_code_value: '[' {
575: // allow $result_or_other_variable[ letters here any time ]
576: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
577: } codes {
1.213 paf 578: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.212 paf 579: } ']' {
1.206 paf 580: $$=N();
1.229 misha 581: OA(*$$, OP::OP_OBJECT_POOL, $3); /* stack: empty write context */
1.183 paf 582: /* some code that writes to that context */
583: /* context=pop; stack: context.value() */
1.160 parser 584: };
1.154 parser 585: subvar_ref_name_rdive: STRING {
1.206 paf 586: $$=N();
1.229 misha 587: O(*$$, OP::OP_WITH_READ);
1.206 paf 588: P(*$$, *$1);
1.1 paf 589: };
1.206 paf 590: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 591: subvar__get_write: '$' subvar_ref_name_rdive {
592: $$=$2;
1.229 misha 593: O(*$$, OP::OP_GET_ELEMENT__WRITE);
1.42 paf 594: };
595:
1.154 parser 596: class_prefix:
597: class_static_prefix
598: | class_constructor_prefix
599: ;
1.155 parser 600: class_static_prefix: STRING ':' {
601: $$=$1; // stack: class name string
1.206 paf 602: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
603: if(VStateless_class* base=PC.cclass->base_class()) {
604: change_string_literal_value(*$$, base->name());
1.189 paf 605: } else {
606: strcpy(PC.error, "no base class declared");
607: YYERROR;
608: }
609: }
1.233 misha 610: #ifdef OPTIMIZE_BYTECODE_GET_CLASS
611: // OP_VALUE+origin+string+OP_GET_CLASS -> OP_VALUE__GET_CLASS+origin+string
612: replace_top_opcode(*$$, OP::OP_VALUE, OP::OP_VALUE__GET_CLASS, true/*assert if top opcode != OP_VALUE*/)
613: #else
1.229 misha 614: O(*$$, OP::OP_GET_CLASS);
1.233 misha 615: #endif
1.155 parser 616: };
617: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 618: $$=$1;
1.180 paf 619: if(!PC.in_call_value) {
1.154 parser 620: strcpy(PC.error, ":: not allowed here");
621: YYERROR;
622: }
1.229 misha 623: O(*$$, OP::OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 624: };
625:
1.53 paf 626:
1.56 paf 627: /* expr */
1.53 paf 628:
1.214 paf 629: expr_value: expr;
1.56 paf 630: expr:
1.214 paf 631: double_or_STRING
1.216 paf 632: | true_value
633: | false_value
1.64 paf 634: | get_value
1.66 paf 635: | call_value
1.216 paf 636: | '"' string_inside_quotes_value '"' { $$ = $2 }
637: | '\'' string_inside_quotes_value '\'' { $$ = $2 }
1.60 paf 638: | '(' expr ')' { $$ = $2; }
639: /* stack: operand // stack: @operand */
1.229 misha 640: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP::OP_NEG) }
1.202 paf 641: | '+' expr %prec NUNARY { $$=$2 }
1.229 misha 642: | '~' expr { $$=$2; O(*$$, OP::OP_INV) }
643: | '!' expr { $$=$2; O(*$$, OP::OP_NOT) }
644: | "def" expr { $$=$2; O(*$$, OP::OP_DEF) }
645: | "in" expr { $$=$2; O(*$$, OP::OP_IN) }
646: | "-f" expr { $$=$2; O(*$$, OP::OP_FEXISTS) }
647: | "-d" expr { $$=$2; O(*$$, OP::OP_DEXISTS) }
1.60 paf 648: /* stack: a,b // stack: a@b */
1.229 misha 649: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_SUB) }
650: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_ADD) }
651: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MUL) }
652: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_DIV) }
653: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MOD) }
654: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_INTDIV) }
655: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SL) }
656: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SR) }
657: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_AND) }
658: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_OR) }
659: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_XOR) }
660: | expr "&&" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_AND) }
661: | expr "||" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_OR) }
662: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_LOG_XOR) }
663: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LT) }
664: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GT) }
665: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LE) }
666: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GE) }
667: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_EQ) }
668: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_NE) }
669: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LT) }
670: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GT) }
671: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LE) }
672: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GE) }
673: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_EQ) }
674: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_NE) }
675: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_IS) }
1.56 paf 676: ;
1.214 paf 677:
678: double_or_STRING: STRING {
679: // optimized from OP_STRING->OP_VALUE for doubles
680: maybe_change_string_literal_to_double_literal(*($$=$1));
681: };
1.55 paf 682:
1.65 paf 683: string_inside_quotes_value: maybe_codes {
1.206 paf 684: $$=N();
1.229 misha 685: OA(*$$, OP::OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 686: /* some code that writes to that context */
687: /* context=pop; stack: context.get_string() */
1.53 paf 688: };
1.1 paf 689:
1.27 paf 690: /* basics */
1.1 paf 691:
1.81 paf 692: write_string: STRING {
1.209 paf 693: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
694: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 695: };
696:
1.216 paf 697: void_value: /* empty */ { $$=VL(/*we know that we will not change it*/const_cast<VVoid*>(&vvoid), 0, 0, 0) }
698: true_value: "true" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vtrue), 0, 0, 0) }
699: false_value: "false" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vfalse), 0, 0, 0) }
700:
1.206 paf 701: empty: /* empty */ { $$=N() };
1.1 paf 702:
703: %%
1.105 paf 704: #endif
1.1 paf 705:
706: /*
707: 000$111(2222)00
708: 000$111{3333}00
1.9 paf 709: $,^: push,=0
1.1 paf 710: 1:( { break=pop
711: 2:( ) pop
712: 3:{ } pop
713:
714: 000^111(2222)4444{33333}4000
1.9 paf 715: $,^: push,=0
1.1 paf 716: 1:( { break=pop
717: 2:( )=4
718: 3:{ }=4
719: 4:[^({]=pop
720: */
721:
1.206 paf 722: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
723: pc.source--;
724: if(pc.pos.col==0) {
725: --pc.pos.line; pc.pos.col=last_line_end_col;
726: } else
727: --pc.pos.col;
728:
729: }
730: static int yylex(YYSTYPE *lvalp, void *apc) {
731: register Parse_control& pc=*static_cast<Parse_control*>(apc);
732:
733: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 734: #define RC {result=c; goto break2; }
1.1 paf 735:
1.206 paf 736: register int c;
737: int result;
1.1 paf 738:
1.206 paf 739: if(pc.pending_state) {
740: result=pc.pending_state;
741: pc.pending_state=0;
1.1 paf 742: return result;
743: }
744:
1.206 paf 745: const char *begin=pc.source;
746: Pos begin_pos=pc.pos;
1.91 paf 747: const char *end;
1.67 paf 748: int skip_analized=0;
1.50 paf 749: while(true) {
1.206 paf 750: c=*(end=(pc.source++));
751: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 752:
1.208 paf 753: if(c=='\n')
1.206 paf 754: pc.pos_next_line();
1.208 paf 755: else
1.206 paf 756: pc.pos_next_c(c);
1.208 paf 757: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 758:
1.208 paf 759: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 760: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 761: // @SPECIAL
762: // ...
763: // @<here =
1.206 paf 764: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 765: } // continuing checks
1.206 paf 766: if(pc.ls==LS_USER) {
767: push_LS(pc, LS_DEF_NAME);
1.171 parser 768: RC;
1.175 paf 769: } else // @ in first column inside some code [when could that be?]
1.171 parser 770: result=BAD_METHOD_DECL_START;
771: goto break2;
1.209 paf 772: }
773: if(c=='^') {
1.206 paf 774: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 775: // handle after-method situation
1.206 paf 776: pop_LS(pc);
1.203 paf 777: result=EON;
778: skip_analized=-1; // return to punctuation afterwards to assure it's literality
779: goto break2;
780: }
1.206 paf 781: switch(pc.ls) {
1.169 parser 782: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
783: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
784: case LS_VAR_NAME_SIMPLE_WITH_COLON:
785: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
786: case LS_VAR_NAME_CURLY:
787: case LS_METHOD_NAME:
1.194 paf 788: case LS_USER_COMMENT:
1.169 parser 789: case LS_DEF_COMMENT:
790: // no literals in names, please
791: break;
792: default:
1.206 paf 793: switch(*pc.source) {
1.165 parser 794: // ^escaping some punctuators
1.228 misha 795: case '^': case '$': case ';': case '@':
1.126 paf 796: case '(': case ')':
1.48 paf 797: case '[': case ']':
798: case '{': case '}':
1.172 parser 799: case '"': case ':':
1.40 paf 800: if(end!=begin) {
1.206 paf 801: if(!pc.string_start)
802: pc.string_start=begin_pos;
1.40 paf 803: // append piece till ^
1.206 paf 804: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 805: }
1.63 paf 806: // reset piece 'begin' position & line
1.206 paf 807: begin=pc.source; // ->punctuation
808: begin_pos=pc.pos;
1.203 paf 809: // skip over _ after ^
1.206 paf 810: pc.source++; pc.pos.col++;
1.203 paf 811: // skip analysis = forced literal
812: continue;
1.114 paf 813:
814: // converting ^#HH into char(hex(HH))
815: case '#':
816: if(end!=begin) {
1.206 paf 817: if(!pc.string_start)
818: pc.string_start=begin_pos;
1.114 paf 819: // append piece till ^
1.206 paf 820: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 821: }
822: // #HH ?
1.228 misha 823: if(pc.source[1] && isxdigit(pc.source[1]) && pc.source[2] && isxdigit(pc.source[2])) {
1.218 paf 824: char c=(char)(
1.206 paf 825: hex_value[(unsigned char)pc.source[1]]*0x10+
1.218 paf 826: hex_value[(unsigned char)pc.source[2]]);
1.206 paf 827: if(c==0) {
1.114 paf 828: result=BAD_HEX_LITERAL;
829: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
830: }
831: // append char(hex(HH))
1.206 paf 832: pc.string.append(c);
1.114 paf 833: // skip over ^#HH
1.206 paf 834: pc.source+=3;
835: pc.pos.col+=3;
1.114 paf 836: // reset piece 'begin' position & line
1.206 paf 837: begin=pc.source; // ->after ^#HH
838: begin_pos=pc.pos;
1.203 paf 839: // skip analysis = forced literal
1.114 paf 840: continue;
841: }
1.228 misha 842: // just escaped char
843: // reset piece 'begin' position & line
844: begin=pc.source;
845: begin_pos=pc.pos;
846: // skip over _ after ^
847: pc.source++; pc.pos.col++;
848: // skip analysis = forced literal
849: continue;
1.1 paf 850: }
1.169 parser 851: break;
1.203 paf 852: }
1.169 parser 853: }
1.113 paf 854: // #comment start skipping
1.206 paf 855: if(c=='#' && pc.pos.col==1) {
1.112 paf 856: if(end!=begin) {
1.206 paf 857: if(!pc.string_start)
858: pc.string_start=begin_pos;
1.112 paf 859: // append piece till #
1.206 paf 860: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 861: }
862: // fall into COMMENT lexical state [wait for \n]
1.206 paf 863: push_LS(pc, LS_USER_COMMENT);
1.175 paf 864: continue;
1.112 paf 865: }
1.206 paf 866: switch(pc.ls) {
1.10 paf 867:
868: // USER'S = NOT OURS
1.1 paf 869: case LS_USER:
1.206 paf 870: case LS_NAME_SQUARE_PART: // name.[here].xxx
871: if(pc.trim_bof)
1.153 parser 872: switch(c) {
873: case '\n': case ' ': case '\t':
1.206 paf 874: begin=pc.source;
875: begin_pos=pc.pos;
1.152 parser 876: continue; // skip it
1.153 parser 877: default:
1.206 paf 878: pc.trim_bof=false;
1.152 parser 879: }
1.48 paf 880: switch(c) {
881: case '$':
1.206 paf 882: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 883: RC;
884: case '^':
1.206 paf 885: push_LS(pc, LS_METHOD_NAME);
1.48 paf 886: RC;
1.166 parser 887: case ']':
1.206 paf 888: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 889: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 890: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 891: RC;
892: }
1.160 parser 893: break;
1.166 parser 894: case '[': // $name.[co<[>de]
1.206 paf 895: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 896: lexical_brackets_nestage++;
1.161 parser 897: break;
1.112 paf 898: }
1.209 paf 899: if(pc.explicit_result && c)
900: switch(c) {
901: case '\n': case ' ': case '\t':
902: begin=pc.source;
903: begin_pos=pc.pos;
904: continue; // skip it
905: default:
906: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
907: goto break2;
908: }
1.112 paf 909: break;
910:
911: // #COMMENT
1.194 paf 912: case LS_USER_COMMENT:
1.112 paf 913: if(c=='\n') {
914: // skip comment
1.206 paf 915: begin=pc.source;
916: begin_pos=pc.pos;
1.112 paf 917:
1.206 paf 918: pop_LS(pc);
1.112 paf 919: continue;
1.1 paf 920: }
1.48 paf 921: break;
922:
923: // STRING IN EXPRESSION
1.145 parser 924: case LS_EXPRESSION_STRING_QUOTED:
925: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 926: switch(c) {
927: case '"':
1.145 parser 928: case '\'':
929: if(
1.206 paf 930: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
931: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
932: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 933: RC;
934: }
935: break;
1.48 paf 936: case '$':
1.206 paf 937: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 938: RC;
939: case '^':
1.206 paf 940: push_LS(pc, LS_METHOD_NAME);
1.48 paf 941: RC;
1.10 paf 942: }
943: break;
944:
945: // METHOD DEFINITION
946: case LS_DEF_NAME:
1.48 paf 947: switch(c) {
948: case '[':
1.206 paf 949: pc.ls=LS_DEF_PARAMS;
1.48 paf 950: RC;
951: case '\n':
1.206 paf 952: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 953: RC;
1.10 paf 954: }
955: break;
1.48 paf 956:
1.10 paf 957: case LS_DEF_PARAMS:
1.48 paf 958: switch(c) {
1.192 paf 959: case '$': // common error
1.193 paf 960: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
961: goto break2;
1.48 paf 962: case ';':
963: RC;
964: case ']':
1.206 paf 965: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 966: RC;
1.49 paf 967: case '\n': // wrong. bailing out
1.206 paf 968: pop_LS(pc);
1.48 paf 969: RC;
1.10 paf 970: }
971: break;
1.48 paf 972:
1.10 paf 973: case LS_DEF_LOCALS:
1.48 paf 974: switch(c) {
975: case '[':
976: case ';':
977: RC;
978: case ']':
1.206 paf 979: pc.ls=LS_DEF_COMMENT;
1.48 paf 980: RC;
981: case '\n': // wrong. bailing out
1.206 paf 982: pop_LS(pc);
1.48 paf 983: RC;
1.10 paf 984: }
985: break;
1.48 paf 986:
1.10 paf 987: case LS_DEF_COMMENT:
988: if(c=='\n') {
1.206 paf 989: pop_LS(pc);
1.48 paf 990: RC;
1.37 paf 991: }
992: break;
993:
1.48 paf 994: case LS_DEF_SPECIAL_BODY:
1.175 paf 995: if(c=='\n')
1.48 paf 996: RC;
997: break;
998:
999: // (EXPRESSION)
1.69 paf 1000: case LS_VAR_ROUND:
1001: case LS_METHOD_ROUND:
1.48 paf 1002: switch(c) {
1003: case ')':
1004: if(--lexical_brackets_nestage==0)
1.206 paf 1005: if(pc.ls==LS_METHOD_ROUND) // method round param ended
1006: pc.ls=LS_METHOD_AFTER; // look for method end
1007: else // pc.ls==LS_VAR_ROUND // variable constructor ended
1008: pop_LS(pc); // return to normal life
1.48 paf 1009: RC;
1.194 paf 1010: case '#': // comment start skipping
1011: if(end!=begin) {
1.206 paf 1012: if(!pc.string_start)
1013: pc.string_start=begin_pos;
1.194 paf 1014: // append piece till #
1.206 paf 1015: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 1016: }
1017: // fall into COMMENT lexical state [wait for \n]
1.206 paf 1018: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 1019: lexical_brackets_nestage=1;
1020: continue;
1.48 paf 1021: case '$':
1.206 paf 1022: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 1023: RC;
1024: case '^':
1.206 paf 1025: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1026: RC;
1027: case '(':
1028: lexical_brackets_nestage++;
1029: RC;
1.67 paf 1030: case '-':
1.206 paf 1031: switch(*pc.source) {
1.127 paf 1032: case 'f': // -f
1.67 paf 1033: skip_analized=1;
1034: result=FEXISTS;
1.127 paf 1035: goto break2;
1036: case 'd': // -d
1037: skip_analized=1;
1038: result=DEXISTS;
1039: goto break2;
1.191 paf 1040: default: // minus
1.67 paf 1041: result=c;
1.127 paf 1042: goto break2;
1043: }
1.67 paf 1044: goto break2;
1.173 paf 1045: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 1046: case '~':
1.48 paf 1047: case ';':
1048: RC;
1.193 paf 1049: case '&': case '|':
1.206 paf 1050: if(*pc.source==c) { // && ||
1.193 paf 1051: result=c=='&'?LAND:LOR;
1.67 paf 1052: skip_analized=1;
1.58 paf 1053: } else
1054: result=c;
1055: goto break2;
1.193 paf 1056: case '!':
1.206 paf 1057: switch(pc.source[0]) {
1.193 paf 1058: case '|': // !| !||
1059: skip_analized=1;
1.206 paf 1060: if(pc.source[1]=='|') {
1.193 paf 1061: skip_analized++;
1062: result=LXOR;
1063: } else
1064: result=NXOR;
1065: goto break2;
1066: case '=': // !=
1067: skip_analized=1;
1068: result=NNE;
1069: goto break2;
1070: }
1071: RC;
1.195 paf 1072:
1073: case '<': // <<, <=, <
1.206 paf 1074: switch(*pc.source) {
1.195 paf 1075: case '<': // <[<]
1076: skip_analized=1; result=NSL; break;
1077: case '=': // <[=]
1078: skip_analized=1; result=NLE; break;
1079: default: // <[]
1080: result=c; break;
1081: }
1082: goto break2;
1083: case '>': // >>, >=, >
1.206 paf 1084: switch(*pc.source) {
1.195 paf 1085: case '>': // >[>]
1086: skip_analized=1; result=NSR; break;
1087: case '=': // >[=]
1088: skip_analized=1; result=NGE; break;
1089: default: // >[]
1090: result=c; break;
1091: }
1092: goto break2;
1093: case '=': // ==
1.206 paf 1094: switch(*pc.source) {
1.195 paf 1095: case '=': // =[=]
1096: skip_analized=1; result=NEQ; break;
1097: default: // =[]
1098: result=c; break; // not used now
1099: }
1.58 paf 1100: goto break2;
1.195 paf 1101:
1.48 paf 1102: case '"':
1.206 paf 1103: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1104: RC;
1105: case '\'':
1.206 paf 1106: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1107: RC;
1.50 paf 1108: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1109: if(end==begin) // right after whitespace
1.206 paf 1110: if(isspace(pc.source[1])) {
1111: switch(*pc.source) {
1.117 paf 1112: // case '?': // ok [and bad cases, yacc would bark at them]
1113: case 't': // lt gt [et nt]
1114: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1115: skip_analized=1;
1116: goto break2;
1117: case 'e': // le ge ne [ee]
1118: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1119: skip_analized=1;
1120: goto break2;
1121: case 'q': // eq [lq gq nq]
1122: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1123: skip_analized=1;
1124: goto break2;
1125: }
1.67 paf 1126: }
1127: break;
1128: case 'i':
1129: if(end==begin) // right after whitespace
1.206 paf 1130: if(isspace(pc.source[1])) {
1131: switch(pc.source[0]) {
1.117 paf 1132: case 'n': // in
1.95 paf 1133: skip_analized=1;
1134: result=IN;
1135: goto break2;
1.117 paf 1136: case 's': // is
1.95 paf 1137: skip_analized=1;
1138: result=IS;
1139: goto break2;
1140: }
1.67 paf 1141: }
1142: break;
1143: case 'd':
1144: if(end==begin) // right after whitespace
1.206 paf 1145: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.225 misha 1146: switch(pc.source[2]){
1147: case ' ': case '\t': case '\n': case '"': case '\'': case '^': case '$': // non-quoted string without whitespace after 'def' is not allowed
1148: skip_analized=2;
1149: result=DEF;
1150: goto break2;
1151: }
1152: // error: incorrect char after 'def'
1.50 paf 1153: }
1.48 paf 1154: break;
1.216 paf 1155: case 't':
1156: if(end==begin) // right after whitespace
1.225 misha 1157: if(pc.source[0]=='r' && pc.source[1]=='u' && pc.source[2]=='e') { // true
1.216 paf 1158: skip_analized=3;
1159: result=LITERAL_TRUE;
1160: goto break2;
1161: }
1162: break;
1163: case 'f':
1164: if(end==begin) // right after whitespace
1.225 misha 1165: if(pc.source[0]=='a' && pc.source[1]=='l' && pc.source[2]=='s' && pc.source[3]=='e') { // false
1.216 paf 1166: skip_analized=4;
1167: result=LITERAL_FALSE;
1168: goto break2;
1169: }
1170: break;
1.48 paf 1171: case ' ': case '\t': case '\n':
1.63 paf 1172: if(end!=begin) { // there were a string after previous operator?
1173: result=0; // return that string
1174: goto break2;
1.48 paf 1175: }
1.63 paf 1176: // that's a leading|traling space or after-operator-space
1177: // ignoring it
1178: // reset piece 'begin' position & line
1.206 paf 1179: begin=pc.source; // after whitespace char
1180: begin_pos=pc.pos;
1.48 paf 1181: continue;
1.1 paf 1182: }
1183: break;
1.194 paf 1184: case LS_EXPRESSION_COMMENT:
1185: if(c=='(')
1186: lexical_brackets_nestage++;
1187:
1.206 paf 1188: switch(*pc.source) {
1.194 paf 1189: case '\n': case ')':
1.206 paf 1190: if(*pc.source==')')
1.194 paf 1191: if(--lexical_brackets_nestage!=0)
1192: continue;
1193:
1194: // skip comment
1.206 paf 1195: begin=pc.source;
1196: begin_pos=pc.pos;
1.194 paf 1197:
1.206 paf 1198: pop_LS(pc);
1.194 paf 1199: continue;
1200: }
1201: break;
1.1 paf 1202:
1.10 paf 1203: // VARIABLE GET/PUT/WITH
1.166 parser 1204: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1205: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1206: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1207: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1208: if(
1.206 paf 1209: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1210: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1211: // name in expr ends also before
1.48 paf 1212: switch(c) {
1.181 paf 1213: // expression minus
1.92 paf 1214: case '-':
1.181 paf 1215: // expression integer division
1216: case '\\':
1.206 paf 1217: pop_LS(pc);
1218: pc.ungetc();
1.48 paf 1219: result=EON;
1220: goto break2;
1221: }
1222: }
1.166 parser 1223: if(
1.206 paf 1224: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1225: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1226: // name already has ':', stop before next
1227: switch(c) {
1228: case ':':
1.206 paf 1229: pop_LS(pc);
1230: pc.ungetc();
1.142 parser 1231: result=EON;
1232: goto break2;
1233: }
1234: }
1.48 paf 1235: switch(c) {
1236: case 0:
1237: case ' ': case '\t': case '\n':
1238: case ';':
1.126 paf 1239: case ']': case '}': case ')':
1240: case '"': case '\'':
1.139 parser 1241: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1242: case '+': case '*': case '/': case '%':
1243: case '&': case '|':
1244: case '=': case '!':
1.99 paf 1245: // common delimiters
1.190 paf 1246: case ',': case '?': case '#':
1.220 paf 1247: // mysql column separators
1248: case '`':
1.139 parser 1249: // before call
1250: case '^':
1.206 paf 1251: pop_LS(pc);
1252: pc.ungetc();
1.13 paf 1253: result=EON;
1.1 paf 1254: goto break2;
1.48 paf 1255: case '[':
1.162 parser 1256: // $name.<[>code]
1.206 paf 1257: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1258: end[-1]=='$'/*was start of get*/ ||
1259: end[-1]==':'/*was class name delim */ ||
1260: end[-1]=='.'/*was name delim */
1.162 parser 1261: )) {
1.206 paf 1262: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1263: lexical_brackets_nestage=1;
1264: RC;
1265: }
1.206 paf 1266: pc.ls=LS_VAR_SQUARE;
1.1 paf 1267: lexical_brackets_nestage=1;
1.48 paf 1268: RC;
1269: case '{':
1270: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1271: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1272: } else {
1.206 paf 1273: pc.ls=LS_VAR_CURLY;
1.48 paf 1274: lexical_brackets_nestage=1;
1275: }
1.69 paf 1276:
1.48 paf 1277: RC;
1278: case '(':
1.206 paf 1279: pc.ls=LS_VAR_ROUND;
1.1 paf 1280: lexical_brackets_nestage=1;
1.48 paf 1281: RC;
1282: case '.': // name part delim
1283: case '$': // name part subvar
1.160 parser 1284: case ':': // class<:>name
1.166 parser 1285: // go to _WITHOUT_COLON state variant...
1.206 paf 1286: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1287: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1288: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1289: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1290: // ...stop before next ':'
1.48 paf 1291: RC;
1.1 paf 1292: }
1293: break;
1.48 paf 1294:
1.1 paf 1295: case LS_VAR_NAME_CURLY:
1.48 paf 1296: switch(c) {
1.162 parser 1297: case '[':
1.166 parser 1298: // ${name.<[>code]}
1.206 paf 1299: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1300: lexical_brackets_nestage=1;
1301: RC;
1.48 paf 1302: case '}': // ${name} finished, restoring LS
1.206 paf 1303: pop_LS(pc);
1.48 paf 1304: RC;
1305: case '.': // name part delim
1306: case '$': // name part subvar
1307: case ':': // ':name' or 'class:name'
1308: RC;
1.1 paf 1309: }
1310: break;
1.48 paf 1311:
1312: case LS_VAR_SQUARE:
1313: switch(c) {
1314: case '$':
1.206 paf 1315: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1316: RC;
1317: case '^':
1.206 paf 1318: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1319: RC;
1320: case ']':
1.1 paf 1321: if(--lexical_brackets_nestage==0) {
1.206 paf 1322: pop_LS(pc);
1.48 paf 1323: RC;
1.1 paf 1324: }
1.48 paf 1325: break;
1326: case ';': // operator_or_fmt;value delim
1327: RC;
1328: case '[':
1329: lexical_brackets_nestage++;
1330: break;
1.1 paf 1331: }
1332: break;
1.48 paf 1333:
1.1 paf 1334: case LS_VAR_CURLY:
1.48 paf 1335: switch(c) {
1336: case '$':
1.206 paf 1337: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1338: RC;
1339: case '^':
1.206 paf 1340: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1341: RC;
1342: case '}':
1.1 paf 1343: if(--lexical_brackets_nestage==0) {
1.206 paf 1344: pop_LS(pc);
1.48 paf 1345: RC;
1.1 paf 1346: }
1.48 paf 1347: break;
1348: case '{':
1.1 paf 1349: lexical_brackets_nestage++;
1.48 paf 1350: break;
1351: }
1.1 paf 1352: break;
1353:
1.10 paf 1354: // METHOD CALL
1.1 paf 1355: case LS_METHOD_NAME:
1.48 paf 1356: switch(c) {
1357: case '[':
1.166 parser 1358: // ^name.<[>code].xxx
1.206 paf 1359: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1360: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1361: end[-1]==':'/*was class name delim */ ||
1362: end[-1]=='.'/*was name delim */
1.162 parser 1363: )) {
1.206 paf 1364: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1365: lexical_brackets_nestage=1;
1366: RC;
1367: }
1.206 paf 1368: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1369: lexical_brackets_nestage=1;
1.48 paf 1370: RC;
1371: case '{':
1.206 paf 1372: pc.ls=LS_METHOD_CURLY;
1.1 paf 1373: lexical_brackets_nestage=1;
1.48 paf 1374: RC;
1.69 paf 1375: case '(':
1.206 paf 1376: pc.ls=LS_METHOD_ROUND;
1.69 paf 1377: lexical_brackets_nestage=1;
1378: RC;
1.48 paf 1379: case '.': // name part delim
1380: case '$': // name part subvar
1381: case ':': // ':name' or 'class:name'
1.170 parser 1382: case '^': // ^abc^xxx wrong. bailing out
1383: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1384: case ' ': // ^if ( wrong. bailing out
1.48 paf 1385: RC;
1.1 paf 1386: }
1387: break;
1.48 paf 1388:
1389: case LS_METHOD_SQUARE:
1390: switch(c) {
1391: case '$':
1.206 paf 1392: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1393: RC;
1394: case '^':
1.206 paf 1395: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1396: RC;
1397: case ';': // param delim
1398: RC;
1399: case ']':
1.1 paf 1400: if(--lexical_brackets_nestage==0) {
1.206 paf 1401: pc.ls=LS_METHOD_AFTER;
1.48 paf 1402: RC;
1.1 paf 1403: }
1.48 paf 1404: break;
1405: case '[':
1.1 paf 1406: lexical_brackets_nestage++;
1.48 paf 1407: break;
1408: }
1.1 paf 1409: break;
1.48 paf 1410:
1.1 paf 1411: case LS_METHOD_CURLY:
1.48 paf 1412: switch(c) {
1413: case '$':
1.206 paf 1414: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1415: RC;
1416: case '^':
1.206 paf 1417: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1418: RC;
1419: case ';': // param delim
1.48 paf 1420: RC;
1421: case '}':
1.1 paf 1422: if(--lexical_brackets_nestage==0) {
1.206 paf 1423: pc.ls=LS_METHOD_AFTER;
1.48 paf 1424: RC;
1.1 paf 1425: }
1.48 paf 1426: break;
1427: case '{':
1.1 paf 1428: lexical_brackets_nestage++;
1.48 paf 1429: break;
1430: }
1.209 paf 1431: if(pc.explicit_result && c)
1432: switch(c) {
1433: case '\n': case ' ': case '\t':
1434: begin=pc.source;
1435: begin_pos=pc.pos;
1436: continue; // skip it
1437: default:
1438: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
1439: goto break2;
1440: }
1.1 paf 1441: break;
1.48 paf 1442:
1.1 paf 1443: case LS_METHOD_AFTER:
1.69 paf 1444: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1445: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1446: lexical_brackets_nestage=1;
1.48 paf 1447: RC;
1.1 paf 1448: }
1.69 paf 1449: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1450: pc.ls=LS_METHOD_CURLY;
1.69 paf 1451: lexical_brackets_nestage=1;
1452: RC;
1453: }
1454: if(c=='(') {/* ]( }( )( */
1.206 paf 1455: pc.ls=LS_METHOD_ROUND;
1.1 paf 1456: lexical_brackets_nestage=1;
1.48 paf 1457: RC;
1.1 paf 1458: }
1.206 paf 1459: pop_LS(pc);
1460: pc.ungetc();
1.13 paf 1461: result=EON;
1.1 paf 1462: goto break2;
1463: }
1.9 paf 1464: if(c==0) {
1.1 paf 1465: result=-1;
1466: break;
1467: }
1468: }
1469:
1470: break2:
1.59 paf 1471: if(end!=begin) { // there is last piece?
1472: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1473: // strip last \n
1.10 paf 1474: end--;
1.137 parser 1475: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1476: end--;
1.59 paf 1477: }
1.206 paf 1478: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1479: if(!pc.string_start)
1480: pc.string_start=begin_pos;
1.59 paf 1481: // append it
1.206 paf 1482: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1483: }
1.59 paf 1484: }
1.206 paf 1485: if(!pc.string.is_empty()) { // something accumulated?
1486: // create STRING value: array of OP_VALUE+origin+vstring
1487: *lvalp=VL(
1488: new VString(*new String(pc.string, String::L_CLEAN)),
1489: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1490: // new pieces storage
1.206 paf 1491: pc.string.clear();
1492: pc.string_start.clear();
1.58 paf 1493: // make current result be pending for next call, return STRING for now
1.206 paf 1494: pc.pending_state=result; result=STRING;
1.58 paf 1495: }
1.67 paf 1496: if(skip_analized) {
1.206 paf 1497: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1498: }
1.58 paf 1499: return result;
1.1 paf 1500: }
1501:
1.206 paf 1502: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1503: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1504: return 1;
1.110 paf 1505: }
1.1 paf 1506:
1.110 paf 1507: static void yyprint(FILE *file, int type, YYSTYPE value) {
1508: if(type==STRING)
1.206 paf 1509: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1510: }
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