Annotation of parser3/src/main/compile.y, revision 1.224
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:
1.224 ! misha 8: $Id: compile.y,v 1.223 2008-05-30 12:27:44 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"
1.223 misha 44: #define OPTIONS_CONTROL_METHOD_NAME "OPTION"
1.1 paf 45:
1.206 paf 46: // forwards
47:
48: static int real_yyerror(Parse_control* pc, char* s);
49: static void yyprint(FILE* file, int type, YYSTYPE value);
50: static int yylex(YYSTYPE* lvalp, void* pc);
1.1 paf 51:
1.216 paf 52: static const VBool vfalse(false);
53: static const VBool vtrue(true);
54: static const VVoid vvoid;
55:
1.8 paf 56: // local convinient inplace typecast & var
1.205 paf 57: #undef PC
1.206 paf 58: #define PC (*(Parse_control *)pc)
59: #undef POOL
1.114 paf 60: #define POOL (*PC.pool)
1.107 paf 61: #ifndef DOXYGEN
1.1 paf 62: %}
63:
64: %pure_parser
65:
1.13 paf 66: %token EON
1.4 paf 67: %token STRING
1.1 paf 68: %token BOGUS
1.55 paf 69:
1.58 paf 70: %token BAD_STRING_COMPARISON_OPERATOR
1.114 paf 71: %token BAD_HEX_LITERAL
1.171 parser 72: %token BAD_METHOD_DECL_START
1.193 paf 73: %token BAD_METHOD_PARAMETER_NAME_CHARACTER
1.209 paf 74: %token BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE
1.58 paf 75:
1.59 paf 76: %token LAND "&&"
1.58 paf 77: %token LOR "||"
1.193 paf 78: %token LXOR "!||"
79: %token NXOR "!|"
1.58 paf 80:
81: %token NLE "<="
82: %token NGE ">="
83: %token NEQ "=="
84: %token NNE "!="
1.195 paf 85: %token NSL "<<"
86: %token NSR ">>"
1.58 paf 87:
88: %token SLT "lt"
89: %token SGT "gt"
90: %token SLE "le"
91: %token SGE "ge"
92: %token SEQ "eq"
93: %token SNE "ne"
94:
1.67 paf 95: %token DEF "def"
96: %token IN "in"
97: %token FEXISTS "-f"
1.127 paf 98: %token DEXISTS "-d"
1.95 paf 99: %token IS "is"
1.67 paf 100:
1.216 paf 101: %token LITERAL_TRUE "true"
102: %token LITERAL_FALSE "false"
103:
1.57 paf 104: /* logical */
1.193 paf 105: %left "!||"
1.57 paf 106: %left "||"
107: %left "&&"
1.131 paf 108: %left '<' '>' "<=" ">=" "lt" "gt" "le" "ge"
109: %left "==" "!=" "eq" "ne"
110: %left "is" "def" "in" "-f" "-d"
1.57 paf 111:
112: /* bitwise */
1.193 paf 113: %left "!|"
1.131 paf 114: %left '|'
115: %left '&'
1.202 paf 116: %left "<<" ">>"
1.57 paf 117:
1.56 paf 118: /* numerical */
1.202 paf 119: %left '+' '-'
120: %left '*' '/' '\\' '%'
121: %left NUNARY /* unary - + */
122:
123: /* out-of-group */
124: %left '~' /* bitwise */
125: %left '!' /* logical */
1.1 paf 126:
127: %%
1.195 paf 128: all:
1.10 paf 129: one_big_piece {
1.206 paf 130: Method& method=*new Method(Method::CT_ANY,
1.81 paf 131: 0, 0, /*min, max numbered_params_count*/
1.75 paf 132: 0/*param_names*/, 0/*local_names*/,
133: $1/*parser_code*/, 0/*native_code*/);
1.206 paf 134: PC.cclass->add_method(PC.alias_method(main_method_name), method);
1.10 paf 135: }
136: | methods;
137:
138: methods: method | methods method;
139: one_big_piece: maybe_codes;
140:
1.34 paf 141: method: control_method | code_method;
142:
143: control_method: '@' STRING '\n'
1.132 paf 144: maybe_control_strings {
1.206 paf 145: const String& command=*LA2S(*$2);
1.34 paf 146: YYSTYPE strings_code=$4;
1.206 paf 147: if(strings_code->count()<1*OPERATIONS_PER_OPVALUE) {
1.114 paf 148: strcpy(PC.error, "@");
149: strcat(PC.error, command.cstr());
150: strcat(PC.error, " is empty");
1.37 paf 151: YYERROR;
152: }
1.74 paf 153: if(command==CLASS_NAME) {
1.224 ! misha 154: /*
1.188 paf 155: if(PC.cclass->base_class()) { // already changed from default?
1.114 paf 156: strcpy(PC.error, "class already have a name '");
157: strncat(PC.error, PC.cclass->name().cstr(), 100);
158: strcat(PC.error, "'");
1.73 paf 159: YYERROR;
160: }
1.224 ! misha 161: */
1.206 paf 162: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.73 paf 163: // new class' name
1.206 paf 164: const String& name=*LA2S(*strings_code);
1.73 paf 165: // creating the class
1.206 paf 166: VStateless_class* cclass=new VClass;
167: PC.cclass=cclass;
168: PC.cclass->set_name(name);
1.73 paf 169: // append to request's classes
1.206 paf 170: PC.request.classes().put(name, cclass);
1.224 ! misha 171: *PC.cclasses+=cclass;
1.73 paf 172: } else {
1.206 paf 173: strcpy(PC.error, "@"CLASS_NAME" must contain only one line with class name (contains more then one)");
1.34 paf 174: YYERROR;
175: }
1.130 paf 176: } else if(command==USE_CONTROL_METHOD_NAME) {
1.206 paf 177: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE)
178: PC.request.use_file(PC.request.main_class, *LA2S(*strings_code, i));
1.130 paf 179: } else if(command==BASE_NAME) {
1.188 paf 180: if(PC.cclass->base_class()) { // already changed from default?
1.130 paf 181: strcpy(PC.error, "class already have a base '");
1.188 paf 182: strncat(PC.error, PC.cclass->base_class()->name().cstr(), 100);
1.130 paf 183: strcat(PC.error, "'");
184: YYERROR;
185: }
1.206 paf 186: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
187: const String& base_name=*LA2S(*strings_code);
188: if(Value* base_class_value=PC.request.classes().get(base_name)) {
189: // @CLASS == @BASE sanity check
190: if(VStateless_class *base_class=base_class_value->get_class()) {
191: if(PC.cclass==base_class) {
192: strcpy(PC.error, "@"CLASS_NAME" equals @"BASE_NAME);
193: YYERROR;
194: }
195: PC.cclass->get_class()->set_base(base_class);
196: } else { // they asked to derive from a class without methods ['env' & co]
197: strcpy(PC.error, base_name.cstr());
198: strcat(PC.error, ": you can not derive from this class in @"BASE_NAME);
199: YYERROR;
200: }
201: } else {
1.130 paf 202: strcpy(PC.error, base_name.cstr());
203: strcat(PC.error, ": undefined class in @"BASE_NAME);
1.73 paf 204: YYERROR;
205: }
1.34 paf 206: } else {
1.130 paf 207: strcpy(PC.error, "@"BASE_NAME" must contain sole name");
1.34 paf 208: YYERROR;
209: }
1.223 misha 210: } else if(command==OPTIONS_CONTROL_METHOD_NAME) {
211: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE) {
212: const String& option=*LA2S(*strings_code, i);
213: if(option==ALL_VARS_LOCAL_NAME){
214: PC.cclass->all_vars_local();
215: } else {
216: strcpy(PC.error, option.cstr());
217: strcat(PC.error, ": unknown option in @"OPTIONS_CONTROL_METHOD_NAME" was specified.");
218: YYERROR;
219: }
220: }
1.130 paf 221: } else {
222: strcpy(PC.error, "'");
223: strncat(PC.error, command.cstr(), MAX_STRING/2);
224: strcat(PC.error, "' invalid special name. valid names are "
1.223 misha 225: "'"CLASS_NAME"', '"USE_CONTROL_METHOD_NAME"', '"BASE_NAME"' and '"OPTIONS_CONTROL_METHOD_NAME"'.");
1.130 paf 226: YYERROR;
1.34 paf 227: }
228: };
1.132 paf 229: maybe_control_strings: empty | control_strings;
1.206 paf 230: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2) };
1.37 paf 231: control_string: maybe_string '\n';
232: maybe_string: empty | STRING;
1.34 paf 233:
1.222 misha 234: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n' {
1.208 paf 235: PC.explicit_result=false;
1.10 paf 236:
237: YYSTYPE params_names_code=$3;
1.206 paf 238: ArrayString* params_names=0;
239: if(int size=params_names_code->count()) {
240: params_names=new ArrayString;
241: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
242: *params_names+=LA2S(*params_names_code, i);
1.75 paf 243: }
1.10 paf 244:
245: YYSTYPE locals_names_code=$4;
1.206 paf 246: ArrayString* locals_names=0;
1.223 misha 247: bool all_vars_local=false;
1.206 paf 248: if(int size=locals_names_code->count()) {
249: locals_names=new ArrayString;
1.208 paf 250: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE) {
251: const String* local_name=LA2S(*locals_names_code, i);
252: if(*local_name==RESULT_VAR_NAME)
253: PC.explicit_result=true;
1.223 misha 254: else if(*local_name==ALL_VARS_LOCAL_NAME)
255: all_vars_local=true;
1.208 paf 256: else
257: *locals_names+=local_name;
258: }
1.75 paf 259: }
1.223 misha 260: if(!all_vars_local && PC.cclass && PC.cclass->is_vars_local()){
261: all_vars_local=true;
262: }
1.10 paf 263:
1.208 paf 264: Method* method=new Method(
1.206 paf 265: //name,
1.122 paf 266: Method::CT_ANY,
1.81 paf 267: 0, 0/*min,max numbered_params_count*/,
1.76 paf 268: params_names, locals_names,
1.223 misha 269: 0/*to be filled later in next {} */, 0, all_vars_local);
1.221 misha 270:
1.208 paf 271: *reinterpret_cast<Method**>(&$$)=method;
272:
273: // todo: check [][;result;]
1.222 misha 274: } maybe_codes {
275: Method& method=*reinterpret_cast<Method*>($7);
276: // fill in the code
277: method.parser_code=$8;
278: // register in class
279: const String& name=*LA2S(*$2);
280: PC.cclass->add_method(PC.alias_method(name), method);
1.8 paf 281: };
1.10 paf 282:
283: maybe_bracketed_strings: empty | bracketed_maybe_strings;
284: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
285: maybe_strings: empty | strings;
1.206 paf 286: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3) };
1.10 paf 287:
288: maybe_comment: empty | STRING;
1.1 paf 289:
290: /* codes */
291:
1.10 paf 292: maybe_codes: empty | codes;
293:
1.206 paf 294: codes: code | codes code { $$=$1; P(*$$, *$2) };
1.81 paf 295: code: write_string | action;
1.209 paf 296: action: get | put | call;
1.1 paf 297:
298: /* get */
299:
1.64 paf 300: get: get_value {
1.184 paf 301: $$=$1; /* stack: resulting value */
1.206 paf 302: changetail_or_append(*$$,
1.186 paf 303: OP_GET_ELEMENT, false, /*->*/OP_GET_ELEMENT__WRITE,
304: /*or */OP_WRITE_VALUE
1.184 paf 305: ); /* value=pop; wcontext.write(value) */
1.1 paf 306: };
1.163 parser 307: get_value: '$' get_name_value { $$=$2 };
1.64 paf 308: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 309: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 310: name_without_curly_rdive:
311: name_without_curly_rdive_read
312: | name_without_curly_rdive_class;
1.19 paf 313: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 314: $$=N();
315: ArrayOperation* diving_code=$1;
316: const String* first_name=LA2S(*diving_code);
1.179 paf 317: // self.xxx... -> xxx...
1.206 paf 318: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 319: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.206 paf 320: O(*yyval, OP_WITH_SELF); /* stack: starting context */
321: P(*yyval, *diving_code,
1.22 paf 322: /* skip over... */
1.206 paf 323: diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.22 paf 324: } else {
1.206 paf 325: O(*yyval, OP_WITH_READ); /* stack: starting context */
1.179 paf 326:
1.201 paf 327: // ^if ELEMENT -> ^if ELEMENT_OR_OPERATOR
1.206 paf 328: // OP_VALUE+origin+string+OP_GET_ELEMENT. -> OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
329: if(PC.in_call_value && diving_code->count()==4)
330: diving_code->put(4-1, OP_GET_ELEMENT_OR_OPERATOR);
331: P(*$$, *diving_code);
1.22 paf 332: }
333: /* diving code; stack: current context */
1.1 paf 334: };
1.206 paf 335: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2) };
336: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2) };
1.1 paf 337:
338: /* put */
339:
1.81 paf 340: put: '$' name_expr_wdive construct {
1.20 paf 341: $$=$2; /* stack: context,name */
1.206 paf 342: P(*$$, *$3); /* stack: context,name,constructor_value */
1.20 paf 343: };
1.44 paf 344: name_expr_wdive:
1.157 parser 345: name_expr_wdive_root
346: | name_expr_wdive_write
1.44 paf 347: | name_expr_wdive_class;
1.157 parser 348: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 349: $$=N();
350: ArrayOperation* diving_code=$1;
351: const String* first_name=LA2S(*diving_code);
1.179 paf 352: // $self.xxx... -> $xxx...
1.206 paf 353: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 354: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.206 paf 355: O(*$$, OP_WITH_SELF); /* stack: starting context */
356: P(*$$, *diving_code,
1.23 paf 357: /* skip over... */
1.206 paf 358: diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.23 paf 359: } else {
1.206 paf 360: O(*$$, OP_WITH_ROOT); /* stack: starting context */
361: P(*$$, *diving_code);
1.23 paf 362: }
363: /* diving code; stack: current context */
1.156 parser 364: };
1.157 parser 365: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 366: $$=N();
367: O(*$$, OP_WITH_WRITE); /* stack: starting context */
368: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 369: };
1.206 paf 370: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2) };
1.20 paf 371:
1.149 parser 372: construct:
1.163 parser 373: construct_square
374: | construct_round
375: | construct_curly
1.149 parser 376: ;
1.211 paf 377: construct_square: '[' {
378: // allow $result_or_other_variable[ letters here any time ]
379: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
380: } any_constructor_code_value {
1.213 paf 381: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.211 paf 382: } ']' {
1.149 parser 383: // stack: context, name
1.211 paf 384: $$=$3; // stack: context, name, value
1.206 paf 385: O(*$$, OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 386: }
387: ;
1.149 parser 388: construct_round: '(' expr_value ')' {
1.206 paf 389: $$=N();
390: O(*$$, OP_PREPARE_TO_EXPRESSION);
1.149 parser 391: // stack: context, name
1.206 paf 392: P(*$$, *$2); // stack: context, name, value
393: O(*$$, OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 394: }
1.52 paf 395: ;
1.149 parser 396: construct_curly: '{' maybe_codes '}' {
397: // stack: context, name
1.206 paf 398: $$=N();
399: OA(*$$, OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 400: };
401:
1.55 paf 402: any_constructor_code_value:
1.157 parser 403: void_value /* optimized $var[] case */
1.52 paf 404: | STRING /* optimized $var[STRING] case */
1.55 paf 405: | constructor_code_value /* $var[something complex] */
1.1 paf 406: ;
1.55 paf 407: constructor_code_value: constructor_code {
1.206 paf 408: $$=N();
409: OA(*$$, OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 410: /* some code that writes to that context */
411: /* context=pop; stack: context.value() */
1.1 paf 412: };
1.55 paf 413: constructor_code: codes__excluding_sole_str_literal;
1.206 paf 414: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 415:
1.1 paf 416: /* call */
417:
1.66 paf 418: call: call_value {
419: $$=$1; /* stack: value */
1.206 paf 420: changetail_or_append(*$$,
1.186 paf 421: OP_CALL, true, /*->*/ OP_CALL__WRITE,
422: /*or */OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.66 paf 423: };
1.177 paf 424: call_value: '^' {
1.180 paf 425: PC.in_call_value=true;
1.177 paf 426: }
427: call_name {
1.180 paf 428: PC.in_call_value=false;
1.177 paf 429: }
1.154 parser 430: store_params EON { /* ^field.$method{vasya} */
431: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 432:
1.154 parser 433: YYSTYPE params_code=$5;
1.206 paf 434: if(params_code->count()==4) { // probably [] case. [OP_VALUE+origin+Void+STORE_PARAM]
435: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.219 paf 436: if(value->is_void()) // value is VVoid?
1.123 paf 437: params_code=0; // ^zzz[] case. don't append lone empty param.
1.186 paf 438: }
439: /* stack: context, method_junction */
1.206 paf 440: OA(*$$, OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
1.1 paf 441: };
442:
1.43 paf 443: call_name: name_without_curly_rdive;
1.38 paf 444:
1.206 paf 445: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2) };
1.69 paf 446: store_param:
447: store_square_param
448: | store_round_param
449: | store_curly_param
1.31 paf 450: ;
1.210 paf 451: store_square_param: '[' {
1.211 paf 452: // allow ^call[ letters here any time ]
1.210 paf 453: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
454: } store_code_param_parts {
1.213 paf 455: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.210 paf 456: } ']' {$$=$3};
1.69 paf 457: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 458: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 459: store_code_param_parts:
460: store_code_param_part
1.206 paf 461: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 462: ;
463: store_expr_param_parts:
464: store_expr_param_part
1.206 paf 465: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 466: ;
1.94 paf 467: store_curly_param_parts:
468: store_curly_param_part
1.206 paf 469: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3) }
1.94 paf 470: ;
1.120 paf 471: store_code_param_part: code_param_value {
1.32 paf 472: $$=$1;
1.206 paf 473: O(*$$, OP_STORE_PARAM);
1.120 paf 474: };
1.214 paf 475: store_expr_param_part: expr_value {
476: YYSTYPE expr_code=$1;
1.215 paf 477: if(expr_code->count()==3
1.216 paf 478: && (*expr_code)[0].code==OP_VALUE) { // optimizing (double/bool/incidently 'string' too) case. [OP_VALUE+origin+Double]
1.214 paf 479: $$=expr_code;
480: O(*$$, OP_STORE_PARAM); // no evaluating
481: } else {
482: ArrayOperation* code=N();
483: O(*code, OP_PREPARE_TO_EXPRESSION);
484: P(*code, *expr_code);
485: O(*code, OP_WRITE_EXPR_RESULT);
486: $$=N();
487: OA(*$$, OP_EXPR_CODE__STORE_PARAM, code);
488: }
1.69 paf 489: };
1.94 paf 490: store_curly_param_part: maybe_codes {
1.206 paf 491: $$=N();
492: OA(*$$, OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 493: };
1.120 paf 494: code_param_value:
1.157 parser 495: void_value /* optimized [;...] case */
1.120 paf 496: | STRING /* optimized [STRING] case */
497: | constructor_code_value /* [something complex] */
498: ;
1.1 paf 499:
500: /* name */
501:
1.206 paf 502: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 503:
1.206 paf 504: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 505: name_step: name_advance1 '.';
506: name_advance1: name_expr_value {
1.177 paf 507: // we know that name_advance1 not called from ^xxx context
508: // so we'll not check for operator call possibility as we do in name_advance2
509:
1.1 paf 510: /* stack: context */
511: $$=$1; /* stack: context,name */
1.206 paf 512: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 513: };
514: name_advance2: name_expr_value {
515: /* stack: context */
516: $$=$1; /* stack: context,name */
1.206 paf 517: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 518: }
1.4 paf 519: | STRING BOGUS
1.1 paf 520: ;
521: name_expr_value:
1.4 paf 522: STRING /* subname_is_const */
1.1 paf 523: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 524: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 525: | name_square_code_value /* [codes] */
1.1 paf 526: ;
527: name_expr_subvar_value: '$' subvar_ref_name_rdive {
528: $$=$2;
1.206 paf 529: O(*$$, OP_GET_ELEMENT);
1.1 paf 530: };
1.4 paf 531: name_expr_with_subvar_value: STRING subvar_get_writes {
1.206 paf 532: ArrayOperation* code;
1.183 paf 533: {
1.206 paf 534: change_string_literal_to_write_string_literal(*(code=$1));
535: P(*code, *$2);
1.183 paf 536: }
1.206 paf 537: $$=N();
538: OA(*$$, OP_STRING_POOL, code);
1.1 paf 539: };
1.212 paf 540: name_square_code_value: '[' {
541: // allow $result_or_other_variable[ letters here any time ]
542: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
543: } codes {
1.213 paf 544: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.212 paf 545: } ']' {
1.206 paf 546: $$=N();
1.212 paf 547: OA(*$$, OP_OBJECT_POOL, $3); /* stack: empty write context */
1.183 paf 548: /* some code that writes to that context */
549: /* context=pop; stack: context.value() */
1.160 parser 550: };
1.154 parser 551: subvar_ref_name_rdive: STRING {
1.206 paf 552: $$=N();
553: O(*$$, OP_WITH_READ);
554: P(*$$, *$1);
1.1 paf 555: };
1.206 paf 556: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 557: subvar__get_write: '$' subvar_ref_name_rdive {
558: $$=$2;
1.206 paf 559: O(*$$, OP_GET_ELEMENT__WRITE);
1.42 paf 560: };
561:
1.154 parser 562: class_prefix:
563: class_static_prefix
564: | class_constructor_prefix
565: ;
1.155 parser 566: class_static_prefix: STRING ':' {
567: $$=$1; // stack: class name string
1.206 paf 568: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
569: if(VStateless_class* base=PC.cclass->base_class()) {
570: change_string_literal_value(*$$, base->name());
1.189 paf 571: } else {
572: strcpy(PC.error, "no base class declared");
573: YYERROR;
574: }
575: }
1.206 paf 576: O(*$$, OP_GET_CLASS);
1.155 parser 577: };
578: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 579: $$=$1;
1.180 paf 580: if(!PC.in_call_value) {
1.154 parser 581: strcpy(PC.error, ":: not allowed here");
582: YYERROR;
583: }
1.206 paf 584: O(*$$, OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 585: };
586:
1.53 paf 587:
1.56 paf 588: /* expr */
1.53 paf 589:
1.214 paf 590: expr_value: expr;
1.56 paf 591: expr:
1.214 paf 592: double_or_STRING
1.216 paf 593: | true_value
594: | false_value
1.64 paf 595: | get_value
1.66 paf 596: | call_value
1.216 paf 597: | '"' string_inside_quotes_value '"' { $$ = $2 }
598: | '\'' string_inside_quotes_value '\'' { $$ = $2 }
1.60 paf 599: | '(' expr ')' { $$ = $2; }
600: /* stack: operand // stack: @operand */
1.206 paf 601: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP_NEG) }
1.202 paf 602: | '+' expr %prec NUNARY { $$=$2 }
1.206 paf 603: | '~' expr { $$=$2; O(*$$, OP_INV) }
604: | '!' expr { $$=$2; O(*$$, OP_NOT) }
605: | "def" expr { $$=$2; O(*$$, OP_DEF) }
606: | "in" expr { $$=$2; O(*$$, OP_IN) }
607: | "-f" expr { $$=$2; O(*$$, OP_FEXISTS) }
608: | "-d" expr { $$=$2; O(*$$, OP_DEXISTS) }
1.60 paf 609: /* stack: a,b // stack: a@b */
1.206 paf 610: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP_SUB) }
611: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP_ADD) }
612: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MUL) }
613: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP_DIV) }
614: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MOD) }
615: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP_INTDIV) }
616: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SL) }
617: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SR) }
618: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_AND) }
619: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_OR) }
620: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_XOR) }
621: | expr "&&" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_AND) }
622: | expr "||" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_OR) }
623: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP_LOG_XOR) }
624: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LT) }
625: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GT) }
626: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LE) }
627: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GE) }
628: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_EQ) }
629: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_NE) }
630: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LT) }
631: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GT) }
632: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LE) }
633: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GE) }
634: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_EQ) }
635: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_NE) }
636: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP_IS) }
1.56 paf 637: ;
1.214 paf 638:
639: double_or_STRING: STRING {
640: // optimized from OP_STRING->OP_VALUE for doubles
641: maybe_change_string_literal_to_double_literal(*($$=$1));
642: };
1.55 paf 643:
1.65 paf 644: string_inside_quotes_value: maybe_codes {
1.206 paf 645: $$=N();
646: OA(*$$, OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 647: /* some code that writes to that context */
648: /* context=pop; stack: context.get_string() */
1.53 paf 649: };
1.1 paf 650:
1.27 paf 651: /* basics */
1.1 paf 652:
1.81 paf 653: write_string: STRING {
1.209 paf 654: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
655: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 656: };
657:
1.216 paf 658: void_value: /* empty */ { $$=VL(/*we know that we will not change it*/const_cast<VVoid*>(&vvoid), 0, 0, 0) }
659: true_value: "true" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vtrue), 0, 0, 0) }
660: false_value: "false" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vfalse), 0, 0, 0) }
661:
1.206 paf 662: empty: /* empty */ { $$=N() };
1.1 paf 663:
664: %%
1.105 paf 665: #endif
1.1 paf 666:
667: /*
668: 000$111(2222)00
669: 000$111{3333}00
1.9 paf 670: $,^: push,=0
1.1 paf 671: 1:( { break=pop
672: 2:( ) pop
673: 3:{ } pop
674:
675: 000^111(2222)4444{33333}4000
1.9 paf 676: $,^: push,=0
1.1 paf 677: 1:( { break=pop
678: 2:( )=4
679: 3:{ }=4
680: 4:[^({]=pop
681: */
682:
1.206 paf 683: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
684: pc.source--;
685: if(pc.pos.col==0) {
686: --pc.pos.line; pc.pos.col=last_line_end_col;
687: } else
688: --pc.pos.col;
689:
690: }
691: static int yylex(YYSTYPE *lvalp, void *apc) {
692: register Parse_control& pc=*static_cast<Parse_control*>(apc);
693:
694: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 695: #define RC {result=c; goto break2; }
1.1 paf 696:
1.206 paf 697: register int c;
698: int result;
1.1 paf 699:
1.206 paf 700: if(pc.pending_state) {
701: result=pc.pending_state;
702: pc.pending_state=0;
1.1 paf 703: return result;
704: }
705:
1.206 paf 706: const char *begin=pc.source;
707: Pos begin_pos=pc.pos;
1.91 paf 708: const char *end;
1.67 paf 709: int skip_analized=0;
1.50 paf 710: while(true) {
1.206 paf 711: c=*(end=(pc.source++));
712: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 713:
1.208 paf 714: if(c=='\n')
1.206 paf 715: pc.pos_next_line();
1.208 paf 716: else
1.206 paf 717: pc.pos_next_c(c);
1.208 paf 718: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 719:
1.208 paf 720: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 721: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 722: // @SPECIAL
723: // ...
724: // @<here =
1.206 paf 725: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 726: } // continuing checks
1.206 paf 727: if(pc.ls==LS_USER) {
728: push_LS(pc, LS_DEF_NAME);
1.171 parser 729: RC;
1.175 paf 730: } else // @ in first column inside some code [when could that be?]
1.171 parser 731: result=BAD_METHOD_DECL_START;
732: goto break2;
1.209 paf 733: }
734: if(c=='^') {
1.206 paf 735: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 736: // handle after-method situation
1.206 paf 737: pop_LS(pc);
1.203 paf 738: result=EON;
739: skip_analized=-1; // return to punctuation afterwards to assure it's literality
740: goto break2;
741: }
1.206 paf 742: switch(pc.ls) {
1.169 parser 743: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
744: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
745: case LS_VAR_NAME_SIMPLE_WITH_COLON:
746: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
747: case LS_VAR_NAME_CURLY:
748: case LS_METHOD_NAME:
1.194 paf 749: case LS_USER_COMMENT:
1.169 parser 750: case LS_DEF_COMMENT:
751: // no literals in names, please
752: break;
753: default:
1.206 paf 754: switch(*pc.source) {
1.165 parser 755: // ^escaping some punctuators
1.48 paf 756: case '^': case '$': case ';':
1.126 paf 757: case '(': case ')':
1.48 paf 758: case '[': case ']':
759: case '{': case '}':
1.172 parser 760: case '"': case ':':
1.40 paf 761: if(end!=begin) {
1.206 paf 762: if(!pc.string_start)
763: pc.string_start=begin_pos;
1.40 paf 764: // append piece till ^
1.206 paf 765: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 766: }
1.63 paf 767: // reset piece 'begin' position & line
1.206 paf 768: begin=pc.source; // ->punctuation
769: begin_pos=pc.pos;
1.203 paf 770: // skip over _ after ^
1.206 paf 771: pc.source++; pc.pos.col++;
1.203 paf 772: // skip analysis = forced literal
773: continue;
1.114 paf 774:
775: // converting ^#HH into char(hex(HH))
776: case '#':
777: if(end!=begin) {
1.206 paf 778: if(!pc.string_start)
779: pc.string_start=begin_pos;
1.114 paf 780: // append piece till ^
1.206 paf 781: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 782: }
783: // #HH ?
1.206 paf 784: if(pc.source[0]=='#' && pc.source[1] && pc.source[2]) {
1.218 paf 785: char c=(char)(
1.206 paf 786: hex_value[(unsigned char)pc.source[1]]*0x10+
1.218 paf 787: hex_value[(unsigned char)pc.source[2]]);
1.206 paf 788: if(c==0) {
1.114 paf 789: result=BAD_HEX_LITERAL;
790: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
791: }
792: // append char(hex(HH))
1.206 paf 793: pc.string.append(c);
1.114 paf 794: // skip over ^#HH
1.206 paf 795: pc.source+=3;
796: pc.pos.col+=3;
1.114 paf 797: // reset piece 'begin' position & line
1.206 paf 798: begin=pc.source; // ->after ^#HH
799: begin_pos=pc.pos;
1.203 paf 800: // skip analysis = forced literal
1.114 paf 801: continue;
802: }
803: break;
1.1 paf 804: }
1.169 parser 805: break;
1.203 paf 806: }
1.169 parser 807: }
1.113 paf 808: // #comment start skipping
1.206 paf 809: if(c=='#' && pc.pos.col==1) {
1.112 paf 810: if(end!=begin) {
1.206 paf 811: if(!pc.string_start)
812: pc.string_start=begin_pos;
1.112 paf 813: // append piece till #
1.206 paf 814: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 815: }
816: // fall into COMMENT lexical state [wait for \n]
1.206 paf 817: push_LS(pc, LS_USER_COMMENT);
1.175 paf 818: continue;
1.112 paf 819: }
1.206 paf 820: switch(pc.ls) {
1.10 paf 821:
822: // USER'S = NOT OURS
1.1 paf 823: case LS_USER:
1.206 paf 824: case LS_NAME_SQUARE_PART: // name.[here].xxx
825: if(pc.trim_bof)
1.153 parser 826: switch(c) {
827: case '\n': case ' ': case '\t':
1.206 paf 828: begin=pc.source;
829: begin_pos=pc.pos;
1.152 parser 830: continue; // skip it
1.153 parser 831: default:
1.206 paf 832: pc.trim_bof=false;
1.152 parser 833: }
1.48 paf 834: switch(c) {
835: case '$':
1.206 paf 836: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 837: RC;
838: case '^':
1.206 paf 839: push_LS(pc, LS_METHOD_NAME);
1.48 paf 840: RC;
1.166 parser 841: case ']':
1.206 paf 842: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 843: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 844: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 845: RC;
846: }
1.160 parser 847: break;
1.166 parser 848: case '[': // $name.[co<[>de]
1.206 paf 849: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 850: lexical_brackets_nestage++;
1.161 parser 851: break;
1.112 paf 852: }
1.209 paf 853: if(pc.explicit_result && c)
854: switch(c) {
855: case '\n': case ' ': case '\t':
856: begin=pc.source;
857: begin_pos=pc.pos;
858: continue; // skip it
859: default:
860: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
861: goto break2;
862: }
1.112 paf 863: break;
864:
865: // #COMMENT
1.194 paf 866: case LS_USER_COMMENT:
1.112 paf 867: if(c=='\n') {
868: // skip comment
1.206 paf 869: begin=pc.source;
870: begin_pos=pc.pos;
1.112 paf 871:
1.206 paf 872: pop_LS(pc);
1.112 paf 873: continue;
1.1 paf 874: }
1.48 paf 875: break;
876:
877: // STRING IN EXPRESSION
1.145 parser 878: case LS_EXPRESSION_STRING_QUOTED:
879: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 880: switch(c) {
881: case '"':
1.145 parser 882: case '\'':
883: if(
1.206 paf 884: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
885: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
886: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 887: RC;
888: }
889: break;
1.48 paf 890: case '$':
1.206 paf 891: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 892: RC;
893: case '^':
1.206 paf 894: push_LS(pc, LS_METHOD_NAME);
1.48 paf 895: RC;
1.10 paf 896: }
897: break;
898:
899: // METHOD DEFINITION
900: case LS_DEF_NAME:
1.48 paf 901: switch(c) {
902: case '[':
1.206 paf 903: pc.ls=LS_DEF_PARAMS;
1.48 paf 904: RC;
905: case '\n':
1.206 paf 906: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 907: RC;
1.10 paf 908: }
909: break;
1.48 paf 910:
1.10 paf 911: case LS_DEF_PARAMS:
1.48 paf 912: switch(c) {
1.192 paf 913: case '$': // common error
1.193 paf 914: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
915: goto break2;
1.48 paf 916: case ';':
917: RC;
918: case ']':
1.206 paf 919: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 920: RC;
1.49 paf 921: case '\n': // wrong. bailing out
1.206 paf 922: pop_LS(pc);
1.48 paf 923: RC;
1.10 paf 924: }
925: break;
1.48 paf 926:
1.10 paf 927: case LS_DEF_LOCALS:
1.48 paf 928: switch(c) {
929: case '[':
930: case ';':
931: RC;
932: case ']':
1.206 paf 933: pc.ls=LS_DEF_COMMENT;
1.48 paf 934: RC;
935: case '\n': // wrong. bailing out
1.206 paf 936: pop_LS(pc);
1.48 paf 937: RC;
1.10 paf 938: }
939: break;
1.48 paf 940:
1.10 paf 941: case LS_DEF_COMMENT:
942: if(c=='\n') {
1.206 paf 943: pop_LS(pc);
1.48 paf 944: RC;
1.37 paf 945: }
946: break;
947:
1.48 paf 948: case LS_DEF_SPECIAL_BODY:
1.175 paf 949: if(c=='\n')
1.48 paf 950: RC;
951: break;
952:
953: // (EXPRESSION)
1.69 paf 954: case LS_VAR_ROUND:
955: case LS_METHOD_ROUND:
1.48 paf 956: switch(c) {
957: case ')':
958: if(--lexical_brackets_nestage==0)
1.206 paf 959: if(pc.ls==LS_METHOD_ROUND) // method round param ended
960: pc.ls=LS_METHOD_AFTER; // look for method end
961: else // pc.ls==LS_VAR_ROUND // variable constructor ended
962: pop_LS(pc); // return to normal life
1.48 paf 963: RC;
1.194 paf 964: case '#': // comment start skipping
965: if(end!=begin) {
1.206 paf 966: if(!pc.string_start)
967: pc.string_start=begin_pos;
1.194 paf 968: // append piece till #
1.206 paf 969: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 970: }
971: // fall into COMMENT lexical state [wait for \n]
1.206 paf 972: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 973: lexical_brackets_nestage=1;
974: continue;
1.48 paf 975: case '$':
1.206 paf 976: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 977: RC;
978: case '^':
1.206 paf 979: push_LS(pc, LS_METHOD_NAME);
1.48 paf 980: RC;
981: case '(':
982: lexical_brackets_nestage++;
983: RC;
1.67 paf 984: case '-':
1.206 paf 985: switch(*pc.source) {
1.127 paf 986: case 'f': // -f
1.67 paf 987: skip_analized=1;
988: result=FEXISTS;
1.127 paf 989: goto break2;
990: case 'd': // -d
991: skip_analized=1;
992: result=DEXISTS;
993: goto break2;
1.191 paf 994: default: // minus
1.67 paf 995: result=c;
1.127 paf 996: goto break2;
997: }
1.67 paf 998: goto break2;
1.173 paf 999: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 1000: case '~':
1.48 paf 1001: case ';':
1002: RC;
1.193 paf 1003: case '&': case '|':
1.206 paf 1004: if(*pc.source==c) { // && ||
1.193 paf 1005: result=c=='&'?LAND:LOR;
1.67 paf 1006: skip_analized=1;
1.58 paf 1007: } else
1008: result=c;
1009: goto break2;
1.193 paf 1010: case '!':
1.206 paf 1011: switch(pc.source[0]) {
1.193 paf 1012: case '|': // !| !||
1013: skip_analized=1;
1.206 paf 1014: if(pc.source[1]=='|') {
1.193 paf 1015: skip_analized++;
1016: result=LXOR;
1017: } else
1018: result=NXOR;
1019: goto break2;
1020: case '=': // !=
1021: skip_analized=1;
1022: result=NNE;
1023: goto break2;
1024: }
1025: RC;
1.195 paf 1026:
1027: case '<': // <<, <=, <
1.206 paf 1028: switch(*pc.source) {
1.195 paf 1029: case '<': // <[<]
1030: skip_analized=1; result=NSL; break;
1031: case '=': // <[=]
1032: skip_analized=1; result=NLE; break;
1033: default: // <[]
1034: result=c; break;
1035: }
1036: goto break2;
1037: case '>': // >>, >=, >
1.206 paf 1038: switch(*pc.source) {
1.195 paf 1039: case '>': // >[>]
1040: skip_analized=1; result=NSR; break;
1041: case '=': // >[=]
1042: skip_analized=1; result=NGE; break;
1043: default: // >[]
1044: result=c; break;
1045: }
1046: goto break2;
1047: case '=': // ==
1.206 paf 1048: switch(*pc.source) {
1.195 paf 1049: case '=': // =[=]
1050: skip_analized=1; result=NEQ; break;
1051: default: // =[]
1052: result=c; break; // not used now
1053: }
1.58 paf 1054: goto break2;
1.195 paf 1055:
1.48 paf 1056: case '"':
1.206 paf 1057: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1058: RC;
1059: case '\'':
1.206 paf 1060: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1061: RC;
1.50 paf 1062: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1063: if(end==begin) // right after whitespace
1.206 paf 1064: if(isspace(pc.source[1])) {
1065: switch(*pc.source) {
1.117 paf 1066: // case '?': // ok [and bad cases, yacc would bark at them]
1067: case 't': // lt gt [et nt]
1068: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1069: skip_analized=1;
1070: goto break2;
1071: case 'e': // le ge ne [ee]
1072: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1073: skip_analized=1;
1074: goto break2;
1075: case 'q': // eq [lq gq nq]
1076: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1077: skip_analized=1;
1078: goto break2;
1079: }
1.67 paf 1080: }
1081: break;
1082: case 'i':
1083: if(end==begin) // right after whitespace
1.206 paf 1084: if(isspace(pc.source[1])) {
1085: switch(pc.source[0]) {
1.117 paf 1086: case 'n': // in
1.95 paf 1087: skip_analized=1;
1088: result=IN;
1089: goto break2;
1.117 paf 1090: case 's': // is
1.95 paf 1091: skip_analized=1;
1092: result=IS;
1093: goto break2;
1094: }
1.67 paf 1095: }
1096: break;
1097: case 'd':
1098: if(end==begin) // right after whitespace
1.206 paf 1099: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.67 paf 1100: skip_analized=2;
1101: result=DEF;
1.58 paf 1102: goto break2;
1.50 paf 1103: }
1.48 paf 1104: break;
1.216 paf 1105: case 't':
1106: if(end==begin) // right after whitespace
1107: if(pc.source[0]=='r' && pc.source[1]=='u' && pc.source[2]=='e') { // def
1108: skip_analized=3;
1109: result=LITERAL_TRUE;
1110: goto break2;
1111: }
1112: break;
1113: case 'f':
1114: if(end==begin) // right after whitespace
1115: if(pc.source[0]=='a' && pc.source[1]=='l' && pc.source[2]=='s' && pc.source[3]=='e') { // def
1116: skip_analized=4;
1117: result=LITERAL_FALSE;
1118: goto break2;
1119: }
1120: break;
1.48 paf 1121: case ' ': case '\t': case '\n':
1.63 paf 1122: if(end!=begin) { // there were a string after previous operator?
1123: result=0; // return that string
1124: goto break2;
1.48 paf 1125: }
1.63 paf 1126: // that's a leading|traling space or after-operator-space
1127: // ignoring it
1128: // reset piece 'begin' position & line
1.206 paf 1129: begin=pc.source; // after whitespace char
1130: begin_pos=pc.pos;
1.48 paf 1131: continue;
1.1 paf 1132: }
1133: break;
1.194 paf 1134: case LS_EXPRESSION_COMMENT:
1135: if(c=='(')
1136: lexical_brackets_nestage++;
1137:
1.206 paf 1138: switch(*pc.source) {
1.194 paf 1139: case '\n': case ')':
1.206 paf 1140: if(*pc.source==')')
1.194 paf 1141: if(--lexical_brackets_nestage!=0)
1142: continue;
1143:
1144: // skip comment
1.206 paf 1145: begin=pc.source;
1146: begin_pos=pc.pos;
1.194 paf 1147:
1.206 paf 1148: pop_LS(pc);
1.194 paf 1149: continue;
1150: }
1151: break;
1.1 paf 1152:
1.10 paf 1153: // VARIABLE GET/PUT/WITH
1.166 parser 1154: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1155: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1156: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1157: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1158: if(
1.206 paf 1159: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1160: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1161: // name in expr ends also before
1.48 paf 1162: switch(c) {
1.181 paf 1163: // expression minus
1.92 paf 1164: case '-':
1.181 paf 1165: // expression integer division
1166: case '\\':
1.206 paf 1167: pop_LS(pc);
1168: pc.ungetc();
1.48 paf 1169: result=EON;
1170: goto break2;
1171: }
1172: }
1.166 parser 1173: if(
1.206 paf 1174: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1175: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1176: // name already has ':', stop before next
1177: switch(c) {
1178: case ':':
1.206 paf 1179: pop_LS(pc);
1180: pc.ungetc();
1.142 parser 1181: result=EON;
1182: goto break2;
1183: }
1184: }
1.48 paf 1185: switch(c) {
1186: case 0:
1187: case ' ': case '\t': case '\n':
1188: case ';':
1.126 paf 1189: case ']': case '}': case ')':
1190: case '"': case '\'':
1.139 parser 1191: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1192: case '+': case '*': case '/': case '%':
1193: case '&': case '|':
1194: case '=': case '!':
1.99 paf 1195: // common delimiters
1.190 paf 1196: case ',': case '?': case '#':
1.220 paf 1197: // mysql column separators
1198: case '`':
1.139 parser 1199: // before call
1200: case '^':
1.206 paf 1201: pop_LS(pc);
1202: pc.ungetc();
1.13 paf 1203: result=EON;
1.1 paf 1204: goto break2;
1.48 paf 1205: case '[':
1.162 parser 1206: // $name.<[>code]
1.206 paf 1207: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1208: end[-1]=='$'/*was start of get*/ ||
1209: end[-1]==':'/*was class name delim */ ||
1210: end[-1]=='.'/*was name delim */
1.162 parser 1211: )) {
1.206 paf 1212: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1213: lexical_brackets_nestage=1;
1214: RC;
1215: }
1.206 paf 1216: pc.ls=LS_VAR_SQUARE;
1.1 paf 1217: lexical_brackets_nestage=1;
1.48 paf 1218: RC;
1219: case '{':
1220: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1221: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1222: } else {
1.206 paf 1223: pc.ls=LS_VAR_CURLY;
1.48 paf 1224: lexical_brackets_nestage=1;
1225: }
1.69 paf 1226:
1.48 paf 1227: RC;
1228: case '(':
1.206 paf 1229: pc.ls=LS_VAR_ROUND;
1.1 paf 1230: lexical_brackets_nestage=1;
1.48 paf 1231: RC;
1232: case '.': // name part delim
1233: case '$': // name part subvar
1.160 parser 1234: case ':': // class<:>name
1.166 parser 1235: // go to _WITHOUT_COLON state variant...
1.206 paf 1236: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1237: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1238: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1239: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1240: // ...stop before next ':'
1.48 paf 1241: RC;
1.1 paf 1242: }
1243: break;
1.48 paf 1244:
1.1 paf 1245: case LS_VAR_NAME_CURLY:
1.48 paf 1246: switch(c) {
1.162 parser 1247: case '[':
1.166 parser 1248: // ${name.<[>code]}
1.206 paf 1249: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1250: lexical_brackets_nestage=1;
1251: RC;
1.48 paf 1252: case '}': // ${name} finished, restoring LS
1.206 paf 1253: pop_LS(pc);
1.48 paf 1254: RC;
1255: case '.': // name part delim
1256: case '$': // name part subvar
1257: case ':': // ':name' or 'class:name'
1258: RC;
1.1 paf 1259: }
1260: break;
1.48 paf 1261:
1262: case LS_VAR_SQUARE:
1263: switch(c) {
1264: case '$':
1.206 paf 1265: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1266: RC;
1267: case '^':
1.206 paf 1268: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1269: RC;
1270: case ']':
1.1 paf 1271: if(--lexical_brackets_nestage==0) {
1.206 paf 1272: pop_LS(pc);
1.48 paf 1273: RC;
1.1 paf 1274: }
1.48 paf 1275: break;
1276: case ';': // operator_or_fmt;value delim
1277: RC;
1278: case '[':
1279: lexical_brackets_nestage++;
1280: break;
1.1 paf 1281: }
1282: break;
1.48 paf 1283:
1.1 paf 1284: case LS_VAR_CURLY:
1.48 paf 1285: switch(c) {
1286: case '$':
1.206 paf 1287: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1288: RC;
1289: case '^':
1.206 paf 1290: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1291: RC;
1292: case '}':
1.1 paf 1293: if(--lexical_brackets_nestage==0) {
1.206 paf 1294: pop_LS(pc);
1.48 paf 1295: RC;
1.1 paf 1296: }
1.48 paf 1297: break;
1298: case '{':
1.1 paf 1299: lexical_brackets_nestage++;
1.48 paf 1300: break;
1301: }
1.1 paf 1302: break;
1303:
1.10 paf 1304: // METHOD CALL
1.1 paf 1305: case LS_METHOD_NAME:
1.48 paf 1306: switch(c) {
1307: case '[':
1.166 parser 1308: // ^name.<[>code].xxx
1.206 paf 1309: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1310: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1311: end[-1]==':'/*was class name delim */ ||
1312: end[-1]=='.'/*was name delim */
1.162 parser 1313: )) {
1.206 paf 1314: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1315: lexical_brackets_nestage=1;
1316: RC;
1317: }
1.206 paf 1318: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1319: lexical_brackets_nestage=1;
1.48 paf 1320: RC;
1321: case '{':
1.206 paf 1322: pc.ls=LS_METHOD_CURLY;
1.1 paf 1323: lexical_brackets_nestage=1;
1.48 paf 1324: RC;
1.69 paf 1325: case '(':
1.206 paf 1326: pc.ls=LS_METHOD_ROUND;
1.69 paf 1327: lexical_brackets_nestage=1;
1328: RC;
1.48 paf 1329: case '.': // name part delim
1330: case '$': // name part subvar
1331: case ':': // ':name' or 'class:name'
1.170 parser 1332: case '^': // ^abc^xxx wrong. bailing out
1333: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1334: case ' ': // ^if ( wrong. bailing out
1.48 paf 1335: RC;
1.1 paf 1336: }
1337: break;
1.48 paf 1338:
1339: case LS_METHOD_SQUARE:
1340: switch(c) {
1341: case '$':
1.206 paf 1342: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1343: RC;
1344: case '^':
1.206 paf 1345: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1346: RC;
1347: case ';': // param delim
1348: RC;
1349: case ']':
1.1 paf 1350: if(--lexical_brackets_nestage==0) {
1.206 paf 1351: pc.ls=LS_METHOD_AFTER;
1.48 paf 1352: RC;
1.1 paf 1353: }
1.48 paf 1354: break;
1355: case '[':
1.1 paf 1356: lexical_brackets_nestage++;
1.48 paf 1357: break;
1358: }
1.1 paf 1359: break;
1.48 paf 1360:
1.1 paf 1361: case LS_METHOD_CURLY:
1.48 paf 1362: switch(c) {
1363: case '$':
1.206 paf 1364: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1365: RC;
1366: case '^':
1.206 paf 1367: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1368: RC;
1369: case ';': // param delim
1.48 paf 1370: RC;
1371: case '}':
1.1 paf 1372: if(--lexical_brackets_nestage==0) {
1.206 paf 1373: pc.ls=LS_METHOD_AFTER;
1.48 paf 1374: RC;
1.1 paf 1375: }
1.48 paf 1376: break;
1377: case '{':
1.1 paf 1378: lexical_brackets_nestage++;
1.48 paf 1379: break;
1380: }
1.209 paf 1381: if(pc.explicit_result && c)
1382: switch(c) {
1383: case '\n': case ' ': case '\t':
1384: begin=pc.source;
1385: begin_pos=pc.pos;
1386: continue; // skip it
1387: default:
1388: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
1389: goto break2;
1390: }
1.1 paf 1391: break;
1.48 paf 1392:
1.1 paf 1393: case LS_METHOD_AFTER:
1.69 paf 1394: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1395: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1396: lexical_brackets_nestage=1;
1.48 paf 1397: RC;
1.1 paf 1398: }
1.69 paf 1399: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1400: pc.ls=LS_METHOD_CURLY;
1.69 paf 1401: lexical_brackets_nestage=1;
1402: RC;
1403: }
1404: if(c=='(') {/* ]( }( )( */
1.206 paf 1405: pc.ls=LS_METHOD_ROUND;
1.1 paf 1406: lexical_brackets_nestage=1;
1.48 paf 1407: RC;
1.1 paf 1408: }
1.206 paf 1409: pop_LS(pc);
1410: pc.ungetc();
1.13 paf 1411: result=EON;
1.1 paf 1412: goto break2;
1413: }
1.9 paf 1414: if(c==0) {
1.1 paf 1415: result=-1;
1416: break;
1417: }
1418: }
1419:
1420: break2:
1.59 paf 1421: if(end!=begin) { // there is last piece?
1422: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1423: // strip last \n
1.10 paf 1424: end--;
1.137 parser 1425: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1426: end--;
1.59 paf 1427: }
1.206 paf 1428: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1429: if(!pc.string_start)
1430: pc.string_start=begin_pos;
1.59 paf 1431: // append it
1.206 paf 1432: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1433: }
1.59 paf 1434: }
1.206 paf 1435: if(!pc.string.is_empty()) { // something accumulated?
1436: // create STRING value: array of OP_VALUE+origin+vstring
1437: *lvalp=VL(
1438: new VString(*new String(pc.string, String::L_CLEAN)),
1439: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1440: // new pieces storage
1.206 paf 1441: pc.string.clear();
1442: pc.string_start.clear();
1.58 paf 1443: // make current result be pending for next call, return STRING for now
1.206 paf 1444: pc.pending_state=result; result=STRING;
1.58 paf 1445: }
1.67 paf 1446: if(skip_analized) {
1.206 paf 1447: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1448: }
1.58 paf 1449: return result;
1.1 paf 1450: }
1451:
1.206 paf 1452: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1453: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1454: return 1;
1.110 paf 1455: }
1.1 paf 1456:
1.110 paf 1457: static void yyprint(FILE *file, int type, YYSTYPE value) {
1458: if(type==STRING)
1.206 paf 1459: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1460: }
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