Annotation of parser3/src/main/compile.y, revision 1.223
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:
1.223 ! misha 8: $Id: compile.y,v 1.222 2007/10/25 10:52:48 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) {
1.188 paf 154: if(PC.cclass->base_class()) { // already changed from default?
1.114 paf 155: strcpy(PC.error, "class already have a name '");
156: strncat(PC.error, PC.cclass->name().cstr(), 100);
157: strcat(PC.error, "'");
1.73 paf 158: YYERROR;
159: }
1.206 paf 160: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.73 paf 161: // new class' name
1.206 paf 162: const String& name=*LA2S(*strings_code);
1.73 paf 163: // creating the class
1.206 paf 164: VStateless_class* cclass=new VClass;
165: PC.cclass=cclass;
166: PC.cclass->set_name(name);
1.73 paf 167: // append to request's classes
1.206 paf 168: PC.request.classes().put(name, cclass);
1.73 paf 169: } else {
1.206 paf 170: strcpy(PC.error, "@"CLASS_NAME" must contain only one line with class name (contains more then one)");
1.34 paf 171: YYERROR;
172: }
1.130 paf 173: } else if(command==USE_CONTROL_METHOD_NAME) {
1.206 paf 174: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE)
175: PC.request.use_file(PC.request.main_class, *LA2S(*strings_code, i));
1.130 paf 176: } else if(command==BASE_NAME) {
1.188 paf 177: if(PC.cclass->base_class()) { // already changed from default?
1.130 paf 178: strcpy(PC.error, "class already have a base '");
1.188 paf 179: strncat(PC.error, PC.cclass->base_class()->name().cstr(), 100);
1.130 paf 180: strcat(PC.error, "'");
181: YYERROR;
182: }
1.206 paf 183: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
184: const String& base_name=*LA2S(*strings_code);
185: if(Value* base_class_value=PC.request.classes().get(base_name)) {
186: // @CLASS == @BASE sanity check
187: if(VStateless_class *base_class=base_class_value->get_class()) {
188: if(PC.cclass==base_class) {
189: strcpy(PC.error, "@"CLASS_NAME" equals @"BASE_NAME);
190: YYERROR;
191: }
192: PC.cclass->get_class()->set_base(base_class);
193: } else { // they asked to derive from a class without methods ['env' & co]
194: strcpy(PC.error, base_name.cstr());
195: strcat(PC.error, ": you can not derive from this class in @"BASE_NAME);
196: YYERROR;
197: }
198: } else {
1.130 paf 199: strcpy(PC.error, base_name.cstr());
200: strcat(PC.error, ": undefined class in @"BASE_NAME);
1.73 paf 201: YYERROR;
202: }
1.34 paf 203: } else {
1.130 paf 204: strcpy(PC.error, "@"BASE_NAME" must contain sole name");
1.34 paf 205: YYERROR;
206: }
1.223 ! misha 207: } else if(command==OPTIONS_CONTROL_METHOD_NAME) {
! 208: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE) {
! 209: const String& option=*LA2S(*strings_code, i);
! 210: if(option==ALL_VARS_LOCAL_NAME){
! 211: PC.cclass->all_vars_local();
! 212: } else {
! 213: strcpy(PC.error, option.cstr());
! 214: strcat(PC.error, ": unknown option in @"OPTIONS_CONTROL_METHOD_NAME" was specified.");
! 215: YYERROR;
! 216: }
! 217: }
1.130 paf 218: } else {
219: strcpy(PC.error, "'");
220: strncat(PC.error, command.cstr(), MAX_STRING/2);
221: strcat(PC.error, "' invalid special name. valid names are "
1.223 ! misha 222: "'"CLASS_NAME"', '"USE_CONTROL_METHOD_NAME"', '"BASE_NAME"' and '"OPTIONS_CONTROL_METHOD_NAME"'.");
1.130 paf 223: YYERROR;
1.34 paf 224: }
225: };
1.132 paf 226: maybe_control_strings: empty | control_strings;
1.206 paf 227: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2) };
1.37 paf 228: control_string: maybe_string '\n';
229: maybe_string: empty | STRING;
1.34 paf 230:
1.222 misha 231: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n' {
1.208 paf 232: PC.explicit_result=false;
1.10 paf 233:
234: YYSTYPE params_names_code=$3;
1.206 paf 235: ArrayString* params_names=0;
236: if(int size=params_names_code->count()) {
237: params_names=new ArrayString;
238: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
239: *params_names+=LA2S(*params_names_code, i);
1.75 paf 240: }
1.10 paf 241:
242: YYSTYPE locals_names_code=$4;
1.206 paf 243: ArrayString* locals_names=0;
1.223 ! misha 244: bool all_vars_local=false;
1.206 paf 245: if(int size=locals_names_code->count()) {
246: locals_names=new ArrayString;
1.208 paf 247: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE) {
248: const String* local_name=LA2S(*locals_names_code, i);
249: if(*local_name==RESULT_VAR_NAME)
250: PC.explicit_result=true;
1.223 ! misha 251: else if(*local_name==ALL_VARS_LOCAL_NAME)
! 252: all_vars_local=true;
1.208 paf 253: else
254: *locals_names+=local_name;
255: }
1.75 paf 256: }
1.223 ! misha 257: if(!all_vars_local && PC.cclass && PC.cclass->is_vars_local()){
! 258: all_vars_local=true;
! 259: }
1.10 paf 260:
1.208 paf 261: Method* method=new Method(
1.206 paf 262: //name,
1.122 paf 263: Method::CT_ANY,
1.81 paf 264: 0, 0/*min,max numbered_params_count*/,
1.76 paf 265: params_names, locals_names,
1.223 ! misha 266: 0/*to be filled later in next {} */, 0, all_vars_local);
1.221 misha 267:
1.208 paf 268: *reinterpret_cast<Method**>(&$$)=method;
269:
270: // todo: check [][;result;]
1.222 misha 271: } maybe_codes {
272: Method& method=*reinterpret_cast<Method*>($7);
273: // fill in the code
274: method.parser_code=$8;
275: // register in class
276: const String& name=*LA2S(*$2);
277: PC.cclass->add_method(PC.alias_method(name), method);
1.8 paf 278: };
1.10 paf 279:
280: maybe_bracketed_strings: empty | bracketed_maybe_strings;
281: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
282: maybe_strings: empty | strings;
1.206 paf 283: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3) };
1.10 paf 284:
285: maybe_comment: empty | STRING;
1.1 paf 286:
287: /* codes */
288:
1.10 paf 289: maybe_codes: empty | codes;
290:
1.206 paf 291: codes: code | codes code { $$=$1; P(*$$, *$2) };
1.81 paf 292: code: write_string | action;
1.209 paf 293: action: get | put | call;
1.1 paf 294:
295: /* get */
296:
1.64 paf 297: get: get_value {
1.184 paf 298: $$=$1; /* stack: resulting value */
1.206 paf 299: changetail_or_append(*$$,
1.186 paf 300: OP_GET_ELEMENT, false, /*->*/OP_GET_ELEMENT__WRITE,
301: /*or */OP_WRITE_VALUE
1.184 paf 302: ); /* value=pop; wcontext.write(value) */
1.1 paf 303: };
1.163 parser 304: get_value: '$' get_name_value { $$=$2 };
1.64 paf 305: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 306: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 307: name_without_curly_rdive:
308: name_without_curly_rdive_read
309: | name_without_curly_rdive_class;
1.19 paf 310: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 311: $$=N();
312: ArrayOperation* diving_code=$1;
313: const String* first_name=LA2S(*diving_code);
1.179 paf 314: // self.xxx... -> xxx...
1.206 paf 315: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 316: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.206 paf 317: O(*yyval, OP_WITH_SELF); /* stack: starting context */
318: P(*yyval, *diving_code,
1.22 paf 319: /* skip over... */
1.206 paf 320: diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.22 paf 321: } else {
1.206 paf 322: O(*yyval, OP_WITH_READ); /* stack: starting context */
1.179 paf 323:
1.201 paf 324: // ^if ELEMENT -> ^if ELEMENT_OR_OPERATOR
1.206 paf 325: // OP_VALUE+origin+string+OP_GET_ELEMENT. -> OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
326: if(PC.in_call_value && diving_code->count()==4)
327: diving_code->put(4-1, OP_GET_ELEMENT_OR_OPERATOR);
328: P(*$$, *diving_code);
1.22 paf 329: }
330: /* diving code; stack: current context */
1.1 paf 331: };
1.206 paf 332: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2) };
333: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2) };
1.1 paf 334:
335: /* put */
336:
1.81 paf 337: put: '$' name_expr_wdive construct {
1.20 paf 338: $$=$2; /* stack: context,name */
1.206 paf 339: P(*$$, *$3); /* stack: context,name,constructor_value */
1.20 paf 340: };
1.44 paf 341: name_expr_wdive:
1.157 parser 342: name_expr_wdive_root
343: | name_expr_wdive_write
1.44 paf 344: | name_expr_wdive_class;
1.157 parser 345: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 346: $$=N();
347: ArrayOperation* diving_code=$1;
348: const String* first_name=LA2S(*diving_code);
1.179 paf 349: // $self.xxx... -> $xxx...
1.206 paf 350: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 351: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.206 paf 352: O(*$$, OP_WITH_SELF); /* stack: starting context */
353: P(*$$, *diving_code,
1.23 paf 354: /* skip over... */
1.206 paf 355: diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.23 paf 356: } else {
1.206 paf 357: O(*$$, OP_WITH_ROOT); /* stack: starting context */
358: P(*$$, *diving_code);
1.23 paf 359: }
360: /* diving code; stack: current context */
1.156 parser 361: };
1.157 parser 362: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 363: $$=N();
364: O(*$$, OP_WITH_WRITE); /* stack: starting context */
365: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 366: };
1.206 paf 367: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2) };
1.20 paf 368:
1.149 parser 369: construct:
1.163 parser 370: construct_square
371: | construct_round
372: | construct_curly
1.149 parser 373: ;
1.211 paf 374: construct_square: '[' {
375: // allow $result_or_other_variable[ letters here any time ]
376: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
377: } any_constructor_code_value {
1.213 paf 378: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.211 paf 379: } ']' {
1.149 parser 380: // stack: context, name
1.211 paf 381: $$=$3; // stack: context, name, value
1.206 paf 382: O(*$$, OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 383: }
384: ;
1.149 parser 385: construct_round: '(' expr_value ')' {
1.206 paf 386: $$=N();
387: O(*$$, OP_PREPARE_TO_EXPRESSION);
1.149 parser 388: // stack: context, name
1.206 paf 389: P(*$$, *$2); // stack: context, name, value
390: O(*$$, OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 391: }
1.52 paf 392: ;
1.149 parser 393: construct_curly: '{' maybe_codes '}' {
394: // stack: context, name
1.206 paf 395: $$=N();
396: OA(*$$, OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 397: };
398:
1.55 paf 399: any_constructor_code_value:
1.157 parser 400: void_value /* optimized $var[] case */
1.52 paf 401: | STRING /* optimized $var[STRING] case */
1.55 paf 402: | constructor_code_value /* $var[something complex] */
1.1 paf 403: ;
1.55 paf 404: constructor_code_value: constructor_code {
1.206 paf 405: $$=N();
406: OA(*$$, OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 407: /* some code that writes to that context */
408: /* context=pop; stack: context.value() */
1.1 paf 409: };
1.55 paf 410: constructor_code: codes__excluding_sole_str_literal;
1.206 paf 411: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 412:
1.1 paf 413: /* call */
414:
1.66 paf 415: call: call_value {
416: $$=$1; /* stack: value */
1.206 paf 417: changetail_or_append(*$$,
1.186 paf 418: OP_CALL, true, /*->*/ OP_CALL__WRITE,
419: /*or */OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.66 paf 420: };
1.177 paf 421: call_value: '^' {
1.180 paf 422: PC.in_call_value=true;
1.177 paf 423: }
424: call_name {
1.180 paf 425: PC.in_call_value=false;
1.177 paf 426: }
1.154 parser 427: store_params EON { /* ^field.$method{vasya} */
428: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 429:
1.154 parser 430: YYSTYPE params_code=$5;
1.206 paf 431: if(params_code->count()==4) { // probably [] case. [OP_VALUE+origin+Void+STORE_PARAM]
432: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.219 paf 433: if(value->is_void()) // value is VVoid?
1.123 paf 434: params_code=0; // ^zzz[] case. don't append lone empty param.
1.186 paf 435: }
436: /* stack: context, method_junction */
1.206 paf 437: OA(*$$, OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
1.1 paf 438: };
439:
1.43 paf 440: call_name: name_without_curly_rdive;
1.38 paf 441:
1.206 paf 442: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2) };
1.69 paf 443: store_param:
444: store_square_param
445: | store_round_param
446: | store_curly_param
1.31 paf 447: ;
1.210 paf 448: store_square_param: '[' {
1.211 paf 449: // allow ^call[ letters here any time ]
1.210 paf 450: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
451: } store_code_param_parts {
1.213 paf 452: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.210 paf 453: } ']' {$$=$3};
1.69 paf 454: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 455: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 456: store_code_param_parts:
457: store_code_param_part
1.206 paf 458: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 459: ;
460: store_expr_param_parts:
461: store_expr_param_part
1.206 paf 462: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 463: ;
1.94 paf 464: store_curly_param_parts:
465: store_curly_param_part
1.206 paf 466: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3) }
1.94 paf 467: ;
1.120 paf 468: store_code_param_part: code_param_value {
1.32 paf 469: $$=$1;
1.206 paf 470: O(*$$, OP_STORE_PARAM);
1.120 paf 471: };
1.214 paf 472: store_expr_param_part: expr_value {
473: YYSTYPE expr_code=$1;
1.215 paf 474: if(expr_code->count()==3
1.216 paf 475: && (*expr_code)[0].code==OP_VALUE) { // optimizing (double/bool/incidently 'string' too) case. [OP_VALUE+origin+Double]
1.214 paf 476: $$=expr_code;
477: O(*$$, OP_STORE_PARAM); // no evaluating
478: } else {
479: ArrayOperation* code=N();
480: O(*code, OP_PREPARE_TO_EXPRESSION);
481: P(*code, *expr_code);
482: O(*code, OP_WRITE_EXPR_RESULT);
483: $$=N();
484: OA(*$$, OP_EXPR_CODE__STORE_PARAM, code);
485: }
1.69 paf 486: };
1.94 paf 487: store_curly_param_part: maybe_codes {
1.206 paf 488: $$=N();
489: OA(*$$, OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 490: };
1.120 paf 491: code_param_value:
1.157 parser 492: void_value /* optimized [;...] case */
1.120 paf 493: | STRING /* optimized [STRING] case */
494: | constructor_code_value /* [something complex] */
495: ;
1.1 paf 496:
497: /* name */
498:
1.206 paf 499: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 500:
1.206 paf 501: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 502: name_step: name_advance1 '.';
503: name_advance1: name_expr_value {
1.177 paf 504: // we know that name_advance1 not called from ^xxx context
505: // so we'll not check for operator call possibility as we do in name_advance2
506:
1.1 paf 507: /* stack: context */
508: $$=$1; /* stack: context,name */
1.206 paf 509: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 510: };
511: name_advance2: name_expr_value {
512: /* stack: context */
513: $$=$1; /* stack: context,name */
1.206 paf 514: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 515: }
1.4 paf 516: | STRING BOGUS
1.1 paf 517: ;
518: name_expr_value:
1.4 paf 519: STRING /* subname_is_const */
1.1 paf 520: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 521: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 522: | name_square_code_value /* [codes] */
1.1 paf 523: ;
524: name_expr_subvar_value: '$' subvar_ref_name_rdive {
525: $$=$2;
1.206 paf 526: O(*$$, OP_GET_ELEMENT);
1.1 paf 527: };
1.4 paf 528: name_expr_with_subvar_value: STRING subvar_get_writes {
1.206 paf 529: ArrayOperation* code;
1.183 paf 530: {
1.206 paf 531: change_string_literal_to_write_string_literal(*(code=$1));
532: P(*code, *$2);
1.183 paf 533: }
1.206 paf 534: $$=N();
535: OA(*$$, OP_STRING_POOL, code);
1.1 paf 536: };
1.212 paf 537: name_square_code_value: '[' {
538: // allow $result_or_other_variable[ letters here any time ]
539: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
540: } codes {
1.213 paf 541: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.212 paf 542: } ']' {
1.206 paf 543: $$=N();
1.212 paf 544: OA(*$$, OP_OBJECT_POOL, $3); /* stack: empty write context */
1.183 paf 545: /* some code that writes to that context */
546: /* context=pop; stack: context.value() */
1.160 parser 547: };
1.154 parser 548: subvar_ref_name_rdive: STRING {
1.206 paf 549: $$=N();
550: O(*$$, OP_WITH_READ);
551: P(*$$, *$1);
1.1 paf 552: };
1.206 paf 553: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 554: subvar__get_write: '$' subvar_ref_name_rdive {
555: $$=$2;
1.206 paf 556: O(*$$, OP_GET_ELEMENT__WRITE);
1.42 paf 557: };
558:
1.154 parser 559: class_prefix:
560: class_static_prefix
561: | class_constructor_prefix
562: ;
1.155 parser 563: class_static_prefix: STRING ':' {
564: $$=$1; // stack: class name string
1.206 paf 565: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
566: if(VStateless_class* base=PC.cclass->base_class()) {
567: change_string_literal_value(*$$, base->name());
1.189 paf 568: } else {
569: strcpy(PC.error, "no base class declared");
570: YYERROR;
571: }
572: }
1.206 paf 573: O(*$$, OP_GET_CLASS);
1.155 parser 574: };
575: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 576: $$=$1;
1.180 paf 577: if(!PC.in_call_value) {
1.154 parser 578: strcpy(PC.error, ":: not allowed here");
579: YYERROR;
580: }
1.206 paf 581: O(*$$, OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 582: };
583:
1.53 paf 584:
1.56 paf 585: /* expr */
1.53 paf 586:
1.214 paf 587: expr_value: expr;
1.56 paf 588: expr:
1.214 paf 589: double_or_STRING
1.216 paf 590: | true_value
591: | false_value
1.64 paf 592: | get_value
1.66 paf 593: | call_value
1.216 paf 594: | '"' string_inside_quotes_value '"' { $$ = $2 }
595: | '\'' string_inside_quotes_value '\'' { $$ = $2 }
1.60 paf 596: | '(' expr ')' { $$ = $2; }
597: /* stack: operand // stack: @operand */
1.206 paf 598: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP_NEG) }
1.202 paf 599: | '+' expr %prec NUNARY { $$=$2 }
1.206 paf 600: | '~' expr { $$=$2; O(*$$, OP_INV) }
601: | '!' expr { $$=$2; O(*$$, OP_NOT) }
602: | "def" expr { $$=$2; O(*$$, OP_DEF) }
603: | "in" expr { $$=$2; O(*$$, OP_IN) }
604: | "-f" expr { $$=$2; O(*$$, OP_FEXISTS) }
605: | "-d" expr { $$=$2; O(*$$, OP_DEXISTS) }
1.60 paf 606: /* stack: a,b // stack: a@b */
1.206 paf 607: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP_SUB) }
608: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP_ADD) }
609: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MUL) }
610: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP_DIV) }
611: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MOD) }
612: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP_INTDIV) }
613: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SL) }
614: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SR) }
615: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_AND) }
616: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_OR) }
617: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_XOR) }
618: | expr "&&" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_AND) }
619: | expr "||" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_OR) }
620: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP_LOG_XOR) }
621: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LT) }
622: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GT) }
623: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LE) }
624: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GE) }
625: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_EQ) }
626: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_NE) }
627: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LT) }
628: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GT) }
629: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LE) }
630: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GE) }
631: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_EQ) }
632: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_NE) }
633: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP_IS) }
1.56 paf 634: ;
1.214 paf 635:
636: double_or_STRING: STRING {
637: // optimized from OP_STRING->OP_VALUE for doubles
638: maybe_change_string_literal_to_double_literal(*($$=$1));
639: };
1.55 paf 640:
1.65 paf 641: string_inside_quotes_value: maybe_codes {
1.206 paf 642: $$=N();
643: OA(*$$, OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 644: /* some code that writes to that context */
645: /* context=pop; stack: context.get_string() */
1.53 paf 646: };
1.1 paf 647:
1.27 paf 648: /* basics */
1.1 paf 649:
1.81 paf 650: write_string: STRING {
1.209 paf 651: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
652: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 653: };
654:
1.216 paf 655: void_value: /* empty */ { $$=VL(/*we know that we will not change it*/const_cast<VVoid*>(&vvoid), 0, 0, 0) }
656: true_value: "true" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vtrue), 0, 0, 0) }
657: false_value: "false" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vfalse), 0, 0, 0) }
658:
1.206 paf 659: empty: /* empty */ { $$=N() };
1.1 paf 660:
661: %%
1.105 paf 662: #endif
1.1 paf 663:
664: /*
665: 000$111(2222)00
666: 000$111{3333}00
1.9 paf 667: $,^: push,=0
1.1 paf 668: 1:( { break=pop
669: 2:( ) pop
670: 3:{ } pop
671:
672: 000^111(2222)4444{33333}4000
1.9 paf 673: $,^: push,=0
1.1 paf 674: 1:( { break=pop
675: 2:( )=4
676: 3:{ }=4
677: 4:[^({]=pop
678: */
679:
1.206 paf 680: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
681: pc.source--;
682: if(pc.pos.col==0) {
683: --pc.pos.line; pc.pos.col=last_line_end_col;
684: } else
685: --pc.pos.col;
686:
687: }
688: static int yylex(YYSTYPE *lvalp, void *apc) {
689: register Parse_control& pc=*static_cast<Parse_control*>(apc);
690:
691: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 692: #define RC {result=c; goto break2; }
1.1 paf 693:
1.206 paf 694: register int c;
695: int result;
1.1 paf 696:
1.206 paf 697: if(pc.pending_state) {
698: result=pc.pending_state;
699: pc.pending_state=0;
1.1 paf 700: return result;
701: }
702:
1.206 paf 703: const char *begin=pc.source;
704: Pos begin_pos=pc.pos;
1.91 paf 705: const char *end;
1.67 paf 706: int skip_analized=0;
1.50 paf 707: while(true) {
1.206 paf 708: c=*(end=(pc.source++));
709: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 710:
1.208 paf 711: if(c=='\n')
1.206 paf 712: pc.pos_next_line();
1.208 paf 713: else
1.206 paf 714: pc.pos_next_c(c);
1.208 paf 715: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 716:
1.208 paf 717: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 718: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 719: // @SPECIAL
720: // ...
721: // @<here =
1.206 paf 722: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 723: } // continuing checks
1.206 paf 724: if(pc.ls==LS_USER) {
725: push_LS(pc, LS_DEF_NAME);
1.171 parser 726: RC;
1.175 paf 727: } else // @ in first column inside some code [when could that be?]
1.171 parser 728: result=BAD_METHOD_DECL_START;
729: goto break2;
1.209 paf 730: }
731: if(c=='^') {
1.206 paf 732: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 733: // handle after-method situation
1.206 paf 734: pop_LS(pc);
1.203 paf 735: result=EON;
736: skip_analized=-1; // return to punctuation afterwards to assure it's literality
737: goto break2;
738: }
1.206 paf 739: switch(pc.ls) {
1.169 parser 740: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
741: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
742: case LS_VAR_NAME_SIMPLE_WITH_COLON:
743: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
744: case LS_VAR_NAME_CURLY:
745: case LS_METHOD_NAME:
1.194 paf 746: case LS_USER_COMMENT:
1.169 parser 747: case LS_DEF_COMMENT:
748: // no literals in names, please
749: break;
750: default:
1.206 paf 751: switch(*pc.source) {
1.165 parser 752: // ^escaping some punctuators
1.48 paf 753: case '^': case '$': case ';':
1.126 paf 754: case '(': case ')':
1.48 paf 755: case '[': case ']':
756: case '{': case '}':
1.172 parser 757: case '"': case ':':
1.40 paf 758: if(end!=begin) {
1.206 paf 759: if(!pc.string_start)
760: pc.string_start=begin_pos;
1.40 paf 761: // append piece till ^
1.206 paf 762: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 763: }
1.63 paf 764: // reset piece 'begin' position & line
1.206 paf 765: begin=pc.source; // ->punctuation
766: begin_pos=pc.pos;
1.203 paf 767: // skip over _ after ^
1.206 paf 768: pc.source++; pc.pos.col++;
1.203 paf 769: // skip analysis = forced literal
770: continue;
1.114 paf 771:
772: // converting ^#HH into char(hex(HH))
773: case '#':
774: if(end!=begin) {
1.206 paf 775: if(!pc.string_start)
776: pc.string_start=begin_pos;
1.114 paf 777: // append piece till ^
1.206 paf 778: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 779: }
780: // #HH ?
1.206 paf 781: if(pc.source[0]=='#' && pc.source[1] && pc.source[2]) {
1.218 paf 782: char c=(char)(
1.206 paf 783: hex_value[(unsigned char)pc.source[1]]*0x10+
1.218 paf 784: hex_value[(unsigned char)pc.source[2]]);
1.206 paf 785: if(c==0) {
1.114 paf 786: result=BAD_HEX_LITERAL;
787: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
788: }
789: // append char(hex(HH))
1.206 paf 790: pc.string.append(c);
1.114 paf 791: // skip over ^#HH
1.206 paf 792: pc.source+=3;
793: pc.pos.col+=3;
1.114 paf 794: // reset piece 'begin' position & line
1.206 paf 795: begin=pc.source; // ->after ^#HH
796: begin_pos=pc.pos;
1.203 paf 797: // skip analysis = forced literal
1.114 paf 798: continue;
799: }
800: break;
1.1 paf 801: }
1.169 parser 802: break;
1.203 paf 803: }
1.169 parser 804: }
1.113 paf 805: // #comment start skipping
1.206 paf 806: if(c=='#' && pc.pos.col==1) {
1.112 paf 807: if(end!=begin) {
1.206 paf 808: if(!pc.string_start)
809: pc.string_start=begin_pos;
1.112 paf 810: // append piece till #
1.206 paf 811: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 812: }
813: // fall into COMMENT lexical state [wait for \n]
1.206 paf 814: push_LS(pc, LS_USER_COMMENT);
1.175 paf 815: continue;
1.112 paf 816: }
1.206 paf 817: switch(pc.ls) {
1.10 paf 818:
819: // USER'S = NOT OURS
1.1 paf 820: case LS_USER:
1.206 paf 821: case LS_NAME_SQUARE_PART: // name.[here].xxx
822: if(pc.trim_bof)
1.153 parser 823: switch(c) {
824: case '\n': case ' ': case '\t':
1.206 paf 825: begin=pc.source;
826: begin_pos=pc.pos;
1.152 parser 827: continue; // skip it
1.153 parser 828: default:
1.206 paf 829: pc.trim_bof=false;
1.152 parser 830: }
1.48 paf 831: switch(c) {
832: case '$':
1.206 paf 833: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 834: RC;
835: case '^':
1.206 paf 836: push_LS(pc, LS_METHOD_NAME);
1.48 paf 837: RC;
1.166 parser 838: case ']':
1.206 paf 839: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 840: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 841: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 842: RC;
843: }
1.160 parser 844: break;
1.166 parser 845: case '[': // $name.[co<[>de]
1.206 paf 846: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 847: lexical_brackets_nestage++;
1.161 parser 848: break;
1.112 paf 849: }
1.209 paf 850: if(pc.explicit_result && c)
851: switch(c) {
852: case '\n': case ' ': case '\t':
853: begin=pc.source;
854: begin_pos=pc.pos;
855: continue; // skip it
856: default:
857: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
858: goto break2;
859: }
1.112 paf 860: break;
861:
862: // #COMMENT
1.194 paf 863: case LS_USER_COMMENT:
1.112 paf 864: if(c=='\n') {
865: // skip comment
1.206 paf 866: begin=pc.source;
867: begin_pos=pc.pos;
1.112 paf 868:
1.206 paf 869: pop_LS(pc);
1.112 paf 870: continue;
1.1 paf 871: }
1.48 paf 872: break;
873:
874: // STRING IN EXPRESSION
1.145 parser 875: case LS_EXPRESSION_STRING_QUOTED:
876: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 877: switch(c) {
878: case '"':
1.145 parser 879: case '\'':
880: if(
1.206 paf 881: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
882: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
883: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 884: RC;
885: }
886: break;
1.48 paf 887: case '$':
1.206 paf 888: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 889: RC;
890: case '^':
1.206 paf 891: push_LS(pc, LS_METHOD_NAME);
1.48 paf 892: RC;
1.10 paf 893: }
894: break;
895:
896: // METHOD DEFINITION
897: case LS_DEF_NAME:
1.48 paf 898: switch(c) {
899: case '[':
1.206 paf 900: pc.ls=LS_DEF_PARAMS;
1.48 paf 901: RC;
902: case '\n':
1.206 paf 903: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 904: RC;
1.10 paf 905: }
906: break;
1.48 paf 907:
1.10 paf 908: case LS_DEF_PARAMS:
1.48 paf 909: switch(c) {
1.192 paf 910: case '$': // common error
1.193 paf 911: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
912: goto break2;
1.48 paf 913: case ';':
914: RC;
915: case ']':
1.206 paf 916: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 917: RC;
1.49 paf 918: case '\n': // wrong. bailing out
1.206 paf 919: pop_LS(pc);
1.48 paf 920: RC;
1.10 paf 921: }
922: break;
1.48 paf 923:
1.10 paf 924: case LS_DEF_LOCALS:
1.48 paf 925: switch(c) {
926: case '[':
927: case ';':
928: RC;
929: case ']':
1.206 paf 930: pc.ls=LS_DEF_COMMENT;
1.48 paf 931: RC;
932: case '\n': // wrong. bailing out
1.206 paf 933: pop_LS(pc);
1.48 paf 934: RC;
1.10 paf 935: }
936: break;
1.48 paf 937:
1.10 paf 938: case LS_DEF_COMMENT:
939: if(c=='\n') {
1.206 paf 940: pop_LS(pc);
1.48 paf 941: RC;
1.37 paf 942: }
943: break;
944:
1.48 paf 945: case LS_DEF_SPECIAL_BODY:
1.175 paf 946: if(c=='\n')
1.48 paf 947: RC;
948: break;
949:
950: // (EXPRESSION)
1.69 paf 951: case LS_VAR_ROUND:
952: case LS_METHOD_ROUND:
1.48 paf 953: switch(c) {
954: case ')':
955: if(--lexical_brackets_nestage==0)
1.206 paf 956: if(pc.ls==LS_METHOD_ROUND) // method round param ended
957: pc.ls=LS_METHOD_AFTER; // look for method end
958: else // pc.ls==LS_VAR_ROUND // variable constructor ended
959: pop_LS(pc); // return to normal life
1.48 paf 960: RC;
1.194 paf 961: case '#': // comment start skipping
962: if(end!=begin) {
1.206 paf 963: if(!pc.string_start)
964: pc.string_start=begin_pos;
1.194 paf 965: // append piece till #
1.206 paf 966: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 967: }
968: // fall into COMMENT lexical state [wait for \n]
1.206 paf 969: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 970: lexical_brackets_nestage=1;
971: continue;
1.48 paf 972: case '$':
1.206 paf 973: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 974: RC;
975: case '^':
1.206 paf 976: push_LS(pc, LS_METHOD_NAME);
1.48 paf 977: RC;
978: case '(':
979: lexical_brackets_nestage++;
980: RC;
1.67 paf 981: case '-':
1.206 paf 982: switch(*pc.source) {
1.127 paf 983: case 'f': // -f
1.67 paf 984: skip_analized=1;
985: result=FEXISTS;
1.127 paf 986: goto break2;
987: case 'd': // -d
988: skip_analized=1;
989: result=DEXISTS;
990: goto break2;
1.191 paf 991: default: // minus
1.67 paf 992: result=c;
1.127 paf 993: goto break2;
994: }
1.67 paf 995: goto break2;
1.173 paf 996: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 997: case '~':
1.48 paf 998: case ';':
999: RC;
1.193 paf 1000: case '&': case '|':
1.206 paf 1001: if(*pc.source==c) { // && ||
1.193 paf 1002: result=c=='&'?LAND:LOR;
1.67 paf 1003: skip_analized=1;
1.58 paf 1004: } else
1005: result=c;
1006: goto break2;
1.193 paf 1007: case '!':
1.206 paf 1008: switch(pc.source[0]) {
1.193 paf 1009: case '|': // !| !||
1010: skip_analized=1;
1.206 paf 1011: if(pc.source[1]=='|') {
1.193 paf 1012: skip_analized++;
1013: result=LXOR;
1014: } else
1015: result=NXOR;
1016: goto break2;
1017: case '=': // !=
1018: skip_analized=1;
1019: result=NNE;
1020: goto break2;
1021: }
1022: RC;
1.195 paf 1023:
1024: case '<': // <<, <=, <
1.206 paf 1025: switch(*pc.source) {
1.195 paf 1026: case '<': // <[<]
1027: skip_analized=1; result=NSL; break;
1028: case '=': // <[=]
1029: skip_analized=1; result=NLE; break;
1030: default: // <[]
1031: result=c; break;
1032: }
1033: goto break2;
1034: case '>': // >>, >=, >
1.206 paf 1035: switch(*pc.source) {
1.195 paf 1036: case '>': // >[>]
1037: skip_analized=1; result=NSR; break;
1038: case '=': // >[=]
1039: skip_analized=1; result=NGE; break;
1040: default: // >[]
1041: result=c; break;
1042: }
1043: goto break2;
1044: case '=': // ==
1.206 paf 1045: switch(*pc.source) {
1.195 paf 1046: case '=': // =[=]
1047: skip_analized=1; result=NEQ; break;
1048: default: // =[]
1049: result=c; break; // not used now
1050: }
1.58 paf 1051: goto break2;
1.195 paf 1052:
1.48 paf 1053: case '"':
1.206 paf 1054: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1055: RC;
1056: case '\'':
1.206 paf 1057: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1058: RC;
1.50 paf 1059: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1060: if(end==begin) // right after whitespace
1.206 paf 1061: if(isspace(pc.source[1])) {
1062: switch(*pc.source) {
1.117 paf 1063: // case '?': // ok [and bad cases, yacc would bark at them]
1064: case 't': // lt gt [et nt]
1065: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1066: skip_analized=1;
1067: goto break2;
1068: case 'e': // le ge ne [ee]
1069: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1070: skip_analized=1;
1071: goto break2;
1072: case 'q': // eq [lq gq nq]
1073: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1074: skip_analized=1;
1075: goto break2;
1076: }
1.67 paf 1077: }
1078: break;
1079: case 'i':
1080: if(end==begin) // right after whitespace
1.206 paf 1081: if(isspace(pc.source[1])) {
1082: switch(pc.source[0]) {
1.117 paf 1083: case 'n': // in
1.95 paf 1084: skip_analized=1;
1085: result=IN;
1086: goto break2;
1.117 paf 1087: case 's': // is
1.95 paf 1088: skip_analized=1;
1089: result=IS;
1090: goto break2;
1091: }
1.67 paf 1092: }
1093: break;
1094: case 'd':
1095: if(end==begin) // right after whitespace
1.206 paf 1096: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.67 paf 1097: skip_analized=2;
1098: result=DEF;
1.58 paf 1099: goto break2;
1.50 paf 1100: }
1.48 paf 1101: break;
1.216 paf 1102: case 't':
1103: if(end==begin) // right after whitespace
1104: if(pc.source[0]=='r' && pc.source[1]=='u' && pc.source[2]=='e') { // def
1105: skip_analized=3;
1106: result=LITERAL_TRUE;
1107: goto break2;
1108: }
1109: break;
1110: case 'f':
1111: if(end==begin) // right after whitespace
1112: if(pc.source[0]=='a' && pc.source[1]=='l' && pc.source[2]=='s' && pc.source[3]=='e') { // def
1113: skip_analized=4;
1114: result=LITERAL_FALSE;
1115: goto break2;
1116: }
1117: break;
1.48 paf 1118: case ' ': case '\t': case '\n':
1.63 paf 1119: if(end!=begin) { // there were a string after previous operator?
1120: result=0; // return that string
1121: goto break2;
1.48 paf 1122: }
1.63 paf 1123: // that's a leading|traling space or after-operator-space
1124: // ignoring it
1125: // reset piece 'begin' position & line
1.206 paf 1126: begin=pc.source; // after whitespace char
1127: begin_pos=pc.pos;
1.48 paf 1128: continue;
1.1 paf 1129: }
1130: break;
1.194 paf 1131: case LS_EXPRESSION_COMMENT:
1132: if(c=='(')
1133: lexical_brackets_nestage++;
1134:
1.206 paf 1135: switch(*pc.source) {
1.194 paf 1136: case '\n': case ')':
1.206 paf 1137: if(*pc.source==')')
1.194 paf 1138: if(--lexical_brackets_nestage!=0)
1139: continue;
1140:
1141: // skip comment
1.206 paf 1142: begin=pc.source;
1143: begin_pos=pc.pos;
1.194 paf 1144:
1.206 paf 1145: pop_LS(pc);
1.194 paf 1146: continue;
1147: }
1148: break;
1.1 paf 1149:
1.10 paf 1150: // VARIABLE GET/PUT/WITH
1.166 parser 1151: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1152: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1153: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1154: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1155: if(
1.206 paf 1156: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1157: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1158: // name in expr ends also before
1.48 paf 1159: switch(c) {
1.181 paf 1160: // expression minus
1.92 paf 1161: case '-':
1.181 paf 1162: // expression integer division
1163: case '\\':
1.206 paf 1164: pop_LS(pc);
1165: pc.ungetc();
1.48 paf 1166: result=EON;
1167: goto break2;
1168: }
1169: }
1.166 parser 1170: if(
1.206 paf 1171: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1172: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1173: // name already has ':', stop before next
1174: switch(c) {
1175: case ':':
1.206 paf 1176: pop_LS(pc);
1177: pc.ungetc();
1.142 parser 1178: result=EON;
1179: goto break2;
1180: }
1181: }
1.48 paf 1182: switch(c) {
1183: case 0:
1184: case ' ': case '\t': case '\n':
1185: case ';':
1.126 paf 1186: case ']': case '}': case ')':
1187: case '"': case '\'':
1.139 parser 1188: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1189: case '+': case '*': case '/': case '%':
1190: case '&': case '|':
1191: case '=': case '!':
1.99 paf 1192: // common delimiters
1.190 paf 1193: case ',': case '?': case '#':
1.220 paf 1194: // mysql column separators
1195: case '`':
1.139 parser 1196: // before call
1197: case '^':
1.206 paf 1198: pop_LS(pc);
1199: pc.ungetc();
1.13 paf 1200: result=EON;
1.1 paf 1201: goto break2;
1.48 paf 1202: case '[':
1.162 parser 1203: // $name.<[>code]
1.206 paf 1204: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1205: end[-1]=='$'/*was start of get*/ ||
1206: end[-1]==':'/*was class name delim */ ||
1207: end[-1]=='.'/*was name delim */
1.162 parser 1208: )) {
1.206 paf 1209: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1210: lexical_brackets_nestage=1;
1211: RC;
1212: }
1.206 paf 1213: pc.ls=LS_VAR_SQUARE;
1.1 paf 1214: lexical_brackets_nestage=1;
1.48 paf 1215: RC;
1216: case '{':
1217: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1218: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1219: } else {
1.206 paf 1220: pc.ls=LS_VAR_CURLY;
1.48 paf 1221: lexical_brackets_nestage=1;
1222: }
1.69 paf 1223:
1.48 paf 1224: RC;
1225: case '(':
1.206 paf 1226: pc.ls=LS_VAR_ROUND;
1.1 paf 1227: lexical_brackets_nestage=1;
1.48 paf 1228: RC;
1229: case '.': // name part delim
1230: case '$': // name part subvar
1.160 parser 1231: case ':': // class<:>name
1.166 parser 1232: // go to _WITHOUT_COLON state variant...
1.206 paf 1233: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1234: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1235: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1236: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1237: // ...stop before next ':'
1.48 paf 1238: RC;
1.1 paf 1239: }
1240: break;
1.48 paf 1241:
1.1 paf 1242: case LS_VAR_NAME_CURLY:
1.48 paf 1243: switch(c) {
1.162 parser 1244: case '[':
1.166 parser 1245: // ${name.<[>code]}
1.206 paf 1246: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1247: lexical_brackets_nestage=1;
1248: RC;
1.48 paf 1249: case '}': // ${name} finished, restoring LS
1.206 paf 1250: pop_LS(pc);
1.48 paf 1251: RC;
1252: case '.': // name part delim
1253: case '$': // name part subvar
1254: case ':': // ':name' or 'class:name'
1255: RC;
1.1 paf 1256: }
1257: break;
1.48 paf 1258:
1259: case LS_VAR_SQUARE:
1260: switch(c) {
1261: case '$':
1.206 paf 1262: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1263: RC;
1264: case '^':
1.206 paf 1265: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1266: RC;
1267: case ']':
1.1 paf 1268: if(--lexical_brackets_nestage==0) {
1.206 paf 1269: pop_LS(pc);
1.48 paf 1270: RC;
1.1 paf 1271: }
1.48 paf 1272: break;
1273: case ';': // operator_or_fmt;value delim
1274: RC;
1275: case '[':
1276: lexical_brackets_nestage++;
1277: break;
1.1 paf 1278: }
1279: break;
1.48 paf 1280:
1.1 paf 1281: case LS_VAR_CURLY:
1.48 paf 1282: switch(c) {
1283: case '$':
1.206 paf 1284: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1285: RC;
1286: case '^':
1.206 paf 1287: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1288: RC;
1289: case '}':
1.1 paf 1290: if(--lexical_brackets_nestage==0) {
1.206 paf 1291: pop_LS(pc);
1.48 paf 1292: RC;
1.1 paf 1293: }
1.48 paf 1294: break;
1295: case '{':
1.1 paf 1296: lexical_brackets_nestage++;
1.48 paf 1297: break;
1298: }
1.1 paf 1299: break;
1300:
1.10 paf 1301: // METHOD CALL
1.1 paf 1302: case LS_METHOD_NAME:
1.48 paf 1303: switch(c) {
1304: case '[':
1.166 parser 1305: // ^name.<[>code].xxx
1.206 paf 1306: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1307: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1308: end[-1]==':'/*was class name delim */ ||
1309: end[-1]=='.'/*was name delim */
1.162 parser 1310: )) {
1.206 paf 1311: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1312: lexical_brackets_nestage=1;
1313: RC;
1314: }
1.206 paf 1315: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1316: lexical_brackets_nestage=1;
1.48 paf 1317: RC;
1318: case '{':
1.206 paf 1319: pc.ls=LS_METHOD_CURLY;
1.1 paf 1320: lexical_brackets_nestage=1;
1.48 paf 1321: RC;
1.69 paf 1322: case '(':
1.206 paf 1323: pc.ls=LS_METHOD_ROUND;
1.69 paf 1324: lexical_brackets_nestage=1;
1325: RC;
1.48 paf 1326: case '.': // name part delim
1327: case '$': // name part subvar
1328: case ':': // ':name' or 'class:name'
1.170 parser 1329: case '^': // ^abc^xxx wrong. bailing out
1330: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1331: case ' ': // ^if ( wrong. bailing out
1.48 paf 1332: RC;
1.1 paf 1333: }
1334: break;
1.48 paf 1335:
1336: case LS_METHOD_SQUARE:
1337: switch(c) {
1338: case '$':
1.206 paf 1339: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1340: RC;
1341: case '^':
1.206 paf 1342: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1343: RC;
1344: case ';': // param delim
1345: RC;
1346: case ']':
1.1 paf 1347: if(--lexical_brackets_nestage==0) {
1.206 paf 1348: pc.ls=LS_METHOD_AFTER;
1.48 paf 1349: RC;
1.1 paf 1350: }
1.48 paf 1351: break;
1352: case '[':
1.1 paf 1353: lexical_brackets_nestage++;
1.48 paf 1354: break;
1355: }
1.1 paf 1356: break;
1.48 paf 1357:
1.1 paf 1358: case LS_METHOD_CURLY:
1.48 paf 1359: switch(c) {
1360: case '$':
1.206 paf 1361: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1362: RC;
1363: case '^':
1.206 paf 1364: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1365: RC;
1366: case ';': // param delim
1.48 paf 1367: RC;
1368: case '}':
1.1 paf 1369: if(--lexical_brackets_nestage==0) {
1.206 paf 1370: pc.ls=LS_METHOD_AFTER;
1.48 paf 1371: RC;
1.1 paf 1372: }
1.48 paf 1373: break;
1374: case '{':
1.1 paf 1375: lexical_brackets_nestage++;
1.48 paf 1376: break;
1377: }
1.209 paf 1378: if(pc.explicit_result && c)
1379: switch(c) {
1380: case '\n': case ' ': case '\t':
1381: begin=pc.source;
1382: begin_pos=pc.pos;
1383: continue; // skip it
1384: default:
1385: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
1386: goto break2;
1387: }
1.1 paf 1388: break;
1.48 paf 1389:
1.1 paf 1390: case LS_METHOD_AFTER:
1.69 paf 1391: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1392: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1393: lexical_brackets_nestage=1;
1.48 paf 1394: RC;
1.1 paf 1395: }
1.69 paf 1396: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1397: pc.ls=LS_METHOD_CURLY;
1.69 paf 1398: lexical_brackets_nestage=1;
1399: RC;
1400: }
1401: if(c=='(') {/* ]( }( )( */
1.206 paf 1402: pc.ls=LS_METHOD_ROUND;
1.1 paf 1403: lexical_brackets_nestage=1;
1.48 paf 1404: RC;
1.1 paf 1405: }
1.206 paf 1406: pop_LS(pc);
1407: pc.ungetc();
1.13 paf 1408: result=EON;
1.1 paf 1409: goto break2;
1410: }
1.9 paf 1411: if(c==0) {
1.1 paf 1412: result=-1;
1413: break;
1414: }
1415: }
1416:
1417: break2:
1.59 paf 1418: if(end!=begin) { // there is last piece?
1419: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1420: // strip last \n
1.10 paf 1421: end--;
1.137 parser 1422: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1423: end--;
1.59 paf 1424: }
1.206 paf 1425: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1426: if(!pc.string_start)
1427: pc.string_start=begin_pos;
1.59 paf 1428: // append it
1.206 paf 1429: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1430: }
1.59 paf 1431: }
1.206 paf 1432: if(!pc.string.is_empty()) { // something accumulated?
1433: // create STRING value: array of OP_VALUE+origin+vstring
1434: *lvalp=VL(
1435: new VString(*new String(pc.string, String::L_CLEAN)),
1436: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1437: // new pieces storage
1.206 paf 1438: pc.string.clear();
1439: pc.string_start.clear();
1.58 paf 1440: // make current result be pending for next call, return STRING for now
1.206 paf 1441: pc.pending_state=result; result=STRING;
1.58 paf 1442: }
1.67 paf 1443: if(skip_analized) {
1.206 paf 1444: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1445: }
1.58 paf 1446: return result;
1.1 paf 1447: }
1448:
1.206 paf 1449: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1450: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1451: return 1;
1.110 paf 1452: }
1.1 paf 1453:
1.110 paf 1454: static void yyprint(FILE *file, int type, YYSTYPE value) {
1455: if(type==STRING)
1.206 paf 1456: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1457: }
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