Annotation of parser3/src/main/compile.y, revision 1.214
1.168 parser 1: %{
1.105 paf 2: /** @file
1.106 paf 3: Parser: compiler(lexical parser and grammar).
4:
1.204 paf 5: Copyright (c) 2001, 2003 ArtLebedev Group (http://www.artlebedev.com)
1.168 parser 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.106 paf 7:
1.214 ! paf 8: $Id: compile.y,v 1.213 2004/04/06 14:17:17 paf 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"
1.1 paf 44:
1.206 paf 45: // forwards
46:
47: static int real_yyerror(Parse_control* pc, char* s);
48: static void yyprint(FILE* file, int type, YYSTYPE value);
49: static int yylex(YYSTYPE* lvalp, void* pc);
1.1 paf 50:
1.8 paf 51: // local convinient inplace typecast & var
1.205 paf 52: #undef PC
1.206 paf 53: #define PC (*(Parse_control *)pc)
54: #undef POOL
1.114 paf 55: #define POOL (*PC.pool)
1.107 paf 56: #ifndef DOXYGEN
1.1 paf 57: %}
58:
59: %pure_parser
60:
1.13 paf 61: %token EON
1.4 paf 62: %token STRING
1.1 paf 63: %token BOGUS
1.55 paf 64:
1.58 paf 65: %token BAD_STRING_COMPARISON_OPERATOR
1.114 paf 66: %token BAD_HEX_LITERAL
1.171 parser 67: %token BAD_METHOD_DECL_START
1.193 paf 68: %token BAD_METHOD_PARAMETER_NAME_CHARACTER
1.209 paf 69: %token BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE
1.58 paf 70:
1.59 paf 71: %token LAND "&&"
1.58 paf 72: %token LOR "||"
1.193 paf 73: %token LXOR "!||"
74: %token NXOR "!|"
1.58 paf 75:
76: %token NLE "<="
77: %token NGE ">="
78: %token NEQ "=="
79: %token NNE "!="
1.195 paf 80: %token NSL "<<"
81: %token NSR ">>"
1.58 paf 82:
83: %token SLT "lt"
84: %token SGT "gt"
85: %token SLE "le"
86: %token SGE "ge"
87: %token SEQ "eq"
88: %token SNE "ne"
89:
1.67 paf 90: %token DEF "def"
91: %token IN "in"
92: %token FEXISTS "-f"
1.127 paf 93: %token DEXISTS "-d"
1.95 paf 94: %token IS "is"
1.67 paf 95:
1.57 paf 96: /* logical */
1.193 paf 97: %left "!||"
1.57 paf 98: %left "||"
99: %left "&&"
1.131 paf 100: %left '<' '>' "<=" ">=" "lt" "gt" "le" "ge"
101: %left "==" "!=" "eq" "ne"
102: %left "is" "def" "in" "-f" "-d"
1.57 paf 103:
104: /* bitwise */
1.193 paf 105: %left "!|"
1.131 paf 106: %left '|'
107: %left '&'
1.202 paf 108: %left "<<" ">>"
1.57 paf 109:
1.56 paf 110: /* numerical */
1.202 paf 111: %left '+' '-'
112: %left '*' '/' '\\' '%'
113: %left NUNARY /* unary - + */
114:
115: /* out-of-group */
116: %left '~' /* bitwise */
117: %left '!' /* logical */
1.1 paf 118:
119: %%
1.195 paf 120: all:
1.10 paf 121: one_big_piece {
1.206 paf 122: Method& method=*new Method(Method::CT_ANY,
1.81 paf 123: 0, 0, /*min, max numbered_params_count*/
1.75 paf 124: 0/*param_names*/, 0/*local_names*/,
125: $1/*parser_code*/, 0/*native_code*/);
1.206 paf 126: PC.cclass->add_method(PC.alias_method(main_method_name), method);
1.10 paf 127: }
128: | methods;
129:
130: methods: method | methods method;
131: one_big_piece: maybe_codes;
132:
1.34 paf 133: method: control_method | code_method;
134:
135: control_method: '@' STRING '\n'
1.132 paf 136: maybe_control_strings {
1.206 paf 137: const String& command=*LA2S(*$2);
1.34 paf 138: YYSTYPE strings_code=$4;
1.206 paf 139: if(strings_code->count()<1*OPERATIONS_PER_OPVALUE) {
1.114 paf 140: strcpy(PC.error, "@");
141: strcat(PC.error, command.cstr());
142: strcat(PC.error, " is empty");
1.37 paf 143: YYERROR;
144: }
1.74 paf 145: if(command==CLASS_NAME) {
1.188 paf 146: if(PC.cclass->base_class()) { // already changed from default?
1.114 paf 147: strcpy(PC.error, "class already have a name '");
148: strncat(PC.error, PC.cclass->name().cstr(), 100);
149: strcat(PC.error, "'");
1.73 paf 150: YYERROR;
151: }
1.206 paf 152: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.73 paf 153: // new class' name
1.206 paf 154: const String& name=*LA2S(*strings_code);
1.73 paf 155: // creating the class
1.206 paf 156: VStateless_class* cclass=new VClass;
157: PC.cclass=cclass;
158: PC.cclass->set_name(name);
1.73 paf 159: // append to request's classes
1.206 paf 160: PC.request.classes().put(name, cclass);
1.73 paf 161: } else {
1.206 paf 162: strcpy(PC.error, "@"CLASS_NAME" must contain only one line with class name (contains more then one)");
1.34 paf 163: YYERROR;
164: }
1.130 paf 165: } else if(command==USE_CONTROL_METHOD_NAME) {
1.206 paf 166: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE)
167: PC.request.use_file(PC.request.main_class, *LA2S(*strings_code, i));
1.130 paf 168: } else if(command==BASE_NAME) {
1.188 paf 169: if(PC.cclass->base_class()) { // already changed from default?
1.130 paf 170: strcpy(PC.error, "class already have a base '");
1.188 paf 171: strncat(PC.error, PC.cclass->base_class()->name().cstr(), 100);
1.130 paf 172: strcat(PC.error, "'");
173: YYERROR;
174: }
1.206 paf 175: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
176: const String& base_name=*LA2S(*strings_code);
177: if(Value* base_class_value=PC.request.classes().get(base_name)) {
178: // @CLASS == @BASE sanity check
179: if(VStateless_class *base_class=base_class_value->get_class()) {
180: if(PC.cclass==base_class) {
181: strcpy(PC.error, "@"CLASS_NAME" equals @"BASE_NAME);
182: YYERROR;
183: }
184: PC.cclass->get_class()->set_base(base_class);
185: } else { // they asked to derive from a class without methods ['env' & co]
186: strcpy(PC.error, base_name.cstr());
187: strcat(PC.error, ": you can not derive from this class in @"BASE_NAME);
188: YYERROR;
189: }
190: } else {
1.130 paf 191: strcpy(PC.error, base_name.cstr());
192: strcat(PC.error, ": undefined class in @"BASE_NAME);
1.73 paf 193: YYERROR;
194: }
1.34 paf 195: } else {
1.130 paf 196: strcpy(PC.error, "@"BASE_NAME" must contain sole name");
1.34 paf 197: YYERROR;
198: }
1.130 paf 199: } else {
200: strcpy(PC.error, "'");
201: strncat(PC.error, command.cstr(), MAX_STRING/2);
202: strcat(PC.error, "' invalid special name. valid names are "
203: "'"CLASS_NAME"', '"USE_CONTROL_METHOD_NAME"' and '"BASE_NAME"'");
204: YYERROR;
1.34 paf 205: }
206: };
1.132 paf 207: maybe_control_strings: empty | control_strings;
1.206 paf 208: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2) };
1.37 paf 209: control_string: maybe_string '\n';
210: maybe_string: empty | STRING;
1.34 paf 211:
1.208 paf 212: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n' {
213: PC.explicit_result=false;
1.206 paf 214: const String& name=*LA2S(*$2);
1.10 paf 215:
216: YYSTYPE params_names_code=$3;
1.206 paf 217: ArrayString* params_names=0;
218: if(int size=params_names_code->count()) {
219: params_names=new ArrayString;
220: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
221: *params_names+=LA2S(*params_names_code, i);
1.75 paf 222: }
1.10 paf 223:
224: YYSTYPE locals_names_code=$4;
1.206 paf 225: ArrayString* locals_names=0;
226: if(int size=locals_names_code->count()) {
227: locals_names=new ArrayString;
1.208 paf 228: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE) {
229: const String* local_name=LA2S(*locals_names_code, i);
230: if(*local_name==RESULT_VAR_NAME)
231: PC.explicit_result=true;
232: else
233: *locals_names+=local_name;
234: }
1.75 paf 235: }
1.10 paf 236:
1.208 paf 237: Method* method=new Method(
1.206 paf 238: //name,
1.122 paf 239: Method::CT_ANY,
1.81 paf 240: 0, 0/*min,max numbered_params_count*/,
1.76 paf 241: params_names, locals_names,
1.208 paf 242: 0/*to be filled later in next {} */, 0);
243: PC.cclass->add_method(PC.alias_method(name), *method);
244: *reinterpret_cast<Method**>(&$$)=method;
245:
246: // todo: check [][;result;]
247: } maybe_codes {
248: // fill in the code
249: reinterpret_cast<Method*>($7)->parser_code=$8;
1.8 paf 250: };
1.10 paf 251:
252: maybe_bracketed_strings: empty | bracketed_maybe_strings;
253: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
254: maybe_strings: empty | strings;
1.206 paf 255: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3) };
1.10 paf 256:
257: maybe_comment: empty | STRING;
1.1 paf 258:
259: /* codes */
260:
1.10 paf 261: maybe_codes: empty | codes;
262:
1.206 paf 263: codes: code | codes code { $$=$1; P(*$$, *$2) };
1.81 paf 264: code: write_string | action;
1.209 paf 265: action: get | put | call;
1.1 paf 266:
267: /* get */
268:
1.64 paf 269: get: get_value {
1.184 paf 270: $$=$1; /* stack: resulting value */
1.206 paf 271: changetail_or_append(*$$,
1.186 paf 272: OP_GET_ELEMENT, false, /*->*/OP_GET_ELEMENT__WRITE,
273: /*or */OP_WRITE_VALUE
1.184 paf 274: ); /* value=pop; wcontext.write(value) */
1.1 paf 275: };
1.163 parser 276: get_value: '$' get_name_value { $$=$2 };
1.64 paf 277: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 278: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 279: name_without_curly_rdive:
280: name_without_curly_rdive_read
281: | name_without_curly_rdive_class;
1.19 paf 282: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 283: $$=N();
284: ArrayOperation* diving_code=$1;
285: const String* first_name=LA2S(*diving_code);
1.179 paf 286: // self.xxx... -> xxx...
1.206 paf 287: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 288: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.206 paf 289: O(*yyval, OP_WITH_SELF); /* stack: starting context */
290: P(*yyval, *diving_code,
1.22 paf 291: /* skip over... */
1.206 paf 292: diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.22 paf 293: } else {
1.206 paf 294: O(*yyval, OP_WITH_READ); /* stack: starting context */
1.179 paf 295:
1.201 paf 296: // ^if ELEMENT -> ^if ELEMENT_OR_OPERATOR
1.206 paf 297: // OP_VALUE+origin+string+OP_GET_ELEMENT. -> OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
298: if(PC.in_call_value && diving_code->count()==4)
299: diving_code->put(4-1, OP_GET_ELEMENT_OR_OPERATOR);
300: P(*$$, *diving_code);
1.22 paf 301: }
302: /* diving code; stack: current context */
1.1 paf 303: };
1.206 paf 304: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2) };
305: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2) };
1.1 paf 306:
307: /* put */
308:
1.81 paf 309: put: '$' name_expr_wdive construct {
1.20 paf 310: $$=$2; /* stack: context,name */
1.206 paf 311: P(*$$, *$3); /* stack: context,name,constructor_value */
1.20 paf 312: };
1.44 paf 313: name_expr_wdive:
1.157 parser 314: name_expr_wdive_root
315: | name_expr_wdive_write
1.44 paf 316: | name_expr_wdive_class;
1.157 parser 317: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 318: $$=N();
319: ArrayOperation* diving_code=$1;
320: const String* first_name=LA2S(*diving_code);
1.179 paf 321: // $self.xxx... -> $xxx...
1.206 paf 322: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 323: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.206 paf 324: O(*$$, OP_WITH_SELF); /* stack: starting context */
325: P(*$$, *diving_code,
1.23 paf 326: /* skip over... */
1.206 paf 327: diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.23 paf 328: } else {
1.206 paf 329: O(*$$, OP_WITH_ROOT); /* stack: starting context */
330: P(*$$, *diving_code);
1.23 paf 331: }
332: /* diving code; stack: current context */
1.156 parser 333: };
1.157 parser 334: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 335: $$=N();
336: O(*$$, OP_WITH_WRITE); /* stack: starting context */
337: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 338: };
1.206 paf 339: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2) };
1.20 paf 340:
1.149 parser 341: construct:
1.163 parser 342: construct_square
343: | construct_round
344: | construct_curly
1.149 parser 345: ;
1.211 paf 346: construct_square: '[' {
347: // allow $result_or_other_variable[ letters here any time ]
348: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
349: } any_constructor_code_value {
1.213 paf 350: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.211 paf 351: } ']' {
1.149 parser 352: // stack: context, name
1.211 paf 353: $$=$3; // stack: context, name, value
1.206 paf 354: O(*$$, OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 355: }
356: ;
1.149 parser 357: construct_round: '(' expr_value ')' {
1.206 paf 358: $$=N();
359: O(*$$, OP_PREPARE_TO_EXPRESSION);
1.149 parser 360: // stack: context, name
1.206 paf 361: P(*$$, *$2); // stack: context, name, value
362: O(*$$, OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 363: }
1.52 paf 364: ;
1.149 parser 365: construct_curly: '{' maybe_codes '}' {
366: // stack: context, name
1.206 paf 367: $$=N();
368: OA(*$$, OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 369: };
370:
1.55 paf 371: any_constructor_code_value:
1.157 parser 372: void_value /* optimized $var[] case */
1.52 paf 373: | STRING /* optimized $var[STRING] case */
1.55 paf 374: | constructor_code_value /* $var[something complex] */
1.1 paf 375: ;
1.55 paf 376: constructor_code_value: constructor_code {
1.206 paf 377: $$=N();
378: OA(*$$, OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 379: /* some code that writes to that context */
380: /* context=pop; stack: context.value() */
1.1 paf 381: };
1.55 paf 382: constructor_code: codes__excluding_sole_str_literal;
1.206 paf 383: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 384:
1.1 paf 385: /* call */
386:
1.66 paf 387: call: call_value {
388: $$=$1; /* stack: value */
1.206 paf 389: changetail_or_append(*$$,
1.186 paf 390: OP_CALL, true, /*->*/ OP_CALL__WRITE,
391: /*or */OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.66 paf 392: };
1.177 paf 393: call_value: '^' {
1.180 paf 394: PC.in_call_value=true;
1.177 paf 395: }
396: call_name {
1.180 paf 397: PC.in_call_value=false;
1.177 paf 398: }
1.154 parser 399: store_params EON { /* ^field.$method{vasya} */
400: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 401:
1.154 parser 402: YYSTYPE params_code=$5;
1.206 paf 403: if(params_code->count()==4) { // probably [] case. [OP_VALUE+origin+Void+STORE_PARAM]
404: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.140 parser 405: if(!value->is_defined()) // value is VVoid?
1.123 paf 406: params_code=0; // ^zzz[] case. don't append lone empty param.
1.186 paf 407: }
408: /* stack: context, method_junction */
1.206 paf 409: OA(*$$, OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
1.1 paf 410: };
411:
1.43 paf 412: call_name: name_without_curly_rdive;
1.38 paf 413:
1.206 paf 414: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2) };
1.69 paf 415: store_param:
416: store_square_param
417: | store_round_param
418: | store_curly_param
1.31 paf 419: ;
1.210 paf 420: store_square_param: '[' {
1.211 paf 421: // allow ^call[ letters here any time ]
1.210 paf 422: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
423: } store_code_param_parts {
1.213 paf 424: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.210 paf 425: } ']' {$$=$3};
1.69 paf 426: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 427: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 428: store_code_param_parts:
429: store_code_param_part
1.206 paf 430: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 431: ;
432: store_expr_param_parts:
433: store_expr_param_part
1.206 paf 434: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 435: ;
1.94 paf 436: store_curly_param_parts:
437: store_curly_param_part
1.206 paf 438: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3) }
1.94 paf 439: ;
1.120 paf 440: store_code_param_part: code_param_value {
1.32 paf 441: $$=$1;
1.206 paf 442: O(*$$, OP_STORE_PARAM);
1.120 paf 443: };
1.214 ! paf 444: store_expr_param_part: expr_value {
! 445: YYSTYPE expr_code=$1;
! 446: if(expr_code->count()==3) { // optimizing (double) case. [OP_VALUE+origin+Double]
! 447: $$=expr_code;
! 448: O(*$$, OP_STORE_PARAM); // no evaluating
! 449: } else {
! 450: ArrayOperation* code=N();
! 451: O(*code, OP_PREPARE_TO_EXPRESSION);
! 452: P(*code, *expr_code);
! 453: O(*code, OP_WRITE_EXPR_RESULT);
! 454: $$=N();
! 455: OA(*$$, OP_EXPR_CODE__STORE_PARAM, code);
! 456: }
1.69 paf 457: };
1.94 paf 458: store_curly_param_part: maybe_codes {
1.206 paf 459: $$=N();
460: OA(*$$, OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 461: };
1.120 paf 462: code_param_value:
1.157 parser 463: void_value /* optimized [;...] case */
1.120 paf 464: | STRING /* optimized [STRING] case */
465: | constructor_code_value /* [something complex] */
466: ;
1.1 paf 467:
468: /* name */
469:
1.206 paf 470: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 471:
1.206 paf 472: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 473: name_step: name_advance1 '.';
474: name_advance1: name_expr_value {
1.177 paf 475: // we know that name_advance1 not called from ^xxx context
476: // so we'll not check for operator call possibility as we do in name_advance2
477:
1.1 paf 478: /* stack: context */
479: $$=$1; /* stack: context,name */
1.206 paf 480: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 481: };
482: name_advance2: name_expr_value {
483: /* stack: context */
484: $$=$1; /* stack: context,name */
1.206 paf 485: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 486: }
1.4 paf 487: | STRING BOGUS
1.1 paf 488: ;
489: name_expr_value:
1.4 paf 490: STRING /* subname_is_const */
1.1 paf 491: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 492: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 493: | name_square_code_value /* [codes] */
1.1 paf 494: ;
495: name_expr_subvar_value: '$' subvar_ref_name_rdive {
496: $$=$2;
1.206 paf 497: O(*$$, OP_GET_ELEMENT);
1.1 paf 498: };
1.4 paf 499: name_expr_with_subvar_value: STRING subvar_get_writes {
1.206 paf 500: ArrayOperation* code;
1.183 paf 501: {
1.206 paf 502: change_string_literal_to_write_string_literal(*(code=$1));
503: P(*code, *$2);
1.183 paf 504: }
1.206 paf 505: $$=N();
506: OA(*$$, OP_STRING_POOL, code);
1.1 paf 507: };
1.212 paf 508: name_square_code_value: '[' {
509: // allow $result_or_other_variable[ letters here any time ]
510: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
511: } codes {
1.213 paf 512: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.212 paf 513: } ']' {
1.206 paf 514: $$=N();
1.212 paf 515: OA(*$$, OP_OBJECT_POOL, $3); /* stack: empty write context */
1.183 paf 516: /* some code that writes to that context */
517: /* context=pop; stack: context.value() */
1.160 parser 518: };
1.154 parser 519: subvar_ref_name_rdive: STRING {
1.206 paf 520: $$=N();
521: O(*$$, OP_WITH_READ);
522: P(*$$, *$1);
1.1 paf 523: };
1.206 paf 524: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 525: subvar__get_write: '$' subvar_ref_name_rdive {
526: $$=$2;
1.206 paf 527: O(*$$, OP_GET_ELEMENT__WRITE);
1.42 paf 528: };
529:
1.154 parser 530: class_prefix:
531: class_static_prefix
532: | class_constructor_prefix
533: ;
1.155 parser 534: class_static_prefix: STRING ':' {
535: $$=$1; // stack: class name string
1.206 paf 536: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
537: if(VStateless_class* base=PC.cclass->base_class()) {
538: change_string_literal_value(*$$, base->name());
1.189 paf 539: } else {
540: strcpy(PC.error, "no base class declared");
541: YYERROR;
542: }
543: }
1.206 paf 544: O(*$$, OP_GET_CLASS);
1.155 parser 545: };
546: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 547: $$=$1;
1.180 paf 548: if(!PC.in_call_value) {
1.154 parser 549: strcpy(PC.error, ":: not allowed here");
550: YYERROR;
551: }
1.206 paf 552: O(*$$, OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 553: };
554:
1.53 paf 555:
1.56 paf 556: /* expr */
1.53 paf 557:
1.214 ! paf 558: expr_value: expr;
1.56 paf 559: expr:
1.214 ! paf 560: double_or_STRING
1.64 paf 561: | get_value
1.66 paf 562: | call_value
1.64 paf 563: | '"' string_inside_quotes_value '"' { $$ = $2; }
1.145 parser 564: | '\'' string_inside_quotes_value '\'' { $$ = $2; }
1.60 paf 565: | '(' expr ')' { $$ = $2; }
566: /* stack: operand // stack: @operand */
1.206 paf 567: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP_NEG) }
1.202 paf 568: | '+' expr %prec NUNARY { $$=$2 }
1.206 paf 569: | '~' expr { $$=$2; O(*$$, OP_INV) }
570: | '!' expr { $$=$2; O(*$$, OP_NOT) }
571: | "def" expr { $$=$2; O(*$$, OP_DEF) }
572: | "in" expr { $$=$2; O(*$$, OP_IN) }
573: | "-f" expr { $$=$2; O(*$$, OP_FEXISTS) }
574: | "-d" expr { $$=$2; O(*$$, OP_DEXISTS) }
1.60 paf 575: /* stack: a,b // stack: a@b */
1.206 paf 576: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP_SUB) }
577: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP_ADD) }
578: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MUL) }
579: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP_DIV) }
580: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MOD) }
581: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP_INTDIV) }
582: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SL) }
583: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SR) }
584: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_AND) }
585: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_OR) }
586: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_XOR) }
587: | expr "&&" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_AND) }
588: | expr "||" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_OR) }
589: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP_LOG_XOR) }
590: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LT) }
591: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GT) }
592: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LE) }
593: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GE) }
594: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_EQ) }
595: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_NE) }
596: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LT) }
597: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GT) }
598: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LE) }
599: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GE) }
600: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_EQ) }
601: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_NE) }
602: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP_IS) }
1.56 paf 603: ;
1.214 ! paf 604:
! 605: double_or_STRING: STRING {
! 606: // optimized from OP_STRING->OP_VALUE for doubles
! 607: maybe_change_string_literal_to_double_literal(*($$=$1));
! 608: };
1.55 paf 609:
1.65 paf 610: string_inside_quotes_value: maybe_codes {
1.206 paf 611: $$=N();
612: OA(*$$, OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 613: /* some code that writes to that context */
614: /* context=pop; stack: context.get_string() */
1.53 paf 615: };
1.1 paf 616:
1.27 paf 617: /* basics */
1.1 paf 618:
1.81 paf 619: write_string: STRING {
1.209 paf 620: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
621: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 622: };
623:
1.206 paf 624: void_value: /* empty */ { $$=VL(new VVoid(), 0, 0, 0) };
625: empty: /* empty */ { $$=N() };
1.1 paf 626:
627: %%
1.105 paf 628: #endif
1.1 paf 629:
630: /*
631: 000$111(2222)00
632: 000$111{3333}00
1.9 paf 633: $,^: push,=0
1.1 paf 634: 1:( { break=pop
635: 2:( ) pop
636: 3:{ } pop
637:
638: 000^111(2222)4444{33333}4000
1.9 paf 639: $,^: push,=0
1.1 paf 640: 1:( { break=pop
641: 2:( )=4
642: 3:{ }=4
643: 4:[^({]=pop
644: */
645:
1.206 paf 646: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
647: pc.source--;
648: if(pc.pos.col==0) {
649: --pc.pos.line; pc.pos.col=last_line_end_col;
650: } else
651: --pc.pos.col;
652:
653: }
654: static int yylex(YYSTYPE *lvalp, void *apc) {
655: register Parse_control& pc=*static_cast<Parse_control*>(apc);
656:
657: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 658: #define RC {result=c; goto break2; }
1.1 paf 659:
1.206 paf 660: register int c;
661: int result;
1.1 paf 662:
1.206 paf 663: if(pc.pending_state) {
664: result=pc.pending_state;
665: pc.pending_state=0;
1.1 paf 666: return result;
667: }
668:
1.206 paf 669: const char *begin=pc.source;
670: Pos begin_pos=pc.pos;
1.91 paf 671: const char *end;
1.67 paf 672: int skip_analized=0;
1.50 paf 673: while(true) {
1.206 paf 674: c=*(end=(pc.source++));
675: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 676:
1.208 paf 677: if(c=='\n')
1.206 paf 678: pc.pos_next_line();
1.208 paf 679: else
1.206 paf 680: pc.pos_next_c(c);
1.208 paf 681: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 682:
1.208 paf 683: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 684: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 685: // @SPECIAL
686: // ...
687: // @<here =
1.206 paf 688: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 689: } // continuing checks
1.206 paf 690: if(pc.ls==LS_USER) {
691: push_LS(pc, LS_DEF_NAME);
1.171 parser 692: RC;
1.175 paf 693: } else // @ in first column inside some code [when could that be?]
1.171 parser 694: result=BAD_METHOD_DECL_START;
695: goto break2;
1.209 paf 696: }
697: if(c=='^') {
1.206 paf 698: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 699: // handle after-method situation
1.206 paf 700: pop_LS(pc);
1.203 paf 701: result=EON;
702: skip_analized=-1; // return to punctuation afterwards to assure it's literality
703: goto break2;
704: }
1.206 paf 705: switch(pc.ls) {
1.169 parser 706: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
707: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
708: case LS_VAR_NAME_SIMPLE_WITH_COLON:
709: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
710: case LS_VAR_NAME_CURLY:
711: case LS_METHOD_NAME:
1.194 paf 712: case LS_USER_COMMENT:
1.169 parser 713: case LS_DEF_COMMENT:
714: // no literals in names, please
715: break;
716: default:
1.206 paf 717: switch(*pc.source) {
1.165 parser 718: // ^escaping some punctuators
1.48 paf 719: case '^': case '$': case ';':
1.126 paf 720: case '(': case ')':
1.48 paf 721: case '[': case ']':
722: case '{': case '}':
1.172 parser 723: case '"': case ':':
1.40 paf 724: if(end!=begin) {
1.206 paf 725: if(!pc.string_start)
726: pc.string_start=begin_pos;
1.40 paf 727: // append piece till ^
1.206 paf 728: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 729: }
1.63 paf 730: // reset piece 'begin' position & line
1.206 paf 731: begin=pc.source; // ->punctuation
732: begin_pos=pc.pos;
1.203 paf 733: // skip over _ after ^
1.206 paf 734: pc.source++; pc.pos.col++;
1.203 paf 735: // skip analysis = forced literal
736: continue;
1.114 paf 737:
738: // converting ^#HH into char(hex(HH))
739: case '#':
740: if(end!=begin) {
1.206 paf 741: if(!pc.string_start)
742: pc.string_start=begin_pos;
1.114 paf 743: // append piece till ^
1.206 paf 744: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 745: }
746: // #HH ?
1.206 paf 747: if(pc.source[0]=='#' && pc.source[1] && pc.source[2]) {
748: char c=
749: hex_value[(unsigned char)pc.source[1]]*0x10+
750: hex_value[(unsigned char)pc.source[2]];
751: if(c==0) {
1.114 paf 752: result=BAD_HEX_LITERAL;
753: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
754: }
755: // append char(hex(HH))
1.206 paf 756: pc.string.append(c);
1.114 paf 757: // skip over ^#HH
1.206 paf 758: pc.source+=3;
759: pc.pos.col+=3;
1.114 paf 760: // reset piece 'begin' position & line
1.206 paf 761: begin=pc.source; // ->after ^#HH
762: begin_pos=pc.pos;
1.203 paf 763: // skip analysis = forced literal
1.114 paf 764: continue;
765: }
766: break;
1.1 paf 767: }
1.169 parser 768: break;
1.203 paf 769: }
1.169 parser 770: }
1.113 paf 771: // #comment start skipping
1.206 paf 772: if(c=='#' && pc.pos.col==1) {
1.112 paf 773: if(end!=begin) {
1.206 paf 774: if(!pc.string_start)
775: pc.string_start=begin_pos;
1.112 paf 776: // append piece till #
1.206 paf 777: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 778: }
779: // fall into COMMENT lexical state [wait for \n]
1.206 paf 780: push_LS(pc, LS_USER_COMMENT);
1.175 paf 781: continue;
1.112 paf 782: }
1.206 paf 783: switch(pc.ls) {
1.10 paf 784:
785: // USER'S = NOT OURS
1.1 paf 786: case LS_USER:
1.206 paf 787: case LS_NAME_SQUARE_PART: // name.[here].xxx
788: if(pc.trim_bof)
1.153 parser 789: switch(c) {
790: case '\n': case ' ': case '\t':
1.206 paf 791: begin=pc.source;
792: begin_pos=pc.pos;
1.152 parser 793: continue; // skip it
1.153 parser 794: default:
1.206 paf 795: pc.trim_bof=false;
1.152 parser 796: }
1.48 paf 797: switch(c) {
798: case '$':
1.206 paf 799: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 800: RC;
801: case '^':
1.206 paf 802: push_LS(pc, LS_METHOD_NAME);
1.48 paf 803: RC;
1.166 parser 804: case ']':
1.206 paf 805: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 806: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 807: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 808: RC;
809: }
1.160 parser 810: break;
1.166 parser 811: case '[': // $name.[co<[>de]
1.206 paf 812: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 813: lexical_brackets_nestage++;
1.161 parser 814: break;
1.112 paf 815: }
1.209 paf 816: if(pc.explicit_result && c)
817: switch(c) {
818: case '\n': case ' ': case '\t':
819: begin=pc.source;
820: begin_pos=pc.pos;
821: continue; // skip it
822: default:
823: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
824: goto break2;
825: }
1.112 paf 826: break;
827:
828: // #COMMENT
1.194 paf 829: case LS_USER_COMMENT:
1.112 paf 830: if(c=='\n') {
831: // skip comment
1.206 paf 832: begin=pc.source;
833: begin_pos=pc.pos;
1.112 paf 834:
1.206 paf 835: pop_LS(pc);
1.112 paf 836: continue;
1.1 paf 837: }
1.48 paf 838: break;
839:
840: // STRING IN EXPRESSION
1.145 parser 841: case LS_EXPRESSION_STRING_QUOTED:
842: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 843: switch(c) {
844: case '"':
1.145 parser 845: case '\'':
846: if(
1.206 paf 847: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
848: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
849: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 850: RC;
851: }
852: break;
1.48 paf 853: case '$':
1.206 paf 854: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 855: RC;
856: case '^':
1.206 paf 857: push_LS(pc, LS_METHOD_NAME);
1.48 paf 858: RC;
1.10 paf 859: }
860: break;
861:
862: // METHOD DEFINITION
863: case LS_DEF_NAME:
1.48 paf 864: switch(c) {
865: case '[':
1.206 paf 866: pc.ls=LS_DEF_PARAMS;
1.48 paf 867: RC;
868: case '\n':
1.206 paf 869: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 870: RC;
1.10 paf 871: }
872: break;
1.48 paf 873:
1.10 paf 874: case LS_DEF_PARAMS:
1.48 paf 875: switch(c) {
1.192 paf 876: case '$': // common error
1.193 paf 877: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
878: goto break2;
1.48 paf 879: case ';':
880: RC;
881: case ']':
1.206 paf 882: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 883: RC;
1.49 paf 884: case '\n': // wrong. bailing out
1.206 paf 885: pop_LS(pc);
1.48 paf 886: RC;
1.10 paf 887: }
888: break;
1.48 paf 889:
1.10 paf 890: case LS_DEF_LOCALS:
1.48 paf 891: switch(c) {
892: case '[':
893: case ';':
894: RC;
895: case ']':
1.206 paf 896: pc.ls=LS_DEF_COMMENT;
1.48 paf 897: RC;
898: case '\n': // wrong. bailing out
1.206 paf 899: pop_LS(pc);
1.48 paf 900: RC;
1.10 paf 901: }
902: break;
1.48 paf 903:
1.10 paf 904: case LS_DEF_COMMENT:
905: if(c=='\n') {
1.206 paf 906: pop_LS(pc);
1.48 paf 907: RC;
1.37 paf 908: }
909: break;
910:
1.48 paf 911: case LS_DEF_SPECIAL_BODY:
1.175 paf 912: if(c=='\n')
1.48 paf 913: RC;
914: break;
915:
916: // (EXPRESSION)
1.69 paf 917: case LS_VAR_ROUND:
918: case LS_METHOD_ROUND:
1.48 paf 919: switch(c) {
920: case ')':
921: if(--lexical_brackets_nestage==0)
1.206 paf 922: if(pc.ls==LS_METHOD_ROUND) // method round param ended
923: pc.ls=LS_METHOD_AFTER; // look for method end
924: else // pc.ls==LS_VAR_ROUND // variable constructor ended
925: pop_LS(pc); // return to normal life
1.48 paf 926: RC;
1.194 paf 927: case '#': // comment start skipping
928: if(end!=begin) {
1.206 paf 929: if(!pc.string_start)
930: pc.string_start=begin_pos;
1.194 paf 931: // append piece till #
1.206 paf 932: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 933: }
934: // fall into COMMENT lexical state [wait for \n]
1.206 paf 935: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 936: lexical_brackets_nestage=1;
937: continue;
1.48 paf 938: case '$':
1.206 paf 939: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 940: RC;
941: case '^':
1.206 paf 942: push_LS(pc, LS_METHOD_NAME);
1.48 paf 943: RC;
944: case '(':
945: lexical_brackets_nestage++;
946: RC;
1.67 paf 947: case '-':
1.206 paf 948: switch(*pc.source) {
1.127 paf 949: case 'f': // -f
1.67 paf 950: skip_analized=1;
951: result=FEXISTS;
1.127 paf 952: goto break2;
953: case 'd': // -d
954: skip_analized=1;
955: result=DEXISTS;
956: goto break2;
1.191 paf 957: default: // minus
1.67 paf 958: result=c;
1.127 paf 959: goto break2;
960: }
1.67 paf 961: goto break2;
1.173 paf 962: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 963: case '~':
1.48 paf 964: case ';':
965: RC;
1.193 paf 966: case '&': case '|':
1.206 paf 967: if(*pc.source==c) { // && ||
1.193 paf 968: result=c=='&'?LAND:LOR;
1.67 paf 969: skip_analized=1;
1.58 paf 970: } else
971: result=c;
972: goto break2;
1.193 paf 973: case '!':
1.206 paf 974: switch(pc.source[0]) {
1.193 paf 975: case '|': // !| !||
976: skip_analized=1;
1.206 paf 977: if(pc.source[1]=='|') {
1.193 paf 978: skip_analized++;
979: result=LXOR;
980: } else
981: result=NXOR;
982: goto break2;
983: case '=': // !=
984: skip_analized=1;
985: result=NNE;
986: goto break2;
987: }
988: RC;
1.195 paf 989:
990: case '<': // <<, <=, <
1.206 paf 991: switch(*pc.source) {
1.195 paf 992: case '<': // <[<]
993: skip_analized=1; result=NSL; break;
994: case '=': // <[=]
995: skip_analized=1; result=NLE; break;
996: default: // <[]
997: result=c; break;
998: }
999: goto break2;
1000: case '>': // >>, >=, >
1.206 paf 1001: switch(*pc.source) {
1.195 paf 1002: case '>': // >[>]
1003: skip_analized=1; result=NSR; break;
1004: case '=': // >[=]
1005: skip_analized=1; result=NGE; break;
1006: default: // >[]
1007: result=c; break;
1008: }
1009: goto break2;
1010: case '=': // ==
1.206 paf 1011: switch(*pc.source) {
1.195 paf 1012: case '=': // =[=]
1013: skip_analized=1; result=NEQ; break;
1014: default: // =[]
1015: result=c; break; // not used now
1016: }
1.58 paf 1017: goto break2;
1.195 paf 1018:
1.48 paf 1019: case '"':
1.206 paf 1020: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1021: RC;
1022: case '\'':
1.206 paf 1023: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1024: RC;
1.50 paf 1025: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1026: if(end==begin) // right after whitespace
1.206 paf 1027: if(isspace(pc.source[1])) {
1028: switch(*pc.source) {
1.117 paf 1029: // case '?': // ok [and bad cases, yacc would bark at them]
1030: case 't': // lt gt [et nt]
1031: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1032: skip_analized=1;
1033: goto break2;
1034: case 'e': // le ge ne [ee]
1035: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1036: skip_analized=1;
1037: goto break2;
1038: case 'q': // eq [lq gq nq]
1039: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1040: skip_analized=1;
1041: goto break2;
1042: }
1.67 paf 1043: }
1044: break;
1045: case 'i':
1046: if(end==begin) // right after whitespace
1.206 paf 1047: if(isspace(pc.source[1])) {
1048: switch(pc.source[0]) {
1.117 paf 1049: case 'n': // in
1.95 paf 1050: skip_analized=1;
1051: result=IN;
1052: goto break2;
1.117 paf 1053: case 's': // is
1.95 paf 1054: skip_analized=1;
1055: result=IS;
1056: goto break2;
1057: }
1.67 paf 1058: }
1059: break;
1060: case 'd':
1061: if(end==begin) // right after whitespace
1.206 paf 1062: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.67 paf 1063: skip_analized=2;
1064: result=DEF;
1.58 paf 1065: goto break2;
1.50 paf 1066: }
1.48 paf 1067: break;
1068: case ' ': case '\t': case '\n':
1.63 paf 1069: if(end!=begin) { // there were a string after previous operator?
1070: result=0; // return that string
1071: goto break2;
1.48 paf 1072: }
1.63 paf 1073: // that's a leading|traling space or after-operator-space
1074: // ignoring it
1075: // reset piece 'begin' position & line
1.206 paf 1076: begin=pc.source; // after whitespace char
1077: begin_pos=pc.pos;
1.48 paf 1078: continue;
1.1 paf 1079: }
1080: break;
1.194 paf 1081: case LS_EXPRESSION_COMMENT:
1082: if(c=='(')
1083: lexical_brackets_nestage++;
1084:
1.206 paf 1085: switch(*pc.source) {
1.194 paf 1086: case '\n': case ')':
1.206 paf 1087: if(*pc.source==')')
1.194 paf 1088: if(--lexical_brackets_nestage!=0)
1089: continue;
1090:
1091: // skip comment
1.206 paf 1092: begin=pc.source;
1093: begin_pos=pc.pos;
1.194 paf 1094:
1.206 paf 1095: pop_LS(pc);
1.194 paf 1096: continue;
1097: }
1098: break;
1.1 paf 1099:
1.10 paf 1100: // VARIABLE GET/PUT/WITH
1.166 parser 1101: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1102: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1103: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1104: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1105: if(
1.206 paf 1106: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1107: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1108: // name in expr ends also before
1.48 paf 1109: switch(c) {
1.181 paf 1110: // expression minus
1.92 paf 1111: case '-':
1.181 paf 1112: // expression integer division
1113: case '\\':
1.206 paf 1114: pop_LS(pc);
1115: pc.ungetc();
1.48 paf 1116: result=EON;
1117: goto break2;
1118: }
1119: }
1.166 parser 1120: if(
1.206 paf 1121: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1122: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1123: // name already has ':', stop before next
1124: switch(c) {
1125: case ':':
1.206 paf 1126: pop_LS(pc);
1127: pc.ungetc();
1.142 parser 1128: result=EON;
1129: goto break2;
1130: }
1131: }
1.48 paf 1132: switch(c) {
1133: case 0:
1134: case ' ': case '\t': case '\n':
1135: case ';':
1.126 paf 1136: case ']': case '}': case ')':
1137: case '"': case '\'':
1.139 parser 1138: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1139: case '+': case '*': case '/': case '%':
1140: case '&': case '|':
1141: case '=': case '!':
1.99 paf 1142: // common delimiters
1.190 paf 1143: case ',': case '?': case '#':
1.139 parser 1144: // before call
1145: case '^':
1.206 paf 1146: pop_LS(pc);
1147: pc.ungetc();
1.13 paf 1148: result=EON;
1.1 paf 1149: goto break2;
1.48 paf 1150: case '[':
1.162 parser 1151: // $name.<[>code]
1.206 paf 1152: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1153: end[-1]=='$'/*was start of get*/ ||
1154: end[-1]==':'/*was class name delim */ ||
1155: end[-1]=='.'/*was name delim */
1.162 parser 1156: )) {
1.206 paf 1157: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1158: lexical_brackets_nestage=1;
1159: RC;
1160: }
1.206 paf 1161: pc.ls=LS_VAR_SQUARE;
1.1 paf 1162: lexical_brackets_nestage=1;
1.48 paf 1163: RC;
1164: case '{':
1165: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1166: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1167: } else {
1.206 paf 1168: pc.ls=LS_VAR_CURLY;
1.48 paf 1169: lexical_brackets_nestage=1;
1170: }
1.69 paf 1171:
1.48 paf 1172: RC;
1173: case '(':
1.206 paf 1174: pc.ls=LS_VAR_ROUND;
1.1 paf 1175: lexical_brackets_nestage=1;
1.48 paf 1176: RC;
1177: case '.': // name part delim
1178: case '$': // name part subvar
1.160 parser 1179: case ':': // class<:>name
1.166 parser 1180: // go to _WITHOUT_COLON state variant...
1.206 paf 1181: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1182: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1183: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1184: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1185: // ...stop before next ':'
1.48 paf 1186: RC;
1.1 paf 1187: }
1188: break;
1.48 paf 1189:
1.1 paf 1190: case LS_VAR_NAME_CURLY:
1.48 paf 1191: switch(c) {
1.162 parser 1192: case '[':
1.166 parser 1193: // ${name.<[>code]}
1.206 paf 1194: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1195: lexical_brackets_nestage=1;
1196: RC;
1.48 paf 1197: case '}': // ${name} finished, restoring LS
1.206 paf 1198: pop_LS(pc);
1.48 paf 1199: RC;
1200: case '.': // name part delim
1201: case '$': // name part subvar
1202: case ':': // ':name' or 'class:name'
1203: RC;
1.1 paf 1204: }
1205: break;
1.48 paf 1206:
1207: case LS_VAR_SQUARE:
1208: switch(c) {
1209: case '$':
1.206 paf 1210: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1211: RC;
1212: case '^':
1.206 paf 1213: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1214: RC;
1215: case ']':
1.1 paf 1216: if(--lexical_brackets_nestage==0) {
1.206 paf 1217: pop_LS(pc);
1.48 paf 1218: RC;
1.1 paf 1219: }
1.48 paf 1220: break;
1221: case ';': // operator_or_fmt;value delim
1222: RC;
1223: case '[':
1224: lexical_brackets_nestage++;
1225: break;
1.1 paf 1226: }
1227: break;
1.48 paf 1228:
1.1 paf 1229: case LS_VAR_CURLY:
1.48 paf 1230: switch(c) {
1231: case '$':
1.206 paf 1232: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1233: RC;
1234: case '^':
1.206 paf 1235: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1236: RC;
1237: case '}':
1.1 paf 1238: if(--lexical_brackets_nestage==0) {
1.206 paf 1239: pop_LS(pc);
1.48 paf 1240: RC;
1.1 paf 1241: }
1.48 paf 1242: break;
1243: case '{':
1.1 paf 1244: lexical_brackets_nestage++;
1.48 paf 1245: break;
1246: }
1.1 paf 1247: break;
1248:
1.10 paf 1249: // METHOD CALL
1.1 paf 1250: case LS_METHOD_NAME:
1.48 paf 1251: switch(c) {
1252: case '[':
1.166 parser 1253: // ^name.<[>code].xxx
1.206 paf 1254: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1255: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1256: end[-1]==':'/*was class name delim */ ||
1257: end[-1]=='.'/*was name delim */
1.162 parser 1258: )) {
1.206 paf 1259: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1260: lexical_brackets_nestage=1;
1261: RC;
1262: }
1.206 paf 1263: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1264: lexical_brackets_nestage=1;
1.48 paf 1265: RC;
1266: case '{':
1.206 paf 1267: pc.ls=LS_METHOD_CURLY;
1.1 paf 1268: lexical_brackets_nestage=1;
1.48 paf 1269: RC;
1.69 paf 1270: case '(':
1.206 paf 1271: pc.ls=LS_METHOD_ROUND;
1.69 paf 1272: lexical_brackets_nestage=1;
1273: RC;
1.48 paf 1274: case '.': // name part delim
1275: case '$': // name part subvar
1276: case ':': // ':name' or 'class:name'
1.170 parser 1277: case '^': // ^abc^xxx wrong. bailing out
1278: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1279: case ' ': // ^if ( wrong. bailing out
1.48 paf 1280: RC;
1.1 paf 1281: }
1282: break;
1.48 paf 1283:
1284: case LS_METHOD_SQUARE:
1285: switch(c) {
1286: case '$':
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 ';': // param delim
1293: RC;
1294: case ']':
1.1 paf 1295: if(--lexical_brackets_nestage==0) {
1.206 paf 1296: pc.ls=LS_METHOD_AFTER;
1.48 paf 1297: RC;
1.1 paf 1298: }
1.48 paf 1299: break;
1300: case '[':
1.1 paf 1301: lexical_brackets_nestage++;
1.48 paf 1302: break;
1303: }
1.1 paf 1304: break;
1.48 paf 1305:
1.1 paf 1306: case LS_METHOD_CURLY:
1.48 paf 1307: switch(c) {
1308: case '$':
1.206 paf 1309: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1310: RC;
1311: case '^':
1.206 paf 1312: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1313: RC;
1314: case ';': // param delim
1.48 paf 1315: RC;
1316: case '}':
1.1 paf 1317: if(--lexical_brackets_nestage==0) {
1.206 paf 1318: pc.ls=LS_METHOD_AFTER;
1.48 paf 1319: RC;
1.1 paf 1320: }
1.48 paf 1321: break;
1322: case '{':
1.1 paf 1323: lexical_brackets_nestage++;
1.48 paf 1324: break;
1325: }
1.209 paf 1326: if(pc.explicit_result && c)
1327: switch(c) {
1328: case '\n': case ' ': case '\t':
1329: begin=pc.source;
1330: begin_pos=pc.pos;
1331: continue; // skip it
1332: default:
1333: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
1334: goto break2;
1335: }
1.1 paf 1336: break;
1.48 paf 1337:
1.1 paf 1338: case LS_METHOD_AFTER:
1.69 paf 1339: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1340: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1341: lexical_brackets_nestage=1;
1.48 paf 1342: RC;
1.1 paf 1343: }
1.69 paf 1344: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1345: pc.ls=LS_METHOD_CURLY;
1.69 paf 1346: lexical_brackets_nestage=1;
1347: RC;
1348: }
1349: if(c=='(') {/* ]( }( )( */
1.206 paf 1350: pc.ls=LS_METHOD_ROUND;
1.1 paf 1351: lexical_brackets_nestage=1;
1.48 paf 1352: RC;
1.1 paf 1353: }
1.206 paf 1354: pop_LS(pc);
1355: pc.ungetc();
1.13 paf 1356: result=EON;
1.1 paf 1357: goto break2;
1358: }
1.9 paf 1359: if(c==0) {
1.1 paf 1360: result=-1;
1361: break;
1362: }
1363: }
1364:
1365: break2:
1.59 paf 1366: if(end!=begin) { // there is last piece?
1367: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1368: // strip last \n
1.10 paf 1369: end--;
1.137 parser 1370: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1371: end--;
1.59 paf 1372: }
1.206 paf 1373: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1374: if(!pc.string_start)
1375: pc.string_start=begin_pos;
1.59 paf 1376: // append it
1.206 paf 1377: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1378: }
1.59 paf 1379: }
1.206 paf 1380: if(!pc.string.is_empty()) { // something accumulated?
1381: // create STRING value: array of OP_VALUE+origin+vstring
1382: *lvalp=VL(
1383: new VString(*new String(pc.string, String::L_CLEAN)),
1384: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1385: // new pieces storage
1.206 paf 1386: pc.string.clear();
1387: pc.string_start.clear();
1.58 paf 1388: // make current result be pending for next call, return STRING for now
1.206 paf 1389: pc.pending_state=result; result=STRING;
1.58 paf 1390: }
1.67 paf 1391: if(skip_analized) {
1.206 paf 1392: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1393: }
1.58 paf 1394: return result;
1.1 paf 1395: }
1396:
1.206 paf 1397: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1398: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1399: return 1;
1.110 paf 1400: }
1.1 paf 1401:
1.110 paf 1402: static void yyprint(FILE *file, int type, YYSTYPE value) {
1403: if(type==STRING)
1.206 paf 1404: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1405: }
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