Annotation of parser3/src/main/compile.y, revision 1.213
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:
1.212 paf 8: $Id: compile.y,v 1.211 2004/04/06 14:12:45 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(*$$, OP_STORE_PARAM);
1.120 paf 443: };
1.69 paf 444: store_expr_param_part: write_expr_value {
1.206 paf 445: $$=N();
446: OA(*$$, OP_EXPR_CODE__STORE_PARAM, $1);
1.69 paf 447: };
1.94 paf 448: store_curly_param_part: maybe_codes {
1.206 paf 449: $$=N();
450: OA(*$$, OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 451: };
1.120 paf 452: code_param_value:
1.157 parser 453: void_value /* optimized [;...] case */
1.120 paf 454: | STRING /* optimized [STRING] case */
455: | constructor_code_value /* [something complex] */
456: ;
1.90 paf 457: write_expr_value: expr_value {
1.206 paf 458: $$=N();
459: O(*$$, OP_PREPARE_TO_EXPRESSION);
460: P(*$$, *$1);
461: O(*$$, OP_WRITE_EXPR_RESULT);
1.69 paf 462: };
1.1 paf 463:
464: /* name */
465:
1.206 paf 466: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 467:
1.206 paf 468: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 469: name_step: name_advance1 '.';
470: name_advance1: name_expr_value {
1.177 paf 471: // we know that name_advance1 not called from ^xxx context
472: // so we'll not check for operator call possibility as we do in name_advance2
473:
1.1 paf 474: /* stack: context */
475: $$=$1; /* stack: context,name */
1.206 paf 476: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 477: };
478: name_advance2: name_expr_value {
479: /* stack: context */
480: $$=$1; /* stack: context,name */
1.206 paf 481: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 482: }
1.4 paf 483: | STRING BOGUS
1.1 paf 484: ;
485: name_expr_value:
1.4 paf 486: STRING /* subname_is_const */
1.1 paf 487: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 488: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 489: | name_square_code_value /* [codes] */
1.1 paf 490: ;
491: name_expr_subvar_value: '$' subvar_ref_name_rdive {
492: $$=$2;
1.206 paf 493: O(*$$, OP_GET_ELEMENT);
1.1 paf 494: };
1.4 paf 495: name_expr_with_subvar_value: STRING subvar_get_writes {
1.206 paf 496: ArrayOperation* code;
1.183 paf 497: {
1.206 paf 498: change_string_literal_to_write_string_literal(*(code=$1));
499: P(*code, *$2);
1.183 paf 500: }
1.206 paf 501: $$=N();
502: OA(*$$, OP_STRING_POOL, code);
1.1 paf 503: };
1.212 paf 504: name_square_code_value: '[' {
505: // allow $result_or_other_variable[ letters here any time ]
506: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
507: } codes {
1.213 ! paf 508: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.212 paf 509: } ']' {
1.206 paf 510: $$=N();
1.212 paf 511: OA(*$$, OP_OBJECT_POOL, $3); /* stack: empty write context */
1.183 paf 512: /* some code that writes to that context */
513: /* context=pop; stack: context.value() */
1.160 parser 514: };
1.154 parser 515: subvar_ref_name_rdive: STRING {
1.206 paf 516: $$=N();
517: O(*$$, OP_WITH_READ);
518: P(*$$, *$1);
1.1 paf 519: };
1.206 paf 520: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 521: subvar__get_write: '$' subvar_ref_name_rdive {
522: $$=$2;
1.206 paf 523: O(*$$, OP_GET_ELEMENT__WRITE);
1.42 paf 524: };
525:
1.154 parser 526: class_prefix:
527: class_static_prefix
528: | class_constructor_prefix
529: ;
1.155 parser 530: class_static_prefix: STRING ':' {
531: $$=$1; // stack: class name string
1.206 paf 532: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
533: if(VStateless_class* base=PC.cclass->base_class()) {
534: change_string_literal_value(*$$, base->name());
1.189 paf 535: } else {
536: strcpy(PC.error, "no base class declared");
537: YYERROR;
538: }
539: }
1.206 paf 540: O(*$$, OP_GET_CLASS);
1.155 parser 541: };
542: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 543: $$=$1;
1.180 paf 544: if(!PC.in_call_value) {
1.154 parser 545: strcpy(PC.error, ":: not allowed here");
546: YYERROR;
547: }
1.206 paf 548: O(*$$, OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 549: };
550:
1.53 paf 551:
1.56 paf 552: /* expr */
1.53 paf 553:
1.81 paf 554: expr_value: expr {
1.182 paf 555: // see OP_PREPARE_TO_EXPRESSION!!
1.206 paf 556: if(($$=$1)->count()==2) // only one string literal in there?
557: change_string_literal_to_double_literal(*$$); // make that string literal Double
1.62 paf 558: };
1.56 paf 559: expr:
1.62 paf 560: STRING
1.64 paf 561: | get_value
1.66 paf 562: | call_value
1.64 paf 563: | '"' string_inside_quotes_value '"' { $$ = $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: ;
1.55 paf 604:
1.65 paf 605: string_inside_quotes_value: maybe_codes {
1.206 paf 606: $$=N();
607: OA(*$$, OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 608: /* some code that writes to that context */
609: /* context=pop; stack: context.get_string() */
1.53 paf 610: };
1.1 paf 611:
1.27 paf 612: /* basics */
1.1 paf 613:
1.81 paf 614: write_string: STRING {
1.209 paf 615: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
616: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 617: };
618:
1.206 paf 619: void_value: /* empty */ { $$=VL(new VVoid(), 0, 0, 0) };
620: empty: /* empty */ { $$=N() };
1.1 paf 621:
622: %%
1.105 paf 623: #endif
1.1 paf 624:
625: /*
626: 000$111(2222)00
627: 000$111{3333}00
1.9 paf 628: $,^: push,=0
1.1 paf 629: 1:( { break=pop
630: 2:( ) pop
631: 3:{ } pop
632:
633: 000^111(2222)4444{33333}4000
1.9 paf 634: $,^: push,=0
1.1 paf 635: 1:( { break=pop
636: 2:( )=4
637: 3:{ }=4
638: 4:[^({]=pop
639: */
640:
1.206 paf 641: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
642: pc.source--;
643: if(pc.pos.col==0) {
644: --pc.pos.line; pc.pos.col=last_line_end_col;
645: } else
646: --pc.pos.col;
647:
648: }
649: static int yylex(YYSTYPE *lvalp, void *apc) {
650: register Parse_control& pc=*static_cast<Parse_control*>(apc);
651:
652: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 653: #define RC {result=c; goto break2; }
1.1 paf 654:
1.206 paf 655: register int c;
656: int result;
1.1 paf 657:
1.206 paf 658: if(pc.pending_state) {
659: result=pc.pending_state;
660: pc.pending_state=0;
1.1 paf 661: return result;
662: }
663:
1.206 paf 664: const char *begin=pc.source;
665: Pos begin_pos=pc.pos;
1.91 paf 666: const char *end;
1.67 paf 667: int skip_analized=0;
1.50 paf 668: while(true) {
1.206 paf 669: c=*(end=(pc.source++));
670: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 671:
1.208 paf 672: if(c=='\n')
1.206 paf 673: pc.pos_next_line();
1.208 paf 674: else
1.206 paf 675: pc.pos_next_c(c);
1.208 paf 676: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 677:
1.208 paf 678: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 679: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 680: // @SPECIAL
681: // ...
682: // @<here =
1.206 paf 683: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 684: } // continuing checks
1.206 paf 685: if(pc.ls==LS_USER) {
686: push_LS(pc, LS_DEF_NAME);
1.171 parser 687: RC;
1.175 paf 688: } else // @ in first column inside some code [when could that be?]
1.171 parser 689: result=BAD_METHOD_DECL_START;
690: goto break2;
1.209 paf 691: }
692: if(c=='^') {
1.206 paf 693: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 694: // handle after-method situation
1.206 paf 695: pop_LS(pc);
1.203 paf 696: result=EON;
697: skip_analized=-1; // return to punctuation afterwards to assure it's literality
698: goto break2;
699: }
1.206 paf 700: switch(pc.ls) {
1.169 parser 701: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
702: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
703: case LS_VAR_NAME_SIMPLE_WITH_COLON:
704: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
705: case LS_VAR_NAME_CURLY:
706: case LS_METHOD_NAME:
1.194 paf 707: case LS_USER_COMMENT:
1.169 parser 708: case LS_DEF_COMMENT:
709: // no literals in names, please
710: break;
711: default:
1.206 paf 712: switch(*pc.source) {
1.165 parser 713: // ^escaping some punctuators
1.48 paf 714: case '^': case '$': case ';':
1.126 paf 715: case '(': case ')':
1.48 paf 716: case '[': case ']':
717: case '{': case '}':
1.172 parser 718: case '"': case ':':
1.40 paf 719: if(end!=begin) {
1.206 paf 720: if(!pc.string_start)
721: pc.string_start=begin_pos;
1.40 paf 722: // append piece till ^
1.206 paf 723: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 724: }
1.63 paf 725: // reset piece 'begin' position & line
1.206 paf 726: begin=pc.source; // ->punctuation
727: begin_pos=pc.pos;
1.203 paf 728: // skip over _ after ^
1.206 paf 729: pc.source++; pc.pos.col++;
1.203 paf 730: // skip analysis = forced literal
731: continue;
1.114 paf 732:
733: // converting ^#HH into char(hex(HH))
734: case '#':
735: if(end!=begin) {
1.206 paf 736: if(!pc.string_start)
737: pc.string_start=begin_pos;
1.114 paf 738: // append piece till ^
1.206 paf 739: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 740: }
741: // #HH ?
1.206 paf 742: if(pc.source[0]=='#' && pc.source[1] && pc.source[2]) {
743: char c=
744: hex_value[(unsigned char)pc.source[1]]*0x10+
745: hex_value[(unsigned char)pc.source[2]];
746: if(c==0) {
1.114 paf 747: result=BAD_HEX_LITERAL;
748: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
749: }
750: // append char(hex(HH))
1.206 paf 751: pc.string.append(c);
1.114 paf 752: // skip over ^#HH
1.206 paf 753: pc.source+=3;
754: pc.pos.col+=3;
1.114 paf 755: // reset piece 'begin' position & line
1.206 paf 756: begin=pc.source; // ->after ^#HH
757: begin_pos=pc.pos;
1.203 paf 758: // skip analysis = forced literal
1.114 paf 759: continue;
760: }
761: break;
1.1 paf 762: }
1.169 parser 763: break;
1.203 paf 764: }
1.169 parser 765: }
1.113 paf 766: // #comment start skipping
1.206 paf 767: if(c=='#' && pc.pos.col==1) {
1.112 paf 768: if(end!=begin) {
1.206 paf 769: if(!pc.string_start)
770: pc.string_start=begin_pos;
1.112 paf 771: // append piece till #
1.206 paf 772: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 773: }
774: // fall into COMMENT lexical state [wait for \n]
1.206 paf 775: push_LS(pc, LS_USER_COMMENT);
1.175 paf 776: continue;
1.112 paf 777: }
1.206 paf 778: switch(pc.ls) {
1.10 paf 779:
780: // USER'S = NOT OURS
1.1 paf 781: case LS_USER:
1.206 paf 782: case LS_NAME_SQUARE_PART: // name.[here].xxx
783: if(pc.trim_bof)
1.153 parser 784: switch(c) {
785: case '\n': case ' ': case '\t':
1.206 paf 786: begin=pc.source;
787: begin_pos=pc.pos;
1.152 parser 788: continue; // skip it
1.153 parser 789: default:
1.206 paf 790: pc.trim_bof=false;
1.152 parser 791: }
1.48 paf 792: switch(c) {
793: case '$':
1.206 paf 794: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 795: RC;
796: case '^':
1.206 paf 797: push_LS(pc, LS_METHOD_NAME);
1.48 paf 798: RC;
1.166 parser 799: case ']':
1.206 paf 800: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 801: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 802: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 803: RC;
804: }
1.160 parser 805: break;
1.166 parser 806: case '[': // $name.[co<[>de]
1.206 paf 807: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 808: lexical_brackets_nestage++;
1.161 parser 809: break;
1.112 paf 810: }
1.209 paf 811: if(pc.explicit_result && c)
812: switch(c) {
813: case '\n': case ' ': case '\t':
814: begin=pc.source;
815: begin_pos=pc.pos;
816: continue; // skip it
817: default:
818: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
819: goto break2;
820: }
1.112 paf 821: break;
822:
823: // #COMMENT
1.194 paf 824: case LS_USER_COMMENT:
1.112 paf 825: if(c=='\n') {
826: // skip comment
1.206 paf 827: begin=pc.source;
828: begin_pos=pc.pos;
1.112 paf 829:
1.206 paf 830: pop_LS(pc);
1.112 paf 831: continue;
1.1 paf 832: }
1.48 paf 833: break;
834:
835: // STRING IN EXPRESSION
1.145 parser 836: case LS_EXPRESSION_STRING_QUOTED:
837: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 838: switch(c) {
839: case '"':
1.145 parser 840: case '\'':
841: if(
1.206 paf 842: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
843: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
844: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 845: RC;
846: }
847: break;
1.48 paf 848: case '$':
1.206 paf 849: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 850: RC;
851: case '^':
1.206 paf 852: push_LS(pc, LS_METHOD_NAME);
1.48 paf 853: RC;
1.10 paf 854: }
855: break;
856:
857: // METHOD DEFINITION
858: case LS_DEF_NAME:
1.48 paf 859: switch(c) {
860: case '[':
1.206 paf 861: pc.ls=LS_DEF_PARAMS;
1.48 paf 862: RC;
863: case '\n':
1.206 paf 864: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 865: RC;
1.10 paf 866: }
867: break;
1.48 paf 868:
1.10 paf 869: case LS_DEF_PARAMS:
1.48 paf 870: switch(c) {
1.192 paf 871: case '$': // common error
1.193 paf 872: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
873: goto break2;
1.48 paf 874: case ';':
875: RC;
876: case ']':
1.206 paf 877: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 878: RC;
1.49 paf 879: case '\n': // wrong. bailing out
1.206 paf 880: pop_LS(pc);
1.48 paf 881: RC;
1.10 paf 882: }
883: break;
1.48 paf 884:
1.10 paf 885: case LS_DEF_LOCALS:
1.48 paf 886: switch(c) {
887: case '[':
888: case ';':
889: RC;
890: case ']':
1.206 paf 891: pc.ls=LS_DEF_COMMENT;
1.48 paf 892: RC;
893: case '\n': // wrong. bailing out
1.206 paf 894: pop_LS(pc);
1.48 paf 895: RC;
1.10 paf 896: }
897: break;
1.48 paf 898:
1.10 paf 899: case LS_DEF_COMMENT:
900: if(c=='\n') {
1.206 paf 901: pop_LS(pc);
1.48 paf 902: RC;
1.37 paf 903: }
904: break;
905:
1.48 paf 906: case LS_DEF_SPECIAL_BODY:
1.175 paf 907: if(c=='\n')
1.48 paf 908: RC;
909: break;
910:
911: // (EXPRESSION)
1.69 paf 912: case LS_VAR_ROUND:
913: case LS_METHOD_ROUND:
1.48 paf 914: switch(c) {
915: case ')':
916: if(--lexical_brackets_nestage==0)
1.206 paf 917: if(pc.ls==LS_METHOD_ROUND) // method round param ended
918: pc.ls=LS_METHOD_AFTER; // look for method end
919: else // pc.ls==LS_VAR_ROUND // variable constructor ended
920: pop_LS(pc); // return to normal life
1.48 paf 921: RC;
1.194 paf 922: case '#': // comment start skipping
923: if(end!=begin) {
1.206 paf 924: if(!pc.string_start)
925: pc.string_start=begin_pos;
1.194 paf 926: // append piece till #
1.206 paf 927: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 928: }
929: // fall into COMMENT lexical state [wait for \n]
1.206 paf 930: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 931: lexical_brackets_nestage=1;
932: continue;
1.48 paf 933: case '$':
1.206 paf 934: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 935: RC;
936: case '^':
1.206 paf 937: push_LS(pc, LS_METHOD_NAME);
1.48 paf 938: RC;
939: case '(':
940: lexical_brackets_nestage++;
941: RC;
1.67 paf 942: case '-':
1.206 paf 943: switch(*pc.source) {
1.127 paf 944: case 'f': // -f
1.67 paf 945: skip_analized=1;
946: result=FEXISTS;
1.127 paf 947: goto break2;
948: case 'd': // -d
949: skip_analized=1;
950: result=DEXISTS;
951: goto break2;
1.191 paf 952: default: // minus
1.67 paf 953: result=c;
1.127 paf 954: goto break2;
955: }
1.67 paf 956: goto break2;
1.173 paf 957: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 958: case '~':
1.48 paf 959: case ';':
960: RC;
1.193 paf 961: case '&': case '|':
1.206 paf 962: if(*pc.source==c) { // && ||
1.193 paf 963: result=c=='&'?LAND:LOR;
1.67 paf 964: skip_analized=1;
1.58 paf 965: } else
966: result=c;
967: goto break2;
1.193 paf 968: case '!':
1.206 paf 969: switch(pc.source[0]) {
1.193 paf 970: case '|': // !| !||
971: skip_analized=1;
1.206 paf 972: if(pc.source[1]=='|') {
1.193 paf 973: skip_analized++;
974: result=LXOR;
975: } else
976: result=NXOR;
977: goto break2;
978: case '=': // !=
979: skip_analized=1;
980: result=NNE;
981: goto break2;
982: }
983: RC;
1.195 paf 984:
985: case '<': // <<, <=, <
1.206 paf 986: switch(*pc.source) {
1.195 paf 987: case '<': // <[<]
988: skip_analized=1; result=NSL; break;
989: case '=': // <[=]
990: skip_analized=1; result=NLE; break;
991: default: // <[]
992: result=c; break;
993: }
994: goto break2;
995: case '>': // >>, >=, >
1.206 paf 996: switch(*pc.source) {
1.195 paf 997: case '>': // >[>]
998: skip_analized=1; result=NSR; break;
999: case '=': // >[=]
1000: skip_analized=1; result=NGE; break;
1001: default: // >[]
1002: result=c; break;
1003: }
1004: goto break2;
1005: case '=': // ==
1.206 paf 1006: switch(*pc.source) {
1.195 paf 1007: case '=': // =[=]
1008: skip_analized=1; result=NEQ; break;
1009: default: // =[]
1010: result=c; break; // not used now
1011: }
1.58 paf 1012: goto break2;
1.195 paf 1013:
1.48 paf 1014: case '"':
1.206 paf 1015: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1016: RC;
1017: case '\'':
1.206 paf 1018: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1019: RC;
1.50 paf 1020: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1021: if(end==begin) // right after whitespace
1.206 paf 1022: if(isspace(pc.source[1])) {
1023: switch(*pc.source) {
1.117 paf 1024: // case '?': // ok [and bad cases, yacc would bark at them]
1025: case 't': // lt gt [et nt]
1026: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1027: skip_analized=1;
1028: goto break2;
1029: case 'e': // le ge ne [ee]
1030: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1031: skip_analized=1;
1032: goto break2;
1033: case 'q': // eq [lq gq nq]
1034: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1035: skip_analized=1;
1036: goto break2;
1037: }
1.67 paf 1038: }
1039: break;
1040: case 'i':
1041: if(end==begin) // right after whitespace
1.206 paf 1042: if(isspace(pc.source[1])) {
1043: switch(pc.source[0]) {
1.117 paf 1044: case 'n': // in
1.95 paf 1045: skip_analized=1;
1046: result=IN;
1047: goto break2;
1.117 paf 1048: case 's': // is
1.95 paf 1049: skip_analized=1;
1050: result=IS;
1051: goto break2;
1052: }
1.67 paf 1053: }
1054: break;
1055: case 'd':
1056: if(end==begin) // right after whitespace
1.206 paf 1057: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.67 paf 1058: skip_analized=2;
1059: result=DEF;
1.58 paf 1060: goto break2;
1.50 paf 1061: }
1.48 paf 1062: break;
1063: case ' ': case '\t': case '\n':
1.63 paf 1064: if(end!=begin) { // there were a string after previous operator?
1065: result=0; // return that string
1066: goto break2;
1.48 paf 1067: }
1.63 paf 1068: // that's a leading|traling space or after-operator-space
1069: // ignoring it
1070: // reset piece 'begin' position & line
1.206 paf 1071: begin=pc.source; // after whitespace char
1072: begin_pos=pc.pos;
1.48 paf 1073: continue;
1.1 paf 1074: }
1075: break;
1.194 paf 1076: case LS_EXPRESSION_COMMENT:
1077: if(c=='(')
1078: lexical_brackets_nestage++;
1079:
1.206 paf 1080: switch(*pc.source) {
1.194 paf 1081: case '\n': case ')':
1.206 paf 1082: if(*pc.source==')')
1.194 paf 1083: if(--lexical_brackets_nestage!=0)
1084: continue;
1085:
1086: // skip comment
1.206 paf 1087: begin=pc.source;
1088: begin_pos=pc.pos;
1.194 paf 1089:
1.206 paf 1090: pop_LS(pc);
1.194 paf 1091: continue;
1092: }
1093: break;
1.1 paf 1094:
1.10 paf 1095: // VARIABLE GET/PUT/WITH
1.166 parser 1096: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1097: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1098: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1099: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1100: if(
1.206 paf 1101: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1102: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1103: // name in expr ends also before
1.48 paf 1104: switch(c) {
1.181 paf 1105: // expression minus
1.92 paf 1106: case '-':
1.181 paf 1107: // expression integer division
1108: case '\\':
1.206 paf 1109: pop_LS(pc);
1110: pc.ungetc();
1.48 paf 1111: result=EON;
1112: goto break2;
1113: }
1114: }
1.166 parser 1115: if(
1.206 paf 1116: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1117: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1118: // name already has ':', stop before next
1119: switch(c) {
1120: case ':':
1.206 paf 1121: pop_LS(pc);
1122: pc.ungetc();
1.142 parser 1123: result=EON;
1124: goto break2;
1125: }
1126: }
1.48 paf 1127: switch(c) {
1128: case 0:
1129: case ' ': case '\t': case '\n':
1130: case ';':
1.126 paf 1131: case ']': case '}': case ')':
1132: case '"': case '\'':
1.139 parser 1133: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1134: case '+': case '*': case '/': case '%':
1135: case '&': case '|':
1136: case '=': case '!':
1.99 paf 1137: // common delimiters
1.190 paf 1138: case ',': case '?': case '#':
1.139 parser 1139: // before call
1140: case '^':
1.206 paf 1141: pop_LS(pc);
1142: pc.ungetc();
1.13 paf 1143: result=EON;
1.1 paf 1144: goto break2;
1.48 paf 1145: case '[':
1.162 parser 1146: // $name.<[>code]
1.206 paf 1147: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1148: end[-1]=='$'/*was start of get*/ ||
1149: end[-1]==':'/*was class name delim */ ||
1150: end[-1]=='.'/*was name delim */
1.162 parser 1151: )) {
1.206 paf 1152: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1153: lexical_brackets_nestage=1;
1154: RC;
1155: }
1.206 paf 1156: pc.ls=LS_VAR_SQUARE;
1.1 paf 1157: lexical_brackets_nestage=1;
1.48 paf 1158: RC;
1159: case '{':
1160: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1161: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1162: } else {
1.206 paf 1163: pc.ls=LS_VAR_CURLY;
1.48 paf 1164: lexical_brackets_nestage=1;
1165: }
1.69 paf 1166:
1.48 paf 1167: RC;
1168: case '(':
1.206 paf 1169: pc.ls=LS_VAR_ROUND;
1.1 paf 1170: lexical_brackets_nestage=1;
1.48 paf 1171: RC;
1172: case '.': // name part delim
1173: case '$': // name part subvar
1.160 parser 1174: case ':': // class<:>name
1.166 parser 1175: // go to _WITHOUT_COLON state variant...
1.206 paf 1176: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1177: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1178: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1179: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1180: // ...stop before next ':'
1.48 paf 1181: RC;
1.1 paf 1182: }
1183: break;
1.48 paf 1184:
1.1 paf 1185: case LS_VAR_NAME_CURLY:
1.48 paf 1186: switch(c) {
1.162 parser 1187: case '[':
1.166 parser 1188: // ${name.<[>code]}
1.206 paf 1189: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1190: lexical_brackets_nestage=1;
1191: RC;
1.48 paf 1192: case '}': // ${name} finished, restoring LS
1.206 paf 1193: pop_LS(pc);
1.48 paf 1194: RC;
1195: case '.': // name part delim
1196: case '$': // name part subvar
1197: case ':': // ':name' or 'class:name'
1198: RC;
1.1 paf 1199: }
1200: break;
1.48 paf 1201:
1202: case LS_VAR_SQUARE:
1203: switch(c) {
1204: case '$':
1.206 paf 1205: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1206: RC;
1207: case '^':
1.206 paf 1208: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1209: RC;
1210: case ']':
1.1 paf 1211: if(--lexical_brackets_nestage==0) {
1.206 paf 1212: pop_LS(pc);
1.48 paf 1213: RC;
1.1 paf 1214: }
1.48 paf 1215: break;
1216: case ';': // operator_or_fmt;value delim
1217: RC;
1218: case '[':
1219: lexical_brackets_nestage++;
1220: break;
1.1 paf 1221: }
1222: break;
1.48 paf 1223:
1.1 paf 1224: case LS_VAR_CURLY:
1.48 paf 1225: switch(c) {
1226: case '$':
1.206 paf 1227: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1228: RC;
1229: case '^':
1.206 paf 1230: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1231: RC;
1232: case '}':
1.1 paf 1233: if(--lexical_brackets_nestage==0) {
1.206 paf 1234: pop_LS(pc);
1.48 paf 1235: RC;
1.1 paf 1236: }
1.48 paf 1237: break;
1238: case '{':
1.1 paf 1239: lexical_brackets_nestage++;
1.48 paf 1240: break;
1241: }
1.1 paf 1242: break;
1243:
1.10 paf 1244: // METHOD CALL
1.1 paf 1245: case LS_METHOD_NAME:
1.48 paf 1246: switch(c) {
1247: case '[':
1.166 parser 1248: // ^name.<[>code].xxx
1.206 paf 1249: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1250: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1251: end[-1]==':'/*was class name delim */ ||
1252: end[-1]=='.'/*was name delim */
1.162 parser 1253: )) {
1.206 paf 1254: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1255: lexical_brackets_nestage=1;
1256: RC;
1257: }
1.206 paf 1258: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1259: lexical_brackets_nestage=1;
1.48 paf 1260: RC;
1261: case '{':
1.206 paf 1262: pc.ls=LS_METHOD_CURLY;
1.1 paf 1263: lexical_brackets_nestage=1;
1.48 paf 1264: RC;
1.69 paf 1265: case '(':
1.206 paf 1266: pc.ls=LS_METHOD_ROUND;
1.69 paf 1267: lexical_brackets_nestage=1;
1268: RC;
1.48 paf 1269: case '.': // name part delim
1270: case '$': // name part subvar
1271: case ':': // ':name' or 'class:name'
1.170 parser 1272: case '^': // ^abc^xxx wrong. bailing out
1273: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1274: case ' ': // ^if ( wrong. bailing out
1.48 paf 1275: RC;
1.1 paf 1276: }
1277: break;
1.48 paf 1278:
1279: case LS_METHOD_SQUARE:
1280: switch(c) {
1281: case '$':
1.206 paf 1282: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1283: RC;
1284: case '^':
1.206 paf 1285: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1286: RC;
1287: case ';': // param delim
1288: RC;
1289: case ']':
1.1 paf 1290: if(--lexical_brackets_nestage==0) {
1.206 paf 1291: pc.ls=LS_METHOD_AFTER;
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;
1.48 paf 1300:
1.1 paf 1301: case LS_METHOD_CURLY:
1.48 paf 1302: switch(c) {
1303: case '$':
1.206 paf 1304: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1305: RC;
1306: case '^':
1.206 paf 1307: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1308: RC;
1309: case ';': // param delim
1.48 paf 1310: RC;
1311: case '}':
1.1 paf 1312: if(--lexical_brackets_nestage==0) {
1.206 paf 1313: pc.ls=LS_METHOD_AFTER;
1.48 paf 1314: RC;
1.1 paf 1315: }
1.48 paf 1316: break;
1317: case '{':
1.1 paf 1318: lexical_brackets_nestage++;
1.48 paf 1319: break;
1320: }
1.209 paf 1321: if(pc.explicit_result && c)
1322: switch(c) {
1323: case '\n': case ' ': case '\t':
1324: begin=pc.source;
1325: begin_pos=pc.pos;
1326: continue; // skip it
1327: default:
1328: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
1329: goto break2;
1330: }
1.1 paf 1331: break;
1.48 paf 1332:
1.1 paf 1333: case LS_METHOD_AFTER:
1.69 paf 1334: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1335: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1336: lexical_brackets_nestage=1;
1.48 paf 1337: RC;
1.1 paf 1338: }
1.69 paf 1339: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1340: pc.ls=LS_METHOD_CURLY;
1.69 paf 1341: lexical_brackets_nestage=1;
1342: RC;
1343: }
1344: if(c=='(') {/* ]( }( )( */
1.206 paf 1345: pc.ls=LS_METHOD_ROUND;
1.1 paf 1346: lexical_brackets_nestage=1;
1.48 paf 1347: RC;
1.1 paf 1348: }
1.206 paf 1349: pop_LS(pc);
1350: pc.ungetc();
1.13 paf 1351: result=EON;
1.1 paf 1352: goto break2;
1353: }
1.9 paf 1354: if(c==0) {
1.1 paf 1355: result=-1;
1356: break;
1357: }
1358: }
1359:
1360: break2:
1.59 paf 1361: if(end!=begin) { // there is last piece?
1362: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1363: // strip last \n
1.10 paf 1364: end--;
1.137 parser 1365: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1366: end--;
1.59 paf 1367: }
1.206 paf 1368: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1369: if(!pc.string_start)
1370: pc.string_start=begin_pos;
1.59 paf 1371: // append it
1.206 paf 1372: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1373: }
1.59 paf 1374: }
1.206 paf 1375: if(!pc.string.is_empty()) { // something accumulated?
1376: // create STRING value: array of OP_VALUE+origin+vstring
1377: *lvalp=VL(
1378: new VString(*new String(pc.string, String::L_CLEAN)),
1379: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1380: // new pieces storage
1.206 paf 1381: pc.string.clear();
1382: pc.string_start.clear();
1.58 paf 1383: // make current result be pending for next call, return STRING for now
1.206 paf 1384: pc.pending_state=result; result=STRING;
1.58 paf 1385: }
1.67 paf 1386: if(skip_analized) {
1.206 paf 1387: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1388: }
1.58 paf 1389: return result;
1.1 paf 1390: }
1391:
1.206 paf 1392: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1393: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1394: return 1;
1.110 paf 1395: }
1.1 paf 1396:
1.110 paf 1397: static void yyprint(FILE *file, int type, YYSTYPE value) {
1398: if(type==STRING)
1.206 paf 1399: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1400: }
E-mail:
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to compile.y CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [parser3project] / parser3 / src / main