Annotation of parser3/src/main/compile.y, revision 1.216
1.168 parser 1: %{
1.105 paf 2: /** @file
1.106 paf 3: Parser: compiler(lexical parser and grammar).
4:
1.215 paf 5: Copyright (c) 2001-2005 ArtLebedev Group (http://www.artlebedev.com)
1.168 parser 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.88 paf 7: */
8:
1.106 paf 9: /**
10: @todo parser4:
11: - cache compiled code from request to request. to do that...
12: -#: make method definitions, @CLASS, @BASE, @USE instructions,
1.88 paf 13: which would be executed afterwards, and actions
14: now performed at compile time would be delayed to run time.
1.106 paf 15: -#: make cache expiration on time and on disk-change of class source
16: -#: in apache use subpools for compiled class storage
17: -#: in iis make up specialized Pool object for that
1.24 paf 18: */
19:
1.206 paf 20: #define YYSTYPE ArrayOperation*
1.9 paf 21: #define YYPARSE_PARAM pc
22: #define YYLEX_PARAM pc
23: #define YYDEBUG 1
1.106 paf 24: #define YYERROR_VERBOSE 1
1.206 paf 25: #define yyerror(msg) real_yyerror((Parse_control *)pc, msg)
1.9 paf 26: #define YYPRINT(file, type, value) yyprint(file, type, value)
1.1 paf 27:
1.206 paf 28: // includes
29:
1.1 paf 30: #include "compile_tools.h"
1.8 paf 31: #include "pa_value.h"
1.12 paf 32: #include "pa_request.h"
1.39 paf 33: #include "pa_vobject.h"
1.52 paf 34: #include "pa_vdouble.h"
1.98 paf 35: #include "pa_globals.h"
1.141 parser 36: #include "pa_vvoid.h"
1.200 paf 37: #include "pa_vmethod_frame.h"
1.39 paf 38:
1.206 paf 39: // defines
40:
1.97 paf 41: #define USE_CONTROL_METHOD_NAME "USE"
1.1 paf 42:
1.206 paf 43: // forwards
44:
45: static int real_yyerror(Parse_control* pc, char* s);
46: static void yyprint(FILE* file, int type, YYSTYPE value);
47: static int yylex(YYSTYPE* lvalp, void* pc);
1.1 paf 48:
1.216 ! paf 49: static const VBool vfalse(false);
! 50: static const VBool vtrue(true);
! 51: static const VVoid vvoid;
! 52:
1.8 paf 53: // local convinient inplace typecast & var
1.205 paf 54: #undef PC
1.206 paf 55: #define PC (*(Parse_control *)pc)
56: #undef POOL
1.114 paf 57: #define POOL (*PC.pool)
1.107 paf 58: #ifndef DOXYGEN
1.1 paf 59: %}
60:
61: %pure_parser
62:
1.13 paf 63: %token EON
1.4 paf 64: %token STRING
1.1 paf 65: %token BOGUS
1.55 paf 66:
1.58 paf 67: %token BAD_STRING_COMPARISON_OPERATOR
1.114 paf 68: %token BAD_HEX_LITERAL
1.171 parser 69: %token BAD_METHOD_DECL_START
1.193 paf 70: %token BAD_METHOD_PARAMETER_NAME_CHARACTER
1.209 paf 71: %token BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE
1.58 paf 72:
1.59 paf 73: %token LAND "&&"
1.58 paf 74: %token LOR "||"
1.193 paf 75: %token LXOR "!||"
76: %token NXOR "!|"
1.58 paf 77:
78: %token NLE "<="
79: %token NGE ">="
80: %token NEQ "=="
81: %token NNE "!="
1.195 paf 82: %token NSL "<<"
83: %token NSR ">>"
1.58 paf 84:
85: %token SLT "lt"
86: %token SGT "gt"
87: %token SLE "le"
88: %token SGE "ge"
89: %token SEQ "eq"
90: %token SNE "ne"
91:
1.67 paf 92: %token DEF "def"
93: %token IN "in"
94: %token FEXISTS "-f"
1.127 paf 95: %token DEXISTS "-d"
1.95 paf 96: %token IS "is"
1.67 paf 97:
1.216 ! paf 98: %token LITERAL_TRUE "true"
! 99: %token LITERAL_FALSE "false"
! 100:
1.57 paf 101: /* logical */
1.193 paf 102: %left "!||"
1.57 paf 103: %left "||"
104: %left "&&"
1.131 paf 105: %left '<' '>' "<=" ">=" "lt" "gt" "le" "ge"
106: %left "==" "!=" "eq" "ne"
107: %left "is" "def" "in" "-f" "-d"
1.57 paf 108:
109: /* bitwise */
1.193 paf 110: %left "!|"
1.131 paf 111: %left '|'
112: %left '&'
1.202 paf 113: %left "<<" ">>"
1.57 paf 114:
1.56 paf 115: /* numerical */
1.202 paf 116: %left '+' '-'
117: %left '*' '/' '\\' '%'
118: %left NUNARY /* unary - + */
119:
120: /* out-of-group */
121: %left '~' /* bitwise */
122: %left '!' /* logical */
1.1 paf 123:
124: %%
1.195 paf 125: all:
1.10 paf 126: one_big_piece {
1.206 paf 127: Method& method=*new Method(Method::CT_ANY,
1.81 paf 128: 0, 0, /*min, max numbered_params_count*/
1.75 paf 129: 0/*param_names*/, 0/*local_names*/,
130: $1/*parser_code*/, 0/*native_code*/);
1.206 paf 131: PC.cclass->add_method(PC.alias_method(main_method_name), method);
1.10 paf 132: }
133: | methods;
134:
135: methods: method | methods method;
136: one_big_piece: maybe_codes;
137:
1.34 paf 138: method: control_method | code_method;
139:
140: control_method: '@' STRING '\n'
1.132 paf 141: maybe_control_strings {
1.206 paf 142: const String& command=*LA2S(*$2);
1.34 paf 143: YYSTYPE strings_code=$4;
1.206 paf 144: if(strings_code->count()<1*OPERATIONS_PER_OPVALUE) {
1.114 paf 145: strcpy(PC.error, "@");
146: strcat(PC.error, command.cstr());
147: strcat(PC.error, " is empty");
1.37 paf 148: YYERROR;
149: }
1.74 paf 150: if(command==CLASS_NAME) {
1.188 paf 151: if(PC.cclass->base_class()) { // already changed from default?
1.114 paf 152: strcpy(PC.error, "class already have a name '");
153: strncat(PC.error, PC.cclass->name().cstr(), 100);
154: strcat(PC.error, "'");
1.73 paf 155: YYERROR;
156: }
1.206 paf 157: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.73 paf 158: // new class' name
1.206 paf 159: const String& name=*LA2S(*strings_code);
1.73 paf 160: // creating the class
1.206 paf 161: VStateless_class* cclass=new VClass;
162: PC.cclass=cclass;
163: PC.cclass->set_name(name);
1.73 paf 164: // append to request's classes
1.206 paf 165: PC.request.classes().put(name, cclass);
1.73 paf 166: } else {
1.206 paf 167: strcpy(PC.error, "@"CLASS_NAME" must contain only one line with class name (contains more then one)");
1.34 paf 168: YYERROR;
169: }
1.130 paf 170: } else if(command==USE_CONTROL_METHOD_NAME) {
1.206 paf 171: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE)
172: PC.request.use_file(PC.request.main_class, *LA2S(*strings_code, i));
1.130 paf 173: } else if(command==BASE_NAME) {
1.188 paf 174: if(PC.cclass->base_class()) { // already changed from default?
1.130 paf 175: strcpy(PC.error, "class already have a base '");
1.188 paf 176: strncat(PC.error, PC.cclass->base_class()->name().cstr(), 100);
1.130 paf 177: strcat(PC.error, "'");
178: YYERROR;
179: }
1.206 paf 180: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
181: const String& base_name=*LA2S(*strings_code);
182: if(Value* base_class_value=PC.request.classes().get(base_name)) {
183: // @CLASS == @BASE sanity check
184: if(VStateless_class *base_class=base_class_value->get_class()) {
185: if(PC.cclass==base_class) {
186: strcpy(PC.error, "@"CLASS_NAME" equals @"BASE_NAME);
187: YYERROR;
188: }
189: PC.cclass->get_class()->set_base(base_class);
190: } else { // they asked to derive from a class without methods ['env' & co]
191: strcpy(PC.error, base_name.cstr());
192: strcat(PC.error, ": you can not derive from this class in @"BASE_NAME);
193: YYERROR;
194: }
195: } else {
1.130 paf 196: strcpy(PC.error, base_name.cstr());
197: strcat(PC.error, ": undefined class in @"BASE_NAME);
1.73 paf 198: YYERROR;
199: }
1.34 paf 200: } else {
1.130 paf 201: strcpy(PC.error, "@"BASE_NAME" must contain sole name");
1.34 paf 202: YYERROR;
203: }
1.130 paf 204: } else {
205: strcpy(PC.error, "'");
206: strncat(PC.error, command.cstr(), MAX_STRING/2);
207: strcat(PC.error, "' invalid special name. valid names are "
208: "'"CLASS_NAME"', '"USE_CONTROL_METHOD_NAME"' and '"BASE_NAME"'");
209: YYERROR;
1.34 paf 210: }
211: };
1.132 paf 212: maybe_control_strings: empty | control_strings;
1.206 paf 213: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2) };
1.37 paf 214: control_string: maybe_string '\n';
215: maybe_string: empty | STRING;
1.34 paf 216:
1.208 paf 217: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n' {
218: PC.explicit_result=false;
1.206 paf 219: const String& name=*LA2S(*$2);
1.10 paf 220:
221: YYSTYPE params_names_code=$3;
1.206 paf 222: ArrayString* params_names=0;
223: if(int size=params_names_code->count()) {
224: params_names=new ArrayString;
225: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
226: *params_names+=LA2S(*params_names_code, i);
1.75 paf 227: }
1.10 paf 228:
229: YYSTYPE locals_names_code=$4;
1.206 paf 230: ArrayString* locals_names=0;
231: if(int size=locals_names_code->count()) {
232: locals_names=new ArrayString;
1.208 paf 233: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE) {
234: const String* local_name=LA2S(*locals_names_code, i);
235: if(*local_name==RESULT_VAR_NAME)
236: PC.explicit_result=true;
237: else
238: *locals_names+=local_name;
239: }
1.75 paf 240: }
1.10 paf 241:
1.208 paf 242: Method* method=new Method(
1.206 paf 243: //name,
1.122 paf 244: Method::CT_ANY,
1.81 paf 245: 0, 0/*min,max numbered_params_count*/,
1.76 paf 246: params_names, locals_names,
1.208 paf 247: 0/*to be filled later in next {} */, 0);
248: PC.cclass->add_method(PC.alias_method(name), *method);
249: *reinterpret_cast<Method**>(&$$)=method;
250:
251: // todo: check [][;result;]
252: } maybe_codes {
253: // fill in the code
254: reinterpret_cast<Method*>($7)->parser_code=$8;
1.8 paf 255: };
1.10 paf 256:
257: maybe_bracketed_strings: empty | bracketed_maybe_strings;
258: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
259: maybe_strings: empty | strings;
1.206 paf 260: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3) };
1.10 paf 261:
262: maybe_comment: empty | STRING;
1.1 paf 263:
264: /* codes */
265:
1.10 paf 266: maybe_codes: empty | codes;
267:
1.206 paf 268: codes: code | codes code { $$=$1; P(*$$, *$2) };
1.81 paf 269: code: write_string | action;
1.209 paf 270: action: get | put | call;
1.1 paf 271:
272: /* get */
273:
1.64 paf 274: get: get_value {
1.184 paf 275: $$=$1; /* stack: resulting value */
1.206 paf 276: changetail_or_append(*$$,
1.186 paf 277: OP_GET_ELEMENT, false, /*->*/OP_GET_ELEMENT__WRITE,
278: /*or */OP_WRITE_VALUE
1.184 paf 279: ); /* value=pop; wcontext.write(value) */
1.1 paf 280: };
1.163 parser 281: get_value: '$' get_name_value { $$=$2 };
1.64 paf 282: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 283: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 284: name_without_curly_rdive:
285: name_without_curly_rdive_read
286: | name_without_curly_rdive_class;
1.19 paf 287: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 288: $$=N();
289: ArrayOperation* diving_code=$1;
290: const String* first_name=LA2S(*diving_code);
1.179 paf 291: // self.xxx... -> xxx...
1.206 paf 292: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 293: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.206 paf 294: O(*yyval, OP_WITH_SELF); /* stack: starting context */
295: P(*yyval, *diving_code,
1.22 paf 296: /* skip over... */
1.206 paf 297: diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.22 paf 298: } else {
1.206 paf 299: O(*yyval, OP_WITH_READ); /* stack: starting context */
1.179 paf 300:
1.201 paf 301: // ^if ELEMENT -> ^if ELEMENT_OR_OPERATOR
1.206 paf 302: // OP_VALUE+origin+string+OP_GET_ELEMENT. -> OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
303: if(PC.in_call_value && diving_code->count()==4)
304: diving_code->put(4-1, OP_GET_ELEMENT_OR_OPERATOR);
305: P(*$$, *diving_code);
1.22 paf 306: }
307: /* diving code; stack: current context */
1.1 paf 308: };
1.206 paf 309: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2) };
310: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2) };
1.1 paf 311:
312: /* put */
313:
1.81 paf 314: put: '$' name_expr_wdive construct {
1.20 paf 315: $$=$2; /* stack: context,name */
1.206 paf 316: P(*$$, *$3); /* stack: context,name,constructor_value */
1.20 paf 317: };
1.44 paf 318: name_expr_wdive:
1.157 parser 319: name_expr_wdive_root
320: | name_expr_wdive_write
1.44 paf 321: | name_expr_wdive_class;
1.157 parser 322: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 323: $$=N();
324: ArrayOperation* diving_code=$1;
325: const String* first_name=LA2S(*diving_code);
1.179 paf 326: // $self.xxx... -> $xxx...
1.206 paf 327: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 328: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.206 paf 329: O(*$$, OP_WITH_SELF); /* stack: starting context */
330: P(*$$, *diving_code,
1.23 paf 331: /* skip over... */
1.206 paf 332: diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.23 paf 333: } else {
1.206 paf 334: O(*$$, OP_WITH_ROOT); /* stack: starting context */
335: P(*$$, *diving_code);
1.23 paf 336: }
337: /* diving code; stack: current context */
1.156 parser 338: };
1.157 parser 339: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 340: $$=N();
341: O(*$$, OP_WITH_WRITE); /* stack: starting context */
342: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 343: };
1.206 paf 344: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2) };
1.20 paf 345:
1.149 parser 346: construct:
1.163 parser 347: construct_square
348: | construct_round
349: | construct_curly
1.149 parser 350: ;
1.211 paf 351: construct_square: '[' {
352: // allow $result_or_other_variable[ letters here any time ]
353: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
354: } any_constructor_code_value {
1.213 paf 355: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.211 paf 356: } ']' {
1.149 parser 357: // stack: context, name
1.211 paf 358: $$=$3; // stack: context, name, value
1.206 paf 359: O(*$$, OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 360: }
361: ;
1.149 parser 362: construct_round: '(' expr_value ')' {
1.206 paf 363: $$=N();
364: O(*$$, OP_PREPARE_TO_EXPRESSION);
1.149 parser 365: // stack: context, name
1.206 paf 366: P(*$$, *$2); // stack: context, name, value
367: O(*$$, OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 368: }
1.52 paf 369: ;
1.149 parser 370: construct_curly: '{' maybe_codes '}' {
371: // stack: context, name
1.206 paf 372: $$=N();
373: OA(*$$, OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 374: };
375:
1.55 paf 376: any_constructor_code_value:
1.157 parser 377: void_value /* optimized $var[] case */
1.52 paf 378: | STRING /* optimized $var[STRING] case */
1.55 paf 379: | constructor_code_value /* $var[something complex] */
1.1 paf 380: ;
1.55 paf 381: constructor_code_value: constructor_code {
1.206 paf 382: $$=N();
383: OA(*$$, OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 384: /* some code that writes to that context */
385: /* context=pop; stack: context.value() */
1.1 paf 386: };
1.55 paf 387: constructor_code: codes__excluding_sole_str_literal;
1.206 paf 388: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 389:
1.1 paf 390: /* call */
391:
1.66 paf 392: call: call_value {
393: $$=$1; /* stack: value */
1.206 paf 394: changetail_or_append(*$$,
1.186 paf 395: OP_CALL, true, /*->*/ OP_CALL__WRITE,
396: /*or */OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.66 paf 397: };
1.177 paf 398: call_value: '^' {
1.180 paf 399: PC.in_call_value=true;
1.177 paf 400: }
401: call_name {
1.180 paf 402: PC.in_call_value=false;
1.177 paf 403: }
1.154 parser 404: store_params EON { /* ^field.$method{vasya} */
405: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 406:
1.154 parser 407: YYSTYPE params_code=$5;
1.206 paf 408: if(params_code->count()==4) { // probably [] case. [OP_VALUE+origin+Void+STORE_PARAM]
409: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.140 parser 410: if(!value->is_defined()) // value is VVoid?
1.123 paf 411: params_code=0; // ^zzz[] case. don't append lone empty param.
1.186 paf 412: }
413: /* stack: context, method_junction */
1.206 paf 414: OA(*$$, OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
1.1 paf 415: };
416:
1.43 paf 417: call_name: name_without_curly_rdive;
1.38 paf 418:
1.206 paf 419: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2) };
1.69 paf 420: store_param:
421: store_square_param
422: | store_round_param
423: | store_curly_param
1.31 paf 424: ;
1.210 paf 425: store_square_param: '[' {
1.211 paf 426: // allow ^call[ letters here any time ]
1.210 paf 427: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
428: } store_code_param_parts {
1.213 paf 429: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.210 paf 430: } ']' {$$=$3};
1.69 paf 431: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 432: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 433: store_code_param_parts:
434: store_code_param_part
1.206 paf 435: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 436: ;
437: store_expr_param_parts:
438: store_expr_param_part
1.206 paf 439: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 440: ;
1.94 paf 441: store_curly_param_parts:
442: store_curly_param_part
1.206 paf 443: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3) }
1.94 paf 444: ;
1.120 paf 445: store_code_param_part: code_param_value {
1.32 paf 446: $$=$1;
1.206 paf 447: O(*$$, OP_STORE_PARAM);
1.120 paf 448: };
1.214 paf 449: store_expr_param_part: expr_value {
450: YYSTYPE expr_code=$1;
1.215 paf 451: if(expr_code->count()==3
1.216 ! paf 452: && (*expr_code)[0].code==OP_VALUE) { // optimizing (double/bool/incidently 'string' too) case. [OP_VALUE+origin+Double]
1.214 paf 453: $$=expr_code;
454: O(*$$, OP_STORE_PARAM); // no evaluating
455: } else {
456: ArrayOperation* code=N();
457: O(*code, OP_PREPARE_TO_EXPRESSION);
458: P(*code, *expr_code);
459: O(*code, OP_WRITE_EXPR_RESULT);
460: $$=N();
461: OA(*$$, OP_EXPR_CODE__STORE_PARAM, code);
462: }
1.69 paf 463: };
1.94 paf 464: store_curly_param_part: maybe_codes {
1.206 paf 465: $$=N();
466: OA(*$$, OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 467: };
1.120 paf 468: code_param_value:
1.157 parser 469: void_value /* optimized [;...] case */
1.120 paf 470: | STRING /* optimized [STRING] case */
471: | constructor_code_value /* [something complex] */
472: ;
1.1 paf 473:
474: /* name */
475:
1.206 paf 476: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 477:
1.206 paf 478: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 479: name_step: name_advance1 '.';
480: name_advance1: name_expr_value {
1.177 paf 481: // we know that name_advance1 not called from ^xxx context
482: // so we'll not check for operator call possibility as we do in name_advance2
483:
1.1 paf 484: /* stack: context */
485: $$=$1; /* stack: context,name */
1.206 paf 486: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 487: };
488: name_advance2: name_expr_value {
489: /* stack: context */
490: $$=$1; /* stack: context,name */
1.206 paf 491: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 492: }
1.4 paf 493: | STRING BOGUS
1.1 paf 494: ;
495: name_expr_value:
1.4 paf 496: STRING /* subname_is_const */
1.1 paf 497: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 498: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 499: | name_square_code_value /* [codes] */
1.1 paf 500: ;
501: name_expr_subvar_value: '$' subvar_ref_name_rdive {
502: $$=$2;
1.206 paf 503: O(*$$, OP_GET_ELEMENT);
1.1 paf 504: };
1.4 paf 505: name_expr_with_subvar_value: STRING subvar_get_writes {
1.206 paf 506: ArrayOperation* code;
1.183 paf 507: {
1.206 paf 508: change_string_literal_to_write_string_literal(*(code=$1));
509: P(*code, *$2);
1.183 paf 510: }
1.206 paf 511: $$=N();
512: OA(*$$, OP_STRING_POOL, code);
1.1 paf 513: };
1.212 paf 514: name_square_code_value: '[' {
515: // allow $result_or_other_variable[ letters here any time ]
516: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
517: } codes {
1.213 paf 518: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.212 paf 519: } ']' {
1.206 paf 520: $$=N();
1.212 paf 521: OA(*$$, OP_OBJECT_POOL, $3); /* stack: empty write context */
1.183 paf 522: /* some code that writes to that context */
523: /* context=pop; stack: context.value() */
1.160 parser 524: };
1.154 parser 525: subvar_ref_name_rdive: STRING {
1.206 paf 526: $$=N();
527: O(*$$, OP_WITH_READ);
528: P(*$$, *$1);
1.1 paf 529: };
1.206 paf 530: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 531: subvar__get_write: '$' subvar_ref_name_rdive {
532: $$=$2;
1.206 paf 533: O(*$$, OP_GET_ELEMENT__WRITE);
1.42 paf 534: };
535:
1.154 parser 536: class_prefix:
537: class_static_prefix
538: | class_constructor_prefix
539: ;
1.155 parser 540: class_static_prefix: STRING ':' {
541: $$=$1; // stack: class name string
1.206 paf 542: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
543: if(VStateless_class* base=PC.cclass->base_class()) {
544: change_string_literal_value(*$$, base->name());
1.189 paf 545: } else {
546: strcpy(PC.error, "no base class declared");
547: YYERROR;
548: }
549: }
1.206 paf 550: O(*$$, OP_GET_CLASS);
1.155 parser 551: };
552: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 553: $$=$1;
1.180 paf 554: if(!PC.in_call_value) {
1.154 parser 555: strcpy(PC.error, ":: not allowed here");
556: YYERROR;
557: }
1.206 paf 558: O(*$$, OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 559: };
560:
1.53 paf 561:
1.56 paf 562: /* expr */
1.53 paf 563:
1.214 paf 564: expr_value: expr;
1.56 paf 565: expr:
1.214 paf 566: double_or_STRING
1.216 ! paf 567: | true_value
! 568: | false_value
1.64 paf 569: | get_value
1.66 paf 570: | call_value
1.216 ! paf 571: | '"' string_inside_quotes_value '"' { $$ = $2 }
! 572: | '\'' string_inside_quotes_value '\'' { $$ = $2 }
1.60 paf 573: | '(' expr ')' { $$ = $2; }
574: /* stack: operand // stack: @operand */
1.206 paf 575: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP_NEG) }
1.202 paf 576: | '+' expr %prec NUNARY { $$=$2 }
1.206 paf 577: | '~' expr { $$=$2; O(*$$, OP_INV) }
578: | '!' expr { $$=$2; O(*$$, OP_NOT) }
579: | "def" expr { $$=$2; O(*$$, OP_DEF) }
580: | "in" expr { $$=$2; O(*$$, OP_IN) }
581: | "-f" expr { $$=$2; O(*$$, OP_FEXISTS) }
582: | "-d" expr { $$=$2; O(*$$, OP_DEXISTS) }
1.60 paf 583: /* stack: a,b // stack: a@b */
1.206 paf 584: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP_SUB) }
585: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP_ADD) }
586: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MUL) }
587: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP_DIV) }
588: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MOD) }
589: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP_INTDIV) }
590: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SL) }
591: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SR) }
592: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_AND) }
593: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_OR) }
594: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_XOR) }
595: | expr "&&" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_AND) }
596: | expr "||" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_OR) }
597: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP_LOG_XOR) }
598: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LT) }
599: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GT) }
600: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LE) }
601: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GE) }
602: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_EQ) }
603: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_NE) }
604: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LT) }
605: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GT) }
606: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LE) }
607: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GE) }
608: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_EQ) }
609: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_NE) }
610: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP_IS) }
1.56 paf 611: ;
1.214 paf 612:
613: double_or_STRING: STRING {
614: // optimized from OP_STRING->OP_VALUE for doubles
615: maybe_change_string_literal_to_double_literal(*($$=$1));
616: };
1.55 paf 617:
1.65 paf 618: string_inside_quotes_value: maybe_codes {
1.206 paf 619: $$=N();
620: OA(*$$, OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 621: /* some code that writes to that context */
622: /* context=pop; stack: context.get_string() */
1.53 paf 623: };
1.1 paf 624:
1.27 paf 625: /* basics */
1.1 paf 626:
1.81 paf 627: write_string: STRING {
1.209 paf 628: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
629: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 630: };
631:
1.216 ! paf 632: void_value: /* empty */ { $$=VL(/*we know that we will not change it*/const_cast<VVoid*>(&vvoid), 0, 0, 0) }
! 633: true_value: "true" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vtrue), 0, 0, 0) }
! 634: false_value: "false" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vfalse), 0, 0, 0) }
! 635:
1.206 paf 636: empty: /* empty */ { $$=N() };
1.1 paf 637:
638: %%
1.105 paf 639: #endif
1.1 paf 640:
641: /*
642: 000$111(2222)00
643: 000$111{3333}00
1.9 paf 644: $,^: push,=0
1.1 paf 645: 1:( { break=pop
646: 2:( ) pop
647: 3:{ } pop
648:
649: 000^111(2222)4444{33333}4000
1.9 paf 650: $,^: push,=0
1.1 paf 651: 1:( { break=pop
652: 2:( )=4
653: 3:{ }=4
654: 4:[^({]=pop
655: */
656:
1.206 paf 657: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
658: pc.source--;
659: if(pc.pos.col==0) {
660: --pc.pos.line; pc.pos.col=last_line_end_col;
661: } else
662: --pc.pos.col;
663:
664: }
665: static int yylex(YYSTYPE *lvalp, void *apc) {
666: register Parse_control& pc=*static_cast<Parse_control*>(apc);
667:
668: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 669: #define RC {result=c; goto break2; }
1.1 paf 670:
1.206 paf 671: register int c;
672: int result;
1.1 paf 673:
1.206 paf 674: if(pc.pending_state) {
675: result=pc.pending_state;
676: pc.pending_state=0;
1.1 paf 677: return result;
678: }
679:
1.206 paf 680: const char *begin=pc.source;
681: Pos begin_pos=pc.pos;
1.91 paf 682: const char *end;
1.67 paf 683: int skip_analized=0;
1.50 paf 684: while(true) {
1.206 paf 685: c=*(end=(pc.source++));
686: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 687:
1.208 paf 688: if(c=='\n')
1.206 paf 689: pc.pos_next_line();
1.208 paf 690: else
1.206 paf 691: pc.pos_next_c(c);
1.208 paf 692: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 693:
1.208 paf 694: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 695: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 696: // @SPECIAL
697: // ...
698: // @<here =
1.206 paf 699: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 700: } // continuing checks
1.206 paf 701: if(pc.ls==LS_USER) {
702: push_LS(pc, LS_DEF_NAME);
1.171 parser 703: RC;
1.175 paf 704: } else // @ in first column inside some code [when could that be?]
1.171 parser 705: result=BAD_METHOD_DECL_START;
706: goto break2;
1.209 paf 707: }
708: if(c=='^') {
1.206 paf 709: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 710: // handle after-method situation
1.206 paf 711: pop_LS(pc);
1.203 paf 712: result=EON;
713: skip_analized=-1; // return to punctuation afterwards to assure it's literality
714: goto break2;
715: }
1.206 paf 716: switch(pc.ls) {
1.169 parser 717: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
718: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
719: case LS_VAR_NAME_SIMPLE_WITH_COLON:
720: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
721: case LS_VAR_NAME_CURLY:
722: case LS_METHOD_NAME:
1.194 paf 723: case LS_USER_COMMENT:
1.169 parser 724: case LS_DEF_COMMENT:
725: // no literals in names, please
726: break;
727: default:
1.206 paf 728: switch(*pc.source) {
1.165 parser 729: // ^escaping some punctuators
1.48 paf 730: case '^': case '$': case ';':
1.126 paf 731: case '(': case ')':
1.48 paf 732: case '[': case ']':
733: case '{': case '}':
1.172 parser 734: case '"': case ':':
1.40 paf 735: if(end!=begin) {
1.206 paf 736: if(!pc.string_start)
737: pc.string_start=begin_pos;
1.40 paf 738: // append piece till ^
1.206 paf 739: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 740: }
1.63 paf 741: // reset piece 'begin' position & line
1.206 paf 742: begin=pc.source; // ->punctuation
743: begin_pos=pc.pos;
1.203 paf 744: // skip over _ after ^
1.206 paf 745: pc.source++; pc.pos.col++;
1.203 paf 746: // skip analysis = forced literal
747: continue;
1.114 paf 748:
749: // converting ^#HH into char(hex(HH))
750: case '#':
751: if(end!=begin) {
1.206 paf 752: if(!pc.string_start)
753: pc.string_start=begin_pos;
1.114 paf 754: // append piece till ^
1.206 paf 755: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 756: }
757: // #HH ?
1.206 paf 758: if(pc.source[0]=='#' && pc.source[1] && pc.source[2]) {
759: char c=
760: hex_value[(unsigned char)pc.source[1]]*0x10+
761: hex_value[(unsigned char)pc.source[2]];
762: if(c==0) {
1.114 paf 763: result=BAD_HEX_LITERAL;
764: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
765: }
766: // append char(hex(HH))
1.206 paf 767: pc.string.append(c);
1.114 paf 768: // skip over ^#HH
1.206 paf 769: pc.source+=3;
770: pc.pos.col+=3;
1.114 paf 771: // reset piece 'begin' position & line
1.206 paf 772: begin=pc.source; // ->after ^#HH
773: begin_pos=pc.pos;
1.203 paf 774: // skip analysis = forced literal
1.114 paf 775: continue;
776: }
777: break;
1.1 paf 778: }
1.169 parser 779: break;
1.203 paf 780: }
1.169 parser 781: }
1.113 paf 782: // #comment start skipping
1.206 paf 783: if(c=='#' && pc.pos.col==1) {
1.112 paf 784: if(end!=begin) {
1.206 paf 785: if(!pc.string_start)
786: pc.string_start=begin_pos;
1.112 paf 787: // append piece till #
1.206 paf 788: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 789: }
790: // fall into COMMENT lexical state [wait for \n]
1.206 paf 791: push_LS(pc, LS_USER_COMMENT);
1.175 paf 792: continue;
1.112 paf 793: }
1.206 paf 794: switch(pc.ls) {
1.10 paf 795:
796: // USER'S = NOT OURS
1.1 paf 797: case LS_USER:
1.206 paf 798: case LS_NAME_SQUARE_PART: // name.[here].xxx
799: if(pc.trim_bof)
1.153 parser 800: switch(c) {
801: case '\n': case ' ': case '\t':
1.206 paf 802: begin=pc.source;
803: begin_pos=pc.pos;
1.152 parser 804: continue; // skip it
1.153 parser 805: default:
1.206 paf 806: pc.trim_bof=false;
1.152 parser 807: }
1.48 paf 808: switch(c) {
809: case '$':
1.206 paf 810: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 811: RC;
812: case '^':
1.206 paf 813: push_LS(pc, LS_METHOD_NAME);
1.48 paf 814: RC;
1.166 parser 815: case ']':
1.206 paf 816: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 817: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 818: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 819: RC;
820: }
1.160 parser 821: break;
1.166 parser 822: case '[': // $name.[co<[>de]
1.206 paf 823: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 824: lexical_brackets_nestage++;
1.161 parser 825: break;
1.112 paf 826: }
1.209 paf 827: if(pc.explicit_result && c)
828: switch(c) {
829: case '\n': case ' ': case '\t':
830: begin=pc.source;
831: begin_pos=pc.pos;
832: continue; // skip it
833: default:
834: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
835: goto break2;
836: }
1.112 paf 837: break;
838:
839: // #COMMENT
1.194 paf 840: case LS_USER_COMMENT:
1.112 paf 841: if(c=='\n') {
842: // skip comment
1.206 paf 843: begin=pc.source;
844: begin_pos=pc.pos;
1.112 paf 845:
1.206 paf 846: pop_LS(pc);
1.112 paf 847: continue;
1.1 paf 848: }
1.48 paf 849: break;
850:
851: // STRING IN EXPRESSION
1.145 parser 852: case LS_EXPRESSION_STRING_QUOTED:
853: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 854: switch(c) {
855: case '"':
1.145 parser 856: case '\'':
857: if(
1.206 paf 858: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
859: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
860: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 861: RC;
862: }
863: break;
1.48 paf 864: case '$':
1.206 paf 865: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 866: RC;
867: case '^':
1.206 paf 868: push_LS(pc, LS_METHOD_NAME);
1.48 paf 869: RC;
1.10 paf 870: }
871: break;
872:
873: // METHOD DEFINITION
874: case LS_DEF_NAME:
1.48 paf 875: switch(c) {
876: case '[':
1.206 paf 877: pc.ls=LS_DEF_PARAMS;
1.48 paf 878: RC;
879: case '\n':
1.206 paf 880: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 881: RC;
1.10 paf 882: }
883: break;
1.48 paf 884:
1.10 paf 885: case LS_DEF_PARAMS:
1.48 paf 886: switch(c) {
1.192 paf 887: case '$': // common error
1.193 paf 888: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
889: goto break2;
1.48 paf 890: case ';':
891: RC;
892: case ']':
1.206 paf 893: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 894: RC;
1.49 paf 895: case '\n': // wrong. bailing out
1.206 paf 896: pop_LS(pc);
1.48 paf 897: RC;
1.10 paf 898: }
899: break;
1.48 paf 900:
1.10 paf 901: case LS_DEF_LOCALS:
1.48 paf 902: switch(c) {
903: case '[':
904: case ';':
905: RC;
906: case ']':
1.206 paf 907: pc.ls=LS_DEF_COMMENT;
1.48 paf 908: RC;
909: case '\n': // wrong. bailing out
1.206 paf 910: pop_LS(pc);
1.48 paf 911: RC;
1.10 paf 912: }
913: break;
1.48 paf 914:
1.10 paf 915: case LS_DEF_COMMENT:
916: if(c=='\n') {
1.206 paf 917: pop_LS(pc);
1.48 paf 918: RC;
1.37 paf 919: }
920: break;
921:
1.48 paf 922: case LS_DEF_SPECIAL_BODY:
1.175 paf 923: if(c=='\n')
1.48 paf 924: RC;
925: break;
926:
927: // (EXPRESSION)
1.69 paf 928: case LS_VAR_ROUND:
929: case LS_METHOD_ROUND:
1.48 paf 930: switch(c) {
931: case ')':
932: if(--lexical_brackets_nestage==0)
1.206 paf 933: if(pc.ls==LS_METHOD_ROUND) // method round param ended
934: pc.ls=LS_METHOD_AFTER; // look for method end
935: else // pc.ls==LS_VAR_ROUND // variable constructor ended
936: pop_LS(pc); // return to normal life
1.48 paf 937: RC;
1.194 paf 938: case '#': // comment start skipping
939: if(end!=begin) {
1.206 paf 940: if(!pc.string_start)
941: pc.string_start=begin_pos;
1.194 paf 942: // append piece till #
1.206 paf 943: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 944: }
945: // fall into COMMENT lexical state [wait for \n]
1.206 paf 946: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 947: lexical_brackets_nestage=1;
948: continue;
1.48 paf 949: case '$':
1.206 paf 950: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 951: RC;
952: case '^':
1.206 paf 953: push_LS(pc, LS_METHOD_NAME);
1.48 paf 954: RC;
955: case '(':
956: lexical_brackets_nestage++;
957: RC;
1.67 paf 958: case '-':
1.206 paf 959: switch(*pc.source) {
1.127 paf 960: case 'f': // -f
1.67 paf 961: skip_analized=1;
962: result=FEXISTS;
1.127 paf 963: goto break2;
964: case 'd': // -d
965: skip_analized=1;
966: result=DEXISTS;
967: goto break2;
1.191 paf 968: default: // minus
1.67 paf 969: result=c;
1.127 paf 970: goto break2;
971: }
1.67 paf 972: goto break2;
1.173 paf 973: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 974: case '~':
1.48 paf 975: case ';':
976: RC;
1.193 paf 977: case '&': case '|':
1.206 paf 978: if(*pc.source==c) { // && ||
1.193 paf 979: result=c=='&'?LAND:LOR;
1.67 paf 980: skip_analized=1;
1.58 paf 981: } else
982: result=c;
983: goto break2;
1.193 paf 984: case '!':
1.206 paf 985: switch(pc.source[0]) {
1.193 paf 986: case '|': // !| !||
987: skip_analized=1;
1.206 paf 988: if(pc.source[1]=='|') {
1.193 paf 989: skip_analized++;
990: result=LXOR;
991: } else
992: result=NXOR;
993: goto break2;
994: case '=': // !=
995: skip_analized=1;
996: result=NNE;
997: goto break2;
998: }
999: RC;
1.195 paf 1000:
1001: case '<': // <<, <=, <
1.206 paf 1002: switch(*pc.source) {
1.195 paf 1003: case '<': // <[<]
1004: skip_analized=1; result=NSL; break;
1005: case '=': // <[=]
1006: skip_analized=1; result=NLE; break;
1007: default: // <[]
1008: result=c; break;
1009: }
1010: goto break2;
1011: case '>': // >>, >=, >
1.206 paf 1012: switch(*pc.source) {
1.195 paf 1013: case '>': // >[>]
1014: skip_analized=1; result=NSR; break;
1015: case '=': // >[=]
1016: skip_analized=1; result=NGE; break;
1017: default: // >[]
1018: result=c; break;
1019: }
1020: goto break2;
1021: case '=': // ==
1.206 paf 1022: switch(*pc.source) {
1.195 paf 1023: case '=': // =[=]
1024: skip_analized=1; result=NEQ; break;
1025: default: // =[]
1026: result=c; break; // not used now
1027: }
1.58 paf 1028: goto break2;
1.195 paf 1029:
1.48 paf 1030: case '"':
1.206 paf 1031: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1032: RC;
1033: case '\'':
1.206 paf 1034: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1035: RC;
1.50 paf 1036: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1037: if(end==begin) // right after whitespace
1.206 paf 1038: if(isspace(pc.source[1])) {
1039: switch(*pc.source) {
1.117 paf 1040: // case '?': // ok [and bad cases, yacc would bark at them]
1041: case 't': // lt gt [et nt]
1042: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1043: skip_analized=1;
1044: goto break2;
1045: case 'e': // le ge ne [ee]
1046: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1047: skip_analized=1;
1048: goto break2;
1049: case 'q': // eq [lq gq nq]
1050: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1051: skip_analized=1;
1052: goto break2;
1053: }
1.67 paf 1054: }
1055: break;
1056: case 'i':
1057: if(end==begin) // right after whitespace
1.206 paf 1058: if(isspace(pc.source[1])) {
1059: switch(pc.source[0]) {
1.117 paf 1060: case 'n': // in
1.95 paf 1061: skip_analized=1;
1062: result=IN;
1063: goto break2;
1.117 paf 1064: case 's': // is
1.95 paf 1065: skip_analized=1;
1066: result=IS;
1067: goto break2;
1068: }
1.67 paf 1069: }
1070: break;
1071: case 'd':
1072: if(end==begin) // right after whitespace
1.206 paf 1073: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.67 paf 1074: skip_analized=2;
1075: result=DEF;
1.58 paf 1076: goto break2;
1.50 paf 1077: }
1.48 paf 1078: break;
1.216 ! paf 1079: case 't':
! 1080: if(end==begin) // right after whitespace
! 1081: if(pc.source[0]=='r' && pc.source[1]=='u' && pc.source[2]=='e') { // def
! 1082: skip_analized=3;
! 1083: result=LITERAL_TRUE;
! 1084: goto break2;
! 1085: }
! 1086: break;
! 1087: case 'f':
! 1088: if(end==begin) // right after whitespace
! 1089: if(pc.source[0]=='a' && pc.source[1]=='l' && pc.source[2]=='s' && pc.source[3]=='e') { // def
! 1090: skip_analized=4;
! 1091: result=LITERAL_FALSE;
! 1092: goto break2;
! 1093: }
! 1094: break;
1.48 paf 1095: case ' ': case '\t': case '\n':
1.63 paf 1096: if(end!=begin) { // there were a string after previous operator?
1097: result=0; // return that string
1098: goto break2;
1.48 paf 1099: }
1.63 paf 1100: // that's a leading|traling space or after-operator-space
1101: // ignoring it
1102: // reset piece 'begin' position & line
1.206 paf 1103: begin=pc.source; // after whitespace char
1104: begin_pos=pc.pos;
1.48 paf 1105: continue;
1.1 paf 1106: }
1107: break;
1.194 paf 1108: case LS_EXPRESSION_COMMENT:
1109: if(c=='(')
1110: lexical_brackets_nestage++;
1111:
1.206 paf 1112: switch(*pc.source) {
1.194 paf 1113: case '\n': case ')':
1.206 paf 1114: if(*pc.source==')')
1.194 paf 1115: if(--lexical_brackets_nestage!=0)
1116: continue;
1117:
1118: // skip comment
1.206 paf 1119: begin=pc.source;
1120: begin_pos=pc.pos;
1.194 paf 1121:
1.206 paf 1122: pop_LS(pc);
1.194 paf 1123: continue;
1124: }
1125: break;
1.1 paf 1126:
1.10 paf 1127: // VARIABLE GET/PUT/WITH
1.166 parser 1128: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1129: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1130: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1131: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1132: if(
1.206 paf 1133: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1134: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1135: // name in expr ends also before
1.48 paf 1136: switch(c) {
1.181 paf 1137: // expression minus
1.92 paf 1138: case '-':
1.181 paf 1139: // expression integer division
1140: case '\\':
1.206 paf 1141: pop_LS(pc);
1142: pc.ungetc();
1.48 paf 1143: result=EON;
1144: goto break2;
1145: }
1146: }
1.166 parser 1147: if(
1.206 paf 1148: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1149: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1150: // name already has ':', stop before next
1151: switch(c) {
1152: case ':':
1.206 paf 1153: pop_LS(pc);
1154: pc.ungetc();
1.142 parser 1155: result=EON;
1156: goto break2;
1157: }
1158: }
1.48 paf 1159: switch(c) {
1160: case 0:
1161: case ' ': case '\t': case '\n':
1162: case ';':
1.126 paf 1163: case ']': case '}': case ')':
1164: case '"': case '\'':
1.139 parser 1165: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1166: case '+': case '*': case '/': case '%':
1167: case '&': case '|':
1168: case '=': case '!':
1.99 paf 1169: // common delimiters
1.190 paf 1170: case ',': case '?': case '#':
1.139 parser 1171: // before call
1172: case '^':
1.206 paf 1173: pop_LS(pc);
1174: pc.ungetc();
1.13 paf 1175: result=EON;
1.1 paf 1176: goto break2;
1.48 paf 1177: case '[':
1.162 parser 1178: // $name.<[>code]
1.206 paf 1179: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1180: end[-1]=='$'/*was start of get*/ ||
1181: end[-1]==':'/*was class name delim */ ||
1182: end[-1]=='.'/*was name delim */
1.162 parser 1183: )) {
1.206 paf 1184: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1185: lexical_brackets_nestage=1;
1186: RC;
1187: }
1.206 paf 1188: pc.ls=LS_VAR_SQUARE;
1.1 paf 1189: lexical_brackets_nestage=1;
1.48 paf 1190: RC;
1191: case '{':
1192: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1193: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1194: } else {
1.206 paf 1195: pc.ls=LS_VAR_CURLY;
1.48 paf 1196: lexical_brackets_nestage=1;
1197: }
1.69 paf 1198:
1.48 paf 1199: RC;
1200: case '(':
1.206 paf 1201: pc.ls=LS_VAR_ROUND;
1.1 paf 1202: lexical_brackets_nestage=1;
1.48 paf 1203: RC;
1204: case '.': // name part delim
1205: case '$': // name part subvar
1.160 parser 1206: case ':': // class<:>name
1.166 parser 1207: // go to _WITHOUT_COLON state variant...
1.206 paf 1208: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1209: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1210: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1211: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1212: // ...stop before next ':'
1.48 paf 1213: RC;
1.1 paf 1214: }
1215: break;
1.48 paf 1216:
1.1 paf 1217: case LS_VAR_NAME_CURLY:
1.48 paf 1218: switch(c) {
1.162 parser 1219: case '[':
1.166 parser 1220: // ${name.<[>code]}
1.206 paf 1221: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1222: lexical_brackets_nestage=1;
1223: RC;
1.48 paf 1224: case '}': // ${name} finished, restoring LS
1.206 paf 1225: pop_LS(pc);
1.48 paf 1226: RC;
1227: case '.': // name part delim
1228: case '$': // name part subvar
1229: case ':': // ':name' or 'class:name'
1230: RC;
1.1 paf 1231: }
1232: break;
1.48 paf 1233:
1234: case LS_VAR_SQUARE:
1235: switch(c) {
1236: case '$':
1.206 paf 1237: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1238: RC;
1239: case '^':
1.206 paf 1240: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1241: RC;
1242: case ']':
1.1 paf 1243: if(--lexical_brackets_nestage==0) {
1.206 paf 1244: pop_LS(pc);
1.48 paf 1245: RC;
1.1 paf 1246: }
1.48 paf 1247: break;
1248: case ';': // operator_or_fmt;value delim
1249: RC;
1250: case '[':
1251: lexical_brackets_nestage++;
1252: break;
1.1 paf 1253: }
1254: break;
1.48 paf 1255:
1.1 paf 1256: case LS_VAR_CURLY:
1.48 paf 1257: switch(c) {
1258: case '$':
1.206 paf 1259: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1260: RC;
1261: case '^':
1.206 paf 1262: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1263: RC;
1264: case '}':
1.1 paf 1265: if(--lexical_brackets_nestage==0) {
1.206 paf 1266: pop_LS(pc);
1.48 paf 1267: RC;
1.1 paf 1268: }
1.48 paf 1269: break;
1270: case '{':
1.1 paf 1271: lexical_brackets_nestage++;
1.48 paf 1272: break;
1273: }
1.1 paf 1274: break;
1275:
1.10 paf 1276: // METHOD CALL
1.1 paf 1277: case LS_METHOD_NAME:
1.48 paf 1278: switch(c) {
1279: case '[':
1.166 parser 1280: // ^name.<[>code].xxx
1.206 paf 1281: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1282: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1283: end[-1]==':'/*was class name delim */ ||
1284: end[-1]=='.'/*was name delim */
1.162 parser 1285: )) {
1.206 paf 1286: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1287: lexical_brackets_nestage=1;
1288: RC;
1289: }
1.206 paf 1290: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1291: lexical_brackets_nestage=1;
1.48 paf 1292: RC;
1293: case '{':
1.206 paf 1294: pc.ls=LS_METHOD_CURLY;
1.1 paf 1295: lexical_brackets_nestage=1;
1.48 paf 1296: RC;
1.69 paf 1297: case '(':
1.206 paf 1298: pc.ls=LS_METHOD_ROUND;
1.69 paf 1299: lexical_brackets_nestage=1;
1300: RC;
1.48 paf 1301: case '.': // name part delim
1302: case '$': // name part subvar
1303: case ':': // ':name' or 'class:name'
1.170 parser 1304: case '^': // ^abc^xxx wrong. bailing out
1305: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1306: case ' ': // ^if ( wrong. bailing out
1.48 paf 1307: RC;
1.1 paf 1308: }
1309: break;
1.48 paf 1310:
1311: case LS_METHOD_SQUARE:
1312: switch(c) {
1313: case '$':
1.206 paf 1314: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1315: RC;
1316: case '^':
1.206 paf 1317: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1318: RC;
1319: case ';': // param delim
1320: RC;
1321: case ']':
1.1 paf 1322: if(--lexical_brackets_nestage==0) {
1.206 paf 1323: pc.ls=LS_METHOD_AFTER;
1.48 paf 1324: RC;
1.1 paf 1325: }
1.48 paf 1326: break;
1327: case '[':
1.1 paf 1328: lexical_brackets_nestage++;
1.48 paf 1329: break;
1330: }
1.1 paf 1331: break;
1.48 paf 1332:
1.1 paf 1333: case LS_METHOD_CURLY:
1.48 paf 1334: switch(c) {
1335: case '$':
1.206 paf 1336: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1337: RC;
1338: case '^':
1.206 paf 1339: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1340: RC;
1341: case ';': // param delim
1.48 paf 1342: RC;
1343: case '}':
1.1 paf 1344: if(--lexical_brackets_nestage==0) {
1.206 paf 1345: pc.ls=LS_METHOD_AFTER;
1.48 paf 1346: RC;
1.1 paf 1347: }
1.48 paf 1348: break;
1349: case '{':
1.1 paf 1350: lexical_brackets_nestage++;
1.48 paf 1351: break;
1352: }
1.209 paf 1353: if(pc.explicit_result && c)
1354: switch(c) {
1355: case '\n': case ' ': case '\t':
1356: begin=pc.source;
1357: begin_pos=pc.pos;
1358: continue; // skip it
1359: default:
1360: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
1361: goto break2;
1362: }
1.1 paf 1363: break;
1.48 paf 1364:
1.1 paf 1365: case LS_METHOD_AFTER:
1.69 paf 1366: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1367: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1368: lexical_brackets_nestage=1;
1.48 paf 1369: RC;
1.1 paf 1370: }
1.69 paf 1371: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1372: pc.ls=LS_METHOD_CURLY;
1.69 paf 1373: lexical_brackets_nestage=1;
1374: RC;
1375: }
1376: if(c=='(') {/* ]( }( )( */
1.206 paf 1377: pc.ls=LS_METHOD_ROUND;
1.1 paf 1378: lexical_brackets_nestage=1;
1.48 paf 1379: RC;
1.1 paf 1380: }
1.206 paf 1381: pop_LS(pc);
1382: pc.ungetc();
1.13 paf 1383: result=EON;
1.1 paf 1384: goto break2;
1385: }
1.9 paf 1386: if(c==0) {
1.1 paf 1387: result=-1;
1388: break;
1389: }
1390: }
1391:
1392: break2:
1.59 paf 1393: if(end!=begin) { // there is last piece?
1394: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1395: // strip last \n
1.10 paf 1396: end--;
1.137 parser 1397: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1398: end--;
1.59 paf 1399: }
1.206 paf 1400: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1401: if(!pc.string_start)
1402: pc.string_start=begin_pos;
1.59 paf 1403: // append it
1.206 paf 1404: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1405: }
1.59 paf 1406: }
1.206 paf 1407: if(!pc.string.is_empty()) { // something accumulated?
1408: // create STRING value: array of OP_VALUE+origin+vstring
1409: *lvalp=VL(
1410: new VString(*new String(pc.string, String::L_CLEAN)),
1411: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1412: // new pieces storage
1.206 paf 1413: pc.string.clear();
1414: pc.string_start.clear();
1.58 paf 1415: // make current result be pending for next call, return STRING for now
1.206 paf 1416: pc.pending_state=result; result=STRING;
1.58 paf 1417: }
1.67 paf 1418: if(skip_analized) {
1.206 paf 1419: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1420: }
1.58 paf 1421: return result;
1.1 paf 1422: }
1423:
1.206 paf 1424: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1425: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1426: return 1;
1.110 paf 1427: }
1.1 paf 1428:
1.110 paf 1429: static void yyprint(FILE *file, int type, YYSTYPE value) {
1430: if(type==STRING)
1.206 paf 1431: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1432: }
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