Annotation of parser3/src/main/compile.y, revision 1.207
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:
1.207 ! paf 8: $Id: compile.y,v 1.206 2003/07/24 11:31:23 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:
51:
1.8 paf 52: // local convinient inplace typecast & var
1.205 paf 53: #undef PC
1.206 paf 54: #define PC (*(Parse_control *)pc)
55: #undef POOL
1.114 paf 56: #define POOL (*PC.pool)
1.107 paf 57: #ifndef DOXYGEN
1.1 paf 58: %}
59:
60: %pure_parser
61:
1.13 paf 62: %token EON
1.4 paf 63: %token STRING
1.1 paf 64: %token BOGUS
1.55 paf 65:
1.58 paf 66: %token BAD_STRING_COMPARISON_OPERATOR
1.114 paf 67: %token BAD_HEX_LITERAL
1.171 parser 68: %token BAD_METHOD_DECL_START
1.193 paf 69: %token BAD_METHOD_PARAMETER_NAME_CHARACTER
70: %token BAD_MATH_OPERATOR_CHARACTER
1.58 paf 71:
1.59 paf 72: %token LAND "&&"
1.58 paf 73: %token LOR "||"
1.193 paf 74: %token LXOR "!||"
75: %token NXOR "!|"
1.58 paf 76:
77: %token NLE "<="
78: %token NGE ">="
79: %token NEQ "=="
80: %token NNE "!="
1.195 paf 81: %token NSL "<<"
82: %token NSR ">>"
1.58 paf 83:
84: %token SLT "lt"
85: %token SGT "gt"
86: %token SLE "le"
87: %token SGE "ge"
88: %token SEQ "eq"
89: %token SNE "ne"
90:
1.67 paf 91: %token DEF "def"
92: %token IN "in"
93: %token FEXISTS "-f"
1.127 paf 94: %token DEXISTS "-d"
1.95 paf 95: %token IS "is"
1.67 paf 96:
1.57 paf 97: /* logical */
1.193 paf 98: %left "!||"
1.57 paf 99: %left "||"
100: %left "&&"
1.131 paf 101: %left '<' '>' "<=" ">=" "lt" "gt" "le" "ge"
102: %left "==" "!=" "eq" "ne"
103: %left "is" "def" "in" "-f" "-d"
1.57 paf 104:
105: /* bitwise */
1.193 paf 106: %left "!|"
1.131 paf 107: %left '|'
108: %left '&'
1.202 paf 109: %left "<<" ">>"
1.57 paf 110:
1.56 paf 111: /* numerical */
1.202 paf 112: %left '+' '-'
113: %left '*' '/' '\\' '%'
114: %left NUNARY /* unary - + */
115:
116: /* out-of-group */
117: %left '~' /* bitwise */
118: %left '!' /* logical */
1.1 paf 119:
120: %%
1.195 paf 121: all:
1.10 paf 122: one_big_piece {
1.206 paf 123: Method& method=*new Method(Method::CT_ANY,
1.81 paf 124: 0, 0, /*min, max numbered_params_count*/
1.75 paf 125: 0/*param_names*/, 0/*local_names*/,
126: $1/*parser_code*/, 0/*native_code*/);
1.206 paf 127: PC.cclass->add_method(PC.alias_method(main_method_name), method);
1.10 paf 128: }
129: | methods;
130:
131: methods: method | methods method;
132: one_big_piece: maybe_codes;
133:
1.34 paf 134: method: control_method | code_method;
135:
136: control_method: '@' STRING '\n'
1.132 paf 137: maybe_control_strings {
1.206 paf 138: const String& command=*LA2S(*$2);
1.34 paf 139: YYSTYPE strings_code=$4;
1.206 paf 140: if(strings_code->count()<1*OPERATIONS_PER_OPVALUE) {
1.114 paf 141: strcpy(PC.error, "@");
142: strcat(PC.error, command.cstr());
143: strcat(PC.error, " is empty");
1.37 paf 144: YYERROR;
145: }
1.74 paf 146: if(command==CLASS_NAME) {
1.188 paf 147: if(PC.cclass->base_class()) { // already changed from default?
1.114 paf 148: strcpy(PC.error, "class already have a name '");
149: strncat(PC.error, PC.cclass->name().cstr(), 100);
150: strcat(PC.error, "'");
1.73 paf 151: YYERROR;
152: }
1.206 paf 153: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.73 paf 154: // new class' name
1.206 paf 155: const String& name=*LA2S(*strings_code);
1.73 paf 156: // creating the class
1.206 paf 157: VStateless_class* cclass=new VClass;
158: PC.cclass=cclass;
159: PC.cclass->set_name(name);
1.73 paf 160: // append to request's classes
1.206 paf 161: PC.request.classes().put(name, cclass);
1.73 paf 162: } else {
1.206 paf 163: strcpy(PC.error, "@"CLASS_NAME" must contain only one line with class name (contains more then one)");
1.34 paf 164: YYERROR;
165: }
1.130 paf 166: } else if(command==USE_CONTROL_METHOD_NAME) {
1.206 paf 167: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE)
168: PC.request.use_file(PC.request.main_class, *LA2S(*strings_code, i));
1.130 paf 169: } else if(command==BASE_NAME) {
1.188 paf 170: if(PC.cclass->base_class()) { // already changed from default?
1.130 paf 171: strcpy(PC.error, "class already have a base '");
1.188 paf 172: strncat(PC.error, PC.cclass->base_class()->name().cstr(), 100);
1.130 paf 173: strcat(PC.error, "'");
174: YYERROR;
175: }
1.206 paf 176: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
177: const String& base_name=*LA2S(*strings_code);
178: if(Value* base_class_value=PC.request.classes().get(base_name)) {
179: // @CLASS == @BASE sanity check
180: if(VStateless_class *base_class=base_class_value->get_class()) {
181: if(PC.cclass==base_class) {
182: strcpy(PC.error, "@"CLASS_NAME" equals @"BASE_NAME);
183: YYERROR;
184: }
185: PC.cclass->get_class()->set_base(base_class);
186: } else { // they asked to derive from a class without methods ['env' & co]
187: strcpy(PC.error, base_name.cstr());
188: strcat(PC.error, ": you can not derive from this class in @"BASE_NAME);
189: YYERROR;
190: }
191: } else {
1.130 paf 192: strcpy(PC.error, base_name.cstr());
193: strcat(PC.error, ": undefined class in @"BASE_NAME);
1.73 paf 194: YYERROR;
195: }
1.34 paf 196: } else {
1.130 paf 197: strcpy(PC.error, "@"BASE_NAME" must contain sole name");
1.34 paf 198: YYERROR;
199: }
1.130 paf 200: } else {
201: strcpy(PC.error, "'");
202: strncat(PC.error, command.cstr(), MAX_STRING/2);
203: strcat(PC.error, "' invalid special name. valid names are "
204: "'"CLASS_NAME"', '"USE_CONTROL_METHOD_NAME"' and '"BASE_NAME"'");
205: YYERROR;
1.34 paf 206: }
207: };
1.132 paf 208: maybe_control_strings: empty | control_strings;
1.206 paf 209: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2) };
1.37 paf 210: control_string: maybe_string '\n';
211: maybe_string: empty | STRING;
1.34 paf 212:
213: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n'
1.10 paf 214: maybe_codes {
1.206 paf 215: const String& name=*LA2S(*$2);
1.10 paf 216:
217: YYSTYPE params_names_code=$3;
1.206 paf 218: ArrayString* params_names=0;
219: if(int size=params_names_code->count()) {
220: params_names=new ArrayString;
221: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
222: *params_names+=LA2S(*params_names_code, i);
1.75 paf 223: }
1.10 paf 224:
225: YYSTYPE locals_names_code=$4;
1.206 paf 226: ArrayString* locals_names=0;
227: if(int size=locals_names_code->count()) {
228: locals_names=new ArrayString;
229: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
230: *locals_names+=LA2S(*locals_names_code, i);
1.75 paf 231: }
1.10 paf 232:
1.206 paf 233: Method& method=*new Method(
234: //name,
1.122 paf 235: Method::CT_ANY,
1.81 paf 236: 0, 0/*min,max numbered_params_count*/,
1.76 paf 237: params_names, locals_names,
238: $7, 0);
1.206 paf 239: PC.cclass->add_method(PC.alias_method(name), method);
1.8 paf 240: };
1.10 paf 241:
242: maybe_bracketed_strings: empty | bracketed_maybe_strings;
243: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
244: maybe_strings: empty | strings;
1.206 paf 245: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3) };
1.10 paf 246:
247: maybe_comment: empty | STRING;
1.1 paf 248:
249: /* codes */
250:
1.10 paf 251: maybe_codes: empty | codes;
252:
1.206 paf 253: codes: code | codes code { $$=$1; P(*$$, *$2) };
1.81 paf 254: code: write_string | action;
1.149 parser 255: action: get | put | call;
1.1 paf 256:
257: /* get */
258:
1.64 paf 259: get: get_value {
1.184 paf 260: $$=$1; /* stack: resulting value */
1.206 paf 261: changetail_or_append(*$$,
1.186 paf 262: OP_GET_ELEMENT, false, /*->*/OP_GET_ELEMENT__WRITE,
263: /*or */OP_WRITE_VALUE
1.184 paf 264: ); /* value=pop; wcontext.write(value) */
1.1 paf 265: };
1.163 parser 266: get_value: '$' get_name_value { $$=$2 };
1.64 paf 267: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 268: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 269: name_without_curly_rdive:
270: name_without_curly_rdive_read
271: | name_without_curly_rdive_class;
1.19 paf 272: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 273: $$=N();
274: ArrayOperation* diving_code=$1;
275: const String* first_name=LA2S(*diving_code);
1.179 paf 276: // self.xxx... -> xxx...
1.206 paf 277: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 278: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.206 paf 279: O(*yyval, OP_WITH_SELF); /* stack: starting context */
280: P(*yyval, *diving_code,
1.22 paf 281: /* skip over... */
1.206 paf 282: diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.22 paf 283: } else {
1.206 paf 284: O(*yyval, OP_WITH_READ); /* stack: starting context */
1.179 paf 285:
1.201 paf 286: // ^if ELEMENT -> ^if ELEMENT_OR_OPERATOR
1.206 paf 287: // OP_VALUE+origin+string+OP_GET_ELEMENT. -> OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
288: if(PC.in_call_value && diving_code->count()==4)
289: diving_code->put(4-1, OP_GET_ELEMENT_OR_OPERATOR);
290: P(*$$, *diving_code);
1.22 paf 291: }
292: /* diving code; stack: current context */
1.1 paf 293: };
1.206 paf 294: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2) };
295: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2) };
1.1 paf 296:
297: /* put */
298:
1.81 paf 299: put: '$' name_expr_wdive construct {
1.20 paf 300: $$=$2; /* stack: context,name */
1.206 paf 301: P(*$$, *$3); /* stack: context,name,constructor_value */
1.20 paf 302: };
1.44 paf 303: name_expr_wdive:
1.157 parser 304: name_expr_wdive_root
305: | name_expr_wdive_write
1.44 paf 306: | name_expr_wdive_class;
1.157 parser 307: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 308: $$=N();
309: ArrayOperation* diving_code=$1;
310: const String* first_name=LA2S(*diving_code);
1.179 paf 311: // $self.xxx... -> $xxx...
1.206 paf 312: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 313: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.206 paf 314: O(*$$, OP_WITH_SELF); /* stack: starting context */
315: P(*$$, *diving_code,
1.23 paf 316: /* skip over... */
1.206 paf 317: diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.23 paf 318: } else {
1.206 paf 319: O(*$$, OP_WITH_ROOT); /* stack: starting context */
320: P(*$$, *diving_code);
1.23 paf 321: }
322: /* diving code; stack: current context */
1.156 parser 323: };
1.157 parser 324: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 325: $$=N();
326: O(*$$, OP_WITH_WRITE); /* stack: starting context */
327: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 328: };
1.206 paf 329: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2) };
1.20 paf 330:
1.149 parser 331: construct:
1.163 parser 332: construct_square
333: | construct_round
334: | construct_curly
1.149 parser 335: ;
336: construct_square: '[' any_constructor_code_value ']' {
337: // stack: context, name
338: $$=$2; // stack: context, name, value
1.206 paf 339: O(*$$, OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 340: }
341: ;
1.149 parser 342: construct_round: '(' expr_value ')' {
1.206 paf 343: $$=N();
344: O(*$$, OP_PREPARE_TO_EXPRESSION);
1.149 parser 345: // stack: context, name
1.206 paf 346: P(*$$, *$2); // stack: context, name, value
347: O(*$$, OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 348: }
1.52 paf 349: ;
1.149 parser 350: construct_curly: '{' maybe_codes '}' {
351: // stack: context, name
1.206 paf 352: $$=N();
353: OA(*$$, OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 354: };
355:
1.55 paf 356: any_constructor_code_value:
1.157 parser 357: void_value /* optimized $var[] case */
1.52 paf 358: | STRING /* optimized $var[STRING] case */
1.55 paf 359: | constructor_code_value /* $var[something complex] */
1.1 paf 360: ;
1.55 paf 361: constructor_code_value: constructor_code {
1.206 paf 362: $$=N();
363: OA(*$$, OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 364: /* some code that writes to that context */
365: /* context=pop; stack: context.value() */
1.1 paf 366: };
1.55 paf 367: constructor_code: codes__excluding_sole_str_literal;
1.206 paf 368: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 369:
1.1 paf 370: /* call */
371:
1.66 paf 372: call: call_value {
373: $$=$1; /* stack: value */
1.206 paf 374: changetail_or_append(*$$,
1.186 paf 375: OP_CALL, true, /*->*/ OP_CALL__WRITE,
376: /*or */OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.66 paf 377: };
1.177 paf 378: call_value: '^' {
1.180 paf 379: PC.in_call_value=true;
1.177 paf 380: }
381: call_name {
1.180 paf 382: PC.in_call_value=false;
1.177 paf 383: }
1.154 parser 384: store_params EON { /* ^field.$method{vasya} */
385: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 386:
1.154 parser 387: YYSTYPE params_code=$5;
1.206 paf 388: if(params_code->count()==4) { // probably [] case. [OP_VALUE+origin+Void+STORE_PARAM]
389: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.140 parser 390: if(!value->is_defined()) // value is VVoid?
1.123 paf 391: params_code=0; // ^zzz[] case. don't append lone empty param.
1.186 paf 392: }
393: /* stack: context, method_junction */
1.206 paf 394: OA(*$$, OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
1.1 paf 395: };
396:
1.43 paf 397: call_name: name_without_curly_rdive;
1.38 paf 398:
1.206 paf 399: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2) };
1.69 paf 400: store_param:
401: store_square_param
402: | store_round_param
403: | store_curly_param
1.31 paf 404: ;
1.123 paf 405: store_square_param: '[' store_code_param_parts ']' {$$=$2};
1.69 paf 406: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 407: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 408: store_code_param_parts:
409: store_code_param_part
1.206 paf 410: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 411: ;
412: store_expr_param_parts:
413: store_expr_param_part
1.206 paf 414: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 415: ;
1.94 paf 416: store_curly_param_parts:
417: store_curly_param_part
1.206 paf 418: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3) }
1.94 paf 419: ;
1.120 paf 420: store_code_param_part: code_param_value {
1.32 paf 421: $$=$1;
1.206 paf 422: O(*$$, OP_STORE_PARAM);
1.120 paf 423: };
1.69 paf 424: store_expr_param_part: write_expr_value {
1.206 paf 425: $$=N();
426: OA(*$$, OP_EXPR_CODE__STORE_PARAM, $1);
1.69 paf 427: };
1.94 paf 428: store_curly_param_part: maybe_codes {
1.206 paf 429: $$=N();
430: OA(*$$, OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 431: };
1.120 paf 432: code_param_value:
1.157 parser 433: void_value /* optimized [;...] case */
1.120 paf 434: | STRING /* optimized [STRING] case */
435: | constructor_code_value /* [something complex] */
436: ;
1.90 paf 437: write_expr_value: expr_value {
1.206 paf 438: $$=N();
439: O(*$$, OP_PREPARE_TO_EXPRESSION);
440: P(*$$, *$1);
441: O(*$$, OP_WRITE_EXPR_RESULT);
1.69 paf 442: };
1.1 paf 443:
444: /* name */
445:
1.206 paf 446: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 447:
1.206 paf 448: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 449: name_step: name_advance1 '.';
450: name_advance1: name_expr_value {
1.177 paf 451: // we know that name_advance1 not called from ^xxx context
452: // so we'll not check for operator call possibility as we do in name_advance2
453:
1.1 paf 454: /* stack: context */
455: $$=$1; /* stack: context,name */
1.206 paf 456: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 457: };
458: name_advance2: name_expr_value {
459: /* stack: context */
460: $$=$1; /* stack: context,name */
1.206 paf 461: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 462: }
1.4 paf 463: | STRING BOGUS
1.1 paf 464: ;
465: name_expr_value:
1.4 paf 466: STRING /* subname_is_const */
1.1 paf 467: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 468: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 469: | name_square_code_value /* [codes] */
1.1 paf 470: ;
471: name_expr_subvar_value: '$' subvar_ref_name_rdive {
472: $$=$2;
1.206 paf 473: O(*$$, OP_GET_ELEMENT);
1.1 paf 474: };
1.4 paf 475: name_expr_with_subvar_value: STRING subvar_get_writes {
1.206 paf 476: ArrayOperation* code;
1.183 paf 477: {
1.206 paf 478: change_string_literal_to_write_string_literal(*(code=$1));
479: P(*code, *$2);
1.183 paf 480: }
1.206 paf 481: $$=N();
482: OA(*$$, OP_STRING_POOL, code);
1.1 paf 483: };
1.166 parser 484: name_square_code_value: '[' codes ']' {
1.206 paf 485: $$=N();
486: OA(*$$, OP_OBJECT_POOL, $2); /* stack: empty write context */
1.183 paf 487: /* some code that writes to that context */
488: /* context=pop; stack: context.value() */
1.160 parser 489: };
1.154 parser 490: subvar_ref_name_rdive: STRING {
1.206 paf 491: $$=N();
492: O(*$$, OP_WITH_READ);
493: P(*$$, *$1);
1.1 paf 494: };
1.206 paf 495: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 496: subvar__get_write: '$' subvar_ref_name_rdive {
497: $$=$2;
1.206 paf 498: O(*$$, OP_GET_ELEMENT__WRITE);
1.42 paf 499: };
500:
1.154 parser 501: class_prefix:
502: class_static_prefix
503: | class_constructor_prefix
504: ;
1.155 parser 505: class_static_prefix: STRING ':' {
506: $$=$1; // stack: class name string
1.206 paf 507: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
508: if(VStateless_class* base=PC.cclass->base_class()) {
509: change_string_literal_value(*$$, base->name());
1.189 paf 510: } else {
511: strcpy(PC.error, "no base class declared");
512: YYERROR;
513: }
514: }
1.206 paf 515: O(*$$, OP_GET_CLASS);
1.155 parser 516: };
517: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 518: $$=$1;
1.180 paf 519: if(!PC.in_call_value) {
1.154 parser 520: strcpy(PC.error, ":: not allowed here");
521: YYERROR;
522: }
1.206 paf 523: O(*$$, OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 524: };
525:
1.53 paf 526:
1.56 paf 527: /* expr */
1.53 paf 528:
1.81 paf 529: expr_value: expr {
1.182 paf 530: // see OP_PREPARE_TO_EXPRESSION!!
1.206 paf 531: if(($$=$1)->count()==2) // only one string literal in there?
532: change_string_literal_to_double_literal(*$$); // make that string literal Double
1.62 paf 533: };
1.56 paf 534: expr:
1.62 paf 535: STRING
1.64 paf 536: | get_value
1.66 paf 537: | call_value
1.64 paf 538: | '"' string_inside_quotes_value '"' { $$ = $2; }
1.145 parser 539: | '\'' string_inside_quotes_value '\'' { $$ = $2; }
1.60 paf 540: | '(' expr ')' { $$ = $2; }
541: /* stack: operand // stack: @operand */
1.206 paf 542: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP_NEG) }
1.202 paf 543: | '+' expr %prec NUNARY { $$=$2 }
1.206 paf 544: | '~' expr { $$=$2; O(*$$, OP_INV) }
545: | '!' expr { $$=$2; O(*$$, OP_NOT) }
546: | "def" expr { $$=$2; O(*$$, OP_DEF) }
547: | "in" expr { $$=$2; O(*$$, OP_IN) }
548: | "-f" expr { $$=$2; O(*$$, OP_FEXISTS) }
549: | "-d" expr { $$=$2; O(*$$, OP_DEXISTS) }
1.60 paf 550: /* stack: a,b // stack: a@b */
1.206 paf 551: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP_SUB) }
552: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP_ADD) }
553: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MUL) }
554: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP_DIV) }
555: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MOD) }
556: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP_INTDIV) }
557: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SL) }
558: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SR) }
559: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_AND) }
560: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_OR) }
561: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_XOR) }
562: | expr "&&" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_AND) }
563: | expr "||" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_OR) }
564: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP_LOG_XOR) }
565: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LT) }
566: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GT) }
567: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LE) }
568: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GE) }
569: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_EQ) }
570: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_NE) }
571: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LT) }
572: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GT) }
573: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LE) }
574: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GE) }
575: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_EQ) }
576: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_NE) }
577: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP_IS) }
1.56 paf 578: ;
1.55 paf 579:
1.65 paf 580: string_inside_quotes_value: maybe_codes {
1.206 paf 581: $$=N();
582: OA(*$$, OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 583: /* some code that writes to that context */
584: /* context=pop; stack: context.get_string() */
1.53 paf 585: };
1.1 paf 586:
1.27 paf 587: /* basics */
1.1 paf 588:
1.81 paf 589: write_string: STRING {
1.102 paf 590: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
1.206 paf 591: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 592: };
593:
1.206 paf 594: void_value: /* empty */ { $$=VL(new VVoid(), 0, 0, 0) };
595: empty: /* empty */ { $$=N() };
1.1 paf 596:
597: %%
1.105 paf 598: #endif
1.1 paf 599:
600: /*
601: 000$111(2222)00
602: 000$111{3333}00
1.9 paf 603: $,^: push,=0
1.1 paf 604: 1:( { break=pop
605: 2:( ) pop
606: 3:{ } pop
607:
608: 000^111(2222)4444{33333}4000
1.9 paf 609: $,^: push,=0
1.1 paf 610: 1:( { break=pop
611: 2:( )=4
612: 3:{ }=4
613: 4:[^({]=pop
614: */
615:
1.206 paf 616: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
617: pc.source--;
618: if(pc.pos.col==0) {
619: --pc.pos.line; pc.pos.col=last_line_end_col;
620: } else
621: --pc.pos.col;
622:
623: }
624: static int yylex(YYSTYPE *lvalp, void *apc) {
625: register Parse_control& pc=*static_cast<Parse_control*>(apc);
626:
627: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 628: #define RC {result=c; goto break2; }
1.1 paf 629:
1.206 paf 630: register int c;
631: int result;
1.1 paf 632:
1.206 paf 633: if(pc.pending_state) {
634: result=pc.pending_state;
635: pc.pending_state=0;
1.1 paf 636: return result;
637: }
638:
1.206 paf 639: const char *begin=pc.source;
640: Pos begin_pos=pc.pos;
1.91 paf 641: const char *end;
1.67 paf 642: int skip_analized=0;
1.50 paf 643: while(true) {
1.206 paf 644: c=*(end=(pc.source++));
645: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 646:
1.4 paf 647: if(c=='\n') {
1.206 paf 648: pc.pos_next_line();
1.10 paf 649: } else
1.206 paf 650: pc.pos_next_c(c);
1.73 paf 651:
1.206 paf 652: if(c=='@' && pc.pos.col==0+1) {
653: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 654: // @SPECIAL
655: // ...
656: // @<here =
1.206 paf 657: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 658: } // continuing checks
1.206 paf 659: if(pc.ls==LS_USER) {
660: push_LS(pc, LS_DEF_NAME);
1.171 parser 661: RC;
1.175 paf 662: } else // @ in first column inside some code [when could that be?]
1.171 parser 663: result=BAD_METHOD_DECL_START;
664: goto break2;
1.203 paf 665: } else if(c=='^') {
1.206 paf 666: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 667: // handle after-method situation
1.206 paf 668: pop_LS(pc);
1.203 paf 669: result=EON;
670: skip_analized=-1; // return to punctuation afterwards to assure it's literality
671: goto break2;
672: }
1.206 paf 673: switch(pc.ls) {
1.169 parser 674: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
675: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
676: case LS_VAR_NAME_SIMPLE_WITH_COLON:
677: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
678: case LS_VAR_NAME_CURLY:
679: case LS_METHOD_NAME:
1.194 paf 680: case LS_USER_COMMENT:
1.169 parser 681: case LS_DEF_COMMENT:
682: // no literals in names, please
683: break;
684: default:
1.206 paf 685: switch(*pc.source) {
1.165 parser 686: // ^escaping some punctuators
1.48 paf 687: case '^': case '$': case ';':
1.126 paf 688: case '(': case ')':
1.48 paf 689: case '[': case ']':
690: case '{': case '}':
1.172 parser 691: case '"': case ':':
1.40 paf 692: if(end!=begin) {
1.206 paf 693: if(!pc.string_start)
694: pc.string_start=begin_pos;
1.40 paf 695: // append piece till ^
1.206 paf 696: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 697: }
1.63 paf 698: // reset piece 'begin' position & line
1.206 paf 699: begin=pc.source; // ->punctuation
700: begin_pos=pc.pos;
1.203 paf 701: // skip over _ after ^
1.206 paf 702: pc.source++; pc.pos.col++;
1.203 paf 703: // skip analysis = forced literal
704: continue;
1.114 paf 705:
706: // converting ^#HH into char(hex(HH))
707: case '#':
708: if(end!=begin) {
1.206 paf 709: if(!pc.string_start)
710: pc.string_start=begin_pos;
1.114 paf 711: // append piece till ^
1.206 paf 712: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 713: }
714: // #HH ?
1.206 paf 715: if(pc.source[0]=='#' && pc.source[1] && pc.source[2]) {
716: char c=
717: hex_value[(unsigned char)pc.source[1]]*0x10+
718: hex_value[(unsigned char)pc.source[2]];
719: if(c==0) {
1.114 paf 720: result=BAD_HEX_LITERAL;
721: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
722: }
723: // append char(hex(HH))
1.206 paf 724: pc.string.append(c);
1.114 paf 725: // skip over ^#HH
1.206 paf 726: pc.source+=3;
727: pc.pos.col+=3;
1.114 paf 728: // reset piece 'begin' position & line
1.206 paf 729: begin=pc.source; // ->after ^#HH
730: begin_pos=pc.pos;
1.203 paf 731: // skip analysis = forced literal
1.114 paf 732: continue;
733: }
734: break;
1.1 paf 735: }
1.169 parser 736: break;
1.203 paf 737: }
1.169 parser 738: }
1.113 paf 739: // #comment start skipping
1.206 paf 740: if(c=='#' && pc.pos.col==1) {
1.112 paf 741: if(end!=begin) {
1.206 paf 742: if(!pc.string_start)
743: pc.string_start=begin_pos;
1.112 paf 744: // append piece till #
1.206 paf 745: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 746: }
747: // fall into COMMENT lexical state [wait for \n]
1.206 paf 748: push_LS(pc, LS_USER_COMMENT);
1.175 paf 749: continue;
1.112 paf 750: }
1.206 paf 751: switch(pc.ls) {
1.10 paf 752:
753: // USER'S = NOT OURS
1.1 paf 754: case LS_USER:
1.206 paf 755: case LS_NAME_SQUARE_PART: // name.[here].xxx
756: if(pc.trim_bof)
1.153 parser 757: switch(c) {
758: case '\n': case ' ': case '\t':
1.206 paf 759: begin=pc.source;
760: begin_pos=pc.pos;
1.152 parser 761: continue; // skip it
1.153 parser 762: default:
1.206 paf 763: pc.trim_bof=false;
1.152 parser 764: }
1.48 paf 765: switch(c) {
766: case '$':
1.206 paf 767: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 768: RC;
769: case '^':
1.206 paf 770: push_LS(pc, LS_METHOD_NAME);
1.48 paf 771: RC;
1.166 parser 772: case ']':
1.206 paf 773: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 774: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 775: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 776: RC;
777: }
1.160 parser 778: break;
1.166 parser 779: case '[': // $name.[co<[>de]
1.206 paf 780: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 781: lexical_brackets_nestage++;
1.161 parser 782: break;
1.112 paf 783: }
784: break;
785:
786: // #COMMENT
1.194 paf 787: case LS_USER_COMMENT:
1.112 paf 788: if(c=='\n') {
789: // skip comment
1.206 paf 790: begin=pc.source;
791: begin_pos=pc.pos;
1.112 paf 792:
1.206 paf 793: pop_LS(pc);
1.112 paf 794: continue;
1.1 paf 795: }
1.48 paf 796: break;
797:
798: // STRING IN EXPRESSION
1.145 parser 799: case LS_EXPRESSION_STRING_QUOTED:
800: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 801: switch(c) {
802: case '"':
1.145 parser 803: case '\'':
804: if(
1.206 paf 805: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
806: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
807: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 808: RC;
809: }
810: break;
1.48 paf 811: case '$':
1.206 paf 812: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 813: RC;
814: case '^':
1.206 paf 815: push_LS(pc, LS_METHOD_NAME);
1.48 paf 816: RC;
1.10 paf 817: }
818: break;
819:
820: // METHOD DEFINITION
821: case LS_DEF_NAME:
1.48 paf 822: switch(c) {
823: case '[':
1.206 paf 824: pc.ls=LS_DEF_PARAMS;
1.48 paf 825: RC;
826: case '\n':
1.206 paf 827: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 828: RC;
1.10 paf 829: }
830: break;
1.48 paf 831:
1.10 paf 832: case LS_DEF_PARAMS:
1.48 paf 833: switch(c) {
1.192 paf 834: case '$': // common error
1.193 paf 835: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
836: goto break2;
1.48 paf 837: case ';':
838: RC;
839: case ']':
1.206 paf 840: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 841: RC;
1.49 paf 842: case '\n': // wrong. bailing out
1.206 paf 843: pop_LS(pc);
1.48 paf 844: RC;
1.10 paf 845: }
846: break;
1.48 paf 847:
1.10 paf 848: case LS_DEF_LOCALS:
1.48 paf 849: switch(c) {
850: case '[':
851: case ';':
852: RC;
853: case ']':
1.206 paf 854: pc.ls=LS_DEF_COMMENT;
1.48 paf 855: RC;
856: case '\n': // wrong. bailing out
1.206 paf 857: pop_LS(pc);
1.48 paf 858: RC;
1.10 paf 859: }
860: break;
1.48 paf 861:
1.10 paf 862: case LS_DEF_COMMENT:
863: if(c=='\n') {
1.206 paf 864: pop_LS(pc);
1.48 paf 865: RC;
1.37 paf 866: }
867: break;
868:
1.48 paf 869: case LS_DEF_SPECIAL_BODY:
1.175 paf 870: if(c=='\n')
1.48 paf 871: RC;
872: break;
873:
874: // (EXPRESSION)
1.69 paf 875: case LS_VAR_ROUND:
876: case LS_METHOD_ROUND:
1.48 paf 877: switch(c) {
878: case ')':
879: if(--lexical_brackets_nestage==0)
1.206 paf 880: if(pc.ls==LS_METHOD_ROUND) // method round param ended
881: pc.ls=LS_METHOD_AFTER; // look for method end
882: else // pc.ls==LS_VAR_ROUND // variable constructor ended
883: pop_LS(pc); // return to normal life
1.48 paf 884: RC;
1.194 paf 885: case '#': // comment start skipping
886: if(end!=begin) {
1.206 paf 887: if(!pc.string_start)
888: pc.string_start=begin_pos;
1.194 paf 889: // append piece till #
1.206 paf 890: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 891: }
892: // fall into COMMENT lexical state [wait for \n]
1.206 paf 893: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 894: lexical_brackets_nestage=1;
895: continue;
1.48 paf 896: case '$':
1.206 paf 897: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 898: RC;
899: case '^':
1.206 paf 900: push_LS(pc, LS_METHOD_NAME);
1.48 paf 901: RC;
902: case '(':
903: lexical_brackets_nestage++;
904: RC;
1.67 paf 905: case '-':
1.206 paf 906: switch(*pc.source) {
1.127 paf 907: case 'f': // -f
1.67 paf 908: skip_analized=1;
909: result=FEXISTS;
1.127 paf 910: goto break2;
911: case 'd': // -d
912: skip_analized=1;
913: result=DEXISTS;
914: goto break2;
1.191 paf 915: default: // minus
1.67 paf 916: result=c;
1.127 paf 917: goto break2;
918: }
1.67 paf 919: goto break2;
1.173 paf 920: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 921: case '~':
1.48 paf 922: case ';':
923: RC;
1.193 paf 924: case '&': case '|':
1.206 paf 925: if(*pc.source==c) { // && ||
1.193 paf 926: result=c=='&'?LAND:LOR;
1.67 paf 927: skip_analized=1;
1.58 paf 928: } else
929: result=c;
930: goto break2;
1.193 paf 931: case '!':
1.206 paf 932: switch(pc.source[0]) {
1.193 paf 933: case '|': // !| !||
934: skip_analized=1;
1.206 paf 935: if(pc.source[1]=='|') {
1.193 paf 936: skip_analized++;
937: result=LXOR;
938: } else
939: result=NXOR;
940: goto break2;
941: case '=': // !=
942: skip_analized=1;
943: result=NNE;
944: goto break2;
945: }
946: RC;
1.195 paf 947:
948: case '<': // <<, <=, <
1.206 paf 949: switch(*pc.source) {
1.195 paf 950: case '<': // <[<]
951: skip_analized=1; result=NSL; break;
952: case '=': // <[=]
953: skip_analized=1; result=NLE; break;
954: default: // <[]
955: result=c; break;
956: }
957: goto break2;
958: case '>': // >>, >=, >
1.206 paf 959: switch(*pc.source) {
1.195 paf 960: case '>': // >[>]
961: skip_analized=1; result=NSR; break;
962: case '=': // >[=]
963: skip_analized=1; result=NGE; break;
964: default: // >[]
965: result=c; break;
966: }
967: goto break2;
968: case '=': // ==
1.206 paf 969: switch(*pc.source) {
1.195 paf 970: case '=': // =[=]
971: skip_analized=1; result=NEQ; break;
972: default: // =[]
973: result=c; break; // not used now
974: }
1.58 paf 975: goto break2;
1.195 paf 976:
1.48 paf 977: case '"':
1.206 paf 978: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 979: RC;
980: case '\'':
1.206 paf 981: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 982: RC;
1.50 paf 983: case 'l': case 'g': case 'e': case 'n':
1.51 paf 984: if(end==begin) // right after whitespace
1.206 paf 985: if(isspace(pc.source[1])) {
986: switch(*pc.source) {
1.117 paf 987: // case '?': // ok [and bad cases, yacc would bark at them]
988: case 't': // lt gt [et nt]
989: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
990: skip_analized=1;
991: goto break2;
992: case 'e': // le ge ne [ee]
993: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
994: skip_analized=1;
995: goto break2;
996: case 'q': // eq [lq gq nq]
997: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
998: skip_analized=1;
999: goto break2;
1000: }
1.67 paf 1001: }
1002: break;
1003: case 'i':
1004: if(end==begin) // right after whitespace
1.206 paf 1005: if(isspace(pc.source[1])) {
1006: switch(pc.source[0]) {
1.117 paf 1007: case 'n': // in
1.95 paf 1008: skip_analized=1;
1009: result=IN;
1010: goto break2;
1.117 paf 1011: case 's': // is
1.95 paf 1012: skip_analized=1;
1013: result=IS;
1014: goto break2;
1015: }
1.67 paf 1016: }
1017: break;
1018: case 'd':
1019: if(end==begin) // right after whitespace
1.206 paf 1020: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.67 paf 1021: skip_analized=2;
1022: result=DEF;
1.58 paf 1023: goto break2;
1.50 paf 1024: }
1.48 paf 1025: break;
1026: case ' ': case '\t': case '\n':
1.63 paf 1027: if(end!=begin) { // there were a string after previous operator?
1028: result=0; // return that string
1029: goto break2;
1.48 paf 1030: }
1.63 paf 1031: // that's a leading|traling space or after-operator-space
1032: // ignoring it
1033: // reset piece 'begin' position & line
1.206 paf 1034: begin=pc.source; // after whitespace char
1035: begin_pos=pc.pos;
1.48 paf 1036: continue;
1.1 paf 1037: }
1038: break;
1.194 paf 1039: case LS_EXPRESSION_COMMENT:
1040: if(c=='(')
1041: lexical_brackets_nestage++;
1042:
1.206 paf 1043: switch(*pc.source) {
1.194 paf 1044: case '\n': case ')':
1.206 paf 1045: if(*pc.source==')')
1.194 paf 1046: if(--lexical_brackets_nestage!=0)
1047: continue;
1048:
1049: // skip comment
1.206 paf 1050: begin=pc.source;
1051: begin_pos=pc.pos;
1.194 paf 1052:
1.206 paf 1053: pop_LS(pc);
1.194 paf 1054: continue;
1055: }
1056: break;
1.1 paf 1057:
1.10 paf 1058: // VARIABLE GET/PUT/WITH
1.166 parser 1059: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1060: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1061: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1062: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1063: if(
1.206 paf 1064: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1065: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1066: // name in expr ends also before
1.48 paf 1067: switch(c) {
1.181 paf 1068: // expression minus
1.92 paf 1069: case '-':
1.181 paf 1070: // expression integer division
1071: case '\\':
1.206 paf 1072: pop_LS(pc);
1073: pc.ungetc();
1.48 paf 1074: result=EON;
1075: goto break2;
1076: }
1077: }
1.166 parser 1078: if(
1.206 paf 1079: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1080: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1081: // name already has ':', stop before next
1082: switch(c) {
1083: case ':':
1.206 paf 1084: pop_LS(pc);
1085: pc.ungetc();
1.142 parser 1086: result=EON;
1087: goto break2;
1088: }
1089: }
1.48 paf 1090: switch(c) {
1091: case 0:
1092: case ' ': case '\t': case '\n':
1093: case ';':
1.126 paf 1094: case ']': case '}': case ')':
1095: case '"': case '\'':
1.139 parser 1096: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1097: case '+': case '*': case '/': case '%':
1098: case '&': case '|':
1099: case '=': case '!':
1.99 paf 1100: // common delimiters
1.190 paf 1101: case ',': case '?': case '#':
1.139 parser 1102: // before call
1103: case '^':
1.206 paf 1104: pop_LS(pc);
1105: pc.ungetc();
1.13 paf 1106: result=EON;
1.1 paf 1107: goto break2;
1.48 paf 1108: case '[':
1.162 parser 1109: // $name.<[>code]
1.206 paf 1110: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1111: end[-1]=='$'/*was start of get*/ ||
1112: end[-1]==':'/*was class name delim */ ||
1113: end[-1]=='.'/*was name delim */
1.162 parser 1114: )) {
1.206 paf 1115: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1116: lexical_brackets_nestage=1;
1117: RC;
1118: }
1.206 paf 1119: pc.ls=LS_VAR_SQUARE;
1.1 paf 1120: lexical_brackets_nestage=1;
1.48 paf 1121: RC;
1122: case '{':
1123: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1124: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1125: } else {
1.206 paf 1126: pc.ls=LS_VAR_CURLY;
1.48 paf 1127: lexical_brackets_nestage=1;
1128: }
1.69 paf 1129:
1.48 paf 1130: RC;
1131: case '(':
1.206 paf 1132: pc.ls=LS_VAR_ROUND;
1.1 paf 1133: lexical_brackets_nestage=1;
1.48 paf 1134: RC;
1135: case '.': // name part delim
1136: case '$': // name part subvar
1.160 parser 1137: case ':': // class<:>name
1.166 parser 1138: // go to _WITHOUT_COLON state variant...
1.206 paf 1139: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1140: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1141: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1142: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1143: // ...stop before next ':'
1.48 paf 1144: RC;
1.1 paf 1145: }
1146: break;
1.48 paf 1147:
1.1 paf 1148: case LS_VAR_NAME_CURLY:
1.48 paf 1149: switch(c) {
1.162 parser 1150: case '[':
1.166 parser 1151: // ${name.<[>code]}
1.206 paf 1152: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1153: lexical_brackets_nestage=1;
1154: RC;
1.48 paf 1155: case '}': // ${name} finished, restoring LS
1.206 paf 1156: pop_LS(pc);
1.48 paf 1157: RC;
1158: case '.': // name part delim
1159: case '$': // name part subvar
1160: case ':': // ':name' or 'class:name'
1161: RC;
1.1 paf 1162: }
1163: break;
1.48 paf 1164:
1165: case LS_VAR_SQUARE:
1166: switch(c) {
1167: case '$':
1.206 paf 1168: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1169: RC;
1170: case '^':
1.206 paf 1171: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1172: RC;
1173: case ']':
1.1 paf 1174: if(--lexical_brackets_nestage==0) {
1.206 paf 1175: pop_LS(pc);
1.48 paf 1176: RC;
1.1 paf 1177: }
1.48 paf 1178: break;
1179: case ';': // operator_or_fmt;value delim
1180: RC;
1181: case '[':
1182: lexical_brackets_nestage++;
1183: break;
1.1 paf 1184: }
1185: break;
1.48 paf 1186:
1.1 paf 1187: case LS_VAR_CURLY:
1.48 paf 1188: switch(c) {
1189: case '$':
1.206 paf 1190: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1191: RC;
1192: case '^':
1.206 paf 1193: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1194: RC;
1195: case '}':
1.1 paf 1196: if(--lexical_brackets_nestage==0) {
1.206 paf 1197: pop_LS(pc);
1.48 paf 1198: RC;
1.1 paf 1199: }
1.48 paf 1200: break;
1201: case '{':
1.1 paf 1202: lexical_brackets_nestage++;
1.48 paf 1203: break;
1204: }
1.1 paf 1205: break;
1206:
1.10 paf 1207: // METHOD CALL
1.1 paf 1208: case LS_METHOD_NAME:
1.48 paf 1209: switch(c) {
1210: case '[':
1.166 parser 1211: // ^name.<[>code].xxx
1.206 paf 1212: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1213: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1214: end[-1]==':'/*was class name delim */ ||
1215: end[-1]=='.'/*was name delim */
1.162 parser 1216: )) {
1.206 paf 1217: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1218: lexical_brackets_nestage=1;
1219: RC;
1220: }
1.206 paf 1221: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1222: lexical_brackets_nestage=1;
1.48 paf 1223: RC;
1224: case '{':
1.206 paf 1225: pc.ls=LS_METHOD_CURLY;
1.1 paf 1226: lexical_brackets_nestage=1;
1.48 paf 1227: RC;
1.69 paf 1228: case '(':
1.206 paf 1229: pc.ls=LS_METHOD_ROUND;
1.69 paf 1230: lexical_brackets_nestage=1;
1231: RC;
1.48 paf 1232: case '.': // name part delim
1233: case '$': // name part subvar
1234: case ':': // ':name' or 'class:name'
1.170 parser 1235: case '^': // ^abc^xxx wrong. bailing out
1236: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 ! paf 1237: case ' ': // ^if ( wrong. bailing out
1.48 paf 1238: RC;
1.1 paf 1239: }
1240: break;
1.48 paf 1241:
1242: case LS_METHOD_SQUARE:
1243: switch(c) {
1244: case '$':
1.206 paf 1245: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1246: RC;
1247: case '^':
1.206 paf 1248: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1249: RC;
1250: case ';': // param delim
1251: RC;
1252: case ']':
1.1 paf 1253: if(--lexical_brackets_nestage==0) {
1.206 paf 1254: pc.ls=LS_METHOD_AFTER;
1.48 paf 1255: RC;
1.1 paf 1256: }
1.48 paf 1257: break;
1258: case '[':
1.1 paf 1259: lexical_brackets_nestage++;
1.48 paf 1260: break;
1261: }
1.1 paf 1262: break;
1.48 paf 1263:
1.1 paf 1264: case LS_METHOD_CURLY:
1.48 paf 1265: switch(c) {
1266: case '$':
1.206 paf 1267: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1268: RC;
1269: case '^':
1.206 paf 1270: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1271: RC;
1272: case ';': // param delim
1.48 paf 1273: RC;
1274: case '}':
1.1 paf 1275: if(--lexical_brackets_nestage==0) {
1.206 paf 1276: pc.ls=LS_METHOD_AFTER;
1.48 paf 1277: RC;
1.1 paf 1278: }
1.48 paf 1279: break;
1280: case '{':
1.1 paf 1281: lexical_brackets_nestage++;
1.48 paf 1282: break;
1283: }
1.1 paf 1284: break;
1.48 paf 1285:
1.1 paf 1286: case LS_METHOD_AFTER:
1.69 paf 1287: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1288: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1289: lexical_brackets_nestage=1;
1.48 paf 1290: RC;
1.1 paf 1291: }
1.69 paf 1292: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1293: pc.ls=LS_METHOD_CURLY;
1.69 paf 1294: lexical_brackets_nestage=1;
1295: RC;
1296: }
1297: if(c=='(') {/* ]( }( )( */
1.206 paf 1298: pc.ls=LS_METHOD_ROUND;
1.1 paf 1299: lexical_brackets_nestage=1;
1.48 paf 1300: RC;
1.1 paf 1301: }
1.206 paf 1302: pop_LS(pc);
1303: pc.ungetc();
1.13 paf 1304: result=EON;
1.1 paf 1305: goto break2;
1306: }
1.9 paf 1307: if(c==0) {
1.1 paf 1308: result=-1;
1309: break;
1310: }
1311: }
1312:
1313: break2:
1.59 paf 1314: if(end!=begin) { // there is last piece?
1315: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1316: // strip last \n
1.10 paf 1317: end--;
1.137 parser 1318: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1319: end--;
1.59 paf 1320: }
1.206 paf 1321: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1322: if(!pc.string_start)
1323: pc.string_start=begin_pos;
1.59 paf 1324: // append it
1.206 paf 1325: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1326: }
1.59 paf 1327: }
1.206 paf 1328: if(!pc.string.is_empty()) { // something accumulated?
1329: // create STRING value: array of OP_VALUE+origin+vstring
1330: *lvalp=VL(
1331: new VString(*new String(pc.string, String::L_CLEAN)),
1332: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1333: // new pieces storage
1.206 paf 1334: pc.string.clear();
1335: pc.string_start.clear();
1.58 paf 1336: // make current result be pending for next call, return STRING for now
1.206 paf 1337: pc.pending_state=result; result=STRING;
1.58 paf 1338: }
1.67 paf 1339: if(skip_analized) {
1.206 paf 1340: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1341: }
1.58 paf 1342: return result;
1.1 paf 1343: }
1344:
1.206 paf 1345: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1346: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1347: return 1;
1.110 paf 1348: }
1.1 paf 1349:
1.110 paf 1350: static void yyprint(FILE *file, int type, YYSTYPE value) {
1351: if(type==STRING)
1.206 paf 1352: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1353: }
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