Annotation of parser3/src/main/compile.y, revision 1.204.2.2
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:
1.204.2.2! paf 8: $Id: compile.y,v 1.204.2.1 2003/01/30 09:34:30 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:
1.204.2.2! paf 22: #define YYSTYPE ArrayOperationPtr
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
1.9 paf 27: #define yyerror(msg) real_yyerror((parse_control *)pc, msg)
28: #define YYPRINT(file, type, value) yyprint(file, type, value)
1.1 paf 29:
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:
1.97 paf 39: #define USE_CONTROL_METHOD_NAME "USE"
1.1 paf 40:
1.125 paf 41: static int real_yyerror(parse_control *pc, char *s);
1.9 paf 42: static void yyprint(FILE *file, int type, YYSTYPE value);
1.125 paf 43: static int yylex(YYSTYPE *lvalp, void *pc);
1.1 paf 44:
45:
1.8 paf 46: // local convinient inplace typecast & var
1.114 paf 47: #define PC (*(parse_control *)pc)
48: #define POOL (*PC.pool)
1.25 paf 49: #undef NEW
50: #define NEW new(POOL)
1.107 paf 51: #ifndef DOXYGEN
1.1 paf 52: %}
53:
54: %pure_parser
55:
1.13 paf 56: %token EON
1.4 paf 57: %token STRING
1.1 paf 58: %token BOGUS
1.55 paf 59:
1.58 paf 60: %token BAD_STRING_COMPARISON_OPERATOR
1.114 paf 61: %token BAD_HEX_LITERAL
1.171 parser 62: %token BAD_METHOD_DECL_START
1.193 paf 63: %token BAD_METHOD_PARAMETER_NAME_CHARACTER
64: %token BAD_MATH_OPERATOR_CHARACTER
1.58 paf 65:
1.59 paf 66: %token LAND "&&"
1.58 paf 67: %token LOR "||"
1.193 paf 68: %token LXOR "!||"
69: %token NXOR "!|"
1.58 paf 70:
71: %token NLE "<="
72: %token NGE ">="
73: %token NEQ "=="
74: %token NNE "!="
1.195 paf 75: %token NSL "<<"
76: %token NSR ">>"
1.58 paf 77:
78: %token SLT "lt"
79: %token SGT "gt"
80: %token SLE "le"
81: %token SGE "ge"
82: %token SEQ "eq"
83: %token SNE "ne"
84:
1.67 paf 85: %token DEF "def"
86: %token IN "in"
87: %token FEXISTS "-f"
1.127 paf 88: %token DEXISTS "-d"
1.95 paf 89: %token IS "is"
1.67 paf 90:
1.57 paf 91: /* logical */
1.193 paf 92: %left "!||"
1.57 paf 93: %left "||"
94: %left "&&"
1.131 paf 95: %left '<' '>' "<=" ">=" "lt" "gt" "le" "ge"
96: %left "==" "!=" "eq" "ne"
97: %left "is" "def" "in" "-f" "-d"
1.57 paf 98:
99: /* bitwise */
1.193 paf 100: %left "!|"
1.131 paf 101: %left '|'
102: %left '&'
1.202 paf 103: %left "<<" ">>"
1.57 paf 104:
1.56 paf 105: /* numerical */
1.202 paf 106: %left '+' '-'
107: %left '*' '/' '\\' '%'
108: %left NUNARY /* unary - + */
109:
110: /* out-of-group */
111: %left '~' /* bitwise */
112: %left '!' /* logical */
1.1 paf 113:
114: %%
1.195 paf 115: all:
1.10 paf 116: one_big_piece {
1.204.2.2! paf 117: MethodPtr method(new Method(main_method_name, Method::CT_ANY,
1.81 paf 118: 0, 0, /*min, max numbered_params_count*/
1.204.2.2! paf 119: ArrayConstStringPtr(0)/*param_names*/, ArrayConstStringPtr(0)/*local_names*/,
! 120: $1/*parser_code*/, 0/*native_code*/));
! 121: PC.cclass->add_method(main_method_name, method);
1.10 paf 122: }
123: | methods;
124:
125: methods: method | methods method;
126: one_big_piece: maybe_codes;
127:
1.34 paf 128: method: control_method | code_method;
129:
130: control_method: '@' STRING '\n'
1.132 paf 131: maybe_control_strings {
1.204.2.2! paf 132: ConstStringPtr command=LA2S(*$2);
1.34 paf 133: YYSTYPE strings_code=$4;
1.204.2.2! paf 134: if(strings_code->count()<1*2) {
1.114 paf 135: strcpy(PC.error, "@");
1.204.2.2! paf 136: strcat(PC.error, command->cstr());
1.114 paf 137: strcat(PC.error, " is empty");
1.37 paf 138: YYERROR;
139: }
1.204.2.2! paf 140: if(*command==CLASS_NAME) {
1.188 paf 141: if(PC.cclass->base_class()) { // already changed from default?
1.114 paf 142: strcpy(PC.error, "class already have a name '");
1.204.2.2! paf 143: strncat(PC.error, PC.cclass->name()->cstr(), 100);
1.114 paf 144: strcat(PC.error, "'");
1.73 paf 145: YYERROR;
146: }
1.204.2.2! paf 147: if(strings_code->count()==1*2) {
1.73 paf 148: // new class' name
1.204.2.2! paf 149: ConstStringPtr name=LA2S(*strings_code);
1.73 paf 150: // creating the class
1.204.2.2! paf 151: PC.cclass=VStateless_classPtr(new VClass);
! 152: PC.cclass->set_name(name);
1.73 paf 153: // append to request's classes
1.204.2.2! paf 154: PC.request->classes().put(name, PC.cclass);
1.73 paf 155: } else {
1.114 paf 156: strcpy(PC.error, "@"CLASS_NAME" must contain sole name");
1.34 paf 157: YYERROR;
158: }
1.204.2.2! paf 159: } else if(*command==USE_CONTROL_METHOD_NAME) {
! 160: for(int i=0; i<strings_code->count(); i+=2)
! 161: PC.request->use_file(PC.request->main_class, LA2S(*strings_code, i));
! 162: } else if(*command==BASE_NAME) {
1.188 paf 163: if(PC.cclass->base_class()) { // already changed from default?
1.130 paf 164: strcpy(PC.error, "class already have a base '");
1.204.2.2! paf 165: strncat(PC.error, PC.cclass->base_class()->name()->cstr(), 100);
1.130 paf 166: strcat(PC.error, "'");
167: YYERROR;
168: }
1.204.2.2! paf 169: if(strings_code->count()==1*2) {
! 170: ConstStringPtr base_name=LA2S(*strings_code);
! 171: if(VStateless_classPtr base_class=PC.request->classes().get(base_name)) {
! 172: // @CLASS == @BASE sanity check
! 173: if(PC.cclass.get()==base_class.get()) {
! 174: strcpy(PC.error, "@"CLASS_NAME" equals @"BASE_NAME);
! 175: YYERROR;
! 176: }
! 177: PC.cclass->set_base(base_class);
! 178: } else {
! 179: strcpy(PC.error, base_name->cstr());
1.130 paf 180: strcat(PC.error, ": undefined class in @"BASE_NAME);
1.73 paf 181: YYERROR;
182: }
1.34 paf 183: } else {
1.130 paf 184: strcpy(PC.error, "@"BASE_NAME" must contain sole name");
1.34 paf 185: YYERROR;
186: }
1.130 paf 187: } else {
188: strcpy(PC.error, "'");
1.204.2.2! paf 189: strncat(PC.error, command->cstr(), MAX_STRING/2);
1.130 paf 190: strcat(PC.error, "' invalid special name. valid names are "
191: "'"CLASS_NAME"', '"USE_CONTROL_METHOD_NAME"' and '"BASE_NAME"'");
192: YYERROR;
1.34 paf 193: }
194: };
1.132 paf 195: maybe_control_strings: empty | control_strings;
1.204.2.2! paf 196: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2) };
1.37 paf 197: control_string: maybe_string '\n';
198: maybe_string: empty | STRING;
1.34 paf 199:
200: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n'
1.10 paf 201: maybe_codes {
1.204.2.2! paf 202: ConstStringPtr name=LA2S(*$2);
1.10 paf 203:
204: YYSTYPE params_names_code=$3;
1.204.2.2! paf 205: ArrayConstStringPtr params_names;
! 206: if(int size=params_names_code->count()) {
! 207: params_names=ArrayConstStringPtr(new ArrayConstString);
1.75 paf 208: for(int i=0; i<size; i+=2)
1.204.2.2! paf 209: *params_names+=LA2S(*params_names_code, i);
1.75 paf 210: }
1.10 paf 211:
212: YYSTYPE locals_names_code=$4;
1.204.2.2! paf 213: ArrayConstStringPtr locals_names;
! 214: if(int size=locals_names_code->count()) {
! 215: locals_names=ArrayConstStringPtr(new ArrayConstString);
1.75 paf 216: for(int i=0; i<size; i+=2)
1.204.2.2! paf 217: *locals_names+=LA2S(*locals_names_code, i);
1.75 paf 218: }
1.10 paf 219:
1.204.2.2! paf 220: MethodPtr method(new Method(
! 221: name,
1.122 paf 222: Method::CT_ANY,
1.81 paf 223: 0, 0/*min,max numbered_params_count*/,
1.76 paf 224: params_names, locals_names,
1.204.2.2! paf 225: $7, 0));
! 226: PC.cclass->add_method(name, method);
1.8 paf 227: };
1.10 paf 228:
229: maybe_bracketed_strings: empty | bracketed_maybe_strings;
230: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
231: maybe_strings: empty | strings;
1.204.2.2! paf 232: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3) };
1.10 paf 233:
234: maybe_comment: empty | STRING;
1.1 paf 235:
236: /* codes */
237:
1.10 paf 238: maybe_codes: empty | codes;
239:
1.204.2.2! paf 240: codes: code | codes code { $$=$1; P(*$$, *$2) };
1.81 paf 241: code: write_string | action;
1.149 parser 242: action: get | put | call;
1.1 paf 243:
244: /* get */
245:
1.64 paf 246: get: get_value {
1.184 paf 247: $$=$1; /* stack: resulting value */
1.204.2.2! paf 248: changetail_or_append(*$$,
1.186 paf 249: OP_GET_ELEMENT, false, /*->*/OP_GET_ELEMENT__WRITE,
250: /*or */OP_WRITE_VALUE
1.184 paf 251: ); /* value=pop; wcontext.write(value) */
1.1 paf 252: };
1.163 parser 253: get_value: '$' get_name_value { $$=$2 };
1.64 paf 254: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 255: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 256: name_without_curly_rdive:
257: name_without_curly_rdive_read
258: | name_without_curly_rdive_class;
1.19 paf 259: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.204.2.2! paf 260: $$=N();
! 261: ArrayOperationPtr diving_code=$1;
! 262: ConstStringPtr first_name=LA2S(*diving_code);
1.179 paf 263: // self.xxx... -> xxx...
264: // OP_VALUE+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 265: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.204.2.2! paf 266: O(*$$, OP_WITH_SELF); /* stack: starting context */
! 267: P(*$$, *diving_code,
1.22 paf 268: /* skip over... */
1.204.2.2! paf 269: diving_code->count()>=3?3/*OP_VALUE+string+OP_GET_ELEMENTx*/:2/*OP_+string*/);
1.22 paf 270: } else {
1.204.2.2! paf 271: O(*$$, OP_WITH_READ); /* stack: starting context */
1.179 paf 272:
1.201 paf 273: // ^if ELEMENT -> ^if ELEMENT_OR_OPERATOR
274: // OP_VALUE+string+OP_GET_ELEMENT. -> OP_VALUE+string+OP_GET_ELEMENT_OR_OPERATOR.
1.204.2.2! paf 275: if(PC.in_call_value && diving_code->count()==3)
! 276: (*diving_code)[2].code=OP_GET_ELEMENT_OR_OPERATOR;
! 277: P(*$$, *diving_code);
1.22 paf 278: }
279: /* diving code; stack: current context */
1.1 paf 280: };
1.204.2.2! paf 281: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2) };
! 282: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2) };
1.1 paf 283:
284: /* put */
285:
1.81 paf 286: put: '$' name_expr_wdive construct {
1.20 paf 287: $$=$2; /* stack: context,name */
1.204.2.2! paf 288: P(*$$, *$3); /* stack: context,name,constructor_value */
1.20 paf 289: };
1.44 paf 290: name_expr_wdive:
1.157 parser 291: name_expr_wdive_root
292: | name_expr_wdive_write
1.44 paf 293: | name_expr_wdive_class;
1.157 parser 294: name_expr_wdive_root: name_expr_dive_code {
1.204.2.2! paf 295: $$=N();
! 296: ArrayOperationPtr diving_code=$1;
! 297: ConstStringPtr first_name=LA2S(*diving_code);
1.179 paf 298: // $self.xxx... -> $xxx...
299: // OP_VALUE+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 300: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.204.2.2! paf 301: O(*$$, OP_WITH_SELF); /* stack: starting context */
! 302: P(*$$, *diving_code,
1.23 paf 303: /* skip over... */
1.204.2.2! paf 304: diving_code->count()>=3?3/*OP_VALUE+string+OP_GET_ELEMENTx*/:2/*OP_+string*/);
1.23 paf 305: } else {
1.204.2.2! paf 306: O(*$$, OP_WITH_ROOT); /* stack: starting context */
! 307: P(*$$, *diving_code);
1.23 paf 308: }
309: /* diving code; stack: current context */
1.156 parser 310: };
1.157 parser 311: name_expr_wdive_write: '.' name_expr_dive_code {
1.204.2.2! paf 312: $$=N();
! 313: O(*$$, OP_WITH_WRITE); /* stack: starting context */
! 314: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 315: };
1.204.2.2! paf 316: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2) };
1.20 paf 317:
1.149 parser 318: construct:
1.163 parser 319: construct_square
320: | construct_round
321: | construct_curly
1.149 parser 322: ;
323: construct_square: '[' any_constructor_code_value ']' {
324: // stack: context, name
325: $$=$2; // stack: context, name, value
1.204.2.2! paf 326: O(*$$, OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 327: }
328: ;
1.149 parser 329: construct_round: '(' expr_value ')' {
1.204.2.2! paf 330: $$=N();
! 331: O(*$$, OP_PREPARE_TO_EXPRESSION);
1.149 parser 332: // stack: context, name
1.204.2.2! paf 333: P(*$$, *$2); // stack: context, name, value
! 334: O(*$$, OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 335: }
1.52 paf 336: ;
1.149 parser 337: construct_curly: '{' maybe_codes '}' {
338: // stack: context, name
1.204.2.2! paf 339: $$=N();
! 340: OA(*$$, OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 341: };
342:
1.55 paf 343: any_constructor_code_value:
1.157 parser 344: void_value /* optimized $var[] case */
1.52 paf 345: | STRING /* optimized $var[STRING] case */
1.55 paf 346: | constructor_code_value /* $var[something complex] */
1.1 paf 347: ;
1.55 paf 348: constructor_code_value: constructor_code {
1.204.2.2! paf 349: $$=N();
! 350: OA(*$$, OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 351: /* some code that writes to that context */
352: /* context=pop; stack: context.value() */
1.1 paf 353: };
1.55 paf 354: constructor_code: codes__excluding_sole_str_literal;
1.204.2.2! paf 355: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 356:
1.1 paf 357: /* call */
358:
1.66 paf 359: call: call_value {
360: $$=$1; /* stack: value */
1.204.2.2! paf 361: changetail_or_append(*$$,
1.186 paf 362: OP_CALL, true, /*->*/ OP_CALL__WRITE,
363: /*or */OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.66 paf 364: };
1.177 paf 365: call_value: '^' {
1.180 paf 366: PC.in_call_value=true;
1.177 paf 367: }
368: call_name {
1.180 paf 369: PC.in_call_value=false;
1.177 paf 370: }
1.154 parser 371: store_params EON { /* ^field.$method{vasya} */
372: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 373:
1.154 parser 374: YYSTYPE params_code=$5;
1.204.2.2! paf 375: if(params_code->count()==3) { // probably [] case. [OP_VALUE + Void + STORE_PARAM]
! 376: if(ValuePtr value=LA2V(*params_code)) // it is OP_VALUE + value?
1.140 parser 377: if(!value->is_defined()) // value is VVoid?
1.204.2.2! paf 378: params_code=YYSTYPE(0); // ^zzz[] case. don't append lone empty param.
1.186 paf 379: }
380: /* stack: context, method_junction */
1.204.2.2! paf 381: OA(*$$, OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
1.1 paf 382: };
383:
1.43 paf 384: call_name: name_without_curly_rdive;
1.38 paf 385:
1.204.2.2! paf 386: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2) };
1.69 paf 387: store_param:
388: store_square_param
389: | store_round_param
390: | store_curly_param
1.31 paf 391: ;
1.123 paf 392: store_square_param: '[' store_code_param_parts ']' {$$=$2};
1.69 paf 393: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 394: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 395: store_code_param_parts:
396: store_code_param_part
1.204.2.2! paf 397: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 398: ;
399: store_expr_param_parts:
400: store_expr_param_part
1.204.2.2! paf 401: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 402: ;
1.94 paf 403: store_curly_param_parts:
404: store_curly_param_part
1.204.2.2! paf 405: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3) }
1.94 paf 406: ;
1.120 paf 407: store_code_param_part: code_param_value {
1.32 paf 408: $$=$1;
1.204.2.2! paf 409: O(*$$, OP_STORE_PARAM);
1.120 paf 410: };
1.69 paf 411: store_expr_param_part: write_expr_value {
1.204.2.2! paf 412: $$=N();
! 413: OA(*$$, OP_EXPR_CODE__STORE_PARAM, $1);
1.69 paf 414: };
1.94 paf 415: store_curly_param_part: maybe_codes {
1.204.2.2! paf 416: $$=N();
! 417: OA(*$$, OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 418: };
1.120 paf 419: code_param_value:
1.157 parser 420: void_value /* optimized [;...] case */
1.120 paf 421: | STRING /* optimized [STRING] case */
422: | constructor_code_value /* [something complex] */
423: ;
1.90 paf 424: write_expr_value: expr_value {
1.204.2.2! paf 425: $$=N();
! 426: O(*$$, OP_PREPARE_TO_EXPRESSION);
! 427: P(*$$, *$1);
! 428: O(*$$, OP_WRITE_EXPR_RESULT);
1.69 paf 429: };
1.1 paf 430:
431: /* name */
432:
1.204.2.2! paf 433: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 434:
1.204.2.2! paf 435: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 436: name_step: name_advance1 '.';
437: name_advance1: name_expr_value {
1.177 paf 438: // we know that name_advance1 not called from ^xxx context
439: // so we'll not check for operator call possibility as we do in name_advance2
440:
1.1 paf 441: /* stack: context */
442: $$=$1; /* stack: context,name */
1.204.2.2! paf 443: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 444: };
445: name_advance2: name_expr_value {
446: /* stack: context */
447: $$=$1; /* stack: context,name */
1.204.2.2! paf 448: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 449: }
1.4 paf 450: | STRING BOGUS
1.1 paf 451: ;
452: name_expr_value:
1.4 paf 453: STRING /* subname_is_const */
1.1 paf 454: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 455: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 456: | name_square_code_value /* [codes] */
1.1 paf 457: ;
458: name_expr_subvar_value: '$' subvar_ref_name_rdive {
459: $$=$2;
1.204.2.2! paf 460: O(*$$, OP_GET_ELEMENT);
1.1 paf 461: };
1.4 paf 462: name_expr_with_subvar_value: STRING subvar_get_writes {
1.204.2.2! paf 463: ArrayOperationPtr code;
1.183 paf 464: {
1.204.2.2! paf 465: change_string_literal_to_write_string_literal(*(code=$1));
! 466: P(*code, *$2);
1.183 paf 467: }
1.204.2.2! paf 468: $$=N();
! 469: OA(*$$, OP_STRING_POOL, code);
1.1 paf 470: };
1.166 parser 471: name_square_code_value: '[' codes ']' {
1.204.2.2! paf 472: $$=N();
! 473: OA(*$$, OP_OBJECT_POOL, $2); /* stack: empty write context */
1.183 paf 474: /* some code that writes to that context */
475: /* context=pop; stack: context.value() */
1.160 parser 476: };
1.154 parser 477: subvar_ref_name_rdive: STRING {
1.204.2.2! paf 478: $$=N();
! 479: O(*$$, OP_WITH_READ);
! 480: P(*$$, *$1);
1.1 paf 481: };
1.204.2.2! paf 482: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 483: subvar__get_write: '$' subvar_ref_name_rdive {
484: $$=$2;
1.204.2.2! paf 485: O(*$$, OP_GET_ELEMENT__WRITE);
1.42 paf 486: };
487:
1.154 parser 488: class_prefix:
489: class_static_prefix
490: | class_constructor_prefix
491: ;
1.155 parser 492: class_static_prefix: STRING ':' {
493: $$=$1; // stack: class name string
1.204.2.2! paf 494: if(*LA2S(*$$) == BASE_NAME) { // pseude BASE class
! 495: if(VStateless_classPtr base=PC.cclass->base_class()) {
! 496: change_string_literal_value(*$$, base->name());
1.189 paf 497: } else {
498: strcpy(PC.error, "no base class declared");
499: YYERROR;
500: }
501: }
1.204.2.2! paf 502: O(*$$, OP_GET_CLASS);
1.155 parser 503: };
504: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 505: $$=$1;
1.180 paf 506: if(!PC.in_call_value) {
1.154 parser 507: strcpy(PC.error, ":: not allowed here");
508: YYERROR;
509: }
1.204.2.2! paf 510: O(*$$, OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 511: };
512:
1.53 paf 513:
1.56 paf 514: /* expr */
1.53 paf 515:
1.81 paf 516: expr_value: expr {
1.182 paf 517: // see OP_PREPARE_TO_EXPRESSION!!
1.204.2.2! paf 518: if(($$=$1)->count()==2) // only one string literal in there?
! 519: change_string_literal_to_double_literal(*$$); // make that string literal Double
1.62 paf 520: };
1.56 paf 521: expr:
1.62 paf 522: STRING
1.64 paf 523: | get_value
1.66 paf 524: | call_value
1.64 paf 525: | '"' string_inside_quotes_value '"' { $$ = $2; }
1.145 parser 526: | '\'' string_inside_quotes_value '\'' { $$ = $2; }
1.60 paf 527: | '(' expr ')' { $$ = $2; }
528: /* stack: operand // stack: @operand */
1.204.2.2! paf 529: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP_NEG) }
1.202 paf 530: | '+' expr %prec NUNARY { $$=$2 }
1.204.2.2! paf 531: | '~' expr { $$=$2; O(*$$, OP_INV) }
! 532: | '!' expr { $$=$2; O(*$$, OP_NOT) }
! 533: | "def" expr { $$=$2; O(*$$, OP_DEF) }
! 534: | "in" expr { $$=$2; O(*$$, OP_IN) }
! 535: | "-f" expr { $$=$2; O(*$$, OP_FEXISTS) }
! 536: | "-d" expr { $$=$2; O(*$$, OP_DEXISTS) }
1.60 paf 537: /* stack: a,b // stack: a@b */
1.204.2.2! paf 538: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP_SUB) }
! 539: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP_ADD) }
! 540: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MUL) }
! 541: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP_DIV) }
! 542: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MOD) }
! 543: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP_INTDIV) }
! 544: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SL) }
! 545: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SR) }
! 546: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_AND) }
! 547: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_OR) }
! 548: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_XOR) }
! 549: | expr "&&" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_AND) }
! 550: | expr "||" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_OR) }
! 551: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP_LOG_XOR) }
! 552: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LT) }
! 553: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GT) }
! 554: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LE) }
! 555: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GE) }
! 556: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_EQ) }
! 557: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_NE) }
! 558: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LT) }
! 559: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GT) }
! 560: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LE) }
! 561: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GE) }
! 562: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_EQ) }
! 563: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_NE) }
! 564: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP_IS) }
1.56 paf 565: ;
1.55 paf 566:
1.65 paf 567: string_inside_quotes_value: maybe_codes {
1.204.2.2! paf 568: $$=N();
! 569: OA(*$$, OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 570: /* some code that writes to that context */
571: /* context=pop; stack: context.get_string() */
1.53 paf 572: };
1.1 paf 573:
1.27 paf 574: /* basics */
1.1 paf 575:
1.81 paf 576: write_string: STRING {
1.102 paf 577: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
1.204.2.2! paf 578: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 579: };
580:
1.204.2.2! paf 581: void_value: /* empty */ { $$=VL(ValuePtr(new VVoid())) };
! 582: empty: /* empty */ { $$=N() };
1.1 paf 583:
584: %%
1.105 paf 585: #endif
1.1 paf 586:
587: /*
588: 000$111(2222)00
589: 000$111{3333}00
1.9 paf 590: $,^: push,=0
1.1 paf 591: 1:( { break=pop
592: 2:( ) pop
593: 3:{ } pop
594:
595: 000^111(2222)4444{33333}4000
1.9 paf 596: $,^: push,=0
1.1 paf 597: 1:( { break=pop
598: 2:( )=4
599: 3:{ }=4
600: 4:[^({]=pop
601: */
602:
1.110 paf 603: static int yylex(YYSTYPE *lvalp, void *pc) {
1.177 paf 604: #define lexical_brackets_nestage PC.brackets_nestages[PC.ls_sp]
1.48 paf 605: #define RC {result=c; goto break2; }
1.1 paf 606:
607: register int c;
608: int result;
609:
1.114 paf 610: if(PC.pending_state) {
611: result=PC.pending_state;
612: PC.pending_state=0;
1.1 paf 613: return result;
614: }
615:
1.114 paf 616: const char *begin=PC.source;
1.91 paf 617: const char *end;
1.114 paf 618: int begin_line=PC.line;
1.67 paf 619: int skip_analized=0;
1.50 paf 620: while(true) {
1.114 paf 621: c=*(end=(PC.source++));
1.166 parser 622: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, PC.sp);
1.1 paf 623:
1.4 paf 624: if(c=='\n') {
1.114 paf 625: PC.line++;
626: PC.col=0;
1.10 paf 627: } else
1.114 paf 628: PC.col++;
1.73 paf 629:
1.171 parser 630: if(c=='@' && PC.col==0+1) {
1.175 paf 631: if(PC.ls==LS_DEF_SPECIAL_BODY) {
632: // @SPECIAL
633: // ...
634: // @<here =
635: pop_LS(PC); // exiting from LS_DEF_SPECIAL_BODY state
636: } // continuing checks
1.171 parser 637: if(PC.ls==LS_USER) {
638: push_LS(PC, LS_DEF_NAME);
639: RC;
1.175 paf 640: } else // @ in first column inside some code [when could that be?]
1.171 parser 641: result=BAD_METHOD_DECL_START;
642: goto break2;
1.203 paf 643: } else if(c=='^') {
644: if(PC.ls==LS_METHOD_AFTER) {
645: // handle after-method situation
646: pop_LS(PC);
647: result=EON;
648: skip_analized=-1; // return to punctuation afterwards to assure it's literality
649: goto break2;
650: }
1.169 parser 651: switch(PC.ls) {
652: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
653: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
654: case LS_VAR_NAME_SIMPLE_WITH_COLON:
655: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
656: case LS_VAR_NAME_CURLY:
657: case LS_METHOD_NAME:
1.194 paf 658: case LS_USER_COMMENT:
1.169 parser 659: case LS_DEF_COMMENT:
660: // no literals in names, please
661: break;
662: default:
1.114 paf 663: switch(*PC.source) {
1.165 parser 664: // ^escaping some punctuators
1.48 paf 665: case '^': case '$': case ';':
1.126 paf 666: case '(': case ')':
1.48 paf 667: case '[': case ']':
668: case '{': case '}':
1.172 parser 669: case '"': case ':':
1.40 paf 670: if(end!=begin) {
671: // append piece till ^
1.121 paf 672: PC.string->APPEND_CLEAN(begin, end-begin, PC.file, begin_line);
1.40 paf 673: }
1.63 paf 674: // reset piece 'begin' position & line
1.203 paf 675: begin=PC.source; // ->punctuation
1.114 paf 676: begin_line=PC.line;
1.203 paf 677: // skip over _ after ^
678: PC.source++; PC.col++;
679: // skip analysis = forced literal
680: continue;
1.114 paf 681:
682: // converting ^#HH into char(hex(HH))
683: case '#':
684: if(end!=begin) {
685: // append piece till ^
1.121 paf 686: PC.string->APPEND_CLEAN(begin, end-begin, PC.file, begin_line);
1.114 paf 687: }
688: // #HH ?
689: if(PC.source[0]=='#' && PC.source[1] && PC.source[2]) {
690: char *hex=(char *)POOL.malloc(1);
691: hex[0]=
692: hex_value[(unsigned char)PC.source[1]]*0x10+
693: hex_value[(unsigned char)PC.source[2]];
694: if(hex[0]==0) {
695: result=BAD_HEX_LITERAL;
696: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
697: }
698: // append char(hex(HH))
1.121 paf 699: PC.string->APPEND_CLEAN(hex, 1, PC.file, begin_line);
1.114 paf 700: // skip over ^#HH
701: PC.source+=3;
702: PC.col+=3;
703: // reset piece 'begin' position & line
1.203 paf 704: begin=PC.source; // ->after ^#HH
1.114 paf 705: begin_line=PC.line;
1.203 paf 706: // skip analysis = forced literal
1.114 paf 707: continue;
708: }
709: break;
1.1 paf 710: }
1.169 parser 711: break;
1.203 paf 712: }
1.169 parser 713: }
1.113 paf 714: // #comment start skipping
1.114 paf 715: if(c=='#' && PC.col==1) {
1.112 paf 716: if(end!=begin) {
717: // append piece till #
1.121 paf 718: PC.string->APPEND_CLEAN(begin, end-begin, PC.file, begin_line);
1.112 paf 719: }
720: // fall into COMMENT lexical state [wait for \n]
1.194 paf 721: push_LS(PC, LS_USER_COMMENT);
1.175 paf 722: continue;
1.112 paf 723: }
1.114 paf 724: switch(PC.ls) {
1.10 paf 725:
726: // USER'S = NOT OURS
1.1 paf 727: case LS_USER:
1.166 parser 728: case LS_NAME_SQUARE_PART: // name.[here].xxx
1.153 parser 729: if(PC.trim_bof)
730: switch(c) {
731: case '\n': case ' ': case '\t':
1.152 parser 732: begin=PC.source;
733: begin_line=PC.line;
734: continue; // skip it
1.153 parser 735: default:
736: PC.trim_bof=false;
1.152 parser 737: }
1.48 paf 738: switch(c) {
739: case '$':
1.166 parser 740: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 741: RC;
742: case '^':
743: push_LS(PC, LS_METHOD_NAME);
744: RC;
1.166 parser 745: case ']':
746: if(PC.ls==LS_NAME_SQUARE_PART)
747: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
748: pop_LS(PC); // $name.[co<]>de<]!>
749: RC;
750: }
1.160 parser 751: break;
1.166 parser 752: case '[': // $name.[co<[>de]
753: if(PC.ls==LS_NAME_SQUARE_PART)
754: lexical_brackets_nestage++;
1.161 parser 755: break;
1.112 paf 756: }
757: break;
758:
759: // #COMMENT
1.194 paf 760: case LS_USER_COMMENT:
1.112 paf 761: if(c=='\n') {
762: // skip comment
1.114 paf 763: begin=PC.source;
764: begin_line=PC.line;
1.112 paf 765:
766: pop_LS(PC);
767: continue;
1.1 paf 768: }
1.48 paf 769: break;
770:
771: // STRING IN EXPRESSION
1.145 parser 772: case LS_EXPRESSION_STRING_QUOTED:
773: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 774: switch(c) {
775: case '"':
1.145 parser 776: case '\'':
777: if(
778: PC.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
779: PC.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
780: pop_LS(PC); //"abc". | 'abc'.
781: RC;
782: }
783: break;
1.48 paf 784: case '$':
1.166 parser 785: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 786: RC;
787: case '^':
1.10 paf 788: push_LS(PC, LS_METHOD_NAME);
1.48 paf 789: RC;
1.10 paf 790: }
791: break;
792:
793: // METHOD DEFINITION
794: case LS_DEF_NAME:
1.48 paf 795: switch(c) {
796: case '[':
1.114 paf 797: PC.ls=LS_DEF_PARAMS;
1.48 paf 798: RC;
799: case '\n':
1.114 paf 800: PC.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 801: RC;
1.10 paf 802: }
803: break;
1.48 paf 804:
1.10 paf 805: case LS_DEF_PARAMS:
1.48 paf 806: switch(c) {
1.192 paf 807: case '$': // common error
1.193 paf 808: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
809: goto break2;
1.48 paf 810: case ';':
811: RC;
812: case ']':
1.114 paf 813: PC.ls=*PC.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 814: RC;
1.49 paf 815: case '\n': // wrong. bailing out
1.10 paf 816: pop_LS(PC);
1.48 paf 817: RC;
1.10 paf 818: }
819: break;
1.48 paf 820:
1.10 paf 821: case LS_DEF_LOCALS:
1.48 paf 822: switch(c) {
823: case '[':
824: case ';':
825: RC;
826: case ']':
1.114 paf 827: PC.ls=LS_DEF_COMMENT;
1.48 paf 828: RC;
829: case '\n': // wrong. bailing out
1.10 paf 830: pop_LS(PC);
1.48 paf 831: RC;
1.10 paf 832: }
833: break;
1.48 paf 834:
1.10 paf 835: case LS_DEF_COMMENT:
836: if(c=='\n') {
837: pop_LS(PC);
1.48 paf 838: RC;
1.37 paf 839: }
840: break;
841:
1.48 paf 842: case LS_DEF_SPECIAL_BODY:
1.175 paf 843: if(c=='\n')
1.48 paf 844: RC;
845: break;
846:
847: // (EXPRESSION)
1.69 paf 848: case LS_VAR_ROUND:
849: case LS_METHOD_ROUND:
1.48 paf 850: switch(c) {
851: case ')':
852: if(--lexical_brackets_nestage==0)
1.114 paf 853: if(PC.ls==LS_METHOD_ROUND) // method round param ended
854: PC.ls=LS_METHOD_AFTER; // look for method end
855: else // PC.ls==LS_VAR_ROUND // variable constructor ended
1.69 paf 856: pop_LS(PC); // return to normal life
1.48 paf 857: RC;
1.194 paf 858: case '#': // comment start skipping
859: if(end!=begin) {
860: // append piece till #
861: PC.string->APPEND_CLEAN(begin, end-begin, PC.file, begin_line);
862: }
863: // fall into COMMENT lexical state [wait for \n]
864: push_LS(PC, LS_EXPRESSION_COMMENT);
865: lexical_brackets_nestage=1;
866: continue;
1.48 paf 867: case '$':
1.166 parser 868: push_LS(PC, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 869: RC;
870: case '^':
871: push_LS(PC, LS_METHOD_NAME);
872: RC;
873: case '(':
874: lexical_brackets_nestage++;
875: RC;
1.67 paf 876: case '-':
1.127 paf 877: switch(*PC.source) {
878: case 'f': // -f
1.67 paf 879: skip_analized=1;
880: result=FEXISTS;
1.127 paf 881: goto break2;
882: case 'd': // -d
883: skip_analized=1;
884: result=DEXISTS;
885: goto break2;
1.191 paf 886: default: // minus
1.67 paf 887: result=c;
1.127 paf 888: goto break2;
889: }
1.67 paf 890: goto break2;
1.173 paf 891: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 892: case '~':
1.48 paf 893: case ';':
894: RC;
1.193 paf 895: case '&': case '|':
1.114 paf 896: if(*PC.source==c) { // && ||
1.193 paf 897: result=c=='&'?LAND:LOR;
1.67 paf 898: skip_analized=1;
1.58 paf 899: } else
900: result=c;
901: goto break2;
1.193 paf 902: case '!':
903: switch(PC.source[0]) {
904: case '|': // !| !||
905: skip_analized=1;
906: if(PC.source[1]=='|') {
907: skip_analized++;
908: result=LXOR;
909: } else
910: result=NXOR;
911: goto break2;
912: case '=': // !=
913: skip_analized=1;
914: result=NNE;
915: goto break2;
916: }
917: RC;
1.195 paf 918:
919: case '<': // <<, <=, <
920: switch(*PC.source) {
921: case '<': // <[<]
922: skip_analized=1; result=NSL; break;
923: case '=': // <[=]
924: skip_analized=1; result=NLE; break;
925: default: // <[]
926: result=c; break;
927: }
928: goto break2;
929: case '>': // >>, >=, >
930: switch(*PC.source) {
931: case '>': // >[>]
932: skip_analized=1; result=NSR; break;
933: case '=': // >[=]
934: skip_analized=1; result=NGE; break;
935: default: // >[]
936: result=c; break;
937: }
938: goto break2;
939: case '=': // ==
940: switch(*PC.source) {
941: case '=': // =[=]
942: skip_analized=1; result=NEQ; break;
943: default: // =[]
944: result=c; break; // not used now
945: }
1.58 paf 946: goto break2;
1.195 paf 947:
1.48 paf 948: case '"':
1.145 parser 949: push_LS(PC, LS_EXPRESSION_STRING_QUOTED);
950: RC;
951: case '\'':
952: push_LS(PC, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 953: RC;
1.50 paf 954: case 'l': case 'g': case 'e': case 'n':
1.51 paf 955: if(end==begin) // right after whitespace
1.117 paf 956: if(isspace(PC.source[1])) {
957: switch(*PC.source) {
958: // case '?': // ok [and bad cases, yacc would bark at them]
959: case 't': // lt gt [et nt]
960: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
961: skip_analized=1;
962: goto break2;
963: case 'e': // le ge ne [ee]
964: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
965: skip_analized=1;
966: goto break2;
967: case 'q': // eq [lq gq nq]
968: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
969: skip_analized=1;
970: goto break2;
971: }
1.67 paf 972: }
973: break;
974: case 'i':
975: if(end==begin) // right after whitespace
1.117 paf 976: if(isspace(PC.source[1])) {
977: switch(PC.source[0]) {
978: case 'n': // in
1.95 paf 979: skip_analized=1;
980: result=IN;
981: goto break2;
1.117 paf 982: case 's': // is
1.95 paf 983: skip_analized=1;
984: result=IS;
985: goto break2;
986: }
1.67 paf 987: }
988: break;
989: case 'd':
990: if(end==begin) // right after whitespace
1.114 paf 991: if(PC.source[0]=='e' && PC.source[1]=='f') { // def
1.67 paf 992: skip_analized=2;
993: result=DEF;
1.58 paf 994: goto break2;
1.50 paf 995: }
1.48 paf 996: break;
997: case ' ': case '\t': case '\n':
1.63 paf 998: if(end!=begin) { // there were a string after previous operator?
999: result=0; // return that string
1000: goto break2;
1.48 paf 1001: }
1.63 paf 1002: // that's a leading|traling space or after-operator-space
1003: // ignoring it
1004: // reset piece 'begin' position & line
1.114 paf 1005: begin=PC.source; // after whitespace char
1006: begin_line=PC.line;
1.48 paf 1007: continue;
1.1 paf 1008: }
1009: break;
1.194 paf 1010: case LS_EXPRESSION_COMMENT:
1011: if(c=='(')
1012: lexical_brackets_nestage++;
1013:
1014: switch(*PC.source) {
1015: case '\n': case ')':
1016: if(*PC.source==')')
1017: if(--lexical_brackets_nestage!=0)
1018: continue;
1019:
1020: // skip comment
1021: begin=PC.source;
1022: begin_line=PC.line;
1023:
1024: pop_LS(PC);
1025: continue;
1026: }
1027: break;
1.1 paf 1028:
1.10 paf 1029: // VARIABLE GET/PUT/WITH
1.166 parser 1030: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1031: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1032: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1033: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1034: if(
1035: PC.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1036: PC.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1037: // name in expr ends also before
1.48 paf 1038: switch(c) {
1.181 paf 1039: // expression minus
1.92 paf 1040: case '-':
1.181 paf 1041: // expression integer division
1042: case '\\':
1.48 paf 1043: pop_LS(PC);
1.114 paf 1044: PC.source--; if(--PC.col<0) { PC.line--; PC.col=-1; }
1.48 paf 1045: result=EON;
1046: goto break2;
1047: }
1048: }
1.166 parser 1049: if(
1050: PC.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1051: PC.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1052: // name already has ':', stop before next
1053: switch(c) {
1054: case ':':
1055: pop_LS(PC);
1056: PC.source--; if(--PC.col<0) { PC.line--; PC.col=-1; }
1057: result=EON;
1058: goto break2;
1059: }
1060: }
1.48 paf 1061: switch(c) {
1062: case 0:
1063: case ' ': case '\t': case '\n':
1064: case ';':
1.126 paf 1065: case ']': case '}': case ')':
1066: case '"': case '\'':
1.139 parser 1067: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1068: case '+': case '*': case '/': case '%':
1069: case '&': case '|':
1070: case '=': case '!':
1.99 paf 1071: // common delimiters
1.190 paf 1072: case ',': case '?': case '#':
1.139 parser 1073: // before call
1074: case '^':
1.1 paf 1075: pop_LS(PC);
1.114 paf 1076: PC.source--; if(--PC.col<0) { PC.line--; PC.col=-1; }
1.13 paf 1077: result=EON;
1.1 paf 1078: goto break2;
1.48 paf 1079: case '[':
1.162 parser 1080: // $name.<[>code]
1081: if(PC.col>1/*not first column*/ && (
1.163 parser 1082: end[-1]=='$'/*was start of get*/ ||
1083: end[-1]==':'/*was class name delim */ ||
1084: end[-1]=='.'/*was name delim */
1.162 parser 1085: )) {
1.166 parser 1086: push_LS(PC, LS_NAME_SQUARE_PART);
1.162 parser 1087: lexical_brackets_nestage=1;
1088: RC;
1089: }
1.114 paf 1090: PC.ls=LS_VAR_SQUARE;
1.1 paf 1091: lexical_brackets_nestage=1;
1.48 paf 1092: RC;
1093: case '{':
1094: if(begin==end) { // ${name}, no need of EON, switching LS
1.114 paf 1095: PC.ls=LS_VAR_NAME_CURLY;
1.48 paf 1096: } else {
1.114 paf 1097: PC.ls=LS_VAR_CURLY;
1.48 paf 1098: lexical_brackets_nestage=1;
1099: }
1.69 paf 1100:
1.48 paf 1101: RC;
1102: case '(':
1.114 paf 1103: PC.ls=LS_VAR_ROUND;
1.1 paf 1104: lexical_brackets_nestage=1;
1.48 paf 1105: RC;
1106: case '.': // name part delim
1107: case '$': // name part subvar
1.160 parser 1108: case ':': // class<:>name
1.166 parser 1109: // go to _WITHOUT_COLON state variant...
1110: if(PC.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1111: PC.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1112: else if(PC.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1113: PC.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1114: // ...stop before next ':'
1.48 paf 1115: RC;
1.1 paf 1116: }
1117: break;
1.48 paf 1118:
1.1 paf 1119: case LS_VAR_NAME_CURLY:
1.48 paf 1120: switch(c) {
1.162 parser 1121: case '[':
1.166 parser 1122: // ${name.<[>code]}
1123: push_LS(PC, LS_NAME_SQUARE_PART);
1.160 parser 1124: lexical_brackets_nestage=1;
1125: RC;
1.48 paf 1126: case '}': // ${name} finished, restoring LS
1.1 paf 1127: pop_LS(PC);
1.48 paf 1128: RC;
1129: case '.': // name part delim
1130: case '$': // name part subvar
1131: case ':': // ':name' or 'class:name'
1132: RC;
1.1 paf 1133: }
1134: break;
1.48 paf 1135:
1136: case LS_VAR_SQUARE:
1137: switch(c) {
1138: case '$':
1.166 parser 1139: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1140: RC;
1141: case '^':
1.10 paf 1142: push_LS(PC, LS_METHOD_NAME);
1.48 paf 1143: RC;
1144: case ']':
1.1 paf 1145: if(--lexical_brackets_nestage==0) {
1146: pop_LS(PC);
1.48 paf 1147: RC;
1.1 paf 1148: }
1.48 paf 1149: break;
1150: case ';': // operator_or_fmt;value delim
1151: RC;
1152: case '[':
1153: lexical_brackets_nestage++;
1154: break;
1.1 paf 1155: }
1156: break;
1.48 paf 1157:
1.1 paf 1158: case LS_VAR_CURLY:
1.48 paf 1159: switch(c) {
1160: case '$':
1.166 parser 1161: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1162: RC;
1163: case '^':
1.10 paf 1164: push_LS(PC, LS_METHOD_NAME);
1.48 paf 1165: RC;
1166: case '}':
1.1 paf 1167: if(--lexical_brackets_nestage==0) {
1168: pop_LS(PC);
1.48 paf 1169: RC;
1.1 paf 1170: }
1.48 paf 1171: break;
1172: case '{':
1.1 paf 1173: lexical_brackets_nestage++;
1.48 paf 1174: break;
1175: }
1.1 paf 1176: break;
1177:
1.10 paf 1178: // METHOD CALL
1.1 paf 1179: case LS_METHOD_NAME:
1.48 paf 1180: switch(c) {
1181: case '[':
1.166 parser 1182: // ^name.<[>code].xxx
1.162 parser 1183: if(PC.col>1/*not first column*/ && (
1.163 parser 1184: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1185: end[-1]==':'/*was class name delim */ ||
1186: end[-1]=='.'/*was name delim */
1.162 parser 1187: )) {
1.166 parser 1188: push_LS(PC, LS_NAME_SQUARE_PART);
1.162 parser 1189: lexical_brackets_nestage=1;
1190: RC;
1191: }
1.114 paf 1192: PC.ls=LS_METHOD_SQUARE;
1.1 paf 1193: lexical_brackets_nestage=1;
1.48 paf 1194: RC;
1195: case '{':
1.114 paf 1196: PC.ls=LS_METHOD_CURLY;
1.1 paf 1197: lexical_brackets_nestage=1;
1.48 paf 1198: RC;
1.69 paf 1199: case '(':
1.114 paf 1200: PC.ls=LS_METHOD_ROUND;
1.69 paf 1201: lexical_brackets_nestage=1;
1202: RC;
1.48 paf 1203: case '.': // name part delim
1204: case '$': // name part subvar
1205: case ':': // ':name' or 'class:name'
1.170 parser 1206: case '^': // ^abc^xxx wrong. bailing out
1207: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.48 paf 1208: RC;
1.1 paf 1209: }
1210: break;
1.48 paf 1211:
1212: case LS_METHOD_SQUARE:
1213: switch(c) {
1214: case '$':
1.166 parser 1215: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1216: RC;
1217: case '^':
1.10 paf 1218: push_LS(PC, LS_METHOD_NAME);
1.48 paf 1219: RC;
1220: case ';': // param delim
1221: RC;
1222: case ']':
1.1 paf 1223: if(--lexical_brackets_nestage==0) {
1.114 paf 1224: PC.ls=LS_METHOD_AFTER;
1.48 paf 1225: RC;
1.1 paf 1226: }
1.48 paf 1227: break;
1228: case '[':
1.1 paf 1229: lexical_brackets_nestage++;
1.48 paf 1230: break;
1231: }
1.1 paf 1232: break;
1.48 paf 1233:
1.1 paf 1234: case LS_METHOD_CURLY:
1.48 paf 1235: switch(c) {
1236: case '$':
1.166 parser 1237: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1238: RC;
1239: case '^':
1.10 paf 1240: push_LS(PC, LS_METHOD_NAME);
1.94 paf 1241: RC;
1242: case ';': // param delim
1.48 paf 1243: RC;
1244: case '}':
1.1 paf 1245: if(--lexical_brackets_nestage==0) {
1.114 paf 1246: PC.ls=LS_METHOD_AFTER;
1.48 paf 1247: RC;
1.1 paf 1248: }
1.48 paf 1249: break;
1250: case '{':
1.1 paf 1251: lexical_brackets_nestage++;
1.48 paf 1252: break;
1253: }
1.1 paf 1254: break;
1.48 paf 1255:
1.1 paf 1256: case LS_METHOD_AFTER:
1.69 paf 1257: if(c=='[') {/* ][ }[ )[ */
1.114 paf 1258: PC.ls=LS_METHOD_SQUARE;
1.1 paf 1259: lexical_brackets_nestage=1;
1.48 paf 1260: RC;
1.1 paf 1261: }
1.69 paf 1262: if(c=='{') {/* ]{ }{ ){ */
1.114 paf 1263: PC.ls=LS_METHOD_CURLY;
1.69 paf 1264: lexical_brackets_nestage=1;
1265: RC;
1266: }
1267: if(c=='(') {/* ]( }( )( */
1.114 paf 1268: PC.ls=LS_METHOD_ROUND;
1.1 paf 1269: lexical_brackets_nestage=1;
1.48 paf 1270: RC;
1.1 paf 1271: }
1272: pop_LS(PC);
1.114 paf 1273: PC.source--; if(--PC.col<0) { PC.line--; PC.col=-1; }
1.13 paf 1274: result=EON;
1.1 paf 1275: goto break2;
1276: }
1.9 paf 1277: if(c==0) {
1.1 paf 1278: result=-1;
1279: break;
1280: }
1281: }
1282:
1283: break2:
1.59 paf 1284: if(end!=begin) { // there is last piece?
1285: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1286: // strip last \n
1.10 paf 1287: end--;
1.137 parser 1288: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1289: end--;
1.59 paf 1290: }
1.194 paf 1291: if(end!=begin && PC.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1.59 paf 1292: // append it
1.121 paf 1293: PC.string->APPEND_CLEAN(begin, end-begin, PC.file, begin_line/*, start_col*/);
1.30 paf 1294: }
1.59 paf 1295: }
1.114 paf 1296: if(PC.string->size()) { // something accumulated?
1.17 paf 1297: // create STRING value: array of OP_VALUE+vstring
1.204.2.2! paf 1298: *lvalp=VL(ValuePtr(new VString(PC.string)));
1.10 paf 1299: // new pieces storage
1.204.2.2! paf 1300: PC.string=StringPtr(new String);
1.58 paf 1301: // make current result be pending for next call, return STRING for now
1.114 paf 1302: PC.pending_state=result; result=STRING;
1.58 paf 1303: }
1.67 paf 1304: if(skip_analized) {
1.114 paf 1305: PC.source+=skip_analized; PC.col+=skip_analized;
1.1 paf 1306: }
1.58 paf 1307: return result;
1.1 paf 1308: }
1309:
1.110 paf 1310: static int real_yyerror(parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1311: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1312: return 1;
1.110 paf 1313: }
1.1 paf 1314:
1.110 paf 1315: static void yyprint(FILE *file, int type, YYSTYPE value) {
1316: if(type==STRING)
1.204.2.2! paf 1317: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1318: }
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