Annotation of parser3/src/main/compile.y, revision 1.200
1.168 parser 1: %{
1.105 paf 2: /** @file
1.106 paf 3: Parser: compiler(lexical parser and grammar).
4:
1.87 paf 5: Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
1.168 parser 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.106 paf 7:
1.200 ! paf 8: $Id: compile.y,v 1.199 2002/10/15 08:31:56 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:
1.90 paf 22: #define YYSTYPE Array/*<Operation>*/ *
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"
1.68 paf 98: %left '!'
1.57 paf 99:
100: /* bitwise */
1.193 paf 101: %left "!|"
1.131 paf 102: %left '|'
103: %left '&'
1.68 paf 104: %left '~'
1.195 paf 105: %left ">>"
106: %left "<<"
1.57 paf 107:
1.56 paf 108: /* numerical */
1.55 paf 109: %left '-' '+'
1.173 paf 110: %left '*' '/' '%' '\\'
1.56 paf 111: %left NEG /* negation: unary - */
1.1 paf 112:
113: %%
1.195 paf 114: all:
1.10 paf 115: one_big_piece {
1.75 paf 116: Method& method=*NEW Method(POOL,
1.187 paf 117: PC.request->main_method_name,
1.122 paf 118: Method::CT_ANY,
1.81 paf 119: 0, 0, /*min, max numbered_params_count*/
1.75 paf 120: 0/*param_names*/, 0/*local_names*/,
121: $1/*parser_code*/, 0/*native_code*/);
1.187 paf 122: PC.cclass->add_method(PC.request->main_method_name, method);
1.10 paf 123: }
124: | methods;
125:
126: methods: method | methods method;
127: one_big_piece: maybe_codes;
128:
1.34 paf 129: method: control_method | code_method;
130:
131: control_method: '@' STRING '\n'
1.132 paf 132: maybe_control_strings {
1.120 paf 133: const String& command=*LA2S($2);
1.34 paf 134: YYSTYPE strings_code=$4;
1.37 paf 135: if(strings_code->size()<1*2) {
1.114 paf 136: strcpy(PC.error, "@");
137: strcat(PC.error, command.cstr());
138: strcat(PC.error, " is empty");
1.37 paf 139: YYERROR;
140: }
1.74 paf 141: if(command==CLASS_NAME) {
1.188 paf 142: if(PC.cclass->base_class()) { // already changed from default?
1.114 paf 143: strcpy(PC.error, "class already have a name '");
144: strncat(PC.error, PC.cclass->name().cstr(), 100);
145: strcat(PC.error, "'");
1.73 paf 146: YYERROR;
147: }
148: if(strings_code->size()==1*2) {
149: // new class' name
1.120 paf 150: const String *name=LA2S(strings_code);
1.73 paf 151: // creating the class
1.114 paf 152: PC.cclass=NEW VClass(POOL);
153: PC.cclass->set_name(*name);
1.73 paf 154: // append to request's classes
1.114 paf 155: PC.request->classes().put(*name, PC.cclass);
1.73 paf 156: } else {
1.114 paf 157: strcpy(PC.error, "@"CLASS_NAME" must contain sole name");
1.34 paf 158: YYERROR;
159: }
1.130 paf 160: } else if(command==USE_CONTROL_METHOD_NAME) {
161: for(int i=0; i<strings_code->size(); i+=2)
1.198 paf 162: PC.request->use_file(PC.request->main_class, *LA2S(strings_code, i));
1.130 paf 163: } else if(command==BASE_NAME) {
1.188 paf 164: if(PC.cclass->base_class()) { // already changed from default?
1.130 paf 165: strcpy(PC.error, "class already have a base '");
1.188 paf 166: strncat(PC.error, PC.cclass->base_class()->name().cstr(), 100);
1.130 paf 167: strcat(PC.error, "'");
168: YYERROR;
169: }
170: if(strings_code->size()==1*2) {
171: const String& base_name=*LA2S(strings_code);
1.189 paf 172: Value *vbase_class=static_cast<VClass *>(
1.130 paf 173: PC.request->classes().get(base_name));
1.189 paf 174: VStateless_class *base_class=vbase_class?vbase_class->get_class():0;
175: if(!base_class) {
1.130 paf 176: strcpy(PC.error, base_name.cstr());
177: strcat(PC.error, ": undefined class in @"BASE_NAME);
1.73 paf 178: YYERROR;
179: }
1.130 paf 180: // @CLASS == @BASE sanity check
1.189 paf 181: if(PC.cclass==base_class) {
1.130 paf 182: strcpy(PC.error, "@"CLASS_NAME" equals @"BASE_NAME);
1.45 paf 183: YYERROR;
1.34 paf 184: }
1.189 paf 185: PC.cclass->set_base(base_class);
1.34 paf 186: } else {
1.130 paf 187: strcpy(PC.error, "@"BASE_NAME" must contain sole name");
1.34 paf 188: YYERROR;
189: }
1.130 paf 190: } else {
191: strcpy(PC.error, "'");
192: strncat(PC.error, command.cstr(), MAX_STRING/2);
193: strcat(PC.error, "' invalid special name. valid names are "
194: "'"CLASS_NAME"', '"USE_CONTROL_METHOD_NAME"' and '"BASE_NAME"'");
195: YYERROR;
1.34 paf 196: }
197: };
1.132 paf 198: maybe_control_strings: empty | control_strings;
1.37 paf 199: control_strings: control_string | control_strings control_string { $$=$1; P($$, $2) };
200: control_string: maybe_string '\n';
201: maybe_string: empty | STRING;
1.34 paf 202:
203: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n'
1.10 paf 204: maybe_codes {
1.120 paf 205: const String *name=LA2S($2);
1.10 paf 206:
207: YYSTYPE params_names_code=$3;
1.75 paf 208: Array *params_names=0;
209: if(int size=params_names_code->size()) {
210: params_names=NEW Array(POOL);
211: for(int i=0; i<size; i+=2)
1.120 paf 212: *params_names+=LA2S(params_names_code, i);
1.75 paf 213: }
1.10 paf 214:
215: YYSTYPE locals_names_code=$4;
1.75 paf 216: Array *locals_names=0;
217: if(int size=locals_names_code->size()) {
218: locals_names=NEW Array(POOL);
219: for(int i=0; i<size; i+=2)
1.120 paf 220: *locals_names+=LA2S(locals_names_code, i);
1.75 paf 221: }
1.10 paf 222:
1.76 paf 223: Method& method=*NEW Method(POOL,
224: *name,
1.122 paf 225: Method::CT_ANY,
1.81 paf 226: 0, 0/*min,max numbered_params_count*/,
1.76 paf 227: params_names, locals_names,
228: $7, 0);
1.114 paf 229: PC.cclass->add_method(*name, method);
1.8 paf 230: };
1.10 paf 231:
232: maybe_bracketed_strings: empty | bracketed_maybe_strings;
233: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
234: maybe_strings: empty | strings;
235: strings: STRING | strings ';' STRING { $$=$1; P($$, $3) };
236:
237: maybe_comment: empty | STRING;
1.1 paf 238:
239: /* codes */
240:
1.10 paf 241: maybe_codes: empty | codes;
242:
1.90 paf 243: codes: code | codes code { $$=$1; P($$, $2) };
1.81 paf 244: code: write_string | action;
1.149 parser 245: action: get | put | call;
1.1 paf 246:
247: /* get */
248:
1.64 paf 249: get: get_value {
1.184 paf 250: $$=$1; /* stack: resulting value */
251: changetail_or_append($$,
1.186 paf 252: OP_GET_ELEMENT, false, /*->*/OP_GET_ELEMENT__WRITE,
253: /*or */OP_WRITE_VALUE
1.184 paf 254: ); /* value=pop; wcontext.write(value) */
1.1 paf 255: };
1.163 parser 256: get_value: '$' get_name_value { $$=$2 };
1.64 paf 257: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 258: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 259: name_without_curly_rdive:
260: name_without_curly_rdive_read
261: | name_without_curly_rdive_class;
1.19 paf 262: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.25 paf 263: $$=N(POOL);
1.22 paf 264: Array *diving_code=$1;
1.120 paf 265: const String *first_name=LA2S(diving_code);
1.179 paf 266: // self.xxx... -> xxx...
267: // OP_VALUE+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 268: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.54 paf 269: O($$, OP_WITH_SELF); /* stack: starting context */
1.22 paf 270: P($$, diving_code,
271: /* skip over... */
1.179 paf 272: diving_code->size()>=3?3/*OP_VALUE+string+OP_GET_ELEMENTx*/:2/*OP_+string*/);
1.22 paf 273: } else {
1.54 paf 274: O($$, OP_WITH_READ); /* stack: starting context */
1.179 paf 275:
1.196 paf 276: // OP_VALUE+string+OP_GET_ELEMENT. -> OP_VALUE+string+...OR_OPERATOR/OR_JUNCTION_EXP.
1.199 paf 277: if(diving_code->size()==3) // ELEMENT without .SUBELEMENT
1.196 paf 278: diving_code->put_int(2,
1.199 paf 279: PC.in_call_value?
280: OP_GET_ELEMENT_OR_OPERATOR// possibly ^if [search for operator]
281: :OP_GET_ELEMENT_OR_JUNCTION_EXPAND // possibly $junction [if junction, expand it]
282: );
1.196 paf 283:
1.22 paf 284: P($$, diving_code);
285: }
286: /* diving code; stack: current context */
1.1 paf 287: };
1.155 parser 288: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P($$, $2) };
1.19 paf 289: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P($$, $2) };
1.1 paf 290:
291: /* put */
292:
1.81 paf 293: put: '$' name_expr_wdive construct {
1.20 paf 294: $$=$2; /* stack: context,name */
1.52 paf 295: P($$, $3); /* stack: context,name,constructor_value */
1.20 paf 296: };
1.44 paf 297: name_expr_wdive:
1.157 parser 298: name_expr_wdive_root
299: | name_expr_wdive_write
1.44 paf 300: | name_expr_wdive_class;
1.157 parser 301: name_expr_wdive_root: name_expr_dive_code {
1.44 paf 302: $$=N(POOL);
1.23 paf 303: Array *diving_code=$1;
1.120 paf 304: const String *first_name=LA2S(diving_code);
1.179 paf 305: // $self.xxx... -> $xxx...
306: // OP_VALUE+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 307: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.54 paf 308: O($$, OP_WITH_SELF); /* stack: starting context */
1.23 paf 309: P($$, diving_code,
310: /* skip over... */
1.179 paf 311: diving_code->size()>=3?3/*OP_VALUE+string+OP_GET_ELEMENTx*/:2/*OP_+string*/);
1.23 paf 312: } else {
1.157 parser 313: O($$, OP_WITH_ROOT); /* stack: starting context */
1.23 paf 314: P($$, diving_code);
315: }
316: /* diving code; stack: current context */
1.156 parser 317: };
1.157 parser 318: name_expr_wdive_write: '.' name_expr_dive_code {
1.156 parser 319: $$=N(POOL);
1.157 parser 320: O($$, OP_WITH_WRITE); /* stack: starting context */
1.156 parser 321: P($$, $2); /* diving code; stack: context,name */
1.20 paf 322: };
1.155 parser 323: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P($$, $2) };
1.20 paf 324:
1.149 parser 325: construct:
1.163 parser 326: construct_square
327: | construct_round
328: | construct_curly
1.149 parser 329: ;
330: construct_square: '[' any_constructor_code_value ']' {
331: // stack: context, name
332: $$=$2; // stack: context, name, value
1.81 paf 333: O($$, OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
334: }
335: ;
1.149 parser 336: construct_round: '(' expr_value ')' {
1.182 paf 337: $$=N(POOL);
338: O($$, OP_PREPARE_TO_EXPRESSION);
1.149 parser 339: // stack: context, name
1.182 paf 340: P($$, $2); // stack: context, name, value
1.163 parser 341: O($$, OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 342: }
1.52 paf 343: ;
1.149 parser 344: construct_curly: '{' maybe_codes '}' {
345: // stack: context, name
346: $$=N(POOL);
1.186 paf 347: OA($$, OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 348: };
349:
1.55 paf 350: any_constructor_code_value:
1.157 parser 351: void_value /* optimized $var[] case */
1.52 paf 352: | STRING /* optimized $var[STRING] case */
1.55 paf 353: | constructor_code_value /* $var[something complex] */
1.1 paf 354: ;
1.55 paf 355: constructor_code_value: constructor_code {
1.25 paf 356: $$=N(POOL);
1.186 paf 357: OA($$, OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 358: /* some code that writes to that context */
359: /* context=pop; stack: context.value() */
1.1 paf 360: };
1.55 paf 361: constructor_code: codes__excluding_sole_str_literal;
1.27 paf 362: codes__excluding_sole_str_literal: action | code codes { $$=$1; P($$, $2) };
363:
1.1 paf 364: /* call */
365:
1.66 paf 366: call: call_value {
367: $$=$1; /* stack: value */
1.185 paf 368: changetail_or_append($$,
1.186 paf 369: OP_CALL, true, /*->*/ OP_CALL__WRITE,
370: /*or */OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.66 paf 371: };
1.177 paf 372: call_value: '^' {
1.180 paf 373: PC.in_call_value=true;
1.177 paf 374: }
375: call_name {
1.180 paf 376: PC.in_call_value=false;
1.177 paf 377: }
1.154 parser 378: store_params EON { /* ^field.$method{vasya} */
379: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 380:
1.154 parser 381: YYSTYPE params_code=$5;
1.186 paf 382: if(params_code->size()==3) { // probably [] case. [OP_VALUE + Void + STORE_PARAM]
1.123 paf 383: if(Value *value=LA2V(params_code)) // it is OP_VALUE + value?
1.140 parser 384: if(!value->is_defined()) // value is VVoid?
1.123 paf 385: params_code=0; // ^zzz[] case. don't append lone empty param.
1.186 paf 386: }
387: /* stack: context, method_junction */
388: OA($$, OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
1.1 paf 389: };
390:
1.43 paf 391: call_name: name_without_curly_rdive;
1.38 paf 392:
1.9 paf 393: store_params: store_param | store_params store_param { $$=$1; P($$, $2) };
1.69 paf 394: store_param:
395: store_square_param
396: | store_round_param
397: | store_curly_param
1.31 paf 398: ;
1.123 paf 399: store_square_param: '[' store_code_param_parts ']' {$$=$2};
1.69 paf 400: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 401: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 402: store_code_param_parts:
403: store_code_param_part
404: | store_code_param_parts ';' store_code_param_part { $$=$1; P($$, $3) }
405: ;
406: store_expr_param_parts:
407: store_expr_param_part
408: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P($$, $3) }
409: ;
1.94 paf 410: store_curly_param_parts:
411: store_curly_param_part
412: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P($$, $3) }
413: ;
1.120 paf 414: store_code_param_part: code_param_value {
1.32 paf 415: $$=$1;
1.54 paf 416: O($$, OP_STORE_PARAM);
1.120 paf 417: };
1.69 paf 418: store_expr_param_part: write_expr_value {
419: $$=N(POOL);
1.186 paf 420: OA($$, OP_EXPR_CODE__STORE_PARAM, $1);
1.69 paf 421: };
1.94 paf 422: store_curly_param_part: maybe_codes {
423: $$=N(POOL);
1.186 paf 424: OA($$, OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 425: };
1.120 paf 426: code_param_value:
1.157 parser 427: void_value /* optimized [;...] case */
1.120 paf 428: | STRING /* optimized [STRING] case */
429: | constructor_code_value /* [something complex] */
430: ;
1.90 paf 431: write_expr_value: expr_value {
1.182 paf 432: $$=N(POOL);
433: O($$, OP_PREPARE_TO_EXPRESSION);
434: P($$, $1);
1.102 paf 435: O($$, OP_WRITE_EXPR_RESULT);
1.69 paf 436: };
1.1 paf 437:
438: /* name */
439:
1.20 paf 440: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P($$, $2) };
1.1 paf 441:
1.9 paf 442: name_path: name_step | name_path name_step { $$=$1; P($$, $2) };
1.1 paf 443: name_step: name_advance1 '.';
444: name_advance1: name_expr_value {
1.177 paf 445: // we know that name_advance1 not called from ^xxx context
446: // so we'll not check for operator call possibility as we do in name_advance2
447:
1.1 paf 448: /* stack: context */
449: $$=$1; /* stack: context,name */
1.54 paf 450: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 451: };
452: name_advance2: name_expr_value {
453: /* stack: context */
454: $$=$1; /* stack: context,name */
1.179 paf 455: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 456: }
1.4 paf 457: | STRING BOGUS
1.1 paf 458: ;
459: name_expr_value:
1.4 paf 460: STRING /* subname_is_const */
1.1 paf 461: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 462: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 463: | name_square_code_value /* [codes] */
1.1 paf 464: ;
465: name_expr_subvar_value: '$' subvar_ref_name_rdive {
466: $$=$2;
1.54 paf 467: O($$, OP_GET_ELEMENT);
1.1 paf 468: };
1.4 paf 469: name_expr_with_subvar_value: STRING subvar_get_writes {
1.183 paf 470: Array *code;
471: {
472: change_string_literal_to_write_string_literal(code=$1);
473: P(code, $2);
474: }
1.25 paf 475: $$=N(POOL);
1.186 paf 476: OA($$, OP_STRING_POOL, code);
1.1 paf 477: };
1.166 parser 478: name_square_code_value: '[' codes ']' {
1.160 parser 479: $$=N(POOL);
1.186 paf 480: OA($$, OP_OBJECT_POOL, $2); /* stack: empty write context */
1.183 paf 481: /* some code that writes to that context */
482: /* context=pop; stack: context.value() */
1.160 parser 483: };
1.154 parser 484: subvar_ref_name_rdive: STRING {
1.25 paf 485: $$=N(POOL);
1.54 paf 486: O($$, OP_WITH_READ);
1.9 paf 487: P($$, $1);
1.1 paf 488: };
1.9 paf 489: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P($$, $2) };
1.1 paf 490: subvar__get_write: '$' subvar_ref_name_rdive {
491: $$=$2;
1.54 paf 492: O($$, OP_GET_ELEMENT__WRITE);
1.42 paf 493: };
494:
1.154 parser 495: class_prefix:
496: class_static_prefix
497: | class_constructor_prefix
498: ;
1.155 parser 499: class_static_prefix: STRING ':' {
500: $$=$1; // stack: class name string
1.189 paf 501: if(*LA2S($$) == BASE_NAME) { // pseude BASE class
502: if(VStateless_class *base=PC.cclass->base_class()) {
503: change_string_literal_value($$, base->name());
504: } else {
505: strcpy(PC.error, "no base class declared");
506: YYERROR;
507: }
508: }
1.155 parser 509: O($$, OP_GET_CLASS);
510: };
511: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 512: $$=$1;
1.180 paf 513: if(!PC.in_call_value) {
1.154 parser 514: strcpy(PC.error, ":: not allowed here");
515: YYERROR;
516: }
1.155 parser 517: O($$, OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 518: };
519:
1.53 paf 520:
1.56 paf 521: /* expr */
1.53 paf 522:
1.81 paf 523: expr_value: expr {
1.182 paf 524: // see OP_PREPARE_TO_EXPRESSION!!
1.81 paf 525: if(($$=$1)->size()==2) // only one string literal in there?
1.62 paf 526: change_string_literal_to_double_literal($$); // make that string literal Double
527: };
1.56 paf 528: expr:
1.62 paf 529: STRING
1.64 paf 530: | get_value
1.66 paf 531: | call_value
1.64 paf 532: | '"' string_inside_quotes_value '"' { $$ = $2; }
1.145 parser 533: | '\'' string_inside_quotes_value '\'' { $$ = $2; }
1.60 paf 534: | '(' expr ')' { $$ = $2; }
535: /* stack: operand // stack: @operand */
536: | '-' expr %prec NEG { $$=$2; O($$, OP_NEG) }
1.166 parser 537: | '+' expr %prec NEG { $$=$2 }
1.68 paf 538: | '~' expr { $$=$2; O($$, OP_INV) }
539: | '!' expr { $$=$2; O($$, OP_NOT) }
540: | "def" expr { $$=$2; O($$, OP_DEF) }
541: | "in" expr { $$=$2; O($$, OP_IN) }
542: | "-f" expr { $$=$2; O($$, OP_FEXISTS) }
1.127 paf 543: | "-d" expr { $$=$2; O($$, OP_DEXISTS) }
1.60 paf 544: /* stack: a,b // stack: a@b */
545: | expr '-' expr { $$=$1; P($$, $3); O($$, OP_SUB) }
546: | expr '+' expr { $$=$1; P($$, $3); O($$, OP_ADD) }
547: | expr '*' expr { $$=$1; P($$, $3); O($$, OP_MUL) }
548: | expr '/' expr { $$=$1; P($$, $3); O($$, OP_DIV) }
549: | expr '%' expr { $$=$1; P($$, $3); O($$, OP_MOD) }
1.173 paf 550: | expr '\\' expr { $$=$1; P($$, $3); O($$, OP_INTDIV) }
1.195 paf 551: | expr "<<" expr { $$=$1; P($$, $3); O($$, OP_BIN_SL) }
552: | expr ">>" expr { $$=$1; P($$, $3); O($$, OP_BIN_SR) }
1.60 paf 553: | expr '&' expr { $$=$1; P($$, $3); O($$, OP_BIN_AND) }
554: | expr '|' expr { $$=$1; P($$, $3); O($$, OP_BIN_OR) }
1.193 paf 555: | expr "!|" expr { $$=$1; P($$, $3); O($$, OP_BIN_XOR) }
1.186 paf 556: | expr "&&" expr { $$=$1; OA($$, OP_NESTED_CODE, $3); O($$, OP_LOG_AND) }
557: | expr "||" expr { $$=$1; OA($$, OP_NESTED_CODE, $3); O($$, OP_LOG_OR) }
1.193 paf 558: | expr "!||" expr { $$=$1; P($$, $3); O($$, OP_LOG_XOR) }
1.60 paf 559: | expr '<' expr { $$=$1; P($$, $3); O($$, OP_NUM_LT) }
560: | expr '>' expr { $$=$1; P($$, $3); O($$, OP_NUM_GT) }
561: | expr "<=" expr { $$=$1; P($$, $3); O($$, OP_NUM_LE) }
562: | expr ">=" expr { $$=$1; P($$, $3); O($$, OP_NUM_GE) }
563: | expr "==" expr { $$=$1; P($$, $3); O($$, OP_NUM_EQ) }
564: | expr "!=" expr { $$=$1; P($$, $3); O($$, OP_NUM_NE) }
1.61 paf 565: | expr "lt" expr { $$=$1; P($$, $3); O($$, OP_STR_LT) }
566: | expr "gt" expr { $$=$1; P($$, $3); O($$, OP_STR_GT) }
567: | expr "le" expr { $$=$1; P($$, $3); O($$, OP_STR_LE) }
568: | expr "ge" expr { $$=$1; P($$, $3); O($$, OP_STR_GE) }
569: | expr "eq" expr { $$=$1; P($$, $3); O($$, OP_STR_EQ) }
570: | expr "ne" expr { $$=$1; P($$, $3); O($$, OP_STR_NE) }
1.95 paf 571: | expr "is" expr { $$=$1; P($$, $3); O($$, OP_IS) }
1.56 paf 572: ;
1.55 paf 573:
1.65 paf 574: string_inside_quotes_value: maybe_codes {
1.64 paf 575: $$=N(POOL);
1.186 paf 576: OA($$, OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 577: /* some code that writes to that context */
578: /* context=pop; stack: context.get_string() */
1.53 paf 579: };
1.1 paf 580:
1.27 paf 581: /* basics */
1.1 paf 582:
1.81 paf 583: write_string: STRING {
1.102 paf 584: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
1.84 paf 585: change_string_literal_to_write_string_literal($$=$1)
1.54 paf 586: };
587:
1.157 parser 588: void_value: /* empty */ { $$=VL(NEW VVoid(POOL)) };
1.25 paf 589: empty: /* empty */ { $$=N(POOL) };
1.1 paf 590:
591: %%
1.105 paf 592: #endif
1.1 paf 593:
594: /*
595: 000$111(2222)00
596: 000$111{3333}00
1.9 paf 597: $,^: push,=0
1.1 paf 598: 1:( { break=pop
599: 2:( ) pop
600: 3:{ } pop
601:
602: 000^111(2222)4444{33333}4000
1.9 paf 603: $,^: push,=0
1.1 paf 604: 1:( { break=pop
605: 2:( )=4
606: 3:{ }=4
607: 4:[^({]=pop
608: */
609:
1.110 paf 610: static int yylex(YYSTYPE *lvalp, void *pc) {
1.177 paf 611: #define lexical_brackets_nestage PC.brackets_nestages[PC.ls_sp]
1.48 paf 612: #define RC {result=c; goto break2; }
1.1 paf 613:
614: register int c;
615: int result;
616:
1.114 paf 617: if(PC.pending_state) {
618: result=PC.pending_state;
619: PC.pending_state=0;
1.1 paf 620: return result;
621: }
622:
1.114 paf 623: const char *begin=PC.source;
1.91 paf 624: const char *end;
1.114 paf 625: int begin_line=PC.line;
1.67 paf 626: int skip_analized=0;
1.50 paf 627: while(true) {
1.114 paf 628: c=*(end=(PC.source++));
1.166 parser 629: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, PC.sp);
1.1 paf 630:
1.4 paf 631: if(c=='\n') {
1.114 paf 632: PC.line++;
633: PC.col=0;
1.10 paf 634: } else
1.114 paf 635: PC.col++;
1.73 paf 636:
1.171 parser 637: if(c=='@' && PC.col==0+1) {
1.175 paf 638: if(PC.ls==LS_DEF_SPECIAL_BODY) {
639: // @SPECIAL
640: // ...
641: // @<here =
642: pop_LS(PC); // exiting from LS_DEF_SPECIAL_BODY state
643: } // continuing checks
1.171 parser 644: if(PC.ls==LS_USER) {
645: push_LS(PC, LS_DEF_NAME);
646: RC;
1.175 paf 647: } else // @ in first column inside some code [when could that be?]
1.171 parser 648: result=BAD_METHOD_DECL_START;
649: goto break2;
650: } else if(c=='^')
1.169 parser 651: switch(PC.ls) {
652: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
653: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
654: case LS_VAR_NAME_SIMPLE_WITH_COLON:
655: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
656: case LS_VAR_NAME_CURLY:
657: case LS_METHOD_NAME:
1.194 paf 658: case LS_USER_COMMENT:
1.169 parser 659: case LS_DEF_COMMENT:
660: // no literals in names, please
661: break;
662: default:
1.114 paf 663: switch(*PC.source) {
1.165 parser 664: // ^escaping some punctuators
1.48 paf 665: case '^': case '$': 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
1.164 parser 675: end=begin=PC.source; // ^
1.114 paf 676: begin_line=PC.line;
1.164 parser 677: if(PC.ls==LS_METHOD_AFTER) {
678: pop_LS(PC);
679: result=EON;
1.165 parser 680: skip_analized=-1; // return to ^ afterwards to assure it's literality
1.164 parser 681: goto break2;
682: } else {
683: // skip over _ after ^
684: PC.source++; PC.col++;
685: // skip analysis = forced literal
686: continue;
687: }
1.114 paf 688:
689: // converting ^#HH into char(hex(HH))
690: case '#':
691: if(end!=begin) {
692: // append piece till ^
1.121 paf 693: PC.string->APPEND_CLEAN(begin, end-begin, PC.file, begin_line);
1.114 paf 694: }
695: // #HH ?
696: if(PC.source[0]=='#' && PC.source[1] && PC.source[2]) {
697: char *hex=(char *)POOL.malloc(1);
698: hex[0]=
699: hex_value[(unsigned char)PC.source[1]]*0x10+
700: hex_value[(unsigned char)PC.source[2]];
701: if(hex[0]==0) {
702: result=BAD_HEX_LITERAL;
703: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
704: }
705: // append char(hex(HH))
1.121 paf 706: PC.string->APPEND_CLEAN(hex, 1, PC.file, begin_line);
1.114 paf 707: // skip over ^#HH
708: PC.source+=3;
709: PC.col+=3;
710: // reset piece 'begin' position & line
711: begin=PC.source; // ^
712: begin_line=PC.line;
713: continue;
714: }
715: break;
1.1 paf 716: }
1.169 parser 717: break;
718: }
1.113 paf 719: // #comment start skipping
1.114 paf 720: if(c=='#' && PC.col==1) {
1.112 paf 721: if(end!=begin) {
722: // append piece till #
1.121 paf 723: PC.string->APPEND_CLEAN(begin, end-begin, PC.file, begin_line);
1.112 paf 724: }
725: // fall into COMMENT lexical state [wait for \n]
1.194 paf 726: push_LS(PC, LS_USER_COMMENT);
1.175 paf 727: continue;
1.112 paf 728: }
1.114 paf 729: switch(PC.ls) {
1.10 paf 730:
731: // USER'S = NOT OURS
1.1 paf 732: case LS_USER:
1.166 parser 733: case LS_NAME_SQUARE_PART: // name.[here].xxx
1.153 parser 734: if(PC.trim_bof)
735: switch(c) {
736: case '\n': case ' ': case '\t':
1.152 parser 737: begin=PC.source;
738: begin_line=PC.line;
739: continue; // skip it
1.153 parser 740: default:
741: PC.trim_bof=false;
1.152 parser 742: }
1.48 paf 743: switch(c) {
744: case '$':
1.166 parser 745: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 746: RC;
747: case '^':
748: push_LS(PC, LS_METHOD_NAME);
749: RC;
1.166 parser 750: case ']':
751: if(PC.ls==LS_NAME_SQUARE_PART)
752: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
753: pop_LS(PC); // $name.[co<]>de<]!>
754: RC;
755: }
1.160 parser 756: break;
1.166 parser 757: case '[': // $name.[co<[>de]
758: if(PC.ls==LS_NAME_SQUARE_PART)
759: lexical_brackets_nestage++;
1.161 parser 760: break;
1.112 paf 761: }
762: break;
763:
764: // #COMMENT
1.194 paf 765: case LS_USER_COMMENT:
1.112 paf 766: if(c=='\n') {
767: // skip comment
1.114 paf 768: begin=PC.source;
769: begin_line=PC.line;
1.112 paf 770:
771: pop_LS(PC);
772: continue;
1.1 paf 773: }
1.48 paf 774: break;
775:
776: // STRING IN EXPRESSION
1.145 parser 777: case LS_EXPRESSION_STRING_QUOTED:
778: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 779: switch(c) {
780: case '"':
1.145 parser 781: case '\'':
782: if(
783: PC.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
784: PC.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
785: pop_LS(PC); //"abc". | 'abc'.
786: RC;
787: }
788: break;
1.48 paf 789: case '$':
1.166 parser 790: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 791: RC;
792: case '^':
1.10 paf 793: push_LS(PC, LS_METHOD_NAME);
1.48 paf 794: RC;
1.10 paf 795: }
796: break;
797:
798: // METHOD DEFINITION
799: case LS_DEF_NAME:
1.48 paf 800: switch(c) {
801: case '[':
1.114 paf 802: PC.ls=LS_DEF_PARAMS;
1.48 paf 803: RC;
804: case '\n':
1.114 paf 805: PC.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 806: RC;
1.10 paf 807: }
808: break;
1.48 paf 809:
1.10 paf 810: case LS_DEF_PARAMS:
1.48 paf 811: switch(c) {
1.192 paf 812: case '$': // common error
1.193 paf 813: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
814: goto break2;
1.48 paf 815: case ';':
816: RC;
817: case ']':
1.114 paf 818: PC.ls=*PC.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 819: RC;
1.49 paf 820: case '\n': // wrong. bailing out
1.10 paf 821: pop_LS(PC);
1.48 paf 822: RC;
1.10 paf 823: }
824: break;
1.48 paf 825:
1.10 paf 826: case LS_DEF_LOCALS:
1.48 paf 827: switch(c) {
828: case '[':
829: case ';':
830: RC;
831: case ']':
1.114 paf 832: PC.ls=LS_DEF_COMMENT;
1.48 paf 833: RC;
834: case '\n': // wrong. bailing out
1.10 paf 835: pop_LS(PC);
1.48 paf 836: RC;
1.10 paf 837: }
838: break;
1.48 paf 839:
1.10 paf 840: case LS_DEF_COMMENT:
841: if(c=='\n') {
842: pop_LS(PC);
1.48 paf 843: RC;
1.37 paf 844: }
845: break;
846:
1.48 paf 847: case LS_DEF_SPECIAL_BODY:
1.175 paf 848: if(c=='\n')
1.48 paf 849: RC;
850: break;
851:
852: // (EXPRESSION)
1.69 paf 853: case LS_VAR_ROUND:
854: case LS_METHOD_ROUND:
1.48 paf 855: switch(c) {
856: case ')':
857: if(--lexical_brackets_nestage==0)
1.114 paf 858: if(PC.ls==LS_METHOD_ROUND) // method round param ended
859: PC.ls=LS_METHOD_AFTER; // look for method end
860: else // PC.ls==LS_VAR_ROUND // variable constructor ended
1.69 paf 861: pop_LS(PC); // return to normal life
1.48 paf 862: RC;
1.194 paf 863: case '#': // comment start skipping
864: if(end!=begin) {
865: // append piece till #
866: PC.string->APPEND_CLEAN(begin, end-begin, PC.file, begin_line);
867: }
868: // fall into COMMENT lexical state [wait for \n]
869: push_LS(PC, LS_EXPRESSION_COMMENT);
870: lexical_brackets_nestage=1;
871: continue;
1.48 paf 872: case '$':
1.166 parser 873: push_LS(PC, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 874: RC;
875: case '^':
876: push_LS(PC, LS_METHOD_NAME);
877: RC;
878: case '(':
879: lexical_brackets_nestage++;
880: RC;
1.67 paf 881: case '-':
1.127 paf 882: switch(*PC.source) {
883: case 'f': // -f
1.67 paf 884: skip_analized=1;
885: result=FEXISTS;
1.127 paf 886: goto break2;
887: case 'd': // -d
888: skip_analized=1;
889: result=DEXISTS;
890: goto break2;
1.191 paf 891: default: // minus
1.67 paf 892: result=c;
1.127 paf 893: goto break2;
894: }
1.67 paf 895: goto break2;
1.173 paf 896: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 897: case '~':
1.48 paf 898: case ';':
899: RC;
1.193 paf 900: case '&': case '|':
1.114 paf 901: if(*PC.source==c) { // && ||
1.193 paf 902: result=c=='&'?LAND:LOR;
1.67 paf 903: skip_analized=1;
1.58 paf 904: } else
905: result=c;
906: goto break2;
1.193 paf 907: case '!':
908: switch(PC.source[0]) {
909: case '|': // !| !||
910: skip_analized=1;
911: if(PC.source[1]=='|') {
912: skip_analized++;
913: result=LXOR;
914: } else
915: result=NXOR;
916: goto break2;
917: case '=': // !=
918: skip_analized=1;
919: result=NNE;
920: goto break2;
921: }
922: RC;
1.195 paf 923:
924: case '<': // <<, <=, <
925: switch(*PC.source) {
926: case '<': // <[<]
927: skip_analized=1; result=NSL; break;
928: case '=': // <[=]
929: skip_analized=1; result=NLE; break;
930: default: // <[]
931: result=c; break;
932: }
933: goto break2;
934: case '>': // >>, >=, >
935: switch(*PC.source) {
936: case '>': // >[>]
937: skip_analized=1; result=NSR; break;
938: case '=': // >[=]
939: skip_analized=1; result=NGE; break;
940: default: // >[]
941: result=c; break;
942: }
943: goto break2;
944: case '=': // ==
945: switch(*PC.source) {
946: case '=': // =[=]
947: skip_analized=1; result=NEQ; break;
948: default: // =[]
949: result=c; break; // not used now
950: }
1.58 paf 951: goto break2;
1.195 paf 952:
1.48 paf 953: case '"':
1.145 parser 954: push_LS(PC, LS_EXPRESSION_STRING_QUOTED);
955: RC;
956: case '\'':
957: push_LS(PC, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 958: RC;
1.50 paf 959: case 'l': case 'g': case 'e': case 'n':
1.51 paf 960: if(end==begin) // right after whitespace
1.117 paf 961: if(isspace(PC.source[1])) {
962: switch(*PC.source) {
963: // case '?': // ok [and bad cases, yacc would bark at them]
964: case 't': // lt gt [et nt]
965: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
966: skip_analized=1;
967: goto break2;
968: case 'e': // le ge ne [ee]
969: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
970: skip_analized=1;
971: goto break2;
972: case 'q': // eq [lq gq nq]
973: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
974: skip_analized=1;
975: goto break2;
976: }
1.67 paf 977: }
978: break;
979: case 'i':
980: if(end==begin) // right after whitespace
1.117 paf 981: if(isspace(PC.source[1])) {
982: switch(PC.source[0]) {
983: case 'n': // in
1.95 paf 984: skip_analized=1;
985: result=IN;
986: goto break2;
1.117 paf 987: case 's': // is
1.95 paf 988: skip_analized=1;
989: result=IS;
990: goto break2;
991: }
1.67 paf 992: }
993: break;
994: case 'd':
995: if(end==begin) // right after whitespace
1.114 paf 996: if(PC.source[0]=='e' && PC.source[1]=='f') { // def
1.67 paf 997: skip_analized=2;
998: result=DEF;
1.58 paf 999: goto break2;
1.50 paf 1000: }
1.48 paf 1001: break;
1002: case ' ': case '\t': case '\n':
1.63 paf 1003: if(end!=begin) { // there were a string after previous operator?
1004: result=0; // return that string
1005: goto break2;
1.48 paf 1006: }
1.63 paf 1007: // that's a leading|traling space or after-operator-space
1008: // ignoring it
1009: // reset piece 'begin' position & line
1.114 paf 1010: begin=PC.source; // after whitespace char
1011: begin_line=PC.line;
1.48 paf 1012: continue;
1.1 paf 1013: }
1014: break;
1.194 paf 1015: case LS_EXPRESSION_COMMENT:
1016: if(c=='(')
1017: lexical_brackets_nestage++;
1018:
1019: switch(*PC.source) {
1020: case '\n': case ')':
1021: if(*PC.source==')')
1022: if(--lexical_brackets_nestage!=0)
1023: continue;
1024:
1025: // skip comment
1026: begin=PC.source;
1027: begin_line=PC.line;
1028:
1029: pop_LS(PC);
1030: continue;
1031: }
1032: break;
1.1 paf 1033:
1.10 paf 1034: // VARIABLE GET/PUT/WITH
1.166 parser 1035: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1036: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1037: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1038: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1039: if(
1040: PC.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1041: PC.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1042: // name in expr ends also before
1.48 paf 1043: switch(c) {
1.181 paf 1044: // expression minus
1.92 paf 1045: case '-':
1.181 paf 1046: // expression integer division
1047: case '\\':
1.48 paf 1048: pop_LS(PC);
1.114 paf 1049: PC.source--; if(--PC.col<0) { PC.line--; PC.col=-1; }
1.48 paf 1050: result=EON;
1051: goto break2;
1052: }
1053: }
1.166 parser 1054: if(
1055: PC.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1056: PC.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1057: // name already has ':', stop before next
1058: switch(c) {
1059: case ':':
1060: pop_LS(PC);
1061: PC.source--; if(--PC.col<0) { PC.line--; PC.col=-1; }
1062: result=EON;
1063: goto break2;
1064: }
1065: }
1.48 paf 1066: switch(c) {
1067: case 0:
1068: case ' ': case '\t': case '\n':
1069: case ';':
1.126 paf 1070: case ']': case '}': case ')':
1071: case '"': case '\'':
1.139 parser 1072: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1073: case '+': case '*': case '/': case '%':
1074: case '&': case '|':
1075: case '=': case '!':
1.99 paf 1076: // common delimiters
1.190 paf 1077: case ',': case '?': case '#':
1.139 parser 1078: // before call
1079: case '^':
1.1 paf 1080: pop_LS(PC);
1.114 paf 1081: PC.source--; if(--PC.col<0) { PC.line--; PC.col=-1; }
1.13 paf 1082: result=EON;
1.1 paf 1083: goto break2;
1.48 paf 1084: case '[':
1.162 parser 1085: // $name.<[>code]
1086: if(PC.col>1/*not first column*/ && (
1.163 parser 1087: end[-1]=='$'/*was start of get*/ ||
1088: end[-1]==':'/*was class name delim */ ||
1089: end[-1]=='.'/*was name delim */
1.162 parser 1090: )) {
1.166 parser 1091: push_LS(PC, LS_NAME_SQUARE_PART);
1.162 parser 1092: lexical_brackets_nestage=1;
1093: RC;
1094: }
1.114 paf 1095: PC.ls=LS_VAR_SQUARE;
1.1 paf 1096: lexical_brackets_nestage=1;
1.48 paf 1097: RC;
1098: case '{':
1099: if(begin==end) { // ${name}, no need of EON, switching LS
1.114 paf 1100: PC.ls=LS_VAR_NAME_CURLY;
1.48 paf 1101: } else {
1.114 paf 1102: PC.ls=LS_VAR_CURLY;
1.48 paf 1103: lexical_brackets_nestage=1;
1104: }
1.69 paf 1105:
1.48 paf 1106: RC;
1107: case '(':
1.114 paf 1108: PC.ls=LS_VAR_ROUND;
1.1 paf 1109: lexical_brackets_nestage=1;
1.48 paf 1110: RC;
1111: case '.': // name part delim
1112: case '$': // name part subvar
1.160 parser 1113: case ':': // class<:>name
1.166 parser 1114: // go to _WITHOUT_COLON state variant...
1115: if(PC.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1116: PC.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1117: else if(PC.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1118: PC.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1119: // ...stop before next ':'
1.48 paf 1120: RC;
1.1 paf 1121: }
1122: break;
1.48 paf 1123:
1.1 paf 1124: case LS_VAR_NAME_CURLY:
1.48 paf 1125: switch(c) {
1.162 parser 1126: case '[':
1.166 parser 1127: // ${name.<[>code]}
1128: push_LS(PC, LS_NAME_SQUARE_PART);
1.160 parser 1129: lexical_brackets_nestage=1;
1130: RC;
1.48 paf 1131: case '}': // ${name} finished, restoring LS
1.1 paf 1132: pop_LS(PC);
1.48 paf 1133: RC;
1134: case '.': // name part delim
1135: case '$': // name part subvar
1136: case ':': // ':name' or 'class:name'
1137: RC;
1.1 paf 1138: }
1139: break;
1.48 paf 1140:
1141: case LS_VAR_SQUARE:
1142: switch(c) {
1143: case '$':
1.166 parser 1144: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1145: RC;
1146: case '^':
1.10 paf 1147: push_LS(PC, LS_METHOD_NAME);
1.48 paf 1148: RC;
1149: case ']':
1.1 paf 1150: if(--lexical_brackets_nestage==0) {
1151: pop_LS(PC);
1.48 paf 1152: RC;
1.1 paf 1153: }
1.48 paf 1154: break;
1155: case ';': // operator_or_fmt;value delim
1156: RC;
1157: case '[':
1158: lexical_brackets_nestage++;
1159: break;
1.1 paf 1160: }
1161: break;
1.48 paf 1162:
1.1 paf 1163: case LS_VAR_CURLY:
1.48 paf 1164: switch(c) {
1165: case '$':
1.166 parser 1166: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1167: RC;
1168: case '^':
1.10 paf 1169: push_LS(PC, LS_METHOD_NAME);
1.48 paf 1170: RC;
1171: case '}':
1.1 paf 1172: if(--lexical_brackets_nestage==0) {
1173: pop_LS(PC);
1.48 paf 1174: RC;
1.1 paf 1175: }
1.48 paf 1176: break;
1177: case '{':
1.1 paf 1178: lexical_brackets_nestage++;
1.48 paf 1179: break;
1180: }
1.1 paf 1181: break;
1182:
1.10 paf 1183: // METHOD CALL
1.1 paf 1184: case LS_METHOD_NAME:
1.48 paf 1185: switch(c) {
1186: case '[':
1.166 parser 1187: // ^name.<[>code].xxx
1.162 parser 1188: if(PC.col>1/*not first column*/ && (
1.163 parser 1189: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1190: end[-1]==':'/*was class name delim */ ||
1191: end[-1]=='.'/*was name delim */
1.162 parser 1192: )) {
1.166 parser 1193: push_LS(PC, LS_NAME_SQUARE_PART);
1.162 parser 1194: lexical_brackets_nestage=1;
1195: RC;
1196: }
1.114 paf 1197: PC.ls=LS_METHOD_SQUARE;
1.1 paf 1198: lexical_brackets_nestage=1;
1.48 paf 1199: RC;
1200: case '{':
1.114 paf 1201: PC.ls=LS_METHOD_CURLY;
1.1 paf 1202: lexical_brackets_nestage=1;
1.48 paf 1203: RC;
1.69 paf 1204: case '(':
1.114 paf 1205: PC.ls=LS_METHOD_ROUND;
1.69 paf 1206: lexical_brackets_nestage=1;
1207: RC;
1.48 paf 1208: case '.': // name part delim
1209: case '$': // name part subvar
1210: case ':': // ':name' or 'class:name'
1.170 parser 1211: case '^': // ^abc^xxx wrong. bailing out
1212: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.48 paf 1213: RC;
1.1 paf 1214: }
1215: break;
1.48 paf 1216:
1217: case LS_METHOD_SQUARE:
1218: switch(c) {
1219: case '$':
1.166 parser 1220: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1221: RC;
1222: case '^':
1.10 paf 1223: push_LS(PC, LS_METHOD_NAME);
1.48 paf 1224: RC;
1225: case ';': // param delim
1226: RC;
1227: case ']':
1.1 paf 1228: if(--lexical_brackets_nestage==0) {
1.114 paf 1229: PC.ls=LS_METHOD_AFTER;
1.48 paf 1230: RC;
1.1 paf 1231: }
1.48 paf 1232: break;
1233: case '[':
1.1 paf 1234: lexical_brackets_nestage++;
1.48 paf 1235: break;
1236: }
1.1 paf 1237: break;
1.48 paf 1238:
1.1 paf 1239: case LS_METHOD_CURLY:
1.48 paf 1240: switch(c) {
1241: case '$':
1.166 parser 1242: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1243: RC;
1244: case '^':
1.10 paf 1245: push_LS(PC, LS_METHOD_NAME);
1.94 paf 1246: RC;
1247: case ';': // param delim
1.48 paf 1248: RC;
1249: case '}':
1.1 paf 1250: if(--lexical_brackets_nestage==0) {
1.114 paf 1251: PC.ls=LS_METHOD_AFTER;
1.48 paf 1252: RC;
1.1 paf 1253: }
1.48 paf 1254: break;
1255: case '{':
1.1 paf 1256: lexical_brackets_nestage++;
1.48 paf 1257: break;
1258: }
1.1 paf 1259: break;
1.48 paf 1260:
1.1 paf 1261: case LS_METHOD_AFTER:
1.69 paf 1262: if(c=='[') {/* ][ }[ )[ */
1.114 paf 1263: PC.ls=LS_METHOD_SQUARE;
1.1 paf 1264: lexical_brackets_nestage=1;
1.48 paf 1265: RC;
1.1 paf 1266: }
1.69 paf 1267: if(c=='{') {/* ]{ }{ ){ */
1.114 paf 1268: PC.ls=LS_METHOD_CURLY;
1.69 paf 1269: lexical_brackets_nestage=1;
1270: RC;
1271: }
1272: if(c=='(') {/* ]( }( )( */
1.114 paf 1273: PC.ls=LS_METHOD_ROUND;
1.1 paf 1274: lexical_brackets_nestage=1;
1.48 paf 1275: RC;
1.1 paf 1276: }
1277: pop_LS(PC);
1.114 paf 1278: PC.source--; if(--PC.col<0) { PC.line--; PC.col=-1; }
1.13 paf 1279: result=EON;
1.1 paf 1280: goto break2;
1281: }
1.9 paf 1282: if(c==0) {
1.1 paf 1283: result=-1;
1284: break;
1285: }
1286: }
1287:
1288: break2:
1.59 paf 1289: if(end!=begin) { // there is last piece?
1290: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1291: // strip last \n
1.10 paf 1292: end--;
1.137 parser 1293: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1294: end--;
1.59 paf 1295: }
1.194 paf 1296: if(end!=begin && PC.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1.59 paf 1297: // append it
1.121 paf 1298: PC.string->APPEND_CLEAN(begin, end-begin, PC.file, begin_line/*, start_col*/);
1.30 paf 1299: }
1.59 paf 1300: }
1.114 paf 1301: if(PC.string->size()) { // something accumulated?
1.17 paf 1302: // create STRING value: array of OP_VALUE+vstring
1.114 paf 1303: *lvalp=VL(NEW VString(*PC.string));
1.10 paf 1304: // new pieces storage
1.114 paf 1305: PC.string=NEW String(POOL);
1.58 paf 1306: // make current result be pending for next call, return STRING for now
1.114 paf 1307: PC.pending_state=result; result=STRING;
1.58 paf 1308: }
1.67 paf 1309: if(skip_analized) {
1.114 paf 1310: PC.source+=skip_analized; PC.col+=skip_analized;
1.1 paf 1311: }
1.58 paf 1312: return result;
1.1 paf 1313: }
1314:
1.110 paf 1315: static int real_yyerror(parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1316: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1317: return 1;
1.110 paf 1318: }
1.1 paf 1319:
1.110 paf 1320: static void yyprint(FILE *file, int type, YYSTYPE value) {
1321: if(type==STRING)
1.120 paf 1322: fprintf(file, " \"%s\"", LA2S(value)->cstr());
1.110 paf 1323: }
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