Annotation of parser3/src/main/compile.y, revision 1.197
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:
1.197 ! paf 8: $Id: compile.y,v 1.196 2002/09/20 09:26:32 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"
1.39 paf 37:
1.85 paf 38: #define SELF_ELEMENT_NAME "self"
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)
1.159 parser 162: PC.request->use_file(*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($$, OP_WITH_READ); /* stack: starting context */
1.179 paf 275:
1.197 ! paf 276: bool noDot=diving_code->size()==3;
1.196 paf 277: // OP_VALUE+string+OP_GET_ELEMENT. -> OP_VALUE+string+...OR_OPERATOR/OR_JUNCTION_EXP.
1.197 ! paf 278: if(PC.in_call_value) {
! 279: // ^if << possibly operator
! 280: // but ^code.xxxx << expand junction !!!
! 281:
1.196 paf 282: diving_code->put_int(2,
1.197 ! paf 283: noDot? // ELEMENT without .SUBELEMENT
! 284: OP_GET_ELEMENT_OR_OPERATOR // possibly ^if [search for operator]
! 285: : OP_GET_ELEMENT_OR_JUNCTION_EXPAND); // possibly ^junction.xxx [if junction, expand it]
! 286: } else {
! 287: // $code << expand junction
! 288: // $code.value << do not expand junction
! 289: // $code.value[xxx] << do not expand junction
! 290:
! 291: if(noDot)
! 292: diving_code->put_int(2, OP_GET_ELEMENT_OR_JUNCTION_EXPAND); // possibly $junction [if junction, expand it]
! 293: }
1.196 paf 294:
1.22 paf 295: P($$, diving_code);
296: }
297: /* diving code; stack: current context */
1.1 paf 298: };
1.155 parser 299: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P($$, $2) };
1.19 paf 300: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P($$, $2) };
1.1 paf 301:
302: /* put */
303:
1.81 paf 304: put: '$' name_expr_wdive construct {
1.20 paf 305: $$=$2; /* stack: context,name */
1.52 paf 306: P($$, $3); /* stack: context,name,constructor_value */
1.20 paf 307: };
1.44 paf 308: name_expr_wdive:
1.157 parser 309: name_expr_wdive_root
310: | name_expr_wdive_write
1.44 paf 311: | name_expr_wdive_class;
1.157 parser 312: name_expr_wdive_root: name_expr_dive_code {
1.44 paf 313: $$=N(POOL);
1.23 paf 314: Array *diving_code=$1;
1.120 paf 315: const String *first_name=LA2S(diving_code);
1.179 paf 316: // $self.xxx... -> $xxx...
317: // OP_VALUE+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 318: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.54 paf 319: O($$, OP_WITH_SELF); /* stack: starting context */
1.23 paf 320: P($$, diving_code,
321: /* skip over... */
1.179 paf 322: diving_code->size()>=3?3/*OP_VALUE+string+OP_GET_ELEMENTx*/:2/*OP_+string*/);
1.23 paf 323: } else {
1.157 parser 324: O($$, OP_WITH_ROOT); /* stack: starting context */
1.23 paf 325: P($$, diving_code);
326: }
327: /* diving code; stack: current context */
1.156 parser 328: };
1.157 parser 329: name_expr_wdive_write: '.' name_expr_dive_code {
1.156 parser 330: $$=N(POOL);
1.157 parser 331: O($$, OP_WITH_WRITE); /* stack: starting context */
1.156 parser 332: P($$, $2); /* diving code; stack: context,name */
1.20 paf 333: };
1.155 parser 334: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P($$, $2) };
1.20 paf 335:
1.149 parser 336: construct:
1.163 parser 337: construct_square
338: | construct_round
339: | construct_curly
1.149 parser 340: ;
341: construct_square: '[' any_constructor_code_value ']' {
342: // stack: context, name
343: $$=$2; // stack: context, name, value
1.81 paf 344: O($$, OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
345: }
346: ;
1.149 parser 347: construct_round: '(' expr_value ')' {
1.182 paf 348: $$=N(POOL);
349: O($$, OP_PREPARE_TO_EXPRESSION);
1.149 parser 350: // stack: context, name
1.182 paf 351: P($$, $2); // stack: context, name, value
1.163 parser 352: O($$, OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 353: }
1.52 paf 354: ;
1.149 parser 355: construct_curly: '{' maybe_codes '}' {
356: // stack: context, name
357: $$=N(POOL);
1.186 paf 358: OA($$, OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 359: };
360:
1.55 paf 361: any_constructor_code_value:
1.157 parser 362: void_value /* optimized $var[] case */
1.52 paf 363: | STRING /* optimized $var[STRING] case */
1.55 paf 364: | constructor_code_value /* $var[something complex] */
1.1 paf 365: ;
1.55 paf 366: constructor_code_value: constructor_code {
1.25 paf 367: $$=N(POOL);
1.186 paf 368: OA($$, OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 369: /* some code that writes to that context */
370: /* context=pop; stack: context.value() */
1.1 paf 371: };
1.55 paf 372: constructor_code: codes__excluding_sole_str_literal;
1.27 paf 373: codes__excluding_sole_str_literal: action | code codes { $$=$1; P($$, $2) };
374:
1.1 paf 375: /* call */
376:
1.66 paf 377: call: call_value {
378: $$=$1; /* stack: value */
1.185 paf 379: changetail_or_append($$,
1.186 paf 380: OP_CALL, true, /*->*/ OP_CALL__WRITE,
381: /*or */OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.66 paf 382: };
1.177 paf 383: call_value: '^' {
1.180 paf 384: PC.in_call_value=true;
1.177 paf 385: }
386: call_name {
1.180 paf 387: PC.in_call_value=false;
1.177 paf 388: }
1.154 parser 389: store_params EON { /* ^field.$method{vasya} */
390: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 391:
1.154 parser 392: YYSTYPE params_code=$5;
1.186 paf 393: if(params_code->size()==3) { // probably [] case. [OP_VALUE + Void + STORE_PARAM]
1.123 paf 394: if(Value *value=LA2V(params_code)) // it is OP_VALUE + value?
1.140 parser 395: if(!value->is_defined()) // value is VVoid?
1.123 paf 396: params_code=0; // ^zzz[] case. don't append lone empty param.
1.186 paf 397: }
398: /* stack: context, method_junction */
399: OA($$, OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
1.1 paf 400: };
401:
1.43 paf 402: call_name: name_without_curly_rdive;
1.38 paf 403:
1.9 paf 404: store_params: store_param | store_params store_param { $$=$1; P($$, $2) };
1.69 paf 405: store_param:
406: store_square_param
407: | store_round_param
408: | store_curly_param
1.31 paf 409: ;
1.123 paf 410: store_square_param: '[' store_code_param_parts ']' {$$=$2};
1.69 paf 411: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 412: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 413: store_code_param_parts:
414: store_code_param_part
415: | store_code_param_parts ';' store_code_param_part { $$=$1; P($$, $3) }
416: ;
417: store_expr_param_parts:
418: store_expr_param_part
419: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P($$, $3) }
420: ;
1.94 paf 421: store_curly_param_parts:
422: store_curly_param_part
423: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P($$, $3) }
424: ;
1.120 paf 425: store_code_param_part: code_param_value {
1.32 paf 426: $$=$1;
1.54 paf 427: O($$, OP_STORE_PARAM);
1.120 paf 428: };
1.69 paf 429: store_expr_param_part: write_expr_value {
430: $$=N(POOL);
1.186 paf 431: OA($$, OP_EXPR_CODE__STORE_PARAM, $1);
1.69 paf 432: };
1.94 paf 433: store_curly_param_part: maybe_codes {
434: $$=N(POOL);
1.186 paf 435: OA($$, OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 436: };
1.120 paf 437: code_param_value:
1.157 parser 438: void_value /* optimized [;...] case */
1.120 paf 439: | STRING /* optimized [STRING] case */
440: | constructor_code_value /* [something complex] */
441: ;
1.90 paf 442: write_expr_value: expr_value {
1.182 paf 443: $$=N(POOL);
444: O($$, OP_PREPARE_TO_EXPRESSION);
445: P($$, $1);
1.102 paf 446: O($$, OP_WRITE_EXPR_RESULT);
1.69 paf 447: };
1.1 paf 448:
449: /* name */
450:
1.20 paf 451: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P($$, $2) };
1.1 paf 452:
1.9 paf 453: name_path: name_step | name_path name_step { $$=$1; P($$, $2) };
1.1 paf 454: name_step: name_advance1 '.';
455: name_advance1: name_expr_value {
1.177 paf 456: // we know that name_advance1 not called from ^xxx context
457: // so we'll not check for operator call possibility as we do in name_advance2
458:
1.1 paf 459: /* stack: context */
460: $$=$1; /* stack: context,name */
1.54 paf 461: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 462: };
463: name_advance2: name_expr_value {
464: /* stack: context */
465: $$=$1; /* stack: context,name */
1.179 paf 466: O($$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 467: }
1.4 paf 468: | STRING BOGUS
1.1 paf 469: ;
470: name_expr_value:
1.4 paf 471: STRING /* subname_is_const */
1.1 paf 472: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 473: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 474: | name_square_code_value /* [codes] */
1.1 paf 475: ;
476: name_expr_subvar_value: '$' subvar_ref_name_rdive {
477: $$=$2;
1.54 paf 478: O($$, OP_GET_ELEMENT);
1.1 paf 479: };
1.4 paf 480: name_expr_with_subvar_value: STRING subvar_get_writes {
1.183 paf 481: Array *code;
482: {
483: change_string_literal_to_write_string_literal(code=$1);
484: P(code, $2);
485: }
1.25 paf 486: $$=N(POOL);
1.186 paf 487: OA($$, OP_STRING_POOL, code);
1.1 paf 488: };
1.166 parser 489: name_square_code_value: '[' codes ']' {
1.160 parser 490: $$=N(POOL);
1.186 paf 491: OA($$, OP_OBJECT_POOL, $2); /* stack: empty write context */
1.183 paf 492: /* some code that writes to that context */
493: /* context=pop; stack: context.value() */
1.160 parser 494: };
1.154 parser 495: subvar_ref_name_rdive: STRING {
1.25 paf 496: $$=N(POOL);
1.54 paf 497: O($$, OP_WITH_READ);
1.9 paf 498: P($$, $1);
1.1 paf 499: };
1.9 paf 500: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P($$, $2) };
1.1 paf 501: subvar__get_write: '$' subvar_ref_name_rdive {
502: $$=$2;
1.54 paf 503: O($$, OP_GET_ELEMENT__WRITE);
1.42 paf 504: };
505:
1.154 parser 506: class_prefix:
507: class_static_prefix
508: | class_constructor_prefix
509: ;
1.155 parser 510: class_static_prefix: STRING ':' {
511: $$=$1; // stack: class name string
1.189 paf 512: if(*LA2S($$) == BASE_NAME) { // pseude BASE class
513: if(VStateless_class *base=PC.cclass->base_class()) {
514: change_string_literal_value($$, base->name());
515: } else {
516: strcpy(PC.error, "no base class declared");
517: YYERROR;
518: }
519: }
1.155 parser 520: O($$, OP_GET_CLASS);
521: };
522: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 523: $$=$1;
1.180 paf 524: if(!PC.in_call_value) {
1.154 parser 525: strcpy(PC.error, ":: not allowed here");
526: YYERROR;
527: }
1.155 parser 528: O($$, OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 529: };
530:
1.53 paf 531:
1.56 paf 532: /* expr */
1.53 paf 533:
1.81 paf 534: expr_value: expr {
1.182 paf 535: // see OP_PREPARE_TO_EXPRESSION!!
1.81 paf 536: if(($$=$1)->size()==2) // only one string literal in there?
1.62 paf 537: change_string_literal_to_double_literal($$); // make that string literal Double
538: };
1.56 paf 539: expr:
1.62 paf 540: STRING
1.64 paf 541: | get_value
1.66 paf 542: | call_value
1.64 paf 543: | '"' string_inside_quotes_value '"' { $$ = $2; }
1.145 parser 544: | '\'' string_inside_quotes_value '\'' { $$ = $2; }
1.60 paf 545: | '(' expr ')' { $$ = $2; }
546: /* stack: operand // stack: @operand */
547: | '-' expr %prec NEG { $$=$2; O($$, OP_NEG) }
1.166 parser 548: | '+' expr %prec NEG { $$=$2 }
1.68 paf 549: | '~' expr { $$=$2; O($$, OP_INV) }
550: | '!' expr { $$=$2; O($$, OP_NOT) }
551: | "def" expr { $$=$2; O($$, OP_DEF) }
552: | "in" expr { $$=$2; O($$, OP_IN) }
553: | "-f" expr { $$=$2; O($$, OP_FEXISTS) }
1.127 paf 554: | "-d" expr { $$=$2; O($$, OP_DEXISTS) }
1.60 paf 555: /* stack: a,b // stack: a@b */
556: | expr '-' expr { $$=$1; P($$, $3); O($$, OP_SUB) }
557: | expr '+' expr { $$=$1; P($$, $3); O($$, OP_ADD) }
558: | expr '*' expr { $$=$1; P($$, $3); O($$, OP_MUL) }
559: | expr '/' expr { $$=$1; P($$, $3); O($$, OP_DIV) }
560: | expr '%' expr { $$=$1; P($$, $3); O($$, OP_MOD) }
1.173 paf 561: | expr '\\' expr { $$=$1; P($$, $3); O($$, OP_INTDIV) }
1.195 paf 562: | expr "<<" expr { $$=$1; P($$, $3); O($$, OP_BIN_SL) }
563: | expr ">>" expr { $$=$1; P($$, $3); O($$, OP_BIN_SR) }
1.60 paf 564: | expr '&' expr { $$=$1; P($$, $3); O($$, OP_BIN_AND) }
565: | expr '|' expr { $$=$1; P($$, $3); O($$, OP_BIN_OR) }
1.193 paf 566: | expr "!|" expr { $$=$1; P($$, $3); O($$, OP_BIN_XOR) }
1.186 paf 567: | expr "&&" expr { $$=$1; OA($$, OP_NESTED_CODE, $3); O($$, OP_LOG_AND) }
568: | expr "||" expr { $$=$1; OA($$, OP_NESTED_CODE, $3); O($$, OP_LOG_OR) }
1.193 paf 569: | expr "!||" expr { $$=$1; P($$, $3); O($$, OP_LOG_XOR) }
1.60 paf 570: | expr '<' expr { $$=$1; P($$, $3); O($$, OP_NUM_LT) }
571: | expr '>' expr { $$=$1; P($$, $3); O($$, OP_NUM_GT) }
572: | expr "<=" expr { $$=$1; P($$, $3); O($$, OP_NUM_LE) }
573: | expr ">=" expr { $$=$1; P($$, $3); O($$, OP_NUM_GE) }
574: | expr "==" expr { $$=$1; P($$, $3); O($$, OP_NUM_EQ) }
575: | expr "!=" expr { $$=$1; P($$, $3); O($$, OP_NUM_NE) }
1.61 paf 576: | expr "lt" expr { $$=$1; P($$, $3); O($$, OP_STR_LT) }
577: | expr "gt" expr { $$=$1; P($$, $3); O($$, OP_STR_GT) }
578: | expr "le" expr { $$=$1; P($$, $3); O($$, OP_STR_LE) }
579: | expr "ge" expr { $$=$1; P($$, $3); O($$, OP_STR_GE) }
580: | expr "eq" expr { $$=$1; P($$, $3); O($$, OP_STR_EQ) }
581: | expr "ne" expr { $$=$1; P($$, $3); O($$, OP_STR_NE) }
1.95 paf 582: | expr "is" expr { $$=$1; P($$, $3); O($$, OP_IS) }
1.56 paf 583: ;
1.55 paf 584:
1.65 paf 585: string_inside_quotes_value: maybe_codes {
1.64 paf 586: $$=N(POOL);
1.186 paf 587: OA($$, OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 588: /* some code that writes to that context */
589: /* context=pop; stack: context.get_string() */
1.53 paf 590: };
1.1 paf 591:
1.27 paf 592: /* basics */
1.1 paf 593:
1.81 paf 594: write_string: STRING {
1.102 paf 595: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
1.84 paf 596: change_string_literal_to_write_string_literal($$=$1)
1.54 paf 597: };
598:
1.157 parser 599: void_value: /* empty */ { $$=VL(NEW VVoid(POOL)) };
1.25 paf 600: empty: /* empty */ { $$=N(POOL) };
1.1 paf 601:
602: %%
1.105 paf 603: #endif
1.1 paf 604:
605: /*
606: 000$111(2222)00
607: 000$111{3333}00
1.9 paf 608: $,^: push,=0
1.1 paf 609: 1:( { break=pop
610: 2:( ) pop
611: 3:{ } pop
612:
613: 000^111(2222)4444{33333}4000
1.9 paf 614: $,^: push,=0
1.1 paf 615: 1:( { break=pop
616: 2:( )=4
617: 3:{ }=4
618: 4:[^({]=pop
619: */
620:
1.110 paf 621: static int yylex(YYSTYPE *lvalp, void *pc) {
1.177 paf 622: #define lexical_brackets_nestage PC.brackets_nestages[PC.ls_sp]
1.48 paf 623: #define RC {result=c; goto break2; }
1.1 paf 624:
625: register int c;
626: int result;
627:
1.114 paf 628: if(PC.pending_state) {
629: result=PC.pending_state;
630: PC.pending_state=0;
1.1 paf 631: return result;
632: }
633:
1.114 paf 634: const char *begin=PC.source;
1.91 paf 635: const char *end;
1.114 paf 636: int begin_line=PC.line;
1.67 paf 637: int skip_analized=0;
1.50 paf 638: while(true) {
1.114 paf 639: c=*(end=(PC.source++));
1.166 parser 640: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, PC.sp);
1.1 paf 641:
1.4 paf 642: if(c=='\n') {
1.114 paf 643: PC.line++;
644: PC.col=0;
1.10 paf 645: } else
1.114 paf 646: PC.col++;
1.73 paf 647:
1.171 parser 648: if(c=='@' && PC.col==0+1) {
1.175 paf 649: if(PC.ls==LS_DEF_SPECIAL_BODY) {
650: // @SPECIAL
651: // ...
652: // @<here =
653: pop_LS(PC); // exiting from LS_DEF_SPECIAL_BODY state
654: } // continuing checks
1.171 parser 655: if(PC.ls==LS_USER) {
656: push_LS(PC, LS_DEF_NAME);
657: RC;
1.175 paf 658: } else // @ in first column inside some code [when could that be?]
1.171 parser 659: result=BAD_METHOD_DECL_START;
660: goto break2;
661: } else if(c=='^')
1.169 parser 662: switch(PC.ls) {
663: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
664: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
665: case LS_VAR_NAME_SIMPLE_WITH_COLON:
666: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
667: case LS_VAR_NAME_CURLY:
668: case LS_METHOD_NAME:
1.194 paf 669: case LS_USER_COMMENT:
1.169 parser 670: case LS_DEF_COMMENT:
671: // no literals in names, please
672: break;
673: default:
1.114 paf 674: switch(*PC.source) {
1.165 parser 675: // ^escaping some punctuators
1.48 paf 676: case '^': case '$': case ';':
1.126 paf 677: case '(': case ')':
1.48 paf 678: case '[': case ']':
679: case '{': case '}':
1.172 parser 680: case '"': case ':':
1.40 paf 681: if(end!=begin) {
682: // append piece till ^
1.121 paf 683: PC.string->APPEND_CLEAN(begin, end-begin, PC.file, begin_line);
1.40 paf 684: }
1.63 paf 685: // reset piece 'begin' position & line
1.164 parser 686: end=begin=PC.source; // ^
1.114 paf 687: begin_line=PC.line;
1.164 parser 688: if(PC.ls==LS_METHOD_AFTER) {
689: pop_LS(PC);
690: result=EON;
1.165 parser 691: skip_analized=-1; // return to ^ afterwards to assure it's literality
1.164 parser 692: goto break2;
693: } else {
694: // skip over _ after ^
695: PC.source++; PC.col++;
696: // skip analysis = forced literal
697: continue;
698: }
1.114 paf 699:
700: // converting ^#HH into char(hex(HH))
701: case '#':
702: if(end!=begin) {
703: // append piece till ^
1.121 paf 704: PC.string->APPEND_CLEAN(begin, end-begin, PC.file, begin_line);
1.114 paf 705: }
706: // #HH ?
707: if(PC.source[0]=='#' && PC.source[1] && PC.source[2]) {
708: char *hex=(char *)POOL.malloc(1);
709: hex[0]=
710: hex_value[(unsigned char)PC.source[1]]*0x10+
711: hex_value[(unsigned char)PC.source[2]];
712: if(hex[0]==0) {
713: result=BAD_HEX_LITERAL;
714: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
715: }
716: // append char(hex(HH))
1.121 paf 717: PC.string->APPEND_CLEAN(hex, 1, PC.file, begin_line);
1.114 paf 718: // skip over ^#HH
719: PC.source+=3;
720: PC.col+=3;
721: // reset piece 'begin' position & line
722: begin=PC.source; // ^
723: begin_line=PC.line;
724: continue;
725: }
726: break;
1.1 paf 727: }
1.169 parser 728: break;
729: }
1.113 paf 730: // #comment start skipping
1.114 paf 731: if(c=='#' && PC.col==1) {
1.112 paf 732: if(end!=begin) {
733: // append piece till #
1.121 paf 734: PC.string->APPEND_CLEAN(begin, end-begin, PC.file, begin_line);
1.112 paf 735: }
736: // fall into COMMENT lexical state [wait for \n]
1.194 paf 737: push_LS(PC, LS_USER_COMMENT);
1.175 paf 738: continue;
1.112 paf 739: }
1.114 paf 740: switch(PC.ls) {
1.10 paf 741:
742: // USER'S = NOT OURS
1.1 paf 743: case LS_USER:
1.166 parser 744: case LS_NAME_SQUARE_PART: // name.[here].xxx
1.153 parser 745: if(PC.trim_bof)
746: switch(c) {
747: case '\n': case ' ': case '\t':
1.152 parser 748: begin=PC.source;
749: begin_line=PC.line;
750: continue; // skip it
1.153 parser 751: default:
752: PC.trim_bof=false;
1.152 parser 753: }
1.48 paf 754: switch(c) {
755: case '$':
1.166 parser 756: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 757: RC;
758: case '^':
759: push_LS(PC, LS_METHOD_NAME);
760: RC;
1.166 parser 761: case ']':
762: if(PC.ls==LS_NAME_SQUARE_PART)
763: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
764: pop_LS(PC); // $name.[co<]>de<]!>
765: RC;
766: }
1.160 parser 767: break;
1.166 parser 768: case '[': // $name.[co<[>de]
769: if(PC.ls==LS_NAME_SQUARE_PART)
770: lexical_brackets_nestage++;
1.161 parser 771: break;
1.112 paf 772: }
773: break;
774:
775: // #COMMENT
1.194 paf 776: case LS_USER_COMMENT:
1.112 paf 777: if(c=='\n') {
778: // skip comment
1.114 paf 779: begin=PC.source;
780: begin_line=PC.line;
1.112 paf 781:
782: pop_LS(PC);
783: continue;
1.1 paf 784: }
1.48 paf 785: break;
786:
787: // STRING IN EXPRESSION
1.145 parser 788: case LS_EXPRESSION_STRING_QUOTED:
789: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 790: switch(c) {
791: case '"':
1.145 parser 792: case '\'':
793: if(
794: PC.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
795: PC.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
796: pop_LS(PC); //"abc". | 'abc'.
797: RC;
798: }
799: break;
1.48 paf 800: case '$':
1.166 parser 801: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 802: RC;
803: case '^':
1.10 paf 804: push_LS(PC, LS_METHOD_NAME);
1.48 paf 805: RC;
1.10 paf 806: }
807: break;
808:
809: // METHOD DEFINITION
810: case LS_DEF_NAME:
1.48 paf 811: switch(c) {
812: case '[':
1.114 paf 813: PC.ls=LS_DEF_PARAMS;
1.48 paf 814: RC;
815: case '\n':
1.114 paf 816: PC.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 817: RC;
1.10 paf 818: }
819: break;
1.48 paf 820:
1.10 paf 821: case LS_DEF_PARAMS:
1.48 paf 822: switch(c) {
1.192 paf 823: case '$': // common error
1.193 paf 824: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
825: goto break2;
1.48 paf 826: case ';':
827: RC;
828: case ']':
1.114 paf 829: PC.ls=*PC.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 830: RC;
1.49 paf 831: case '\n': // wrong. bailing out
1.10 paf 832: pop_LS(PC);
1.48 paf 833: RC;
1.10 paf 834: }
835: break;
1.48 paf 836:
1.10 paf 837: case LS_DEF_LOCALS:
1.48 paf 838: switch(c) {
839: case '[':
840: case ';':
841: RC;
842: case ']':
1.114 paf 843: PC.ls=LS_DEF_COMMENT;
1.48 paf 844: RC;
845: case '\n': // wrong. bailing out
1.10 paf 846: pop_LS(PC);
1.48 paf 847: RC;
1.10 paf 848: }
849: break;
1.48 paf 850:
1.10 paf 851: case LS_DEF_COMMENT:
852: if(c=='\n') {
853: pop_LS(PC);
1.48 paf 854: RC;
1.37 paf 855: }
856: break;
857:
1.48 paf 858: case LS_DEF_SPECIAL_BODY:
1.175 paf 859: if(c=='\n')
1.48 paf 860: RC;
861: break;
862:
863: // (EXPRESSION)
1.69 paf 864: case LS_VAR_ROUND:
865: case LS_METHOD_ROUND:
1.48 paf 866: switch(c) {
867: case ')':
868: if(--lexical_brackets_nestage==0)
1.114 paf 869: if(PC.ls==LS_METHOD_ROUND) // method round param ended
870: PC.ls=LS_METHOD_AFTER; // look for method end
871: else // PC.ls==LS_VAR_ROUND // variable constructor ended
1.69 paf 872: pop_LS(PC); // return to normal life
1.48 paf 873: RC;
1.194 paf 874: case '#': // comment start skipping
875: if(end!=begin) {
876: // append piece till #
877: PC.string->APPEND_CLEAN(begin, end-begin, PC.file, begin_line);
878: }
879: // fall into COMMENT lexical state [wait for \n]
880: push_LS(PC, LS_EXPRESSION_COMMENT);
881: lexical_brackets_nestage=1;
882: continue;
1.48 paf 883: case '$':
1.166 parser 884: push_LS(PC, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 885: RC;
886: case '^':
887: push_LS(PC, LS_METHOD_NAME);
888: RC;
889: case '(':
890: lexical_brackets_nestage++;
891: RC;
1.67 paf 892: case '-':
1.127 paf 893: switch(*PC.source) {
894: case 'f': // -f
1.67 paf 895: skip_analized=1;
896: result=FEXISTS;
1.127 paf 897: goto break2;
898: case 'd': // -d
899: skip_analized=1;
900: result=DEXISTS;
901: goto break2;
1.191 paf 902: default: // minus
1.67 paf 903: result=c;
1.127 paf 904: goto break2;
905: }
1.67 paf 906: goto break2;
1.173 paf 907: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 908: case '~':
1.48 paf 909: case ';':
910: RC;
1.193 paf 911: case '&': case '|':
1.114 paf 912: if(*PC.source==c) { // && ||
1.193 paf 913: result=c=='&'?LAND:LOR;
1.67 paf 914: skip_analized=1;
1.58 paf 915: } else
916: result=c;
917: goto break2;
1.193 paf 918: case '!':
919: switch(PC.source[0]) {
920: case '|': // !| !||
921: skip_analized=1;
922: if(PC.source[1]=='|') {
923: skip_analized++;
924: result=LXOR;
925: } else
926: result=NXOR;
927: goto break2;
928: case '=': // !=
929: skip_analized=1;
930: result=NNE;
931: goto break2;
932: }
933: RC;
1.195 paf 934:
935: case '<': // <<, <=, <
936: switch(*PC.source) {
937: case '<': // <[<]
938: skip_analized=1; result=NSL; break;
939: case '=': // <[=]
940: skip_analized=1; result=NLE; break;
941: default: // <[]
942: result=c; break;
943: }
944: goto break2;
945: case '>': // >>, >=, >
946: switch(*PC.source) {
947: case '>': // >[>]
948: skip_analized=1; result=NSR; break;
949: case '=': // >[=]
950: skip_analized=1; result=NGE; break;
951: default: // >[]
952: result=c; break;
953: }
954: goto break2;
955: case '=': // ==
956: switch(*PC.source) {
957: case '=': // =[=]
958: skip_analized=1; result=NEQ; break;
959: default: // =[]
960: result=c; break; // not used now
961: }
1.58 paf 962: goto break2;
1.195 paf 963:
1.48 paf 964: case '"':
1.145 parser 965: push_LS(PC, LS_EXPRESSION_STRING_QUOTED);
966: RC;
967: case '\'':
968: push_LS(PC, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 969: RC;
1.50 paf 970: case 'l': case 'g': case 'e': case 'n':
1.51 paf 971: if(end==begin) // right after whitespace
1.117 paf 972: if(isspace(PC.source[1])) {
973: switch(*PC.source) {
974: // case '?': // ok [and bad cases, yacc would bark at them]
975: case 't': // lt gt [et nt]
976: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
977: skip_analized=1;
978: goto break2;
979: case 'e': // le ge ne [ee]
980: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
981: skip_analized=1;
982: goto break2;
983: case 'q': // eq [lq gq nq]
984: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
985: skip_analized=1;
986: goto break2;
987: }
1.67 paf 988: }
989: break;
990: case 'i':
991: if(end==begin) // right after whitespace
1.117 paf 992: if(isspace(PC.source[1])) {
993: switch(PC.source[0]) {
994: case 'n': // in
1.95 paf 995: skip_analized=1;
996: result=IN;
997: goto break2;
1.117 paf 998: case 's': // is
1.95 paf 999: skip_analized=1;
1000: result=IS;
1001: goto break2;
1002: }
1.67 paf 1003: }
1004: break;
1005: case 'd':
1006: if(end==begin) // right after whitespace
1.114 paf 1007: if(PC.source[0]=='e' && PC.source[1]=='f') { // def
1.67 paf 1008: skip_analized=2;
1009: result=DEF;
1.58 paf 1010: goto break2;
1.50 paf 1011: }
1.48 paf 1012: break;
1013: case ' ': case '\t': case '\n':
1.63 paf 1014: if(end!=begin) { // there were a string after previous operator?
1015: result=0; // return that string
1016: goto break2;
1.48 paf 1017: }
1.63 paf 1018: // that's a leading|traling space or after-operator-space
1019: // ignoring it
1020: // reset piece 'begin' position & line
1.114 paf 1021: begin=PC.source; // after whitespace char
1022: begin_line=PC.line;
1.48 paf 1023: continue;
1.1 paf 1024: }
1025: break;
1.194 paf 1026: case LS_EXPRESSION_COMMENT:
1027: if(c=='(')
1028: lexical_brackets_nestage++;
1029:
1030: switch(*PC.source) {
1031: case '\n': case ')':
1032: if(*PC.source==')')
1033: if(--lexical_brackets_nestage!=0)
1034: continue;
1035:
1036: // skip comment
1037: begin=PC.source;
1038: begin_line=PC.line;
1039:
1040: pop_LS(PC);
1041: continue;
1042: }
1043: break;
1.1 paf 1044:
1.10 paf 1045: // VARIABLE GET/PUT/WITH
1.166 parser 1046: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1047: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1048: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1049: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1050: if(
1051: PC.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1052: PC.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1053: // name in expr ends also before
1.48 paf 1054: switch(c) {
1.181 paf 1055: // expression minus
1.92 paf 1056: case '-':
1.181 paf 1057: // expression integer division
1058: case '\\':
1.48 paf 1059: pop_LS(PC);
1.114 paf 1060: PC.source--; if(--PC.col<0) { PC.line--; PC.col=-1; }
1.48 paf 1061: result=EON;
1062: goto break2;
1063: }
1064: }
1.166 parser 1065: if(
1066: PC.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1067: PC.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1068: // name already has ':', stop before next
1069: switch(c) {
1070: case ':':
1071: pop_LS(PC);
1072: PC.source--; if(--PC.col<0) { PC.line--; PC.col=-1; }
1073: result=EON;
1074: goto break2;
1075: }
1076: }
1.48 paf 1077: switch(c) {
1078: case 0:
1079: case ' ': case '\t': case '\n':
1080: case ';':
1.126 paf 1081: case ']': case '}': case ')':
1082: case '"': case '\'':
1.139 parser 1083: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1084: case '+': case '*': case '/': case '%':
1085: case '&': case '|':
1086: case '=': case '!':
1.99 paf 1087: // common delimiters
1.190 paf 1088: case ',': case '?': case '#':
1.139 parser 1089: // before call
1090: case '^':
1.1 paf 1091: pop_LS(PC);
1.114 paf 1092: PC.source--; if(--PC.col<0) { PC.line--; PC.col=-1; }
1.13 paf 1093: result=EON;
1.1 paf 1094: goto break2;
1.48 paf 1095: case '[':
1.162 parser 1096: // $name.<[>code]
1097: if(PC.col>1/*not first column*/ && (
1.163 parser 1098: end[-1]=='$'/*was start of get*/ ||
1099: end[-1]==':'/*was class name delim */ ||
1100: end[-1]=='.'/*was name delim */
1.162 parser 1101: )) {
1.166 parser 1102: push_LS(PC, LS_NAME_SQUARE_PART);
1.162 parser 1103: lexical_brackets_nestage=1;
1104: RC;
1105: }
1.114 paf 1106: PC.ls=LS_VAR_SQUARE;
1.1 paf 1107: lexical_brackets_nestage=1;
1.48 paf 1108: RC;
1109: case '{':
1110: if(begin==end) { // ${name}, no need of EON, switching LS
1.114 paf 1111: PC.ls=LS_VAR_NAME_CURLY;
1.48 paf 1112: } else {
1.114 paf 1113: PC.ls=LS_VAR_CURLY;
1.48 paf 1114: lexical_brackets_nestage=1;
1115: }
1.69 paf 1116:
1.48 paf 1117: RC;
1118: case '(':
1.114 paf 1119: PC.ls=LS_VAR_ROUND;
1.1 paf 1120: lexical_brackets_nestage=1;
1.48 paf 1121: RC;
1122: case '.': // name part delim
1123: case '$': // name part subvar
1.160 parser 1124: case ':': // class<:>name
1.166 parser 1125: // go to _WITHOUT_COLON state variant...
1126: if(PC.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1127: PC.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1128: else if(PC.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1129: PC.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1130: // ...stop before next ':'
1.48 paf 1131: RC;
1.1 paf 1132: }
1133: break;
1.48 paf 1134:
1.1 paf 1135: case LS_VAR_NAME_CURLY:
1.48 paf 1136: switch(c) {
1.162 parser 1137: case '[':
1.166 parser 1138: // ${name.<[>code]}
1139: push_LS(PC, LS_NAME_SQUARE_PART);
1.160 parser 1140: lexical_brackets_nestage=1;
1141: RC;
1.48 paf 1142: case '}': // ${name} finished, restoring LS
1.1 paf 1143: pop_LS(PC);
1.48 paf 1144: RC;
1145: case '.': // name part delim
1146: case '$': // name part subvar
1147: case ':': // ':name' or 'class:name'
1148: RC;
1.1 paf 1149: }
1150: break;
1.48 paf 1151:
1152: case LS_VAR_SQUARE:
1153: switch(c) {
1154: case '$':
1.166 parser 1155: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1156: RC;
1157: case '^':
1.10 paf 1158: push_LS(PC, LS_METHOD_NAME);
1.48 paf 1159: RC;
1160: case ']':
1.1 paf 1161: if(--lexical_brackets_nestage==0) {
1162: pop_LS(PC);
1.48 paf 1163: RC;
1.1 paf 1164: }
1.48 paf 1165: break;
1166: case ';': // operator_or_fmt;value delim
1167: RC;
1168: case '[':
1169: lexical_brackets_nestage++;
1170: break;
1.1 paf 1171: }
1172: break;
1.48 paf 1173:
1.1 paf 1174: case LS_VAR_CURLY:
1.48 paf 1175: switch(c) {
1176: case '$':
1.166 parser 1177: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1178: RC;
1179: case '^':
1.10 paf 1180: push_LS(PC, LS_METHOD_NAME);
1.48 paf 1181: RC;
1182: case '}':
1.1 paf 1183: if(--lexical_brackets_nestage==0) {
1184: pop_LS(PC);
1.48 paf 1185: RC;
1.1 paf 1186: }
1.48 paf 1187: break;
1188: case '{':
1.1 paf 1189: lexical_brackets_nestage++;
1.48 paf 1190: break;
1191: }
1.1 paf 1192: break;
1193:
1.10 paf 1194: // METHOD CALL
1.1 paf 1195: case LS_METHOD_NAME:
1.48 paf 1196: switch(c) {
1197: case '[':
1.166 parser 1198: // ^name.<[>code].xxx
1.162 parser 1199: if(PC.col>1/*not first column*/ && (
1.163 parser 1200: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1201: end[-1]==':'/*was class name delim */ ||
1202: end[-1]=='.'/*was name delim */
1.162 parser 1203: )) {
1.166 parser 1204: push_LS(PC, LS_NAME_SQUARE_PART);
1.162 parser 1205: lexical_brackets_nestage=1;
1206: RC;
1207: }
1.114 paf 1208: PC.ls=LS_METHOD_SQUARE;
1.1 paf 1209: lexical_brackets_nestage=1;
1.48 paf 1210: RC;
1211: case '{':
1.114 paf 1212: PC.ls=LS_METHOD_CURLY;
1.1 paf 1213: lexical_brackets_nestage=1;
1.48 paf 1214: RC;
1.69 paf 1215: case '(':
1.114 paf 1216: PC.ls=LS_METHOD_ROUND;
1.69 paf 1217: lexical_brackets_nestage=1;
1218: RC;
1.48 paf 1219: case '.': // name part delim
1220: case '$': // name part subvar
1221: case ':': // ':name' or 'class:name'
1.170 parser 1222: case '^': // ^abc^xxx wrong. bailing out
1223: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.48 paf 1224: RC;
1.1 paf 1225: }
1226: break;
1.48 paf 1227:
1228: case LS_METHOD_SQUARE:
1229: switch(c) {
1230: case '$':
1.166 parser 1231: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1232: RC;
1233: case '^':
1.10 paf 1234: push_LS(PC, LS_METHOD_NAME);
1.48 paf 1235: RC;
1236: case ';': // param delim
1237: RC;
1238: case ']':
1.1 paf 1239: if(--lexical_brackets_nestage==0) {
1.114 paf 1240: PC.ls=LS_METHOD_AFTER;
1.48 paf 1241: RC;
1.1 paf 1242: }
1.48 paf 1243: break;
1244: case '[':
1.1 paf 1245: lexical_brackets_nestage++;
1.48 paf 1246: break;
1247: }
1.1 paf 1248: break;
1.48 paf 1249:
1.1 paf 1250: case LS_METHOD_CURLY:
1.48 paf 1251: switch(c) {
1252: case '$':
1.166 parser 1253: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1254: RC;
1255: case '^':
1.10 paf 1256: push_LS(PC, LS_METHOD_NAME);
1.94 paf 1257: RC;
1258: case ';': // param delim
1.48 paf 1259: RC;
1260: case '}':
1.1 paf 1261: if(--lexical_brackets_nestage==0) {
1.114 paf 1262: PC.ls=LS_METHOD_AFTER;
1.48 paf 1263: RC;
1.1 paf 1264: }
1.48 paf 1265: break;
1266: case '{':
1.1 paf 1267: lexical_brackets_nestage++;
1.48 paf 1268: break;
1269: }
1.1 paf 1270: break;
1.48 paf 1271:
1.1 paf 1272: case LS_METHOD_AFTER:
1.69 paf 1273: if(c=='[') {/* ][ }[ )[ */
1.114 paf 1274: PC.ls=LS_METHOD_SQUARE;
1.1 paf 1275: lexical_brackets_nestage=1;
1.48 paf 1276: RC;
1.1 paf 1277: }
1.69 paf 1278: if(c=='{') {/* ]{ }{ ){ */
1.114 paf 1279: PC.ls=LS_METHOD_CURLY;
1.69 paf 1280: lexical_brackets_nestage=1;
1281: RC;
1282: }
1283: if(c=='(') {/* ]( }( )( */
1.114 paf 1284: PC.ls=LS_METHOD_ROUND;
1.1 paf 1285: lexical_brackets_nestage=1;
1.48 paf 1286: RC;
1.1 paf 1287: }
1288: pop_LS(PC);
1.114 paf 1289: PC.source--; if(--PC.col<0) { PC.line--; PC.col=-1; }
1.13 paf 1290: result=EON;
1.1 paf 1291: goto break2;
1292: }
1.9 paf 1293: if(c==0) {
1.1 paf 1294: result=-1;
1295: break;
1296: }
1297: }
1298:
1299: break2:
1.59 paf 1300: if(end!=begin) { // there is last piece?
1301: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1302: // strip last \n
1.10 paf 1303: end--;
1.137 parser 1304: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1305: end--;
1.59 paf 1306: }
1.194 paf 1307: if(end!=begin && PC.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1.59 paf 1308: // append it
1.121 paf 1309: PC.string->APPEND_CLEAN(begin, end-begin, PC.file, begin_line/*, start_col*/);
1.30 paf 1310: }
1.59 paf 1311: }
1.114 paf 1312: if(PC.string->size()) { // something accumulated?
1.17 paf 1313: // create STRING value: array of OP_VALUE+vstring
1.114 paf 1314: *lvalp=VL(NEW VString(*PC.string));
1.10 paf 1315: // new pieces storage
1.114 paf 1316: PC.string=NEW String(POOL);
1.58 paf 1317: // make current result be pending for next call, return STRING for now
1.114 paf 1318: PC.pending_state=result; result=STRING;
1.58 paf 1319: }
1.67 paf 1320: if(skip_analized) {
1.114 paf 1321: PC.source+=skip_analized; PC.col+=skip_analized;
1.1 paf 1322: }
1.58 paf 1323: return result;
1.1 paf 1324: }
1325:
1.110 paf 1326: static int real_yyerror(parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1327: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1328: return 1;
1.110 paf 1329: }
1.1 paf 1330:
1.110 paf 1331: static void yyprint(FILE *file, int type, YYSTYPE value) {
1332: if(type==STRING)
1.120 paf 1333: fprintf(file, " \"%s\"", LA2S(value)->cstr());
1.110 paf 1334: }
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