Annotation of parser3/src/main/compile.y, revision 1.204.2.4
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:
1.204.2.4! paf 8: $Id: compile.y,v 1.204.2.3 2003/01/31 12:34:34 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*/
1.204.2.3 paf 119: ArrayStringPtr(0)/*param_names*/, ArrayStringPtr(0)/*local_names*/,
1.204.2.2 paf 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 {
1.204.2.3 paf 132: StringPtr 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
1.204.2.3 paf 149: StringPtr 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)
1.204.2.4! paf 161: PC.request->use_file(*PC.request->main_class, LA2S(*strings_code, i));
1.204.2.2 paf 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) {
1.204.2.3 paf 170: StringPtr base_name=LA2S(*strings_code);
171: if(ValuePtr base_class_value=PC.request->classes().get(base_name)) {
1.204.2.2 paf 172: // @CLASS == @BASE sanity check
1.204.2.3 paf 173: if(VStateless_class *base_class=base_class_value->get_class()) {
174: if(PC.cclass.get()==base_class) {
175: strcpy(PC.error, "@"CLASS_NAME" equals @"BASE_NAME);
176: YYERROR;
177: }
178: PC.cclass->get_class()->set_base(base_class);
179: } else { // they asked to derive from a class without methods ['env' & co]
180: strcpy(PC.error, base_name->cstr());
181: strcat(PC.error, ": you can not derive from this class in @"BASE_NAME);
1.204.2.2 paf 182: YYERROR;
183: }
184: } else {
185: strcpy(PC.error, base_name->cstr());
1.130 paf 186: strcat(PC.error, ": undefined class in @"BASE_NAME);
1.73 paf 187: YYERROR;
188: }
1.34 paf 189: } else {
1.130 paf 190: strcpy(PC.error, "@"BASE_NAME" must contain sole name");
1.34 paf 191: YYERROR;
192: }
1.130 paf 193: } else {
194: strcpy(PC.error, "'");
1.204.2.2 paf 195: strncat(PC.error, command->cstr(), MAX_STRING/2);
1.130 paf 196: strcat(PC.error, "' invalid special name. valid names are "
197: "'"CLASS_NAME"', '"USE_CONTROL_METHOD_NAME"' and '"BASE_NAME"'");
198: YYERROR;
1.34 paf 199: }
200: };
1.132 paf 201: maybe_control_strings: empty | control_strings;
1.204.2.2 paf 202: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2) };
1.37 paf 203: control_string: maybe_string '\n';
204: maybe_string: empty | STRING;
1.34 paf 205:
206: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n'
1.10 paf 207: maybe_codes {
1.204.2.3 paf 208: StringPtr name=LA2S(*$2);
1.10 paf 209:
210: YYSTYPE params_names_code=$3;
1.204.2.3 paf 211: ArrayStringPtr params_names;
1.204.2.2 paf 212: if(int size=params_names_code->count()) {
1.204.2.3 paf 213: params_names=ArrayStringPtr(new ArrayString);
1.75 paf 214: for(int i=0; i<size; i+=2)
1.204.2.2 paf 215: *params_names+=LA2S(*params_names_code, i);
1.75 paf 216: }
1.10 paf 217:
218: YYSTYPE locals_names_code=$4;
1.204.2.3 paf 219: ArrayStringPtr locals_names;
1.204.2.2 paf 220: if(int size=locals_names_code->count()) {
1.204.2.3 paf 221: locals_names=ArrayStringPtr(new ArrayString);
1.75 paf 222: for(int i=0; i<size; i+=2)
1.204.2.2 paf 223: *locals_names+=LA2S(*locals_names_code, i);
1.75 paf 224: }
1.10 paf 225:
1.204.2.2 paf 226: MethodPtr method(new Method(
227: name,
1.122 paf 228: Method::CT_ANY,
1.81 paf 229: 0, 0/*min,max numbered_params_count*/,
1.76 paf 230: params_names, locals_names,
1.204.2.2 paf 231: $7, 0));
232: PC.cclass->add_method(name, method);
1.8 paf 233: };
1.10 paf 234:
235: maybe_bracketed_strings: empty | bracketed_maybe_strings;
236: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
237: maybe_strings: empty | strings;
1.204.2.2 paf 238: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3) };
1.10 paf 239:
240: maybe_comment: empty | STRING;
1.1 paf 241:
242: /* codes */
243:
1.10 paf 244: maybe_codes: empty | codes;
245:
1.204.2.2 paf 246: codes: code | codes code { $$=$1; P(*$$, *$2) };
1.81 paf 247: code: write_string | action;
1.149 parser 248: action: get | put | call;
1.1 paf 249:
250: /* get */
251:
1.64 paf 252: get: get_value {
1.184 paf 253: $$=$1; /* stack: resulting value */
1.204.2.2 paf 254: changetail_or_append(*$$,
1.186 paf 255: OP_GET_ELEMENT, false, /*->*/OP_GET_ELEMENT__WRITE,
256: /*or */OP_WRITE_VALUE
1.184 paf 257: ); /* value=pop; wcontext.write(value) */
1.1 paf 258: };
1.163 parser 259: get_value: '$' get_name_value { $$=$2 };
1.64 paf 260: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 261: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 262: name_without_curly_rdive:
263: name_without_curly_rdive_read
264: | name_without_curly_rdive_class;
1.19 paf 265: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.204.2.2 paf 266: $$=N();
267: ArrayOperationPtr diving_code=$1;
1.204.2.3 paf 268: StringPtr first_name=LA2S(*diving_code);
1.179 paf 269: // self.xxx... -> xxx...
270: // OP_VALUE+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 271: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.204.2.2 paf 272: O(*$$, OP_WITH_SELF); /* stack: starting context */
273: P(*$$, *diving_code,
1.22 paf 274: /* skip over... */
1.204.2.2 paf 275: diving_code->count()>=3?3/*OP_VALUE+string+OP_GET_ELEMENTx*/:2/*OP_+string*/);
1.22 paf 276: } else {
1.204.2.2 paf 277: O(*$$, OP_WITH_READ); /* stack: starting context */
1.179 paf 278:
1.201 paf 279: // ^if ELEMENT -> ^if ELEMENT_OR_OPERATOR
280: // OP_VALUE+string+OP_GET_ELEMENT. -> OP_VALUE+string+OP_GET_ELEMENT_OR_OPERATOR.
1.204.2.2 paf 281: if(PC.in_call_value && diving_code->count()==3)
282: (*diving_code)[2].code=OP_GET_ELEMENT_OR_OPERATOR;
283: P(*$$, *diving_code);
1.22 paf 284: }
285: /* diving code; stack: current context */
1.1 paf 286: };
1.204.2.2 paf 287: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2) };
288: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2) };
1.1 paf 289:
290: /* put */
291:
1.81 paf 292: put: '$' name_expr_wdive construct {
1.20 paf 293: $$=$2; /* stack: context,name */
1.204.2.2 paf 294: P(*$$, *$3); /* stack: context,name,constructor_value */
1.20 paf 295: };
1.44 paf 296: name_expr_wdive:
1.157 parser 297: name_expr_wdive_root
298: | name_expr_wdive_write
1.44 paf 299: | name_expr_wdive_class;
1.157 parser 300: name_expr_wdive_root: name_expr_dive_code {
1.204.2.2 paf 301: $$=N();
302: ArrayOperationPtr diving_code=$1;
1.204.2.3 paf 303: StringPtr first_name=LA2S(*diving_code);
1.179 paf 304: // $self.xxx... -> $xxx...
305: // OP_VALUE+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 306: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.204.2.2 paf 307: O(*$$, OP_WITH_SELF); /* stack: starting context */
308: P(*$$, *diving_code,
1.23 paf 309: /* skip over... */
1.204.2.2 paf 310: diving_code->count()>=3?3/*OP_VALUE+string+OP_GET_ELEMENTx*/:2/*OP_+string*/);
1.23 paf 311: } else {
1.204.2.2 paf 312: O(*$$, OP_WITH_ROOT); /* stack: starting context */
313: P(*$$, *diving_code);
1.23 paf 314: }
315: /* diving code; stack: current context */
1.156 parser 316: };
1.157 parser 317: name_expr_wdive_write: '.' name_expr_dive_code {
1.204.2.2 paf 318: $$=N();
319: O(*$$, OP_WITH_WRITE); /* stack: starting context */
320: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 321: };
1.204.2.2 paf 322: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2) };
1.20 paf 323:
1.149 parser 324: construct:
1.163 parser 325: construct_square
326: | construct_round
327: | construct_curly
1.149 parser 328: ;
329: construct_square: '[' any_constructor_code_value ']' {
330: // stack: context, name
331: $$=$2; // stack: context, name, value
1.204.2.2 paf 332: O(*$$, OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 333: }
334: ;
1.149 parser 335: construct_round: '(' expr_value ')' {
1.204.2.2 paf 336: $$=N();
337: O(*$$, OP_PREPARE_TO_EXPRESSION);
1.149 parser 338: // stack: context, name
1.204.2.2 paf 339: P(*$$, *$2); // stack: context, name, value
340: O(*$$, OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 341: }
1.52 paf 342: ;
1.149 parser 343: construct_curly: '{' maybe_codes '}' {
344: // stack: context, name
1.204.2.2 paf 345: $$=N();
346: OA(*$$, OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 347: };
348:
1.55 paf 349: any_constructor_code_value:
1.157 parser 350: void_value /* optimized $var[] case */
1.52 paf 351: | STRING /* optimized $var[STRING] case */
1.55 paf 352: | constructor_code_value /* $var[something complex] */
1.1 paf 353: ;
1.55 paf 354: constructor_code_value: constructor_code {
1.204.2.2 paf 355: $$=N();
356: OA(*$$, OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 357: /* some code that writes to that context */
358: /* context=pop; stack: context.value() */
1.1 paf 359: };
1.55 paf 360: constructor_code: codes__excluding_sole_str_literal;
1.204.2.2 paf 361: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 362:
1.1 paf 363: /* call */
364:
1.66 paf 365: call: call_value {
366: $$=$1; /* stack: value */
1.204.2.2 paf 367: changetail_or_append(*$$,
1.186 paf 368: OP_CALL, true, /*->*/ OP_CALL__WRITE,
369: /*or */OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.66 paf 370: };
1.177 paf 371: call_value: '^' {
1.180 paf 372: PC.in_call_value=true;
1.177 paf 373: }
374: call_name {
1.180 paf 375: PC.in_call_value=false;
1.177 paf 376: }
1.154 parser 377: store_params EON { /* ^field.$method{vasya} */
378: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 379:
1.154 parser 380: YYSTYPE params_code=$5;
1.204.2.2 paf 381: if(params_code->count()==3) { // probably [] case. [OP_VALUE + Void + STORE_PARAM]
382: if(ValuePtr value=LA2V(*params_code)) // it is OP_VALUE + value?
1.140 parser 383: if(!value->is_defined()) // value is VVoid?
1.204.2.2 paf 384: params_code=YYSTYPE(0); // ^zzz[] case. don't append lone empty param.
1.186 paf 385: }
386: /* stack: context, method_junction */
1.204.2.2 paf 387: OA(*$$, OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
1.1 paf 388: };
389:
1.43 paf 390: call_name: name_without_curly_rdive;
1.38 paf 391:
1.204.2.2 paf 392: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2) };
1.69 paf 393: store_param:
394: store_square_param
395: | store_round_param
396: | store_curly_param
1.31 paf 397: ;
1.123 paf 398: store_square_param: '[' store_code_param_parts ']' {$$=$2};
1.69 paf 399: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 400: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 401: store_code_param_parts:
402: store_code_param_part
1.204.2.2 paf 403: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 404: ;
405: store_expr_param_parts:
406: store_expr_param_part
1.204.2.2 paf 407: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 408: ;
1.94 paf 409: store_curly_param_parts:
410: store_curly_param_part
1.204.2.2 paf 411: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3) }
1.94 paf 412: ;
1.120 paf 413: store_code_param_part: code_param_value {
1.32 paf 414: $$=$1;
1.204.2.2 paf 415: O(*$$, OP_STORE_PARAM);
1.120 paf 416: };
1.69 paf 417: store_expr_param_part: write_expr_value {
1.204.2.2 paf 418: $$=N();
419: OA(*$$, OP_EXPR_CODE__STORE_PARAM, $1);
1.69 paf 420: };
1.94 paf 421: store_curly_param_part: maybe_codes {
1.204.2.2 paf 422: $$=N();
423: OA(*$$, OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 424: };
1.120 paf 425: code_param_value:
1.157 parser 426: void_value /* optimized [;...] case */
1.120 paf 427: | STRING /* optimized [STRING] case */
428: | constructor_code_value /* [something complex] */
429: ;
1.90 paf 430: write_expr_value: expr_value {
1.204.2.2 paf 431: $$=N();
432: O(*$$, OP_PREPARE_TO_EXPRESSION);
433: P(*$$, *$1);
434: O(*$$, OP_WRITE_EXPR_RESULT);
1.69 paf 435: };
1.1 paf 436:
437: /* name */
438:
1.204.2.2 paf 439: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 440:
1.204.2.2 paf 441: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 442: name_step: name_advance1 '.';
443: name_advance1: name_expr_value {
1.177 paf 444: // we know that name_advance1 not called from ^xxx context
445: // so we'll not check for operator call possibility as we do in name_advance2
446:
1.1 paf 447: /* stack: context */
448: $$=$1; /* stack: context,name */
1.204.2.2 paf 449: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 450: };
451: name_advance2: name_expr_value {
452: /* stack: context */
453: $$=$1; /* stack: context,name */
1.204.2.2 paf 454: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 455: }
1.4 paf 456: | STRING BOGUS
1.1 paf 457: ;
458: name_expr_value:
1.4 paf 459: STRING /* subname_is_const */
1.1 paf 460: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 461: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 462: | name_square_code_value /* [codes] */
1.1 paf 463: ;
464: name_expr_subvar_value: '$' subvar_ref_name_rdive {
465: $$=$2;
1.204.2.2 paf 466: O(*$$, OP_GET_ELEMENT);
1.1 paf 467: };
1.4 paf 468: name_expr_with_subvar_value: STRING subvar_get_writes {
1.204.2.2 paf 469: ArrayOperationPtr code;
1.183 paf 470: {
1.204.2.2 paf 471: change_string_literal_to_write_string_literal(*(code=$1));
472: P(*code, *$2);
1.183 paf 473: }
1.204.2.2 paf 474: $$=N();
475: OA(*$$, OP_STRING_POOL, code);
1.1 paf 476: };
1.166 parser 477: name_square_code_value: '[' codes ']' {
1.204.2.2 paf 478: $$=N();
479: OA(*$$, OP_OBJECT_POOL, $2); /* stack: empty write context */
1.183 paf 480: /* some code that writes to that context */
481: /* context=pop; stack: context.value() */
1.160 parser 482: };
1.154 parser 483: subvar_ref_name_rdive: STRING {
1.204.2.2 paf 484: $$=N();
485: O(*$$, OP_WITH_READ);
486: P(*$$, *$1);
1.1 paf 487: };
1.204.2.2 paf 488: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 489: subvar__get_write: '$' subvar_ref_name_rdive {
490: $$=$2;
1.204.2.2 paf 491: O(*$$, OP_GET_ELEMENT__WRITE);
1.42 paf 492: };
493:
1.154 parser 494: class_prefix:
495: class_static_prefix
496: | class_constructor_prefix
497: ;
1.155 parser 498: class_static_prefix: STRING ':' {
499: $$=$1; // stack: class name string
1.204.2.2 paf 500: if(*LA2S(*$$) == BASE_NAME) { // pseude BASE class
1.204.2.3 paf 501: if(VStateless_class* base=PC.cclass->base_class()) {
1.204.2.2 paf 502: change_string_literal_value(*$$, base->name());
1.189 paf 503: } else {
504: strcpy(PC.error, "no base class declared");
505: YYERROR;
506: }
507: }
1.204.2.2 paf 508: O(*$$, OP_GET_CLASS);
1.155 parser 509: };
510: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 511: $$=$1;
1.180 paf 512: if(!PC.in_call_value) {
1.154 parser 513: strcpy(PC.error, ":: not allowed here");
514: YYERROR;
515: }
1.204.2.2 paf 516: O(*$$, OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 517: };
518:
1.53 paf 519:
1.56 paf 520: /* expr */
1.53 paf 521:
1.81 paf 522: expr_value: expr {
1.182 paf 523: // see OP_PREPARE_TO_EXPRESSION!!
1.204.2.2 paf 524: if(($$=$1)->count()==2) // only one string literal in there?
525: change_string_literal_to_double_literal(*$$); // make that string literal Double
1.62 paf 526: };
1.56 paf 527: expr:
1.62 paf 528: STRING
1.64 paf 529: | get_value
1.66 paf 530: | call_value
1.64 paf 531: | '"' string_inside_quotes_value '"' { $$ = $2; }
1.145 parser 532: | '\'' string_inside_quotes_value '\'' { $$ = $2; }
1.60 paf 533: | '(' expr ')' { $$ = $2; }
534: /* stack: operand // stack: @operand */
1.204.2.2 paf 535: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP_NEG) }
1.202 paf 536: | '+' expr %prec NUNARY { $$=$2 }
1.204.2.2 paf 537: | '~' expr { $$=$2; O(*$$, OP_INV) }
538: | '!' expr { $$=$2; O(*$$, OP_NOT) }
539: | "def" expr { $$=$2; O(*$$, OP_DEF) }
540: | "in" expr { $$=$2; O(*$$, OP_IN) }
541: | "-f" expr { $$=$2; O(*$$, OP_FEXISTS) }
542: | "-d" expr { $$=$2; O(*$$, OP_DEXISTS) }
1.60 paf 543: /* stack: a,b // stack: a@b */
1.204.2.2 paf 544: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP_SUB) }
545: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP_ADD) }
546: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MUL) }
547: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP_DIV) }
548: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MOD) }
549: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP_INTDIV) }
550: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SL) }
551: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SR) }
552: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_AND) }
553: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_OR) }
554: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_XOR) }
555: | expr "&&" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_AND) }
556: | expr "||" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_OR) }
557: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP_LOG_XOR) }
558: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LT) }
559: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GT) }
560: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LE) }
561: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GE) }
562: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_EQ) }
563: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_NE) }
564: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LT) }
565: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GT) }
566: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LE) }
567: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GE) }
568: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_EQ) }
569: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_NE) }
570: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP_IS) }
1.56 paf 571: ;
1.55 paf 572:
1.65 paf 573: string_inside_quotes_value: maybe_codes {
1.204.2.2 paf 574: $$=N();
575: OA(*$$, OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 576: /* some code that writes to that context */
577: /* context=pop; stack: context.get_string() */
1.53 paf 578: };
1.1 paf 579:
1.27 paf 580: /* basics */
1.1 paf 581:
1.81 paf 582: write_string: STRING {
1.102 paf 583: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
1.204.2.2 paf 584: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 585: };
586:
1.204.2.2 paf 587: void_value: /* empty */ { $$=VL(ValuePtr(new VVoid())) };
588: empty: /* empty */ { $$=N() };
1.1 paf 589:
590: %%
1.105 paf 591: #endif
1.1 paf 592:
593: /*
594: 000$111(2222)00
595: 000$111{3333}00
1.9 paf 596: $,^: push,=0
1.1 paf 597: 1:( { break=pop
598: 2:( ) pop
599: 3:{ } pop
600:
601: 000^111(2222)4444{33333}4000
1.9 paf 602: $,^: push,=0
1.1 paf 603: 1:( { break=pop
604: 2:( )=4
605: 3:{ }=4
606: 4:[^({]=pop
607: */
608:
1.110 paf 609: static int yylex(YYSTYPE *lvalp, void *pc) {
1.177 paf 610: #define lexical_brackets_nestage PC.brackets_nestages[PC.ls_sp]
1.48 paf 611: #define RC {result=c; goto break2; }
1.1 paf 612:
613: register int c;
614: int result;
615:
1.114 paf 616: if(PC.pending_state) {
617: result=PC.pending_state;
618: PC.pending_state=0;
1.1 paf 619: return result;
620: }
621:
1.114 paf 622: const char *begin=PC.source;
1.91 paf 623: const char *end;
1.114 paf 624: int begin_line=PC.line;
1.67 paf 625: int skip_analized=0;
1.50 paf 626: while(true) {
1.114 paf 627: c=*(end=(PC.source++));
1.166 parser 628: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, PC.sp);
1.1 paf 629:
1.4 paf 630: if(c=='\n') {
1.114 paf 631: PC.line++;
632: PC.col=0;
1.10 paf 633: } else
1.114 paf 634: PC.col++;
1.73 paf 635:
1.171 parser 636: if(c=='@' && PC.col==0+1) {
1.175 paf 637: if(PC.ls==LS_DEF_SPECIAL_BODY) {
638: // @SPECIAL
639: // ...
640: // @<here =
641: pop_LS(PC); // exiting from LS_DEF_SPECIAL_BODY state
642: } // continuing checks
1.171 parser 643: if(PC.ls==LS_USER) {
644: push_LS(PC, LS_DEF_NAME);
645: RC;
1.175 paf 646: } else // @ in first column inside some code [when could that be?]
1.171 parser 647: result=BAD_METHOD_DECL_START;
648: goto break2;
1.203 paf 649: } else if(c=='^') {
650: if(PC.ls==LS_METHOD_AFTER) {
651: // handle after-method situation
652: pop_LS(PC);
653: result=EON;
654: skip_analized=-1; // return to punctuation afterwards to assure it's literality
655: goto break2;
656: }
1.169 parser 657: switch(PC.ls) {
658: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
659: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
660: case LS_VAR_NAME_SIMPLE_WITH_COLON:
661: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
662: case LS_VAR_NAME_CURLY:
663: case LS_METHOD_NAME:
1.194 paf 664: case LS_USER_COMMENT:
1.169 parser 665: case LS_DEF_COMMENT:
666: // no literals in names, please
667: break;
668: default:
1.114 paf 669: switch(*PC.source) {
1.165 parser 670: // ^escaping some punctuators
1.48 paf 671: case '^': case '$': case ';':
1.126 paf 672: case '(': case ')':
1.48 paf 673: case '[': case ']':
674: case '{': case '}':
1.172 parser 675: case '"': case ':':
1.40 paf 676: if(end!=begin) {
677: // append piece till ^
1.121 paf 678: PC.string->APPEND_CLEAN(begin, end-begin, PC.file, begin_line);
1.40 paf 679: }
1.63 paf 680: // reset piece 'begin' position & line
1.203 paf 681: begin=PC.source; // ->punctuation
1.114 paf 682: begin_line=PC.line;
1.203 paf 683: // skip over _ after ^
684: PC.source++; PC.col++;
685: // skip analysis = forced literal
686: continue;
1.114 paf 687:
688: // converting ^#HH into char(hex(HH))
689: case '#':
690: if(end!=begin) {
691: // append piece till ^
1.121 paf 692: PC.string->APPEND_CLEAN(begin, end-begin, PC.file, begin_line);
1.114 paf 693: }
694: // #HH ?
695: if(PC.source[0]=='#' && PC.source[1] && PC.source[2]) {
696: char *hex=(char *)POOL.malloc(1);
697: hex[0]=
698: hex_value[(unsigned char)PC.source[1]]*0x10+
699: hex_value[(unsigned char)PC.source[2]];
700: if(hex[0]==0) {
701: result=BAD_HEX_LITERAL;
702: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
703: }
704: // append char(hex(HH))
1.121 paf 705: PC.string->APPEND_CLEAN(hex, 1, PC.file, begin_line);
1.114 paf 706: // skip over ^#HH
707: PC.source+=3;
708: PC.col+=3;
709: // reset piece 'begin' position & line
1.203 paf 710: begin=PC.source; // ->after ^#HH
1.114 paf 711: begin_line=PC.line;
1.203 paf 712: // skip analysis = forced literal
1.114 paf 713: continue;
714: }
715: break;
1.1 paf 716: }
1.169 parser 717: break;
1.203 paf 718: }
1.169 parser 719: }
1.113 paf 720: // #comment start skipping
1.114 paf 721: if(c=='#' && PC.col==1) {
1.112 paf 722: if(end!=begin) {
723: // append piece till #
1.121 paf 724: PC.string->APPEND_CLEAN(begin, end-begin, PC.file, begin_line);
1.112 paf 725: }
726: // fall into COMMENT lexical state [wait for \n]
1.194 paf 727: push_LS(PC, LS_USER_COMMENT);
1.175 paf 728: continue;
1.112 paf 729: }
1.114 paf 730: switch(PC.ls) {
1.10 paf 731:
732: // USER'S = NOT OURS
1.1 paf 733: case LS_USER:
1.166 parser 734: case LS_NAME_SQUARE_PART: // name.[here].xxx
1.153 parser 735: if(PC.trim_bof)
736: switch(c) {
737: case '\n': case ' ': case '\t':
1.152 parser 738: begin=PC.source;
739: begin_line=PC.line;
740: continue; // skip it
1.153 parser 741: default:
742: PC.trim_bof=false;
1.152 parser 743: }
1.48 paf 744: switch(c) {
745: case '$':
1.166 parser 746: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 747: RC;
748: case '^':
749: push_LS(PC, LS_METHOD_NAME);
750: RC;
1.166 parser 751: case ']':
752: if(PC.ls==LS_NAME_SQUARE_PART)
753: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
754: pop_LS(PC); // $name.[co<]>de<]!>
755: RC;
756: }
1.160 parser 757: break;
1.166 parser 758: case '[': // $name.[co<[>de]
759: if(PC.ls==LS_NAME_SQUARE_PART)
760: lexical_brackets_nestage++;
1.161 parser 761: break;
1.112 paf 762: }
763: break;
764:
765: // #COMMENT
1.194 paf 766: case LS_USER_COMMENT:
1.112 paf 767: if(c=='\n') {
768: // skip comment
1.114 paf 769: begin=PC.source;
770: begin_line=PC.line;
1.112 paf 771:
772: pop_LS(PC);
773: continue;
1.1 paf 774: }
1.48 paf 775: break;
776:
777: // STRING IN EXPRESSION
1.145 parser 778: case LS_EXPRESSION_STRING_QUOTED:
779: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 780: switch(c) {
781: case '"':
1.145 parser 782: case '\'':
783: if(
784: PC.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
785: PC.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
786: pop_LS(PC); //"abc". | 'abc'.
787: RC;
788: }
789: break;
1.48 paf 790: case '$':
1.166 parser 791: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 792: RC;
793: case '^':
1.10 paf 794: push_LS(PC, LS_METHOD_NAME);
1.48 paf 795: RC;
1.10 paf 796: }
797: break;
798:
799: // METHOD DEFINITION
800: case LS_DEF_NAME:
1.48 paf 801: switch(c) {
802: case '[':
1.114 paf 803: PC.ls=LS_DEF_PARAMS;
1.48 paf 804: RC;
805: case '\n':
1.114 paf 806: PC.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 807: RC;
1.10 paf 808: }
809: break;
1.48 paf 810:
1.10 paf 811: case LS_DEF_PARAMS:
1.48 paf 812: switch(c) {
1.192 paf 813: case '$': // common error
1.193 paf 814: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
815: goto break2;
1.48 paf 816: case ';':
817: RC;
818: case ']':
1.114 paf 819: PC.ls=*PC.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 820: RC;
1.49 paf 821: case '\n': // wrong. bailing out
1.10 paf 822: pop_LS(PC);
1.48 paf 823: RC;
1.10 paf 824: }
825: break;
1.48 paf 826:
1.10 paf 827: case LS_DEF_LOCALS:
1.48 paf 828: switch(c) {
829: case '[':
830: case ';':
831: RC;
832: case ']':
1.114 paf 833: PC.ls=LS_DEF_COMMENT;
1.48 paf 834: RC;
835: case '\n': // wrong. bailing out
1.10 paf 836: pop_LS(PC);
1.48 paf 837: RC;
1.10 paf 838: }
839: break;
1.48 paf 840:
1.10 paf 841: case LS_DEF_COMMENT:
842: if(c=='\n') {
843: pop_LS(PC);
1.48 paf 844: RC;
1.37 paf 845: }
846: break;
847:
1.48 paf 848: case LS_DEF_SPECIAL_BODY:
1.175 paf 849: if(c=='\n')
1.48 paf 850: RC;
851: break;
852:
853: // (EXPRESSION)
1.69 paf 854: case LS_VAR_ROUND:
855: case LS_METHOD_ROUND:
1.48 paf 856: switch(c) {
857: case ')':
858: if(--lexical_brackets_nestage==0)
1.114 paf 859: if(PC.ls==LS_METHOD_ROUND) // method round param ended
860: PC.ls=LS_METHOD_AFTER; // look for method end
861: else // PC.ls==LS_VAR_ROUND // variable constructor ended
1.69 paf 862: pop_LS(PC); // return to normal life
1.48 paf 863: RC;
1.194 paf 864: case '#': // comment start skipping
865: if(end!=begin) {
866: // append piece till #
867: PC.string->APPEND_CLEAN(begin, end-begin, PC.file, begin_line);
868: }
869: // fall into COMMENT lexical state [wait for \n]
870: push_LS(PC, LS_EXPRESSION_COMMENT);
871: lexical_brackets_nestage=1;
872: continue;
1.48 paf 873: case '$':
1.166 parser 874: push_LS(PC, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 875: RC;
876: case '^':
877: push_LS(PC, LS_METHOD_NAME);
878: RC;
879: case '(':
880: lexical_brackets_nestage++;
881: RC;
1.67 paf 882: case '-':
1.127 paf 883: switch(*PC.source) {
884: case 'f': // -f
1.67 paf 885: skip_analized=1;
886: result=FEXISTS;
1.127 paf 887: goto break2;
888: case 'd': // -d
889: skip_analized=1;
890: result=DEXISTS;
891: goto break2;
1.191 paf 892: default: // minus
1.67 paf 893: result=c;
1.127 paf 894: goto break2;
895: }
1.67 paf 896: goto break2;
1.173 paf 897: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 898: case '~':
1.48 paf 899: case ';':
900: RC;
1.193 paf 901: case '&': case '|':
1.114 paf 902: if(*PC.source==c) { // && ||
1.193 paf 903: result=c=='&'?LAND:LOR;
1.67 paf 904: skip_analized=1;
1.58 paf 905: } else
906: result=c;
907: goto break2;
1.193 paf 908: case '!':
909: switch(PC.source[0]) {
910: case '|': // !| !||
911: skip_analized=1;
912: if(PC.source[1]=='|') {
913: skip_analized++;
914: result=LXOR;
915: } else
916: result=NXOR;
917: goto break2;
918: case '=': // !=
919: skip_analized=1;
920: result=NNE;
921: goto break2;
922: }
923: RC;
1.195 paf 924:
925: case '<': // <<, <=, <
926: switch(*PC.source) {
927: case '<': // <[<]
928: skip_analized=1; result=NSL; break;
929: case '=': // <[=]
930: skip_analized=1; result=NLE; break;
931: default: // <[]
932: result=c; break;
933: }
934: goto break2;
935: case '>': // >>, >=, >
936: switch(*PC.source) {
937: case '>': // >[>]
938: skip_analized=1; result=NSR; break;
939: case '=': // >[=]
940: skip_analized=1; result=NGE; break;
941: default: // >[]
942: result=c; break;
943: }
944: goto break2;
945: case '=': // ==
946: switch(*PC.source) {
947: case '=': // =[=]
948: skip_analized=1; result=NEQ; break;
949: default: // =[]
950: result=c; break; // not used now
951: }
1.58 paf 952: goto break2;
1.195 paf 953:
1.48 paf 954: case '"':
1.145 parser 955: push_LS(PC, LS_EXPRESSION_STRING_QUOTED);
956: RC;
957: case '\'':
958: push_LS(PC, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 959: RC;
1.50 paf 960: case 'l': case 'g': case 'e': case 'n':
1.51 paf 961: if(end==begin) // right after whitespace
1.117 paf 962: if(isspace(PC.source[1])) {
963: switch(*PC.source) {
964: // case '?': // ok [and bad cases, yacc would bark at them]
965: case 't': // lt gt [et nt]
966: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
967: skip_analized=1;
968: goto break2;
969: case 'e': // le ge ne [ee]
970: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
971: skip_analized=1;
972: goto break2;
973: case 'q': // eq [lq gq nq]
974: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
975: skip_analized=1;
976: goto break2;
977: }
1.67 paf 978: }
979: break;
980: case 'i':
981: if(end==begin) // right after whitespace
1.117 paf 982: if(isspace(PC.source[1])) {
983: switch(PC.source[0]) {
984: case 'n': // in
1.95 paf 985: skip_analized=1;
986: result=IN;
987: goto break2;
1.117 paf 988: case 's': // is
1.95 paf 989: skip_analized=1;
990: result=IS;
991: goto break2;
992: }
1.67 paf 993: }
994: break;
995: case 'd':
996: if(end==begin) // right after whitespace
1.114 paf 997: if(PC.source[0]=='e' && PC.source[1]=='f') { // def
1.67 paf 998: skip_analized=2;
999: result=DEF;
1.58 paf 1000: goto break2;
1.50 paf 1001: }
1.48 paf 1002: break;
1003: case ' ': case '\t': case '\n':
1.63 paf 1004: if(end!=begin) { // there were a string after previous operator?
1005: result=0; // return that string
1006: goto break2;
1.48 paf 1007: }
1.63 paf 1008: // that's a leading|traling space or after-operator-space
1009: // ignoring it
1010: // reset piece 'begin' position & line
1.114 paf 1011: begin=PC.source; // after whitespace char
1012: begin_line=PC.line;
1.48 paf 1013: continue;
1.1 paf 1014: }
1015: break;
1.194 paf 1016: case LS_EXPRESSION_COMMENT:
1017: if(c=='(')
1018: lexical_brackets_nestage++;
1019:
1020: switch(*PC.source) {
1021: case '\n': case ')':
1022: if(*PC.source==')')
1023: if(--lexical_brackets_nestage!=0)
1024: continue;
1025:
1026: // skip comment
1027: begin=PC.source;
1028: begin_line=PC.line;
1029:
1030: pop_LS(PC);
1031: continue;
1032: }
1033: break;
1.1 paf 1034:
1.10 paf 1035: // VARIABLE GET/PUT/WITH
1.166 parser 1036: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1037: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1038: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1039: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1040: if(
1041: PC.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1042: PC.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1043: // name in expr ends also before
1.48 paf 1044: switch(c) {
1.181 paf 1045: // expression minus
1.92 paf 1046: case '-':
1.181 paf 1047: // expression integer division
1048: case '\\':
1.48 paf 1049: pop_LS(PC);
1.114 paf 1050: PC.source--; if(--PC.col<0) { PC.line--; PC.col=-1; }
1.48 paf 1051: result=EON;
1052: goto break2;
1053: }
1054: }
1.166 parser 1055: if(
1056: PC.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1057: PC.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1058: // name already has ':', stop before next
1059: switch(c) {
1060: case ':':
1061: pop_LS(PC);
1062: PC.source--; if(--PC.col<0) { PC.line--; PC.col=-1; }
1063: result=EON;
1064: goto break2;
1065: }
1066: }
1.48 paf 1067: switch(c) {
1068: case 0:
1069: case ' ': case '\t': case '\n':
1070: case ';':
1.126 paf 1071: case ']': case '}': case ')':
1072: case '"': case '\'':
1.139 parser 1073: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1074: case '+': case '*': case '/': case '%':
1075: case '&': case '|':
1076: case '=': case '!':
1.99 paf 1077: // common delimiters
1.190 paf 1078: case ',': case '?': case '#':
1.139 parser 1079: // before call
1080: case '^':
1.1 paf 1081: pop_LS(PC);
1.114 paf 1082: PC.source--; if(--PC.col<0) { PC.line--; PC.col=-1; }
1.13 paf 1083: result=EON;
1.1 paf 1084: goto break2;
1.48 paf 1085: case '[':
1.162 parser 1086: // $name.<[>code]
1087: if(PC.col>1/*not first column*/ && (
1.163 parser 1088: end[-1]=='$'/*was start of get*/ ||
1089: end[-1]==':'/*was class name delim */ ||
1090: end[-1]=='.'/*was name delim */
1.162 parser 1091: )) {
1.166 parser 1092: push_LS(PC, LS_NAME_SQUARE_PART);
1.162 parser 1093: lexical_brackets_nestage=1;
1094: RC;
1095: }
1.114 paf 1096: PC.ls=LS_VAR_SQUARE;
1.1 paf 1097: lexical_brackets_nestage=1;
1.48 paf 1098: RC;
1099: case '{':
1100: if(begin==end) { // ${name}, no need of EON, switching LS
1.114 paf 1101: PC.ls=LS_VAR_NAME_CURLY;
1.48 paf 1102: } else {
1.114 paf 1103: PC.ls=LS_VAR_CURLY;
1.48 paf 1104: lexical_brackets_nestage=1;
1105: }
1.69 paf 1106:
1.48 paf 1107: RC;
1108: case '(':
1.114 paf 1109: PC.ls=LS_VAR_ROUND;
1.1 paf 1110: lexical_brackets_nestage=1;
1.48 paf 1111: RC;
1112: case '.': // name part delim
1113: case '$': // name part subvar
1.160 parser 1114: case ':': // class<:>name
1.166 parser 1115: // go to _WITHOUT_COLON state variant...
1116: if(PC.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1117: PC.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1118: else if(PC.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1119: PC.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1120: // ...stop before next ':'
1.48 paf 1121: RC;
1.1 paf 1122: }
1123: break;
1.48 paf 1124:
1.1 paf 1125: case LS_VAR_NAME_CURLY:
1.48 paf 1126: switch(c) {
1.162 parser 1127: case '[':
1.166 parser 1128: // ${name.<[>code]}
1129: push_LS(PC, LS_NAME_SQUARE_PART);
1.160 parser 1130: lexical_brackets_nestage=1;
1131: RC;
1.48 paf 1132: case '}': // ${name} finished, restoring LS
1.1 paf 1133: pop_LS(PC);
1.48 paf 1134: RC;
1135: case '.': // name part delim
1136: case '$': // name part subvar
1137: case ':': // ':name' or 'class:name'
1138: RC;
1.1 paf 1139: }
1140: break;
1.48 paf 1141:
1142: case LS_VAR_SQUARE:
1143: switch(c) {
1144: case '$':
1.166 parser 1145: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1146: RC;
1147: case '^':
1.10 paf 1148: push_LS(PC, LS_METHOD_NAME);
1.48 paf 1149: RC;
1150: case ']':
1.1 paf 1151: if(--lexical_brackets_nestage==0) {
1152: pop_LS(PC);
1.48 paf 1153: RC;
1.1 paf 1154: }
1.48 paf 1155: break;
1156: case ';': // operator_or_fmt;value delim
1157: RC;
1158: case '[':
1159: lexical_brackets_nestage++;
1160: break;
1.1 paf 1161: }
1162: break;
1.48 paf 1163:
1.1 paf 1164: case LS_VAR_CURLY:
1.48 paf 1165: switch(c) {
1166: case '$':
1.166 parser 1167: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1168: RC;
1169: case '^':
1.10 paf 1170: push_LS(PC, LS_METHOD_NAME);
1.48 paf 1171: RC;
1172: case '}':
1.1 paf 1173: if(--lexical_brackets_nestage==0) {
1174: pop_LS(PC);
1.48 paf 1175: RC;
1.1 paf 1176: }
1.48 paf 1177: break;
1178: case '{':
1.1 paf 1179: lexical_brackets_nestage++;
1.48 paf 1180: break;
1181: }
1.1 paf 1182: break;
1183:
1.10 paf 1184: // METHOD CALL
1.1 paf 1185: case LS_METHOD_NAME:
1.48 paf 1186: switch(c) {
1187: case '[':
1.166 parser 1188: // ^name.<[>code].xxx
1.162 parser 1189: if(PC.col>1/*not first column*/ && (
1.163 parser 1190: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1191: end[-1]==':'/*was class name delim */ ||
1192: end[-1]=='.'/*was name delim */
1.162 parser 1193: )) {
1.166 parser 1194: push_LS(PC, LS_NAME_SQUARE_PART);
1.162 parser 1195: lexical_brackets_nestage=1;
1196: RC;
1197: }
1.114 paf 1198: PC.ls=LS_METHOD_SQUARE;
1.1 paf 1199: lexical_brackets_nestage=1;
1.48 paf 1200: RC;
1201: case '{':
1.114 paf 1202: PC.ls=LS_METHOD_CURLY;
1.1 paf 1203: lexical_brackets_nestage=1;
1.48 paf 1204: RC;
1.69 paf 1205: case '(':
1.114 paf 1206: PC.ls=LS_METHOD_ROUND;
1.69 paf 1207: lexical_brackets_nestage=1;
1208: RC;
1.48 paf 1209: case '.': // name part delim
1210: case '$': // name part subvar
1211: case ':': // ':name' or 'class:name'
1.170 parser 1212: case '^': // ^abc^xxx wrong. bailing out
1213: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.48 paf 1214: RC;
1.1 paf 1215: }
1216: break;
1.48 paf 1217:
1218: case LS_METHOD_SQUARE:
1219: switch(c) {
1220: case '$':
1.166 parser 1221: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1222: RC;
1223: case '^':
1.10 paf 1224: push_LS(PC, LS_METHOD_NAME);
1.48 paf 1225: RC;
1226: case ';': // param delim
1227: RC;
1228: case ']':
1.1 paf 1229: if(--lexical_brackets_nestage==0) {
1.114 paf 1230: PC.ls=LS_METHOD_AFTER;
1.48 paf 1231: RC;
1.1 paf 1232: }
1.48 paf 1233: break;
1234: case '[':
1.1 paf 1235: lexical_brackets_nestage++;
1.48 paf 1236: break;
1237: }
1.1 paf 1238: break;
1.48 paf 1239:
1.1 paf 1240: case LS_METHOD_CURLY:
1.48 paf 1241: switch(c) {
1242: case '$':
1.166 parser 1243: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1244: RC;
1245: case '^':
1.10 paf 1246: push_LS(PC, LS_METHOD_NAME);
1.94 paf 1247: RC;
1248: case ';': // param delim
1.48 paf 1249: RC;
1250: case '}':
1.1 paf 1251: if(--lexical_brackets_nestage==0) {
1.114 paf 1252: PC.ls=LS_METHOD_AFTER;
1.48 paf 1253: RC;
1.1 paf 1254: }
1.48 paf 1255: break;
1256: case '{':
1.1 paf 1257: lexical_brackets_nestage++;
1.48 paf 1258: break;
1259: }
1.1 paf 1260: break;
1.48 paf 1261:
1.1 paf 1262: case LS_METHOD_AFTER:
1.69 paf 1263: if(c=='[') {/* ][ }[ )[ */
1.114 paf 1264: PC.ls=LS_METHOD_SQUARE;
1.1 paf 1265: lexical_brackets_nestage=1;
1.48 paf 1266: RC;
1.1 paf 1267: }
1.69 paf 1268: if(c=='{') {/* ]{ }{ ){ */
1.114 paf 1269: PC.ls=LS_METHOD_CURLY;
1.69 paf 1270: lexical_brackets_nestage=1;
1271: RC;
1272: }
1273: if(c=='(') {/* ]( }( )( */
1.114 paf 1274: PC.ls=LS_METHOD_ROUND;
1.1 paf 1275: lexical_brackets_nestage=1;
1.48 paf 1276: RC;
1.1 paf 1277: }
1278: pop_LS(PC);
1.114 paf 1279: PC.source--; if(--PC.col<0) { PC.line--; PC.col=-1; }
1.13 paf 1280: result=EON;
1.1 paf 1281: goto break2;
1282: }
1.9 paf 1283: if(c==0) {
1.1 paf 1284: result=-1;
1285: break;
1286: }
1287: }
1288:
1289: break2:
1.59 paf 1290: if(end!=begin) { // there is last piece?
1291: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1292: // strip last \n
1.10 paf 1293: end--;
1.137 parser 1294: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1295: end--;
1.59 paf 1296: }
1.194 paf 1297: if(end!=begin && PC.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1.59 paf 1298: // append it
1.121 paf 1299: PC.string->APPEND_CLEAN(begin, end-begin, PC.file, begin_line/*, start_col*/);
1.30 paf 1300: }
1.59 paf 1301: }
1.114 paf 1302: if(PC.string->size()) { // something accumulated?
1.17 paf 1303: // create STRING value: array of OP_VALUE+vstring
1.204.2.2 paf 1304: *lvalp=VL(ValuePtr(new VString(PC.string)));
1.10 paf 1305: // new pieces storage
1.204.2.2 paf 1306: PC.string=StringPtr(new String);
1.58 paf 1307: // make current result be pending for next call, return STRING for now
1.114 paf 1308: PC.pending_state=result; result=STRING;
1.58 paf 1309: }
1.67 paf 1310: if(skip_analized) {
1.114 paf 1311: PC.source+=skip_analized; PC.col+=skip_analized;
1.1 paf 1312: }
1.58 paf 1313: return result;
1.1 paf 1314: }
1315:
1.110 paf 1316: static int real_yyerror(parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1317: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1318: return 1;
1.110 paf 1319: }
1.1 paf 1320:
1.110 paf 1321: static void yyprint(FILE *file, int type, YYSTYPE value) {
1322: if(type==STRING)
1.204.2.2 paf 1323: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1324: }
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