Annotation of parser3/src/main/compile.y, revision 1.204.2.8
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:
1.204.2.8! paf 8: $Id: compile.y,v 1.204.2.7 2003/03/11 14:58:33 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
1.204.2.8! paf 47: #undef PC
1.114 paf 48: #define PC (*(parse_control *)pc)
1.204.2.8! paf 49: #undef POOL
1.114 paf 50: #define POOL (*PC.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
1.204.2.5 paf 151: VStateless_classPtr cclass(new VClass);
152: PC.cclass=cclass.get();
1.204.2.2 paf 153: PC.cclass->set_name(name);
1.73 paf 154: // append to request's classes
1.204.2.5 paf 155: PC.request->classes().put(name, 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: }
1.204.2.2 paf 160: } else if(*command==USE_CONTROL_METHOD_NAME) {
161: for(int i=0; i<strings_code->count(); i+=2)
1.204.2.4 paf 162: PC.request->use_file(*PC.request->main_class, LA2S(*strings_code, i));
1.204.2.2 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 '");
1.204.2.2 paf 166: strncat(PC.error, PC.cclass->base_class()->name()->cstr(), 100);
1.130 paf 167: strcat(PC.error, "'");
168: YYERROR;
169: }
1.204.2.2 paf 170: if(strings_code->count()==1*2) {
1.204.2.3 paf 171: StringPtr base_name=LA2S(*strings_code);
172: if(ValuePtr base_class_value=PC.request->classes().get(base_name)) {
1.204.2.2 paf 173: // @CLASS == @BASE sanity check
1.204.2.3 paf 174: if(VStateless_class *base_class=base_class_value->get_class()) {
1.204.2.5 paf 175: if(PC.cclass==base_class) {
1.204.2.3 paf 176: strcpy(PC.error, "@"CLASS_NAME" equals @"BASE_NAME);
177: YYERROR;
178: }
179: PC.cclass->get_class()->set_base(base_class);
180: } else { // they asked to derive from a class without methods ['env' & co]
181: strcpy(PC.error, base_name->cstr());
182: strcat(PC.error, ": you can not derive from this class in @"BASE_NAME);
1.204.2.2 paf 183: YYERROR;
184: }
185: } else {
186: strcpy(PC.error, base_name->cstr());
1.130 paf 187: strcat(PC.error, ": undefined class in @"BASE_NAME);
1.73 paf 188: YYERROR;
189: }
1.34 paf 190: } else {
1.130 paf 191: strcpy(PC.error, "@"BASE_NAME" must contain sole name");
1.34 paf 192: YYERROR;
193: }
1.130 paf 194: } else {
195: strcpy(PC.error, "'");
1.204.2.2 paf 196: strncat(PC.error, command->cstr(), MAX_STRING/2);
1.130 paf 197: strcat(PC.error, "' invalid special name. valid names are "
198: "'"CLASS_NAME"', '"USE_CONTROL_METHOD_NAME"' and '"BASE_NAME"'");
199: YYERROR;
1.34 paf 200: }
201: };
1.132 paf 202: maybe_control_strings: empty | control_strings;
1.204.2.2 paf 203: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2) };
1.37 paf 204: control_string: maybe_string '\n';
205: maybe_string: empty | STRING;
1.34 paf 206:
207: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n'
1.10 paf 208: maybe_codes {
1.204.2.3 paf 209: StringPtr name=LA2S(*$2);
1.10 paf 210:
211: YYSTYPE params_names_code=$3;
1.204.2.3 paf 212: ArrayStringPtr params_names;
1.204.2.2 paf 213: if(int size=params_names_code->count()) {
1.204.2.3 paf 214: params_names=ArrayStringPtr(new ArrayString);
1.75 paf 215: for(int i=0; i<size; i+=2)
1.204.2.2 paf 216: *params_names+=LA2S(*params_names_code, i);
1.75 paf 217: }
1.10 paf 218:
219: YYSTYPE locals_names_code=$4;
1.204.2.3 paf 220: ArrayStringPtr locals_names;
1.204.2.2 paf 221: if(int size=locals_names_code->count()) {
1.204.2.3 paf 222: locals_names=ArrayStringPtr(new ArrayString);
1.75 paf 223: for(int i=0; i<size; i+=2)
1.204.2.2 paf 224: *locals_names+=LA2S(*locals_names_code, i);
1.75 paf 225: }
1.10 paf 226:
1.204.2.2 paf 227: MethodPtr method(new Method(
228: name,
1.122 paf 229: Method::CT_ANY,
1.81 paf 230: 0, 0/*min,max numbered_params_count*/,
1.76 paf 231: params_names, locals_names,
1.204.2.2 paf 232: $7, 0));
233: PC.cclass->add_method(name, method);
1.8 paf 234: };
1.10 paf 235:
236: maybe_bracketed_strings: empty | bracketed_maybe_strings;
237: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
238: maybe_strings: empty | strings;
1.204.2.2 paf 239: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3) };
1.10 paf 240:
241: maybe_comment: empty | STRING;
1.1 paf 242:
243: /* codes */
244:
1.10 paf 245: maybe_codes: empty | codes;
246:
1.204.2.2 paf 247: codes: code | codes code { $$=$1; P(*$$, *$2) };
1.81 paf 248: code: write_string | action;
1.149 parser 249: action: get | put | call;
1.1 paf 250:
251: /* get */
252:
1.64 paf 253: get: get_value {
1.184 paf 254: $$=$1; /* stack: resulting value */
1.204.2.2 paf 255: changetail_or_append(*$$,
1.186 paf 256: OP_GET_ELEMENT, false, /*->*/OP_GET_ELEMENT__WRITE,
257: /*or */OP_WRITE_VALUE
1.184 paf 258: ); /* value=pop; wcontext.write(value) */
1.1 paf 259: };
1.163 parser 260: get_value: '$' get_name_value { $$=$2 };
1.64 paf 261: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 262: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 263: name_without_curly_rdive:
264: name_without_curly_rdive_read
265: | name_without_curly_rdive_class;
1.19 paf 266: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.204.2.2 paf 267: $$=N();
268: ArrayOperationPtr diving_code=$1;
1.204.2.3 paf 269: StringPtr first_name=LA2S(*diving_code);
1.179 paf 270: // self.xxx... -> xxx...
271: // OP_VALUE+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 272: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.204.2.2 paf 273: O(*$$, OP_WITH_SELF); /* stack: starting context */
274: P(*$$, *diving_code,
1.22 paf 275: /* skip over... */
1.204.2.2 paf 276: diving_code->count()>=3?3/*OP_VALUE+string+OP_GET_ELEMENTx*/:2/*OP_+string*/);
1.22 paf 277: } else {
1.204.2.2 paf 278: O(*$$, OP_WITH_READ); /* stack: starting context */
1.179 paf 279:
1.201 paf 280: // ^if ELEMENT -> ^if ELEMENT_OR_OPERATOR
281: // OP_VALUE+string+OP_GET_ELEMENT. -> OP_VALUE+string+OP_GET_ELEMENT_OR_OPERATOR.
1.204.2.2 paf 282: if(PC.in_call_value && diving_code->count()==3)
283: (*diving_code)[2].code=OP_GET_ELEMENT_OR_OPERATOR;
284: P(*$$, *diving_code);
1.22 paf 285: }
286: /* diving code; stack: current context */
1.1 paf 287: };
1.204.2.2 paf 288: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2) };
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: $$=$2; /* stack: context,name */
1.204.2.2 paf 295: P(*$$, *$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 {
1.204.2.2 paf 302: $$=N();
303: ArrayOperationPtr diving_code=$1;
1.204.2.3 paf 304: StringPtr first_name=LA2S(*diving_code);
1.179 paf 305: // $self.xxx... -> $xxx...
306: // OP_VALUE+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 307: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.204.2.2 paf 308: O(*$$, OP_WITH_SELF); /* stack: starting context */
309: P(*$$, *diving_code,
1.23 paf 310: /* skip over... */
1.204.2.2 paf 311: diving_code->count()>=3?3/*OP_VALUE+string+OP_GET_ELEMENTx*/:2/*OP_+string*/);
1.23 paf 312: } else {
1.204.2.2 paf 313: O(*$$, OP_WITH_ROOT); /* stack: starting context */
314: P(*$$, *diving_code);
1.23 paf 315: }
316: /* diving code; stack: current context */
1.156 parser 317: };
1.157 parser 318: name_expr_wdive_write: '.' name_expr_dive_code {
1.204.2.2 paf 319: $$=N();
320: O(*$$, OP_WITH_WRITE); /* stack: starting context */
321: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 322: };
1.204.2.2 paf 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: $$=$2; // stack: context, name, value
1.204.2.2 paf 333: O(*$$, OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 334: }
335: ;
1.149 parser 336: construct_round: '(' expr_value ')' {
1.204.2.2 paf 337: $$=N();
338: O(*$$, OP_PREPARE_TO_EXPRESSION);
1.149 parser 339: // stack: context, name
1.204.2.2 paf 340: P(*$$, *$2); // stack: context, name, value
341: O(*$$, 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
1.204.2.2 paf 346: $$=N();
347: OA(*$$, 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 {
1.204.2.2 paf 356: $$=N();
357: OA(*$$, 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;
1.204.2.2 paf 362: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 363:
1.1 paf 364: /* call */
365:
1.66 paf 366: call: call_value {
367: $$=$1; /* stack: value */
1.204.2.2 paf 368: changetail_or_append(*$$,
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: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 380:
1.154 parser 381: YYSTYPE params_code=$5;
1.204.2.2 paf 382: if(params_code->count()==3) { // probably [] case. [OP_VALUE + Void + STORE_PARAM]
383: if(ValuePtr value=LA2V(*params_code)) // it is OP_VALUE + value?
1.140 parser 384: if(!value->is_defined()) // value is VVoid?
1.204.2.2 paf 385: params_code=YYSTYPE(0); // ^zzz[] case. don't append lone empty param.
1.186 paf 386: }
387: /* stack: context, method_junction */
1.204.2.2 paf 388: OA(*$$, 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:
1.204.2.2 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 '}' {$$=$2};
1.69 paf 402: store_code_param_parts:
403: store_code_param_part
1.204.2.2 paf 404: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 405: ;
406: store_expr_param_parts:
407: store_expr_param_part
1.204.2.2 paf 408: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 409: ;
1.94 paf 410: store_curly_param_parts:
411: store_curly_param_part
1.204.2.2 paf 412: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3) }
1.94 paf 413: ;
1.120 paf 414: store_code_param_part: code_param_value {
1.32 paf 415: $$=$1;
1.204.2.2 paf 416: O(*$$, OP_STORE_PARAM);
1.120 paf 417: };
1.69 paf 418: store_expr_param_part: write_expr_value {
1.204.2.2 paf 419: $$=N();
420: OA(*$$, OP_EXPR_CODE__STORE_PARAM, $1);
1.69 paf 421: };
1.94 paf 422: store_curly_param_part: maybe_codes {
1.204.2.2 paf 423: $$=N();
424: OA(*$$, OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 425: };
1.120 paf 426: code_param_value:
1.157 parser 427: void_value /* optimized [;...] case */
1.120 paf 428: | STRING /* optimized [STRING] case */
429: | constructor_code_value /* [something complex] */
430: ;
1.90 paf 431: write_expr_value: expr_value {
1.204.2.2 paf 432: $$=N();
433: O(*$$, OP_PREPARE_TO_EXPRESSION);
434: P(*$$, *$1);
435: O(*$$, OP_WRITE_EXPR_RESULT);
1.69 paf 436: };
1.1 paf 437:
438: /* name */
439:
1.204.2.2 paf 440: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 441:
1.204.2.2 paf 442: name_path: name_step | name_path name_step { $$=$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 */
1.204.2.2 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 */
1.204.2.2 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;
1.204.2.2 paf 467: O(*$$, OP_GET_ELEMENT);
1.1 paf 468: };
1.4 paf 469: name_expr_with_subvar_value: STRING subvar_get_writes {
1.204.2.2 paf 470: ArrayOperationPtr code;
1.183 paf 471: {
1.204.2.2 paf 472: change_string_literal_to_write_string_literal(*(code=$1));
473: P(*code, *$2);
1.183 paf 474: }
1.204.2.2 paf 475: $$=N();
476: OA(*$$, OP_STRING_POOL, code);
1.1 paf 477: };
1.166 parser 478: name_square_code_value: '[' codes ']' {
1.204.2.2 paf 479: $$=N();
480: OA(*$$, OP_OBJECT_POOL, $2); /* stack: empty write context */
1.183 paf 481: /* some code that writes to that context */
482: /* context=pop; stack: context.value() */
1.160 parser 483: };
1.154 parser 484: subvar_ref_name_rdive: STRING {
1.204.2.2 paf 485: $$=N();
486: O(*$$, OP_WITH_READ);
487: P(*$$, *$1);
1.1 paf 488: };
1.204.2.2 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: $$=$2;
1.204.2.2 paf 492: O(*$$, 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: $$=$1; // stack: class name string
1.204.2.2 paf 501: if(*LA2S(*$$) == BASE_NAME) { // pseude BASE class
1.204.2.3 paf 502: if(VStateless_class* base=PC.cclass->base_class()) {
1.204.2.2 paf 503: change_string_literal_value(*$$, base->name());
1.189 paf 504: } else {
505: strcpy(PC.error, "no base class declared");
506: YYERROR;
507: }
508: }
1.204.2.2 paf 509: O(*$$, OP_GET_CLASS);
1.155 parser 510: };
511: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 512: $$=$1;
1.180 paf 513: if(!PC.in_call_value) {
1.154 parser 514: strcpy(PC.error, ":: not allowed here");
515: YYERROR;
516: }
1.204.2.2 paf 517: O(*$$, 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!!
1.204.2.2 paf 525: if(($$=$1)->count()==2) // only one string literal in there?
526: change_string_literal_to_double_literal(*$$); // make that string literal Double
1.62 paf 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 ')' { $$ = $2; }
535: /* stack: operand // stack: @operand */
1.204.2.2 paf 536: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP_NEG) }
1.202 paf 537: | '+' expr %prec NUNARY { $$=$2 }
1.204.2.2 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) }
543: | "-d" expr { $$=$2; O(*$$, OP_DEXISTS) }
1.60 paf 544: /* stack: a,b // stack: a@b */
1.204.2.2 paf 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(*$$, OP_MOD) }
550: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP_INTDIV) }
551: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SL) }
552: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SR) }
553: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_AND) }
554: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_OR) }
555: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_XOR) }
556: | expr "&&" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_AND) }
557: | expr "||" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_OR) }
558: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP_LOG_XOR) }
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) }
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) }
571: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP_IS) }
1.56 paf 572: ;
1.55 paf 573:
1.65 paf 574: string_inside_quotes_value: maybe_codes {
1.204.2.2 paf 575: $$=N();
576: OA(*$$, OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 577: /* some code that writes to that context */
578: /* context=pop; stack: context.get_string() */
1.53 paf 579: };
1.1 paf 580:
1.27 paf 581: /* basics */
1.1 paf 582:
1.81 paf 583: write_string: STRING {
1.102 paf 584: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
1.204.2.2 paf 585: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 586: };
587:
1.204.2.2 paf 588: void_value: /* empty */ { $$=VL(ValuePtr(new VVoid())) };
589: empty: /* empty */ { $$=N() };
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;
1.203 paf 650: } else if(c=='^') {
651: if(PC.ls==LS_METHOD_AFTER) {
652: // handle after-method situation
653: pop_LS(PC);
654: result=EON;
655: skip_analized=-1; // return to punctuation afterwards to assure it's literality
656: goto break2;
657: }
1.169 parser 658: switch(PC.ls) {
659: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
660: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
661: case LS_VAR_NAME_SIMPLE_WITH_COLON:
662: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
663: case LS_VAR_NAME_CURLY:
664: case LS_METHOD_NAME:
1.194 paf 665: case LS_USER_COMMENT:
1.169 parser 666: case LS_DEF_COMMENT:
667: // no literals in names, please
668: break;
669: default:
1.114 paf 670: switch(*PC.source) {
1.165 parser 671: // ^escaping some punctuators
1.48 paf 672: case '^': case '$': case ';':
1.126 paf 673: case '(': case ')':
1.48 paf 674: case '[': case ']':
675: case '{': case '}':
1.172 parser 676: case '"': case ':':
1.40 paf 677: if(end!=begin) {
678: // append piece till ^
1.121 paf 679: PC.string->APPEND_CLEAN(begin, end-begin, PC.file, begin_line);
1.40 paf 680: }
1.63 paf 681: // reset piece 'begin' position & line
1.203 paf 682: begin=PC.source; // ->punctuation
1.114 paf 683: begin_line=PC.line;
1.203 paf 684: // skip over _ after ^
685: PC.source++; PC.col++;
686: // skip analysis = forced literal
687: continue;
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
1.203 paf 711: begin=PC.source; // ->after ^#HH
1.114 paf 712: begin_line=PC.line;
1.203 paf 713: // skip analysis = forced literal
1.114 paf 714: continue;
715: }
716: break;
1.1 paf 717: }
1.169 parser 718: break;
1.203 paf 719: }
1.169 parser 720: }
1.113 paf 721: // #comment start skipping
1.114 paf 722: if(c=='#' && PC.col==1) {
1.112 paf 723: if(end!=begin) {
724: // append piece till #
1.121 paf 725: PC.string->APPEND_CLEAN(begin, end-begin, PC.file, begin_line);
1.112 paf 726: }
727: // fall into COMMENT lexical state [wait for \n]
1.194 paf 728: push_LS(PC, LS_USER_COMMENT);
1.175 paf 729: continue;
1.112 paf 730: }
1.114 paf 731: switch(PC.ls) {
1.10 paf 732:
733: // USER'S = NOT OURS
1.1 paf 734: case LS_USER:
1.166 parser 735: case LS_NAME_SQUARE_PART: // name.[here].xxx
1.153 parser 736: if(PC.trim_bof)
737: switch(c) {
738: case '\n': case ' ': case '\t':
1.152 parser 739: begin=PC.source;
740: begin_line=PC.line;
741: continue; // skip it
1.153 parser 742: default:
743: PC.trim_bof=false;
1.152 parser 744: }
1.48 paf 745: switch(c) {
746: case '$':
1.166 parser 747: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 748: RC;
749: case '^':
750: push_LS(PC, LS_METHOD_NAME);
751: RC;
1.166 parser 752: case ']':
753: if(PC.ls==LS_NAME_SQUARE_PART)
754: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
755: pop_LS(PC); // $name.[co<]>de<]!>
756: RC;
757: }
1.160 parser 758: break;
1.166 parser 759: case '[': // $name.[co<[>de]
760: if(PC.ls==LS_NAME_SQUARE_PART)
761: lexical_brackets_nestage++;
1.161 parser 762: break;
1.112 paf 763: }
764: break;
765:
766: // #COMMENT
1.194 paf 767: case LS_USER_COMMENT:
1.112 paf 768: if(c=='\n') {
769: // skip comment
1.114 paf 770: begin=PC.source;
771: begin_line=PC.line;
1.112 paf 772:
773: pop_LS(PC);
774: continue;
1.1 paf 775: }
1.48 paf 776: break;
777:
778: // STRING IN EXPRESSION
1.145 parser 779: case LS_EXPRESSION_STRING_QUOTED:
780: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 781: switch(c) {
782: case '"':
1.145 parser 783: case '\'':
784: if(
785: PC.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
786: PC.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
787: pop_LS(PC); //"abc". | 'abc'.
788: RC;
789: }
790: break;
1.48 paf 791: case '$':
1.166 parser 792: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 793: RC;
794: case '^':
1.10 paf 795: push_LS(PC, LS_METHOD_NAME);
1.48 paf 796: RC;
1.10 paf 797: }
798: break;
799:
800: // METHOD DEFINITION
801: case LS_DEF_NAME:
1.48 paf 802: switch(c) {
803: case '[':
1.114 paf 804: PC.ls=LS_DEF_PARAMS;
1.48 paf 805: RC;
806: case '\n':
1.114 paf 807: PC.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 808: RC;
1.10 paf 809: }
810: break;
1.48 paf 811:
1.10 paf 812: case LS_DEF_PARAMS:
1.48 paf 813: switch(c) {
1.192 paf 814: case '$': // common error
1.193 paf 815: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
816: goto break2;
1.48 paf 817: case ';':
818: RC;
819: case ']':
1.114 paf 820: PC.ls=*PC.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 821: RC;
1.49 paf 822: case '\n': // wrong. bailing out
1.10 paf 823: pop_LS(PC);
1.48 paf 824: RC;
1.10 paf 825: }
826: break;
1.48 paf 827:
1.10 paf 828: case LS_DEF_LOCALS:
1.48 paf 829: switch(c) {
830: case '[':
831: case ';':
832: RC;
833: case ']':
1.114 paf 834: PC.ls=LS_DEF_COMMENT;
1.48 paf 835: RC;
836: case '\n': // wrong. bailing out
1.10 paf 837: pop_LS(PC);
1.48 paf 838: RC;
1.10 paf 839: }
840: break;
1.48 paf 841:
1.10 paf 842: case LS_DEF_COMMENT:
843: if(c=='\n') {
844: pop_LS(PC);
1.48 paf 845: RC;
1.37 paf 846: }
847: break;
848:
1.48 paf 849: case LS_DEF_SPECIAL_BODY:
1.175 paf 850: if(c=='\n')
1.48 paf 851: RC;
852: break;
853:
854: // (EXPRESSION)
1.69 paf 855: case LS_VAR_ROUND:
856: case LS_METHOD_ROUND:
1.48 paf 857: switch(c) {
858: case ')':
859: if(--lexical_brackets_nestage==0)
1.114 paf 860: if(PC.ls==LS_METHOD_ROUND) // method round param ended
861: PC.ls=LS_METHOD_AFTER; // look for method end
862: else // PC.ls==LS_VAR_ROUND // variable constructor ended
1.69 paf 863: pop_LS(PC); // return to normal life
1.48 paf 864: RC;
1.194 paf 865: case '#': // comment start skipping
866: if(end!=begin) {
867: // append piece till #
868: PC.string->APPEND_CLEAN(begin, end-begin, PC.file, begin_line);
869: }
870: // fall into COMMENT lexical state [wait for \n]
871: push_LS(PC, LS_EXPRESSION_COMMENT);
872: lexical_brackets_nestage=1;
873: continue;
1.48 paf 874: case '$':
1.166 parser 875: push_LS(PC, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 876: RC;
877: case '^':
878: push_LS(PC, LS_METHOD_NAME);
879: RC;
880: case '(':
881: lexical_brackets_nestage++;
882: RC;
1.67 paf 883: case '-':
1.127 paf 884: switch(*PC.source) {
885: case 'f': // -f
1.67 paf 886: skip_analized=1;
887: result=FEXISTS;
1.127 paf 888: goto break2;
889: case 'd': // -d
890: skip_analized=1;
891: result=DEXISTS;
892: goto break2;
1.191 paf 893: default: // minus
1.67 paf 894: result=c;
1.127 paf 895: goto break2;
896: }
1.67 paf 897: goto break2;
1.173 paf 898: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 899: case '~':
1.48 paf 900: case ';':
901: RC;
1.193 paf 902: case '&': case '|':
1.114 paf 903: if(*PC.source==c) { // && ||
1.193 paf 904: result=c=='&'?LAND:LOR;
1.67 paf 905: skip_analized=1;
1.58 paf 906: } else
907: result=c;
908: goto break2;
1.193 paf 909: case '!':
910: switch(PC.source[0]) {
911: case '|': // !| !||
912: skip_analized=1;
913: if(PC.source[1]=='|') {
914: skip_analized++;
915: result=LXOR;
916: } else
917: result=NXOR;
918: goto break2;
919: case '=': // !=
920: skip_analized=1;
921: result=NNE;
922: goto break2;
923: }
924: RC;
1.195 paf 925:
926: case '<': // <<, <=, <
927: switch(*PC.source) {
928: case '<': // <[<]
929: skip_analized=1; result=NSL; break;
930: case '=': // <[=]
931: skip_analized=1; result=NLE; break;
932: default: // <[]
933: result=c; break;
934: }
935: goto break2;
936: case '>': // >>, >=, >
937: switch(*PC.source) {
938: case '>': // >[>]
939: skip_analized=1; result=NSR; break;
940: case '=': // >[=]
941: skip_analized=1; result=NGE; break;
942: default: // >[]
943: result=c; break;
944: }
945: goto break2;
946: case '=': // ==
947: switch(*PC.source) {
948: case '=': // =[=]
949: skip_analized=1; result=NEQ; break;
950: default: // =[]
951: result=c; break; // not used now
952: }
1.58 paf 953: goto break2;
1.195 paf 954:
1.48 paf 955: case '"':
1.145 parser 956: push_LS(PC, LS_EXPRESSION_STRING_QUOTED);
957: RC;
958: case '\'':
959: push_LS(PC, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 960: RC;
1.50 paf 961: case 'l': case 'g': case 'e': case 'n':
1.51 paf 962: if(end==begin) // right after whitespace
1.117 paf 963: if(isspace(PC.source[1])) {
964: switch(*PC.source) {
965: // case '?': // ok [and bad cases, yacc would bark at them]
966: case 't': // lt gt [et nt]
967: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
968: skip_analized=1;
969: goto break2;
970: case 'e': // le ge ne [ee]
971: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
972: skip_analized=1;
973: goto break2;
974: case 'q': // eq [lq gq nq]
975: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
976: skip_analized=1;
977: goto break2;
978: }
1.67 paf 979: }
980: break;
981: case 'i':
982: if(end==begin) // right after whitespace
1.117 paf 983: if(isspace(PC.source[1])) {
984: switch(PC.source[0]) {
985: case 'n': // in
1.95 paf 986: skip_analized=1;
987: result=IN;
988: goto break2;
1.117 paf 989: case 's': // is
1.95 paf 990: skip_analized=1;
991: result=IS;
992: goto break2;
993: }
1.67 paf 994: }
995: break;
996: case 'd':
997: if(end==begin) // right after whitespace
1.114 paf 998: if(PC.source[0]=='e' && PC.source[1]=='f') { // def
1.67 paf 999: skip_analized=2;
1000: result=DEF;
1.58 paf 1001: goto break2;
1.50 paf 1002: }
1.48 paf 1003: break;
1004: case ' ': case '\t': case '\n':
1.63 paf 1005: if(end!=begin) { // there were a string after previous operator?
1006: result=0; // return that string
1007: goto break2;
1.48 paf 1008: }
1.63 paf 1009: // that's a leading|traling space or after-operator-space
1010: // ignoring it
1011: // reset piece 'begin' position & line
1.114 paf 1012: begin=PC.source; // after whitespace char
1013: begin_line=PC.line;
1.48 paf 1014: continue;
1.1 paf 1015: }
1016: break;
1.194 paf 1017: case LS_EXPRESSION_COMMENT:
1018: if(c=='(')
1019: lexical_brackets_nestage++;
1020:
1021: switch(*PC.source) {
1022: case '\n': case ')':
1023: if(*PC.source==')')
1024: if(--lexical_brackets_nestage!=0)
1025: continue;
1026:
1027: // skip comment
1028: begin=PC.source;
1029: begin_line=PC.line;
1030:
1031: pop_LS(PC);
1032: continue;
1033: }
1034: break;
1.1 paf 1035:
1.10 paf 1036: // VARIABLE GET/PUT/WITH
1.166 parser 1037: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1038: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1039: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1040: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1041: if(
1042: PC.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1043: PC.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1044: // name in expr ends also before
1.48 paf 1045: switch(c) {
1.181 paf 1046: // expression minus
1.92 paf 1047: case '-':
1.181 paf 1048: // expression integer division
1049: case '\\':
1.48 paf 1050: pop_LS(PC);
1.114 paf 1051: PC.source--; if(--PC.col<0) { PC.line--; PC.col=-1; }
1.48 paf 1052: result=EON;
1053: goto break2;
1054: }
1055: }
1.166 parser 1056: if(
1057: PC.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1058: PC.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1059: // name already has ':', stop before next
1060: switch(c) {
1061: case ':':
1062: pop_LS(PC);
1063: PC.source--; if(--PC.col<0) { PC.line--; PC.col=-1; }
1064: result=EON;
1065: goto break2;
1066: }
1067: }
1.48 paf 1068: switch(c) {
1069: case 0:
1070: case ' ': case '\t': case '\n':
1071: case ';':
1.126 paf 1072: case ']': case '}': case ')':
1073: case '"': case '\'':
1.139 parser 1074: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1075: case '+': case '*': case '/': case '%':
1076: case '&': case '|':
1077: case '=': case '!':
1.99 paf 1078: // common delimiters
1.190 paf 1079: case ',': case '?': case '#':
1.139 parser 1080: // before call
1081: case '^':
1.1 paf 1082: pop_LS(PC);
1.114 paf 1083: PC.source--; if(--PC.col<0) { PC.line--; PC.col=-1; }
1.13 paf 1084: result=EON;
1.1 paf 1085: goto break2;
1.48 paf 1086: case '[':
1.162 parser 1087: // $name.<[>code]
1088: if(PC.col>1/*not first column*/ && (
1.163 parser 1089: end[-1]=='$'/*was start of get*/ ||
1090: end[-1]==':'/*was class name delim */ ||
1091: end[-1]=='.'/*was name delim */
1.162 parser 1092: )) {
1.166 parser 1093: push_LS(PC, LS_NAME_SQUARE_PART);
1.162 parser 1094: lexical_brackets_nestage=1;
1095: RC;
1096: }
1.114 paf 1097: PC.ls=LS_VAR_SQUARE;
1.1 paf 1098: lexical_brackets_nestage=1;
1.48 paf 1099: RC;
1100: case '{':
1101: if(begin==end) { // ${name}, no need of EON, switching LS
1.114 paf 1102: PC.ls=LS_VAR_NAME_CURLY;
1.48 paf 1103: } else {
1.114 paf 1104: PC.ls=LS_VAR_CURLY;
1.48 paf 1105: lexical_brackets_nestage=1;
1106: }
1.69 paf 1107:
1.48 paf 1108: RC;
1109: case '(':
1.114 paf 1110: PC.ls=LS_VAR_ROUND;
1.1 paf 1111: lexical_brackets_nestage=1;
1.48 paf 1112: RC;
1113: case '.': // name part delim
1114: case '$': // name part subvar
1.160 parser 1115: case ':': // class<:>name
1.166 parser 1116: // go to _WITHOUT_COLON state variant...
1117: if(PC.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1118: PC.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1119: else if(PC.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1120: PC.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1121: // ...stop before next ':'
1.48 paf 1122: RC;
1.1 paf 1123: }
1124: break;
1.48 paf 1125:
1.1 paf 1126: case LS_VAR_NAME_CURLY:
1.48 paf 1127: switch(c) {
1.162 parser 1128: case '[':
1.166 parser 1129: // ${name.<[>code]}
1130: push_LS(PC, LS_NAME_SQUARE_PART);
1.160 parser 1131: lexical_brackets_nestage=1;
1132: RC;
1.48 paf 1133: case '}': // ${name} finished, restoring LS
1.1 paf 1134: pop_LS(PC);
1.48 paf 1135: RC;
1136: case '.': // name part delim
1137: case '$': // name part subvar
1138: case ':': // ':name' or 'class:name'
1139: RC;
1.1 paf 1140: }
1141: break;
1.48 paf 1142:
1143: case LS_VAR_SQUARE:
1144: switch(c) {
1145: case '$':
1.166 parser 1146: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1147: RC;
1148: case '^':
1.10 paf 1149: push_LS(PC, LS_METHOD_NAME);
1.48 paf 1150: RC;
1151: case ']':
1.1 paf 1152: if(--lexical_brackets_nestage==0) {
1153: pop_LS(PC);
1.48 paf 1154: RC;
1.1 paf 1155: }
1.48 paf 1156: break;
1157: case ';': // operator_or_fmt;value delim
1158: RC;
1159: case '[':
1160: lexical_brackets_nestage++;
1161: break;
1.1 paf 1162: }
1163: break;
1.48 paf 1164:
1.1 paf 1165: case LS_VAR_CURLY:
1.48 paf 1166: switch(c) {
1167: case '$':
1.166 parser 1168: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1169: RC;
1170: case '^':
1.10 paf 1171: push_LS(PC, LS_METHOD_NAME);
1.48 paf 1172: RC;
1173: case '}':
1.1 paf 1174: if(--lexical_brackets_nestage==0) {
1175: pop_LS(PC);
1.48 paf 1176: RC;
1.1 paf 1177: }
1.48 paf 1178: break;
1179: case '{':
1.1 paf 1180: lexical_brackets_nestage++;
1.48 paf 1181: break;
1182: }
1.1 paf 1183: break;
1184:
1.10 paf 1185: // METHOD CALL
1.1 paf 1186: case LS_METHOD_NAME:
1.48 paf 1187: switch(c) {
1188: case '[':
1.166 parser 1189: // ^name.<[>code].xxx
1.162 parser 1190: if(PC.col>1/*not first column*/ && (
1.163 parser 1191: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1192: end[-1]==':'/*was class name delim */ ||
1193: end[-1]=='.'/*was name delim */
1.162 parser 1194: )) {
1.166 parser 1195: push_LS(PC, LS_NAME_SQUARE_PART);
1.162 parser 1196: lexical_brackets_nestage=1;
1197: RC;
1198: }
1.114 paf 1199: PC.ls=LS_METHOD_SQUARE;
1.1 paf 1200: lexical_brackets_nestage=1;
1.48 paf 1201: RC;
1202: case '{':
1.114 paf 1203: PC.ls=LS_METHOD_CURLY;
1.1 paf 1204: lexical_brackets_nestage=1;
1.48 paf 1205: RC;
1.69 paf 1206: case '(':
1.114 paf 1207: PC.ls=LS_METHOD_ROUND;
1.69 paf 1208: lexical_brackets_nestage=1;
1209: RC;
1.48 paf 1210: case '.': // name part delim
1211: case '$': // name part subvar
1212: case ':': // ':name' or 'class:name'
1.170 parser 1213: case '^': // ^abc^xxx wrong. bailing out
1214: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.48 paf 1215: RC;
1.1 paf 1216: }
1217: break;
1.48 paf 1218:
1219: case LS_METHOD_SQUARE:
1220: switch(c) {
1221: case '$':
1.166 parser 1222: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1223: RC;
1224: case '^':
1.10 paf 1225: push_LS(PC, LS_METHOD_NAME);
1.48 paf 1226: RC;
1227: case ';': // param delim
1228: RC;
1229: case ']':
1.1 paf 1230: if(--lexical_brackets_nestage==0) {
1.114 paf 1231: PC.ls=LS_METHOD_AFTER;
1.48 paf 1232: RC;
1.1 paf 1233: }
1.48 paf 1234: break;
1235: case '[':
1.1 paf 1236: lexical_brackets_nestage++;
1.48 paf 1237: break;
1238: }
1.1 paf 1239: break;
1.48 paf 1240:
1.1 paf 1241: case LS_METHOD_CURLY:
1.48 paf 1242: switch(c) {
1243: case '$':
1.166 parser 1244: push_LS(PC, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1245: RC;
1246: case '^':
1.10 paf 1247: push_LS(PC, LS_METHOD_NAME);
1.94 paf 1248: RC;
1249: case ';': // param delim
1.48 paf 1250: RC;
1251: case '}':
1.1 paf 1252: if(--lexical_brackets_nestage==0) {
1.114 paf 1253: PC.ls=LS_METHOD_AFTER;
1.48 paf 1254: RC;
1.1 paf 1255: }
1.48 paf 1256: break;
1257: case '{':
1.1 paf 1258: lexical_brackets_nestage++;
1.48 paf 1259: break;
1260: }
1.1 paf 1261: break;
1.48 paf 1262:
1.1 paf 1263: case LS_METHOD_AFTER:
1.69 paf 1264: if(c=='[') {/* ][ }[ )[ */
1.114 paf 1265: PC.ls=LS_METHOD_SQUARE;
1.1 paf 1266: lexical_brackets_nestage=1;
1.48 paf 1267: RC;
1.1 paf 1268: }
1.69 paf 1269: if(c=='{') {/* ]{ }{ ){ */
1.114 paf 1270: PC.ls=LS_METHOD_CURLY;
1.69 paf 1271: lexical_brackets_nestage=1;
1272: RC;
1273: }
1274: if(c=='(') {/* ]( }( )( */
1.114 paf 1275: PC.ls=LS_METHOD_ROUND;
1.1 paf 1276: lexical_brackets_nestage=1;
1.48 paf 1277: RC;
1.1 paf 1278: }
1279: pop_LS(PC);
1.114 paf 1280: PC.source--; if(--PC.col<0) { PC.line--; PC.col=-1; }
1.13 paf 1281: result=EON;
1.1 paf 1282: goto break2;
1283: }
1.9 paf 1284: if(c==0) {
1.1 paf 1285: result=-1;
1286: break;
1287: }
1288: }
1289:
1290: break2:
1.59 paf 1291: if(end!=begin) { // there is last piece?
1292: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1293: // strip last \n
1.10 paf 1294: end--;
1.137 parser 1295: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1296: end--;
1.59 paf 1297: }
1.194 paf 1298: if(end!=begin && PC.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1.59 paf 1299: // append it
1.121 paf 1300: PC.string->APPEND_CLEAN(begin, end-begin, PC.file, begin_line/*, start_col*/);
1.30 paf 1301: }
1.59 paf 1302: }
1.114 paf 1303: if(PC.string->size()) { // something accumulated?
1.17 paf 1304: // create STRING value: array of OP_VALUE+vstring
1.204.2.2 paf 1305: *lvalp=VL(ValuePtr(new VString(PC.string)));
1.10 paf 1306: // new pieces storage
1.204.2.2 paf 1307: PC.string=StringPtr(new String);
1.58 paf 1308: // make current result be pending for next call, return STRING for now
1.114 paf 1309: PC.pending_state=result; result=STRING;
1.58 paf 1310: }
1.67 paf 1311: if(skip_analized) {
1.114 paf 1312: PC.source+=skip_analized; PC.col+=skip_analized;
1.1 paf 1313: }
1.58 paf 1314: return result;
1.1 paf 1315: }
1316:
1.110 paf 1317: static int real_yyerror(parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1318: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1319: return 1;
1.110 paf 1320: }
1.1 paf 1321:
1.110 paf 1322: static void yyprint(FILE *file, int type, YYSTYPE value) {
1323: if(type==STRING)
1.204.2.6 paf 1324: fprintf(file, " \"%s\"", LA2S(*value)->cstr().get());
1.110 paf 1325: }
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