Annotation of parser3/src/main/compile.y, revision 1.232
1.168 parser 1: %{
1.105 paf 2: /** @file
1.106 paf 3: Parser: compiler(lexical parser and grammar).
4:
1.215 paf 5: Copyright (c) 2001-2005 ArtLebedev Group (http://www.artlebedev.com)
1.168 parser 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.217 paf 7:
1.232 ! misha 8: $Id: compile.y,v 1.231 2009-04-17 09:11:15 misha 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:
1.206 paf 22: #define YYSTYPE ArrayOperation*
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
1.206 paf 27: #define yyerror(msg) real_yyerror((Parse_control *)pc, msg)
1.9 paf 28: #define YYPRINT(file, type, value) yyprint(file, type, value)
1.1 paf 29:
1.206 paf 30: // includes
31:
1.1 paf 32: #include "compile_tools.h"
1.8 paf 33: #include "pa_value.h"
1.12 paf 34: #include "pa_request.h"
1.39 paf 35: #include "pa_vobject.h"
1.52 paf 36: #include "pa_vdouble.h"
1.98 paf 37: #include "pa_globals.h"
1.141 parser 38: #include "pa_vvoid.h"
1.200 paf 39: #include "pa_vmethod_frame.h"
1.39 paf 40:
1.206 paf 41: // defines
42:
1.97 paf 43: #define USE_CONTROL_METHOD_NAME "USE"
1.226 misha 44: #define OPTIONS_CONTROL_METHOD_NAME "OPTIONS"
45: #define OPTION_ALL_VARS_LOCAL_NAME "locals"
1.230 misha 46: #define OPTION_PARTIAL_CLASS "partial"
1.1 paf 47:
1.206 paf 48: // forwards
49:
50: static int real_yyerror(Parse_control* pc, char* s);
51: static void yyprint(FILE* file, int type, YYSTYPE value);
52: static int yylex(YYSTYPE* lvalp, void* pc);
1.1 paf 53:
1.216 paf 54: static const VBool vfalse(false);
55: static const VBool vtrue(true);
56: static const VVoid vvoid;
57:
1.8 paf 58: // local convinient inplace typecast & var
1.205 paf 59: #undef PC
1.206 paf 60: #define PC (*(Parse_control *)pc)
61: #undef POOL
1.114 paf 62: #define POOL (*PC.pool)
1.107 paf 63: #ifndef DOXYGEN
1.1 paf 64: %}
65:
66: %pure_parser
67:
1.13 paf 68: %token EON
1.4 paf 69: %token STRING
1.1 paf 70: %token BOGUS
1.55 paf 71:
1.58 paf 72: %token BAD_STRING_COMPARISON_OPERATOR
1.114 paf 73: %token BAD_HEX_LITERAL
1.171 parser 74: %token BAD_METHOD_DECL_START
1.193 paf 75: %token BAD_METHOD_PARAMETER_NAME_CHARACTER
1.209 paf 76: %token BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE
1.58 paf 77:
1.59 paf 78: %token LAND "&&"
1.58 paf 79: %token LOR "||"
1.193 paf 80: %token LXOR "!||"
81: %token NXOR "!|"
1.58 paf 82:
83: %token NLE "<="
84: %token NGE ">="
85: %token NEQ "=="
86: %token NNE "!="
1.195 paf 87: %token NSL "<<"
88: %token NSR ">>"
1.58 paf 89:
90: %token SLT "lt"
91: %token SGT "gt"
92: %token SLE "le"
93: %token SGE "ge"
94: %token SEQ "eq"
95: %token SNE "ne"
96:
1.67 paf 97: %token DEF "def"
98: %token IN "in"
99: %token FEXISTS "-f"
1.127 paf 100: %token DEXISTS "-d"
1.95 paf 101: %token IS "is"
1.67 paf 102:
1.216 paf 103: %token LITERAL_TRUE "true"
104: %token LITERAL_FALSE "false"
105:
1.57 paf 106: /* logical */
1.193 paf 107: %left "!||"
1.57 paf 108: %left "||"
109: %left "&&"
1.131 paf 110: %left '<' '>' "<=" ">=" "lt" "gt" "le" "ge"
111: %left "==" "!=" "eq" "ne"
112: %left "is" "def" "in" "-f" "-d"
1.57 paf 113:
114: /* bitwise */
1.193 paf 115: %left "!|"
1.131 paf 116: %left '|'
117: %left '&'
1.202 paf 118: %left "<<" ">>"
1.57 paf 119:
1.56 paf 120: /* numerical */
1.202 paf 121: %left '+' '-'
122: %left '*' '/' '\\' '%'
123: %left NUNARY /* unary - + */
124:
125: /* out-of-group */
126: %left '~' /* bitwise */
127: %left '!' /* logical */
1.1 paf 128:
129: %%
1.195 paf 130: all:
1.10 paf 131: one_big_piece {
1.206 paf 132: Method& method=*new Method(Method::CT_ANY,
1.81 paf 133: 0, 0, /*min, max numbered_params_count*/
1.75 paf 134: 0/*param_names*/, 0/*local_names*/,
135: $1/*parser_code*/, 0/*native_code*/);
1.206 paf 136: PC.cclass->add_method(PC.alias_method(main_method_name), method);
1.10 paf 137: }
138: | methods;
139:
140: methods: method | methods method;
141: one_big_piece: maybe_codes;
142:
1.34 paf 143: method: control_method | code_method;
144:
145: control_method: '@' STRING '\n'
1.132 paf 146: maybe_control_strings {
1.206 paf 147: const String& command=*LA2S(*$2);
1.34 paf 148: YYSTYPE strings_code=$4;
1.206 paf 149: if(strings_code->count()<1*OPERATIONS_PER_OPVALUE) {
1.114 paf 150: strcpy(PC.error, "@");
151: strcat(PC.error, command.cstr());
152: strcat(PC.error, " is empty");
1.37 paf 153: YYERROR;
154: }
1.74 paf 155: if(command==CLASS_NAME) {
1.206 paf 156: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.73 paf 157: // new class' name
1.206 paf 158: const String& name=*LA2S(*strings_code);
1.73 paf 159: // creating the class
1.206 paf 160: VStateless_class* cclass=new VClass;
1.226 misha 161: PC.cclass_new=cclass;
162: PC.cclass_new->set_name(name);
1.73 paf 163: } else {
1.206 paf 164: strcpy(PC.error, "@"CLASS_NAME" must contain only one line with class name (contains more then one)");
1.34 paf 165: YYERROR;
166: }
1.130 paf 167: } else if(command==USE_CONTROL_METHOD_NAME) {
1.206 paf 168: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE)
169: PC.request.use_file(PC.request.main_class, *LA2S(*strings_code, i));
1.130 paf 170: } else if(command==BASE_NAME) {
1.226 misha 171: if(PC.append){
172: strcpy(PC.error, "can't set base while appending methods to class '");
173: strncat(PC.error, PC.cclass->name().cstr(), MAX_STRING/2);
174: strcat(PC.error, "'");
175: YYERROR;
176: }
177: PC.class_add();
1.188 paf 178: if(PC.cclass->base_class()) { // already changed from default?
1.130 paf 179: strcpy(PC.error, "class already have a base '");
1.226 misha 180: strncat(PC.error, PC.cclass->base_class()->name().cstr(), MAX_STRING/2);
1.130 paf 181: strcat(PC.error, "'");
182: YYERROR;
183: }
1.206 paf 184: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
185: const String& base_name=*LA2S(*strings_code);
186: if(Value* base_class_value=PC.request.classes().get(base_name)) {
187: // @CLASS == @BASE sanity check
188: if(VStateless_class *base_class=base_class_value->get_class()) {
189: if(PC.cclass==base_class) {
190: strcpy(PC.error, "@"CLASS_NAME" equals @"BASE_NAME);
191: YYERROR;
192: }
193: PC.cclass->get_class()->set_base(base_class);
194: } else { // they asked to derive from a class without methods ['env' & co]
195: strcpy(PC.error, base_name.cstr());
196: strcat(PC.error, ": you can not derive from this class in @"BASE_NAME);
197: YYERROR;
198: }
199: } else {
1.130 paf 200: strcpy(PC.error, base_name.cstr());
201: strcat(PC.error, ": undefined class in @"BASE_NAME);
1.73 paf 202: YYERROR;
203: }
1.34 paf 204: } else {
1.130 paf 205: strcpy(PC.error, "@"BASE_NAME" must contain sole name");
1.34 paf 206: YYERROR;
207: }
1.223 misha 208: } else if(command==OPTIONS_CONTROL_METHOD_NAME) {
209: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE) {
210: const String& option=*LA2S(*strings_code, i);
1.226 misha 211: if(option==OPTION_ALL_VARS_LOCAL_NAME){
212: PC.set_all_vars_local();
1.230 misha 213: } else if(option==OPTION_PARTIAL_CLASS){
214: if(PC.cclass_new){
215: if(VStateless_class* existed=PC.get_existed_class(PC.cclass_new)){
216: if(!PC.reuse_existed_class(existed)){
217: strcpy(PC.error, "can't append methods to '");
218: strncat(PC.error, PC.cclass_new->name().cstr(), MAX_STRING/2);
219: strcat(PC.error, "' - the class wasn't marked as partial");
220: YYERROR;
221: }
1.226 misha 222: } else {
1.230 misha 223: // mark new class as partial. we can add methods to it later.
224: PC.cclass_new->set_partial();
1.226 misha 225: }
1.230 misha 226: } else {
227: strcpy(PC.error, "'"OPTION_PARTIAL_CLASS"' option should be used straight after @"CLASS_NAME);
1.226 misha 228: YYERROR;
229: }
1.223 misha 230: } else {
1.226 misha 231: strcpy(PC.error, "'");
232: strncat(PC.error, option.cstr(), MAX_STRING/2);
233: strcat(PC.error, "' invalid option. valid options are "
1.230 misha 234: "'"OPTION_PARTIAL_CLASS"' and '"OPTION_ALL_VARS_LOCAL_NAME"'");
1.223 misha 235: YYERROR;
236: }
237: }
1.130 paf 238: } else {
239: strcpy(PC.error, "'");
240: strncat(PC.error, command.cstr(), MAX_STRING/2);
241: strcat(PC.error, "' invalid special name. valid names are "
1.223 misha 242: "'"CLASS_NAME"', '"USE_CONTROL_METHOD_NAME"', '"BASE_NAME"' and '"OPTIONS_CONTROL_METHOD_NAME"'.");
1.130 paf 243: YYERROR;
1.34 paf 244: }
245: };
1.132 paf 246: maybe_control_strings: empty | control_strings;
1.206 paf 247: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2) };
1.37 paf 248: control_string: maybe_string '\n';
249: maybe_string: empty | STRING;
1.34 paf 250:
1.222 misha 251: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n' {
1.226 misha 252: PC.class_add();
1.208 paf 253: PC.explicit_result=false;
1.10 paf 254:
255: YYSTYPE params_names_code=$3;
1.206 paf 256: ArrayString* params_names=0;
257: if(int size=params_names_code->count()) {
258: params_names=new ArrayString;
259: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
260: *params_names+=LA2S(*params_names_code, i);
1.75 paf 261: }
1.10 paf 262:
263: YYSTYPE locals_names_code=$4;
1.206 paf 264: ArrayString* locals_names=0;
1.223 misha 265: bool all_vars_local=false;
1.206 paf 266: if(int size=locals_names_code->count()) {
267: locals_names=new ArrayString;
1.208 paf 268: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE) {
269: const String* local_name=LA2S(*locals_names_code, i);
270: if(*local_name==RESULT_VAR_NAME)
271: PC.explicit_result=true;
1.226 misha 272: else if(*local_name==OPTION_ALL_VARS_LOCAL_NAME)
1.223 misha 273: all_vars_local=true;
1.208 paf 274: else
275: *locals_names+=local_name;
276: }
1.75 paf 277: }
1.231 misha 278: if(!all_vars_local && PC.cclass && PC.cclass->is_vars_local())
1.223 misha 279: all_vars_local=true;
1.10 paf 280:
1.208 paf 281: Method* method=new Method(
1.206 paf 282: //name,
1.122 paf 283: Method::CT_ANY,
1.81 paf 284: 0, 0/*min,max numbered_params_count*/,
1.76 paf 285: params_names, locals_names,
1.223 misha 286: 0/*to be filled later in next {} */, 0, all_vars_local);
1.221 misha 287:
1.208 paf 288: *reinterpret_cast<Method**>(&$$)=method;
289:
290: // todo: check [][;result;]
1.222 misha 291: } maybe_codes {
1.231 misha 292: Method& method=*reinterpret_cast<Method*>($7);
293: // fill in the code
294: method.parser_code=$8;
295:
296: // register in class
297: const String& name=*LA2S(*$2);
298: PC.cclass->add_method(PC.alias_method(name), method);
1.8 paf 299: };
1.10 paf 300:
301: maybe_bracketed_strings: empty | bracketed_maybe_strings;
302: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
303: maybe_strings: empty | strings;
1.206 paf 304: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3) };
1.10 paf 305:
306: maybe_comment: empty | STRING;
1.1 paf 307:
308: /* codes */
309:
1.10 paf 310: maybe_codes: empty | codes;
311:
1.206 paf 312: codes: code | codes code { $$=$1; P(*$$, *$2) };
1.81 paf 313: code: write_string | action;
1.209 paf 314: action: get | put | call;
1.1 paf 315:
316: /* get */
317:
1.64 paf 318: get: get_value {
1.184 paf 319: $$=$1; /* stack: resulting value */
1.206 paf 320: changetail_or_append(*$$,
1.229 misha 321: OP::OP_GET_ELEMENT, false, /*->*/OP::OP_GET_ELEMENT__WRITE,
322: /*or */OP::OP_WRITE_VALUE
1.184 paf 323: ); /* value=pop; wcontext.write(value) */
1.1 paf 324: };
1.163 parser 325: get_value: '$' get_name_value { $$=$2 };
1.64 paf 326: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 327: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 328: name_without_curly_rdive:
329: name_without_curly_rdive_read
330: | name_without_curly_rdive_class;
1.19 paf 331: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 332: $$=N();
333: ArrayOperation* diving_code=$1;
334: const String* first_name=LA2S(*diving_code);
1.179 paf 335: // self.xxx... -> xxx...
1.206 paf 336: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 337: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.229 misha 338: O(*yyval, OP::OP_WITH_SELF); /* stack: starting context */
1.206 paf 339: P(*yyval, *diving_code,
1.22 paf 340: /* skip over... */
1.229 misha 341: diving_code->count()>=4?4/*OP::OP_VALUE+origin+string+OP::OP_GET_ELEMENTx*/:3/*OP::OP_+origin+string*/);
1.22 paf 342: } else {
1.229 misha 343: O(*yyval, OP::OP_WITH_READ); /* stack: starting context */
1.179 paf 344:
1.201 paf 345: // ^if ELEMENT -> ^if ELEMENT_OR_OPERATOR
1.206 paf 346: // OP_VALUE+origin+string+OP_GET_ELEMENT. -> OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
347: if(PC.in_call_value && diving_code->count()==4)
1.229 misha 348: diving_code->put(4-1, OP::OP_GET_ELEMENT_OR_OPERATOR);
1.206 paf 349: P(*$$, *diving_code);
1.22 paf 350: }
351: /* diving code; stack: current context */
1.1 paf 352: };
1.206 paf 353: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2) };
354: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2) };
1.1 paf 355:
356: /* put */
357:
1.81 paf 358: put: '$' name_expr_wdive construct {
1.20 paf 359: $$=$2; /* stack: context,name */
1.206 paf 360: P(*$$, *$3); /* stack: context,name,constructor_value */
1.20 paf 361: };
1.44 paf 362: name_expr_wdive:
1.157 parser 363: name_expr_wdive_root
364: | name_expr_wdive_write
1.44 paf 365: | name_expr_wdive_class;
1.157 parser 366: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 367: $$=N();
368: ArrayOperation* diving_code=$1;
369: const String* first_name=LA2S(*diving_code);
1.179 paf 370: // $self.xxx... -> $xxx...
1.206 paf 371: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 372: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.229 misha 373: O(*$$, OP::OP_WITH_SELF); /* stack: starting context */
1.206 paf 374: P(*$$, *diving_code,
1.23 paf 375: /* skip over... */
1.229 misha 376: diving_code->count()>=4?4/*OP::OP_VALUE+origin+string+OP::OP_GET_ELEMENTx*/:3/*OP::OP_+origin+string*/);
1.23 paf 377: } else {
1.229 misha 378: O(*$$, OP::OP_WITH_ROOT); /* stack: starting context */
1.206 paf 379: P(*$$, *diving_code);
1.23 paf 380: }
381: /* diving code; stack: current context */
1.156 parser 382: };
1.157 parser 383: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 384: $$=N();
1.229 misha 385: O(*$$, OP::OP_WITH_WRITE); /* stack: starting context */
1.206 paf 386: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 387: };
1.206 paf 388: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2) };
1.20 paf 389:
1.149 parser 390: construct:
1.163 parser 391: construct_square
392: | construct_round
393: | construct_curly
1.149 parser 394: ;
1.211 paf 395: construct_square: '[' {
396: // allow $result_or_other_variable[ letters here any time ]
397: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
398: } any_constructor_code_value {
1.213 paf 399: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.211 paf 400: } ']' {
1.149 parser 401: // stack: context, name
1.211 paf 402: $$=$3; // stack: context, name, value
1.229 misha 403: O(*$$, OP::OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 404: }
405: ;
1.149 parser 406: construct_round: '(' expr_value ')' {
1.206 paf 407: $$=N();
1.229 misha 408: O(*$$, OP::OP_PREPARE_TO_EXPRESSION);
1.149 parser 409: // stack: context, name
1.206 paf 410: P(*$$, *$2); // stack: context, name, value
1.229 misha 411: O(*$$, OP::OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 412: }
1.52 paf 413: ;
1.149 parser 414: construct_curly: '{' maybe_codes '}' {
415: // stack: context, name
1.206 paf 416: $$=N();
1.229 misha 417: OA(*$$, OP::OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 418: };
419:
1.55 paf 420: any_constructor_code_value:
1.157 parser 421: void_value /* optimized $var[] case */
1.52 paf 422: | STRING /* optimized $var[STRING] case */
1.55 paf 423: | constructor_code_value /* $var[something complex] */
1.1 paf 424: ;
1.55 paf 425: constructor_code_value: constructor_code {
1.206 paf 426: $$=N();
1.229 misha 427: OA(*$$, OP::OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 428: /* some code that writes to that context */
429: /* context=pop; stack: context.value() */
1.1 paf 430: };
1.55 paf 431: constructor_code: codes__excluding_sole_str_literal;
1.206 paf 432: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 433:
1.1 paf 434: /* call */
435:
1.66 paf 436: call: call_value {
437: $$=$1; /* stack: value */
1.206 paf 438: changetail_or_append(*$$,
1.229 misha 439: OP::OP_CALL, true, /*->*/ OP::OP_CALL__WRITE,
440: /*or */OP::OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.66 paf 441: };
1.177 paf 442: call_value: '^' {
1.180 paf 443: PC.in_call_value=true;
1.177 paf 444: }
445: call_name {
1.180 paf 446: PC.in_call_value=false;
1.177 paf 447: }
1.154 parser 448: store_params EON { /* ^field.$method{vasya} */
449: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 450:
1.154 parser 451: YYSTYPE params_code=$5;
1.229 misha 452: if(params_code->count()==4) { // probably [] case. [OP::OP_VALUE+origin+Void+STORE_PARAM]
1.206 paf 453: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.219 paf 454: if(value->is_void()) // value is VVoid?
1.123 paf 455: params_code=0; // ^zzz[] case. don't append lone empty param.
1.186 paf 456: }
457: /* stack: context, method_junction */
1.229 misha 458: OA(*$$, OP::OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
1.1 paf 459: };
460:
1.43 paf 461: call_name: name_without_curly_rdive;
1.38 paf 462:
1.206 paf 463: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2) };
1.69 paf 464: store_param:
465: store_square_param
466: | store_round_param
467: | store_curly_param
1.31 paf 468: ;
1.210 paf 469: store_square_param: '[' {
1.211 paf 470: // allow ^call[ letters here any time ]
1.210 paf 471: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
472: } store_code_param_parts {
1.213 paf 473: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.210 paf 474: } ']' {$$=$3};
1.69 paf 475: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 476: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 477: store_code_param_parts:
478: store_code_param_part
1.206 paf 479: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 480: ;
481: store_expr_param_parts:
482: store_expr_param_part
1.206 paf 483: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 484: ;
1.94 paf 485: store_curly_param_parts:
486: store_curly_param_part
1.206 paf 487: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3) }
1.94 paf 488: ;
1.120 paf 489: store_code_param_part: code_param_value {
1.32 paf 490: $$=$1;
1.229 misha 491: O(*$$, OP::OP_STORE_PARAM);
1.120 paf 492: };
1.214 paf 493: store_expr_param_part: expr_value {
494: YYSTYPE expr_code=$1;
1.215 paf 495: if(expr_code->count()==3
1.229 misha 496: && (*expr_code)[0].code==OP::OP_VALUE) { // optimizing (double/bool/incidently 'string' too) case. [OP::OP_VALUE+origin+Double]
1.214 paf 497: $$=expr_code;
1.229 misha 498: O(*$$, OP::OP_STORE_PARAM); // no evaluating
1.214 paf 499: } else {
500: ArrayOperation* code=N();
1.229 misha 501: O(*code, OP::OP_PREPARE_TO_EXPRESSION);
1.214 paf 502: P(*code, *expr_code);
1.229 misha 503: O(*code, OP::OP_WRITE_EXPR_RESULT);
1.214 paf 504: $$=N();
1.229 misha 505: OA(*$$, OP::OP_EXPR_CODE__STORE_PARAM, code);
1.214 paf 506: }
1.69 paf 507: };
1.94 paf 508: store_curly_param_part: maybe_codes {
1.206 paf 509: $$=N();
1.229 misha 510: OA(*$$, OP::OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 511: };
1.120 paf 512: code_param_value:
1.157 parser 513: void_value /* optimized [;...] case */
1.120 paf 514: | STRING /* optimized [STRING] case */
515: | constructor_code_value /* [something complex] */
516: ;
1.1 paf 517:
518: /* name */
519:
1.206 paf 520: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 521:
1.206 paf 522: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 523: name_step: name_advance1 '.';
524: name_advance1: name_expr_value {
1.177 paf 525: // we know that name_advance1 not called from ^xxx context
526: // so we'll not check for operator call possibility as we do in name_advance2
527:
1.1 paf 528: /* stack: context */
529: $$=$1; /* stack: context,name */
1.229 misha 530: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 531: };
532: name_advance2: name_expr_value {
533: /* stack: context */
534: $$=$1; /* stack: context,name */
1.229 misha 535: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 536: }
1.4 paf 537: | STRING BOGUS
1.1 paf 538: ;
539: name_expr_value:
1.4 paf 540: STRING /* subname_is_const */
1.1 paf 541: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 542: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 543: | name_square_code_value /* [codes] */
1.1 paf 544: ;
545: name_expr_subvar_value: '$' subvar_ref_name_rdive {
546: $$=$2;
1.229 misha 547: O(*$$, OP::OP_GET_ELEMENT);
1.1 paf 548: };
1.4 paf 549: name_expr_with_subvar_value: STRING subvar_get_writes {
1.206 paf 550: ArrayOperation* code;
1.183 paf 551: {
1.206 paf 552: change_string_literal_to_write_string_literal(*(code=$1));
553: P(*code, *$2);
1.183 paf 554: }
1.206 paf 555: $$=N();
1.229 misha 556: OA(*$$, OP::OP_STRING_POOL, code);
1.1 paf 557: };
1.212 paf 558: name_square_code_value: '[' {
559: // allow $result_or_other_variable[ letters here any time ]
560: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
561: } codes {
1.213 paf 562: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.212 paf 563: } ']' {
1.206 paf 564: $$=N();
1.229 misha 565: OA(*$$, OP::OP_OBJECT_POOL, $3); /* stack: empty write context */
1.183 paf 566: /* some code that writes to that context */
567: /* context=pop; stack: context.value() */
1.160 parser 568: };
1.154 parser 569: subvar_ref_name_rdive: STRING {
1.206 paf 570: $$=N();
1.229 misha 571: O(*$$, OP::OP_WITH_READ);
1.206 paf 572: P(*$$, *$1);
1.1 paf 573: };
1.206 paf 574: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 575: subvar__get_write: '$' subvar_ref_name_rdive {
576: $$=$2;
1.229 misha 577: O(*$$, OP::OP_GET_ELEMENT__WRITE);
1.42 paf 578: };
579:
1.154 parser 580: class_prefix:
581: class_static_prefix
582: | class_constructor_prefix
583: ;
1.155 parser 584: class_static_prefix: STRING ':' {
585: $$=$1; // stack: class name string
1.206 paf 586: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
587: if(VStateless_class* base=PC.cclass->base_class()) {
588: change_string_literal_value(*$$, base->name());
1.189 paf 589: } else {
590: strcpy(PC.error, "no base class declared");
591: YYERROR;
592: }
593: }
1.229 misha 594: O(*$$, OP::OP_GET_CLASS);
1.155 parser 595: };
596: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 597: $$=$1;
1.180 paf 598: if(!PC.in_call_value) {
1.154 parser 599: strcpy(PC.error, ":: not allowed here");
600: YYERROR;
601: }
1.229 misha 602: O(*$$, OP::OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 603: };
604:
1.53 paf 605:
1.56 paf 606: /* expr */
1.53 paf 607:
1.214 paf 608: expr_value: expr;
1.56 paf 609: expr:
1.214 paf 610: double_or_STRING
1.216 paf 611: | true_value
612: | false_value
1.64 paf 613: | get_value
1.66 paf 614: | call_value
1.216 paf 615: | '"' string_inside_quotes_value '"' { $$ = $2 }
616: | '\'' string_inside_quotes_value '\'' { $$ = $2 }
1.60 paf 617: | '(' expr ')' { $$ = $2; }
618: /* stack: operand // stack: @operand */
1.229 misha 619: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP::OP_NEG) }
1.202 paf 620: | '+' expr %prec NUNARY { $$=$2 }
1.229 misha 621: | '~' expr { $$=$2; O(*$$, OP::OP_INV) }
622: | '!' expr { $$=$2; O(*$$, OP::OP_NOT) }
623: | "def" expr { $$=$2; O(*$$, OP::OP_DEF) }
624: | "in" expr { $$=$2; O(*$$, OP::OP_IN) }
625: | "-f" expr { $$=$2; O(*$$, OP::OP_FEXISTS) }
626: | "-d" expr { $$=$2; O(*$$, OP::OP_DEXISTS) }
1.60 paf 627: /* stack: a,b // stack: a@b */
1.229 misha 628: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_SUB) }
629: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_ADD) }
630: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MUL) }
631: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_DIV) }
632: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MOD) }
633: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_INTDIV) }
634: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SL) }
635: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SR) }
636: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_AND) }
637: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_OR) }
638: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_XOR) }
639: | expr "&&" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_AND) }
640: | expr "||" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_OR) }
641: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_LOG_XOR) }
642: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LT) }
643: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GT) }
644: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LE) }
645: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GE) }
646: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_EQ) }
647: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_NE) }
648: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LT) }
649: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GT) }
650: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LE) }
651: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GE) }
652: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_EQ) }
653: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_NE) }
654: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_IS) }
1.56 paf 655: ;
1.214 paf 656:
657: double_or_STRING: STRING {
658: // optimized from OP_STRING->OP_VALUE for doubles
659: maybe_change_string_literal_to_double_literal(*($$=$1));
660: };
1.55 paf 661:
1.65 paf 662: string_inside_quotes_value: maybe_codes {
1.206 paf 663: $$=N();
1.229 misha 664: OA(*$$, OP::OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 665: /* some code that writes to that context */
666: /* context=pop; stack: context.get_string() */
1.53 paf 667: };
1.1 paf 668:
1.27 paf 669: /* basics */
1.1 paf 670:
1.81 paf 671: write_string: STRING {
1.209 paf 672: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
673: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 674: };
675:
1.216 paf 676: void_value: /* empty */ { $$=VL(/*we know that we will not change it*/const_cast<VVoid*>(&vvoid), 0, 0, 0) }
677: true_value: "true" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vtrue), 0, 0, 0) }
678: false_value: "false" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vfalse), 0, 0, 0) }
679:
1.206 paf 680: empty: /* empty */ { $$=N() };
1.1 paf 681:
682: %%
1.105 paf 683: #endif
1.1 paf 684:
685: /*
686: 000$111(2222)00
687: 000$111{3333}00
1.9 paf 688: $,^: push,=0
1.1 paf 689: 1:( { break=pop
690: 2:( ) pop
691: 3:{ } pop
692:
693: 000^111(2222)4444{33333}4000
1.9 paf 694: $,^: push,=0
1.1 paf 695: 1:( { break=pop
696: 2:( )=4
697: 3:{ }=4
698: 4:[^({]=pop
699: */
700:
1.206 paf 701: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
702: pc.source--;
703: if(pc.pos.col==0) {
704: --pc.pos.line; pc.pos.col=last_line_end_col;
705: } else
706: --pc.pos.col;
707:
708: }
709: static int yylex(YYSTYPE *lvalp, void *apc) {
710: register Parse_control& pc=*static_cast<Parse_control*>(apc);
711:
712: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 713: #define RC {result=c; goto break2; }
1.1 paf 714:
1.206 paf 715: register int c;
716: int result;
1.1 paf 717:
1.206 paf 718: if(pc.pending_state) {
719: result=pc.pending_state;
720: pc.pending_state=0;
1.1 paf 721: return result;
722: }
723:
1.206 paf 724: const char *begin=pc.source;
725: Pos begin_pos=pc.pos;
1.91 paf 726: const char *end;
1.67 paf 727: int skip_analized=0;
1.50 paf 728: while(true) {
1.206 paf 729: c=*(end=(pc.source++));
730: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 731:
1.208 paf 732: if(c=='\n')
1.206 paf 733: pc.pos_next_line();
1.208 paf 734: else
1.206 paf 735: pc.pos_next_c(c);
1.208 paf 736: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 737:
1.208 paf 738: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 739: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 740: // @SPECIAL
741: // ...
742: // @<here =
1.206 paf 743: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 744: } // continuing checks
1.206 paf 745: if(pc.ls==LS_USER) {
746: push_LS(pc, LS_DEF_NAME);
1.171 parser 747: RC;
1.175 paf 748: } else // @ in first column inside some code [when could that be?]
1.171 parser 749: result=BAD_METHOD_DECL_START;
750: goto break2;
1.209 paf 751: }
752: if(c=='^') {
1.206 paf 753: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 754: // handle after-method situation
1.206 paf 755: pop_LS(pc);
1.203 paf 756: result=EON;
757: skip_analized=-1; // return to punctuation afterwards to assure it's literality
758: goto break2;
759: }
1.206 paf 760: switch(pc.ls) {
1.169 parser 761: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
762: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
763: case LS_VAR_NAME_SIMPLE_WITH_COLON:
764: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
765: case LS_VAR_NAME_CURLY:
766: case LS_METHOD_NAME:
1.194 paf 767: case LS_USER_COMMENT:
1.169 parser 768: case LS_DEF_COMMENT:
769: // no literals in names, please
770: break;
771: default:
1.206 paf 772: switch(*pc.source) {
1.165 parser 773: // ^escaping some punctuators
1.228 misha 774: case '^': case '$': case ';': case '@':
1.126 paf 775: case '(': case ')':
1.48 paf 776: case '[': case ']':
777: case '{': case '}':
1.172 parser 778: case '"': case ':':
1.40 paf 779: if(end!=begin) {
1.206 paf 780: if(!pc.string_start)
781: pc.string_start=begin_pos;
1.40 paf 782: // append piece till ^
1.206 paf 783: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 784: }
1.63 paf 785: // reset piece 'begin' position & line
1.206 paf 786: begin=pc.source; // ->punctuation
787: begin_pos=pc.pos;
1.203 paf 788: // skip over _ after ^
1.206 paf 789: pc.source++; pc.pos.col++;
1.203 paf 790: // skip analysis = forced literal
791: continue;
1.114 paf 792:
793: // converting ^#HH into char(hex(HH))
794: case '#':
795: if(end!=begin) {
1.206 paf 796: if(!pc.string_start)
797: pc.string_start=begin_pos;
1.114 paf 798: // append piece till ^
1.206 paf 799: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 800: }
801: // #HH ?
1.228 misha 802: if(pc.source[1] && isxdigit(pc.source[1]) && pc.source[2] && isxdigit(pc.source[2])) {
1.218 paf 803: char c=(char)(
1.206 paf 804: hex_value[(unsigned char)pc.source[1]]*0x10+
1.218 paf 805: hex_value[(unsigned char)pc.source[2]]);
1.206 paf 806: if(c==0) {
1.114 paf 807: result=BAD_HEX_LITERAL;
808: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
809: }
810: // append char(hex(HH))
1.206 paf 811: pc.string.append(c);
1.114 paf 812: // skip over ^#HH
1.206 paf 813: pc.source+=3;
814: pc.pos.col+=3;
1.114 paf 815: // reset piece 'begin' position & line
1.206 paf 816: begin=pc.source; // ->after ^#HH
817: begin_pos=pc.pos;
1.203 paf 818: // skip analysis = forced literal
1.114 paf 819: continue;
820: }
1.228 misha 821: // just escaped char
822: // reset piece 'begin' position & line
823: begin=pc.source;
824: begin_pos=pc.pos;
825: // skip over _ after ^
826: pc.source++; pc.pos.col++;
827: // skip analysis = forced literal
828: continue;
1.1 paf 829: }
1.169 parser 830: break;
1.203 paf 831: }
1.169 parser 832: }
1.113 paf 833: // #comment start skipping
1.206 paf 834: if(c=='#' && pc.pos.col==1) {
1.112 paf 835: if(end!=begin) {
1.206 paf 836: if(!pc.string_start)
837: pc.string_start=begin_pos;
1.112 paf 838: // append piece till #
1.206 paf 839: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 840: }
841: // fall into COMMENT lexical state [wait for \n]
1.206 paf 842: push_LS(pc, LS_USER_COMMENT);
1.175 paf 843: continue;
1.112 paf 844: }
1.206 paf 845: switch(pc.ls) {
1.10 paf 846:
847: // USER'S = NOT OURS
1.1 paf 848: case LS_USER:
1.206 paf 849: case LS_NAME_SQUARE_PART: // name.[here].xxx
850: if(pc.trim_bof)
1.153 parser 851: switch(c) {
852: case '\n': case ' ': case '\t':
1.206 paf 853: begin=pc.source;
854: begin_pos=pc.pos;
1.152 parser 855: continue; // skip it
1.153 parser 856: default:
1.206 paf 857: pc.trim_bof=false;
1.152 parser 858: }
1.48 paf 859: switch(c) {
860: case '$':
1.206 paf 861: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 862: RC;
863: case '^':
1.206 paf 864: push_LS(pc, LS_METHOD_NAME);
1.48 paf 865: RC;
1.166 parser 866: case ']':
1.206 paf 867: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 868: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 869: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 870: RC;
871: }
1.160 parser 872: break;
1.166 parser 873: case '[': // $name.[co<[>de]
1.206 paf 874: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 875: lexical_brackets_nestage++;
1.161 parser 876: break;
1.112 paf 877: }
1.209 paf 878: if(pc.explicit_result && c)
879: switch(c) {
880: case '\n': case ' ': case '\t':
881: begin=pc.source;
882: begin_pos=pc.pos;
883: continue; // skip it
884: default:
885: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
886: goto break2;
887: }
1.112 paf 888: break;
889:
890: // #COMMENT
1.194 paf 891: case LS_USER_COMMENT:
1.112 paf 892: if(c=='\n') {
893: // skip comment
1.206 paf 894: begin=pc.source;
895: begin_pos=pc.pos;
1.112 paf 896:
1.206 paf 897: pop_LS(pc);
1.112 paf 898: continue;
1.1 paf 899: }
1.48 paf 900: break;
901:
902: // STRING IN EXPRESSION
1.145 parser 903: case LS_EXPRESSION_STRING_QUOTED:
904: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 905: switch(c) {
906: case '"':
1.145 parser 907: case '\'':
908: if(
1.206 paf 909: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
910: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
911: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 912: RC;
913: }
914: break;
1.48 paf 915: case '$':
1.206 paf 916: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 917: RC;
918: case '^':
1.206 paf 919: push_LS(pc, LS_METHOD_NAME);
1.48 paf 920: RC;
1.10 paf 921: }
922: break;
923:
924: // METHOD DEFINITION
925: case LS_DEF_NAME:
1.48 paf 926: switch(c) {
927: case '[':
1.206 paf 928: pc.ls=LS_DEF_PARAMS;
1.48 paf 929: RC;
930: case '\n':
1.206 paf 931: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 932: RC;
1.10 paf 933: }
934: break;
1.48 paf 935:
1.10 paf 936: case LS_DEF_PARAMS:
1.48 paf 937: switch(c) {
1.192 paf 938: case '$': // common error
1.193 paf 939: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
940: goto break2;
1.48 paf 941: case ';':
942: RC;
943: case ']':
1.206 paf 944: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 945: RC;
1.49 paf 946: case '\n': // wrong. bailing out
1.206 paf 947: pop_LS(pc);
1.48 paf 948: RC;
1.10 paf 949: }
950: break;
1.48 paf 951:
1.10 paf 952: case LS_DEF_LOCALS:
1.48 paf 953: switch(c) {
954: case '[':
955: case ';':
956: RC;
957: case ']':
1.206 paf 958: pc.ls=LS_DEF_COMMENT;
1.48 paf 959: RC;
960: case '\n': // wrong. bailing out
1.206 paf 961: pop_LS(pc);
1.48 paf 962: RC;
1.10 paf 963: }
964: break;
1.48 paf 965:
1.10 paf 966: case LS_DEF_COMMENT:
967: if(c=='\n') {
1.206 paf 968: pop_LS(pc);
1.48 paf 969: RC;
1.37 paf 970: }
971: break;
972:
1.48 paf 973: case LS_DEF_SPECIAL_BODY:
1.175 paf 974: if(c=='\n')
1.48 paf 975: RC;
976: break;
977:
978: // (EXPRESSION)
1.69 paf 979: case LS_VAR_ROUND:
980: case LS_METHOD_ROUND:
1.48 paf 981: switch(c) {
982: case ')':
983: if(--lexical_brackets_nestage==0)
1.206 paf 984: if(pc.ls==LS_METHOD_ROUND) // method round param ended
985: pc.ls=LS_METHOD_AFTER; // look for method end
986: else // pc.ls==LS_VAR_ROUND // variable constructor ended
987: pop_LS(pc); // return to normal life
1.48 paf 988: RC;
1.194 paf 989: case '#': // comment start skipping
990: if(end!=begin) {
1.206 paf 991: if(!pc.string_start)
992: pc.string_start=begin_pos;
1.194 paf 993: // append piece till #
1.206 paf 994: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 995: }
996: // fall into COMMENT lexical state [wait for \n]
1.206 paf 997: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 998: lexical_brackets_nestage=1;
999: continue;
1.48 paf 1000: case '$':
1.206 paf 1001: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 1002: RC;
1003: case '^':
1.206 paf 1004: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1005: RC;
1006: case '(':
1007: lexical_brackets_nestage++;
1008: RC;
1.67 paf 1009: case '-':
1.206 paf 1010: switch(*pc.source) {
1.127 paf 1011: case 'f': // -f
1.67 paf 1012: skip_analized=1;
1013: result=FEXISTS;
1.127 paf 1014: goto break2;
1015: case 'd': // -d
1016: skip_analized=1;
1017: result=DEXISTS;
1018: goto break2;
1.191 paf 1019: default: // minus
1.67 paf 1020: result=c;
1.127 paf 1021: goto break2;
1022: }
1.67 paf 1023: goto break2;
1.173 paf 1024: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 1025: case '~':
1.48 paf 1026: case ';':
1027: RC;
1.193 paf 1028: case '&': case '|':
1.206 paf 1029: if(*pc.source==c) { // && ||
1.193 paf 1030: result=c=='&'?LAND:LOR;
1.67 paf 1031: skip_analized=1;
1.58 paf 1032: } else
1033: result=c;
1034: goto break2;
1.193 paf 1035: case '!':
1.206 paf 1036: switch(pc.source[0]) {
1.193 paf 1037: case '|': // !| !||
1038: skip_analized=1;
1.206 paf 1039: if(pc.source[1]=='|') {
1.193 paf 1040: skip_analized++;
1041: result=LXOR;
1042: } else
1043: result=NXOR;
1044: goto break2;
1045: case '=': // !=
1046: skip_analized=1;
1047: result=NNE;
1048: goto break2;
1049: }
1050: RC;
1.195 paf 1051:
1052: case '<': // <<, <=, <
1.206 paf 1053: switch(*pc.source) {
1.195 paf 1054: case '<': // <[<]
1055: skip_analized=1; result=NSL; break;
1056: case '=': // <[=]
1057: skip_analized=1; result=NLE; break;
1058: default: // <[]
1059: result=c; break;
1060: }
1061: goto break2;
1062: case '>': // >>, >=, >
1.206 paf 1063: switch(*pc.source) {
1.195 paf 1064: case '>': // >[>]
1065: skip_analized=1; result=NSR; break;
1066: case '=': // >[=]
1067: skip_analized=1; result=NGE; break;
1068: default: // >[]
1069: result=c; break;
1070: }
1071: goto break2;
1072: case '=': // ==
1.206 paf 1073: switch(*pc.source) {
1.195 paf 1074: case '=': // =[=]
1075: skip_analized=1; result=NEQ; break;
1076: default: // =[]
1077: result=c; break; // not used now
1078: }
1.58 paf 1079: goto break2;
1.195 paf 1080:
1.48 paf 1081: case '"':
1.206 paf 1082: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1083: RC;
1084: case '\'':
1.206 paf 1085: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1086: RC;
1.50 paf 1087: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1088: if(end==begin) // right after whitespace
1.206 paf 1089: if(isspace(pc.source[1])) {
1090: switch(*pc.source) {
1.117 paf 1091: // case '?': // ok [and bad cases, yacc would bark at them]
1092: case 't': // lt gt [et nt]
1093: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1094: skip_analized=1;
1095: goto break2;
1096: case 'e': // le ge ne [ee]
1097: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1098: skip_analized=1;
1099: goto break2;
1100: case 'q': // eq [lq gq nq]
1101: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1102: skip_analized=1;
1103: goto break2;
1104: }
1.67 paf 1105: }
1106: break;
1107: case 'i':
1108: if(end==begin) // right after whitespace
1.206 paf 1109: if(isspace(pc.source[1])) {
1110: switch(pc.source[0]) {
1.117 paf 1111: case 'n': // in
1.95 paf 1112: skip_analized=1;
1113: result=IN;
1114: goto break2;
1.117 paf 1115: case 's': // is
1.95 paf 1116: skip_analized=1;
1117: result=IS;
1118: goto break2;
1119: }
1.67 paf 1120: }
1121: break;
1122: case 'd':
1123: if(end==begin) // right after whitespace
1.206 paf 1124: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.225 misha 1125: switch(pc.source[2]){
1126: case ' ': case '\t': case '\n': case '"': case '\'': case '^': case '$': // non-quoted string without whitespace after 'def' is not allowed
1127: skip_analized=2;
1128: result=DEF;
1129: goto break2;
1130: }
1131: // error: incorrect char after 'def'
1.50 paf 1132: }
1.48 paf 1133: break;
1.216 paf 1134: case 't':
1135: if(end==begin) // right after whitespace
1.225 misha 1136: if(pc.source[0]=='r' && pc.source[1]=='u' && pc.source[2]=='e') { // true
1.216 paf 1137: skip_analized=3;
1138: result=LITERAL_TRUE;
1139: goto break2;
1140: }
1141: break;
1142: case 'f':
1143: if(end==begin) // right after whitespace
1.225 misha 1144: if(pc.source[0]=='a' && pc.source[1]=='l' && pc.source[2]=='s' && pc.source[3]=='e') { // false
1.216 paf 1145: skip_analized=4;
1146: result=LITERAL_FALSE;
1147: goto break2;
1148: }
1149: break;
1.48 paf 1150: case ' ': case '\t': case '\n':
1.63 paf 1151: if(end!=begin) { // there were a string after previous operator?
1152: result=0; // return that string
1153: goto break2;
1.48 paf 1154: }
1.63 paf 1155: // that's a leading|traling space or after-operator-space
1156: // ignoring it
1157: // reset piece 'begin' position & line
1.206 paf 1158: begin=pc.source; // after whitespace char
1159: begin_pos=pc.pos;
1.48 paf 1160: continue;
1.1 paf 1161: }
1162: break;
1.194 paf 1163: case LS_EXPRESSION_COMMENT:
1164: if(c=='(')
1165: lexical_brackets_nestage++;
1166:
1.206 paf 1167: switch(*pc.source) {
1.194 paf 1168: case '\n': case ')':
1.206 paf 1169: if(*pc.source==')')
1.194 paf 1170: if(--lexical_brackets_nestage!=0)
1171: continue;
1172:
1173: // skip comment
1.206 paf 1174: begin=pc.source;
1175: begin_pos=pc.pos;
1.194 paf 1176:
1.206 paf 1177: pop_LS(pc);
1.194 paf 1178: continue;
1179: }
1180: break;
1.1 paf 1181:
1.10 paf 1182: // VARIABLE GET/PUT/WITH
1.166 parser 1183: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1184: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1185: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1186: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1187: if(
1.206 paf 1188: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1189: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1190: // name in expr ends also before
1.48 paf 1191: switch(c) {
1.181 paf 1192: // expression minus
1.92 paf 1193: case '-':
1.181 paf 1194: // expression integer division
1195: case '\\':
1.206 paf 1196: pop_LS(pc);
1197: pc.ungetc();
1.48 paf 1198: result=EON;
1199: goto break2;
1200: }
1201: }
1.166 parser 1202: if(
1.206 paf 1203: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1204: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1205: // name already has ':', stop before next
1206: switch(c) {
1207: case ':':
1.206 paf 1208: pop_LS(pc);
1209: pc.ungetc();
1.142 parser 1210: result=EON;
1211: goto break2;
1212: }
1213: }
1.48 paf 1214: switch(c) {
1215: case 0:
1216: case ' ': case '\t': case '\n':
1217: case ';':
1.126 paf 1218: case ']': case '}': case ')':
1219: case '"': case '\'':
1.139 parser 1220: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1221: case '+': case '*': case '/': case '%':
1222: case '&': case '|':
1223: case '=': case '!':
1.99 paf 1224: // common delimiters
1.190 paf 1225: case ',': case '?': case '#':
1.220 paf 1226: // mysql column separators
1227: case '`':
1.139 parser 1228: // before call
1229: case '^':
1.206 paf 1230: pop_LS(pc);
1231: pc.ungetc();
1.13 paf 1232: result=EON;
1.1 paf 1233: goto break2;
1.48 paf 1234: case '[':
1.162 parser 1235: // $name.<[>code]
1.206 paf 1236: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1237: end[-1]=='$'/*was start of get*/ ||
1238: end[-1]==':'/*was class name delim */ ||
1239: end[-1]=='.'/*was name delim */
1.162 parser 1240: )) {
1.206 paf 1241: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1242: lexical_brackets_nestage=1;
1243: RC;
1244: }
1.206 paf 1245: pc.ls=LS_VAR_SQUARE;
1.1 paf 1246: lexical_brackets_nestage=1;
1.48 paf 1247: RC;
1248: case '{':
1249: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1250: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1251: } else {
1.206 paf 1252: pc.ls=LS_VAR_CURLY;
1.48 paf 1253: lexical_brackets_nestage=1;
1254: }
1.69 paf 1255:
1.48 paf 1256: RC;
1257: case '(':
1.206 paf 1258: pc.ls=LS_VAR_ROUND;
1.1 paf 1259: lexical_brackets_nestage=1;
1.48 paf 1260: RC;
1261: case '.': // name part delim
1262: case '$': // name part subvar
1.160 parser 1263: case ':': // class<:>name
1.166 parser 1264: // go to _WITHOUT_COLON state variant...
1.206 paf 1265: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1266: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1267: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1268: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1269: // ...stop before next ':'
1.48 paf 1270: RC;
1.1 paf 1271: }
1272: break;
1.48 paf 1273:
1.1 paf 1274: case LS_VAR_NAME_CURLY:
1.48 paf 1275: switch(c) {
1.162 parser 1276: case '[':
1.166 parser 1277: // ${name.<[>code]}
1.206 paf 1278: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1279: lexical_brackets_nestage=1;
1280: RC;
1.48 paf 1281: case '}': // ${name} finished, restoring LS
1.206 paf 1282: pop_LS(pc);
1.48 paf 1283: RC;
1284: case '.': // name part delim
1285: case '$': // name part subvar
1286: case ':': // ':name' or 'class:name'
1287: RC;
1.1 paf 1288: }
1289: break;
1.48 paf 1290:
1291: case LS_VAR_SQUARE:
1292: switch(c) {
1293: case '$':
1.206 paf 1294: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1295: RC;
1296: case '^':
1.206 paf 1297: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1298: RC;
1299: case ']':
1.1 paf 1300: if(--lexical_brackets_nestage==0) {
1.206 paf 1301: pop_LS(pc);
1.48 paf 1302: RC;
1.1 paf 1303: }
1.48 paf 1304: break;
1305: case ';': // operator_or_fmt;value delim
1306: RC;
1307: case '[':
1308: lexical_brackets_nestage++;
1309: break;
1.1 paf 1310: }
1311: break;
1.48 paf 1312:
1.1 paf 1313: case LS_VAR_CURLY:
1.48 paf 1314: switch(c) {
1315: case '$':
1.206 paf 1316: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1317: RC;
1318: case '^':
1.206 paf 1319: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1320: RC;
1321: case '}':
1.1 paf 1322: if(--lexical_brackets_nestage==0) {
1.206 paf 1323: pop_LS(pc);
1.48 paf 1324: RC;
1.1 paf 1325: }
1.48 paf 1326: break;
1327: case '{':
1.1 paf 1328: lexical_brackets_nestage++;
1.48 paf 1329: break;
1330: }
1.1 paf 1331: break;
1332:
1.10 paf 1333: // METHOD CALL
1.1 paf 1334: case LS_METHOD_NAME:
1.48 paf 1335: switch(c) {
1336: case '[':
1.166 parser 1337: // ^name.<[>code].xxx
1.206 paf 1338: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1339: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1340: end[-1]==':'/*was class name delim */ ||
1341: end[-1]=='.'/*was name delim */
1.162 parser 1342: )) {
1.206 paf 1343: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1344: lexical_brackets_nestage=1;
1345: RC;
1346: }
1.206 paf 1347: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1348: lexical_brackets_nestage=1;
1.48 paf 1349: RC;
1350: case '{':
1.206 paf 1351: pc.ls=LS_METHOD_CURLY;
1.1 paf 1352: lexical_brackets_nestage=1;
1.48 paf 1353: RC;
1.69 paf 1354: case '(':
1.206 paf 1355: pc.ls=LS_METHOD_ROUND;
1.69 paf 1356: lexical_brackets_nestage=1;
1357: RC;
1.48 paf 1358: case '.': // name part delim
1359: case '$': // name part subvar
1360: case ':': // ':name' or 'class:name'
1.170 parser 1361: case '^': // ^abc^xxx wrong. bailing out
1362: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1363: case ' ': // ^if ( wrong. bailing out
1.48 paf 1364: RC;
1.1 paf 1365: }
1366: break;
1.48 paf 1367:
1368: case LS_METHOD_SQUARE:
1369: switch(c) {
1370: case '$':
1.206 paf 1371: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1372: RC;
1373: case '^':
1.206 paf 1374: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1375: RC;
1376: case ';': // param delim
1377: RC;
1378: case ']':
1.1 paf 1379: if(--lexical_brackets_nestage==0) {
1.206 paf 1380: pc.ls=LS_METHOD_AFTER;
1.48 paf 1381: RC;
1.1 paf 1382: }
1.48 paf 1383: break;
1384: case '[':
1.1 paf 1385: lexical_brackets_nestage++;
1.48 paf 1386: break;
1387: }
1.1 paf 1388: break;
1.48 paf 1389:
1.1 paf 1390: case LS_METHOD_CURLY:
1.48 paf 1391: switch(c) {
1392: case '$':
1.206 paf 1393: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1394: RC;
1395: case '^':
1.206 paf 1396: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1397: RC;
1398: case ';': // param delim
1.48 paf 1399: RC;
1400: case '}':
1.1 paf 1401: if(--lexical_brackets_nestage==0) {
1.206 paf 1402: pc.ls=LS_METHOD_AFTER;
1.48 paf 1403: RC;
1.1 paf 1404: }
1.48 paf 1405: break;
1406: case '{':
1.1 paf 1407: lexical_brackets_nestage++;
1.48 paf 1408: break;
1409: }
1.209 paf 1410: if(pc.explicit_result && c)
1411: switch(c) {
1412: case '\n': case ' ': case '\t':
1413: begin=pc.source;
1414: begin_pos=pc.pos;
1415: continue; // skip it
1416: default:
1417: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
1418: goto break2;
1419: }
1.1 paf 1420: break;
1.48 paf 1421:
1.1 paf 1422: case LS_METHOD_AFTER:
1.69 paf 1423: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1424: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1425: lexical_brackets_nestage=1;
1.48 paf 1426: RC;
1.1 paf 1427: }
1.69 paf 1428: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1429: pc.ls=LS_METHOD_CURLY;
1.69 paf 1430: lexical_brackets_nestage=1;
1431: RC;
1432: }
1433: if(c=='(') {/* ]( }( )( */
1.206 paf 1434: pc.ls=LS_METHOD_ROUND;
1.1 paf 1435: lexical_brackets_nestage=1;
1.48 paf 1436: RC;
1.1 paf 1437: }
1.206 paf 1438: pop_LS(pc);
1439: pc.ungetc();
1.13 paf 1440: result=EON;
1.1 paf 1441: goto break2;
1442: }
1.9 paf 1443: if(c==0) {
1.1 paf 1444: result=-1;
1445: break;
1446: }
1447: }
1448:
1449: break2:
1.59 paf 1450: if(end!=begin) { // there is last piece?
1451: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1452: // strip last \n
1.10 paf 1453: end--;
1.137 parser 1454: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1455: end--;
1.59 paf 1456: }
1.206 paf 1457: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1458: if(!pc.string_start)
1459: pc.string_start=begin_pos;
1.59 paf 1460: // append it
1.206 paf 1461: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1462: }
1.59 paf 1463: }
1.206 paf 1464: if(!pc.string.is_empty()) { // something accumulated?
1465: // create STRING value: array of OP_VALUE+origin+vstring
1466: *lvalp=VL(
1467: new VString(*new String(pc.string, String::L_CLEAN)),
1468: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1469: // new pieces storage
1.206 paf 1470: pc.string.clear();
1471: pc.string_start.clear();
1.58 paf 1472: // make current result be pending for next call, return STRING for now
1.206 paf 1473: pc.pending_state=result; result=STRING;
1.58 paf 1474: }
1.67 paf 1475: if(skip_analized) {
1.206 paf 1476: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1477: }
1.58 paf 1478: return result;
1.1 paf 1479: }
1480:
1.206 paf 1481: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1482: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1483: return 1;
1.110 paf 1484: }
1.1 paf 1485:
1.110 paf 1486: static void yyprint(FILE *file, int type, YYSTYPE value) {
1487: if(type==STRING)
1.206 paf 1488: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1489: }
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