Annotation of parser3/src/main/compile.y, revision 1.235
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:
1.235 ! misha 8: $Id: compile.y,v 1.234 2009-04-29 03:26:50 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: $$=$1; /* stack: resulting value */
1.235 ! misha 320: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.233 misha 321: if(!replace_top_opcode(*$$, OP::OP_VALUE__GET_ELEMENT, OP::OP_VALUE__GET_ELEMENT__WRITE))
1.235 ! misha 322: #endif
1.233 misha 323: changetail_or_append(*$$,
324: OP::OP_GET_ELEMENT, false, /*->*/OP::OP_GET_ELEMENT__WRITE,
325: /*or */OP::OP_WRITE_VALUE
326: ); /* value=pop; wcontext.write(value) */
1.1 paf 327: };
1.163 parser 328: get_value: '$' get_name_value { $$=$2 };
1.64 paf 329: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 330: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 331: name_without_curly_rdive:
332: name_without_curly_rdive_read
333: | name_without_curly_rdive_class;
1.19 paf 334: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 335: $$=N();
336: ArrayOperation* diving_code=$1;
337: const String* first_name=LA2S(*diving_code);
1.179 paf 338: // self.xxx... -> xxx...
1.206 paf 339: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 340: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.229 misha 341: O(*yyval, OP::OP_WITH_SELF); /* stack: starting context */
1.206 paf 342: P(*yyval, *diving_code,
1.22 paf 343: /* skip over... */
1.229 misha 344: diving_code->count()>=4?4/*OP::OP_VALUE+origin+string+OP::OP_GET_ELEMENTx*/:3/*OP::OP_+origin+string*/);
1.22 paf 345: } else {
1.233 misha 346: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
347: if(diving_code->count()==4){ // optimisations for simple (but very popular) cases
348: O(*yyval,
349: (PC.in_call_value) // ^call
350: ? OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR // OP_VALUE+origin+string+OP_GET_ELEMENT -> OP_VALUE__GET_ELEMENT_OR_OPERATOR+origin+string
351: : OP::OP_VALUE__GET_ELEMENT // OP_VALUE+origin+string+OP_GET_ELEMENT -> OP_VALUE__GET_ELEMENT+origin+string
352: );
353: P(*$$, *diving_code, 1/*offset==1: skip leading OP_VALUE*/, 2/*limit==2: skip trailing OP_GET_ELEMENT*/);
354: } else {
355: O(*yyval, OP::OP_WITH_READ); /* stack: starting context */
356: P(*$$, *diving_code);
357: }
358: #else
1.229 misha 359: O(*yyval, OP::OP_WITH_READ); /* stack: starting context */
1.179 paf 360:
1.201 paf 361: // ^if ELEMENT -> ^if ELEMENT_OR_OPERATOR
1.206 paf 362: // OP_VALUE+origin+string+OP_GET_ELEMENT. -> OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
363: if(PC.in_call_value && diving_code->count()==4)
1.229 misha 364: diving_code->put(4-1, OP::OP_GET_ELEMENT_OR_OPERATOR);
1.206 paf 365: P(*$$, *diving_code);
1.233 misha 366: #endif
1.22 paf 367: }
368: /* diving code; stack: current context */
1.1 paf 369: };
1.206 paf 370: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2) };
371: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2) };
1.1 paf 372:
373: /* put */
374:
1.81 paf 375: put: '$' name_expr_wdive construct {
1.20 paf 376: $$=$2; /* stack: context,name */
1.206 paf 377: P(*$$, *$3); /* stack: context,name,constructor_value */
1.20 paf 378: };
1.44 paf 379: name_expr_wdive:
1.157 parser 380: name_expr_wdive_root
381: | name_expr_wdive_write
1.44 paf 382: | name_expr_wdive_class;
1.157 parser 383: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 384: $$=N();
385: ArrayOperation* diving_code=$1;
386: const String* first_name=LA2S(*diving_code);
1.179 paf 387: // $self.xxx... -> $xxx...
1.206 paf 388: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 389: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.229 misha 390: O(*$$, OP::OP_WITH_SELF); /* stack: starting context */
1.206 paf 391: P(*$$, *diving_code,
1.23 paf 392: /* skip over... */
1.229 misha 393: diving_code->count()>=4?4/*OP::OP_VALUE+origin+string+OP::OP_GET_ELEMENTx*/:3/*OP::OP_+origin+string*/);
1.23 paf 394: } else {
1.229 misha 395: O(*$$, OP::OP_WITH_ROOT); /* stack: starting context */
1.206 paf 396: P(*$$, *diving_code);
1.23 paf 397: }
398: /* diving code; stack: current context */
1.156 parser 399: };
1.157 parser 400: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 401: $$=N();
1.229 misha 402: O(*$$, OP::OP_WITH_WRITE); /* stack: starting context */
1.206 paf 403: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 404: };
1.206 paf 405: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2) };
1.20 paf 406:
1.149 parser 407: construct:
1.163 parser 408: construct_square
409: | construct_round
410: | construct_curly
1.149 parser 411: ;
1.211 paf 412: construct_square: '[' {
413: // allow $result_or_other_variable[ letters here any time ]
414: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
415: } any_constructor_code_value {
1.213 paf 416: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.211 paf 417: } ']' {
1.149 parser 418: // stack: context, name
1.211 paf 419: $$=$3; // stack: context, name, value
1.229 misha 420: O(*$$, OP::OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 421: }
422: ;
1.149 parser 423: construct_round: '(' expr_value ')' {
1.206 paf 424: $$=N();
1.229 misha 425: O(*$$, OP::OP_PREPARE_TO_EXPRESSION);
1.149 parser 426: // stack: context, name
1.206 paf 427: P(*$$, *$2); // stack: context, name, value
1.229 misha 428: O(*$$, OP::OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 429: }
1.52 paf 430: ;
1.149 parser 431: construct_curly: '{' maybe_codes '}' {
432: // stack: context, name
1.206 paf 433: $$=N();
1.229 misha 434: OA(*$$, OP::OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 435: };
436:
1.55 paf 437: any_constructor_code_value:
1.157 parser 438: void_value /* optimized $var[] case */
1.52 paf 439: | STRING /* optimized $var[STRING] case */
1.55 paf 440: | constructor_code_value /* $var[something complex] */
1.1 paf 441: ;
1.55 paf 442: constructor_code_value: constructor_code {
1.206 paf 443: $$=N();
1.229 misha 444: OA(*$$, OP::OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 445: /* some code that writes to that context */
446: /* context=pop; stack: context.value() */
1.1 paf 447: };
1.55 paf 448: constructor_code: codes__excluding_sole_str_literal;
1.206 paf 449: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 450:
1.1 paf 451: /* call */
452:
1.66 paf 453: call: call_value {
454: $$=$1; /* stack: value */
1.206 paf 455: changetail_or_append(*$$,
1.229 misha 456: OP::OP_CALL, true, /*->*/ OP::OP_CALL__WRITE,
457: /*or */OP::OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.66 paf 458: };
1.177 paf 459: call_value: '^' {
1.180 paf 460: PC.in_call_value=true;
1.177 paf 461: }
462: call_name {
1.180 paf 463: PC.in_call_value=false;
1.177 paf 464: }
1.154 parser 465: store_params EON { /* ^field.$method{vasya} */
466: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 467:
1.154 parser 468: YYSTYPE params_code=$5;
1.234 misha 469: if(params_code->count()==3) { // probably [] case. [OP::OP_VALUE+origin+Void]
1.206 paf 470: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.219 paf 471: if(value->is_void()) // value is VVoid?
1.123 paf 472: params_code=0; // ^zzz[] case. don't append lone empty param.
1.186 paf 473: }
474: /* stack: context, method_junction */
1.229 misha 475: OA(*$$, OP::OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
1.1 paf 476: };
477:
1.43 paf 478: call_name: name_without_curly_rdive;
1.38 paf 479:
1.206 paf 480: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2) };
1.69 paf 481: store_param:
482: store_square_param
483: | store_round_param
484: | store_curly_param
1.31 paf 485: ;
1.210 paf 486: store_square_param: '[' {
1.211 paf 487: // allow ^call[ letters here any time ]
1.210 paf 488: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
489: } store_code_param_parts {
1.213 paf 490: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.210 paf 491: } ']' {$$=$3};
1.69 paf 492: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 493: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 494: store_code_param_parts:
495: store_code_param_part
1.206 paf 496: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 497: ;
498: store_expr_param_parts:
499: store_expr_param_part
1.206 paf 500: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 501: ;
1.94 paf 502: store_curly_param_parts:
503: store_curly_param_part
1.206 paf 504: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3) }
1.94 paf 505: ;
1.120 paf 506: store_code_param_part: code_param_value {
1.32 paf 507: $$=$1;
1.120 paf 508: };
1.214 paf 509: store_expr_param_part: expr_value {
510: YYSTYPE expr_code=$1;
1.215 paf 511: if(expr_code->count()==3
1.234 misha 512: && (*expr_code)[0].code==OP::OP_VALUE) { // optimizing (double/bool/incidently 'string' too) case. [OP::OP_VALUE+origin+Double]. no evaluating
1.214 paf 513: $$=expr_code;
514: } else {
515: ArrayOperation* code=N();
1.229 misha 516: O(*code, OP::OP_PREPARE_TO_EXPRESSION);
1.214 paf 517: P(*code, *expr_code);
1.229 misha 518: O(*code, OP::OP_WRITE_EXPR_RESULT);
1.214 paf 519: $$=N();
1.229 misha 520: OA(*$$, OP::OP_EXPR_CODE__STORE_PARAM, code);
1.214 paf 521: }
1.69 paf 522: };
1.94 paf 523: store_curly_param_part: maybe_codes {
1.206 paf 524: $$=N();
1.229 misha 525: OA(*$$, OP::OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 526: };
1.120 paf 527: code_param_value:
1.157 parser 528: void_value /* optimized [;...] case */
1.120 paf 529: | STRING /* optimized [STRING] case */
530: | constructor_code_value /* [something complex] */
531: ;
1.1 paf 532:
533: /* name */
534:
1.206 paf 535: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 536:
1.206 paf 537: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 538: name_step: name_advance1 '.';
539: name_advance1: name_expr_value {
1.177 paf 540: // we know that name_advance1 not called from ^xxx context
541: // so we'll not check for operator call possibility as we do in name_advance2
542:
1.1 paf 543: /* stack: context */
544: $$=$1; /* stack: context,name */
1.229 misha 545: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 546: };
547: name_advance2: name_expr_value {
548: /* stack: context */
549: $$=$1; /* stack: context,name */
1.229 misha 550: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 551: }
1.4 paf 552: | STRING BOGUS
1.1 paf 553: ;
554: name_expr_value:
1.4 paf 555: STRING /* subname_is_const */
1.1 paf 556: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 557: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 558: | name_square_code_value /* [codes] */
1.1 paf 559: ;
560: name_expr_subvar_value: '$' subvar_ref_name_rdive {
561: $$=$2;
1.229 misha 562: O(*$$, OP::OP_GET_ELEMENT);
1.1 paf 563: };
1.4 paf 564: name_expr_with_subvar_value: STRING subvar_get_writes {
1.206 paf 565: ArrayOperation* code;
1.183 paf 566: {
1.206 paf 567: change_string_literal_to_write_string_literal(*(code=$1));
568: P(*code, *$2);
1.183 paf 569: }
1.206 paf 570: $$=N();
1.229 misha 571: OA(*$$, OP::OP_STRING_POOL, code);
1.1 paf 572: };
1.212 paf 573: name_square_code_value: '[' {
574: // allow $result_or_other_variable[ letters here any time ]
575: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
576: } codes {
1.213 paf 577: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.212 paf 578: } ']' {
1.206 paf 579: $$=N();
1.229 misha 580: OA(*$$, OP::OP_OBJECT_POOL, $3); /* stack: empty write context */
1.183 paf 581: /* some code that writes to that context */
582: /* context=pop; stack: context.value() */
1.160 parser 583: };
1.154 parser 584: subvar_ref_name_rdive: STRING {
1.206 paf 585: $$=N();
1.229 misha 586: O(*$$, OP::OP_WITH_READ);
1.206 paf 587: P(*$$, *$1);
1.1 paf 588: };
1.206 paf 589: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 590: subvar__get_write: '$' subvar_ref_name_rdive {
591: $$=$2;
1.229 misha 592: O(*$$, OP::OP_GET_ELEMENT__WRITE);
1.42 paf 593: };
594:
1.154 parser 595: class_prefix:
596: class_static_prefix
597: | class_constructor_prefix
598: ;
1.155 parser 599: class_static_prefix: STRING ':' {
600: $$=$1; // stack: class name string
1.206 paf 601: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
602: if(VStateless_class* base=PC.cclass->base_class()) {
603: change_string_literal_value(*$$, base->name());
1.189 paf 604: } else {
605: strcpy(PC.error, "no base class declared");
606: YYERROR;
607: }
608: }
1.233 misha 609: #ifdef OPTIMIZE_BYTECODE_GET_CLASS
610: // OP_VALUE+origin+string+OP_GET_CLASS -> OP_VALUE__GET_CLASS+origin+string
611: replace_top_opcode(*$$, OP::OP_VALUE, OP::OP_VALUE__GET_CLASS, true/*assert if top opcode != OP_VALUE*/)
612: #else
1.229 misha 613: O(*$$, OP::OP_GET_CLASS);
1.233 misha 614: #endif
1.155 parser 615: };
616: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 617: $$=$1;
1.180 paf 618: if(!PC.in_call_value) {
1.154 parser 619: strcpy(PC.error, ":: not allowed here");
620: YYERROR;
621: }
1.229 misha 622: O(*$$, OP::OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 623: };
624:
1.53 paf 625:
1.56 paf 626: /* expr */
1.53 paf 627:
1.214 paf 628: expr_value: expr;
1.56 paf 629: expr:
1.214 paf 630: double_or_STRING
1.216 paf 631: | true_value
632: | false_value
1.64 paf 633: | get_value
1.66 paf 634: | call_value
1.216 paf 635: | '"' string_inside_quotes_value '"' { $$ = $2 }
636: | '\'' string_inside_quotes_value '\'' { $$ = $2 }
1.60 paf 637: | '(' expr ')' { $$ = $2; }
638: /* stack: operand // stack: @operand */
1.229 misha 639: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP::OP_NEG) }
1.202 paf 640: | '+' expr %prec NUNARY { $$=$2 }
1.229 misha 641: | '~' expr { $$=$2; O(*$$, OP::OP_INV) }
642: | '!' expr { $$=$2; O(*$$, OP::OP_NOT) }
643: | "def" expr { $$=$2; O(*$$, OP::OP_DEF) }
644: | "in" expr { $$=$2; O(*$$, OP::OP_IN) }
645: | "-f" expr { $$=$2; O(*$$, OP::OP_FEXISTS) }
646: | "-d" expr { $$=$2; O(*$$, OP::OP_DEXISTS) }
1.60 paf 647: /* stack: a,b // stack: a@b */
1.229 misha 648: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_SUB) }
649: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_ADD) }
650: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MUL) }
651: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_DIV) }
652: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MOD) }
653: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_INTDIV) }
654: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SL) }
655: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SR) }
656: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_AND) }
657: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_OR) }
658: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_XOR) }
659: | expr "&&" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_AND) }
660: | expr "||" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_OR) }
661: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_LOG_XOR) }
662: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LT) }
663: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GT) }
664: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LE) }
665: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GE) }
666: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_EQ) }
667: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_NE) }
668: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LT) }
669: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GT) }
670: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LE) }
671: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GE) }
672: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_EQ) }
673: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_NE) }
674: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_IS) }
1.56 paf 675: ;
1.214 paf 676:
677: double_or_STRING: STRING {
678: // optimized from OP_STRING->OP_VALUE for doubles
679: maybe_change_string_literal_to_double_literal(*($$=$1));
680: };
1.55 paf 681:
1.65 paf 682: string_inside_quotes_value: maybe_codes {
1.206 paf 683: $$=N();
1.229 misha 684: OA(*$$, OP::OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 685: /* some code that writes to that context */
686: /* context=pop; stack: context.get_string() */
1.53 paf 687: };
1.1 paf 688:
1.27 paf 689: /* basics */
1.1 paf 690:
1.81 paf 691: write_string: STRING {
1.209 paf 692: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
693: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 694: };
695:
1.216 paf 696: void_value: /* empty */ { $$=VL(/*we know that we will not change it*/const_cast<VVoid*>(&vvoid), 0, 0, 0) }
697: true_value: "true" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vtrue), 0, 0, 0) }
698: false_value: "false" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vfalse), 0, 0, 0) }
699:
1.206 paf 700: empty: /* empty */ { $$=N() };
1.1 paf 701:
702: %%
1.105 paf 703: #endif
1.1 paf 704:
705: /*
706: 000$111(2222)00
707: 000$111{3333}00
1.9 paf 708: $,^: push,=0
1.1 paf 709: 1:( { break=pop
710: 2:( ) pop
711: 3:{ } pop
712:
713: 000^111(2222)4444{33333}4000
1.9 paf 714: $,^: push,=0
1.1 paf 715: 1:( { break=pop
716: 2:( )=4
717: 3:{ }=4
718: 4:[^({]=pop
719: */
720:
1.206 paf 721: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
722: pc.source--;
723: if(pc.pos.col==0) {
724: --pc.pos.line; pc.pos.col=last_line_end_col;
725: } else
726: --pc.pos.col;
727:
728: }
729: static int yylex(YYSTYPE *lvalp, void *apc) {
730: register Parse_control& pc=*static_cast<Parse_control*>(apc);
731:
732: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 733: #define RC {result=c; goto break2; }
1.1 paf 734:
1.206 paf 735: register int c;
736: int result;
1.1 paf 737:
1.206 paf 738: if(pc.pending_state) {
739: result=pc.pending_state;
740: pc.pending_state=0;
1.1 paf 741: return result;
742: }
743:
1.206 paf 744: const char *begin=pc.source;
745: Pos begin_pos=pc.pos;
1.91 paf 746: const char *end;
1.67 paf 747: int skip_analized=0;
1.50 paf 748: while(true) {
1.206 paf 749: c=*(end=(pc.source++));
750: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 751:
1.208 paf 752: if(c=='\n')
1.206 paf 753: pc.pos_next_line();
1.208 paf 754: else
1.206 paf 755: pc.pos_next_c(c);
1.208 paf 756: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 757:
1.208 paf 758: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 759: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 760: // @SPECIAL
761: // ...
762: // @<here =
1.206 paf 763: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 764: } // continuing checks
1.206 paf 765: if(pc.ls==LS_USER) {
766: push_LS(pc, LS_DEF_NAME);
1.171 parser 767: RC;
1.175 paf 768: } else // @ in first column inside some code [when could that be?]
1.171 parser 769: result=BAD_METHOD_DECL_START;
770: goto break2;
1.209 paf 771: }
772: if(c=='^') {
1.206 paf 773: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 774: // handle after-method situation
1.206 paf 775: pop_LS(pc);
1.203 paf 776: result=EON;
777: skip_analized=-1; // return to punctuation afterwards to assure it's literality
778: goto break2;
779: }
1.206 paf 780: switch(pc.ls) {
1.169 parser 781: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
782: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
783: case LS_VAR_NAME_SIMPLE_WITH_COLON:
784: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
785: case LS_VAR_NAME_CURLY:
786: case LS_METHOD_NAME:
1.194 paf 787: case LS_USER_COMMENT:
1.169 parser 788: case LS_DEF_COMMENT:
789: // no literals in names, please
790: break;
791: default:
1.206 paf 792: switch(*pc.source) {
1.165 parser 793: // ^escaping some punctuators
1.228 misha 794: case '^': case '$': case ';': case '@':
1.126 paf 795: case '(': case ')':
1.48 paf 796: case '[': case ']':
797: case '{': case '}':
1.172 parser 798: case '"': case ':':
1.40 paf 799: if(end!=begin) {
1.206 paf 800: if(!pc.string_start)
801: pc.string_start=begin_pos;
1.40 paf 802: // append piece till ^
1.206 paf 803: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 804: }
1.63 paf 805: // reset piece 'begin' position & line
1.206 paf 806: begin=pc.source; // ->punctuation
807: begin_pos=pc.pos;
1.203 paf 808: // skip over _ after ^
1.206 paf 809: pc.source++; pc.pos.col++;
1.203 paf 810: // skip analysis = forced literal
811: continue;
1.114 paf 812:
813: // converting ^#HH into char(hex(HH))
814: case '#':
815: if(end!=begin) {
1.206 paf 816: if(!pc.string_start)
817: pc.string_start=begin_pos;
1.114 paf 818: // append piece till ^
1.206 paf 819: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 820: }
821: // #HH ?
1.228 misha 822: if(pc.source[1] && isxdigit(pc.source[1]) && pc.source[2] && isxdigit(pc.source[2])) {
1.218 paf 823: char c=(char)(
1.206 paf 824: hex_value[(unsigned char)pc.source[1]]*0x10+
1.218 paf 825: hex_value[(unsigned char)pc.source[2]]);
1.206 paf 826: if(c==0) {
1.114 paf 827: result=BAD_HEX_LITERAL;
828: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
829: }
830: // append char(hex(HH))
1.206 paf 831: pc.string.append(c);
1.114 paf 832: // skip over ^#HH
1.206 paf 833: pc.source+=3;
834: pc.pos.col+=3;
1.114 paf 835: // reset piece 'begin' position & line
1.206 paf 836: begin=pc.source; // ->after ^#HH
837: begin_pos=pc.pos;
1.203 paf 838: // skip analysis = forced literal
1.114 paf 839: continue;
840: }
1.228 misha 841: // just escaped char
842: // reset piece 'begin' position & line
843: begin=pc.source;
844: begin_pos=pc.pos;
845: // skip over _ after ^
846: pc.source++; pc.pos.col++;
847: // skip analysis = forced literal
848: continue;
1.1 paf 849: }
1.169 parser 850: break;
1.203 paf 851: }
1.169 parser 852: }
1.113 paf 853: // #comment start skipping
1.206 paf 854: if(c=='#' && pc.pos.col==1) {
1.112 paf 855: if(end!=begin) {
1.206 paf 856: if(!pc.string_start)
857: pc.string_start=begin_pos;
1.112 paf 858: // append piece till #
1.206 paf 859: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 860: }
861: // fall into COMMENT lexical state [wait for \n]
1.206 paf 862: push_LS(pc, LS_USER_COMMENT);
1.175 paf 863: continue;
1.112 paf 864: }
1.206 paf 865: switch(pc.ls) {
1.10 paf 866:
867: // USER'S = NOT OURS
1.1 paf 868: case LS_USER:
1.206 paf 869: case LS_NAME_SQUARE_PART: // name.[here].xxx
870: if(pc.trim_bof)
1.153 parser 871: switch(c) {
872: case '\n': case ' ': case '\t':
1.206 paf 873: begin=pc.source;
874: begin_pos=pc.pos;
1.152 parser 875: continue; // skip it
1.153 parser 876: default:
1.206 paf 877: pc.trim_bof=false;
1.152 parser 878: }
1.48 paf 879: switch(c) {
880: case '$':
1.206 paf 881: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 882: RC;
883: case '^':
1.206 paf 884: push_LS(pc, LS_METHOD_NAME);
1.48 paf 885: RC;
1.166 parser 886: case ']':
1.206 paf 887: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 888: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 889: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 890: RC;
891: }
1.160 parser 892: break;
1.166 parser 893: case '[': // $name.[co<[>de]
1.206 paf 894: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 895: lexical_brackets_nestage++;
1.161 parser 896: break;
1.112 paf 897: }
1.209 paf 898: if(pc.explicit_result && c)
899: switch(c) {
900: case '\n': case ' ': case '\t':
901: begin=pc.source;
902: begin_pos=pc.pos;
903: continue; // skip it
904: default:
905: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
906: goto break2;
907: }
1.112 paf 908: break;
909:
910: // #COMMENT
1.194 paf 911: case LS_USER_COMMENT:
1.112 paf 912: if(c=='\n') {
913: // skip comment
1.206 paf 914: begin=pc.source;
915: begin_pos=pc.pos;
1.112 paf 916:
1.206 paf 917: pop_LS(pc);
1.112 paf 918: continue;
1.1 paf 919: }
1.48 paf 920: break;
921:
922: // STRING IN EXPRESSION
1.145 parser 923: case LS_EXPRESSION_STRING_QUOTED:
924: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 925: switch(c) {
926: case '"':
1.145 parser 927: case '\'':
928: if(
1.206 paf 929: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
930: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
931: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 932: RC;
933: }
934: break;
1.48 paf 935: case '$':
1.206 paf 936: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 937: RC;
938: case '^':
1.206 paf 939: push_LS(pc, LS_METHOD_NAME);
1.48 paf 940: RC;
1.10 paf 941: }
942: break;
943:
944: // METHOD DEFINITION
945: case LS_DEF_NAME:
1.48 paf 946: switch(c) {
947: case '[':
1.206 paf 948: pc.ls=LS_DEF_PARAMS;
1.48 paf 949: RC;
950: case '\n':
1.206 paf 951: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 952: RC;
1.10 paf 953: }
954: break;
1.48 paf 955:
1.10 paf 956: case LS_DEF_PARAMS:
1.48 paf 957: switch(c) {
1.192 paf 958: case '$': // common error
1.193 paf 959: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
960: goto break2;
1.48 paf 961: case ';':
962: RC;
963: case ']':
1.206 paf 964: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 965: RC;
1.49 paf 966: case '\n': // wrong. bailing out
1.206 paf 967: pop_LS(pc);
1.48 paf 968: RC;
1.10 paf 969: }
970: break;
1.48 paf 971:
1.10 paf 972: case LS_DEF_LOCALS:
1.48 paf 973: switch(c) {
974: case '[':
975: case ';':
976: RC;
977: case ']':
1.206 paf 978: pc.ls=LS_DEF_COMMENT;
1.48 paf 979: RC;
980: case '\n': // wrong. bailing out
1.206 paf 981: pop_LS(pc);
1.48 paf 982: RC;
1.10 paf 983: }
984: break;
1.48 paf 985:
1.10 paf 986: case LS_DEF_COMMENT:
987: if(c=='\n') {
1.206 paf 988: pop_LS(pc);
1.48 paf 989: RC;
1.37 paf 990: }
991: break;
992:
1.48 paf 993: case LS_DEF_SPECIAL_BODY:
1.175 paf 994: if(c=='\n')
1.48 paf 995: RC;
996: break;
997:
998: // (EXPRESSION)
1.69 paf 999: case LS_VAR_ROUND:
1000: case LS_METHOD_ROUND:
1.48 paf 1001: switch(c) {
1002: case ')':
1003: if(--lexical_brackets_nestage==0)
1.206 paf 1004: if(pc.ls==LS_METHOD_ROUND) // method round param ended
1005: pc.ls=LS_METHOD_AFTER; // look for method end
1006: else // pc.ls==LS_VAR_ROUND // variable constructor ended
1007: pop_LS(pc); // return to normal life
1.48 paf 1008: RC;
1.194 paf 1009: case '#': // comment start skipping
1010: if(end!=begin) {
1.206 paf 1011: if(!pc.string_start)
1012: pc.string_start=begin_pos;
1.194 paf 1013: // append piece till #
1.206 paf 1014: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 1015: }
1016: // fall into COMMENT lexical state [wait for \n]
1.206 paf 1017: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 1018: lexical_brackets_nestage=1;
1019: continue;
1.48 paf 1020: case '$':
1.206 paf 1021: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 1022: RC;
1023: case '^':
1.206 paf 1024: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1025: RC;
1026: case '(':
1027: lexical_brackets_nestage++;
1028: RC;
1.67 paf 1029: case '-':
1.206 paf 1030: switch(*pc.source) {
1.127 paf 1031: case 'f': // -f
1.67 paf 1032: skip_analized=1;
1033: result=FEXISTS;
1.127 paf 1034: goto break2;
1035: case 'd': // -d
1036: skip_analized=1;
1037: result=DEXISTS;
1038: goto break2;
1.191 paf 1039: default: // minus
1.67 paf 1040: result=c;
1.127 paf 1041: goto break2;
1042: }
1.67 paf 1043: goto break2;
1.173 paf 1044: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 1045: case '~':
1.48 paf 1046: case ';':
1047: RC;
1.193 paf 1048: case '&': case '|':
1.206 paf 1049: if(*pc.source==c) { // && ||
1.193 paf 1050: result=c=='&'?LAND:LOR;
1.67 paf 1051: skip_analized=1;
1.58 paf 1052: } else
1053: result=c;
1054: goto break2;
1.193 paf 1055: case '!':
1.206 paf 1056: switch(pc.source[0]) {
1.193 paf 1057: case '|': // !| !||
1058: skip_analized=1;
1.206 paf 1059: if(pc.source[1]=='|') {
1.193 paf 1060: skip_analized++;
1061: result=LXOR;
1062: } else
1063: result=NXOR;
1064: goto break2;
1065: case '=': // !=
1066: skip_analized=1;
1067: result=NNE;
1068: goto break2;
1069: }
1070: RC;
1.195 paf 1071:
1072: case '<': // <<, <=, <
1.206 paf 1073: switch(*pc.source) {
1.195 paf 1074: case '<': // <[<]
1075: skip_analized=1; result=NSL; break;
1076: case '=': // <[=]
1077: skip_analized=1; result=NLE; break;
1078: default: // <[]
1079: result=c; break;
1080: }
1081: goto break2;
1082: case '>': // >>, >=, >
1.206 paf 1083: switch(*pc.source) {
1.195 paf 1084: case '>': // >[>]
1085: skip_analized=1; result=NSR; break;
1086: case '=': // >[=]
1087: skip_analized=1; result=NGE; break;
1088: default: // >[]
1089: result=c; break;
1090: }
1091: goto break2;
1092: case '=': // ==
1.206 paf 1093: switch(*pc.source) {
1.195 paf 1094: case '=': // =[=]
1095: skip_analized=1; result=NEQ; break;
1096: default: // =[]
1097: result=c; break; // not used now
1098: }
1.58 paf 1099: goto break2;
1.195 paf 1100:
1.48 paf 1101: case '"':
1.206 paf 1102: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1103: RC;
1104: case '\'':
1.206 paf 1105: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1106: RC;
1.50 paf 1107: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1108: if(end==begin) // right after whitespace
1.206 paf 1109: if(isspace(pc.source[1])) {
1110: switch(*pc.source) {
1.117 paf 1111: // case '?': // ok [and bad cases, yacc would bark at them]
1112: case 't': // lt gt [et nt]
1113: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1114: skip_analized=1;
1115: goto break2;
1116: case 'e': // le ge ne [ee]
1117: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1118: skip_analized=1;
1119: goto break2;
1120: case 'q': // eq [lq gq nq]
1121: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1122: skip_analized=1;
1123: goto break2;
1124: }
1.67 paf 1125: }
1126: break;
1127: case 'i':
1128: if(end==begin) // right after whitespace
1.206 paf 1129: if(isspace(pc.source[1])) {
1130: switch(pc.source[0]) {
1.117 paf 1131: case 'n': // in
1.95 paf 1132: skip_analized=1;
1133: result=IN;
1134: goto break2;
1.117 paf 1135: case 's': // is
1.95 paf 1136: skip_analized=1;
1137: result=IS;
1138: goto break2;
1139: }
1.67 paf 1140: }
1141: break;
1142: case 'd':
1143: if(end==begin) // right after whitespace
1.206 paf 1144: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.225 misha 1145: switch(pc.source[2]){
1146: case ' ': case '\t': case '\n': case '"': case '\'': case '^': case '$': // non-quoted string without whitespace after 'def' is not allowed
1147: skip_analized=2;
1148: result=DEF;
1149: goto break2;
1150: }
1151: // error: incorrect char after 'def'
1.50 paf 1152: }
1.48 paf 1153: break;
1.216 paf 1154: case 't':
1155: if(end==begin) // right after whitespace
1.225 misha 1156: if(pc.source[0]=='r' && pc.source[1]=='u' && pc.source[2]=='e') { // true
1.216 paf 1157: skip_analized=3;
1158: result=LITERAL_TRUE;
1159: goto break2;
1160: }
1161: break;
1162: case 'f':
1163: if(end==begin) // right after whitespace
1.225 misha 1164: if(pc.source[0]=='a' && pc.source[1]=='l' && pc.source[2]=='s' && pc.source[3]=='e') { // false
1.216 paf 1165: skip_analized=4;
1166: result=LITERAL_FALSE;
1167: goto break2;
1168: }
1169: break;
1.48 paf 1170: case ' ': case '\t': case '\n':
1.63 paf 1171: if(end!=begin) { // there were a string after previous operator?
1172: result=0; // return that string
1173: goto break2;
1.48 paf 1174: }
1.63 paf 1175: // that's a leading|traling space or after-operator-space
1176: // ignoring it
1177: // reset piece 'begin' position & line
1.206 paf 1178: begin=pc.source; // after whitespace char
1179: begin_pos=pc.pos;
1.48 paf 1180: continue;
1.1 paf 1181: }
1182: break;
1.194 paf 1183: case LS_EXPRESSION_COMMENT:
1184: if(c=='(')
1185: lexical_brackets_nestage++;
1186:
1.206 paf 1187: switch(*pc.source) {
1.194 paf 1188: case '\n': case ')':
1.206 paf 1189: if(*pc.source==')')
1.194 paf 1190: if(--lexical_brackets_nestage!=0)
1191: continue;
1192:
1193: // skip comment
1.206 paf 1194: begin=pc.source;
1195: begin_pos=pc.pos;
1.194 paf 1196:
1.206 paf 1197: pop_LS(pc);
1.194 paf 1198: continue;
1199: }
1200: break;
1.1 paf 1201:
1.10 paf 1202: // VARIABLE GET/PUT/WITH
1.166 parser 1203: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1204: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1205: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1206: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1207: if(
1.206 paf 1208: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1209: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1210: // name in expr ends also before
1.48 paf 1211: switch(c) {
1.181 paf 1212: // expression minus
1.92 paf 1213: case '-':
1.181 paf 1214: // expression integer division
1215: case '\\':
1.206 paf 1216: pop_LS(pc);
1217: pc.ungetc();
1.48 paf 1218: result=EON;
1219: goto break2;
1220: }
1221: }
1.166 parser 1222: if(
1.206 paf 1223: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1224: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1225: // name already has ':', stop before next
1226: switch(c) {
1227: case ':':
1.206 paf 1228: pop_LS(pc);
1229: pc.ungetc();
1.142 parser 1230: result=EON;
1231: goto break2;
1232: }
1233: }
1.48 paf 1234: switch(c) {
1235: case 0:
1236: case ' ': case '\t': case '\n':
1237: case ';':
1.126 paf 1238: case ']': case '}': case ')':
1239: case '"': case '\'':
1.139 parser 1240: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1241: case '+': case '*': case '/': case '%':
1242: case '&': case '|':
1243: case '=': case '!':
1.99 paf 1244: // common delimiters
1.190 paf 1245: case ',': case '?': case '#':
1.220 paf 1246: // mysql column separators
1247: case '`':
1.139 parser 1248: // before call
1249: case '^':
1.206 paf 1250: pop_LS(pc);
1251: pc.ungetc();
1.13 paf 1252: result=EON;
1.1 paf 1253: goto break2;
1.48 paf 1254: case '[':
1.162 parser 1255: // $name.<[>code]
1.206 paf 1256: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1257: end[-1]=='$'/*was start of get*/ ||
1258: end[-1]==':'/*was class name delim */ ||
1259: end[-1]=='.'/*was name delim */
1.162 parser 1260: )) {
1.206 paf 1261: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1262: lexical_brackets_nestage=1;
1263: RC;
1264: }
1.206 paf 1265: pc.ls=LS_VAR_SQUARE;
1.1 paf 1266: lexical_brackets_nestage=1;
1.48 paf 1267: RC;
1268: case '{':
1269: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1270: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1271: } else {
1.206 paf 1272: pc.ls=LS_VAR_CURLY;
1.48 paf 1273: lexical_brackets_nestage=1;
1274: }
1.69 paf 1275:
1.48 paf 1276: RC;
1277: case '(':
1.206 paf 1278: pc.ls=LS_VAR_ROUND;
1.1 paf 1279: lexical_brackets_nestage=1;
1.48 paf 1280: RC;
1281: case '.': // name part delim
1282: case '$': // name part subvar
1.160 parser 1283: case ':': // class<:>name
1.166 parser 1284: // go to _WITHOUT_COLON state variant...
1.206 paf 1285: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1286: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1287: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1288: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1289: // ...stop before next ':'
1.48 paf 1290: RC;
1.1 paf 1291: }
1292: break;
1.48 paf 1293:
1.1 paf 1294: case LS_VAR_NAME_CURLY:
1.48 paf 1295: switch(c) {
1.162 parser 1296: case '[':
1.166 parser 1297: // ${name.<[>code]}
1.206 paf 1298: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1299: lexical_brackets_nestage=1;
1300: RC;
1.48 paf 1301: case '}': // ${name} finished, restoring LS
1.206 paf 1302: pop_LS(pc);
1.48 paf 1303: RC;
1304: case '.': // name part delim
1305: case '$': // name part subvar
1306: case ':': // ':name' or 'class:name'
1307: RC;
1.1 paf 1308: }
1309: break;
1.48 paf 1310:
1311: case LS_VAR_SQUARE:
1312: switch(c) {
1313: case '$':
1.206 paf 1314: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1315: RC;
1316: case '^':
1.206 paf 1317: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1318: RC;
1319: case ']':
1.1 paf 1320: if(--lexical_brackets_nestage==0) {
1.206 paf 1321: pop_LS(pc);
1.48 paf 1322: RC;
1.1 paf 1323: }
1.48 paf 1324: break;
1325: case ';': // operator_or_fmt;value delim
1326: RC;
1327: case '[':
1328: lexical_brackets_nestage++;
1329: break;
1.1 paf 1330: }
1331: break;
1.48 paf 1332:
1.1 paf 1333: case LS_VAR_CURLY:
1.48 paf 1334: switch(c) {
1335: case '$':
1.206 paf 1336: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1337: RC;
1338: case '^':
1.206 paf 1339: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1340: RC;
1341: case '}':
1.1 paf 1342: if(--lexical_brackets_nestage==0) {
1.206 paf 1343: pop_LS(pc);
1.48 paf 1344: RC;
1.1 paf 1345: }
1.48 paf 1346: break;
1347: case '{':
1.1 paf 1348: lexical_brackets_nestage++;
1.48 paf 1349: break;
1350: }
1.1 paf 1351: break;
1352:
1.10 paf 1353: // METHOD CALL
1.1 paf 1354: case LS_METHOD_NAME:
1.48 paf 1355: switch(c) {
1356: case '[':
1.166 parser 1357: // ^name.<[>code].xxx
1.206 paf 1358: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1359: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1360: end[-1]==':'/*was class name delim */ ||
1361: end[-1]=='.'/*was name delim */
1.162 parser 1362: )) {
1.206 paf 1363: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1364: lexical_brackets_nestage=1;
1365: RC;
1366: }
1.206 paf 1367: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1368: lexical_brackets_nestage=1;
1.48 paf 1369: RC;
1370: case '{':
1.206 paf 1371: pc.ls=LS_METHOD_CURLY;
1.1 paf 1372: lexical_brackets_nestage=1;
1.48 paf 1373: RC;
1.69 paf 1374: case '(':
1.206 paf 1375: pc.ls=LS_METHOD_ROUND;
1.69 paf 1376: lexical_brackets_nestage=1;
1377: RC;
1.48 paf 1378: case '.': // name part delim
1379: case '$': // name part subvar
1380: case ':': // ':name' or 'class:name'
1.170 parser 1381: case '^': // ^abc^xxx wrong. bailing out
1382: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1383: case ' ': // ^if ( wrong. bailing out
1.48 paf 1384: RC;
1.1 paf 1385: }
1386: break;
1.48 paf 1387:
1388: case LS_METHOD_SQUARE:
1389: switch(c) {
1390: case '$':
1.206 paf 1391: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1392: RC;
1393: case '^':
1.206 paf 1394: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1395: RC;
1396: case ';': // param delim
1397: RC;
1398: case ']':
1.1 paf 1399: if(--lexical_brackets_nestage==0) {
1.206 paf 1400: pc.ls=LS_METHOD_AFTER;
1.48 paf 1401: RC;
1.1 paf 1402: }
1.48 paf 1403: break;
1404: case '[':
1.1 paf 1405: lexical_brackets_nestage++;
1.48 paf 1406: break;
1407: }
1.1 paf 1408: break;
1.48 paf 1409:
1.1 paf 1410: case LS_METHOD_CURLY:
1.48 paf 1411: switch(c) {
1412: case '$':
1.206 paf 1413: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1414: RC;
1415: case '^':
1.206 paf 1416: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1417: RC;
1418: case ';': // param delim
1.48 paf 1419: RC;
1420: case '}':
1.1 paf 1421: if(--lexical_brackets_nestage==0) {
1.206 paf 1422: pc.ls=LS_METHOD_AFTER;
1.48 paf 1423: RC;
1.1 paf 1424: }
1.48 paf 1425: break;
1426: case '{':
1.1 paf 1427: lexical_brackets_nestage++;
1.48 paf 1428: break;
1429: }
1.209 paf 1430: if(pc.explicit_result && c)
1431: switch(c) {
1432: case '\n': case ' ': case '\t':
1433: begin=pc.source;
1434: begin_pos=pc.pos;
1435: continue; // skip it
1436: default:
1437: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
1438: goto break2;
1439: }
1.1 paf 1440: break;
1.48 paf 1441:
1.1 paf 1442: case LS_METHOD_AFTER:
1.69 paf 1443: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1444: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1445: lexical_brackets_nestage=1;
1.48 paf 1446: RC;
1.1 paf 1447: }
1.69 paf 1448: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1449: pc.ls=LS_METHOD_CURLY;
1.69 paf 1450: lexical_brackets_nestage=1;
1451: RC;
1452: }
1453: if(c=='(') {/* ]( }( )( */
1.206 paf 1454: pc.ls=LS_METHOD_ROUND;
1.1 paf 1455: lexical_brackets_nestage=1;
1.48 paf 1456: RC;
1.1 paf 1457: }
1.206 paf 1458: pop_LS(pc);
1459: pc.ungetc();
1.13 paf 1460: result=EON;
1.1 paf 1461: goto break2;
1462: }
1.9 paf 1463: if(c==0) {
1.1 paf 1464: result=-1;
1465: break;
1466: }
1467: }
1468:
1469: break2:
1.59 paf 1470: if(end!=begin) { // there is last piece?
1471: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1472: // strip last \n
1.10 paf 1473: end--;
1.137 parser 1474: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1475: end--;
1.59 paf 1476: }
1.206 paf 1477: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1478: if(!pc.string_start)
1479: pc.string_start=begin_pos;
1.59 paf 1480: // append it
1.206 paf 1481: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1482: }
1.59 paf 1483: }
1.206 paf 1484: if(!pc.string.is_empty()) { // something accumulated?
1485: // create STRING value: array of OP_VALUE+origin+vstring
1486: *lvalp=VL(
1487: new VString(*new String(pc.string, String::L_CLEAN)),
1488: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1489: // new pieces storage
1.206 paf 1490: pc.string.clear();
1491: pc.string_start.clear();
1.58 paf 1492: // make current result be pending for next call, return STRING for now
1.206 paf 1493: pc.pending_state=result; result=STRING;
1.58 paf 1494: }
1.67 paf 1495: if(skip_analized) {
1.206 paf 1496: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1497: }
1.58 paf 1498: return result;
1.1 paf 1499: }
1500:
1.206 paf 1501: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1502: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1503: return 1;
1.110 paf 1504: }
1.1 paf 1505:
1.110 paf 1506: static void yyprint(FILE *file, int type, YYSTYPE value) {
1507: if(type==STRING)
1.206 paf 1508: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1509: }
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