Annotation of parser3/src/main/compile.y, revision 1.222
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:
1.222 ! misha 8: $Id: compile.y,v 1.221 2007/10/17 13:34:59 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"
1.1 paf 44:
1.206 paf 45: // forwards
46:
47: static int real_yyerror(Parse_control* pc, char* s);
48: static void yyprint(FILE* file, int type, YYSTYPE value);
49: static int yylex(YYSTYPE* lvalp, void* pc);
1.1 paf 50:
1.216 paf 51: static const VBool vfalse(false);
52: static const VBool vtrue(true);
53: static const VVoid vvoid;
54:
1.8 paf 55: // local convinient inplace typecast & var
1.205 paf 56: #undef PC
1.206 paf 57: #define PC (*(Parse_control *)pc)
58: #undef POOL
1.114 paf 59: #define POOL (*PC.pool)
1.107 paf 60: #ifndef DOXYGEN
1.1 paf 61: %}
62:
63: %pure_parser
64:
1.13 paf 65: %token EON
1.4 paf 66: %token STRING
1.1 paf 67: %token BOGUS
1.55 paf 68:
1.58 paf 69: %token BAD_STRING_COMPARISON_OPERATOR
1.114 paf 70: %token BAD_HEX_LITERAL
1.171 parser 71: %token BAD_METHOD_DECL_START
1.193 paf 72: %token BAD_METHOD_PARAMETER_NAME_CHARACTER
1.209 paf 73: %token BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE
1.58 paf 74:
1.59 paf 75: %token LAND "&&"
1.58 paf 76: %token LOR "||"
1.193 paf 77: %token LXOR "!||"
78: %token NXOR "!|"
1.58 paf 79:
80: %token NLE "<="
81: %token NGE ">="
82: %token NEQ "=="
83: %token NNE "!="
1.195 paf 84: %token NSL "<<"
85: %token NSR ">>"
1.58 paf 86:
87: %token SLT "lt"
88: %token SGT "gt"
89: %token SLE "le"
90: %token SGE "ge"
91: %token SEQ "eq"
92: %token SNE "ne"
93:
1.67 paf 94: %token DEF "def"
95: %token IN "in"
96: %token FEXISTS "-f"
1.127 paf 97: %token DEXISTS "-d"
1.95 paf 98: %token IS "is"
1.67 paf 99:
1.216 paf 100: %token LITERAL_TRUE "true"
101: %token LITERAL_FALSE "false"
102:
1.57 paf 103: /* logical */
1.193 paf 104: %left "!||"
1.57 paf 105: %left "||"
106: %left "&&"
1.131 paf 107: %left '<' '>' "<=" ">=" "lt" "gt" "le" "ge"
108: %left "==" "!=" "eq" "ne"
109: %left "is" "def" "in" "-f" "-d"
1.57 paf 110:
111: /* bitwise */
1.193 paf 112: %left "!|"
1.131 paf 113: %left '|'
114: %left '&'
1.202 paf 115: %left "<<" ">>"
1.57 paf 116:
1.56 paf 117: /* numerical */
1.202 paf 118: %left '+' '-'
119: %left '*' '/' '\\' '%'
120: %left NUNARY /* unary - + */
121:
122: /* out-of-group */
123: %left '~' /* bitwise */
124: %left '!' /* logical */
1.1 paf 125:
126: %%
1.195 paf 127: all:
1.10 paf 128: one_big_piece {
1.206 paf 129: Method& method=*new Method(Method::CT_ANY,
1.81 paf 130: 0, 0, /*min, max numbered_params_count*/
1.75 paf 131: 0/*param_names*/, 0/*local_names*/,
132: $1/*parser_code*/, 0/*native_code*/);
1.206 paf 133: PC.cclass->add_method(PC.alias_method(main_method_name), method);
1.10 paf 134: }
135: | methods;
136:
137: methods: method | methods method;
138: one_big_piece: maybe_codes;
139:
1.34 paf 140: method: control_method | code_method;
141:
142: control_method: '@' STRING '\n'
1.132 paf 143: maybe_control_strings {
1.206 paf 144: const String& command=*LA2S(*$2);
1.34 paf 145: YYSTYPE strings_code=$4;
1.206 paf 146: if(strings_code->count()<1*OPERATIONS_PER_OPVALUE) {
1.114 paf 147: strcpy(PC.error, "@");
148: strcat(PC.error, command.cstr());
149: strcat(PC.error, " is empty");
1.37 paf 150: YYERROR;
151: }
1.74 paf 152: if(command==CLASS_NAME) {
1.188 paf 153: if(PC.cclass->base_class()) { // already changed from default?
1.114 paf 154: strcpy(PC.error, "class already have a name '");
155: strncat(PC.error, PC.cclass->name().cstr(), 100);
156: strcat(PC.error, "'");
1.73 paf 157: YYERROR;
158: }
1.206 paf 159: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.73 paf 160: // new class' name
1.206 paf 161: const String& name=*LA2S(*strings_code);
1.73 paf 162: // creating the class
1.206 paf 163: VStateless_class* cclass=new VClass;
164: PC.cclass=cclass;
165: PC.cclass->set_name(name);
1.73 paf 166: // append to request's classes
1.206 paf 167: PC.request.classes().put(name, cclass);
1.73 paf 168: } else {
1.206 paf 169: strcpy(PC.error, "@"CLASS_NAME" must contain only one line with class name (contains more then one)");
1.34 paf 170: YYERROR;
171: }
1.130 paf 172: } else if(command==USE_CONTROL_METHOD_NAME) {
1.206 paf 173: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE)
174: PC.request.use_file(PC.request.main_class, *LA2S(*strings_code, i));
1.130 paf 175: } else if(command==BASE_NAME) {
1.188 paf 176: if(PC.cclass->base_class()) { // already changed from default?
1.130 paf 177: strcpy(PC.error, "class already have a base '");
1.188 paf 178: strncat(PC.error, PC.cclass->base_class()->name().cstr(), 100);
1.130 paf 179: strcat(PC.error, "'");
180: YYERROR;
181: }
1.206 paf 182: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
183: const String& base_name=*LA2S(*strings_code);
184: if(Value* base_class_value=PC.request.classes().get(base_name)) {
185: // @CLASS == @BASE sanity check
186: if(VStateless_class *base_class=base_class_value->get_class()) {
187: if(PC.cclass==base_class) {
188: strcpy(PC.error, "@"CLASS_NAME" equals @"BASE_NAME);
189: YYERROR;
190: }
191: PC.cclass->get_class()->set_base(base_class);
192: } else { // they asked to derive from a class without methods ['env' & co]
193: strcpy(PC.error, base_name.cstr());
194: strcat(PC.error, ": you can not derive from this class in @"BASE_NAME);
195: YYERROR;
196: }
197: } else {
1.130 paf 198: strcpy(PC.error, base_name.cstr());
199: strcat(PC.error, ": undefined class in @"BASE_NAME);
1.73 paf 200: YYERROR;
201: }
1.34 paf 202: } else {
1.130 paf 203: strcpy(PC.error, "@"BASE_NAME" must contain sole name");
1.34 paf 204: YYERROR;
205: }
1.130 paf 206: } else {
207: strcpy(PC.error, "'");
208: strncat(PC.error, command.cstr(), MAX_STRING/2);
209: strcat(PC.error, "' invalid special name. valid names are "
210: "'"CLASS_NAME"', '"USE_CONTROL_METHOD_NAME"' and '"BASE_NAME"'");
211: YYERROR;
1.34 paf 212: }
213: };
1.132 paf 214: maybe_control_strings: empty | control_strings;
1.206 paf 215: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2) };
1.37 paf 216: control_string: maybe_string '\n';
217: maybe_string: empty | STRING;
1.34 paf 218:
1.222 ! misha 219: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n' {
1.208 paf 220: PC.explicit_result=false;
1.10 paf 221:
222: YYSTYPE params_names_code=$3;
1.206 paf 223: ArrayString* params_names=0;
224: if(int size=params_names_code->count()) {
225: params_names=new ArrayString;
226: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
227: *params_names+=LA2S(*params_names_code, i);
1.75 paf 228: }
1.10 paf 229:
230: YYSTYPE locals_names_code=$4;
1.206 paf 231: ArrayString* locals_names=0;
232: if(int size=locals_names_code->count()) {
233: locals_names=new ArrayString;
1.208 paf 234: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE) {
235: const String* local_name=LA2S(*locals_names_code, i);
236: if(*local_name==RESULT_VAR_NAME)
237: PC.explicit_result=true;
238: else
239: *locals_names+=local_name;
240: }
1.75 paf 241: }
1.10 paf 242:
1.208 paf 243: Method* method=new Method(
1.206 paf 244: //name,
1.122 paf 245: Method::CT_ANY,
1.81 paf 246: 0, 0/*min,max numbered_params_count*/,
1.76 paf 247: params_names, locals_names,
1.222 ! misha 248: 0/*to be filled later in next {} */, 0);
1.221 misha 249:
1.208 paf 250: *reinterpret_cast<Method**>(&$$)=method;
251:
252: // todo: check [][;result;]
1.222 ! misha 253: } maybe_codes {
! 254: Method& method=*reinterpret_cast<Method*>($7);
! 255: // fill in the code
! 256: method.parser_code=$8;
! 257: // register in class
! 258: const String& name=*LA2S(*$2);
! 259: PC.cclass->add_method(PC.alias_method(name), method);
1.8 paf 260: };
1.10 paf 261:
262: maybe_bracketed_strings: empty | bracketed_maybe_strings;
263: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
264: maybe_strings: empty | strings;
1.206 paf 265: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3) };
1.10 paf 266:
267: maybe_comment: empty | STRING;
1.1 paf 268:
269: /* codes */
270:
1.10 paf 271: maybe_codes: empty | codes;
272:
1.206 paf 273: codes: code | codes code { $$=$1; P(*$$, *$2) };
1.81 paf 274: code: write_string | action;
1.209 paf 275: action: get | put | call;
1.1 paf 276:
277: /* get */
278:
1.64 paf 279: get: get_value {
1.184 paf 280: $$=$1; /* stack: resulting value */
1.206 paf 281: changetail_or_append(*$$,
1.186 paf 282: OP_GET_ELEMENT, false, /*->*/OP_GET_ELEMENT__WRITE,
283: /*or */OP_WRITE_VALUE
1.184 paf 284: ); /* value=pop; wcontext.write(value) */
1.1 paf 285: };
1.163 parser 286: get_value: '$' get_name_value { $$=$2 };
1.64 paf 287: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 288: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 289: name_without_curly_rdive:
290: name_without_curly_rdive_read
291: | name_without_curly_rdive_class;
1.19 paf 292: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 293: $$=N();
294: ArrayOperation* diving_code=$1;
295: const String* first_name=LA2S(*diving_code);
1.179 paf 296: // self.xxx... -> xxx...
1.206 paf 297: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 298: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.206 paf 299: O(*yyval, OP_WITH_SELF); /* stack: starting context */
300: P(*yyval, *diving_code,
1.22 paf 301: /* skip over... */
1.206 paf 302: diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.22 paf 303: } else {
1.206 paf 304: O(*yyval, OP_WITH_READ); /* stack: starting context */
1.179 paf 305:
1.201 paf 306: // ^if ELEMENT -> ^if ELEMENT_OR_OPERATOR
1.206 paf 307: // OP_VALUE+origin+string+OP_GET_ELEMENT. -> OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
308: if(PC.in_call_value && diving_code->count()==4)
309: diving_code->put(4-1, OP_GET_ELEMENT_OR_OPERATOR);
310: P(*$$, *diving_code);
1.22 paf 311: }
312: /* diving code; stack: current context */
1.1 paf 313: };
1.206 paf 314: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2) };
315: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2) };
1.1 paf 316:
317: /* put */
318:
1.81 paf 319: put: '$' name_expr_wdive construct {
1.20 paf 320: $$=$2; /* stack: context,name */
1.206 paf 321: P(*$$, *$3); /* stack: context,name,constructor_value */
1.20 paf 322: };
1.44 paf 323: name_expr_wdive:
1.157 parser 324: name_expr_wdive_root
325: | name_expr_wdive_write
1.44 paf 326: | name_expr_wdive_class;
1.157 parser 327: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 328: $$=N();
329: ArrayOperation* diving_code=$1;
330: const String* first_name=LA2S(*diving_code);
1.179 paf 331: // $self.xxx... -> $xxx...
1.206 paf 332: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 333: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.206 paf 334: O(*$$, OP_WITH_SELF); /* stack: starting context */
335: P(*$$, *diving_code,
1.23 paf 336: /* skip over... */
1.206 paf 337: diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.23 paf 338: } else {
1.206 paf 339: O(*$$, OP_WITH_ROOT); /* stack: starting context */
340: P(*$$, *diving_code);
1.23 paf 341: }
342: /* diving code; stack: current context */
1.156 parser 343: };
1.157 parser 344: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 345: $$=N();
346: O(*$$, OP_WITH_WRITE); /* stack: starting context */
347: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 348: };
1.206 paf 349: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2) };
1.20 paf 350:
1.149 parser 351: construct:
1.163 parser 352: construct_square
353: | construct_round
354: | construct_curly
1.149 parser 355: ;
1.211 paf 356: construct_square: '[' {
357: // allow $result_or_other_variable[ letters here any time ]
358: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
359: } any_constructor_code_value {
1.213 paf 360: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.211 paf 361: } ']' {
1.149 parser 362: // stack: context, name
1.211 paf 363: $$=$3; // stack: context, name, value
1.206 paf 364: O(*$$, OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 365: }
366: ;
1.149 parser 367: construct_round: '(' expr_value ')' {
1.206 paf 368: $$=N();
369: O(*$$, OP_PREPARE_TO_EXPRESSION);
1.149 parser 370: // stack: context, name
1.206 paf 371: P(*$$, *$2); // stack: context, name, value
372: O(*$$, OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 373: }
1.52 paf 374: ;
1.149 parser 375: construct_curly: '{' maybe_codes '}' {
376: // stack: context, name
1.206 paf 377: $$=N();
378: OA(*$$, OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 379: };
380:
1.55 paf 381: any_constructor_code_value:
1.157 parser 382: void_value /* optimized $var[] case */
1.52 paf 383: | STRING /* optimized $var[STRING] case */
1.55 paf 384: | constructor_code_value /* $var[something complex] */
1.1 paf 385: ;
1.55 paf 386: constructor_code_value: constructor_code {
1.206 paf 387: $$=N();
388: OA(*$$, OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 389: /* some code that writes to that context */
390: /* context=pop; stack: context.value() */
1.1 paf 391: };
1.55 paf 392: constructor_code: codes__excluding_sole_str_literal;
1.206 paf 393: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 394:
1.1 paf 395: /* call */
396:
1.66 paf 397: call: call_value {
398: $$=$1; /* stack: value */
1.206 paf 399: changetail_or_append(*$$,
1.186 paf 400: OP_CALL, true, /*->*/ OP_CALL__WRITE,
401: /*or */OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.66 paf 402: };
1.177 paf 403: call_value: '^' {
1.180 paf 404: PC.in_call_value=true;
1.177 paf 405: }
406: call_name {
1.180 paf 407: PC.in_call_value=false;
1.177 paf 408: }
1.154 parser 409: store_params EON { /* ^field.$method{vasya} */
410: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 411:
1.154 parser 412: YYSTYPE params_code=$5;
1.206 paf 413: if(params_code->count()==4) { // probably [] case. [OP_VALUE+origin+Void+STORE_PARAM]
414: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.219 paf 415: if(value->is_void()) // value is VVoid?
1.123 paf 416: params_code=0; // ^zzz[] case. don't append lone empty param.
1.186 paf 417: }
418: /* stack: context, method_junction */
1.206 paf 419: OA(*$$, OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
1.1 paf 420: };
421:
1.43 paf 422: call_name: name_without_curly_rdive;
1.38 paf 423:
1.206 paf 424: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2) };
1.69 paf 425: store_param:
426: store_square_param
427: | store_round_param
428: | store_curly_param
1.31 paf 429: ;
1.210 paf 430: store_square_param: '[' {
1.211 paf 431: // allow ^call[ letters here any time ]
1.210 paf 432: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
433: } store_code_param_parts {
1.213 paf 434: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.210 paf 435: } ']' {$$=$3};
1.69 paf 436: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 437: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 438: store_code_param_parts:
439: store_code_param_part
1.206 paf 440: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 441: ;
442: store_expr_param_parts:
443: store_expr_param_part
1.206 paf 444: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 445: ;
1.94 paf 446: store_curly_param_parts:
447: store_curly_param_part
1.206 paf 448: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3) }
1.94 paf 449: ;
1.120 paf 450: store_code_param_part: code_param_value {
1.32 paf 451: $$=$1;
1.206 paf 452: O(*$$, OP_STORE_PARAM);
1.120 paf 453: };
1.214 paf 454: store_expr_param_part: expr_value {
455: YYSTYPE expr_code=$1;
1.215 paf 456: if(expr_code->count()==3
1.216 paf 457: && (*expr_code)[0].code==OP_VALUE) { // optimizing (double/bool/incidently 'string' too) case. [OP_VALUE+origin+Double]
1.214 paf 458: $$=expr_code;
459: O(*$$, OP_STORE_PARAM); // no evaluating
460: } else {
461: ArrayOperation* code=N();
462: O(*code, OP_PREPARE_TO_EXPRESSION);
463: P(*code, *expr_code);
464: O(*code, OP_WRITE_EXPR_RESULT);
465: $$=N();
466: OA(*$$, OP_EXPR_CODE__STORE_PARAM, code);
467: }
1.69 paf 468: };
1.94 paf 469: store_curly_param_part: maybe_codes {
1.206 paf 470: $$=N();
471: OA(*$$, OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 472: };
1.120 paf 473: code_param_value:
1.157 parser 474: void_value /* optimized [;...] case */
1.120 paf 475: | STRING /* optimized [STRING] case */
476: | constructor_code_value /* [something complex] */
477: ;
1.1 paf 478:
479: /* name */
480:
1.206 paf 481: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 482:
1.206 paf 483: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 484: name_step: name_advance1 '.';
485: name_advance1: name_expr_value {
1.177 paf 486: // we know that name_advance1 not called from ^xxx context
487: // so we'll not check for operator call possibility as we do in name_advance2
488:
1.1 paf 489: /* stack: context */
490: $$=$1; /* stack: context,name */
1.206 paf 491: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 492: };
493: name_advance2: name_expr_value {
494: /* stack: context */
495: $$=$1; /* stack: context,name */
1.206 paf 496: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 497: }
1.4 paf 498: | STRING BOGUS
1.1 paf 499: ;
500: name_expr_value:
1.4 paf 501: STRING /* subname_is_const */
1.1 paf 502: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 503: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 504: | name_square_code_value /* [codes] */
1.1 paf 505: ;
506: name_expr_subvar_value: '$' subvar_ref_name_rdive {
507: $$=$2;
1.206 paf 508: O(*$$, OP_GET_ELEMENT);
1.1 paf 509: };
1.4 paf 510: name_expr_with_subvar_value: STRING subvar_get_writes {
1.206 paf 511: ArrayOperation* code;
1.183 paf 512: {
1.206 paf 513: change_string_literal_to_write_string_literal(*(code=$1));
514: P(*code, *$2);
1.183 paf 515: }
1.206 paf 516: $$=N();
517: OA(*$$, OP_STRING_POOL, code);
1.1 paf 518: };
1.212 paf 519: name_square_code_value: '[' {
520: // allow $result_or_other_variable[ letters here any time ]
521: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
522: } codes {
1.213 paf 523: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.212 paf 524: } ']' {
1.206 paf 525: $$=N();
1.212 paf 526: OA(*$$, OP_OBJECT_POOL, $3); /* stack: empty write context */
1.183 paf 527: /* some code that writes to that context */
528: /* context=pop; stack: context.value() */
1.160 parser 529: };
1.154 parser 530: subvar_ref_name_rdive: STRING {
1.206 paf 531: $$=N();
532: O(*$$, OP_WITH_READ);
533: P(*$$, *$1);
1.1 paf 534: };
1.206 paf 535: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 536: subvar__get_write: '$' subvar_ref_name_rdive {
537: $$=$2;
1.206 paf 538: O(*$$, OP_GET_ELEMENT__WRITE);
1.42 paf 539: };
540:
1.154 parser 541: class_prefix:
542: class_static_prefix
543: | class_constructor_prefix
544: ;
1.155 parser 545: class_static_prefix: STRING ':' {
546: $$=$1; // stack: class name string
1.206 paf 547: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
548: if(VStateless_class* base=PC.cclass->base_class()) {
549: change_string_literal_value(*$$, base->name());
1.189 paf 550: } else {
551: strcpy(PC.error, "no base class declared");
552: YYERROR;
553: }
554: }
1.206 paf 555: O(*$$, OP_GET_CLASS);
1.155 parser 556: };
557: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 558: $$=$1;
1.180 paf 559: if(!PC.in_call_value) {
1.154 parser 560: strcpy(PC.error, ":: not allowed here");
561: YYERROR;
562: }
1.206 paf 563: O(*$$, OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 564: };
565:
1.53 paf 566:
1.56 paf 567: /* expr */
1.53 paf 568:
1.214 paf 569: expr_value: expr;
1.56 paf 570: expr:
1.214 paf 571: double_or_STRING
1.216 paf 572: | true_value
573: | false_value
1.64 paf 574: | get_value
1.66 paf 575: | call_value
1.216 paf 576: | '"' string_inside_quotes_value '"' { $$ = $2 }
577: | '\'' string_inside_quotes_value '\'' { $$ = $2 }
1.60 paf 578: | '(' expr ')' { $$ = $2; }
579: /* stack: operand // stack: @operand */
1.206 paf 580: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP_NEG) }
1.202 paf 581: | '+' expr %prec NUNARY { $$=$2 }
1.206 paf 582: | '~' expr { $$=$2; O(*$$, OP_INV) }
583: | '!' expr { $$=$2; O(*$$, OP_NOT) }
584: | "def" expr { $$=$2; O(*$$, OP_DEF) }
585: | "in" expr { $$=$2; O(*$$, OP_IN) }
586: | "-f" expr { $$=$2; O(*$$, OP_FEXISTS) }
587: | "-d" expr { $$=$2; O(*$$, OP_DEXISTS) }
1.60 paf 588: /* stack: a,b // stack: a@b */
1.206 paf 589: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP_SUB) }
590: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP_ADD) }
591: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MUL) }
592: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP_DIV) }
593: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MOD) }
594: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP_INTDIV) }
595: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SL) }
596: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SR) }
597: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_AND) }
598: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_OR) }
599: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_XOR) }
600: | expr "&&" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_AND) }
601: | expr "||" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_OR) }
602: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP_LOG_XOR) }
603: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LT) }
604: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GT) }
605: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LE) }
606: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GE) }
607: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_EQ) }
608: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_NE) }
609: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LT) }
610: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GT) }
611: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LE) }
612: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GE) }
613: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_EQ) }
614: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_NE) }
615: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP_IS) }
1.56 paf 616: ;
1.214 paf 617:
618: double_or_STRING: STRING {
619: // optimized from OP_STRING->OP_VALUE for doubles
620: maybe_change_string_literal_to_double_literal(*($$=$1));
621: };
1.55 paf 622:
1.65 paf 623: string_inside_quotes_value: maybe_codes {
1.206 paf 624: $$=N();
625: OA(*$$, OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 626: /* some code that writes to that context */
627: /* context=pop; stack: context.get_string() */
1.53 paf 628: };
1.1 paf 629:
1.27 paf 630: /* basics */
1.1 paf 631:
1.81 paf 632: write_string: STRING {
1.209 paf 633: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
634: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 635: };
636:
1.216 paf 637: void_value: /* empty */ { $$=VL(/*we know that we will not change it*/const_cast<VVoid*>(&vvoid), 0, 0, 0) }
638: true_value: "true" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vtrue), 0, 0, 0) }
639: false_value: "false" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vfalse), 0, 0, 0) }
640:
1.206 paf 641: empty: /* empty */ { $$=N() };
1.1 paf 642:
643: %%
1.105 paf 644: #endif
1.1 paf 645:
646: /*
647: 000$111(2222)00
648: 000$111{3333}00
1.9 paf 649: $,^: push,=0
1.1 paf 650: 1:( { break=pop
651: 2:( ) pop
652: 3:{ } pop
653:
654: 000^111(2222)4444{33333}4000
1.9 paf 655: $,^: push,=0
1.1 paf 656: 1:( { break=pop
657: 2:( )=4
658: 3:{ }=4
659: 4:[^({]=pop
660: */
661:
1.206 paf 662: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
663: pc.source--;
664: if(pc.pos.col==0) {
665: --pc.pos.line; pc.pos.col=last_line_end_col;
666: } else
667: --pc.pos.col;
668:
669: }
670: static int yylex(YYSTYPE *lvalp, void *apc) {
671: register Parse_control& pc=*static_cast<Parse_control*>(apc);
672:
673: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 674: #define RC {result=c; goto break2; }
1.1 paf 675:
1.206 paf 676: register int c;
677: int result;
1.1 paf 678:
1.206 paf 679: if(pc.pending_state) {
680: result=pc.pending_state;
681: pc.pending_state=0;
1.1 paf 682: return result;
683: }
684:
1.206 paf 685: const char *begin=pc.source;
686: Pos begin_pos=pc.pos;
1.91 paf 687: const char *end;
1.67 paf 688: int skip_analized=0;
1.50 paf 689: while(true) {
1.206 paf 690: c=*(end=(pc.source++));
691: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 692:
1.208 paf 693: if(c=='\n')
1.206 paf 694: pc.pos_next_line();
1.208 paf 695: else
1.206 paf 696: pc.pos_next_c(c);
1.208 paf 697: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 698:
1.208 paf 699: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 700: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 701: // @SPECIAL
702: // ...
703: // @<here =
1.206 paf 704: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 705: } // continuing checks
1.206 paf 706: if(pc.ls==LS_USER) {
707: push_LS(pc, LS_DEF_NAME);
1.171 parser 708: RC;
1.175 paf 709: } else // @ in first column inside some code [when could that be?]
1.171 parser 710: result=BAD_METHOD_DECL_START;
711: goto break2;
1.209 paf 712: }
713: if(c=='^') {
1.206 paf 714: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 715: // handle after-method situation
1.206 paf 716: pop_LS(pc);
1.203 paf 717: result=EON;
718: skip_analized=-1; // return to punctuation afterwards to assure it's literality
719: goto break2;
720: }
1.206 paf 721: switch(pc.ls) {
1.169 parser 722: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
723: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
724: case LS_VAR_NAME_SIMPLE_WITH_COLON:
725: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
726: case LS_VAR_NAME_CURLY:
727: case LS_METHOD_NAME:
1.194 paf 728: case LS_USER_COMMENT:
1.169 parser 729: case LS_DEF_COMMENT:
730: // no literals in names, please
731: break;
732: default:
1.206 paf 733: switch(*pc.source) {
1.165 parser 734: // ^escaping some punctuators
1.48 paf 735: case '^': case '$': case ';':
1.126 paf 736: case '(': case ')':
1.48 paf 737: case '[': case ']':
738: case '{': case '}':
1.172 parser 739: case '"': case ':':
1.40 paf 740: if(end!=begin) {
1.206 paf 741: if(!pc.string_start)
742: pc.string_start=begin_pos;
1.40 paf 743: // append piece till ^
1.206 paf 744: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 745: }
1.63 paf 746: // reset piece 'begin' position & line
1.206 paf 747: begin=pc.source; // ->punctuation
748: begin_pos=pc.pos;
1.203 paf 749: // skip over _ after ^
1.206 paf 750: pc.source++; pc.pos.col++;
1.203 paf 751: // skip analysis = forced literal
752: continue;
1.114 paf 753:
754: // converting ^#HH into char(hex(HH))
755: case '#':
756: if(end!=begin) {
1.206 paf 757: if(!pc.string_start)
758: pc.string_start=begin_pos;
1.114 paf 759: // append piece till ^
1.206 paf 760: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 761: }
762: // #HH ?
1.206 paf 763: if(pc.source[0]=='#' && pc.source[1] && pc.source[2]) {
1.218 paf 764: char c=(char)(
1.206 paf 765: hex_value[(unsigned char)pc.source[1]]*0x10+
1.218 paf 766: hex_value[(unsigned char)pc.source[2]]);
1.206 paf 767: if(c==0) {
1.114 paf 768: result=BAD_HEX_LITERAL;
769: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
770: }
771: // append char(hex(HH))
1.206 paf 772: pc.string.append(c);
1.114 paf 773: // skip over ^#HH
1.206 paf 774: pc.source+=3;
775: pc.pos.col+=3;
1.114 paf 776: // reset piece 'begin' position & line
1.206 paf 777: begin=pc.source; // ->after ^#HH
778: begin_pos=pc.pos;
1.203 paf 779: // skip analysis = forced literal
1.114 paf 780: continue;
781: }
782: break;
1.1 paf 783: }
1.169 parser 784: break;
1.203 paf 785: }
1.169 parser 786: }
1.113 paf 787: // #comment start skipping
1.206 paf 788: if(c=='#' && pc.pos.col==1) {
1.112 paf 789: if(end!=begin) {
1.206 paf 790: if(!pc.string_start)
791: pc.string_start=begin_pos;
1.112 paf 792: // append piece till #
1.206 paf 793: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 794: }
795: // fall into COMMENT lexical state [wait for \n]
1.206 paf 796: push_LS(pc, LS_USER_COMMENT);
1.175 paf 797: continue;
1.112 paf 798: }
1.206 paf 799: switch(pc.ls) {
1.10 paf 800:
801: // USER'S = NOT OURS
1.1 paf 802: case LS_USER:
1.206 paf 803: case LS_NAME_SQUARE_PART: // name.[here].xxx
804: if(pc.trim_bof)
1.153 parser 805: switch(c) {
806: case '\n': case ' ': case '\t':
1.206 paf 807: begin=pc.source;
808: begin_pos=pc.pos;
1.152 parser 809: continue; // skip it
1.153 parser 810: default:
1.206 paf 811: pc.trim_bof=false;
1.152 parser 812: }
1.48 paf 813: switch(c) {
814: case '$':
1.206 paf 815: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 816: RC;
817: case '^':
1.206 paf 818: push_LS(pc, LS_METHOD_NAME);
1.48 paf 819: RC;
1.166 parser 820: case ']':
1.206 paf 821: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 822: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 823: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 824: RC;
825: }
1.160 parser 826: break;
1.166 parser 827: case '[': // $name.[co<[>de]
1.206 paf 828: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 829: lexical_brackets_nestage++;
1.161 parser 830: break;
1.112 paf 831: }
1.209 paf 832: if(pc.explicit_result && c)
833: switch(c) {
834: case '\n': case ' ': case '\t':
835: begin=pc.source;
836: begin_pos=pc.pos;
837: continue; // skip it
838: default:
839: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
840: goto break2;
841: }
1.112 paf 842: break;
843:
844: // #COMMENT
1.194 paf 845: case LS_USER_COMMENT:
1.112 paf 846: if(c=='\n') {
847: // skip comment
1.206 paf 848: begin=pc.source;
849: begin_pos=pc.pos;
1.112 paf 850:
1.206 paf 851: pop_LS(pc);
1.112 paf 852: continue;
1.1 paf 853: }
1.48 paf 854: break;
855:
856: // STRING IN EXPRESSION
1.145 parser 857: case LS_EXPRESSION_STRING_QUOTED:
858: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 859: switch(c) {
860: case '"':
1.145 parser 861: case '\'':
862: if(
1.206 paf 863: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
864: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
865: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 866: RC;
867: }
868: break;
1.48 paf 869: case '$':
1.206 paf 870: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 871: RC;
872: case '^':
1.206 paf 873: push_LS(pc, LS_METHOD_NAME);
1.48 paf 874: RC;
1.10 paf 875: }
876: break;
877:
878: // METHOD DEFINITION
879: case LS_DEF_NAME:
1.48 paf 880: switch(c) {
881: case '[':
1.206 paf 882: pc.ls=LS_DEF_PARAMS;
1.48 paf 883: RC;
884: case '\n':
1.206 paf 885: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 886: RC;
1.10 paf 887: }
888: break;
1.48 paf 889:
1.10 paf 890: case LS_DEF_PARAMS:
1.48 paf 891: switch(c) {
1.192 paf 892: case '$': // common error
1.193 paf 893: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
894: goto break2;
1.48 paf 895: case ';':
896: RC;
897: case ']':
1.206 paf 898: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 899: RC;
1.49 paf 900: case '\n': // wrong. bailing out
1.206 paf 901: pop_LS(pc);
1.48 paf 902: RC;
1.10 paf 903: }
904: break;
1.48 paf 905:
1.10 paf 906: case LS_DEF_LOCALS:
1.48 paf 907: switch(c) {
908: case '[':
909: case ';':
910: RC;
911: case ']':
1.206 paf 912: pc.ls=LS_DEF_COMMENT;
1.48 paf 913: RC;
914: case '\n': // wrong. bailing out
1.206 paf 915: pop_LS(pc);
1.48 paf 916: RC;
1.10 paf 917: }
918: break;
1.48 paf 919:
1.10 paf 920: case LS_DEF_COMMENT:
921: if(c=='\n') {
1.206 paf 922: pop_LS(pc);
1.48 paf 923: RC;
1.37 paf 924: }
925: break;
926:
1.48 paf 927: case LS_DEF_SPECIAL_BODY:
1.175 paf 928: if(c=='\n')
1.48 paf 929: RC;
930: break;
931:
932: // (EXPRESSION)
1.69 paf 933: case LS_VAR_ROUND:
934: case LS_METHOD_ROUND:
1.48 paf 935: switch(c) {
936: case ')':
937: if(--lexical_brackets_nestage==0)
1.206 paf 938: if(pc.ls==LS_METHOD_ROUND) // method round param ended
939: pc.ls=LS_METHOD_AFTER; // look for method end
940: else // pc.ls==LS_VAR_ROUND // variable constructor ended
941: pop_LS(pc); // return to normal life
1.48 paf 942: RC;
1.194 paf 943: case '#': // comment start skipping
944: if(end!=begin) {
1.206 paf 945: if(!pc.string_start)
946: pc.string_start=begin_pos;
1.194 paf 947: // append piece till #
1.206 paf 948: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 949: }
950: // fall into COMMENT lexical state [wait for \n]
1.206 paf 951: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 952: lexical_brackets_nestage=1;
953: continue;
1.48 paf 954: case '$':
1.206 paf 955: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 956: RC;
957: case '^':
1.206 paf 958: push_LS(pc, LS_METHOD_NAME);
1.48 paf 959: RC;
960: case '(':
961: lexical_brackets_nestage++;
962: RC;
1.67 paf 963: case '-':
1.206 paf 964: switch(*pc.source) {
1.127 paf 965: case 'f': // -f
1.67 paf 966: skip_analized=1;
967: result=FEXISTS;
1.127 paf 968: goto break2;
969: case 'd': // -d
970: skip_analized=1;
971: result=DEXISTS;
972: goto break2;
1.191 paf 973: default: // minus
1.67 paf 974: result=c;
1.127 paf 975: goto break2;
976: }
1.67 paf 977: goto break2;
1.173 paf 978: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 979: case '~':
1.48 paf 980: case ';':
981: RC;
1.193 paf 982: case '&': case '|':
1.206 paf 983: if(*pc.source==c) { // && ||
1.193 paf 984: result=c=='&'?LAND:LOR;
1.67 paf 985: skip_analized=1;
1.58 paf 986: } else
987: result=c;
988: goto break2;
1.193 paf 989: case '!':
1.206 paf 990: switch(pc.source[0]) {
1.193 paf 991: case '|': // !| !||
992: skip_analized=1;
1.206 paf 993: if(pc.source[1]=='|') {
1.193 paf 994: skip_analized++;
995: result=LXOR;
996: } else
997: result=NXOR;
998: goto break2;
999: case '=': // !=
1000: skip_analized=1;
1001: result=NNE;
1002: goto break2;
1003: }
1004: RC;
1.195 paf 1005:
1006: case '<': // <<, <=, <
1.206 paf 1007: switch(*pc.source) {
1.195 paf 1008: case '<': // <[<]
1009: skip_analized=1; result=NSL; break;
1010: case '=': // <[=]
1011: skip_analized=1; result=NLE; break;
1012: default: // <[]
1013: result=c; break;
1014: }
1015: goto break2;
1016: case '>': // >>, >=, >
1.206 paf 1017: switch(*pc.source) {
1.195 paf 1018: case '>': // >[>]
1019: skip_analized=1; result=NSR; break;
1020: case '=': // >[=]
1021: skip_analized=1; result=NGE; break;
1022: default: // >[]
1023: result=c; break;
1024: }
1025: goto break2;
1026: case '=': // ==
1.206 paf 1027: switch(*pc.source) {
1.195 paf 1028: case '=': // =[=]
1029: skip_analized=1; result=NEQ; break;
1030: default: // =[]
1031: result=c; break; // not used now
1032: }
1.58 paf 1033: goto break2;
1.195 paf 1034:
1.48 paf 1035: case '"':
1.206 paf 1036: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1037: RC;
1038: case '\'':
1.206 paf 1039: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1040: RC;
1.50 paf 1041: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1042: if(end==begin) // right after whitespace
1.206 paf 1043: if(isspace(pc.source[1])) {
1044: switch(*pc.source) {
1.117 paf 1045: // case '?': // ok [and bad cases, yacc would bark at them]
1046: case 't': // lt gt [et nt]
1047: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1048: skip_analized=1;
1049: goto break2;
1050: case 'e': // le ge ne [ee]
1051: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1052: skip_analized=1;
1053: goto break2;
1054: case 'q': // eq [lq gq nq]
1055: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1056: skip_analized=1;
1057: goto break2;
1058: }
1.67 paf 1059: }
1060: break;
1061: case 'i':
1062: if(end==begin) // right after whitespace
1.206 paf 1063: if(isspace(pc.source[1])) {
1064: switch(pc.source[0]) {
1.117 paf 1065: case 'n': // in
1.95 paf 1066: skip_analized=1;
1067: result=IN;
1068: goto break2;
1.117 paf 1069: case 's': // is
1.95 paf 1070: skip_analized=1;
1071: result=IS;
1072: goto break2;
1073: }
1.67 paf 1074: }
1075: break;
1076: case 'd':
1077: if(end==begin) // right after whitespace
1.206 paf 1078: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.67 paf 1079: skip_analized=2;
1080: result=DEF;
1.58 paf 1081: goto break2;
1.50 paf 1082: }
1.48 paf 1083: break;
1.216 paf 1084: case 't':
1085: if(end==begin) // right after whitespace
1086: if(pc.source[0]=='r' && pc.source[1]=='u' && pc.source[2]=='e') { // def
1087: skip_analized=3;
1088: result=LITERAL_TRUE;
1089: goto break2;
1090: }
1091: break;
1092: case 'f':
1093: if(end==begin) // right after whitespace
1094: if(pc.source[0]=='a' && pc.source[1]=='l' && pc.source[2]=='s' && pc.source[3]=='e') { // def
1095: skip_analized=4;
1096: result=LITERAL_FALSE;
1097: goto break2;
1098: }
1099: break;
1.48 paf 1100: case ' ': case '\t': case '\n':
1.63 paf 1101: if(end!=begin) { // there were a string after previous operator?
1102: result=0; // return that string
1103: goto break2;
1.48 paf 1104: }
1.63 paf 1105: // that's a leading|traling space or after-operator-space
1106: // ignoring it
1107: // reset piece 'begin' position & line
1.206 paf 1108: begin=pc.source; // after whitespace char
1109: begin_pos=pc.pos;
1.48 paf 1110: continue;
1.1 paf 1111: }
1112: break;
1.194 paf 1113: case LS_EXPRESSION_COMMENT:
1114: if(c=='(')
1115: lexical_brackets_nestage++;
1116:
1.206 paf 1117: switch(*pc.source) {
1.194 paf 1118: case '\n': case ')':
1.206 paf 1119: if(*pc.source==')')
1.194 paf 1120: if(--lexical_brackets_nestage!=0)
1121: continue;
1122:
1123: // skip comment
1.206 paf 1124: begin=pc.source;
1125: begin_pos=pc.pos;
1.194 paf 1126:
1.206 paf 1127: pop_LS(pc);
1.194 paf 1128: continue;
1129: }
1130: break;
1.1 paf 1131:
1.10 paf 1132: // VARIABLE GET/PUT/WITH
1.166 parser 1133: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1134: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1135: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1136: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1137: if(
1.206 paf 1138: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1139: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1140: // name in expr ends also before
1.48 paf 1141: switch(c) {
1.181 paf 1142: // expression minus
1.92 paf 1143: case '-':
1.181 paf 1144: // expression integer division
1145: case '\\':
1.206 paf 1146: pop_LS(pc);
1147: pc.ungetc();
1.48 paf 1148: result=EON;
1149: goto break2;
1150: }
1151: }
1.166 parser 1152: if(
1.206 paf 1153: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1154: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1155: // name already has ':', stop before next
1156: switch(c) {
1157: case ':':
1.206 paf 1158: pop_LS(pc);
1159: pc.ungetc();
1.142 parser 1160: result=EON;
1161: goto break2;
1162: }
1163: }
1.48 paf 1164: switch(c) {
1165: case 0:
1166: case ' ': case '\t': case '\n':
1167: case ';':
1.126 paf 1168: case ']': case '}': case ')':
1169: case '"': case '\'':
1.139 parser 1170: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1171: case '+': case '*': case '/': case '%':
1172: case '&': case '|':
1173: case '=': case '!':
1.99 paf 1174: // common delimiters
1.190 paf 1175: case ',': case '?': case '#':
1.220 paf 1176: // mysql column separators
1177: case '`':
1.139 parser 1178: // before call
1179: case '^':
1.206 paf 1180: pop_LS(pc);
1181: pc.ungetc();
1.13 paf 1182: result=EON;
1.1 paf 1183: goto break2;
1.48 paf 1184: case '[':
1.162 parser 1185: // $name.<[>code]
1.206 paf 1186: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1187: end[-1]=='$'/*was start of get*/ ||
1188: end[-1]==':'/*was class name delim */ ||
1189: end[-1]=='.'/*was name delim */
1.162 parser 1190: )) {
1.206 paf 1191: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1192: lexical_brackets_nestage=1;
1193: RC;
1194: }
1.206 paf 1195: pc.ls=LS_VAR_SQUARE;
1.1 paf 1196: lexical_brackets_nestage=1;
1.48 paf 1197: RC;
1198: case '{':
1199: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1200: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1201: } else {
1.206 paf 1202: pc.ls=LS_VAR_CURLY;
1.48 paf 1203: lexical_brackets_nestage=1;
1204: }
1.69 paf 1205:
1.48 paf 1206: RC;
1207: case '(':
1.206 paf 1208: pc.ls=LS_VAR_ROUND;
1.1 paf 1209: lexical_brackets_nestage=1;
1.48 paf 1210: RC;
1211: case '.': // name part delim
1212: case '$': // name part subvar
1.160 parser 1213: case ':': // class<:>name
1.166 parser 1214: // go to _WITHOUT_COLON state variant...
1.206 paf 1215: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1216: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1217: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1218: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1219: // ...stop before next ':'
1.48 paf 1220: RC;
1.1 paf 1221: }
1222: break;
1.48 paf 1223:
1.1 paf 1224: case LS_VAR_NAME_CURLY:
1.48 paf 1225: switch(c) {
1.162 parser 1226: case '[':
1.166 parser 1227: // ${name.<[>code]}
1.206 paf 1228: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1229: lexical_brackets_nestage=1;
1230: RC;
1.48 paf 1231: case '}': // ${name} finished, restoring LS
1.206 paf 1232: pop_LS(pc);
1.48 paf 1233: RC;
1234: case '.': // name part delim
1235: case '$': // name part subvar
1236: case ':': // ':name' or 'class:name'
1237: RC;
1.1 paf 1238: }
1239: break;
1.48 paf 1240:
1241: case LS_VAR_SQUARE:
1242: switch(c) {
1243: case '$':
1.206 paf 1244: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1245: RC;
1246: case '^':
1.206 paf 1247: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1248: RC;
1249: case ']':
1.1 paf 1250: if(--lexical_brackets_nestage==0) {
1.206 paf 1251: pop_LS(pc);
1.48 paf 1252: RC;
1.1 paf 1253: }
1.48 paf 1254: break;
1255: case ';': // operator_or_fmt;value delim
1256: RC;
1257: case '[':
1258: lexical_brackets_nestage++;
1259: break;
1.1 paf 1260: }
1261: break;
1.48 paf 1262:
1.1 paf 1263: case LS_VAR_CURLY:
1.48 paf 1264: switch(c) {
1265: case '$':
1.206 paf 1266: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1267: RC;
1268: case '^':
1.206 paf 1269: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1270: RC;
1271: case '}':
1.1 paf 1272: if(--lexical_brackets_nestage==0) {
1.206 paf 1273: pop_LS(pc);
1.48 paf 1274: RC;
1.1 paf 1275: }
1.48 paf 1276: break;
1277: case '{':
1.1 paf 1278: lexical_brackets_nestage++;
1.48 paf 1279: break;
1280: }
1.1 paf 1281: break;
1282:
1.10 paf 1283: // METHOD CALL
1.1 paf 1284: case LS_METHOD_NAME:
1.48 paf 1285: switch(c) {
1286: case '[':
1.166 parser 1287: // ^name.<[>code].xxx
1.206 paf 1288: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1289: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1290: end[-1]==':'/*was class name delim */ ||
1291: end[-1]=='.'/*was name delim */
1.162 parser 1292: )) {
1.206 paf 1293: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1294: lexical_brackets_nestage=1;
1295: RC;
1296: }
1.206 paf 1297: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1298: lexical_brackets_nestage=1;
1.48 paf 1299: RC;
1300: case '{':
1.206 paf 1301: pc.ls=LS_METHOD_CURLY;
1.1 paf 1302: lexical_brackets_nestage=1;
1.48 paf 1303: RC;
1.69 paf 1304: case '(':
1.206 paf 1305: pc.ls=LS_METHOD_ROUND;
1.69 paf 1306: lexical_brackets_nestage=1;
1307: RC;
1.48 paf 1308: case '.': // name part delim
1309: case '$': // name part subvar
1310: case ':': // ':name' or 'class:name'
1.170 parser 1311: case '^': // ^abc^xxx wrong. bailing out
1312: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1313: case ' ': // ^if ( wrong. bailing out
1.48 paf 1314: RC;
1.1 paf 1315: }
1316: break;
1.48 paf 1317:
1318: case LS_METHOD_SQUARE:
1319: switch(c) {
1320: case '$':
1.206 paf 1321: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1322: RC;
1323: case '^':
1.206 paf 1324: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1325: RC;
1326: case ';': // param delim
1327: RC;
1328: case ']':
1.1 paf 1329: if(--lexical_brackets_nestage==0) {
1.206 paf 1330: pc.ls=LS_METHOD_AFTER;
1.48 paf 1331: RC;
1.1 paf 1332: }
1.48 paf 1333: break;
1334: case '[':
1.1 paf 1335: lexical_brackets_nestage++;
1.48 paf 1336: break;
1337: }
1.1 paf 1338: break;
1.48 paf 1339:
1.1 paf 1340: case LS_METHOD_CURLY:
1.48 paf 1341: switch(c) {
1342: case '$':
1.206 paf 1343: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1344: RC;
1345: case '^':
1.206 paf 1346: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1347: RC;
1348: case ';': // param delim
1.48 paf 1349: RC;
1350: case '}':
1.1 paf 1351: if(--lexical_brackets_nestage==0) {
1.206 paf 1352: pc.ls=LS_METHOD_AFTER;
1.48 paf 1353: RC;
1.1 paf 1354: }
1.48 paf 1355: break;
1356: case '{':
1.1 paf 1357: lexical_brackets_nestage++;
1.48 paf 1358: break;
1359: }
1.209 paf 1360: if(pc.explicit_result && c)
1361: switch(c) {
1362: case '\n': case ' ': case '\t':
1363: begin=pc.source;
1364: begin_pos=pc.pos;
1365: continue; // skip it
1366: default:
1367: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
1368: goto break2;
1369: }
1.1 paf 1370: break;
1.48 paf 1371:
1.1 paf 1372: case LS_METHOD_AFTER:
1.69 paf 1373: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1374: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1375: lexical_brackets_nestage=1;
1.48 paf 1376: RC;
1.1 paf 1377: }
1.69 paf 1378: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1379: pc.ls=LS_METHOD_CURLY;
1.69 paf 1380: lexical_brackets_nestage=1;
1381: RC;
1382: }
1383: if(c=='(') {/* ]( }( )( */
1.206 paf 1384: pc.ls=LS_METHOD_ROUND;
1.1 paf 1385: lexical_brackets_nestage=1;
1.48 paf 1386: RC;
1.1 paf 1387: }
1.206 paf 1388: pop_LS(pc);
1389: pc.ungetc();
1.13 paf 1390: result=EON;
1.1 paf 1391: goto break2;
1392: }
1.9 paf 1393: if(c==0) {
1.1 paf 1394: result=-1;
1395: break;
1396: }
1397: }
1398:
1399: break2:
1.59 paf 1400: if(end!=begin) { // there is last piece?
1401: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1402: // strip last \n
1.10 paf 1403: end--;
1.137 parser 1404: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1405: end--;
1.59 paf 1406: }
1.206 paf 1407: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1408: if(!pc.string_start)
1409: pc.string_start=begin_pos;
1.59 paf 1410: // append it
1.206 paf 1411: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1412: }
1.59 paf 1413: }
1.206 paf 1414: if(!pc.string.is_empty()) { // something accumulated?
1415: // create STRING value: array of OP_VALUE+origin+vstring
1416: *lvalp=VL(
1417: new VString(*new String(pc.string, String::L_CLEAN)),
1418: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1419: // new pieces storage
1.206 paf 1420: pc.string.clear();
1421: pc.string_start.clear();
1.58 paf 1422: // make current result be pending for next call, return STRING for now
1.206 paf 1423: pc.pending_state=result; result=STRING;
1.58 paf 1424: }
1.67 paf 1425: if(skip_analized) {
1.206 paf 1426: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1427: }
1.58 paf 1428: return result;
1.1 paf 1429: }
1430:
1.206 paf 1431: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1432: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1433: return 1;
1.110 paf 1434: }
1.1 paf 1435:
1.110 paf 1436: static void yyprint(FILE *file, int type, YYSTYPE value) {
1437: if(type==STRING)
1.206 paf 1438: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1439: }
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