Annotation of parser3/src/main/compile.y, revision 1.218
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:
1.218 ! paf 8: $Id: compile.y,v 1.217.2.1 2005/12/08 10:02:44 paf Exp $
1.88 paf 9: */
10:
1.106 paf 11: /**
12: @todo parser4:
13: - cache compiled code from request to request. to do that...
14: -#: make method definitions, @CLASS, @BASE, @USE instructions,
1.88 paf 15: which would be executed afterwards, and actions
16: now performed at compile time would be delayed to run time.
1.106 paf 17: -#: make cache expiration on time and on disk-change of class source
18: -#: in apache use subpools for compiled class storage
19: -#: in iis make up specialized Pool object for that
1.24 paf 20: */
21:
1.206 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:
1.208 paf 219: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n' {
220: PC.explicit_result=false;
1.206 paf 221: const String& name=*LA2S(*$2);
1.10 paf 222:
223: YYSTYPE params_names_code=$3;
1.206 paf 224: ArrayString* params_names=0;
225: if(int size=params_names_code->count()) {
226: params_names=new ArrayString;
227: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
228: *params_names+=LA2S(*params_names_code, i);
1.75 paf 229: }
1.10 paf 230:
231: YYSTYPE locals_names_code=$4;
1.206 paf 232: ArrayString* locals_names=0;
233: if(int size=locals_names_code->count()) {
234: locals_names=new ArrayString;
1.208 paf 235: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE) {
236: const String* local_name=LA2S(*locals_names_code, i);
237: if(*local_name==RESULT_VAR_NAME)
238: PC.explicit_result=true;
239: else
240: *locals_names+=local_name;
241: }
1.75 paf 242: }
1.10 paf 243:
1.208 paf 244: Method* method=new Method(
1.206 paf 245: //name,
1.122 paf 246: Method::CT_ANY,
1.81 paf 247: 0, 0/*min,max numbered_params_count*/,
1.76 paf 248: params_names, locals_names,
1.208 paf 249: 0/*to be filled later in next {} */, 0);
250: PC.cclass->add_method(PC.alias_method(name), *method);
251: *reinterpret_cast<Method**>(&$$)=method;
252:
253: // todo: check [][;result;]
254: } maybe_codes {
255: // fill in the code
256: reinterpret_cast<Method*>($7)->parser_code=$8;
1.8 paf 257: };
1.10 paf 258:
259: maybe_bracketed_strings: empty | bracketed_maybe_strings;
260: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
261: maybe_strings: empty | strings;
1.206 paf 262: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3) };
1.10 paf 263:
264: maybe_comment: empty | STRING;
1.1 paf 265:
266: /* codes */
267:
1.10 paf 268: maybe_codes: empty | codes;
269:
1.206 paf 270: codes: code | codes code { $$=$1; P(*$$, *$2) };
1.81 paf 271: code: write_string | action;
1.209 paf 272: action: get | put | call;
1.1 paf 273:
274: /* get */
275:
1.64 paf 276: get: get_value {
1.184 paf 277: $$=$1; /* stack: resulting value */
1.206 paf 278: changetail_or_append(*$$,
1.186 paf 279: OP_GET_ELEMENT, false, /*->*/OP_GET_ELEMENT__WRITE,
280: /*or */OP_WRITE_VALUE
1.184 paf 281: ); /* value=pop; wcontext.write(value) */
1.1 paf 282: };
1.163 parser 283: get_value: '$' get_name_value { $$=$2 };
1.64 paf 284: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 285: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 286: name_without_curly_rdive:
287: name_without_curly_rdive_read
288: | name_without_curly_rdive_class;
1.19 paf 289: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 290: $$=N();
291: ArrayOperation* diving_code=$1;
292: const String* first_name=LA2S(*diving_code);
1.179 paf 293: // self.xxx... -> xxx...
1.206 paf 294: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 295: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.206 paf 296: O(*yyval, OP_WITH_SELF); /* stack: starting context */
297: P(*yyval, *diving_code,
1.22 paf 298: /* skip over... */
1.206 paf 299: diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.22 paf 300: } else {
1.206 paf 301: O(*yyval, OP_WITH_READ); /* stack: starting context */
1.179 paf 302:
1.201 paf 303: // ^if ELEMENT -> ^if ELEMENT_OR_OPERATOR
1.206 paf 304: // OP_VALUE+origin+string+OP_GET_ELEMENT. -> OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
305: if(PC.in_call_value && diving_code->count()==4)
306: diving_code->put(4-1, OP_GET_ELEMENT_OR_OPERATOR);
307: P(*$$, *diving_code);
1.22 paf 308: }
309: /* diving code; stack: current context */
1.1 paf 310: };
1.206 paf 311: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2) };
312: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2) };
1.1 paf 313:
314: /* put */
315:
1.81 paf 316: put: '$' name_expr_wdive construct {
1.20 paf 317: $$=$2; /* stack: context,name */
1.206 paf 318: P(*$$, *$3); /* stack: context,name,constructor_value */
1.20 paf 319: };
1.44 paf 320: name_expr_wdive:
1.157 parser 321: name_expr_wdive_root
322: | name_expr_wdive_write
1.44 paf 323: | name_expr_wdive_class;
1.157 parser 324: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 325: $$=N();
326: ArrayOperation* diving_code=$1;
327: const String* first_name=LA2S(*diving_code);
1.179 paf 328: // $self.xxx... -> $xxx...
1.206 paf 329: // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 330: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.206 paf 331: O(*$$, OP_WITH_SELF); /* stack: starting context */
332: P(*$$, *diving_code,
1.23 paf 333: /* skip over... */
1.206 paf 334: diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.23 paf 335: } else {
1.206 paf 336: O(*$$, OP_WITH_ROOT); /* stack: starting context */
337: P(*$$, *diving_code);
1.23 paf 338: }
339: /* diving code; stack: current context */
1.156 parser 340: };
1.157 parser 341: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 342: $$=N();
343: O(*$$, OP_WITH_WRITE); /* stack: starting context */
344: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 345: };
1.206 paf 346: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2) };
1.20 paf 347:
1.149 parser 348: construct:
1.163 parser 349: construct_square
350: | construct_round
351: | construct_curly
1.149 parser 352: ;
1.211 paf 353: construct_square: '[' {
354: // allow $result_or_other_variable[ letters here any time ]
355: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
356: } any_constructor_code_value {
1.213 paf 357: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.211 paf 358: } ']' {
1.149 parser 359: // stack: context, name
1.211 paf 360: $$=$3; // stack: context, name, value
1.206 paf 361: O(*$$, OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 362: }
363: ;
1.149 parser 364: construct_round: '(' expr_value ')' {
1.206 paf 365: $$=N();
366: O(*$$, OP_PREPARE_TO_EXPRESSION);
1.149 parser 367: // stack: context, name
1.206 paf 368: P(*$$, *$2); // stack: context, name, value
369: O(*$$, OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 370: }
1.52 paf 371: ;
1.149 parser 372: construct_curly: '{' maybe_codes '}' {
373: // stack: context, name
1.206 paf 374: $$=N();
375: OA(*$$, OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 376: };
377:
1.55 paf 378: any_constructor_code_value:
1.157 parser 379: void_value /* optimized $var[] case */
1.52 paf 380: | STRING /* optimized $var[STRING] case */
1.55 paf 381: | constructor_code_value /* $var[something complex] */
1.1 paf 382: ;
1.55 paf 383: constructor_code_value: constructor_code {
1.206 paf 384: $$=N();
385: OA(*$$, OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 386: /* some code that writes to that context */
387: /* context=pop; stack: context.value() */
1.1 paf 388: };
1.55 paf 389: constructor_code: codes__excluding_sole_str_literal;
1.206 paf 390: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 391:
1.1 paf 392: /* call */
393:
1.66 paf 394: call: call_value {
395: $$=$1; /* stack: value */
1.206 paf 396: changetail_or_append(*$$,
1.186 paf 397: OP_CALL, true, /*->*/ OP_CALL__WRITE,
398: /*or */OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.66 paf 399: };
1.177 paf 400: call_value: '^' {
1.180 paf 401: PC.in_call_value=true;
1.177 paf 402: }
403: call_name {
1.180 paf 404: PC.in_call_value=false;
1.177 paf 405: }
1.154 parser 406: store_params EON { /* ^field.$method{vasya} */
407: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 408:
1.154 parser 409: YYSTYPE params_code=$5;
1.206 paf 410: if(params_code->count()==4) { // probably [] case. [OP_VALUE+origin+Void+STORE_PARAM]
411: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.140 parser 412: if(!value->is_defined()) // value is VVoid?
1.123 paf 413: params_code=0; // ^zzz[] case. don't append lone empty param.
1.186 paf 414: }
415: /* stack: context, method_junction */
1.206 paf 416: OA(*$$, OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
1.1 paf 417: };
418:
1.43 paf 419: call_name: name_without_curly_rdive;
1.38 paf 420:
1.206 paf 421: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2) };
1.69 paf 422: store_param:
423: store_square_param
424: | store_round_param
425: | store_curly_param
1.31 paf 426: ;
1.210 paf 427: store_square_param: '[' {
1.211 paf 428: // allow ^call[ letters here any time ]
1.210 paf 429: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
430: } store_code_param_parts {
1.213 paf 431: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.210 paf 432: } ']' {$$=$3};
1.69 paf 433: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 434: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 435: store_code_param_parts:
436: store_code_param_part
1.206 paf 437: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 438: ;
439: store_expr_param_parts:
440: store_expr_param_part
1.206 paf 441: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 442: ;
1.94 paf 443: store_curly_param_parts:
444: store_curly_param_part
1.206 paf 445: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3) }
1.94 paf 446: ;
1.120 paf 447: store_code_param_part: code_param_value {
1.32 paf 448: $$=$1;
1.206 paf 449: O(*$$, OP_STORE_PARAM);
1.120 paf 450: };
1.214 paf 451: store_expr_param_part: expr_value {
452: YYSTYPE expr_code=$1;
1.215 paf 453: if(expr_code->count()==3
1.216 paf 454: && (*expr_code)[0].code==OP_VALUE) { // optimizing (double/bool/incidently 'string' too) case. [OP_VALUE+origin+Double]
1.214 paf 455: $$=expr_code;
456: O(*$$, OP_STORE_PARAM); // no evaluating
457: } else {
458: ArrayOperation* code=N();
459: O(*code, OP_PREPARE_TO_EXPRESSION);
460: P(*code, *expr_code);
461: O(*code, OP_WRITE_EXPR_RESULT);
462: $$=N();
463: OA(*$$, OP_EXPR_CODE__STORE_PARAM, code);
464: }
1.69 paf 465: };
1.94 paf 466: store_curly_param_part: maybe_codes {
1.206 paf 467: $$=N();
468: OA(*$$, OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 469: };
1.120 paf 470: code_param_value:
1.157 parser 471: void_value /* optimized [;...] case */
1.120 paf 472: | STRING /* optimized [STRING] case */
473: | constructor_code_value /* [something complex] */
474: ;
1.1 paf 475:
476: /* name */
477:
1.206 paf 478: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 479:
1.206 paf 480: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 481: name_step: name_advance1 '.';
482: name_advance1: name_expr_value {
1.177 paf 483: // we know that name_advance1 not called from ^xxx context
484: // so we'll not check for operator call possibility as we do in name_advance2
485:
1.1 paf 486: /* stack: context */
487: $$=$1; /* stack: context,name */
1.206 paf 488: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 489: };
490: name_advance2: name_expr_value {
491: /* stack: context */
492: $$=$1; /* stack: context,name */
1.206 paf 493: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 494: }
1.4 paf 495: | STRING BOGUS
1.1 paf 496: ;
497: name_expr_value:
1.4 paf 498: STRING /* subname_is_const */
1.1 paf 499: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 500: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 501: | name_square_code_value /* [codes] */
1.1 paf 502: ;
503: name_expr_subvar_value: '$' subvar_ref_name_rdive {
504: $$=$2;
1.206 paf 505: O(*$$, OP_GET_ELEMENT);
1.1 paf 506: };
1.4 paf 507: name_expr_with_subvar_value: STRING subvar_get_writes {
1.206 paf 508: ArrayOperation* code;
1.183 paf 509: {
1.206 paf 510: change_string_literal_to_write_string_literal(*(code=$1));
511: P(*code, *$2);
1.183 paf 512: }
1.206 paf 513: $$=N();
514: OA(*$$, OP_STRING_POOL, code);
1.1 paf 515: };
1.212 paf 516: name_square_code_value: '[' {
517: // allow $result_or_other_variable[ letters here any time ]
518: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
519: } codes {
1.213 paf 520: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.212 paf 521: } ']' {
1.206 paf 522: $$=N();
1.212 paf 523: OA(*$$, OP_OBJECT_POOL, $3); /* stack: empty write context */
1.183 paf 524: /* some code that writes to that context */
525: /* context=pop; stack: context.value() */
1.160 parser 526: };
1.154 parser 527: subvar_ref_name_rdive: STRING {
1.206 paf 528: $$=N();
529: O(*$$, OP_WITH_READ);
530: P(*$$, *$1);
1.1 paf 531: };
1.206 paf 532: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 533: subvar__get_write: '$' subvar_ref_name_rdive {
534: $$=$2;
1.206 paf 535: O(*$$, OP_GET_ELEMENT__WRITE);
1.42 paf 536: };
537:
1.154 parser 538: class_prefix:
539: class_static_prefix
540: | class_constructor_prefix
541: ;
1.155 parser 542: class_static_prefix: STRING ':' {
543: $$=$1; // stack: class name string
1.206 paf 544: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
545: if(VStateless_class* base=PC.cclass->base_class()) {
546: change_string_literal_value(*$$, base->name());
1.189 paf 547: } else {
548: strcpy(PC.error, "no base class declared");
549: YYERROR;
550: }
551: }
1.206 paf 552: O(*$$, OP_GET_CLASS);
1.155 parser 553: };
554: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 555: $$=$1;
1.180 paf 556: if(!PC.in_call_value) {
1.154 parser 557: strcpy(PC.error, ":: not allowed here");
558: YYERROR;
559: }
1.206 paf 560: O(*$$, OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 561: };
562:
1.53 paf 563:
1.56 paf 564: /* expr */
1.53 paf 565:
1.214 paf 566: expr_value: expr;
1.56 paf 567: expr:
1.214 paf 568: double_or_STRING
1.216 paf 569: | true_value
570: | false_value
1.64 paf 571: | get_value
1.66 paf 572: | call_value
1.216 paf 573: | '"' string_inside_quotes_value '"' { $$ = $2 }
574: | '\'' string_inside_quotes_value '\'' { $$ = $2 }
1.60 paf 575: | '(' expr ')' { $$ = $2; }
576: /* stack: operand // stack: @operand */
1.206 paf 577: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP_NEG) }
1.202 paf 578: | '+' expr %prec NUNARY { $$=$2 }
1.206 paf 579: | '~' expr { $$=$2; O(*$$, OP_INV) }
580: | '!' expr { $$=$2; O(*$$, OP_NOT) }
581: | "def" expr { $$=$2; O(*$$, OP_DEF) }
582: | "in" expr { $$=$2; O(*$$, OP_IN) }
583: | "-f" expr { $$=$2; O(*$$, OP_FEXISTS) }
584: | "-d" expr { $$=$2; O(*$$, OP_DEXISTS) }
1.60 paf 585: /* stack: a,b // stack: a@b */
1.206 paf 586: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP_SUB) }
587: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP_ADD) }
588: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MUL) }
589: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP_DIV) }
590: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MOD) }
591: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP_INTDIV) }
592: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SL) }
593: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SR) }
594: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_AND) }
595: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_OR) }
596: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_XOR) }
597: | expr "&&" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_AND) }
598: | expr "||" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_OR) }
599: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP_LOG_XOR) }
600: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LT) }
601: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GT) }
602: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LE) }
603: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GE) }
604: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_EQ) }
605: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_NE) }
606: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LT) }
607: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GT) }
608: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LE) }
609: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GE) }
610: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_EQ) }
611: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_NE) }
612: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP_IS) }
1.56 paf 613: ;
1.214 paf 614:
615: double_or_STRING: STRING {
616: // optimized from OP_STRING->OP_VALUE for doubles
617: maybe_change_string_literal_to_double_literal(*($$=$1));
618: };
1.55 paf 619:
1.65 paf 620: string_inside_quotes_value: maybe_codes {
1.206 paf 621: $$=N();
622: OA(*$$, OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 623: /* some code that writes to that context */
624: /* context=pop; stack: context.get_string() */
1.53 paf 625: };
1.1 paf 626:
1.27 paf 627: /* basics */
1.1 paf 628:
1.81 paf 629: write_string: STRING {
1.209 paf 630: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
631: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 632: };
633:
1.216 paf 634: void_value: /* empty */ { $$=VL(/*we know that we will not change it*/const_cast<VVoid*>(&vvoid), 0, 0, 0) }
635: true_value: "true" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vtrue), 0, 0, 0) }
636: false_value: "false" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vfalse), 0, 0, 0) }
637:
1.206 paf 638: empty: /* empty */ { $$=N() };
1.1 paf 639:
640: %%
1.105 paf 641: #endif
1.1 paf 642:
643: /*
644: 000$111(2222)00
645: 000$111{3333}00
1.9 paf 646: $,^: push,=0
1.1 paf 647: 1:( { break=pop
648: 2:( ) pop
649: 3:{ } pop
650:
651: 000^111(2222)4444{33333}4000
1.9 paf 652: $,^: push,=0
1.1 paf 653: 1:( { break=pop
654: 2:( )=4
655: 3:{ }=4
656: 4:[^({]=pop
657: */
658:
1.206 paf 659: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
660: pc.source--;
661: if(pc.pos.col==0) {
662: --pc.pos.line; pc.pos.col=last_line_end_col;
663: } else
664: --pc.pos.col;
665:
666: }
667: static int yylex(YYSTYPE *lvalp, void *apc) {
668: register Parse_control& pc=*static_cast<Parse_control*>(apc);
669:
670: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 671: #define RC {result=c; goto break2; }
1.1 paf 672:
1.206 paf 673: register int c;
674: int result;
1.1 paf 675:
1.206 paf 676: if(pc.pending_state) {
677: result=pc.pending_state;
678: pc.pending_state=0;
1.1 paf 679: return result;
680: }
681:
1.206 paf 682: const char *begin=pc.source;
683: Pos begin_pos=pc.pos;
1.91 paf 684: const char *end;
1.67 paf 685: int skip_analized=0;
1.50 paf 686: while(true) {
1.206 paf 687: c=*(end=(pc.source++));
688: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 689:
1.208 paf 690: if(c=='\n')
1.206 paf 691: pc.pos_next_line();
1.208 paf 692: else
1.206 paf 693: pc.pos_next_c(c);
1.208 paf 694: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 695:
1.208 paf 696: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 697: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 698: // @SPECIAL
699: // ...
700: // @<here =
1.206 paf 701: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 702: } // continuing checks
1.206 paf 703: if(pc.ls==LS_USER) {
704: push_LS(pc, LS_DEF_NAME);
1.171 parser 705: RC;
1.175 paf 706: } else // @ in first column inside some code [when could that be?]
1.171 parser 707: result=BAD_METHOD_DECL_START;
708: goto break2;
1.209 paf 709: }
710: if(c=='^') {
1.206 paf 711: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 712: // handle after-method situation
1.206 paf 713: pop_LS(pc);
1.203 paf 714: result=EON;
715: skip_analized=-1; // return to punctuation afterwards to assure it's literality
716: goto break2;
717: }
1.206 paf 718: switch(pc.ls) {
1.169 parser 719: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
720: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
721: case LS_VAR_NAME_SIMPLE_WITH_COLON:
722: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
723: case LS_VAR_NAME_CURLY:
724: case LS_METHOD_NAME:
1.194 paf 725: case LS_USER_COMMENT:
1.169 parser 726: case LS_DEF_COMMENT:
727: // no literals in names, please
728: break;
729: default:
1.206 paf 730: switch(*pc.source) {
1.165 parser 731: // ^escaping some punctuators
1.48 paf 732: case '^': case '$': case ';':
1.126 paf 733: case '(': case ')':
1.48 paf 734: case '[': case ']':
735: case '{': case '}':
1.172 parser 736: case '"': case ':':
1.40 paf 737: if(end!=begin) {
1.206 paf 738: if(!pc.string_start)
739: pc.string_start=begin_pos;
1.40 paf 740: // append piece till ^
1.206 paf 741: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 742: }
1.63 paf 743: // reset piece 'begin' position & line
1.206 paf 744: begin=pc.source; // ->punctuation
745: begin_pos=pc.pos;
1.203 paf 746: // skip over _ after ^
1.206 paf 747: pc.source++; pc.pos.col++;
1.203 paf 748: // skip analysis = forced literal
749: continue;
1.114 paf 750:
751: // converting ^#HH into char(hex(HH))
752: case '#':
753: if(end!=begin) {
1.206 paf 754: if(!pc.string_start)
755: pc.string_start=begin_pos;
1.114 paf 756: // append piece till ^
1.206 paf 757: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 758: }
759: // #HH ?
1.206 paf 760: if(pc.source[0]=='#' && pc.source[1] && pc.source[2]) {
1.218 ! paf 761: char c=(char)(
1.206 paf 762: hex_value[(unsigned char)pc.source[1]]*0x10+
1.218 ! paf 763: hex_value[(unsigned char)pc.source[2]]);
1.206 paf 764: if(c==0) {
1.114 paf 765: result=BAD_HEX_LITERAL;
766: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
767: }
768: // append char(hex(HH))
1.206 paf 769: pc.string.append(c);
1.114 paf 770: // skip over ^#HH
1.206 paf 771: pc.source+=3;
772: pc.pos.col+=3;
1.114 paf 773: // reset piece 'begin' position & line
1.206 paf 774: begin=pc.source; // ->after ^#HH
775: begin_pos=pc.pos;
1.203 paf 776: // skip analysis = forced literal
1.114 paf 777: continue;
778: }
779: break;
1.1 paf 780: }
1.169 parser 781: break;
1.203 paf 782: }
1.169 parser 783: }
1.113 paf 784: // #comment start skipping
1.206 paf 785: if(c=='#' && pc.pos.col==1) {
1.112 paf 786: if(end!=begin) {
1.206 paf 787: if(!pc.string_start)
788: pc.string_start=begin_pos;
1.112 paf 789: // append piece till #
1.206 paf 790: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 791: }
792: // fall into COMMENT lexical state [wait for \n]
1.206 paf 793: push_LS(pc, LS_USER_COMMENT);
1.175 paf 794: continue;
1.112 paf 795: }
1.206 paf 796: switch(pc.ls) {
1.10 paf 797:
798: // USER'S = NOT OURS
1.1 paf 799: case LS_USER:
1.206 paf 800: case LS_NAME_SQUARE_PART: // name.[here].xxx
801: if(pc.trim_bof)
1.153 parser 802: switch(c) {
803: case '\n': case ' ': case '\t':
1.206 paf 804: begin=pc.source;
805: begin_pos=pc.pos;
1.152 parser 806: continue; // skip it
1.153 parser 807: default:
1.206 paf 808: pc.trim_bof=false;
1.152 parser 809: }
1.48 paf 810: switch(c) {
811: case '$':
1.206 paf 812: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 813: RC;
814: case '^':
1.206 paf 815: push_LS(pc, LS_METHOD_NAME);
1.48 paf 816: RC;
1.166 parser 817: case ']':
1.206 paf 818: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 819: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 820: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 821: RC;
822: }
1.160 parser 823: break;
1.166 parser 824: case '[': // $name.[co<[>de]
1.206 paf 825: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 826: lexical_brackets_nestage++;
1.161 parser 827: break;
1.112 paf 828: }
1.209 paf 829: if(pc.explicit_result && c)
830: switch(c) {
831: case '\n': case ' ': case '\t':
832: begin=pc.source;
833: begin_pos=pc.pos;
834: continue; // skip it
835: default:
836: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
837: goto break2;
838: }
1.112 paf 839: break;
840:
841: // #COMMENT
1.194 paf 842: case LS_USER_COMMENT:
1.112 paf 843: if(c=='\n') {
844: // skip comment
1.206 paf 845: begin=pc.source;
846: begin_pos=pc.pos;
1.112 paf 847:
1.206 paf 848: pop_LS(pc);
1.112 paf 849: continue;
1.1 paf 850: }
1.48 paf 851: break;
852:
853: // STRING IN EXPRESSION
1.145 parser 854: case LS_EXPRESSION_STRING_QUOTED:
855: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 856: switch(c) {
857: case '"':
1.145 parser 858: case '\'':
859: if(
1.206 paf 860: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
861: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
862: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 863: RC;
864: }
865: break;
1.48 paf 866: case '$':
1.206 paf 867: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 868: RC;
869: case '^':
1.206 paf 870: push_LS(pc, LS_METHOD_NAME);
1.48 paf 871: RC;
1.10 paf 872: }
873: break;
874:
875: // METHOD DEFINITION
876: case LS_DEF_NAME:
1.48 paf 877: switch(c) {
878: case '[':
1.206 paf 879: pc.ls=LS_DEF_PARAMS;
1.48 paf 880: RC;
881: case '\n':
1.206 paf 882: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 883: RC;
1.10 paf 884: }
885: break;
1.48 paf 886:
1.10 paf 887: case LS_DEF_PARAMS:
1.48 paf 888: switch(c) {
1.192 paf 889: case '$': // common error
1.193 paf 890: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
891: goto break2;
1.48 paf 892: case ';':
893: RC;
894: case ']':
1.206 paf 895: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 896: RC;
1.49 paf 897: case '\n': // wrong. bailing out
1.206 paf 898: pop_LS(pc);
1.48 paf 899: RC;
1.10 paf 900: }
901: break;
1.48 paf 902:
1.10 paf 903: case LS_DEF_LOCALS:
1.48 paf 904: switch(c) {
905: case '[':
906: case ';':
907: RC;
908: case ']':
1.206 paf 909: pc.ls=LS_DEF_COMMENT;
1.48 paf 910: RC;
911: case '\n': // wrong. bailing out
1.206 paf 912: pop_LS(pc);
1.48 paf 913: RC;
1.10 paf 914: }
915: break;
1.48 paf 916:
1.10 paf 917: case LS_DEF_COMMENT:
918: if(c=='\n') {
1.206 paf 919: pop_LS(pc);
1.48 paf 920: RC;
1.37 paf 921: }
922: break;
923:
1.48 paf 924: case LS_DEF_SPECIAL_BODY:
1.175 paf 925: if(c=='\n')
1.48 paf 926: RC;
927: break;
928:
929: // (EXPRESSION)
1.69 paf 930: case LS_VAR_ROUND:
931: case LS_METHOD_ROUND:
1.48 paf 932: switch(c) {
933: case ')':
934: if(--lexical_brackets_nestage==0)
1.206 paf 935: if(pc.ls==LS_METHOD_ROUND) // method round param ended
936: pc.ls=LS_METHOD_AFTER; // look for method end
937: else // pc.ls==LS_VAR_ROUND // variable constructor ended
938: pop_LS(pc); // return to normal life
1.48 paf 939: RC;
1.194 paf 940: case '#': // comment start skipping
941: if(end!=begin) {
1.206 paf 942: if(!pc.string_start)
943: pc.string_start=begin_pos;
1.194 paf 944: // append piece till #
1.206 paf 945: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 946: }
947: // fall into COMMENT lexical state [wait for \n]
1.206 paf 948: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 949: lexical_brackets_nestage=1;
950: continue;
1.48 paf 951: case '$':
1.206 paf 952: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 953: RC;
954: case '^':
1.206 paf 955: push_LS(pc, LS_METHOD_NAME);
1.48 paf 956: RC;
957: case '(':
958: lexical_brackets_nestage++;
959: RC;
1.67 paf 960: case '-':
1.206 paf 961: switch(*pc.source) {
1.127 paf 962: case 'f': // -f
1.67 paf 963: skip_analized=1;
964: result=FEXISTS;
1.127 paf 965: goto break2;
966: case 'd': // -d
967: skip_analized=1;
968: result=DEXISTS;
969: goto break2;
1.191 paf 970: default: // minus
1.67 paf 971: result=c;
1.127 paf 972: goto break2;
973: }
1.67 paf 974: goto break2;
1.173 paf 975: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 976: case '~':
1.48 paf 977: case ';':
978: RC;
1.193 paf 979: case '&': case '|':
1.206 paf 980: if(*pc.source==c) { // && ||
1.193 paf 981: result=c=='&'?LAND:LOR;
1.67 paf 982: skip_analized=1;
1.58 paf 983: } else
984: result=c;
985: goto break2;
1.193 paf 986: case '!':
1.206 paf 987: switch(pc.source[0]) {
1.193 paf 988: case '|': // !| !||
989: skip_analized=1;
1.206 paf 990: if(pc.source[1]=='|') {
1.193 paf 991: skip_analized++;
992: result=LXOR;
993: } else
994: result=NXOR;
995: goto break2;
996: case '=': // !=
997: skip_analized=1;
998: result=NNE;
999: goto break2;
1000: }
1001: RC;
1.195 paf 1002:
1003: case '<': // <<, <=, <
1.206 paf 1004: switch(*pc.source) {
1.195 paf 1005: case '<': // <[<]
1006: skip_analized=1; result=NSL; break;
1007: case '=': // <[=]
1008: skip_analized=1; result=NLE; break;
1009: default: // <[]
1010: result=c; break;
1011: }
1012: goto break2;
1013: case '>': // >>, >=, >
1.206 paf 1014: switch(*pc.source) {
1.195 paf 1015: case '>': // >[>]
1016: skip_analized=1; result=NSR; break;
1017: case '=': // >[=]
1018: skip_analized=1; result=NGE; break;
1019: default: // >[]
1020: result=c; break;
1021: }
1022: goto break2;
1023: case '=': // ==
1.206 paf 1024: switch(*pc.source) {
1.195 paf 1025: case '=': // =[=]
1026: skip_analized=1; result=NEQ; break;
1027: default: // =[]
1028: result=c; break; // not used now
1029: }
1.58 paf 1030: goto break2;
1.195 paf 1031:
1.48 paf 1032: case '"':
1.206 paf 1033: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1034: RC;
1035: case '\'':
1.206 paf 1036: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1037: RC;
1.50 paf 1038: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1039: if(end==begin) // right after whitespace
1.206 paf 1040: if(isspace(pc.source[1])) {
1041: switch(*pc.source) {
1.117 paf 1042: // case '?': // ok [and bad cases, yacc would bark at them]
1043: case 't': // lt gt [et nt]
1044: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1045: skip_analized=1;
1046: goto break2;
1047: case 'e': // le ge ne [ee]
1048: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1049: skip_analized=1;
1050: goto break2;
1051: case 'q': // eq [lq gq nq]
1052: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1053: skip_analized=1;
1054: goto break2;
1055: }
1.67 paf 1056: }
1057: break;
1058: case 'i':
1059: if(end==begin) // right after whitespace
1.206 paf 1060: if(isspace(pc.source[1])) {
1061: switch(pc.source[0]) {
1.117 paf 1062: case 'n': // in
1.95 paf 1063: skip_analized=1;
1064: result=IN;
1065: goto break2;
1.117 paf 1066: case 's': // is
1.95 paf 1067: skip_analized=1;
1068: result=IS;
1069: goto break2;
1070: }
1.67 paf 1071: }
1072: break;
1073: case 'd':
1074: if(end==begin) // right after whitespace
1.206 paf 1075: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.67 paf 1076: skip_analized=2;
1077: result=DEF;
1.58 paf 1078: goto break2;
1.50 paf 1079: }
1.48 paf 1080: break;
1.216 paf 1081: case 't':
1082: if(end==begin) // right after whitespace
1083: if(pc.source[0]=='r' && pc.source[1]=='u' && pc.source[2]=='e') { // def
1084: skip_analized=3;
1085: result=LITERAL_TRUE;
1086: goto break2;
1087: }
1088: break;
1089: case 'f':
1090: if(end==begin) // right after whitespace
1091: if(pc.source[0]=='a' && pc.source[1]=='l' && pc.source[2]=='s' && pc.source[3]=='e') { // def
1092: skip_analized=4;
1093: result=LITERAL_FALSE;
1094: goto break2;
1095: }
1096: break;
1.48 paf 1097: case ' ': case '\t': case '\n':
1.63 paf 1098: if(end!=begin) { // there were a string after previous operator?
1099: result=0; // return that string
1100: goto break2;
1.48 paf 1101: }
1.63 paf 1102: // that's a leading|traling space or after-operator-space
1103: // ignoring it
1104: // reset piece 'begin' position & line
1.206 paf 1105: begin=pc.source; // after whitespace char
1106: begin_pos=pc.pos;
1.48 paf 1107: continue;
1.1 paf 1108: }
1109: break;
1.194 paf 1110: case LS_EXPRESSION_COMMENT:
1111: if(c=='(')
1112: lexical_brackets_nestage++;
1113:
1.206 paf 1114: switch(*pc.source) {
1.194 paf 1115: case '\n': case ')':
1.206 paf 1116: if(*pc.source==')')
1.194 paf 1117: if(--lexical_brackets_nestage!=0)
1118: continue;
1119:
1120: // skip comment
1.206 paf 1121: begin=pc.source;
1122: begin_pos=pc.pos;
1.194 paf 1123:
1.206 paf 1124: pop_LS(pc);
1.194 paf 1125: continue;
1126: }
1127: break;
1.1 paf 1128:
1.10 paf 1129: // VARIABLE GET/PUT/WITH
1.166 parser 1130: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1131: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1132: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1133: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1134: if(
1.206 paf 1135: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1136: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1137: // name in expr ends also before
1.48 paf 1138: switch(c) {
1.181 paf 1139: // expression minus
1.92 paf 1140: case '-':
1.181 paf 1141: // expression integer division
1142: case '\\':
1.206 paf 1143: pop_LS(pc);
1144: pc.ungetc();
1.48 paf 1145: result=EON;
1146: goto break2;
1147: }
1148: }
1.166 parser 1149: if(
1.206 paf 1150: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1151: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1152: // name already has ':', stop before next
1153: switch(c) {
1154: case ':':
1.206 paf 1155: pop_LS(pc);
1156: pc.ungetc();
1.142 parser 1157: result=EON;
1158: goto break2;
1159: }
1160: }
1.48 paf 1161: switch(c) {
1162: case 0:
1163: case ' ': case '\t': case '\n':
1164: case ';':
1.126 paf 1165: case ']': case '}': case ')':
1166: case '"': case '\'':
1.139 parser 1167: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1168: case '+': case '*': case '/': case '%':
1169: case '&': case '|':
1170: case '=': case '!':
1.99 paf 1171: // common delimiters
1.190 paf 1172: case ',': case '?': case '#':
1.139 parser 1173: // before call
1174: case '^':
1.206 paf 1175: pop_LS(pc);
1176: pc.ungetc();
1.13 paf 1177: result=EON;
1.1 paf 1178: goto break2;
1.48 paf 1179: case '[':
1.162 parser 1180: // $name.<[>code]
1.206 paf 1181: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1182: end[-1]=='$'/*was start of get*/ ||
1183: end[-1]==':'/*was class name delim */ ||
1184: end[-1]=='.'/*was name delim */
1.162 parser 1185: )) {
1.206 paf 1186: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1187: lexical_brackets_nestage=1;
1188: RC;
1189: }
1.206 paf 1190: pc.ls=LS_VAR_SQUARE;
1.1 paf 1191: lexical_brackets_nestage=1;
1.48 paf 1192: RC;
1193: case '{':
1194: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1195: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1196: } else {
1.206 paf 1197: pc.ls=LS_VAR_CURLY;
1.48 paf 1198: lexical_brackets_nestage=1;
1199: }
1.69 paf 1200:
1.48 paf 1201: RC;
1202: case '(':
1.206 paf 1203: pc.ls=LS_VAR_ROUND;
1.1 paf 1204: lexical_brackets_nestage=1;
1.48 paf 1205: RC;
1206: case '.': // name part delim
1207: case '$': // name part subvar
1.160 parser 1208: case ':': // class<:>name
1.166 parser 1209: // go to _WITHOUT_COLON state variant...
1.206 paf 1210: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1211: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1212: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1213: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1214: // ...stop before next ':'
1.48 paf 1215: RC;
1.1 paf 1216: }
1217: break;
1.48 paf 1218:
1.1 paf 1219: case LS_VAR_NAME_CURLY:
1.48 paf 1220: switch(c) {
1.162 parser 1221: case '[':
1.166 parser 1222: // ${name.<[>code]}
1.206 paf 1223: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1224: lexical_brackets_nestage=1;
1225: RC;
1.48 paf 1226: case '}': // ${name} finished, restoring LS
1.206 paf 1227: pop_LS(pc);
1.48 paf 1228: RC;
1229: case '.': // name part delim
1230: case '$': // name part subvar
1231: case ':': // ':name' or 'class:name'
1232: RC;
1.1 paf 1233: }
1234: break;
1.48 paf 1235:
1236: case LS_VAR_SQUARE:
1237: switch(c) {
1238: case '$':
1.206 paf 1239: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1240: RC;
1241: case '^':
1.206 paf 1242: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1243: RC;
1244: case ']':
1.1 paf 1245: if(--lexical_brackets_nestage==0) {
1.206 paf 1246: pop_LS(pc);
1.48 paf 1247: RC;
1.1 paf 1248: }
1.48 paf 1249: break;
1250: case ';': // operator_or_fmt;value delim
1251: RC;
1252: case '[':
1253: lexical_brackets_nestage++;
1254: break;
1.1 paf 1255: }
1256: break;
1.48 paf 1257:
1.1 paf 1258: case LS_VAR_CURLY:
1.48 paf 1259: switch(c) {
1260: case '$':
1.206 paf 1261: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1262: RC;
1263: case '^':
1.206 paf 1264: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1265: RC;
1266: case '}':
1.1 paf 1267: if(--lexical_brackets_nestage==0) {
1.206 paf 1268: pop_LS(pc);
1.48 paf 1269: RC;
1.1 paf 1270: }
1.48 paf 1271: break;
1272: case '{':
1.1 paf 1273: lexical_brackets_nestage++;
1.48 paf 1274: break;
1275: }
1.1 paf 1276: break;
1277:
1.10 paf 1278: // METHOD CALL
1.1 paf 1279: case LS_METHOD_NAME:
1.48 paf 1280: switch(c) {
1281: case '[':
1.166 parser 1282: // ^name.<[>code].xxx
1.206 paf 1283: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1284: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1285: end[-1]==':'/*was class name delim */ ||
1286: end[-1]=='.'/*was name delim */
1.162 parser 1287: )) {
1.206 paf 1288: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1289: lexical_brackets_nestage=1;
1290: RC;
1291: }
1.206 paf 1292: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1293: lexical_brackets_nestage=1;
1.48 paf 1294: RC;
1295: case '{':
1.206 paf 1296: pc.ls=LS_METHOD_CURLY;
1.1 paf 1297: lexical_brackets_nestage=1;
1.48 paf 1298: RC;
1.69 paf 1299: case '(':
1.206 paf 1300: pc.ls=LS_METHOD_ROUND;
1.69 paf 1301: lexical_brackets_nestage=1;
1302: RC;
1.48 paf 1303: case '.': // name part delim
1304: case '$': // name part subvar
1305: case ':': // ':name' or 'class:name'
1.170 parser 1306: case '^': // ^abc^xxx wrong. bailing out
1307: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1308: case ' ': // ^if ( wrong. bailing out
1.48 paf 1309: RC;
1.1 paf 1310: }
1311: break;
1.48 paf 1312:
1313: case LS_METHOD_SQUARE:
1314: switch(c) {
1315: case '$':
1.206 paf 1316: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1317: RC;
1318: case '^':
1.206 paf 1319: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1320: RC;
1321: case ';': // param delim
1322: RC;
1323: case ']':
1.1 paf 1324: if(--lexical_brackets_nestage==0) {
1.206 paf 1325: pc.ls=LS_METHOD_AFTER;
1.48 paf 1326: RC;
1.1 paf 1327: }
1.48 paf 1328: break;
1329: case '[':
1.1 paf 1330: lexical_brackets_nestage++;
1.48 paf 1331: break;
1332: }
1.1 paf 1333: break;
1.48 paf 1334:
1.1 paf 1335: case LS_METHOD_CURLY:
1.48 paf 1336: switch(c) {
1337: case '$':
1.206 paf 1338: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1339: RC;
1340: case '^':
1.206 paf 1341: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1342: RC;
1343: case ';': // param delim
1.48 paf 1344: RC;
1345: case '}':
1.1 paf 1346: if(--lexical_brackets_nestage==0) {
1.206 paf 1347: pc.ls=LS_METHOD_AFTER;
1.48 paf 1348: RC;
1.1 paf 1349: }
1.48 paf 1350: break;
1351: case '{':
1.1 paf 1352: lexical_brackets_nestage++;
1.48 paf 1353: break;
1354: }
1.209 paf 1355: if(pc.explicit_result && c)
1356: switch(c) {
1357: case '\n': case ' ': case '\t':
1358: begin=pc.source;
1359: begin_pos=pc.pos;
1360: continue; // skip it
1361: default:
1362: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
1363: goto break2;
1364: }
1.1 paf 1365: break;
1.48 paf 1366:
1.1 paf 1367: case LS_METHOD_AFTER:
1.69 paf 1368: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1369: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1370: lexical_brackets_nestage=1;
1.48 paf 1371: RC;
1.1 paf 1372: }
1.69 paf 1373: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1374: pc.ls=LS_METHOD_CURLY;
1.69 paf 1375: lexical_brackets_nestage=1;
1376: RC;
1377: }
1378: if(c=='(') {/* ]( }( )( */
1.206 paf 1379: pc.ls=LS_METHOD_ROUND;
1.1 paf 1380: lexical_brackets_nestage=1;
1.48 paf 1381: RC;
1.1 paf 1382: }
1.206 paf 1383: pop_LS(pc);
1384: pc.ungetc();
1.13 paf 1385: result=EON;
1.1 paf 1386: goto break2;
1387: }
1.9 paf 1388: if(c==0) {
1.1 paf 1389: result=-1;
1390: break;
1391: }
1392: }
1393:
1394: break2:
1.59 paf 1395: if(end!=begin) { // there is last piece?
1396: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1397: // strip last \n
1.10 paf 1398: end--;
1.137 parser 1399: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1400: end--;
1.59 paf 1401: }
1.206 paf 1402: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1403: if(!pc.string_start)
1404: pc.string_start=begin_pos;
1.59 paf 1405: // append it
1.206 paf 1406: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1407: }
1.59 paf 1408: }
1.206 paf 1409: if(!pc.string.is_empty()) { // something accumulated?
1410: // create STRING value: array of OP_VALUE+origin+vstring
1411: *lvalp=VL(
1412: new VString(*new String(pc.string, String::L_CLEAN)),
1413: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1414: // new pieces storage
1.206 paf 1415: pc.string.clear();
1416: pc.string_start.clear();
1.58 paf 1417: // make current result be pending for next call, return STRING for now
1.206 paf 1418: pc.pending_state=result; result=STRING;
1.58 paf 1419: }
1.67 paf 1420: if(skip_analized) {
1.206 paf 1421: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1422: }
1.58 paf 1423: return result;
1.1 paf 1424: }
1425:
1.206 paf 1426: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1427: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1428: return 1;
1.110 paf 1429: }
1.1 paf 1430:
1.110 paf 1431: static void yyprint(FILE *file, int type, YYSTYPE value) {
1432: if(type==STRING)
1.206 paf 1433: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1434: }
E-mail:
![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to compile.y CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [parser3project] / parser3 / src / main