Annotation of parser3/src/main/compile.y, revision 1.204.2.8.2.15
1.168 parser 1: %{
1.105 paf 2: /** @file
1.106 paf 3: Parser: compiler(lexical parser and grammar).
4:
1.204 paf 5: Copyright (c) 2001, 2003 ArtLebedev Group (http://www.artlebedev.com)
1.168 parser 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.106 paf 7:
1.204.2.8.2.1 (paf 8:): $Id: compile.y,v 1.204.2.8.2.14 2003/04/03 15:34:02 paf Exp $
1.88 paf 9: */
10:
1.106 paf 11: /**
12: @todo parser4:
13: - cache compiled code from request to request. to do that...
14: -#: make method definitions, @CLASS, @BASE, @USE instructions,
1.88 paf 15: which would be executed afterwards, and actions
16: now performed at compile time would be delayed to run time.
1.106 paf 17: -#: make cache expiration on time and on disk-change of class source
18: -#: in apache use subpools for compiled class storage
19: -#: in iis make up specialized Pool object for that
1.24 paf 20: */
21:
1.204.2.8.2.1 (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
1.204.2.8.2.9 (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:
1.204.2.8.2.1 (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:
1.204.2.8.2.1 (paf 41:): // defines
42:):
1.97 paf 43: #define USE_CONTROL_METHOD_NAME "USE"
1.204.2.8.2.1 (paf 44:): #define TAB_SIZE 8
45:):
46:): // forwards
1.1 paf 47:
1.204.2.8.2.1 (paf 48:): static int real_yyerror(Parse_control* pc, char* s);
49:): static void yyprint(FILE* file, int type, YYSTYPE value);
50:): static int yylex(YYSTYPE* lvalp, void* pc);
1.1 paf 51:
52:
1.8 paf 53: // local convinient inplace typecast & var
1.204.2.8 paf 54: #undef PC
1.204.2.8.2.9 (paf 55:: #define PC (*(Parse_control *)pc)
1.204.2.8 paf 56: #undef POOL
1.114 paf 57: #define POOL (*PC.pool)
1.107 paf 58: #ifndef DOXYGEN
1.1 paf 59: %}
60:
61: %pure_parser
62:
1.13 paf 63: %token EON
1.4 paf 64: %token STRING
1.1 paf 65: %token BOGUS
1.55 paf 66:
1.58 paf 67: %token BAD_STRING_COMPARISON_OPERATOR
1.114 paf 68: %token BAD_HEX_LITERAL
1.171 parser 69: %token BAD_METHOD_DECL_START
1.193 paf 70: %token BAD_METHOD_PARAMETER_NAME_CHARACTER
71: %token BAD_MATH_OPERATOR_CHARACTER
1.58 paf 72:
1.59 paf 73: %token LAND "&&"
1.58 paf 74: %token LOR "||"
1.193 paf 75: %token LXOR "!||"
76: %token NXOR "!|"
1.58 paf 77:
78: %token NLE "<="
79: %token NGE ">="
80: %token NEQ "=="
81: %token NNE "!="
1.195 paf 82: %token NSL "<<"
83: %token NSR ">>"
1.58 paf 84:
85: %token SLT "lt"
86: %token SGT "gt"
87: %token SLE "le"
88: %token SGE "ge"
89: %token SEQ "eq"
90: %token SNE "ne"
91:
1.67 paf 92: %token DEF "def"
93: %token IN "in"
94: %token FEXISTS "-f"
1.127 paf 95: %token DEXISTS "-d"
1.95 paf 96: %token IS "is"
1.67 paf 97:
1.57 paf 98: /* logical */
1.193 paf 99: %left "!||"
1.57 paf 100: %left "||"
101: %left "&&"
1.131 paf 102: %left '<' '>' "<=" ">=" "lt" "gt" "le" "ge"
103: %left "==" "!=" "eq" "ne"
104: %left "is" "def" "in" "-f" "-d"
1.57 paf 105:
106: /* bitwise */
1.193 paf 107: %left "!|"
1.131 paf 108: %left '|'
109: %left '&'
1.202 paf 110: %left "<<" ">>"
1.57 paf 111:
1.56 paf 112: /* numerical */
1.202 paf 113: %left '+' '-'
114: %left '*' '/' '\\' '%'
115: %left NUNARY /* unary - + */
116:
117: /* out-of-group */
118: %left '~' /* bitwise */
119: %left '!' /* logical */
1.1 paf 120:
121: %%
1.195 paf 122: all:
1.10 paf 123: one_big_piece {
1.204.2.8.2.1 (paf 124:): Method& method=*new Method(Method::CT_ANY,
1.81 paf 125: 0, 0, /*min, max numbered_params_count*/
1.204.2.8.2.1 (paf 126:: 0/*param_names*/, 0/*local_names*/,
127:: $1/*parser_code*/, 0/*native_code*/);
128:): PC.cclass->add_method(PC.alias_method(main_method_name), method);
1.10 paf 129: }
130: | methods;
131:
132: methods: method | methods method;
133: one_big_piece: maybe_codes;
134:
1.34 paf 135: method: control_method | code_method;
136:
137: control_method: '@' STRING '\n'
1.132 paf 138: maybe_control_strings {
1.204.2.8.2.1 (paf 139:: const String& command=*LA2S(*$2);
1.34 paf 140: YYSTYPE strings_code=$4;
1.204.2.8.2.1 (paf 141:): if(strings_code->count()<1*OPERATIONS_PER_OPVALUE) {
1.114 paf 142: strcpy(PC.error, "@");
1.204.2.8.2.1 (paf 143:: strcat(PC.error, command.cstr());
1.114 paf 144: strcat(PC.error, " is empty");
1.37 paf 145: YYERROR;
146: }
1.204.2.8.2.1 (paf 147:: if(command==CLASS_NAME) {
1.188 paf 148: if(PC.cclass->base_class()) { // already changed from default?
1.114 paf 149: strcpy(PC.error, "class already have a name '");
1.204.2.8.2.1 (paf 150:: strncat(PC.error, PC.cclass->name().cstr(), 100);
1.114 paf 151: strcat(PC.error, "'");
1.73 paf 152: YYERROR;
153: }
1.204.2.8.2.1 (paf 154:): if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.73 paf 155: // new class' name
1.204.2.8.2.1 (paf 156:: const String& name=*LA2S(*strings_code);
1.73 paf 157: // creating the class
1.204.2.8.2.1 (paf 158:: VStateless_class* cclass=new VClass;
159:: PC.cclass=cclass;
1.204.2.2 paf 160: PC.cclass->set_name(name);
1.73 paf 161: // append to request's classes
1.204.2.8.2.1 (paf 162:: PC.request.classes().put(name, cclass);
1.73 paf 163: } else {
1.204.2.8.2.1 (paf 164:): strcpy(PC.error, "@"CLASS_NAME" must contain only one line with class name (contains more then one)");
1.34 paf 165: YYERROR;
166: }
1.204.2.8.2.1 (paf 167:: } else if(command==USE_CONTROL_METHOD_NAME) {
168:): for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE)
169:: PC.request.use_file(PC.request.main_class, *LA2S(*strings_code, i));
170:: } else if(command==BASE_NAME) {
1.188 paf 171: if(PC.cclass->base_class()) { // already changed from default?
1.130 paf 172: strcpy(PC.error, "class already have a base '");
1.204.2.8.2.1 (paf 173:: strncat(PC.error, PC.cclass->base_class()->name().cstr(), 100);
1.130 paf 174: strcat(PC.error, "'");
175: YYERROR;
176: }
1.204.2.8.2.1 (paf 177:): if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
178:: const String& base_name=*LA2S(*strings_code);
179:: if(Value* base_class_value=PC.request.classes().get(base_name)) {
1.204.2.2 paf 180: // @CLASS == @BASE sanity check
1.204.2.3 paf 181: if(VStateless_class *base_class=base_class_value->get_class()) {
1.204.2.5 paf 182: if(PC.cclass==base_class) {
1.204.2.3 paf 183: strcpy(PC.error, "@"CLASS_NAME" equals @"BASE_NAME);
184: YYERROR;
185: }
186: PC.cclass->get_class()->set_base(base_class);
187: } else { // they asked to derive from a class without methods ['env' & co]
1.204.2.8.2.1 (paf 188:: strcpy(PC.error, base_name.cstr());
1.204.2.3 paf 189: strcat(PC.error, ": you can not derive from this class in @"BASE_NAME);
1.204.2.2 paf 190: YYERROR;
191: }
192: } else {
1.204.2.8.2.1 (paf 193:: strcpy(PC.error, base_name.cstr());
1.130 paf 194: strcat(PC.error, ": undefined class in @"BASE_NAME);
1.73 paf 195: YYERROR;
196: }
1.34 paf 197: } else {
1.130 paf 198: strcpy(PC.error, "@"BASE_NAME" must contain sole name");
1.34 paf 199: YYERROR;
200: }
1.130 paf 201: } else {
202: strcpy(PC.error, "'");
1.204.2.8.2.1 (paf 203:: strncat(PC.error, command.cstr(), MAX_STRING/2);
1.130 paf 204: strcat(PC.error, "' invalid special name. valid names are "
205: "'"CLASS_NAME"', '"USE_CONTROL_METHOD_NAME"' and '"BASE_NAME"'");
206: YYERROR;
1.34 paf 207: }
208: };
1.132 paf 209: maybe_control_strings: empty | control_strings;
1.204.2.2 paf 210: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2) };
1.37 paf 211: control_string: maybe_string '\n';
212: maybe_string: empty | STRING;
1.34 paf 213:
214: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n'
1.10 paf 215: maybe_codes {
1.204.2.8.2.1 (paf 216:: const String& name=*LA2S(*$2);
1.10 paf 217:
218: YYSTYPE params_names_code=$3;
1.204.2.8.2.3 (paf 219:: ArrayString* params_names=0;
1.204.2.2 paf 220: if(int size=params_names_code->count()) {
1.204.2.8.2.1 (paf 221:: params_names=new ArrayString;
222:): for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
1.204.2.2 paf 223: *params_names+=LA2S(*params_names_code, i);
1.75 paf 224: }
1.10 paf 225:
226: YYSTYPE locals_names_code=$4;
1.204.2.8.2.3 (paf 227:: ArrayString* locals_names=0;
1.204.2.2 paf 228: if(int size=locals_names_code->count()) {
1.204.2.8.2.1 (paf 229:: locals_names=new ArrayString;
230:): for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
1.204.2.2 paf 231: *locals_names+=LA2S(*locals_names_code, i);
1.75 paf 232: }
1.10 paf 233:
1.204.2.8.2.1 (paf 234:: Method& method=*new Method(
1.204.2.8.2.2 (paf 235:: //name,
1.122 paf 236: Method::CT_ANY,
1.81 paf 237: 0, 0/*min,max numbered_params_count*/,
1.76 paf 238: params_names, locals_names,
1.204.2.8.2.1 (paf 239:: $7, 0);
240:): PC.cclass->add_method(PC.alias_method(name), method);
1.8 paf 241: };
1.10 paf 242:
243: maybe_bracketed_strings: empty | bracketed_maybe_strings;
244: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
245: maybe_strings: empty | strings;
1.204.2.2 paf 246: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3) };
1.10 paf 247:
248: maybe_comment: empty | STRING;
1.1 paf 249:
250: /* codes */
251:
1.10 paf 252: maybe_codes: empty | codes;
253:
1.204.2.2 paf 254: codes: code | codes code { $$=$1; P(*$$, *$2) };
1.81 paf 255: code: write_string | action;
1.149 parser 256: action: get | put | call;
1.1 paf 257:
258: /* get */
259:
1.64 paf 260: get: get_value {
1.184 paf 261: $$=$1; /* stack: resulting value */
1.204.2.2 paf 262: changetail_or_append(*$$,
1.186 paf 263: OP_GET_ELEMENT, false, /*->*/OP_GET_ELEMENT__WRITE,
264: /*or */OP_WRITE_VALUE
1.184 paf 265: ); /* value=pop; wcontext.write(value) */
1.1 paf 266: };
1.163 parser 267: get_value: '$' get_name_value { $$=$2 };
1.64 paf 268: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 269: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 270: name_without_curly_rdive:
271: name_without_curly_rdive_read
272: | name_without_curly_rdive_class;
1.19 paf 273: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.204.2.2 paf 274: $$=N();
1.204.2.8.2.1 (paf 275:: ArrayOperation* diving_code=$1;
276:: const String* first_name=LA2S(*diving_code);
1.179 paf 277: // self.xxx... -> xxx...
1.204.2.8.2.1 (paf 278:): // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 279: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.204.2.8.2.1 (paf 280:): O(*yyval, OP_WITH_SELF); /* stack: starting context */
281:): P(*yyval, *diving_code,
1.22 paf 282: /* skip over... */
1.204.2.8.2.1 (paf 283:): diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.22 paf 284: } else {
1.204.2.8.2.1 (paf 285:): O(*yyval, OP_WITH_READ); /* stack: starting context */
1.179 paf 286:
1.201 paf 287: // ^if ELEMENT -> ^if ELEMENT_OR_OPERATOR
1.204.2.8.2.1 (paf 288:): // OP_VALUE+origin+string+OP_GET_ELEMENT. -> OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
289:): if(PC.in_call_value && diving_code->count()==4)
290:): diving_code->put(4-1, OP_GET_ELEMENT_OR_OPERATOR);
1.204.2.2 paf 291: P(*$$, *diving_code);
1.22 paf 292: }
293: /* diving code; stack: current context */
1.1 paf 294: };
1.204.2.2 paf 295: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2) };
296: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2) };
1.1 paf 297:
298: /* put */
299:
1.81 paf 300: put: '$' name_expr_wdive construct {
1.20 paf 301: $$=$2; /* stack: context,name */
1.204.2.2 paf 302: P(*$$, *$3); /* stack: context,name,constructor_value */
1.20 paf 303: };
1.44 paf 304: name_expr_wdive:
1.157 parser 305: name_expr_wdive_root
306: | name_expr_wdive_write
1.44 paf 307: | name_expr_wdive_class;
1.157 parser 308: name_expr_wdive_root: name_expr_dive_code {
1.204.2.2 paf 309: $$=N();
1.204.2.8.2.1 (paf 310:: ArrayOperation* diving_code=$1;
311:: const String* first_name=LA2S(*diving_code);
1.179 paf 312: // $self.xxx... -> $xxx...
1.204.2.8.2.1 (paf 313:): // OP_VALUE+origin+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 314: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.204.2.2 paf 315: O(*$$, OP_WITH_SELF); /* stack: starting context */
316: P(*$$, *diving_code,
1.23 paf 317: /* skip over... */
1.204.2.8.2.1 (paf 318:): diving_code->count()>=4?4/*OP_VALUE+origin+string+OP_GET_ELEMENTx*/:3/*OP_+origin+string*/);
1.23 paf 319: } else {
1.204.2.2 paf 320: O(*$$, OP_WITH_ROOT); /* stack: starting context */
321: P(*$$, *diving_code);
1.23 paf 322: }
323: /* diving code; stack: current context */
1.156 parser 324: };
1.157 parser 325: name_expr_wdive_write: '.' name_expr_dive_code {
1.204.2.2 paf 326: $$=N();
327: O(*$$, OP_WITH_WRITE); /* stack: starting context */
328: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 329: };
1.204.2.2 paf 330: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2) };
1.20 paf 331:
1.149 parser 332: construct:
1.163 parser 333: construct_square
334: | construct_round
335: | construct_curly
1.149 parser 336: ;
337: construct_square: '[' any_constructor_code_value ']' {
338: // stack: context, name
339: $$=$2; // stack: context, name, value
1.204.2.2 paf 340: O(*$$, OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 341: }
342: ;
1.149 parser 343: construct_round: '(' expr_value ')' {
1.204.2.2 paf 344: $$=N();
345: O(*$$, OP_PREPARE_TO_EXPRESSION);
1.149 parser 346: // stack: context, name
1.204.2.2 paf 347: P(*$$, *$2); // stack: context, name, value
348: O(*$$, OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 349: }
1.52 paf 350: ;
1.149 parser 351: construct_curly: '{' maybe_codes '}' {
352: // stack: context, name
1.204.2.2 paf 353: $$=N();
354: OA(*$$, OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 355: };
356:
1.55 paf 357: any_constructor_code_value:
1.157 parser 358: void_value /* optimized $var[] case */
1.52 paf 359: | STRING /* optimized $var[STRING] case */
1.55 paf 360: | constructor_code_value /* $var[something complex] */
1.1 paf 361: ;
1.55 paf 362: constructor_code_value: constructor_code {
1.204.2.2 paf 363: $$=N();
364: OA(*$$, OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 365: /* some code that writes to that context */
366: /* context=pop; stack: context.value() */
1.1 paf 367: };
1.55 paf 368: constructor_code: codes__excluding_sole_str_literal;
1.204.2.2 paf 369: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 370:
1.1 paf 371: /* call */
372:
1.66 paf 373: call: call_value {
374: $$=$1; /* stack: value */
1.204.2.2 paf 375: changetail_or_append(*$$,
1.186 paf 376: OP_CALL, true, /*->*/ OP_CALL__WRITE,
377: /*or */OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.66 paf 378: };
1.177 paf 379: call_value: '^' {
1.180 paf 380: PC.in_call_value=true;
1.177 paf 381: }
382: call_name {
1.180 paf 383: PC.in_call_value=false;
1.177 paf 384: }
1.154 parser 385: store_params EON { /* ^field.$method{vasya} */
386: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 387:
1.154 parser 388: YYSTYPE params_code=$5;
1.204.2.8.2.1 (paf 389:): if(params_code->count()==4) { // probably [] case. [OP_VALUE+origin+Void+STORE_PARAM]
390:): if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.140 parser 391: if(!value->is_defined()) // value is VVoid?
1.204.2.8.2.1 (paf 392:: params_code=0; // ^zzz[] case. don't append lone empty param.
1.186 paf 393: }
394: /* stack: context, method_junction */
1.204.2.2 paf 395: OA(*$$, OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
1.1 paf 396: };
397:
1.43 paf 398: call_name: name_without_curly_rdive;
1.38 paf 399:
1.204.2.2 paf 400: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2) };
1.69 paf 401: store_param:
402: store_square_param
403: | store_round_param
404: | store_curly_param
1.31 paf 405: ;
1.123 paf 406: store_square_param: '[' store_code_param_parts ']' {$$=$2};
1.69 paf 407: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 408: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 409: store_code_param_parts:
410: store_code_param_part
1.204.2.2 paf 411: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 412: ;
413: store_expr_param_parts:
414: store_expr_param_part
1.204.2.2 paf 415: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 416: ;
1.94 paf 417: store_curly_param_parts:
418: store_curly_param_part
1.204.2.2 paf 419: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3) }
1.94 paf 420: ;
1.120 paf 421: store_code_param_part: code_param_value {
1.32 paf 422: $$=$1;
1.204.2.2 paf 423: O(*$$, OP_STORE_PARAM);
1.120 paf 424: };
1.69 paf 425: store_expr_param_part: write_expr_value {
1.204.2.2 paf 426: $$=N();
427: OA(*$$, OP_EXPR_CODE__STORE_PARAM, $1);
1.69 paf 428: };
1.94 paf 429: store_curly_param_part: maybe_codes {
1.204.2.2 paf 430: $$=N();
431: OA(*$$, OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 432: };
1.120 paf 433: code_param_value:
1.157 parser 434: void_value /* optimized [;...] case */
1.120 paf 435: | STRING /* optimized [STRING] case */
436: | constructor_code_value /* [something complex] */
437: ;
1.90 paf 438: write_expr_value: expr_value {
1.204.2.2 paf 439: $$=N();
440: O(*$$, OP_PREPARE_TO_EXPRESSION);
441: P(*$$, *$1);
442: O(*$$, OP_WRITE_EXPR_RESULT);
1.69 paf 443: };
1.1 paf 444:
445: /* name */
446:
1.204.2.2 paf 447: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 448:
1.204.2.2 paf 449: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 450: name_step: name_advance1 '.';
451: name_advance1: name_expr_value {
1.177 paf 452: // we know that name_advance1 not called from ^xxx context
453: // so we'll not check for operator call possibility as we do in name_advance2
454:
1.1 paf 455: /* stack: context */
456: $$=$1; /* stack: context,name */
1.204.2.2 paf 457: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 458: };
459: name_advance2: name_expr_value {
460: /* stack: context */
461: $$=$1; /* stack: context,name */
1.204.2.2 paf 462: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 463: }
1.4 paf 464: | STRING BOGUS
1.1 paf 465: ;
466: name_expr_value:
1.4 paf 467: STRING /* subname_is_const */
1.1 paf 468: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 469: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 470: | name_square_code_value /* [codes] */
1.1 paf 471: ;
472: name_expr_subvar_value: '$' subvar_ref_name_rdive {
473: $$=$2;
1.204.2.2 paf 474: O(*$$, OP_GET_ELEMENT);
1.1 paf 475: };
1.4 paf 476: name_expr_with_subvar_value: STRING subvar_get_writes {
1.204.2.8.2.1 (paf 477:: ArrayOperation* code;
1.183 paf 478: {
1.204.2.2 paf 479: change_string_literal_to_write_string_literal(*(code=$1));
480: P(*code, *$2);
1.183 paf 481: }
1.204.2.2 paf 482: $$=N();
483: OA(*$$, OP_STRING_POOL, code);
1.1 paf 484: };
1.166 parser 485: name_square_code_value: '[' codes ']' {
1.204.2.2 paf 486: $$=N();
487: OA(*$$, OP_OBJECT_POOL, $2); /* stack: empty write context */
1.183 paf 488: /* some code that writes to that context */
489: /* context=pop; stack: context.value() */
1.160 parser 490: };
1.154 parser 491: subvar_ref_name_rdive: STRING {
1.204.2.2 paf 492: $$=N();
493: O(*$$, OP_WITH_READ);
494: P(*$$, *$1);
1.1 paf 495: };
1.204.2.2 paf 496: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 497: subvar__get_write: '$' subvar_ref_name_rdive {
498: $$=$2;
1.204.2.2 paf 499: O(*$$, OP_GET_ELEMENT__WRITE);
1.42 paf 500: };
501:
1.154 parser 502: class_prefix:
503: class_static_prefix
504: | class_constructor_prefix
505: ;
1.155 parser 506: class_static_prefix: STRING ':' {
507: $$=$1; // stack: class name string
1.204.2.8.2.8 (paf 508:: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
1.204.2.3 paf 509: if(VStateless_class* base=PC.cclass->base_class()) {
1.204.2.2 paf 510: change_string_literal_value(*$$, base->name());
1.189 paf 511: } else {
512: strcpy(PC.error, "no base class declared");
513: YYERROR;
514: }
515: }
1.204.2.2 paf 516: O(*$$, OP_GET_CLASS);
1.155 parser 517: };
518: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 519: $$=$1;
1.180 paf 520: if(!PC.in_call_value) {
1.154 parser 521: strcpy(PC.error, ":: not allowed here");
522: YYERROR;
523: }
1.204.2.2 paf 524: O(*$$, OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 525: };
526:
1.53 paf 527:
1.56 paf 528: /* expr */
1.53 paf 529:
1.81 paf 530: expr_value: expr {
1.182 paf 531: // see OP_PREPARE_TO_EXPRESSION!!
1.204.2.2 paf 532: if(($$=$1)->count()==2) // only one string literal in there?
533: change_string_literal_to_double_literal(*$$); // make that string literal Double
1.62 paf 534: };
1.56 paf 535: expr:
1.62 paf 536: STRING
1.64 paf 537: | get_value
1.66 paf 538: | call_value
1.64 paf 539: | '"' string_inside_quotes_value '"' { $$ = $2; }
1.145 parser 540: | '\'' string_inside_quotes_value '\'' { $$ = $2; }
1.60 paf 541: | '(' expr ')' { $$ = $2; }
542: /* stack: operand // stack: @operand */
1.204.2.2 paf 543: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP_NEG) }
1.202 paf 544: | '+' expr %prec NUNARY { $$=$2 }
1.204.2.2 paf 545: | '~' expr { $$=$2; O(*$$, OP_INV) }
546: | '!' expr { $$=$2; O(*$$, OP_NOT) }
547: | "def" expr { $$=$2; O(*$$, OP_DEF) }
548: | "in" expr { $$=$2; O(*$$, OP_IN) }
549: | "-f" expr { $$=$2; O(*$$, OP_FEXISTS) }
550: | "-d" expr { $$=$2; O(*$$, OP_DEXISTS) }
1.60 paf 551: /* stack: a,b // stack: a@b */
1.204.2.2 paf 552: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP_SUB) }
553: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP_ADD) }
554: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MUL) }
555: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP_DIV) }
556: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MOD) }
557: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP_INTDIV) }
558: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SL) }
559: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SR) }
560: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_AND) }
561: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_OR) }
562: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_XOR) }
563: | expr "&&" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_AND) }
564: | expr "||" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_OR) }
565: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP_LOG_XOR) }
566: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LT) }
567: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GT) }
568: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LE) }
569: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GE) }
570: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_EQ) }
571: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_NE) }
572: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LT) }
573: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GT) }
574: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LE) }
575: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GE) }
576: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_EQ) }
577: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_NE) }
578: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP_IS) }
1.56 paf 579: ;
1.55 paf 580:
1.65 paf 581: string_inside_quotes_value: maybe_codes {
1.204.2.2 paf 582: $$=N();
583: OA(*$$, OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 584: /* some code that writes to that context */
585: /* context=pop; stack: context.get_string() */
1.53 paf 586: };
1.1 paf 587:
1.27 paf 588: /* basics */
1.1 paf 589:
1.81 paf 590: write_string: STRING {
1.102 paf 591: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
1.204.2.2 paf 592: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 593: };
594:
1.204.2.8.2.8 (paf 595:: void_value: /* empty */ { $$=VL(new VVoid(), 0, 0, 0) };
1.204.2.2 paf 596: empty: /* empty */ { $$=N() };
1.1 paf 597:
598: %%
1.105 paf 599: #endif
1.1 paf 600:
601: /*
602: 000$111(2222)00
603: 000$111{3333}00
1.9 paf 604: $,^: push,=0
1.1 paf 605: 1:( { break=pop
606: 2:( ) pop
607: 3:{ } pop
608:
609: 000^111(2222)4444{33333}4000
1.9 paf 610: $,^: push,=0
1.1 paf 611: 1:( { break=pop
612: 2:( )=4
613: 3:{ }=4
614: 4:[^({]=pop
615: */
616:
1.204.2.8.2.1 (paf 617:): inline void ungetc(Parse_control& pc, uint last_line_end_col) {
618:): pc.source--;
619:): if(pc.pos.col==0) {
620:): --pc.pos.line; pc.pos.col=last_line_end_col;
621:): } else
622:): --pc.pos.col;
623:):
624:): }
1.204.2.8.2.9 (paf 625:: static int yylex(YYSTYPE *lvalp, void *apc) {
626:: register Parse_control& pc=*static_cast<Parse_control*>(apc);
627::
628:: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 629: #define RC {result=c; goto break2; }
1.1 paf 630:
1.204.2.8.2.9 (paf 631:: register int c;
632:: int result;
1.1 paf 633:
1.204.2.8.2.9 (paf 634:: if(pc.pending_state) {
635:: result=pc.pending_state;
636:: pc.pending_state=0;
1.1 paf 637: return result;
638: }
639:
1.204.2.8.2.9 (paf 640:: const char *begin=pc.source;
641:: Pos begin_pos=pc.pos;
1.91 paf 642: const char *end;
1.67 paf 643: int skip_analized=0;
1.50 paf 644: while(true) {
1.204.2.8.2.9 (paf 645:: c=*(end=(pc.source++));
646:: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 647:
1.4 paf 648: if(c=='\n') {
1.204.2.8.2.1 (paf 649:): pc.pos_next_line();
1.10 paf 650: } else
1.204.2.8.2.1 (paf 651:): pc.pos.col+=c=='\t'?TAB_SIZE:1;
1.73 paf 652:
1.204.2.8.2.9 (paf 653:: if(c=='@' && pc.pos.col==0+1) {
654:: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 655: // @SPECIAL
656: // ...
657: // @<here =
1.204.2.8.2.9 (paf 658:: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 659: } // continuing checks
1.204.2.8.2.9 (paf 660:: if(pc.ls==LS_USER) {
661:: push_LS(pc, LS_DEF_NAME);
1.171 parser 662: RC;
1.175 paf 663: } else // @ in first column inside some code [when could that be?]
1.171 parser 664: result=BAD_METHOD_DECL_START;
665: goto break2;
1.203 paf 666: } else if(c=='^') {
1.204.2.8.2.9 (paf 667:: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 668: // handle after-method situation
1.204.2.8.2.9 (paf 669:: pop_LS(pc);
1.203 paf 670: result=EON;
671: skip_analized=-1; // return to punctuation afterwards to assure it's literality
672: goto break2;
673: }
1.204.2.8.2.9 (paf 674:: switch(pc.ls) {
1.169 parser 675: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
676: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
677: case LS_VAR_NAME_SIMPLE_WITH_COLON:
678: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
679: case LS_VAR_NAME_CURLY:
680: case LS_METHOD_NAME:
1.194 paf 681: case LS_USER_COMMENT:
1.169 parser 682: case LS_DEF_COMMENT:
683: // no literals in names, please
684: break;
685: default:
1.204.2.8.2.9 (paf 686:: switch(*pc.source) {
1.165 parser 687: // ^escaping some punctuators
1.48 paf 688: case '^': case '$': case ';':
1.126 paf 689: case '(': case ')':
1.48 paf 690: case '[': case ']':
691: case '{': case '}':
1.172 parser 692: case '"': case ':':
1.40 paf 693: if(end!=begin) {
1.204.2.8.2.9 (paf 694:: if(!pc.string_start)
695:: pc.string_start=begin_pos;
1.40 paf 696: // append piece till ^
1.204.2.8.2.9 (paf 697:: pc.string.append_strdup(begin, end-begin);
1.40 paf 698: }
1.63 paf 699: // reset piece 'begin' position & line
1.204.2.8.2.9 (paf 700:: begin=pc.source; // ->punctuation
701:: begin_pos=pc.pos;
1.203 paf 702: // skip over _ after ^
1.204.2.8.2.9 (paf 703:: pc.source++; pc.pos.col++;
1.203 paf 704: // skip analysis = forced literal
705: continue;
1.114 paf 706:
707: // converting ^#HH into char(hex(HH))
708: case '#':
709: if(end!=begin) {
1.204.2.8.2.9 (paf 710:: if(!pc.string_start)
711:: pc.string_start=begin_pos;
1.114 paf 712: // append piece till ^
1.204.2.8.2.9 (paf 713:: pc.string.append_strdup(begin, end-begin);
1.114 paf 714: }
715: // #HH ?
1.204.2.8.2.9 (paf 716:: if(pc.source[0]=='#' && pc.source[1] && pc.source[2]) {
1.204.2.8.2.1 (paf 717:: char c=
1.204.2.8.2.9 (paf 718:: hex_value[(unsigned char)pc.source[1]]*0x10+
719:: hex_value[(unsigned char)pc.source[2]];
1.204.2.8.2.1 (paf 720:: if(c==0) {
1.114 paf 721: result=BAD_HEX_LITERAL;
722: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
723: }
724: // append char(hex(HH))
1.204.2.8.2.9 (paf 725:: pc.string.append(c);
1.114 paf 726: // skip over ^#HH
1.204.2.8.2.9 (paf 727:: pc.source+=3;
728:: pc.pos.col+=3;
1.114 paf 729: // reset piece 'begin' position & line
1.204.2.8.2.9 (paf 730:: begin=pc.source; // ->after ^#HH
731:: begin_pos=pc.pos;
1.203 paf 732: // skip analysis = forced literal
1.114 paf 733: continue;
734: }
735: break;
1.1 paf 736: }
1.169 parser 737: break;
1.203 paf 738: }
1.169 parser 739: }
1.113 paf 740: // #comment start skipping
1.204.2.8.2.9 (paf 741:: if(c=='#' && pc.pos.col==1) {
1.112 paf 742: if(end!=begin) {
1.204.2.8.2.9 (paf 743:: if(!pc.string_start)
744:: pc.string_start=begin_pos;
1.112 paf 745: // append piece till #
1.204.2.8.2.9 (paf 746:: pc.string.append_strdup(begin, end-begin);
1.112 paf 747: }
748: // fall into COMMENT lexical state [wait for \n]
1.204.2.8.2.9 (paf 749:: push_LS(pc, LS_USER_COMMENT);
1.175 paf 750: continue;
1.112 paf 751: }
1.204.2.8.2.9 (paf 752:: switch(pc.ls) {
1.10 paf 753:
754: // USER'S = NOT OURS
1.1 paf 755: case LS_USER:
1.204.2.8.2.1 (paf 756:): case LS_NAME_SQUARE_PART: // name.[here].xxx
1.204.2.8.2.9 (paf 757:: if(pc.trim_bof)
1.153 parser 758: switch(c) {
759: case '\n': case ' ': case '\t':
1.204.2.8.2.9 (paf 760:: begin=pc.source;
761:: begin_pos=pc.pos;
1.152 parser 762: continue; // skip it
1.153 parser 763: default:
1.204.2.8.2.9 (paf 764:: pc.trim_bof=false;
1.152 parser 765: }
1.48 paf 766: switch(c) {
767: case '$':
1.204.2.8.2.9 (paf 768:: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 769: RC;
770: case '^':
1.204.2.8.2.9 (paf 771:: push_LS(pc, LS_METHOD_NAME);
1.48 paf 772: RC;
1.166 parser 773: case ']':
1.204.2.8.2.9 (paf 774:: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 775: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.204.2.8.2.9 (paf 776:: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 777: RC;
778: }
1.160 parser 779: break;
1.166 parser 780: case '[': // $name.[co<[>de]
1.204.2.8.2.9 (paf 781:: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 782: lexical_brackets_nestage++;
1.161 parser 783: break;
1.112 paf 784: }
785: break;
786:
787: // #COMMENT
1.194 paf 788: case LS_USER_COMMENT:
1.112 paf 789: if(c=='\n') {
790: // skip comment
1.204.2.8.2.9 (paf 791:: begin=pc.source;
792:: begin_pos=pc.pos;
1.112 paf 793:
1.204.2.8.2.9 (paf 794:: pop_LS(pc);
1.112 paf 795: continue;
1.1 paf 796: }
1.48 paf 797: break;
798:
799: // STRING IN EXPRESSION
1.145 parser 800: case LS_EXPRESSION_STRING_QUOTED:
801: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 802: switch(c) {
803: case '"':
1.145 parser 804: case '\'':
805: if(
1.204.2.8.2.9 (paf 806:: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
807:: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
808:: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 809: RC;
810: }
811: break;
1.48 paf 812: case '$':
1.204.2.8.2.9 (paf 813:: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 814: RC;
815: case '^':
1.204.2.8.2.9 (paf 816:: push_LS(pc, LS_METHOD_NAME);
1.48 paf 817: RC;
1.10 paf 818: }
819: break;
820:
821: // METHOD DEFINITION
822: case LS_DEF_NAME:
1.48 paf 823: switch(c) {
824: case '[':
1.204.2.8.2.9 (paf 825:: pc.ls=LS_DEF_PARAMS;
1.48 paf 826: RC;
827: case '\n':
1.204.2.8.2.9 (paf 828:: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 829: RC;
1.10 paf 830: }
831: break;
1.48 paf 832:
1.10 paf 833: case LS_DEF_PARAMS:
1.48 paf 834: switch(c) {
1.192 paf 835: case '$': // common error
1.193 paf 836: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
837: goto break2;
1.48 paf 838: case ';':
839: RC;
840: case ']':
1.204.2.8.2.9 (paf 841:: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 842: RC;
1.49 paf 843: case '\n': // wrong. bailing out
1.204.2.8.2.9 (paf 844:: pop_LS(pc);
1.48 paf 845: RC;
1.10 paf 846: }
847: break;
1.48 paf 848:
1.10 paf 849: case LS_DEF_LOCALS:
1.48 paf 850: switch(c) {
851: case '[':
852: case ';':
853: RC;
854: case ']':
1.204.2.8.2.9 (paf 855:: pc.ls=LS_DEF_COMMENT;
1.48 paf 856: RC;
857: case '\n': // wrong. bailing out
1.204.2.8.2.9 (paf 858:: pop_LS(pc);
1.48 paf 859: RC;
1.10 paf 860: }
861: break;
1.48 paf 862:
1.10 paf 863: case LS_DEF_COMMENT:
864: if(c=='\n') {
1.204.2.8.2.9 (paf 865:: pop_LS(pc);
1.48 paf 866: RC;
1.37 paf 867: }
868: break;
869:
1.48 paf 870: case LS_DEF_SPECIAL_BODY:
1.175 paf 871: if(c=='\n')
1.48 paf 872: RC;
873: break;
874:
875: // (EXPRESSION)
1.69 paf 876: case LS_VAR_ROUND:
877: case LS_METHOD_ROUND:
1.48 paf 878: switch(c) {
879: case ')':
880: if(--lexical_brackets_nestage==0)
1.204.2.8.2.9 (paf 881:: if(pc.ls==LS_METHOD_ROUND) // method round param ended
882:: pc.ls=LS_METHOD_AFTER; // look for method end
883:: else // pc.ls==LS_VAR_ROUND // variable constructor ended
884:: pop_LS(pc); // return to normal life
1.48 paf 885: RC;
1.194 paf 886: case '#': // comment start skipping
887: if(end!=begin) {
1.204.2.8.2.9 (paf 888:: if(!pc.string_start)
889:: pc.string_start=begin_pos;
1.194 paf 890: // append piece till #
1.204.2.8.2.9 (paf 891:: pc.string.append_strdup(begin, end-begin);
1.194 paf 892: }
893: // fall into COMMENT lexical state [wait for \n]
1.204.2.8.2.9 (paf 894:: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 895: lexical_brackets_nestage=1;
896: continue;
1.48 paf 897: case '$':
1.204.2.8.2.9 (paf 898:: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 899: RC;
900: case '^':
1.204.2.8.2.9 (paf 901:: push_LS(pc, LS_METHOD_NAME);
1.48 paf 902: RC;
903: case '(':
904: lexical_brackets_nestage++;
905: RC;
1.67 paf 906: case '-':
1.204.2.8.2.9 (paf 907:: switch(*pc.source) {
1.127 paf 908: case 'f': // -f
1.67 paf 909: skip_analized=1;
910: result=FEXISTS;
1.127 paf 911: goto break2;
912: case 'd': // -d
913: skip_analized=1;
914: result=DEXISTS;
915: goto break2;
1.191 paf 916: default: // minus
1.67 paf 917: result=c;
1.127 paf 918: goto break2;
919: }
1.67 paf 920: goto break2;
1.173 paf 921: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 922: case '~':
1.48 paf 923: case ';':
924: RC;
1.193 paf 925: case '&': case '|':
1.204.2.8.2.9 (paf 926:: if(*pc.source==c) { // && ||
1.193 paf 927: result=c=='&'?LAND:LOR;
1.67 paf 928: skip_analized=1;
1.58 paf 929: } else
930: result=c;
931: goto break2;
1.193 paf 932: case '!':
1.204.2.8.2.9 (paf 933:: switch(pc.source[0]) {
1.193 paf 934: case '|': // !| !||
935: skip_analized=1;
1.204.2.8.2.9 (paf 936:: if(pc.source[1]=='|') {
1.193 paf 937: skip_analized++;
938: result=LXOR;
939: } else
940: result=NXOR;
941: goto break2;
942: case '=': // !=
943: skip_analized=1;
944: result=NNE;
945: goto break2;
946: }
947: RC;
1.195 paf 948:
949: case '<': // <<, <=, <
1.204.2.8.2.9 (paf 950:: switch(*pc.source) {
1.195 paf 951: case '<': // <[<]
952: skip_analized=1; result=NSL; break;
953: case '=': // <[=]
954: skip_analized=1; result=NLE; break;
955: default: // <[]
956: result=c; break;
957: }
958: goto break2;
959: case '>': // >>, >=, >
1.204.2.8.2.9 (paf 960:: switch(*pc.source) {
1.195 paf 961: case '>': // >[>]
962: skip_analized=1; result=NSR; break;
963: case '=': // >[=]
964: skip_analized=1; result=NGE; break;
965: default: // >[]
966: result=c; break;
967: }
968: goto break2;
969: case '=': // ==
1.204.2.8.2.9 (paf 970:: switch(*pc.source) {
1.195 paf 971: case '=': // =[=]
972: skip_analized=1; result=NEQ; break;
973: default: // =[]
974: result=c; break; // not used now
975: }
1.58 paf 976: goto break2;
1.195 paf 977:
1.48 paf 978: case '"':
1.204.2.8.2.9 (paf 979:: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 980: RC;
981: case '\'':
1.204.2.8.2.9 (paf 982:: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 983: RC;
1.50 paf 984: case 'l': case 'g': case 'e': case 'n':
1.51 paf 985: if(end==begin) // right after whitespace
1.204.2.8.2.9 (paf 986:: if(isspace(pc.source[1])) {
987:: switch(*pc.source) {
1.117 paf 988: // case '?': // ok [and bad cases, yacc would bark at them]
989: case 't': // lt gt [et nt]
990: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
991: skip_analized=1;
992: goto break2;
993: case 'e': // le ge ne [ee]
994: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
995: skip_analized=1;
996: goto break2;
997: case 'q': // eq [lq gq nq]
998: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
999: skip_analized=1;
1000: goto break2;
1001: }
1.67 paf 1002: }
1003: break;
1004: case 'i':
1005: if(end==begin) // right after whitespace
1.204.2.8.2.9 (paf 1006:: if(isspace(pc.source[1])) {
1007:: switch(pc.source[0]) {
1.117 paf 1008: case 'n': // in
1.95 paf 1009: skip_analized=1;
1010: result=IN;
1011: goto break2;
1.117 paf 1012: case 's': // is
1.95 paf 1013: skip_analized=1;
1014: result=IS;
1015: goto break2;
1016: }
1.67 paf 1017: }
1018: break;
1019: case 'd':
1020: if(end==begin) // right after whitespace
1.204.2.8.2.9 (paf 1021:: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.67 paf 1022: skip_analized=2;
1023: result=DEF;
1.58 paf 1024: goto break2;
1.50 paf 1025: }
1.48 paf 1026: break;
1027: case ' ': case '\t': case '\n':
1.63 paf 1028: if(end!=begin) { // there were a string after previous operator?
1029: result=0; // return that string
1030: goto break2;
1.48 paf 1031: }
1.63 paf 1032: // that's a leading|traling space or after-operator-space
1033: // ignoring it
1034: // reset piece 'begin' position & line
1.204.2.8.2.9 (paf 1035:: begin=pc.source; // after whitespace char
1036:: begin_pos=pc.pos;
1.48 paf 1037: continue;
1.1 paf 1038: }
1039: break;
1.194 paf 1040: case LS_EXPRESSION_COMMENT:
1041: if(c=='(')
1042: lexical_brackets_nestage++;
1043:
1.204.2.8.2.9 (paf 1044:: switch(*pc.source) {
1.194 paf 1045: case '\n': case ')':
1.204.2.8.2.9 (paf 1046:: if(*pc.source==')')
1.194 paf 1047: if(--lexical_brackets_nestage!=0)
1048: continue;
1049:
1050: // skip comment
1.204.2.8.2.9 (paf 1051:: begin=pc.source;
1052:: begin_pos=pc.pos;
1.194 paf 1053:
1.204.2.8.2.9 (paf 1054:: pop_LS(pc);
1.194 paf 1055: continue;
1056: }
1057: break;
1.1 paf 1058:
1.10 paf 1059: // VARIABLE GET/PUT/WITH
1.166 parser 1060: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1061: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1062: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1063: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1064: if(
1.204.2.8.2.9 (paf 1065:: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1066:: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1067: // name in expr ends also before
1.48 paf 1068: switch(c) {
1.181 paf 1069: // expression minus
1.92 paf 1070: case '-':
1.181 paf 1071: // expression integer division
1072: case '\\':
1.204.2.8.2.9 (paf 1073:: pop_LS(pc);
1.204.2.8.2.1 (paf 1074:): pc.ungetc();
1.48 paf 1075: result=EON;
1076: goto break2;
1077: }
1078: }
1.166 parser 1079: if(
1.204.2.8.2.9 (paf 1080:: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1081:: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1082: // name already has ':', stop before next
1083: switch(c) {
1084: case ':':
1.204.2.8.2.9 (paf 1085:: pop_LS(pc);
1.204.2.8.2.1 (paf 1086:): pc.ungetc();
1.142 parser 1087: result=EON;
1088: goto break2;
1089: }
1090: }
1.48 paf 1091: switch(c) {
1092: case 0:
1093: case ' ': case '\t': case '\n':
1094: case ';':
1.126 paf 1095: case ']': case '}': case ')':
1096: case '"': case '\'':
1.139 parser 1097: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1098: case '+': case '*': case '/': case '%':
1099: case '&': case '|':
1100: case '=': case '!':
1.99 paf 1101: // common delimiters
1.190 paf 1102: case ',': case '?': case '#':
1.139 parser 1103: // before call
1104: case '^':
1.204.2.8.2.9 (paf 1105:: pop_LS(pc);
1.204.2.8.2.1 (paf 1106:): pc.ungetc();
1.13 paf 1107: result=EON;
1.1 paf 1108: goto break2;
1.48 paf 1109: case '[':
1.162 parser 1110: // $name.<[>code]
1.204.2.8.2.9 (paf 1111:: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1112: end[-1]=='$'/*was start of get*/ ||
1113: end[-1]==':'/*was class name delim */ ||
1114: end[-1]=='.'/*was name delim */
1.162 parser 1115: )) {
1.204.2.8.2.9 (paf 1116:: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1117: lexical_brackets_nestage=1;
1118: RC;
1119: }
1.204.2.8.2.9 (paf 1120:: pc.ls=LS_VAR_SQUARE;
1.1 paf 1121: lexical_brackets_nestage=1;
1.48 paf 1122: RC;
1123: case '{':
1124: if(begin==end) { // ${name}, no need of EON, switching LS
1.204.2.8.2.9 (paf 1125:: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1126: } else {
1.204.2.8.2.9 (paf 1127:: pc.ls=LS_VAR_CURLY;
1.48 paf 1128: lexical_brackets_nestage=1;
1129: }
1.69 paf 1130:
1.48 paf 1131: RC;
1132: case '(':
1.204.2.8.2.9 (paf 1133:: pc.ls=LS_VAR_ROUND;
1.1 paf 1134: lexical_brackets_nestage=1;
1.48 paf 1135: RC;
1136: case '.': // name part delim
1137: case '$': // name part subvar
1.160 parser 1138: case ':': // class<:>name
1.166 parser 1139: // go to _WITHOUT_COLON state variant...
1.204.2.8.2.9 (paf 1140:: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1141:: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1142:: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1143:: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1144: // ...stop before next ':'
1.48 paf 1145: RC;
1.1 paf 1146: }
1147: break;
1.48 paf 1148:
1.1 paf 1149: case LS_VAR_NAME_CURLY:
1.48 paf 1150: switch(c) {
1.162 parser 1151: case '[':
1.166 parser 1152: // ${name.<[>code]}
1.204.2.8.2.9 (paf 1153:: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1154: lexical_brackets_nestage=1;
1155: RC;
1.48 paf 1156: case '}': // ${name} finished, restoring LS
1.204.2.8.2.9 (paf 1157:: pop_LS(pc);
1.48 paf 1158: RC;
1159: case '.': // name part delim
1160: case '$': // name part subvar
1161: case ':': // ':name' or 'class:name'
1162: RC;
1.1 paf 1163: }
1164: break;
1.48 paf 1165:
1166: case LS_VAR_SQUARE:
1167: switch(c) {
1168: case '$':
1.204.2.8.2.9 (paf 1169:: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1170: RC;
1171: case '^':
1.204.2.8.2.9 (paf 1172:: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1173: RC;
1174: case ']':
1.1 paf 1175: if(--lexical_brackets_nestage==0) {
1.204.2.8.2.9 (paf 1176:: pop_LS(pc);
1.48 paf 1177: RC;
1.1 paf 1178: }
1.48 paf 1179: break;
1180: case ';': // operator_or_fmt;value delim
1181: RC;
1182: case '[':
1183: lexical_brackets_nestage++;
1184: break;
1.1 paf 1185: }
1186: break;
1.48 paf 1187:
1.1 paf 1188: case LS_VAR_CURLY:
1.48 paf 1189: switch(c) {
1190: case '$':
1.204.2.8.2.9 (paf 1191:: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1192: RC;
1193: case '^':
1.204.2.8.2.9 (paf 1194:: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1195: RC;
1196: case '}':
1.1 paf 1197: if(--lexical_brackets_nestage==0) {
1.204.2.8.2.9 (paf 1198:: pop_LS(pc);
1.48 paf 1199: RC;
1.1 paf 1200: }
1.48 paf 1201: break;
1202: case '{':
1.1 paf 1203: lexical_brackets_nestage++;
1.48 paf 1204: break;
1205: }
1.1 paf 1206: break;
1207:
1.10 paf 1208: // METHOD CALL
1.1 paf 1209: case LS_METHOD_NAME:
1.48 paf 1210: switch(c) {
1211: case '[':
1.166 parser 1212: // ^name.<[>code].xxx
1.204.2.8.2.9 (paf 1213:: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1214: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1215: end[-1]==':'/*was class name delim */ ||
1216: end[-1]=='.'/*was name delim */
1.162 parser 1217: )) {
1.204.2.8.2.9 (paf 1218:: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1219: lexical_brackets_nestage=1;
1220: RC;
1221: }
1.204.2.8.2.9 (paf 1222:: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1223: lexical_brackets_nestage=1;
1.48 paf 1224: RC;
1225: case '{':
1.204.2.8.2.9 (paf 1226:: pc.ls=LS_METHOD_CURLY;
1.1 paf 1227: lexical_brackets_nestage=1;
1.48 paf 1228: RC;
1.69 paf 1229: case '(':
1.204.2.8.2.9 (paf 1230:: pc.ls=LS_METHOD_ROUND;
1.69 paf 1231: lexical_brackets_nestage=1;
1232: RC;
1.48 paf 1233: case '.': // name part delim
1234: case '$': // name part subvar
1235: case ':': // ':name' or 'class:name'
1.170 parser 1236: case '^': // ^abc^xxx wrong. bailing out
1237: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.48 paf 1238: RC;
1.1 paf 1239: }
1240: break;
1.48 paf 1241:
1242: case LS_METHOD_SQUARE:
1243: switch(c) {
1244: case '$':
1.204.2.8.2.9 (paf 1245:: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1246: RC;
1247: case '^':
1.204.2.8.2.9 (paf 1248:: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1249: RC;
1250: case ';': // param delim
1251: RC;
1252: case ']':
1.1 paf 1253: if(--lexical_brackets_nestage==0) {
1.204.2.8.2.9 (paf 1254:: pc.ls=LS_METHOD_AFTER;
1.48 paf 1255: RC;
1.1 paf 1256: }
1.48 paf 1257: break;
1258: case '[':
1.1 paf 1259: lexical_brackets_nestage++;
1.48 paf 1260: break;
1261: }
1.1 paf 1262: break;
1.48 paf 1263:
1.1 paf 1264: case LS_METHOD_CURLY:
1.48 paf 1265: switch(c) {
1266: case '$':
1.204.2.8.2.9 (paf 1267:: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1268: RC;
1269: case '^':
1.204.2.8.2.9 (paf 1270:: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1271: RC;
1272: case ';': // param delim
1.48 paf 1273: RC;
1274: case '}':
1.1 paf 1275: if(--lexical_brackets_nestage==0) {
1.204.2.8.2.9 (paf 1276:: pc.ls=LS_METHOD_AFTER;
1.48 paf 1277: RC;
1.1 paf 1278: }
1.48 paf 1279: break;
1280: case '{':
1.1 paf 1281: lexical_brackets_nestage++;
1.48 paf 1282: break;
1283: }
1.1 paf 1284: break;
1.48 paf 1285:
1.1 paf 1286: case LS_METHOD_AFTER:
1.69 paf 1287: if(c=='[') {/* ][ }[ )[ */
1.204.2.8.2.9 (paf 1288:: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1289: lexical_brackets_nestage=1;
1.48 paf 1290: RC;
1.1 paf 1291: }
1.69 paf 1292: if(c=='{') {/* ]{ }{ ){ */
1.204.2.8.2.9 (paf 1293:: pc.ls=LS_METHOD_CURLY;
1.69 paf 1294: lexical_brackets_nestage=1;
1295: RC;
1296: }
1297: if(c=='(') {/* ]( }( )( */
1.204.2.8.2.9 (paf 1298:: pc.ls=LS_METHOD_ROUND;
1.1 paf 1299: lexical_brackets_nestage=1;
1.48 paf 1300: RC;
1.1 paf 1301: }
1.204.2.8.2.9 (paf 1302:: pop_LS(pc);
1.204.2.8.2.1 (paf 1303:): pc.ungetc();
1.13 paf 1304: result=EON;
1.1 paf 1305: goto break2;
1306: }
1.9 paf 1307: if(c==0) {
1.1 paf 1308: result=-1;
1309: break;
1310: }
1311: }
1312:
1313: break2:
1.59 paf 1314: if(end!=begin) { // there is last piece?
1315: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1316: // strip last \n
1.10 paf 1317: end--;
1.137 parser 1318: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1319: end--;
1.59 paf 1320: }
1.204.2.8.2.9 (paf 1321:: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1322:: if(!pc.string_start)
1323:: pc.string_start=begin_pos;
1.59 paf 1324: // append it
1.204.2.8.2.9 (paf 1325:: pc.string.append_strdup(begin, end-begin);
1.30 paf 1326: }
1.59 paf 1327: }
1.204.2.8.2.9 (paf 1328:: if(!pc.string.is_empty()) { // something accumulated?
1.204.2.8.2.1 (paf 1329:): // create STRING value: array of OP_VALUE+origin+vstring
1.204.2.8.2.8 (paf 1330:: *lvalp=VL(
1.204.2.8.2.9 (paf 1331:: new VString(*new String(pc.string, String::L_CLEAN)),
1332:: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1333: // new pieces storage
1.204.2.8.2.9 (paf 1334:: pc.string.clear();
1335:: pc.string_start.clear();
1.58 paf 1336: // make current result be pending for next call, return STRING for now
1.204.2.8.2.9 (paf 1337:: pc.pending_state=result; result=STRING;
1.58 paf 1338: }
1.67 paf 1339: if(skip_analized) {
1.204.2.8.2.9 (paf 1340:: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1341: }
1.58 paf 1342: return result;
1.1 paf 1343: }
1344:
1.204.2.8.2.9 (paf 1345:: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1346: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1347: return 1;
1.110 paf 1348: }
1.1 paf 1349:
1.110 paf 1350: static void yyprint(FILE *file, int type, YYSTYPE value) {
1351: if(type==STRING)
1.204.2.8.2.1 (paf 1352:: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1353: }
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