Annotation of parser3/src/main/compile.y, revision 1.204.2.8.2.11
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 1.204.2.8.2.10 2003/04/03 06:16:05 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:
1.204.2.8.2.9 (paf 48:: static int real_yyerror(Parse_control *pc, char *s);
1.9 paf 49: static void yyprint(FILE *file, int type, YYSTYPE value);
1.125 paf 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;
1.204.2.2 paf 141: if(strings_code->count()<1*2) {
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: }
1.204.2.2 paf 154: if(strings_code->count()==1*2) {
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 {
1.114 paf 164: strcpy(PC.error, "@"CLASS_NAME" must contain sole name");
1.34 paf 165: YYERROR;
166: }
1.204.2.8.2.1 (paf 167:: } else if(command==USE_CONTROL_METHOD_NAME) {
1.204.2.8.2.5 (paf 168:: for(size_t i=0; i<strings_code->count(); i+=2)
1.204.2.8.2.1 (paf 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: }
1.204.2.2 paf 177: if(strings_code->count()==1*2) {
1.204.2.8.2.1 (paf 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;
1.75 paf 222: for(int i=0; i<size; i+=2)
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;
1.75 paf 230: for(int i=0; i<size; i+=2)
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...
278: // OP_VALUE+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 279: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.204.2.2 paf 280: O(*$$, OP_WITH_SELF); /* stack: starting context */
281: P(*$$, *diving_code,
1.22 paf 282: /* skip over... */
1.204.2.2 paf 283: diving_code->count()>=3?3/*OP_VALUE+string+OP_GET_ELEMENTx*/:2/*OP_+string*/);
1.22 paf 284: } else {
1.204.2.2 paf 285: O(*$$, OP_WITH_READ); /* stack: starting context */
1.179 paf 286:
1.201 paf 287: // ^if ELEMENT -> ^if ELEMENT_OR_OPERATOR
288: // OP_VALUE+string+OP_GET_ELEMENT. -> OP_VALUE+string+OP_GET_ELEMENT_OR_OPERATOR.
1.204.2.2 paf 289: if(PC.in_call_value && diving_code->count()==3)
1.204.2.8.2.6 (paf 290:: diving_code->put(2, OP_GET_ELEMENT_OR_OPERATOR);
1.204.2.2 paf 291: P(*$$, *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: $$=N();
1.204.2.8.2.1 (paf 310:: ArrayOperation* diving_code=$1;
311:: const String* first_name=LA2S(*diving_code);
1.179 paf 312: // $self.xxx... -> $xxx...
313: // OP_VALUE+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 314: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.204.2.2 paf 315: O(*$$, OP_WITH_SELF); /* stack: starting context */
316: P(*$$, *diving_code,
1.23 paf 317: /* skip over... */
1.204.2.2 paf 318: diving_code->count()>=3?3/*OP_VALUE+string+OP_GET_ELEMENTx*/:2/*OP_+string*/);
1.23 paf 319: } else {
1.204.2.2 paf 320: O(*$$, 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: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 387:
1.154 parser 388: YYSTYPE params_code=$5;
1.204.2.2 paf 389: if(params_code->count()==3) { // probably [] case. [OP_VALUE + Void + STORE_PARAM]
1.204.2.8.2.1 (paf 390:: if(Value* value=LA2V(*params_code)) // it is OP_VALUE + value?
1.140 parser 391: if(!value->is_defined()) // value is VVoid?
1.204.2.8.2.1 (paf 392:: params_code=0; // ^zzz[] case. don't append lone empty param.
1.186 paf 393: }
394: /* stack: context, method_junction */
1.204.2.2 paf 395: OA(*$$, 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 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;
1.204.2.8.2.1 (paf 642:): uint last_line_end_col=0;
1.91 paf 643: const char *end;
1.67 paf 644: int skip_analized=0;
1.50 paf 645: while(true) {
1.204.2.8.2.9 (paf 646:: c=*(end=(pc.source++));
647:: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 648:
1.4 paf 649: if(c=='\n') {
1.204.2.8.2.9 (paf 650:: pc.pos.line++;
1.204.2.8.2.1 (paf 651:): last_line_end_col=pc.pos.col;
1.204.2.8.2.9 (paf 652:: pc.pos.col=0;
1.10 paf 653: } else
1.204.2.8.2.1 (paf 654:): pc.pos.col+=c=='\t'?TAB_SIZE:1;
1.73 paf 655:
1.204.2.8.2.9 (paf 656:: if(c=='@' && pc.pos.col==0+1) {
657:: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 658: // @SPECIAL
659: // ...
660: // @<here =
1.204.2.8.2.9 (paf 661:: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 662: } // continuing checks
1.204.2.8.2.9 (paf 663:: if(pc.ls==LS_USER) {
664:: push_LS(pc, LS_DEF_NAME);
1.171 parser 665: RC;
1.175 paf 666: } else // @ in first column inside some code [when could that be?]
1.171 parser 667: result=BAD_METHOD_DECL_START;
668: goto break2;
1.203 paf 669: } else if(c=='^') {
1.204.2.8.2.9 (paf 670:: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 671: // handle after-method situation
1.204.2.8.2.9 (paf 672:: pop_LS(pc);
1.203 paf 673: result=EON;
674: skip_analized=-1; // return to punctuation afterwards to assure it's literality
675: goto break2;
676: }
1.204.2.8.2.9 (paf 677:: switch(pc.ls) {
1.169 parser 678: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
679: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
680: case LS_VAR_NAME_SIMPLE_WITH_COLON:
681: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
682: case LS_VAR_NAME_CURLY:
683: case LS_METHOD_NAME:
1.194 paf 684: case LS_USER_COMMENT:
1.169 parser 685: case LS_DEF_COMMENT:
686: // no literals in names, please
687: break;
688: default:
1.204.2.8.2.9 (paf 689:: switch(*pc.source) {
1.165 parser 690: // ^escaping some punctuators
1.48 paf 691: case '^': case '$': case ';':
1.126 paf 692: case '(': case ')':
1.48 paf 693: case '[': case ']':
694: case '{': case '}':
1.172 parser 695: case '"': case ':':
1.40 paf 696: if(end!=begin) {
1.204.2.8.2.9 (paf 697:: if(!pc.string_start)
698:: pc.string_start=begin_pos;
1.40 paf 699: // append piece till ^
1.204.2.8.2.9 (paf 700:: pc.string.append_strdup(begin, end-begin);
1.40 paf 701: }
1.63 paf 702: // reset piece 'begin' position & line
1.204.2.8.2.9 (paf 703:: begin=pc.source; // ->punctuation
704:: begin_pos=pc.pos;
1.203 paf 705: // skip over _ after ^
1.204.2.8.2.9 (paf 706:: pc.source++; pc.pos.col++;
1.203 paf 707: // skip analysis = forced literal
708: continue;
1.114 paf 709:
710: // converting ^#HH into char(hex(HH))
711: case '#':
712: if(end!=begin) {
1.204.2.8.2.9 (paf 713:: if(!pc.string_start)
714:: pc.string_start=begin_pos;
1.114 paf 715: // append piece till ^
1.204.2.8.2.9 (paf 716:: pc.string.append_strdup(begin, end-begin);
1.114 paf 717: }
718: // #HH ?
1.204.2.8.2.9 (paf 719:: if(pc.source[0]=='#' && pc.source[1] && pc.source[2]) {
1.204.2.8.2.1 (paf 720:: char c=
1.204.2.8.2.9 (paf 721:: hex_value[(unsigned char)pc.source[1]]*0x10+
722:: hex_value[(unsigned char)pc.source[2]];
1.204.2.8.2.1 (paf 723:: if(c==0) {
1.114 paf 724: result=BAD_HEX_LITERAL;
725: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
726: }
727: // append char(hex(HH))
1.204.2.8.2.9 (paf 728:: pc.string.append(c);
1.114 paf 729: // skip over ^#HH
1.204.2.8.2.9 (paf 730:: pc.source+=3;
731:: pc.pos.col+=3;
1.114 paf 732: // reset piece 'begin' position & line
1.204.2.8.2.9 (paf 733:: begin=pc.source; // ->after ^#HH
734:: begin_pos=pc.pos;
1.203 paf 735: // skip analysis = forced literal
1.114 paf 736: continue;
737: }
738: break;
1.1 paf 739: }
1.169 parser 740: break;
1.203 paf 741: }
1.169 parser 742: }
1.113 paf 743: // #comment start skipping
1.204.2.8.2.9 (paf 744:: if(c=='#' && pc.pos.col==1) {
1.112 paf 745: if(end!=begin) {
1.204.2.8.2.9 (paf 746:: if(!pc.string_start)
747:: pc.string_start=begin_pos;
1.112 paf 748: // append piece till #
1.204.2.8.2.9 (paf 749:: pc.string.append_strdup(begin, end-begin);
1.112 paf 750: }
751: // fall into COMMENT lexical state [wait for \n]
1.204.2.8.2.9 (paf 752:: push_LS(pc, LS_USER_COMMENT);
1.175 paf 753: continue;
1.112 paf 754: }
1.204.2.8.2.9 (paf 755:: switch(pc.ls) {
1.10 paf 756:
757: // USER'S = NOT OURS
1.1 paf 758: case LS_USER:
1.204.2.8.2.1 (paf 759:): case LS_NAME_SQUARE_PART: // name.[here].xxx
1.204.2.8.2.9 (paf 760:: if(pc.trim_bof)
1.153 parser 761: switch(c) {
762: case '\n': case ' ': case '\t':
1.204.2.8.2.9 (paf 763:: begin=pc.source;
764:: begin_pos=pc.pos;
1.152 parser 765: continue; // skip it
1.153 parser 766: default:
1.204.2.8.2.9 (paf 767:: pc.trim_bof=false;
1.152 parser 768: }
1.48 paf 769: switch(c) {
770: case '$':
1.204.2.8.2.9 (paf 771:: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 772: RC;
773: case '^':
1.204.2.8.2.9 (paf 774:: push_LS(pc, LS_METHOD_NAME);
1.48 paf 775: RC;
1.166 parser 776: case ']':
1.204.2.8.2.9 (paf 777:: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 778: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.204.2.8.2.9 (paf 779:: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 780: RC;
781: }
1.160 parser 782: break;
1.166 parser 783: case '[': // $name.[co<[>de]
1.204.2.8.2.9 (paf 784:: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 785: lexical_brackets_nestage++;
1.161 parser 786: break;
1.112 paf 787: }
788: break;
789:
790: // #COMMENT
1.194 paf 791: case LS_USER_COMMENT:
1.112 paf 792: if(c=='\n') {
793: // skip comment
1.204.2.8.2.9 (paf 794:: begin=pc.source;
795:: begin_pos=pc.pos;
1.112 paf 796:
1.204.2.8.2.9 (paf 797:: pop_LS(pc);
1.112 paf 798: continue;
1.1 paf 799: }
1.48 paf 800: break;
801:
802: // STRING IN EXPRESSION
1.145 parser 803: case LS_EXPRESSION_STRING_QUOTED:
804: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 805: switch(c) {
806: case '"':
1.145 parser 807: case '\'':
808: if(
1.204.2.8.2.9 (paf 809:: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
810:: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
811:: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 812: RC;
813: }
814: break;
1.48 paf 815: case '$':
1.204.2.8.2.9 (paf 816:: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 817: RC;
818: case '^':
1.204.2.8.2.9 (paf 819:: push_LS(pc, LS_METHOD_NAME);
1.48 paf 820: RC;
1.10 paf 821: }
822: break;
823:
824: // METHOD DEFINITION
825: case LS_DEF_NAME:
1.48 paf 826: switch(c) {
827: case '[':
1.204.2.8.2.9 (paf 828:: pc.ls=LS_DEF_PARAMS;
1.48 paf 829: RC;
830: case '\n':
1.204.2.8.2.9 (paf 831:: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 832: RC;
1.10 paf 833: }
834: break;
1.48 paf 835:
1.10 paf 836: case LS_DEF_PARAMS:
1.48 paf 837: switch(c) {
1.192 paf 838: case '$': // common error
1.193 paf 839: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
840: goto break2;
1.48 paf 841: case ';':
842: RC;
843: case ']':
1.204.2.8.2.9 (paf 844:: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 845: RC;
1.49 paf 846: case '\n': // wrong. bailing out
1.204.2.8.2.9 (paf 847:: pop_LS(pc);
1.48 paf 848: RC;
1.10 paf 849: }
850: break;
1.48 paf 851:
1.10 paf 852: case LS_DEF_LOCALS:
1.48 paf 853: switch(c) {
854: case '[':
855: case ';':
856: RC;
857: case ']':
1.204.2.8.2.9 (paf 858:: pc.ls=LS_DEF_COMMENT;
1.48 paf 859: RC;
860: case '\n': // wrong. bailing out
1.204.2.8.2.9 (paf 861:: pop_LS(pc);
1.48 paf 862: RC;
1.10 paf 863: }
864: break;
1.48 paf 865:
1.10 paf 866: case LS_DEF_COMMENT:
867: if(c=='\n') {
1.204.2.8.2.9 (paf 868:: pop_LS(pc);
1.48 paf 869: RC;
1.37 paf 870: }
871: break;
872:
1.48 paf 873: case LS_DEF_SPECIAL_BODY:
1.175 paf 874: if(c=='\n')
1.48 paf 875: RC;
876: break;
877:
878: // (EXPRESSION)
1.69 paf 879: case LS_VAR_ROUND:
880: case LS_METHOD_ROUND:
1.48 paf 881: switch(c) {
882: case ')':
883: if(--lexical_brackets_nestage==0)
1.204.2.8.2.9 (paf 884:: if(pc.ls==LS_METHOD_ROUND) // method round param ended
885:: pc.ls=LS_METHOD_AFTER; // look for method end
886:: else // pc.ls==LS_VAR_ROUND // variable constructor ended
887:: pop_LS(pc); // return to normal life
1.48 paf 888: RC;
1.194 paf 889: case '#': // comment start skipping
890: if(end!=begin) {
1.204.2.8.2.9 (paf 891:: if(!pc.string_start)
892:: pc.string_start=begin_pos;
1.194 paf 893: // append piece till #
1.204.2.8.2.9 (paf 894:: pc.string.append_strdup(begin, end-begin);
1.194 paf 895: }
896: // fall into COMMENT lexical state [wait for \n]
1.204.2.8.2.9 (paf 897:: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 898: lexical_brackets_nestage=1;
899: continue;
1.48 paf 900: case '$':
1.204.2.8.2.9 (paf 901:: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 902: RC;
903: case '^':
1.204.2.8.2.9 (paf 904:: push_LS(pc, LS_METHOD_NAME);
1.48 paf 905: RC;
906: case '(':
907: lexical_brackets_nestage++;
908: RC;
1.67 paf 909: case '-':
1.204.2.8.2.9 (paf 910:: switch(*pc.source) {
1.127 paf 911: case 'f': // -f
1.67 paf 912: skip_analized=1;
913: result=FEXISTS;
1.127 paf 914: goto break2;
915: case 'd': // -d
916: skip_analized=1;
917: result=DEXISTS;
918: goto break2;
1.191 paf 919: default: // minus
1.67 paf 920: result=c;
1.127 paf 921: goto break2;
922: }
1.67 paf 923: goto break2;
1.173 paf 924: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 925: case '~':
1.48 paf 926: case ';':
927: RC;
1.193 paf 928: case '&': case '|':
1.204.2.8.2.9 (paf 929:: if(*pc.source==c) { // && ||
1.193 paf 930: result=c=='&'?LAND:LOR;
1.67 paf 931: skip_analized=1;
1.58 paf 932: } else
933: result=c;
934: goto break2;
1.193 paf 935: case '!':
1.204.2.8.2.9 (paf 936:: switch(pc.source[0]) {
1.193 paf 937: case '|': // !| !||
938: skip_analized=1;
1.204.2.8.2.9 (paf 939:: if(pc.source[1]=='|') {
1.193 paf 940: skip_analized++;
941: result=LXOR;
942: } else
943: result=NXOR;
944: goto break2;
945: case '=': // !=
946: skip_analized=1;
947: result=NNE;
948: goto break2;
949: }
950: RC;
1.195 paf 951:
952: case '<': // <<, <=, <
1.204.2.8.2.9 (paf 953:: switch(*pc.source) {
1.195 paf 954: case '<': // <[<]
955: skip_analized=1; result=NSL; break;
956: case '=': // <[=]
957: skip_analized=1; result=NLE; break;
958: default: // <[]
959: result=c; break;
960: }
961: goto break2;
962: case '>': // >>, >=, >
1.204.2.8.2.9 (paf 963:: switch(*pc.source) {
1.195 paf 964: case '>': // >[>]
965: skip_analized=1; result=NSR; break;
966: case '=': // >[=]
967: skip_analized=1; result=NGE; break;
968: default: // >[]
969: result=c; break;
970: }
971: goto break2;
972: case '=': // ==
1.204.2.8.2.9 (paf 973:: switch(*pc.source) {
1.195 paf 974: case '=': // =[=]
975: skip_analized=1; result=NEQ; break;
976: default: // =[]
977: result=c; break; // not used now
978: }
1.58 paf 979: goto break2;
1.195 paf 980:
1.48 paf 981: case '"':
1.204.2.8.2.9 (paf 982:: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 983: RC;
984: case '\'':
1.204.2.8.2.9 (paf 985:: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 986: RC;
1.50 paf 987: case 'l': case 'g': case 'e': case 'n':
1.51 paf 988: if(end==begin) // right after whitespace
1.204.2.8.2.9 (paf 989:: if(isspace(pc.source[1])) {
990:: switch(*pc.source) {
1.117 paf 991: // case '?': // ok [and bad cases, yacc would bark at them]
992: case 't': // lt gt [et nt]
993: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
994: skip_analized=1;
995: goto break2;
996: case 'e': // le ge ne [ee]
997: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
998: skip_analized=1;
999: goto break2;
1000: case 'q': // eq [lq gq nq]
1001: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1002: skip_analized=1;
1003: goto break2;
1004: }
1.67 paf 1005: }
1006: break;
1007: case 'i':
1008: if(end==begin) // right after whitespace
1.204.2.8.2.9 (paf 1009:: if(isspace(pc.source[1])) {
1010:: switch(pc.source[0]) {
1.117 paf 1011: case 'n': // in
1.95 paf 1012: skip_analized=1;
1013: result=IN;
1014: goto break2;
1.117 paf 1015: case 's': // is
1.95 paf 1016: skip_analized=1;
1017: result=IS;
1018: goto break2;
1019: }
1.67 paf 1020: }
1021: break;
1022: case 'd':
1023: if(end==begin) // right after whitespace
1.204.2.8.2.9 (paf 1024:: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.67 paf 1025: skip_analized=2;
1026: result=DEF;
1.58 paf 1027: goto break2;
1.50 paf 1028: }
1.48 paf 1029: break;
1030: case ' ': case '\t': case '\n':
1.63 paf 1031: if(end!=begin) { // there were a string after previous operator?
1032: result=0; // return that string
1033: goto break2;
1.48 paf 1034: }
1.63 paf 1035: // that's a leading|traling space or after-operator-space
1036: // ignoring it
1037: // reset piece 'begin' position & line
1.204.2.8.2.9 (paf 1038:: begin=pc.source; // after whitespace char
1039:: begin_pos=pc.pos;
1.48 paf 1040: continue;
1.1 paf 1041: }
1042: break;
1.194 paf 1043: case LS_EXPRESSION_COMMENT:
1044: if(c=='(')
1045: lexical_brackets_nestage++;
1046:
1.204.2.8.2.9 (paf 1047:: switch(*pc.source) {
1.194 paf 1048: case '\n': case ')':
1.204.2.8.2.9 (paf 1049:: if(*pc.source==')')
1.194 paf 1050: if(--lexical_brackets_nestage!=0)
1051: continue;
1052:
1053: // skip comment
1.204.2.8.2.9 (paf 1054:: begin=pc.source;
1055:: begin_pos=pc.pos;
1.194 paf 1056:
1.204.2.8.2.9 (paf 1057:: pop_LS(pc);
1.194 paf 1058: continue;
1059: }
1060: break;
1.1 paf 1061:
1.10 paf 1062: // VARIABLE GET/PUT/WITH
1.166 parser 1063: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1064: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1065: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1066: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1067: if(
1.204.2.8.2.9 (paf 1068:: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1069:: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1070: // name in expr ends also before
1.48 paf 1071: switch(c) {
1.181 paf 1072: // expression minus
1.92 paf 1073: case '-':
1.181 paf 1074: // expression integer division
1075: case '\\':
1.204.2.8.2.9 (paf 1076:: pop_LS(pc);
1.204.2.8.2.1 (paf 1077:): ungetc(pc, last_line_end_col);
1.48 paf 1078: result=EON;
1079: goto break2;
1080: }
1081: }
1.166 parser 1082: if(
1.204.2.8.2.9 (paf 1083:: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1084:: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1085: // name already has ':', stop before next
1086: switch(c) {
1087: case ':':
1.204.2.8.2.9 (paf 1088:: pop_LS(pc);
1.204.2.8.2.1 (paf 1089:): ungetc(pc, last_line_end_col);
1.142 parser 1090: result=EON;
1091: goto break2;
1092: }
1093: }
1.48 paf 1094: switch(c) {
1095: case 0:
1096: case ' ': case '\t': case '\n':
1097: case ';':
1.126 paf 1098: case ']': case '}': case ')':
1099: case '"': case '\'':
1.139 parser 1100: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1101: case '+': case '*': case '/': case '%':
1102: case '&': case '|':
1103: case '=': case '!':
1.99 paf 1104: // common delimiters
1.190 paf 1105: case ',': case '?': case '#':
1.139 parser 1106: // before call
1107: case '^':
1.204.2.8.2.9 (paf 1108:: pop_LS(pc);
1.204.2.8.2.1 (paf 1109:): ungetc(pc, last_line_end_col);
1.13 paf 1110: result=EON;
1.1 paf 1111: goto break2;
1.48 paf 1112: case '[':
1.162 parser 1113: // $name.<[>code]
1.204.2.8.2.9 (paf 1114:: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1115: end[-1]=='$'/*was start of get*/ ||
1116: end[-1]==':'/*was class name delim */ ||
1117: end[-1]=='.'/*was name delim */
1.162 parser 1118: )) {
1.204.2.8.2.9 (paf 1119:: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1120: lexical_brackets_nestage=1;
1121: RC;
1122: }
1.204.2.8.2.9 (paf 1123:: pc.ls=LS_VAR_SQUARE;
1.1 paf 1124: lexical_brackets_nestage=1;
1.48 paf 1125: RC;
1126: case '{':
1127: if(begin==end) { // ${name}, no need of EON, switching LS
1.204.2.8.2.9 (paf 1128:: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1129: } else {
1.204.2.8.2.9 (paf 1130:: pc.ls=LS_VAR_CURLY;
1.48 paf 1131: lexical_brackets_nestage=1;
1132: }
1.69 paf 1133:
1.48 paf 1134: RC;
1135: case '(':
1.204.2.8.2.9 (paf 1136:: pc.ls=LS_VAR_ROUND;
1.1 paf 1137: lexical_brackets_nestage=1;
1.48 paf 1138: RC;
1139: case '.': // name part delim
1140: case '$': // name part subvar
1.160 parser 1141: case ':': // class<:>name
1.166 parser 1142: // go to _WITHOUT_COLON state variant...
1.204.2.8.2.9 (paf 1143:: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1144:: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1145:: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1146:: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1147: // ...stop before next ':'
1.48 paf 1148: RC;
1.1 paf 1149: }
1150: break;
1.48 paf 1151:
1.1 paf 1152: case LS_VAR_NAME_CURLY:
1.48 paf 1153: switch(c) {
1.162 parser 1154: case '[':
1.166 parser 1155: // ${name.<[>code]}
1.204.2.8.2.9 (paf 1156:: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1157: lexical_brackets_nestage=1;
1158: RC;
1.48 paf 1159: case '}': // ${name} finished, restoring LS
1.204.2.8.2.9 (paf 1160:: pop_LS(pc);
1.48 paf 1161: RC;
1162: case '.': // name part delim
1163: case '$': // name part subvar
1164: case ':': // ':name' or 'class:name'
1165: RC;
1.1 paf 1166: }
1167: break;
1.48 paf 1168:
1169: case LS_VAR_SQUARE:
1170: switch(c) {
1171: case '$':
1.204.2.8.2.9 (paf 1172:: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1173: RC;
1174: case '^':
1.204.2.8.2.9 (paf 1175:: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1176: RC;
1177: case ']':
1.1 paf 1178: if(--lexical_brackets_nestage==0) {
1.204.2.8.2.9 (paf 1179:: pop_LS(pc);
1.48 paf 1180: RC;
1.1 paf 1181: }
1.48 paf 1182: break;
1183: case ';': // operator_or_fmt;value delim
1184: RC;
1185: case '[':
1186: lexical_brackets_nestage++;
1187: break;
1.1 paf 1188: }
1189: break;
1.48 paf 1190:
1.1 paf 1191: case LS_VAR_CURLY:
1.48 paf 1192: switch(c) {
1193: case '$':
1.204.2.8.2.9 (paf 1194:: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1195: RC;
1196: case '^':
1.204.2.8.2.9 (paf 1197:: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1198: RC;
1199: case '}':
1.1 paf 1200: if(--lexical_brackets_nestage==0) {
1.204.2.8.2.9 (paf 1201:: pop_LS(pc);
1.48 paf 1202: RC;
1.1 paf 1203: }
1.48 paf 1204: break;
1205: case '{':
1.1 paf 1206: lexical_brackets_nestage++;
1.48 paf 1207: break;
1208: }
1.1 paf 1209: break;
1210:
1.10 paf 1211: // METHOD CALL
1.1 paf 1212: case LS_METHOD_NAME:
1.48 paf 1213: switch(c) {
1214: case '[':
1.166 parser 1215: // ^name.<[>code].xxx
1.204.2.8.2.9 (paf 1216:: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1217: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1218: end[-1]==':'/*was class name delim */ ||
1219: end[-1]=='.'/*was name delim */
1.162 parser 1220: )) {
1.204.2.8.2.9 (paf 1221:: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1222: lexical_brackets_nestage=1;
1223: RC;
1224: }
1.204.2.8.2.9 (paf 1225:: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1226: lexical_brackets_nestage=1;
1.48 paf 1227: RC;
1228: case '{':
1.204.2.8.2.9 (paf 1229:: pc.ls=LS_METHOD_CURLY;
1.1 paf 1230: lexical_brackets_nestage=1;
1.48 paf 1231: RC;
1.69 paf 1232: case '(':
1.204.2.8.2.9 (paf 1233:: pc.ls=LS_METHOD_ROUND;
1.69 paf 1234: lexical_brackets_nestage=1;
1235: RC;
1.48 paf 1236: case '.': // name part delim
1237: case '$': // name part subvar
1238: case ':': // ':name' or 'class:name'
1.170 parser 1239: case '^': // ^abc^xxx wrong. bailing out
1240: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.48 paf 1241: RC;
1.1 paf 1242: }
1243: break;
1.48 paf 1244:
1245: case LS_METHOD_SQUARE:
1246: switch(c) {
1247: case '$':
1.204.2.8.2.9 (paf 1248:: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1249: RC;
1250: case '^':
1.204.2.8.2.9 (paf 1251:: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1252: RC;
1253: case ';': // param delim
1254: RC;
1255: case ']':
1.1 paf 1256: if(--lexical_brackets_nestage==0) {
1.204.2.8.2.9 (paf 1257:: pc.ls=LS_METHOD_AFTER;
1.48 paf 1258: RC;
1.1 paf 1259: }
1.48 paf 1260: break;
1261: case '[':
1.1 paf 1262: lexical_brackets_nestage++;
1.48 paf 1263: break;
1264: }
1.1 paf 1265: break;
1.48 paf 1266:
1.1 paf 1267: case LS_METHOD_CURLY:
1.48 paf 1268: switch(c) {
1269: case '$':
1.204.2.8.2.9 (paf 1270:: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1271: RC;
1272: case '^':
1.204.2.8.2.9 (paf 1273:: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1274: RC;
1275: case ';': // param delim
1.48 paf 1276: RC;
1277: case '}':
1.1 paf 1278: if(--lexical_brackets_nestage==0) {
1.204.2.8.2.9 (paf 1279:: pc.ls=LS_METHOD_AFTER;
1.48 paf 1280: RC;
1.1 paf 1281: }
1.48 paf 1282: break;
1283: case '{':
1.1 paf 1284: lexical_brackets_nestage++;
1.48 paf 1285: break;
1286: }
1.1 paf 1287: break;
1.48 paf 1288:
1.1 paf 1289: case LS_METHOD_AFTER:
1.69 paf 1290: if(c=='[') {/* ][ }[ )[ */
1.204.2.8.2.9 (paf 1291:: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1292: lexical_brackets_nestage=1;
1.48 paf 1293: RC;
1.1 paf 1294: }
1.69 paf 1295: if(c=='{') {/* ]{ }{ ){ */
1.204.2.8.2.9 (paf 1296:: pc.ls=LS_METHOD_CURLY;
1.69 paf 1297: lexical_brackets_nestage=1;
1298: RC;
1299: }
1300: if(c=='(') {/* ]( }( )( */
1.204.2.8.2.9 (paf 1301:: pc.ls=LS_METHOD_ROUND;
1.1 paf 1302: lexical_brackets_nestage=1;
1.48 paf 1303: RC;
1.1 paf 1304: }
1.204.2.8.2.9 (paf 1305:: pop_LS(pc);
1.204.2.8.2.1 (paf 1306:): ungetc(pc, last_line_end_col);
1.13 paf 1307: result=EON;
1.1 paf 1308: goto break2;
1309: }
1.9 paf 1310: if(c==0) {
1.1 paf 1311: result=-1;
1312: break;
1313: }
1314: }
1315:
1316: break2:
1.59 paf 1317: if(end!=begin) { // there is last piece?
1318: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1319: // strip last \n
1.10 paf 1320: end--;
1.137 parser 1321: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1322: end--;
1.59 paf 1323: }
1.204.2.8.2.9 (paf 1324:: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1325:: if(!pc.string_start)
1326:: pc.string_start=begin_pos;
1.59 paf 1327: // append it
1.204.2.8.2.9 (paf 1328:: pc.string.append_strdup(begin, end-begin);
1.30 paf 1329: }
1.59 paf 1330: }
1.204.2.8.2.9 (paf 1331:: if(!pc.string.is_empty()) { // something accumulated?
1.17 paf 1332: // create STRING value: array of OP_VALUE+vstring
1.204.2.8.2.8 (paf 1333:: *lvalp=VL(
1.204.2.8.2.9 (paf 1334:: new VString(*new String(pc.string, String::L_CLEAN)),
1335:: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1336: // new pieces storage
1.204.2.8.2.9 (paf 1337:: pc.string.clear();
1338:: pc.string_start.clear();
1.58 paf 1339: // make current result be pending for next call, return STRING for now
1.204.2.8.2.9 (paf 1340:: pc.pending_state=result; result=STRING;
1.58 paf 1341: }
1.67 paf 1342: if(skip_analized) {
1.204.2.8.2.9 (paf 1343:: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1344: }
1.58 paf 1345: return result;
1.1 paf 1346: }
1347:
1.204.2.8.2.9 (paf 1348:: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1349: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1350: return 1;
1.110 paf 1351: }
1.1 paf 1352:
1.110 paf 1353: static void yyprint(FILE *file, int type, YYSTYPE value) {
1354: if(type==STRING)
1.204.2.8.2.1 (paf 1355:: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1356: }
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