Annotation of parser3/src/main/compile.y, revision 1.204.2.8.2.9
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:
1.204.2.8.2.9! (paf 8:: $Id: compile.y,v 1.204.2.8.2.8 2003/04/02 14:16:18 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:
30: #include "compile_tools.h"
1.8 paf 31: #include "pa_value.h"
1.12 paf 32: #include "pa_request.h"
1.39 paf 33: #include "pa_vobject.h"
1.52 paf 34: #include "pa_vdouble.h"
1.98 paf 35: #include "pa_globals.h"
1.141 parser 36: #include "pa_vvoid.h"
1.200 paf 37: #include "pa_vmethod_frame.h"
1.39 paf 38:
1.97 paf 39: #define USE_CONTROL_METHOD_NAME "USE"
1.1 paf 40:
1.204.2.8.2.9! (paf 41:: static int real_yyerror(Parse_control *pc, char *s);
1.9 paf 42: static void yyprint(FILE *file, int type, YYSTYPE value);
1.125 paf 43: static int yylex(YYSTYPE *lvalp, void *pc);
1.1 paf 44:
45:
1.8 paf 46: // local convinient inplace typecast & var
1.204.2.8 paf 47: #undef PC
1.204.2.8.2.9! (paf 48:: #define PC (*(Parse_control *)pc)
1.204.2.8 paf 49: #undef POOL
1.114 paf 50: #define POOL (*PC.pool)
1.107 paf 51: #ifndef DOXYGEN
1.1 paf 52: %}
53:
54: %pure_parser
55:
1.13 paf 56: %token EON
1.4 paf 57: %token STRING
1.1 paf 58: %token BOGUS
1.55 paf 59:
1.58 paf 60: %token BAD_STRING_COMPARISON_OPERATOR
1.114 paf 61: %token BAD_HEX_LITERAL
1.171 parser 62: %token BAD_METHOD_DECL_START
1.193 paf 63: %token BAD_METHOD_PARAMETER_NAME_CHARACTER
64: %token BAD_MATH_OPERATOR_CHARACTER
1.58 paf 65:
1.59 paf 66: %token LAND "&&"
1.58 paf 67: %token LOR "||"
1.193 paf 68: %token LXOR "!||"
69: %token NXOR "!|"
1.58 paf 70:
71: %token NLE "<="
72: %token NGE ">="
73: %token NEQ "=="
74: %token NNE "!="
1.195 paf 75: %token NSL "<<"
76: %token NSR ">>"
1.58 paf 77:
78: %token SLT "lt"
79: %token SGT "gt"
80: %token SLE "le"
81: %token SGE "ge"
82: %token SEQ "eq"
83: %token SNE "ne"
84:
1.67 paf 85: %token DEF "def"
86: %token IN "in"
87: %token FEXISTS "-f"
1.127 paf 88: %token DEXISTS "-d"
1.95 paf 89: %token IS "is"
1.67 paf 90:
1.57 paf 91: /* logical */
1.193 paf 92: %left "!||"
1.57 paf 93: %left "||"
94: %left "&&"
1.131 paf 95: %left '<' '>' "<=" ">=" "lt" "gt" "le" "ge"
96: %left "==" "!=" "eq" "ne"
97: %left "is" "def" "in" "-f" "-d"
1.57 paf 98:
99: /* bitwise */
1.193 paf 100: %left "!|"
1.131 paf 101: %left '|'
102: %left '&'
1.202 paf 103: %left "<<" ">>"
1.57 paf 104:
1.56 paf 105: /* numerical */
1.202 paf 106: %left '+' '-'
107: %left '*' '/' '\\' '%'
108: %left NUNARY /* unary - + */
109:
110: /* out-of-group */
111: %left '~' /* bitwise */
112: %left '!' /* logical */
1.1 paf 113:
114: %%
1.195 paf 115: all:
1.10 paf 116: one_big_piece {
1.204.2.8.2.2 (paf 117:: Method& method=*new Method(/*main_method_name, */Method::CT_ANY,
1.81 paf 118: 0, 0, /*min, max numbered_params_count*/
1.204.2.8.2.1 (paf 119:: 0/*param_names*/, 0/*local_names*/,
120:: $1/*parser_code*/, 0/*native_code*/);
1.204.2.2 paf 121: PC.cclass->add_method(main_method_name, method);
1.10 paf 122: }
123: | methods;
124:
125: methods: method | methods method;
126: one_big_piece: maybe_codes;
127:
1.34 paf 128: method: control_method | code_method;
129:
130: control_method: '@' STRING '\n'
1.132 paf 131: maybe_control_strings {
1.204.2.8.2.1 (paf 132:: const String& command=*LA2S(*$2);
1.34 paf 133: YYSTYPE strings_code=$4;
1.204.2.2 paf 134: if(strings_code->count()<1*2) {
1.114 paf 135: strcpy(PC.error, "@");
1.204.2.8.2.1 (paf 136:: strcat(PC.error, command.cstr());
1.114 paf 137: strcat(PC.error, " is empty");
1.37 paf 138: YYERROR;
139: }
1.204.2.8.2.1 (paf 140:: if(command==CLASS_NAME) {
1.188 paf 141: if(PC.cclass->base_class()) { // already changed from default?
1.114 paf 142: strcpy(PC.error, "class already have a name '");
1.204.2.8.2.1 (paf 143:: strncat(PC.error, PC.cclass->name().cstr(), 100);
1.114 paf 144: strcat(PC.error, "'");
1.73 paf 145: YYERROR;
146: }
1.204.2.2 paf 147: if(strings_code->count()==1*2) {
1.73 paf 148: // new class' name
1.204.2.8.2.1 (paf 149:: const String& name=*LA2S(*strings_code);
1.73 paf 150: // creating the class
1.204.2.8.2.1 (paf 151:: VStateless_class* cclass=new VClass;
152:: PC.cclass=cclass;
1.204.2.2 paf 153: PC.cclass->set_name(name);
1.73 paf 154: // append to request's classes
1.204.2.8.2.1 (paf 155:: PC.request.classes().put(name, cclass);
1.73 paf 156: } else {
1.114 paf 157: strcpy(PC.error, "@"CLASS_NAME" must contain sole name");
1.34 paf 158: YYERROR;
159: }
1.204.2.8.2.1 (paf 160:: } else if(command==USE_CONTROL_METHOD_NAME) {
1.204.2.8.2.5 (paf 161:: for(size_t i=0; i<strings_code->count(); i+=2)
1.204.2.8.2.1 (paf 162:: PC.request.use_file(PC.request.main_class, *LA2S(*strings_code, i));
163:: } else if(command==BASE_NAME) {
1.188 paf 164: if(PC.cclass->base_class()) { // already changed from default?
1.130 paf 165: strcpy(PC.error, "class already have a base '");
1.204.2.8.2.1 (paf 166:: strncat(PC.error, PC.cclass->base_class()->name().cstr(), 100);
1.130 paf 167: strcat(PC.error, "'");
168: YYERROR;
169: }
1.204.2.2 paf 170: if(strings_code->count()==1*2) {
1.204.2.8.2.1 (paf 171:: const String& base_name=*LA2S(*strings_code);
172:: if(Value* base_class_value=PC.request.classes().get(base_name)) {
1.204.2.2 paf 173: // @CLASS == @BASE sanity check
1.204.2.3 paf 174: if(VStateless_class *base_class=base_class_value->get_class()) {
1.204.2.5 paf 175: if(PC.cclass==base_class) {
1.204.2.3 paf 176: strcpy(PC.error, "@"CLASS_NAME" equals @"BASE_NAME);
177: YYERROR;
178: }
179: PC.cclass->get_class()->set_base(base_class);
180: } else { // they asked to derive from a class without methods ['env' & co]
1.204.2.8.2.1 (paf 181:: strcpy(PC.error, base_name.cstr());
1.204.2.3 paf 182: strcat(PC.error, ": you can not derive from this class in @"BASE_NAME);
1.204.2.2 paf 183: YYERROR;
184: }
185: } else {
1.204.2.8.2.1 (paf 186:: strcpy(PC.error, base_name.cstr());
1.130 paf 187: strcat(PC.error, ": undefined class in @"BASE_NAME);
1.73 paf 188: YYERROR;
189: }
1.34 paf 190: } else {
1.130 paf 191: strcpy(PC.error, "@"BASE_NAME" must contain sole name");
1.34 paf 192: YYERROR;
193: }
1.130 paf 194: } else {
195: strcpy(PC.error, "'");
1.204.2.8.2.1 (paf 196:: strncat(PC.error, command.cstr(), MAX_STRING/2);
1.130 paf 197: strcat(PC.error, "' invalid special name. valid names are "
198: "'"CLASS_NAME"', '"USE_CONTROL_METHOD_NAME"' and '"BASE_NAME"'");
199: YYERROR;
1.34 paf 200: }
201: };
1.132 paf 202: maybe_control_strings: empty | control_strings;
1.204.2.2 paf 203: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2) };
1.37 paf 204: control_string: maybe_string '\n';
205: maybe_string: empty | STRING;
1.34 paf 206:
207: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n'
1.10 paf 208: maybe_codes {
1.204.2.8.2.1 (paf 209:: const String& name=*LA2S(*$2);
1.10 paf 210:
211: YYSTYPE params_names_code=$3;
1.204.2.8.2.3 (paf 212:: ArrayString* params_names=0;
1.204.2.2 paf 213: if(int size=params_names_code->count()) {
1.204.2.8.2.1 (paf 214:: params_names=new ArrayString;
1.75 paf 215: for(int i=0; i<size; i+=2)
1.204.2.2 paf 216: *params_names+=LA2S(*params_names_code, i);
1.75 paf 217: }
1.10 paf 218:
219: YYSTYPE locals_names_code=$4;
1.204.2.8.2.3 (paf 220:: ArrayString* locals_names=0;
1.204.2.2 paf 221: if(int size=locals_names_code->count()) {
1.204.2.8.2.1 (paf 222:: locals_names=new ArrayString;
1.75 paf 223: for(int i=0; i<size; i+=2)
1.204.2.2 paf 224: *locals_names+=LA2S(*locals_names_code, i);
1.75 paf 225: }
1.10 paf 226:
1.204.2.8.2.1 (paf 227:: Method& method=*new Method(
1.204.2.8.2.2 (paf 228:: //name,
1.122 paf 229: Method::CT_ANY,
1.81 paf 230: 0, 0/*min,max numbered_params_count*/,
1.76 paf 231: params_names, locals_names,
1.204.2.8.2.1 (paf 232:: $7, 0);
1.204.2.2 paf 233: PC.cclass->add_method(name, method);
1.8 paf 234: };
1.10 paf 235:
236: maybe_bracketed_strings: empty | bracketed_maybe_strings;
237: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2};
238: maybe_strings: empty | strings;
1.204.2.2 paf 239: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3) };
1.10 paf 240:
241: maybe_comment: empty | STRING;
1.1 paf 242:
243: /* codes */
244:
1.10 paf 245: maybe_codes: empty | codes;
246:
1.204.2.2 paf 247: codes: code | codes code { $$=$1; P(*$$, *$2) };
1.81 paf 248: code: write_string | action;
1.149 parser 249: action: get | put | call;
1.1 paf 250:
251: /* get */
252:
1.64 paf 253: get: get_value {
1.184 paf 254: $$=$1; /* stack: resulting value */
1.204.2.2 paf 255: changetail_or_append(*$$,
1.186 paf 256: OP_GET_ELEMENT, false, /*->*/OP_GET_ELEMENT__WRITE,
257: /*or */OP_WRITE_VALUE
1.184 paf 258: ); /* value=pop; wcontext.write(value) */
1.1 paf 259: };
1.163 parser 260: get_value: '$' get_name_value { $$=$2 };
1.64 paf 261: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.1 paf 262: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2 };
1.44 paf 263: name_without_curly_rdive:
264: name_without_curly_rdive_read
265: | name_without_curly_rdive_class;
1.19 paf 266: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.204.2.2 paf 267: $$=N();
1.204.2.8.2.1 (paf 268:: ArrayOperation* diving_code=$1;
269:: const String* first_name=LA2S(*diving_code);
1.179 paf 270: // self.xxx... -> xxx...
271: // OP_VALUE+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 272: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.204.2.2 paf 273: O(*$$, OP_WITH_SELF); /* stack: starting context */
274: P(*$$, *diving_code,
1.22 paf 275: /* skip over... */
1.204.2.2 paf 276: diving_code->count()>=3?3/*OP_VALUE+string+OP_GET_ELEMENTx*/:2/*OP_+string*/);
1.22 paf 277: } else {
1.204.2.2 paf 278: O(*$$, OP_WITH_READ); /* stack: starting context */
1.179 paf 279:
1.201 paf 280: // ^if ELEMENT -> ^if ELEMENT_OR_OPERATOR
281: // OP_VALUE+string+OP_GET_ELEMENT. -> OP_VALUE+string+OP_GET_ELEMENT_OR_OPERATOR.
1.204.2.2 paf 282: if(PC.in_call_value && diving_code->count()==3)
1.204.2.8.2.6 (paf 283:: diving_code->put(2, OP_GET_ELEMENT_OR_OPERATOR);
1.204.2.2 paf 284: P(*$$, *diving_code);
1.22 paf 285: }
286: /* diving code; stack: current context */
1.1 paf 287: };
1.204.2.2 paf 288: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2) };
289: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2) };
1.1 paf 290:
291: /* put */
292:
1.81 paf 293: put: '$' name_expr_wdive construct {
1.20 paf 294: $$=$2; /* stack: context,name */
1.204.2.2 paf 295: P(*$$, *$3); /* stack: context,name,constructor_value */
1.20 paf 296: };
1.44 paf 297: name_expr_wdive:
1.157 parser 298: name_expr_wdive_root
299: | name_expr_wdive_write
1.44 paf 300: | name_expr_wdive_class;
1.157 parser 301: name_expr_wdive_root: name_expr_dive_code {
1.204.2.2 paf 302: $$=N();
1.204.2.8.2.1 (paf 303:: ArrayOperation* diving_code=$1;
304:: const String* first_name=LA2S(*diving_code);
1.179 paf 305: // $self.xxx... -> $xxx...
306: // OP_VALUE+string+OP_GET_ELEMENT+... -> OP_WITH_SELF+...
1.85 paf 307: if(first_name && *first_name==SELF_ELEMENT_NAME) {
1.204.2.2 paf 308: O(*$$, OP_WITH_SELF); /* stack: starting context */
309: P(*$$, *diving_code,
1.23 paf 310: /* skip over... */
1.204.2.2 paf 311: diving_code->count()>=3?3/*OP_VALUE+string+OP_GET_ELEMENTx*/:2/*OP_+string*/);
1.23 paf 312: } else {
1.204.2.2 paf 313: O(*$$, OP_WITH_ROOT); /* stack: starting context */
314: P(*$$, *diving_code);
1.23 paf 315: }
316: /* diving code; stack: current context */
1.156 parser 317: };
1.157 parser 318: name_expr_wdive_write: '.' name_expr_dive_code {
1.204.2.2 paf 319: $$=N();
320: O(*$$, OP_WITH_WRITE); /* stack: starting context */
321: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 322: };
1.204.2.2 paf 323: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2) };
1.20 paf 324:
1.149 parser 325: construct:
1.163 parser 326: construct_square
327: | construct_round
328: | construct_curly
1.149 parser 329: ;
330: construct_square: '[' any_constructor_code_value ']' {
331: // stack: context, name
332: $$=$2; // stack: context, name, value
1.204.2.2 paf 333: O(*$$, OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 334: }
335: ;
1.149 parser 336: construct_round: '(' expr_value ')' {
1.204.2.2 paf 337: $$=N();
338: O(*$$, OP_PREPARE_TO_EXPRESSION);
1.149 parser 339: // stack: context, name
1.204.2.2 paf 340: P(*$$, *$2); // stack: context, name, value
341: O(*$$, OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 342: }
1.52 paf 343: ;
1.149 parser 344: construct_curly: '{' maybe_codes '}' {
345: // stack: context, name
1.204.2.2 paf 346: $$=N();
347: OA(*$$, OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 348: };
349:
1.55 paf 350: any_constructor_code_value:
1.157 parser 351: void_value /* optimized $var[] case */
1.52 paf 352: | STRING /* optimized $var[STRING] case */
1.55 paf 353: | constructor_code_value /* $var[something complex] */
1.1 paf 354: ;
1.55 paf 355: constructor_code_value: constructor_code {
1.204.2.2 paf 356: $$=N();
357: OA(*$$, OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 358: /* some code that writes to that context */
359: /* context=pop; stack: context.value() */
1.1 paf 360: };
1.55 paf 361: constructor_code: codes__excluding_sole_str_literal;
1.204.2.2 paf 362: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2) };
1.27 paf 363:
1.1 paf 364: /* call */
365:
1.66 paf 366: call: call_value {
367: $$=$1; /* stack: value */
1.204.2.2 paf 368: changetail_or_append(*$$,
1.186 paf 369: OP_CALL, true, /*->*/ OP_CALL__WRITE,
370: /*or */OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.66 paf 371: };
1.177 paf 372: call_value: '^' {
1.180 paf 373: PC.in_call_value=true;
1.177 paf 374: }
375: call_name {
1.180 paf 376: PC.in_call_value=false;
1.177 paf 377: }
1.154 parser 378: store_params EON { /* ^field.$method{vasya} */
379: $$=$3; /* with_xxx,diving code; stack: context,method_junction */
1.123 paf 380:
1.154 parser 381: YYSTYPE params_code=$5;
1.204.2.2 paf 382: if(params_code->count()==3) { // probably [] case. [OP_VALUE + Void + STORE_PARAM]
1.204.2.8.2.1 (paf 383:: if(Value* value=LA2V(*params_code)) // it is OP_VALUE + value?
1.140 parser 384: if(!value->is_defined()) // value is VVoid?
1.204.2.8.2.1 (paf 385:: params_code=0; // ^zzz[] case. don't append lone empty param.
1.186 paf 386: }
387: /* stack: context, method_junction */
1.204.2.2 paf 388: OA(*$$, OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
1.1 paf 389: };
390:
1.43 paf 391: call_name: name_without_curly_rdive;
1.38 paf 392:
1.204.2.2 paf 393: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2) };
1.69 paf 394: store_param:
395: store_square_param
396: | store_round_param
397: | store_curly_param
1.31 paf 398: ;
1.123 paf 399: store_square_param: '[' store_code_param_parts ']' {$$=$2};
1.69 paf 400: store_round_param: '(' store_expr_param_parts ')' {$$=$2};
1.94 paf 401: store_curly_param: '{' store_curly_param_parts '}' {$$=$2};
1.69 paf 402: store_code_param_parts:
403: store_code_param_part
1.204.2.2 paf 404: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 405: ;
406: store_expr_param_parts:
407: store_expr_param_part
1.204.2.2 paf 408: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3) }
1.69 paf 409: ;
1.94 paf 410: store_curly_param_parts:
411: store_curly_param_part
1.204.2.2 paf 412: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3) }
1.94 paf 413: ;
1.120 paf 414: store_code_param_part: code_param_value {
1.32 paf 415: $$=$1;
1.204.2.2 paf 416: O(*$$, OP_STORE_PARAM);
1.120 paf 417: };
1.69 paf 418: store_expr_param_part: write_expr_value {
1.204.2.2 paf 419: $$=N();
420: OA(*$$, OP_EXPR_CODE__STORE_PARAM, $1);
1.69 paf 421: };
1.94 paf 422: store_curly_param_part: maybe_codes {
1.204.2.2 paf 423: $$=N();
424: OA(*$$, OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 425: };
1.120 paf 426: code_param_value:
1.157 parser 427: void_value /* optimized [;...] case */
1.120 paf 428: | STRING /* optimized [STRING] case */
429: | constructor_code_value /* [something complex] */
430: ;
1.90 paf 431: write_expr_value: expr_value {
1.204.2.2 paf 432: $$=N();
433: O(*$$, OP_PREPARE_TO_EXPRESSION);
434: P(*$$, *$1);
435: O(*$$, OP_WRITE_EXPR_RESULT);
1.69 paf 436: };
1.1 paf 437:
438: /* name */
439:
1.204.2.2 paf 440: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2) };
1.1 paf 441:
1.204.2.2 paf 442: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2) };
1.1 paf 443: name_step: name_advance1 '.';
444: name_advance1: name_expr_value {
1.177 paf 445: // we know that name_advance1 not called from ^xxx context
446: // so we'll not check for operator call possibility as we do in name_advance2
447:
1.1 paf 448: /* stack: context */
449: $$=$1; /* stack: context,name */
1.204.2.2 paf 450: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 451: };
452: name_advance2: name_expr_value {
453: /* stack: context */
454: $$=$1; /* stack: context,name */
1.204.2.2 paf 455: O(*$$, OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 456: }
1.4 paf 457: | STRING BOGUS
1.1 paf 458: ;
459: name_expr_value:
1.4 paf 460: STRING /* subname_is_const */
1.1 paf 461: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 462: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 463: | name_square_code_value /* [codes] */
1.1 paf 464: ;
465: name_expr_subvar_value: '$' subvar_ref_name_rdive {
466: $$=$2;
1.204.2.2 paf 467: O(*$$, OP_GET_ELEMENT);
1.1 paf 468: };
1.4 paf 469: name_expr_with_subvar_value: STRING subvar_get_writes {
1.204.2.8.2.1 (paf 470:: ArrayOperation* code;
1.183 paf 471: {
1.204.2.2 paf 472: change_string_literal_to_write_string_literal(*(code=$1));
473: P(*code, *$2);
1.183 paf 474: }
1.204.2.2 paf 475: $$=N();
476: OA(*$$, OP_STRING_POOL, code);
1.1 paf 477: };
1.166 parser 478: name_square_code_value: '[' codes ']' {
1.204.2.2 paf 479: $$=N();
480: OA(*$$, OP_OBJECT_POOL, $2); /* stack: empty write context */
1.183 paf 481: /* some code that writes to that context */
482: /* context=pop; stack: context.value() */
1.160 parser 483: };
1.154 parser 484: subvar_ref_name_rdive: STRING {
1.204.2.2 paf 485: $$=N();
486: O(*$$, OP_WITH_READ);
487: P(*$$, *$1);
1.1 paf 488: };
1.204.2.2 paf 489: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2) };
1.1 paf 490: subvar__get_write: '$' subvar_ref_name_rdive {
491: $$=$2;
1.204.2.2 paf 492: O(*$$, OP_GET_ELEMENT__WRITE);
1.42 paf 493: };
494:
1.154 parser 495: class_prefix:
496: class_static_prefix
497: | class_constructor_prefix
498: ;
1.155 parser 499: class_static_prefix: STRING ':' {
500: $$=$1; // stack: class name string
1.204.2.8.2.8 (paf 501:: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
1.204.2.3 paf 502: if(VStateless_class* base=PC.cclass->base_class()) {
1.204.2.2 paf 503: change_string_literal_value(*$$, base->name());
1.189 paf 504: } else {
505: strcpy(PC.error, "no base class declared");
506: YYERROR;
507: }
508: }
1.204.2.2 paf 509: O(*$$, OP_GET_CLASS);
1.155 parser 510: };
511: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 512: $$=$1;
1.180 paf 513: if(!PC.in_call_value) {
1.154 parser 514: strcpy(PC.error, ":: not allowed here");
515: YYERROR;
516: }
1.204.2.2 paf 517: O(*$$, OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 518: };
519:
1.53 paf 520:
1.56 paf 521: /* expr */
1.53 paf 522:
1.81 paf 523: expr_value: expr {
1.182 paf 524: // see OP_PREPARE_TO_EXPRESSION!!
1.204.2.2 paf 525: if(($$=$1)->count()==2) // only one string literal in there?
526: change_string_literal_to_double_literal(*$$); // make that string literal Double
1.62 paf 527: };
1.56 paf 528: expr:
1.62 paf 529: STRING
1.64 paf 530: | get_value
1.66 paf 531: | call_value
1.64 paf 532: | '"' string_inside_quotes_value '"' { $$ = $2; }
1.145 parser 533: | '\'' string_inside_quotes_value '\'' { $$ = $2; }
1.60 paf 534: | '(' expr ')' { $$ = $2; }
535: /* stack: operand // stack: @operand */
1.204.2.2 paf 536: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP_NEG) }
1.202 paf 537: | '+' expr %prec NUNARY { $$=$2 }
1.204.2.2 paf 538: | '~' expr { $$=$2; O(*$$, OP_INV) }
539: | '!' expr { $$=$2; O(*$$, OP_NOT) }
540: | "def" expr { $$=$2; O(*$$, OP_DEF) }
541: | "in" expr { $$=$2; O(*$$, OP_IN) }
542: | "-f" expr { $$=$2; O(*$$, OP_FEXISTS) }
543: | "-d" expr { $$=$2; O(*$$, OP_DEXISTS) }
1.60 paf 544: /* stack: a,b // stack: a@b */
1.204.2.2 paf 545: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP_SUB) }
546: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP_ADD) }
547: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MUL) }
548: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP_DIV) }
549: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP_MOD) }
550: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP_INTDIV) }
551: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SL) }
552: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_SR) }
553: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_AND) }
554: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_OR) }
555: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP_BIN_XOR) }
556: | expr "&&" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_AND) }
557: | expr "||" expr { $$=$1; OA(*$$, OP_NESTED_CODE, $3); O(*$$, OP_LOG_OR) }
558: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP_LOG_XOR) }
559: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LT) }
560: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GT) }
561: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_LE) }
562: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_GE) }
563: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_EQ) }
564: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP_NUM_NE) }
565: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LT) }
566: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GT) }
567: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_LE) }
568: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_GE) }
569: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_EQ) }
570: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP_STR_NE) }
571: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP_IS) }
1.56 paf 572: ;
1.55 paf 573:
1.65 paf 574: string_inside_quotes_value: maybe_codes {
1.204.2.2 paf 575: $$=N();
576: OA(*$$, OP_STRING_POOL, $1); /* stack: empty write context */
1.183 paf 577: /* some code that writes to that context */
578: /* context=pop; stack: context.get_string() */
1.53 paf 579: };
1.1 paf 580:
1.27 paf 581: /* basics */
1.1 paf 582:
1.81 paf 583: write_string: STRING {
1.102 paf 584: // optimized from OP_STRING+OP_WRITE_VALUE to OP_STRING__WRITE
1.204.2.2 paf 585: change_string_literal_to_write_string_literal(*($$=$1))
1.54 paf 586: };
587:
1.204.2.8.2.8 (paf 588:: void_value: /* empty */ { $$=VL(new VVoid(), 0, 0, 0) };
1.204.2.2 paf 589: empty: /* empty */ { $$=N() };
1.1 paf 590:
591: %%
1.105 paf 592: #endif
1.1 paf 593:
594: /*
595: 000$111(2222)00
596: 000$111{3333}00
1.9 paf 597: $,^: push,=0
1.1 paf 598: 1:( { break=pop
599: 2:( ) pop
600: 3:{ } pop
601:
602: 000^111(2222)4444{33333}4000
1.9 paf 603: $,^: push,=0
1.1 paf 604: 1:( { break=pop
605: 2:( )=4
606: 3:{ }=4
607: 4:[^({]=pop
608: */
609:
1.204.2.8.2.9! (paf 610:: static int yylex(YYSTYPE *lvalp, void *apc) {
! 611:: register Parse_control& pc=*static_cast<Parse_control*>(apc);
! 612::
! 613:: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 614: #define RC {result=c; goto break2; }
1.1 paf 615:
1.204.2.8.2.9! (paf 616:: register int c;
! 617:: int result;
1.1 paf 618:
1.204.2.8.2.9! (paf 619:: if(pc.pending_state) {
! 620:: result=pc.pending_state;
! 621:: pc.pending_state=0;
1.1 paf 622: return result;
623: }
624:
1.204.2.8.2.9! (paf 625:: const char *begin=pc.source;
! 626:: Pos begin_pos=pc.pos;
1.91 paf 627: const char *end;
1.67 paf 628: int skip_analized=0;
1.50 paf 629: while(true) {
1.204.2.8.2.9! (paf 630:: c=*(end=(pc.source++));
! 631:: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 632:
1.4 paf 633: if(c=='\n') {
1.204.2.8.2.9! (paf 634:: pc.pos.line++;
! 635:: pc.pos.col=0;
1.10 paf 636: } else
1.204.2.8.2.9! (paf 637:: pc.pos.col++;
1.73 paf 638:
1.204.2.8.2.9! (paf 639:: if(c=='@' && pc.pos.col==0+1) {
! 640:: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 641: // @SPECIAL
642: // ...
643: // @<here =
1.204.2.8.2.9! (paf 644:: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 645: } // continuing checks
1.204.2.8.2.9! (paf 646:: if(pc.ls==LS_USER) {
! 647:: push_LS(pc, LS_DEF_NAME);
1.171 parser 648: RC;
1.175 paf 649: } else // @ in first column inside some code [when could that be?]
1.171 parser 650: result=BAD_METHOD_DECL_START;
651: goto break2;
1.203 paf 652: } else if(c=='^') {
1.204.2.8.2.9! (paf 653:: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 654: // handle after-method situation
1.204.2.8.2.9! (paf 655:: pop_LS(pc);
1.203 paf 656: result=EON;
657: skip_analized=-1; // return to punctuation afterwards to assure it's literality
658: goto break2;
659: }
1.204.2.8.2.9! (paf 660:: switch(pc.ls) {
1.169 parser 661: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
662: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
663: case LS_VAR_NAME_SIMPLE_WITH_COLON:
664: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
665: case LS_VAR_NAME_CURLY:
666: case LS_METHOD_NAME:
1.194 paf 667: case LS_USER_COMMENT:
1.169 parser 668: case LS_DEF_COMMENT:
669: // no literals in names, please
670: break;
671: default:
1.204.2.8.2.9! (paf 672:: switch(*pc.source) {
1.165 parser 673: // ^escaping some punctuators
1.48 paf 674: case '^': case '$': case ';':
1.126 paf 675: case '(': case ')':
1.48 paf 676: case '[': case ']':
677: case '{': case '}':
1.172 parser 678: case '"': case ':':
1.40 paf 679: if(end!=begin) {
1.204.2.8.2.9! (paf 680:: if(!pc.string_start)
! 681:: pc.string_start=begin_pos;
1.40 paf 682: // append piece till ^
1.204.2.8.2.9! (paf 683:: pc.string.append_strdup(begin, end-begin);
1.40 paf 684: }
1.63 paf 685: // reset piece 'begin' position & line
1.204.2.8.2.9! (paf 686:: begin=pc.source; // ->punctuation
! 687:: begin_pos=pc.pos;
1.203 paf 688: // skip over _ after ^
1.204.2.8.2.9! (paf 689:: pc.source++; pc.pos.col++;
1.203 paf 690: // skip analysis = forced literal
691: continue;
1.114 paf 692:
693: // converting ^#HH into char(hex(HH))
694: case '#':
695: if(end!=begin) {
1.204.2.8.2.9! (paf 696:: if(!pc.string_start)
! 697:: pc.string_start=begin_pos;
1.114 paf 698: // append piece till ^
1.204.2.8.2.9! (paf 699:: pc.string.append_strdup(begin, end-begin);
1.114 paf 700: }
701: // #HH ?
1.204.2.8.2.9! (paf 702:: if(pc.source[0]=='#' && pc.source[1] && pc.source[2]) {
1.204.2.8.2.1 (paf 703:: char c=
1.204.2.8.2.9! (paf 704:: hex_value[(unsigned char)pc.source[1]]*0x10+
! 705:: hex_value[(unsigned char)pc.source[2]];
1.204.2.8.2.1 (paf 706:: if(c==0) {
1.114 paf 707: result=BAD_HEX_LITERAL;
708: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
709: }
710: // append char(hex(HH))
1.204.2.8.2.9! (paf 711:: pc.string.append(c);
1.114 paf 712: // skip over ^#HH
1.204.2.8.2.9! (paf 713:: pc.source+=3;
! 714:: pc.pos.col+=3;
1.114 paf 715: // reset piece 'begin' position & line
1.204.2.8.2.9! (paf 716:: begin=pc.source; // ->after ^#HH
! 717:: begin_pos=pc.pos;
1.203 paf 718: // skip analysis = forced literal
1.114 paf 719: continue;
720: }
721: break;
1.1 paf 722: }
1.169 parser 723: break;
1.203 paf 724: }
1.169 parser 725: }
1.113 paf 726: // #comment start skipping
1.204.2.8.2.9! (paf 727:: if(c=='#' && pc.pos.col==1) {
1.112 paf 728: if(end!=begin) {
1.204.2.8.2.9! (paf 729:: if(!pc.string_start)
! 730:: pc.string_start=begin_pos;
1.112 paf 731: // append piece till #
1.204.2.8.2.9! (paf 732:: pc.string.append_strdup(begin, end-begin);
1.112 paf 733: }
734: // fall into COMMENT lexical state [wait for \n]
1.204.2.8.2.9! (paf 735:: push_LS(pc, LS_USER_COMMENT);
1.175 paf 736: continue;
1.112 paf 737: }
1.204.2.8.2.9! (paf 738:: switch(pc.ls) {
1.10 paf 739:
740: // USER'S = NOT OURS
1.1 paf 741: case LS_USER:
1.166 parser 742: case LS_NAME_SQUARE_PART: // name.[here].xxx
1.204.2.8.2.9! (paf 743:: if(pc.trim_bof)
1.153 parser 744: switch(c) {
745: case '\n': case ' ': case '\t':
1.204.2.8.2.9! (paf 746:: begin=pc.source;
! 747:: begin_pos=pc.pos;
1.152 parser 748: continue; // skip it
1.153 parser 749: default:
1.204.2.8.2.9! (paf 750:: pc.trim_bof=false;
1.152 parser 751: }
1.48 paf 752: switch(c) {
753: case '$':
1.204.2.8.2.9! (paf 754:: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 755: RC;
756: case '^':
1.204.2.8.2.9! (paf 757:: push_LS(pc, LS_METHOD_NAME);
1.48 paf 758: RC;
1.166 parser 759: case ']':
1.204.2.8.2.9! (paf 760:: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 761: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.204.2.8.2.9! (paf 762:: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 763: RC;
764: }
1.160 parser 765: break;
1.166 parser 766: case '[': // $name.[co<[>de]
1.204.2.8.2.9! (paf 767:: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 768: lexical_brackets_nestage++;
1.161 parser 769: break;
1.112 paf 770: }
771: break;
772:
773: // #COMMENT
1.194 paf 774: case LS_USER_COMMENT:
1.112 paf 775: if(c=='\n') {
776: // skip comment
1.204.2.8.2.9! (paf 777:: begin=pc.source;
! 778:: begin_pos=pc.pos;
1.112 paf 779:
1.204.2.8.2.9! (paf 780:: pop_LS(pc);
1.112 paf 781: continue;
1.1 paf 782: }
1.48 paf 783: break;
784:
785: // STRING IN EXPRESSION
1.145 parser 786: case LS_EXPRESSION_STRING_QUOTED:
787: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 788: switch(c) {
789: case '"':
1.145 parser 790: case '\'':
791: if(
1.204.2.8.2.9! (paf 792:: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
! 793:: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
! 794:: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 795: RC;
796: }
797: break;
1.48 paf 798: case '$':
1.204.2.8.2.9! (paf 799:: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 800: RC;
801: case '^':
1.204.2.8.2.9! (paf 802:: push_LS(pc, LS_METHOD_NAME);
1.48 paf 803: RC;
1.10 paf 804: }
805: break;
806:
807: // METHOD DEFINITION
808: case LS_DEF_NAME:
1.48 paf 809: switch(c) {
810: case '[':
1.204.2.8.2.9! (paf 811:: pc.ls=LS_DEF_PARAMS;
1.48 paf 812: RC;
813: case '\n':
1.204.2.8.2.9! (paf 814:: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 815: RC;
1.10 paf 816: }
817: break;
1.48 paf 818:
1.10 paf 819: case LS_DEF_PARAMS:
1.48 paf 820: switch(c) {
1.192 paf 821: case '$': // common error
1.193 paf 822: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
823: goto break2;
1.48 paf 824: case ';':
825: RC;
826: case ']':
1.204.2.8.2.9! (paf 827:: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 828: RC;
1.49 paf 829: case '\n': // wrong. bailing out
1.204.2.8.2.9! (paf 830:: pop_LS(pc);
1.48 paf 831: RC;
1.10 paf 832: }
833: break;
1.48 paf 834:
1.10 paf 835: case LS_DEF_LOCALS:
1.48 paf 836: switch(c) {
837: case '[':
838: case ';':
839: RC;
840: case ']':
1.204.2.8.2.9! (paf 841:: pc.ls=LS_DEF_COMMENT;
1.48 paf 842: RC;
843: case '\n': // wrong. bailing out
1.204.2.8.2.9! (paf 844:: pop_LS(pc);
1.48 paf 845: RC;
1.10 paf 846: }
847: break;
1.48 paf 848:
1.10 paf 849: case LS_DEF_COMMENT:
850: if(c=='\n') {
1.204.2.8.2.9! (paf 851:: pop_LS(pc);
1.48 paf 852: RC;
1.37 paf 853: }
854: break;
855:
1.48 paf 856: case LS_DEF_SPECIAL_BODY:
1.175 paf 857: if(c=='\n')
1.48 paf 858: RC;
859: break;
860:
861: // (EXPRESSION)
1.69 paf 862: case LS_VAR_ROUND:
863: case LS_METHOD_ROUND:
1.48 paf 864: switch(c) {
865: case ')':
866: if(--lexical_brackets_nestage==0)
1.204.2.8.2.9! (paf 867:: if(pc.ls==LS_METHOD_ROUND) // method round param ended
! 868:: pc.ls=LS_METHOD_AFTER; // look for method end
! 869:: else // pc.ls==LS_VAR_ROUND // variable constructor ended
! 870:: pop_LS(pc); // return to normal life
1.48 paf 871: RC;
1.194 paf 872: case '#': // comment start skipping
873: if(end!=begin) {
1.204.2.8.2.9! (paf 874:: if(!pc.string_start)
! 875:: pc.string_start=begin_pos;
1.194 paf 876: // append piece till #
1.204.2.8.2.9! (paf 877:: pc.string.append_strdup(begin, end-begin);
1.194 paf 878: }
879: // fall into COMMENT lexical state [wait for \n]
1.204.2.8.2.9! (paf 880:: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 881: lexical_brackets_nestage=1;
882: continue;
1.48 paf 883: case '$':
1.204.2.8.2.9! (paf 884:: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 885: RC;
886: case '^':
1.204.2.8.2.9! (paf 887:: push_LS(pc, LS_METHOD_NAME);
1.48 paf 888: RC;
889: case '(':
890: lexical_brackets_nestage++;
891: RC;
1.67 paf 892: case '-':
1.204.2.8.2.9! (paf 893:: switch(*pc.source) {
1.127 paf 894: case 'f': // -f
1.67 paf 895: skip_analized=1;
896: result=FEXISTS;
1.127 paf 897: goto break2;
898: case 'd': // -d
899: skip_analized=1;
900: result=DEXISTS;
901: goto break2;
1.191 paf 902: default: // minus
1.67 paf 903: result=c;
1.127 paf 904: goto break2;
905: }
1.67 paf 906: goto break2;
1.173 paf 907: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 908: case '~':
1.48 paf 909: case ';':
910: RC;
1.193 paf 911: case '&': case '|':
1.204.2.8.2.9! (paf 912:: if(*pc.source==c) { // && ||
1.193 paf 913: result=c=='&'?LAND:LOR;
1.67 paf 914: skip_analized=1;
1.58 paf 915: } else
916: result=c;
917: goto break2;
1.193 paf 918: case '!':
1.204.2.8.2.9! (paf 919:: switch(pc.source[0]) {
1.193 paf 920: case '|': // !| !||
921: skip_analized=1;
1.204.2.8.2.9! (paf 922:: if(pc.source[1]=='|') {
1.193 paf 923: skip_analized++;
924: result=LXOR;
925: } else
926: result=NXOR;
927: goto break2;
928: case '=': // !=
929: skip_analized=1;
930: result=NNE;
931: goto break2;
932: }
933: RC;
1.195 paf 934:
935: case '<': // <<, <=, <
1.204.2.8.2.9! (paf 936:: switch(*pc.source) {
1.195 paf 937: case '<': // <[<]
938: skip_analized=1; result=NSL; break;
939: case '=': // <[=]
940: skip_analized=1; result=NLE; break;
941: default: // <[]
942: result=c; break;
943: }
944: goto break2;
945: case '>': // >>, >=, >
1.204.2.8.2.9! (paf 946:: switch(*pc.source) {
1.195 paf 947: case '>': // >[>]
948: skip_analized=1; result=NSR; break;
949: case '=': // >[=]
950: skip_analized=1; result=NGE; break;
951: default: // >[]
952: result=c; break;
953: }
954: goto break2;
955: case '=': // ==
1.204.2.8.2.9! (paf 956:: switch(*pc.source) {
1.195 paf 957: case '=': // =[=]
958: skip_analized=1; result=NEQ; break;
959: default: // =[]
960: result=c; break; // not used now
961: }
1.58 paf 962: goto break2;
1.195 paf 963:
1.48 paf 964: case '"':
1.204.2.8.2.9! (paf 965:: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 966: RC;
967: case '\'':
1.204.2.8.2.9! (paf 968:: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 969: RC;
1.50 paf 970: case 'l': case 'g': case 'e': case 'n':
1.51 paf 971: if(end==begin) // right after whitespace
1.204.2.8.2.9! (paf 972:: if(isspace(pc.source[1])) {
! 973:: switch(*pc.source) {
1.117 paf 974: // case '?': // ok [and bad cases, yacc would bark at them]
975: case 't': // lt gt [et nt]
976: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
977: skip_analized=1;
978: goto break2;
979: case 'e': // le ge ne [ee]
980: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
981: skip_analized=1;
982: goto break2;
983: case 'q': // eq [lq gq nq]
984: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
985: skip_analized=1;
986: goto break2;
987: }
1.67 paf 988: }
989: break;
990: case 'i':
991: if(end==begin) // right after whitespace
1.204.2.8.2.9! (paf 992:: if(isspace(pc.source[1])) {
! 993:: switch(pc.source[0]) {
1.117 paf 994: case 'n': // in
1.95 paf 995: skip_analized=1;
996: result=IN;
997: goto break2;
1.117 paf 998: case 's': // is
1.95 paf 999: skip_analized=1;
1000: result=IS;
1001: goto break2;
1002: }
1.67 paf 1003: }
1004: break;
1005: case 'd':
1006: if(end==begin) // right after whitespace
1.204.2.8.2.9! (paf 1007:: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.67 paf 1008: skip_analized=2;
1009: result=DEF;
1.58 paf 1010: goto break2;
1.50 paf 1011: }
1.48 paf 1012: break;
1013: case ' ': case '\t': case '\n':
1.63 paf 1014: if(end!=begin) { // there were a string after previous operator?
1015: result=0; // return that string
1016: goto break2;
1.48 paf 1017: }
1.63 paf 1018: // that's a leading|traling space or after-operator-space
1019: // ignoring it
1020: // reset piece 'begin' position & line
1.204.2.8.2.9! (paf 1021:: begin=pc.source; // after whitespace char
! 1022:: begin_pos=pc.pos;
1.48 paf 1023: continue;
1.1 paf 1024: }
1025: break;
1.194 paf 1026: case LS_EXPRESSION_COMMENT:
1027: if(c=='(')
1028: lexical_brackets_nestage++;
1029:
1.204.2.8.2.9! (paf 1030:: switch(*pc.source) {
1.194 paf 1031: case '\n': case ')':
1.204.2.8.2.9! (paf 1032:: if(*pc.source==')')
1.194 paf 1033: if(--lexical_brackets_nestage!=0)
1034: continue;
1035:
1036: // skip comment
1.204.2.8.2.9! (paf 1037:: begin=pc.source;
! 1038:: begin_pos=pc.pos;
1.194 paf 1039:
1.204.2.8.2.9! (paf 1040:: pop_LS(pc);
1.194 paf 1041: continue;
1042: }
1043: break;
1.1 paf 1044:
1.10 paf 1045: // VARIABLE GET/PUT/WITH
1.166 parser 1046: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1047: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1048: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1049: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1050: if(
1.204.2.8.2.9! (paf 1051:: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
! 1052:: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1053: // name in expr ends also before
1.48 paf 1054: switch(c) {
1.181 paf 1055: // expression minus
1.92 paf 1056: case '-':
1.181 paf 1057: // expression integer division
1058: case '\\':
1.204.2.8.2.9! (paf 1059:: pop_LS(pc);
! 1060:: pc.source--; if(--pc.pos.col<0) { pc.pos.line--; pc.pos.col=-1; }
1.48 paf 1061: result=EON;
1062: goto break2;
1063: }
1064: }
1.166 parser 1065: if(
1.204.2.8.2.9! (paf 1066:: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
! 1067:: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1068: // name already has ':', stop before next
1069: switch(c) {
1070: case ':':
1.204.2.8.2.9! (paf 1071:: pop_LS(pc);
! 1072:: pc.source--; if(--pc.pos.col<0) { pc.pos.line--; pc.pos.col=-1; }
1.142 parser 1073: result=EON;
1074: goto break2;
1075: }
1076: }
1.48 paf 1077: switch(c) {
1078: case 0:
1079: case ' ': case '\t': case '\n':
1080: case ';':
1.126 paf 1081: case ']': case '}': case ')':
1082: case '"': case '\'':
1.139 parser 1083: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.92 paf 1084: case '+': case '*': case '/': case '%':
1085: case '&': case '|':
1086: case '=': case '!':
1.99 paf 1087: // common delimiters
1.190 paf 1088: case ',': case '?': case '#':
1.139 parser 1089: // before call
1090: case '^':
1.204.2.8.2.9! (paf 1091:: pop_LS(pc);
! 1092:: pc.source--; if(--pc.pos.col<0) { pc.pos.line--; pc.pos.col=-1; }
1.13 paf 1093: result=EON;
1.1 paf 1094: goto break2;
1.48 paf 1095: case '[':
1.162 parser 1096: // $name.<[>code]
1.204.2.8.2.9! (paf 1097:: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1098: end[-1]=='$'/*was start of get*/ ||
1099: end[-1]==':'/*was class name delim */ ||
1100: end[-1]=='.'/*was name delim */
1.162 parser 1101: )) {
1.204.2.8.2.9! (paf 1102:: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1103: lexical_brackets_nestage=1;
1104: RC;
1105: }
1.204.2.8.2.9! (paf 1106:: pc.ls=LS_VAR_SQUARE;
1.1 paf 1107: lexical_brackets_nestage=1;
1.48 paf 1108: RC;
1109: case '{':
1110: if(begin==end) { // ${name}, no need of EON, switching LS
1.204.2.8.2.9! (paf 1111:: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1112: } else {
1.204.2.8.2.9! (paf 1113:: pc.ls=LS_VAR_CURLY;
1.48 paf 1114: lexical_brackets_nestage=1;
1115: }
1.69 paf 1116:
1.48 paf 1117: RC;
1118: case '(':
1.204.2.8.2.9! (paf 1119:: pc.ls=LS_VAR_ROUND;
1.1 paf 1120: lexical_brackets_nestage=1;
1.48 paf 1121: RC;
1122: case '.': // name part delim
1123: case '$': // name part subvar
1.160 parser 1124: case ':': // class<:>name
1.166 parser 1125: // go to _WITHOUT_COLON state variant...
1.204.2.8.2.9! (paf 1126:: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
! 1127:: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
! 1128:: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
! 1129:: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1130: // ...stop before next ':'
1.48 paf 1131: RC;
1.1 paf 1132: }
1133: break;
1.48 paf 1134:
1.1 paf 1135: case LS_VAR_NAME_CURLY:
1.48 paf 1136: switch(c) {
1.162 parser 1137: case '[':
1.166 parser 1138: // ${name.<[>code]}
1.204.2.8.2.9! (paf 1139:: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1140: lexical_brackets_nestage=1;
1141: RC;
1.48 paf 1142: case '}': // ${name} finished, restoring LS
1.204.2.8.2.9! (paf 1143:: pop_LS(pc);
1.48 paf 1144: RC;
1145: case '.': // name part delim
1146: case '$': // name part subvar
1147: case ':': // ':name' or 'class:name'
1148: RC;
1.1 paf 1149: }
1150: break;
1.48 paf 1151:
1152: case LS_VAR_SQUARE:
1153: switch(c) {
1154: case '$':
1.204.2.8.2.9! (paf 1155:: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1156: RC;
1157: case '^':
1.204.2.8.2.9! (paf 1158:: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1159: RC;
1160: case ']':
1.1 paf 1161: if(--lexical_brackets_nestage==0) {
1.204.2.8.2.9! (paf 1162:: pop_LS(pc);
1.48 paf 1163: RC;
1.1 paf 1164: }
1.48 paf 1165: break;
1166: case ';': // operator_or_fmt;value delim
1167: RC;
1168: case '[':
1169: lexical_brackets_nestage++;
1170: break;
1.1 paf 1171: }
1172: break;
1.48 paf 1173:
1.1 paf 1174: case LS_VAR_CURLY:
1.48 paf 1175: switch(c) {
1176: case '$':
1.204.2.8.2.9! (paf 1177:: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1178: RC;
1179: case '^':
1.204.2.8.2.9! (paf 1180:: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1181: RC;
1182: case '}':
1.1 paf 1183: if(--lexical_brackets_nestage==0) {
1.204.2.8.2.9! (paf 1184:: pop_LS(pc);
1.48 paf 1185: RC;
1.1 paf 1186: }
1.48 paf 1187: break;
1188: case '{':
1.1 paf 1189: lexical_brackets_nestage++;
1.48 paf 1190: break;
1191: }
1.1 paf 1192: break;
1193:
1.10 paf 1194: // METHOD CALL
1.1 paf 1195: case LS_METHOD_NAME:
1.48 paf 1196: switch(c) {
1197: case '[':
1.166 parser 1198: // ^name.<[>code].xxx
1.204.2.8.2.9! (paf 1199:: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1200: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1201: end[-1]==':'/*was class name delim */ ||
1202: end[-1]=='.'/*was name delim */
1.162 parser 1203: )) {
1.204.2.8.2.9! (paf 1204:: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1205: lexical_brackets_nestage=1;
1206: RC;
1207: }
1.204.2.8.2.9! (paf 1208:: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1209: lexical_brackets_nestage=1;
1.48 paf 1210: RC;
1211: case '{':
1.204.2.8.2.9! (paf 1212:: pc.ls=LS_METHOD_CURLY;
1.1 paf 1213: lexical_brackets_nestage=1;
1.48 paf 1214: RC;
1.69 paf 1215: case '(':
1.204.2.8.2.9! (paf 1216:: pc.ls=LS_METHOD_ROUND;
1.69 paf 1217: lexical_brackets_nestage=1;
1218: RC;
1.48 paf 1219: case '.': // name part delim
1220: case '$': // name part subvar
1221: case ':': // ':name' or 'class:name'
1.170 parser 1222: case '^': // ^abc^xxx wrong. bailing out
1223: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.48 paf 1224: RC;
1.1 paf 1225: }
1226: break;
1.48 paf 1227:
1228: case LS_METHOD_SQUARE:
1229: switch(c) {
1230: case '$':
1.204.2.8.2.9! (paf 1231:: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1232: RC;
1233: case '^':
1.204.2.8.2.9! (paf 1234:: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1235: RC;
1236: case ';': // param delim
1237: RC;
1238: case ']':
1.1 paf 1239: if(--lexical_brackets_nestage==0) {
1.204.2.8.2.9! (paf 1240:: pc.ls=LS_METHOD_AFTER;
1.48 paf 1241: RC;
1.1 paf 1242: }
1.48 paf 1243: break;
1244: case '[':
1.1 paf 1245: lexical_brackets_nestage++;
1.48 paf 1246: break;
1247: }
1.1 paf 1248: break;
1.48 paf 1249:
1.1 paf 1250: case LS_METHOD_CURLY:
1.48 paf 1251: switch(c) {
1252: case '$':
1.204.2.8.2.9! (paf 1253:: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1254: RC;
1255: case '^':
1.204.2.8.2.9! (paf 1256:: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1257: RC;
1258: case ';': // param delim
1.48 paf 1259: RC;
1260: case '}':
1.1 paf 1261: if(--lexical_brackets_nestage==0) {
1.204.2.8.2.9! (paf 1262:: pc.ls=LS_METHOD_AFTER;
1.48 paf 1263: RC;
1.1 paf 1264: }
1.48 paf 1265: break;
1266: case '{':
1.1 paf 1267: lexical_brackets_nestage++;
1.48 paf 1268: break;
1269: }
1.1 paf 1270: break;
1.48 paf 1271:
1.1 paf 1272: case LS_METHOD_AFTER:
1.69 paf 1273: if(c=='[') {/* ][ }[ )[ */
1.204.2.8.2.9! (paf 1274:: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1275: lexical_brackets_nestage=1;
1.48 paf 1276: RC;
1.1 paf 1277: }
1.69 paf 1278: if(c=='{') {/* ]{ }{ ){ */
1.204.2.8.2.9! (paf 1279:: pc.ls=LS_METHOD_CURLY;
1.69 paf 1280: lexical_brackets_nestage=1;
1281: RC;
1282: }
1283: if(c=='(') {/* ]( }( )( */
1.204.2.8.2.9! (paf 1284:: pc.ls=LS_METHOD_ROUND;
1.1 paf 1285: lexical_brackets_nestage=1;
1.48 paf 1286: RC;
1.1 paf 1287: }
1.204.2.8.2.9! (paf 1288:: pop_LS(pc);
! 1289:: pc.source--; if(--pc.pos.col<0) { pc.pos.line--; pc.pos.col=-1; }
1.13 paf 1290: result=EON;
1.1 paf 1291: goto break2;
1292: }
1.9 paf 1293: if(c==0) {
1.1 paf 1294: result=-1;
1295: break;
1296: }
1297: }
1298:
1299: break2:
1.59 paf 1300: if(end!=begin) { // there is last piece?
1301: if((c=='@' || c==0) && end[-1]=='\n') { // we are before LS_DEF_NAME or EOF?
1302: // strip last \n
1.10 paf 1303: end--;
1.137 parser 1304: if(end!=begin && end[-1]=='\n') // allow one empty line before LS_DEF_NAME
1305: end--;
1.59 paf 1306: }
1.204.2.8.2.9! (paf 1307:: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
! 1308:: if(!pc.string_start)
! 1309:: pc.string_start=begin_pos;
1.59 paf 1310: // append it
1.204.2.8.2.9! (paf 1311:: pc.string.append_strdup(begin, end-begin);
1.30 paf 1312: }
1.59 paf 1313: }
1.204.2.8.2.9! (paf 1314:: if(!pc.string.is_empty()) { // something accumulated?
1.17 paf 1315: // create STRING value: array of OP_VALUE+vstring
1.204.2.8.2.8 (paf 1316:: *lvalp=VL(
1.204.2.8.2.9! (paf 1317:: new VString(*new String(pc.string, String::L_CLEAN)),
! 1318:: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1319: // new pieces storage
1.204.2.8.2.9! (paf 1320:: pc.string.clear();
! 1321:: pc.string_start.clear();
1.58 paf 1322: // make current result be pending for next call, return STRING for now
1.204.2.8.2.9! (paf 1323:: pc.pending_state=result; result=STRING;
1.58 paf 1324: }
1.67 paf 1325: if(skip_analized) {
1.204.2.8.2.9! (paf 1326:: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1327: }
1.58 paf 1328: return result;
1.1 paf 1329: }
1330:
1.204.2.8.2.9! (paf 1331:: static int real_yyerror(Parse_control *pc, char *s) { // Called by yyparse on error
1.114 paf 1332: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1333: return 1;
1.110 paf 1334: }
1.1 paf 1335:
1.110 paf 1336: static void yyprint(FILE *file, int type, YYSTYPE value) {
1337: if(type==STRING)
1.204.2.8.2.1 (paf 1338:: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1339: }
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