Annotation of parser3/src/main/compile.y, revision 1.266
1.168 parser 1: %{
1.105 paf 2: /** @file
1.106 paf 3: Parser: compiler(lexical parser and grammar).
4:
1.262 moko 5: Copyright (c) 2001-2012 Art. Lebedev Studio (http://www.artlebedev.com)
1.168 parser 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.217 paf 7:
1.262 moko 8:
1.88 paf 9: */
10:
1.266 ! misha 11: volatile const char * IDENT_COMPILE_Y = "$Id: compile.y,v 1.265 2013/09/30 19:40:57 moko Exp $";
1.262 moko 12:
1.106 paf 13: /**
14: @todo parser4:
15: - cache compiled code from request to request. to do that...
16: -#: make method definitions, @CLASS, @BASE, @USE instructions,
1.88 paf 17: which would be executed afterwards, and actions
18: now performed at compile time would be delayed to run time.
1.106 paf 19: -#: make cache expiration on time and on disk-change of class source
20: -#: in apache use subpools for compiled class storage
21: -#: in iis make up specialized Pool object for that
1.24 paf 22: */
23:
1.206 paf 24: #define YYSTYPE ArrayOperation*
1.9 paf 25: #define YYPARSE_PARAM pc
26: #define YYLEX_PARAM pc
27: #define YYDEBUG 1
1.106 paf 28: #define YYERROR_VERBOSE 1
1.206 paf 29: #define yyerror(msg) real_yyerror((Parse_control *)pc, msg)
1.9 paf 30: #define YYPRINT(file, type, value) yyprint(file, type, value)
1.1 paf 31:
1.206 paf 32: // includes
33:
1.1 paf 34: #include "compile_tools.h"
1.8 paf 35: #include "pa_value.h"
1.12 paf 36: #include "pa_request.h"
1.39 paf 37: #include "pa_vobject.h"
1.52 paf 38: #include "pa_vdouble.h"
1.98 paf 39: #include "pa_globals.h"
1.200 paf 40: #include "pa_vmethod_frame.h"
1.39 paf 41:
1.206 paf 42: // defines
43:
1.97 paf 44: #define USE_CONTROL_METHOD_NAME "USE"
1.226 misha 45: #define OPTIONS_CONTROL_METHOD_NAME "OPTIONS"
46: #define OPTION_ALL_VARS_LOCAL_NAME "locals"
1.230 misha 47: #define OPTION_PARTIAL_CLASS "partial"
1.238 misha 48: #define REM_OPERATOR_NAME "rem"
1.1 paf 49:
1.206 paf 50: // forwards
51:
1.264 moko 52: static int real_yyerror(Parse_control* pc, const char* s);
1.206 paf 53: static void yyprint(FILE* file, int type, YYSTYPE value);
54: static int yylex(YYSTYPE* lvalp, void* pc);
1.1 paf 55:
1.216 paf 56: static const VBool vfalse(false);
57: static const VBool vtrue(true);
1.261 moko 58: static const VString vempty;
1.216 paf 59:
1.8 paf 60: // local convinient inplace typecast & var
1.205 paf 61: #undef PC
1.206 paf 62: #define PC (*(Parse_control *)pc)
63: #undef POOL
1.114 paf 64: #define POOL (*PC.pool)
1.107 paf 65: #ifndef DOXYGEN
1.265 moko 66:
67: #define CLASS_ADD if(PC.class_add()){ \
68: strncpy(PC.error, PC.cclass->name().cstr(), MAX_STRING/2); \
69: strcat(PC.error, " - class is already defined"); \
70: YYERROR; \
71: }
72:
1.1 paf 73: %}
74:
75: %pure_parser
76:
1.13 paf 77: %token EON
1.4 paf 78: %token STRING
1.1 paf 79: %token BOGUS
1.55 paf 80:
1.58 paf 81: %token BAD_STRING_COMPARISON_OPERATOR
1.114 paf 82: %token BAD_HEX_LITERAL
1.171 parser 83: %token BAD_METHOD_DECL_START
1.193 paf 84: %token BAD_METHOD_PARAMETER_NAME_CHARACTER
1.209 paf 85: %token BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE
1.58 paf 86:
1.59 paf 87: %token LAND "&&"
1.58 paf 88: %token LOR "||"
1.193 paf 89: %token LXOR "!||"
90: %token NXOR "!|"
1.58 paf 91:
92: %token NLE "<="
93: %token NGE ">="
94: %token NEQ "=="
95: %token NNE "!="
1.195 paf 96: %token NSL "<<"
97: %token NSR ">>"
1.58 paf 98:
99: %token SLT "lt"
100: %token SGT "gt"
101: %token SLE "le"
102: %token SGE "ge"
103: %token SEQ "eq"
104: %token SNE "ne"
105:
1.67 paf 106: %token DEF "def"
107: %token IN "in"
108: %token FEXISTS "-f"
1.127 paf 109: %token DEXISTS "-d"
1.95 paf 110: %token IS "is"
1.67 paf 111:
1.216 paf 112: %token LITERAL_TRUE "true"
113: %token LITERAL_FALSE "false"
114:
1.57 paf 115: /* logical */
1.193 paf 116: %left "!||"
1.57 paf 117: %left "||"
118: %left "&&"
1.131 paf 119: %left '<' '>' "<=" ">=" "lt" "gt" "le" "ge"
120: %left "==" "!=" "eq" "ne"
121: %left "is" "def" "in" "-f" "-d"
1.57 paf 122:
123: /* bitwise */
1.193 paf 124: %left "!|"
1.131 paf 125: %left '|'
126: %left '&'
1.202 paf 127: %left "<<" ">>"
1.57 paf 128:
1.56 paf 129: /* numerical */
1.202 paf 130: %left '+' '-'
131: %left '*' '/' '\\' '%'
132: %left NUNARY /* unary - + */
133:
134: /* out-of-group */
135: %left '~' /* bitwise */
136: %left '!' /* logical */
1.1 paf 137:
138: %%
1.195 paf 139: all:
1.10 paf 140: one_big_piece {
1.251 misha 141: Method* method=new Method(Method::CT_ANY,
1.81 paf 142: 0, 0, /*min, max numbered_params_count*/
1.75 paf 143: 0/*param_names*/, 0/*local_names*/,
144: $1/*parser_code*/, 0/*native_code*/);
1.251 misha 145: PC.cclass->set_method(PC.alias_method(main_method_name), method);
1.10 paf 146: }
147: | methods;
148:
149: methods: method | methods method;
150: one_big_piece: maybe_codes;
151:
1.34 paf 152: method: control_method | code_method;
153:
154: control_method: '@' STRING '\n'
1.132 paf 155: maybe_control_strings {
1.260 misha 156: const String& command=LA2S(*$2)->trim(String::TRIM_END);
1.34 paf 157: YYSTYPE strings_code=$4;
1.206 paf 158: if(strings_code->count()<1*OPERATIONS_PER_OPVALUE) {
1.114 paf 159: strcpy(PC.error, "@");
160: strcat(PC.error, command.cstr());
161: strcat(PC.error, " is empty");
1.37 paf 162: YYERROR;
163: }
1.74 paf 164: if(command==CLASS_NAME) {
1.206 paf 165: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.265 moko 166: CLASS_ADD;
1.73 paf 167: // new class' name
1.260 misha 168: const String& name=LA2S(*strings_code)->trim(String::TRIM_END);
1.73 paf 169: // creating the class
1.206 paf 170: VStateless_class* cclass=new VClass;
1.226 misha 171: PC.cclass_new=cclass;
172: PC.cclass_new->set_name(name);
1.266 ! misha 173: PC.append=false;
1.73 paf 174: } else {
1.206 paf 175: strcpy(PC.error, "@"CLASS_NAME" must contain only one line with class name (contains more then one)");
1.34 paf 176: YYERROR;
177: }
1.130 paf 178: } else if(command==USE_CONTROL_METHOD_NAME) {
1.265 moko 179: CLASS_ADD;
1.206 paf 180: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE)
1.260 misha 181: PC.request.use_file(PC.request.main_class, LA2S(*strings_code, i)->trim(String::TRIM_END), PC.request.get_used_filename(PC.file_no));
1.130 paf 182: } else if(command==BASE_NAME) {
1.226 misha 183: if(PC.append){
184: strcpy(PC.error, "can't set base while appending methods to class '");
185: strncat(PC.error, PC.cclass->name().cstr(), MAX_STRING/2);
186: strcat(PC.error, "'");
187: YYERROR;
188: }
1.265 moko 189: CLASS_ADD;
1.188 paf 190: if(PC.cclass->base_class()) { // already changed from default?
1.130 paf 191: strcpy(PC.error, "class already have a base '");
1.226 misha 192: strncat(PC.error, PC.cclass->base_class()->name().cstr(), MAX_STRING/2);
1.130 paf 193: strcat(PC.error, "'");
194: YYERROR;
195: }
1.206 paf 196: if(strings_code->count()==1*OPERATIONS_PER_OPVALUE) {
1.260 misha 197: const String& base_name=LA2S(*strings_code)->trim(String::TRIM_END);
1.252 misha 198: if(Value* base_class_value=PC.request.get_class(base_name)) {
1.206 paf 199: // @CLASS == @BASE sanity check
200: if(VStateless_class *base_class=base_class_value->get_class()) {
201: if(PC.cclass==base_class) {
202: strcpy(PC.error, "@"CLASS_NAME" equals @"BASE_NAME);
203: YYERROR;
204: }
205: PC.cclass->get_class()->set_base(base_class);
206: } else { // they asked to derive from a class without methods ['env' & co]
207: strcpy(PC.error, base_name.cstr());
208: strcat(PC.error, ": you can not derive from this class in @"BASE_NAME);
209: YYERROR;
210: }
211: } else {
1.130 paf 212: strcpy(PC.error, base_name.cstr());
213: strcat(PC.error, ": undefined class in @"BASE_NAME);
1.73 paf 214: YYERROR;
215: }
1.34 paf 216: } else {
1.130 paf 217: strcpy(PC.error, "@"BASE_NAME" must contain sole name");
1.34 paf 218: YYERROR;
219: }
1.223 misha 220: } else if(command==OPTIONS_CONTROL_METHOD_NAME) {
221: for(size_t i=0; i<strings_code->count(); i+=OPERATIONS_PER_OPVALUE) {
1.260 misha 222: const String& option=LA2S(*strings_code, i)->trim(String::TRIM_END);
1.226 misha 223: if(option==OPTION_ALL_VARS_LOCAL_NAME){
224: PC.set_all_vars_local();
1.230 misha 225: } else if(option==OPTION_PARTIAL_CLASS){
226: if(PC.cclass_new){
227: if(VStateless_class* existed=PC.get_existed_class(PC.cclass_new)){
228: if(!PC.reuse_existed_class(existed)){
229: strcpy(PC.error, "can't append methods to '");
230: strncat(PC.error, PC.cclass_new->name().cstr(), MAX_STRING/2);
231: strcat(PC.error, "' - the class wasn't marked as partial");
232: YYERROR;
233: }
1.226 misha 234: } else {
1.256 misha 235: // marks the new class as partial. we will be able to add methods here later.
1.230 misha 236: PC.cclass_new->set_partial();
1.226 misha 237: }
1.230 misha 238: } else {
239: strcpy(PC.error, "'"OPTION_PARTIAL_CLASS"' option should be used straight after @"CLASS_NAME);
1.226 misha 240: YYERROR;
241: }
1.256 misha 242: } else if(option==method_call_type_static){
243: PC.set_methods_call_type(Method::CT_STATIC);
244: } else if(option==method_call_type_dynamic){
245: PC.set_methods_call_type(Method::CT_DYNAMIC);
1.223 misha 246: } else {
1.226 misha 247: strcpy(PC.error, "'");
248: strncat(PC.error, option.cstr(), MAX_STRING/2);
249: strcat(PC.error, "' invalid option. valid options are "
1.256 misha 250: "'"OPTION_PARTIAL_CLASS"', '"OPTION_ALL_VARS_LOCAL_NAME"'"
251: ", '"METHOD_CALL_TYPE_STATIC"' and '"METHOD_CALL_TYPE_DYNAMIC"'"
252: );
1.223 misha 253: YYERROR;
254: }
255: }
1.130 paf 256: } else {
257: strcpy(PC.error, "'");
258: strncat(PC.error, command.cstr(), MAX_STRING/2);
259: strcat(PC.error, "' invalid special name. valid names are "
1.223 misha 260: "'"CLASS_NAME"', '"USE_CONTROL_METHOD_NAME"', '"BASE_NAME"' and '"OPTIONS_CONTROL_METHOD_NAME"'.");
1.130 paf 261: YYERROR;
1.34 paf 262: }
263: };
1.132 paf 264: maybe_control_strings: empty | control_strings;
1.259 misha 265: control_strings: control_string | control_strings control_string { $$=$1; P(*$$, *$2); };
1.37 paf 266: control_string: maybe_string '\n';
267: maybe_string: empty | STRING;
1.34 paf 268:
1.222 misha 269: code_method: '@' STRING bracketed_maybe_strings maybe_bracketed_strings maybe_comment '\n' {
1.265 moko 270: CLASS_ADD;
1.208 paf 271: PC.explicit_result=false;
1.10 paf 272:
273: YYSTYPE params_names_code=$3;
1.206 paf 274: ArrayString* params_names=0;
275: if(int size=params_names_code->count()) {
276: params_names=new ArrayString;
277: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE)
278: *params_names+=LA2S(*params_names_code, i);
1.75 paf 279: }
1.10 paf 280:
281: YYSTYPE locals_names_code=$4;
1.206 paf 282: ArrayString* locals_names=0;
1.223 misha 283: bool all_vars_local=false;
1.206 paf 284: if(int size=locals_names_code->count()) {
285: locals_names=new ArrayString;
1.208 paf 286: for(int i=0; i<size; i+=OPERATIONS_PER_OPVALUE) {
287: const String* local_name=LA2S(*locals_names_code, i);
288: if(*local_name==RESULT_VAR_NAME)
289: PC.explicit_result=true;
1.226 misha 290: else if(*local_name==OPTION_ALL_VARS_LOCAL_NAME)
1.223 misha 291: all_vars_local=true;
1.208 paf 292: else
293: *locals_names+=local_name;
294: }
1.75 paf 295: }
1.231 misha 296: if(!all_vars_local && PC.cclass && PC.cclass->is_vars_local())
1.223 misha 297: all_vars_local=true;
1.10 paf 298:
1.208 paf 299: Method* method=new Method(
1.206 paf 300: //name,
1.257 misha 301: GetMethodCallType(PC, *$2),
1.81 paf 302: 0, 0/*min,max numbered_params_count*/,
1.76 paf 303: params_names, locals_names,
1.223 misha 304: 0/*to be filled later in next {} */, 0, all_vars_local);
1.221 misha 305:
1.208 paf 306: *reinterpret_cast<Method**>(&$$)=method;
1.222 misha 307: } maybe_codes {
1.251 misha 308: Method* method=reinterpret_cast<Method*>($7);
1.231 misha 309: // fill in the code
1.251 misha 310: method->parser_code=$8;
1.231 misha 311:
312: // register in class
313: const String& name=*LA2S(*$2);
1.251 misha 314: PC.cclass->set_method(PC.alias_method(name), method);
1.8 paf 315: };
1.10 paf 316:
317: maybe_bracketed_strings: empty | bracketed_maybe_strings;
1.259 misha 318: bracketed_maybe_strings: '[' maybe_strings ']' {$$=$2;};
1.10 paf 319: maybe_strings: empty | strings;
1.259 misha 320: strings: STRING | strings ';' STRING { $$=$1; P(*$$, *$3); };
1.10 paf 321:
322: maybe_comment: empty | STRING;
1.1 paf 323:
324: /* codes */
325:
1.10 paf 326: maybe_codes: empty | codes;
327:
1.259 misha 328: codes: code | codes code { $$=$1; P(*$$, *$2); };
1.81 paf 329: code: write_string | action;
1.209 paf 330: action: get | put | call;
1.1 paf 331:
332: /* get */
333:
1.64 paf 334: get: get_value {
1.238 misha 335: $$=N();
336: YYSTYPE code=$1;
1.247 misha 337: size_t count=code->count();
1.245 misha 338:
1.235 misha 339: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.247 misha 340: if(
341: count!=3
342: || !maybe_change_first_opcode(*code, OP::OP_VALUE__GET_ELEMENT, /*=>*/OP::OP_VALUE__GET_ELEMENT__WRITE)
343: )
1.238 misha 344: #endif
1.247 misha 345:
1.245 misha 346: #ifdef OPTIMIZE_BYTECODE_GET_SELF_ELEMENT
1.247 misha 347: if(
348: count!=3
349: || !maybe_change_first_opcode(*code, OP::OP_WITH_SELF__VALUE__GET_ELEMENT, /*=>*/OP::OP_WITH_SELF__VALUE__GET_ELEMENT__WRITE)
350: )
1.245 misha 351: #endif
352:
1.239 misha 353: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
1.247 misha 354: if(
355: count!=5
356: || !maybe_change_first_opcode(*code, OP::OP_GET_OBJECT_ELEMENT, /*=>*/OP::OP_GET_OBJECT_ELEMENT__WRITE)
357: )
1.239 misha 358: #endif
359:
360: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
1.247 misha 361: if(
362: count!=5
363: || !maybe_change_first_opcode(*code, OP::OP_GET_OBJECT_VAR_ELEMENT, /*=>*/OP::OP_GET_OBJECT_VAR_ELEMENT__WRITE)
364: )
1.238 misha 365: #endif
1.247 misha 366: {
367: changetail_or_append(*code,
368: OP::OP_GET_ELEMENT, false, /*=>*/OP::OP_GET_ELEMENT__WRITE,
369: /*or */OP::OP_WRITE_VALUE
370: ); /* value=pop; wcontext.write(value) */
1.246 misha 371: }
1.247 misha 372:
1.238 misha 373: P(*$$, *code);
1.1 paf 374: };
1.259 misha 375: get_value: '$' get_name_value { $$=$2; };
1.64 paf 376: get_name_value: name_without_curly_rdive EON | name_in_curly_rdive;
1.259 misha 377: name_in_curly_rdive: '{' name_without_curly_rdive '}' { $$=$2; };
1.44 paf 378: name_without_curly_rdive:
379: name_without_curly_rdive_read
380: | name_without_curly_rdive_class;
1.19 paf 381: name_without_curly_rdive_read: name_without_curly_rdive_code {
1.206 paf 382: $$=N();
1.238 misha 383: YYSTYPE diving_code=$1;
1.239 misha 384: size_t count=diving_code->count();
1.247 misha 385:
386: if(maybe_make_self(*$$, *diving_code, count)) {
387: // $self.
388: } else
1.239 misha 389:
390: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_ELEMENT
1.247 misha 391: if(maybe_make_get_object_element(*$$, *diving_code, count)){
1.245 misha 392: // optimization for $object.field + ^object.method[
1.247 misha 393: } else
1.238 misha 394: #endif
1.239 misha 395:
396: #ifdef OPTIMIZE_BYTECODE_GET_OBJECT_VAR_ELEMENT
1.247 misha 397: if(maybe_make_get_object_var_element(*$$, *diving_code, count)){
1.245 misha 398: // optimization for $object.$var
1.247 misha 399: } else
1.238 misha 400: #endif
1.239 misha 401:
402: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.248 misha 403: if(
404: count>=4
405: && (*diving_code)[0].code==OP::OP_VALUE
406: && (*diving_code)[3].code==OP::OP_GET_ELEMENT
407: ){
408: // optimization
1.239 misha 409: O(*$$,
1.247 misha 410: (PC.in_call_value && count==4)
1.239 misha 411: ? OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR // ^object[ : OP_VALUE+origin+string+OP_GET_ELEMENT => OP_VALUE__GET_ELEMENT_OR_OPERATOR+origin+string
412: : OP::OP_VALUE__GET_ELEMENT // $object : OP_VALUE+origin+string+OP_GET_ELEMENT => OP_VALUE__GET_ELEMENT+origin+string
413: );
414: P(*$$, *diving_code, 1/*offset*/, 2/*limit*/); // copy origin+value
1.247 misha 415: if(count>4)
416: P(*$$, *diving_code, 4); // copy tail
1.239 misha 417: } else {
418: O(*$$, OP::OP_WITH_READ); /* stack: starting context */
419: P(*$$, *diving_code);
420: }
1.233 misha 421: #else
1.247 misha 422: {
1.238 misha 423: O(*$$, OP::OP_WITH_READ); /* stack: starting context */
1.179 paf 424:
1.238 misha 425: // ^if OP_ELEMENT => ^if OP_ELEMENT_OR_OPERATOR
426: // optimized OP_VALUE+origin+string+OP_GET_ELEMENT. => OP_VALUE+origin+string+OP_GET_ELEMENT_OR_OPERATOR.
1.239 misha 427: if(PC.in_call_value && count==4)
428: diving_code->put(count-1, OP::OP_GET_ELEMENT_OR_OPERATOR);
1.206 paf 429: P(*$$, *diving_code);
1.239 misha 430: }
1.233 misha 431: #endif
1.22 paf 432: /* diving code; stack: current context */
1.1 paf 433: };
1.259 misha 434: name_without_curly_rdive_class: class_prefix name_without_curly_rdive_code { $$=$1; P(*$$, *$2); };
435: name_without_curly_rdive_code: name_advance2 | name_path name_advance2 { $$=$1; P(*$$, *$2); };
1.1 paf 436:
437: /* put */
438:
1.81 paf 439: put: '$' name_expr_wdive construct {
1.241 misha 440: $$=N();
1.244 misha 441: #ifdef OPTIMIZE_BYTECODE_CONSTRUCT
442: if(maybe_optimize_construct(*$$, *$2, *$3)){
1.246 misha 443: // $a(expr), $.a(expr), $a[value], $.a[value], $self.a[value], $self.a(expr)
1.241 misha 444: } else
445: #endif
446: {
447: P(*$$, *$2); /* stack: context,name */
448: P(*$$, *$3); /* stack: context,name,constructor_value */
449: }
1.20 paf 450: };
1.44 paf 451: name_expr_wdive:
1.157 parser 452: name_expr_wdive_root
453: | name_expr_wdive_write
1.44 paf 454: | name_expr_wdive_class;
1.157 parser 455: name_expr_wdive_root: name_expr_dive_code {
1.206 paf 456: $$=N();
1.238 misha 457: YYSTYPE diving_code=$1;
1.247 misha 458: size_t count=diving_code->count();
459:
460: if(maybe_make_self(*$$, *diving_code, count)) {
461: // $self.
462: } else
463: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
464: if(
465: count>=4
466: && (*diving_code)[0].code==OP::OP_VALUE
467: && (*diving_code)[3].code==OP::OP_GET_ELEMENT
468: ){
469: O(*$$, OP::OP_WITH_ROOT__VALUE__GET_ELEMENT);
470: P(*$$, *diving_code, 1/*offset*/, 2/*limit*/); // copy origin+value
471: if(count>4)
472: P(*$$, *diving_code, 4); // tail
473: } else
474: #endif
475: {
1.229 misha 476: O(*$$, OP::OP_WITH_ROOT); /* stack: starting context */
1.206 paf 477: P(*$$, *diving_code);
1.23 paf 478: }
479: /* diving code; stack: current context */
1.156 parser 480: };
1.157 parser 481: name_expr_wdive_write: '.' name_expr_dive_code {
1.206 paf 482: $$=N();
1.229 misha 483: O(*$$, OP::OP_WITH_WRITE); /* stack: starting context */
1.206 paf 484: P(*$$, *$2); /* diving code; stack: context,name */
1.20 paf 485: };
1.259 misha 486: name_expr_wdive_class: class_prefix name_expr_dive_code { $$=$1; P(*$$, *$2); };
1.20 paf 487:
1.244 misha 488: construct:
1.163 parser 489: construct_square
490: | construct_round
491: | construct_curly
1.149 parser 492: ;
1.211 paf 493: construct_square: '[' {
494: // allow $result_or_other_variable[ letters here any time ]
495: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
496: } any_constructor_code_value {
1.213 paf 497: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.211 paf 498: } ']' {
1.149 parser 499: // stack: context, name
1.211 paf 500: $$=$3; // stack: context, name, value
1.229 misha 501: O(*$$, OP::OP_CONSTRUCT_VALUE); /* value=pop; name=pop; context=pop; construct(context,name,value) */
1.81 paf 502: }
503: ;
1.149 parser 504: construct_round: '(' expr_value ')' {
1.206 paf 505: $$=N();
1.229 misha 506: O(*$$, OP::OP_PREPARE_TO_EXPRESSION);
1.149 parser 507: // stack: context, name
1.206 paf 508: P(*$$, *$2); // stack: context, name, value
1.229 misha 509: O(*$$, OP::OP_CONSTRUCT_EXPR); /* value=pop->as_expr_result; name=pop; context=pop; construct(context,name,value) */
1.81 paf 510: }
1.52 paf 511: ;
1.149 parser 512: construct_curly: '{' maybe_codes '}' {
513: // stack: context, name
1.206 paf 514: $$=N();
1.229 misha 515: OA(*$$, OP::OP_CURLY_CODE__CONSTRUCT, $2); /* code=pop; name=pop; context=pop; construct(context,name,junction(code)) */
1.149 parser 516: };
517:
1.55 paf 518: any_constructor_code_value:
1.261 moko 519: empty_value /* optimized $var[] case */
1.52 paf 520: | STRING /* optimized $var[STRING] case */
1.55 paf 521: | constructor_code_value /* $var[something complex] */
1.1 paf 522: ;
1.55 paf 523: constructor_code_value: constructor_code {
1.206 paf 524: $$=N();
1.229 misha 525: OA(*$$, OP::OP_OBJECT_POOL, $1); /* stack: empty write context */
1.183 paf 526: /* some code that writes to that context */
527: /* context=pop; stack: context.value() */
1.1 paf 528: };
1.55 paf 529: constructor_code: codes__excluding_sole_str_literal;
1.259 misha 530: codes__excluding_sole_str_literal: action | code codes { $$=$1; P(*$$, *$2); };
1.27 paf 531:
1.1 paf 532: /* call */
533:
1.66 paf 534: call: call_value {
1.238 misha 535: #ifdef OPTIMIZE_BYTECODE_CUT_REM_OPERATOR
536: if((*$1).count())
537: #endif
538: {
539: $$=$1; /* stack: value */
1.249 misha 540: if(!maybe_change_first_opcode(*$$, OP::OP_CONSTRUCT_OBJECT, /*=>*/OP::OP_CONSTRUCT_OBJECT__WRITE))
541: changetail_or_append(*$$,
542: OP::OP_CALL, true, /*=>*/ OP::OP_CALL__WRITE,
543: /*or */OP::OP_WRITE_VALUE); /* value=pop; wcontext.write(value) */
1.238 misha 544: }
1.66 paf 545: };
1.177 paf 546: call_value: '^' {
1.180 paf 547: PC.in_call_value=true;
1.177 paf 548: }
549: call_name {
1.180 paf 550: PC.in_call_value=false;
1.177 paf 551: }
1.154 parser 552: store_params EON { /* ^field.$method{vasya} */
1.238 misha 553: #ifdef OPTIMIZE_BYTECODE_CUT_REM_OPERATOR
1.242 misha 554: #ifdef OPTIMIZE_BYTECODE_GET_ELEMENT
1.238 misha 555: const String* operator_name=LA2S(*$3, 0, OP::OP_VALUE__GET_ELEMENT_OR_OPERATOR);
1.242 misha 556: #else
557: const String* operator_name=LA2S(*$3, 1);
558: #endif
1.249 misha 559: if(operator_name && *operator_name==REM_OPERATOR_NAME){
1.238 misha 560: $$=N();
561: } else
562: #endif
563: {
564: YYSTYPE params_code=$5;
565: if(params_code->count()==3) { // probably [] case. [OP::OP_VALUE+origin+Void]
566: if(Value* value=LA2V(*params_code)) // it is OP_VALUE+origin+value?
1.261 moko 567: if(const String * string=value->get_string())
568: if(string->is_empty()) // value is empty string?
569: params_code=0; // ^zzz[] case. don't append lone empty param.
1.238 misha 570: }
571: /* stack: context, method_junction */
1.249 misha 572:
573: YYSTYPE var_code=$3;
574: if(
575: var_code->count()==8
576: && (*var_code)[0].code==OP::OP_VALUE__GET_CLASS
577: && (*var_code)[3].code==OP::OP_PREPARE_TO_CONSTRUCT_OBJECT
578: && (*var_code)[4].code==OP::OP_VALUE
579: && (*var_code)[7].code==OP::OP_GET_ELEMENT
580: ){
581: yyval=N();
582: O(*$$, OP::OP_CONSTRUCT_OBJECT);
583: P(*$$, *var_code, 1/*offset*/, 2/*limit*/); // class name
584: P(*$$, *var_code, 5/*offset*/, 2/*limit*/); // constructor name
585: OA(*$$, params_code);
586: } else
587: {
588: $$=var_code; /* with_xxx,diving code; stack: context,method_junction */
589: OA(*$$, OP::OP_CALL, params_code); // method_frame=make frame(pop junction); ncontext=pop; call(ncontext,method_frame) stack: value
590: }
1.238 misha 591: }
1.1 paf 592: };
593:
1.43 paf 594: call_name: name_without_curly_rdive;
1.38 paf 595:
1.259 misha 596: store_params: store_param | store_params store_param { $$=$1; P(*$$, *$2); };
1.69 paf 597: store_param:
598: store_square_param
599: | store_round_param
600: | store_curly_param
1.31 paf 601: ;
1.210 paf 602: store_square_param: '[' {
1.211 paf 603: // allow ^call[ letters here any time ]
1.210 paf 604: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
605: } store_code_param_parts {
1.213 paf 606: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.259 misha 607: } ']' {$$=$3;};
608: store_round_param: '(' store_expr_param_parts ')' {$$=$2;};
609: store_curly_param: '{' store_curly_param_parts '}' {$$=$2;};
1.69 paf 610: store_code_param_parts:
611: store_code_param_part
1.259 misha 612: | store_code_param_parts ';' store_code_param_part { $$=$1; P(*$$, *$3); }
1.69 paf 613: ;
614: store_expr_param_parts:
615: store_expr_param_part
1.259 misha 616: | store_expr_param_parts ';' store_expr_param_part { $$=$1; P(*$$, *$3); }
1.69 paf 617: ;
1.94 paf 618: store_curly_param_parts:
619: store_curly_param_part
1.259 misha 620: | store_curly_param_parts ';' store_curly_param_part { $$=$1; P(*$$, *$3); }
1.94 paf 621: ;
1.120 paf 622: store_code_param_part: code_param_value {
1.32 paf 623: $$=$1;
1.120 paf 624: };
1.214 paf 625: store_expr_param_part: expr_value {
626: YYSTYPE expr_code=$1;
1.215 paf 627: if(expr_code->count()==3
1.234 misha 628: && (*expr_code)[0].code==OP::OP_VALUE) { // optimizing (double/bool/incidently 'string' too) case. [OP::OP_VALUE+origin+Double]. no evaluating
1.214 paf 629: $$=expr_code;
630: } else {
1.238 misha 631: YYSTYPE code=N();
1.229 misha 632: O(*code, OP::OP_PREPARE_TO_EXPRESSION);
1.214 paf 633: P(*code, *expr_code);
1.229 misha 634: O(*code, OP::OP_WRITE_EXPR_RESULT);
1.214 paf 635: $$=N();
1.229 misha 636: OA(*$$, OP::OP_EXPR_CODE__STORE_PARAM, code);
1.214 paf 637: }
1.69 paf 638: };
1.94 paf 639: store_curly_param_part: maybe_codes {
1.206 paf 640: $$=N();
1.229 misha 641: OA(*$$, OP::OP_CURLY_CODE__STORE_PARAM, $1);
1.94 paf 642: };
1.120 paf 643: code_param_value:
1.261 moko 644: empty_value /* optimized [;...] case */
1.120 paf 645: | STRING /* optimized [STRING] case */
646: | constructor_code_value /* [something complex] */
647: ;
1.1 paf 648:
649: /* name */
650:
1.259 misha 651: name_expr_dive_code: name_expr_value | name_path name_expr_value { $$=$1; P(*$$, *$2); };
1.1 paf 652:
1.259 misha 653: name_path: name_step | name_path name_step { $$=$1; P(*$$, *$2); };
1.1 paf 654: name_step: name_advance1 '.';
655: name_advance1: name_expr_value {
1.177 paf 656: // we know that name_advance1 not called from ^xxx context
657: // so we'll not check for operator call possibility as we do in name_advance2
658:
1.1 paf 659: /* stack: context */
660: $$=$1; /* stack: context,name */
1.229 misha 661: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 662: };
663: name_advance2: name_expr_value {
664: /* stack: context */
665: $$=$1; /* stack: context,name */
1.229 misha 666: O(*$$, OP::OP_GET_ELEMENT); /* name=pop; context=pop; stack: context.get_element(name) */
1.1 paf 667: }
1.4 paf 668: | STRING BOGUS
1.1 paf 669: ;
670: name_expr_value:
1.4 paf 671: STRING /* subname_is_const */
1.1 paf 672: | name_expr_subvar_value /* $subname_is_var_value */
1.160 parser 673: | name_expr_with_subvar_value /* xxx$part_of_subname_is_var_value */
1.166 parser 674: | name_square_code_value /* [codes] */
1.1 paf 675: ;
676: name_expr_subvar_value: '$' subvar_ref_name_rdive {
677: $$=$2;
1.229 misha 678: O(*$$, OP::OP_GET_ELEMENT);
1.1 paf 679: };
1.4 paf 680: name_expr_with_subvar_value: STRING subvar_get_writes {
1.238 misha 681: YYSTYPE code;
1.183 paf 682: {
1.206 paf 683: change_string_literal_to_write_string_literal(*(code=$1));
684: P(*code, *$2);
1.183 paf 685: }
1.206 paf 686: $$=N();
1.229 misha 687: OA(*$$, OP::OP_STRING_POOL, code);
1.1 paf 688: };
1.212 paf 689: name_square_code_value: '[' {
690: // allow $result_or_other_variable[ letters here any time ]
691: *reinterpret_cast<bool*>(&$$)=PC.explicit_result; PC.explicit_result=false;
692: } codes {
1.213 paf 693: PC.explicit_result=*reinterpret_cast<bool*>(&$2);
1.212 paf 694: } ']' {
1.206 paf 695: $$=N();
1.229 misha 696: OA(*$$, OP::OP_OBJECT_POOL, $3); /* stack: empty write context */
1.183 paf 697: /* some code that writes to that context */
698: /* context=pop; stack: context.value() */
1.160 parser 699: };
1.154 parser 700: subvar_ref_name_rdive: STRING {
1.206 paf 701: $$=N();
1.229 misha 702: O(*$$, OP::OP_WITH_READ);
1.206 paf 703: P(*$$, *$1);
1.1 paf 704: };
1.259 misha 705: subvar_get_writes: subvar__get_write | subvar_get_writes subvar__get_write { $$=$1; P(*$$, *$2); };
1.1 paf 706: subvar__get_write: '$' subvar_ref_name_rdive {
707: $$=$2;
1.229 misha 708: O(*$$, OP::OP_GET_ELEMENT__WRITE);
1.42 paf 709: };
710:
1.154 parser 711: class_prefix:
712: class_static_prefix
713: | class_constructor_prefix
714: ;
1.155 parser 715: class_static_prefix: STRING ':' {
716: $$=$1; // stack: class name string
1.206 paf 717: if(*LA2S(*$$) == BASE_NAME) { // pseudo BASE class
718: if(VStateless_class* base=PC.cclass->base_class()) {
719: change_string_literal_value(*$$, base->name());
1.189 paf 720: } else {
721: strcpy(PC.error, "no base class declared");
722: YYERROR;
723: }
724: }
1.238 misha 725: // optimized OP_VALUE+origin+string+OP_GET_CLASS => OP_VALUE__GET_CLASS+origin+string
1.259 misha 726: maybe_change_first_opcode(*$$, OP::OP_VALUE, OP::OP_VALUE__GET_CLASS);
1.155 parser 727: };
728: class_constructor_prefix: class_static_prefix ':' {
1.154 parser 729: $$=$1;
1.180 paf 730: if(!PC.in_call_value) {
1.154 parser 731: strcpy(PC.error, ":: not allowed here");
732: YYERROR;
733: }
1.229 misha 734: O(*$$, OP::OP_PREPARE_TO_CONSTRUCT_OBJECT);
1.1 paf 735: };
736:
1.53 paf 737:
1.56 paf 738: /* expr */
1.53 paf 739:
1.214 paf 740: expr_value: expr;
1.56 paf 741: expr:
1.214 paf 742: double_or_STRING
1.216 paf 743: | true_value
744: | false_value
1.64 paf 745: | get_value
1.66 paf 746: | call_value
1.259 misha 747: | '"' string_inside_quotes_value '"' { $$ = $2; }
748: | '\'' string_inside_quotes_value '\'' { $$ = $2; }
1.60 paf 749: | '(' expr ')' { $$ = $2; }
750: /* stack: operand // stack: @operand */
1.259 misha 751: | '-' expr %prec NUNARY { $$=$2; O(*$$, OP::OP_NEG); }
752: | '+' expr %prec NUNARY { $$=$2; }
753: | '~' expr { $$=$2; O(*$$, OP::OP_INV); }
754: | '!' expr { $$=$2; O(*$$, OP::OP_NOT); }
755: | "def" expr { $$=$2; O(*$$, OP::OP_DEF); }
756: | "in" expr { $$=$2; O(*$$, OP::OP_IN); }
757: | "-f" expr { $$=$2; O(*$$, OP::OP_FEXISTS); }
758: | "-d" expr { $$=$2; O(*$$, OP::OP_DEXISTS); }
1.60 paf 759: /* stack: a,b // stack: a@b */
1.259 misha 760: | expr '-' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_SUB); }
761: | expr '+' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_ADD); }
762: | expr '*' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MUL); }
763: | expr '/' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_DIV); }
764: | expr '%' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_MOD); }
765: | expr '\\' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_INTDIV); }
766: | expr "<<" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SL); }
767: | expr ">>" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_SR); }
768: | expr '&' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_AND); }
769: | expr '|' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_OR); }
770: | expr "!|" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_BIN_XOR); }
771: | expr "&&" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_AND); }
772: | expr "||" expr { $$=$1; OA(*$$, OP::OP_NESTED_CODE, $3); O(*$$, OP::OP_LOG_OR); }
773: | expr "!||" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_LOG_XOR); }
774: | expr '<' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LT); }
775: | expr '>' expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GT); }
776: | expr "<=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_LE); }
777: | expr ">=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_GE); }
778: | expr "==" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_EQ); }
779: | expr "!=" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_NUM_NE); }
780: | expr "lt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LT); }
781: | expr "gt" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GT); }
782: | expr "le" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_LE); }
783: | expr "ge" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_GE); }
784: | expr "eq" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_EQ); }
785: | expr "ne" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_STR_NE); }
786: | expr "is" expr { $$=$1; P(*$$, *$3); O(*$$, OP::OP_IS); }
1.56 paf 787: ;
1.214 paf 788:
789: double_or_STRING: STRING {
1.238 misha 790: // optimized OP_STRING => OP_VALUE for doubles
1.214 paf 791: maybe_change_string_literal_to_double_literal(*($$=$1));
792: };
1.55 paf 793:
1.65 paf 794: string_inside_quotes_value: maybe_codes {
1.238 misha 795: #ifdef OPTIMIZE_BYTECODE_STRING_POOL
796: // it brakes ^if(" 09 "){...}
797: YYSTYPE code=$1;
798: $$=N();
1.239 misha 799: if(code->count()==3 && maybe_change_first_opcode(*code, OP::OP_STRING__WRITE, OP::OP_VALUE)){
1.238 misha 800: // optimized OP_STRING__WRITE+origin+value => OP_VALUE+origin+value without starting OP_STRING_POOL
801: P(*$$, *code);
802: } else {
803: OA(*$$, OP::OP_STRING_POOL, code); /* stack: empty write context */
804: }
805: #else
1.206 paf 806: $$=N();
1.229 misha 807: OA(*$$, OP::OP_STRING_POOL, $1); /* stack: empty write context */
1.238 misha 808: #endif
1.183 paf 809: /* some code that writes to that context */
810: /* context=pop; stack: context.get_string() */
1.53 paf 811: };
1.1 paf 812:
1.27 paf 813: /* basics */
1.1 paf 814:
1.81 paf 815: write_string: STRING {
1.238 misha 816: // optimized OP_STRING+OP_WRITE_VALUE => OP_STRING__WRITE
1.259 misha 817: change_string_literal_to_write_string_literal(*($$=$1));
1.54 paf 818: };
819:
1.261 moko 820: empty_value: /* empty */ { $$=VL(/*we know that we will not change it*/const_cast<VString*>(&vempty), 0, 0, 0); }
1.259 misha 821: true_value: "true" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vtrue), 0, 0, 0); }
822: false_value: "false" { $$ = VL(/*we know that we will not change it*/const_cast<VBool*>(&vfalse), 0, 0, 0); }
1.216 paf 823:
1.259 misha 824: empty: /* empty */ { $$=N(); };
1.1 paf 825:
826: %%
1.105 paf 827: #endif
1.1 paf 828:
829: /*
830: 000$111(2222)00
831: 000$111{3333}00
1.9 paf 832: $,^: push,=0
1.1 paf 833: 1:( { break=pop
834: 2:( ) pop
835: 3:{ } pop
836:
837: 000^111(2222)4444{33333}4000
1.9 paf 838: $,^: push,=0
1.1 paf 839: 1:( { break=pop
840: 2:( )=4
841: 3:{ }=4
842: 4:[^({]=pop
843: */
844:
1.206 paf 845: inline void ungetc(Parse_control& pc, uint last_line_end_col) {
846: pc.source--;
847: if(pc.pos.col==0) {
848: --pc.pos.line; pc.pos.col=last_line_end_col;
849: } else
850: --pc.pos.col;
851:
852: }
853: static int yylex(YYSTYPE *lvalp, void *apc) {
854: register Parse_control& pc=*static_cast<Parse_control*>(apc);
855:
856: #define lexical_brackets_nestage pc.brackets_nestages[pc.ls_sp]
1.48 paf 857: #define RC {result=c; goto break2; }
1.1 paf 858:
1.206 paf 859: register int c;
860: int result;
1.1 paf 861:
1.206 paf 862: if(pc.pending_state) {
863: result=pc.pending_state;
864: pc.pending_state=0;
1.1 paf 865: return result;
866: }
867:
1.206 paf 868: const char *begin=pc.source;
869: Pos begin_pos=pc.pos;
1.91 paf 870: const char *end;
1.67 paf 871: int skip_analized=0;
1.50 paf 872: while(true) {
1.206 paf 873: c=*(end=(pc.source++));
874: // fprintf(stderr, "\nchar: %c %02X; nestage: %d, sp=%d", c, c, lexical_brackets_nestage, pc.sp);
1.1 paf 875:
1.208 paf 876: if(c=='\n')
1.206 paf 877: pc.pos_next_line();
1.208 paf 878: else
1.206 paf 879: pc.pos_next_c(c);
1.208 paf 880: // fprintf(stderr, "\nchar: %c file(%d:%d)", c, pc.pos.line, pc.pos.col);
1.73 paf 881:
1.208 paf 882: if(pc.pos.col==0+1 && c=='@') {
1.206 paf 883: if(pc.ls==LS_DEF_SPECIAL_BODY) {
1.175 paf 884: // @SPECIAL
885: // ...
886: // @<here =
1.206 paf 887: pop_LS(pc); // exiting from LS_DEF_SPECIAL_BODY state
1.175 paf 888: } // continuing checks
1.206 paf 889: if(pc.ls==LS_USER) {
890: push_LS(pc, LS_DEF_NAME);
1.171 parser 891: RC;
1.175 paf 892: } else // @ in first column inside some code [when could that be?]
1.171 parser 893: result=BAD_METHOD_DECL_START;
894: goto break2;
1.209 paf 895: }
896: if(c=='^') {
1.206 paf 897: if(pc.ls==LS_METHOD_AFTER) {
1.203 paf 898: // handle after-method situation
1.206 paf 899: pop_LS(pc);
1.203 paf 900: result=EON;
901: skip_analized=-1; // return to punctuation afterwards to assure it's literality
902: goto break2;
903: }
1.206 paf 904: switch(pc.ls) {
1.169 parser 905: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
906: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
907: case LS_VAR_NAME_SIMPLE_WITH_COLON:
908: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
909: case LS_VAR_NAME_CURLY:
910: case LS_METHOD_NAME:
1.194 paf 911: case LS_USER_COMMENT:
1.169 parser 912: case LS_DEF_COMMENT:
913: // no literals in names, please
914: break;
915: default:
1.206 paf 916: switch(*pc.source) {
1.165 parser 917: // ^escaping some punctuators
1.228 misha 918: case '^': case '$': case ';': case '@':
1.126 paf 919: case '(': case ')':
1.48 paf 920: case '[': case ']':
921: case '{': case '}':
1.172 parser 922: case '"': case ':':
1.40 paf 923: if(end!=begin) {
1.206 paf 924: if(!pc.string_start)
925: pc.string_start=begin_pos;
1.40 paf 926: // append piece till ^
1.206 paf 927: pc.string.append_strdup_know_length(begin, end-begin);
1.40 paf 928: }
1.63 paf 929: // reset piece 'begin' position & line
1.206 paf 930: begin=pc.source; // ->punctuation
931: begin_pos=pc.pos;
1.203 paf 932: // skip over _ after ^
1.206 paf 933: pc.source++; pc.pos.col++;
1.203 paf 934: // skip analysis = forced literal
935: continue;
1.114 paf 936:
937: // converting ^#HH into char(hex(HH))
938: case '#':
939: if(end!=begin) {
1.206 paf 940: if(!pc.string_start)
941: pc.string_start=begin_pos;
1.114 paf 942: // append piece till ^
1.206 paf 943: pc.string.append_strdup_know_length(begin, end-begin);
1.114 paf 944: }
945: // #HH ?
1.228 misha 946: if(pc.source[1] && isxdigit(pc.source[1]) && pc.source[2] && isxdigit(pc.source[2])) {
1.218 paf 947: char c=(char)(
1.206 paf 948: hex_value[(unsigned char)pc.source[1]]*0x10+
1.218 paf 949: hex_value[(unsigned char)pc.source[2]]);
1.206 paf 950: if(c==0) {
1.114 paf 951: result=BAD_HEX_LITERAL;
952: goto break2; // wrong hex value[no ^#00 chars allowed]: bail out
953: }
954: // append char(hex(HH))
1.206 paf 955: pc.string.append(c);
1.114 paf 956: // skip over ^#HH
1.206 paf 957: pc.source+=3;
958: pc.pos.col+=3;
1.114 paf 959: // reset piece 'begin' position & line
1.206 paf 960: begin=pc.source; // ->after ^#HH
961: begin_pos=pc.pos;
1.203 paf 962: // skip analysis = forced literal
1.114 paf 963: continue;
964: }
1.228 misha 965: // just escaped char
966: // reset piece 'begin' position & line
967: begin=pc.source;
968: begin_pos=pc.pos;
969: // skip over _ after ^
970: pc.source++; pc.pos.col++;
971: // skip analysis = forced literal
972: continue;
1.1 paf 973: }
1.169 parser 974: break;
1.203 paf 975: }
1.169 parser 976: }
1.113 paf 977: // #comment start skipping
1.206 paf 978: if(c=='#' && pc.pos.col==1) {
1.112 paf 979: if(end!=begin) {
1.206 paf 980: if(!pc.string_start)
981: pc.string_start=begin_pos;
1.112 paf 982: // append piece till #
1.206 paf 983: pc.string.append_strdup_know_length(begin, end-begin);
1.112 paf 984: }
985: // fall into COMMENT lexical state [wait for \n]
1.206 paf 986: push_LS(pc, LS_USER_COMMENT);
1.175 paf 987: continue;
1.112 paf 988: }
1.206 paf 989: switch(pc.ls) {
1.10 paf 990:
991: // USER'S = NOT OURS
1.1 paf 992: case LS_USER:
1.206 paf 993: case LS_NAME_SQUARE_PART: // name.[here].xxx
994: if(pc.trim_bof)
1.153 parser 995: switch(c) {
996: case '\n': case ' ': case '\t':
1.206 paf 997: begin=pc.source;
998: begin_pos=pc.pos;
1.152 parser 999: continue; // skip it
1.153 parser 1000: default:
1.206 paf 1001: pc.trim_bof=false;
1.152 parser 1002: }
1.48 paf 1003: switch(c) {
1004: case '$':
1.206 paf 1005: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1006: RC;
1007: case '^':
1.206 paf 1008: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1009: RC;
1.166 parser 1010: case ']':
1.206 paf 1011: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 1012: if(--lexical_brackets_nestage==0) {// $name.[co<]?>de<]?>
1.206 paf 1013: pop_LS(pc); // $name.[co<]>de<]!>
1.166 parser 1014: RC;
1015: }
1.160 parser 1016: break;
1.166 parser 1017: case '[': // $name.[co<[>de]
1.206 paf 1018: if(pc.ls==LS_NAME_SQUARE_PART)
1.166 parser 1019: lexical_brackets_nestage++;
1.161 parser 1020: break;
1.112 paf 1021: }
1.209 paf 1022: if(pc.explicit_result && c)
1023: switch(c) {
1024: case '\n': case ' ': case '\t':
1025: begin=pc.source;
1026: begin_pos=pc.pos;
1027: continue; // skip it
1028: default:
1029: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
1030: goto break2;
1031: }
1.112 paf 1032: break;
1033:
1034: // #COMMENT
1.194 paf 1035: case LS_USER_COMMENT:
1.112 paf 1036: if(c=='\n') {
1037: // skip comment
1.206 paf 1038: begin=pc.source;
1039: begin_pos=pc.pos;
1.112 paf 1040:
1.206 paf 1041: pop_LS(pc);
1.112 paf 1042: continue;
1.1 paf 1043: }
1.48 paf 1044: break;
1045:
1046: // STRING IN EXPRESSION
1.145 parser 1047: case LS_EXPRESSION_STRING_QUOTED:
1048: case LS_EXPRESSION_STRING_APOSTROFED:
1.48 paf 1049: switch(c) {
1050: case '"':
1.145 parser 1051: case '\'':
1052: if(
1.206 paf 1053: pc.ls == LS_EXPRESSION_STRING_QUOTED && c=='"' ||
1054: pc.ls == LS_EXPRESSION_STRING_APOSTROFED && c=='\'') {
1055: pop_LS(pc); //"abc". | 'abc'.
1.145 parser 1056: RC;
1057: }
1058: break;
1.48 paf 1059: case '$':
1.206 paf 1060: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1061: RC;
1062: case '^':
1.206 paf 1063: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1064: RC;
1.10 paf 1065: }
1066: break;
1067:
1068: // METHOD DEFINITION
1069: case LS_DEF_NAME:
1.48 paf 1070: switch(c) {
1071: case '[':
1.206 paf 1072: pc.ls=LS_DEF_PARAMS;
1.48 paf 1073: RC;
1074: case '\n':
1.206 paf 1075: pc.ls=LS_DEF_SPECIAL_BODY;
1.48 paf 1076: RC;
1.10 paf 1077: }
1078: break;
1.48 paf 1079:
1.10 paf 1080: case LS_DEF_PARAMS:
1.48 paf 1081: switch(c) {
1.192 paf 1082: case '$': // common error
1.193 paf 1083: result=BAD_METHOD_PARAMETER_NAME_CHARACTER;
1084: goto break2;
1.48 paf 1085: case ';':
1086: RC;
1087: case ']':
1.206 paf 1088: pc.ls=*pc.source=='['?LS_DEF_LOCALS:LS_DEF_COMMENT;
1.48 paf 1089: RC;
1.49 paf 1090: case '\n': // wrong. bailing out
1.206 paf 1091: pop_LS(pc);
1.48 paf 1092: RC;
1.10 paf 1093: }
1094: break;
1.48 paf 1095:
1.10 paf 1096: case LS_DEF_LOCALS:
1.48 paf 1097: switch(c) {
1098: case '[':
1099: case ';':
1100: RC;
1101: case ']':
1.206 paf 1102: pc.ls=LS_DEF_COMMENT;
1.48 paf 1103: RC;
1104: case '\n': // wrong. bailing out
1.206 paf 1105: pop_LS(pc);
1.48 paf 1106: RC;
1.10 paf 1107: }
1108: break;
1.48 paf 1109:
1.10 paf 1110: case LS_DEF_COMMENT:
1111: if(c=='\n') {
1.206 paf 1112: pop_LS(pc);
1.48 paf 1113: RC;
1.37 paf 1114: }
1115: break;
1116:
1.48 paf 1117: case LS_DEF_SPECIAL_BODY:
1.175 paf 1118: if(c=='\n')
1.48 paf 1119: RC;
1120: break;
1121:
1122: // (EXPRESSION)
1.69 paf 1123: case LS_VAR_ROUND:
1124: case LS_METHOD_ROUND:
1.48 paf 1125: switch(c) {
1126: case ')':
1127: if(--lexical_brackets_nestage==0)
1.206 paf 1128: if(pc.ls==LS_METHOD_ROUND) // method round param ended
1129: pc.ls=LS_METHOD_AFTER; // look for method end
1130: else // pc.ls==LS_VAR_ROUND // variable constructor ended
1131: pop_LS(pc); // return to normal life
1.48 paf 1132: RC;
1.194 paf 1133: case '#': // comment start skipping
1134: if(end!=begin) {
1.206 paf 1135: if(!pc.string_start)
1136: pc.string_start=begin_pos;
1.194 paf 1137: // append piece till #
1.206 paf 1138: pc.string.append_strdup_know_length(begin, end-begin);
1.194 paf 1139: }
1140: // fall into COMMENT lexical state [wait for \n]
1.206 paf 1141: push_LS(pc, LS_EXPRESSION_COMMENT);
1.194 paf 1142: lexical_brackets_nestage=1;
1143: continue;
1.48 paf 1144: case '$':
1.206 paf 1145: push_LS(pc, LS_EXPRESSION_VAR_NAME_WITH_COLON);
1.48 paf 1146: RC;
1147: case '^':
1.206 paf 1148: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1149: RC;
1150: case '(':
1151: lexical_brackets_nestage++;
1152: RC;
1.67 paf 1153: case '-':
1.206 paf 1154: switch(*pc.source) {
1.127 paf 1155: case 'f': // -f
1.67 paf 1156: skip_analized=1;
1157: result=FEXISTS;
1.127 paf 1158: goto break2;
1159: case 'd': // -d
1160: skip_analized=1;
1161: result=DEXISTS;
1162: goto break2;
1.191 paf 1163: default: // minus
1.67 paf 1164: result=c;
1.127 paf 1165: goto break2;
1166: }
1.67 paf 1167: goto break2;
1.173 paf 1168: case '+': case '*': case '/': case '%': case '\\':
1.58 paf 1169: case '~':
1.48 paf 1170: case ';':
1171: RC;
1.193 paf 1172: case '&': case '|':
1.206 paf 1173: if(*pc.source==c) { // && ||
1.193 paf 1174: result=c=='&'?LAND:LOR;
1.67 paf 1175: skip_analized=1;
1.58 paf 1176: } else
1177: result=c;
1178: goto break2;
1.193 paf 1179: case '!':
1.206 paf 1180: switch(pc.source[0]) {
1.193 paf 1181: case '|': // !| !||
1182: skip_analized=1;
1.206 paf 1183: if(pc.source[1]=='|') {
1.193 paf 1184: skip_analized++;
1185: result=LXOR;
1186: } else
1187: result=NXOR;
1188: goto break2;
1189: case '=': // !=
1190: skip_analized=1;
1191: result=NNE;
1192: goto break2;
1193: }
1194: RC;
1.195 paf 1195:
1196: case '<': // <<, <=, <
1.206 paf 1197: switch(*pc.source) {
1.195 paf 1198: case '<': // <[<]
1199: skip_analized=1; result=NSL; break;
1200: case '=': // <[=]
1201: skip_analized=1; result=NLE; break;
1202: default: // <[]
1203: result=c; break;
1204: }
1205: goto break2;
1206: case '>': // >>, >=, >
1.206 paf 1207: switch(*pc.source) {
1.195 paf 1208: case '>': // >[>]
1209: skip_analized=1; result=NSR; break;
1210: case '=': // >[=]
1211: skip_analized=1; result=NGE; break;
1212: default: // >[]
1213: result=c; break;
1214: }
1215: goto break2;
1216: case '=': // ==
1.206 paf 1217: switch(*pc.source) {
1.195 paf 1218: case '=': // =[=]
1219: skip_analized=1; result=NEQ; break;
1220: default: // =[]
1221: result=c; break; // not used now
1222: }
1.58 paf 1223: goto break2;
1.195 paf 1224:
1.48 paf 1225: case '"':
1.206 paf 1226: push_LS(pc, LS_EXPRESSION_STRING_QUOTED);
1.145 parser 1227: RC;
1228: case '\'':
1.206 paf 1229: push_LS(pc, LS_EXPRESSION_STRING_APOSTROFED);
1.48 paf 1230: RC;
1.50 paf 1231: case 'l': case 'g': case 'e': case 'n':
1.51 paf 1232: if(end==begin) // right after whitespace
1.206 paf 1233: if(isspace(pc.source[1])) {
1234: switch(*pc.source) {
1.117 paf 1235: // case '?': // ok [and bad cases, yacc would bark at them]
1236: case 't': // lt gt [et nt]
1237: result=c=='l'?SLT:c=='g'?SGT:BAD_STRING_COMPARISON_OPERATOR;
1238: skip_analized=1;
1239: goto break2;
1240: case 'e': // le ge ne [ee]
1241: result=c=='l'?SLE:c=='g'?SGE:c=='n'?SNE:BAD_STRING_COMPARISON_OPERATOR;
1242: skip_analized=1;
1243: goto break2;
1244: case 'q': // eq [lq gq nq]
1245: result=c=='e'?SEQ:BAD_STRING_COMPARISON_OPERATOR;
1246: skip_analized=1;
1247: goto break2;
1248: }
1.67 paf 1249: }
1250: break;
1251: case 'i':
1252: if(end==begin) // right after whitespace
1.206 paf 1253: if(isspace(pc.source[1])) {
1254: switch(pc.source[0]) {
1.117 paf 1255: case 'n': // in
1.95 paf 1256: skip_analized=1;
1257: result=IN;
1258: goto break2;
1.117 paf 1259: case 's': // is
1.95 paf 1260: skip_analized=1;
1261: result=IS;
1262: goto break2;
1263: }
1.67 paf 1264: }
1265: break;
1266: case 'd':
1267: if(end==begin) // right after whitespace
1.206 paf 1268: if(pc.source[0]=='e' && pc.source[1]=='f') { // def
1.225 misha 1269: switch(pc.source[2]){
1270: case ' ': case '\t': case '\n': case '"': case '\'': case '^': case '$': // non-quoted string without whitespace after 'def' is not allowed
1271: skip_analized=2;
1272: result=DEF;
1273: goto break2;
1274: }
1275: // error: incorrect char after 'def'
1.50 paf 1276: }
1.48 paf 1277: break;
1.216 paf 1278: case 't':
1279: if(end==begin) // right after whitespace
1.225 misha 1280: if(pc.source[0]=='r' && pc.source[1]=='u' && pc.source[2]=='e') { // true
1.216 paf 1281: skip_analized=3;
1282: result=LITERAL_TRUE;
1283: goto break2;
1284: }
1285: break;
1286: case 'f':
1287: if(end==begin) // right after whitespace
1.225 misha 1288: if(pc.source[0]=='a' && pc.source[1]=='l' && pc.source[2]=='s' && pc.source[3]=='e') { // false
1.216 paf 1289: skip_analized=4;
1290: result=LITERAL_FALSE;
1291: goto break2;
1292: }
1293: break;
1.48 paf 1294: case ' ': case '\t': case '\n':
1.63 paf 1295: if(end!=begin) { // there were a string after previous operator?
1296: result=0; // return that string
1297: goto break2;
1.48 paf 1298: }
1.63 paf 1299: // that's a leading|traling space or after-operator-space
1300: // ignoring it
1301: // reset piece 'begin' position & line
1.206 paf 1302: begin=pc.source; // after whitespace char
1303: begin_pos=pc.pos;
1.48 paf 1304: continue;
1.1 paf 1305: }
1306: break;
1.194 paf 1307: case LS_EXPRESSION_COMMENT:
1308: if(c=='(')
1309: lexical_brackets_nestage++;
1310:
1.206 paf 1311: switch(*pc.source) {
1.194 paf 1312: case '\n': case ')':
1.206 paf 1313: if(*pc.source==')')
1.194 paf 1314: if(--lexical_brackets_nestage!=0)
1315: continue;
1316:
1317: // skip comment
1.206 paf 1318: begin=pc.source;
1319: begin_pos=pc.pos;
1.194 paf 1320:
1.206 paf 1321: pop_LS(pc);
1.194 paf 1322: continue;
1323: }
1324: break;
1.1 paf 1325:
1.10 paf 1326: // VARIABLE GET/PUT/WITH
1.166 parser 1327: case LS_VAR_NAME_SIMPLE_WITH_COLON:
1328: case LS_VAR_NAME_SIMPLE_WITHOUT_COLON:
1329: case LS_EXPRESSION_VAR_NAME_WITH_COLON:
1330: case LS_EXPRESSION_VAR_NAME_WITHOUT_COLON:
1331: if(
1.206 paf 1332: pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON ||
1333: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.181 paf 1334: // name in expr ends also before
1.48 paf 1335: switch(c) {
1.181 paf 1336: // expression minus
1.92 paf 1337: case '-':
1.181 paf 1338: // expression integer division
1339: case '\\':
1.206 paf 1340: pop_LS(pc);
1341: pc.ungetc();
1.48 paf 1342: result=EON;
1343: goto break2;
1344: }
1345: }
1.166 parser 1346: if(
1.206 paf 1347: pc.ls==LS_VAR_NAME_SIMPLE_WITHOUT_COLON ||
1348: pc.ls==LS_EXPRESSION_VAR_NAME_WITHOUT_COLON) {
1.142 parser 1349: // name already has ':', stop before next
1350: switch(c) {
1351: case ':':
1.206 paf 1352: pop_LS(pc);
1353: pc.ungetc();
1.142 parser 1354: result=EON;
1355: goto break2;
1356: }
1357: }
1.48 paf 1358: switch(c) {
1359: case 0:
1360: case ' ': case '\t': case '\n':
1361: case ';':
1.126 paf 1362: case ']': case '}': case ')':
1363: case '"': case '\'':
1.139 parser 1364: case '<': case '>': // these stand for HTML brackets AND expression binary ops
1.253 misha 1365: case '+': case '*': case '/': case '\\': case '%':
1.92 paf 1366: case '&': case '|':
1367: case '=': case '!':
1.99 paf 1368: // common delimiters
1.190 paf 1369: case ',': case '?': case '#':
1.220 paf 1370: // mysql column separators
1371: case '`':
1.139 parser 1372: // before call
1373: case '^':
1.206 paf 1374: pop_LS(pc);
1375: pc.ungetc();
1.13 paf 1376: result=EON;
1.1 paf 1377: goto break2;
1.48 paf 1378: case '[':
1.162 parser 1379: // $name.<[>code]
1.206 paf 1380: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1381: end[-1]=='$'/*was start of get*/ ||
1382: end[-1]==':'/*was class name delim */ ||
1383: end[-1]=='.'/*was name delim */
1.162 parser 1384: )) {
1.206 paf 1385: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1386: lexical_brackets_nestage=1;
1387: RC;
1388: }
1.206 paf 1389: pc.ls=LS_VAR_SQUARE;
1.1 paf 1390: lexical_brackets_nestage=1;
1.48 paf 1391: RC;
1392: case '{':
1393: if(begin==end) { // ${name}, no need of EON, switching LS
1.206 paf 1394: pc.ls=LS_VAR_NAME_CURLY;
1.48 paf 1395: } else {
1.206 paf 1396: pc.ls=LS_VAR_CURLY;
1.48 paf 1397: lexical_brackets_nestage=1;
1398: }
1.69 paf 1399:
1.48 paf 1400: RC;
1401: case '(':
1.206 paf 1402: pc.ls=LS_VAR_ROUND;
1.1 paf 1403: lexical_brackets_nestage=1;
1.48 paf 1404: RC;
1405: case '.': // name part delim
1406: case '$': // name part subvar
1.160 parser 1407: case ':': // class<:>name
1.166 parser 1408: // go to _WITHOUT_COLON state variant...
1.206 paf 1409: if(pc.ls==LS_VAR_NAME_SIMPLE_WITH_COLON)
1410: pc.ls=LS_VAR_NAME_SIMPLE_WITHOUT_COLON;
1411: else if(pc.ls==LS_EXPRESSION_VAR_NAME_WITH_COLON)
1412: pc.ls=LS_EXPRESSION_VAR_NAME_WITHOUT_COLON;
1.166 parser 1413: // ...stop before next ':'
1.48 paf 1414: RC;
1.1 paf 1415: }
1416: break;
1.48 paf 1417:
1.1 paf 1418: case LS_VAR_NAME_CURLY:
1.48 paf 1419: switch(c) {
1.162 parser 1420: case '[':
1.166 parser 1421: // ${name.<[>code]}
1.206 paf 1422: push_LS(pc, LS_NAME_SQUARE_PART);
1.160 parser 1423: lexical_brackets_nestage=1;
1424: RC;
1.48 paf 1425: case '}': // ${name} finished, restoring LS
1.206 paf 1426: pop_LS(pc);
1.48 paf 1427: RC;
1428: case '.': // name part delim
1429: case '$': // name part subvar
1430: case ':': // ':name' or 'class:name'
1431: RC;
1.1 paf 1432: }
1433: break;
1.48 paf 1434:
1435: case LS_VAR_SQUARE:
1436: switch(c) {
1437: case '$':
1.206 paf 1438: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1439: RC;
1440: case '^':
1.206 paf 1441: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1442: RC;
1443: case ']':
1.1 paf 1444: if(--lexical_brackets_nestage==0) {
1.206 paf 1445: pop_LS(pc);
1.48 paf 1446: RC;
1.1 paf 1447: }
1.48 paf 1448: break;
1449: case ';': // operator_or_fmt;value delim
1450: RC;
1451: case '[':
1452: lexical_brackets_nestage++;
1453: break;
1.1 paf 1454: }
1455: break;
1.48 paf 1456:
1.1 paf 1457: case LS_VAR_CURLY:
1.48 paf 1458: switch(c) {
1459: case '$':
1.206 paf 1460: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1461: RC;
1462: case '^':
1.206 paf 1463: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1464: RC;
1465: case '}':
1.1 paf 1466: if(--lexical_brackets_nestage==0) {
1.206 paf 1467: pop_LS(pc);
1.48 paf 1468: RC;
1.1 paf 1469: }
1.48 paf 1470: break;
1471: case '{':
1.1 paf 1472: lexical_brackets_nestage++;
1.48 paf 1473: break;
1474: }
1.1 paf 1475: break;
1476:
1.10 paf 1477: // METHOD CALL
1.1 paf 1478: case LS_METHOD_NAME:
1.48 paf 1479: switch(c) {
1480: case '[':
1.166 parser 1481: // ^name.<[>code].xxx
1.206 paf 1482: if(pc.pos.col>1/*not first column*/ && (
1.163 parser 1483: end[-1]=='^'/*was start of call*/ || // never, ^[ is literal...
1484: end[-1]==':'/*was class name delim */ ||
1485: end[-1]=='.'/*was name delim */
1.162 parser 1486: )) {
1.206 paf 1487: push_LS(pc, LS_NAME_SQUARE_PART);
1.162 parser 1488: lexical_brackets_nestage=1;
1489: RC;
1490: }
1.206 paf 1491: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1492: lexical_brackets_nestage=1;
1.48 paf 1493: RC;
1494: case '{':
1.206 paf 1495: pc.ls=LS_METHOD_CURLY;
1.1 paf 1496: lexical_brackets_nestage=1;
1.48 paf 1497: RC;
1.69 paf 1498: case '(':
1.206 paf 1499: pc.ls=LS_METHOD_ROUND;
1.69 paf 1500: lexical_brackets_nestage=1;
1501: RC;
1.48 paf 1502: case '.': // name part delim
1503: case '$': // name part subvar
1504: case ':': // ':name' or 'class:name'
1.170 parser 1505: case '^': // ^abc^xxx wrong. bailing out
1506: case ']': case '}': case ')': // ^abc]}) wrong. bailing out
1.207 paf 1507: case ' ': // ^if ( wrong. bailing out
1.48 paf 1508: RC;
1.1 paf 1509: }
1510: break;
1.48 paf 1511:
1512: case LS_METHOD_SQUARE:
1513: switch(c) {
1514: case '$':
1.206 paf 1515: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1516: RC;
1517: case '^':
1.206 paf 1518: push_LS(pc, LS_METHOD_NAME);
1.48 paf 1519: RC;
1520: case ';': // param delim
1521: RC;
1522: case ']':
1.1 paf 1523: if(--lexical_brackets_nestage==0) {
1.206 paf 1524: pc.ls=LS_METHOD_AFTER;
1.48 paf 1525: RC;
1.1 paf 1526: }
1.48 paf 1527: break;
1528: case '[':
1.1 paf 1529: lexical_brackets_nestage++;
1.48 paf 1530: break;
1531: }
1.1 paf 1532: break;
1.48 paf 1533:
1.1 paf 1534: case LS_METHOD_CURLY:
1.48 paf 1535: switch(c) {
1536: case '$':
1.206 paf 1537: push_LS(pc, LS_VAR_NAME_SIMPLE_WITH_COLON);
1.48 paf 1538: RC;
1539: case '^':
1.206 paf 1540: push_LS(pc, LS_METHOD_NAME);
1.94 paf 1541: RC;
1542: case ';': // param delim
1.48 paf 1543: RC;
1544: case '}':
1.1 paf 1545: if(--lexical_brackets_nestage==0) {
1.206 paf 1546: pc.ls=LS_METHOD_AFTER;
1.48 paf 1547: RC;
1.1 paf 1548: }
1.48 paf 1549: break;
1550: case '{':
1.1 paf 1551: lexical_brackets_nestage++;
1.48 paf 1552: break;
1553: }
1.209 paf 1554: if(pc.explicit_result && c)
1555: switch(c) {
1556: case '\n': case ' ': case '\t':
1557: begin=pc.source;
1558: begin_pos=pc.pos;
1559: continue; // skip it
1560: default:
1561: result=BAD_NONWHITESPACE_CHARACTER_IN_EXPLICIT_RESULT_MODE;
1562: goto break2;
1563: }
1.1 paf 1564: break;
1.48 paf 1565:
1.1 paf 1566: case LS_METHOD_AFTER:
1.69 paf 1567: if(c=='[') {/* ][ }[ )[ */
1.206 paf 1568: pc.ls=LS_METHOD_SQUARE;
1.1 paf 1569: lexical_brackets_nestage=1;
1.48 paf 1570: RC;
1.1 paf 1571: }
1.69 paf 1572: if(c=='{') {/* ]{ }{ ){ */
1.206 paf 1573: pc.ls=LS_METHOD_CURLY;
1.69 paf 1574: lexical_brackets_nestage=1;
1575: RC;
1576: }
1577: if(c=='(') {/* ]( }( )( */
1.206 paf 1578: pc.ls=LS_METHOD_ROUND;
1.1 paf 1579: lexical_brackets_nestage=1;
1.48 paf 1580: RC;
1.1 paf 1581: }
1.206 paf 1582: pop_LS(pc);
1583: pc.ungetc();
1.13 paf 1584: result=EON;
1.1 paf 1585: goto break2;
1586: }
1.9 paf 1587: if(c==0) {
1.1 paf 1588: result=-1;
1589: break;
1590: }
1591: }
1592:
1593: break2:
1.59 paf 1594: if(end!=begin) { // there is last piece?
1.258 misha 1595: if(c=='@' || c==0) // we are before LS_DEF_NAME or EOF?
1596: while(end!=begin && end[-1]=='\n') // trim all empty lines before LS_DEF_NAME and EOF
1.137 parser 1597: end--;
1.206 paf 1598: if(end!=begin && pc.ls!=LS_USER_COMMENT) { // last piece still alive and not comment?
1599: if(!pc.string_start)
1600: pc.string_start=begin_pos;
1.59 paf 1601: // append it
1.206 paf 1602: pc.string.append_strdup_know_length(begin, end-begin);
1.30 paf 1603: }
1.59 paf 1604: }
1.206 paf 1605: if(!pc.string.is_empty()) { // something accumulated?
1606: // create STRING value: array of OP_VALUE+origin+vstring
1607: *lvalp=VL(
1608: new VString(*new String(pc.string, String::L_CLEAN)),
1609: pc.file_no, pc.string_start.line, pc.string_start.col);
1.10 paf 1610: // new pieces storage
1.206 paf 1611: pc.string.clear();
1612: pc.string_start.clear();
1.58 paf 1613: // make current result be pending for next call, return STRING for now
1.206 paf 1614: pc.pending_state=result; result=STRING;
1.58 paf 1615: }
1.67 paf 1616: if(skip_analized) {
1.206 paf 1617: pc.source+=skip_analized; pc.pos.col+=skip_analized;
1.1 paf 1618: }
1.58 paf 1619: return result;
1.1 paf 1620: }
1621:
1.264 moko 1622: static int real_yyerror(Parse_control *pc, const char *s) { // Called by yyparse on error
1.114 paf 1623: strncpy(PC.error, s, MAX_STRING);
1.1 paf 1624: return 1;
1.110 paf 1625: }
1.1 paf 1626:
1.110 paf 1627: static void yyprint(FILE *file, int type, YYSTYPE value) {
1628: if(type==STRING)
1.206 paf 1629: fprintf(file, " \"%s\"", LA2S(*value)->cstr());
1.110 paf 1630: }
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