2 /* This file is part of NIT ( http://www.nitlanguage.org ).
4 * Copyright 2008-2009 Jean Privat <jean@pryen.org>
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
19 /* This grammar defines the NIT language. */
20 Package org.nitlanguage.gen;
22 /*****************************************************************************/
24 /*****************************************************************************/
27 lowercase = ['a' .. 'z'];
28 uppercase = ['A' .. 'Z'];
30 hexdigit = ['0'..'9'] | ['a'..'f'] | ['A'..'F'] | '_';
31 bindigit = '0' | '1' | '_';
32 octdigit = ['0' .. '7'] | '_';
33 letter = lowercase | uppercase | digit | '_';
38 any = [all - [cr + lf]];
39 eol_helper = cr lf | cr | lf; // This takes care of different platforms
41 // characers inside strings and super-strings (atomaton powaa)
43 = [any - [['"' + '{'] + '\']]
53 sstr_body = sstr_char*;
55 long_str_char = str_char | cr | lf;
57 // because no substraction in sablecc3, complex long strings are difficult to express
60 ls12 = ls1? (ls2 ls1)* ls2?;
66 long_str_body = long_str_part*;
67 lsend1 = ls2? (ls1 ls2)* '"""' '"'*;
68 lsend2 = ls1? (ls2 ls1)* '{{{' '{'*;
70 long_sstr_char = sstr_char | cr | lf;
74 | ''' ''' long_sstr_char
77 long_sstr_body = long_sstr_part*;
85 extern_code_body = extern_code_char*;
87 /*****************************************************************************/
89 /*****************************************************************************/
93 /*****************************************************************************/
95 /*****************************************************************************/
100 comment = '#' any* eol_helper?;
102 kwpackage = 'package';
106 kwabstract = 'abstract';
107 kwinterface = 'interface';
108 kwenum = 'universal'|'enum';
119 kwprotected = 'protected';
120 kwprivate = 'private';
121 kwintrude = 'intrude';
132 kwimplies = 'implies';
134 kwcontinue = 'continue';
147 kwnullable = 'nullable';
151 kwdebug = '__debug__';
198 classid = uppercase letter*;
199 id = lowercase letter*;
200 attrid = '_' lowercase letter*;
203 hex_number = ('0x' | '0X') hexdigit+;
204 bin_number = ('0b' | '0B') bindigit+;
205 oct_number = ('0o' | '0O') octdigit+;
206 float = digit* '.' digit+;
207 string = '"' str_body '"' | '"' '"' '"' long_str_body lsend1 | ''' ''' ''' long_sstr_body ''' ''' ''';
208 start_string = '"' str_body '{' | '"' '"' '"' long_str_body lsend2;
209 mid_string = '}' str_body '{' | '}' '}' '}' long_str_body lsend2;
210 end_string = '}' str_body '"' | '}' '}' '}' long_str_body lsend1;
211 char = (''' [[any - '''] - '\'] ''') | (''' '\' any ''');
212 bad_string = ('"'|'}') str_body | '"' '"' '"' long_str_body | ''' ''' ''' long_sstr_body;
213 bad_char = ''' '\'? any;
215 extern_code_segment = '`' '{' extern_code_body '`' '}';
217 /*****************************************************************************/
219 /*****************************************************************************/
223 /*****************************************************************************/
225 /*****************************************************************************/
227 /* MODULES *******************************************************************/
229 = moduledecl? [imports]:import* [extern_bodies]:extern_code_body* [classdefs]:topdef* implicit_main_class {-> New module(moduledecl, [imports.import], [extern_bodies.extern_code_block], [classdefs.classdef,implicit_main_class.classdef])};
232 = [doc]:nd redef visibility kwmodule no module_name annotation_withend [n2]:n1 {-> New moduledecl(doc.doc, redef.kwredef, visibility, kwmodule, module_name, annotation_withend.annotations)};
235 = {std} [doc]:nd redef visibility kwimport no module_name annotation_withend [n2]:n1 {-> New import.std(visibility, kwimport, module_name, annotation_withend.annotations)}
236 | {no} [doc]:nd redef visibility kwimport no kwend [n2]:n1 {-> New import.no(visibility, kwimport, kwend)}
240 = {classdef} classdef {-> classdef}
241 | propdef_toplevel n1 {-> New classdef.top([propdef_toplevel.propdef])}
244 implicit_main_class {-> classdef?}
245 = implicit_main_meth {-> New classdef.main([implicit_main_meth.propdef])}
246 | {null} n? {-> Null}
248 implicit_main_meth {-> propdef}
249 = [doc]:nd stmts {-> New propdef.main_meth(Null, stmts.expr)}
250 | {n} [doc]:nd stmtsn {-> New propdef.main_meth(Null, stmtsn.expr)}
253 /* CLASSES *******************************************************************/
255 = [doc]:nd redef visibility classkind no qclassid extern_code_block? propdefs kwend {-> New classdef.std(doc.doc, redef.kwredef, visibility, classkind, qclassid.classid, Null, [], Null, extern_code_block, [propdefs.propdef], kwend)}
256 | {for} [doc]:nd redef visibility classkind no qclassid obra [n2]:no formaldefs cbra extern_code_block? propdefs kwend {-> New classdef.std(doc.doc, redef.kwredef, visibility, classkind, qclassid.classid, obra, [formaldefs.formaldef], cbra, extern_code_block, [propdefs.propdef], kwend)}
260 = kwredef? {-> kwredef};
263 | {abstract} kwabstract kwclass
264 | {interface} kwinterface
266 | {extern} kwextern kwclass
269 formaldefs {-> formaldef*}
270 = formaldef formaldefs_tail* {-> [formaldef, formaldefs_tail.formaldef]}
273 formaldefs_tail {-> formaldef}
274 = comma no formaldef {-> formaldef};
276 = classid annotations? typing_o no {-> New formaldef(classid, typing_o.type, annotations)};
278 superclass {-> propdef}
279 = {super} [doc]:nd redef visibility kwsuper [n2]:no type annotation_withend {-> New propdef.super(doc.doc, redef.kwredef, visibility, kwsuper, type, annotation_withend.annotations)}
282 propdefs {-> propdef*}
283 = propdefn+ no {-> [propdefn.propdef]}
284 | {super} superclass {-> [superclass.propdef]}
287 propdefn {-> propdef}
288 = propdef n1 {-> propdef.propdef}
290 propdef~toplevel {-> propdef}
291 = {meth} [doc]:nd redef visibility kwmeth qmethid signature annotation_noend? kwdo stmtso kwend_o {-> New propdef.meth(doc.doc, redef.kwredef, visibility, kwmeth, Null, Null, qmethid.methid, signature, annotation_noend.annotations, Null, Null, kwdo, stmtso.expr, kwend_o.kwend)}
292 | {nobody} [doc]:nd redef visibility kwmeth qmethid signature annotation_withend_nonull {-> New propdef.meth(doc.doc, redef.kwredef, visibility, kwmeth, Null, Null, qmethid.methid, signature.signature, annotation_withend_nonull.annotations, Null, Null, Null, Null, Null)}
293 !toplevel| {intern_new} [doc]:nd redef visibility kwnew qmethid? signature annotation_withend_nonull {-> New propdef.meth(doc.doc, redef.kwredef, visibility, Null, Null, kwnew, qmethid.methid, signature, annotation_withend_nonull.annotations, Null, Null, Null, Null, Null)}
294 !toplevel| {new} [doc]:nd redef visibility kwnew qmethid? signature annotation_noend? kwdo stmtso kwend_o {-> New propdef.meth(doc.doc, redef.kwredef, visibility, Null, Null, kwnew, qmethid.methid, signature, annotation_noend.annotations, Null, Null, kwdo, stmtso.expr, kwend_o.kwend)}
295 | {extern_implicit} [doc]:nd redef visibility kwmeth qmethid signature annotation_noend? extern_calls extern_code_block {-> New propdef.meth(doc.doc, redef.kwredef, visibility, kwmeth, Null, Null, qmethid.methid, signature.signature, annotation_noend.annotations, extern_calls, extern_code_block, Null, Null, Null)}
296 !toplevel| {var3} [doc]:nd redef visibility kwvar id typing_o annotation_withend {-> New propdef.attr(doc.doc, redef.kwredef, visibility, kwvar, id, typing_o.type, Null, Null, annotation_withend.annotations, Null, Null, Null)}
297 !toplevel| {var4} [doc]:nd redef visibility kwvar id typing_o assign [n2]:no expr annotation_withend {-> New propdef.attr(doc.doc, redef.kwredef, visibility, kwvar, id, typing_o.type, assign, expr.expr, annotation_withend.annotations, Null, Null, Null)}
298 !toplevel| {var5} [doc]:nd redef visibility kwvar id typing_o annotation_noend? kwdo stmtso kwend? {-> New propdef.attr(doc.doc, redef.kwredef, visibility, kwvar, id, typing_o.type, Null, Null, annotation_noend.annotations, kwdo, stmtso.expr, kwend)}
299 !toplevel| {init} [doc]:nd redef visibility kwinit qmethid? signature annotation_noend? kwdo stmtso kwend_o {-> New propdef.meth(doc.doc, redef.kwredef, visibility, Null, kwinit, Null, qmethid.methid, signature, annotation_noend.annotations, Null, Null, kwdo, stmtso.expr, kwend_o.kwend)}
300 !toplevel| {type} [doc]:nd redef visibility kwtype classid typing annotation_withend {-> New propdef.type(doc.doc, redef.kwredef, visibility, kwtype, classid, typing.type, annotation_withend.annotations)}
301 !toplevel| {extern_init_implicit} [doc]:nd redef visibility kwnew qmethid? signature annotation_noend? extern_calls extern_code_block {-> New propdef.meth(doc.doc, redef.kwredef, visibility, Null, Null, kwnew, qmethid.methid, signature, annotation_noend.annotations, extern_calls, extern_code_block, Null, Null, Null)}
302 !toplevel| {annot} line_annotation_forclass {-> line_annotation_forclass.propdef}
303 !toplevel| {super} superclass {-> superclass.propdef}
305 annotation_withend~nonull {-> annotations?}
306 = {oneliner} kwis annotation_list {-> New annotations(kwis, Null, Null, [annotation_list.annotation], Null, Null)}
307 | {more} kwis n1 line_annotation+ kwend {-> New annotations(kwis, Null, Null, [line_annotation.annotation], Null, kwend) }
308 !nonull | {null} {-> Null}
310 annotation_noend {-> annotations}
311 = {oneliner} kwis annotation_list {-> New annotations(kwis, Null, Null, [annotation_list.annotation], Null, Null)}
312 | {more} kwis n1 line_annotation+ {-> New annotations(kwis, Null, Null, [line_annotation.annotation], Null, Null) }
316 = {public} {-> New visibility.public(Null)}
317 | {public2} kwpublic no {-> New visibility.public(kwpublic)}
318 | {private} kwprivate no {-> New visibility.private(kwprivate)}
319 | {protected} kwprotected no {-> New visibility.protected(kwprotected)}
320 | {intrude} kwintrude no {-> New visibility.intrude(kwintrude)}
323 methid~noid {-> methid}
324 = {plus} plus {-> New methid.plus(plus)}
325 | {minus} minus {-> New methid.minus(minus)}
326 | {star} star {-> New methid.star(star)}
327 | {starstar} starstar {-> New methid.starstar(starstar)}
328 | {slash} slash {-> New methid.slash(slash)}
329 | {percent} percent {-> New methid.percent(percent)}
330 | {pipe} pipe {-> New methid.pipe(pipe)}
331 | {caret} caret {-> New methid.caret(caret)}
332 | {amp} amp {-> New methid.amp(amp)}
333 | {tilde} tilde {-> New methid.tilde(tilde)}
334 | {eq} eq {-> New methid.eq(eq)}
335 | {ne} ne {-> New methid.ne(ne)}
336 | {le} le {-> New methid.le(le)}
337 | {ge} ge {-> New methid.ge(ge)}
338 | {lt} lt {-> New methid.lt(lt)}
339 | {gt} gt {-> New methid.gt(gt)}
340 | {ll} ll {-> New methid.ll(ll)}
341 | {gg} gg {-> New methid.gg(gg)}
342 | {bra} obra cbra {-> New methid.bra(obra, cbra)}
343 | {starship} starship {-> New methid.starship(starship)}
344 | {assign} id assign {-> New methid.assign(id, assign)}
345 | {braassign} obra cbra assign {-> New methid.braassign(obra, cbra, assign)}
346 !noid | {id} id {-> New methid.id(id)}
349 signature {-> signature}
350 = opar no params cpar typing [no2]:no {-> New signature(opar, [params.param], cpar, typing.type)}
351 | {noret} opar no params cpar [no2]:no {-> New signature(opar, [params.param], cpar, Null)}
352 | {nopar} typing no {-> New signature(Null, [], Null, typing.type)}
353 | {noparnoret} no {-> New signature(Null, [], Null, Null)}
357 = param params_tail* [n2]:no {-> [param, params_tail.param] }
360 params_tail {-> param}
361 = comma no param {-> param};
363 = {untyped} id annotations_o {-> New param(id, Null, Null, annotations_o.annotations)}
364 | id annotations? typing dotdotdot? {-> New param(id, typing.type, dotdotdot, annotations)}
367 extern_calls {-> extern_calls?}
368 = kwimport no extern_call extern_call_tail* {-> New extern_calls( kwimport, [extern_call, extern_call_tail.extern_call] )}
371 extern_call_tail {-> extern_call}
372 = comma no extern_call {-> extern_call};
373 extern_call {-> extern_call}
374 = {prop} extern_call_prop {-> extern_call_prop.extern_call}
375 | {cast} extern_call_cast {-> extern_call_cast.extern_call}
376 | {super} kwsuper {-> New extern_call.super( kwsuper )}
378 extern_call_prop {-> extern_call}
379 = {local} qmethid {-> New extern_call.local_prop( qmethid.methid )}
380 | {full} type dot qmethid {-> New extern_call.full_prop( type, dot, qmethid.methid )}
381 | {init} type {-> New extern_call.init_prop( type )}
383 extern_call_cast {-> extern_call}
384 = {as_cast} [from_type]:type dot kwas [n2]:no opar [n3]:no [to_type]:type [n4]:no cpar {-> New extern_call.cast_as(from_type, dot, kwas, to_type)}
385 | {as_cast2}[from_type]:type dot kwas [n2]:no [to_type]:type {-> New extern_call.cast_as(from_type, dot, kwas, to_type)}
386 | {as_nullable} type dot kwas [n2]:no opar [n3]:no kwnullable [n4]:no cpar {-> New extern_call.as_nullable( type, kwas, kwnullable)}
387 | {as_nullable2}type dot kwas [n2]:no kwnullable {-> New extern_call.as_nullable( type, kwas, kwnullable)}
388 | {as_not_nullable} type dot kwas [n2]:no opar [n3]:no kwnot [n4]:no kwnullable [n5]:no cpar {-> New extern_call.as_not_nullable( type, kwas, kwnot, kwnullable)}
389 | {as_not_nullable2}type dot kwas [n2]:no kwnot [n3]:no kwnullable {-> New extern_call.as_not_nullable( type, kwas, kwnot, kwnullable)}
392 string_o {->string?} = string? {-> string};
394 in_language = kwin no string [n1]:no {-> New in_language(kwin, string)};
395 extern_code_block = in_language? extern_code_segment;
396 extern_code_block_o {-> extern_code_block?}
397 = extern_code_block {-> extern_code_block}
400 extern_code_body {-> extern_code_block} = no extern_code_block {-> extern_code_block};
402 /* TYPES *********************************************************************/
403 type~nobra~nopar {-> type}
404 = {simple} kwnullable? classid annotations_o~nopar {-> New type(kwnullable, classid, Null, [], Null, annotations_o~nopar.annotations)}
405 !nobra | {generic} kwnullable? classid obra no types [n2]:no cbra annotations_o~nopar {-> New type(kwnullable, classid, obra, [types.type], cbra, annotations_o~nopar.annotations)}
408 = type types_tail* {-> [type, types_tail.type]};
410 = comma no type {-> type};
412 = column no type {-> type};
414 = column no type {-> type}
418 /* STATMENTS *****************************************************************/
419 stmtso~withelse~withend {-> expr?}
420 = {block} n stmtsnend {-> stmtsnend.expr}
421 | {emptyblock} n kwend {-> New expr.block([], kwend)}
422 | {emptyoneline} kwend {-> New expr.block([], kwend)}
423 !withend| {oneline} stmt~withelse {-> stmt~withelse.expr}
426 = stmt stmts_tail* {-> New expr.block([stmt.expr, stmts_tail.expr], Null)};
428 = stmt stmts_tail* n {-> New expr.block([stmt.expr, stmts_tail.expr], Null)};
430 = stmt stmts_tail* n kwend {-> New expr.block([stmt.expr, stmts_tail.expr], kwend)};
432 = n stmt {-> stmt.expr};
433 stmt~withelse~noexpr~nopar {-> expr}
434 = {vardecl} vardecl {-> vardecl.expr}
435 | {assign} assignment~nopar {-> assignment~nopar.expr}
436 | {return} kwreturn expr? {-> New expr.return(kwreturn, expr)}
437 | {break} kwbreak label? {-> New expr.break(kwbreak, label)}
438 | {abort} kwabort {-> New expr.abort(kwabort)}
439 | {continue} kwcontinue label? {-> New expr.continue(kwcontinue, label)}
440 | {do} do~withelse {-> do~withelse.expr}
441 !noexpr | {if} if~withelse {-> if~withelse.expr}
442 | {while} while~withelse {-> while~withelse.expr}
443 | {loop} loop~withelse {-> loop~withelse.expr}
444 | {for} for~withelse {-> for~withelse.expr}
445 | {with} with~withelse {-> with~withelse.expr}
446 | {assert} assert~withelse {-> assert~withelse.expr}
447 !noexpr | {call} recv qid args_nopar {-> New expr.call(recv.expr, qid.id, args_nopar.exprs)}
448 !noexpr | {super} qualified_o kwsuper args_nopar {-> New expr.super(qualified_o.qualified, kwsuper, args_nopar.exprs)}
449 !noexpr | {init} recv qualified? kwinit args_nopar {-> New expr.init(recv.expr, kwinit, args_nopar.exprs)}
450 | {debug_type_is} kwdebug kwtype type column expr {-> New expr.debug_type(kwdebug, kwtype, expr.expr, type) }
456 = kwvar id annotations? typing_o {-> New expr.vardecl(kwvar, id, typing_o.type, Null, Null, annotations)}
457 | {assign} kwvar id annotations? typing_o assign no expr {-> New expr.vardecl(kwvar, id, typing_o.type, assign, expr.expr, annotations)}
460 assignment~nopar {-> expr}
461 = {attr} recv~nopar qualified_o attrid assign expr {-> New expr.attr_assign(recv~nopar.expr, attrid, assign, expr)}
462 | {call} recv~nopar qid args assign expr {-> New expr.call_assign(recv~nopar.expr, qid.id, args.exprs, assign, expr)}
463 | {bra} expr_atom~nopar braargs assign expr {-> New expr.bra_assign(expr_atom~nopar.expr, braargs.exprs, assign, expr)}
464 | {attr_re} recv~nopar qualified_o attrid assign_op expr {-> New expr.attr_reassign(recv~nopar.expr, attrid, assign_op, expr)}
465 | {call_re} recv~nopar qid args assign_op expr {-> New expr.call_reassign(recv~nopar.expr, qid.id, args.exprs, assign_op, expr)}
466 | {bra_re} expr_atom~nopar braargs assign_op expr {-> New expr.bra_reassign(expr_atom~nopar.expr, braargs.exprs, assign_op, expr)}
473 | {percent} percenteq
474 | {starstar} starstareq
482 do~withelse {-> expr}
483 = kwdo stmtso_withend label {-> New expr.do(kwdo, stmtso_withend.expr, label)}
484 | {nolabel} kwdo stmtso~withelse {-> New expr.do(kwdo, stmtso~withelse.expr, Null)}
487 if~withelse {-> expr}
488 = {onelineelse} kwif no expr [n2]:no kwthen stmt_withelse kwelse stmtso~withelse {-> New expr.if(kwif, expr, kwthen, stmt_withelse.expr, kwelse, stmtso~withelse.expr)}
489 !withelse | {oneline} kwif no expr [n2]:no kwthen stmt {-> New expr.if(kwif, expr, kwthen, stmt.expr, Null, Null)}
490 !withelse | {block} kwif no expr [n2]:no kwthen [n3]:n stmtsn kwelse stmtso {-> New expr.if(kwif, expr, kwthen, stmtsn.expr, kwelse, stmtso.expr)}
491 !withelse | {emptyblock} kwif no expr [n2]:no kwthen [n3]:n? kwelse stmtso {-> New expr.if(kwif, expr, kwthen, Null, kwelse, stmtso.expr)}
492 !withelse | {blocknoelse} kwif no expr [n2]:no kwthen [n3]:n stmtsn endblock {-> New expr.if(kwif, expr, kwthen, stmtsn.expr, Null, endblock.expr)}
493 !withelse | {emptyblocknoelse} kwif no expr [n2]:no kwthen [n3]:n? endblock {-> New expr.if(kwif, expr, kwthen, Null, Null, endblock.expr)}
496 = {empty} kwend {-> New expr.block([], kwend)}
499 loop~withelse {-> expr}
500 = kwloop stmtso_withend label {-> New expr.loop(kwloop, stmtso_withend.expr, label)}
501 | {nolabel} kwloop stmtso~withelse {-> New expr.loop(kwloop, stmtso~withelse.expr, Null)}
504 while~withelse {-> expr}
505 = kwwhile no expr [n2]:no kwdo stmtso_withend label {-> New expr.while(kwwhile, expr, kwdo, stmtso_withend.expr, label)}
506 | {nolabel} kwwhile no expr [n2]:no kwdo stmtso~withelse {-> New expr.while(kwwhile, expr, kwdo, stmtso~withelse.expr, Null)}
509 for~withelse {-> expr}
510 = kwfor no [ids]:idlist [n2]:no kwin [n3]:no expr [n4]:no kwdo stmtso_withend label {-> New expr.for(kwfor, [ids.id], kwin, expr, kwdo, stmtso_withend.expr, label)}
511 | {nolabel} kwfor no [ids]:idlist [n2]:no kwin [n3]:no expr [n4]:no kwdo stmtso~withelse {-> New expr.for(kwfor, [ids.id], kwin, expr, kwdo, stmtso~withelse.expr, Null)}
514 with~withelse {-> expr}
515 = kwwith no withexpr [n4]:no kwdo stmtso_withend label {-> New expr.with(kwwith, withexpr.expr, kwdo, stmtso_withend.expr, label)}
516 | {nolabel} kwwith no withexpr [n4]:no kwdo stmtso~withelse {-> New expr.with(kwwith, withexpr.expr, kwdo, stmtso~withelse.expr, Null)}
520 = {assign} id annotations? typing_o assign no expr {-> New expr.vardecl(Null, id, typing_o.type, assign, expr.expr, annotations)}
524 assert~withelse {-> expr}
525 = {else} kwassert assertid? expr kwelse stmtso~withelse {-> New expr.assert(kwassert, assertid.id, expr, kwelse, stmtso~withelse.expr)}
526 !withelse| {noelse} kwassert assertid? expr {-> New expr.assert(kwassert, assertid.id, expr, Null, Null)}
531 /* EXPRESSIONS ***************************************************************/
532 expr~nopar~nobra {-> expr}
533 = expr_and~nopar~nobra {-> expr_and~nopar~nobra.expr}
534 | {ifexpr} kwif [n1]:no expr [n2]:no kwthen [n3]:no [then]:expr [n4]:no kwelse [n5]:no [else]:expr~nopar~nobra {-> New expr.ifexpr(kwif, expr, kwthen, then, kwelse, else.expr)}
537 expr_and~nopar~nobra {-> expr}
538 = expr_not~nopar~nobra {-> expr_not~nopar~nobra.expr}
539 | {:or} expr_and~nopar~nobra kwor :no expr_not~nopar~nobra
540 | {:and} expr_and~nopar~nobra kwand :no expr_not~nopar~nobra
541 | {:or_else} expr_and~nopar~nobra kwor kwelse :no expr_not~nopar~nobra
542 | {:implies} expr_and~nopar~nobra kwimplies :no expr_not~nopar~nobra
545 expr_not~nopar~nobra {-> expr}
546 = expr_eq~nopar~nobra {-> expr_eq~nopar~nobra.expr}
547 | {not} kwnot no expr_not~nopar~nobra {-> New expr.not(kwnot, expr_not~nopar~nobra.expr)}
550 expr_eq~nopar~nobra {-> expr}
551 = expr_bitor~nopar~nobra {-> expr_bitor~nopar~nobra.expr}
552 | {:eq} expr_bitor~nopar~nobra eq :no [expr2]:expr_bitor~nopar~nobra
553 | {:ne} expr_bitor~nopar~nobra ne :no [expr2]:expr_bitor~nopar~nobra
554 | {:lt} expr_bitor~nopar~nobra lt :no [expr2]:expr_bitor~nopar~nobra
555 | {:le} expr_bitor~nopar~nobra le :no [expr2]:expr_bitor~nopar~nobra
556 | {:gt} expr_bitor~nopar~nobra gt :no [expr2]:expr_bitor~nopar~nobra
557 | {:ge} expr_bitor~nopar~nobra ge :no [expr2]:expr_bitor~nopar~nobra
558 | {:starship} expr_bitor~nopar~nobra starship :no [expr2]:expr_bitor~nopar~nobra
559 | {:isa} expr_bitor~nopar~nobra kwisa :no type~nobra
562 expr_bitor~nopar~nobra {-> expr}
563 = [expr]:expr_bitxor~nopar~nobra {-> expr.expr}
564 | {:pipe} expr_bitor~nopar~nobra pipe :no [expr2]:expr_bitxor~nopar~nobra
567 expr_bitxor~nopar~nobra {-> expr}
568 = [expr]:expr_bitand~nopar~nobra {-> expr.expr}
569 | {:caret} expr_bitxor~nopar~nobra caret :no [expr2]:expr_bitand~nopar~nobra
572 expr_bitand~nopar~nobra {-> expr}
573 = [expr]:expr_shift~nopar~nobra {-> expr.expr}
574 | {:amp} expr_bitand~nopar~nobra amp :no [expr2]:expr_shift~nopar~nobra
577 expr_shift~nopar~nobra {-> expr}
578 = [expr]:expr_add~nopar~nobra {-> expr.expr}
579 | {:ll} expr_shift~nopar~nobra ll :no [expr2]:expr_add~nopar~nobra
580 | {:gg} expr_shift~nopar~nobra gg :no [expr2]:expr_add~nopar~nobra
583 expr_add~nopar~nobra {-> expr}
584 = expr_mul~nopar~nobra {-> expr_mul~nopar~nobra.expr}
585 | {:plus} expr_add~nopar~nobra plus :no [expr2]:expr_mul~nopar~nobra
586 | {:minus} expr_add~nopar~nobra minus :no [expr2]:expr_mul~nopar~nobra
589 expr_mul~nopar~nobra {-> expr}
590 = expr_pow~nopar~nobra {-> expr_pow~nopar~nobra.expr}
591 | {:star} expr_mul~nopar~nobra star :no [expr2]:expr_pow~nopar~nobra
592 | {:slash} expr_mul~nopar~nobra slash :no [expr2]:expr_pow~nopar~nobra
593 | {:percent} expr_mul~nopar~nobra percent :no [expr2]:expr_pow~nopar~nobra
596 expr_pow~nopar~nobra {-> expr}
597 = expr_minus~nopar~nobra {-> expr_minus~nopar~nobra.expr}
598 | {:starstar} expr_minus~nopar~nobra starstar :no [expr2]:expr_pow~nopar~nobra
601 expr_minus~nopar~nobra {-> expr}
602 = expr_new~nopar~nobra {-> expr_new~nopar~nobra.expr}
603 | {:uminus} minus expr_minus~nobra
604 | {:uplus} plus expr_minus~nobra
605 | {:utilde} tilde expr_minus~nobra
606 | {:once} kwonce :no expr_minus~nobra
609 expr_new~nopar~nobra {-> expr}
610 = expr_atom~nopar~nobra {-> expr_atom~nopar~nobra.expr}
611 | {new} kwnew no type~nobra_nopar args {-> New expr.new(kwnew, type~nobra_nopar.type, Null, args.exprs)}
612 | {isset_attr} kwisset recv~nopar~nobra qualified_o attrid {-> New expr.isset_attr(kwisset, recv~nopar~nobra.expr, attrid)}
615 expr_atom~nopar~nobra {-> expr}
616 = expr_single~nopar~nobra {-> expr_single~nopar~nobra.expr}
617 | {attr} recv~nopar~nobra qualified_o attrid {-> New expr.attr(recv~nopar~nobra.expr, attrid)}
618 | {call} recv~nopar~nobra qid args {-> New expr.call(recv~nopar~nobra.expr, qid.id, args.exprs)}
619 | {super} qualified_o kwsuper args {-> New expr.super(qualified_o.qualified, kwsuper, args.exprs)}
620 | {init} recv~nopar~nobra kwinit args {-> New expr.init(recv~nopar~nobra.expr, kwinit, args.exprs)}
621 !nobra | {bra} expr_atom~nopar braargs {-> New expr.bra(expr_atom~nopar.expr, braargs.exprs)}
622 | {new} kwnew no type~nobra_nopar dot [n2]:no qid args {-> New expr.new(kwnew, type~nobra_nopar.type, qid.id, args.exprs)}
623 | {as_cast} expr_atom~nopar~nobra dot no kwas [n2]:no opar [n3]:no type [n4]:no cpar {-> New expr.as_cast(expr_atom~nopar~nobra.expr, kwas, opar, type, cpar)}
624 | {as_notnull} expr_atom~nopar~nobra dot no kwas [n2]:no opar [n3]:no kwnot [n4]:no kwnull [n5]:no cpar {-> New expr.as_notnull(expr_atom~nopar~nobra.expr, kwas, opar, kwnot, kwnull, cpar)}
625 | {as_notnull2}expr_atom~nopar~nobra dot no kwas [n2]:no kwnot [n4]:no kwnull {-> New expr.as_notnull(expr_atom~nopar~nobra.expr, kwas, Null, kwnot, kwnull, Null)}
628 arg~nopar~nobra {-> expr}
629 = [expr]:expr~nopar~nobra {-> expr.expr}
630 | {vararg} [expr]:expr~nopar~nobra dotdotdot {-> New expr.vararg(expr.expr, dotdotdot)}
631 | {namedarg} id assign [expr]:expr~nopar~nobra {-> New expr.namedarg(id, assign, expr.expr) }
634 expr_single~nopar~nobra {-> expr}
635 = {self} kwself annotations_o {-> New expr.self(kwself, annotations_o.annotations)}
636 | {true} kwtrue annotations_o {-> New expr.true(kwtrue, annotations_o.annotations)}
637 | {false} kwfalse annotations_o {-> New expr.false(kwfalse, annotations_o.annotations)}
638 | {null} kwnull annotations_o {-> New expr.null(kwnull, annotations_o.annotations)}
639 | {int} number annotations_o {-> New expr.dec_int(number, annotations_o.annotations)}
640 | {hex_int} hex_number annotations_o {-> New expr.hex_int(hex_number, annotations_o.annotations)}
641 | {bin_int} bin_number annotations_o {-> New expr.bin_int(bin_number, annotations_o.annotations)}
642 | {oct_int} oct_number annotations_o {-> New expr.oct_int(oct_number, annotations_o.annotations)}
643 | {float} float annotations_o {-> New expr.float(float, annotations_o.annotations)}
644 | {char} char annotations_o {-> New expr.char(char, annotations_o.annotations)}
645 | {string} string annotations_o {-> New expr.string(string, annotations_o.annotations)}
646 | {superstring} superstring {-> superstring.expr}
647 !nopar | {par} expr_par {-> expr_par.expr}
648 // !nopar to unambiguise 'foo[5].bar' between '(foo[5]).bar' and 'foo([5].bar),
649 !nobra!nopar | {range} obra no expr [n2]:no dotdot [n3]:no [expr2]:expr_nobra [n4]:no cbra annotations_o {-> New expr.crange(obra, expr, dotdot, expr2.expr, cbra, annotations_o.annotations)}
650 !nobra!nopar | {orange} obra no expr [n2]:no dotdot [n3]:no [expr2]:expr_nobra [n4]:no [cbra]:obra annotations_o {-> New expr.orange(obra, expr, dotdot, expr2.expr, cbra, annotations_o.annotations)}
651 !nobra!nopar | {array} obra no array_items typing_o cbra annotations_o {-> New expr.array(obra, [array_items.expr], typing_o.type, cbra, annotations_o.annotations)}
655 = {par} opar no any_expr [n2]:no cpar annotations_o {-> New expr.par(opar, any_expr.expr, cpar, annotations_o.annotations)}
656 | {tuple} opar no many_expr [n2]:no cpar annotations_o {-> New expr.par(opar, many_expr.expr, cpar, annotations_o.annotations)}
660 = any_expr many_expr_tail+ {-> New expr.many([any_expr.expr, many_expr_tail.expr])}
663 many_expr_tail {->expr}
664 = comma no any_expr {-> any_expr.expr}
667 array_items {-> expr*}
668 = array_item array_items_tail* {-> [array_item.expr, array_items_tail.expr]}
670 array_items_tail {-> expr}
671 = comma no array_item {-> array_item.expr}
675 | {for} kwfor no [ids]:idlist [n2]:no kwin [n3]:no expr [n4]:no kwdo [block]:array_item {-> New expr.for(kwfor, [ids.id], kwin, expr, kwdo, block.expr, Null)}
676 | {if} kwif [n1]:no expr [n2]:no kwthen [n3]:no [then]:array_item {-> New expr.if(kwif, expr, kwthen, then.expr, Null, Null)}
679 superstring {-> expr}
680 = superstring_start superstring_middle* superstring_end annotations_o {-> New expr.superstring([superstring_start.expr, superstring_middle.expr, superstring_end.expr], annotations_o.annotations)};
681 superstring_start {-> expr*}
682 = start_string_p no expr [n2]:no {-> [start_string_p.expr, expr]}
683 | {noexpr} start_string_p no {-> [start_string_p.expr]}
685 start_string_p {-> expr}
686 = start_string {-> New expr.start_string(start_string)};
687 superstring_middle {-> expr*}
688 = mid_string_p no expr [n2]:no {-> [mid_string_p.expr, expr]}
689 | {noexpr} mid_string_p no {-> [mid_string_p.expr]}
691 mid_string_p {-> expr}
692 = mid_string {-> New expr.mid_string(mid_string)};
693 superstring_end {-> expr}
694 = end_string {-> New expr.end_string(end_string)};
696 /* ANNOTATIONS *******************************************************************/
698 annotations~nopar {-> annotations}
699 = {one} at one_annotation~nopar {-> New annotations(Null, at, Null, [one_annotation~nopar.annotation], Null, Null)}
700 | {many} at opar no annotation_list [n2]:no cpar {-> New annotations(Null, at, opar, [annotation_list.annotation], cpar, Null)}
702 annotations_o~nopar {-> annotations?}
703 = annotations~nopar {-> annotations~nopar.annotations}
707 one_annotation~nopar {-> annotation}
708 = {alone} redef visibility atid annotations_o~nopar {-> New annotation(Null, redef.kwredef, visibility, atid, Null, [], Null, annotations_o~nopar.annotations)}
709 // !nopar to unambiguise 'new T@foo(bar)' between 'new T@(foo(bar))' and 'new (T@foo)(bar)'
710 !nopar | {args} redef visibility atid opar no at_args [n2]:no cpar annotations_o~nopar {-> New annotation(Null, redef.kwredef, visibility, atid, opar, [at_args.expr], cpar, annotations_o~nopar.annotations)}
713 annotation_list {-> annotation*}
714 = {many} one_annotation_list annotations_tail* {-> [one_annotation_list.annotation, annotations_tail.annotation] }
717 one_annotation_list~nopar {-> annotation}
718 = {alone} redef visibility atid annotations_o~nopar {-> New annotation(Null, redef.kwredef, visibility, atid, Null, [], Null, annotations_o~nopar.annotations)}
719 // !nopar to unambiguise 'new T@foo(bar)' between 'new T@(foo(bar))' and 'new (T@foo)(bar)'
720 !nopar | {args} redef visibility atid opar no at_args [n2]:no cpar annotations_o~nopar {-> New annotation(Null, redef.kwredef, visibility, atid, opar, [at_args.expr], cpar, annotations_o~nopar.annotations)}
721 !nopar | {nopar} redef visibility atid at_arg_single {-> New annotation(Null, redef.kwredef, visibility, atid, Null, [at_arg_single.expr], Null, Null)}
723 at_arg_single {-> expr}
724 // FIXME: why expr_single but not expr_atom is not clear :(
725 = {expr} [expr]:expr_single_nopar {-> expr.expr}
728 annotations_tail {-> annotation}
729 = comma no one_annotation_list {-> one_annotation_list.annotation}
732 line_annotation {-> annotation}
733 = [doc]:nd redef visibility atid annotations? n1 {-> New annotation(doc.doc, redef.kwredef, visibility, atid.atid, Null, [], Null, annotations)}
734 | {args} [doc]:nd redef visibility atid opar no at_args cpar annotations? n1 {-> New annotation(doc.doc, redef.kwredef, visibility, atid.atid, opar, [at_args.expr], cpar, annotations)}
735 | {nopar} [doc]:nd redef visibility atid at_args_nopar n1 {-> New annotation(doc.doc, redef.kwredef, visibility, atid.atid, Null, [at_args_nopar.expr], Null, Null)}
737 line_annotation_forclass {-> propdef}
738 = [doc]:nd atid_forclass annotations? {-> New propdef.annot(doc.doc, Null, Null, atid_forclass.atid, Null, [], Null, annotations)}
739 | {args} [doc]:nd atid_forclass opar no at_args cpar annotations? {-> New propdef.annot(doc.doc, Null, Null, atid_forclass.atid, opar, [at_args.expr], cpar, annotations)}
740 | {nopar} [doc]:nd atid_forclass at_args_nopar {-> New propdef.annot(doc.doc, Null, Null, atid_forclass.atid, Null, [at_args_nopar.expr], Null, Null)}
743 at_args~nopar {-> expr* }
744 = {many} any_expr~nopar at_args_tail* {-> [any_expr~nopar.expr, at_args_tail.expr]}
747 at_args_tail {-> expr}
748 = comma no any_expr {-> any_expr.expr}
751 any_expr~nopar {-> expr}
752 = {type} type {-> New expr.type(type)}
753 | {expr} expr~nopar {-> expr~nopar.expr}
754 | {stmt} stmt_noexpr~nopar {-> stmt_noexpr~nopar.expr}
755 | {methid} recv~nopar qmethid_noid {-> New expr.methid(recv~nopar.expr, qmethid_noid.methid)}
756 !nopar | {at} annotations {-> New expr.at(annotations.annotations)}
759 atid~forclass {-> atid}
760 = {id} id {-> New atid.id(id)}
761 !forclass | {kwextern} kwextern {-> New atid.kwextern(kwextern)}
762 // | {kwimport} kwimport {-> New atid.kwimport(kwimport)}
763 | {kwabstract} kwabstract {-> New atid.kwabstract(kwabstract)}
766 /* MISC **********************************************************************/
768 recv~nopar~nobra {-> expr}
769 = expr_atom~nopar~nobra dot no {-> expr_atom~nopar~nobra.expr}
770 | {implicit} {-> New expr.implicit_self()}
774 = args_n {-> args_n.exprs}
775 | {empty} {-> New exprs.list([])}
778 = opar no expr_list cpar {-> New exprs.par(opar, [expr_list.expr], cpar) }
779 | {emptypar} opar no cpar {-> New exprs.par(opar, [], cpar) }
781 args_nopar {-> exprs}
782 = opar no expr_list cpar {-> New exprs.par(opar, [expr_list.expr], cpar) }
783 | {onearg} expr_nopar {-> New exprs.list([expr_nopar.expr])}
784 | {emptypar} opar no cpar {-> New exprs.par(opar, [], cpar) }
785 | {empty} {-> New exprs.list([])}
788 = obra no expr_list cbra {-> New exprs.bra(obra, [expr_list.expr], cbra)};
790 = arg [n2]:no expr_tail* {-> [arg.expr, expr_tail.expr]};
792 = comma no arg [n2]:no {-> arg.expr};
794 = opar no idlist_nopar [n2]:no cpar {-> [idlist_nopar.id]}
795 | {nopar} idlist_nopar {-> [idlist_nopar.id]}
797 idlist_nopar {-> id*}
798 = {single} id {-> [id]}
799 | {more} idlist_nopar comma [n2]:no id {-> [idlist_nopar.id, id]}
802 module_name {-> module_name}
803 = {mod} modquad* id {-> New module_name(Null, [modquad.id], id)}
804 | {root} quad no modquad* id {-> New module_name(quad, [modquad.id], id)}
808 = {cla} modquad* classquad {-> New qualified([modquad.id], classquad.classid)}
809 | {mod} modquad+ {-> New qualified([modquad.id], Null)}
811 qualified_o {-> qualified?}
812 = qualified {-> qualified}
816 = qualified? id {-> id}
818 qclassid {-> classid}
819 = qualified? classid {-> classid}
821 qmethid~noid {-> methid}
822 = qualified? methid~noid {-> methid~noid.methid}
825 = id quad no {-> id};
826 classquad {-> classid}
827 = classid quad no {-> classid};
833 /* A single hard break */
834 n1 = {a} comment | {b} eol | {c} semi;
836 /* A mandatory hard break, returns the last comment */
838 = {a} n2* comment+ {-> New doc([comment])}
840 !nosemi | {c} n2* comment* semi n? {-> n.doc }
843 /* An optional hard break, returns the last comment.
844 * Used mainly to introduce optional documentation */
850 /* An optional soft break.
851 * Used when a unambiguous line break or comment could be inserted/ */
861 /*****************************************************************************/
863 /*****************************************************************************/
865 module = moduledecl? [imports]:import* [extern_code_blocks]:extern_code_block* [classdefs]:classdef*;
868 = doc? kwredef? visibility kwmodule [name]:module_name annotations?;
870 import = {std} visibility kwimport [name]:module_name annotations?
871 | {no} visibility kwimport kwend
876 | {private} kwprivate
877 | {protected} kwprotected
878 | {intrude} kwintrude
881 classdef= {std} doc? kwredef? visibility classkind [id]:classid? obra? [formaldefs]:formaldef* cbra? extern_code_block? [propdefs]:propdef* kwend
882 | {top} [propdefs]:propdef*
883 | {main} [propdefs]:propdef*
887 | {abstract} kwabstract kwclass
888 | {interface} kwinterface
890 | {extern} kwextern kwclass?
892 formaldef = [id]:classid type? annotations?;
895 propdef = {attr} doc? kwredef? visibility kwvar [id2]:id type? assign? expr? annotations? kwdo? [block]:expr? kwend?
896 | {main_meth} kwredef? [block]:expr?
897 | {type} doc? kwredef? visibility kwtype [id]:classid type annotations?
898 | {meth} doc? kwredef? visibility kwmeth? kwinit? kwnew? methid? signature annotations? extern_calls? extern_code_block? kwdo? [block]:expr? kwend?
899 | {super} doc? kwredef? visibility kwsuper type annotations?
900 | {annot} doc? kwredef? visibility? atid opar? [args]:expr* cpar? annotations?
908 | {starstar} [op]:starstar
910 | {percent} [op]:percent
919 | {starship} [op]:starship
926 | {braassign} obra cbra assign
929 signature = opar? [params]:param* cpar? type?;
931 param = id type? dotdotdot? annotations?
934 type = kwnullable? [id]:classid obra? [types]:type* cbra? annotations?;
938 expr = {block} expr* kwend?
939 | {vardecl} kwvar? id type? assign? expr? annotations?
940 | {return} kwreturn? expr?
941 | {break} kwbreak label?
943 | {continue} kwcontinue? label?
944 | {do} kwdo [block]:expr? label?
945 | {if} kwif expr kwthen [then]:expr? kwelse? [else]:expr?
946 | {ifexpr} kwif expr kwthen [then]:expr kwelse [else]:expr
947 | {while} kwwhile expr kwdo [block]:expr? label?
948 | {loop} kwloop [block]:expr? label?
949 | {for} kwfor [ids]:id* kwin expr kwdo [block]:expr? label?
950 | {with} kwwith expr kwdo [block]:expr? label?
951 | {assert} kwassert id? expr kwelse? [else]:expr?
954 | {binop} expr [expr2]:expr
955 | {or} expr [op]:kwor [expr2]:expr
956 | {and} expr [op]:kwand [expr2]:expr
957 | {or_else} expr [op]:kwor kwelse [expr2]:expr
958 | {implies} expr [op]:kwimplies [expr2]:expr
960 | {eq} expr [op]:eq [expr2]:expr
961 | {ne} expr [op]:ne [expr2]:expr
962 | {lt} expr [op]:lt [expr2]:expr
963 | {le} expr [op]:le [expr2]:expr
964 | {ll} expr [op]:ll [expr2]:expr
965 | {gt} expr [op]:gt [expr2]:expr
966 | {ge} expr [op]:ge [expr2]:expr
967 | {gg} expr [op]:gg [expr2]:expr
968 | {isa} expr kwisa type
969 | {plus} expr [op]:plus [expr2]:expr
970 | {minus} expr [op]:minus [expr2]:expr
971 | {starship} expr [op]:starship [expr2]:expr
972 | {star} expr [op]:star [expr2]:expr
973 | {starstar} expr [op]:starstar [expr2]:expr
974 | {slash} expr [op]:slash [expr2]:expr
975 | {percent} expr [op]:percent [expr2]:expr
976 | {pipe} expr [op]:pipe [expr2]:expr
977 | {caret} expr [op]:caret [expr2]:expr
978 | {amp} expr [op]:amp [expr2]:expr
979 | {uminus} [op]:minus expr
980 | {uplus} [op]:plus expr
981 | {utilde} [op]:tilde expr
982 | {new} kwnew type id? [args]:exprs
983 | {attr} expr [id]:attrid
984 | {attr_assign} expr [id]:attrid assign [value]:expr
985 | {attr_reassign} expr [id]:attrid assign_op [value]:expr
986 | {call} expr id [args]:exprs
987 | {call_assign} expr id [args]:exprs assign [value]:expr
988 | {call_reassign} expr id [args]:exprs assign_op [value]:expr
989 | {super} qualified? kwsuper [args]:exprs
990 | {init} expr kwinit [args]:exprs
991 | {bra} expr [args]:exprs
992 | {bra_assign} expr [args]:exprs assign [value]:expr
993 | {bra_reassign} expr [args]:exprs assign_op [value]:expr
995 | {var_assign} id assign [value]:expr
996 | {var_reassign} id assign_op [value]:expr
997 | {range} expr [expr2]:expr annotations?
998 | {crange} obra expr dotdot [expr2]:expr cbra annotations?
999 | {orange} obra expr dotdot [expr2]:expr [cbra]:obra annotations?
1000 | {array} obra [exprs]:expr* type? cbra annotations?
1001 | {self} kwself annotations?
1003 | {true} kwtrue annotations?
1004 | {false} kwfalse annotations?
1005 | {null} kwnull annotations?
1006 | {dec_int} number annotations?
1007 | {hex_int} hex_number annotations?
1008 | {bin_int} bin_number annotations?
1009 | {oct_int} oct_number annotations?
1010 | {float} float annotations?
1011 | {char} char annotations?
1012 | {string} string annotations?
1013 | {start_string} [string]:start_string
1014 | {mid_string} [string]:mid_string
1015 | {end_string} [string]:end_string
1016 | {superstring} [exprs]:expr* annotations?
1017 | {par} opar expr cpar annotations?
1018 | {as_cast} expr kwas opar? type cpar?
1019 | {as_notnull} expr kwas opar? kwnot kwnull cpar?
1020 | {isset_attr} kwisset expr [id]:attrid
1021 | {debug_type} kwdebug kwtype expr type
1022 | {vararg} expr dotdotdot
1023 | {namedarg} id assign expr
1025 | {methid} expr [id]:methid
1027 | {many} [exprs]:expr*
1030 = {list} [exprs]:expr*
1031 | {par} opar [exprs]:expr* cpar
1032 | {bra} obra [exprs]:expr* cbra
1035 = {plus} [op]:pluseq
1036 | {minus}[op]:minuseq
1037 | {star} [op]:stareq
1038 | {slash} [op]:slasheq
1039 | {percent} [op]:percenteq
1040 | {starstar} [op]:starstareq
1041 | {pipe} [op]:pipeeq
1042 | {caret} [op]:careteq
1048 module_name = quad? [path]:id* id;
1049 extern_calls = kwimport [extern_calls]:extern_call*
1053 | {local_prop} methid
1054 | {full_prop} type dot? methid
1056 | {cast_as} [from_type]:type dot? kwas [to_type]:type
1057 | {as_nullable} type kwas kwnullable
1058 | {as_not_nullable} type kwas kwnot kwnullable
1060 in_language = kwin string;
1061 extern_code_block = in_language? extern_code_segment;
1063 qualified = id* classid? ;
1067 annotations = kwis? at? opar? [items]:annotation* cpar? kwend?;
1069 annotation = doc? kwredef? visibility? atid opar? [args]:expr* cpar? annotations?;
1071 atid = {id} id | {kwextern} [id]:kwextern | {kwabstract} [id]:kwabstract | {kwimport} [id]:kwimport;
1073 /*****************************************************************************/