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 letter = lowercase | uppercase | digit | '_';
36 any = [all - [cr + lf]];
37 eol_helper = cr lf | cr | lf; // This takes care of different platforms
39 // characers inside strings and super-strings (atomaton powaa)
41 = [any - [['"' + '{'] + '\']]
51 sstr_body = sstr_char*;
53 long_str_char = str_char | cr | lf;
55 // because no substraction in sablecc3, complex long strings are difficult to express
58 ls12 = ls1? (ls2 ls1)* ls2?;
64 long_str_body = long_str_part*;
65 lsend1 = ls2? (ls1 ls2)* '"""' '"'*;
66 lsend2 = ls1? (ls2 ls1)* '{{{' '{'*;
68 long_sstr_char = sstr_char | cr | lf;
72 | ''' ''' long_sstr_char
75 long_sstr_body = long_sstr_part*;
83 extern_code_body = extern_code_char*;
85 /*****************************************************************************/
87 /*****************************************************************************/
91 /*****************************************************************************/
93 /*****************************************************************************/
98 comment = '#' any* eol_helper?;
100 kwpackage = 'package';
104 kwabstract = 'abstract';
105 kwinterface = 'interface';
106 kwenum = 'universal'|'enum';
117 kwprotected = 'protected';
118 kwprivate = 'private';
119 kwintrude = 'intrude';
130 kwimplies = 'implies';
132 kwcontinue = 'continue';
145 kwnullable = 'nullable';
148 kwdebug = '__debug__';
181 classid = uppercase letter*;
182 id = lowercase letter*;
183 attrid = '_' lowercase letter*;
186 hex_number = ('0x' | '0X') hexdigit+;
187 float = digit* '.' digit+;
188 string = '"' str_body '"' | '"' '"' '"' long_str_body lsend1 | ''' ''' ''' long_sstr_body ''' ''' ''';
189 start_string = '"' str_body '{' | '"' '"' '"' long_str_body lsend2;
190 mid_string = '}' str_body '{' | '}' '}' '}' long_str_body lsend2;
191 end_string = '}' str_body '"' | '}' '}' '}' long_str_body lsend1;
192 char = (''' [[any - '''] - '\'] ''') | (''' '\' any ''');
193 bad_string = ('"'|'}') str_body | '"' '"' '"' long_str_body | ''' ''' ''' long_sstr_body;
194 bad_char = ''' '\'? any;
196 extern_code_segment = '`' '{' extern_code_body '`' '}';
198 /*****************************************************************************/
200 /*****************************************************************************/
204 /*****************************************************************************/
206 /*****************************************************************************/
208 /* MODULES *******************************************************************/
210 = 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])};
213 = [doc]:no redef visibility kwmodule no module_name annotation_withend [n2]:n1 {-> New moduledecl(doc.doc, redef.kwredef, visibility, kwmodule, module_name, annotation_withend.annotations)};
216 = {std} [doc]:no redef visibility kwimport no module_name annotation_withend [n2]:n1 {-> New import.std(visibility, kwimport, module_name, annotation_withend.annotations)}
217 | {no} [doc]:no redef visibility kwimport no kwend [n2]:n1 {-> New import.no(visibility, kwimport, kwend)}
221 = {classdef} classdef {-> classdef}
222 | propdefs_toplevel {-> New classdef.top([propdefs_toplevel.propdef])}
225 implicit_main_class {-> classdef?}
226 = implicit_main_meth {-> New classdef.main([implicit_main_meth.propdef])}
227 | {null} n? {-> Null}
229 implicit_main_meth {-> propdef}
230 = [doc]:no stmts {-> New propdef.main_meth(Null, stmts.expr)}
231 | {n} [doc]:no stmtsn {-> New propdef.main_meth(Null, stmtsn.expr)}
234 /* CLASSES *******************************************************************/
236 = [doc]:no redef visibility classkind no qclassid formaldefs line_annotations_forclass? extern_code_block? [superclasses]:superclass* propdefs* [n2]:no kwend {-> New classdef.std(doc.doc, redef.kwredef, visibility, classkind, qclassid.classid, [formaldefs.formaldef], line_annotations_forclass.annotations, extern_code_block, [superclasses.superclass], [propdefs.propdef], kwend)};
238 = kwredef? {-> kwredef};
241 | {abstract} kwabstract kwclass
242 | {interface} kwinterface
244 | {extern} kwextern kwclass
247 formaldefs {-> formaldef*}
248 = obra no formaldef formaldefs_tail* [n2]:no cbra {-> [formaldef, formaldefs_tail.formaldef]}
251 formaldefs_tail {-> formaldef}
252 = comma no formaldef {-> formaldef};
254 = classid annotations? typing_o {-> New formaldef(classid, typing_o.type, annotations)};
256 superclass {-> superclass}
257 = {super} no kwsuper [n2]:no type annotation_withend {-> New superclass(kwsuper, type, annotation_withend.annotations)}
260 propdefs~toplevel {-> propdef}
261 = propdef~toplevel n1 {-> propdef~toplevel.propdef}
263 propdef~toplevel {-> propdef}
264 = {meth} [doc]:no 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, stmtso.expr)}
265 | {nobody} [doc]:no 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)}
266 !toplevel| {intern_new} [doc]:no 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)}
267 !toplevel| {new} [doc]:no 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, stmtso.expr)}
268 | {extern_implicit} [doc]:no 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)}
269 !toplevel| {var3} [doc]:no redef visibility kwvar id typing_o annotation_withend {-> New propdef.attr(doc.doc, redef.kwredef, visibility, kwvar, id, typing_o.type, Null, annotation_withend.annotations, Null)}
270 !toplevel| {var4} [doc]:no 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, expr.expr, annotation_withend.annotations, Null)}
271 !toplevel| {var5} [doc]:no 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, annotation_noend.annotations, stmtso.expr)}
272 !toplevel| {init} [doc]:no 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, stmtso.expr)}
273 !toplevel| {type} [doc]:no redef visibility kwtype classid typing annotation_withend {-> New propdef.type(doc.doc, redef.kwredef, visibility, kwtype, classid, typing.type, annotation_withend.annotations)}
274 !toplevel| {extern_init_implicit} [doc]:no 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)}
276 annotation_withend~nonull {-> annotations?}
277 = {oneliner} kwis many_annotations {-> many_annotations.annotations}
278 | {more} kwis n1 line_annotations kwend {-> line_annotations.annotations}
279 !nonull | {null} {-> Null}
281 annotation_noend {-> annotations}
282 = {oneliner} kwis many_annotations {-> many_annotations.annotations}
283 | {more} kwis n1 line_annotations {-> line_annotations.annotations}
287 = {public} {-> New visibility.public(Null)}
288 | {public2} kwpublic no {-> New visibility.public(kwpublic)}
289 | {private} kwprivate no {-> New visibility.private(kwprivate)}
290 | {protected} kwprotected no {-> New visibility.protected(kwprotected)}
291 | {intrude} kwintrude no {-> New visibility.intrude(kwintrude)}
294 methid~noid {-> methid}
295 = {plus} plus {-> New methid.plus(plus)}
296 | {minus} minus {-> New methid.minus(minus)}
297 | {star} star {-> New methid.star(star)}
298 | {starstar} starstar {-> New methid.starstar(starstar)}
299 | {slash} slash {-> New methid.slash(slash)}
300 | {percent} percent {-> New methid.percent(percent)}
301 | {eq} eq {-> New methid.eq(eq)}
302 | {ne} ne {-> New methid.ne(ne)}
303 | {le} le {-> New methid.le(le)}
304 | {ge} ge {-> New methid.ge(ge)}
305 | {lt} lt {-> New methid.lt(lt)}
306 | {gt} gt {-> New methid.gt(gt)}
307 | {ll} ll {-> New methid.ll(ll)}
308 | {gg} gg {-> New methid.gg(gg)}
309 | {bra} obra cbra {-> New methid.bra(obra, cbra)}
310 | {starship} starship {-> New methid.starship(starship)}
311 | {assign} id assign {-> New methid.assign(id, assign)}
312 | {braassign} obra cbra assign {-> New methid.braassign(obra, cbra, assign)}
313 !noid | {id} id {-> New methid.id(id)}
316 signature {-> signature}
317 = opar no params cpar typing [no2]:no {-> New signature(opar, [params.param], cpar, typing.type)}
318 | {noret} opar no params cpar [no2]:no {-> New signature(opar, [params.param], cpar, Null)}
319 | {nopar} typing no {-> New signature(Null, [], Null, typing.type)}
320 | {noparnoret} no {-> New signature(Null, [], Null, Null)}
324 = param params_tail* [n2]:no {-> [param, params_tail.param] }
327 params_tail {-> param}
328 = comma no param {-> param};
330 = {untyped} id annotations_o {-> New param(id, Null, Null, annotations_o.annotations)}
331 | id annotations? typing dotdotdot? {-> New param(id, typing.type, dotdotdot, annotations)}
334 extern_calls {-> extern_calls?}
335 = kwimport no extern_call extern_call_tail* {-> New extern_calls( kwimport, [extern_call, extern_call_tail.extern_call] )}
338 extern_call_tail {-> extern_call}
339 = comma no extern_call {-> extern_call};
340 extern_call {-> extern_call}
341 = {prop} extern_call_prop {-> extern_call_prop.extern_call}
342 | {cast} extern_call_cast {-> extern_call_cast.extern_call}
343 | {super} kwsuper {-> New extern_call.super( kwsuper )}
345 extern_call_prop {-> extern_call}
346 = {local} qmethid {-> New extern_call.local_prop( qmethid.methid )}
347 | {full} type dot qmethid {-> New extern_call.full_prop( type, dot, qmethid.methid )}
348 | {init} type {-> New extern_call.init_prop( type )}
350 extern_call_cast {-> extern_call}
351 = {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)}
352 | {as_cast2}[from_type]:type dot kwas [n2]:no [to_type]:type {-> New extern_call.cast_as(from_type, dot, kwas, to_type)}
353 | {as_nullable} type dot kwas [n2]:no opar [n3]:no kwnullable [n4]:no cpar {-> New extern_call.as_nullable( type, kwas, kwnullable)}
354 | {as_nullable2}type dot kwas [n2]:no kwnullable {-> New extern_call.as_nullable( type, kwas, kwnullable)}
355 | {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)}
356 | {as_not_nullable2}type dot kwas [n2]:no kwnot [n3]:no kwnullable {-> New extern_call.as_not_nullable( type, kwas, kwnot, kwnullable)}
359 string_o {->string?} = string? {-> string};
361 in_language = kwin no string [n1]:no {-> New in_language(kwin, string)};
362 extern_code_block = in_language? extern_code_segment;
363 extern_code_block_o {-> extern_code_block?}
364 = extern_code_block {-> extern_code_block}
367 extern_code_body {-> extern_code_block} = no extern_code_block {-> extern_code_block};
369 /* TYPES *********************************************************************/
370 type~nobra~nopar {-> type}
371 = {simple} kwnullable? classid annotations_o~nopar {-> New type(kwnullable, classid, [], annotations_o~nopar.annotations)}
372 !nobra | {generic} kwnullable? classid obra no types [n2]:no cbra annotations_o~nopar {-> New type(kwnullable, classid, [types.type], annotations_o~nopar.annotations)}
375 = type types_tail* {-> [type, types_tail.type]};
377 = comma no type {-> type};
379 = column no type {-> type};
381 = column no type {-> type}
385 /* STATMENTS *****************************************************************/
386 stmtso~withelse~withend {-> expr?}
387 = {block} n stmtsnend {-> stmtsnend.expr}
388 | {emptyblock} n kwend {-> New expr.block([], kwend)}
389 | {emptyoneline} kwend {-> New expr.block([], kwend)}
390 !withend| {oneline} stmt~withelse {-> stmt~withelse.expr}
393 = stmt stmts_tail* {-> New expr.block([stmt.expr, stmts_tail.expr], Null)};
395 = stmt stmts_tail* n {-> New expr.block([stmt.expr, stmts_tail.expr], Null)};
397 = stmt stmts_tail* n kwend {-> New expr.block([stmt.expr, stmts_tail.expr], kwend)};
399 = n stmt {-> stmt.expr};
400 stmt~withelse~noexpr~nopar {-> expr}
401 = {vardecl} vardecl {-> vardecl.expr}
402 | {assign} assignment~nopar {-> assignment~nopar.expr}
403 | {return} kwreturn expr? {-> New expr.return(kwreturn, expr)}
404 | {break} kwbreak label? {-> New expr.break(kwbreak, label)}
405 | {abort} kwabort {-> New expr.abort(kwabort)}
406 | {continue} kwcontinue label? {-> New expr.continue(kwcontinue, label)}
407 | {do} do~withelse {-> do~withelse.expr}
408 !noexpr | {if} if~withelse {-> if~withelse.expr}
409 | {while} while~withelse {-> while~withelse.expr}
410 | {loop} loop~withelse {-> loop~withelse.expr}
411 | {for} for~withelse {-> for~withelse.expr}
412 | {assert} assert~withelse {-> assert~withelse.expr}
413 !noexpr | {call} recv qid args_nopar {-> New expr.call(recv.expr, qid.id, args_nopar.exprs)}
414 !noexpr | {super} qualified_o kwsuper args_nopar {-> New expr.super(qualified_o.qualified, kwsuper, args_nopar.exprs)}
415 !noexpr | {init} recv qualified? kwinit args_nopar {-> New expr.init(recv.expr, kwinit, args_nopar.exprs)}
416 | {debug_type_is} kwdebug kwtype type column expr {-> New expr.debug_type(kwdebug, kwtype, expr.expr, type) }
422 = kwvar id annotations? typing_o {-> New expr.vardecl(kwvar, id, typing_o.type, Null, Null, annotations)}
423 | {assign} kwvar id annotations? typing_o assign no expr {-> New expr.vardecl(kwvar, id, typing_o.type, assign, expr.expr, annotations)}
426 assignment~nopar {-> expr}
427 = {attr} recv~nopar qualified_o attrid assign expr {-> New expr.attr_assign(recv~nopar.expr, attrid, assign, expr)}
428 | {call} recv~nopar qid args assign expr {-> New expr.call_assign(recv~nopar.expr, qid.id, args.exprs, assign, expr)}
429 | {bra} expr_atom~nopar braargs assign expr {-> New expr.bra_assign(expr_atom~nopar.expr, braargs.exprs, assign, expr)}
430 | {attr_re} recv~nopar qualified_o attrid assign_op expr {-> New expr.attr_reassign(recv~nopar.expr, attrid, assign_op, expr)}
431 | {call_re} recv~nopar qid args assign_op expr {-> New expr.call_reassign(recv~nopar.expr, qid.id, args.exprs, assign_op, expr)}
432 | {bra_re} expr_atom~nopar braargs assign_op expr {-> New expr.bra_reassign(expr_atom~nopar.expr, braargs.exprs, assign_op, expr)}
439 do~withelse {-> expr}
440 = kwdo stmtso_withend label {-> New expr.do(kwdo, stmtso_withend.expr, label)}
441 | {nolabel} kwdo stmtso~withelse {-> New expr.do(kwdo, stmtso~withelse.expr, Null)}
444 if~withelse {-> expr}
445 = {onelineelse} kwif no expr [n2]:no kwthen stmt_withelse kwelse stmtso~withelse {-> New expr.if(kwif, expr, stmt_withelse.expr, stmtso~withelse.expr)}
446 !withelse | {oneline} kwif no expr [n2]:no kwthen stmt {-> New expr.if(kwif, expr, stmt.expr, Null)}
447 !withelse | {block} kwif no expr [n2]:no kwthen [n3]:n stmtsn elsepartblock {-> New expr.if(kwif, expr, stmtsn.expr, elsepartblock.expr)}
448 !withelse | {emptyblock} kwif no expr [n2]:no kwthen [n3]:n? elsepartblock {-> New expr.if(kwif, expr, Null, elsepartblock.expr)}
450 elsepartblock {-> expr?}
451 = {else} kwelse stmtso {-> stmtso.expr}
452 | {empty} kwend {-> New expr.block([], kwend)}
455 loop~withelse {-> expr}
456 = kwloop stmtso_withend label {-> New expr.loop(kwloop, stmtso_withend.expr, label)}
457 | {nolabel} kwloop stmtso~withelse {-> New expr.loop(kwloop, stmtso~withelse.expr, Null)}
460 while~withelse {-> expr}
461 = kwwhile no expr [n2]:no kwdo stmtso_withend label {-> New expr.while(kwwhile, expr, kwdo, stmtso_withend.expr, label)}
462 | {nolabel} kwwhile no expr [n2]:no kwdo stmtso~withelse {-> New expr.while(kwwhile, expr, kwdo, stmtso~withelse.expr, Null)}
465 for~withelse {-> expr}
466 = kwfor no [ids]:idlist [n2]:no kwin [n3]:no expr [n4]:no kwdo stmtso_withend label {-> New expr.for(kwfor, [ids.id], expr, kwdo, stmtso_withend.expr, label)}
467 | {nolabel} kwfor no [ids]:idlist [n2]:no kwin [n3]:no expr [n4]:no kwdo stmtso~withelse {-> New expr.for(kwfor, [ids.id], expr, kwdo, stmtso~withelse.expr, Null)}
470 assert~withelse {-> expr}
471 = {else} kwassert assertid? expr kwelse stmtso~withelse {-> New expr.assert(kwassert, assertid.id, expr, stmtso~withelse.expr)}
472 !withelse| {noelse} kwassert assertid? expr {-> New expr.assert(kwassert, assertid.id, expr, Null)}
477 /* EXPRESSIONS ***************************************************************/
478 expr~nopar~nobra {-> expr}
479 = expr_and~nopar~nobra {-> expr_and~nopar~nobra.expr}
480 | {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)}
483 expr_and~nopar~nobra {-> expr}
484 = expr_not~nopar~nobra {-> expr_not~nopar~nobra.expr}
485 | {:or} expr_and~nopar~nobra :kwor :no expr_not~nopar~nobra
486 | {:and} expr_and~nopar~nobra :kwand :no expr_not~nopar~nobra
487 | {:or_else} expr_and~nopar~nobra :kwor :kwelse :no expr_not~nopar~nobra
488 | {:implies} expr_and~nopar~nobra :kwimplies :no expr_not~nopar~nobra
491 expr_not~nopar~nobra {-> expr}
492 = expr_eq~nopar~nobra {-> expr_eq~nopar~nobra.expr}
493 | {not} kwnot no expr_not~nopar~nobra {-> New expr.not(kwnot, expr_not~nopar~nobra.expr)}
496 expr_eq~nopar~nobra {-> expr}
497 = expr_add~nopar~nobra {-> expr_add~nopar~nobra.expr}
498 | {:eq} expr_add~nopar~nobra :eq :no [expr2]:expr_add~nopar~nobra
499 | {:ne} expr_add~nopar~nobra :ne :no [expr2]:expr_add~nopar~nobra
500 | {:lt} expr_add~nopar~nobra :lt :no [expr2]:expr_add~nopar~nobra
501 | {:le} expr_add~nopar~nobra :le :no [expr2]:expr_add~nopar~nobra
502 | {:ll} expr_eq~nopar~nobra :ll :no [expr2]:expr_add~nopar~nobra
503 | {:gt} expr_add~nopar~nobra :gt :no [expr2]:expr_add~nopar~nobra
504 | {:ge} expr_add~nopar~nobra :ge :no [expr2]:expr_add~nopar~nobra
505 | {:gg} expr_eq~nopar~nobra :gg :no [expr2]:expr_add~nopar~nobra
506 | {:starship} expr_add~nopar~nobra :starship :no [expr2]:expr_add~nopar~nobra
507 | {:isa} expr_add~nopar~nobra :kwisa :no type~nobra
510 expr_add~nopar~nobra {-> expr}
511 = expr_mul~nopar~nobra {-> expr_mul~nopar~nobra.expr}
512 | {:plus} expr_add~nopar~nobra :plus :no [expr2]:expr_mul~nopar~nobra
513 | {:minus} expr_add~nopar~nobra :minus :no [expr2]:expr_mul~nopar~nobra
516 expr_mul~nopar~nobra {-> expr}
517 = expr_pow~nopar~nobra {-> expr_pow~nopar~nobra.expr}
518 | {:star} expr_mul~nopar~nobra :star :no [expr2]:expr_pow~nopar~nobra
519 | {:slash} expr_mul~nopar~nobra :slash :no [expr2]:expr_pow~nopar~nobra
520 | {:percent} expr_mul~nopar~nobra :percent :no [expr2]:expr_pow~nopar~nobra
523 expr_pow~nopar~nobra {-> expr}
524 = expr_minus~nopar~nobra {-> expr_minus~nopar~nobra.expr}
525 | {:starstar} expr_minus~nopar~nobra :starstar :no [expr2]:expr_pow~nopar~nobra
528 expr_minus~nopar~nobra {-> expr}
529 = expr_new~nopar~nobra {-> expr_new~nopar~nobra.expr}
530 | {:uminus} minus expr_minus~nobra
531 | {:once} kwonce :no expr_minus~nobra
534 expr_new~nopar~nobra {-> expr}
535 = expr_atom~nopar~nobra {-> expr_atom~nopar~nobra.expr}
536 | {new} kwnew no type~nobra_nopar args {-> New expr.new(kwnew, type~nobra_nopar.type, Null, args.exprs)}
537 | {isset_attr} kwisset recv~nopar~nobra qualified_o attrid {-> New expr.isset_attr(kwisset, recv~nopar~nobra.expr, attrid)}
540 expr_atom~nopar~nobra {-> expr}
541 = expr_single~nopar~nobra {-> expr_single~nopar~nobra.expr}
542 | {attr} recv~nopar~nobra qualified_o attrid {-> New expr.attr(recv~nopar~nobra.expr, attrid)}
543 | {call} recv~nopar~nobra qid args {-> New expr.call(recv~nopar~nobra.expr, qid.id, args.exprs)}
544 | {super} qualified_o kwsuper args {-> New expr.super(qualified_o.qualified, kwsuper, args.exprs)}
545 | {init} recv~nopar~nobra kwinit args {-> New expr.init(recv~nopar~nobra.expr, kwinit, args.exprs)}
546 !nobra | {bra} expr_atom~nopar braargs {-> New expr.bra(expr_atom~nopar.expr, braargs.exprs)}
547 | {new} kwnew no type~nobra_nopar dot [n2]:no qid args {-> New expr.new(kwnew, type~nobra_nopar.type, qid.id, args.exprs)}
548 | {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)}
549 | {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)}
550 | {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)}
551 | {vararg} [expr]:expr_atom~nopar~nobra dotdotdot {-> New expr.vararg(expr.expr, dotdotdot)}
554 expr_single~nopar~nobra {-> expr}
555 = {self} kwself annotations_o {-> New expr.self(kwself, annotations_o.annotations)}
556 | {true} kwtrue annotations_o {-> New expr.true(kwtrue, annotations_o.annotations)}
557 | {false} kwfalse annotations_o {-> New expr.false(kwfalse, annotations_o.annotations)}
558 | {null} kwnull annotations_o {-> New expr.null(kwnull, annotations_o.annotations)}
559 | {int} number annotations_o {-> New expr.dec_int(number, annotations_o.annotations)}
560 | {hex_int} hex_number annotations_o {-> New expr.hex_int(hex_number, annotations_o.annotations)}
561 | {float} float annotations_o {-> New expr.float(float, annotations_o.annotations)}
562 | {char} char annotations_o {-> New expr.char(char, annotations_o.annotations)}
563 | {string} string annotations_o {-> New expr.string(string, annotations_o.annotations)}
564 | {superstring} superstring {-> superstring.expr}
565 !nopar | {par} expr_par {-> expr_par.expr}
566 // !nopar to unambiguise 'foo[5].bar' between '(foo[5]).bar' and 'foo([5].bar),
567 !nobra!nopar | {range} obra no expr [n2]:no dotdot [n3]:no [expr2]:expr_nobra [n4]:no cbra annotations_o {-> New expr.crange(obra, expr, expr2.expr, cbra, annotations_o.annotations)}
568 !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, expr2.expr, cbra, annotations_o.annotations)}
569 !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)}
573 = {par} opar no any_expr [n2]:no cpar annotations_o {-> New expr.par(opar, any_expr.expr, cpar, annotations_o.annotations)}
574 | {tuple} opar no many_expr [n2]:no cpar annotations_o {-> New expr.par(opar, many_expr.expr, cpar, annotations_o.annotations)}
578 = any_expr many_expr_tail+ {-> New expr.many([any_expr.expr, many_expr_tail.expr])}
581 many_expr_tail {->expr}
582 = comma no any_expr {-> any_expr.expr}
585 array_items {-> expr*}
586 = array_item array_items_tail* {-> [array_item.expr, array_items_tail.expr]}
588 array_items_tail {-> expr}
589 = comma no array_item {-> array_item.expr}
593 | {for} kwfor no [ids]:idlist [n2]:no kwin [n3]:no expr [n4]:no kwdo [block]:array_item {-> New expr.for(kwfor, [ids.id], expr, kwdo, block.expr, Null)}
594 | {if} kwif [n1]:no expr [n2]:no kwthen [n3]:no [then]:array_item {-> New expr.if(kwif, expr, then.expr, Null)}
597 superstring {-> expr}
598 = superstring_start superstring_middle* superstring_end annotations_o {-> New expr.superstring([superstring_start.expr, superstring_middle.expr, superstring_end.expr], annotations_o.annotations)};
599 superstring_start {-> expr*}
600 = start_string_p no expr [n2]:no {-> [start_string_p.expr, expr]}
601 | {noexpr} start_string_p no {-> [start_string_p.expr]}
603 start_string_p {-> expr}
604 = start_string {-> New expr.start_string(start_string)};
605 superstring_middle {-> expr*}
606 = mid_string_p no expr [n2]:no {-> [mid_string_p.expr, expr]}
607 | {noexpr} mid_string_p no {-> [mid_string_p.expr]}
609 mid_string_p {-> expr}
610 = mid_string {-> New expr.mid_string(mid_string)};
611 superstring_end {-> expr}
612 = end_string {-> New expr.end_string(end_string)};
614 /* ANNOTATIONS *******************************************************************/
616 annotations~nopar {-> annotations}
617 = {one} at one_annotation~nopar {-> New annotations(at, Null, [one_annotation~nopar.annotation], Null)}
618 | {many} at opar no annotation_list [n2]:no cpar {-> New annotations(at, opar, [annotation_list.annotation], cpar)}
620 annotations_o~nopar {-> annotations?}
621 = annotations~nopar {-> annotations~nopar.annotations}
625 one_annotation~nopar {-> annotation}
626 = {alone} redef visibility atid annotations_o~nopar {-> New annotation(Null, redef.kwredef, visibility, atid, Null, [], Null, annotations_o~nopar.annotations)}
627 // !nopar to unambiguise 'new T@foo(bar)' between 'new T@(foo(bar))' and 'new (T@foo)(bar)'
628 !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)}
631 many_annotations {-> annotations}
632 = {many} annotation_list {-> New annotations(Null, Null, [annotation_list.annotation], Null)}
635 annotation_list {-> annotation*}
636 = {many} one_annotation_list annotations_tail* {-> [one_annotation_list.annotation, annotations_tail.annotation] }
639 one_annotation_list~nopar {-> annotation}
640 = {alone} redef visibility atid annotations_o~nopar {-> New annotation(Null, redef.kwredef, visibility, atid, Null, [], Null, annotations_o~nopar.annotations)}
641 // !nopar to unambiguise 'new T@foo(bar)' between 'new T@(foo(bar))' and 'new (T@foo)(bar)'
642 !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)}
643 !nopar | {nopar} redef visibility atid at_arg_single {-> New annotation(Null, redef.kwredef, visibility, atid, Null, [at_arg_single.expr], Null, Null)}
645 at_arg_single {-> expr}
646 // FIXME: why expr_single but not expr_atom is not clear :(
647 = {expr} [expr]:expr_single_nopar {-> expr.expr}
650 annotations_tail {-> annotation}
651 = comma no one_annotation_list {-> one_annotation_list.annotation}
654 line_annotations {-> annotations}
655 = line_annotation+ {-> New annotations(Null, Null, [line_annotation.annotation], Null) }
657 line_annotation {-> annotation}
658 = [doc]:no redef visibility atid annotations? n1 {-> New annotation(doc.doc, redef.kwredef, visibility, atid.atid, Null, [], Null, annotations)}
659 | {args} [doc]:no 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)}
660 | {nopar} [doc]:no redef visibility atid at_args_nopar n1 {-> New annotation(doc.doc, redef.kwredef, visibility, atid.atid, Null, [at_args_nopar.expr], Null, Null)}
662 line_annotations_forclass {-> annotations}
663 = line_annotation_forclass+ {-> New annotations(Null, Null, [line_annotation_forclass.annotation], Null) }
665 line_annotation_forclass {-> annotation}
666 = [doc]:no atid_forclass annotations? n1 {-> New annotation(doc.doc, Null, Null, atid_forclass.atid, Null, [], Null, annotations)}
667 | {args} [doc]:no atid_forclass opar no at_args cpar annotations? n1 {-> New annotation(doc.doc, Null, Null, atid_forclass.atid, opar, [at_args.expr], cpar, annotations)}
668 | {nopar} [doc]:no atid_forclass at_args_nopar n1 {-> New annotation(doc.doc, Null, Null, atid_forclass.atid, Null, [at_args_nopar.expr], Null, Null)}
671 at_args~nopar {-> expr* }
672 = {many} any_expr~nopar at_args_tail* {-> [any_expr~nopar.expr, at_args_tail.expr]}
675 at_args_tail {-> expr}
676 = comma no any_expr {-> any_expr.expr}
679 any_expr~nopar {-> expr}
680 = {type} type {-> New expr.type(type)}
681 | {expr} expr~nopar {-> expr~nopar.expr}
682 | {stmt} stmt_noexpr~nopar {-> stmt_noexpr~nopar.expr}
683 | {methid} recv~nopar qmethid_noid {-> New expr.methid(recv~nopar.expr, qmethid_noid.methid)}
684 !nopar | {at} annotations {-> New expr.at(annotations.annotations)}
687 atid~forclass {-> atid}
688 = {id} id {-> New atid.id(id)}
689 !forclass | {kwextern} kwextern {-> New atid.kwextern(kwextern)}
690 // | {kwimport} kwimport {-> New atid.kwimport(kwimport)}
691 | {kwabstract} kwabstract {-> New atid.kwabstract(kwabstract)}
694 /* MISC **********************************************************************/
696 recv~nopar~nobra {-> expr}
697 = expr_atom~nopar~nobra dot no {-> expr_atom~nopar~nobra.expr}
698 | {implicit} {-> New expr.implicit_self()}
702 = args_n {-> args_n.exprs}
703 | {empty} {-> New exprs.list([])}
706 = opar no expr_list cpar {-> New exprs.par(opar, [expr_list.expr], cpar) }
707 | {emptypar} opar no cpar {-> New exprs.par(opar, [], cpar) }
709 args_nopar {-> exprs}
710 = opar no expr_list cpar {-> New exprs.par(opar, [expr_list.expr], cpar) }
711 | {onearg} expr_nopar {-> New exprs.list([expr_nopar.expr])}
712 | {emptypar} opar no cpar {-> New exprs.par(opar, [], cpar) }
713 | {empty} {-> New exprs.list([])}
716 = obra no expr_list cbra {-> New exprs.bra(obra, [expr_list.expr], cbra)};
718 = expr_list {-> New exprs.list([expr_list.expr])};
720 = expr [n2]:no expr_tail* {-> [expr, expr_tail.expr]};
722 = comma no expr [n2]:no {-> expr};
724 = opar no idlist_nopar [n2]:no cpar {-> [idlist_nopar.id]}
725 | {nopar} idlist_nopar {-> [idlist_nopar.id]}
727 idlist_nopar {-> id*}
728 = {single} id {-> [id]}
729 | {more} idlist_nopar comma [n2]:no id {-> [idlist_nopar.id, id]}
732 module_name {-> module_name}
733 = {mod} modquad* id {-> New module_name(Null, [modquad.id], id)}
734 | {root} quad no modquad* id {-> New module_name(quad, [modquad.id], id)}
738 = {cla} modquad* classquad {-> New qualified([modquad.id], classquad.classid)}
739 | {mod} modquad+ {-> New qualified([modquad.id], Null)}
741 qualified_o {-> qualified?}
742 = qualified {-> qualified}
746 = qualified? id {-> id}
748 qclassid {-> classid}
749 = qualified? classid {-> classid}
751 qmethid~noid {-> methid}
752 = qualified? methid~noid {-> methid~noid.methid}
755 = id quad no {-> id};
756 classquad {-> classid}
757 = classid quad no {-> classid};
763 n1 = {a} comment | {b} eol;
765 = {a} n2? comment+ {-> New doc([comment])}
774 = {a} n2? comment+ eol+
778 /*****************************************************************************/
780 /*****************************************************************************/
782 module = moduledecl? [imports]:import* [extern_code_blocks]:extern_code_block* [classdefs]:classdef*;
785 = doc? kwredef? visibility kwmodule [name]:module_name annotations?;
787 import = {std} visibility kwimport [name]:module_name annotations?
788 | {no} visibility kwimport kwend
793 | {private} kwprivate
794 | {protected} kwprotected
795 | {intrude} kwintrude
798 classdef= {std} doc? kwredef? visibility classkind [id]:classid? [formaldefs]:formaldef* annotations? extern_code_block? [superclasses]:superclass* [propdefs]:propdef* kwend
799 | {top} [propdefs]:propdef*
800 | {main} [propdefs]:propdef*
804 | {abstract} kwabstract kwclass
805 | {interface} kwinterface
807 | {extern} kwextern kwclass?
809 formaldef = [id]:classid type? annotations?;
810 superclass = kwsuper type annotations?;
813 propdef = {attr} doc? kwredef? visibility kwvar [id2]:id type? expr? annotations? [block]:expr?
814 | {main_meth} kwredef? [block]:expr?
815 | {type} doc? kwredef? visibility kwtype [id]:classid type annotations?
816 | {meth} doc? kwredef? visibility kwmeth? kwinit? kwnew? methid? signature annotations? extern_calls? extern_code_block? [block]:expr?
819 methid = {id} id | {plus} plus | {minus} minus | {star} star | {starstar} starstar | {slash} slash | {percent} percent | {eq} eq | {ne} ne | {le} le | {ge} ge | {lt} lt | {gt} gt | {ll} ll | {gg} gg | {bra} obra cbra | {starship} starship | {assign} id assign | {braassign} obra cbra assign;
821 signature = opar? [params]:param* cpar? type?;
823 param = id type? dotdotdot? annotations?
826 type = kwnullable? [id]:classid [types]:type* annotations?;
830 expr = {block} expr* kwend?
831 | {vardecl} kwvar id type? assign? expr? annotations?
832 | {return} kwreturn? expr?
833 | {break} kwbreak label?
835 | {continue} kwcontinue? label?
836 | {do} kwdo [block]:expr? label?
837 | {if} kwif expr [then]:expr? [else]:expr?
838 | {ifexpr} kwif expr kwthen [then]:expr kwelse [else]:expr
839 | {while} kwwhile expr kwdo [block]:expr? label?
840 | {loop} kwloop [block]:expr? label?
841 | {for} kwfor [ids]:id* expr kwdo [block]:expr? label?
842 | {assert} kwassert id? expr [else]:expr?
845 | {binop} expr [expr2]:expr
846 | {or} expr [expr2]:expr
847 | {and} expr [expr2]:expr
848 | {or_else} expr [expr2]:expr
849 | {implies} expr [expr2]:expr
851 | {eq} expr [expr2]:expr
852 | {ne} expr [expr2]:expr
853 | {lt} expr [expr2]:expr
854 | {le} expr [expr2]:expr
855 | {ll} expr [expr2]:expr
856 | {gt} expr [expr2]:expr
857 | {ge} expr [expr2]:expr
858 | {gg} expr [expr2]:expr
860 | {plus} expr [expr2]:expr
861 | {minus} expr [expr2]:expr
862 | {starship} expr [expr2]:expr
863 | {star} expr [expr2]:expr
864 | {starstar} expr [expr2]:expr
865 | {slash} expr [expr2]:expr
866 | {percent} expr [expr2]:expr
867 | {uminus} minus expr
868 | {new} kwnew type id? [args]:exprs
869 | {attr} expr [id]:attrid
870 | {attr_assign} expr [id]:attrid assign [value]:expr
871 | {attr_reassign} expr [id]:attrid assign_op [value]:expr
872 | {call} expr id [args]:exprs
873 | {call_assign} expr id [args]:exprs assign [value]:expr
874 | {call_reassign} expr id [args]:exprs assign_op [value]:expr
875 | {super} qualified? kwsuper [args]:exprs
876 | {init} expr kwinit [args]:exprs
877 | {bra} expr [args]:exprs
878 | {bra_assign} expr [args]:exprs assign [value]:expr
879 | {bra_reassign} expr [args]:exprs assign_op [value]:expr
881 | {var_assign} id assign [value]:expr
882 | {var_reassign} id assign_op [value]:expr
883 | {range} expr [expr2]:expr annotations?
884 | {crange} obra expr [expr2]:expr cbra annotations?
885 | {orange} obra expr [expr2]:expr [cbra]:obra annotations?
886 | {array} obra [exprs]:expr* type? cbra annotations?
887 | {self} kwself annotations?
889 | {true} kwtrue annotations?
890 | {false} kwfalse annotations?
891 | {null} kwnull annotations?
892 | {dec_int} number annotations?
893 | {hex_int} hex_number annotations?
894 | {float} float annotations?
895 | {char} char annotations?
896 | {string} string annotations?
897 | {start_string} [string]:start_string
898 | {mid_string} [string]:mid_string
899 | {end_string} [string]:end_string
900 | {superstring} [exprs]:expr* annotations?
901 | {par} opar expr cpar annotations?
902 | {as_cast} expr kwas opar? type cpar?
903 | {as_notnull} expr kwas opar? kwnot kwnull cpar?
904 | {isset_attr} kwisset expr [id]:attrid
905 | {debug_type} kwdebug kwtype expr type
906 | {vararg} expr dotdotdot
908 | {methid} expr [id]:methid
910 | {many} [exprs]:expr*
913 = {list} [exprs]:expr*
914 | {par} opar [exprs]:expr* cpar
915 | {bra} obra [exprs]:expr* cbra
922 module_name = quad? [path]:id* id;
923 extern_calls = kwimport [extern_calls]:extern_call*
927 | {local_prop} methid
928 | {full_prop} type dot? methid
930 | {cast_as} [from_type]:type dot? kwas [to_type]:type
931 | {as_nullable} type kwas kwnullable
932 | {as_not_nullable} type kwas kwnot kwnullable
934 in_language = kwin string;
935 extern_code_block = in_language? extern_code_segment;
937 qualified = id* classid? ;
941 annotations = at? opar? [items]:annotation* cpar?;
943 annotation = doc? kwredef? visibility? atid opar? [args]:expr* cpar? annotations?;
945 atid = {id} id | {kwextern} [id]:kwextern | {kwabstract} [id]:kwabstract | {kwimport} [id]:kwimport;
947 /*****************************************************************************/