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';
149 kwdebug = '__debug__';
188 classid = uppercase letter*;
189 id = lowercase letter*;
190 attrid = '_' lowercase letter*;
193 hex_number = ('0x' | '0X') hexdigit+;
194 float = digit* '.' digit+;
195 string = '"' str_body '"' | '"' '"' '"' long_str_body lsend1 | ''' ''' ''' long_sstr_body ''' ''' ''';
196 start_string = '"' str_body '{' | '"' '"' '"' long_str_body lsend2;
197 mid_string = '}' str_body '{' | '}' '}' '}' long_str_body lsend2;
198 end_string = '}' str_body '"' | '}' '}' '}' long_str_body lsend1;
199 char = (''' [[any - '''] - '\'] ''') | (''' '\' any ''');
200 bad_string = ('"'|'}') str_body | '"' '"' '"' long_str_body | ''' ''' ''' long_sstr_body;
201 bad_char = ''' '\'? any;
203 extern_code_segment = '`' '{' extern_code_body '`' '}';
205 /*****************************************************************************/
207 /*****************************************************************************/
211 /*****************************************************************************/
213 /*****************************************************************************/
215 /* MODULES *******************************************************************/
217 = 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])};
220 = [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)};
223 = {std} [doc]:no redef visibility kwimport no module_name annotation_withend [n2]:n1 {-> New import.std(visibility, kwimport, module_name, annotation_withend.annotations)}
224 | {no} [doc]:no redef visibility kwimport no kwend [n2]:n1 {-> New import.no(visibility, kwimport, kwend)}
228 = {classdef} classdef {-> classdef}
229 | propdef_toplevel n1 {-> New classdef.top([propdef_toplevel.propdef])}
232 implicit_main_class {-> classdef?}
233 = implicit_main_meth {-> New classdef.main([implicit_main_meth.propdef])}
234 | {null} n? {-> Null}
236 implicit_main_meth {-> propdef}
237 = [doc]:no stmts {-> New propdef.main_meth(Null, stmts.expr)}
238 | {n} [doc]:no stmtsn {-> New propdef.main_meth(Null, stmtsn.expr)}
241 /* CLASSES *******************************************************************/
243 = [doc]:no redef visibility classkind no qclassid formaldefs extern_code_block? propdefs kwend {-> New classdef.std(doc.doc, redef.kwredef, visibility, classkind, qclassid.classid, [formaldefs.formaldef], extern_code_block, [propdefs.propdef], kwend)};
245 = kwredef? {-> kwredef};
248 | {abstract} kwabstract kwclass
249 | {interface} kwinterface
251 | {extern} kwextern kwclass
254 formaldefs {-> formaldef*}
255 = obra no formaldef formaldefs_tail* [n2]:no cbra {-> [formaldef, formaldefs_tail.formaldef]}
258 formaldefs_tail {-> formaldef}
259 = comma no formaldef {-> formaldef};
261 = classid annotations? typing_o {-> New formaldef(classid, typing_o.type, annotations)};
263 superclass {-> propdef}
264 = {super} [doc]:no redef visibility kwsuper [n2]:no type annotation_withend {-> New propdef.super(doc.doc, redef.kwredef, visibility, kwsuper, type, annotation_withend.annotations)}
267 propdefs {-> propdef*}
268 = propdefn+ no {-> [propdefn.propdef]}
269 | {super} superclass {-> [superclass.propdef]}
272 propdefn {-> propdef}
273 = propdef n1 {-> propdef.propdef}
275 propdef~toplevel {-> propdef}
276 = {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)}
277 | {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)}
278 !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)}
279 !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)}
280 | {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)}
281 !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)}
282 !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)}
283 !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)}
284 !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)}
285 !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)}
286 !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)}
287 !toplevel| {annot} line_annotation_forclass {-> line_annotation_forclass.propdef}
288 !toplevel| {super} superclass {-> superclass.propdef}
290 annotation_withend~nonull {-> annotations?}
291 = {oneliner} kwis many_annotations {-> many_annotations.annotations}
292 | {more} kwis n1 line_annotations kwend {-> line_annotations.annotations}
293 !nonull | {null} {-> Null}
295 annotation_noend {-> annotations}
296 = {oneliner} kwis many_annotations {-> many_annotations.annotations}
297 | {more} kwis n1 line_annotations {-> line_annotations.annotations}
301 = {public} {-> New visibility.public(Null)}
302 | {public2} kwpublic no {-> New visibility.public(kwpublic)}
303 | {private} kwprivate no {-> New visibility.private(kwprivate)}
304 | {protected} kwprotected no {-> New visibility.protected(kwprotected)}
305 | {intrude} kwintrude no {-> New visibility.intrude(kwintrude)}
308 methid~noid {-> methid}
309 = {plus} plus {-> New methid.plus(plus)}
310 | {minus} minus {-> New methid.minus(minus)}
311 | {star} star {-> New methid.star(star)}
312 | {starstar} starstar {-> New methid.starstar(starstar)}
313 | {slash} slash {-> New methid.slash(slash)}
314 | {percent} percent {-> New methid.percent(percent)}
315 | {eq} eq {-> New methid.eq(eq)}
316 | {ne} ne {-> New methid.ne(ne)}
317 | {le} le {-> New methid.le(le)}
318 | {ge} ge {-> New methid.ge(ge)}
319 | {lt} lt {-> New methid.lt(lt)}
320 | {gt} gt {-> New methid.gt(gt)}
321 | {ll} ll {-> New methid.ll(ll)}
322 | {gg} gg {-> New methid.gg(gg)}
323 | {bra} obra cbra {-> New methid.bra(obra, cbra)}
324 | {starship} starship {-> New methid.starship(starship)}
325 | {assign} id assign {-> New methid.assign(id, assign)}
326 | {braassign} obra cbra assign {-> New methid.braassign(obra, cbra, assign)}
327 !noid | {id} id {-> New methid.id(id)}
330 signature {-> signature}
331 = opar no params cpar typing [no2]:no {-> New signature(opar, [params.param], cpar, typing.type)}
332 | {noret} opar no params cpar [no2]:no {-> New signature(opar, [params.param], cpar, Null)}
333 | {nopar} typing no {-> New signature(Null, [], Null, typing.type)}
334 | {noparnoret} no {-> New signature(Null, [], Null, Null)}
338 = param params_tail* [n2]:no {-> [param, params_tail.param] }
341 params_tail {-> param}
342 = comma no param {-> param};
344 = {untyped} id annotations_o {-> New param(id, Null, Null, annotations_o.annotations)}
345 | id annotations? typing dotdotdot? {-> New param(id, typing.type, dotdotdot, annotations)}
348 extern_calls {-> extern_calls?}
349 = kwimport no extern_call extern_call_tail* {-> New extern_calls( kwimport, [extern_call, extern_call_tail.extern_call] )}
352 extern_call_tail {-> extern_call}
353 = comma no extern_call {-> extern_call};
354 extern_call {-> extern_call}
355 = {prop} extern_call_prop {-> extern_call_prop.extern_call}
356 | {cast} extern_call_cast {-> extern_call_cast.extern_call}
357 | {super} kwsuper {-> New extern_call.super( kwsuper )}
359 extern_call_prop {-> extern_call}
360 = {local} qmethid {-> New extern_call.local_prop( qmethid.methid )}
361 | {full} type dot qmethid {-> New extern_call.full_prop( type, dot, qmethid.methid )}
362 | {init} type {-> New extern_call.init_prop( type )}
364 extern_call_cast {-> extern_call}
365 = {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)}
366 | {as_cast2}[from_type]:type dot kwas [n2]:no [to_type]:type {-> New extern_call.cast_as(from_type, dot, kwas, to_type)}
367 | {as_nullable} type dot kwas [n2]:no opar [n3]:no kwnullable [n4]:no cpar {-> New extern_call.as_nullable( type, kwas, kwnullable)}
368 | {as_nullable2}type dot kwas [n2]:no kwnullable {-> New extern_call.as_nullable( type, kwas, kwnullable)}
369 | {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)}
370 | {as_not_nullable2}type dot kwas [n2]:no kwnot [n3]:no kwnullable {-> New extern_call.as_not_nullable( type, kwas, kwnot, kwnullable)}
373 string_o {->string?} = string? {-> string};
375 in_language = kwin no string [n1]:no {-> New in_language(kwin, string)};
376 extern_code_block = in_language? extern_code_segment;
377 extern_code_block_o {-> extern_code_block?}
378 = extern_code_block {-> extern_code_block}
381 extern_code_body {-> extern_code_block} = no extern_code_block {-> extern_code_block};
383 /* TYPES *********************************************************************/
384 type~nobra~nopar {-> type}
385 = {simple} kwnullable? classid annotations_o~nopar {-> New type(kwnullable, classid, [], annotations_o~nopar.annotations)}
386 !nobra | {generic} kwnullable? classid obra no types [n2]:no cbra annotations_o~nopar {-> New type(kwnullable, classid, [types.type], annotations_o~nopar.annotations)}
389 = type types_tail* {-> [type, types_tail.type]};
391 = comma no type {-> type};
393 = column no type {-> type};
395 = column no type {-> type}
399 /* STATMENTS *****************************************************************/
400 stmtso~withelse~withend {-> expr?}
401 = {block} n stmtsnend {-> stmtsnend.expr}
402 | {emptyblock} n kwend {-> New expr.block([], kwend)}
403 | {emptyoneline} kwend {-> New expr.block([], kwend)}
404 !withend| {oneline} stmt~withelse {-> stmt~withelse.expr}
407 = stmt stmts_tail* {-> New expr.block([stmt.expr, stmts_tail.expr], Null)};
409 = stmt stmts_tail* n {-> New expr.block([stmt.expr, stmts_tail.expr], Null)};
411 = stmt stmts_tail* n kwend {-> New expr.block([stmt.expr, stmts_tail.expr], kwend)};
413 = n stmt {-> stmt.expr};
414 stmt~withelse~noexpr~nopar {-> expr}
415 = {vardecl} vardecl {-> vardecl.expr}
416 | {assign} assignment~nopar {-> assignment~nopar.expr}
417 | {return} kwreturn expr? {-> New expr.return(kwreturn, expr)}
418 | {break} kwbreak label? {-> New expr.break(kwbreak, label)}
419 | {abort} kwabort {-> New expr.abort(kwabort)}
420 | {continue} kwcontinue label? {-> New expr.continue(kwcontinue, label)}
421 | {do} do~withelse {-> do~withelse.expr}
422 !noexpr | {if} if~withelse {-> if~withelse.expr}
423 | {while} while~withelse {-> while~withelse.expr}
424 | {loop} loop~withelse {-> loop~withelse.expr}
425 | {for} for~withelse {-> for~withelse.expr}
426 | {with} with~withelse {-> with~withelse.expr}
427 | {assert} assert~withelse {-> assert~withelse.expr}
428 !noexpr | {call} recv qid args_nopar {-> New expr.call(recv.expr, qid.id, args_nopar.exprs)}
429 !noexpr | {super} qualified_o kwsuper args_nopar {-> New expr.super(qualified_o.qualified, kwsuper, args_nopar.exprs)}
430 !noexpr | {init} recv qualified? kwinit args_nopar {-> New expr.init(recv.expr, kwinit, args_nopar.exprs)}
431 | {debug_type_is} kwdebug kwtype type column expr {-> New expr.debug_type(kwdebug, kwtype, expr.expr, type) }
437 = kwvar id annotations? typing_o {-> New expr.vardecl(kwvar, id, typing_o.type, Null, Null, annotations)}
438 | {assign} kwvar id annotations? typing_o assign no expr {-> New expr.vardecl(kwvar, id, typing_o.type, assign, expr.expr, annotations)}
441 assignment~nopar {-> expr}
442 = {attr} recv~nopar qualified_o attrid assign expr {-> New expr.attr_assign(recv~nopar.expr, attrid, assign, expr)}
443 | {call} recv~nopar qid args assign expr {-> New expr.call_assign(recv~nopar.expr, qid.id, args.exprs, assign, expr)}
444 | {bra} expr_atom~nopar braargs assign expr {-> New expr.bra_assign(expr_atom~nopar.expr, braargs.exprs, assign, expr)}
445 | {attr_re} recv~nopar qualified_o attrid assign_op expr {-> New expr.attr_reassign(recv~nopar.expr, attrid, assign_op, expr)}
446 | {call_re} recv~nopar qid args assign_op expr {-> New expr.call_reassign(recv~nopar.expr, qid.id, args.exprs, assign_op, expr)}
447 | {bra_re} expr_atom~nopar braargs assign_op expr {-> New expr.bra_reassign(expr_atom~nopar.expr, braargs.exprs, assign_op, expr)}
454 | {percent} percenteq
455 | {starstar} starstareq
460 do~withelse {-> expr}
461 = kwdo stmtso_withend label {-> New expr.do(kwdo, stmtso_withend.expr, label)}
462 | {nolabel} kwdo stmtso~withelse {-> New expr.do(kwdo, stmtso~withelse.expr, Null)}
465 if~withelse {-> expr}
466 = {onelineelse} kwif no expr [n2]:no kwthen stmt_withelse kwelse stmtso~withelse {-> New expr.if(kwif, expr, stmt_withelse.expr, stmtso~withelse.expr)}
467 !withelse | {oneline} kwif no expr [n2]:no kwthen stmt {-> New expr.if(kwif, expr, stmt.expr, Null)}
468 !withelse | {block} kwif no expr [n2]:no kwthen [n3]:n stmtsn elsepartblock {-> New expr.if(kwif, expr, stmtsn.expr, elsepartblock.expr)}
469 !withelse | {emptyblock} kwif no expr [n2]:no kwthen [n3]:n? elsepartblock {-> New expr.if(kwif, expr, Null, elsepartblock.expr)}
471 elsepartblock {-> expr?}
472 = {else} kwelse stmtso {-> stmtso.expr}
473 | {empty} kwend {-> New expr.block([], kwend)}
476 loop~withelse {-> expr}
477 = kwloop stmtso_withend label {-> New expr.loop(kwloop, stmtso_withend.expr, label)}
478 | {nolabel} kwloop stmtso~withelse {-> New expr.loop(kwloop, stmtso~withelse.expr, Null)}
481 while~withelse {-> expr}
482 = kwwhile no expr [n2]:no kwdo stmtso_withend label {-> New expr.while(kwwhile, expr, kwdo, stmtso_withend.expr, label)}
483 | {nolabel} kwwhile no expr [n2]:no kwdo stmtso~withelse {-> New expr.while(kwwhile, expr, kwdo, stmtso~withelse.expr, Null)}
486 for~withelse {-> expr}
487 = 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)}
488 | {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)}
491 with~withelse {-> expr}
492 = kwwith no withexpr [n4]:no kwdo stmtso_withend label {-> New expr.with(kwwith, withexpr.expr, kwdo, stmtso_withend.expr, label)}
493 | {nolabel} kwwith no withexpr [n4]:no kwdo stmtso~withelse {-> New expr.with(kwwith, withexpr.expr, kwdo, stmtso~withelse.expr, Null)}
497 = {assign} id annotations? typing_o assign no expr {-> New expr.vardecl(Null, id, typing_o.type, assign, expr.expr, annotations)}
501 assert~withelse {-> expr}
502 = {else} kwassert assertid? expr kwelse stmtso~withelse {-> New expr.assert(kwassert, assertid.id, expr, stmtso~withelse.expr)}
503 !withelse| {noelse} kwassert assertid? expr {-> New expr.assert(kwassert, assertid.id, expr, Null)}
508 /* EXPRESSIONS ***************************************************************/
509 expr~nopar~nobra {-> expr}
510 = expr_and~nopar~nobra {-> expr_and~nopar~nobra.expr}
511 | {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)}
514 expr_and~nopar~nobra {-> expr}
515 = expr_not~nopar~nobra {-> expr_not~nopar~nobra.expr}
516 | {:or} expr_and~nopar~nobra kwor :no expr_not~nopar~nobra
517 | {:and} expr_and~nopar~nobra kwand :no expr_not~nopar~nobra
518 | {:or_else} expr_and~nopar~nobra kwor kwelse :no expr_not~nopar~nobra
519 | {:implies} expr_and~nopar~nobra kwimplies :no expr_not~nopar~nobra
522 expr_not~nopar~nobra {-> expr}
523 = expr_eq~nopar~nobra {-> expr_eq~nopar~nobra.expr}
524 | {not} kwnot no expr_not~nopar~nobra {-> New expr.not(kwnot, expr_not~nopar~nobra.expr)}
527 expr_eq~nopar~nobra {-> expr}
528 = expr_add~nopar~nobra {-> expr_add~nopar~nobra.expr}
529 | {:eq} expr_add~nopar~nobra eq :no [expr2]:expr_add~nopar~nobra
530 | {:ne} expr_add~nopar~nobra ne :no [expr2]:expr_add~nopar~nobra
531 | {:lt} expr_add~nopar~nobra lt :no [expr2]:expr_add~nopar~nobra
532 | {:le} expr_add~nopar~nobra le :no [expr2]:expr_add~nopar~nobra
533 | {:ll} expr_eq~nopar~nobra ll :no [expr2]:expr_add~nopar~nobra
534 | {:gt} expr_add~nopar~nobra gt :no [expr2]:expr_add~nopar~nobra
535 | {:ge} expr_add~nopar~nobra ge :no [expr2]:expr_add~nopar~nobra
536 | {:gg} expr_eq~nopar~nobra gg :no [expr2]:expr_add~nopar~nobra
537 | {:starship} expr_add~nopar~nobra starship :no [expr2]:expr_add~nopar~nobra
538 | {:isa} expr_add~nopar~nobra kwisa :no type~nobra
541 expr_add~nopar~nobra {-> expr}
542 = expr_mul~nopar~nobra {-> expr_mul~nopar~nobra.expr}
543 | {:plus} expr_add~nopar~nobra plus :no [expr2]:expr_mul~nopar~nobra
544 | {:minus} expr_add~nopar~nobra minus :no [expr2]:expr_mul~nopar~nobra
547 expr_mul~nopar~nobra {-> expr}
548 = expr_pow~nopar~nobra {-> expr_pow~nopar~nobra.expr}
549 | {:star} expr_mul~nopar~nobra star :no [expr2]:expr_pow~nopar~nobra
550 | {:slash} expr_mul~nopar~nobra slash :no [expr2]:expr_pow~nopar~nobra
551 | {:percent} expr_mul~nopar~nobra percent :no [expr2]:expr_pow~nopar~nobra
554 expr_pow~nopar~nobra {-> expr}
555 = expr_minus~nopar~nobra {-> expr_minus~nopar~nobra.expr}
556 | {:starstar} expr_minus~nopar~nobra starstar :no [expr2]:expr_pow~nopar~nobra
559 expr_minus~nopar~nobra {-> expr}
560 = expr_new~nopar~nobra {-> expr_new~nopar~nobra.expr}
561 | {:uminus} minus expr_minus~nobra
562 | {:uplus} plus expr_minus~nobra
563 | {:once} kwonce :no expr_minus~nobra
566 expr_new~nopar~nobra {-> expr}
567 = expr_atom~nopar~nobra {-> expr_atom~nopar~nobra.expr}
568 | {new} kwnew no type~nobra_nopar args {-> New expr.new(kwnew, type~nobra_nopar.type, Null, args.exprs)}
569 | {isset_attr} kwisset recv~nopar~nobra qualified_o attrid {-> New expr.isset_attr(kwisset, recv~nopar~nobra.expr, attrid)}
572 expr_atom~nopar~nobra {-> expr}
573 = expr_single~nopar~nobra {-> expr_single~nopar~nobra.expr}
574 | {attr} recv~nopar~nobra qualified_o attrid {-> New expr.attr(recv~nopar~nobra.expr, attrid)}
575 | {call} recv~nopar~nobra qid args {-> New expr.call(recv~nopar~nobra.expr, qid.id, args.exprs)}
576 | {super} qualified_o kwsuper args {-> New expr.super(qualified_o.qualified, kwsuper, args.exprs)}
577 | {init} recv~nopar~nobra kwinit args {-> New expr.init(recv~nopar~nobra.expr, kwinit, args.exprs)}
578 !nobra | {bra} expr_atom~nopar braargs {-> New expr.bra(expr_atom~nopar.expr, braargs.exprs)}
579 | {new} kwnew no type~nobra_nopar dot [n2]:no qid args {-> New expr.new(kwnew, type~nobra_nopar.type, qid.id, args.exprs)}
580 | {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)}
581 | {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)}
582 | {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)}
583 | {vararg} [expr]:expr_atom~nopar~nobra dotdotdot {-> New expr.vararg(expr.expr, dotdotdot)}
586 expr_single~nopar~nobra {-> expr}
587 = {self} kwself annotations_o {-> New expr.self(kwself, annotations_o.annotations)}
588 | {true} kwtrue annotations_o {-> New expr.true(kwtrue, annotations_o.annotations)}
589 | {false} kwfalse annotations_o {-> New expr.false(kwfalse, annotations_o.annotations)}
590 | {null} kwnull annotations_o {-> New expr.null(kwnull, annotations_o.annotations)}
591 | {int} number annotations_o {-> New expr.dec_int(number, annotations_o.annotations)}
592 | {hex_int} hex_number annotations_o {-> New expr.hex_int(hex_number, annotations_o.annotations)}
593 | {float} float annotations_o {-> New expr.float(float, annotations_o.annotations)}
594 | {char} char annotations_o {-> New expr.char(char, annotations_o.annotations)}
595 | {string} string annotations_o {-> New expr.string(string, annotations_o.annotations)}
596 | {superstring} superstring {-> superstring.expr}
597 !nopar | {par} expr_par {-> expr_par.expr}
598 // !nopar to unambiguise 'foo[5].bar' between '(foo[5]).bar' and 'foo([5].bar),
599 !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)}
600 !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)}
601 !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)}
605 = {par} opar no any_expr [n2]:no cpar annotations_o {-> New expr.par(opar, any_expr.expr, cpar, annotations_o.annotations)}
606 | {tuple} opar no many_expr [n2]:no cpar annotations_o {-> New expr.par(opar, many_expr.expr, cpar, annotations_o.annotations)}
610 = any_expr many_expr_tail+ {-> New expr.many([any_expr.expr, many_expr_tail.expr])}
613 many_expr_tail {->expr}
614 = comma no any_expr {-> any_expr.expr}
617 array_items {-> expr*}
618 = array_item array_items_tail* {-> [array_item.expr, array_items_tail.expr]}
620 array_items_tail {-> expr}
621 = comma no array_item {-> array_item.expr}
625 | {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)}
626 | {if} kwif [n1]:no expr [n2]:no kwthen [n3]:no [then]:array_item {-> New expr.if(kwif, expr, then.expr, Null)}
629 superstring {-> expr}
630 = superstring_start superstring_middle* superstring_end annotations_o {-> New expr.superstring([superstring_start.expr, superstring_middle.expr, superstring_end.expr], annotations_o.annotations)};
631 superstring_start {-> expr*}
632 = start_string_p no expr [n2]:no {-> [start_string_p.expr, expr]}
633 | {noexpr} start_string_p no {-> [start_string_p.expr]}
635 start_string_p {-> expr}
636 = start_string {-> New expr.start_string(start_string)};
637 superstring_middle {-> expr*}
638 = mid_string_p no expr [n2]:no {-> [mid_string_p.expr, expr]}
639 | {noexpr} mid_string_p no {-> [mid_string_p.expr]}
641 mid_string_p {-> expr}
642 = mid_string {-> New expr.mid_string(mid_string)};
643 superstring_end {-> expr}
644 = end_string {-> New expr.end_string(end_string)};
646 /* ANNOTATIONS *******************************************************************/
648 annotations~nopar {-> annotations}
649 = {one} at one_annotation~nopar {-> New annotations(at, Null, [one_annotation~nopar.annotation], Null)}
650 | {many} at opar no annotation_list [n2]:no cpar {-> New annotations(at, opar, [annotation_list.annotation], cpar)}
652 annotations_o~nopar {-> annotations?}
653 = annotations~nopar {-> annotations~nopar.annotations}
657 one_annotation~nopar {-> annotation}
658 = {alone} redef visibility atid annotations_o~nopar {-> New annotation(Null, redef.kwredef, visibility, atid, Null, [], Null, annotations_o~nopar.annotations)}
659 // !nopar to unambiguise 'new T@foo(bar)' between 'new T@(foo(bar))' and 'new (T@foo)(bar)'
660 !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)}
663 many_annotations {-> annotations}
664 = {many} annotation_list {-> New annotations(Null, Null, [annotation_list.annotation], Null)}
667 annotation_list {-> annotation*}
668 = {many} one_annotation_list annotations_tail* {-> [one_annotation_list.annotation, annotations_tail.annotation] }
671 one_annotation_list~nopar {-> annotation}
672 = {alone} redef visibility atid annotations_o~nopar {-> New annotation(Null, redef.kwredef, visibility, atid, Null, [], Null, annotations_o~nopar.annotations)}
673 // !nopar to unambiguise 'new T@foo(bar)' between 'new T@(foo(bar))' and 'new (T@foo)(bar)'
674 !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)}
675 !nopar | {nopar} redef visibility atid at_arg_single {-> New annotation(Null, redef.kwredef, visibility, atid, Null, [at_arg_single.expr], Null, Null)}
677 at_arg_single {-> expr}
678 // FIXME: why expr_single but not expr_atom is not clear :(
679 = {expr} [expr]:expr_single_nopar {-> expr.expr}
682 annotations_tail {-> annotation}
683 = comma no one_annotation_list {-> one_annotation_list.annotation}
686 line_annotations {-> annotations}
687 = line_annotation+ {-> New annotations(Null, Null, [line_annotation.annotation], Null) }
689 line_annotation {-> annotation}
690 = [doc]:no redef visibility atid annotations? n1 {-> New annotation(doc.doc, redef.kwredef, visibility, atid.atid, Null, [], Null, annotations)}
691 | {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)}
692 | {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)}
694 line_annotation_forclass {-> propdef}
695 = [doc]:no atid_forclass annotations? {-> New propdef.annot(doc.doc, Null, Null, atid_forclass.atid, Null, [], Null, annotations)}
696 | {args} [doc]:no atid_forclass opar no at_args cpar annotations? {-> New propdef.annot(doc.doc, Null, Null, atid_forclass.atid, opar, [at_args.expr], cpar, annotations)}
697 | {nopar} [doc]:no atid_forclass at_args_nopar {-> New propdef.annot(doc.doc, Null, Null, atid_forclass.atid, Null, [at_args_nopar.expr], Null, Null)}
700 at_args~nopar {-> expr* }
701 = {many} any_expr~nopar at_args_tail* {-> [any_expr~nopar.expr, at_args_tail.expr]}
704 at_args_tail {-> expr}
705 = comma no any_expr {-> any_expr.expr}
708 any_expr~nopar {-> expr}
709 = {type} type {-> New expr.type(type)}
710 | {expr} expr~nopar {-> expr~nopar.expr}
711 | {stmt} stmt_noexpr~nopar {-> stmt_noexpr~nopar.expr}
712 | {methid} recv~nopar qmethid_noid {-> New expr.methid(recv~nopar.expr, qmethid_noid.methid)}
713 !nopar | {at} annotations {-> New expr.at(annotations.annotations)}
716 atid~forclass {-> atid}
717 = {id} id {-> New atid.id(id)}
718 !forclass | {kwextern} kwextern {-> New atid.kwextern(kwextern)}
719 // | {kwimport} kwimport {-> New atid.kwimport(kwimport)}
720 | {kwabstract} kwabstract {-> New atid.kwabstract(kwabstract)}
723 /* MISC **********************************************************************/
725 recv~nopar~nobra {-> expr}
726 = expr_atom~nopar~nobra dot no {-> expr_atom~nopar~nobra.expr}
727 | {implicit} {-> New expr.implicit_self()}
731 = args_n {-> args_n.exprs}
732 | {empty} {-> New exprs.list([])}
735 = opar no expr_list cpar {-> New exprs.par(opar, [expr_list.expr], cpar) }
736 | {emptypar} opar no cpar {-> New exprs.par(opar, [], cpar) }
738 args_nopar {-> exprs}
739 = opar no expr_list cpar {-> New exprs.par(opar, [expr_list.expr], cpar) }
740 | {onearg} expr_nopar {-> New exprs.list([expr_nopar.expr])}
741 | {emptypar} opar no cpar {-> New exprs.par(opar, [], cpar) }
742 | {empty} {-> New exprs.list([])}
745 = obra no expr_list cbra {-> New exprs.bra(obra, [expr_list.expr], cbra)};
747 = expr_list {-> New exprs.list([expr_list.expr])};
749 = expr [n2]:no expr_tail* {-> [expr, expr_tail.expr]};
751 = comma no expr [n2]:no {-> expr};
753 = opar no idlist_nopar [n2]:no cpar {-> [idlist_nopar.id]}
754 | {nopar} idlist_nopar {-> [idlist_nopar.id]}
756 idlist_nopar {-> id*}
757 = {single} id {-> [id]}
758 | {more} idlist_nopar comma [n2]:no id {-> [idlist_nopar.id, id]}
761 module_name {-> module_name}
762 = {mod} modquad* id {-> New module_name(Null, [modquad.id], id)}
763 | {root} quad no modquad* id {-> New module_name(quad, [modquad.id], id)}
767 = {cla} modquad* classquad {-> New qualified([modquad.id], classquad.classid)}
768 | {mod} modquad+ {-> New qualified([modquad.id], Null)}
770 qualified_o {-> qualified?}
771 = qualified {-> qualified}
775 = qualified? id {-> id}
777 qclassid {-> classid}
778 = qualified? classid {-> classid}
780 qmethid~noid {-> methid}
781 = qualified? methid~noid {-> methid~noid.methid}
784 = id quad no {-> id};
785 classquad {-> classid}
786 = classid quad no {-> classid};
792 n1 = {a} comment | {b} eol;
794 = {a} n2? comment+ {-> New doc([comment])}
803 = {a} n2? comment+ eol+
807 /*****************************************************************************/
809 /*****************************************************************************/
811 module = moduledecl? [imports]:import* [extern_code_blocks]:extern_code_block* [classdefs]:classdef*;
814 = doc? kwredef? visibility kwmodule [name]:module_name annotations?;
816 import = {std} visibility kwimport [name]:module_name annotations?
817 | {no} visibility kwimport kwend
822 | {private} kwprivate
823 | {protected} kwprotected
824 | {intrude} kwintrude
827 classdef= {std} doc? kwredef? visibility classkind [id]:classid? [formaldefs]:formaldef* extern_code_block? [propdefs]:propdef* kwend
828 | {top} [propdefs]:propdef*
829 | {main} [propdefs]:propdef*
833 | {abstract} kwabstract kwclass
834 | {interface} kwinterface
836 | {extern} kwextern kwclass?
838 formaldef = [id]:classid type? annotations?;
841 propdef = {attr} doc? kwredef? visibility kwvar [id2]:id type? expr? annotations? [block]:expr?
842 | {main_meth} kwredef? [block]:expr?
843 | {type} doc? kwredef? visibility kwtype [id]:classid type annotations?
844 | {meth} doc? kwredef? visibility kwmeth? kwinit? kwnew? methid? signature annotations? extern_calls? extern_code_block? [block]:expr?
845 | {super} doc? kwredef? visibility kwsuper type annotations?
846 | {annot} doc? kwredef? visibility? atid opar? [args]:expr* cpar? annotations?
849 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;
851 signature = opar? [params]:param* cpar? type?;
853 param = id type? dotdotdot? annotations?
856 type = kwnullable? [id]:classid [types]:type* annotations?;
860 expr = {block} expr* kwend?
861 | {vardecl} kwvar? id type? assign? expr? annotations?
862 | {return} kwreturn? expr?
863 | {break} kwbreak label?
865 | {continue} kwcontinue? label?
866 | {do} kwdo [block]:expr? label?
867 | {if} kwif expr [then]:expr? [else]:expr?
868 | {ifexpr} kwif expr kwthen [then]:expr kwelse [else]:expr
869 | {while} kwwhile expr kwdo [block]:expr? label?
870 | {loop} kwloop [block]:expr? label?
871 | {for} kwfor [ids]:id* expr kwdo [block]:expr? label?
872 | {with} kwwith expr kwdo [block]:expr? label?
873 | {assert} kwassert id? expr [else]:expr?
876 | {binop} expr [expr2]:expr
877 | {or} expr [op]:kwor [expr2]:expr
878 | {and} expr [op]:kwand [expr2]:expr
879 | {or_else} expr [op]:kwor kwelse [expr2]:expr
880 | {implies} expr [op]:kwimplies [expr2]:expr
882 | {eq} expr [op]:eq [expr2]:expr
883 | {ne} expr [op]:ne [expr2]:expr
884 | {lt} expr [op]:lt [expr2]:expr
885 | {le} expr [op]:le [expr2]:expr
886 | {ll} expr [op]:ll [expr2]:expr
887 | {gt} expr [op]:gt [expr2]:expr
888 | {ge} expr [op]:ge [expr2]:expr
889 | {gg} expr [op]:gg [expr2]:expr
890 | {isa} expr kwisa type
891 | {plus} expr [op]:plus [expr2]:expr
892 | {minus} expr [op]:minus [expr2]:expr
893 | {starship} expr [op]:starship [expr2]:expr
894 | {star} expr [op]:star [expr2]:expr
895 | {starstar} expr [op]:starstar [expr2]:expr
896 | {slash} expr [op]:slash [expr2]:expr
897 | {percent} expr [op]:percent [expr2]:expr
898 | {uminus} minus expr
900 | {new} kwnew type id? [args]:exprs
901 | {attr} expr [id]:attrid
902 | {attr_assign} expr [id]:attrid assign [value]:expr
903 | {attr_reassign} expr [id]:attrid assign_op [value]:expr
904 | {call} expr id [args]:exprs
905 | {call_assign} expr id [args]:exprs assign [value]:expr
906 | {call_reassign} expr id [args]:exprs assign_op [value]:expr
907 | {super} qualified? kwsuper [args]:exprs
908 | {init} expr kwinit [args]:exprs
909 | {bra} expr [args]:exprs
910 | {bra_assign} expr [args]:exprs assign [value]:expr
911 | {bra_reassign} expr [args]:exprs assign_op [value]:expr
913 | {var_assign} id assign [value]:expr
914 | {var_reassign} id assign_op [value]:expr
915 | {range} expr [expr2]:expr annotations?
916 | {crange} obra expr [expr2]:expr cbra annotations?
917 | {orange} obra expr [expr2]:expr [cbra]:obra annotations?
918 | {array} obra [exprs]:expr* type? cbra annotations?
919 | {self} kwself annotations?
921 | {true} kwtrue annotations?
922 | {false} kwfalse annotations?
923 | {null} kwnull annotations?
924 | {dec_int} number annotations?
925 | {hex_int} hex_number annotations?
926 | {float} float annotations?
927 | {char} char annotations?
928 | {string} string annotations?
929 | {start_string} [string]:start_string
930 | {mid_string} [string]:mid_string
931 | {end_string} [string]:end_string
932 | {superstring} [exprs]:expr* annotations?
933 | {par} opar expr cpar annotations?
934 | {as_cast} expr kwas opar? type cpar?
935 | {as_notnull} expr kwas opar? kwnot kwnull cpar?
936 | {isset_attr} kwisset expr [id]:attrid
937 | {debug_type} kwdebug kwtype expr type
938 | {vararg} expr dotdotdot
940 | {methid} expr [id]:methid
942 | {many} [exprs]:expr*
945 = {list} [exprs]:expr*
946 | {par} opar [exprs]:expr* cpar
947 | {bra} obra [exprs]:expr* cbra
951 | {minus}[op]:minuseq
953 | {slash} [op]:slasheq
954 | {percent} [op]:percenteq
955 | {starstar} [op]:starstareq
960 module_name = quad? [path]:id* id;
961 extern_calls = kwimport [extern_calls]:extern_call*
965 | {local_prop} methid
966 | {full_prop} type dot? methid
968 | {cast_as} [from_type]:type dot? kwas [to_type]:type
969 | {as_nullable} type kwas kwnullable
970 | {as_not_nullable} type kwas kwnot kwnullable
972 in_language = kwin string;
973 extern_code_block = in_language? extern_code_segment;
975 qualified = id* classid? ;
979 annotations = at? opar? [items]:annotation* cpar?;
981 annotation = doc? kwredef? visibility? atid opar? [args]:expr* cpar? annotations?;
983 atid = {id} id | {kwextern} [id]:kwextern | {kwabstract} [id]:kwabstract | {kwimport} [id]:kwimport;
985 /*****************************************************************************/