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 | propdef_toplevel n1 {-> New classdef.top([propdef_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 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 {-> propdef*}
261 = propdefn+ no {-> [propdefn.propdef]}
264 propdefn {-> propdef}
265 = propdef n1 {-> propdef.propdef}
267 propdef~toplevel {-> propdef}
268 = {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)}
269 | {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)}
270 !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)}
271 !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)}
272 | {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)}
273 !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)}
274 !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)}
275 !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)}
276 !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)}
277 !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)}
278 !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)}
280 annotation_withend~nonull {-> annotations?}
281 = {oneliner} kwis many_annotations {-> many_annotations.annotations}
282 | {more} kwis n1 line_annotations kwend {-> line_annotations.annotations}
283 !nonull | {null} {-> Null}
285 annotation_noend {-> annotations}
286 = {oneliner} kwis many_annotations {-> many_annotations.annotations}
287 | {more} kwis n1 line_annotations {-> line_annotations.annotations}
291 = {public} {-> New visibility.public(Null)}
292 | {public2} kwpublic no {-> New visibility.public(kwpublic)}
293 | {private} kwprivate no {-> New visibility.private(kwprivate)}
294 | {protected} kwprotected no {-> New visibility.protected(kwprotected)}
295 | {intrude} kwintrude no {-> New visibility.intrude(kwintrude)}
298 methid~noid {-> methid}
299 = {plus} plus {-> New methid.plus(plus)}
300 | {minus} minus {-> New methid.minus(minus)}
301 | {star} star {-> New methid.star(star)}
302 | {starstar} starstar {-> New methid.starstar(starstar)}
303 | {slash} slash {-> New methid.slash(slash)}
304 | {percent} percent {-> New methid.percent(percent)}
305 | {eq} eq {-> New methid.eq(eq)}
306 | {ne} ne {-> New methid.ne(ne)}
307 | {le} le {-> New methid.le(le)}
308 | {ge} ge {-> New methid.ge(ge)}
309 | {lt} lt {-> New methid.lt(lt)}
310 | {gt} gt {-> New methid.gt(gt)}
311 | {ll} ll {-> New methid.ll(ll)}
312 | {gg} gg {-> New methid.gg(gg)}
313 | {bra} obra cbra {-> New methid.bra(obra, cbra)}
314 | {starship} starship {-> New methid.starship(starship)}
315 | {assign} id assign {-> New methid.assign(id, assign)}
316 | {braassign} obra cbra assign {-> New methid.braassign(obra, cbra, assign)}
317 !noid | {id} id {-> New methid.id(id)}
320 signature {-> signature}
321 = opar no params cpar typing [no2]:no {-> New signature(opar, [params.param], cpar, typing.type)}
322 | {noret} opar no params cpar [no2]:no {-> New signature(opar, [params.param], cpar, Null)}
323 | {nopar} typing no {-> New signature(Null, [], Null, typing.type)}
324 | {noparnoret} no {-> New signature(Null, [], Null, Null)}
328 = param params_tail* [n2]:no {-> [param, params_tail.param] }
331 params_tail {-> param}
332 = comma no param {-> param};
334 = {untyped} id annotations_o {-> New param(id, Null, Null, annotations_o.annotations)}
335 | id annotations? typing dotdotdot? {-> New param(id, typing.type, dotdotdot, annotations)}
338 extern_calls {-> extern_calls?}
339 = kwimport no extern_call extern_call_tail* {-> New extern_calls( kwimport, [extern_call, extern_call_tail.extern_call] )}
342 extern_call_tail {-> extern_call}
343 = comma no extern_call {-> extern_call};
344 extern_call {-> extern_call}
345 = {prop} extern_call_prop {-> extern_call_prop.extern_call}
346 | {cast} extern_call_cast {-> extern_call_cast.extern_call}
347 | {super} kwsuper {-> New extern_call.super( kwsuper )}
349 extern_call_prop {-> extern_call}
350 = {local} qmethid {-> New extern_call.local_prop( qmethid.methid )}
351 | {full} type dot qmethid {-> New extern_call.full_prop( type, dot, qmethid.methid )}
352 | {init} type {-> New extern_call.init_prop( type )}
354 extern_call_cast {-> extern_call}
355 = {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)}
356 | {as_cast2}[from_type]:type dot kwas [n2]:no [to_type]:type {-> New extern_call.cast_as(from_type, dot, kwas, to_type)}
357 | {as_nullable} type dot kwas [n2]:no opar [n3]:no kwnullable [n4]:no cpar {-> New extern_call.as_nullable( type, kwas, kwnullable)}
358 | {as_nullable2}type dot kwas [n2]:no kwnullable {-> New extern_call.as_nullable( type, kwas, kwnullable)}
359 | {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)}
360 | {as_not_nullable2}type dot kwas [n2]:no kwnot [n3]:no kwnullable {-> New extern_call.as_not_nullable( type, kwas, kwnot, kwnullable)}
363 string_o {->string?} = string? {-> string};
365 in_language = kwin no string [n1]:no {-> New in_language(kwin, string)};
366 extern_code_block = in_language? extern_code_segment;
367 extern_code_block_o {-> extern_code_block?}
368 = extern_code_block {-> extern_code_block}
371 extern_code_body {-> extern_code_block} = no extern_code_block {-> extern_code_block};
373 /* TYPES *********************************************************************/
374 type~nobra~nopar {-> type}
375 = {simple} kwnullable? classid annotations_o~nopar {-> New type(kwnullable, classid, [], annotations_o~nopar.annotations)}
376 !nobra | {generic} kwnullable? classid obra no types [n2]:no cbra annotations_o~nopar {-> New type(kwnullable, classid, [types.type], annotations_o~nopar.annotations)}
379 = type types_tail* {-> [type, types_tail.type]};
381 = comma no type {-> type};
383 = column no type {-> type};
385 = column no type {-> type}
389 /* STATMENTS *****************************************************************/
390 stmtso~withelse~withend {-> expr?}
391 = {block} n stmtsnend {-> stmtsnend.expr}
392 | {emptyblock} n kwend {-> New expr.block([], kwend)}
393 | {emptyoneline} kwend {-> New expr.block([], kwend)}
394 !withend| {oneline} stmt~withelse {-> stmt~withelse.expr}
397 = stmt stmts_tail* {-> New expr.block([stmt.expr, stmts_tail.expr], Null)};
399 = stmt stmts_tail* n {-> New expr.block([stmt.expr, stmts_tail.expr], Null)};
401 = stmt stmts_tail* n kwend {-> New expr.block([stmt.expr, stmts_tail.expr], kwend)};
403 = n stmt {-> stmt.expr};
404 stmt~withelse~noexpr~nopar {-> expr}
405 = {vardecl} vardecl {-> vardecl.expr}
406 | {assign} assignment~nopar {-> assignment~nopar.expr}
407 | {return} kwreturn expr? {-> New expr.return(kwreturn, expr)}
408 | {break} kwbreak label? {-> New expr.break(kwbreak, label)}
409 | {abort} kwabort {-> New expr.abort(kwabort)}
410 | {continue} kwcontinue label? {-> New expr.continue(kwcontinue, label)}
411 | {do} do~withelse {-> do~withelse.expr}
412 !noexpr | {if} if~withelse {-> if~withelse.expr}
413 | {while} while~withelse {-> while~withelse.expr}
414 | {loop} loop~withelse {-> loop~withelse.expr}
415 | {for} for~withelse {-> for~withelse.expr}
416 | {assert} assert~withelse {-> assert~withelse.expr}
417 !noexpr | {call} recv qid args_nopar {-> New expr.call(recv.expr, qid.id, args_nopar.exprs)}
418 !noexpr | {super} qualified_o kwsuper args_nopar {-> New expr.super(qualified_o.qualified, kwsuper, args_nopar.exprs)}
419 !noexpr | {init} recv qualified? kwinit args_nopar {-> New expr.init(recv.expr, kwinit, args_nopar.exprs)}
420 | {debug_type_is} kwdebug kwtype type column expr {-> New expr.debug_type(kwdebug, kwtype, expr.expr, type) }
426 = kwvar id annotations? typing_o {-> New expr.vardecl(kwvar, id, typing_o.type, Null, Null, annotations)}
427 | {assign} kwvar id annotations? typing_o assign no expr {-> New expr.vardecl(kwvar, id, typing_o.type, assign, expr.expr, annotations)}
430 assignment~nopar {-> expr}
431 = {attr} recv~nopar qualified_o attrid assign expr {-> New expr.attr_assign(recv~nopar.expr, attrid, assign, expr)}
432 | {call} recv~nopar qid args assign expr {-> New expr.call_assign(recv~nopar.expr, qid.id, args.exprs, assign, expr)}
433 | {bra} expr_atom~nopar braargs assign expr {-> New expr.bra_assign(expr_atom~nopar.expr, braargs.exprs, assign, expr)}
434 | {attr_re} recv~nopar qualified_o attrid assign_op expr {-> New expr.attr_reassign(recv~nopar.expr, attrid, assign_op, expr)}
435 | {call_re} recv~nopar qid args assign_op expr {-> New expr.call_reassign(recv~nopar.expr, qid.id, args.exprs, assign_op, expr)}
436 | {bra_re} expr_atom~nopar braargs assign_op expr {-> New expr.bra_reassign(expr_atom~nopar.expr, braargs.exprs, assign_op, expr)}
443 do~withelse {-> expr}
444 = kwdo stmtso_withend label {-> New expr.do(kwdo, stmtso_withend.expr, label)}
445 | {nolabel} kwdo stmtso~withelse {-> New expr.do(kwdo, stmtso~withelse.expr, Null)}
448 if~withelse {-> expr}
449 = {onelineelse} kwif no expr [n2]:no kwthen stmt_withelse kwelse stmtso~withelse {-> New expr.if(kwif, expr, stmt_withelse.expr, stmtso~withelse.expr)}
450 !withelse | {oneline} kwif no expr [n2]:no kwthen stmt {-> New expr.if(kwif, expr, stmt.expr, Null)}
451 !withelse | {block} kwif no expr [n2]:no kwthen [n3]:n stmtsn elsepartblock {-> New expr.if(kwif, expr, stmtsn.expr, elsepartblock.expr)}
452 !withelse | {emptyblock} kwif no expr [n2]:no kwthen [n3]:n? elsepartblock {-> New expr.if(kwif, expr, Null, elsepartblock.expr)}
454 elsepartblock {-> expr?}
455 = {else} kwelse stmtso {-> stmtso.expr}
456 | {empty} kwend {-> New expr.block([], kwend)}
459 loop~withelse {-> expr}
460 = kwloop stmtso_withend label {-> New expr.loop(kwloop, stmtso_withend.expr, label)}
461 | {nolabel} kwloop stmtso~withelse {-> New expr.loop(kwloop, stmtso~withelse.expr, Null)}
464 while~withelse {-> expr}
465 = kwwhile no expr [n2]:no kwdo stmtso_withend label {-> New expr.while(kwwhile, expr, kwdo, stmtso_withend.expr, label)}
466 | {nolabel} kwwhile no expr [n2]:no kwdo stmtso~withelse {-> New expr.while(kwwhile, expr, kwdo, stmtso~withelse.expr, Null)}
469 for~withelse {-> expr}
470 = 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)}
471 | {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)}
474 assert~withelse {-> expr}
475 = {else} kwassert assertid? expr kwelse stmtso~withelse {-> New expr.assert(kwassert, assertid.id, expr, stmtso~withelse.expr)}
476 !withelse| {noelse} kwassert assertid? expr {-> New expr.assert(kwassert, assertid.id, expr, Null)}
481 /* EXPRESSIONS ***************************************************************/
482 expr~nopar~nobra {-> expr}
483 = expr_and~nopar~nobra {-> expr_and~nopar~nobra.expr}
484 | {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)}
487 expr_and~nopar~nobra {-> expr}
488 = expr_not~nopar~nobra {-> expr_not~nopar~nobra.expr}
489 | {:or} expr_and~nopar~nobra :kwor :no expr_not~nopar~nobra
490 | {:and} expr_and~nopar~nobra :kwand :no expr_not~nopar~nobra
491 | {:or_else} expr_and~nopar~nobra :kwor :kwelse :no expr_not~nopar~nobra
492 | {:implies} expr_and~nopar~nobra :kwimplies :no expr_not~nopar~nobra
495 expr_not~nopar~nobra {-> expr}
496 = expr_eq~nopar~nobra {-> expr_eq~nopar~nobra.expr}
497 | {not} kwnot no expr_not~nopar~nobra {-> New expr.not(kwnot, expr_not~nopar~nobra.expr)}
500 expr_eq~nopar~nobra {-> expr}
501 = expr_add~nopar~nobra {-> expr_add~nopar~nobra.expr}
502 | {:eq} expr_add~nopar~nobra :eq :no [expr2]:expr_add~nopar~nobra
503 | {:ne} expr_add~nopar~nobra :ne :no [expr2]:expr_add~nopar~nobra
504 | {:lt} expr_add~nopar~nobra :lt :no [expr2]:expr_add~nopar~nobra
505 | {:le} expr_add~nopar~nobra :le :no [expr2]:expr_add~nopar~nobra
506 | {:ll} expr_eq~nopar~nobra :ll :no [expr2]:expr_add~nopar~nobra
507 | {:gt} expr_add~nopar~nobra :gt :no [expr2]:expr_add~nopar~nobra
508 | {:ge} expr_add~nopar~nobra :ge :no [expr2]:expr_add~nopar~nobra
509 | {:gg} expr_eq~nopar~nobra :gg :no [expr2]:expr_add~nopar~nobra
510 | {:starship} expr_add~nopar~nobra :starship :no [expr2]:expr_add~nopar~nobra
511 | {:isa} expr_add~nopar~nobra :kwisa :no type~nobra
514 expr_add~nopar~nobra {-> expr}
515 = expr_mul~nopar~nobra {-> expr_mul~nopar~nobra.expr}
516 | {:plus} expr_add~nopar~nobra :plus :no [expr2]:expr_mul~nopar~nobra
517 | {:minus} expr_add~nopar~nobra :minus :no [expr2]:expr_mul~nopar~nobra
520 expr_mul~nopar~nobra {-> expr}
521 = expr_pow~nopar~nobra {-> expr_pow~nopar~nobra.expr}
522 | {:star} expr_mul~nopar~nobra :star :no [expr2]:expr_pow~nopar~nobra
523 | {:slash} expr_mul~nopar~nobra :slash :no [expr2]:expr_pow~nopar~nobra
524 | {:percent} expr_mul~nopar~nobra :percent :no [expr2]:expr_pow~nopar~nobra
527 expr_pow~nopar~nobra {-> expr}
528 = expr_minus~nopar~nobra {-> expr_minus~nopar~nobra.expr}
529 | {:starstar} expr_minus~nopar~nobra :starstar :no [expr2]:expr_pow~nopar~nobra
532 expr_minus~nopar~nobra {-> expr}
533 = expr_new~nopar~nobra {-> expr_new~nopar~nobra.expr}
534 | {:uminus} minus expr_minus~nobra
535 | {:once} kwonce :no expr_minus~nobra
538 expr_new~nopar~nobra {-> expr}
539 = expr_atom~nopar~nobra {-> expr_atom~nopar~nobra.expr}
540 | {new} kwnew no type~nobra_nopar args {-> New expr.new(kwnew, type~nobra_nopar.type, Null, args.exprs)}
541 | {isset_attr} kwisset recv~nopar~nobra qualified_o attrid {-> New expr.isset_attr(kwisset, recv~nopar~nobra.expr, attrid)}
544 expr_atom~nopar~nobra {-> expr}
545 = expr_single~nopar~nobra {-> expr_single~nopar~nobra.expr}
546 | {attr} recv~nopar~nobra qualified_o attrid {-> New expr.attr(recv~nopar~nobra.expr, attrid)}
547 | {call} recv~nopar~nobra qid args {-> New expr.call(recv~nopar~nobra.expr, qid.id, args.exprs)}
548 | {super} qualified_o kwsuper args {-> New expr.super(qualified_o.qualified, kwsuper, args.exprs)}
549 | {init} recv~nopar~nobra kwinit args {-> New expr.init(recv~nopar~nobra.expr, kwinit, args.exprs)}
550 !nobra | {bra} expr_atom~nopar braargs {-> New expr.bra(expr_atom~nopar.expr, braargs.exprs)}
551 | {new} kwnew no type~nobra_nopar dot [n2]:no qid args {-> New expr.new(kwnew, type~nobra_nopar.type, qid.id, args.exprs)}
552 | {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)}
553 | {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)}
554 | {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)}
555 | {vararg} [expr]:expr_atom~nopar~nobra dotdotdot {-> New expr.vararg(expr.expr, dotdotdot)}
558 expr_single~nopar~nobra {-> expr}
559 = {self} kwself annotations_o {-> New expr.self(kwself, annotations_o.annotations)}
560 | {true} kwtrue annotations_o {-> New expr.true(kwtrue, annotations_o.annotations)}
561 | {false} kwfalse annotations_o {-> New expr.false(kwfalse, annotations_o.annotations)}
562 | {null} kwnull annotations_o {-> New expr.null(kwnull, annotations_o.annotations)}
563 | {int} number annotations_o {-> New expr.dec_int(number, annotations_o.annotations)}
564 | {hex_int} hex_number annotations_o {-> New expr.hex_int(hex_number, annotations_o.annotations)}
565 | {float} float annotations_o {-> New expr.float(float, annotations_o.annotations)}
566 | {char} char annotations_o {-> New expr.char(char, annotations_o.annotations)}
567 | {string} string annotations_o {-> New expr.string(string, annotations_o.annotations)}
568 | {superstring} superstring {-> superstring.expr}
569 !nopar | {par} expr_par {-> expr_par.expr}
570 // !nopar to unambiguise 'foo[5].bar' between '(foo[5]).bar' and 'foo([5].bar),
571 !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)}
572 !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)}
573 !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)}
577 = {par} opar no any_expr [n2]:no cpar annotations_o {-> New expr.par(opar, any_expr.expr, cpar, annotations_o.annotations)}
578 | {tuple} opar no many_expr [n2]:no cpar annotations_o {-> New expr.par(opar, many_expr.expr, cpar, annotations_o.annotations)}
582 = any_expr many_expr_tail+ {-> New expr.many([any_expr.expr, many_expr_tail.expr])}
585 many_expr_tail {->expr}
586 = comma no any_expr {-> any_expr.expr}
589 array_items {-> expr*}
590 = array_item array_items_tail* {-> [array_item.expr, array_items_tail.expr]}
592 array_items_tail {-> expr}
593 = comma no array_item {-> array_item.expr}
597 | {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)}
598 | {if} kwif [n1]:no expr [n2]:no kwthen [n3]:no [then]:array_item {-> New expr.if(kwif, expr, then.expr, Null)}
601 superstring {-> expr}
602 = superstring_start superstring_middle* superstring_end annotations_o {-> New expr.superstring([superstring_start.expr, superstring_middle.expr, superstring_end.expr], annotations_o.annotations)};
603 superstring_start {-> expr*}
604 = start_string_p no expr [n2]:no {-> [start_string_p.expr, expr]}
605 | {noexpr} start_string_p no {-> [start_string_p.expr]}
607 start_string_p {-> expr}
608 = start_string {-> New expr.start_string(start_string)};
609 superstring_middle {-> expr*}
610 = mid_string_p no expr [n2]:no {-> [mid_string_p.expr, expr]}
611 | {noexpr} mid_string_p no {-> [mid_string_p.expr]}
613 mid_string_p {-> expr}
614 = mid_string {-> New expr.mid_string(mid_string)};
615 superstring_end {-> expr}
616 = end_string {-> New expr.end_string(end_string)};
618 /* ANNOTATIONS *******************************************************************/
620 annotations~nopar {-> annotations}
621 = {one} at one_annotation~nopar {-> New annotations(at, Null, [one_annotation~nopar.annotation], Null)}
622 | {many} at opar no annotation_list [n2]:no cpar {-> New annotations(at, opar, [annotation_list.annotation], cpar)}
624 annotations_o~nopar {-> annotations?}
625 = annotations~nopar {-> annotations~nopar.annotations}
629 one_annotation~nopar {-> annotation}
630 = {alone} redef visibility atid annotations_o~nopar {-> New annotation(Null, redef.kwredef, visibility, atid, Null, [], Null, annotations_o~nopar.annotations)}
631 // !nopar to unambiguise 'new T@foo(bar)' between 'new T@(foo(bar))' and 'new (T@foo)(bar)'
632 !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)}
635 many_annotations {-> annotations}
636 = {many} annotation_list {-> New annotations(Null, Null, [annotation_list.annotation], Null)}
639 annotation_list {-> annotation*}
640 = {many} one_annotation_list annotations_tail* {-> [one_annotation_list.annotation, annotations_tail.annotation] }
643 one_annotation_list~nopar {-> annotation}
644 = {alone} redef visibility atid annotations_o~nopar {-> New annotation(Null, redef.kwredef, visibility, atid, Null, [], Null, annotations_o~nopar.annotations)}
645 // !nopar to unambiguise 'new T@foo(bar)' between 'new T@(foo(bar))' and 'new (T@foo)(bar)'
646 !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)}
647 !nopar | {nopar} redef visibility atid at_arg_single {-> New annotation(Null, redef.kwredef, visibility, atid, Null, [at_arg_single.expr], Null, Null)}
649 at_arg_single {-> expr}
650 // FIXME: why expr_single but not expr_atom is not clear :(
651 = {expr} [expr]:expr_single_nopar {-> expr.expr}
654 annotations_tail {-> annotation}
655 = comma no one_annotation_list {-> one_annotation_list.annotation}
658 line_annotations {-> annotations}
659 = line_annotation+ {-> New annotations(Null, Null, [line_annotation.annotation], Null) }
661 line_annotation {-> annotation}
662 = [doc]:no redef visibility atid annotations? n1 {-> New annotation(doc.doc, redef.kwredef, visibility, atid.atid, Null, [], Null, annotations)}
663 | {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)}
664 | {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)}
666 line_annotations_forclass {-> annotations}
667 = line_annotation_forclass+ {-> New annotations(Null, Null, [line_annotation_forclass.annotation], Null) }
669 line_annotation_forclass {-> annotation}
670 = [doc]:no atid_forclass annotations? n1 {-> New annotation(doc.doc, Null, Null, atid_forclass.atid, Null, [], Null, annotations)}
671 | {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)}
672 | {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)}
675 at_args~nopar {-> expr* }
676 = {many} any_expr~nopar at_args_tail* {-> [any_expr~nopar.expr, at_args_tail.expr]}
679 at_args_tail {-> expr}
680 = comma no any_expr {-> any_expr.expr}
683 any_expr~nopar {-> expr}
684 = {type} type {-> New expr.type(type)}
685 | {expr} expr~nopar {-> expr~nopar.expr}
686 | {stmt} stmt_noexpr~nopar {-> stmt_noexpr~nopar.expr}
687 | {methid} recv~nopar qmethid_noid {-> New expr.methid(recv~nopar.expr, qmethid_noid.methid)}
688 !nopar | {at} annotations {-> New expr.at(annotations.annotations)}
691 atid~forclass {-> atid}
692 = {id} id {-> New atid.id(id)}
693 !forclass | {kwextern} kwextern {-> New atid.kwextern(kwextern)}
694 // | {kwimport} kwimport {-> New atid.kwimport(kwimport)}
695 | {kwabstract} kwabstract {-> New atid.kwabstract(kwabstract)}
698 /* MISC **********************************************************************/
700 recv~nopar~nobra {-> expr}
701 = expr_atom~nopar~nobra dot no {-> expr_atom~nopar~nobra.expr}
702 | {implicit} {-> New expr.implicit_self()}
706 = args_n {-> args_n.exprs}
707 | {empty} {-> New exprs.list([])}
710 = opar no expr_list cpar {-> New exprs.par(opar, [expr_list.expr], cpar) }
711 | {emptypar} opar no cpar {-> New exprs.par(opar, [], cpar) }
713 args_nopar {-> exprs}
714 = opar no expr_list cpar {-> New exprs.par(opar, [expr_list.expr], cpar) }
715 | {onearg} expr_nopar {-> New exprs.list([expr_nopar.expr])}
716 | {emptypar} opar no cpar {-> New exprs.par(opar, [], cpar) }
717 | {empty} {-> New exprs.list([])}
720 = obra no expr_list cbra {-> New exprs.bra(obra, [expr_list.expr], cbra)};
722 = expr_list {-> New exprs.list([expr_list.expr])};
724 = expr [n2]:no expr_tail* {-> [expr, expr_tail.expr]};
726 = comma no expr [n2]:no {-> expr};
728 = opar no idlist_nopar [n2]:no cpar {-> [idlist_nopar.id]}
729 | {nopar} idlist_nopar {-> [idlist_nopar.id]}
731 idlist_nopar {-> id*}
732 = {single} id {-> [id]}
733 | {more} idlist_nopar comma [n2]:no id {-> [idlist_nopar.id, id]}
736 module_name {-> module_name}
737 = {mod} modquad* id {-> New module_name(Null, [modquad.id], id)}
738 | {root} quad no modquad* id {-> New module_name(quad, [modquad.id], id)}
742 = {cla} modquad* classquad {-> New qualified([modquad.id], classquad.classid)}
743 | {mod} modquad+ {-> New qualified([modquad.id], Null)}
745 qualified_o {-> qualified?}
746 = qualified {-> qualified}
750 = qualified? id {-> id}
752 qclassid {-> classid}
753 = qualified? classid {-> classid}
755 qmethid~noid {-> methid}
756 = qualified? methid~noid {-> methid~noid.methid}
759 = id quad no {-> id};
760 classquad {-> classid}
761 = classid quad no {-> classid};
767 n1 = {a} comment | {b} eol;
769 = {a} n2? comment+ {-> New doc([comment])}
778 = {a} n2? comment+ eol+
782 /*****************************************************************************/
784 /*****************************************************************************/
786 module = moduledecl? [imports]:import* [extern_code_blocks]:extern_code_block* [classdefs]:classdef*;
789 = doc? kwredef? visibility kwmodule [name]:module_name annotations?;
791 import = {std} visibility kwimport [name]:module_name annotations?
792 | {no} visibility kwimport kwend
797 | {private} kwprivate
798 | {protected} kwprotected
799 | {intrude} kwintrude
802 classdef= {std} doc? kwredef? visibility classkind [id]:classid? [formaldefs]:formaldef* annotations? extern_code_block? [superclasses]:superclass* [propdefs]:propdef* kwend
803 | {top} [propdefs]:propdef*
804 | {main} [propdefs]:propdef*
808 | {abstract} kwabstract kwclass
809 | {interface} kwinterface
811 | {extern} kwextern kwclass?
813 formaldef = [id]:classid type? annotations?;
814 superclass = kwsuper type annotations?;
817 propdef = {attr} doc? kwredef? visibility kwvar [id2]:id type? expr? annotations? [block]:expr?
818 | {main_meth} kwredef? [block]:expr?
819 | {type} doc? kwredef? visibility kwtype [id]:classid type annotations?
820 | {meth} doc? kwredef? visibility kwmeth? kwinit? kwnew? methid? signature annotations? extern_calls? extern_code_block? [block]:expr?
823 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;
825 signature = opar? [params]:param* cpar? type?;
827 param = id type? dotdotdot? annotations?
830 type = kwnullable? [id]:classid [types]:type* annotations?;
834 expr = {block} expr* kwend?
835 | {vardecl} kwvar id type? assign? expr? annotations?
836 | {return} kwreturn? expr?
837 | {break} kwbreak label?
839 | {continue} kwcontinue? label?
840 | {do} kwdo [block]:expr? label?
841 | {if} kwif expr [then]:expr? [else]:expr?
842 | {ifexpr} kwif expr kwthen [then]:expr kwelse [else]:expr
843 | {while} kwwhile expr kwdo [block]:expr? label?
844 | {loop} kwloop [block]:expr? label?
845 | {for} kwfor [ids]:id* expr kwdo [block]:expr? label?
846 | {assert} kwassert id? expr [else]:expr?
849 | {binop} expr [expr2]:expr
850 | {or} expr [expr2]:expr
851 | {and} expr [expr2]:expr
852 | {or_else} expr [expr2]:expr
853 | {implies} expr [expr2]:expr
855 | {eq} expr [expr2]:expr
856 | {ne} expr [expr2]:expr
857 | {lt} expr [expr2]:expr
858 | {le} expr [expr2]:expr
859 | {ll} expr [expr2]:expr
860 | {gt} expr [expr2]:expr
861 | {ge} expr [expr2]:expr
862 | {gg} expr [expr2]:expr
864 | {plus} expr [expr2]:expr
865 | {minus} expr [expr2]:expr
866 | {starship} expr [expr2]:expr
867 | {star} expr [expr2]:expr
868 | {starstar} expr [expr2]:expr
869 | {slash} expr [expr2]:expr
870 | {percent} expr [expr2]:expr
871 | {uminus} minus expr
872 | {new} kwnew type id? [args]:exprs
873 | {attr} expr [id]:attrid
874 | {attr_assign} expr [id]:attrid assign [value]:expr
875 | {attr_reassign} expr [id]:attrid assign_op [value]:expr
876 | {call} expr id [args]:exprs
877 | {call_assign} expr id [args]:exprs assign [value]:expr
878 | {call_reassign} expr id [args]:exprs assign_op [value]:expr
879 | {super} qualified? kwsuper [args]:exprs
880 | {init} expr kwinit [args]:exprs
881 | {bra} expr [args]:exprs
882 | {bra_assign} expr [args]:exprs assign [value]:expr
883 | {bra_reassign} expr [args]:exprs assign_op [value]:expr
885 | {var_assign} id assign [value]:expr
886 | {var_reassign} id assign_op [value]:expr
887 | {range} expr [expr2]:expr annotations?
888 | {crange} obra expr [expr2]:expr cbra annotations?
889 | {orange} obra expr [expr2]:expr [cbra]:obra annotations?
890 | {array} obra [exprs]:expr* type? cbra annotations?
891 | {self} kwself annotations?
893 | {true} kwtrue annotations?
894 | {false} kwfalse annotations?
895 | {null} kwnull annotations?
896 | {dec_int} number annotations?
897 | {hex_int} hex_number annotations?
898 | {float} float annotations?
899 | {char} char annotations?
900 | {string} string annotations?
901 | {start_string} [string]:start_string
902 | {mid_string} [string]:mid_string
903 | {end_string} [string]:end_string
904 | {superstring} [exprs]:expr* annotations?
905 | {par} opar expr cpar annotations?
906 | {as_cast} expr kwas opar? type cpar?
907 | {as_notnull} expr kwas opar? kwnot kwnull cpar?
908 | {isset_attr} kwisset expr [id]:attrid
909 | {debug_type} kwdebug kwtype expr type
910 | {vararg} expr dotdotdot
912 | {methid} expr [id]:methid
914 | {many} [exprs]:expr*
917 = {list} [exprs]:expr*
918 | {par} opar [exprs]:expr* cpar
919 | {bra} obra [exprs]:expr* cbra
926 module_name = quad? [path]:id* id;
927 extern_calls = kwimport [extern_calls]:extern_call*
931 | {local_prop} methid
932 | {full_prop} type dot? methid
934 | {cast_as} [from_type]:type dot? kwas [to_type]:type
935 | {as_nullable} type kwas kwnullable
936 | {as_not_nullable} type kwas kwnot kwnullable
938 in_language = kwin string;
939 extern_code_block = in_language? extern_code_segment;
941 qualified = id* classid? ;
945 annotations = at? opar? [items]:annotation* cpar?;
947 annotation = doc? kwredef? visibility? atid opar? [args]:expr* cpar? annotations?;
949 atid = {id} id | {kwextern} [id]:kwextern | {kwabstract} [id]:kwabstract | {kwimport} [id]:kwimport;
951 /*****************************************************************************/