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. */
21 /*****************************************************************************/
23 /*****************************************************************************/
26 lowercase = ['a' .. 'z'];
27 uppercase = ['A' .. 'Z'];
29 letter = lowercase | uppercase | digit | '_';
34 any = [all - [cr + lf]];
36 // characers inside strings and super-strings (atomaton powaa)
38 = [any - [['"' + '{'] + '\']]
43 eol_helper = cr lf | cr | lf; // This takes care of different platforms
45 /*****************************************************************************/
47 /*****************************************************************************/
51 /*****************************************************************************/
53 /*****************************************************************************/
58 comment = '#' any* eol_helper;
60 kwpackage = 'package';
63 kwabstract = 'abstract';
64 kwinterface = 'interface';
65 kwuniversal = 'universal';
66 kwspecial = 'special';
68 kwmeth = 'meth' | 'fun'; //FIXME: Remove the 'meth' alternative once the transition is done
70 kwattr = 'attr'; //FIXME: remove kwattr once the transition is done
75 kwreadable = 'readable';
76 kwwritable = 'writable';
80 kwprotected = 'protected';
81 kwprivate = 'private';
82 kwintrude = 'intrude';
93 kwcontinue = 'continue';
107 kwnullable = 'nullable';
136 classid = uppercase letter*;
137 id = lowercase letter*;
138 attrid = '_' lowercase letter*;
141 float = digit* '.' digit+;
142 char = ''' [any - ''']* ''';
143 string = '"' str_body '"';
144 start_string = '"' str_body '{';
145 mid_string = '}' str_body '{';
146 end_string = '}' str_body '"';
149 /*****************************************************************************/
151 /*****************************************************************************/
155 /*****************************************************************************/
157 /*****************************************************************************/
159 /* MODULES *******************************************************************/
161 = packagedecl? [imports]:import* [classdefs]:classdef* implicit_top_class? implicit_main_class? {-> New module(packagedecl, [imports.import],[classdefs.classdef,implicit_top_class.classdef,implicit_main_class.classdef])};
164 = [doc]:no kwpackage no id [n2]:n1 {-> New packagedecl(doc.doc, kwpackage, id)};
167 = [doc]:no visibility kwimport no id [n2]:n1 {-> New import(visibility, kwimport, id)}
168 | {no} [doc]:no visibility kwimport no kwend [n2]:n1 {-> New import.no(visibility, kwimport, kwend)}
171 implicit_top_class {-> classdef}
172 = propdefs_toplevel {-> New classdef.top([propdefs_toplevel.propdef])};
174 implicit_main_class {-> classdef?}
175 = implicit_main_meth {-> New classdef.main([implicit_main_meth.propdef])}
178 implicit_main_meth {-> propdef}
179 = [doc]:no stmts no {-> New propdef.main_meth(Null, stmts.expr)};
181 /* CLASSES *******************************************************************/
183 = [doc]:no redef visibility classkind no classid formaldefs? [specials]:special* propdefs? [n2]:no kwend {-> New classdef(doc.doc, redef.kwredef, visibility, classkind, classid, [formaldefs.formaldef], [specials.superclass], [propdefs.propdef])};
185 = kwredef? {-> kwredef};
188 | {abstract} kwabstract kwclass
189 | {interface} kwinterface
190 | {universal} kwuniversal
193 formaldefs {-> formaldef*}
194 = obra no formaldef formaldefs_tail* [n2]:no cbra {-> [formaldef, formaldefs_tail.formaldef]};
195 formaldefs_tail {-> formaldef}
196 = comma no formaldef {-> formaldef};
198 = classid typing? {-> New formaldef(classid, typing.type)};
200 special {-> superclass}
201 = no kwspecial [n2]:no type {-> New superclass(kwspecial, type)};
203 propdefs~toplevel {-> propdef*}
204 = propdef~toplevel n1 propdefs_tail~toplevel* {-> [propdef~toplevel.propdef, propdefs_tail~toplevel.propdef]}
206 propdefs_tail~toplevel {-> propdef}
207 = propdef~toplevel n1 {-> propdef~toplevel.propdef}
209 propdef~toplevel {-> propdef}
210 = {meth} [doc]:no redef visibility kwmeth methid signature kwdo stmtso kwend? {-> New propdef.concrete_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature, stmtso.expr)}
211 !toplevel| {deferred} [doc]:no redef visibility kwmeth methid signature kwis kwabstract {-> New propdef.deferred_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature)}
212 !toplevel| {intern} [doc]:no redef visibility kwmeth methid signature kwis kwintern {-> New propdef.intern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature)}
213 | {extern} [doc]:no redef visibility kwmeth methid signature kwis kwextern string? {-> New propdef.extern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature, string)}
214 //FIXME: Remove attr alternative once the transition is done
215 !toplevel| {attr} [doc]:no readable writable redef visibility kwattr attrid typing? {-> New propdef.attr(doc.doc, readable.able, writable.able, redef.kwredef, visibility, kwattr, Null, attrid, typing.type, Null)}
216 !toplevel| {attr2} [doc]:no readable writable redef visibility kwattr attrid typing? assign [n2]:no expr {-> New propdef.attr(doc.doc, readable.able, writable.able, redef.kwredef, visibility, kwattr, Null, attrid, typing.type, expr)}
217 !toplevel| {var} [doc]:no readable writable redef visibility kwvar attrid typing? {-> New propdef.attr(doc.doc, readable.able, writable.able, redef.kwredef, visibility, Null, kwvar, attrid, typing.type, Null)}
218 !toplevel| {var2} [doc]:no readable writable redef visibility kwvar attrid typing? assign [n2]:no expr {-> New propdef.attr(doc.doc, readable.able, writable.able, redef.kwredef, visibility, Null, kwvar, attrid, typing.type, expr)}
219 !toplevel| {init} [doc]:no redef visibility kwinit methid? signature kwdo stmtso kwend? {-> New propdef.concrete_init(doc.doc, redef.kwredef, visibility, kwinit, methid, signature, stmtso.expr)}
220 !toplevel| {type} [doc]:no redef visibility kwtype classid typing {-> New propdef.type(doc.doc, redef.kwredef, visibility, kwtype, classid, typing.type)}
223 = redef kwreadable {-> New able.read(redef.kwredef, kwreadable)}
227 = redef kwwritable {-> New able.write(redef.kwredef, kwwritable)}
232 = {public} {-> New visibility.public()}
233 | {private} kwprivate no {-> New visibility.private(kwprivate)}
234 | {protected} kwprotected no {-> New visibility.protected(kwprotected)}
235 | {intrude} kwintrude no {-> New visibility.intrude(kwintrude)}
252 | {starship} starship
254 | {braassign} obra cbra assign
258 = params? typing? closure_decls {-> New signature([params.param], typing.type, [closure_decls.closure_decl])}
259 | {noclosures} params? typing? no {-> New signature([params.param], typing.type, [])}
262 signature_noclosures {-> signature}
263 = params? typing? {-> New signature([params.param], typing.type, [])};
266 = opar no param params_tail* [n2]:no cpar {-> [param, params_tail.param]}
267 | {empty} opar no cpar {-> []}
269 params_tail {-> param}
270 = comma no param {-> param};
272 = {untyped} id {-> New param(id, Null, Null)}
273 | id typing dotdotdot? {-> New param(id, typing.type, dotdotdot)}
276 closure_decls {->closure_decl*}
277 = no closure_decl+ {-> [closure_decl]};
279 = kwwith kwbreak? [no2]:no id signature_noclosures n {-> New closure_decl(kwwith, kwbreak, id, signature_noclosures.signature, Null)}
280 | {optionnal} kwwith kwbreak? [no2]:no id signature_noclosures kwdo stmtso n {-> New closure_decl(kwwith, kwbreak, id, signature_noclosures.signature, stmtso.expr)}
283 /* TYPES *********************************************************************/
285 = {simple} kwnullable? classid {-> New type(kwnullable, classid, [])}
286 !nobra | {generic} kwnullable? classid obra no types [n2]:no cbra {-> New type(kwnullable, classid, [types.type])}
289 = type types_tail* {-> [type, types_tail.type]};
291 = comma no type {-> type};
293 = column no type {-> type};
295 /* STATMENTS *****************************************************************/
296 stmtso~withelse {-> expr?}
297 = {oneline} stmt~withelse {-> stmt~withelse.expr}
298 | {block} n stmts [n2]:n kwend {-> stmts.expr}
299 | {emptyblock} n kwend {-> New expr.block([])}
300 | {emptyoneline} kwend {-> New expr.block([])}
303 = stmt stmts_tail* {-> New expr.block([stmt.expr, stmts_tail.expr])};
305 = n stmt {-> stmt.expr};
306 stmt~withelse {-> expr}
307 = {vardecl} vardecl~withelse {-> vardecl~withelse.expr}
308 | {assign} assignment~withelse {-> assignment~withelse.expr}
309 | {return} kwreturn expr_final~withelse? {-> New expr.return(kwreturn, expr_final~withelse.expr)}
310 | {break} kwbreak expr_final~withelse? {-> New expr.break(kwbreak, expr_final~withelse.expr)}
311 | {abort} kwabort {-> New expr.abort(kwabort)}
312 | {continue} kwcontinue expr_final~withelse? {-> New expr.continue(kwcontinue, expr_final~withelse.expr)}
313 | {do} do~withelse {-> do~withelse.expr}
314 | {if} if~withelse {-> if~withelse.expr}
315 | {while} while~withelse {-> while~withelse.expr}
316 | {for} for~withelse {-> for~withelse.expr}
317 | {assert} assert~withelse {-> assert~withelse.expr}
318 | {call} recv id args_nopar closure_defs~withelse? {-> New expr.call(recv.expr, id, [args_nopar.expr], [closure_defs~withelse.closure_def])}
319 | {super} qualified? kwsuper args_nopar {-> New expr.super(qualified, kwsuper, [args_nopar.expr])}
320 | {init} recv kwinit args_nopar {-> New expr.init(recv.expr, kwinit, [args_nopar.expr])}
323 closure_defs~withelse {-> closure_def*}
324 = {one} closure_def_last~withelse {-> [closure_def_last~withelse.closure_def]}
325 | closure_def closure_defs~withelse {-> [closure_def, closure_defs~withelse.closure_def]}
328 closure_def_last~withelse {-> closure_def}
329 = kwwith idlist? kwdo stmtso~withelse {-> New closure_def(kwwith, [idlist.id], kwdo, stmtso~withelse.expr)}
332 closure_def {-> closure_def}
333 = kwwith idlist? kwdo n stmts [n2]:n {-> New closure_def(kwwith, [idlist.id], kwdo, stmts.expr)}
334 | {empty} kwwith idlist? kwdo n {-> New closure_def(kwwith, [idlist.id], kwdo, Null)}
337 vardecl~withelse{-> expr}
338 = kwvar id typing? {-> New expr.vardecl(kwvar, id, typing.type, Null, Null)}
339 | {assign} kwvar id typing? assign no expr_final~withelse {-> New expr.vardecl(kwvar, id, typing.type, assign, expr_final~withelse.expr)}
342 assignment~withelse {-> expr}
343 = {attr} recv attrid assign expr_final~withelse {-> New expr.attr_assign(recv.expr, attrid, assign, expr_final~withelse.expr)}
344 | {call} recv id args assign expr_final~withelse {-> New expr.call_assign(recv.expr, id, [args.expr], assign, expr_final~withelse.expr)}
345 | {bra} expr_atom braargs assign expr_final~withelse {-> New expr.bra_assign(expr_atom.expr, [braargs.expr], assign, expr_final~withelse.expr)}
346 | {attr_re} recv attrid assign_op expr_final~withelse {-> New expr.attr_reassign(recv.expr, attrid, assign_op, expr_final~withelse.expr)}
347 | {call_re} recv id args assign_op expr_final~withelse {-> New expr.call_reassign(recv.expr, id, [args.expr], assign_op, expr_final~withelse.expr)}
348 | {bra_re} expr_atom braargs assign_op expr_final~withelse {-> New expr.bra_reassign(expr_atom.expr, [braargs.expr], assign_op, expr_final~withelse.expr)}
355 do~withelse {-> expr}
356 = kwdo stmtso~withelse {-> New expr.do(kwdo, stmtso~withelse.expr)}
359 if~withelse {-> expr}
360 = {onelineelse} kwif no expr [n2]:no kwthen stmt_withelse kwelse stmtso~withelse {-> New expr.if(kwif, expr, stmt_withelse.expr, stmtso~withelse.expr)}
361 !withelse | {oneline} kwif no expr [n2]:no kwthen stmt {-> New expr.if(kwif, expr, stmt.expr, Null)}
362 !withelse | {block} kwif no expr [n2]:no kwthen [n3]:n stmts [n4]:n elsepartblock {-> New expr.if(kwif, expr, stmts.expr, elsepartblock.expr)}
363 !withelse | {emptyblock} kwif no expr [n2]:no kwthen [n3]:n? elsepartblock {-> New expr.if(kwif, expr, Null, elsepartblock.expr)}
365 elsepartblock {-> expr?}
366 = {else} kwelse stmtso {-> stmtso.expr}
367 | {empty} kwend {-> Null}
370 while~withelse {-> expr}
371 = kwwhile no expr [n2]:no kwdo stmtso~withelse {-> New expr.while(kwwhile, expr, kwdo, stmtso~withelse.expr)};
373 for~withelse {-> expr}
374 = kwfor no id [n2]:no kwin [n3]:no expr [n4]:no kwdo stmtso~withelse {-> New expr.for(kwfor, id, expr, kwdo, stmtso~withelse.expr)};
376 assert~withelse {-> expr}
377 = kwassert assertid? expr_final~withelse {-> New expr.assert(kwassert, assertid.id, expr_final~withelse.expr)};
381 /* EXPRESSIONS ***************************************************************/
382 expr_final~nopar~withelse~nobra {-> expr}
383 = expr~nopar~nobra {-> expr~nopar~nobra.expr}
384 | {closure_call} recv~nobra id args closure_defs~withelse {-> New expr.call(recv~nobra.expr, id, [args.expr], [closure_defs~withelse.closure_def])}
385 !nobra!nopar | {closure_bra} expr_atom braargs closure_defs~withelse {-> New expr.bra(expr_atom.expr, [braargs.expr], [closure_defs~withelse.closure_def])}
388 expr~nopar~nobra {-> expr}
389 = expr_and~nopar~nobra {-> expr_and~nopar~nobra.expr}
390 | {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)}
393 expr_and~nopar~nobra {-> expr}
394 = expr_not~nopar~nobra {-> expr_not~nopar~nobra.expr}
395 | {or} expr_and~nopar~nobra kwor no expr_not~nopar~nobra {-> New expr.or(expr_and~nopar~nobra.expr, expr_not~nopar~nobra.expr)}
396 | {and} expr_and~nopar~nobra kwand no expr_not~nopar~nobra {-> New expr.and(expr_and~nopar~nobra.expr, expr_not~nopar~nobra.expr)}
399 expr_not~nopar~nobra {-> expr}
400 = expr_eq~nopar~nobra {-> expr_eq~nopar~nobra.expr}
401 | {not} kwnot no expr_not~nopar~nobra {-> New expr.not(kwnot, expr_not~nopar~nobra.expr)}
404 expr_eq~nopar~nobra {-> expr}
405 = expr_add~nopar~nobra {-> expr_add~nopar~nobra.expr}
406 | {eq} expr_add~nopar~nobra eq no [expr2]:expr_add~nopar~nobra {-> New expr.eq(expr_add~nopar~nobra.expr, expr2.expr)}
407 | {ee} expr_add~nopar~nobra kwis no [expr2]:expr_add~nopar~nobra {-> New expr.ee(expr_add~nopar~nobra.expr, expr2.expr)}
408 | {ne} expr_add~nopar~nobra ne no [expr2]:expr_add~nopar~nobra {-> New expr.ne(expr_add~nopar~nobra.expr, expr2.expr)}
409 | {lt} expr_add~nopar~nobra lt no [expr2]:expr_add~nopar~nobra {-> New expr.lt(expr_add~nopar~nobra.expr, expr2.expr)}
410 | {le} expr_add~nopar~nobra le no [expr2]:expr_add~nopar~nobra {-> New expr.le(expr_add~nopar~nobra.expr, expr2.expr)}
411 | {gt} expr_add~nopar~nobra gt no [expr2]:expr_add~nopar~nobra {-> New expr.gt(expr_add~nopar~nobra.expr, expr2.expr)}
412 | {ge} expr_add~nopar~nobra ge no [expr2]:expr_add~nopar~nobra {-> New expr.ge(expr_add~nopar~nobra.expr, expr2.expr)}
413 | {starship} expr_add~nopar~nobra starship no [expr2]:expr_add~nopar~nobra {-> New expr.starship(expr_add~nopar~nobra.expr, expr2.expr)}
414 | {isa} expr_add~nopar~nobra kwisa no type~nobra {-> New expr.isa(expr_add~nopar~nobra.expr, type~nobra.type)}
417 expr_add~nopar~nobra {-> expr}
418 = expr_mul~nopar~nobra {-> expr_mul~nopar~nobra.expr}
419 | {plus} expr_add~nopar~nobra plus no [expr2]:expr_mul~nopar~nobra {-> New expr.plus(expr_add~nopar~nobra.expr, expr2.expr)}
420 | {minus} expr_add~nopar~nobra minus no [expr2]:expr_mul~nopar~nobra {-> New expr.minus(expr_add~nopar~nobra.expr, expr2.expr)}
423 expr_mul~nopar~nobra {-> expr}
424 = expr_minus~nopar~nobra {-> expr_minus~nopar~nobra.expr}
425 | {star} expr_mul~nopar~nobra star no [expr2]:expr_minus~nopar~nobra {-> New expr.star(expr_mul~nopar~nobra.expr, expr2.expr)}
426 | {slash} expr_mul~nopar~nobra slash no [expr2]:expr_minus~nopar~nobra {-> New expr.slash(expr_mul~nopar~nobra.expr, expr2.expr)}
427 | {percent} expr_mul~nopar~nobra percent no [expr2]:expr_minus~nopar~nobra {-> New expr.percent(expr_mul~nopar~nobra.expr, expr2.expr)}
430 expr_minus~nopar~nobra {-> expr}
431 = expr_new~nopar~nobra {-> expr_new~nopar~nobra.expr}
432 | {minus} minus no expr_minus~nopar~nobra {-> New expr.uminus(minus, expr_minus~nopar~nobra.expr)}
433 | {once} kwonce no expr_minus~nopar~nobra {-> New expr.once(kwonce, expr_minus~nopar~nobra.expr)}
436 expr_new~nopar~nobra {-> expr}
437 = expr_atom~nopar~nobra {-> expr_atom~nopar~nobra.expr}
438 | {new} kwnew no type~nobra args {-> New expr.new(kwnew, type~nobra.type, Null, [args.expr])}
439 | {isset_attr} kwisset recv~nopar~nobra attrid {-> New expr.isset_attr(kwisset, recv~nopar~nobra.expr, attrid)}
442 expr_atom~nopar~nobra {-> expr}
443 = {attr} recv~nopar~nobra attrid {-> New expr.attr(recv~nopar~nobra.expr, attrid)}
444 | {call} recv~nopar~nobra id args {-> New expr.call(recv~nopar~nobra.expr, id, [args.expr], [])}
445 | {super} qualified? kwsuper args {-> New expr.super(qualified, kwsuper, [args.expr])}
446 | {init} recv~nopar~nobra kwinit args {-> New expr.init(recv~nopar~nobra.expr, kwinit, [args.expr])}
447 !nobra!nopar | {bra} expr_atom braargs {-> New expr.bra(expr_atom.expr, [braargs.expr], [])}
448 | {new} kwnew no type~nobra dot [n2]:no id args {-> New expr.new(kwnew, type~nobra.type, id, [args.expr])}
449 !nobra!nopar | {range} obra no expr [n2]:no dotdot [n3]:no [expr2]:expr_nobra [n4]:no cbra {-> New expr.crange(expr, expr2.expr)}
450 !nobra!nopar | {orange} obra no expr [n2]:no dotdot [n3]:no [expr2]:expr_nobra [n4]:no [cbra]:obra {-> New expr.orange(expr, expr2.expr)}
451 !nobra!nopar | {array} braargs {-> New expr.array([braargs.expr])}
452 | {self} kwself {-> New expr.self(kwself)}
453 | {true} kwtrue {-> New expr.true(kwtrue)}
454 | {false} kwfalse {-> New expr.false(kwfalse)}
455 | {null} kwnull {-> New expr.null(kwnull)}
456 | {int} number {-> New expr.int(number)}
457 | {float} float {-> New expr.float(float)}
458 | {char} char {-> New expr.char(char)}
459 | {string} string {-> New expr.string(string)}
460 | {superstring} superstring {-> superstring.expr}
461 !nopar | {par} opar expr cpar {-> expr}
462 | {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, type)}
463 | {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, kwnot, kwnull)}
466 superstring {-> expr}
467 = superstring_start superstring_middle* superstring_end {-> New expr.superstring([superstring_start.expr, superstring_middle.expr, superstring_end.expr])};
468 superstring_start {-> expr*}
469 = start_string_p no expr [n2]:no {-> [start_string_p.expr, expr]};
470 start_string_p {-> expr}
471 = start_string {-> New expr.start_string(start_string)};
472 superstring_middle {-> expr*}
473 = mid_string_p no expr [n2]:no {-> [mid_string_p.expr, expr]};
474 mid_string_p {-> expr}
475 = mid_string {-> New expr.mid_string(mid_string)};
476 superstring_end {-> expr}
477 = end_string {-> New expr.end_string(end_string)};
479 /* MISC **********************************************************************/
481 recv~nopar~nobra {-> expr}
482 = expr_atom~nopar~nobra dot no {-> expr_atom~nopar~nobra.expr}
483 | {implicit} {-> New expr.implicit_self()}
487 = opar no expr [n2]:no args_tail* cpar {-> [expr, args_tail.expr]}
488 | {emptypar} opar no cpar {-> []}
491 args_nopar {-> expr*}
492 = opar no expr [n2]:no args_tail* cpar {-> [expr, args_tail.expr]}
493 | {onearg} expr_nopar {-> [expr_nopar.expr]}
494 | {emptypar} opar no cpar {-> []}
498 = obra no expr [n2]:no args_tail* cbra {-> [expr, args_tail.expr]};
500 = comma no expr [n2]:no {-> expr};
502 = {single} id {-> [id]}
503 | {more} idlist no comma [n2]:no id {-> [idlist.id, id]}
507 = {cla} modquad* classquad {-> New qualified([modquad.id], classquad.classid)}
508 | {mod} modquad+ {-> New qualified([modquad.id], Null)}
511 = id quad no {-> id};
512 classquad {-> classid}
513 = classid quad no {-> classid};
515 n1 = {a} comment | {b} eol;
517 = {a} n2? comment+ {-> New doc([comment])}
526 = {a} n2? comment+ eol+
530 /*****************************************************************************/
532 /*****************************************************************************/
534 module = packagedecl? [imports]:import* [classdefs]:classdef*;
539 import = visibility kwimport id
540 | {no} visibility kwimport kwend
545 | {private} kwprivate
546 | {protected} kwprotected
547 | {intrude} kwintrude
550 classdef = doc? kwredef? visibility classkind [id]:classid? [formaldefs]:formaldef* [superclasses]:superclass* [propdefs]:propdef*
551 | {top} [propdefs]:propdef*
552 | {main} [propdefs]:propdef*
556 | {abstract} kwabstract kwclass
557 | {interface} kwinterface
558 | {universal} kwuniversal
560 formaldef = [id]:classid type?;
561 superclass = kwspecial type;
564 propdef = {attr} doc? [readable]:able? [writable]:able? kwredef? visibility kwattr? kwvar? [id]:attrid type? expr? // Remove the kwattr? once the transition is done
565 | {meth} doc? kwredef? visibility methid signature
566 | {deferred_meth} doc? kwredef? visibility kwmeth methid signature
567 | {intern_meth} doc? kwredef? visibility kwmeth methid signature
568 | {extern_meth} doc? kwredef? visibility kwmeth methid signature [extern]:string?
569 | {concrete_meth} doc? kwredef? visibility kwmeth methid signature [block]:expr?
570 | {concrete_init} doc? kwredef? visibility kwinit methid? signature [block]:expr?
571 | {main_meth} kwredef? [block]:expr?
572 | {type} doc? kwredef? visibility kwtype [id]:classid type
575 able = {read} kwredef? kwreadable
576 | {write} kwredef? kwwritable
579 methid = {id} id | {plus} plus | {minus} minus | {star} star | {slash} slash | {percent} percent | {eq} eq | {ne} ne | {le} le | {ge} ge | {lt} lt | {gt} gt | {bra} obra cbra | {starship} starship | {assign} id assign | {braassign} obra cbra assign;
581 signature = [params]:param* type? [closure_decls]:closure_decl*;
583 param = id type? dotdotdot?
586 closure_decl = kwwith kwbreak? id signature expr?
589 type = kwnullable? [id]:classid [types]:type*;
592 | {vardecl} kwvar id type? assign? expr?
593 | {return} kwreturn expr?
594 | {break} kwbreak expr?
596 | {continue} kwcontinue expr?
597 | {do} kwdo [block]:expr?
598 | {if} kwif expr [then]:expr? [else]:expr?
599 | {ifexpr} kwif expr kwthen [then]:expr kwelse [else]:expr
600 | {while} kwwhile expr kwdo [block]:expr?
601 | {for} kwfor id expr kwdo [block]:expr?
602 | {assert} kwassert id? expr
605 | {binop} expr [expr2]:expr
606 | {or} expr [expr2]:expr
607 | {and} expr [expr2]:expr
609 | {eq} expr [expr2]:expr
610 | {ee} expr [expr2]:expr
611 | {ne} expr [expr2]:expr
612 | {lt} expr [expr2]:expr
613 | {le} expr [expr2]:expr
614 | {gt} expr [expr2]:expr
615 | {ge} expr [expr2]:expr
617 | {plus} expr [expr2]:expr
618 | {minus} expr [expr2]:expr
619 | {starship} expr [expr2]:expr
620 | {star} expr [expr2]:expr
621 | {slash} expr [expr2]:expr
622 | {percent} expr [expr2]:expr
623 | {uminus} minus expr
624 | {new} kwnew type id? [args]:expr*
625 | {attr} expr [id]:attrid
626 | {attr_assign} expr [id]:attrid assign [value]:expr
627 | {attr_reassign} expr [id]:attrid assign_op [value]:expr
628 | {call} expr id [args]:expr* [closure_defs]:closure_def*
629 | {call_assign} expr id [args]:expr* assign [value]:expr
630 | {call_reassign} expr id [args]:expr* assign_op [value]:expr
631 | {super} qualified? kwsuper [args]:expr*
632 | {init} expr kwinit [args]:expr*
633 | {bra} expr [args]:expr* [closure_defs]:closure_def*
634 | {bra_assign} expr [args]:expr* assign [value]:expr
635 | {bra_reassign} expr [args]:expr* assign_op [value]:expr
636 | {closure_call} id [args]:expr* [closure_defs]:closure_def*
638 | {var_assign} id assign [value]:expr
639 | {var_reassign} id assign_op [value]:expr
640 | {range} expr [expr2]:expr
641 | {crange} expr [expr2]:expr
642 | {orange} expr [expr2]:expr
643 | {array} [exprs]:expr*
653 | {start_string} [string]:start_string
654 | {mid_string} [string]:mid_string
655 | {end_string} [string]:end_string
656 | {superstring} [exprs]:expr*
658 | {as_cast} expr kwas type
659 | {as_notnull} expr kwas kwnot kwnull
660 | {isset_attr} kwisset expr [id]:attrid
668 = kwwith id* kwdo expr?
671 qualified = id* classid? ;
675 /*****************************************************************************/