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 letter = lowercase | uppercase | digit | '_';
35 any = [all - [cr + lf]];
37 // characers inside strings and super-strings (atomaton powaa)
39 = [any - [['"' + '{'] + '\']]
48 extern_code_body = extern_code_char*;
50 eol_helper = cr lf | cr | lf; // This takes care of different platforms
52 /*****************************************************************************/
54 /*****************************************************************************/
58 /*****************************************************************************/
60 /*****************************************************************************/
65 comment = '#' any* eol_helper?;
67 kwmodule = 'package'|'module';
70 kwabstract = 'abstract';
71 kwinterface = 'interface';
72 kwenum = 'universal'|'enum';
80 kwreadable = 'readable';
81 kwwritable = 'writable';
85 kwprotected = 'protected';
86 kwprivate = 'private';
87 kwintrude = 'intrude';
99 kwcontinue = 'continue';
112 kwnullable = 'nullable';
115 kwdebug = '__debug__';
146 classid = uppercase letter*;
147 id = lowercase letter*;
148 attrid = '_' lowercase letter*;
151 float = digit* '.' digit+;
152 char = (''' [[any - '''] - '\'] ''') | (''' '\' any ''');
153 string = '"' str_body '"';
154 start_string = '"' str_body '{';
155 mid_string = '}' str_body '{';
156 end_string = '}' str_body '"';
157 bad_char = ''' '\'? any;
158 bad_string = ('"'|'}') str_body;
160 extern_code_segment = '`' '{' extern_code_body '`' '}';
162 /*****************************************************************************/
164 /*****************************************************************************/
168 /*****************************************************************************/
170 /*****************************************************************************/
172 /* MODULES *******************************************************************/
174 = moduledecl? [imports]:import* [extern_bodies]:extern_code_body* [classdefs]:classdef* implicit_top_class? implicit_main_class? {-> New module(moduledecl, [imports.import], [extern_bodies.extern_code_block], [classdefs.classdef,implicit_top_class.classdef,implicit_main_class.classdef])};
177 = [doc]:no kwmodule no module_name [n2]:n1 {-> New moduledecl(doc.doc, kwmodule, module_name)};
180 = {std} [doc]:no visibility kwimport no module_name [n2]:n1 {-> New import.std(visibility, kwimport, module_name)}
181 | {no} [doc]:no visibility kwimport no kwend [n2]:n1 {-> New import.no(visibility, kwimport, kwend)}
184 implicit_top_class {-> classdef}
185 = propdefs_toplevel+ {-> New classdef.top([propdefs_toplevel.propdef])};
187 implicit_main_class {-> classdef?}
188 = implicit_main_meth {-> New classdef.main([implicit_main_meth.propdef])}
191 implicit_main_meth {-> propdef}
192 = [doc]:no stmts {-> New propdef.main_meth(Null, stmts.expr)}
193 | {n} [doc]:no stmtsn {-> New propdef.main_meth(Null, stmtsn.expr)}
196 /* CLASSES *******************************************************************/
198 = [doc]:no redef visibility classkind no classid formaldefs? extern_code_block? [superclasses]:superclass* propdefs* [n2]:no kwend {-> New classdef.std(doc.doc, redef.kwredef, visibility, classkind, classid, [formaldefs.formaldef], extern_code_block, [superclasses.superclass], [propdefs.propdef], kwend)};
200 = kwredef? {-> kwredef};
203 | {abstract} kwabstract kwclass
204 | {interface} kwinterface
206 | {extern} kwextern kwclass?
209 formaldefs {-> formaldef*}
210 = obra no formaldef formaldefs_tail* [n2]:no cbra {-> [formaldef, formaldefs_tail.formaldef]};
211 formaldefs_tail {-> formaldef}
212 = comma no formaldef {-> formaldef};
214 = classid typing? {-> New formaldef(classid, typing.type)};
216 superclass {-> superclass}
217 = {super} no kwsuper [n2]:no type {-> New superclass(kwsuper, type)}
220 propdefs~toplevel {-> propdef}
221 = propdef~toplevel n1 {-> propdef~toplevel.propdef}
223 propdef~toplevel {-> propdef}
224 = {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)}
225 | {assign_return} [doc]:no redef visibility kwmeth methid signature_withret assign no assign_return {-> New propdef.concrete_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature_withret.signature, assign_return.expr)}
226 !toplevel| {deferred} [doc]:no redef visibility kwmeth methid signature kwis kwabstract {-> New propdef.deferred_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature)}
227 !toplevel| {intern} [doc]:no redef visibility kwmeth methid signature kwis kwintern {-> New propdef.intern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature)}
228 | {extern} [doc]:no redef visibility kwmeth methid signature kwis kwextern string? extern_calls? extern_code_block? {-> New propdef.extern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature, string, extern_calls, extern_code_block)}
229 | {extern_implicit} [doc]:no redef visibility kwmeth methid signature extern_calls? extern_code_block {-> New propdef.extern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature, Null, extern_calls, extern_code_block)}
230 !toplevel| {var} [doc]:no readable? writable? redef visibility kwvar attrid typing? {-> New propdef.attr(doc.doc, readable.able, writable.able, redef.kwredef, visibility, kwvar, attrid, Null, typing.type, Null)}
231 !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, kwvar, attrid, Null, typing.type, expr)}
232 !toplevel| {var3} [doc]:no redef visibility kwvar id typing? writable2? {-> New propdef.attr(doc.doc, Null, writable2.able, redef.kwredef, visibility, kwvar, Null, id, typing.type, Null)}
233 !toplevel| {var4} [doc]:no redef visibility kwvar id typing? writable2? assign [n2]:no expr {-> New propdef.attr(doc.doc, Null, writable2.able, redef.kwredef, visibility, kwvar, Null, id, typing.type, expr)}
234 !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)}
235 !toplevel| {type} [doc]:no redef visibility kwtype classid typing {-> New propdef.type(doc.doc, redef.kwredef, visibility, kwtype, classid, typing.type)}
236 !toplevel| {extern_init} [doc]:no redef visibility kwnew methid? signature kwis kwextern string? extern_calls? extern_code_block? {-> New propdef.extern_init(doc.doc, redef.kwredef, visibility, kwnew, methid, signature, string, extern_calls, extern_code_block)}
237 !toplevel| {extern_init_implicit} [doc]:no redef visibility kwnew methid? signature string? extern_calls? extern_code_block {-> New propdef.extern_init(doc.doc, redef.kwredef, visibility, kwnew, methid, signature, string, extern_calls, extern_code_block)}
240 = redef kwreadable {-> New able.read(redef.kwredef, kwreadable)}
243 = redef kwwritable {-> New able.write(redef.kwredef, Null, kwwritable)}
246 = redef visibility kwwritable {-> New able.write(redef.kwredef, visibility, kwwritable)}
250 = {public} {-> New visibility.public()}
251 | {private} kwprivate no {-> New visibility.private(kwprivate)}
252 | {protected} kwprotected no {-> New visibility.protected(kwprotected)}
253 | {intrude} kwintrude no {-> New visibility.intrude(kwintrude)}
257 = {id} id {-> New methid.id(id)}
258 | {plus} plus {-> New methid.plus(plus)}
259 | {minus} minus {-> New methid.minus(minus)}
260 | {star} star {-> New methid.star(star)}
261 | {slash} slash {-> New methid.slash(slash)}
262 | {percent} percent {-> New methid.percent(percent)}
263 | {eq} eq {-> New methid.eq(eq)}
264 | {ne} ne {-> New methid.ne(ne)}
265 | {le} le {-> New methid.le(le)}
266 | {ge} ge {-> New methid.ge(ge)}
267 | {lt} lt {-> New methid.lt(lt)}
268 | {gt} gt {-> New methid.gt(gt)}
269 | {ll} ll {-> New methid.ll(ll)}
270 | {gg} gg {-> New methid.gg(gg)}
271 | {bra} obra cbra {-> New methid.bra(obra, cbra)}
272 | {starship} starship {-> New methid.starship(starship)}
273 | {assign} id assign {-> New methid.assign(id, assign)}
274 | {braassign} obra cbra assign {-> New methid.braassign(obra, cbra, assign)}
277 signature~withret {-> signature}
278 = opar no params? cpar typing [no2]:no closure_decls? {-> New signature(opar, [params.param], cpar, typing.type, [closure_decls.closure_decl])}
279 !withret| {noret} opar no params? cpar [no2]:no closure_decls? {-> New signature(opar, [params.param], cpar, Null, [closure_decls.closure_decl])}
280 | {nopar} typing no closure_decls? {-> New signature(Null, [], Null, typing.type, [closure_decls.closure_decl])}
281 !withret| {noparnoret} no closure_decls? {-> New signature(Null, [], Null, Null, [closure_decls.closure_decl])}
284 signature_noclosures {-> signature}
285 = opar no params? cpar typing? {-> New signature(opar, [params.param], cpar, typing.type, [])}
286 | {nopar} typing? {-> New signature(Null, [], Null, typing.type, [])}
290 = param params_tail* [n2]:no {-> [param, params_tail.param] }
292 params_tail {-> param}
293 = comma no param {-> param};
295 = {untyped} id {-> New param(id, Null, Null)}
296 | id typing dotdotdot? {-> New param(id, typing.type, dotdotdot)}
299 closure_decls {->closure_decl*}
300 = closure_decl+ {-> [closure_decl]};
302 = kwbreak? bang id signature_noclosures n {-> New closure_decl(kwbreak, bang, id, signature_noclosures.signature, Null)}
303 | {optionnal} kwbreak? bang id signature_noclosures kwdo stmtso n {-> New closure_decl(kwbreak, bang, id, signature_noclosures.signature, stmtso.expr)}
304 | {assign} kwbreak? bang id signature_noclosures assign no assign_continue n {-> New closure_decl(kwbreak, bang, id, signature_noclosures.signature, assign_continue.expr)}
307 assign_return{-> expr}
308 = expr_final {-> New expr.return(Null, expr_final.expr)}
311 extern_calls {-> extern_calls}
312 = kwimport no extern_call extern_call_tail* {-> New extern_calls( kwimport, [extern_call, extern_call_tail.extern_call] )}
314 extern_call_tail {-> extern_call}
315 = comma no extern_call {-> extern_call};
316 extern_call {-> extern_call}
317 = {prop} extern_call_prop {-> extern_call_prop.extern_call}
318 | {cast} extern_call_cast {-> extern_call_cast.extern_call}
319 | {super} kwsuper {-> New extern_call.super( kwsuper )}
321 extern_call_prop {-> extern_call}
322 = {local} methid {-> New extern_call.local_prop( methid )}
323 | {full} classid quad methid {-> New extern_call.full_prop( classid, quad, methid )}
324 | {init} classid {-> New extern_call.init_prop( classid )}
326 extern_call_cast {-> extern_call}
327 = {as_cast} [from_type]:type kwas [n2]:no opar [n3]:no [to_type]:type [n4]:no cpar {-> New extern_call.cast_as(from_type, kwas, to_type)}
328 | {as_nullable} type kwas [n2]:no kwnullable {-> New extern_call.as_nullable( type, kwas, kwnullable)}
329 | {as_not_nullable} type kwas [n2]:no kwnot [n3]:no kwnullable {-> New extern_call.as_not_nullable( type, kwas, kwnot, kwnullable)}
332 in_language = kwin string;
333 extern_code_block = in_language? extern_code_segment;
334 extern_code_body {-> extern_code_block} = no extern_code_block {-> extern_code_block};
336 /* TYPES *********************************************************************/
338 = {simple} kwnullable? classid {-> New type(kwnullable, classid, [])}
339 !nobra | {generic} kwnullable? classid obra no types [n2]:no cbra {-> New type(kwnullable, classid, [types.type])}
342 = type types_tail* {-> [type, types_tail.type]};
344 = comma no type {-> type};
346 = column no type {-> type};
348 /* STATMENTS *****************************************************************/
349 stmtso~withelse~withend {-> expr?}
350 = {block} n stmtsnend {-> stmtsnend.expr}
351 | {emptyblock} n kwend {-> New expr.block([], kwend)}
352 | {emptyoneline} kwend {-> New expr.block([], kwend)}
353 !withend| {oneline} stmt~withelse {-> stmt~withelse.expr}
356 = stmt stmts_tail* {-> New expr.block([stmt.expr, stmts_tail.expr], Null)};
358 = stmt stmts_tail* n {-> New expr.block([stmt.expr, stmts_tail.expr], Null)};
360 = stmt stmts_tail* n kwend {-> New expr.block([stmt.expr, stmts_tail.expr], kwend)};
362 = n stmt {-> stmt.expr};
363 stmt~withelse {-> expr}
364 = {vardecl} vardecl~withelse {-> vardecl~withelse.expr}
365 | {assign} assignment~withelse {-> assignment~withelse.expr}
366 | {return} kwreturn expr_final~withelse? {-> New expr.return(kwreturn, expr_final~withelse.expr)}
367 | {break} kwbreak label? expr_final~withelse? {-> New expr.break(kwbreak, label, expr_final~withelse.expr)}
368 | {abort} kwabort {-> New expr.abort(kwabort)}
369 | {continue} kwcontinue label? expr_final~withelse? {-> New expr.continue(kwcontinue, label, expr_final~withelse.expr)}
370 | {do} do~withelse {-> do~withelse.expr}
371 | {if} if~withelse {-> if~withelse.expr}
372 | {while} while~withelse {-> while~withelse.expr}
373 | {loop} loop~withelse {-> loop~withelse.expr}
374 | {for} for~withelse {-> for~withelse.expr}
375 | {assert} assert~withelse {-> assert~withelse.expr}
376 | {call} recv id args_nopar closure_defs~withelse? {-> New expr.call(recv.expr, id, args_nopar.exprs, [closure_defs~withelse.closure_def])}
377 | {super} qualified? kwsuper args_nopar {-> New expr.super(qualified, kwsuper, args_nopar.exprs)}
378 | {init} recv kwinit args_nopar {-> New expr.init(recv.expr, kwinit, args_nopar.exprs)}
379 | {debug_type_is} kwdebug kwtype type column expr_final~withelse {-> New expr.debug_type(kwdebug, kwtype, expr_final~withelse.expr, type) }
384 closure_defs~withelse {-> closure_def*}
385 = {one} closure_def_last~withelse {-> [closure_def_last~withelse.closure_def]}
386 | closure_def closure_defs~withelse {-> [closure_def, closure_defs~withelse.closure_def]}
389 closure_def_last~withelse {-> closure_def}
390 = bang [id]:closure_id idlist? kwdo stmtso_withend label {-> New closure_def(bang, id, [idlist.id], kwdo, stmtso_withend.expr, label)}
391 | {nolabel} bang [id]:closure_id idlist? kwdo stmtso~withelse {-> New closure_def(bang, id, [idlist.id], kwdo, stmtso~withelse.expr, Null)}
392 | {assign} bang [id]:closure_id idlist? assign no assign_continue~withelse {-> New closure_def(bang, id, [idlist.id], Null, assign_continue~withelse.expr, Null)}
395 closure_def {-> closure_def}
396 = bang [id]:closure_id idlist? kwdo n stmtsn {-> New closure_def(bang, id, [idlist.id], kwdo, stmtsn.expr, Null)}
397 | {empty} bang [id]:closure_id idlist? kwdo n {-> New closure_def(bang, id, [idlist.id], kwdo, Null, Null)}
404 assign_continue~withelse{-> expr}
405 = expr_final~withelse {-> New expr.continue(Null, Null, expr_final~withelse.expr)}
408 vardecl~withelse{-> expr}
409 = kwvar id typing? {-> New expr.vardecl(kwvar, id, typing.type, Null, Null)}
410 | {assign} kwvar id typing? assign no expr_final~withelse {-> New expr.vardecl(kwvar, id, typing.type, assign, expr_final~withelse.expr)}
413 assignment~withelse {-> expr}
414 = {attr} recv attrid assign expr_final~withelse {-> New expr.attr_assign(recv.expr, attrid, assign, expr_final~withelse.expr)}
415 | {call} recv id args assign expr_final~withelse {-> New expr.call_assign(recv.expr, id, args.exprs, assign, expr_final~withelse.expr)}
416 | {bra} expr_atom braargs assign expr_final~withelse {-> New expr.bra_assign(expr_atom.expr, braargs.exprs, assign, expr_final~withelse.expr)}
417 | {attr_re} recv attrid assign_op expr_final~withelse {-> New expr.attr_reassign(recv.expr, attrid, assign_op, expr_final~withelse.expr)}
418 | {call_re} recv id args assign_op expr_final~withelse {-> New expr.call_reassign(recv.expr, id, args.exprs, assign_op, expr_final~withelse.expr)}
419 | {bra_re} expr_atom braargs assign_op expr_final~withelse {-> New expr.bra_reassign(expr_atom.expr, braargs.exprs, assign_op, expr_final~withelse.expr)}
426 do~withelse {-> expr}
427 = kwdo stmtso_withend label {-> New expr.do(kwdo, stmtso_withend.expr, label)}
428 | {nolabel} kwdo stmtso~withelse {-> New expr.do(kwdo, stmtso~withelse.expr, Null)}
431 if~withelse {-> expr}
432 = {onelineelse} kwif no expr [n2]:no kwthen stmt_withelse kwelse stmtso~withelse {-> New expr.if(kwif, expr, stmt_withelse.expr, stmtso~withelse.expr)}
433 !withelse | {oneline} kwif no expr [n2]:no kwthen stmt {-> New expr.if(kwif, expr, stmt.expr, Null)}
434 !withelse | {block} kwif no expr [n2]:no kwthen [n3]:n stmtsn elsepartblock {-> New expr.if(kwif, expr, stmtsn.expr, elsepartblock.expr)}
435 !withelse | {emptyblock} kwif no expr [n2]:no kwthen [n3]:n? elsepartblock {-> New expr.if(kwif, expr, Null, elsepartblock.expr)}
437 elsepartblock {-> expr?}
438 = {else} kwelse stmtso {-> stmtso.expr}
439 | {empty} kwend {-> New expr.block([], kwend)}
442 loop~withelse {-> expr}
443 = kwloop stmtso_withend label {-> New expr.loop(kwloop, stmtso_withend.expr, label)}
444 | {nolabel} kwloop stmtso~withelse {-> New expr.loop(kwloop, stmtso~withelse.expr, Null)}
447 while~withelse {-> expr}
448 = kwwhile no expr [n2]:no kwdo stmtso_withend label {-> New expr.while(kwwhile, expr, kwdo, stmtso_withend.expr, label)}
449 | {nolabel} kwwhile no expr [n2]:no kwdo stmtso~withelse {-> New expr.while(kwwhile, expr, kwdo, stmtso~withelse.expr, Null)}
452 for~withelse {-> expr}
453 = 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)}
454 | {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)}
457 assert~withelse {-> expr}
458 = {else} kwassert assertid? expr_final_withelse kwelse stmtso~withelse {-> New expr.assert(kwassert, assertid.id, expr_final_withelse.expr, stmtso~withelse.expr)}
459 !withelse| {noelse} kwassert assertid? expr_final {-> New expr.assert(kwassert, assertid.id, expr_final.expr, Null)}
464 /* EXPRESSIONS ***************************************************************/
465 expr_final~nopar~withelse~nobra {-> expr}
466 = expr~nopar~nobra {-> expr~nopar~nobra.expr}
467 | {closure_call} recv~nobra id args closure_defs~withelse {-> New expr.call(recv~nobra.expr, id, args.exprs, [closure_defs~withelse.closure_def])}
468 !nobra!nopar | {closure_bra} expr_atom braargs closure_defs~withelse {-> New expr.bra(expr_atom.expr, braargs.exprs, [closure_defs~withelse.closure_def])}
471 expr~nopar~nobra {-> expr}
472 = expr_and~nopar~nobra {-> expr_and~nopar~nobra.expr}
473 | {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)}
476 expr_and~nopar~nobra {-> expr}
477 = expr_not~nopar~nobra {-> expr_not~nopar~nobra.expr}
478 | {:or} expr_and~nopar~nobra :kwor :no expr_not~nopar~nobra
479 | {:and} expr_and~nopar~nobra :kwand :no expr_not~nopar~nobra
480 | {:or_else} expr_and~nopar~nobra :kwor :kwelse :no expr_not~nopar~nobra
483 expr_not~nopar~nobra {-> expr}
484 = expr_eq~nopar~nobra {-> expr_eq~nopar~nobra.expr}
485 | {not} kwnot no expr_not~nopar~nobra {-> New expr.not(kwnot, expr_not~nopar~nobra.expr)}
488 expr_eq~nopar~nobra {-> expr}
489 = expr_add~nopar~nobra {-> expr_add~nopar~nobra.expr}
490 | {:eq} expr_add~nopar~nobra :eq :no [expr2]:expr_add~nopar~nobra
491 | {:ee} expr_add~nopar~nobra :kwis :no [expr2]:expr_add~nopar~nobra
492 | {:ne} expr_add~nopar~nobra :ne :no [expr2]:expr_add~nopar~nobra
493 | {:lt} expr_add~nopar~nobra :lt :no [expr2]:expr_add~nopar~nobra
494 | {:le} expr_add~nopar~nobra :le :no [expr2]:expr_add~nopar~nobra
495 | {:ll} expr_eq~nopar~nobra :ll :no [expr2]:expr_add~nopar~nobra
496 | {:gt} expr_add~nopar~nobra :gt :no [expr2]:expr_add~nopar~nobra
497 | {:ge} expr_add~nopar~nobra :ge :no [expr2]:expr_add~nopar~nobra
498 | {:gg} expr_eq~nopar~nobra :gg :no [expr2]:expr_add~nopar~nobra
499 | {:starship} expr_add~nopar~nobra :starship :no [expr2]:expr_add~nopar~nobra
500 | {:isa} expr_add~nopar~nobra :kwisa :no type~nobra
503 expr_add~nopar~nobra {-> expr}
504 = expr_mul~nopar~nobra {-> expr_mul~nopar~nobra.expr}
505 | {:plus} expr_add~nopar~nobra :plus :no [expr2]:expr_mul~nopar~nobra
506 | {:minus} expr_add~nopar~nobra :minus :no [expr2]:expr_mul~nopar~nobra
509 expr_mul~nopar~nobra {-> expr}
510 = expr_minus~nopar~nobra {-> expr_minus~nopar~nobra.expr}
511 | {:star} expr_mul~nopar~nobra :star :no [expr2]:expr_minus~nopar~nobra
512 | {:slash} expr_mul~nopar~nobra :slash :no [expr2]:expr_minus~nopar~nobra
513 | {:percent} expr_mul~nopar~nobra :percent :no [expr2]:expr_minus~nopar~nobra
516 expr_minus~nopar~nobra {-> expr}
517 = expr_new~nopar~nobra {-> expr_new~nopar~nobra.expr}
518 | {:uminus} minus :no expr_minus~nopar~nobra
519 | {:once} kwonce :no expr_minus~nopar~nobra
522 expr_new~nopar~nobra {-> expr}
523 = expr_atom~nopar~nobra {-> expr_atom~nopar~nobra.expr}
524 | {new} kwnew no type~nobra args {-> New expr.new(kwnew, type~nobra.type, Null, args.exprs)}
525 | {isset_attr} kwisset recv~nopar~nobra attrid {-> New expr.isset_attr(kwisset, recv~nopar~nobra.expr, attrid)}
528 expr_atom~nopar~nobra {-> expr}
529 = {attr} recv~nopar~nobra attrid {-> New expr.attr(recv~nopar~nobra.expr, attrid)}
530 | {call} recv~nopar~nobra id args {-> New expr.call(recv~nopar~nobra.expr, id, args.exprs, [])}
531 | {super} qualified? kwsuper args {-> New expr.super(qualified, kwsuper, args.exprs)}
532 | {init} recv~nopar~nobra kwinit args {-> New expr.init(recv~nopar~nobra.expr, kwinit, args.exprs)}
533 !nobra | {bra} expr_atom~nopar braargs {-> New expr.bra(expr_atom~nopar.expr, braargs.exprs, [])}
534 | {new} kwnew no type~nobra dot [n2]:no id args {-> New expr.new(kwnew, type~nobra.type, id, args.exprs)}
535 // !nopar to unambiguise 'foo[5].bar' between '(foo[5]).bar' and 'foo([5].bar),
536 !nobra!nopar | {range} obra no expr [n2]:no dotdot [n3]:no [expr2]:expr_nobra [n4]:no cbra {-> New expr.crange(obra, expr, expr2.expr, cbra)}
537 !nobra!nopar | {orange} obra no expr [n2]:no dotdot [n3]:no [expr2]:expr_nobra [n4]:no [cbra]:obra {-> New expr.orange(obra, expr, expr2.expr, cbra)}
538 !nobra!nopar | {array} braargs {-> New expr.array(braargs.exprs)}
547 | {superstring} superstring {-> superstring.expr}
548 !nopar | {par} opar expr cpar {-> New expr.par(opar, expr, cpar)}
549 | {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)}
550 | {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)}
553 superstring {-> expr}
554 = superstring_start superstring_middle* superstring_end {-> New expr.superstring([superstring_start.expr, superstring_middle.expr, superstring_end.expr])};
555 superstring_start {-> expr*}
556 = start_string_p no expr [n2]:no {-> [start_string_p.expr, expr]};
557 start_string_p {-> expr}
558 = start_string {-> New expr.start_string(start_string)};
559 superstring_middle {-> expr*}
560 = mid_string_p no expr [n2]:no {-> [mid_string_p.expr, expr]};
561 mid_string_p {-> expr}
562 = mid_string {-> New expr.mid_string(mid_string)};
563 superstring_end {-> expr}
564 = end_string {-> New expr.end_string(end_string)};
566 /* MISC **********************************************************************/
568 recv~nopar~nobra {-> expr}
569 = expr_atom~nopar~nobra dot no {-> expr_atom~nopar~nobra.expr}
570 | {implicit} {-> New expr.implicit_self()}
574 = opar no expr_list cpar {-> New exprs.par(opar, [expr_list.expr], cpar) }
575 | {emptypar} opar no cpar {-> New exprs.par(opar, [], cpar) }
576 | {empty} {-> New exprs.list([])}
578 args_nopar {-> exprs}
579 = opar no expr_list cpar {-> New exprs.par(opar, [expr_list.expr], cpar) }
580 | {onearg} expr_nopar {-> New exprs.list([expr_nopar.expr])}
581 | {emptypar} opar no cpar {-> New exprs.par(opar, [], cpar) }
582 | {empty} {-> New exprs.list([])}
585 = obra no expr_list cbra {-> New exprs.bra(obra, [expr_list.expr], cbra)};
587 = expr [n2]:no expr_tail* {-> [expr, expr_tail.expr]};
589 = comma no expr [n2]:no {-> expr};
591 = opar idlist_nopar cpar {-> [idlist_nopar.id]}
592 | {nopar} idlist_nopar {-> [idlist_nopar.id]}
594 idlist_nopar {-> id*}
595 = {single} id {-> [id]}
596 | {more} idlist_nopar no comma [n2]:no id {-> [idlist_nopar.id, id]}
599 module_name {-> module_name}
600 = {mod} modquad* id {-> New module_name(Null, [modquad.id], id)}
601 | {root} quad no modquad* id {-> New module_name(quad, [modquad.id], id)}
605 = {cla} modquad* classquad {-> New qualified([modquad.id], classquad.classid)}
606 | {mod} modquad+ {-> New qualified([modquad.id], Null)}
609 = id quad no {-> id};
610 classquad {-> classid}
611 = classid quad no {-> classid};
613 n1 = {a} comment | {b} eol;
615 = {a} n2? comment+ {-> New doc([comment])}
624 = {a} n2? comment+ eol+
628 /*****************************************************************************/
630 /*****************************************************************************/
632 module = moduledecl? [imports]:import* [extern_code_blocks]:extern_code_block* [classdefs]:classdef*;
635 = doc? kwmodule [name]:module_name;
637 import = {std} visibility kwimport [name]:module_name
638 | {no} visibility kwimport kwend
643 | {private} kwprivate
644 | {protected} kwprotected
645 | {intrude} kwintrude
648 classdef= {std} doc? kwredef? visibility classkind [id]:classid? [formaldefs]:formaldef* extern_code_block? [superclasses]:superclass* [propdefs]:propdef* kwend
649 | {top} [propdefs]:propdef*
650 | {main} [propdefs]:propdef*
654 | {abstract} kwabstract kwclass
655 | {interface} kwinterface
657 | {extern} kwextern kwclass?
659 formaldef = [id]:classid type?;
660 superclass = kwsuper type;
663 propdef = {attr} doc? [readable]:able? [writable]:able? kwredef? visibility kwvar [id]:attrid? [id2]:id? type? expr?
664 | {meth} doc? kwredef? visibility methid signature
665 | {deferred_meth} doc? kwredef? visibility kwmeth methid signature
666 | {intern_meth} doc? kwredef? visibility kwmeth methid signature
667 | {extern_meth} doc? kwredef? visibility kwmeth methid signature [extern]:string? extern_calls? extern_code_block?
668 | {concrete_meth} doc? kwredef? visibility kwmeth methid signature [block]:expr?
669 | {concrete_init} doc? kwredef? visibility kwinit methid? signature [block]:expr?
670 | {extern_init} doc? kwredef? visibility kwnew methid? signature [extern]:string? extern_calls? extern_code_block?
671 | {main_meth} kwredef? [block]:expr?
672 | {type} doc? kwredef? visibility kwtype [id]:classid type
675 able = {read} kwredef? kwreadable
676 | {write} kwredef? visibility? kwwritable
679 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 | {ll} ll | {gg} gg | {bra} obra cbra | {starship} starship | {assign} id assign | {braassign} obra cbra assign;
681 signature = opar? [params]:param* cpar? type? [closure_decls]:closure_decl*;
683 param = id type? dotdotdot?
686 closure_decl = kwbreak? bang id signature expr?
689 type = kwnullable? [id]:classid [types]:type*;
693 expr = {block} expr* kwend?
694 | {vardecl} kwvar id type? assign? expr?
695 | {return} kwreturn? expr?
696 | {break} kwbreak label? expr?
698 | {continue} kwcontinue? label? expr?
699 | {do} kwdo [block]:expr? label?
700 | {if} kwif expr [then]:expr? [else]:expr?
701 | {ifexpr} kwif expr kwthen [then]:expr kwelse [else]:expr
702 | {while} kwwhile expr kwdo [block]:expr? label?
703 | {loop} kwloop [block]:expr? label?
704 | {for} kwfor [ids]:id* expr kwdo [block]:expr? label?
705 | {assert} kwassert id? expr [else]:expr?
708 | {binop} expr [expr2]:expr
709 | {or} expr [expr2]:expr
710 | {and} expr [expr2]:expr
711 | {or_else} expr [expr2]:expr
713 | {eq} expr [expr2]:expr
714 | {ee} expr [expr2]:expr
715 | {ne} expr [expr2]:expr
716 | {lt} expr [expr2]:expr
717 | {le} expr [expr2]:expr
718 | {ll} expr [expr2]:expr
719 | {gt} expr [expr2]:expr
720 | {ge} expr [expr2]:expr
721 | {gg} expr [expr2]:expr
723 | {plus} expr [expr2]:expr
724 | {minus} expr [expr2]:expr
725 | {starship} expr [expr2]:expr
726 | {star} expr [expr2]:expr
727 | {slash} expr [expr2]:expr
728 | {percent} expr [expr2]:expr
729 | {uminus} minus expr
730 | {new} kwnew type id? [args]:exprs
731 | {attr} expr [id]:attrid
732 | {attr_assign} expr [id]:attrid assign [value]:expr
733 | {attr_reassign} expr [id]:attrid assign_op [value]:expr
734 | {call} expr id [args]:exprs [closure_defs]:closure_def*
735 | {call_assign} expr id [args]:exprs assign [value]:expr
736 | {call_reassign} expr id [args]:exprs assign_op [value]:expr
737 | {super} qualified? kwsuper [args]:exprs
738 | {init} expr kwinit [args]:exprs
739 | {bra} expr [args]:exprs [closure_defs]:closure_def*
740 | {bra_assign} expr [args]:exprs assign [value]:expr
741 | {bra_reassign} expr [args]:exprs assign_op [value]:expr
742 | {closure_call} id [args]:exprs [closure_defs]:closure_def*
744 | {var_assign} id assign [value]:expr
745 | {var_reassign} id assign_op [value]:expr
746 | {range} expr [expr2]:expr
747 | {crange} obra expr [expr2]:expr cbra
748 | {orange} obra expr [expr2]:expr [cbra]:obra
749 | {array} [exprs]:exprs
759 | {start_string} [string]:start_string
760 | {mid_string} [string]:mid_string
761 | {end_string} [string]:end_string
762 | {superstring} [exprs]:expr*
763 | {par} opar expr cpar
764 | {as_cast} expr kwas opar type cpar
765 | {as_notnull} expr kwas opar kwnot kwnull cpar
766 | {isset_attr} kwisset expr [id]:attrid
767 | {debug_type} kwdebug kwtype expr type
770 = {list} [exprs]:expr*
771 | {par} opar [exprs]:expr* cpar
772 | {bra} obra [exprs]:expr* cbra
780 = bang [id]:closure_id [ids]:id* kwdo? expr? label?
787 module_name = quad? [path]:id* id;
788 extern_calls = kwimport [extern_calls]:extern_call*
792 | {local_prop} methid
793 | {full_prop} classid quad? methid
794 | {init_prop} classid
795 | {cast_as} [from_type]:type kwas [to_type]:type
796 | {as_nullable} type kwas kwnullable
797 | {as_not_nullable} type kwas kwnot kwnullable
799 in_language = kwin string;
800 extern_code_block = in_language? extern_code_segment;
802 qualified = id* classid? ;
806 /*****************************************************************************/