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]];
36 eol_helper = cr lf | cr | lf; // This takes care of different platforms
38 // characers inside strings and super-strings (atomaton powaa)
40 = [any - [['"' + '{'] + '\']]
50 sstr_body = sstr_char*;
52 long_str_char = str_char | cr | lf;
57 | '"' '"' long_str_char
59 | '{' '{' long_str_char
62 long_str_body = long_str_part*;
64 long_sstr_char = sstr_char | cr | lf;
68 | ''' ''' long_sstr_char
71 long_sstr_body = long_sstr_part*;
78 extern_code_body = extern_code_char*;
80 /*****************************************************************************/
82 /*****************************************************************************/
86 /*****************************************************************************/
88 /*****************************************************************************/
93 comment = '#' any* eol_helper?;
95 kwmodule = 'package'|'module';
98 kwabstract = 'abstract';
99 kwinterface = 'interface';
100 kwenum = 'universal'|'enum';
108 kwreadable = 'readable';
109 kwwritable = 'writable';
113 kwprotected = 'protected';
114 kwprivate = 'private';
115 kwintrude = 'intrude';
127 kwcontinue = 'continue';
140 kwnullable = 'nullable';
143 kwdebug = '__debug__';
174 classid = uppercase letter*;
175 id = lowercase letter*;
176 attrid = '_' lowercase letter*;
179 float = digit* '.' digit+;
180 string = '"' str_body '"' | '"' '"' '"' long_str_body '"' '"' '"' | ''' ''' ''' long_sstr_body ''' ''' ''';
181 start_string = '"' str_body '{' | '"' '"' '"' long_str_body '{' '{' '{';
182 mid_string = '}' str_body '{' | '}' '}' '}' long_str_body '{' '{' '{';
183 end_string = '}' str_body '"' | '}' '}' '}' long_str_body '"' '"' '"';
184 char = (''' [[any - '''] - '\'] ''') | (''' '\' any ''');
185 bad_string = ('"'|'}') str_body | '"' '"' '"' long_str_body | ''' ''' ''' long_sstr_body;
186 bad_char = ''' '\'? any;
188 extern_code_segment = '`' '{' extern_code_body '`' '}';
190 /*****************************************************************************/
192 /*****************************************************************************/
196 /*****************************************************************************/
198 /*****************************************************************************/
200 /* MODULES *******************************************************************/
202 = 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])};
205 = [doc]:no kwmodule no module_name [n2]:n1 {-> New moduledecl(doc.doc, kwmodule, module_name)};
208 = {std} [doc]:no visibility kwimport no module_name [n2]:n1 {-> New import.std(visibility, kwimport, module_name)}
209 | {no} [doc]:no visibility kwimport no kwend [n2]:n1 {-> New import.no(visibility, kwimport, kwend)}
212 implicit_top_class {-> classdef}
213 = propdefs_toplevel+ {-> New classdef.top([propdefs_toplevel.propdef])};
215 implicit_main_class {-> classdef?}
216 = implicit_main_meth {-> New classdef.main([implicit_main_meth.propdef])}
219 implicit_main_meth {-> propdef}
220 = [doc]:no stmts {-> New propdef.main_meth(Null, stmts.expr)}
221 | {n} [doc]:no stmtsn {-> New propdef.main_meth(Null, stmtsn.expr)}
224 /* CLASSES *******************************************************************/
226 = [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)};
228 = kwredef? {-> kwredef};
231 | {abstract} kwabstract kwclass
232 | {interface} kwinterface
234 | {extern} kwextern kwclass?
237 formaldefs {-> formaldef*}
238 = obra no formaldef formaldefs_tail* [n2]:no cbra {-> [formaldef, formaldefs_tail.formaldef]};
239 formaldefs_tail {-> formaldef}
240 = comma no formaldef {-> formaldef};
242 = classid typing? {-> New formaldef(classid, typing.type)};
244 superclass {-> superclass}
245 = {super} no kwsuper [n2]:no type {-> New superclass(kwsuper, type)}
248 propdefs~toplevel {-> propdef}
249 = propdef~toplevel n1 {-> propdef~toplevel.propdef}
251 propdef~toplevel {-> propdef}
252 = {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)}
253 | {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)}
254 !toplevel| {deferred} [doc]:no redef visibility kwmeth methid signature kwis kwabstract {-> New propdef.deferred_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature)}
255 !toplevel| {intern} [doc]:no redef visibility kwmeth methid signature kwis kwintern {-> New propdef.intern_meth(doc.doc, redef.kwredef, visibility, kwmeth, methid, signature.signature)}
256 | {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)}
257 | {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)}
258 !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)}
259 !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)}
260 !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)}
261 !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)}
262 !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)}
263 !toplevel| {type} [doc]:no redef visibility kwtype classid typing {-> New propdef.type(doc.doc, redef.kwredef, visibility, kwtype, classid, typing.type)}
264 !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)}
265 !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)}
268 = redef kwreadable {-> New able.read(redef.kwredef, kwreadable)}
271 = redef kwwritable {-> New able.write(redef.kwredef, Null, kwwritable)}
274 = redef visibility kwwritable {-> New able.write(redef.kwredef, visibility, kwwritable)}
278 = {public} {-> New visibility.public()}
279 | {private} kwprivate no {-> New visibility.private(kwprivate)}
280 | {protected} kwprotected no {-> New visibility.protected(kwprotected)}
281 | {intrude} kwintrude no {-> New visibility.intrude(kwintrude)}
285 = {id} id {-> New methid.id(id)}
286 | {plus} plus {-> New methid.plus(plus)}
287 | {minus} minus {-> New methid.minus(minus)}
288 | {star} star {-> New methid.star(star)}
289 | {slash} slash {-> New methid.slash(slash)}
290 | {percent} percent {-> New methid.percent(percent)}
291 | {eq} eq {-> New methid.eq(eq)}
292 | {ne} ne {-> New methid.ne(ne)}
293 | {le} le {-> New methid.le(le)}
294 | {ge} ge {-> New methid.ge(ge)}
295 | {lt} lt {-> New methid.lt(lt)}
296 | {gt} gt {-> New methid.gt(gt)}
297 | {ll} ll {-> New methid.ll(ll)}
298 | {gg} gg {-> New methid.gg(gg)}
299 | {bra} obra cbra {-> New methid.bra(obra, cbra)}
300 | {starship} starship {-> New methid.starship(starship)}
301 | {assign} id assign {-> New methid.assign(id, assign)}
302 | {braassign} obra cbra assign {-> New methid.braassign(obra, cbra, assign)}
305 signature~withret {-> signature}
306 = opar no params? cpar typing [no2]:no closure_decls? {-> New signature(opar, [params.param], cpar, typing.type, [closure_decls.closure_decl])}
307 !withret| {noret} opar no params? cpar [no2]:no closure_decls? {-> New signature(opar, [params.param], cpar, Null, [closure_decls.closure_decl])}
308 | {nopar} typing no closure_decls? {-> New signature(Null, [], Null, typing.type, [closure_decls.closure_decl])}
309 !withret| {noparnoret} no closure_decls? {-> New signature(Null, [], Null, Null, [closure_decls.closure_decl])}
312 signature_noclosures {-> signature}
313 = opar no params? cpar typing? {-> New signature(opar, [params.param], cpar, typing.type, [])}
314 | {nopar} typing? {-> New signature(Null, [], Null, typing.type, [])}
318 = param params_tail* [n2]:no {-> [param, params_tail.param] }
320 params_tail {-> param}
321 = comma no param {-> param};
323 = {untyped} id {-> New param(id, Null, Null)}
324 | id typing dotdotdot? {-> New param(id, typing.type, dotdotdot)}
327 closure_decls {->closure_decl*}
328 = closure_decl+ {-> [closure_decl]};
330 = kwbreak? bang id signature_noclosures n {-> New closure_decl(kwbreak, bang, id, signature_noclosures.signature, Null)}
331 | {optionnal} kwbreak? bang id signature_noclosures kwdo stmtso n {-> New closure_decl(kwbreak, bang, id, signature_noclosures.signature, stmtso.expr)}
332 | {assign} kwbreak? bang id signature_noclosures assign no assign_continue n {-> New closure_decl(kwbreak, bang, id, signature_noclosures.signature, assign_continue.expr)}
335 assign_return{-> expr}
336 = expr_final {-> New expr.return(Null, expr_final.expr)}
339 extern_calls {-> extern_calls}
340 = 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} methid {-> New extern_call.local_prop( methid )}
351 | {full} classid quad methid {-> New extern_call.full_prop( classid, quad, methid )}
352 | {init} classid {-> New extern_call.init_prop( classid )}
354 extern_call_cast {-> extern_call}
355 = {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)}
356 | {as_nullable} type kwas [n2]:no kwnullable {-> New extern_call.as_nullable( type, kwas, kwnullable)}
357 | {as_not_nullable} type kwas [n2]:no kwnot [n3]:no kwnullable {-> New extern_call.as_not_nullable( type, kwas, kwnot, kwnullable)}
360 in_language = kwin string;
361 extern_code_block = in_language? extern_code_segment;
362 extern_code_body {-> extern_code_block} = no extern_code_block {-> extern_code_block};
364 /* TYPES *********************************************************************/
366 = {simple} kwnullable? classid {-> New type(kwnullable, classid, [])}
367 !nobra | {generic} kwnullable? classid obra no types [n2]:no cbra {-> New type(kwnullable, classid, [types.type])}
370 = type types_tail* {-> [type, types_tail.type]};
372 = comma no type {-> type};
374 = column no type {-> type};
376 /* STATMENTS *****************************************************************/
377 stmtso~withelse~withend {-> expr?}
378 = {block} n stmtsnend {-> stmtsnend.expr}
379 | {emptyblock} n kwend {-> New expr.block([], kwend)}
380 | {emptyoneline} kwend {-> New expr.block([], kwend)}
381 !withend| {oneline} stmt~withelse {-> stmt~withelse.expr}
384 = stmt stmts_tail* {-> New expr.block([stmt.expr, stmts_tail.expr], Null)};
386 = stmt stmts_tail* n {-> New expr.block([stmt.expr, stmts_tail.expr], Null)};
388 = stmt stmts_tail* n kwend {-> New expr.block([stmt.expr, stmts_tail.expr], kwend)};
390 = n stmt {-> stmt.expr};
391 stmt~withelse {-> expr}
392 = {vardecl} vardecl~withelse {-> vardecl~withelse.expr}
393 | {assign} assignment~withelse {-> assignment~withelse.expr}
394 | {return} kwreturn expr_final~withelse? {-> New expr.return(kwreturn, expr_final~withelse.expr)}
395 | {break} kwbreak label? expr_final~withelse? {-> New expr.break(kwbreak, label, expr_final~withelse.expr)}
396 | {abort} kwabort {-> New expr.abort(kwabort)}
397 | {continue} kwcontinue label? expr_final~withelse? {-> New expr.continue(kwcontinue, label, expr_final~withelse.expr)}
398 | {do} do~withelse {-> do~withelse.expr}
399 | {if} if~withelse {-> if~withelse.expr}
400 | {while} while~withelse {-> while~withelse.expr}
401 | {loop} loop~withelse {-> loop~withelse.expr}
402 | {for} for~withelse {-> for~withelse.expr}
403 | {assert} assert~withelse {-> assert~withelse.expr}
404 | {call} recv id args_nopar closure_defs~withelse? {-> New expr.call(recv.expr, id, args_nopar.exprs, [closure_defs~withelse.closure_def])}
405 | {super} qualified? kwsuper args_nopar {-> New expr.super(qualified, kwsuper, args_nopar.exprs)}
406 | {init} recv kwinit args_nopar {-> New expr.init(recv.expr, kwinit, args_nopar.exprs)}
407 | {debug_type_is} kwdebug kwtype type column expr_final~withelse {-> New expr.debug_type(kwdebug, kwtype, expr_final~withelse.expr, type) }
412 closure_defs~withelse {-> closure_def*}
413 = {one} closure_def_last~withelse {-> [closure_def_last~withelse.closure_def]}
414 | closure_def closure_defs~withelse {-> [closure_def, closure_defs~withelse.closure_def]}
417 closure_def_last~withelse {-> closure_def}
418 = bang [id]:closure_id idlist? kwdo stmtso_withend label {-> New closure_def(bang, id, [idlist.id], kwdo, stmtso_withend.expr, label)}
419 | {nolabel} bang [id]:closure_id idlist? kwdo stmtso~withelse {-> New closure_def(bang, id, [idlist.id], kwdo, stmtso~withelse.expr, Null)}
420 | {assign} bang [id]:closure_id idlist? assign no assign_continue~withelse {-> New closure_def(bang, id, [idlist.id], Null, assign_continue~withelse.expr, Null)}
423 closure_def {-> closure_def}
424 = bang [id]:closure_id idlist? kwdo n stmtsn {-> New closure_def(bang, id, [idlist.id], kwdo, stmtsn.expr, Null)}
425 | {empty} bang [id]:closure_id idlist? kwdo n {-> New closure_def(bang, id, [idlist.id], kwdo, Null, Null)}
432 assign_continue~withelse{-> expr}
433 = expr_final~withelse {-> New expr.continue(Null, Null, expr_final~withelse.expr)}
436 vardecl~withelse{-> expr}
437 = kwvar id typing? {-> New expr.vardecl(kwvar, id, typing.type, Null, Null)}
438 | {assign} kwvar id typing? assign no expr_final~withelse {-> New expr.vardecl(kwvar, id, typing.type, assign, expr_final~withelse.expr)}
441 assignment~withelse {-> expr}
442 = {attr} recv attrid assign expr_final~withelse {-> New expr.attr_assign(recv.expr, attrid, assign, expr_final~withelse.expr)}
443 | {call} recv id args assign expr_final~withelse {-> New expr.call_assign(recv.expr, id, args.exprs, assign, expr_final~withelse.expr)}
444 | {bra} expr_atom braargs assign expr_final~withelse {-> New expr.bra_assign(expr_atom.expr, braargs.exprs, assign, expr_final~withelse.expr)}
445 | {attr_re} recv attrid assign_op expr_final~withelse {-> New expr.attr_reassign(recv.expr, attrid, assign_op, expr_final~withelse.expr)}
446 | {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)}
447 | {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)}
454 do~withelse {-> expr}
455 = kwdo stmtso_withend label {-> New expr.do(kwdo, stmtso_withend.expr, label)}
456 | {nolabel} kwdo stmtso~withelse {-> New expr.do(kwdo, stmtso~withelse.expr, Null)}
459 if~withelse {-> expr}
460 = {onelineelse} kwif no expr [n2]:no kwthen stmt_withelse kwelse stmtso~withelse {-> New expr.if(kwif, expr, stmt_withelse.expr, stmtso~withelse.expr)}
461 !withelse | {oneline} kwif no expr [n2]:no kwthen stmt {-> New expr.if(kwif, expr, stmt.expr, Null)}
462 !withelse | {block} kwif no expr [n2]:no kwthen [n3]:n stmtsn elsepartblock {-> New expr.if(kwif, expr, stmtsn.expr, elsepartblock.expr)}
463 !withelse | {emptyblock} kwif no expr [n2]:no kwthen [n3]:n? elsepartblock {-> New expr.if(kwif, expr, Null, elsepartblock.expr)}
465 elsepartblock {-> expr?}
466 = {else} kwelse stmtso {-> stmtso.expr}
467 | {empty} kwend {-> New expr.block([], kwend)}
470 loop~withelse {-> expr}
471 = kwloop stmtso_withend label {-> New expr.loop(kwloop, stmtso_withend.expr, label)}
472 | {nolabel} kwloop stmtso~withelse {-> New expr.loop(kwloop, stmtso~withelse.expr, Null)}
475 while~withelse {-> expr}
476 = kwwhile no expr [n2]:no kwdo stmtso_withend label {-> New expr.while(kwwhile, expr, kwdo, stmtso_withend.expr, label)}
477 | {nolabel} kwwhile no expr [n2]:no kwdo stmtso~withelse {-> New expr.while(kwwhile, expr, kwdo, stmtso~withelse.expr, Null)}
480 for~withelse {-> expr}
481 = 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)}
482 | {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)}
485 assert~withelse {-> expr}
486 = {else} kwassert assertid? expr_final_withelse kwelse stmtso~withelse {-> New expr.assert(kwassert, assertid.id, expr_final_withelse.expr, stmtso~withelse.expr)}
487 !withelse| {noelse} kwassert assertid? expr_final {-> New expr.assert(kwassert, assertid.id, expr_final.expr, Null)}
492 /* EXPRESSIONS ***************************************************************/
493 expr_final~nopar~withelse~nobra {-> expr}
494 = expr~nopar~nobra {-> expr~nopar~nobra.expr}
495 | {closure_call} recv~nobra id args closure_defs~withelse {-> New expr.call(recv~nobra.expr, id, args.exprs, [closure_defs~withelse.closure_def])}
496 !nobra!nopar | {closure_bra} expr_atom braargs closure_defs~withelse {-> New expr.bra(expr_atom.expr, braargs.exprs, [closure_defs~withelse.closure_def])}
499 expr~nopar~nobra {-> expr}
500 = expr_and~nopar~nobra {-> expr_and~nopar~nobra.expr}
501 | {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)}
504 expr_and~nopar~nobra {-> expr}
505 = expr_not~nopar~nobra {-> expr_not~nopar~nobra.expr}
506 | {:or} expr_and~nopar~nobra :kwor :no expr_not~nopar~nobra
507 | {:and} expr_and~nopar~nobra :kwand :no expr_not~nopar~nobra
508 | {:or_else} expr_and~nopar~nobra :kwor :kwelse :no expr_not~nopar~nobra
511 expr_not~nopar~nobra {-> expr}
512 = expr_eq~nopar~nobra {-> expr_eq~nopar~nobra.expr}
513 | {not} kwnot no expr_not~nopar~nobra {-> New expr.not(kwnot, expr_not~nopar~nobra.expr)}
516 expr_eq~nopar~nobra {-> expr}
517 = expr_add~nopar~nobra {-> expr_add~nopar~nobra.expr}
518 | {:eq} expr_add~nopar~nobra :eq :no [expr2]:expr_add~nopar~nobra
519 | {:ee} expr_add~nopar~nobra :kwis :no [expr2]:expr_add~nopar~nobra
520 | {:ne} expr_add~nopar~nobra :ne :no [expr2]:expr_add~nopar~nobra
521 | {:lt} expr_add~nopar~nobra :lt :no [expr2]:expr_add~nopar~nobra
522 | {:le} expr_add~nopar~nobra :le :no [expr2]:expr_add~nopar~nobra
523 | {:ll} expr_eq~nopar~nobra :ll :no [expr2]:expr_add~nopar~nobra
524 | {:gt} expr_add~nopar~nobra :gt :no [expr2]:expr_add~nopar~nobra
525 | {:ge} expr_add~nopar~nobra :ge :no [expr2]:expr_add~nopar~nobra
526 | {:gg} expr_eq~nopar~nobra :gg :no [expr2]:expr_add~nopar~nobra
527 | {:starship} expr_add~nopar~nobra :starship :no [expr2]:expr_add~nopar~nobra
528 | {:isa} expr_add~nopar~nobra :kwisa :no type~nobra
531 expr_add~nopar~nobra {-> expr}
532 = expr_mul~nopar~nobra {-> expr_mul~nopar~nobra.expr}
533 | {:plus} expr_add~nopar~nobra :plus :no [expr2]:expr_mul~nopar~nobra
534 | {:minus} expr_add~nopar~nobra :minus :no [expr2]:expr_mul~nopar~nobra
537 expr_mul~nopar~nobra {-> expr}
538 = expr_minus~nopar~nobra {-> expr_minus~nopar~nobra.expr}
539 | {:star} expr_mul~nopar~nobra :star :no [expr2]:expr_minus~nopar~nobra
540 | {:slash} expr_mul~nopar~nobra :slash :no [expr2]:expr_minus~nopar~nobra
541 | {:percent} expr_mul~nopar~nobra :percent :no [expr2]:expr_minus~nopar~nobra
544 expr_minus~nopar~nobra {-> expr}
545 = expr_new~nopar~nobra {-> expr_new~nopar~nobra.expr}
546 | {:uminus} minus :no expr_minus~nopar~nobra
547 | {:once} kwonce :no expr_minus~nopar~nobra
550 expr_new~nopar~nobra {-> expr}
551 = expr_atom~nopar~nobra {-> expr_atom~nopar~nobra.expr}
552 | {new} kwnew no type~nobra args {-> New expr.new(kwnew, type~nobra.type, Null, args.exprs)}
553 | {isset_attr} kwisset recv~nopar~nobra attrid {-> New expr.isset_attr(kwisset, recv~nopar~nobra.expr, attrid)}
556 expr_atom~nopar~nobra {-> expr}
557 = {attr} recv~nopar~nobra attrid {-> New expr.attr(recv~nopar~nobra.expr, attrid)}
558 | {call} recv~nopar~nobra id args {-> New expr.call(recv~nopar~nobra.expr, id, args.exprs, [])}
559 | {super} qualified? kwsuper args {-> New expr.super(qualified, kwsuper, args.exprs)}
560 | {init} recv~nopar~nobra kwinit args {-> New expr.init(recv~nopar~nobra.expr, kwinit, args.exprs)}
561 !nobra | {bra} expr_atom~nopar braargs {-> New expr.bra(expr_atom~nopar.expr, braargs.exprs, [])}
562 | {new} kwnew no type~nobra dot [n2]:no id args {-> New expr.new(kwnew, type~nobra.type, id, args.exprs)}
563 // !nopar to unambiguise 'foo[5].bar' between '(foo[5]).bar' and 'foo([5].bar),
564 !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)}
565 !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)}
566 !nobra!nopar | {array} braargs {-> New expr.array(braargs.exprs)}
575 | {superstring} superstring {-> superstring.expr}
576 !nopar | {par} opar expr cpar {-> New expr.par(opar, expr, cpar)}
577 | {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)}
578 | {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)}
581 superstring {-> expr}
582 = superstring_start superstring_middle* superstring_end {-> New expr.superstring([superstring_start.expr, superstring_middle.expr, superstring_end.expr])};
583 superstring_start {-> expr*}
584 = start_string_p no expr [n2]:no {-> [start_string_p.expr, expr]};
585 start_string_p {-> expr}
586 = start_string {-> New expr.start_string(start_string)};
587 superstring_middle {-> expr*}
588 = mid_string_p no expr [n2]:no {-> [mid_string_p.expr, expr]};
589 mid_string_p {-> expr}
590 = mid_string {-> New expr.mid_string(mid_string)};
591 superstring_end {-> expr}
592 = end_string {-> New expr.end_string(end_string)};
594 /* MISC **********************************************************************/
596 recv~nopar~nobra {-> expr}
597 = expr_atom~nopar~nobra dot no {-> expr_atom~nopar~nobra.expr}
598 | {implicit} {-> New expr.implicit_self()}
602 = opar no expr_list cpar {-> New exprs.par(opar, [expr_list.expr], cpar) }
603 | {emptypar} opar no cpar {-> New exprs.par(opar, [], cpar) }
604 | {empty} {-> New exprs.list([])}
606 args_nopar {-> exprs}
607 = opar no expr_list cpar {-> New exprs.par(opar, [expr_list.expr], cpar) }
608 | {onearg} expr_nopar {-> New exprs.list([expr_nopar.expr])}
609 | {emptypar} opar no cpar {-> New exprs.par(opar, [], cpar) }
610 | {empty} {-> New exprs.list([])}
613 = obra no expr_list cbra {-> New exprs.bra(obra, [expr_list.expr], cbra)};
615 = expr [n2]:no expr_tail* {-> [expr, expr_tail.expr]};
617 = comma no expr [n2]:no {-> expr};
619 = opar idlist_nopar cpar {-> [idlist_nopar.id]}
620 | {nopar} idlist_nopar {-> [idlist_nopar.id]}
622 idlist_nopar {-> id*}
623 = {single} id {-> [id]}
624 | {more} idlist_nopar no comma [n2]:no id {-> [idlist_nopar.id, id]}
627 module_name {-> module_name}
628 = {mod} modquad* id {-> New module_name(Null, [modquad.id], id)}
629 | {root} quad no modquad* id {-> New module_name(quad, [modquad.id], id)}
633 = {cla} modquad* classquad {-> New qualified([modquad.id], classquad.classid)}
634 | {mod} modquad+ {-> New qualified([modquad.id], Null)}
637 = id quad no {-> id};
638 classquad {-> classid}
639 = classid quad no {-> classid};
641 n1 = {a} comment | {b} eol;
643 = {a} n2? comment+ {-> New doc([comment])}
652 = {a} n2? comment+ eol+
656 /*****************************************************************************/
658 /*****************************************************************************/
660 module = moduledecl? [imports]:import* [extern_code_blocks]:extern_code_block* [classdefs]:classdef*;
663 = doc? kwmodule [name]:module_name;
665 import = {std} visibility kwimport [name]:module_name
666 | {no} visibility kwimport kwend
671 | {private} kwprivate
672 | {protected} kwprotected
673 | {intrude} kwintrude
676 classdef= {std} doc? kwredef? visibility classkind [id]:classid? [formaldefs]:formaldef* extern_code_block? [superclasses]:superclass* [propdefs]:propdef* kwend
677 | {top} [propdefs]:propdef*
678 | {main} [propdefs]:propdef*
682 | {abstract} kwabstract kwclass
683 | {interface} kwinterface
685 | {extern} kwextern kwclass?
687 formaldef = [id]:classid type?;
688 superclass = kwsuper type;
691 propdef = {attr} doc? [readable]:able? [writable]:able? kwredef? visibility kwvar [id]:attrid? [id2]:id? type? expr?
692 | {meth} doc? kwredef? visibility methid signature
693 | {deferred_meth} doc? kwredef? visibility kwmeth methid signature
694 | {intern_meth} doc? kwredef? visibility kwmeth methid signature
695 | {extern_meth} doc? kwredef? visibility kwmeth methid signature [extern]:string? extern_calls? extern_code_block?
696 | {concrete_meth} doc? kwredef? visibility kwmeth methid signature [block]:expr?
697 | {concrete_init} doc? kwredef? visibility kwinit methid? signature [block]:expr?
698 | {extern_init} doc? kwredef? visibility kwnew methid? signature [extern]:string? extern_calls? extern_code_block?
699 | {main_meth} kwredef? [block]:expr?
700 | {type} doc? kwredef? visibility kwtype [id]:classid type
703 able = {read} kwredef? kwreadable
704 | {write} kwredef? visibility? kwwritable
707 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;
709 signature = opar? [params]:param* cpar? type? [closure_decls]:closure_decl*;
711 param = id type? dotdotdot?
714 closure_decl = kwbreak? bang id signature expr?
717 type = kwnullable? [id]:classid [types]:type*;
721 expr = {block} expr* kwend?
722 | {vardecl} kwvar id type? assign? expr?
723 | {return} kwreturn? expr?
724 | {break} kwbreak label? expr?
726 | {continue} kwcontinue? label? expr?
727 | {do} kwdo [block]:expr? label?
728 | {if} kwif expr [then]:expr? [else]:expr?
729 | {ifexpr} kwif expr kwthen [then]:expr kwelse [else]:expr
730 | {while} kwwhile expr kwdo [block]:expr? label?
731 | {loop} kwloop [block]:expr? label?
732 | {for} kwfor [ids]:id* expr kwdo [block]:expr? label?
733 | {assert} kwassert id? expr [else]:expr?
736 | {binop} expr [expr2]:expr
737 | {or} expr [expr2]:expr
738 | {and} expr [expr2]:expr
739 | {or_else} expr [expr2]:expr
741 | {eq} expr [expr2]:expr
742 | {ee} expr [expr2]:expr
743 | {ne} expr [expr2]:expr
744 | {lt} expr [expr2]:expr
745 | {le} expr [expr2]:expr
746 | {ll} expr [expr2]:expr
747 | {gt} expr [expr2]:expr
748 | {ge} expr [expr2]:expr
749 | {gg} expr [expr2]:expr
751 | {plus} expr [expr2]:expr
752 | {minus} expr [expr2]:expr
753 | {starship} expr [expr2]:expr
754 | {star} expr [expr2]:expr
755 | {slash} expr [expr2]:expr
756 | {percent} expr [expr2]:expr
757 | {uminus} minus expr
758 | {new} kwnew type id? [args]:exprs
759 | {attr} expr [id]:attrid
760 | {attr_assign} expr [id]:attrid assign [value]:expr
761 | {attr_reassign} expr [id]:attrid assign_op [value]:expr
762 | {call} expr id [args]:exprs [closure_defs]:closure_def*
763 | {call_assign} expr id [args]:exprs assign [value]:expr
764 | {call_reassign} expr id [args]:exprs assign_op [value]:expr
765 | {super} qualified? kwsuper [args]:exprs
766 | {init} expr kwinit [args]:exprs
767 | {bra} expr [args]:exprs [closure_defs]:closure_def*
768 | {bra_assign} expr [args]:exprs assign [value]:expr
769 | {bra_reassign} expr [args]:exprs assign_op [value]:expr
770 | {closure_call} id [args]:exprs [closure_defs]:closure_def*
772 | {var_assign} id assign [value]:expr
773 | {var_reassign} id assign_op [value]:expr
774 | {range} expr [expr2]:expr
775 | {crange} obra expr [expr2]:expr cbra
776 | {orange} obra expr [expr2]:expr [cbra]:obra
777 | {array} [exprs]:exprs
787 | {start_string} [string]:start_string
788 | {mid_string} [string]:mid_string
789 | {end_string} [string]:end_string
790 | {superstring} [exprs]:expr*
791 | {par} opar expr cpar
792 | {as_cast} expr kwas opar type cpar
793 | {as_notnull} expr kwas opar kwnot kwnull cpar
794 | {isset_attr} kwisset expr [id]:attrid
795 | {debug_type} kwdebug kwtype expr type
798 = {list} [exprs]:expr*
799 | {par} opar [exprs]:expr* cpar
800 | {bra} obra [exprs]:expr* cbra
808 = bang [id]:closure_id [ids]:id* kwdo? expr? label?
815 module_name = quad? [path]:id* id;
816 extern_calls = kwimport [extern_calls]:extern_call*
820 | {local_prop} methid
821 | {full_prop} classid quad? methid
822 | {init_prop} classid
823 | {cast_as} [from_type]:type kwas [to_type]:type
824 | {as_nullable} type kwas kwnullable
825 | {as_not_nullable} type kwas kwnot kwnullable
827 in_language = kwin string;
828 extern_code_block = in_language? extern_code_segment;
830 qualified = id* classid? ;
834 /*****************************************************************************/